1 //===-- Clang.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "Clang.h"
10 #include "AMDGPU.h"
11 #include "Arch/AArch64.h"
12 #include "Arch/ARM.h"
13 #include "Arch/CSKY.h"
14 #include "Arch/LoongArch.h"
15 #include "Arch/M68k.h"
16 #include "Arch/Mips.h"
17 #include "Arch/PPC.h"
18 #include "Arch/RISCV.h"
19 #include "Arch/Sparc.h"
20 #include "Arch/SystemZ.h"
21 #include "Arch/VE.h"
22 #include "Arch/X86.h"
23 #include "CommonArgs.h"
24 #include "Hexagon.h"
25 #include "MSP430.h"
26 #include "PS4CPU.h"
27 #include "clang/Basic/CLWarnings.h"
28 #include "clang/Basic/CharInfo.h"
29 #include "clang/Basic/CodeGenOptions.h"
30 #include "clang/Basic/HeaderInclude.h"
31 #include "clang/Basic/LangOptions.h"
32 #include "clang/Basic/MakeSupport.h"
33 #include "clang/Basic/ObjCRuntime.h"
34 #include "clang/Basic/Version.h"
35 #include "clang/Config/config.h"
36 #include "clang/Driver/Action.h"
37 #include "clang/Driver/Distro.h"
38 #include "clang/Driver/DriverDiagnostic.h"
39 #include "clang/Driver/InputInfo.h"
40 #include "clang/Driver/Options.h"
41 #include "clang/Driver/SanitizerArgs.h"
42 #include "clang/Driver/Types.h"
43 #include "clang/Driver/XRayArgs.h"
44 #include "llvm/ADT/SmallSet.h"
45 #include "llvm/ADT/StringExtras.h"
46 #include "llvm/BinaryFormat/Magic.h"
47 #include "llvm/Config/llvm-config.h"
48 #include "llvm/Object/ObjectFile.h"
49 #include "llvm/Option/ArgList.h"
50 #include "llvm/Support/CodeGen.h"
51 #include "llvm/Support/Compiler.h"
52 #include "llvm/Support/Compression.h"
53 #include "llvm/Support/Error.h"
54 #include "llvm/Support/FileSystem.h"
55 #include "llvm/Support/Path.h"
56 #include "llvm/Support/Process.h"
57 #include "llvm/Support/RISCVISAInfo.h"
58 #include "llvm/Support/YAMLParser.h"
59 #include "llvm/TargetParser/ARMTargetParserCommon.h"
60 #include "llvm/TargetParser/Host.h"
61 #include "llvm/TargetParser/LoongArchTargetParser.h"
62 #include "llvm/TargetParser/RISCVTargetParser.h"
63 #include <cctype>
64
65 using namespace clang::driver;
66 using namespace clang::driver::tools;
67 using namespace clang;
68 using namespace llvm::opt;
69
CheckPreprocessingOptions(const Driver & D,const ArgList & Args)70 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
71 if (Arg *A = Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC,
72 options::OPT_fminimize_whitespace,
73 options::OPT_fno_minimize_whitespace,
74 options::OPT_fkeep_system_includes,
75 options::OPT_fno_keep_system_includes)) {
76 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
77 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
78 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
79 << A->getBaseArg().getAsString(Args)
80 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
81 }
82 }
83 }
84
CheckCodeGenerationOptions(const Driver & D,const ArgList & Args)85 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
86 // In gcc, only ARM checks this, but it seems reasonable to check universally.
87 if (Args.hasArg(options::OPT_static))
88 if (const Arg *A =
89 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
90 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
91 << "-static";
92 }
93
94 // Add backslashes to escape spaces and other backslashes.
95 // This is used for the space-separated argument list specified with
96 // the -dwarf-debug-flags option.
EscapeSpacesAndBackslashes(const char * Arg,SmallVectorImpl<char> & Res)97 static void EscapeSpacesAndBackslashes(const char *Arg,
98 SmallVectorImpl<char> &Res) {
99 for (; *Arg; ++Arg) {
100 switch (*Arg) {
101 default:
102 break;
103 case ' ':
104 case '\\':
105 Res.push_back('\\');
106 break;
107 }
108 Res.push_back(*Arg);
109 }
110 }
111
112 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
113 /// offloading tool chain that is associated with the current action \a JA.
114 static void
forAllAssociatedToolChains(Compilation & C,const JobAction & JA,const ToolChain & RegularToolChain,llvm::function_ref<void (const ToolChain &)> Work)115 forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
116 const ToolChain &RegularToolChain,
117 llvm::function_ref<void(const ToolChain &)> Work) {
118 // Apply Work on the current/regular tool chain.
119 Work(RegularToolChain);
120
121 // Apply Work on all the offloading tool chains associated with the current
122 // action.
123 if (JA.isHostOffloading(Action::OFK_Cuda))
124 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
125 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
126 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
127 else if (JA.isHostOffloading(Action::OFK_HIP))
128 Work(*C.getSingleOffloadToolChain<Action::OFK_HIP>());
129 else if (JA.isDeviceOffloading(Action::OFK_HIP))
130 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
131
132 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
133 auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
134 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
135 Work(*II->second);
136 } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
137 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
138
139 //
140 // TODO: Add support for other offloading programming models here.
141 //
142 }
143
144 /// This is a helper function for validating the optional refinement step
145 /// parameter in reciprocal argument strings. Return false if there is an error
146 /// parsing the refinement step. Otherwise, return true and set the Position
147 /// of the refinement step in the input string.
getRefinementStep(StringRef In,const Driver & D,const Arg & A,size_t & Position)148 static bool getRefinementStep(StringRef In, const Driver &D,
149 const Arg &A, size_t &Position) {
150 const char RefinementStepToken = ':';
151 Position = In.find(RefinementStepToken);
152 if (Position != StringRef::npos) {
153 StringRef Option = A.getOption().getName();
154 StringRef RefStep = In.substr(Position + 1);
155 // Allow exactly one numeric character for the additional refinement
156 // step parameter. This is reasonable for all currently-supported
157 // operations and architectures because we would expect that a larger value
158 // of refinement steps would cause the estimate "optimization" to
159 // under-perform the native operation. Also, if the estimate does not
160 // converge quickly, it probably will not ever converge, so further
161 // refinement steps will not produce a better answer.
162 if (RefStep.size() != 1) {
163 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
164 return false;
165 }
166 char RefStepChar = RefStep[0];
167 if (RefStepChar < '0' || RefStepChar > '9') {
168 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
169 return false;
170 }
171 }
172 return true;
173 }
174
175 /// The -mrecip flag requires processing of many optional parameters.
ParseMRecip(const Driver & D,const ArgList & Args,ArgStringList & OutStrings)176 static void ParseMRecip(const Driver &D, const ArgList &Args,
177 ArgStringList &OutStrings) {
178 StringRef DisabledPrefixIn = "!";
179 StringRef DisabledPrefixOut = "!";
180 StringRef EnabledPrefixOut = "";
181 StringRef Out = "-mrecip=";
182
183 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
184 if (!A)
185 return;
186
187 unsigned NumOptions = A->getNumValues();
188 if (NumOptions == 0) {
189 // No option is the same as "all".
190 OutStrings.push_back(Args.MakeArgString(Out + "all"));
191 return;
192 }
193
194 // Pass through "all", "none", or "default" with an optional refinement step.
195 if (NumOptions == 1) {
196 StringRef Val = A->getValue(0);
197 size_t RefStepLoc;
198 if (!getRefinementStep(Val, D, *A, RefStepLoc))
199 return;
200 StringRef ValBase = Val.slice(0, RefStepLoc);
201 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
202 OutStrings.push_back(Args.MakeArgString(Out + Val));
203 return;
204 }
205 }
206
207 // Each reciprocal type may be enabled or disabled individually.
208 // Check each input value for validity, concatenate them all back together,
209 // and pass through.
210
211 llvm::StringMap<bool> OptionStrings;
212 OptionStrings.insert(std::make_pair("divd", false));
213 OptionStrings.insert(std::make_pair("divf", false));
214 OptionStrings.insert(std::make_pair("divh", false));
215 OptionStrings.insert(std::make_pair("vec-divd", false));
216 OptionStrings.insert(std::make_pair("vec-divf", false));
217 OptionStrings.insert(std::make_pair("vec-divh", false));
218 OptionStrings.insert(std::make_pair("sqrtd", false));
219 OptionStrings.insert(std::make_pair("sqrtf", false));
220 OptionStrings.insert(std::make_pair("sqrth", false));
221 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
222 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
223 OptionStrings.insert(std::make_pair("vec-sqrth", false));
224
225 for (unsigned i = 0; i != NumOptions; ++i) {
226 StringRef Val = A->getValue(i);
227
228 bool IsDisabled = Val.starts_with(DisabledPrefixIn);
229 // Ignore the disablement token for string matching.
230 if (IsDisabled)
231 Val = Val.substr(1);
232
233 size_t RefStep;
234 if (!getRefinementStep(Val, D, *A, RefStep))
235 return;
236
237 StringRef ValBase = Val.slice(0, RefStep);
238 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
239 if (OptionIter == OptionStrings.end()) {
240 // Try again specifying float suffix.
241 OptionIter = OptionStrings.find(ValBase.str() + 'f');
242 if (OptionIter == OptionStrings.end()) {
243 // The input name did not match any known option string.
244 D.Diag(diag::err_drv_unknown_argument) << Val;
245 return;
246 }
247 // The option was specified without a half or float or double suffix.
248 // Make sure that the double or half entry was not already specified.
249 // The float entry will be checked below.
250 if (OptionStrings[ValBase.str() + 'd'] ||
251 OptionStrings[ValBase.str() + 'h']) {
252 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
253 return;
254 }
255 }
256
257 if (OptionIter->second == true) {
258 // Duplicate option specified.
259 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
260 return;
261 }
262
263 // Mark the matched option as found. Do not allow duplicate specifiers.
264 OptionIter->second = true;
265
266 // If the precision was not specified, also mark the double and half entry
267 // as found.
268 if (ValBase.back() != 'f' && ValBase.back() != 'd' && ValBase.back() != 'h') {
269 OptionStrings[ValBase.str() + 'd'] = true;
270 OptionStrings[ValBase.str() + 'h'] = true;
271 }
272
273 // Build the output string.
274 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
275 Out = Args.MakeArgString(Out + Prefix + Val);
276 if (i != NumOptions - 1)
277 Out = Args.MakeArgString(Out + ",");
278 }
279
280 OutStrings.push_back(Args.MakeArgString(Out));
281 }
282
283 /// The -mprefer-vector-width option accepts either a positive integer
284 /// or the string "none".
ParseMPreferVectorWidth(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)285 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
286 ArgStringList &CmdArgs) {
287 Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
288 if (!A)
289 return;
290
291 StringRef Value = A->getValue();
292 if (Value == "none") {
293 CmdArgs.push_back("-mprefer-vector-width=none");
294 } else {
295 unsigned Width;
296 if (Value.getAsInteger(10, Width)) {
297 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
298 return;
299 }
300 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
301 }
302 }
303
304 static bool
shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime & runtime,const llvm::Triple & Triple)305 shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
306 const llvm::Triple &Triple) {
307 // We use the zero-cost exception tables for Objective-C if the non-fragile
308 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
309 // later.
310 if (runtime.isNonFragile())
311 return true;
312
313 if (!Triple.isMacOSX())
314 return false;
315
316 return (!Triple.isMacOSXVersionLT(10, 5) &&
317 (Triple.getArch() == llvm::Triple::x86_64 ||
318 Triple.getArch() == llvm::Triple::arm));
319 }
320
321 /// Adds exception related arguments to the driver command arguments. There's a
322 /// main flag, -fexceptions and also language specific flags to enable/disable
323 /// C++ and Objective-C exceptions. This makes it possible to for example
324 /// disable C++ exceptions but enable Objective-C exceptions.
addExceptionArgs(const ArgList & Args,types::ID InputType,const ToolChain & TC,bool KernelOrKext,const ObjCRuntime & objcRuntime,ArgStringList & CmdArgs)325 static bool addExceptionArgs(const ArgList &Args, types::ID InputType,
326 const ToolChain &TC, bool KernelOrKext,
327 const ObjCRuntime &objcRuntime,
328 ArgStringList &CmdArgs) {
329 const llvm::Triple &Triple = TC.getTriple();
330
331 if (KernelOrKext) {
332 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
333 // arguments now to avoid warnings about unused arguments.
334 Args.ClaimAllArgs(options::OPT_fexceptions);
335 Args.ClaimAllArgs(options::OPT_fno_exceptions);
336 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
337 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
338 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
339 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
340 Args.ClaimAllArgs(options::OPT_fasync_exceptions);
341 Args.ClaimAllArgs(options::OPT_fno_async_exceptions);
342 return false;
343 }
344
345 // See if the user explicitly enabled exceptions.
346 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
347 false);
348
349 bool EHa = Args.hasFlag(options::OPT_fasync_exceptions,
350 options::OPT_fno_async_exceptions, false);
351 if (EHa) {
352 CmdArgs.push_back("-fasync-exceptions");
353 EH = true;
354 }
355
356 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
357 // is not necessarily sensible, but follows GCC.
358 if (types::isObjC(InputType) &&
359 Args.hasFlag(options::OPT_fobjc_exceptions,
360 options::OPT_fno_objc_exceptions, true)) {
361 CmdArgs.push_back("-fobjc-exceptions");
362
363 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
364 }
365
366 if (types::isCXX(InputType)) {
367 // Disable C++ EH by default on XCore and PS4/PS5.
368 bool CXXExceptionsEnabled = Triple.getArch() != llvm::Triple::xcore &&
369 !Triple.isPS() && !Triple.isDriverKit();
370 Arg *ExceptionArg = Args.getLastArg(
371 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
372 options::OPT_fexceptions, options::OPT_fno_exceptions);
373 if (ExceptionArg)
374 CXXExceptionsEnabled =
375 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
376 ExceptionArg->getOption().matches(options::OPT_fexceptions);
377
378 if (CXXExceptionsEnabled) {
379 CmdArgs.push_back("-fcxx-exceptions");
380
381 EH = true;
382 }
383 }
384
385 // OPT_fignore_exceptions means exception could still be thrown,
386 // but no clean up or catch would happen in current module.
387 // So we do not set EH to false.
388 Args.AddLastArg(CmdArgs, options::OPT_fignore_exceptions);
389
390 Args.addOptInFlag(CmdArgs, options::OPT_fassume_nothrow_exception_dtor,
391 options::OPT_fno_assume_nothrow_exception_dtor);
392
393 if (EH)
394 CmdArgs.push_back("-fexceptions");
395 return EH;
396 }
397
ShouldEnableAutolink(const ArgList & Args,const ToolChain & TC,const JobAction & JA)398 static bool ShouldEnableAutolink(const ArgList &Args, const ToolChain &TC,
399 const JobAction &JA) {
400 bool Default = true;
401 if (TC.getTriple().isOSDarwin()) {
402 // The native darwin assembler doesn't support the linker_option directives,
403 // so we disable them if we think the .s file will be passed to it.
404 Default = TC.useIntegratedAs();
405 }
406 // The linker_option directives are intended for host compilation.
407 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
408 JA.isDeviceOffloading(Action::OFK_HIP))
409 Default = false;
410 return Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
411 Default);
412 }
413
414 /// Add a CC1 option to specify the debug compilation directory.
addDebugCompDirArg(const ArgList & Args,ArgStringList & CmdArgs,const llvm::vfs::FileSystem & VFS)415 static const char *addDebugCompDirArg(const ArgList &Args,
416 ArgStringList &CmdArgs,
417 const llvm::vfs::FileSystem &VFS) {
418 if (Arg *A = Args.getLastArg(options::OPT_ffile_compilation_dir_EQ,
419 options::OPT_fdebug_compilation_dir_EQ)) {
420 if (A->getOption().matches(options::OPT_ffile_compilation_dir_EQ))
421 CmdArgs.push_back(Args.MakeArgString(Twine("-fdebug-compilation-dir=") +
422 A->getValue()));
423 else
424 A->render(Args, CmdArgs);
425 } else if (llvm::ErrorOr<std::string> CWD =
426 VFS.getCurrentWorkingDirectory()) {
427 CmdArgs.push_back(Args.MakeArgString("-fdebug-compilation-dir=" + *CWD));
428 }
429 StringRef Path(CmdArgs.back());
430 return Path.substr(Path.find('=') + 1).data();
431 }
432
addDebugObjectName(const ArgList & Args,ArgStringList & CmdArgs,const char * DebugCompilationDir,const char * OutputFileName)433 static void addDebugObjectName(const ArgList &Args, ArgStringList &CmdArgs,
434 const char *DebugCompilationDir,
435 const char *OutputFileName) {
436 // No need to generate a value for -object-file-name if it was provided.
437 for (auto *Arg : Args.filtered(options::OPT_Xclang))
438 if (StringRef(Arg->getValue()).starts_with("-object-file-name"))
439 return;
440
441 if (Args.hasArg(options::OPT_object_file_name_EQ))
442 return;
443
444 SmallString<128> ObjFileNameForDebug(OutputFileName);
445 if (ObjFileNameForDebug != "-" &&
446 !llvm::sys::path::is_absolute(ObjFileNameForDebug) &&
447 (!DebugCompilationDir ||
448 llvm::sys::path::is_absolute(DebugCompilationDir))) {
449 // Make the path absolute in the debug infos like MSVC does.
450 llvm::sys::fs::make_absolute(ObjFileNameForDebug);
451 }
452 // If the object file name is a relative path, then always use Windows
453 // backslash style as -object-file-name is used for embedding object file path
454 // in codeview and it can only be generated when targeting on Windows.
455 // Otherwise, just use native absolute path.
456 llvm::sys::path::Style Style =
457 llvm::sys::path::is_absolute(ObjFileNameForDebug)
458 ? llvm::sys::path::Style::native
459 : llvm::sys::path::Style::windows_backslash;
460 llvm::sys::path::remove_dots(ObjFileNameForDebug, /*remove_dot_dot=*/true,
461 Style);
462 CmdArgs.push_back(
463 Args.MakeArgString(Twine("-object-file-name=") + ObjFileNameForDebug));
464 }
465
466 /// Add a CC1 and CC1AS option to specify the debug file path prefix map.
addDebugPrefixMapArg(const Driver & D,const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)467 static void addDebugPrefixMapArg(const Driver &D, const ToolChain &TC,
468 const ArgList &Args, ArgStringList &CmdArgs) {
469 auto AddOneArg = [&](StringRef Map, StringRef Name) {
470 if (!Map.contains('='))
471 D.Diag(diag::err_drv_invalid_argument_to_option) << Map << Name;
472 else
473 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
474 };
475
476 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
477 options::OPT_fdebug_prefix_map_EQ)) {
478 AddOneArg(A->getValue(), A->getOption().getName());
479 A->claim();
480 }
481 std::string GlobalRemapEntry = TC.GetGlobalDebugPathRemapping();
482 if (GlobalRemapEntry.empty())
483 return;
484 AddOneArg(GlobalRemapEntry, "environment");
485 }
486
487 /// Add a CC1 and CC1AS option to specify the macro file path prefix map.
addMacroPrefixMapArg(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)488 static void addMacroPrefixMapArg(const Driver &D, const ArgList &Args,
489 ArgStringList &CmdArgs) {
490 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
491 options::OPT_fmacro_prefix_map_EQ)) {
492 StringRef Map = A->getValue();
493 if (!Map.contains('='))
494 D.Diag(diag::err_drv_invalid_argument_to_option)
495 << Map << A->getOption().getName();
496 else
497 CmdArgs.push_back(Args.MakeArgString("-fmacro-prefix-map=" + Map));
498 A->claim();
499 }
500 }
501
502 /// Add a CC1 and CC1AS option to specify the coverage file path prefix map.
addCoveragePrefixMapArg(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)503 static void addCoveragePrefixMapArg(const Driver &D, const ArgList &Args,
504 ArgStringList &CmdArgs) {
505 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
506 options::OPT_fcoverage_prefix_map_EQ)) {
507 StringRef Map = A->getValue();
508 if (!Map.contains('='))
509 D.Diag(diag::err_drv_invalid_argument_to_option)
510 << Map << A->getOption().getName();
511 else
512 CmdArgs.push_back(Args.MakeArgString("-fcoverage-prefix-map=" + Map));
513 A->claim();
514 }
515 }
516
517 /// Vectorize at all optimization levels greater than 1 except for -Oz.
518 /// For -Oz the loop vectorizer is disabled, while the slp vectorizer is
519 /// enabled.
shouldEnableVectorizerAtOLevel(const ArgList & Args,bool isSlpVec)520 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
521 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
522 if (A->getOption().matches(options::OPT_O4) ||
523 A->getOption().matches(options::OPT_Ofast))
524 return true;
525
526 if (A->getOption().matches(options::OPT_O0))
527 return false;
528
529 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
530
531 // Vectorize -Os.
532 StringRef S(A->getValue());
533 if (S == "s")
534 return true;
535
536 // Don't vectorize -Oz, unless it's the slp vectorizer.
537 if (S == "z")
538 return isSlpVec;
539
540 unsigned OptLevel = 0;
541 if (S.getAsInteger(10, OptLevel))
542 return false;
543
544 return OptLevel > 1;
545 }
546
547 return false;
548 }
549
550 /// Add -x lang to \p CmdArgs for \p Input.
addDashXForInput(const ArgList & Args,const InputInfo & Input,ArgStringList & CmdArgs)551 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
552 ArgStringList &CmdArgs) {
553 // When using -verify-pch, we don't want to provide the type
554 // 'precompiled-header' if it was inferred from the file extension
555 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
556 return;
557
558 CmdArgs.push_back("-x");
559 if (Args.hasArg(options::OPT_rewrite_objc))
560 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
561 else {
562 // Map the driver type to the frontend type. This is mostly an identity
563 // mapping, except that the distinction between module interface units
564 // and other source files does not exist at the frontend layer.
565 const char *ClangType;
566 switch (Input.getType()) {
567 case types::TY_CXXModule:
568 ClangType = "c++";
569 break;
570 case types::TY_PP_CXXModule:
571 ClangType = "c++-cpp-output";
572 break;
573 default:
574 ClangType = types::getTypeName(Input.getType());
575 break;
576 }
577 CmdArgs.push_back(ClangType);
578 }
579 }
580
addPGOAndCoverageFlags(const ToolChain & TC,Compilation & C,const JobAction & JA,const InputInfo & Output,const ArgList & Args,SanitizerArgs & SanArgs,ArgStringList & CmdArgs)581 static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C,
582 const JobAction &JA, const InputInfo &Output,
583 const ArgList &Args, SanitizerArgs &SanArgs,
584 ArgStringList &CmdArgs) {
585 const Driver &D = TC.getDriver();
586 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
587 options::OPT_fprofile_generate_EQ,
588 options::OPT_fno_profile_generate);
589 if (PGOGenerateArg &&
590 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
591 PGOGenerateArg = nullptr;
592
593 auto *CSPGOGenerateArg = getLastCSProfileGenerateArg(Args);
594
595 auto *ProfileGenerateArg = Args.getLastArg(
596 options::OPT_fprofile_instr_generate,
597 options::OPT_fprofile_instr_generate_EQ,
598 options::OPT_fno_profile_instr_generate);
599 if (ProfileGenerateArg &&
600 ProfileGenerateArg->getOption().matches(
601 options::OPT_fno_profile_instr_generate))
602 ProfileGenerateArg = nullptr;
603
604 if (PGOGenerateArg && ProfileGenerateArg)
605 D.Diag(diag::err_drv_argument_not_allowed_with)
606 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
607
608 auto *ProfileUseArg = getLastProfileUseArg(Args);
609
610 if (PGOGenerateArg && ProfileUseArg)
611 D.Diag(diag::err_drv_argument_not_allowed_with)
612 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
613
614 if (ProfileGenerateArg && ProfileUseArg)
615 D.Diag(diag::err_drv_argument_not_allowed_with)
616 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
617
618 if (CSPGOGenerateArg && PGOGenerateArg) {
619 D.Diag(diag::err_drv_argument_not_allowed_with)
620 << CSPGOGenerateArg->getSpelling() << PGOGenerateArg->getSpelling();
621 PGOGenerateArg = nullptr;
622 }
623
624 if (TC.getTriple().isOSAIX()) {
625 if (Arg *ProfileSampleUseArg = getLastProfileSampleUseArg(Args))
626 D.Diag(diag::err_drv_unsupported_opt_for_target)
627 << ProfileSampleUseArg->getSpelling() << TC.getTriple().str();
628 }
629
630 if (ProfileGenerateArg) {
631 if (ProfileGenerateArg->getOption().matches(
632 options::OPT_fprofile_instr_generate_EQ))
633 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
634 ProfileGenerateArg->getValue()));
635 // The default is to use Clang Instrumentation.
636 CmdArgs.push_back("-fprofile-instrument=clang");
637 if (TC.getTriple().isWindowsMSVCEnvironment()) {
638 // Add dependent lib for clang_rt.profile
639 CmdArgs.push_back(Args.MakeArgString(
640 "--dependent-lib=" + TC.getCompilerRTBasename(Args, "profile")));
641 }
642 }
643
644 Arg *PGOGenArg = nullptr;
645 if (PGOGenerateArg) {
646 assert(!CSPGOGenerateArg);
647 PGOGenArg = PGOGenerateArg;
648 CmdArgs.push_back("-fprofile-instrument=llvm");
649 }
650 if (CSPGOGenerateArg) {
651 assert(!PGOGenerateArg);
652 PGOGenArg = CSPGOGenerateArg;
653 CmdArgs.push_back("-fprofile-instrument=csllvm");
654 }
655 if (PGOGenArg) {
656 if (TC.getTriple().isWindowsMSVCEnvironment()) {
657 // Add dependent lib for clang_rt.profile
658 CmdArgs.push_back(Args.MakeArgString(
659 "--dependent-lib=" + TC.getCompilerRTBasename(Args, "profile")));
660 }
661 if (PGOGenArg->getOption().matches(
662 PGOGenerateArg ? options::OPT_fprofile_generate_EQ
663 : options::OPT_fcs_profile_generate_EQ)) {
664 SmallString<128> Path(PGOGenArg->getValue());
665 llvm::sys::path::append(Path, "default_%m.profraw");
666 CmdArgs.push_back(
667 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
668 }
669 }
670
671 if (ProfileUseArg) {
672 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
673 CmdArgs.push_back(Args.MakeArgString(
674 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
675 else if ((ProfileUseArg->getOption().matches(
676 options::OPT_fprofile_use_EQ) ||
677 ProfileUseArg->getOption().matches(
678 options::OPT_fprofile_instr_use))) {
679 SmallString<128> Path(
680 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
681 if (Path.empty() || llvm::sys::fs::is_directory(Path))
682 llvm::sys::path::append(Path, "default.profdata");
683 CmdArgs.push_back(
684 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
685 }
686 }
687
688 bool EmitCovNotes = Args.hasFlag(options::OPT_ftest_coverage,
689 options::OPT_fno_test_coverage, false) ||
690 Args.hasArg(options::OPT_coverage);
691 bool EmitCovData = TC.needsGCovInstrumentation(Args);
692
693 if (Args.hasFlag(options::OPT_fcoverage_mapping,
694 options::OPT_fno_coverage_mapping, false)) {
695 if (!ProfileGenerateArg)
696 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
697 << "-fcoverage-mapping"
698 << "-fprofile-instr-generate";
699
700 CmdArgs.push_back("-fcoverage-mapping");
701 }
702
703 if (Args.hasFlag(options::OPT_fmcdc_coverage, options::OPT_fno_mcdc_coverage,
704 false)) {
705 if (!Args.hasFlag(options::OPT_fcoverage_mapping,
706 options::OPT_fno_coverage_mapping, false))
707 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
708 << "-fcoverage-mcdc"
709 << "-fcoverage-mapping";
710
711 CmdArgs.push_back("-fcoverage-mcdc");
712 }
713
714 if (Arg *A = Args.getLastArg(options::OPT_ffile_compilation_dir_EQ,
715 options::OPT_fcoverage_compilation_dir_EQ)) {
716 if (A->getOption().matches(options::OPT_ffile_compilation_dir_EQ))
717 CmdArgs.push_back(Args.MakeArgString(
718 Twine("-fcoverage-compilation-dir=") + A->getValue()));
719 else
720 A->render(Args, CmdArgs);
721 } else if (llvm::ErrorOr<std::string> CWD =
722 D.getVFS().getCurrentWorkingDirectory()) {
723 CmdArgs.push_back(Args.MakeArgString("-fcoverage-compilation-dir=" + *CWD));
724 }
725
726 if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {
727 auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
728 if (!Args.hasArg(options::OPT_coverage))
729 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
730 << "-fprofile-exclude-files="
731 << "--coverage";
732
733 StringRef v = Arg->getValue();
734 CmdArgs.push_back(
735 Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));
736 }
737
738 if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {
739 auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
740 if (!Args.hasArg(options::OPT_coverage))
741 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
742 << "-fprofile-filter-files="
743 << "--coverage";
744
745 StringRef v = Arg->getValue();
746 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));
747 }
748
749 if (const auto *A = Args.getLastArg(options::OPT_fprofile_update_EQ)) {
750 StringRef Val = A->getValue();
751 if (Val == "atomic" || Val == "prefer-atomic")
752 CmdArgs.push_back("-fprofile-update=atomic");
753 else if (Val != "single")
754 D.Diag(diag::err_drv_unsupported_option_argument)
755 << A->getSpelling() << Val;
756 }
757
758 int FunctionGroups = 1;
759 int SelectedFunctionGroup = 0;
760 if (const auto *A = Args.getLastArg(options::OPT_fprofile_function_groups)) {
761 StringRef Val = A->getValue();
762 if (Val.getAsInteger(0, FunctionGroups) || FunctionGroups < 1)
763 D.Diag(diag::err_drv_invalid_int_value) << A->getAsString(Args) << Val;
764 }
765 if (const auto *A =
766 Args.getLastArg(options::OPT_fprofile_selected_function_group)) {
767 StringRef Val = A->getValue();
768 if (Val.getAsInteger(0, SelectedFunctionGroup) ||
769 SelectedFunctionGroup < 0 || SelectedFunctionGroup >= FunctionGroups)
770 D.Diag(diag::err_drv_invalid_int_value) << A->getAsString(Args) << Val;
771 }
772 if (FunctionGroups != 1)
773 CmdArgs.push_back(Args.MakeArgString("-fprofile-function-groups=" +
774 Twine(FunctionGroups)));
775 if (SelectedFunctionGroup != 0)
776 CmdArgs.push_back(Args.MakeArgString("-fprofile-selected-function-group=" +
777 Twine(SelectedFunctionGroup)));
778
779 // Leave -fprofile-dir= an unused argument unless .gcda emission is
780 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
781 // the flag used. There is no -fno-profile-dir, so the user has no
782 // targeted way to suppress the warning.
783 Arg *FProfileDir = nullptr;
784 if (Args.hasArg(options::OPT_fprofile_arcs) ||
785 Args.hasArg(options::OPT_coverage))
786 FProfileDir = Args.getLastArg(options::OPT_fprofile_dir);
787
788 // TODO: Don't claim -c/-S to warn about -fsyntax-only -c/-S, -E -c/-S,
789 // like we warn about -fsyntax-only -E.
790 (void)(Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S));
791
792 // Put the .gcno and .gcda files (if needed) next to the primary output file,
793 // or fall back to a file in the current directory for `clang -c --coverage
794 // d/a.c` in the absence of -o.
795 if (EmitCovNotes || EmitCovData) {
796 SmallString<128> CoverageFilename;
797 if (Arg *DumpDir = Args.getLastArgNoClaim(options::OPT_dumpdir)) {
798 // Form ${dumpdir}${basename}.gcno. Note that dumpdir may not end with a
799 // path separator.
800 CoverageFilename = DumpDir->getValue();
801 CoverageFilename += llvm::sys::path::filename(Output.getBaseInput());
802 } else if (Arg *FinalOutput =
803 C.getArgs().getLastArg(options::OPT__SLASH_Fo)) {
804 CoverageFilename = FinalOutput->getValue();
805 } else if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o)) {
806 CoverageFilename = FinalOutput->getValue();
807 } else {
808 CoverageFilename = llvm::sys::path::filename(Output.getBaseInput());
809 }
810 if (llvm::sys::path::is_relative(CoverageFilename))
811 (void)D.getVFS().makeAbsolute(CoverageFilename);
812 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
813 if (EmitCovNotes) {
814 CmdArgs.push_back(
815 Args.MakeArgString("-coverage-notes-file=" + CoverageFilename));
816 }
817
818 if (EmitCovData) {
819 if (FProfileDir) {
820 SmallString<128> Gcno = std::move(CoverageFilename);
821 CoverageFilename = FProfileDir->getValue();
822 llvm::sys::path::append(CoverageFilename, Gcno);
823 }
824 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
825 CmdArgs.push_back(
826 Args.MakeArgString("-coverage-data-file=" + CoverageFilename));
827 }
828 }
829 }
830
831 /// Check whether the given input tree contains any compilation actions.
ContainsCompileAction(const Action * A)832 static bool ContainsCompileAction(const Action *A) {
833 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
834 return true;
835
836 return llvm::any_of(A->inputs(), ContainsCompileAction);
837 }
838
839 /// Check if -relax-all should be passed to the internal assembler.
840 /// This is done by default when compiling non-assembler source with -O0.
UseRelaxAll(Compilation & C,const ArgList & Args)841 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
842 bool RelaxDefault = true;
843
844 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
845 RelaxDefault = A->getOption().matches(options::OPT_O0);
846
847 if (RelaxDefault) {
848 RelaxDefault = false;
849 for (const auto &Act : C.getActions()) {
850 if (ContainsCompileAction(Act)) {
851 RelaxDefault = true;
852 break;
853 }
854 }
855 }
856
857 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
858 RelaxDefault);
859 }
860
861 static void
RenderDebugEnablingArgs(const ArgList & Args,ArgStringList & CmdArgs,llvm::codegenoptions::DebugInfoKind DebugInfoKind,unsigned DwarfVersion,llvm::DebuggerKind DebuggerTuning)862 RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
863 llvm::codegenoptions::DebugInfoKind DebugInfoKind,
864 unsigned DwarfVersion,
865 llvm::DebuggerKind DebuggerTuning) {
866 addDebugInfoKind(CmdArgs, DebugInfoKind);
867 if (DwarfVersion > 0)
868 CmdArgs.push_back(
869 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
870 switch (DebuggerTuning) {
871 case llvm::DebuggerKind::GDB:
872 CmdArgs.push_back("-debugger-tuning=gdb");
873 break;
874 case llvm::DebuggerKind::LLDB:
875 CmdArgs.push_back("-debugger-tuning=lldb");
876 break;
877 case llvm::DebuggerKind::SCE:
878 CmdArgs.push_back("-debugger-tuning=sce");
879 break;
880 case llvm::DebuggerKind::DBX:
881 CmdArgs.push_back("-debugger-tuning=dbx");
882 break;
883 default:
884 break;
885 }
886 }
887
checkDebugInfoOption(const Arg * A,const ArgList & Args,const Driver & D,const ToolChain & TC)888 static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
889 const Driver &D, const ToolChain &TC) {
890 assert(A && "Expected non-nullptr argument.");
891 if (TC.supportsDebugInfoOption(A))
892 return true;
893 D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
894 << A->getAsString(Args) << TC.getTripleString();
895 return false;
896 }
897
RenderDebugInfoCompressionArgs(const ArgList & Args,ArgStringList & CmdArgs,const Driver & D,const ToolChain & TC)898 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
899 ArgStringList &CmdArgs,
900 const Driver &D,
901 const ToolChain &TC) {
902 const Arg *A = Args.getLastArg(options::OPT_gz_EQ);
903 if (!A)
904 return;
905 if (checkDebugInfoOption(A, Args, D, TC)) {
906 StringRef Value = A->getValue();
907 if (Value == "none") {
908 CmdArgs.push_back("--compress-debug-sections=none");
909 } else if (Value == "zlib") {
910 if (llvm::compression::zlib::isAvailable()) {
911 CmdArgs.push_back(
912 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
913 } else {
914 D.Diag(diag::warn_debug_compression_unavailable) << "zlib";
915 }
916 } else if (Value == "zstd") {
917 if (llvm::compression::zstd::isAvailable()) {
918 CmdArgs.push_back(
919 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
920 } else {
921 D.Diag(diag::warn_debug_compression_unavailable) << "zstd";
922 }
923 } else {
924 D.Diag(diag::err_drv_unsupported_option_argument)
925 << A->getSpelling() << Value;
926 }
927 }
928 }
929
handleAMDGPUCodeObjectVersionOptions(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs,bool IsCC1As=false)930 static void handleAMDGPUCodeObjectVersionOptions(const Driver &D,
931 const ArgList &Args,
932 ArgStringList &CmdArgs,
933 bool IsCC1As = false) {
934 // If no version was requested by the user, use the default value from the
935 // back end. This is consistent with the value returned from
936 // getAMDGPUCodeObjectVersion. This lets clang emit IR for amdgpu without
937 // requiring the corresponding llvm to have the AMDGPU target enabled,
938 // provided the user (e.g. front end tests) can use the default.
939 if (haveAMDGPUCodeObjectVersionArgument(D, Args)) {
940 unsigned CodeObjVer = getAMDGPUCodeObjectVersion(D, Args);
941 CmdArgs.insert(CmdArgs.begin() + 1,
942 Args.MakeArgString(Twine("--amdhsa-code-object-version=") +
943 Twine(CodeObjVer)));
944 CmdArgs.insert(CmdArgs.begin() + 1, "-mllvm");
945 // -cc1as does not accept -mcode-object-version option.
946 if (!IsCC1As)
947 CmdArgs.insert(CmdArgs.begin() + 1,
948 Args.MakeArgString(Twine("-mcode-object-version=") +
949 Twine(CodeObjVer)));
950 }
951 }
952
maybeHasClangPchSignature(const Driver & D,StringRef Path)953 static bool maybeHasClangPchSignature(const Driver &D, StringRef Path) {
954 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> MemBuf =
955 D.getVFS().getBufferForFile(Path);
956 if (!MemBuf)
957 return false;
958 llvm::file_magic Magic = llvm::identify_magic((*MemBuf)->getBuffer());
959 if (Magic == llvm::file_magic::unknown)
960 return false;
961 // Return true for both raw Clang AST files and object files which may
962 // contain a __clangast section.
963 if (Magic == llvm::file_magic::clang_ast)
964 return true;
965 Expected<std::unique_ptr<llvm::object::ObjectFile>> Obj =
966 llvm::object::ObjectFile::createObjectFile(**MemBuf, Magic);
967 return !Obj.takeError();
968 }
969
gchProbe(const Driver & D,StringRef Path)970 static bool gchProbe(const Driver &D, StringRef Path) {
971 llvm::ErrorOr<llvm::vfs::Status> Status = D.getVFS().status(Path);
972 if (!Status)
973 return false;
974
975 if (Status->isDirectory()) {
976 std::error_code EC;
977 for (llvm::vfs::directory_iterator DI = D.getVFS().dir_begin(Path, EC), DE;
978 !EC && DI != DE; DI = DI.increment(EC)) {
979 if (maybeHasClangPchSignature(D, DI->path()))
980 return true;
981 }
982 D.Diag(diag::warn_drv_pch_ignoring_gch_dir) << Path;
983 return false;
984 }
985
986 if (maybeHasClangPchSignature(D, Path))
987 return true;
988 D.Diag(diag::warn_drv_pch_ignoring_gch_file) << Path;
989 return false;
990 }
991
AddPreprocessingOptions(Compilation & C,const JobAction & JA,const Driver & D,const ArgList & Args,ArgStringList & CmdArgs,const InputInfo & Output,const InputInfoList & Inputs) const992 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
993 const Driver &D, const ArgList &Args,
994 ArgStringList &CmdArgs,
995 const InputInfo &Output,
996 const InputInfoList &Inputs) const {
997 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
998
999 CheckPreprocessingOptions(D, Args);
1000
1001 Args.AddLastArg(CmdArgs, options::OPT_C);
1002 Args.AddLastArg(CmdArgs, options::OPT_CC);
1003
1004 // Handle dependency file generation.
1005 Arg *ArgM = Args.getLastArg(options::OPT_MM);
1006 if (!ArgM)
1007 ArgM = Args.getLastArg(options::OPT_M);
1008 Arg *ArgMD = Args.getLastArg(options::OPT_MMD);
1009 if (!ArgMD)
1010 ArgMD = Args.getLastArg(options::OPT_MD);
1011
1012 // -M and -MM imply -w.
1013 if (ArgM)
1014 CmdArgs.push_back("-w");
1015 else
1016 ArgM = ArgMD;
1017
1018 if (ArgM) {
1019 // Determine the output location.
1020 const char *DepFile;
1021 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1022 DepFile = MF->getValue();
1023 C.addFailureResultFile(DepFile, &JA);
1024 } else if (Output.getType() == types::TY_Dependencies) {
1025 DepFile = Output.getFilename();
1026 } else if (!ArgMD) {
1027 DepFile = "-";
1028 } else {
1029 DepFile = getDependencyFileName(Args, Inputs);
1030 C.addFailureResultFile(DepFile, &JA);
1031 }
1032 CmdArgs.push_back("-dependency-file");
1033 CmdArgs.push_back(DepFile);
1034
1035 bool HasTarget = false;
1036 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1037 HasTarget = true;
1038 A->claim();
1039 if (A->getOption().matches(options::OPT_MT)) {
1040 A->render(Args, CmdArgs);
1041 } else {
1042 CmdArgs.push_back("-MT");
1043 SmallString<128> Quoted;
1044 quoteMakeTarget(A->getValue(), Quoted);
1045 CmdArgs.push_back(Args.MakeArgString(Quoted));
1046 }
1047 }
1048
1049 // Add a default target if one wasn't specified.
1050 if (!HasTarget) {
1051 const char *DepTarget;
1052
1053 // If user provided -o, that is the dependency target, except
1054 // when we are only generating a dependency file.
1055 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1056 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1057 DepTarget = OutputOpt->getValue();
1058 } else {
1059 // Otherwise derive from the base input.
1060 //
1061 // FIXME: This should use the computed output file location.
1062 SmallString<128> P(Inputs[0].getBaseInput());
1063 llvm::sys::path::replace_extension(P, "o");
1064 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1065 }
1066
1067 CmdArgs.push_back("-MT");
1068 SmallString<128> Quoted;
1069 quoteMakeTarget(DepTarget, Quoted);
1070 CmdArgs.push_back(Args.MakeArgString(Quoted));
1071 }
1072
1073 if (ArgM->getOption().matches(options::OPT_M) ||
1074 ArgM->getOption().matches(options::OPT_MD))
1075 CmdArgs.push_back("-sys-header-deps");
1076 if ((isa<PrecompileJobAction>(JA) &&
1077 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1078 Args.hasArg(options::OPT_fmodule_file_deps))
1079 CmdArgs.push_back("-module-file-deps");
1080 }
1081
1082 if (Args.hasArg(options::OPT_MG)) {
1083 if (!ArgM || ArgM->getOption().matches(options::OPT_MD) ||
1084 ArgM->getOption().matches(options::OPT_MMD))
1085 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1086 CmdArgs.push_back("-MG");
1087 }
1088
1089 Args.AddLastArg(CmdArgs, options::OPT_MP);
1090 Args.AddLastArg(CmdArgs, options::OPT_MV);
1091
1092 // Add offload include arguments specific for CUDA/HIP. This must happen
1093 // before we -I or -include anything else, because we must pick up the
1094 // CUDA/HIP headers from the particular CUDA/ROCm installation, rather than
1095 // from e.g. /usr/local/include.
1096 if (JA.isOffloading(Action::OFK_Cuda))
1097 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1098 if (JA.isOffloading(Action::OFK_HIP))
1099 getToolChain().AddHIPIncludeArgs(Args, CmdArgs);
1100
1101 // If we are compiling for a GPU target we want to override the system headers
1102 // with ones created by the 'libc' project if present.
1103 if (!Args.hasArg(options::OPT_nostdinc) &&
1104 !Args.hasArg(options::OPT_nogpuinc) &&
1105 !Args.hasArg(options::OPT_nobuiltininc)) {
1106 // Without an offloading language we will include these headers directly.
1107 // Offloading languages will instead only use the declarations stored in
1108 // the resource directory at clang/lib/Headers/llvm_libc_wrappers.
1109 if ((getToolChain().getTriple().isNVPTX() ||
1110 getToolChain().getTriple().isAMDGCN()) &&
1111 C.getActiveOffloadKinds() == Action::OFK_None) {
1112 SmallString<128> P(llvm::sys::path::parent_path(D.InstalledDir));
1113 llvm::sys::path::append(P, "include");
1114 llvm::sys::path::append(P, "gpu-none-llvm");
1115 CmdArgs.push_back("-c-isystem");
1116 CmdArgs.push_back(Args.MakeArgString(P));
1117 } else if (C.getActiveOffloadKinds() == Action::OFK_OpenMP) {
1118 // TODO: CUDA / HIP include their own headers for some common functions
1119 // implemented here. We'll need to clean those up so they do not conflict.
1120 SmallString<128> P(D.ResourceDir);
1121 llvm::sys::path::append(P, "include");
1122 llvm::sys::path::append(P, "llvm_libc_wrappers");
1123 CmdArgs.push_back("-internal-isystem");
1124 CmdArgs.push_back(Args.MakeArgString(P));
1125 }
1126 }
1127
1128 // If we are offloading to a target via OpenMP we need to include the
1129 // openmp_wrappers folder which contains alternative system headers.
1130 if (JA.isDeviceOffloading(Action::OFK_OpenMP) &&
1131 !Args.hasArg(options::OPT_nostdinc) &&
1132 !Args.hasArg(options::OPT_nogpuinc) &&
1133 (getToolChain().getTriple().isNVPTX() ||
1134 getToolChain().getTriple().isAMDGCN())) {
1135 if (!Args.hasArg(options::OPT_nobuiltininc)) {
1136 // Add openmp_wrappers/* to our system include path. This lets us wrap
1137 // standard library headers.
1138 SmallString<128> P(D.ResourceDir);
1139 llvm::sys::path::append(P, "include");
1140 llvm::sys::path::append(P, "openmp_wrappers");
1141 CmdArgs.push_back("-internal-isystem");
1142 CmdArgs.push_back(Args.MakeArgString(P));
1143 }
1144
1145 CmdArgs.push_back("-include");
1146 CmdArgs.push_back("__clang_openmp_device_functions.h");
1147 }
1148
1149 // Add -i* options, and automatically translate to
1150 // -include-pch/-include-pth for transparent PCH support. It's
1151 // wonky, but we include looking for .gch so we can support seamless
1152 // replacement into a build system already set up to be generating
1153 // .gch files.
1154
1155 if (getToolChain().getDriver().IsCLMode()) {
1156 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1157 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1158 if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1159 JA.getKind() <= Action::AssembleJobClass) {
1160 CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1161 // -fpch-instantiate-templates is the default when creating
1162 // precomp using /Yc
1163 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
1164 options::OPT_fno_pch_instantiate_templates, true))
1165 CmdArgs.push_back(Args.MakeArgString("-fpch-instantiate-templates"));
1166 }
1167 if (YcArg || YuArg) {
1168 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1169 if (!isa<PrecompileJobAction>(JA)) {
1170 CmdArgs.push_back("-include-pch");
1171 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1172 C, !ThroughHeader.empty()
1173 ? ThroughHeader
1174 : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1175 }
1176
1177 if (ThroughHeader.empty()) {
1178 CmdArgs.push_back(Args.MakeArgString(
1179 Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1180 } else {
1181 CmdArgs.push_back(
1182 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1183 }
1184 }
1185 }
1186
1187 bool RenderedImplicitInclude = false;
1188 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1189 if (A->getOption().matches(options::OPT_include) &&
1190 D.getProbePrecompiled()) {
1191 // Handling of gcc-style gch precompiled headers.
1192 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1193 RenderedImplicitInclude = true;
1194
1195 bool FoundPCH = false;
1196 SmallString<128> P(A->getValue());
1197 // We want the files to have a name like foo.h.pch. Add a dummy extension
1198 // so that replace_extension does the right thing.
1199 P += ".dummy";
1200 llvm::sys::path::replace_extension(P, "pch");
1201 if (D.getVFS().exists(P))
1202 FoundPCH = true;
1203
1204 if (!FoundPCH) {
1205 // For GCC compat, probe for a file or directory ending in .gch instead.
1206 llvm::sys::path::replace_extension(P, "gch");
1207 FoundPCH = gchProbe(D, P.str());
1208 }
1209
1210 if (FoundPCH) {
1211 if (IsFirstImplicitInclude) {
1212 A->claim();
1213 CmdArgs.push_back("-include-pch");
1214 CmdArgs.push_back(Args.MakeArgString(P));
1215 continue;
1216 } else {
1217 // Ignore the PCH if not first on command line and emit warning.
1218 D.Diag(diag::warn_drv_pch_not_first_include) << P
1219 << A->getAsString(Args);
1220 }
1221 }
1222 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1223 // Handling of paths which must come late. These entries are handled by
1224 // the toolchain itself after the resource dir is inserted in the right
1225 // search order.
1226 // Do not claim the argument so that the use of the argument does not
1227 // silently go unnoticed on toolchains which do not honour the option.
1228 continue;
1229 } else if (A->getOption().matches(options::OPT_stdlibxx_isystem)) {
1230 // Translated to -internal-isystem by the driver, no need to pass to cc1.
1231 continue;
1232 } else if (A->getOption().matches(options::OPT_ibuiltininc)) {
1233 // This is used only by the driver. No need to pass to cc1.
1234 continue;
1235 }
1236
1237 // Not translated, render as usual.
1238 A->claim();
1239 A->render(Args, CmdArgs);
1240 }
1241
1242 Args.addAllArgs(CmdArgs,
1243 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1244 options::OPT_F, options::OPT_index_header_map});
1245
1246 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1247
1248 // FIXME: There is a very unfortunate problem here, some troubled
1249 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1250 // really support that we would have to parse and then translate
1251 // those options. :(
1252 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1253 options::OPT_Xpreprocessor);
1254
1255 // -I- is a deprecated GCC feature, reject it.
1256 if (Arg *A = Args.getLastArg(options::OPT_I_))
1257 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1258
1259 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1260 // -isysroot to the CC1 invocation.
1261 StringRef sysroot = C.getSysRoot();
1262 if (sysroot != "") {
1263 if (!Args.hasArg(options::OPT_isysroot)) {
1264 CmdArgs.push_back("-isysroot");
1265 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1266 }
1267 }
1268
1269 // Parse additional include paths from environment variables.
1270 // FIXME: We should probably sink the logic for handling these from the
1271 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1272 // CPATH - included following the user specified includes (but prior to
1273 // builtin and standard includes).
1274 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1275 // C_INCLUDE_PATH - system includes enabled when compiling C.
1276 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1277 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1278 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1279 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1280 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1281 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1282 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1283
1284 // While adding the include arguments, we also attempt to retrieve the
1285 // arguments of related offloading toolchains or arguments that are specific
1286 // of an offloading programming model.
1287
1288 // Add C++ include arguments, if needed.
1289 if (types::isCXX(Inputs[0].getType())) {
1290 bool HasStdlibxxIsystem = Args.hasArg(options::OPT_stdlibxx_isystem);
1291 forAllAssociatedToolChains(
1292 C, JA, getToolChain(),
1293 [&Args, &CmdArgs, HasStdlibxxIsystem](const ToolChain &TC) {
1294 HasStdlibxxIsystem ? TC.AddClangCXXStdlibIsystemArgs(Args, CmdArgs)
1295 : TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1296 });
1297 }
1298
1299 // Add system include arguments for all targets but IAMCU.
1300 if (!IsIAMCU)
1301 forAllAssociatedToolChains(C, JA, getToolChain(),
1302 [&Args, &CmdArgs](const ToolChain &TC) {
1303 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1304 });
1305 else {
1306 // For IAMCU add special include arguments.
1307 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1308 }
1309
1310 addMacroPrefixMapArg(D, Args, CmdArgs);
1311 addCoveragePrefixMapArg(D, Args, CmdArgs);
1312
1313 Args.AddLastArg(CmdArgs, options::OPT_ffile_reproducible,
1314 options::OPT_fno_file_reproducible);
1315
1316 if (const char *Epoch = std::getenv("SOURCE_DATE_EPOCH")) {
1317 CmdArgs.push_back("-source-date-epoch");
1318 CmdArgs.push_back(Args.MakeArgString(Epoch));
1319 }
1320
1321 Args.addOptInFlag(CmdArgs, options::OPT_fdefine_target_os_macros,
1322 options::OPT_fno_define_target_os_macros);
1323 }
1324
1325 // FIXME: Move to target hook.
isSignedCharDefault(const llvm::Triple & Triple)1326 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1327 switch (Triple.getArch()) {
1328 default:
1329 return true;
1330
1331 case llvm::Triple::aarch64:
1332 case llvm::Triple::aarch64_32:
1333 case llvm::Triple::aarch64_be:
1334 case llvm::Triple::arm:
1335 case llvm::Triple::armeb:
1336 case llvm::Triple::thumb:
1337 case llvm::Triple::thumbeb:
1338 if (Triple.isOSDarwin() || Triple.isOSWindows())
1339 return true;
1340 return false;
1341
1342 case llvm::Triple::ppc:
1343 case llvm::Triple::ppc64:
1344 if (Triple.isOSDarwin())
1345 return true;
1346 return false;
1347
1348 case llvm::Triple::hexagon:
1349 case llvm::Triple::ppcle:
1350 case llvm::Triple::ppc64le:
1351 case llvm::Triple::riscv32:
1352 case llvm::Triple::riscv64:
1353 case llvm::Triple::systemz:
1354 case llvm::Triple::xcore:
1355 return false;
1356 }
1357 }
1358
hasMultipleInvocations(const llvm::Triple & Triple,const ArgList & Args)1359 static bool hasMultipleInvocations(const llvm::Triple &Triple,
1360 const ArgList &Args) {
1361 // Supported only on Darwin where we invoke the compiler multiple times
1362 // followed by an invocation to lipo.
1363 if (!Triple.isOSDarwin())
1364 return false;
1365 // If more than one "-arch <arch>" is specified, we're targeting multiple
1366 // architectures resulting in a fat binary.
1367 return Args.getAllArgValues(options::OPT_arch).size() > 1;
1368 }
1369
checkRemarksOptions(const Driver & D,const ArgList & Args,const llvm::Triple & Triple)1370 static bool checkRemarksOptions(const Driver &D, const ArgList &Args,
1371 const llvm::Triple &Triple) {
1372 // When enabling remarks, we need to error if:
1373 // * The remark file is specified but we're targeting multiple architectures,
1374 // which means more than one remark file is being generated.
1375 bool hasMultipleInvocations = ::hasMultipleInvocations(Triple, Args);
1376 bool hasExplicitOutputFile =
1377 Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1378 if (hasMultipleInvocations && hasExplicitOutputFile) {
1379 D.Diag(diag::err_drv_invalid_output_with_multiple_archs)
1380 << "-foptimization-record-file";
1381 return false;
1382 }
1383 return true;
1384 }
1385
renderRemarksOptions(const ArgList & Args,ArgStringList & CmdArgs,const llvm::Triple & Triple,const InputInfo & Input,const InputInfo & Output,const JobAction & JA)1386 static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,
1387 const llvm::Triple &Triple,
1388 const InputInfo &Input,
1389 const InputInfo &Output, const JobAction &JA) {
1390 StringRef Format = "yaml";
1391 if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
1392 Format = A->getValue();
1393
1394 CmdArgs.push_back("-opt-record-file");
1395
1396 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1397 if (A) {
1398 CmdArgs.push_back(A->getValue());
1399 } else {
1400 bool hasMultipleArchs =
1401 Triple.isOSDarwin() && // Only supported on Darwin platforms.
1402 Args.getAllArgValues(options::OPT_arch).size() > 1;
1403
1404 SmallString<128> F;
1405
1406 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
1407 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
1408 F = FinalOutput->getValue();
1409 } else {
1410 if (Format != "yaml" && // For YAML, keep the original behavior.
1411 Triple.isOSDarwin() && // Enable this only on darwin, since it's the only platform supporting .dSYM bundles.
1412 Output.isFilename())
1413 F = Output.getFilename();
1414 }
1415
1416 if (F.empty()) {
1417 // Use the input filename.
1418 F = llvm::sys::path::stem(Input.getBaseInput());
1419
1420 // If we're compiling for an offload architecture (i.e. a CUDA device),
1421 // we need to make the file name for the device compilation different
1422 // from the host compilation.
1423 if (!JA.isDeviceOffloading(Action::OFK_None) &&
1424 !JA.isDeviceOffloading(Action::OFK_Host)) {
1425 llvm::sys::path::replace_extension(F, "");
1426 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
1427 Triple.normalize());
1428 F += "-";
1429 F += JA.getOffloadingArch();
1430 }
1431 }
1432
1433 // If we're having more than one "-arch", we should name the files
1434 // differently so that every cc1 invocation writes to a different file.
1435 // We're doing that by appending "-<arch>" with "<arch>" being the arch
1436 // name from the triple.
1437 if (hasMultipleArchs) {
1438 // First, remember the extension.
1439 SmallString<64> OldExtension = llvm::sys::path::extension(F);
1440 // then, remove it.
1441 llvm::sys::path::replace_extension(F, "");
1442 // attach -<arch> to it.
1443 F += "-";
1444 F += Triple.getArchName();
1445 // put back the extension.
1446 llvm::sys::path::replace_extension(F, OldExtension);
1447 }
1448
1449 SmallString<32> Extension;
1450 Extension += "opt.";
1451 Extension += Format;
1452
1453 llvm::sys::path::replace_extension(F, Extension);
1454 CmdArgs.push_back(Args.MakeArgString(F));
1455 }
1456
1457 if (const Arg *A =
1458 Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
1459 CmdArgs.push_back("-opt-record-passes");
1460 CmdArgs.push_back(A->getValue());
1461 }
1462
1463 if (!Format.empty()) {
1464 CmdArgs.push_back("-opt-record-format");
1465 CmdArgs.push_back(Format.data());
1466 }
1467 }
1468
AddAAPCSVolatileBitfieldArgs(const ArgList & Args,ArgStringList & CmdArgs)1469 void AddAAPCSVolatileBitfieldArgs(const ArgList &Args, ArgStringList &CmdArgs) {
1470 if (!Args.hasFlag(options::OPT_faapcs_bitfield_width,
1471 options::OPT_fno_aapcs_bitfield_width, true))
1472 CmdArgs.push_back("-fno-aapcs-bitfield-width");
1473
1474 if (Args.getLastArg(options::OPT_ForceAAPCSBitfieldLoad))
1475 CmdArgs.push_back("-faapcs-bitfield-load");
1476 }
1477
1478 namespace {
RenderARMABI(const Driver & D,const llvm::Triple & Triple,const ArgList & Args,ArgStringList & CmdArgs)1479 void RenderARMABI(const Driver &D, const llvm::Triple &Triple,
1480 const ArgList &Args, ArgStringList &CmdArgs) {
1481 // Select the ABI to use.
1482 // FIXME: Support -meabi.
1483 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1484 const char *ABIName = nullptr;
1485 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1486 ABIName = A->getValue();
1487 } else {
1488 std::string CPU = getCPUName(D, Args, Triple, /*FromAs*/ false);
1489 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1490 }
1491
1492 CmdArgs.push_back("-target-abi");
1493 CmdArgs.push_back(ABIName);
1494 }
1495
AddUnalignedAccessWarning(ArgStringList & CmdArgs)1496 void AddUnalignedAccessWarning(ArgStringList &CmdArgs) {
1497 auto StrictAlignIter =
1498 llvm::find_if(llvm::reverse(CmdArgs), [](StringRef Arg) {
1499 return Arg == "+strict-align" || Arg == "-strict-align";
1500 });
1501 if (StrictAlignIter != CmdArgs.rend() &&
1502 StringRef(*StrictAlignIter) == "+strict-align")
1503 CmdArgs.push_back("-Wunaligned-access");
1504 }
1505 }
1506
CollectARMPACBTIOptions(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs,bool isAArch64)1507 static void CollectARMPACBTIOptions(const ToolChain &TC, const ArgList &Args,
1508 ArgStringList &CmdArgs, bool isAArch64) {
1509 const Arg *A = isAArch64
1510 ? Args.getLastArg(options::OPT_msign_return_address_EQ,
1511 options::OPT_mbranch_protection_EQ)
1512 : Args.getLastArg(options::OPT_mbranch_protection_EQ);
1513 if (!A)
1514 return;
1515
1516 const Driver &D = TC.getDriver();
1517 const llvm::Triple &Triple = TC.getEffectiveTriple();
1518 if (!(isAArch64 || (Triple.isArmT32() && Triple.isArmMClass())))
1519 D.Diag(diag::warn_incompatible_branch_protection_option)
1520 << Triple.getArchName();
1521
1522 StringRef Scope, Key;
1523 bool IndirectBranches, BranchProtectionPAuthLR, GuardedControlStack;
1524
1525 if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1526 Scope = A->getValue();
1527 if (Scope != "none" && Scope != "non-leaf" && Scope != "all")
1528 D.Diag(diag::err_drv_unsupported_option_argument)
1529 << A->getSpelling() << Scope;
1530 Key = "a_key";
1531 IndirectBranches = false;
1532 BranchProtectionPAuthLR = false;
1533 GuardedControlStack = false;
1534 } else {
1535 StringRef DiagMsg;
1536 llvm::ARM::ParsedBranchProtection PBP;
1537 if (!llvm::ARM::parseBranchProtection(A->getValue(), PBP, DiagMsg))
1538 D.Diag(diag::err_drv_unsupported_option_argument)
1539 << A->getSpelling() << DiagMsg;
1540 if (!isAArch64 && PBP.Key == "b_key")
1541 D.Diag(diag::warn_unsupported_branch_protection)
1542 << "b-key" << A->getAsString(Args);
1543 Scope = PBP.Scope;
1544 Key = PBP.Key;
1545 BranchProtectionPAuthLR = PBP.BranchProtectionPAuthLR;
1546 IndirectBranches = PBP.BranchTargetEnforcement;
1547 GuardedControlStack = PBP.GuardedControlStack;
1548 }
1549
1550 CmdArgs.push_back(
1551 Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1552 if (!Scope.equals("none"))
1553 CmdArgs.push_back(
1554 Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1555 if (BranchProtectionPAuthLR)
1556 CmdArgs.push_back(
1557 Args.MakeArgString(Twine("-mbranch-protection-pauth-lr")));
1558 if (IndirectBranches)
1559 CmdArgs.push_back("-mbranch-target-enforce");
1560 if (GuardedControlStack)
1561 CmdArgs.push_back("-mguarded-control-stack");
1562 }
1563
AddARMTargetArgs(const llvm::Triple & Triple,const ArgList & Args,ArgStringList & CmdArgs,bool KernelOrKext) const1564 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1565 ArgStringList &CmdArgs, bool KernelOrKext) const {
1566 RenderARMABI(getToolChain().getDriver(), Triple, Args, CmdArgs);
1567
1568 // Determine floating point ABI from the options & target defaults.
1569 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1570 if (ABI == arm::FloatABI::Soft) {
1571 // Floating point operations and argument passing are soft.
1572 // FIXME: This changes CPP defines, we need -target-soft-float.
1573 CmdArgs.push_back("-msoft-float");
1574 CmdArgs.push_back("-mfloat-abi");
1575 CmdArgs.push_back("soft");
1576 } else if (ABI == arm::FloatABI::SoftFP) {
1577 // Floating point operations are hard, but argument passing is soft.
1578 CmdArgs.push_back("-mfloat-abi");
1579 CmdArgs.push_back("soft");
1580 } else {
1581 // Floating point operations and argument passing are hard.
1582 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1583 CmdArgs.push_back("-mfloat-abi");
1584 CmdArgs.push_back("hard");
1585 }
1586
1587 // Forward the -mglobal-merge option for explicit control over the pass.
1588 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1589 options::OPT_mno_global_merge)) {
1590 CmdArgs.push_back("-mllvm");
1591 if (A->getOption().matches(options::OPT_mno_global_merge))
1592 CmdArgs.push_back("-arm-global-merge=false");
1593 else
1594 CmdArgs.push_back("-arm-global-merge=true");
1595 }
1596
1597 if (!Args.hasFlag(options::OPT_mimplicit_float,
1598 options::OPT_mno_implicit_float, true))
1599 CmdArgs.push_back("-no-implicit-float");
1600
1601 if (Args.getLastArg(options::OPT_mcmse))
1602 CmdArgs.push_back("-mcmse");
1603
1604 AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);
1605
1606 // Enable/disable return address signing and indirect branch targets.
1607 CollectARMPACBTIOptions(getToolChain(), Args, CmdArgs, false /*isAArch64*/);
1608
1609 AddUnalignedAccessWarning(CmdArgs);
1610 }
1611
RenderTargetOptions(const llvm::Triple & EffectiveTriple,const ArgList & Args,bool KernelOrKext,ArgStringList & CmdArgs) const1612 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1613 const ArgList &Args, bool KernelOrKext,
1614 ArgStringList &CmdArgs) const {
1615 const ToolChain &TC = getToolChain();
1616
1617 // Add the target features
1618 getTargetFeatures(TC.getDriver(), EffectiveTriple, Args, CmdArgs, false);
1619
1620 // Add target specific flags.
1621 switch (TC.getArch()) {
1622 default:
1623 break;
1624
1625 case llvm::Triple::arm:
1626 case llvm::Triple::armeb:
1627 case llvm::Triple::thumb:
1628 case llvm::Triple::thumbeb:
1629 // Use the effective triple, which takes into account the deployment target.
1630 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1631 break;
1632
1633 case llvm::Triple::aarch64:
1634 case llvm::Triple::aarch64_32:
1635 case llvm::Triple::aarch64_be:
1636 AddAArch64TargetArgs(Args, CmdArgs);
1637 break;
1638
1639 case llvm::Triple::loongarch32:
1640 case llvm::Triple::loongarch64:
1641 AddLoongArchTargetArgs(Args, CmdArgs);
1642 break;
1643
1644 case llvm::Triple::mips:
1645 case llvm::Triple::mipsel:
1646 case llvm::Triple::mips64:
1647 case llvm::Triple::mips64el:
1648 AddMIPSTargetArgs(Args, CmdArgs);
1649 break;
1650
1651 case llvm::Triple::ppc:
1652 case llvm::Triple::ppcle:
1653 case llvm::Triple::ppc64:
1654 case llvm::Triple::ppc64le:
1655 AddPPCTargetArgs(Args, CmdArgs);
1656 break;
1657
1658 case llvm::Triple::riscv32:
1659 case llvm::Triple::riscv64:
1660 AddRISCVTargetArgs(Args, CmdArgs);
1661 break;
1662
1663 case llvm::Triple::sparc:
1664 case llvm::Triple::sparcel:
1665 case llvm::Triple::sparcv9:
1666 AddSparcTargetArgs(Args, CmdArgs);
1667 break;
1668
1669 case llvm::Triple::systemz:
1670 AddSystemZTargetArgs(Args, CmdArgs);
1671 break;
1672
1673 case llvm::Triple::x86:
1674 case llvm::Triple::x86_64:
1675 AddX86TargetArgs(Args, CmdArgs);
1676 break;
1677
1678 case llvm::Triple::lanai:
1679 AddLanaiTargetArgs(Args, CmdArgs);
1680 break;
1681
1682 case llvm::Triple::hexagon:
1683 AddHexagonTargetArgs(Args, CmdArgs);
1684 break;
1685
1686 case llvm::Triple::wasm32:
1687 case llvm::Triple::wasm64:
1688 AddWebAssemblyTargetArgs(Args, CmdArgs);
1689 break;
1690
1691 case llvm::Triple::ve:
1692 AddVETargetArgs(Args, CmdArgs);
1693 break;
1694 }
1695 }
1696
1697 namespace {
RenderAArch64ABI(const llvm::Triple & Triple,const ArgList & Args,ArgStringList & CmdArgs)1698 void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1699 ArgStringList &CmdArgs) {
1700 const char *ABIName = nullptr;
1701 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1702 ABIName = A->getValue();
1703 else if (Triple.isOSDarwin())
1704 ABIName = "darwinpcs";
1705 else
1706 ABIName = "aapcs";
1707
1708 CmdArgs.push_back("-target-abi");
1709 CmdArgs.push_back(ABIName);
1710 }
1711 }
1712
AddAArch64TargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const1713 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1714 ArgStringList &CmdArgs) const {
1715 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1716
1717 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1718 Args.hasArg(options::OPT_mkernel) ||
1719 Args.hasArg(options::OPT_fapple_kext))
1720 CmdArgs.push_back("-disable-red-zone");
1721
1722 if (!Args.hasFlag(options::OPT_mimplicit_float,
1723 options::OPT_mno_implicit_float, true))
1724 CmdArgs.push_back("-no-implicit-float");
1725
1726 RenderAArch64ABI(Triple, Args, CmdArgs);
1727
1728 // Forward the -mglobal-merge option for explicit control over the pass.
1729 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1730 options::OPT_mno_global_merge)) {
1731 CmdArgs.push_back("-mllvm");
1732 if (A->getOption().matches(options::OPT_mno_global_merge))
1733 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1734 else
1735 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1736 }
1737
1738 // Enable/disable return address signing and indirect branch targets.
1739 CollectARMPACBTIOptions(getToolChain(), Args, CmdArgs, true /*isAArch64*/);
1740
1741 // Handle -msve_vector_bits=<bits>
1742 if (Arg *A = Args.getLastArg(options::OPT_msve_vector_bits_EQ)) {
1743 StringRef Val = A->getValue();
1744 const Driver &D = getToolChain().getDriver();
1745 if (Val.equals("128") || Val.equals("256") || Val.equals("512") ||
1746 Val.equals("1024") || Val.equals("2048") || Val.equals("128+") ||
1747 Val.equals("256+") || Val.equals("512+") || Val.equals("1024+") ||
1748 Val.equals("2048+")) {
1749 unsigned Bits = 0;
1750 if (Val.ends_with("+"))
1751 Val = Val.substr(0, Val.size() - 1);
1752 else {
1753 bool Invalid = Val.getAsInteger(10, Bits); (void)Invalid;
1754 assert(!Invalid && "Failed to parse value");
1755 CmdArgs.push_back(
1756 Args.MakeArgString("-mvscale-max=" + llvm::Twine(Bits / 128)));
1757 }
1758
1759 bool Invalid = Val.getAsInteger(10, Bits); (void)Invalid;
1760 assert(!Invalid && "Failed to parse value");
1761 CmdArgs.push_back(
1762 Args.MakeArgString("-mvscale-min=" + llvm::Twine(Bits / 128)));
1763 // Silently drop requests for vector-length agnostic code as it's implied.
1764 } else if (!Val.equals("scalable"))
1765 // Handle the unsupported values passed to msve-vector-bits.
1766 D.Diag(diag::err_drv_unsupported_option_argument)
1767 << A->getSpelling() << Val;
1768 }
1769
1770 AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);
1771
1772 if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)) {
1773 CmdArgs.push_back("-tune-cpu");
1774 if (strcmp(A->getValue(), "native") == 0)
1775 CmdArgs.push_back(Args.MakeArgString(llvm::sys::getHostCPUName()));
1776 else
1777 CmdArgs.push_back(A->getValue());
1778 }
1779
1780 AddUnalignedAccessWarning(CmdArgs);
1781 }
1782
AddLoongArchTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const1783 void Clang::AddLoongArchTargetArgs(const ArgList &Args,
1784 ArgStringList &CmdArgs) const {
1785 const llvm::Triple &Triple = getToolChain().getTriple();
1786
1787 CmdArgs.push_back("-target-abi");
1788 CmdArgs.push_back(
1789 loongarch::getLoongArchABI(getToolChain().getDriver(), Args, Triple)
1790 .data());
1791
1792 // Handle -mtune.
1793 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
1794 std::string TuneCPU = A->getValue();
1795 TuneCPU = loongarch::postProcessTargetCPUString(TuneCPU, Triple);
1796 CmdArgs.push_back("-tune-cpu");
1797 CmdArgs.push_back(Args.MakeArgString(TuneCPU));
1798 }
1799 }
1800
AddMIPSTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const1801 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1802 ArgStringList &CmdArgs) const {
1803 const Driver &D = getToolChain().getDriver();
1804 StringRef CPUName;
1805 StringRef ABIName;
1806 const llvm::Triple &Triple = getToolChain().getTriple();
1807 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1808
1809 CmdArgs.push_back("-target-abi");
1810 CmdArgs.push_back(ABIName.data());
1811
1812 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args, Triple);
1813 if (ABI == mips::FloatABI::Soft) {
1814 // Floating point operations and argument passing are soft.
1815 CmdArgs.push_back("-msoft-float");
1816 CmdArgs.push_back("-mfloat-abi");
1817 CmdArgs.push_back("soft");
1818 } else {
1819 // Floating point operations and argument passing are hard.
1820 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1821 CmdArgs.push_back("-mfloat-abi");
1822 CmdArgs.push_back("hard");
1823 }
1824
1825 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1826 options::OPT_mno_ldc1_sdc1)) {
1827 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1828 CmdArgs.push_back("-mllvm");
1829 CmdArgs.push_back("-mno-ldc1-sdc1");
1830 }
1831 }
1832
1833 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1834 options::OPT_mno_check_zero_division)) {
1835 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1836 CmdArgs.push_back("-mllvm");
1837 CmdArgs.push_back("-mno-check-zero-division");
1838 }
1839 }
1840
1841 if (Args.getLastArg(options::OPT_mfix4300)) {
1842 CmdArgs.push_back("-mllvm");
1843 CmdArgs.push_back("-mfix4300");
1844 }
1845
1846 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1847 StringRef v = A->getValue();
1848 CmdArgs.push_back("-mllvm");
1849 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1850 A->claim();
1851 }
1852
1853 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1854 Arg *ABICalls =
1855 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1856
1857 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1858 // -mgpopt is the default for static, -fno-pic environments but these two
1859 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1860 // the only case where -mllvm -mgpopt is passed.
1861 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1862 // passed explicitly when compiling something with -mabicalls
1863 // (implictly) in affect. Currently the warning is in the backend.
1864 //
1865 // When the ABI in use is N64, we also need to determine the PIC mode that
1866 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1867 bool NoABICalls =
1868 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1869
1870 llvm::Reloc::Model RelocationModel;
1871 unsigned PICLevel;
1872 bool IsPIE;
1873 std::tie(RelocationModel, PICLevel, IsPIE) =
1874 ParsePICArgs(getToolChain(), Args);
1875
1876 NoABICalls = NoABICalls ||
1877 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1878
1879 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1880 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1881 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1882 CmdArgs.push_back("-mllvm");
1883 CmdArgs.push_back("-mgpopt");
1884
1885 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1886 options::OPT_mno_local_sdata);
1887 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1888 options::OPT_mno_extern_sdata);
1889 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1890 options::OPT_mno_embedded_data);
1891 if (LocalSData) {
1892 CmdArgs.push_back("-mllvm");
1893 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1894 CmdArgs.push_back("-mlocal-sdata=1");
1895 } else {
1896 CmdArgs.push_back("-mlocal-sdata=0");
1897 }
1898 LocalSData->claim();
1899 }
1900
1901 if (ExternSData) {
1902 CmdArgs.push_back("-mllvm");
1903 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1904 CmdArgs.push_back("-mextern-sdata=1");
1905 } else {
1906 CmdArgs.push_back("-mextern-sdata=0");
1907 }
1908 ExternSData->claim();
1909 }
1910
1911 if (EmbeddedData) {
1912 CmdArgs.push_back("-mllvm");
1913 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1914 CmdArgs.push_back("-membedded-data=1");
1915 } else {
1916 CmdArgs.push_back("-membedded-data=0");
1917 }
1918 EmbeddedData->claim();
1919 }
1920
1921 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1922 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1923
1924 if (GPOpt)
1925 GPOpt->claim();
1926
1927 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1928 StringRef Val = StringRef(A->getValue());
1929 if (mips::hasCompactBranches(CPUName)) {
1930 if (Val == "never" || Val == "always" || Val == "optimal") {
1931 CmdArgs.push_back("-mllvm");
1932 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1933 } else
1934 D.Diag(diag::err_drv_unsupported_option_argument)
1935 << A->getSpelling() << Val;
1936 } else
1937 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1938 }
1939
1940 if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,
1941 options::OPT_mno_relax_pic_calls)) {
1942 if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {
1943 CmdArgs.push_back("-mllvm");
1944 CmdArgs.push_back("-mips-jalr-reloc=0");
1945 }
1946 }
1947 }
1948
AddPPCTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const1949 void Clang::AddPPCTargetArgs(const ArgList &Args,
1950 ArgStringList &CmdArgs) const {
1951 const Driver &D = getToolChain().getDriver();
1952 const llvm::Triple &T = getToolChain().getTriple();
1953 if (Args.getLastArg(options::OPT_mtune_EQ)) {
1954 CmdArgs.push_back("-tune-cpu");
1955 std::string CPU = ppc::getPPCTuneCPU(Args, T);
1956 CmdArgs.push_back(Args.MakeArgString(CPU));
1957 }
1958
1959 // Select the ABI to use.
1960 const char *ABIName = nullptr;
1961 if (T.isOSBinFormatELF()) {
1962 switch (getToolChain().getArch()) {
1963 case llvm::Triple::ppc64: {
1964 if (T.isPPC64ELFv2ABI())
1965 ABIName = "elfv2";
1966 else
1967 ABIName = "elfv1";
1968 break;
1969 }
1970 case llvm::Triple::ppc64le:
1971 ABIName = "elfv2";
1972 break;
1973 default:
1974 break;
1975 }
1976 }
1977
1978 bool IEEELongDouble = getToolChain().defaultToIEEELongDouble();
1979 bool VecExtabi = false;
1980 for (const Arg *A : Args.filtered(options::OPT_mabi_EQ)) {
1981 StringRef V = A->getValue();
1982 if (V == "ieeelongdouble") {
1983 IEEELongDouble = true;
1984 A->claim();
1985 } else if (V == "ibmlongdouble") {
1986 IEEELongDouble = false;
1987 A->claim();
1988 } else if (V == "vec-default") {
1989 VecExtabi = false;
1990 A->claim();
1991 } else if (V == "vec-extabi") {
1992 VecExtabi = true;
1993 A->claim();
1994 } else if (V == "elfv1") {
1995 ABIName = "elfv1";
1996 A->claim();
1997 } else if (V == "elfv2") {
1998 ABIName = "elfv2";
1999 A->claim();
2000 } else if (V != "altivec")
2001 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
2002 // the option if given as we don't have backend support for any targets
2003 // that don't use the altivec abi.
2004 ABIName = A->getValue();
2005 }
2006 if (IEEELongDouble)
2007 CmdArgs.push_back("-mabi=ieeelongdouble");
2008 if (VecExtabi) {
2009 if (!T.isOSAIX())
2010 D.Diag(diag::err_drv_unsupported_opt_for_target)
2011 << "-mabi=vec-extabi" << T.str();
2012 CmdArgs.push_back("-mabi=vec-extabi");
2013 }
2014
2015 ppc::FloatABI FloatABI = ppc::getPPCFloatABI(D, Args);
2016 if (FloatABI == ppc::FloatABI::Soft) {
2017 // Floating point operations and argument passing are soft.
2018 CmdArgs.push_back("-msoft-float");
2019 CmdArgs.push_back("-mfloat-abi");
2020 CmdArgs.push_back("soft");
2021 } else {
2022 // Floating point operations and argument passing are hard.
2023 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
2024 CmdArgs.push_back("-mfloat-abi");
2025 CmdArgs.push_back("hard");
2026 }
2027
2028 if (ABIName) {
2029 CmdArgs.push_back("-target-abi");
2030 CmdArgs.push_back(ABIName);
2031 }
2032 }
2033
SetRISCVSmallDataLimit(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)2034 static void SetRISCVSmallDataLimit(const ToolChain &TC, const ArgList &Args,
2035 ArgStringList &CmdArgs) {
2036 const Driver &D = TC.getDriver();
2037 const llvm::Triple &Triple = TC.getTriple();
2038 // Default small data limitation is eight.
2039 const char *SmallDataLimit = "8";
2040 // Get small data limitation.
2041 if (Args.getLastArg(options::OPT_shared, options::OPT_fpic,
2042 options::OPT_fPIC)) {
2043 // Not support linker relaxation for PIC.
2044 SmallDataLimit = "0";
2045 if (Args.hasArg(options::OPT_G)) {
2046 D.Diag(diag::warn_drv_unsupported_sdata);
2047 }
2048 } else if (Args.getLastArgValue(options::OPT_mcmodel_EQ)
2049 .equals_insensitive("large") &&
2050 (Triple.getArch() == llvm::Triple::riscv64)) {
2051 // Not support linker relaxation for RV64 with large code model.
2052 SmallDataLimit = "0";
2053 if (Args.hasArg(options::OPT_G)) {
2054 D.Diag(diag::warn_drv_unsupported_sdata);
2055 }
2056 } else if (Triple.isAndroid()) {
2057 // GP relaxation is not supported on Android.
2058 SmallDataLimit = "0";
2059 if (Args.hasArg(options::OPT_G)) {
2060 D.Diag(diag::warn_drv_unsupported_sdata);
2061 }
2062 } else if (Arg *A = Args.getLastArg(options::OPT_G)) {
2063 SmallDataLimit = A->getValue();
2064 }
2065 // Forward the -msmall-data-limit= option.
2066 CmdArgs.push_back("-msmall-data-limit");
2067 CmdArgs.push_back(SmallDataLimit);
2068 }
2069
AddRISCVTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2070 void Clang::AddRISCVTargetArgs(const ArgList &Args,
2071 ArgStringList &CmdArgs) const {
2072 const llvm::Triple &Triple = getToolChain().getTriple();
2073 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
2074
2075 CmdArgs.push_back("-target-abi");
2076 CmdArgs.push_back(ABIName.data());
2077
2078 SetRISCVSmallDataLimit(getToolChain(), Args, CmdArgs);
2079
2080 if (!Args.hasFlag(options::OPT_mimplicit_float,
2081 options::OPT_mno_implicit_float, true))
2082 CmdArgs.push_back("-no-implicit-float");
2083
2084 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
2085 CmdArgs.push_back("-tune-cpu");
2086 if (strcmp(A->getValue(), "native") == 0)
2087 CmdArgs.push_back(Args.MakeArgString(llvm::sys::getHostCPUName()));
2088 else
2089 CmdArgs.push_back(A->getValue());
2090 }
2091
2092 // Handle -mrvv-vector-bits=<bits>
2093 if (Arg *A = Args.getLastArg(options::OPT_mrvv_vector_bits_EQ)) {
2094 StringRef Val = A->getValue();
2095 const Driver &D = getToolChain().getDriver();
2096
2097 // Get minimum VLen from march.
2098 unsigned MinVLen = 0;
2099 StringRef Arch = riscv::getRISCVArch(Args, Triple);
2100 auto ISAInfo = llvm::RISCVISAInfo::parseArchString(
2101 Arch, /*EnableExperimentalExtensions*/ true);
2102 // Ignore parsing error.
2103 if (!errorToBool(ISAInfo.takeError()))
2104 MinVLen = (*ISAInfo)->getMinVLen();
2105
2106 // If the value is "zvl", use MinVLen from march. Otherwise, try to parse
2107 // as integer as long as we have a MinVLen.
2108 unsigned Bits = 0;
2109 if (Val.equals("zvl") && MinVLen >= llvm::RISCV::RVVBitsPerBlock) {
2110 Bits = MinVLen;
2111 } else if (!Val.getAsInteger(10, Bits)) {
2112 // Only accept power of 2 values beteen RVVBitsPerBlock and 65536 that
2113 // at least MinVLen.
2114 if (Bits < MinVLen || Bits < llvm::RISCV::RVVBitsPerBlock ||
2115 Bits > 65536 || !llvm::isPowerOf2_32(Bits))
2116 Bits = 0;
2117 }
2118
2119 // If we got a valid value try to use it.
2120 if (Bits != 0) {
2121 unsigned VScaleMin = Bits / llvm::RISCV::RVVBitsPerBlock;
2122 CmdArgs.push_back(
2123 Args.MakeArgString("-mvscale-max=" + llvm::Twine(VScaleMin)));
2124 CmdArgs.push_back(
2125 Args.MakeArgString("-mvscale-min=" + llvm::Twine(VScaleMin)));
2126 } else if (!Val.equals("scalable")) {
2127 // Handle the unsupported values passed to mrvv-vector-bits.
2128 D.Diag(diag::err_drv_unsupported_option_argument)
2129 << A->getSpelling() << Val;
2130 }
2131 }
2132 }
2133
AddSparcTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2134 void Clang::AddSparcTargetArgs(const ArgList &Args,
2135 ArgStringList &CmdArgs) const {
2136 sparc::FloatABI FloatABI =
2137 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
2138
2139 if (FloatABI == sparc::FloatABI::Soft) {
2140 // Floating point operations and argument passing are soft.
2141 CmdArgs.push_back("-msoft-float");
2142 CmdArgs.push_back("-mfloat-abi");
2143 CmdArgs.push_back("soft");
2144 } else {
2145 // Floating point operations and argument passing are hard.
2146 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
2147 CmdArgs.push_back("-mfloat-abi");
2148 CmdArgs.push_back("hard");
2149 }
2150
2151 if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)) {
2152 StringRef Name = A->getValue();
2153 std::string TuneCPU;
2154 if (Name == "native")
2155 TuneCPU = std::string(llvm::sys::getHostCPUName());
2156 else
2157 TuneCPU = std::string(Name);
2158
2159 CmdArgs.push_back("-tune-cpu");
2160 CmdArgs.push_back(Args.MakeArgString(TuneCPU));
2161 }
2162 }
2163
AddSystemZTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2164 void Clang::AddSystemZTargetArgs(const ArgList &Args,
2165 ArgStringList &CmdArgs) const {
2166 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
2167 CmdArgs.push_back("-tune-cpu");
2168 if (strcmp(A->getValue(), "native") == 0)
2169 CmdArgs.push_back(Args.MakeArgString(llvm::sys::getHostCPUName()));
2170 else
2171 CmdArgs.push_back(A->getValue());
2172 }
2173
2174 bool HasBackchain =
2175 Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false);
2176 bool HasPackedStack = Args.hasFlag(options::OPT_mpacked_stack,
2177 options::OPT_mno_packed_stack, false);
2178 systemz::FloatABI FloatABI =
2179 systemz::getSystemZFloatABI(getToolChain().getDriver(), Args);
2180 bool HasSoftFloat = (FloatABI == systemz::FloatABI::Soft);
2181 if (HasBackchain && HasPackedStack && !HasSoftFloat) {
2182 const Driver &D = getToolChain().getDriver();
2183 D.Diag(diag::err_drv_unsupported_opt)
2184 << "-mpacked-stack -mbackchain -mhard-float";
2185 }
2186 if (HasBackchain)
2187 CmdArgs.push_back("-mbackchain");
2188 if (HasPackedStack)
2189 CmdArgs.push_back("-mpacked-stack");
2190 if (HasSoftFloat) {
2191 // Floating point operations and argument passing are soft.
2192 CmdArgs.push_back("-msoft-float");
2193 CmdArgs.push_back("-mfloat-abi");
2194 CmdArgs.push_back("soft");
2195 }
2196 }
2197
AddX86TargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2198 void Clang::AddX86TargetArgs(const ArgList &Args,
2199 ArgStringList &CmdArgs) const {
2200 const Driver &D = getToolChain().getDriver();
2201 addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/false);
2202
2203 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
2204 Args.hasArg(options::OPT_mkernel) ||
2205 Args.hasArg(options::OPT_fapple_kext))
2206 CmdArgs.push_back("-disable-red-zone");
2207
2208 if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
2209 options::OPT_mno_tls_direct_seg_refs, true))
2210 CmdArgs.push_back("-mno-tls-direct-seg-refs");
2211
2212 // Default to avoid implicit floating-point for kernel/kext code, but allow
2213 // that to be overridden with -mno-soft-float.
2214 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
2215 Args.hasArg(options::OPT_fapple_kext));
2216 if (Arg *A = Args.getLastArg(
2217 options::OPT_msoft_float, options::OPT_mno_soft_float,
2218 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
2219 const Option &O = A->getOption();
2220 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
2221 O.matches(options::OPT_msoft_float));
2222 }
2223 if (NoImplicitFloat)
2224 CmdArgs.push_back("-no-implicit-float");
2225
2226 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
2227 StringRef Value = A->getValue();
2228 if (Value == "intel" || Value == "att") {
2229 CmdArgs.push_back("-mllvm");
2230 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
2231 CmdArgs.push_back(Args.MakeArgString("-inline-asm=" + Value));
2232 } else {
2233 D.Diag(diag::err_drv_unsupported_option_argument)
2234 << A->getSpelling() << Value;
2235 }
2236 } else if (D.IsCLMode()) {
2237 CmdArgs.push_back("-mllvm");
2238 CmdArgs.push_back("-x86-asm-syntax=intel");
2239 }
2240
2241 if (Arg *A = Args.getLastArg(options::OPT_mskip_rax_setup,
2242 options::OPT_mno_skip_rax_setup))
2243 if (A->getOption().matches(options::OPT_mskip_rax_setup))
2244 CmdArgs.push_back(Args.MakeArgString("-mskip-rax-setup"));
2245
2246 // Set flags to support MCU ABI.
2247 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
2248 CmdArgs.push_back("-mfloat-abi");
2249 CmdArgs.push_back("soft");
2250 CmdArgs.push_back("-mstack-alignment=4");
2251 }
2252
2253 // Handle -mtune.
2254
2255 // Default to "generic" unless -march is present or targetting the PS4/PS5.
2256 std::string TuneCPU;
2257 if (!Args.hasArg(clang::driver::options::OPT_march_EQ) &&
2258 !getToolChain().getTriple().isPS())
2259 TuneCPU = "generic";
2260
2261 // Override based on -mtune.
2262 if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)) {
2263 StringRef Name = A->getValue();
2264
2265 if (Name == "native") {
2266 Name = llvm::sys::getHostCPUName();
2267 if (!Name.empty())
2268 TuneCPU = std::string(Name);
2269 } else
2270 TuneCPU = std::string(Name);
2271 }
2272
2273 if (!TuneCPU.empty()) {
2274 CmdArgs.push_back("-tune-cpu");
2275 CmdArgs.push_back(Args.MakeArgString(TuneCPU));
2276 }
2277 }
2278
AddHexagonTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2279 void Clang::AddHexagonTargetArgs(const ArgList &Args,
2280 ArgStringList &CmdArgs) const {
2281 CmdArgs.push_back("-mqdsp6-compat");
2282 CmdArgs.push_back("-Wreturn-type");
2283
2284 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
2285 CmdArgs.push_back("-mllvm");
2286 CmdArgs.push_back(
2287 Args.MakeArgString("-hexagon-small-data-threshold=" + Twine(*G)));
2288 }
2289
2290 if (!Args.hasArg(options::OPT_fno_short_enums))
2291 CmdArgs.push_back("-fshort-enums");
2292 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
2293 CmdArgs.push_back("-mllvm");
2294 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
2295 }
2296 CmdArgs.push_back("-mllvm");
2297 CmdArgs.push_back("-machine-sink-split=0");
2298 }
2299
AddLanaiTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2300 void Clang::AddLanaiTargetArgs(const ArgList &Args,
2301 ArgStringList &CmdArgs) const {
2302 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
2303 StringRef CPUName = A->getValue();
2304
2305 CmdArgs.push_back("-target-cpu");
2306 CmdArgs.push_back(Args.MakeArgString(CPUName));
2307 }
2308 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
2309 StringRef Value = A->getValue();
2310 // Only support mregparm=4 to support old usage. Report error for all other
2311 // cases.
2312 int Mregparm;
2313 if (Value.getAsInteger(10, Mregparm)) {
2314 if (Mregparm != 4) {
2315 getToolChain().getDriver().Diag(
2316 diag::err_drv_unsupported_option_argument)
2317 << A->getSpelling() << Value;
2318 }
2319 }
2320 }
2321 }
2322
AddWebAssemblyTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2323 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
2324 ArgStringList &CmdArgs) const {
2325 // Default to "hidden" visibility.
2326 if (!Args.hasArg(options::OPT_fvisibility_EQ,
2327 options::OPT_fvisibility_ms_compat))
2328 CmdArgs.push_back("-fvisibility=hidden");
2329 }
2330
AddVETargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2331 void Clang::AddVETargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const {
2332 // Floating point operations and argument passing are hard.
2333 CmdArgs.push_back("-mfloat-abi");
2334 CmdArgs.push_back("hard");
2335 }
2336
DumpCompilationDatabase(Compilation & C,StringRef Filename,StringRef Target,const InputInfo & Output,const InputInfo & Input,const ArgList & Args) const2337 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
2338 StringRef Target, const InputInfo &Output,
2339 const InputInfo &Input, const ArgList &Args) const {
2340 // If this is a dry run, do not create the compilation database file.
2341 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2342 return;
2343
2344 using llvm::yaml::escape;
2345 const Driver &D = getToolChain().getDriver();
2346
2347 if (!CompilationDatabase) {
2348 std::error_code EC;
2349 auto File = std::make_unique<llvm::raw_fd_ostream>(
2350 Filename, EC,
2351 llvm::sys::fs::OF_TextWithCRLF | llvm::sys::fs::OF_Append);
2352 if (EC) {
2353 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
2354 << EC.message();
2355 return;
2356 }
2357 CompilationDatabase = std::move(File);
2358 }
2359 auto &CDB = *CompilationDatabase;
2360 auto CWD = D.getVFS().getCurrentWorkingDirectory();
2361 if (!CWD)
2362 CWD = ".";
2363 CDB << "{ \"directory\": \"" << escape(*CWD) << "\"";
2364 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
2365 if (Output.isFilename())
2366 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
2367 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
2368 SmallString<128> Buf;
2369 Buf = "-x";
2370 Buf += types::getTypeName(Input.getType());
2371 CDB << ", \"" << escape(Buf) << "\"";
2372 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
2373 Buf = "--sysroot=";
2374 Buf += D.SysRoot;
2375 CDB << ", \"" << escape(Buf) << "\"";
2376 }
2377 CDB << ", \"" << escape(Input.getFilename()) << "\"";
2378 if (Output.isFilename())
2379 CDB << ", \"-o\", \"" << escape(Output.getFilename()) << "\"";
2380 for (auto &A: Args) {
2381 auto &O = A->getOption();
2382 // Skip language selection, which is positional.
2383 if (O.getID() == options::OPT_x)
2384 continue;
2385 // Skip writing dependency output and the compilation database itself.
2386 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
2387 continue;
2388 if (O.getID() == options::OPT_gen_cdb_fragment_path)
2389 continue;
2390 // Skip inputs.
2391 if (O.getKind() == Option::InputClass)
2392 continue;
2393 // Skip output.
2394 if (O.getID() == options::OPT_o)
2395 continue;
2396 // All other arguments are quoted and appended.
2397 ArgStringList ASL;
2398 A->render(Args, ASL);
2399 for (auto &it: ASL)
2400 CDB << ", \"" << escape(it) << "\"";
2401 }
2402 Buf = "--target=";
2403 Buf += Target;
2404 CDB << ", \"" << escape(Buf) << "\"]},\n";
2405 }
2406
DumpCompilationDatabaseFragmentToDir(StringRef Dir,Compilation & C,StringRef Target,const InputInfo & Output,const InputInfo & Input,const llvm::opt::ArgList & Args) const2407 void Clang::DumpCompilationDatabaseFragmentToDir(
2408 StringRef Dir, Compilation &C, StringRef Target, const InputInfo &Output,
2409 const InputInfo &Input, const llvm::opt::ArgList &Args) const {
2410 // If this is a dry run, do not create the compilation database file.
2411 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2412 return;
2413
2414 if (CompilationDatabase)
2415 DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2416
2417 SmallString<256> Path = Dir;
2418 const auto &Driver = C.getDriver();
2419 Driver.getVFS().makeAbsolute(Path);
2420 auto Err = llvm::sys::fs::create_directory(Path, /*IgnoreExisting=*/true);
2421 if (Err) {
2422 Driver.Diag(diag::err_drv_compilationdatabase) << Dir << Err.message();
2423 return;
2424 }
2425
2426 llvm::sys::path::append(
2427 Path,
2428 Twine(llvm::sys::path::filename(Input.getFilename())) + ".%%%%.json");
2429 int FD;
2430 SmallString<256> TempPath;
2431 Err = llvm::sys::fs::createUniqueFile(Path, FD, TempPath,
2432 llvm::sys::fs::OF_Text);
2433 if (Err) {
2434 Driver.Diag(diag::err_drv_compilationdatabase) << Path << Err.message();
2435 return;
2436 }
2437 CompilationDatabase =
2438 std::make_unique<llvm::raw_fd_ostream>(FD, /*shouldClose=*/true);
2439 DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2440 }
2441
CheckARMImplicitITArg(StringRef Value)2442 static bool CheckARMImplicitITArg(StringRef Value) {
2443 return Value == "always" || Value == "never" || Value == "arm" ||
2444 Value == "thumb";
2445 }
2446
AddARMImplicitITArgs(const ArgList & Args,ArgStringList & CmdArgs,StringRef Value)2447 static void AddARMImplicitITArgs(const ArgList &Args, ArgStringList &CmdArgs,
2448 StringRef Value) {
2449 CmdArgs.push_back("-mllvm");
2450 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2451 }
2452
CollectArgsForIntegratedAssembler(Compilation & C,const ArgList & Args,ArgStringList & CmdArgs,const Driver & D)2453 static void CollectArgsForIntegratedAssembler(Compilation &C,
2454 const ArgList &Args,
2455 ArgStringList &CmdArgs,
2456 const Driver &D) {
2457 if (UseRelaxAll(C, Args))
2458 CmdArgs.push_back("-mrelax-all");
2459
2460 // Only default to -mincremental-linker-compatible if we think we are
2461 // targeting the MSVC linker.
2462 bool DefaultIncrementalLinkerCompatible =
2463 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2464 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
2465 options::OPT_mno_incremental_linker_compatible,
2466 DefaultIncrementalLinkerCompatible))
2467 CmdArgs.push_back("-mincremental-linker-compatible");
2468
2469 Args.AddLastArg(CmdArgs, options::OPT_femit_dwarf_unwind_EQ);
2470
2471 Args.addOptInFlag(CmdArgs, options::OPT_femit_compact_unwind_non_canonical,
2472 options::OPT_fno_emit_compact_unwind_non_canonical);
2473
2474 // If you add more args here, also add them to the block below that
2475 // starts with "// If CollectArgsForIntegratedAssembler() isn't called below".
2476
2477 // When passing -I arguments to the assembler we sometimes need to
2478 // unconditionally take the next argument. For example, when parsing
2479 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2480 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2481 // arg after parsing the '-I' arg.
2482 bool TakeNextArg = false;
2483
2484 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2485 bool UseNoExecStack = false;
2486 const char *MipsTargetFeature = nullptr;
2487 StringRef ImplicitIt;
2488 for (const Arg *A :
2489 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler,
2490 options::OPT_mimplicit_it_EQ)) {
2491 A->claim();
2492
2493 if (A->getOption().getID() == options::OPT_mimplicit_it_EQ) {
2494 switch (C.getDefaultToolChain().getArch()) {
2495 case llvm::Triple::arm:
2496 case llvm::Triple::armeb:
2497 case llvm::Triple::thumb:
2498 case llvm::Triple::thumbeb:
2499 // Only store the value; the last value set takes effect.
2500 ImplicitIt = A->getValue();
2501 if (!CheckARMImplicitITArg(ImplicitIt))
2502 D.Diag(diag::err_drv_unsupported_option_argument)
2503 << A->getSpelling() << ImplicitIt;
2504 continue;
2505 default:
2506 break;
2507 }
2508 }
2509
2510 for (StringRef Value : A->getValues()) {
2511 if (TakeNextArg) {
2512 CmdArgs.push_back(Value.data());
2513 TakeNextArg = false;
2514 continue;
2515 }
2516
2517 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2518 Value == "-mbig-obj")
2519 continue; // LLVM handles bigobj automatically
2520
2521 switch (C.getDefaultToolChain().getArch()) {
2522 default:
2523 break;
2524 case llvm::Triple::wasm32:
2525 case llvm::Triple::wasm64:
2526 if (Value == "--no-type-check") {
2527 CmdArgs.push_back("-mno-type-check");
2528 continue;
2529 }
2530 break;
2531 case llvm::Triple::thumb:
2532 case llvm::Triple::thumbeb:
2533 case llvm::Triple::arm:
2534 case llvm::Triple::armeb:
2535 if (Value.starts_with("-mimplicit-it=")) {
2536 // Only store the value; the last value set takes effect.
2537 ImplicitIt = Value.split("=").second;
2538 if (CheckARMImplicitITArg(ImplicitIt))
2539 continue;
2540 }
2541 if (Value == "-mthumb")
2542 // -mthumb has already been processed in ComputeLLVMTriple()
2543 // recognize but skip over here.
2544 continue;
2545 break;
2546 case llvm::Triple::mips:
2547 case llvm::Triple::mipsel:
2548 case llvm::Triple::mips64:
2549 case llvm::Triple::mips64el:
2550 if (Value == "--trap") {
2551 CmdArgs.push_back("-target-feature");
2552 CmdArgs.push_back("+use-tcc-in-div");
2553 continue;
2554 }
2555 if (Value == "--break") {
2556 CmdArgs.push_back("-target-feature");
2557 CmdArgs.push_back("-use-tcc-in-div");
2558 continue;
2559 }
2560 if (Value.starts_with("-msoft-float")) {
2561 CmdArgs.push_back("-target-feature");
2562 CmdArgs.push_back("+soft-float");
2563 continue;
2564 }
2565 if (Value.starts_with("-mhard-float")) {
2566 CmdArgs.push_back("-target-feature");
2567 CmdArgs.push_back("-soft-float");
2568 continue;
2569 }
2570
2571 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2572 .Case("-mips1", "+mips1")
2573 .Case("-mips2", "+mips2")
2574 .Case("-mips3", "+mips3")
2575 .Case("-mips4", "+mips4")
2576 .Case("-mips5", "+mips5")
2577 .Case("-mips32", "+mips32")
2578 .Case("-mips32r2", "+mips32r2")
2579 .Case("-mips32r3", "+mips32r3")
2580 .Case("-mips32r5", "+mips32r5")
2581 .Case("-mips32r6", "+mips32r6")
2582 .Case("-mips64", "+mips64")
2583 .Case("-mips64r2", "+mips64r2")
2584 .Case("-mips64r3", "+mips64r3")
2585 .Case("-mips64r5", "+mips64r5")
2586 .Case("-mips64r6", "+mips64r6")
2587 .Default(nullptr);
2588 if (MipsTargetFeature)
2589 continue;
2590 }
2591
2592 if (Value == "-force_cpusubtype_ALL") {
2593 // Do nothing, this is the default and we don't support anything else.
2594 } else if (Value == "-L") {
2595 CmdArgs.push_back("-msave-temp-labels");
2596 } else if (Value == "--fatal-warnings") {
2597 CmdArgs.push_back("-massembler-fatal-warnings");
2598 } else if (Value == "--no-warn" || Value == "-W") {
2599 CmdArgs.push_back("-massembler-no-warn");
2600 } else if (Value == "--noexecstack") {
2601 UseNoExecStack = true;
2602 } else if (Value.starts_with("-compress-debug-sections") ||
2603 Value.starts_with("--compress-debug-sections") ||
2604 Value == "-nocompress-debug-sections" ||
2605 Value == "--nocompress-debug-sections") {
2606 CmdArgs.push_back(Value.data());
2607 } else if (Value == "-mrelax-relocations=yes" ||
2608 Value == "--mrelax-relocations=yes") {
2609 UseRelaxRelocations = true;
2610 } else if (Value == "-mrelax-relocations=no" ||
2611 Value == "--mrelax-relocations=no") {
2612 UseRelaxRelocations = false;
2613 } else if (Value.starts_with("-I")) {
2614 CmdArgs.push_back(Value.data());
2615 // We need to consume the next argument if the current arg is a plain
2616 // -I. The next arg will be the include directory.
2617 if (Value == "-I")
2618 TakeNextArg = true;
2619 } else if (Value.starts_with("-gdwarf-")) {
2620 // "-gdwarf-N" options are not cc1as options.
2621 unsigned DwarfVersion = DwarfVersionNum(Value);
2622 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2623 CmdArgs.push_back(Value.data());
2624 } else {
2625 RenderDebugEnablingArgs(Args, CmdArgs,
2626 llvm::codegenoptions::DebugInfoConstructor,
2627 DwarfVersion, llvm::DebuggerKind::Default);
2628 }
2629 } else if (Value.starts_with("-mcpu") || Value.starts_with("-mfpu") ||
2630 Value.starts_with("-mhwdiv") || Value.starts_with("-march")) {
2631 // Do nothing, we'll validate it later.
2632 } else if (Value == "-defsym") {
2633 if (A->getNumValues() != 2) {
2634 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2635 break;
2636 }
2637 const char *S = A->getValue(1);
2638 auto Pair = StringRef(S).split('=');
2639 auto Sym = Pair.first;
2640 auto SVal = Pair.second;
2641
2642 if (Sym.empty() || SVal.empty()) {
2643 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2644 break;
2645 }
2646 int64_t IVal;
2647 if (SVal.getAsInteger(0, IVal)) {
2648 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2649 break;
2650 }
2651 CmdArgs.push_back(Value.data());
2652 TakeNextArg = true;
2653 } else if (Value == "-fdebug-compilation-dir") {
2654 CmdArgs.push_back("-fdebug-compilation-dir");
2655 TakeNextArg = true;
2656 } else if (Value.consume_front("-fdebug-compilation-dir=")) {
2657 // The flag is a -Wa / -Xassembler argument and Options doesn't
2658 // parse the argument, so this isn't automatically aliased to
2659 // -fdebug-compilation-dir (without '=') here.
2660 CmdArgs.push_back("-fdebug-compilation-dir");
2661 CmdArgs.push_back(Value.data());
2662 } else if (Value == "--version") {
2663 D.PrintVersion(C, llvm::outs());
2664 } else {
2665 D.Diag(diag::err_drv_unsupported_option_argument)
2666 << A->getSpelling() << Value;
2667 }
2668 }
2669 }
2670 if (ImplicitIt.size())
2671 AddARMImplicitITArgs(Args, CmdArgs, ImplicitIt);
2672 if (!UseRelaxRelocations)
2673 CmdArgs.push_back("-mrelax-relocations=no");
2674 if (UseNoExecStack)
2675 CmdArgs.push_back("-mnoexecstack");
2676 if (MipsTargetFeature != nullptr) {
2677 CmdArgs.push_back("-target-feature");
2678 CmdArgs.push_back(MipsTargetFeature);
2679 }
2680
2681 // forward -fembed-bitcode to assmebler
2682 if (C.getDriver().embedBitcodeEnabled() ||
2683 C.getDriver().embedBitcodeMarkerOnly())
2684 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2685
2686 if (const char *AsSecureLogFile = getenv("AS_SECURE_LOG_FILE")) {
2687 CmdArgs.push_back("-as-secure-log-file");
2688 CmdArgs.push_back(Args.MakeArgString(AsSecureLogFile));
2689 }
2690 }
2691
EnumComplexRangeToStr(LangOptions::ComplexRangeKind Range)2692 static StringRef EnumComplexRangeToStr(LangOptions::ComplexRangeKind Range) {
2693 StringRef RangeStr = "";
2694 switch (Range) {
2695 case LangOptions::ComplexRangeKind::CX_Limited:
2696 return "-fcx-limited-range";
2697 break;
2698 case LangOptions::ComplexRangeKind::CX_Fortran:
2699 return "-fcx-fortran-rules";
2700 break;
2701 default:
2702 return RangeStr;
2703 break;
2704 }
2705 }
2706
EmitComplexRangeDiag(const Driver & D,LangOptions::ComplexRangeKind Range1,LangOptions::ComplexRangeKind Range2)2707 static void EmitComplexRangeDiag(const Driver &D,
2708 LangOptions::ComplexRangeKind Range1,
2709 LangOptions::ComplexRangeKind Range2) {
2710 if (Range1 != LangOptions::ComplexRangeKind::CX_Full)
2711 D.Diag(clang::diag::warn_drv_overriding_option)
2712 << EnumComplexRangeToStr(Range1) << EnumComplexRangeToStr(Range2);
2713 }
2714
2715 static std::string
RenderComplexRangeOption(LangOptions::ComplexRangeKind Range)2716 RenderComplexRangeOption(LangOptions::ComplexRangeKind Range) {
2717 std::string ComplexRangeStr = "-complex-range=";
2718 switch (Range) {
2719 case LangOptions::ComplexRangeKind::CX_Full:
2720 ComplexRangeStr += "full";
2721 break;
2722 case LangOptions::ComplexRangeKind::CX_Limited:
2723 ComplexRangeStr += "limited";
2724 break;
2725 case LangOptions::ComplexRangeKind::CX_Fortran:
2726 ComplexRangeStr += "fortran";
2727 break;
2728 default:
2729 assert(0 && "Unexpected range option");
2730 }
2731 return ComplexRangeStr;
2732 }
2733
RenderFloatingPointOptions(const ToolChain & TC,const Driver & D,bool OFastEnabled,const ArgList & Args,ArgStringList & CmdArgs,const JobAction & JA)2734 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2735 bool OFastEnabled, const ArgList &Args,
2736 ArgStringList &CmdArgs,
2737 const JobAction &JA) {
2738 // Handle various floating point optimization flags, mapping them to the
2739 // appropriate LLVM code generation flags. This is complicated by several
2740 // "umbrella" flags, so we do this by stepping through the flags incrementally
2741 // adjusting what we think is enabled/disabled, then at the end setting the
2742 // LLVM flags based on the final state.
2743 bool HonorINFs = true;
2744 bool HonorNaNs = true;
2745 bool ApproxFunc = false;
2746 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2747 bool MathErrno = TC.IsMathErrnoDefault();
2748 bool AssociativeMath = false;
2749 bool ReciprocalMath = false;
2750 bool SignedZeros = true;
2751 bool TrappingMath = false; // Implemented via -ffp-exception-behavior
2752 bool TrappingMathPresent = false; // Is trapping-math in args, and not
2753 // overriden by ffp-exception-behavior?
2754 bool RoundingFPMath = false;
2755 bool RoundingMathPresent = false; // Is rounding-math in args?
2756 // -ffp-model values: strict, fast, precise
2757 StringRef FPModel = "";
2758 // -ffp-exception-behavior options: strict, maytrap, ignore
2759 StringRef FPExceptionBehavior = "";
2760 // -ffp-eval-method options: double, extended, source
2761 StringRef FPEvalMethod = "";
2762 const llvm::DenormalMode DefaultDenormalFPMath =
2763 TC.getDefaultDenormalModeForType(Args, JA);
2764 const llvm::DenormalMode DefaultDenormalFP32Math =
2765 TC.getDefaultDenormalModeForType(Args, JA, &llvm::APFloat::IEEEsingle());
2766
2767 llvm::DenormalMode DenormalFPMath = DefaultDenormalFPMath;
2768 llvm::DenormalMode DenormalFP32Math = DefaultDenormalFP32Math;
2769 // CUDA and HIP don't rely on the frontend to pass an ffp-contract option.
2770 // If one wasn't given by the user, don't pass it here.
2771 StringRef FPContract;
2772 StringRef LastSeenFfpContractOption;
2773 bool SeenUnsafeMathModeOption = false;
2774 if (!JA.isDeviceOffloading(Action::OFK_Cuda) &&
2775 !JA.isOffloading(Action::OFK_HIP))
2776 FPContract = "on";
2777 bool StrictFPModel = false;
2778 StringRef Float16ExcessPrecision = "";
2779 StringRef BFloat16ExcessPrecision = "";
2780 LangOptions::ComplexRangeKind Range = LangOptions::ComplexRangeKind::CX_None;
2781 std::string ComplexRangeStr = "";
2782
2783 if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2784 CmdArgs.push_back("-mlimit-float-precision");
2785 CmdArgs.push_back(A->getValue());
2786 }
2787
2788 for (const Arg *A : Args) {
2789 auto optID = A->getOption().getID();
2790 bool PreciseFPModel = false;
2791 switch (optID) {
2792 default:
2793 break;
2794 case options::OPT_fcx_limited_range: {
2795 EmitComplexRangeDiag(D, Range, LangOptions::ComplexRangeKind::CX_Limited);
2796 Range = LangOptions::ComplexRangeKind::CX_Limited;
2797 break;
2798 }
2799 case options::OPT_fno_cx_limited_range:
2800 EmitComplexRangeDiag(D, Range, LangOptions::ComplexRangeKind::CX_Full);
2801 Range = LangOptions::ComplexRangeKind::CX_Full;
2802 break;
2803 case options::OPT_fcx_fortran_rules: {
2804 EmitComplexRangeDiag(D, Range, LangOptions::ComplexRangeKind::CX_Fortran);
2805 Range = LangOptions::ComplexRangeKind::CX_Fortran;
2806 break;
2807 }
2808 case options::OPT_fno_cx_fortran_rules:
2809 EmitComplexRangeDiag(D, Range, LangOptions::ComplexRangeKind::CX_Full);
2810 Range = LangOptions::ComplexRangeKind::CX_Full;
2811 break;
2812 case options::OPT_ffp_model_EQ: {
2813 // If -ffp-model= is seen, reset to fno-fast-math
2814 HonorINFs = true;
2815 HonorNaNs = true;
2816 ApproxFunc = false;
2817 // Turning *off* -ffast-math restores the toolchain default.
2818 MathErrno = TC.IsMathErrnoDefault();
2819 AssociativeMath = false;
2820 ReciprocalMath = false;
2821 SignedZeros = true;
2822 // -fno_fast_math restores default denormal and fpcontract handling
2823 FPContract = "on";
2824 DenormalFPMath = llvm::DenormalMode::getIEEE();
2825
2826 // FIXME: The target may have picked a non-IEEE default mode here based on
2827 // -cl-denorms-are-zero. Should the target consider -fp-model interaction?
2828 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2829
2830 StringRef Val = A->getValue();
2831 if (OFastEnabled && !Val.equals("fast")) {
2832 // Only -ffp-model=fast is compatible with OFast, ignore.
2833 D.Diag(clang::diag::warn_drv_overriding_option)
2834 << Args.MakeArgString("-ffp-model=" + Val) << "-Ofast";
2835 break;
2836 }
2837 StrictFPModel = false;
2838 PreciseFPModel = true;
2839 // ffp-model= is a Driver option, it is entirely rewritten into more
2840 // granular options before being passed into cc1.
2841 // Use the gcc option in the switch below.
2842 if (!FPModel.empty() && !FPModel.equals(Val))
2843 D.Diag(clang::diag::warn_drv_overriding_option)
2844 << Args.MakeArgString("-ffp-model=" + FPModel)
2845 << Args.MakeArgString("-ffp-model=" + Val);
2846 if (Val.equals("fast")) {
2847 optID = options::OPT_ffast_math;
2848 FPModel = Val;
2849 FPContract = "fast";
2850 } else if (Val.equals("precise")) {
2851 optID = options::OPT_ffp_contract;
2852 FPModel = Val;
2853 FPContract = "on";
2854 PreciseFPModel = true;
2855 } else if (Val.equals("strict")) {
2856 StrictFPModel = true;
2857 optID = options::OPT_frounding_math;
2858 FPExceptionBehavior = "strict";
2859 FPModel = Val;
2860 FPContract = "off";
2861 TrappingMath = true;
2862 } else
2863 D.Diag(diag::err_drv_unsupported_option_argument)
2864 << A->getSpelling() << Val;
2865 break;
2866 }
2867 }
2868
2869 switch (optID) {
2870 // If this isn't an FP option skip the claim below
2871 default: continue;
2872
2873 // Options controlling individual features
2874 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2875 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2876 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2877 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2878 case options::OPT_fapprox_func: ApproxFunc = true; break;
2879 case options::OPT_fno_approx_func: ApproxFunc = false; break;
2880 case options::OPT_fmath_errno: MathErrno = true; break;
2881 case options::OPT_fno_math_errno: MathErrno = false; break;
2882 case options::OPT_fassociative_math: AssociativeMath = true; break;
2883 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2884 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2885 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2886 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2887 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2888 case options::OPT_ftrapping_math:
2889 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2890 !FPExceptionBehavior.equals("strict"))
2891 // Warn that previous value of option is overridden.
2892 D.Diag(clang::diag::warn_drv_overriding_option)
2893 << Args.MakeArgString("-ffp-exception-behavior=" +
2894 FPExceptionBehavior)
2895 << "-ftrapping-math";
2896 TrappingMath = true;
2897 TrappingMathPresent = true;
2898 FPExceptionBehavior = "strict";
2899 break;
2900 case options::OPT_fno_trapping_math:
2901 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2902 !FPExceptionBehavior.equals("ignore"))
2903 // Warn that previous value of option is overridden.
2904 D.Diag(clang::diag::warn_drv_overriding_option)
2905 << Args.MakeArgString("-ffp-exception-behavior=" +
2906 FPExceptionBehavior)
2907 << "-fno-trapping-math";
2908 TrappingMath = false;
2909 TrappingMathPresent = true;
2910 FPExceptionBehavior = "ignore";
2911 break;
2912
2913 case options::OPT_frounding_math:
2914 RoundingFPMath = true;
2915 RoundingMathPresent = true;
2916 break;
2917
2918 case options::OPT_fno_rounding_math:
2919 RoundingFPMath = false;
2920 RoundingMathPresent = false;
2921 break;
2922
2923 case options::OPT_fdenormal_fp_math_EQ:
2924 DenormalFPMath = llvm::parseDenormalFPAttribute(A->getValue());
2925 DenormalFP32Math = DenormalFPMath;
2926 if (!DenormalFPMath.isValid()) {
2927 D.Diag(diag::err_drv_invalid_value)
2928 << A->getAsString(Args) << A->getValue();
2929 }
2930 break;
2931
2932 case options::OPT_fdenormal_fp_math_f32_EQ:
2933 DenormalFP32Math = llvm::parseDenormalFPAttribute(A->getValue());
2934 if (!DenormalFP32Math.isValid()) {
2935 D.Diag(diag::err_drv_invalid_value)
2936 << A->getAsString(Args) << A->getValue();
2937 }
2938 break;
2939
2940 // Validate and pass through -ffp-contract option.
2941 case options::OPT_ffp_contract: {
2942 StringRef Val = A->getValue();
2943 if (PreciseFPModel) {
2944 // -ffp-model=precise enables ffp-contract=on.
2945 // -ffp-model=precise sets PreciseFPModel to on and Val to
2946 // "precise". FPContract is set.
2947 ;
2948 } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off") ||
2949 Val.equals("fast-honor-pragmas")) {
2950 FPContract = Val;
2951 LastSeenFfpContractOption = Val;
2952 } else
2953 D.Diag(diag::err_drv_unsupported_option_argument)
2954 << A->getSpelling() << Val;
2955 break;
2956 }
2957
2958 // Validate and pass through -ffp-model option.
2959 case options::OPT_ffp_model_EQ:
2960 // This should only occur in the error case
2961 // since the optID has been replaced by a more granular
2962 // floating point option.
2963 break;
2964
2965 // Validate and pass through -ffp-exception-behavior option.
2966 case options::OPT_ffp_exception_behavior_EQ: {
2967 StringRef Val = A->getValue();
2968 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2969 !FPExceptionBehavior.equals(Val))
2970 // Warn that previous value of option is overridden.
2971 D.Diag(clang::diag::warn_drv_overriding_option)
2972 << Args.MakeArgString("-ffp-exception-behavior=" +
2973 FPExceptionBehavior)
2974 << Args.MakeArgString("-ffp-exception-behavior=" + Val);
2975 TrappingMath = TrappingMathPresent = false;
2976 if (Val.equals("ignore") || Val.equals("maytrap"))
2977 FPExceptionBehavior = Val;
2978 else if (Val.equals("strict")) {
2979 FPExceptionBehavior = Val;
2980 TrappingMath = TrappingMathPresent = true;
2981 } else
2982 D.Diag(diag::err_drv_unsupported_option_argument)
2983 << A->getSpelling() << Val;
2984 break;
2985 }
2986
2987 // Validate and pass through -ffp-eval-method option.
2988 case options::OPT_ffp_eval_method_EQ: {
2989 StringRef Val = A->getValue();
2990 if (Val.equals("double") || Val.equals("extended") ||
2991 Val.equals("source"))
2992 FPEvalMethod = Val;
2993 else
2994 D.Diag(diag::err_drv_unsupported_option_argument)
2995 << A->getSpelling() << Val;
2996 break;
2997 }
2998
2999 case options::OPT_fexcess_precision_EQ: {
3000 StringRef Val = A->getValue();
3001 const llvm::Triple::ArchType Arch = TC.getArch();
3002 if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
3003 if (Val.equals("standard") || Val.equals("fast"))
3004 Float16ExcessPrecision = Val;
3005 // To make it GCC compatible, allow the value of "16" which
3006 // means disable excess precision, the same meaning than clang's
3007 // equivalent value "none".
3008 else if (Val.equals("16"))
3009 Float16ExcessPrecision = "none";
3010 else
3011 D.Diag(diag::err_drv_unsupported_option_argument)
3012 << A->getSpelling() << Val;
3013 } else {
3014 if (!(Val.equals("standard") || Val.equals("fast")))
3015 D.Diag(diag::err_drv_unsupported_option_argument)
3016 << A->getSpelling() << Val;
3017 }
3018 BFloat16ExcessPrecision = Float16ExcessPrecision;
3019 break;
3020 }
3021 case options::OPT_ffinite_math_only:
3022 HonorINFs = false;
3023 HonorNaNs = false;
3024 break;
3025 case options::OPT_fno_finite_math_only:
3026 HonorINFs = true;
3027 HonorNaNs = true;
3028 break;
3029
3030 case options::OPT_funsafe_math_optimizations:
3031 AssociativeMath = true;
3032 ReciprocalMath = true;
3033 SignedZeros = false;
3034 ApproxFunc = true;
3035 TrappingMath = false;
3036 FPExceptionBehavior = "";
3037 FPContract = "fast";
3038 SeenUnsafeMathModeOption = true;
3039 break;
3040 case options::OPT_fno_unsafe_math_optimizations:
3041 AssociativeMath = false;
3042 ReciprocalMath = false;
3043 SignedZeros = true;
3044 ApproxFunc = false;
3045 TrappingMath = true;
3046 FPExceptionBehavior = "strict";
3047
3048 // The target may have opted to flush by default, so force IEEE.
3049 DenormalFPMath = llvm::DenormalMode::getIEEE();
3050 DenormalFP32Math = llvm::DenormalMode::getIEEE();
3051 if (!JA.isDeviceOffloading(Action::OFK_Cuda) &&
3052 !JA.isOffloading(Action::OFK_HIP)) {
3053 if (LastSeenFfpContractOption != "") {
3054 FPContract = LastSeenFfpContractOption;
3055 } else if (SeenUnsafeMathModeOption)
3056 FPContract = "on";
3057 }
3058 break;
3059
3060 case options::OPT_Ofast:
3061 // If -Ofast is the optimization level, then -ffast-math should be enabled
3062 if (!OFastEnabled)
3063 continue;
3064 [[fallthrough]];
3065 case options::OPT_ffast_math: {
3066 HonorINFs = false;
3067 HonorNaNs = false;
3068 MathErrno = false;
3069 AssociativeMath = true;
3070 ReciprocalMath = true;
3071 ApproxFunc = true;
3072 SignedZeros = false;
3073 TrappingMath = false;
3074 RoundingFPMath = false;
3075 FPExceptionBehavior = "";
3076 // If fast-math is set then set the fp-contract mode to fast.
3077 FPContract = "fast";
3078 SeenUnsafeMathModeOption = true;
3079 // ffast-math enables fortran rules for complex multiplication and
3080 // division.
3081 Range = LangOptions::ComplexRangeKind::CX_Limited;
3082 break;
3083 }
3084 case options::OPT_fno_fast_math:
3085 HonorINFs = true;
3086 HonorNaNs = true;
3087 // Turning on -ffast-math (with either flag) removes the need for
3088 // MathErrno. However, turning *off* -ffast-math merely restores the
3089 // toolchain default (which may be false).
3090 MathErrno = TC.IsMathErrnoDefault();
3091 AssociativeMath = false;
3092 ReciprocalMath = false;
3093 ApproxFunc = false;
3094 SignedZeros = true;
3095 // -fno_fast_math restores default denormal and fpcontract handling
3096 DenormalFPMath = DefaultDenormalFPMath;
3097 DenormalFP32Math = llvm::DenormalMode::getIEEE();
3098 if (!JA.isDeviceOffloading(Action::OFK_Cuda) &&
3099 !JA.isOffloading(Action::OFK_HIP)) {
3100 if (LastSeenFfpContractOption != "") {
3101 FPContract = LastSeenFfpContractOption;
3102 } else if (SeenUnsafeMathModeOption)
3103 FPContract = "on";
3104 }
3105 break;
3106 }
3107 if (StrictFPModel) {
3108 // If -ffp-model=strict has been specified on command line but
3109 // subsequent options conflict then emit warning diagnostic.
3110 if (HonorINFs && HonorNaNs && !AssociativeMath && !ReciprocalMath &&
3111 SignedZeros && TrappingMath && RoundingFPMath && !ApproxFunc &&
3112 DenormalFPMath == llvm::DenormalMode::getIEEE() &&
3113 DenormalFP32Math == llvm::DenormalMode::getIEEE() &&
3114 FPContract.equals("off"))
3115 // OK: Current Arg doesn't conflict with -ffp-model=strict
3116 ;
3117 else {
3118 StrictFPModel = false;
3119 FPModel = "";
3120 auto RHS = (A->getNumValues() == 0)
3121 ? A->getSpelling()
3122 : Args.MakeArgString(A->getSpelling() + A->getValue());
3123 if (RHS != "-ffp-model=strict")
3124 D.Diag(clang::diag::warn_drv_overriding_option)
3125 << "-ffp-model=strict" << RHS;
3126 }
3127 }
3128
3129 // If we handled this option claim it
3130 A->claim();
3131 }
3132
3133 if (!HonorINFs)
3134 CmdArgs.push_back("-menable-no-infs");
3135
3136 if (!HonorNaNs)
3137 CmdArgs.push_back("-menable-no-nans");
3138
3139 if (ApproxFunc)
3140 CmdArgs.push_back("-fapprox-func");
3141
3142 if (MathErrno)
3143 CmdArgs.push_back("-fmath-errno");
3144
3145 if (AssociativeMath && ReciprocalMath && !SignedZeros && ApproxFunc &&
3146 !TrappingMath)
3147 CmdArgs.push_back("-funsafe-math-optimizations");
3148
3149 if (!SignedZeros)
3150 CmdArgs.push_back("-fno-signed-zeros");
3151
3152 if (AssociativeMath && !SignedZeros && !TrappingMath)
3153 CmdArgs.push_back("-mreassociate");
3154
3155 if (ReciprocalMath)
3156 CmdArgs.push_back("-freciprocal-math");
3157
3158 if (TrappingMath) {
3159 // FP Exception Behavior is also set to strict
3160 assert(FPExceptionBehavior.equals("strict"));
3161 }
3162
3163 // The default is IEEE.
3164 if (DenormalFPMath != llvm::DenormalMode::getIEEE()) {
3165 llvm::SmallString<64> DenormFlag;
3166 llvm::raw_svector_ostream ArgStr(DenormFlag);
3167 ArgStr << "-fdenormal-fp-math=" << DenormalFPMath;
3168 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));
3169 }
3170
3171 // Add f32 specific denormal mode flag if it's different.
3172 if (DenormalFP32Math != DenormalFPMath) {
3173 llvm::SmallString<64> DenormFlag;
3174 llvm::raw_svector_ostream ArgStr(DenormFlag);
3175 ArgStr << "-fdenormal-fp-math-f32=" << DenormalFP32Math;
3176 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));
3177 }
3178
3179 if (!FPContract.empty())
3180 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
3181
3182 if (!RoundingFPMath)
3183 CmdArgs.push_back(Args.MakeArgString("-fno-rounding-math"));
3184
3185 if (RoundingFPMath && RoundingMathPresent)
3186 CmdArgs.push_back(Args.MakeArgString("-frounding-math"));
3187
3188 if (!FPExceptionBehavior.empty())
3189 CmdArgs.push_back(Args.MakeArgString("-ffp-exception-behavior=" +
3190 FPExceptionBehavior));
3191
3192 if (!FPEvalMethod.empty())
3193 CmdArgs.push_back(Args.MakeArgString("-ffp-eval-method=" + FPEvalMethod));
3194
3195 if (!Float16ExcessPrecision.empty())
3196 CmdArgs.push_back(Args.MakeArgString("-ffloat16-excess-precision=" +
3197 Float16ExcessPrecision));
3198 if (!BFloat16ExcessPrecision.empty())
3199 CmdArgs.push_back(Args.MakeArgString("-fbfloat16-excess-precision=" +
3200 BFloat16ExcessPrecision));
3201
3202 ParseMRecip(D, Args, CmdArgs);
3203
3204 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
3205 // individual features enabled by -ffast-math instead of the option itself as
3206 // that's consistent with gcc's behaviour.
3207 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath && ApproxFunc &&
3208 ReciprocalMath && !SignedZeros && !TrappingMath && !RoundingFPMath) {
3209 CmdArgs.push_back("-ffast-math");
3210 if (FPModel.equals("fast")) {
3211 if (FPContract.equals("fast"))
3212 // All set, do nothing.
3213 ;
3214 else if (FPContract.empty())
3215 // Enable -ffp-contract=fast
3216 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=fast"));
3217 else
3218 D.Diag(clang::diag::warn_drv_overriding_option)
3219 << "-ffp-model=fast"
3220 << Args.MakeArgString("-ffp-contract=" + FPContract);
3221 }
3222 }
3223
3224 // Handle __FINITE_MATH_ONLY__ similarly.
3225 if (!HonorINFs && !HonorNaNs)
3226 CmdArgs.push_back("-ffinite-math-only");
3227
3228 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
3229 CmdArgs.push_back("-mfpmath");
3230 CmdArgs.push_back(A->getValue());
3231 }
3232
3233 // Disable a codegen optimization for floating-point casts.
3234 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
3235 options::OPT_fstrict_float_cast_overflow, false))
3236 CmdArgs.push_back("-fno-strict-float-cast-overflow");
3237
3238 if (Range != LangOptions::ComplexRangeKind::CX_None)
3239 ComplexRangeStr = RenderComplexRangeOption(Range);
3240 if (!ComplexRangeStr.empty())
3241 CmdArgs.push_back(Args.MakeArgString(ComplexRangeStr));
3242 if (Args.hasArg(options::OPT_fcx_limited_range))
3243 CmdArgs.push_back("-fcx-limited-range");
3244 if (Args.hasArg(options::OPT_fcx_fortran_rules))
3245 CmdArgs.push_back("-fcx-fortran-rules");
3246 if (Args.hasArg(options::OPT_fno_cx_limited_range))
3247 CmdArgs.push_back("-fno-cx-limited-range");
3248 if (Args.hasArg(options::OPT_fno_cx_fortran_rules))
3249 CmdArgs.push_back("-fno-cx-fortran-rules");
3250 }
3251
RenderAnalyzerOptions(const ArgList & Args,ArgStringList & CmdArgs,const llvm::Triple & Triple,const InputInfo & Input)3252 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
3253 const llvm::Triple &Triple,
3254 const InputInfo &Input) {
3255 // Add default argument set.
3256 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
3257 CmdArgs.push_back("-analyzer-checker=core");
3258 CmdArgs.push_back("-analyzer-checker=apiModeling");
3259
3260 if (!Triple.isWindowsMSVCEnvironment()) {
3261 CmdArgs.push_back("-analyzer-checker=unix");
3262 } else {
3263 // Enable "unix" checkers that also work on Windows.
3264 CmdArgs.push_back("-analyzer-checker=unix.API");
3265 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
3266 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
3267 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
3268 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
3269 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
3270 }
3271
3272 // Disable some unix checkers for PS4/PS5.
3273 if (Triple.isPS()) {
3274 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
3275 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
3276 }
3277
3278 if (Triple.isOSDarwin()) {
3279 CmdArgs.push_back("-analyzer-checker=osx");
3280 CmdArgs.push_back(
3281 "-analyzer-checker=security.insecureAPI.decodeValueOfObjCType");
3282 }
3283 else if (Triple.isOSFuchsia())
3284 CmdArgs.push_back("-analyzer-checker=fuchsia");
3285
3286 CmdArgs.push_back("-analyzer-checker=deadcode");
3287
3288 if (types::isCXX(Input.getType()))
3289 CmdArgs.push_back("-analyzer-checker=cplusplus");
3290
3291 if (!Triple.isPS()) {
3292 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
3293 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
3294 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
3295 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
3296 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
3297 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
3298 }
3299
3300 // Default nullability checks.
3301 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
3302 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
3303 }
3304
3305 // Set the output format. The default is plist, for (lame) historical reasons.
3306 CmdArgs.push_back("-analyzer-output");
3307 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
3308 CmdArgs.push_back(A->getValue());
3309 else
3310 CmdArgs.push_back("plist");
3311
3312 // Disable the presentation of standard compiler warnings when using
3313 // --analyze. We only want to show static analyzer diagnostics or frontend
3314 // errors.
3315 CmdArgs.push_back("-w");
3316
3317 // Add -Xanalyzer arguments when running as analyzer.
3318 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
3319 }
3320
isValidSymbolName(StringRef S)3321 static bool isValidSymbolName(StringRef S) {
3322 if (S.empty())
3323 return false;
3324
3325 if (std::isdigit(S[0]))
3326 return false;
3327
3328 return llvm::all_of(S, [](char C) { return std::isalnum(C) || C == '_'; });
3329 }
3330
RenderSSPOptions(const Driver & D,const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs,bool KernelOrKext)3331 static void RenderSSPOptions(const Driver &D, const ToolChain &TC,
3332 const ArgList &Args, ArgStringList &CmdArgs,
3333 bool KernelOrKext) {
3334 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
3335
3336 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
3337 // doesn't even have a stack!
3338 if (EffectiveTriple.isNVPTX())
3339 return;
3340
3341 // -stack-protector=0 is default.
3342 LangOptions::StackProtectorMode StackProtectorLevel = LangOptions::SSPOff;
3343 LangOptions::StackProtectorMode DefaultStackProtectorLevel =
3344 TC.GetDefaultStackProtectorLevel(KernelOrKext);
3345
3346 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
3347 options::OPT_fstack_protector_all,
3348 options::OPT_fstack_protector_strong,
3349 options::OPT_fstack_protector)) {
3350 if (A->getOption().matches(options::OPT_fstack_protector))
3351 StackProtectorLevel =
3352 std::max<>(LangOptions::SSPOn, DefaultStackProtectorLevel);
3353 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
3354 StackProtectorLevel = LangOptions::SSPStrong;
3355 else if (A->getOption().matches(options::OPT_fstack_protector_all))
3356 StackProtectorLevel = LangOptions::SSPReq;
3357
3358 if (EffectiveTriple.isBPF() && StackProtectorLevel != LangOptions::SSPOff) {
3359 D.Diag(diag::warn_drv_unsupported_option_for_target)
3360 << A->getSpelling() << EffectiveTriple.getTriple();
3361 StackProtectorLevel = DefaultStackProtectorLevel;
3362 }
3363 } else {
3364 StackProtectorLevel = DefaultStackProtectorLevel;
3365 }
3366
3367 if (StackProtectorLevel) {
3368 CmdArgs.push_back("-stack-protector");
3369 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
3370 }
3371
3372 // --param ssp-buffer-size=
3373 for (const Arg *A : Args.filtered(options::OPT__param)) {
3374 StringRef Str(A->getValue());
3375 if (Str.starts_with("ssp-buffer-size=")) {
3376 if (StackProtectorLevel) {
3377 CmdArgs.push_back("-stack-protector-buffer-size");
3378 // FIXME: Verify the argument is a valid integer.
3379 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
3380 }
3381 A->claim();
3382 }
3383 }
3384
3385 const std::string &TripleStr = EffectiveTriple.getTriple();
3386 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_EQ)) {
3387 StringRef Value = A->getValue();
3388 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&
3389 !EffectiveTriple.isARM() && !EffectiveTriple.isThumb())
3390 D.Diag(diag::err_drv_unsupported_opt_for_target)
3391 << A->getAsString(Args) << TripleStr;
3392 if ((EffectiveTriple.isX86() || EffectiveTriple.isARM() ||
3393 EffectiveTriple.isThumb()) &&
3394 Value != "tls" && Value != "global") {
3395 D.Diag(diag::err_drv_invalid_value_with_suggestion)
3396 << A->getOption().getName() << Value << "tls global";
3397 return;
3398 }
3399 if ((EffectiveTriple.isARM() || EffectiveTriple.isThumb()) &&
3400 Value == "tls") {
3401 if (!Args.hasArg(options::OPT_mstack_protector_guard_offset_EQ)) {
3402 D.Diag(diag::err_drv_ssp_missing_offset_argument)
3403 << A->getAsString(Args);
3404 return;
3405 }
3406 // Check whether the target subarch supports the hardware TLS register
3407 if (!arm::isHardTPSupported(EffectiveTriple)) {
3408 D.Diag(diag::err_target_unsupported_tp_hard)
3409 << EffectiveTriple.getArchName();
3410 return;
3411 }
3412 // Check whether the user asked for something other than -mtp=cp15
3413 if (Arg *A = Args.getLastArg(options::OPT_mtp_mode_EQ)) {
3414 StringRef Value = A->getValue();
3415 if (Value != "cp15") {
3416 D.Diag(diag::err_drv_argument_not_allowed_with)
3417 << A->getAsString(Args) << "-mstack-protector-guard=tls";
3418 return;
3419 }
3420 }
3421 CmdArgs.push_back("-target-feature");
3422 CmdArgs.push_back("+read-tp-tpidruro");
3423 }
3424 if (EffectiveTriple.isAArch64() && Value != "sysreg" && Value != "global") {
3425 D.Diag(diag::err_drv_invalid_value_with_suggestion)
3426 << A->getOption().getName() << Value << "sysreg global";
3427 return;
3428 }
3429 A->render(Args, CmdArgs);
3430 }
3431
3432 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_offset_EQ)) {
3433 StringRef Value = A->getValue();
3434 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&
3435 !EffectiveTriple.isARM() && !EffectiveTriple.isThumb())
3436 D.Diag(diag::err_drv_unsupported_opt_for_target)
3437 << A->getAsString(Args) << TripleStr;
3438 int Offset;
3439 if (Value.getAsInteger(10, Offset)) {
3440 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
3441 return;
3442 }
3443 if ((EffectiveTriple.isARM() || EffectiveTriple.isThumb()) &&
3444 (Offset < 0 || Offset > 0xfffff)) {
3445 D.Diag(diag::err_drv_invalid_int_value)
3446 << A->getOption().getName() << Value;
3447 return;
3448 }
3449 A->render(Args, CmdArgs);
3450 }
3451
3452 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_reg_EQ)) {
3453 StringRef Value = A->getValue();
3454 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64())
3455 D.Diag(diag::err_drv_unsupported_opt_for_target)
3456 << A->getAsString(Args) << TripleStr;
3457 if (EffectiveTriple.isX86() && (Value != "fs" && Value != "gs")) {
3458 D.Diag(diag::err_drv_invalid_value_with_suggestion)
3459 << A->getOption().getName() << Value << "fs gs";
3460 return;
3461 }
3462 if (EffectiveTriple.isAArch64() && Value != "sp_el0") {
3463 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
3464 return;
3465 }
3466 A->render(Args, CmdArgs);
3467 }
3468
3469 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_symbol_EQ)) {
3470 StringRef Value = A->getValue();
3471 if (!isValidSymbolName(Value)) {
3472 D.Diag(diag::err_drv_argument_only_allowed_with)
3473 << A->getOption().getName() << "legal symbol name";
3474 return;
3475 }
3476 A->render(Args, CmdArgs);
3477 }
3478 }
3479
RenderSCPOptions(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)3480 static void RenderSCPOptions(const ToolChain &TC, const ArgList &Args,
3481 ArgStringList &CmdArgs) {
3482 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
3483
3484 if (!EffectiveTriple.isOSFreeBSD() && !EffectiveTriple.isOSLinux())
3485 return;
3486
3487 if (!EffectiveTriple.isX86() && !EffectiveTriple.isSystemZ() &&
3488 !EffectiveTriple.isPPC64() && !EffectiveTriple.isAArch64())
3489 return;
3490
3491 Args.addOptInFlag(CmdArgs, options::OPT_fstack_clash_protection,
3492 options::OPT_fno_stack_clash_protection);
3493 }
3494
RenderTrivialAutoVarInitOptions(const Driver & D,const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)3495 static void RenderTrivialAutoVarInitOptions(const Driver &D,
3496 const ToolChain &TC,
3497 const ArgList &Args,
3498 ArgStringList &CmdArgs) {
3499 auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
3500 StringRef TrivialAutoVarInit = "";
3501
3502 for (const Arg *A : Args) {
3503 switch (A->getOption().getID()) {
3504 default:
3505 continue;
3506 case options::OPT_ftrivial_auto_var_init: {
3507 A->claim();
3508 StringRef Val = A->getValue();
3509 if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
3510 TrivialAutoVarInit = Val;
3511 else
3512 D.Diag(diag::err_drv_unsupported_option_argument)
3513 << A->getSpelling() << Val;
3514 break;
3515 }
3516 }
3517 }
3518
3519 if (TrivialAutoVarInit.empty())
3520 switch (DefaultTrivialAutoVarInit) {
3521 case LangOptions::TrivialAutoVarInitKind::Uninitialized:
3522 break;
3523 case LangOptions::TrivialAutoVarInitKind::Pattern:
3524 TrivialAutoVarInit = "pattern";
3525 break;
3526 case LangOptions::TrivialAutoVarInitKind::Zero:
3527 TrivialAutoVarInit = "zero";
3528 break;
3529 }
3530
3531 if (!TrivialAutoVarInit.empty()) {
3532 CmdArgs.push_back(
3533 Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
3534 }
3535
3536 if (Arg *A =
3537 Args.getLastArg(options::OPT_ftrivial_auto_var_init_stop_after)) {
3538 if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||
3539 StringRef(
3540 Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==
3541 "uninitialized")
3542 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_missing_dependency);
3543 A->claim();
3544 StringRef Val = A->getValue();
3545 if (std::stoi(Val.str()) <= 0)
3546 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_invalid_value);
3547 CmdArgs.push_back(
3548 Args.MakeArgString("-ftrivial-auto-var-init-stop-after=" + Val));
3549 }
3550
3551 if (Arg *A = Args.getLastArg(options::OPT_ftrivial_auto_var_init_max_size)) {
3552 if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||
3553 StringRef(
3554 Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==
3555 "uninitialized")
3556 D.Diag(diag::err_drv_trivial_auto_var_init_max_size_missing_dependency);
3557 A->claim();
3558 StringRef Val = A->getValue();
3559 if (std::stoi(Val.str()) <= 0)
3560 D.Diag(diag::err_drv_trivial_auto_var_init_max_size_invalid_value);
3561 CmdArgs.push_back(
3562 Args.MakeArgString("-ftrivial-auto-var-init-max-size=" + Val));
3563 }
3564 }
3565
RenderOpenCLOptions(const ArgList & Args,ArgStringList & CmdArgs,types::ID InputType)3566 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs,
3567 types::ID InputType) {
3568 // cl-denorms-are-zero is not forwarded. It is translated into a generic flag
3569 // for denormal flushing handling based on the target.
3570 const unsigned ForwardedArguments[] = {
3571 options::OPT_cl_opt_disable,
3572 options::OPT_cl_strict_aliasing,
3573 options::OPT_cl_single_precision_constant,
3574 options::OPT_cl_finite_math_only,
3575 options::OPT_cl_kernel_arg_info,
3576 options::OPT_cl_unsafe_math_optimizations,
3577 options::OPT_cl_fast_relaxed_math,
3578 options::OPT_cl_mad_enable,
3579 options::OPT_cl_no_signed_zeros,
3580 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
3581 options::OPT_cl_uniform_work_group_size
3582 };
3583
3584 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
3585 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
3586 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
3587 } else if (Arg *A = Args.getLastArg(options::OPT_cl_ext_EQ)) {
3588 std::string CLExtStr = std::string("-cl-ext=") + A->getValue();
3589 CmdArgs.push_back(Args.MakeArgString(CLExtStr));
3590 }
3591
3592 for (const auto &Arg : ForwardedArguments)
3593 if (const auto *A = Args.getLastArg(Arg))
3594 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
3595
3596 // Only add the default headers if we are compiling OpenCL sources.
3597 if ((types::isOpenCL(InputType) ||
3598 (Args.hasArg(options::OPT_cl_std_EQ) && types::isSrcFile(InputType))) &&
3599 !Args.hasArg(options::OPT_cl_no_stdinc)) {
3600 CmdArgs.push_back("-finclude-default-header");
3601 CmdArgs.push_back("-fdeclare-opencl-builtins");
3602 }
3603 }
3604
RenderHLSLOptions(const ArgList & Args,ArgStringList & CmdArgs,types::ID InputType)3605 static void RenderHLSLOptions(const ArgList &Args, ArgStringList &CmdArgs,
3606 types::ID InputType) {
3607 const unsigned ForwardedArguments[] = {options::OPT_dxil_validator_version,
3608 options::OPT_D,
3609 options::OPT_I,
3610 options::OPT_S,
3611 options::OPT_O,
3612 options::OPT_emit_llvm,
3613 options::OPT_emit_obj,
3614 options::OPT_disable_llvm_passes,
3615 options::OPT_fnative_half_type,
3616 options::OPT_hlsl_entrypoint};
3617 if (!types::isHLSL(InputType))
3618 return;
3619 for (const auto &Arg : ForwardedArguments)
3620 if (const auto *A = Args.getLastArg(Arg))
3621 A->renderAsInput(Args, CmdArgs);
3622 // Add the default headers if dxc_no_stdinc is not set.
3623 if (!Args.hasArg(options::OPT_dxc_no_stdinc) &&
3624 !Args.hasArg(options::OPT_nostdinc))
3625 CmdArgs.push_back("-finclude-default-header");
3626 }
3627
RenderOpenACCOptions(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs,types::ID InputType)3628 static void RenderOpenACCOptions(const Driver &D, const ArgList &Args,
3629 ArgStringList &CmdArgs, types::ID InputType) {
3630 if (!Args.hasArg(options::OPT_fopenacc))
3631 return;
3632
3633 CmdArgs.push_back("-fopenacc");
3634
3635 if (Arg *A = Args.getLastArg(options::OPT_openacc_macro_override)) {
3636 StringRef Value = A->getValue();
3637 int Version;
3638 if (!Value.getAsInteger(10, Version))
3639 A->renderAsInput(Args, CmdArgs);
3640 else
3641 D.Diag(diag::err_drv_clang_unsupported) << Value;
3642 }
3643 }
3644
RenderARCMigrateToolOptions(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)3645 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
3646 ArgStringList &CmdArgs) {
3647 bool ARCMTEnabled = false;
3648 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
3649 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
3650 options::OPT_ccc_arcmt_modify,
3651 options::OPT_ccc_arcmt_migrate)) {
3652 ARCMTEnabled = true;
3653 switch (A->getOption().getID()) {
3654 default: llvm_unreachable("missed a case");
3655 case options::OPT_ccc_arcmt_check:
3656 CmdArgs.push_back("-arcmt-action=check");
3657 break;
3658 case options::OPT_ccc_arcmt_modify:
3659 CmdArgs.push_back("-arcmt-action=modify");
3660 break;
3661 case options::OPT_ccc_arcmt_migrate:
3662 CmdArgs.push_back("-arcmt-action=migrate");
3663 CmdArgs.push_back("-mt-migrate-directory");
3664 CmdArgs.push_back(A->getValue());
3665
3666 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
3667 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
3668 break;
3669 }
3670 }
3671 } else {
3672 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
3673 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
3674 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
3675 }
3676
3677 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
3678 if (ARCMTEnabled)
3679 D.Diag(diag::err_drv_argument_not_allowed_with)
3680 << A->getAsString(Args) << "-ccc-arcmt-migrate";
3681
3682 CmdArgs.push_back("-mt-migrate-directory");
3683 CmdArgs.push_back(A->getValue());
3684
3685 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
3686 options::OPT_objcmt_migrate_subscripting,
3687 options::OPT_objcmt_migrate_property)) {
3688 // None specified, means enable them all.
3689 CmdArgs.push_back("-objcmt-migrate-literals");
3690 CmdArgs.push_back("-objcmt-migrate-subscripting");
3691 CmdArgs.push_back("-objcmt-migrate-property");
3692 } else {
3693 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
3694 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
3695 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
3696 }
3697 } else {
3698 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
3699 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
3700 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
3701 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
3702 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
3703 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
3704 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
3705 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
3706 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
3707 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
3708 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
3709 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
3710 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
3711 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
3712 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
3713 Args.AddLastArg(CmdArgs, options::OPT_objcmt_allowlist_dir_path);
3714 }
3715 }
3716
RenderBuiltinOptions(const ToolChain & TC,const llvm::Triple & T,const ArgList & Args,ArgStringList & CmdArgs)3717 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
3718 const ArgList &Args, ArgStringList &CmdArgs) {
3719 // -fbuiltin is default unless -mkernel is used.
3720 bool UseBuiltins =
3721 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
3722 !Args.hasArg(options::OPT_mkernel));
3723 if (!UseBuiltins)
3724 CmdArgs.push_back("-fno-builtin");
3725
3726 // -ffreestanding implies -fno-builtin.
3727 if (Args.hasArg(options::OPT_ffreestanding))
3728 UseBuiltins = false;
3729
3730 // Process the -fno-builtin-* options.
3731 for (const Arg *A : Args.filtered(options::OPT_fno_builtin_)) {
3732 A->claim();
3733
3734 // If -fno-builtin is specified, then there's no need to pass the option to
3735 // the frontend.
3736 if (UseBuiltins)
3737 A->render(Args, CmdArgs);
3738 }
3739
3740 // le32-specific flags:
3741 // -fno-math-builtin: clang should not convert math builtins to intrinsics
3742 // by default.
3743 if (TC.getArch() == llvm::Triple::le32)
3744 CmdArgs.push_back("-fno-math-builtin");
3745 }
3746
getDefaultModuleCachePath(SmallVectorImpl<char> & Result)3747 bool Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
3748 if (const char *Str = std::getenv("CLANG_MODULE_CACHE_PATH")) {
3749 Twine Path{Str};
3750 Path.toVector(Result);
3751 return Path.getSingleStringRef() != "";
3752 }
3753 if (llvm::sys::path::cache_directory(Result)) {
3754 llvm::sys::path::append(Result, "clang");
3755 llvm::sys::path::append(Result, "ModuleCache");
3756 return true;
3757 }
3758 return false;
3759 }
3760
RenderModulesOptions(Compilation & C,const Driver & D,const ArgList & Args,const InputInfo & Input,const InputInfo & Output,bool HaveStd20,ArgStringList & CmdArgs)3761 static bool RenderModulesOptions(Compilation &C, const Driver &D,
3762 const ArgList &Args, const InputInfo &Input,
3763 const InputInfo &Output, bool HaveStd20,
3764 ArgStringList &CmdArgs) {
3765 bool IsCXX = types::isCXX(Input.getType());
3766 bool HaveStdCXXModules = IsCXX && HaveStd20;
3767 bool HaveModules = HaveStdCXXModules;
3768
3769 // -fmodules enables the use of precompiled modules (off by default).
3770 // Users can pass -fno-cxx-modules to turn off modules support for
3771 // C++/Objective-C++ programs.
3772 bool HaveClangModules = false;
3773 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
3774 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
3775 options::OPT_fno_cxx_modules, true);
3776 if (AllowedInCXX || !IsCXX) {
3777 CmdArgs.push_back("-fmodules");
3778 HaveClangModules = true;
3779 }
3780 }
3781
3782 HaveModules |= HaveClangModules;
3783
3784 // -fmodule-maps enables implicit reading of module map files. By default,
3785 // this is enabled if we are using Clang's flavor of precompiled modules.
3786 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
3787 options::OPT_fno_implicit_module_maps, HaveClangModules))
3788 CmdArgs.push_back("-fimplicit-module-maps");
3789
3790 // -fmodules-decluse checks that modules used are declared so (off by default)
3791 Args.addOptInFlag(CmdArgs, options::OPT_fmodules_decluse,
3792 options::OPT_fno_modules_decluse);
3793
3794 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
3795 // all #included headers are part of modules.
3796 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
3797 options::OPT_fno_modules_strict_decluse, false))
3798 CmdArgs.push_back("-fmodules-strict-decluse");
3799
3800 // -fno-implicit-modules turns off implicitly compiling modules on demand.
3801 bool ImplicitModules = false;
3802 if (!Args.hasFlag(options::OPT_fimplicit_modules,
3803 options::OPT_fno_implicit_modules, HaveClangModules)) {
3804 if (HaveModules)
3805 CmdArgs.push_back("-fno-implicit-modules");
3806 } else if (HaveModules) {
3807 ImplicitModules = true;
3808 // -fmodule-cache-path specifies where our implicitly-built module files
3809 // should be written.
3810 SmallString<128> Path;
3811 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
3812 Path = A->getValue();
3813
3814 bool HasPath = true;
3815 if (C.isForDiagnostics()) {
3816 // When generating crash reports, we want to emit the modules along with
3817 // the reproduction sources, so we ignore any provided module path.
3818 Path = Output.getFilename();
3819 llvm::sys::path::replace_extension(Path, ".cache");
3820 llvm::sys::path::append(Path, "modules");
3821 } else if (Path.empty()) {
3822 // No module path was provided: use the default.
3823 HasPath = Driver::getDefaultModuleCachePath(Path);
3824 }
3825
3826 // `HasPath` will only be false if getDefaultModuleCachePath() fails.
3827 // That being said, that failure is unlikely and not caching is harmless.
3828 if (HasPath) {
3829 const char Arg[] = "-fmodules-cache-path=";
3830 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
3831 CmdArgs.push_back(Args.MakeArgString(Path));
3832 }
3833 }
3834
3835 if (HaveModules) {
3836 if (Args.hasFlag(options::OPT_fprebuilt_implicit_modules,
3837 options::OPT_fno_prebuilt_implicit_modules, false))
3838 CmdArgs.push_back("-fprebuilt-implicit-modules");
3839 if (Args.hasFlag(options::OPT_fmodules_validate_input_files_content,
3840 options::OPT_fno_modules_validate_input_files_content,
3841 false))
3842 CmdArgs.push_back("-fvalidate-ast-input-files-content");
3843 }
3844
3845 // -fmodule-name specifies the module that is currently being built (or
3846 // used for header checking by -fmodule-maps).
3847 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
3848
3849 // -fmodule-map-file can be used to specify files containing module
3850 // definitions.
3851 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
3852
3853 // -fbuiltin-module-map can be used to load the clang
3854 // builtin headers modulemap file.
3855 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
3856 SmallString<128> BuiltinModuleMap(D.ResourceDir);
3857 llvm::sys::path::append(BuiltinModuleMap, "include");
3858 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
3859 if (llvm::sys::fs::exists(BuiltinModuleMap))
3860 CmdArgs.push_back(
3861 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
3862 }
3863
3864 // The -fmodule-file=<name>=<file> form specifies the mapping of module
3865 // names to precompiled module files (the module is loaded only if used).
3866 // The -fmodule-file=<file> form can be used to unconditionally load
3867 // precompiled module files (whether used or not).
3868 if (HaveModules || Input.getType() == clang::driver::types::TY_ModuleFile) {
3869 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
3870
3871 // -fprebuilt-module-path specifies where to load the prebuilt module files.
3872 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
3873 CmdArgs.push_back(Args.MakeArgString(
3874 std::string("-fprebuilt-module-path=") + A->getValue()));
3875 A->claim();
3876 }
3877 } else
3878 Args.ClaimAllArgs(options::OPT_fmodule_file);
3879
3880 // When building modules and generating crashdumps, we need to dump a module
3881 // dependency VFS alongside the output.
3882 if (HaveClangModules && C.isForDiagnostics()) {
3883 SmallString<128> VFSDir(Output.getFilename());
3884 llvm::sys::path::replace_extension(VFSDir, ".cache");
3885 // Add the cache directory as a temp so the crash diagnostics pick it up.
3886 C.addTempFile(Args.MakeArgString(VFSDir));
3887
3888 llvm::sys::path::append(VFSDir, "vfs");
3889 CmdArgs.push_back("-module-dependency-dir");
3890 CmdArgs.push_back(Args.MakeArgString(VFSDir));
3891 }
3892
3893 if (HaveClangModules)
3894 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
3895
3896 // Pass through all -fmodules-ignore-macro arguments.
3897 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
3898 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
3899 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
3900
3901 if (HaveClangModules) {
3902 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
3903
3904 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
3905 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
3906 D.Diag(diag::err_drv_argument_not_allowed_with)
3907 << A->getAsString(Args) << "-fbuild-session-timestamp";
3908
3909 llvm::sys::fs::file_status Status;
3910 if (llvm::sys::fs::status(A->getValue(), Status))
3911 D.Diag(diag::err_drv_no_such_file) << A->getValue();
3912 CmdArgs.push_back(Args.MakeArgString(
3913 "-fbuild-session-timestamp=" +
3914 Twine((uint64_t)std::chrono::duration_cast<std::chrono::seconds>(
3915 Status.getLastModificationTime().time_since_epoch())
3916 .count())));
3917 }
3918
3919 if (Args.getLastArg(
3920 options::OPT_fmodules_validate_once_per_build_session)) {
3921 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
3922 options::OPT_fbuild_session_file))
3923 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
3924
3925 Args.AddLastArg(CmdArgs,
3926 options::OPT_fmodules_validate_once_per_build_session);
3927 }
3928
3929 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
3930 options::OPT_fno_modules_validate_system_headers,
3931 ImplicitModules))
3932 CmdArgs.push_back("-fmodules-validate-system-headers");
3933
3934 Args.AddLastArg(CmdArgs,
3935 options::OPT_fmodules_disable_diagnostic_validation);
3936 } else {
3937 Args.ClaimAllArgs(options::OPT_fbuild_session_timestamp);
3938 Args.ClaimAllArgs(options::OPT_fbuild_session_file);
3939 Args.ClaimAllArgs(options::OPT_fmodules_validate_once_per_build_session);
3940 Args.ClaimAllArgs(options::OPT_fmodules_validate_system_headers);
3941 Args.ClaimAllArgs(options::OPT_fno_modules_validate_system_headers);
3942 Args.ClaimAllArgs(options::OPT_fmodules_disable_diagnostic_validation);
3943 }
3944
3945 // FIXME: We provisionally don't check ODR violations for decls in the global
3946 // module fragment.
3947 CmdArgs.push_back("-fskip-odr-check-in-gmf");
3948
3949 // Claim `-fmodule-output` and `-fmodule-output=` to avoid unused warnings.
3950 Args.ClaimAllArgs(options::OPT_fmodule_output);
3951 Args.ClaimAllArgs(options::OPT_fmodule_output_EQ);
3952
3953 return HaveModules;
3954 }
3955
RenderCharacterOptions(const ArgList & Args,const llvm::Triple & T,ArgStringList & CmdArgs)3956 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
3957 ArgStringList &CmdArgs) {
3958 // -fsigned-char is default.
3959 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
3960 options::OPT_fno_signed_char,
3961 options::OPT_funsigned_char,
3962 options::OPT_fno_unsigned_char)) {
3963 if (A->getOption().matches(options::OPT_funsigned_char) ||
3964 A->getOption().matches(options::OPT_fno_signed_char)) {
3965 CmdArgs.push_back("-fno-signed-char");
3966 }
3967 } else if (!isSignedCharDefault(T)) {
3968 CmdArgs.push_back("-fno-signed-char");
3969 }
3970
3971 // The default depends on the language standard.
3972 Args.AddLastArg(CmdArgs, options::OPT_fchar8__t, options::OPT_fno_char8__t);
3973
3974 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
3975 options::OPT_fno_short_wchar)) {
3976 if (A->getOption().matches(options::OPT_fshort_wchar)) {
3977 CmdArgs.push_back("-fwchar-type=short");
3978 CmdArgs.push_back("-fno-signed-wchar");
3979 } else {
3980 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
3981 CmdArgs.push_back("-fwchar-type=int");
3982 if (T.isOSzOS() ||
3983 (IsARM && !(T.isOSWindows() || T.isOSNetBSD() || T.isOSOpenBSD())))
3984 CmdArgs.push_back("-fno-signed-wchar");
3985 else
3986 CmdArgs.push_back("-fsigned-wchar");
3987 }
3988 } else if (T.isOSzOS())
3989 CmdArgs.push_back("-fno-signed-wchar");
3990 }
3991
RenderObjCOptions(const ToolChain & TC,const Driver & D,const llvm::Triple & T,const ArgList & Args,ObjCRuntime & Runtime,bool InferCovariantReturns,const InputInfo & Input,ArgStringList & CmdArgs)3992 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
3993 const llvm::Triple &T, const ArgList &Args,
3994 ObjCRuntime &Runtime, bool InferCovariantReturns,
3995 const InputInfo &Input, ArgStringList &CmdArgs) {
3996 const llvm::Triple::ArchType Arch = TC.getArch();
3997
3998 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
3999 // is the default. Except for deployment target of 10.5, next runtime is
4000 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
4001 if (Runtime.isNonFragile()) {
4002 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
4003 options::OPT_fno_objc_legacy_dispatch,
4004 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
4005 if (TC.UseObjCMixedDispatch())
4006 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
4007 else
4008 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
4009 }
4010 }
4011
4012 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
4013 // to do Array/Dictionary subscripting by default.
4014 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
4015 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
4016 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
4017
4018 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
4019 // NOTE: This logic is duplicated in ToolChains.cpp.
4020 if (isObjCAutoRefCount(Args)) {
4021 TC.CheckObjCARC();
4022
4023 CmdArgs.push_back("-fobjc-arc");
4024
4025 // FIXME: It seems like this entire block, and several around it should be
4026 // wrapped in isObjC, but for now we just use it here as this is where it
4027 // was being used previously.
4028 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
4029 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
4030 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
4031 else
4032 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
4033 }
4034
4035 // Allow the user to enable full exceptions code emission.
4036 // We default off for Objective-C, on for Objective-C++.
4037 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
4038 options::OPT_fno_objc_arc_exceptions,
4039 /*Default=*/types::isCXX(Input.getType())))
4040 CmdArgs.push_back("-fobjc-arc-exceptions");
4041 }
4042
4043 // Silence warning for full exception code emission options when explicitly
4044 // set to use no ARC.
4045 if (Args.hasArg(options::OPT_fno_objc_arc)) {
4046 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
4047 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
4048 }
4049
4050 // Allow the user to control whether messages can be converted to runtime
4051 // functions.
4052 if (types::isObjC(Input.getType())) {
4053 auto *Arg = Args.getLastArg(
4054 options::OPT_fobjc_convert_messages_to_runtime_calls,
4055 options::OPT_fno_objc_convert_messages_to_runtime_calls);
4056 if (Arg &&
4057 Arg->getOption().matches(
4058 options::OPT_fno_objc_convert_messages_to_runtime_calls))
4059 CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
4060 }
4061
4062 // -fobjc-infer-related-result-type is the default, except in the Objective-C
4063 // rewriter.
4064 if (InferCovariantReturns)
4065 CmdArgs.push_back("-fno-objc-infer-related-result-type");
4066
4067 // Pass down -fobjc-weak or -fno-objc-weak if present.
4068 if (types::isObjC(Input.getType())) {
4069 auto WeakArg =
4070 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
4071 if (!WeakArg) {
4072 // nothing to do
4073 } else if (!Runtime.allowsWeak()) {
4074 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
4075 D.Diag(diag::err_objc_weak_unsupported);
4076 } else {
4077 WeakArg->render(Args, CmdArgs);
4078 }
4079 }
4080
4081 if (Args.hasArg(options::OPT_fobjc_disable_direct_methods_for_testing))
4082 CmdArgs.push_back("-fobjc-disable-direct-methods-for-testing");
4083 }
4084
RenderDiagnosticsOptions(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)4085 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
4086 ArgStringList &CmdArgs) {
4087 bool CaretDefault = true;
4088 bool ColumnDefault = true;
4089
4090 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
4091 options::OPT__SLASH_diagnostics_column,
4092 options::OPT__SLASH_diagnostics_caret)) {
4093 switch (A->getOption().getID()) {
4094 case options::OPT__SLASH_diagnostics_caret:
4095 CaretDefault = true;
4096 ColumnDefault = true;
4097 break;
4098 case options::OPT__SLASH_diagnostics_column:
4099 CaretDefault = false;
4100 ColumnDefault = true;
4101 break;
4102 case options::OPT__SLASH_diagnostics_classic:
4103 CaretDefault = false;
4104 ColumnDefault = false;
4105 break;
4106 }
4107 }
4108
4109 // -fcaret-diagnostics is default.
4110 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
4111 options::OPT_fno_caret_diagnostics, CaretDefault))
4112 CmdArgs.push_back("-fno-caret-diagnostics");
4113
4114 Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_fixit_info,
4115 options::OPT_fno_diagnostics_fixit_info);
4116 Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_show_option,
4117 options::OPT_fno_diagnostics_show_option);
4118
4119 if (const Arg *A =
4120 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
4121 CmdArgs.push_back("-fdiagnostics-show-category");
4122 CmdArgs.push_back(A->getValue());
4123 }
4124
4125 Args.addOptInFlag(CmdArgs, options::OPT_fdiagnostics_show_hotness,
4126 options::OPT_fno_diagnostics_show_hotness);
4127
4128 if (const Arg *A =
4129 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
4130 std::string Opt =
4131 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
4132 CmdArgs.push_back(Args.MakeArgString(Opt));
4133 }
4134
4135 if (const Arg *A =
4136 Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) {
4137 std::string Opt =
4138 std::string("-fdiagnostics-misexpect-tolerance=") + A->getValue();
4139 CmdArgs.push_back(Args.MakeArgString(Opt));
4140 }
4141
4142 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
4143 CmdArgs.push_back("-fdiagnostics-format");
4144 CmdArgs.push_back(A->getValue());
4145 if (StringRef(A->getValue()) == "sarif" ||
4146 StringRef(A->getValue()) == "SARIF")
4147 D.Diag(diag::warn_drv_sarif_format_unstable);
4148 }
4149
4150 if (const Arg *A = Args.getLastArg(
4151 options::OPT_fdiagnostics_show_note_include_stack,
4152 options::OPT_fno_diagnostics_show_note_include_stack)) {
4153 const Option &O = A->getOption();
4154 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
4155 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
4156 else
4157 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
4158 }
4159
4160 // Color diagnostics are parsed by the driver directly from argv and later
4161 // re-parsed to construct this job; claim any possible color diagnostic here
4162 // to avoid warn_drv_unused_argument and diagnose bad
4163 // OPT_fdiagnostics_color_EQ values.
4164 Args.getLastArg(options::OPT_fcolor_diagnostics,
4165 options::OPT_fno_color_diagnostics);
4166 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_color_EQ)) {
4167 StringRef Value(A->getValue());
4168 if (Value != "always" && Value != "never" && Value != "auto")
4169 D.Diag(diag::err_drv_invalid_argument_to_option)
4170 << Value << A->getOption().getName();
4171 }
4172
4173 if (D.getDiags().getDiagnosticOptions().ShowColors)
4174 CmdArgs.push_back("-fcolor-diagnostics");
4175
4176 if (Args.hasArg(options::OPT_fansi_escape_codes))
4177 CmdArgs.push_back("-fansi-escape-codes");
4178
4179 Args.addOptOutFlag(CmdArgs, options::OPT_fshow_source_location,
4180 options::OPT_fno_show_source_location);
4181
4182 Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_show_line_numbers,
4183 options::OPT_fno_diagnostics_show_line_numbers);
4184
4185 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
4186 CmdArgs.push_back("-fdiagnostics-absolute-paths");
4187
4188 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
4189 ColumnDefault))
4190 CmdArgs.push_back("-fno-show-column");
4191
4192 Args.addOptOutFlag(CmdArgs, options::OPT_fspell_checking,
4193 options::OPT_fno_spell_checking);
4194 }
4195
getDebugFissionKind(const Driver & D,const ArgList & Args,Arg * & Arg)4196 DwarfFissionKind tools::getDebugFissionKind(const Driver &D,
4197 const ArgList &Args, Arg *&Arg) {
4198 Arg = Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ,
4199 options::OPT_gno_split_dwarf);
4200 if (!Arg || Arg->getOption().matches(options::OPT_gno_split_dwarf))
4201 return DwarfFissionKind::None;
4202
4203 if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
4204 return DwarfFissionKind::Split;
4205
4206 StringRef Value = Arg->getValue();
4207 if (Value == "split")
4208 return DwarfFissionKind::Split;
4209 if (Value == "single")
4210 return DwarfFissionKind::Single;
4211
4212 D.Diag(diag::err_drv_unsupported_option_argument)
4213 << Arg->getSpelling() << Arg->getValue();
4214 return DwarfFissionKind::None;
4215 }
4216
renderDwarfFormat(const Driver & D,const llvm::Triple & T,const ArgList & Args,ArgStringList & CmdArgs,unsigned DwarfVersion)4217 static void renderDwarfFormat(const Driver &D, const llvm::Triple &T,
4218 const ArgList &Args, ArgStringList &CmdArgs,
4219 unsigned DwarfVersion) {
4220 auto *DwarfFormatArg =
4221 Args.getLastArg(options::OPT_gdwarf64, options::OPT_gdwarf32);
4222 if (!DwarfFormatArg)
4223 return;
4224
4225 if (DwarfFormatArg->getOption().matches(options::OPT_gdwarf64)) {
4226 if (DwarfVersion < 3)
4227 D.Diag(diag::err_drv_argument_only_allowed_with)
4228 << DwarfFormatArg->getAsString(Args) << "DWARFv3 or greater";
4229 else if (!T.isArch64Bit())
4230 D.Diag(diag::err_drv_argument_only_allowed_with)
4231 << DwarfFormatArg->getAsString(Args) << "64 bit architecture";
4232 else if (!T.isOSBinFormatELF())
4233 D.Diag(diag::err_drv_argument_only_allowed_with)
4234 << DwarfFormatArg->getAsString(Args) << "ELF platforms";
4235 }
4236
4237 DwarfFormatArg->render(Args, CmdArgs);
4238 }
4239
4240 static void
renderDebugOptions(const ToolChain & TC,const Driver & D,const llvm::Triple & T,const ArgList & Args,bool IRInput,ArgStringList & CmdArgs,const InputInfo & Output,llvm::codegenoptions::DebugInfoKind & DebugInfoKind,DwarfFissionKind & DwarfFission)4241 renderDebugOptions(const ToolChain &TC, const Driver &D, const llvm::Triple &T,
4242 const ArgList &Args, bool IRInput, ArgStringList &CmdArgs,
4243 const InputInfo &Output,
4244 llvm::codegenoptions::DebugInfoKind &DebugInfoKind,
4245 DwarfFissionKind &DwarfFission) {
4246 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
4247 options::OPT_fno_debug_info_for_profiling, false) &&
4248 checkDebugInfoOption(
4249 Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
4250 CmdArgs.push_back("-fdebug-info-for-profiling");
4251
4252 // The 'g' groups options involve a somewhat intricate sequence of decisions
4253 // about what to pass from the driver to the frontend, but by the time they
4254 // reach cc1 they've been factored into three well-defined orthogonal choices:
4255 // * what level of debug info to generate
4256 // * what dwarf version to write
4257 // * what debugger tuning to use
4258 // This avoids having to monkey around further in cc1 other than to disable
4259 // codeview if not running in a Windows environment. Perhaps even that
4260 // decision should be made in the driver as well though.
4261 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
4262
4263 bool SplitDWARFInlining =
4264 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
4265 options::OPT_fno_split_dwarf_inlining, false);
4266
4267 // Normally -gsplit-dwarf is only useful with -gN. For IR input, Clang does
4268 // object file generation and no IR generation, -gN should not be needed. So
4269 // allow -gsplit-dwarf with either -gN or IR input.
4270 if (IRInput || Args.hasArg(options::OPT_g_Group)) {
4271 Arg *SplitDWARFArg;
4272 DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
4273 if (DwarfFission != DwarfFissionKind::None &&
4274 !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
4275 DwarfFission = DwarfFissionKind::None;
4276 SplitDWARFInlining = false;
4277 }
4278 }
4279 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
4280 DebugInfoKind = llvm::codegenoptions::DebugInfoConstructor;
4281
4282 // If the last option explicitly specified a debug-info level, use it.
4283 if (checkDebugInfoOption(A, Args, D, TC) &&
4284 A->getOption().matches(options::OPT_gN_Group)) {
4285 DebugInfoKind = debugLevelToInfoKind(*A);
4286 // For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
4287 // complicated if you've disabled inline info in the skeleton CUs
4288 // (SplitDWARFInlining) - then there's value in composing split-dwarf and
4289 // line-tables-only, so let those compose naturally in that case.
4290 if (DebugInfoKind == llvm::codegenoptions::NoDebugInfo ||
4291 DebugInfoKind == llvm::codegenoptions::DebugDirectivesOnly ||
4292 (DebugInfoKind == llvm::codegenoptions::DebugLineTablesOnly &&
4293 SplitDWARFInlining))
4294 DwarfFission = DwarfFissionKind::None;
4295 }
4296 }
4297
4298 // If a debugger tuning argument appeared, remember it.
4299 bool HasDebuggerTuning = false;
4300 if (const Arg *A =
4301 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
4302 HasDebuggerTuning = true;
4303 if (checkDebugInfoOption(A, Args, D, TC)) {
4304 if (A->getOption().matches(options::OPT_glldb))
4305 DebuggerTuning = llvm::DebuggerKind::LLDB;
4306 else if (A->getOption().matches(options::OPT_gsce))
4307 DebuggerTuning = llvm::DebuggerKind::SCE;
4308 else if (A->getOption().matches(options::OPT_gdbx))
4309 DebuggerTuning = llvm::DebuggerKind::DBX;
4310 else
4311 DebuggerTuning = llvm::DebuggerKind::GDB;
4312 }
4313 }
4314
4315 // If a -gdwarf argument appeared, remember it.
4316 bool EmitDwarf = false;
4317 if (const Arg *A = getDwarfNArg(Args))
4318 EmitDwarf = checkDebugInfoOption(A, Args, D, TC);
4319
4320 bool EmitCodeView = false;
4321 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview))
4322 EmitCodeView = checkDebugInfoOption(A, Args, D, TC);
4323
4324 // If the user asked for debug info but did not explicitly specify -gcodeview
4325 // or -gdwarf, ask the toolchain for the default format.
4326 if (!EmitCodeView && !EmitDwarf &&
4327 DebugInfoKind != llvm::codegenoptions::NoDebugInfo) {
4328 switch (TC.getDefaultDebugFormat()) {
4329 case llvm::codegenoptions::DIF_CodeView:
4330 EmitCodeView = true;
4331 break;
4332 case llvm::codegenoptions::DIF_DWARF:
4333 EmitDwarf = true;
4334 break;
4335 }
4336 }
4337
4338 unsigned RequestedDWARFVersion = 0; // DWARF version requested by the user
4339 unsigned EffectiveDWARFVersion = 0; // DWARF version TC can generate. It may
4340 // be lower than what the user wanted.
4341 if (EmitDwarf) {
4342 RequestedDWARFVersion = getDwarfVersion(TC, Args);
4343 // Clamp effective DWARF version to the max supported by the toolchain.
4344 EffectiveDWARFVersion =
4345 std::min(RequestedDWARFVersion, TC.getMaxDwarfVersion());
4346 } else {
4347 Args.ClaimAllArgs(options::OPT_fdebug_default_version);
4348 }
4349
4350 // -gline-directives-only supported only for the DWARF debug info.
4351 if (RequestedDWARFVersion == 0 &&
4352 DebugInfoKind == llvm::codegenoptions::DebugDirectivesOnly)
4353 DebugInfoKind = llvm::codegenoptions::NoDebugInfo;
4354
4355 // strict DWARF is set to false by default. But for DBX, we need it to be set
4356 // as true by default.
4357 if (const Arg *A = Args.getLastArg(options::OPT_gstrict_dwarf))
4358 (void)checkDebugInfoOption(A, Args, D, TC);
4359 if (Args.hasFlag(options::OPT_gstrict_dwarf, options::OPT_gno_strict_dwarf,
4360 DebuggerTuning == llvm::DebuggerKind::DBX))
4361 CmdArgs.push_back("-gstrict-dwarf");
4362
4363 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
4364 Args.ClaimAllArgs(options::OPT_g_flags_Group);
4365
4366 // Column info is included by default for everything except SCE and
4367 // CodeView. Clang doesn't track end columns, just starting columns, which,
4368 // in theory, is fine for CodeView (and PDB). In practice, however, the
4369 // Microsoft debuggers don't handle missing end columns well, and the AIX
4370 // debugger DBX also doesn't handle the columns well, so it's better not to
4371 // include any column info.
4372 if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
4373 (void)checkDebugInfoOption(A, Args, D, TC);
4374 if (!Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
4375 !EmitCodeView &&
4376 (DebuggerTuning != llvm::DebuggerKind::SCE &&
4377 DebuggerTuning != llvm::DebuggerKind::DBX)))
4378 CmdArgs.push_back("-gno-column-info");
4379
4380 // FIXME: Move backend command line options to the module.
4381 if (Args.hasFlag(options::OPT_gmodules, options::OPT_gno_modules, false)) {
4382 // If -gline-tables-only or -gline-directives-only is the last option it
4383 // wins.
4384 if (checkDebugInfoOption(Args.getLastArg(options::OPT_gmodules), Args, D,
4385 TC)) {
4386 if (DebugInfoKind != llvm::codegenoptions::DebugLineTablesOnly &&
4387 DebugInfoKind != llvm::codegenoptions::DebugDirectivesOnly) {
4388 DebugInfoKind = llvm::codegenoptions::DebugInfoConstructor;
4389 CmdArgs.push_back("-dwarf-ext-refs");
4390 CmdArgs.push_back("-fmodule-format=obj");
4391 }
4392 }
4393 }
4394
4395 if (T.isOSBinFormatELF() && SplitDWARFInlining)
4396 CmdArgs.push_back("-fsplit-dwarf-inlining");
4397
4398 // After we've dealt with all combinations of things that could
4399 // make DebugInfoKind be other than None or DebugLineTablesOnly,
4400 // figure out if we need to "upgrade" it to standalone debug info.
4401 // We parse these two '-f' options whether or not they will be used,
4402 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
4403 bool NeedFullDebug = Args.hasFlag(
4404 options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,
4405 DebuggerTuning == llvm::DebuggerKind::LLDB ||
4406 TC.GetDefaultStandaloneDebug());
4407 if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
4408 (void)checkDebugInfoOption(A, Args, D, TC);
4409
4410 if (DebugInfoKind == llvm::codegenoptions::LimitedDebugInfo ||
4411 DebugInfoKind == llvm::codegenoptions::DebugInfoConstructor) {
4412 if (Args.hasFlag(options::OPT_fno_eliminate_unused_debug_types,
4413 options::OPT_feliminate_unused_debug_types, false))
4414 DebugInfoKind = llvm::codegenoptions::UnusedTypeInfo;
4415 else if (NeedFullDebug)
4416 DebugInfoKind = llvm::codegenoptions::FullDebugInfo;
4417 }
4418
4419 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
4420 false)) {
4421 // Source embedding is a vendor extension to DWARF v5. By now we have
4422 // checked if a DWARF version was stated explicitly, and have otherwise
4423 // fallen back to the target default, so if this is still not at least 5
4424 // we emit an error.
4425 const Arg *A = Args.getLastArg(options::OPT_gembed_source);
4426 if (RequestedDWARFVersion < 5)
4427 D.Diag(diag::err_drv_argument_only_allowed_with)
4428 << A->getAsString(Args) << "-gdwarf-5";
4429 else if (EffectiveDWARFVersion < 5)
4430 // The toolchain has reduced allowed dwarf version, so we can't enable
4431 // -gembed-source.
4432 D.Diag(diag::warn_drv_dwarf_version_limited_by_target)
4433 << A->getAsString(Args) << TC.getTripleString() << 5
4434 << EffectiveDWARFVersion;
4435 else if (checkDebugInfoOption(A, Args, D, TC))
4436 CmdArgs.push_back("-gembed-source");
4437 }
4438
4439 if (EmitCodeView) {
4440 CmdArgs.push_back("-gcodeview");
4441
4442 Args.addOptInFlag(CmdArgs, options::OPT_gcodeview_ghash,
4443 options::OPT_gno_codeview_ghash);
4444
4445 Args.addOptOutFlag(CmdArgs, options::OPT_gcodeview_command_line,
4446 options::OPT_gno_codeview_command_line);
4447 }
4448
4449 Args.addOptOutFlag(CmdArgs, options::OPT_ginline_line_tables,
4450 options::OPT_gno_inline_line_tables);
4451
4452 // When emitting remarks, we need at least debug lines in the output.
4453 if (willEmitRemarks(Args) &&
4454 DebugInfoKind <= llvm::codegenoptions::DebugDirectivesOnly)
4455 DebugInfoKind = llvm::codegenoptions::DebugLineTablesOnly;
4456
4457 // Adjust the debug info kind for the given toolchain.
4458 TC.adjustDebugInfoKind(DebugInfoKind, Args);
4459
4460 // On AIX, the debugger tuning option can be omitted if it is not explicitly
4461 // set.
4462 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, EffectiveDWARFVersion,
4463 T.isOSAIX() && !HasDebuggerTuning
4464 ? llvm::DebuggerKind::Default
4465 : DebuggerTuning);
4466
4467 // -fdebug-macro turns on macro debug info generation.
4468 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
4469 false))
4470 if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
4471 D, TC))
4472 CmdArgs.push_back("-debug-info-macro");
4473
4474 // -ggnu-pubnames turns on gnu style pubnames in the backend.
4475 const auto *PubnamesArg =
4476 Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
4477 options::OPT_gpubnames, options::OPT_gno_pubnames);
4478 if (DwarfFission != DwarfFissionKind::None ||
4479 (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
4480 if (!PubnamesArg ||
4481 (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
4482 !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
4483 CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
4484 options::OPT_gpubnames)
4485 ? "-gpubnames"
4486 : "-ggnu-pubnames");
4487 const auto *SimpleTemplateNamesArg =
4488 Args.getLastArg(options::OPT_gsimple_template_names,
4489 options::OPT_gno_simple_template_names);
4490 bool ForwardTemplateParams = DebuggerTuning == llvm::DebuggerKind::SCE;
4491 if (SimpleTemplateNamesArg &&
4492 checkDebugInfoOption(SimpleTemplateNamesArg, Args, D, TC)) {
4493 const auto &Opt = SimpleTemplateNamesArg->getOption();
4494 if (Opt.matches(options::OPT_gsimple_template_names)) {
4495 ForwardTemplateParams = true;
4496 CmdArgs.push_back("-gsimple-template-names=simple");
4497 }
4498 }
4499
4500 if (const Arg *A = Args.getLastArg(options::OPT_gsrc_hash_EQ)) {
4501 StringRef v = A->getValue();
4502 CmdArgs.push_back(Args.MakeArgString("-gsrc-hash=" + v));
4503 }
4504
4505 Args.addOptInFlag(CmdArgs, options::OPT_fdebug_ranges_base_address,
4506 options::OPT_fno_debug_ranges_base_address);
4507
4508 // -gdwarf-aranges turns on the emission of the aranges section in the
4509 // backend.
4510 // Always enabled for SCE tuning.
4511 bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
4512 if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
4513 NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
4514 if (NeedAranges) {
4515 CmdArgs.push_back("-mllvm");
4516 CmdArgs.push_back("-generate-arange-section");
4517 }
4518
4519 Args.addOptInFlag(CmdArgs, options::OPT_fforce_dwarf_frame,
4520 options::OPT_fno_force_dwarf_frame);
4521
4522 if (Args.hasFlag(options::OPT_fdebug_types_section,
4523 options::OPT_fno_debug_types_section, false)) {
4524 if (!(T.isOSBinFormatELF() || T.isOSBinFormatWasm())) {
4525 D.Diag(diag::err_drv_unsupported_opt_for_target)
4526 << Args.getLastArg(options::OPT_fdebug_types_section)
4527 ->getAsString(Args)
4528 << T.getTriple();
4529 } else if (checkDebugInfoOption(
4530 Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
4531 TC)) {
4532 CmdArgs.push_back("-mllvm");
4533 CmdArgs.push_back("-generate-type-units");
4534 }
4535 }
4536
4537 // To avoid join/split of directory+filename, the integrated assembler prefers
4538 // the directory form of .file on all DWARF versions. GNU as doesn't allow the
4539 // form before DWARF v5.
4540 if (!Args.hasFlag(options::OPT_fdwarf_directory_asm,
4541 options::OPT_fno_dwarf_directory_asm,
4542 TC.useIntegratedAs() || EffectiveDWARFVersion >= 5))
4543 CmdArgs.push_back("-fno-dwarf-directory-asm");
4544
4545 // Decide how to render forward declarations of template instantiations.
4546 // SCE wants full descriptions, others just get them in the name.
4547 if (ForwardTemplateParams)
4548 CmdArgs.push_back("-debug-forward-template-params");
4549
4550 // Do we need to explicitly import anonymous namespaces into the parent
4551 // scope?
4552 if (DebuggerTuning == llvm::DebuggerKind::SCE)
4553 CmdArgs.push_back("-dwarf-explicit-import");
4554
4555 renderDwarfFormat(D, T, Args, CmdArgs, EffectiveDWARFVersion);
4556 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
4557
4558 // This controls whether or not we perform JustMyCode instrumentation.
4559 if (Args.hasFlag(options::OPT_fjmc, options::OPT_fno_jmc, false)) {
4560 if (TC.getTriple().isOSBinFormatELF() || D.IsCLMode()) {
4561 if (DebugInfoKind >= llvm::codegenoptions::DebugInfoConstructor)
4562 CmdArgs.push_back("-fjmc");
4563 else if (D.IsCLMode())
4564 D.Diag(clang::diag::warn_drv_jmc_requires_debuginfo) << "/JMC"
4565 << "'/Zi', '/Z7'";
4566 else
4567 D.Diag(clang::diag::warn_drv_jmc_requires_debuginfo) << "-fjmc"
4568 << "-g";
4569 } else {
4570 D.Diag(clang::diag::warn_drv_fjmc_for_elf_only);
4571 }
4572 }
4573
4574 // Add in -fdebug-compilation-dir if necessary.
4575 const char *DebugCompilationDir =
4576 addDebugCompDirArg(Args, CmdArgs, D.getVFS());
4577
4578 addDebugPrefixMapArg(D, TC, Args, CmdArgs);
4579
4580 // Add the output path to the object file for CodeView debug infos.
4581 if (EmitCodeView && Output.isFilename())
4582 addDebugObjectName(Args, CmdArgs, DebugCompilationDir,
4583 Output.getFilename());
4584 }
4585
ProcessVSRuntimeLibrary(const ArgList & Args,ArgStringList & CmdArgs)4586 static void ProcessVSRuntimeLibrary(const ArgList &Args,
4587 ArgStringList &CmdArgs) {
4588 unsigned RTOptionID = options::OPT__SLASH_MT;
4589
4590 if (Args.hasArg(options::OPT__SLASH_LDd))
4591 // The /LDd option implies /MTd. The dependent lib part can be overridden,
4592 // but defining _DEBUG is sticky.
4593 RTOptionID = options::OPT__SLASH_MTd;
4594
4595 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
4596 RTOptionID = A->getOption().getID();
4597
4598 if (Arg *A = Args.getLastArg(options::OPT_fms_runtime_lib_EQ)) {
4599 RTOptionID = llvm::StringSwitch<unsigned>(A->getValue())
4600 .Case("static", options::OPT__SLASH_MT)
4601 .Case("static_dbg", options::OPT__SLASH_MTd)
4602 .Case("dll", options::OPT__SLASH_MD)
4603 .Case("dll_dbg", options::OPT__SLASH_MDd)
4604 .Default(options::OPT__SLASH_MT);
4605 }
4606
4607 StringRef FlagForCRT;
4608 switch (RTOptionID) {
4609 case options::OPT__SLASH_MD:
4610 if (Args.hasArg(options::OPT__SLASH_LDd))
4611 CmdArgs.push_back("-D_DEBUG");
4612 CmdArgs.push_back("-D_MT");
4613 CmdArgs.push_back("-D_DLL");
4614 FlagForCRT = "--dependent-lib=msvcrt";
4615 break;
4616 case options::OPT__SLASH_MDd:
4617 CmdArgs.push_back("-D_DEBUG");
4618 CmdArgs.push_back("-D_MT");
4619 CmdArgs.push_back("-D_DLL");
4620 FlagForCRT = "--dependent-lib=msvcrtd";
4621 break;
4622 case options::OPT__SLASH_MT:
4623 if (Args.hasArg(options::OPT__SLASH_LDd))
4624 CmdArgs.push_back("-D_DEBUG");
4625 CmdArgs.push_back("-D_MT");
4626 CmdArgs.push_back("-flto-visibility-public-std");
4627 FlagForCRT = "--dependent-lib=libcmt";
4628 break;
4629 case options::OPT__SLASH_MTd:
4630 CmdArgs.push_back("-D_DEBUG");
4631 CmdArgs.push_back("-D_MT");
4632 CmdArgs.push_back("-flto-visibility-public-std");
4633 FlagForCRT = "--dependent-lib=libcmtd";
4634 break;
4635 default:
4636 llvm_unreachable("Unexpected option ID.");
4637 }
4638
4639 if (Args.hasArg(options::OPT_fms_omit_default_lib)) {
4640 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
4641 } else {
4642 CmdArgs.push_back(FlagForCRT.data());
4643
4644 // This provides POSIX compatibility (maps 'open' to '_open'), which most
4645 // users want. The /Za flag to cl.exe turns this off, but it's not
4646 // implemented in clang.
4647 CmdArgs.push_back("--dependent-lib=oldnames");
4648 }
4649 }
4650
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const4651 void Clang::ConstructJob(Compilation &C, const JobAction &JA,
4652 const InputInfo &Output, const InputInfoList &Inputs,
4653 const ArgList &Args, const char *LinkingOutput) const {
4654 const auto &TC = getToolChain();
4655 const llvm::Triple &RawTriple = TC.getTriple();
4656 const llvm::Triple &Triple = TC.getEffectiveTriple();
4657 const std::string &TripleStr = Triple.getTriple();
4658
4659 bool KernelOrKext =
4660 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
4661 const Driver &D = TC.getDriver();
4662 ArgStringList CmdArgs;
4663
4664 assert(Inputs.size() >= 1 && "Must have at least one input.");
4665 // CUDA/HIP compilation may have multiple inputs (source file + results of
4666 // device-side compilations). OpenMP device jobs also take the host IR as a
4667 // second input. Module precompilation accepts a list of header files to
4668 // include as part of the module. API extraction accepts a list of header
4669 // files whose API information is emitted in the output. All other jobs are
4670 // expected to have exactly one input.
4671 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
4672 bool IsCudaDevice = JA.isDeviceOffloading(Action::OFK_Cuda);
4673 bool IsHIP = JA.isOffloading(Action::OFK_HIP);
4674 bool IsHIPDevice = JA.isDeviceOffloading(Action::OFK_HIP);
4675 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
4676 bool IsExtractAPI = isa<ExtractAPIJobAction>(JA);
4677 bool IsDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
4678 JA.isDeviceOffloading(Action::OFK_Host));
4679 bool IsHostOffloadingAction =
4680 JA.isHostOffloading(Action::OFK_OpenMP) ||
4681 (JA.isHostOffloading(C.getActiveOffloadKinds()) &&
4682 Args.hasFlag(options::OPT_offload_new_driver,
4683 options::OPT_no_offload_new_driver, false));
4684
4685 bool IsRDCMode =
4686 Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false);
4687 bool IsUsingLTO = D.isUsingLTO(IsDeviceOffloadAction);
4688 auto LTOMode = D.getLTOMode(IsDeviceOffloadAction);
4689
4690 // Extract API doesn't have a main input file, so invent a fake one as a
4691 // placeholder.
4692 InputInfo ExtractAPIPlaceholderInput(Inputs[0].getType(), "extract-api",
4693 "extract-api");
4694
4695 const InputInfo &Input =
4696 IsExtractAPI ? ExtractAPIPlaceholderInput : Inputs[0];
4697
4698 InputInfoList ExtractAPIInputs;
4699 InputInfoList HostOffloadingInputs;
4700 const InputInfo *CudaDeviceInput = nullptr;
4701 const InputInfo *OpenMPDeviceInput = nullptr;
4702 for (const InputInfo &I : Inputs) {
4703 if (&I == &Input || I.getType() == types::TY_Nothing) {
4704 // This is the primary input or contains nothing.
4705 } else if (IsExtractAPI) {
4706 auto ExpectedInputType = ExtractAPIPlaceholderInput.getType();
4707 if (I.getType() != ExpectedInputType) {
4708 D.Diag(diag::err_drv_extract_api_wrong_kind)
4709 << I.getFilename() << types::getTypeName(I.getType())
4710 << types::getTypeName(ExpectedInputType);
4711 }
4712 ExtractAPIInputs.push_back(I);
4713 } else if (IsHostOffloadingAction) {
4714 HostOffloadingInputs.push_back(I);
4715 } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
4716 CudaDeviceInput = &I;
4717 } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
4718 OpenMPDeviceInput = &I;
4719 } else {
4720 llvm_unreachable("unexpectedly given multiple inputs");
4721 }
4722 }
4723
4724 const llvm::Triple *AuxTriple =
4725 (IsCuda || IsHIP) ? TC.getAuxTriple() : nullptr;
4726 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
4727 bool IsIAMCU = RawTriple.isOSIAMCU();
4728
4729 // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
4730 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
4731 // Windows), we need to pass Windows-specific flags to cc1.
4732 if (IsCuda || IsHIP)
4733 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
4734
4735 // C++ is not supported for IAMCU.
4736 if (IsIAMCU && types::isCXX(Input.getType()))
4737 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
4738
4739 // Invoke ourselves in -cc1 mode.
4740 //
4741 // FIXME: Implement custom jobs for internal actions.
4742 CmdArgs.push_back("-cc1");
4743
4744 // Add the "effective" target triple.
4745 CmdArgs.push_back("-triple");
4746 CmdArgs.push_back(Args.MakeArgString(TripleStr));
4747
4748 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
4749 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
4750 Args.ClaimAllArgs(options::OPT_MJ);
4751 } else if (const Arg *GenCDBFragment =
4752 Args.getLastArg(options::OPT_gen_cdb_fragment_path)) {
4753 DumpCompilationDatabaseFragmentToDir(GenCDBFragment->getValue(), C,
4754 TripleStr, Output, Input, Args);
4755 Args.ClaimAllArgs(options::OPT_gen_cdb_fragment_path);
4756 }
4757
4758 if (IsCuda || IsHIP) {
4759 // We have to pass the triple of the host if compiling for a CUDA/HIP device
4760 // and vice-versa.
4761 std::string NormalizedTriple;
4762 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
4763 JA.isDeviceOffloading(Action::OFK_HIP))
4764 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
4765 ->getTriple()
4766 .normalize();
4767 else {
4768 // Host-side compilation.
4769 NormalizedTriple =
4770 (IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
4771 : C.getSingleOffloadToolChain<Action::OFK_HIP>())
4772 ->getTriple()
4773 .normalize();
4774 if (IsCuda) {
4775 // We need to figure out which CUDA version we're compiling for, as that
4776 // determines how we load and launch GPU kernels.
4777 auto *CTC = static_cast<const toolchains::CudaToolChain *>(
4778 C.getSingleOffloadToolChain<Action::OFK_Cuda>());
4779 assert(CTC && "Expected valid CUDA Toolchain.");
4780 if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
4781 CmdArgs.push_back(Args.MakeArgString(
4782 Twine("-target-sdk-version=") +
4783 CudaVersionToString(CTC->CudaInstallation.version())));
4784 // Unsized function arguments used for variadics were introduced in
4785 // CUDA-9.0. We still do not support generating code that actually uses
4786 // variadic arguments yet, but we do need to allow parsing them as
4787 // recent CUDA headers rely on that.
4788 // https://github.com/llvm/llvm-project/issues/58410
4789 if (CTC->CudaInstallation.version() >= CudaVersion::CUDA_90)
4790 CmdArgs.push_back("-fcuda-allow-variadic-functions");
4791 }
4792 }
4793 CmdArgs.push_back("-aux-triple");
4794 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
4795
4796 if (JA.isDeviceOffloading(Action::OFK_HIP) &&
4797 getToolChain().getTriple().isAMDGPU()) {
4798 // Device side compilation printf
4799 if (Args.getLastArg(options::OPT_mprintf_kind_EQ)) {
4800 CmdArgs.push_back(Args.MakeArgString(
4801 "-mprintf-kind=" +
4802 Args.getLastArgValue(options::OPT_mprintf_kind_EQ)));
4803 // Force compiler error on invalid conversion specifiers
4804 CmdArgs.push_back(
4805 Args.MakeArgString("-Werror=format-invalid-specifier"));
4806 }
4807 }
4808 }
4809
4810 // Unconditionally claim the printf option now to avoid unused diagnostic.
4811 if (const Arg *PF = Args.getLastArg(options::OPT_mprintf_kind_EQ))
4812 PF->claim();
4813
4814 if (Args.hasFlag(options::OPT_fsycl, options::OPT_fno_sycl, false)) {
4815 CmdArgs.push_back("-fsycl-is-device");
4816
4817 if (Arg *A = Args.getLastArg(options::OPT_sycl_std_EQ)) {
4818 A->render(Args, CmdArgs);
4819 } else {
4820 // Ensure the default version in SYCL mode is 2020.
4821 CmdArgs.push_back("-sycl-std=2020");
4822 }
4823 }
4824
4825 if (IsOpenMPDevice) {
4826 // We have to pass the triple of the host if compiling for an OpenMP device.
4827 std::string NormalizedTriple =
4828 C.getSingleOffloadToolChain<Action::OFK_Host>()
4829 ->getTriple()
4830 .normalize();
4831 CmdArgs.push_back("-aux-triple");
4832 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
4833 }
4834
4835 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
4836 Triple.getArch() == llvm::Triple::thumb)) {
4837 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
4838 unsigned Version = 0;
4839 bool Failure =
4840 Triple.getArchName().substr(Offset).consumeInteger(10, Version);
4841 if (Failure || Version < 7)
4842 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
4843 << TripleStr;
4844 }
4845
4846 // Push all default warning arguments that are specific to
4847 // the given target. These come before user provided warning options
4848 // are provided.
4849 TC.addClangWarningOptions(CmdArgs);
4850
4851 // FIXME: Subclass ToolChain for SPIR and move this to addClangWarningOptions.
4852 if (Triple.isSPIR() || Triple.isSPIRV())
4853 CmdArgs.push_back("-Wspir-compat");
4854
4855 // Select the appropriate action.
4856 RewriteKind rewriteKind = RK_None;
4857
4858 bool UnifiedLTO = false;
4859 if (IsUsingLTO) {
4860 UnifiedLTO = Args.hasFlag(options::OPT_funified_lto,
4861 options::OPT_fno_unified_lto, Triple.isPS());
4862 if (UnifiedLTO)
4863 CmdArgs.push_back("-funified-lto");
4864 }
4865
4866 // If CollectArgsForIntegratedAssembler() isn't called below, claim the args
4867 // it claims when not running an assembler. Otherwise, clang would emit
4868 // "argument unused" warnings for assembler flags when e.g. adding "-E" to
4869 // flags while debugging something. That'd be somewhat inconvenient, and it's
4870 // also inconsistent with most other flags -- we don't warn on
4871 // -ffunction-sections not being used in -E mode either for example, even
4872 // though it's not really used either.
4873 if (!isa<AssembleJobAction>(JA)) {
4874 // The args claimed here should match the args used in
4875 // CollectArgsForIntegratedAssembler().
4876 if (TC.useIntegratedAs()) {
4877 Args.ClaimAllArgs(options::OPT_mrelax_all);
4878 Args.ClaimAllArgs(options::OPT_mno_relax_all);
4879 Args.ClaimAllArgs(options::OPT_mincremental_linker_compatible);
4880 Args.ClaimAllArgs(options::OPT_mno_incremental_linker_compatible);
4881 switch (C.getDefaultToolChain().getArch()) {
4882 case llvm::Triple::arm:
4883 case llvm::Triple::armeb:
4884 case llvm::Triple::thumb:
4885 case llvm::Triple::thumbeb:
4886 Args.ClaimAllArgs(options::OPT_mimplicit_it_EQ);
4887 break;
4888 default:
4889 break;
4890 }
4891 }
4892 Args.ClaimAllArgs(options::OPT_Wa_COMMA);
4893 Args.ClaimAllArgs(options::OPT_Xassembler);
4894 Args.ClaimAllArgs(options::OPT_femit_dwarf_unwind_EQ);
4895 }
4896
4897 if (isa<AnalyzeJobAction>(JA)) {
4898 assert(JA.getType() == types::TY_Plist && "Invalid output type.");
4899 CmdArgs.push_back("-analyze");
4900 } else if (isa<MigrateJobAction>(JA)) {
4901 CmdArgs.push_back("-migrate");
4902 } else if (isa<PreprocessJobAction>(JA)) {
4903 if (Output.getType() == types::TY_Dependencies)
4904 CmdArgs.push_back("-Eonly");
4905 else {
4906 CmdArgs.push_back("-E");
4907 if (Args.hasArg(options::OPT_rewrite_objc) &&
4908 !Args.hasArg(options::OPT_g_Group))
4909 CmdArgs.push_back("-P");
4910 else if (JA.getType() == types::TY_PP_CXXHeaderUnit)
4911 CmdArgs.push_back("-fdirectives-only");
4912 }
4913 } else if (isa<AssembleJobAction>(JA)) {
4914 CmdArgs.push_back("-emit-obj");
4915
4916 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
4917
4918 // Also ignore explicit -force_cpusubtype_ALL option.
4919 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
4920 } else if (isa<PrecompileJobAction>(JA)) {
4921 if (JA.getType() == types::TY_Nothing)
4922 CmdArgs.push_back("-fsyntax-only");
4923 else if (JA.getType() == types::TY_ModuleFile)
4924 CmdArgs.push_back("-emit-module-interface");
4925 else if (JA.getType() == types::TY_HeaderUnit)
4926 CmdArgs.push_back("-emit-header-unit");
4927 else
4928 CmdArgs.push_back("-emit-pch");
4929 } else if (isa<VerifyPCHJobAction>(JA)) {
4930 CmdArgs.push_back("-verify-pch");
4931 } else if (isa<ExtractAPIJobAction>(JA)) {
4932 assert(JA.getType() == types::TY_API_INFO &&
4933 "Extract API actions must generate a API information.");
4934 CmdArgs.push_back("-extract-api");
4935 if (Arg *ProductNameArg = Args.getLastArg(options::OPT_product_name_EQ))
4936 ProductNameArg->render(Args, CmdArgs);
4937 if (Arg *ExtractAPIIgnoresFileArg =
4938 Args.getLastArg(options::OPT_extract_api_ignores_EQ))
4939 ExtractAPIIgnoresFileArg->render(Args, CmdArgs);
4940 } else {
4941 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
4942 "Invalid action for clang tool.");
4943 if (JA.getType() == types::TY_Nothing) {
4944 CmdArgs.push_back("-fsyntax-only");
4945 } else if (JA.getType() == types::TY_LLVM_IR ||
4946 JA.getType() == types::TY_LTO_IR) {
4947 CmdArgs.push_back("-emit-llvm");
4948 } else if (JA.getType() == types::TY_LLVM_BC ||
4949 JA.getType() == types::TY_LTO_BC) {
4950 // Emit textual llvm IR for AMDGPU offloading for -emit-llvm -S
4951 if (Triple.isAMDGCN() && IsOpenMPDevice && Args.hasArg(options::OPT_S) &&
4952 Args.hasArg(options::OPT_emit_llvm)) {
4953 CmdArgs.push_back("-emit-llvm");
4954 } else {
4955 CmdArgs.push_back("-emit-llvm-bc");
4956 }
4957 } else if (JA.getType() == types::TY_IFS ||
4958 JA.getType() == types::TY_IFS_CPP) {
4959 StringRef ArgStr =
4960 Args.hasArg(options::OPT_interface_stub_version_EQ)
4961 ? Args.getLastArgValue(options::OPT_interface_stub_version_EQ)
4962 : "ifs-v1";
4963 CmdArgs.push_back("-emit-interface-stubs");
4964 CmdArgs.push_back(
4965 Args.MakeArgString(Twine("-interface-stub-version=") + ArgStr.str()));
4966 } else if (JA.getType() == types::TY_PP_Asm) {
4967 CmdArgs.push_back("-S");
4968 } else if (JA.getType() == types::TY_AST) {
4969 CmdArgs.push_back("-emit-pch");
4970 } else if (JA.getType() == types::TY_ModuleFile) {
4971 CmdArgs.push_back("-module-file-info");
4972 } else if (JA.getType() == types::TY_RewrittenObjC) {
4973 CmdArgs.push_back("-rewrite-objc");
4974 rewriteKind = RK_NonFragile;
4975 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
4976 CmdArgs.push_back("-rewrite-objc");
4977 rewriteKind = RK_Fragile;
4978 } else {
4979 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
4980 }
4981
4982 // Preserve use-list order by default when emitting bitcode, so that
4983 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
4984 // same result as running passes here. For LTO, we don't need to preserve
4985 // the use-list order, since serialization to bitcode is part of the flow.
4986 if (JA.getType() == types::TY_LLVM_BC)
4987 CmdArgs.push_back("-emit-llvm-uselists");
4988
4989 if (IsUsingLTO) {
4990 if (IsDeviceOffloadAction && !JA.isDeviceOffloading(Action::OFK_OpenMP) &&
4991 !Args.hasFlag(options::OPT_offload_new_driver,
4992 options::OPT_no_offload_new_driver, false) &&
4993 !Triple.isAMDGPU()) {
4994 D.Diag(diag::err_drv_unsupported_opt_for_target)
4995 << Args.getLastArg(options::OPT_foffload_lto,
4996 options::OPT_foffload_lto_EQ)
4997 ->getAsString(Args)
4998 << Triple.getTriple();
4999 } else if (Triple.isNVPTX() && !IsRDCMode &&
5000 JA.isDeviceOffloading(Action::OFK_Cuda)) {
5001 D.Diag(diag::err_drv_unsupported_opt_for_language_mode)
5002 << Args.getLastArg(options::OPT_foffload_lto,
5003 options::OPT_foffload_lto_EQ)
5004 ->getAsString(Args)
5005 << "-fno-gpu-rdc";
5006 } else {
5007 assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);
5008 CmdArgs.push_back(Args.MakeArgString(
5009 Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));
5010 // PS4 uses the legacy LTO API, which does not support some of the
5011 // features enabled by -flto-unit.
5012 if (!RawTriple.isPS4() ||
5013 (D.getLTOMode() == LTOK_Full) || !UnifiedLTO)
5014 CmdArgs.push_back("-flto-unit");
5015 }
5016 }
5017 }
5018
5019 Args.AddLastArg(CmdArgs, options::OPT_dumpdir);
5020
5021 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
5022 if (!types::isLLVMIR(Input.getType()))
5023 D.Diag(diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);
5024 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
5025 }
5026
5027 if (Triple.isPPC())
5028 Args.addOptInFlag(CmdArgs, options::OPT_mregnames,
5029 options::OPT_mno_regnames);
5030
5031 if (Args.getLastArg(options::OPT_fthin_link_bitcode_EQ))
5032 Args.AddLastArg(CmdArgs, options::OPT_fthin_link_bitcode_EQ);
5033
5034 if (Args.getLastArg(options::OPT_save_temps_EQ))
5035 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
5036
5037 auto *MemProfArg = Args.getLastArg(options::OPT_fmemory_profile,
5038 options::OPT_fmemory_profile_EQ,
5039 options::OPT_fno_memory_profile);
5040 if (MemProfArg &&
5041 !MemProfArg->getOption().matches(options::OPT_fno_memory_profile))
5042 MemProfArg->render(Args, CmdArgs);
5043
5044 if (auto *MemProfUseArg =
5045 Args.getLastArg(options::OPT_fmemory_profile_use_EQ)) {
5046 if (MemProfArg)
5047 D.Diag(diag::err_drv_argument_not_allowed_with)
5048 << MemProfUseArg->getAsString(Args) << MemProfArg->getAsString(Args);
5049 if (auto *PGOInstrArg = Args.getLastArg(options::OPT_fprofile_generate,
5050 options::OPT_fprofile_generate_EQ))
5051 D.Diag(diag::err_drv_argument_not_allowed_with)
5052 << MemProfUseArg->getAsString(Args) << PGOInstrArg->getAsString(Args);
5053 MemProfUseArg->render(Args, CmdArgs);
5054 }
5055
5056 // Embed-bitcode option.
5057 // Only white-listed flags below are allowed to be embedded.
5058 if (C.getDriver().embedBitcodeInObject() && !IsUsingLTO &&
5059 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
5060 // Add flags implied by -fembed-bitcode.
5061 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
5062 // Disable all llvm IR level optimizations.
5063 CmdArgs.push_back("-disable-llvm-passes");
5064
5065 // Render target options.
5066 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
5067
5068 // reject options that shouldn't be supported in bitcode
5069 // also reject kernel/kext
5070 static const constexpr unsigned kBitcodeOptionIgnorelist[] = {
5071 options::OPT_mkernel,
5072 options::OPT_fapple_kext,
5073 options::OPT_ffunction_sections,
5074 options::OPT_fno_function_sections,
5075 options::OPT_fdata_sections,
5076 options::OPT_fno_data_sections,
5077 options::OPT_fbasic_block_sections_EQ,
5078 options::OPT_funique_internal_linkage_names,
5079 options::OPT_fno_unique_internal_linkage_names,
5080 options::OPT_funique_section_names,
5081 options::OPT_fno_unique_section_names,
5082 options::OPT_funique_basic_block_section_names,
5083 options::OPT_fno_unique_basic_block_section_names,
5084 options::OPT_mrestrict_it,
5085 options::OPT_mno_restrict_it,
5086 options::OPT_mstackrealign,
5087 options::OPT_mno_stackrealign,
5088 options::OPT_mstack_alignment,
5089 options::OPT_mcmodel_EQ,
5090 options::OPT_mlong_calls,
5091 options::OPT_mno_long_calls,
5092 options::OPT_ggnu_pubnames,
5093 options::OPT_gdwarf_aranges,
5094 options::OPT_fdebug_types_section,
5095 options::OPT_fno_debug_types_section,
5096 options::OPT_fdwarf_directory_asm,
5097 options::OPT_fno_dwarf_directory_asm,
5098 options::OPT_mrelax_all,
5099 options::OPT_mno_relax_all,
5100 options::OPT_ftrap_function_EQ,
5101 options::OPT_ffixed_r9,
5102 options::OPT_mfix_cortex_a53_835769,
5103 options::OPT_mno_fix_cortex_a53_835769,
5104 options::OPT_ffixed_x18,
5105 options::OPT_mglobal_merge,
5106 options::OPT_mno_global_merge,
5107 options::OPT_mred_zone,
5108 options::OPT_mno_red_zone,
5109 options::OPT_Wa_COMMA,
5110 options::OPT_Xassembler,
5111 options::OPT_mllvm,
5112 };
5113 for (const auto &A : Args)
5114 if (llvm::is_contained(kBitcodeOptionIgnorelist, A->getOption().getID()))
5115 D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
5116
5117 // Render the CodeGen options that need to be passed.
5118 Args.addOptOutFlag(CmdArgs, options::OPT_foptimize_sibling_calls,
5119 options::OPT_fno_optimize_sibling_calls);
5120
5121 RenderFloatingPointOptions(TC, D, isOptimizationLevelFast(Args), Args,
5122 CmdArgs, JA);
5123
5124 // Render ABI arguments
5125 switch (TC.getArch()) {
5126 default: break;
5127 case llvm::Triple::arm:
5128 case llvm::Triple::armeb:
5129 case llvm::Triple::thumbeb:
5130 RenderARMABI(D, Triple, Args, CmdArgs);
5131 break;
5132 case llvm::Triple::aarch64:
5133 case llvm::Triple::aarch64_32:
5134 case llvm::Triple::aarch64_be:
5135 RenderAArch64ABI(Triple, Args, CmdArgs);
5136 break;
5137 }
5138
5139 // Optimization level for CodeGen.
5140 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
5141 if (A->getOption().matches(options::OPT_O4)) {
5142 CmdArgs.push_back("-O3");
5143 D.Diag(diag::warn_O4_is_O3);
5144 } else {
5145 A->render(Args, CmdArgs);
5146 }
5147 }
5148
5149 // Input/Output file.
5150 if (Output.getType() == types::TY_Dependencies) {
5151 // Handled with other dependency code.
5152 } else if (Output.isFilename()) {
5153 CmdArgs.push_back("-o");
5154 CmdArgs.push_back(Output.getFilename());
5155 } else {
5156 assert(Output.isNothing() && "Input output.");
5157 }
5158
5159 for (const auto &II : Inputs) {
5160 addDashXForInput(Args, II, CmdArgs);
5161 if (II.isFilename())
5162 CmdArgs.push_back(II.getFilename());
5163 else
5164 II.getInputArg().renderAsInput(Args, CmdArgs);
5165 }
5166
5167 C.addCommand(std::make_unique<Command>(
5168 JA, *this, ResponseFileSupport::AtFileUTF8(), D.getClangProgramPath(),
5169 CmdArgs, Inputs, Output, D.getPrependArg()));
5170 return;
5171 }
5172
5173 if (C.getDriver().embedBitcodeMarkerOnly() && !IsUsingLTO)
5174 CmdArgs.push_back("-fembed-bitcode=marker");
5175
5176 // We normally speed up the clang process a bit by skipping destructors at
5177 // exit, but when we're generating diagnostics we can rely on some of the
5178 // cleanup.
5179 if (!C.isForDiagnostics())
5180 CmdArgs.push_back("-disable-free");
5181 CmdArgs.push_back("-clear-ast-before-backend");
5182
5183 #ifdef NDEBUG
5184 const bool IsAssertBuild = false;
5185 #else
5186 const bool IsAssertBuild = true;
5187 #endif
5188
5189 // Disable the verification pass in asserts builds unless otherwise specified.
5190 if (Args.hasFlag(options::OPT_fno_verify_intermediate_code,
5191 options::OPT_fverify_intermediate_code, !IsAssertBuild)) {
5192 CmdArgs.push_back("-disable-llvm-verifier");
5193 }
5194
5195 // Discard value names in assert builds unless otherwise specified.
5196 if (Args.hasFlag(options::OPT_fdiscard_value_names,
5197 options::OPT_fno_discard_value_names, !IsAssertBuild)) {
5198 if (Args.hasArg(options::OPT_fdiscard_value_names) &&
5199 llvm::any_of(Inputs, [](const clang::driver::InputInfo &II) {
5200 return types::isLLVMIR(II.getType());
5201 })) {
5202 D.Diag(diag::warn_ignoring_fdiscard_for_bitcode);
5203 }
5204 CmdArgs.push_back("-discard-value-names");
5205 }
5206
5207 // Set the main file name, so that debug info works even with
5208 // -save-temps.
5209 CmdArgs.push_back("-main-file-name");
5210 CmdArgs.push_back(getBaseInputName(Args, Input));
5211
5212 // Some flags which affect the language (via preprocessor
5213 // defines).
5214 if (Args.hasArg(options::OPT_static))
5215 CmdArgs.push_back("-static-define");
5216
5217 if (Args.hasArg(options::OPT_municode))
5218 CmdArgs.push_back("-DUNICODE");
5219
5220 if (isa<AnalyzeJobAction>(JA))
5221 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
5222
5223 if (isa<AnalyzeJobAction>(JA) ||
5224 (isa<PreprocessJobAction>(JA) && Args.hasArg(options::OPT__analyze)))
5225 CmdArgs.push_back("-setup-static-analyzer");
5226
5227 // Enable compatilibily mode to avoid analyzer-config related errors.
5228 // Since we can't access frontend flags through hasArg, let's manually iterate
5229 // through them.
5230 bool FoundAnalyzerConfig = false;
5231 for (auto *Arg : Args.filtered(options::OPT_Xclang))
5232 if (StringRef(Arg->getValue()) == "-analyzer-config") {
5233 FoundAnalyzerConfig = true;
5234 break;
5235 }
5236 if (!FoundAnalyzerConfig)
5237 for (auto *Arg : Args.filtered(options::OPT_Xanalyzer))
5238 if (StringRef(Arg->getValue()) == "-analyzer-config") {
5239 FoundAnalyzerConfig = true;
5240 break;
5241 }
5242 if (FoundAnalyzerConfig)
5243 CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
5244
5245 CheckCodeGenerationOptions(D, Args);
5246
5247 unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
5248 assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
5249 if (FunctionAlignment) {
5250 CmdArgs.push_back("-function-alignment");
5251 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
5252 }
5253
5254 // We support -falign-loops=N where N is a power of 2. GCC supports more
5255 // forms.
5256 if (const Arg *A = Args.getLastArg(options::OPT_falign_loops_EQ)) {
5257 unsigned Value = 0;
5258 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
5259 TC.getDriver().Diag(diag::err_drv_invalid_int_value)
5260 << A->getAsString(Args) << A->getValue();
5261 else if (Value & (Value - 1))
5262 TC.getDriver().Diag(diag::err_drv_alignment_not_power_of_two)
5263 << A->getAsString(Args) << A->getValue();
5264 // Treat =0 as unspecified (use the target preference).
5265 if (Value)
5266 CmdArgs.push_back(Args.MakeArgString("-falign-loops=" +
5267 Twine(std::min(Value, 65536u))));
5268 }
5269
5270 if (Triple.isOSzOS()) {
5271 // On z/OS some of the system header feature macros need to
5272 // be defined to enable most cross platform projects to build
5273 // successfully. Ths include the libc++ library. A
5274 // complicating factor is that users can define these
5275 // macros to the same or different values. We need to add
5276 // the definition for these macros to the compilation command
5277 // if the user hasn't already defined them.
5278
5279 auto findMacroDefinition = [&](const std::string &Macro) {
5280 auto MacroDefs = Args.getAllArgValues(options::OPT_D);
5281 return llvm::any_of(MacroDefs, [&](const std::string &M) {
5282 return M == Macro || M.find(Macro + '=') != std::string::npos;
5283 });
5284 };
5285
5286 // _UNIX03_WITHDRAWN is required for libcxx & porting.
5287 if (!findMacroDefinition("_UNIX03_WITHDRAWN"))
5288 CmdArgs.push_back("-D_UNIX03_WITHDRAWN");
5289 // _OPEN_DEFAULT is required for XL compat
5290 if (!findMacroDefinition("_OPEN_DEFAULT"))
5291 CmdArgs.push_back("-D_OPEN_DEFAULT");
5292 if (D.CCCIsCXX() || types::isCXX(Input.getType())) {
5293 // _XOPEN_SOURCE=600 is required for libcxx.
5294 if (!findMacroDefinition("_XOPEN_SOURCE"))
5295 CmdArgs.push_back("-D_XOPEN_SOURCE=600");
5296 }
5297 }
5298
5299 llvm::Reloc::Model RelocationModel;
5300 unsigned PICLevel;
5301 bool IsPIE;
5302 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
5303 Arg *LastPICDataRelArg =
5304 Args.getLastArg(options::OPT_mno_pic_data_is_text_relative,
5305 options::OPT_mpic_data_is_text_relative);
5306 bool NoPICDataIsTextRelative = false;
5307 if (LastPICDataRelArg) {
5308 if (LastPICDataRelArg->getOption().matches(
5309 options::OPT_mno_pic_data_is_text_relative)) {
5310 NoPICDataIsTextRelative = true;
5311 if (!PICLevel)
5312 D.Diag(diag::err_drv_argument_only_allowed_with)
5313 << "-mno-pic-data-is-text-relative"
5314 << "-fpic/-fpie";
5315 }
5316 if (!Triple.isSystemZ())
5317 D.Diag(diag::err_drv_unsupported_opt_for_target)
5318 << (NoPICDataIsTextRelative ? "-mno-pic-data-is-text-relative"
5319 : "-mpic-data-is-text-relative")
5320 << RawTriple.str();
5321 }
5322
5323 bool IsROPI = RelocationModel == llvm::Reloc::ROPI ||
5324 RelocationModel == llvm::Reloc::ROPI_RWPI;
5325 bool IsRWPI = RelocationModel == llvm::Reloc::RWPI ||
5326 RelocationModel == llvm::Reloc::ROPI_RWPI;
5327
5328 if (Args.hasArg(options::OPT_mcmse) &&
5329 !Args.hasArg(options::OPT_fallow_unsupported)) {
5330 if (IsROPI)
5331 D.Diag(diag::err_cmse_pi_are_incompatible) << IsROPI;
5332 if (IsRWPI)
5333 D.Diag(diag::err_cmse_pi_are_incompatible) << !IsRWPI;
5334 }
5335
5336 if (IsROPI && types::isCXX(Input.getType()) &&
5337 !Args.hasArg(options::OPT_fallow_unsupported))
5338 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
5339
5340 const char *RMName = RelocationModelName(RelocationModel);
5341 if (RMName) {
5342 CmdArgs.push_back("-mrelocation-model");
5343 CmdArgs.push_back(RMName);
5344 }
5345 if (PICLevel > 0) {
5346 CmdArgs.push_back("-pic-level");
5347 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
5348 if (IsPIE)
5349 CmdArgs.push_back("-pic-is-pie");
5350 if (NoPICDataIsTextRelative)
5351 CmdArgs.push_back("-mcmodel=medium");
5352 }
5353
5354 if (RelocationModel == llvm::Reloc::ROPI ||
5355 RelocationModel == llvm::Reloc::ROPI_RWPI)
5356 CmdArgs.push_back("-fropi");
5357 if (RelocationModel == llvm::Reloc::RWPI ||
5358 RelocationModel == llvm::Reloc::ROPI_RWPI)
5359 CmdArgs.push_back("-frwpi");
5360
5361 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
5362 CmdArgs.push_back("-meabi");
5363 CmdArgs.push_back(A->getValue());
5364 }
5365
5366 // -fsemantic-interposition is forwarded to CC1: set the
5367 // "SemanticInterposition" metadata to 1 (make some linkages interposable) and
5368 // make default visibility external linkage definitions dso_preemptable.
5369 //
5370 // -fno-semantic-interposition: if the target supports .Lfoo$local local
5371 // aliases (make default visibility external linkage definitions dso_local).
5372 // This is the CC1 default for ELF to match COFF/Mach-O.
5373 //
5374 // Otherwise use Clang's traditional behavior: like
5375 // -fno-semantic-interposition but local aliases are not used. So references
5376 // can be interposed if not optimized out.
5377 if (Triple.isOSBinFormatELF()) {
5378 Arg *A = Args.getLastArg(options::OPT_fsemantic_interposition,
5379 options::OPT_fno_semantic_interposition);
5380 if (RelocationModel != llvm::Reloc::Static && !IsPIE) {
5381 // The supported targets need to call AsmPrinter::getSymbolPreferLocal.
5382 bool SupportsLocalAlias =
5383 Triple.isAArch64() || Triple.isRISCV() || Triple.isX86();
5384 if (!A)
5385 CmdArgs.push_back("-fhalf-no-semantic-interposition");
5386 else if (A->getOption().matches(options::OPT_fsemantic_interposition))
5387 A->render(Args, CmdArgs);
5388 else if (!SupportsLocalAlias)
5389 CmdArgs.push_back("-fhalf-no-semantic-interposition");
5390 }
5391 }
5392
5393 {
5394 std::string Model;
5395 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
5396 if (!TC.isThreadModelSupported(A->getValue()))
5397 D.Diag(diag::err_drv_invalid_thread_model_for_target)
5398 << A->getValue() << A->getAsString(Args);
5399 Model = A->getValue();
5400 } else
5401 Model = TC.getThreadModel();
5402 if (Model != "posix") {
5403 CmdArgs.push_back("-mthread-model");
5404 CmdArgs.push_back(Args.MakeArgString(Model));
5405 }
5406 }
5407
5408 if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
5409 StringRef Name = A->getValue();
5410 if (Name == "SVML") {
5411 if (Triple.getArch() != llvm::Triple::x86 &&
5412 Triple.getArch() != llvm::Triple::x86_64)
5413 D.Diag(diag::err_drv_unsupported_opt_for_target)
5414 << Name << Triple.getArchName();
5415 } else if (Name == "LIBMVEC-X86") {
5416 if (Triple.getArch() != llvm::Triple::x86 &&
5417 Triple.getArch() != llvm::Triple::x86_64)
5418 D.Diag(diag::err_drv_unsupported_opt_for_target)
5419 << Name << Triple.getArchName();
5420 } else if (Name == "SLEEF" || Name == "ArmPL") {
5421 if (Triple.getArch() != llvm::Triple::aarch64 &&
5422 Triple.getArch() != llvm::Triple::aarch64_be)
5423 D.Diag(diag::err_drv_unsupported_opt_for_target)
5424 << Name << Triple.getArchName();
5425 }
5426 A->render(Args, CmdArgs);
5427 }
5428
5429 if (Args.hasFlag(options::OPT_fmerge_all_constants,
5430 options::OPT_fno_merge_all_constants, false))
5431 CmdArgs.push_back("-fmerge-all-constants");
5432
5433 Args.addOptOutFlag(CmdArgs, options::OPT_fdelete_null_pointer_checks,
5434 options::OPT_fno_delete_null_pointer_checks);
5435
5436 // LLVM Code Generator Options.
5437
5438 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ_quadword_atomics)) {
5439 if (!Triple.isOSAIX() || Triple.isPPC32())
5440 D.Diag(diag::err_drv_unsupported_opt_for_target)
5441 << A->getSpelling() << RawTriple.str();
5442 CmdArgs.push_back("-mabi=quadword-atomics");
5443 }
5444
5445 if (Arg *A = Args.getLastArg(options::OPT_mlong_double_128)) {
5446 // Emit the unsupported option error until the Clang's library integration
5447 // support for 128-bit long double is available for AIX.
5448 if (Triple.isOSAIX())
5449 D.Diag(diag::err_drv_unsupported_opt_for_target)
5450 << A->getSpelling() << RawTriple.str();
5451 }
5452
5453 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
5454 StringRef V = A->getValue(), V1 = V;
5455 unsigned Size;
5456 if (V1.consumeInteger(10, Size) || !V1.empty())
5457 D.Diag(diag::err_drv_invalid_argument_to_option)
5458 << V << A->getOption().getName();
5459 else
5460 CmdArgs.push_back(Args.MakeArgString("-fwarn-stack-size=" + V));
5461 }
5462
5463 Args.addOptOutFlag(CmdArgs, options::OPT_fjump_tables,
5464 options::OPT_fno_jump_tables);
5465 Args.addOptInFlag(CmdArgs, options::OPT_fprofile_sample_accurate,
5466 options::OPT_fno_profile_sample_accurate);
5467 Args.addOptOutFlag(CmdArgs, options::OPT_fpreserve_as_comments,
5468 options::OPT_fno_preserve_as_comments);
5469
5470 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
5471 CmdArgs.push_back("-mregparm");
5472 CmdArgs.push_back(A->getValue());
5473 }
5474
5475 if (Arg *A = Args.getLastArg(options::OPT_maix_struct_return,
5476 options::OPT_msvr4_struct_return)) {
5477 if (!TC.getTriple().isPPC32()) {
5478 D.Diag(diag::err_drv_unsupported_opt_for_target)
5479 << A->getSpelling() << RawTriple.str();
5480 } else if (A->getOption().matches(options::OPT_maix_struct_return)) {
5481 CmdArgs.push_back("-maix-struct-return");
5482 } else {
5483 assert(A->getOption().matches(options::OPT_msvr4_struct_return));
5484 CmdArgs.push_back("-msvr4-struct-return");
5485 }
5486 }
5487
5488 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
5489 options::OPT_freg_struct_return)) {
5490 if (TC.getArch() != llvm::Triple::x86) {
5491 D.Diag(diag::err_drv_unsupported_opt_for_target)
5492 << A->getSpelling() << RawTriple.str();
5493 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
5494 CmdArgs.push_back("-fpcc-struct-return");
5495 } else {
5496 assert(A->getOption().matches(options::OPT_freg_struct_return));
5497 CmdArgs.push_back("-freg-struct-return");
5498 }
5499 }
5500
5501 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false)) {
5502 if (Triple.getArch() == llvm::Triple::m68k)
5503 CmdArgs.push_back("-fdefault-calling-conv=rtdcall");
5504 else
5505 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
5506 }
5507
5508 if (Args.hasArg(options::OPT_fenable_matrix)) {
5509 // enable-matrix is needed by both the LangOpts and by LLVM.
5510 CmdArgs.push_back("-fenable-matrix");
5511 CmdArgs.push_back("-mllvm");
5512 CmdArgs.push_back("-enable-matrix");
5513 }
5514
5515 CodeGenOptions::FramePointerKind FPKeepKind =
5516 getFramePointerKind(Args, RawTriple);
5517 const char *FPKeepKindStr = nullptr;
5518 switch (FPKeepKind) {
5519 case CodeGenOptions::FramePointerKind::None:
5520 FPKeepKindStr = "-mframe-pointer=none";
5521 break;
5522 case CodeGenOptions::FramePointerKind::NonLeaf:
5523 FPKeepKindStr = "-mframe-pointer=non-leaf";
5524 break;
5525 case CodeGenOptions::FramePointerKind::All:
5526 FPKeepKindStr = "-mframe-pointer=all";
5527 break;
5528 }
5529 assert(FPKeepKindStr && "unknown FramePointerKind");
5530 CmdArgs.push_back(FPKeepKindStr);
5531
5532 Args.addOptOutFlag(CmdArgs, options::OPT_fzero_initialized_in_bss,
5533 options::OPT_fno_zero_initialized_in_bss);
5534
5535 bool OFastEnabled = isOptimizationLevelFast(Args);
5536 // If -Ofast is the optimization level, then -fstrict-aliasing should be
5537 // enabled. This alias option is being used to simplify the hasFlag logic.
5538 OptSpecifier StrictAliasingAliasOption =
5539 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
5540 // We turn strict aliasing off by default if we're in CL mode, since MSVC
5541 // doesn't do any TBAA.
5542 bool TBAAOnByDefault = !D.IsCLMode();
5543 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
5544 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
5545 CmdArgs.push_back("-relaxed-aliasing");
5546 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
5547 options::OPT_fno_struct_path_tbaa, true))
5548 CmdArgs.push_back("-no-struct-path-tbaa");
5549 Args.addOptInFlag(CmdArgs, options::OPT_fstrict_enums,
5550 options::OPT_fno_strict_enums);
5551 Args.addOptOutFlag(CmdArgs, options::OPT_fstrict_return,
5552 options::OPT_fno_strict_return);
5553 Args.addOptInFlag(CmdArgs, options::OPT_fallow_editor_placeholders,
5554 options::OPT_fno_allow_editor_placeholders);
5555 Args.addOptInFlag(CmdArgs, options::OPT_fstrict_vtable_pointers,
5556 options::OPT_fno_strict_vtable_pointers);
5557 Args.addOptInFlag(CmdArgs, options::OPT_fforce_emit_vtables,
5558 options::OPT_fno_force_emit_vtables);
5559 Args.addOptOutFlag(CmdArgs, options::OPT_foptimize_sibling_calls,
5560 options::OPT_fno_optimize_sibling_calls);
5561 Args.addOptOutFlag(CmdArgs, options::OPT_fescaping_block_tail_calls,
5562 options::OPT_fno_escaping_block_tail_calls);
5563
5564 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
5565 options::OPT_fno_fine_grained_bitfield_accesses);
5566
5567 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_relative_cxx_abi_vtables,
5568 options::OPT_fno_experimental_relative_cxx_abi_vtables);
5569
5570 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_omit_vtable_rtti,
5571 options::OPT_fno_experimental_omit_vtable_rtti);
5572
5573 // Handle segmented stacks.
5574 Args.addOptInFlag(CmdArgs, options::OPT_fsplit_stack,
5575 options::OPT_fno_split_stack);
5576
5577 // -fprotect-parens=0 is default.
5578 if (Args.hasFlag(options::OPT_fprotect_parens,
5579 options::OPT_fno_protect_parens, false))
5580 CmdArgs.push_back("-fprotect-parens");
5581
5582 RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs, JA);
5583
5584 if (Arg *A = Args.getLastArg(options::OPT_fextend_args_EQ)) {
5585 const llvm::Triple::ArchType Arch = TC.getArch();
5586 if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
5587 StringRef V = A->getValue();
5588 if (V == "64")
5589 CmdArgs.push_back("-fextend-arguments=64");
5590 else if (V != "32")
5591 D.Diag(diag::err_drv_invalid_argument_to_option)
5592 << A->getValue() << A->getOption().getName();
5593 } else
5594 D.Diag(diag::err_drv_unsupported_opt_for_target)
5595 << A->getOption().getName() << TripleStr;
5596 }
5597
5598 if (Arg *A = Args.getLastArg(options::OPT_mdouble_EQ)) {
5599 if (TC.getArch() == llvm::Triple::avr)
5600 A->render(Args, CmdArgs);
5601 else
5602 D.Diag(diag::err_drv_unsupported_opt_for_target)
5603 << A->getAsString(Args) << TripleStr;
5604 }
5605
5606 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) {
5607 if (TC.getTriple().isX86())
5608 A->render(Args, CmdArgs);
5609 else if (TC.getTriple().isPPC() &&
5610 (A->getOption().getID() != options::OPT_mlong_double_80))
5611 A->render(Args, CmdArgs);
5612 else
5613 D.Diag(diag::err_drv_unsupported_opt_for_target)
5614 << A->getAsString(Args) << TripleStr;
5615 }
5616
5617 // Decide whether to use verbose asm. Verbose assembly is the default on
5618 // toolchains which have the integrated assembler on by default.
5619 bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
5620 if (!Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
5621 IsIntegratedAssemblerDefault))
5622 CmdArgs.push_back("-fno-verbose-asm");
5623
5624 // Parse 'none' or '$major.$minor'. Disallow -fbinutils-version=0 because we
5625 // use that to indicate the MC default in the backend.
5626 if (Arg *A = Args.getLastArg(options::OPT_fbinutils_version_EQ)) {
5627 StringRef V = A->getValue();
5628 unsigned Num;
5629 if (V == "none")
5630 A->render(Args, CmdArgs);
5631 else if (!V.consumeInteger(10, Num) && Num > 0 &&
5632 (V.empty() || (V.consume_front(".") &&
5633 !V.consumeInteger(10, Num) && V.empty())))
5634 A->render(Args, CmdArgs);
5635 else
5636 D.Diag(diag::err_drv_invalid_argument_to_option)
5637 << A->getValue() << A->getOption().getName();
5638 }
5639
5640 // If toolchain choose to use MCAsmParser for inline asm don't pass the
5641 // option to disable integrated-as explictly.
5642 if (!TC.useIntegratedAs() && !TC.parseInlineAsmUsingAsmParser())
5643 CmdArgs.push_back("-no-integrated-as");
5644
5645 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
5646 CmdArgs.push_back("-mdebug-pass");
5647 CmdArgs.push_back("Structure");
5648 }
5649 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
5650 CmdArgs.push_back("-mdebug-pass");
5651 CmdArgs.push_back("Arguments");
5652 }
5653
5654 // Enable -mconstructor-aliases except on darwin, where we have to work around
5655 // a linker bug (see https://openradar.appspot.com/7198997), and CUDA device
5656 // code, where aliases aren't supported.
5657 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
5658 CmdArgs.push_back("-mconstructor-aliases");
5659
5660 // Darwin's kernel doesn't support guard variables; just die if we
5661 // try to use them.
5662 if (KernelOrKext && RawTriple.isOSDarwin())
5663 CmdArgs.push_back("-fforbid-guard-variables");
5664
5665 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
5666 Triple.isWindowsGNUEnvironment())) {
5667 CmdArgs.push_back("-mms-bitfields");
5668 }
5669
5670 if (Triple.isWindowsGNUEnvironment()) {
5671 Args.addOptOutFlag(CmdArgs, options::OPT_fauto_import,
5672 options::OPT_fno_auto_import);
5673 }
5674
5675 if (Args.hasFlag(options::OPT_fms_volatile, options::OPT_fno_ms_volatile,
5676 Triple.isX86() && D.IsCLMode()))
5677 CmdArgs.push_back("-fms-volatile");
5678
5679 // Non-PIC code defaults to -fdirect-access-external-data while PIC code
5680 // defaults to -fno-direct-access-external-data. Pass the option if different
5681 // from the default.
5682 if (Arg *A = Args.getLastArg(options::OPT_fdirect_access_external_data,
5683 options::OPT_fno_direct_access_external_data)) {
5684 if (A->getOption().matches(options::OPT_fdirect_access_external_data) !=
5685 (PICLevel == 0))
5686 A->render(Args, CmdArgs);
5687 } else if (PICLevel == 0 && Triple.isLoongArch()) {
5688 // Some targets default to -fno-direct-access-external-data even for
5689 // -fno-pic.
5690 CmdArgs.push_back("-fno-direct-access-external-data");
5691 }
5692
5693 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
5694 CmdArgs.push_back("-fno-plt");
5695 }
5696
5697 // -fhosted is default.
5698 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
5699 // use Freestanding.
5700 bool Freestanding =
5701 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
5702 KernelOrKext;
5703 if (Freestanding)
5704 CmdArgs.push_back("-ffreestanding");
5705
5706 Args.AddLastArg(CmdArgs, options::OPT_fno_knr_functions);
5707
5708 // This is a coarse approximation of what llvm-gcc actually does, both
5709 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
5710 // complicated ways.
5711 auto SanitizeArgs = TC.getSanitizerArgs(Args);
5712
5713 bool IsAsyncUnwindTablesDefault =
5714 TC.getDefaultUnwindTableLevel(Args) == ToolChain::UnwindTableLevel::Asynchronous;
5715 bool IsSyncUnwindTablesDefault =
5716 TC.getDefaultUnwindTableLevel(Args) == ToolChain::UnwindTableLevel::Synchronous;
5717
5718 bool AsyncUnwindTables = Args.hasFlag(
5719 options::OPT_fasynchronous_unwind_tables,
5720 options::OPT_fno_asynchronous_unwind_tables,
5721 (IsAsyncUnwindTablesDefault || SanitizeArgs.needsUnwindTables()) &&
5722 !Freestanding);
5723 bool UnwindTables =
5724 Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
5725 IsSyncUnwindTablesDefault && !Freestanding);
5726 if (AsyncUnwindTables)
5727 CmdArgs.push_back("-funwind-tables=2");
5728 else if (UnwindTables)
5729 CmdArgs.push_back("-funwind-tables=1");
5730
5731 // Prepare `-aux-target-cpu` and `-aux-target-feature` unless
5732 // `--gpu-use-aux-triple-only` is specified.
5733 if (!Args.getLastArg(options::OPT_gpu_use_aux_triple_only) &&
5734 (IsCudaDevice || IsHIPDevice)) {
5735 const ArgList &HostArgs =
5736 C.getArgsForToolChain(nullptr, StringRef(), Action::OFK_None);
5737 std::string HostCPU =
5738 getCPUName(D, HostArgs, *TC.getAuxTriple(), /*FromAs*/ false);
5739 if (!HostCPU.empty()) {
5740 CmdArgs.push_back("-aux-target-cpu");
5741 CmdArgs.push_back(Args.MakeArgString(HostCPU));
5742 }
5743 getTargetFeatures(D, *TC.getAuxTriple(), HostArgs, CmdArgs,
5744 /*ForAS*/ false, /*IsAux*/ true);
5745 }
5746
5747 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
5748
5749 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
5750 StringRef CM = A->getValue();
5751 bool Ok = false;
5752 if (Triple.isOSAIX() && CM == "medium")
5753 CM = "large";
5754 if (Triple.isAArch64(64)) {
5755 Ok = CM == "tiny" || CM == "small" || CM == "large";
5756 if (CM == "large" && RelocationModel != llvm::Reloc::Static)
5757 D.Diag(diag::err_drv_argument_only_allowed_with)
5758 << A->getAsString(Args) << "-fno-pic";
5759 } else if (Triple.isLoongArch()) {
5760 if (CM == "extreme" &&
5761 Args.hasFlagNoClaim(options::OPT_fplt, options::OPT_fno_plt, false))
5762 D.Diag(diag::err_drv_argument_not_allowed_with)
5763 << A->getAsString(Args) << "-fplt";
5764 Ok = CM == "normal" || CM == "medium" || CM == "extreme";
5765 // Convert to LLVM recognizable names.
5766 if (Ok)
5767 CM = llvm::StringSwitch<StringRef>(CM)
5768 .Case("normal", "small")
5769 .Case("extreme", "large")
5770 .Default(CM);
5771 } else if (Triple.isPPC64() || Triple.isOSAIX()) {
5772 Ok = CM == "small" || CM == "medium" || CM == "large";
5773 } else if (Triple.isRISCV()) {
5774 if (CM == "medlow")
5775 CM = "small";
5776 else if (CM == "medany")
5777 CM = "medium";
5778 Ok = CM == "small" || CM == "medium";
5779 } else if (Triple.getArch() == llvm::Triple::x86_64) {
5780 Ok = llvm::is_contained({"small", "kernel", "medium", "large", "tiny"},
5781 CM);
5782 } else if (Triple.isNVPTX() || Triple.isAMDGPU()) {
5783 // NVPTX/AMDGPU does not care about the code model and will accept
5784 // whatever works for the host.
5785 Ok = true;
5786 } else if (Triple.isSPARC64()) {
5787 if (CM == "medlow")
5788 CM = "small";
5789 else if (CM == "medmid")
5790 CM = "medium";
5791 else if (CM == "medany")
5792 CM = "large";
5793 Ok = CM == "small" || CM == "medium" || CM == "large";
5794 }
5795 if (Ok) {
5796 CmdArgs.push_back(Args.MakeArgString("-mcmodel=" + CM));
5797 } else {
5798 D.Diag(diag::err_drv_unsupported_option_argument_for_target)
5799 << A->getSpelling() << CM << TripleStr;
5800 }
5801 }
5802
5803 if (Triple.getArch() == llvm::Triple::x86_64) {
5804 bool IsMediumCM = false;
5805 bool IsLargeCM = false;
5806 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
5807 IsMediumCM = StringRef(A->getValue()) == "medium";
5808 IsLargeCM = StringRef(A->getValue()) == "large";
5809 }
5810 if (Arg *A = Args.getLastArg(options::OPT_mlarge_data_threshold_EQ)) {
5811 if (!IsMediumCM && !IsLargeCM) {
5812 D.Diag(diag::warn_drv_large_data_threshold_invalid_code_model)
5813 << A->getOption().getRenderName();
5814 } else {
5815 A->render(Args, CmdArgs);
5816 }
5817 } else if (IsMediumCM) {
5818 CmdArgs.push_back("-mlarge-data-threshold=65536");
5819 } else if (IsLargeCM) {
5820 CmdArgs.push_back("-mlarge-data-threshold=0");
5821 }
5822 }
5823
5824 if (Arg *A = Args.getLastArg(options::OPT_mtls_size_EQ)) {
5825 StringRef Value = A->getValue();
5826 unsigned TLSSize = 0;
5827 Value.getAsInteger(10, TLSSize);
5828 if (!Triple.isAArch64() || !Triple.isOSBinFormatELF())
5829 D.Diag(diag::err_drv_unsupported_opt_for_target)
5830 << A->getOption().getName() << TripleStr;
5831 if (TLSSize != 12 && TLSSize != 24 && TLSSize != 32 && TLSSize != 48)
5832 D.Diag(diag::err_drv_invalid_int_value)
5833 << A->getOption().getName() << Value;
5834 Args.AddLastArg(CmdArgs, options::OPT_mtls_size_EQ);
5835 }
5836
5837 if (isTLSDESCEnabled(TC, Args))
5838 CmdArgs.push_back("-enable-tlsdesc");
5839
5840 // Add the target cpu
5841 std::string CPU = getCPUName(D, Args, Triple, /*FromAs*/ false);
5842 if (!CPU.empty()) {
5843 CmdArgs.push_back("-target-cpu");
5844 CmdArgs.push_back(Args.MakeArgString(CPU));
5845 }
5846
5847 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
5848
5849 // Add clang-cl arguments.
5850 types::ID InputType = Input.getType();
5851 if (D.IsCLMode())
5852 AddClangCLArgs(Args, InputType, CmdArgs);
5853
5854 llvm::codegenoptions::DebugInfoKind DebugInfoKind =
5855 llvm::codegenoptions::NoDebugInfo;
5856 DwarfFissionKind DwarfFission = DwarfFissionKind::None;
5857 renderDebugOptions(TC, D, RawTriple, Args, types::isLLVMIR(InputType),
5858 CmdArgs, Output, DebugInfoKind, DwarfFission);
5859
5860 // Add the split debug info name to the command lines here so we
5861 // can propagate it to the backend.
5862 bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
5863 (TC.getTriple().isOSBinFormatELF() ||
5864 TC.getTriple().isOSBinFormatWasm() ||
5865 TC.getTriple().isOSBinFormatCOFF()) &&
5866 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
5867 isa<BackendJobAction>(JA));
5868 if (SplitDWARF) {
5869 const char *SplitDWARFOut = SplitDebugName(JA, Args, Input, Output);
5870 CmdArgs.push_back("-split-dwarf-file");
5871 CmdArgs.push_back(SplitDWARFOut);
5872 if (DwarfFission == DwarfFissionKind::Split) {
5873 CmdArgs.push_back("-split-dwarf-output");
5874 CmdArgs.push_back(SplitDWARFOut);
5875 }
5876 }
5877
5878 // Pass the linker version in use.
5879 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
5880 CmdArgs.push_back("-target-linker-version");
5881 CmdArgs.push_back(A->getValue());
5882 }
5883
5884 // Explicitly error on some things we know we don't support and can't just
5885 // ignore.
5886 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
5887 Arg *Unsupported;
5888 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
5889 TC.getArch() == llvm::Triple::x86) {
5890 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
5891 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
5892 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
5893 << Unsupported->getOption().getName();
5894 }
5895 // The faltivec option has been superseded by the maltivec option.
5896 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
5897 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
5898 << Unsupported->getOption().getName()
5899 << "please use -maltivec and include altivec.h explicitly";
5900 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
5901 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
5902 << Unsupported->getOption().getName() << "please use -mno-altivec";
5903 }
5904
5905 Args.AddAllArgs(CmdArgs, options::OPT_v);
5906
5907 if (Args.getLastArg(options::OPT_H)) {
5908 CmdArgs.push_back("-H");
5909 CmdArgs.push_back("-sys-header-deps");
5910 }
5911 Args.AddAllArgs(CmdArgs, options::OPT_fshow_skipped_includes);
5912
5913 if (D.CCPrintHeadersFormat && !D.CCGenDiagnostics) {
5914 CmdArgs.push_back("-header-include-file");
5915 CmdArgs.push_back(!D.CCPrintHeadersFilename.empty()
5916 ? D.CCPrintHeadersFilename.c_str()
5917 : "-");
5918 CmdArgs.push_back("-sys-header-deps");
5919 CmdArgs.push_back(Args.MakeArgString(
5920 "-header-include-format=" +
5921 std::string(headerIncludeFormatKindToString(D.CCPrintHeadersFormat))));
5922 CmdArgs.push_back(
5923 Args.MakeArgString("-header-include-filtering=" +
5924 std::string(headerIncludeFilteringKindToString(
5925 D.CCPrintHeadersFiltering))));
5926 }
5927 Args.AddLastArg(CmdArgs, options::OPT_P);
5928 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
5929
5930 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
5931 CmdArgs.push_back("-diagnostic-log-file");
5932 CmdArgs.push_back(!D.CCLogDiagnosticsFilename.empty()
5933 ? D.CCLogDiagnosticsFilename.c_str()
5934 : "-");
5935 }
5936
5937 // Give the gen diagnostics more chances to succeed, by avoiding intentional
5938 // crashes.
5939 if (D.CCGenDiagnostics)
5940 CmdArgs.push_back("-disable-pragma-debug-crash");
5941
5942 // Allow backend to put its diagnostic files in the same place as frontend
5943 // crash diagnostics files.
5944 if (Args.hasArg(options::OPT_fcrash_diagnostics_dir)) {
5945 StringRef Dir = Args.getLastArgValue(options::OPT_fcrash_diagnostics_dir);
5946 CmdArgs.push_back("-mllvm");
5947 CmdArgs.push_back(Args.MakeArgString("-crash-diagnostics-dir=" + Dir));
5948 }
5949
5950 bool UseSeparateSections = isUseSeparateSections(Triple);
5951
5952 if (Args.hasFlag(options::OPT_ffunction_sections,
5953 options::OPT_fno_function_sections, UseSeparateSections)) {
5954 CmdArgs.push_back("-ffunction-sections");
5955 }
5956
5957 if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_sections_EQ)) {
5958 StringRef Val = A->getValue();
5959 if (Triple.isX86() && Triple.isOSBinFormatELF()) {
5960 if (Val != "all" && Val != "labels" && Val != "none" &&
5961 !Val.starts_with("list="))
5962 D.Diag(diag::err_drv_invalid_value)
5963 << A->getAsString(Args) << A->getValue();
5964 else
5965 A->render(Args, CmdArgs);
5966 } else if (Triple.isNVPTX()) {
5967 // Do not pass the option to the GPU compilation. We still want it enabled
5968 // for the host-side compilation, so seeing it here is not an error.
5969 } else if (Val != "none") {
5970 // =none is allowed everywhere. It's useful for overriding the option
5971 // and is the same as not specifying the option.
5972 D.Diag(diag::err_drv_unsupported_opt_for_target)
5973 << A->getAsString(Args) << TripleStr;
5974 }
5975 }
5976
5977 bool HasDefaultDataSections = Triple.isOSBinFormatXCOFF();
5978 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
5979 UseSeparateSections || HasDefaultDataSections)) {
5980 CmdArgs.push_back("-fdata-sections");
5981 }
5982
5983 Args.addOptOutFlag(CmdArgs, options::OPT_funique_section_names,
5984 options::OPT_fno_unique_section_names);
5985 Args.addOptInFlag(CmdArgs, options::OPT_funique_internal_linkage_names,
5986 options::OPT_fno_unique_internal_linkage_names);
5987 Args.addOptInFlag(CmdArgs, options::OPT_funique_basic_block_section_names,
5988 options::OPT_fno_unique_basic_block_section_names);
5989 Args.addOptInFlag(CmdArgs, options::OPT_fconvergent_functions,
5990 options::OPT_fno_convergent_functions);
5991
5992 if (Arg *A = Args.getLastArg(options::OPT_fsplit_machine_functions,
5993 options::OPT_fno_split_machine_functions)) {
5994 if (!A->getOption().matches(options::OPT_fno_split_machine_functions)) {
5995 // This codegen pass is only available on x86 and AArch64 ELF targets.
5996 if ((Triple.isX86() || Triple.isAArch64()) && Triple.isOSBinFormatELF())
5997 A->render(Args, CmdArgs);
5998 else
5999 D.Diag(diag::err_drv_unsupported_opt_for_target)
6000 << A->getAsString(Args) << TripleStr;
6001 }
6002 }
6003
6004 Args.AddLastArg(CmdArgs, options::OPT_finstrument_functions,
6005 options::OPT_finstrument_functions_after_inlining,
6006 options::OPT_finstrument_function_entry_bare);
6007
6008 // NVPTX/AMDGCN doesn't support PGO or coverage. There's no runtime support
6009 // for sampling, overhead of call arc collection is way too high and there's
6010 // no way to collect the output.
6011 if (!Triple.isNVPTX() && !Triple.isAMDGCN())
6012 addPGOAndCoverageFlags(TC, C, JA, Output, Args, SanitizeArgs, CmdArgs);
6013
6014 Args.AddLastArg(CmdArgs, options::OPT_fclang_abi_compat_EQ);
6015
6016 if (getLastProfileSampleUseArg(Args) &&
6017 Args.hasArg(options::OPT_fsample_profile_use_profi)) {
6018 CmdArgs.push_back("-mllvm");
6019 CmdArgs.push_back("-sample-profile-use-profi");
6020 }
6021
6022 // Add runtime flag for PS4/PS5 when PGO, coverage, or sanitizers are enabled.
6023 if (RawTriple.isPS() &&
6024 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
6025 PScpu::addProfileRTArgs(TC, Args, CmdArgs);
6026 PScpu::addSanitizerArgs(TC, Args, CmdArgs);
6027 }
6028
6029 // Pass options for controlling the default header search paths.
6030 if (Args.hasArg(options::OPT_nostdinc)) {
6031 CmdArgs.push_back("-nostdsysteminc");
6032 CmdArgs.push_back("-nobuiltininc");
6033 } else {
6034 if (Args.hasArg(options::OPT_nostdlibinc))
6035 CmdArgs.push_back("-nostdsysteminc");
6036 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
6037 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
6038 }
6039
6040 // Pass the path to compiler resource files.
6041 CmdArgs.push_back("-resource-dir");
6042 CmdArgs.push_back(D.ResourceDir.c_str());
6043
6044 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
6045
6046 RenderARCMigrateToolOptions(D, Args, CmdArgs);
6047
6048 // Add preprocessing options like -I, -D, etc. if we are using the
6049 // preprocessor.
6050 //
6051 // FIXME: Support -fpreprocessed
6052 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
6053 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
6054
6055 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
6056 // that "The compiler can only warn and ignore the option if not recognized".
6057 // When building with ccache, it will pass -D options to clang even on
6058 // preprocessed inputs and configure concludes that -fPIC is not supported.
6059 Args.ClaimAllArgs(options::OPT_D);
6060
6061 // Manually translate -O4 to -O3; let clang reject others.
6062 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
6063 if (A->getOption().matches(options::OPT_O4)) {
6064 CmdArgs.push_back("-O3");
6065 D.Diag(diag::warn_O4_is_O3);
6066 } else {
6067 A->render(Args, CmdArgs);
6068 }
6069 }
6070
6071 // Warn about ignored options to clang.
6072 for (const Arg *A :
6073 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
6074 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
6075 A->claim();
6076 }
6077
6078 for (const Arg *A :
6079 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
6080 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
6081 A->claim();
6082 }
6083
6084 claimNoWarnArgs(Args);
6085
6086 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
6087
6088 for (const Arg *A :
6089 Args.filtered(options::OPT_W_Group, options::OPT__SLASH_wd)) {
6090 A->claim();
6091 if (A->getOption().getID() == options::OPT__SLASH_wd) {
6092 unsigned WarningNumber;
6093 if (StringRef(A->getValue()).getAsInteger(10, WarningNumber)) {
6094 D.Diag(diag::err_drv_invalid_int_value)
6095 << A->getAsString(Args) << A->getValue();
6096 continue;
6097 }
6098
6099 if (auto Group = diagGroupFromCLWarningID(WarningNumber)) {
6100 CmdArgs.push_back(Args.MakeArgString(
6101 "-Wno-" + DiagnosticIDs::getWarningOptionForGroup(*Group)));
6102 }
6103 continue;
6104 }
6105 A->render(Args, CmdArgs);
6106 }
6107
6108 Args.AddAllArgs(CmdArgs, options::OPT_Wsystem_headers_in_module_EQ);
6109
6110 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
6111 CmdArgs.push_back("-pedantic");
6112 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
6113 Args.AddLastArg(CmdArgs, options::OPT_w);
6114
6115 Args.addOptInFlag(CmdArgs, options::OPT_ffixed_point,
6116 options::OPT_fno_fixed_point);
6117
6118 if (Arg *A = Args.getLastArg(options::OPT_fcxx_abi_EQ))
6119 A->render(Args, CmdArgs);
6120
6121 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_relative_cxx_abi_vtables,
6122 options::OPT_fno_experimental_relative_cxx_abi_vtables);
6123
6124 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_omit_vtable_rtti,
6125 options::OPT_fno_experimental_omit_vtable_rtti);
6126
6127 if (Arg *A = Args.getLastArg(options::OPT_ffuchsia_api_level_EQ))
6128 A->render(Args, CmdArgs);
6129
6130 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
6131 // (-ansi is equivalent to -std=c89 or -std=c++98).
6132 //
6133 // If a std is supplied, only add -trigraphs if it follows the
6134 // option.
6135 bool ImplyVCPPCVer = false;
6136 bool ImplyVCPPCXXVer = false;
6137 const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
6138 if (Std) {
6139 if (Std->getOption().matches(options::OPT_ansi))
6140 if (types::isCXX(InputType))
6141 CmdArgs.push_back("-std=c++98");
6142 else
6143 CmdArgs.push_back("-std=c89");
6144 else
6145 Std->render(Args, CmdArgs);
6146
6147 // If -f(no-)trigraphs appears after the language standard flag, honor it.
6148 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
6149 options::OPT_ftrigraphs,
6150 options::OPT_fno_trigraphs))
6151 if (A != Std)
6152 A->render(Args, CmdArgs);
6153 } else {
6154 // Honor -std-default.
6155 //
6156 // FIXME: Clang doesn't correctly handle -std= when the input language
6157 // doesn't match. For the time being just ignore this for C++ inputs;
6158 // eventually we want to do all the standard defaulting here instead of
6159 // splitting it between the driver and clang -cc1.
6160 if (!types::isCXX(InputType)) {
6161 if (!Args.hasArg(options::OPT__SLASH_std)) {
6162 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
6163 /*Joined=*/true);
6164 } else
6165 ImplyVCPPCVer = true;
6166 }
6167 else if (IsWindowsMSVC)
6168 ImplyVCPPCXXVer = true;
6169
6170 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
6171 options::OPT_fno_trigraphs);
6172 }
6173
6174 // GCC's behavior for -Wwrite-strings is a bit strange:
6175 // * In C, this "warning flag" changes the types of string literals from
6176 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
6177 // for the discarded qualifier.
6178 // * In C++, this is just a normal warning flag.
6179 //
6180 // Implementing this warning correctly in C is hard, so we follow GCC's
6181 // behavior for now. FIXME: Directly diagnose uses of a string literal as
6182 // a non-const char* in C, rather than using this crude hack.
6183 if (!types::isCXX(InputType)) {
6184 // FIXME: This should behave just like a warning flag, and thus should also
6185 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
6186 Arg *WriteStrings =
6187 Args.getLastArg(options::OPT_Wwrite_strings,
6188 options::OPT_Wno_write_strings, options::OPT_w);
6189 if (WriteStrings &&
6190 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
6191 CmdArgs.push_back("-fconst-strings");
6192 }
6193
6194 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
6195 // during C++ compilation, which it is by default. GCC keeps this define even
6196 // in the presence of '-w', match this behavior bug-for-bug.
6197 if (types::isCXX(InputType) &&
6198 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
6199 true)) {
6200 CmdArgs.push_back("-fdeprecated-macro");
6201 }
6202
6203 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
6204 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
6205 if (Asm->getOption().matches(options::OPT_fasm))
6206 CmdArgs.push_back("-fgnu-keywords");
6207 else
6208 CmdArgs.push_back("-fno-gnu-keywords");
6209 }
6210
6211 if (!ShouldEnableAutolink(Args, TC, JA))
6212 CmdArgs.push_back("-fno-autolink");
6213
6214 Args.AddLastArg(CmdArgs, options::OPT_ftemplate_depth_EQ);
6215 Args.AddLastArg(CmdArgs, options::OPT_foperator_arrow_depth_EQ);
6216 Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_depth_EQ);
6217 Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_steps_EQ);
6218
6219 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_library);
6220
6221 if (Args.hasArg(options::OPT_fexperimental_new_constant_interpreter))
6222 CmdArgs.push_back("-fexperimental-new-constant-interpreter");
6223
6224 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
6225 CmdArgs.push_back("-fbracket-depth");
6226 CmdArgs.push_back(A->getValue());
6227 }
6228
6229 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
6230 options::OPT_Wlarge_by_value_copy_def)) {
6231 if (A->getNumValues()) {
6232 StringRef bytes = A->getValue();
6233 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
6234 } else
6235 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
6236 }
6237
6238 if (Args.hasArg(options::OPT_relocatable_pch))
6239 CmdArgs.push_back("-relocatable-pch");
6240
6241 if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
6242 static const char *kCFABIs[] = {
6243 "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
6244 };
6245
6246 if (!llvm::is_contained(kCFABIs, StringRef(A->getValue())))
6247 D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
6248 else
6249 A->render(Args, CmdArgs);
6250 }
6251
6252 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
6253 CmdArgs.push_back("-fconstant-string-class");
6254 CmdArgs.push_back(A->getValue());
6255 }
6256
6257 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
6258 CmdArgs.push_back("-ftabstop");
6259 CmdArgs.push_back(A->getValue());
6260 }
6261
6262 Args.addOptInFlag(CmdArgs, options::OPT_fstack_size_section,
6263 options::OPT_fno_stack_size_section);
6264
6265 if (Args.hasArg(options::OPT_fstack_usage)) {
6266 CmdArgs.push_back("-stack-usage-file");
6267
6268 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
6269 SmallString<128> OutputFilename(OutputOpt->getValue());
6270 llvm::sys::path::replace_extension(OutputFilename, "su");
6271 CmdArgs.push_back(Args.MakeArgString(OutputFilename));
6272 } else
6273 CmdArgs.push_back(
6274 Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".su"));
6275 }
6276
6277 CmdArgs.push_back("-ferror-limit");
6278 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
6279 CmdArgs.push_back(A->getValue());
6280 else
6281 CmdArgs.push_back("19");
6282
6283 Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_backtrace_limit_EQ);
6284 Args.AddLastArg(CmdArgs, options::OPT_fmacro_backtrace_limit_EQ);
6285 Args.AddLastArg(CmdArgs, options::OPT_ftemplate_backtrace_limit_EQ);
6286 Args.AddLastArg(CmdArgs, options::OPT_fspell_checking_limit_EQ);
6287 Args.AddLastArg(CmdArgs, options::OPT_fcaret_diagnostics_max_lines_EQ);
6288
6289 // Pass -fmessage-length=.
6290 unsigned MessageLength = 0;
6291 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
6292 StringRef V(A->getValue());
6293 if (V.getAsInteger(0, MessageLength))
6294 D.Diag(diag::err_drv_invalid_argument_to_option)
6295 << V << A->getOption().getName();
6296 } else {
6297 // If -fmessage-length=N was not specified, determine whether this is a
6298 // terminal and, if so, implicitly define -fmessage-length appropriately.
6299 MessageLength = llvm::sys::Process::StandardErrColumns();
6300 }
6301 if (MessageLength != 0)
6302 CmdArgs.push_back(
6303 Args.MakeArgString("-fmessage-length=" + Twine(MessageLength)));
6304
6305 if (Arg *A = Args.getLastArg(options::OPT_frandomize_layout_seed_EQ))
6306 CmdArgs.push_back(
6307 Args.MakeArgString("-frandomize-layout-seed=" + Twine(A->getValue(0))));
6308
6309 if (Arg *A = Args.getLastArg(options::OPT_frandomize_layout_seed_file_EQ))
6310 CmdArgs.push_back(Args.MakeArgString("-frandomize-layout-seed-file=" +
6311 Twine(A->getValue(0))));
6312
6313 // -fvisibility= and -fvisibility-ms-compat are of a piece.
6314 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
6315 options::OPT_fvisibility_ms_compat)) {
6316 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
6317 A->render(Args, CmdArgs);
6318 } else {
6319 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
6320 CmdArgs.push_back("-fvisibility=hidden");
6321 CmdArgs.push_back("-ftype-visibility=default");
6322 }
6323 } else if (IsOpenMPDevice) {
6324 // When compiling for the OpenMP device we want protected visibility by
6325 // default. This prevents the device from accidentally preempting code on
6326 // the host, makes the system more robust, and improves performance.
6327 CmdArgs.push_back("-fvisibility=protected");
6328 }
6329
6330 // PS4/PS5 process these options in addClangTargetOptions.
6331 if (!RawTriple.isPS()) {
6332 if (const Arg *A =
6333 Args.getLastArg(options::OPT_fvisibility_from_dllstorageclass,
6334 options::OPT_fno_visibility_from_dllstorageclass)) {
6335 if (A->getOption().matches(
6336 options::OPT_fvisibility_from_dllstorageclass)) {
6337 CmdArgs.push_back("-fvisibility-from-dllstorageclass");
6338 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_dllexport_EQ);
6339 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_nodllstorageclass_EQ);
6340 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_externs_dllimport_EQ);
6341 Args.AddLastArg(CmdArgs,
6342 options::OPT_fvisibility_externs_nodllstorageclass_EQ);
6343 }
6344 }
6345 }
6346
6347 if (Args.hasFlag(options::OPT_fvisibility_inlines_hidden,
6348 options::OPT_fno_visibility_inlines_hidden, false))
6349 CmdArgs.push_back("-fvisibility-inlines-hidden");
6350
6351 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden_static_local_var,
6352 options::OPT_fno_visibility_inlines_hidden_static_local_var);
6353
6354 // -fvisibility-global-new-delete-hidden is a deprecated spelling of
6355 // -fvisibility-global-new-delete=force-hidden.
6356 if (const Arg *A =
6357 Args.getLastArg(options::OPT_fvisibility_global_new_delete_hidden)) {
6358 D.Diag(diag::warn_drv_deprecated_arg)
6359 << A->getAsString(Args)
6360 << "-fvisibility-global-new-delete=force-hidden";
6361 }
6362
6363 if (const Arg *A =
6364 Args.getLastArg(options::OPT_fvisibility_global_new_delete_EQ,
6365 options::OPT_fvisibility_global_new_delete_hidden)) {
6366 if (A->getOption().matches(options::OPT_fvisibility_global_new_delete_EQ)) {
6367 A->render(Args, CmdArgs);
6368 } else {
6369 assert(A->getOption().matches(
6370 options::OPT_fvisibility_global_new_delete_hidden));
6371 CmdArgs.push_back("-fvisibility-global-new-delete=force-hidden");
6372 }
6373 }
6374
6375 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
6376
6377 if (Args.hasFlag(options::OPT_fnew_infallible,
6378 options::OPT_fno_new_infallible, false))
6379 CmdArgs.push_back("-fnew-infallible");
6380
6381 if (Args.hasFlag(options::OPT_fno_operator_names,
6382 options::OPT_foperator_names, false))
6383 CmdArgs.push_back("-fno-operator-names");
6384
6385 // Forward -f (flag) options which we can pass directly.
6386 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
6387 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
6388 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
6389 Args.AddLastArg(CmdArgs, options::OPT_fzero_call_used_regs_EQ);
6390
6391 if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
6392 Triple.hasDefaultEmulatedTLS()))
6393 CmdArgs.push_back("-femulated-tls");
6394
6395 Args.addOptInFlag(CmdArgs, options::OPT_fcheck_new,
6396 options::OPT_fno_check_new);
6397
6398 if (Arg *A = Args.getLastArg(options::OPT_fzero_call_used_regs_EQ)) {
6399 // FIXME: There's no reason for this to be restricted to X86. The backend
6400 // code needs to be changed to include the appropriate function calls
6401 // automatically.
6402 if (!Triple.isX86() && !Triple.isAArch64())
6403 D.Diag(diag::err_drv_unsupported_opt_for_target)
6404 << A->getAsString(Args) << TripleStr;
6405 }
6406
6407 // AltiVec-like language extensions aren't relevant for assembling.
6408 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
6409 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
6410
6411 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
6412 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
6413
6414 // Forward flags for OpenMP. We don't do this if the current action is an
6415 // device offloading action other than OpenMP.
6416 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
6417 options::OPT_fno_openmp, false) &&
6418 (JA.isDeviceOffloading(Action::OFK_None) ||
6419 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
6420 switch (D.getOpenMPRuntime(Args)) {
6421 case Driver::OMPRT_OMP:
6422 case Driver::OMPRT_IOMP5:
6423 // Clang can generate useful OpenMP code for these two runtime libraries.
6424 CmdArgs.push_back("-fopenmp");
6425
6426 // If no option regarding the use of TLS in OpenMP codegeneration is
6427 // given, decide a default based on the target. Otherwise rely on the
6428 // options and pass the right information to the frontend.
6429 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
6430 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
6431 CmdArgs.push_back("-fnoopenmp-use-tls");
6432 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
6433 options::OPT_fno_openmp_simd);
6434 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_enable_irbuilder);
6435 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
6436 if (!Args.hasFlag(options::OPT_fopenmp_extensions,
6437 options::OPT_fno_openmp_extensions, /*Default=*/true))
6438 CmdArgs.push_back("-fno-openmp-extensions");
6439 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
6440 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
6441 Args.AddAllArgs(CmdArgs,
6442 options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
6443 if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
6444 options::OPT_fno_openmp_optimistic_collapse,
6445 /*Default=*/false))
6446 CmdArgs.push_back("-fopenmp-optimistic-collapse");
6447
6448 // When in OpenMP offloading mode with NVPTX target, forward
6449 // cuda-mode flag
6450 if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
6451 options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
6452 CmdArgs.push_back("-fopenmp-cuda-mode");
6453
6454 // When in OpenMP offloading mode, enable debugging on the device.
6455 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_target_debug_EQ);
6456 if (Args.hasFlag(options::OPT_fopenmp_target_debug,
6457 options::OPT_fno_openmp_target_debug, /*Default=*/false))
6458 CmdArgs.push_back("-fopenmp-target-debug");
6459
6460 // When in OpenMP offloading mode, forward assumptions information about
6461 // thread and team counts in the device.
6462 if (Args.hasFlag(options::OPT_fopenmp_assume_teams_oversubscription,
6463 options::OPT_fno_openmp_assume_teams_oversubscription,
6464 /*Default=*/false))
6465 CmdArgs.push_back("-fopenmp-assume-teams-oversubscription");
6466 if (Args.hasFlag(options::OPT_fopenmp_assume_threads_oversubscription,
6467 options::OPT_fno_openmp_assume_threads_oversubscription,
6468 /*Default=*/false))
6469 CmdArgs.push_back("-fopenmp-assume-threads-oversubscription");
6470 if (Args.hasArg(options::OPT_fopenmp_assume_no_thread_state))
6471 CmdArgs.push_back("-fopenmp-assume-no-thread-state");
6472 if (Args.hasArg(options::OPT_fopenmp_assume_no_nested_parallelism))
6473 CmdArgs.push_back("-fopenmp-assume-no-nested-parallelism");
6474 if (Args.hasArg(options::OPT_fopenmp_offload_mandatory))
6475 CmdArgs.push_back("-fopenmp-offload-mandatory");
6476 if (Args.hasArg(options::OPT_fopenmp_force_usm))
6477 CmdArgs.push_back("-fopenmp-force-usm");
6478 break;
6479 default:
6480 // By default, if Clang doesn't know how to generate useful OpenMP code
6481 // for a specific runtime library, we just don't pass the '-fopenmp' flag
6482 // down to the actual compilation.
6483 // FIXME: It would be better to have a mode which *only* omits IR
6484 // generation based on the OpenMP support so that we get consistent
6485 // semantic analysis, etc.
6486 break;
6487 }
6488 } else {
6489 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
6490 options::OPT_fno_openmp_simd);
6491 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
6492 Args.addOptOutFlag(CmdArgs, options::OPT_fopenmp_extensions,
6493 options::OPT_fno_openmp_extensions);
6494 }
6495
6496 // Forward the new driver to change offloading code generation.
6497 if (Args.hasFlag(options::OPT_offload_new_driver,
6498 options::OPT_no_offload_new_driver, false))
6499 CmdArgs.push_back("--offload-new-driver");
6500
6501 SanitizeArgs.addArgs(TC, Args, CmdArgs, InputType);
6502
6503 const XRayArgs &XRay = TC.getXRayArgs();
6504 XRay.addArgs(TC, Args, CmdArgs, InputType);
6505
6506 for (const auto &Filename :
6507 Args.getAllArgValues(options::OPT_fprofile_list_EQ)) {
6508 if (D.getVFS().exists(Filename))
6509 CmdArgs.push_back(Args.MakeArgString("-fprofile-list=" + Filename));
6510 else
6511 D.Diag(clang::diag::err_drv_no_such_file) << Filename;
6512 }
6513
6514 if (Arg *A = Args.getLastArg(options::OPT_fpatchable_function_entry_EQ)) {
6515 StringRef S0 = A->getValue(), S = S0;
6516 unsigned Size, Offset = 0;
6517 if (!Triple.isAArch64() && !Triple.isLoongArch() && !Triple.isRISCV() &&
6518 !Triple.isX86())
6519 D.Diag(diag::err_drv_unsupported_opt_for_target)
6520 << A->getAsString(Args) << TripleStr;
6521 else if (S.consumeInteger(10, Size) ||
6522 (!S.empty() && (!S.consume_front(",") ||
6523 S.consumeInteger(10, Offset) || !S.empty())))
6524 D.Diag(diag::err_drv_invalid_argument_to_option)
6525 << S0 << A->getOption().getName();
6526 else if (Size < Offset)
6527 D.Diag(diag::err_drv_unsupported_fpatchable_function_entry_argument);
6528 else {
6529 CmdArgs.push_back(Args.MakeArgString(A->getSpelling() + Twine(Size)));
6530 CmdArgs.push_back(Args.MakeArgString(
6531 "-fpatchable-function-entry-offset=" + Twine(Offset)));
6532 }
6533 }
6534
6535 Args.AddLastArg(CmdArgs, options::OPT_fms_hotpatch);
6536
6537 if (TC.SupportsProfiling()) {
6538 Args.AddLastArg(CmdArgs, options::OPT_pg);
6539
6540 llvm::Triple::ArchType Arch = TC.getArch();
6541 if (Arg *A = Args.getLastArg(options::OPT_mfentry)) {
6542 if (Arch == llvm::Triple::systemz || TC.getTriple().isX86())
6543 A->render(Args, CmdArgs);
6544 else
6545 D.Diag(diag::err_drv_unsupported_opt_for_target)
6546 << A->getAsString(Args) << TripleStr;
6547 }
6548 if (Arg *A = Args.getLastArg(options::OPT_mnop_mcount)) {
6549 if (Arch == llvm::Triple::systemz)
6550 A->render(Args, CmdArgs);
6551 else
6552 D.Diag(diag::err_drv_unsupported_opt_for_target)
6553 << A->getAsString(Args) << TripleStr;
6554 }
6555 if (Arg *A = Args.getLastArg(options::OPT_mrecord_mcount)) {
6556 if (Arch == llvm::Triple::systemz)
6557 A->render(Args, CmdArgs);
6558 else
6559 D.Diag(diag::err_drv_unsupported_opt_for_target)
6560 << A->getAsString(Args) << TripleStr;
6561 }
6562 }
6563
6564 if (Arg *A = Args.getLastArgNoClaim(options::OPT_pg)) {
6565 if (TC.getTriple().isOSzOS()) {
6566 D.Diag(diag::err_drv_unsupported_opt_for_target)
6567 << A->getAsString(Args) << TripleStr;
6568 }
6569 }
6570 if (Arg *A = Args.getLastArgNoClaim(options::OPT_p)) {
6571 if (!(TC.getTriple().isOSAIX() || TC.getTriple().isOSOpenBSD())) {
6572 D.Diag(diag::err_drv_unsupported_opt_for_target)
6573 << A->getAsString(Args) << TripleStr;
6574 }
6575 }
6576 if (Arg *A = Args.getLastArgNoClaim(options::OPT_p, options::OPT_pg)) {
6577 if (A->getOption().matches(options::OPT_p)) {
6578 A->claim();
6579 if (TC.getTriple().isOSAIX() && !Args.hasArgNoClaim(options::OPT_pg))
6580 CmdArgs.push_back("-pg");
6581 }
6582 }
6583
6584 // Reject AIX-specific link options on other targets.
6585 if (!TC.getTriple().isOSAIX()) {
6586 for (const Arg *A : Args.filtered(options::OPT_b, options::OPT_K,
6587 options::OPT_mxcoff_build_id_EQ)) {
6588 D.Diag(diag::err_drv_unsupported_opt_for_target)
6589 << A->getSpelling() << TripleStr;
6590 }
6591 }
6592
6593 if (Args.getLastArg(options::OPT_fapple_kext) ||
6594 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
6595 CmdArgs.push_back("-fapple-kext");
6596
6597 Args.AddLastArg(CmdArgs, options::OPT_altivec_src_compat);
6598 Args.AddLastArg(CmdArgs, options::OPT_flax_vector_conversions_EQ);
6599 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
6600 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
6601 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
6602 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
6603 Args.AddLastArg(CmdArgs, options::OPT_ftime_report_EQ);
6604 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
6605 Args.AddLastArg(CmdArgs, options::OPT_malign_double);
6606 Args.AddLastArg(CmdArgs, options::OPT_fno_temp_file);
6607
6608 if (const char *Name = C.getTimeTraceFile(&JA)) {
6609 CmdArgs.push_back(Args.MakeArgString("-ftime-trace=" + Twine(Name)));
6610 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);
6611 }
6612
6613 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
6614 CmdArgs.push_back("-ftrapv-handler");
6615 CmdArgs.push_back(A->getValue());
6616 }
6617
6618 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
6619
6620 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
6621 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
6622 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
6623 if (A->getOption().matches(options::OPT_fwrapv))
6624 CmdArgs.push_back("-fwrapv");
6625 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
6626 options::OPT_fno_strict_overflow)) {
6627 if (A->getOption().matches(options::OPT_fno_strict_overflow))
6628 CmdArgs.push_back("-fwrapv");
6629 }
6630
6631 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
6632 options::OPT_fno_reroll_loops))
6633 if (A->getOption().matches(options::OPT_freroll_loops))
6634 CmdArgs.push_back("-freroll-loops");
6635
6636 Args.AddLastArg(CmdArgs, options::OPT_ffinite_loops,
6637 options::OPT_fno_finite_loops);
6638
6639 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
6640 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
6641 options::OPT_fno_unroll_loops);
6642
6643 Args.AddLastArg(CmdArgs, options::OPT_fstrict_flex_arrays_EQ);
6644
6645 Args.AddLastArg(CmdArgs, options::OPT_pthread);
6646
6647 Args.addOptInFlag(CmdArgs, options::OPT_mspeculative_load_hardening,
6648 options::OPT_mno_speculative_load_hardening);
6649
6650 RenderSSPOptions(D, TC, Args, CmdArgs, KernelOrKext);
6651 RenderSCPOptions(TC, Args, CmdArgs);
6652 RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
6653
6654 Args.AddLastArg(CmdArgs, options::OPT_fswift_async_fp_EQ);
6655
6656 Args.addOptInFlag(CmdArgs, options::OPT_mstackrealign,
6657 options::OPT_mno_stackrealign);
6658
6659 if (Args.hasArg(options::OPT_mstack_alignment)) {
6660 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
6661 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
6662 }
6663
6664 if (Args.hasArg(options::OPT_mstack_probe_size)) {
6665 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
6666
6667 if (!Size.empty())
6668 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
6669 else
6670 CmdArgs.push_back("-mstack-probe-size=0");
6671 }
6672
6673 Args.addOptOutFlag(CmdArgs, options::OPT_mstack_arg_probe,
6674 options::OPT_mno_stack_arg_probe);
6675
6676 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
6677 options::OPT_mno_restrict_it)) {
6678 if (A->getOption().matches(options::OPT_mrestrict_it)) {
6679 CmdArgs.push_back("-mllvm");
6680 CmdArgs.push_back("-arm-restrict-it");
6681 } else {
6682 CmdArgs.push_back("-mllvm");
6683 CmdArgs.push_back("-arm-default-it");
6684 }
6685 }
6686
6687 // Forward -cl options to -cc1
6688 RenderOpenCLOptions(Args, CmdArgs, InputType);
6689
6690 // Forward hlsl options to -cc1
6691 RenderHLSLOptions(Args, CmdArgs, InputType);
6692
6693 // Forward OpenACC options to -cc1
6694 RenderOpenACCOptions(D, Args, CmdArgs, InputType);
6695
6696 if (IsHIP) {
6697 if (Args.hasFlag(options::OPT_fhip_new_launch_api,
6698 options::OPT_fno_hip_new_launch_api, true))
6699 CmdArgs.push_back("-fhip-new-launch-api");
6700 Args.addOptInFlag(CmdArgs, options::OPT_fgpu_allow_device_init,
6701 options::OPT_fno_gpu_allow_device_init);
6702 Args.AddLastArg(CmdArgs, options::OPT_hipstdpar);
6703 Args.AddLastArg(CmdArgs, options::OPT_hipstdpar_interpose_alloc);
6704 Args.addOptInFlag(CmdArgs, options::OPT_fhip_kernel_arg_name,
6705 options::OPT_fno_hip_kernel_arg_name);
6706 }
6707
6708 if (IsCuda || IsHIP) {
6709 if (IsRDCMode)
6710 CmdArgs.push_back("-fgpu-rdc");
6711 Args.addOptInFlag(CmdArgs, options::OPT_fgpu_defer_diag,
6712 options::OPT_fno_gpu_defer_diag);
6713 if (Args.hasFlag(options::OPT_fgpu_exclude_wrong_side_overloads,
6714 options::OPT_fno_gpu_exclude_wrong_side_overloads,
6715 false)) {
6716 CmdArgs.push_back("-fgpu-exclude-wrong-side-overloads");
6717 CmdArgs.push_back("-fgpu-defer-diag");
6718 }
6719 }
6720
6721 // Forward -nogpulib to -cc1.
6722 if (Args.hasArg(options::OPT_nogpulib))
6723 CmdArgs.push_back("-nogpulib");
6724
6725 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
6726 CmdArgs.push_back(
6727 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
6728 }
6729
6730 if (Arg *A = Args.getLastArg(options::OPT_mfunction_return_EQ))
6731 CmdArgs.push_back(
6732 Args.MakeArgString(Twine("-mfunction-return=") + A->getValue()));
6733
6734 Args.AddLastArg(CmdArgs, options::OPT_mindirect_branch_cs_prefix);
6735
6736 // Forward -f options with positive and negative forms; we translate these by
6737 // hand. Do not propagate PGO options to the GPU-side compilations as the
6738 // profile info is for the host-side compilation only.
6739 if (!(IsCudaDevice || IsHIPDevice)) {
6740 if (Arg *A = getLastProfileSampleUseArg(Args)) {
6741 auto *PGOArg = Args.getLastArg(
6742 options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,
6743 options::OPT_fcs_profile_generate,
6744 options::OPT_fcs_profile_generate_EQ, options::OPT_fprofile_use,
6745 options::OPT_fprofile_use_EQ);
6746 if (PGOArg)
6747 D.Diag(diag::err_drv_argument_not_allowed_with)
6748 << "SampleUse with PGO options";
6749
6750 StringRef fname = A->getValue();
6751 if (!llvm::sys::fs::exists(fname))
6752 D.Diag(diag::err_drv_no_such_file) << fname;
6753 else
6754 A->render(Args, CmdArgs);
6755 }
6756 Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
6757
6758 if (Args.hasFlag(options::OPT_fpseudo_probe_for_profiling,
6759 options::OPT_fno_pseudo_probe_for_profiling, false)) {
6760 CmdArgs.push_back("-fpseudo-probe-for-profiling");
6761 // Enforce -funique-internal-linkage-names if it's not explicitly turned
6762 // off.
6763 if (Args.hasFlag(options::OPT_funique_internal_linkage_names,
6764 options::OPT_fno_unique_internal_linkage_names, true))
6765 CmdArgs.push_back("-funique-internal-linkage-names");
6766 }
6767 }
6768 RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
6769
6770 Args.addOptOutFlag(CmdArgs, options::OPT_fassume_sane_operator_new,
6771 options::OPT_fno_assume_sane_operator_new);
6772
6773 if (Args.hasFlag(options::OPT_fapinotes, options::OPT_fno_apinotes, false))
6774 CmdArgs.push_back("-fapinotes");
6775 if (Args.hasFlag(options::OPT_fapinotes_modules,
6776 options::OPT_fno_apinotes_modules, false))
6777 CmdArgs.push_back("-fapinotes-modules");
6778 Args.AddLastArg(CmdArgs, options::OPT_fapinotes_swift_version);
6779
6780 // -fblocks=0 is default.
6781 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
6782 TC.IsBlocksDefault()) ||
6783 (Args.hasArg(options::OPT_fgnu_runtime) &&
6784 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
6785 !Args.hasArg(options::OPT_fno_blocks))) {
6786 CmdArgs.push_back("-fblocks");
6787
6788 if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
6789 CmdArgs.push_back("-fblocks-runtime-optional");
6790 }
6791
6792 // -fencode-extended-block-signature=1 is default.
6793 if (TC.IsEncodeExtendedBlockSignatureDefault())
6794 CmdArgs.push_back("-fencode-extended-block-signature");
6795
6796 if (Args.hasFlag(options::OPT_fcoro_aligned_allocation,
6797 options::OPT_fno_coro_aligned_allocation, false) &&
6798 types::isCXX(InputType))
6799 CmdArgs.push_back("-fcoro-aligned-allocation");
6800
6801 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
6802 options::OPT_fno_double_square_bracket_attributes);
6803
6804 Args.addOptOutFlag(CmdArgs, options::OPT_faccess_control,
6805 options::OPT_fno_access_control);
6806 Args.addOptOutFlag(CmdArgs, options::OPT_felide_constructors,
6807 options::OPT_fno_elide_constructors);
6808
6809 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
6810
6811 if (KernelOrKext || (types::isCXX(InputType) &&
6812 (RTTIMode == ToolChain::RM_Disabled)))
6813 CmdArgs.push_back("-fno-rtti");
6814
6815 // -fshort-enums=0 is default for all architectures except Hexagon and z/OS.
6816 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
6817 TC.getArch() == llvm::Triple::hexagon || Triple.isOSzOS()))
6818 CmdArgs.push_back("-fshort-enums");
6819
6820 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
6821
6822 // -fuse-cxa-atexit is default.
6823 if (!Args.hasFlag(
6824 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
6825 !RawTriple.isOSAIX() && !RawTriple.isOSWindows() &&
6826 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
6827 RawTriple.hasEnvironment())) ||
6828 KernelOrKext)
6829 CmdArgs.push_back("-fno-use-cxa-atexit");
6830
6831 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
6832 options::OPT_fno_register_global_dtors_with_atexit,
6833 RawTriple.isOSDarwin() && !KernelOrKext))
6834 CmdArgs.push_back("-fregister-global-dtors-with-atexit");
6835
6836 Args.addOptInFlag(CmdArgs, options::OPT_fuse_line_directives,
6837 options::OPT_fno_use_line_directives);
6838
6839 // -fno-minimize-whitespace is default.
6840 if (Args.hasFlag(options::OPT_fminimize_whitespace,
6841 options::OPT_fno_minimize_whitespace, false)) {
6842 types::ID InputType = Inputs[0].getType();
6843 if (!isDerivedFromC(InputType))
6844 D.Diag(diag::err_drv_opt_unsupported_input_type)
6845 << "-fminimize-whitespace" << types::getTypeName(InputType);
6846 CmdArgs.push_back("-fminimize-whitespace");
6847 }
6848
6849 // -fno-keep-system-includes is default.
6850 if (Args.hasFlag(options::OPT_fkeep_system_includes,
6851 options::OPT_fno_keep_system_includes, false)) {
6852 types::ID InputType = Inputs[0].getType();
6853 if (!isDerivedFromC(InputType))
6854 D.Diag(diag::err_drv_opt_unsupported_input_type)
6855 << "-fkeep-system-includes" << types::getTypeName(InputType);
6856 CmdArgs.push_back("-fkeep-system-includes");
6857 }
6858
6859 // -fms-extensions=0 is default.
6860 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
6861 IsWindowsMSVC))
6862 CmdArgs.push_back("-fms-extensions");
6863
6864 // -fms-compatibility=0 is default.
6865 bool IsMSVCCompat = Args.hasFlag(
6866 options::OPT_fms_compatibility, options::OPT_fno_ms_compatibility,
6867 (IsWindowsMSVC && Args.hasFlag(options::OPT_fms_extensions,
6868 options::OPT_fno_ms_extensions, true)));
6869 if (IsMSVCCompat)
6870 CmdArgs.push_back("-fms-compatibility");
6871
6872 if (Triple.isWindowsMSVCEnvironment() && !D.IsCLMode() &&
6873 Args.hasArg(options::OPT_fms_runtime_lib_EQ))
6874 ProcessVSRuntimeLibrary(Args, CmdArgs);
6875
6876 // Handle -fgcc-version, if present.
6877 VersionTuple GNUCVer;
6878 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {
6879 // Check that the version has 1 to 3 components and the minor and patch
6880 // versions fit in two decimal digits.
6881 StringRef Val = A->getValue();
6882 Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable.
6883 bool Invalid = GNUCVer.tryParse(Val);
6884 unsigned Minor = GNUCVer.getMinor().value_or(0);
6885 unsigned Patch = GNUCVer.getSubminor().value_or(0);
6886 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
6887 D.Diag(diag::err_drv_invalid_value)
6888 << A->getAsString(Args) << A->getValue();
6889 }
6890 } else if (!IsMSVCCompat) {
6891 // Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect.
6892 GNUCVer = VersionTuple(4, 2, 1);
6893 }
6894 if (!GNUCVer.empty()) {
6895 CmdArgs.push_back(
6896 Args.MakeArgString("-fgnuc-version=" + GNUCVer.getAsString()));
6897 }
6898
6899 VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
6900 if (!MSVT.empty())
6901 CmdArgs.push_back(
6902 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
6903
6904 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
6905 if (ImplyVCPPCVer) {
6906 StringRef LanguageStandard;
6907 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
6908 Std = StdArg;
6909 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
6910 .Case("c11", "-std=c11")
6911 .Case("c17", "-std=c17")
6912 .Default("");
6913 if (LanguageStandard.empty())
6914 D.Diag(clang::diag::warn_drv_unused_argument)
6915 << StdArg->getAsString(Args);
6916 }
6917 CmdArgs.push_back(LanguageStandard.data());
6918 }
6919 if (ImplyVCPPCXXVer) {
6920 StringRef LanguageStandard;
6921 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
6922 Std = StdArg;
6923 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
6924 .Case("c++14", "-std=c++14")
6925 .Case("c++17", "-std=c++17")
6926 .Case("c++20", "-std=c++20")
6927 // TODO add c++23 and c++26 when MSVC supports it.
6928 .Case("c++latest", "-std=c++26")
6929 .Default("");
6930 if (LanguageStandard.empty())
6931 D.Diag(clang::diag::warn_drv_unused_argument)
6932 << StdArg->getAsString(Args);
6933 }
6934
6935 if (LanguageStandard.empty()) {
6936 if (IsMSVC2015Compatible)
6937 LanguageStandard = "-std=c++14";
6938 else
6939 LanguageStandard = "-std=c++11";
6940 }
6941
6942 CmdArgs.push_back(LanguageStandard.data());
6943 }
6944
6945 Args.addOptInFlag(CmdArgs, options::OPT_fborland_extensions,
6946 options::OPT_fno_borland_extensions);
6947
6948 // -fno-declspec is default, except for PS4/PS5.
6949 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
6950 RawTriple.isPS()))
6951 CmdArgs.push_back("-fdeclspec");
6952 else if (Args.hasArg(options::OPT_fno_declspec))
6953 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
6954
6955 // -fthreadsafe-static is default, except for MSVC compatibility versions less
6956 // than 19.
6957 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
6958 options::OPT_fno_threadsafe_statics,
6959 !types::isOpenCL(InputType) &&
6960 (!IsWindowsMSVC || IsMSVC2015Compatible)))
6961 CmdArgs.push_back("-fno-threadsafe-statics");
6962
6963 // -fgnu-keywords default varies depending on language; only pass if
6964 // specified.
6965 Args.AddLastArg(CmdArgs, options::OPT_fgnu_keywords,
6966 options::OPT_fno_gnu_keywords);
6967
6968 Args.addOptInFlag(CmdArgs, options::OPT_fgnu89_inline,
6969 options::OPT_fno_gnu89_inline);
6970
6971 const Arg *InlineArg = Args.getLastArg(options::OPT_finline_functions,
6972 options::OPT_finline_hint_functions,
6973 options::OPT_fno_inline_functions);
6974 if (Arg *A = Args.getLastArg(options::OPT_finline, options::OPT_fno_inline)) {
6975 if (A->getOption().matches(options::OPT_fno_inline))
6976 A->render(Args, CmdArgs);
6977 } else if (InlineArg) {
6978 InlineArg->render(Args, CmdArgs);
6979 }
6980
6981 Args.AddLastArg(CmdArgs, options::OPT_finline_max_stacksize_EQ);
6982
6983 // FIXME: Find a better way to determine whether we are in C++20.
6984 bool HaveCxx20 =
6985 Std &&
6986 (Std->containsValue("c++2a") || Std->containsValue("gnu++2a") ||
6987 Std->containsValue("c++20") || Std->containsValue("gnu++20") ||
6988 Std->containsValue("c++2b") || Std->containsValue("gnu++2b") ||
6989 Std->containsValue("c++23") || Std->containsValue("gnu++23") ||
6990 Std->containsValue("c++2c") || Std->containsValue("gnu++2c") ||
6991 Std->containsValue("c++26") || Std->containsValue("gnu++26") ||
6992 Std->containsValue("c++latest") || Std->containsValue("gnu++latest"));
6993 bool HaveModules =
6994 RenderModulesOptions(C, D, Args, Input, Output, HaveCxx20, CmdArgs);
6995
6996 // -fdelayed-template-parsing is default when targeting MSVC.
6997 // Many old Windows SDK versions require this to parse.
6998 //
6999 // According to
7000 // https://learn.microsoft.com/en-us/cpp/build/reference/permissive-standards-conformance?view=msvc-170,
7001 // MSVC actually defaults to -fno-delayed-template-parsing (/Zc:twoPhase-
7002 // with MSVC CLI) if using C++20. So we match the behavior with MSVC here to
7003 // not enable -fdelayed-template-parsing by default after C++20.
7004 //
7005 // FIXME: Given -fdelayed-template-parsing is a source of bugs, we should be
7006 // able to disable this by default at some point.
7007 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
7008 options::OPT_fno_delayed_template_parsing,
7009 IsWindowsMSVC && !HaveCxx20)) {
7010 if (HaveCxx20)
7011 D.Diag(clang::diag::warn_drv_delayed_template_parsing_after_cxx20);
7012
7013 CmdArgs.push_back("-fdelayed-template-parsing");
7014 }
7015
7016 if (Args.hasFlag(options::OPT_fpch_validate_input_files_content,
7017 options::OPT_fno_pch_validate_input_files_content, false))
7018 CmdArgs.push_back("-fvalidate-ast-input-files-content");
7019 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
7020 options::OPT_fno_pch_instantiate_templates, false))
7021 CmdArgs.push_back("-fpch-instantiate-templates");
7022 if (Args.hasFlag(options::OPT_fpch_codegen, options::OPT_fno_pch_codegen,
7023 false))
7024 CmdArgs.push_back("-fmodules-codegen");
7025 if (Args.hasFlag(options::OPT_fpch_debuginfo, options::OPT_fno_pch_debuginfo,
7026 false))
7027 CmdArgs.push_back("-fmodules-debuginfo");
7028
7029 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, Inputs, CmdArgs, rewriteKind);
7030 RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
7031 Input, CmdArgs);
7032
7033 if (types::isObjC(Input.getType()) &&
7034 Args.hasFlag(options::OPT_fobjc_encode_cxx_class_template_spec,
7035 options::OPT_fno_objc_encode_cxx_class_template_spec,
7036 !Runtime.isNeXTFamily()))
7037 CmdArgs.push_back("-fobjc-encode-cxx-class-template-spec");
7038
7039 if (Args.hasFlag(options::OPT_fapplication_extension,
7040 options::OPT_fno_application_extension, false))
7041 CmdArgs.push_back("-fapplication-extension");
7042
7043 // Handle GCC-style exception args.
7044 bool EH = false;
7045 if (!C.getDriver().IsCLMode())
7046 EH = addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
7047
7048 // Handle exception personalities
7049 Arg *A = Args.getLastArg(
7050 options::OPT_fsjlj_exceptions, options::OPT_fseh_exceptions,
7051 options::OPT_fdwarf_exceptions, options::OPT_fwasm_exceptions);
7052 if (A) {
7053 const Option &Opt = A->getOption();
7054 if (Opt.matches(options::OPT_fsjlj_exceptions))
7055 CmdArgs.push_back("-exception-model=sjlj");
7056 if (Opt.matches(options::OPT_fseh_exceptions))
7057 CmdArgs.push_back("-exception-model=seh");
7058 if (Opt.matches(options::OPT_fdwarf_exceptions))
7059 CmdArgs.push_back("-exception-model=dwarf");
7060 if (Opt.matches(options::OPT_fwasm_exceptions))
7061 CmdArgs.push_back("-exception-model=wasm");
7062 } else {
7063 switch (TC.GetExceptionModel(Args)) {
7064 default:
7065 break;
7066 case llvm::ExceptionHandling::DwarfCFI:
7067 CmdArgs.push_back("-exception-model=dwarf");
7068 break;
7069 case llvm::ExceptionHandling::SjLj:
7070 CmdArgs.push_back("-exception-model=sjlj");
7071 break;
7072 case llvm::ExceptionHandling::WinEH:
7073 CmdArgs.push_back("-exception-model=seh");
7074 break;
7075 }
7076 }
7077
7078 // C++ "sane" operator new.
7079 Args.addOptOutFlag(CmdArgs, options::OPT_fassume_sane_operator_new,
7080 options::OPT_fno_assume_sane_operator_new);
7081
7082 // -fassume-unique-vtables is on by default.
7083 Args.addOptOutFlag(CmdArgs, options::OPT_fassume_unique_vtables,
7084 options::OPT_fno_assume_unique_vtables);
7085
7086 // -frelaxed-template-template-args is off by default, as it is a severe
7087 // breaking change until a corresponding change to template partial ordering
7088 // is provided.
7089 Args.addOptInFlag(CmdArgs, options::OPT_frelaxed_template_template_args,
7090 options::OPT_fno_relaxed_template_template_args);
7091
7092 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
7093 // most platforms.
7094 Args.addOptInFlag(CmdArgs, options::OPT_fsized_deallocation,
7095 options::OPT_fno_sized_deallocation);
7096
7097 // -faligned-allocation is on by default in C++17 onwards and otherwise off
7098 // by default.
7099 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
7100 options::OPT_fno_aligned_allocation,
7101 options::OPT_faligned_new_EQ)) {
7102 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
7103 CmdArgs.push_back("-fno-aligned-allocation");
7104 else
7105 CmdArgs.push_back("-faligned-allocation");
7106 }
7107
7108 // The default new alignment can be specified using a dedicated option or via
7109 // a GCC-compatible option that also turns on aligned allocation.
7110 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
7111 options::OPT_faligned_new_EQ))
7112 CmdArgs.push_back(
7113 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
7114
7115 // -fconstant-cfstrings is default, and may be subject to argument translation
7116 // on Darwin.
7117 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
7118 options::OPT_fno_constant_cfstrings, true) ||
7119 !Args.hasFlag(options::OPT_mconstant_cfstrings,
7120 options::OPT_mno_constant_cfstrings, true))
7121 CmdArgs.push_back("-fno-constant-cfstrings");
7122
7123 Args.addOptInFlag(CmdArgs, options::OPT_fpascal_strings,
7124 options::OPT_fno_pascal_strings);
7125
7126 // Honor -fpack-struct= and -fpack-struct, if given. Note that
7127 // -fno-pack-struct doesn't apply to -fpack-struct=.
7128 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
7129 std::string PackStructStr = "-fpack-struct=";
7130 PackStructStr += A->getValue();
7131 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
7132 } else if (Args.hasFlag(options::OPT_fpack_struct,
7133 options::OPT_fno_pack_struct, false)) {
7134 CmdArgs.push_back("-fpack-struct=1");
7135 }
7136
7137 // Handle -fmax-type-align=N and -fno-type-align
7138 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
7139 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
7140 if (!SkipMaxTypeAlign) {
7141 std::string MaxTypeAlignStr = "-fmax-type-align=";
7142 MaxTypeAlignStr += A->getValue();
7143 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
7144 }
7145 } else if (RawTriple.isOSDarwin()) {
7146 if (!SkipMaxTypeAlign) {
7147 std::string MaxTypeAlignStr = "-fmax-type-align=16";
7148 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
7149 }
7150 }
7151
7152 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
7153 CmdArgs.push_back("-Qn");
7154
7155 // -fno-common is the default, set -fcommon only when that flag is set.
7156 Args.addOptInFlag(CmdArgs, options::OPT_fcommon, options::OPT_fno_common);
7157
7158 // -fsigned-bitfields is default, and clang doesn't yet support
7159 // -funsigned-bitfields.
7160 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
7161 options::OPT_funsigned_bitfields, true))
7162 D.Diag(diag::warn_drv_clang_unsupported)
7163 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
7164
7165 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
7166 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope, true))
7167 D.Diag(diag::err_drv_clang_unsupported)
7168 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
7169
7170 // -finput_charset=UTF-8 is default. Reject others
7171 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
7172 StringRef value = inputCharset->getValue();
7173 if (!value.equals_insensitive("utf-8"))
7174 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
7175 << value;
7176 }
7177
7178 // -fexec_charset=UTF-8 is default. Reject others
7179 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
7180 StringRef value = execCharset->getValue();
7181 if (!value.equals_insensitive("utf-8"))
7182 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
7183 << value;
7184 }
7185
7186 RenderDiagnosticsOptions(D, Args, CmdArgs);
7187
7188 Args.addOptInFlag(CmdArgs, options::OPT_fasm_blocks,
7189 options::OPT_fno_asm_blocks);
7190
7191 Args.addOptOutFlag(CmdArgs, options::OPT_fgnu_inline_asm,
7192 options::OPT_fno_gnu_inline_asm);
7193
7194 // Enable vectorization per default according to the optimization level
7195 // selected. For optimization levels that want vectorization we use the alias
7196 // option to simplify the hasFlag logic.
7197 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
7198 OptSpecifier VectorizeAliasOption =
7199 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
7200 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
7201 options::OPT_fno_vectorize, EnableVec))
7202 CmdArgs.push_back("-vectorize-loops");
7203
7204 // -fslp-vectorize is enabled based on the optimization level selected.
7205 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
7206 OptSpecifier SLPVectAliasOption =
7207 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
7208 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
7209 options::OPT_fno_slp_vectorize, EnableSLPVec))
7210 CmdArgs.push_back("-vectorize-slp");
7211
7212 ParseMPreferVectorWidth(D, Args, CmdArgs);
7213
7214 Args.AddLastArg(CmdArgs, options::OPT_fshow_overloads_EQ);
7215 Args.AddLastArg(CmdArgs,
7216 options::OPT_fsanitize_undefined_strip_path_components_EQ);
7217
7218 // -fdollars-in-identifiers default varies depending on platform and
7219 // language; only pass if specified.
7220 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
7221 options::OPT_fno_dollars_in_identifiers)) {
7222 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
7223 CmdArgs.push_back("-fdollars-in-identifiers");
7224 else
7225 CmdArgs.push_back("-fno-dollars-in-identifiers");
7226 }
7227
7228 Args.addOptInFlag(CmdArgs, options::OPT_fapple_pragma_pack,
7229 options::OPT_fno_apple_pragma_pack);
7230
7231 // Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
7232 if (willEmitRemarks(Args) && checkRemarksOptions(D, Args, Triple))
7233 renderRemarksOptions(Args, CmdArgs, Triple, Input, Output, JA);
7234
7235 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
7236 options::OPT_fno_rewrite_imports, false);
7237 if (RewriteImports)
7238 CmdArgs.push_back("-frewrite-imports");
7239
7240 Args.addOptInFlag(CmdArgs, options::OPT_fdirectives_only,
7241 options::OPT_fno_directives_only);
7242
7243 // Enable rewrite includes if the user's asked for it or if we're generating
7244 // diagnostics.
7245 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
7246 // nice to enable this when doing a crashdump for modules as well.
7247 if (Args.hasFlag(options::OPT_frewrite_includes,
7248 options::OPT_fno_rewrite_includes, false) ||
7249 (C.isForDiagnostics() && !HaveModules))
7250 CmdArgs.push_back("-frewrite-includes");
7251
7252 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
7253 if (Arg *A = Args.getLastArg(options::OPT_traditional,
7254 options::OPT_traditional_cpp)) {
7255 if (isa<PreprocessJobAction>(JA))
7256 CmdArgs.push_back("-traditional-cpp");
7257 else
7258 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
7259 }
7260
7261 Args.AddLastArg(CmdArgs, options::OPT_dM);
7262 Args.AddLastArg(CmdArgs, options::OPT_dD);
7263 Args.AddLastArg(CmdArgs, options::OPT_dI);
7264
7265 Args.AddLastArg(CmdArgs, options::OPT_fmax_tokens_EQ);
7266
7267 // Handle serialized diagnostics.
7268 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
7269 CmdArgs.push_back("-serialize-diagnostic-file");
7270 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
7271 }
7272
7273 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
7274 CmdArgs.push_back("-fretain-comments-from-system-headers");
7275
7276 // Forward -fcomment-block-commands to -cc1.
7277 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
7278 // Forward -fparse-all-comments to -cc1.
7279 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
7280
7281 // Turn -fplugin=name.so into -load name.so
7282 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
7283 CmdArgs.push_back("-load");
7284 CmdArgs.push_back(A->getValue());
7285 A->claim();
7286 }
7287
7288 // Turn -fplugin-arg-pluginname-key=value into
7289 // -plugin-arg-pluginname key=value
7290 // GCC has an actual plugin_argument struct with key/value pairs that it
7291 // passes to its plugins, but we don't, so just pass it on as-is.
7292 //
7293 // The syntax for -fplugin-arg- is ambiguous if both plugin name and
7294 // argument key are allowed to contain dashes. GCC therefore only
7295 // allows dashes in the key. We do the same.
7296 for (const Arg *A : Args.filtered(options::OPT_fplugin_arg)) {
7297 auto ArgValue = StringRef(A->getValue());
7298 auto FirstDashIndex = ArgValue.find('-');
7299 StringRef PluginName = ArgValue.substr(0, FirstDashIndex);
7300 StringRef Arg = ArgValue.substr(FirstDashIndex + 1);
7301
7302 A->claim();
7303 if (FirstDashIndex == StringRef::npos || Arg.empty()) {
7304 if (PluginName.empty()) {
7305 D.Diag(diag::warn_drv_missing_plugin_name) << A->getAsString(Args);
7306 } else {
7307 D.Diag(diag::warn_drv_missing_plugin_arg)
7308 << PluginName << A->getAsString(Args);
7309 }
7310 continue;
7311 }
7312
7313 CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-arg-") + PluginName));
7314 CmdArgs.push_back(Args.MakeArgString(Arg));
7315 }
7316
7317 // Forward -fpass-plugin=name.so to -cc1.
7318 for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {
7319 CmdArgs.push_back(
7320 Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));
7321 A->claim();
7322 }
7323
7324 // Forward --vfsoverlay to -cc1.
7325 for (const Arg *A : Args.filtered(options::OPT_vfsoverlay)) {
7326 CmdArgs.push_back("--vfsoverlay");
7327 CmdArgs.push_back(A->getValue());
7328 A->claim();
7329 }
7330
7331 Args.addOptInFlag(CmdArgs, options::OPT_fsafe_buffer_usage_suggestions,
7332 options::OPT_fno_safe_buffer_usage_suggestions);
7333
7334 // Setup statistics file output.
7335 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
7336 if (!StatsFile.empty()) {
7337 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
7338 if (D.CCPrintInternalStats)
7339 CmdArgs.push_back("-stats-file-append");
7340 }
7341
7342 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
7343 // parser.
7344 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
7345 Arg->claim();
7346 // -finclude-default-header flag is for preprocessor,
7347 // do not pass it to other cc1 commands when save-temps is enabled
7348 if (C.getDriver().isSaveTempsEnabled() &&
7349 !isa<PreprocessJobAction>(JA)) {
7350 if (StringRef(Arg->getValue()) == "-finclude-default-header")
7351 continue;
7352 }
7353 CmdArgs.push_back(Arg->getValue());
7354 }
7355 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
7356 A->claim();
7357
7358 // We translate this by hand to the -cc1 argument, since nightly test uses
7359 // it and developers have been trained to spell it with -mllvm. Both
7360 // spellings are now deprecated and should be removed.
7361 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
7362 CmdArgs.push_back("-disable-llvm-optzns");
7363 } else {
7364 A->render(Args, CmdArgs);
7365 }
7366 }
7367
7368 // With -save-temps, we want to save the unoptimized bitcode output from the
7369 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
7370 // by the frontend.
7371 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
7372 // has slightly different breakdown between stages.
7373 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
7374 // pristine IR generated by the frontend. Ideally, a new compile action should
7375 // be added so both IR can be captured.
7376 if ((C.getDriver().isSaveTempsEnabled() ||
7377 JA.isHostOffloading(Action::OFK_OpenMP)) &&
7378 !(C.getDriver().embedBitcodeInObject() && !IsUsingLTO) &&
7379 isa<CompileJobAction>(JA))
7380 CmdArgs.push_back("-disable-llvm-passes");
7381
7382 Args.AddAllArgs(CmdArgs, options::OPT_undef);
7383
7384 const char *Exec = D.getClangProgramPath();
7385
7386 // Optionally embed the -cc1 level arguments into the debug info or a
7387 // section, for build analysis.
7388 // Also record command line arguments into the debug info if
7389 // -grecord-gcc-switches options is set on.
7390 // By default, -gno-record-gcc-switches is set on and no recording.
7391 auto GRecordSwitches =
7392 Args.hasFlag(options::OPT_grecord_command_line,
7393 options::OPT_gno_record_command_line, false);
7394 auto FRecordSwitches =
7395 Args.hasFlag(options::OPT_frecord_command_line,
7396 options::OPT_fno_record_command_line, false);
7397 if (FRecordSwitches && !Triple.isOSBinFormatELF() &&
7398 !Triple.isOSBinFormatXCOFF() && !Triple.isOSBinFormatMachO())
7399 D.Diag(diag::err_drv_unsupported_opt_for_target)
7400 << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
7401 << TripleStr;
7402 if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
7403 ArgStringList OriginalArgs;
7404 for (const auto &Arg : Args)
7405 Arg->render(Args, OriginalArgs);
7406
7407 SmallString<256> Flags;
7408 EscapeSpacesAndBackslashes(Exec, Flags);
7409 for (const char *OriginalArg : OriginalArgs) {
7410 SmallString<128> EscapedArg;
7411 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
7412 Flags += " ";
7413 Flags += EscapedArg;
7414 }
7415 auto FlagsArgString = Args.MakeArgString(Flags);
7416 if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
7417 CmdArgs.push_back("-dwarf-debug-flags");
7418 CmdArgs.push_back(FlagsArgString);
7419 }
7420 if (FRecordSwitches) {
7421 CmdArgs.push_back("-record-command-line");
7422 CmdArgs.push_back(FlagsArgString);
7423 }
7424 }
7425
7426 // Host-side offloading compilation receives all device-side outputs. Include
7427 // them in the host compilation depending on the target. If the host inputs
7428 // are not empty we use the new-driver scheme, otherwise use the old scheme.
7429 if ((IsCuda || IsHIP) && CudaDeviceInput) {
7430 CmdArgs.push_back("-fcuda-include-gpubinary");
7431 CmdArgs.push_back(CudaDeviceInput->getFilename());
7432 } else if (!HostOffloadingInputs.empty()) {
7433 if ((IsCuda || IsHIP) && !IsRDCMode) {
7434 assert(HostOffloadingInputs.size() == 1 && "Only one input expected");
7435 CmdArgs.push_back("-fcuda-include-gpubinary");
7436 CmdArgs.push_back(HostOffloadingInputs.front().getFilename());
7437 } else {
7438 for (const InputInfo Input : HostOffloadingInputs)
7439 CmdArgs.push_back(Args.MakeArgString("-fembed-offload-object=" +
7440 TC.getInputFilename(Input)));
7441 }
7442 }
7443
7444 if (IsCuda) {
7445 if (Args.hasFlag(options::OPT_fcuda_short_ptr,
7446 options::OPT_fno_cuda_short_ptr, false))
7447 CmdArgs.push_back("-fcuda-short-ptr");
7448 }
7449
7450 if (IsCuda || IsHIP) {
7451 // Determine the original source input.
7452 const Action *SourceAction = &JA;
7453 while (SourceAction->getKind() != Action::InputClass) {
7454 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
7455 SourceAction = SourceAction->getInputs()[0];
7456 }
7457 auto CUID = cast<InputAction>(SourceAction)->getId();
7458 if (!CUID.empty())
7459 CmdArgs.push_back(Args.MakeArgString(Twine("-cuid=") + Twine(CUID)));
7460
7461 // -ffast-math turns on -fgpu-approx-transcendentals implicitly, but will
7462 // be overriden by -fno-gpu-approx-transcendentals.
7463 bool UseApproxTranscendentals = Args.hasFlag(
7464 options::OPT_ffast_math, options::OPT_fno_fast_math, false);
7465 if (Args.hasFlag(options::OPT_fgpu_approx_transcendentals,
7466 options::OPT_fno_gpu_approx_transcendentals,
7467 UseApproxTranscendentals))
7468 CmdArgs.push_back("-fgpu-approx-transcendentals");
7469 } else {
7470 Args.claimAllArgs(options::OPT_fgpu_approx_transcendentals,
7471 options::OPT_fno_gpu_approx_transcendentals);
7472 }
7473
7474 if (IsHIP) {
7475 CmdArgs.push_back("-fcuda-allow-variadic-functions");
7476 Args.AddLastArg(CmdArgs, options::OPT_fgpu_default_stream_EQ);
7477 }
7478
7479 Args.AddLastArg(CmdArgs, options::OPT_foffload_uniform_block,
7480 options::OPT_fno_offload_uniform_block);
7481
7482 Args.AddLastArg(CmdArgs, options::OPT_foffload_implicit_host_device_templates,
7483 options::OPT_fno_offload_implicit_host_device_templates);
7484
7485 if (IsCudaDevice || IsHIPDevice) {
7486 StringRef InlineThresh =
7487 Args.getLastArgValue(options::OPT_fgpu_inline_threshold_EQ);
7488 if (!InlineThresh.empty()) {
7489 std::string ArgStr =
7490 std::string("-inline-threshold=") + InlineThresh.str();
7491 CmdArgs.append({"-mllvm", Args.MakeArgStringRef(ArgStr)});
7492 }
7493 }
7494
7495 if (IsHIPDevice)
7496 Args.addOptOutFlag(CmdArgs,
7497 options::OPT_fhip_fp32_correctly_rounded_divide_sqrt,
7498 options::OPT_fno_hip_fp32_correctly_rounded_divide_sqrt);
7499
7500 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
7501 // to specify the result of the compile phase on the host, so the meaningful
7502 // device declarations can be identified. Also, -fopenmp-is-target-device is
7503 // passed along to tell the frontend that it is generating code for a device,
7504 // so that only the relevant declarations are emitted.
7505 if (IsOpenMPDevice) {
7506 CmdArgs.push_back("-fopenmp-is-target-device");
7507 if (OpenMPDeviceInput) {
7508 CmdArgs.push_back("-fopenmp-host-ir-file-path");
7509 CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
7510 }
7511 }
7512
7513 if (Triple.isAMDGPU()) {
7514 handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs);
7515
7516 Args.addOptInFlag(CmdArgs, options::OPT_munsafe_fp_atomics,
7517 options::OPT_mno_unsafe_fp_atomics);
7518 Args.addOptOutFlag(CmdArgs, options::OPT_mamdgpu_ieee,
7519 options::OPT_mno_amdgpu_ieee);
7520 }
7521
7522 // For all the host OpenMP offloading compile jobs we need to pass the targets
7523 // information using -fopenmp-targets= option.
7524 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
7525 SmallString<128> Targets("-fopenmp-targets=");
7526
7527 SmallVector<std::string, 4> Triples;
7528 auto TCRange = C.getOffloadToolChains<Action::OFK_OpenMP>();
7529 std::transform(TCRange.first, TCRange.second, std::back_inserter(Triples),
7530 [](auto TC) { return TC.second->getTripleString(); });
7531 CmdArgs.push_back(Args.MakeArgString(Targets + llvm::join(Triples, ",")));
7532 }
7533
7534 bool VirtualFunctionElimination =
7535 Args.hasFlag(options::OPT_fvirtual_function_elimination,
7536 options::OPT_fno_virtual_function_elimination, false);
7537 if (VirtualFunctionElimination) {
7538 // VFE requires full LTO (currently, this might be relaxed to allow ThinLTO
7539 // in the future).
7540 if (LTOMode != LTOK_Full)
7541 D.Diag(diag::err_drv_argument_only_allowed_with)
7542 << "-fvirtual-function-elimination"
7543 << "-flto=full";
7544
7545 CmdArgs.push_back("-fvirtual-function-elimination");
7546 }
7547
7548 // VFE requires whole-program-vtables, and enables it by default.
7549 bool WholeProgramVTables = Args.hasFlag(
7550 options::OPT_fwhole_program_vtables,
7551 options::OPT_fno_whole_program_vtables, VirtualFunctionElimination);
7552 if (VirtualFunctionElimination && !WholeProgramVTables) {
7553 D.Diag(diag::err_drv_argument_not_allowed_with)
7554 << "-fno-whole-program-vtables"
7555 << "-fvirtual-function-elimination";
7556 }
7557
7558 if (WholeProgramVTables) {
7559 // PS4 uses the legacy LTO API, which does not support this feature in
7560 // ThinLTO mode.
7561 bool IsPS4 = getToolChain().getTriple().isPS4();
7562
7563 // Check if we passed LTO options but they were suppressed because this is a
7564 // device offloading action, or we passed device offload LTO options which
7565 // were suppressed because this is not the device offload action.
7566 // Check if we are using PS4 in regular LTO mode.
7567 // Otherwise, issue an error.
7568 if ((!IsUsingLTO && !D.isUsingLTO(!IsDeviceOffloadAction)) ||
7569 (IsPS4 && !UnifiedLTO && (D.getLTOMode() != LTOK_Full)))
7570 D.Diag(diag::err_drv_argument_only_allowed_with)
7571 << "-fwhole-program-vtables"
7572 << ((IsPS4 && !UnifiedLTO) ? "-flto=full" : "-flto");
7573
7574 // Propagate -fwhole-program-vtables if this is an LTO compile.
7575 if (IsUsingLTO)
7576 CmdArgs.push_back("-fwhole-program-vtables");
7577 }
7578
7579 bool DefaultsSplitLTOUnit =
7580 ((WholeProgramVTables || SanitizeArgs.needsLTO()) &&
7581 (LTOMode == LTOK_Full || TC.canSplitThinLTOUnit())) ||
7582 (!Triple.isPS4() && UnifiedLTO);
7583 bool SplitLTOUnit =
7584 Args.hasFlag(options::OPT_fsplit_lto_unit,
7585 options::OPT_fno_split_lto_unit, DefaultsSplitLTOUnit);
7586 if (SanitizeArgs.needsLTO() && !SplitLTOUnit)
7587 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fno-split-lto-unit"
7588 << "-fsanitize=cfi";
7589 if (SplitLTOUnit)
7590 CmdArgs.push_back("-fsplit-lto-unit");
7591
7592 if (Arg *A = Args.getLastArg(options::OPT_ffat_lto_objects,
7593 options::OPT_fno_fat_lto_objects)) {
7594 if (IsUsingLTO && A->getOption().matches(options::OPT_ffat_lto_objects)) {
7595 assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);
7596 if (!Triple.isOSBinFormatELF()) {
7597 D.Diag(diag::err_drv_unsupported_opt_for_target)
7598 << A->getAsString(Args) << TC.getTripleString();
7599 }
7600 CmdArgs.push_back(Args.MakeArgString(
7601 Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));
7602 CmdArgs.push_back("-flto-unit");
7603 CmdArgs.push_back("-ffat-lto-objects");
7604 A->render(Args, CmdArgs);
7605 }
7606 }
7607
7608 if (Arg *A = Args.getLastArg(options::OPT_fglobal_isel,
7609 options::OPT_fno_global_isel)) {
7610 CmdArgs.push_back("-mllvm");
7611 if (A->getOption().matches(options::OPT_fglobal_isel)) {
7612 CmdArgs.push_back("-global-isel=1");
7613
7614 // GISel is on by default on AArch64 -O0, so don't bother adding
7615 // the fallback remarks for it. Other combinations will add a warning of
7616 // some kind.
7617 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
7618 bool IsOptLevelSupported = false;
7619
7620 Arg *A = Args.getLastArg(options::OPT_O_Group);
7621 if (Triple.getArch() == llvm::Triple::aarch64) {
7622 if (!A || A->getOption().matches(options::OPT_O0))
7623 IsOptLevelSupported = true;
7624 }
7625 if (!IsArchSupported || !IsOptLevelSupported) {
7626 CmdArgs.push_back("-mllvm");
7627 CmdArgs.push_back("-global-isel-abort=2");
7628
7629 if (!IsArchSupported)
7630 D.Diag(diag::warn_drv_global_isel_incomplete) << Triple.getArchName();
7631 else
7632 D.Diag(diag::warn_drv_global_isel_incomplete_opt);
7633 }
7634 } else {
7635 CmdArgs.push_back("-global-isel=0");
7636 }
7637 }
7638
7639 if (Args.hasArg(options::OPT_forder_file_instrumentation)) {
7640 CmdArgs.push_back("-forder-file-instrumentation");
7641 // Enable order file instrumentation when ThinLTO is not on. When ThinLTO is
7642 // on, we need to pass these flags as linker flags and that will be handled
7643 // outside of the compiler.
7644 if (!IsUsingLTO) {
7645 CmdArgs.push_back("-mllvm");
7646 CmdArgs.push_back("-enable-order-file-instrumentation");
7647 }
7648 }
7649
7650 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
7651 options::OPT_fno_force_enable_int128)) {
7652 if (A->getOption().matches(options::OPT_fforce_enable_int128))
7653 CmdArgs.push_back("-fforce-enable-int128");
7654 }
7655
7656 Args.addOptInFlag(CmdArgs, options::OPT_fkeep_static_consts,
7657 options::OPT_fno_keep_static_consts);
7658 Args.addOptInFlag(CmdArgs, options::OPT_fkeep_persistent_storage_variables,
7659 options::OPT_fno_keep_persistent_storage_variables);
7660 Args.addOptInFlag(CmdArgs, options::OPT_fcomplete_member_pointers,
7661 options::OPT_fno_complete_member_pointers);
7662 Args.addOptOutFlag(CmdArgs, options::OPT_fcxx_static_destructors,
7663 options::OPT_fno_cxx_static_destructors);
7664
7665 addMachineOutlinerArgs(D, Args, CmdArgs, Triple, /*IsLTO=*/false);
7666
7667 if (Arg *A = Args.getLastArg(options::OPT_moutline_atomics,
7668 options::OPT_mno_outline_atomics)) {
7669 // Option -moutline-atomics supported for AArch64 target only.
7670 if (!Triple.isAArch64()) {
7671 D.Diag(diag::warn_drv_moutline_atomics_unsupported_opt)
7672 << Triple.getArchName() << A->getOption().getName();
7673 } else {
7674 if (A->getOption().matches(options::OPT_moutline_atomics)) {
7675 CmdArgs.push_back("-target-feature");
7676 CmdArgs.push_back("+outline-atomics");
7677 } else {
7678 CmdArgs.push_back("-target-feature");
7679 CmdArgs.push_back("-outline-atomics");
7680 }
7681 }
7682 } else if (Triple.isAArch64() &&
7683 getToolChain().IsAArch64OutlineAtomicsDefault(Args)) {
7684 CmdArgs.push_back("-target-feature");
7685 CmdArgs.push_back("+outline-atomics");
7686 }
7687
7688 if (Triple.isAArch64() &&
7689 (Args.hasArg(options::OPT_mno_fmv) ||
7690 (Triple.isAndroid() && Triple.isAndroidVersionLT(23)) ||
7691 getToolChain().GetRuntimeLibType(Args) != ToolChain::RLT_CompilerRT)) {
7692 // Disable Function Multiversioning on AArch64 target.
7693 CmdArgs.push_back("-target-feature");
7694 CmdArgs.push_back("-fmv");
7695 }
7696
7697 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
7698 (TC.getTriple().isOSBinFormatELF() ||
7699 TC.getTriple().isOSBinFormatCOFF()) &&
7700 !TC.getTriple().isPS4() && !TC.getTriple().isVE() &&
7701 !TC.getTriple().isOSNetBSD() &&
7702 !Distro(D.getVFS(), TC.getTriple()).IsGentoo() &&
7703 !TC.getTriple().isAndroid() && TC.useIntegratedAs()))
7704 CmdArgs.push_back("-faddrsig");
7705
7706 if ((Triple.isOSBinFormatELF() || Triple.isOSBinFormatMachO()) &&
7707 (EH || UnwindTables || AsyncUnwindTables ||
7708 DebugInfoKind != llvm::codegenoptions::NoDebugInfo))
7709 CmdArgs.push_back("-D__GCC_HAVE_DWARF2_CFI_ASM=1");
7710
7711 if (Arg *A = Args.getLastArg(options::OPT_fsymbol_partition_EQ)) {
7712 std::string Str = A->getAsString(Args);
7713 if (!TC.getTriple().isOSBinFormatELF())
7714 D.Diag(diag::err_drv_unsupported_opt_for_target)
7715 << Str << TC.getTripleString();
7716 CmdArgs.push_back(Args.MakeArgString(Str));
7717 }
7718
7719 // Add the "-o out -x type src.c" flags last. This is done primarily to make
7720 // the -cc1 command easier to edit when reproducing compiler crashes.
7721 if (Output.getType() == types::TY_Dependencies) {
7722 // Handled with other dependency code.
7723 } else if (Output.isFilename()) {
7724 if (Output.getType() == clang::driver::types::TY_IFS_CPP ||
7725 Output.getType() == clang::driver::types::TY_IFS) {
7726 SmallString<128> OutputFilename(Output.getFilename());
7727 llvm::sys::path::replace_extension(OutputFilename, "ifs");
7728 CmdArgs.push_back("-o");
7729 CmdArgs.push_back(Args.MakeArgString(OutputFilename));
7730 } else {
7731 CmdArgs.push_back("-o");
7732 CmdArgs.push_back(Output.getFilename());
7733 }
7734 } else {
7735 assert(Output.isNothing() && "Invalid output.");
7736 }
7737
7738 addDashXForInput(Args, Input, CmdArgs);
7739
7740 ArrayRef<InputInfo> FrontendInputs = Input;
7741 if (IsExtractAPI)
7742 FrontendInputs = ExtractAPIInputs;
7743 else if (Input.isNothing())
7744 FrontendInputs = {};
7745
7746 for (const InputInfo &Input : FrontendInputs) {
7747 if (Input.isFilename())
7748 CmdArgs.push_back(Input.getFilename());
7749 else
7750 Input.getInputArg().renderAsInput(Args, CmdArgs);
7751 }
7752
7753 if (D.CC1Main && !D.CCGenDiagnostics) {
7754 // Invoke the CC1 directly in this process
7755 C.addCommand(std::make_unique<CC1Command>(
7756 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,
7757 Output, D.getPrependArg()));
7758 } else {
7759 C.addCommand(std::make_unique<Command>(
7760 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,
7761 Output, D.getPrependArg()));
7762 }
7763
7764 // Make the compile command echo its inputs for /showFilenames.
7765 if (Output.getType() == types::TY_Object &&
7766 Args.hasFlag(options::OPT__SLASH_showFilenames,
7767 options::OPT__SLASH_showFilenames_, false)) {
7768 C.getJobs().getJobs().back()->PrintInputFilenames = true;
7769 }
7770
7771 if (Arg *A = Args.getLastArg(options::OPT_pg))
7772 if (FPKeepKind == CodeGenOptions::FramePointerKind::None &&
7773 !Args.hasArg(options::OPT_mfentry))
7774 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
7775 << A->getAsString(Args);
7776
7777 // Claim some arguments which clang supports automatically.
7778
7779 // -fpch-preprocess is used with gcc to add a special marker in the output to
7780 // include the PCH file.
7781 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
7782
7783 // Claim some arguments which clang doesn't support, but we don't
7784 // care to warn the user about.
7785 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
7786 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
7787
7788 // Disable warnings for clang -E -emit-llvm foo.c
7789 Args.ClaimAllArgs(options::OPT_emit_llvm);
7790 }
7791
Clang(const ToolChain & TC,bool HasIntegratedBackend)7792 Clang::Clang(const ToolChain &TC, bool HasIntegratedBackend)
7793 // CAUTION! The first constructor argument ("clang") is not arbitrary,
7794 // as it is for other tools. Some operations on a Tool actually test
7795 // whether that tool is Clang based on the Tool's Name as a string.
7796 : Tool("clang", "clang frontend", TC), HasBackend(HasIntegratedBackend) {}
7797
~Clang()7798 Clang::~Clang() {}
7799
7800 /// Add options related to the Objective-C runtime/ABI.
7801 ///
7802 /// Returns true if the runtime is non-fragile.
AddObjCRuntimeArgs(const ArgList & args,const InputInfoList & inputs,ArgStringList & cmdArgs,RewriteKind rewriteKind) const7803 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
7804 const InputInfoList &inputs,
7805 ArgStringList &cmdArgs,
7806 RewriteKind rewriteKind) const {
7807 // Look for the controlling runtime option.
7808 Arg *runtimeArg =
7809 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
7810 options::OPT_fobjc_runtime_EQ);
7811
7812 // Just forward -fobjc-runtime= to the frontend. This supercedes
7813 // options about fragility.
7814 if (runtimeArg &&
7815 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
7816 ObjCRuntime runtime;
7817 StringRef value = runtimeArg->getValue();
7818 if (runtime.tryParse(value)) {
7819 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
7820 << value;
7821 }
7822 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
7823 (runtime.getVersion() >= VersionTuple(2, 0)))
7824 if (!getToolChain().getTriple().isOSBinFormatELF() &&
7825 !getToolChain().getTriple().isOSBinFormatCOFF()) {
7826 getToolChain().getDriver().Diag(
7827 diag::err_drv_gnustep_objc_runtime_incompatible_binary)
7828 << runtime.getVersion().getMajor();
7829 }
7830
7831 runtimeArg->render(args, cmdArgs);
7832 return runtime;
7833 }
7834
7835 // Otherwise, we'll need the ABI "version". Version numbers are
7836 // slightly confusing for historical reasons:
7837 // 1 - Traditional "fragile" ABI
7838 // 2 - Non-fragile ABI, version 1
7839 // 3 - Non-fragile ABI, version 2
7840 unsigned objcABIVersion = 1;
7841 // If -fobjc-abi-version= is present, use that to set the version.
7842 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
7843 StringRef value = abiArg->getValue();
7844 if (value == "1")
7845 objcABIVersion = 1;
7846 else if (value == "2")
7847 objcABIVersion = 2;
7848 else if (value == "3")
7849 objcABIVersion = 3;
7850 else
7851 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
7852 } else {
7853 // Otherwise, determine if we are using the non-fragile ABI.
7854 bool nonFragileABIIsDefault =
7855 (rewriteKind == RK_NonFragile ||
7856 (rewriteKind == RK_None &&
7857 getToolChain().IsObjCNonFragileABIDefault()));
7858 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
7859 options::OPT_fno_objc_nonfragile_abi,
7860 nonFragileABIIsDefault)) {
7861 // Determine the non-fragile ABI version to use.
7862 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
7863 unsigned nonFragileABIVersion = 1;
7864 #else
7865 unsigned nonFragileABIVersion = 2;
7866 #endif
7867
7868 if (Arg *abiArg =
7869 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
7870 StringRef value = abiArg->getValue();
7871 if (value == "1")
7872 nonFragileABIVersion = 1;
7873 else if (value == "2")
7874 nonFragileABIVersion = 2;
7875 else
7876 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
7877 << value;
7878 }
7879
7880 objcABIVersion = 1 + nonFragileABIVersion;
7881 } else {
7882 objcABIVersion = 1;
7883 }
7884 }
7885
7886 // We don't actually care about the ABI version other than whether
7887 // it's non-fragile.
7888 bool isNonFragile = objcABIVersion != 1;
7889
7890 // If we have no runtime argument, ask the toolchain for its default runtime.
7891 // However, the rewriter only really supports the Mac runtime, so assume that.
7892 ObjCRuntime runtime;
7893 if (!runtimeArg) {
7894 switch (rewriteKind) {
7895 case RK_None:
7896 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
7897 break;
7898 case RK_Fragile:
7899 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
7900 break;
7901 case RK_NonFragile:
7902 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
7903 break;
7904 }
7905
7906 // -fnext-runtime
7907 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
7908 // On Darwin, make this use the default behavior for the toolchain.
7909 if (getToolChain().getTriple().isOSDarwin()) {
7910 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
7911
7912 // Otherwise, build for a generic macosx port.
7913 } else {
7914 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
7915 }
7916
7917 // -fgnu-runtime
7918 } else {
7919 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
7920 // Legacy behaviour is to target the gnustep runtime if we are in
7921 // non-fragile mode or the GCC runtime in fragile mode.
7922 if (isNonFragile)
7923 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
7924 else
7925 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
7926 }
7927
7928 if (llvm::any_of(inputs, [](const InputInfo &input) {
7929 return types::isObjC(input.getType());
7930 }))
7931 cmdArgs.push_back(
7932 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
7933 return runtime;
7934 }
7935
maybeConsumeDash(const std::string & EH,size_t & I)7936 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
7937 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
7938 I += HaveDash;
7939 return !HaveDash;
7940 }
7941
7942 namespace {
7943 struct EHFlags {
7944 bool Synch = false;
7945 bool Asynch = false;
7946 bool NoUnwindC = false;
7947 };
7948 } // end anonymous namespace
7949
7950 /// /EH controls whether to run destructor cleanups when exceptions are
7951 /// thrown. There are three modifiers:
7952 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
7953 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
7954 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
7955 /// - c: Assume that extern "C" functions are implicitly nounwind.
7956 /// The default is /EHs-c-, meaning cleanups are disabled.
parseClangCLEHFlags(const Driver & D,const ArgList & Args)7957 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
7958 EHFlags EH;
7959
7960 std::vector<std::string> EHArgs =
7961 Args.getAllArgValues(options::OPT__SLASH_EH);
7962 for (auto EHVal : EHArgs) {
7963 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
7964 switch (EHVal[I]) {
7965 case 'a':
7966 EH.Asynch = maybeConsumeDash(EHVal, I);
7967 if (EH.Asynch)
7968 EH.Synch = false;
7969 continue;
7970 case 'c':
7971 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
7972 continue;
7973 case 's':
7974 EH.Synch = maybeConsumeDash(EHVal, I);
7975 if (EH.Synch)
7976 EH.Asynch = false;
7977 continue;
7978 default:
7979 break;
7980 }
7981 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
7982 break;
7983 }
7984 }
7985 // The /GX, /GX- flags are only processed if there are not /EH flags.
7986 // The default is that /GX is not specified.
7987 if (EHArgs.empty() &&
7988 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
7989 /*Default=*/false)) {
7990 EH.Synch = true;
7991 EH.NoUnwindC = true;
7992 }
7993
7994 if (Args.hasArg(options::OPT__SLASH_kernel)) {
7995 EH.Synch = false;
7996 EH.NoUnwindC = false;
7997 EH.Asynch = false;
7998 }
7999
8000 return EH;
8001 }
8002
AddClangCLArgs(const ArgList & Args,types::ID InputType,ArgStringList & CmdArgs) const8003 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
8004 ArgStringList &CmdArgs) const {
8005 bool isNVPTX = getToolChain().getTriple().isNVPTX();
8006
8007 ProcessVSRuntimeLibrary(Args, CmdArgs);
8008
8009 if (Arg *ShowIncludes =
8010 Args.getLastArg(options::OPT__SLASH_showIncludes,
8011 options::OPT__SLASH_showIncludes_user)) {
8012 CmdArgs.push_back("--show-includes");
8013 if (ShowIncludes->getOption().matches(options::OPT__SLASH_showIncludes))
8014 CmdArgs.push_back("-sys-header-deps");
8015 }
8016
8017 // This controls whether or not we emit RTTI data for polymorphic types.
8018 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
8019 /*Default=*/false))
8020 CmdArgs.push_back("-fno-rtti-data");
8021
8022 // This controls whether or not we emit stack-protector instrumentation.
8023 // In MSVC, Buffer Security Check (/GS) is on by default.
8024 if (!isNVPTX && Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
8025 /*Default=*/true)) {
8026 CmdArgs.push_back("-stack-protector");
8027 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
8028 }
8029
8030 const Driver &D = getToolChain().getDriver();
8031
8032 EHFlags EH = parseClangCLEHFlags(D, Args);
8033 if (!isNVPTX && (EH.Synch || EH.Asynch)) {
8034 if (types::isCXX(InputType))
8035 CmdArgs.push_back("-fcxx-exceptions");
8036 CmdArgs.push_back("-fexceptions");
8037 if (EH.Asynch)
8038 CmdArgs.push_back("-fasync-exceptions");
8039 }
8040 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
8041 CmdArgs.push_back("-fexternc-nounwind");
8042
8043 // /EP should expand to -E -P.
8044 if (Args.hasArg(options::OPT__SLASH_EP)) {
8045 CmdArgs.push_back("-E");
8046 CmdArgs.push_back("-P");
8047 }
8048
8049 if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
8050 options::OPT__SLASH_Zc_dllexportInlines,
8051 false)) {
8052 CmdArgs.push_back("-fno-dllexport-inlines");
8053 }
8054
8055 if (Args.hasFlag(options::OPT__SLASH_Zc_wchar_t_,
8056 options::OPT__SLASH_Zc_wchar_t, false)) {
8057 CmdArgs.push_back("-fno-wchar");
8058 }
8059
8060 if (Args.hasArg(options::OPT__SLASH_kernel)) {
8061 llvm::Triple::ArchType Arch = getToolChain().getArch();
8062 std::vector<std::string> Values =
8063 Args.getAllArgValues(options::OPT__SLASH_arch);
8064 if (!Values.empty()) {
8065 llvm::SmallSet<std::string, 4> SupportedArches;
8066 if (Arch == llvm::Triple::x86)
8067 SupportedArches.insert("IA32");
8068
8069 for (auto &V : Values)
8070 if (!SupportedArches.contains(V))
8071 D.Diag(diag::err_drv_argument_not_allowed_with)
8072 << std::string("/arch:").append(V) << "/kernel";
8073 }
8074
8075 CmdArgs.push_back("-fno-rtti");
8076 if (Args.hasFlag(options::OPT__SLASH_GR, options::OPT__SLASH_GR_, false))
8077 D.Diag(diag::err_drv_argument_not_allowed_with) << "/GR"
8078 << "/kernel";
8079 }
8080
8081 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
8082 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
8083 if (MostGeneralArg && BestCaseArg)
8084 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
8085 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
8086
8087 if (MostGeneralArg) {
8088 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
8089 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
8090 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
8091
8092 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
8093 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
8094 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
8095 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
8096 << FirstConflict->getAsString(Args)
8097 << SecondConflict->getAsString(Args);
8098
8099 if (SingleArg)
8100 CmdArgs.push_back("-fms-memptr-rep=single");
8101 else if (MultipleArg)
8102 CmdArgs.push_back("-fms-memptr-rep=multiple");
8103 else
8104 CmdArgs.push_back("-fms-memptr-rep=virtual");
8105 }
8106
8107 if (Args.hasArg(options::OPT_regcall4))
8108 CmdArgs.push_back("-regcall4");
8109
8110 // Parse the default calling convention options.
8111 if (Arg *CCArg =
8112 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
8113 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
8114 options::OPT__SLASH_Gregcall)) {
8115 unsigned DCCOptId = CCArg->getOption().getID();
8116 const char *DCCFlag = nullptr;
8117 bool ArchSupported = !isNVPTX;
8118 llvm::Triple::ArchType Arch = getToolChain().getArch();
8119 switch (DCCOptId) {
8120 case options::OPT__SLASH_Gd:
8121 DCCFlag = "-fdefault-calling-conv=cdecl";
8122 break;
8123 case options::OPT__SLASH_Gr:
8124 ArchSupported = Arch == llvm::Triple::x86;
8125 DCCFlag = "-fdefault-calling-conv=fastcall";
8126 break;
8127 case options::OPT__SLASH_Gz:
8128 ArchSupported = Arch == llvm::Triple::x86;
8129 DCCFlag = "-fdefault-calling-conv=stdcall";
8130 break;
8131 case options::OPT__SLASH_Gv:
8132 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
8133 DCCFlag = "-fdefault-calling-conv=vectorcall";
8134 break;
8135 case options::OPT__SLASH_Gregcall:
8136 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
8137 DCCFlag = "-fdefault-calling-conv=regcall";
8138 break;
8139 }
8140
8141 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
8142 if (ArchSupported && DCCFlag)
8143 CmdArgs.push_back(DCCFlag);
8144 }
8145
8146 if (Args.hasArg(options::OPT__SLASH_Gregcall4))
8147 CmdArgs.push_back("-regcall4");
8148
8149 Args.AddLastArg(CmdArgs, options::OPT_vtordisp_mode_EQ);
8150
8151 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
8152 CmdArgs.push_back("-fdiagnostics-format");
8153 CmdArgs.push_back("msvc");
8154 }
8155
8156 if (Args.hasArg(options::OPT__SLASH_kernel))
8157 CmdArgs.push_back("-fms-kernel");
8158
8159 for (const Arg *A : Args.filtered(options::OPT__SLASH_guard)) {
8160 StringRef GuardArgs = A->getValue();
8161 // The only valid options are "cf", "cf,nochecks", "cf-", "ehcont" and
8162 // "ehcont-".
8163 if (GuardArgs.equals_insensitive("cf")) {
8164 // Emit CFG instrumentation and the table of address-taken functions.
8165 CmdArgs.push_back("-cfguard");
8166 } else if (GuardArgs.equals_insensitive("cf,nochecks")) {
8167 // Emit only the table of address-taken functions.
8168 CmdArgs.push_back("-cfguard-no-checks");
8169 } else if (GuardArgs.equals_insensitive("ehcont")) {
8170 // Emit EH continuation table.
8171 CmdArgs.push_back("-ehcontguard");
8172 } else if (GuardArgs.equals_insensitive("cf-") ||
8173 GuardArgs.equals_insensitive("ehcont-")) {
8174 // Do nothing, but we might want to emit a security warning in future.
8175 } else {
8176 D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << GuardArgs;
8177 }
8178 A->claim();
8179 }
8180 }
8181
getBaseInputName(const ArgList & Args,const InputInfo & Input)8182 const char *Clang::getBaseInputName(const ArgList &Args,
8183 const InputInfo &Input) {
8184 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
8185 }
8186
getBaseInputStem(const ArgList & Args,const InputInfoList & Inputs)8187 const char *Clang::getBaseInputStem(const ArgList &Args,
8188 const InputInfoList &Inputs) {
8189 const char *Str = getBaseInputName(Args, Inputs[0]);
8190
8191 if (const char *End = strrchr(Str, '.'))
8192 return Args.MakeArgString(std::string(Str, End));
8193
8194 return Str;
8195 }
8196
getDependencyFileName(const ArgList & Args,const InputInfoList & Inputs)8197 const char *Clang::getDependencyFileName(const ArgList &Args,
8198 const InputInfoList &Inputs) {
8199 // FIXME: Think about this more.
8200
8201 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
8202 SmallString<128> OutputFilename(OutputOpt->getValue());
8203 llvm::sys::path::replace_extension(OutputFilename, llvm::Twine('d'));
8204 return Args.MakeArgString(OutputFilename);
8205 }
8206
8207 return Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".d");
8208 }
8209
8210 // Begin ClangAs
8211
AddMIPSTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const8212 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
8213 ArgStringList &CmdArgs) const {
8214 StringRef CPUName;
8215 StringRef ABIName;
8216 const llvm::Triple &Triple = getToolChain().getTriple();
8217 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
8218
8219 CmdArgs.push_back("-target-abi");
8220 CmdArgs.push_back(ABIName.data());
8221 }
8222
AddX86TargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const8223 void ClangAs::AddX86TargetArgs(const ArgList &Args,
8224 ArgStringList &CmdArgs) const {
8225 addX86AlignBranchArgs(getToolChain().getDriver(), Args, CmdArgs,
8226 /*IsLTO=*/false);
8227
8228 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
8229 StringRef Value = A->getValue();
8230 if (Value == "intel" || Value == "att") {
8231 CmdArgs.push_back("-mllvm");
8232 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
8233 } else {
8234 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
8235 << A->getSpelling() << Value;
8236 }
8237 }
8238 }
8239
AddLoongArchTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const8240 void ClangAs::AddLoongArchTargetArgs(const ArgList &Args,
8241 ArgStringList &CmdArgs) const {
8242 CmdArgs.push_back("-target-abi");
8243 CmdArgs.push_back(loongarch::getLoongArchABI(getToolChain().getDriver(), Args,
8244 getToolChain().getTriple())
8245 .data());
8246 }
8247
AddRISCVTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const8248 void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
8249 ArgStringList &CmdArgs) const {
8250 const llvm::Triple &Triple = getToolChain().getTriple();
8251 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
8252
8253 CmdArgs.push_back("-target-abi");
8254 CmdArgs.push_back(ABIName.data());
8255
8256 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
8257 options::OPT_mno_default_build_attributes, true)) {
8258 CmdArgs.push_back("-mllvm");
8259 CmdArgs.push_back("-riscv-add-build-attributes");
8260 }
8261 }
8262
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const8263 void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
8264 const InputInfo &Output, const InputInfoList &Inputs,
8265 const ArgList &Args,
8266 const char *LinkingOutput) const {
8267 ArgStringList CmdArgs;
8268
8269 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
8270 const InputInfo &Input = Inputs[0];
8271
8272 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
8273 const std::string &TripleStr = Triple.getTriple();
8274 const auto &D = getToolChain().getDriver();
8275
8276 // Don't warn about "clang -w -c foo.s"
8277 Args.ClaimAllArgs(options::OPT_w);
8278 // and "clang -emit-llvm -c foo.s"
8279 Args.ClaimAllArgs(options::OPT_emit_llvm);
8280
8281 claimNoWarnArgs(Args);
8282
8283 // Invoke ourselves in -cc1as mode.
8284 //
8285 // FIXME: Implement custom jobs for internal actions.
8286 CmdArgs.push_back("-cc1as");
8287
8288 // Add the "effective" target triple.
8289 CmdArgs.push_back("-triple");
8290 CmdArgs.push_back(Args.MakeArgString(TripleStr));
8291
8292 getToolChain().addClangCC1ASTargetOptions(Args, CmdArgs);
8293
8294 // Set the output mode, we currently only expect to be used as a real
8295 // assembler.
8296 CmdArgs.push_back("-filetype");
8297 CmdArgs.push_back("obj");
8298
8299 // Set the main file name, so that debug info works even with
8300 // -save-temps or preprocessed assembly.
8301 CmdArgs.push_back("-main-file-name");
8302 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
8303
8304 // Add the target cpu
8305 std::string CPU = getCPUName(D, Args, Triple, /*FromAs*/ true);
8306 if (!CPU.empty()) {
8307 CmdArgs.push_back("-target-cpu");
8308 CmdArgs.push_back(Args.MakeArgString(CPU));
8309 }
8310
8311 // Add the target features
8312 getTargetFeatures(D, Triple, Args, CmdArgs, true);
8313
8314 // Ignore explicit -force_cpusubtype_ALL option.
8315 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
8316
8317 // Pass along any -I options so we get proper .include search paths.
8318 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
8319
8320 // Determine the original source input.
8321 auto FindSource = [](const Action *S) -> const Action * {
8322 while (S->getKind() != Action::InputClass) {
8323 assert(!S->getInputs().empty() && "unexpected root action!");
8324 S = S->getInputs()[0];
8325 }
8326 return S;
8327 };
8328 const Action *SourceAction = FindSource(&JA);
8329
8330 // Forward -g and handle debug info related flags, assuming we are dealing
8331 // with an actual assembly file.
8332 bool WantDebug = false;
8333 Args.ClaimAllArgs(options::OPT_g_Group);
8334 if (Arg *A = Args.getLastArg(options::OPT_g_Group))
8335 WantDebug = !A->getOption().matches(options::OPT_g0) &&
8336 !A->getOption().matches(options::OPT_ggdb0);
8337
8338 llvm::codegenoptions::DebugInfoKind DebugInfoKind =
8339 llvm::codegenoptions::NoDebugInfo;
8340
8341 // Add the -fdebug-compilation-dir flag if needed.
8342 const char *DebugCompilationDir =
8343 addDebugCompDirArg(Args, CmdArgs, C.getDriver().getVFS());
8344
8345 if (SourceAction->getType() == types::TY_Asm ||
8346 SourceAction->getType() == types::TY_PP_Asm) {
8347 // You might think that it would be ok to set DebugInfoKind outside of
8348 // the guard for source type, however there is a test which asserts
8349 // that some assembler invocation receives no -debug-info-kind,
8350 // and it's not clear whether that test is just overly restrictive.
8351 DebugInfoKind = (WantDebug ? llvm::codegenoptions::DebugInfoConstructor
8352 : llvm::codegenoptions::NoDebugInfo);
8353
8354 addDebugPrefixMapArg(getToolChain().getDriver(), getToolChain(), Args,
8355 CmdArgs);
8356
8357 // Set the AT_producer to the clang version when using the integrated
8358 // assembler on assembly source files.
8359 CmdArgs.push_back("-dwarf-debug-producer");
8360 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
8361
8362 // And pass along -I options
8363 Args.AddAllArgs(CmdArgs, options::OPT_I);
8364 }
8365 const unsigned DwarfVersion = getDwarfVersion(getToolChain(), Args);
8366 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
8367 llvm::DebuggerKind::Default);
8368 renderDwarfFormat(D, Triple, Args, CmdArgs, DwarfVersion);
8369 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
8370
8371 // Handle -fPIC et al -- the relocation-model affects the assembler
8372 // for some targets.
8373 llvm::Reloc::Model RelocationModel;
8374 unsigned PICLevel;
8375 bool IsPIE;
8376 std::tie(RelocationModel, PICLevel, IsPIE) =
8377 ParsePICArgs(getToolChain(), Args);
8378
8379 const char *RMName = RelocationModelName(RelocationModel);
8380 if (RMName) {
8381 CmdArgs.push_back("-mrelocation-model");
8382 CmdArgs.push_back(RMName);
8383 }
8384
8385 // Optionally embed the -cc1as level arguments into the debug info, for build
8386 // analysis.
8387 if (getToolChain().UseDwarfDebugFlags()) {
8388 ArgStringList OriginalArgs;
8389 for (const auto &Arg : Args)
8390 Arg->render(Args, OriginalArgs);
8391
8392 SmallString<256> Flags;
8393 const char *Exec = getToolChain().getDriver().getClangProgramPath();
8394 EscapeSpacesAndBackslashes(Exec, Flags);
8395 for (const char *OriginalArg : OriginalArgs) {
8396 SmallString<128> EscapedArg;
8397 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
8398 Flags += " ";
8399 Flags += EscapedArg;
8400 }
8401 CmdArgs.push_back("-dwarf-debug-flags");
8402 CmdArgs.push_back(Args.MakeArgString(Flags));
8403 }
8404
8405 // FIXME: Add -static support, once we have it.
8406
8407 // Add target specific flags.
8408 switch (getToolChain().getArch()) {
8409 default:
8410 break;
8411
8412 case llvm::Triple::mips:
8413 case llvm::Triple::mipsel:
8414 case llvm::Triple::mips64:
8415 case llvm::Triple::mips64el:
8416 AddMIPSTargetArgs(Args, CmdArgs);
8417 break;
8418
8419 case llvm::Triple::x86:
8420 case llvm::Triple::x86_64:
8421 AddX86TargetArgs(Args, CmdArgs);
8422 break;
8423
8424 case llvm::Triple::arm:
8425 case llvm::Triple::armeb:
8426 case llvm::Triple::thumb:
8427 case llvm::Triple::thumbeb:
8428 // This isn't in AddARMTargetArgs because we want to do this for assembly
8429 // only, not C/C++.
8430 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
8431 options::OPT_mno_default_build_attributes, true)) {
8432 CmdArgs.push_back("-mllvm");
8433 CmdArgs.push_back("-arm-add-build-attributes");
8434 }
8435 break;
8436
8437 case llvm::Triple::aarch64:
8438 case llvm::Triple::aarch64_32:
8439 case llvm::Triple::aarch64_be:
8440 if (Args.hasArg(options::OPT_mmark_bti_property)) {
8441 CmdArgs.push_back("-mllvm");
8442 CmdArgs.push_back("-aarch64-mark-bti-property");
8443 }
8444 break;
8445
8446 case llvm::Triple::loongarch32:
8447 case llvm::Triple::loongarch64:
8448 AddLoongArchTargetArgs(Args, CmdArgs);
8449 break;
8450
8451 case llvm::Triple::riscv32:
8452 case llvm::Triple::riscv64:
8453 AddRISCVTargetArgs(Args, CmdArgs);
8454 break;
8455 }
8456
8457 // Consume all the warning flags. Usually this would be handled more
8458 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
8459 // doesn't handle that so rather than warning about unused flags that are
8460 // actually used, we'll lie by omission instead.
8461 // FIXME: Stop lying and consume only the appropriate driver flags
8462 Args.ClaimAllArgs(options::OPT_W_Group);
8463
8464 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
8465 getToolChain().getDriver());
8466
8467 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
8468
8469 if (DebugInfoKind > llvm::codegenoptions::NoDebugInfo && Output.isFilename())
8470 addDebugObjectName(Args, CmdArgs, DebugCompilationDir,
8471 Output.getFilename());
8472
8473 // Fixup any previous commands that use -object-file-name because when we
8474 // generated them, the final .obj name wasn't yet known.
8475 for (Command &J : C.getJobs()) {
8476 if (SourceAction != FindSource(&J.getSource()))
8477 continue;
8478 auto &JArgs = J.getArguments();
8479 for (unsigned I = 0; I < JArgs.size(); ++I) {
8480 if (StringRef(JArgs[I]).starts_with("-object-file-name=") &&
8481 Output.isFilename()) {
8482 ArgStringList NewArgs(JArgs.begin(), JArgs.begin() + I);
8483 addDebugObjectName(Args, NewArgs, DebugCompilationDir,
8484 Output.getFilename());
8485 NewArgs.append(JArgs.begin() + I + 1, JArgs.end());
8486 J.replaceArguments(NewArgs);
8487 break;
8488 }
8489 }
8490 }
8491
8492 assert(Output.isFilename() && "Unexpected lipo output.");
8493 CmdArgs.push_back("-o");
8494 CmdArgs.push_back(Output.getFilename());
8495
8496 const llvm::Triple &T = getToolChain().getTriple();
8497 Arg *A;
8498 if (getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split &&
8499 T.isOSBinFormatELF()) {
8500 CmdArgs.push_back("-split-dwarf-output");
8501 CmdArgs.push_back(SplitDebugName(JA, Args, Input, Output));
8502 }
8503
8504 if (Triple.isAMDGPU())
8505 handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs, /*IsCC1As=*/true);
8506
8507 assert(Input.isFilename() && "Invalid input.");
8508 CmdArgs.push_back(Input.getFilename());
8509
8510 const char *Exec = getToolChain().getDriver().getClangProgramPath();
8511 if (D.CC1Main && !D.CCGenDiagnostics) {
8512 // Invoke cc1as directly in this process.
8513 C.addCommand(std::make_unique<CC1Command>(
8514 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,
8515 Output, D.getPrependArg()));
8516 } else {
8517 C.addCommand(std::make_unique<Command>(
8518 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,
8519 Output, D.getPrependArg()));
8520 }
8521 }
8522
8523 // Begin OffloadBundler
8524
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const llvm::opt::ArgList & TCArgs,const char * LinkingOutput) const8525 void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
8526 const InputInfo &Output,
8527 const InputInfoList &Inputs,
8528 const llvm::opt::ArgList &TCArgs,
8529 const char *LinkingOutput) const {
8530 // The version with only one output is expected to refer to a bundling job.
8531 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
8532
8533 // The bundling command looks like this:
8534 // clang-offload-bundler -type=bc
8535 // -targets=host-triple,openmp-triple1,openmp-triple2
8536 // -output=output_file
8537 // -input=unbundle_file_host
8538 // -input=unbundle_file_tgt1
8539 // -input=unbundle_file_tgt2
8540
8541 ArgStringList CmdArgs;
8542
8543 // Get the type.
8544 CmdArgs.push_back(TCArgs.MakeArgString(
8545 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
8546
8547 assert(JA.getInputs().size() == Inputs.size() &&
8548 "Not have inputs for all dependence actions??");
8549
8550 // Get the targets.
8551 SmallString<128> Triples;
8552 Triples += "-targets=";
8553 for (unsigned I = 0; I < Inputs.size(); ++I) {
8554 if (I)
8555 Triples += ',';
8556
8557 // Find ToolChain for this input.
8558 Action::OffloadKind CurKind = Action::OFK_Host;
8559 const ToolChain *CurTC = &getToolChain();
8560 const Action *CurDep = JA.getInputs()[I];
8561
8562 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
8563 CurTC = nullptr;
8564 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
8565 assert(CurTC == nullptr && "Expected one dependence!");
8566 CurKind = A->getOffloadingDeviceKind();
8567 CurTC = TC;
8568 });
8569 }
8570 Triples += Action::GetOffloadKindName(CurKind);
8571 Triples += '-';
8572 Triples += CurTC->getTriple().normalize();
8573 if ((CurKind == Action::OFK_HIP || CurKind == Action::OFK_Cuda) &&
8574 !StringRef(CurDep->getOffloadingArch()).empty()) {
8575 Triples += '-';
8576 Triples += CurDep->getOffloadingArch();
8577 }
8578
8579 // TODO: Replace parsing of -march flag. Can be done by storing GPUArch
8580 // with each toolchain.
8581 StringRef GPUArchName;
8582 if (CurKind == Action::OFK_OpenMP) {
8583 // Extract GPUArch from -march argument in TC argument list.
8584 for (unsigned ArgIndex = 0; ArgIndex < TCArgs.size(); ArgIndex++) {
8585 auto ArchStr = StringRef(TCArgs.getArgString(ArgIndex));
8586 auto Arch = ArchStr.starts_with_insensitive("-march=");
8587 if (Arch) {
8588 GPUArchName = ArchStr.substr(7);
8589 Triples += "-";
8590 break;
8591 }
8592 }
8593 Triples += GPUArchName.str();
8594 }
8595 }
8596 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
8597
8598 // Get bundled file command.
8599 CmdArgs.push_back(
8600 TCArgs.MakeArgString(Twine("-output=") + Output.getFilename()));
8601
8602 // Get unbundled files command.
8603 for (unsigned I = 0; I < Inputs.size(); ++I) {
8604 SmallString<128> UB;
8605 UB += "-input=";
8606
8607 // Find ToolChain for this input.
8608 const ToolChain *CurTC = &getToolChain();
8609 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
8610 CurTC = nullptr;
8611 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
8612 assert(CurTC == nullptr && "Expected one dependence!");
8613 CurTC = TC;
8614 });
8615 UB += C.addTempFile(
8616 C.getArgs().MakeArgString(CurTC->getInputFilename(Inputs[I])));
8617 } else {
8618 UB += CurTC->getInputFilename(Inputs[I]);
8619 }
8620 CmdArgs.push_back(TCArgs.MakeArgString(UB));
8621 }
8622 if (TCArgs.hasFlag(options::OPT_offload_compress,
8623 options::OPT_no_offload_compress, false))
8624 CmdArgs.push_back("-compress");
8625 if (TCArgs.hasArg(options::OPT_v))
8626 CmdArgs.push_back("-verbose");
8627 // All the inputs are encoded as commands.
8628 C.addCommand(std::make_unique<Command>(
8629 JA, *this, ResponseFileSupport::None(),
8630 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
8631 CmdArgs, std::nullopt, Output));
8632 }
8633
ConstructJobMultipleOutputs(Compilation & C,const JobAction & JA,const InputInfoList & Outputs,const InputInfoList & Inputs,const llvm::opt::ArgList & TCArgs,const char * LinkingOutput) const8634 void OffloadBundler::ConstructJobMultipleOutputs(
8635 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
8636 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
8637 const char *LinkingOutput) const {
8638 // The version with multiple outputs is expected to refer to a unbundling job.
8639 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
8640
8641 // The unbundling command looks like this:
8642 // clang-offload-bundler -type=bc
8643 // -targets=host-triple,openmp-triple1,openmp-triple2
8644 // -input=input_file
8645 // -output=unbundle_file_host
8646 // -output=unbundle_file_tgt1
8647 // -output=unbundle_file_tgt2
8648 // -unbundle
8649
8650 ArgStringList CmdArgs;
8651
8652 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
8653 InputInfo Input = Inputs.front();
8654
8655 // Get the type.
8656 CmdArgs.push_back(TCArgs.MakeArgString(
8657 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
8658
8659 // Get the targets.
8660 SmallString<128> Triples;
8661 Triples += "-targets=";
8662 auto DepInfo = UA.getDependentActionsInfo();
8663 for (unsigned I = 0; I < DepInfo.size(); ++I) {
8664 if (I)
8665 Triples += ',';
8666
8667 auto &Dep = DepInfo[I];
8668 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
8669 Triples += '-';
8670 Triples += Dep.DependentToolChain->getTriple().normalize();
8671 if ((Dep.DependentOffloadKind == Action::OFK_HIP ||
8672 Dep.DependentOffloadKind == Action::OFK_Cuda) &&
8673 !Dep.DependentBoundArch.empty()) {
8674 Triples += '-';
8675 Triples += Dep.DependentBoundArch;
8676 }
8677 // TODO: Replace parsing of -march flag. Can be done by storing GPUArch
8678 // with each toolchain.
8679 StringRef GPUArchName;
8680 if (Dep.DependentOffloadKind == Action::OFK_OpenMP) {
8681 // Extract GPUArch from -march argument in TC argument list.
8682 for (unsigned ArgIndex = 0; ArgIndex < TCArgs.size(); ArgIndex++) {
8683 StringRef ArchStr = StringRef(TCArgs.getArgString(ArgIndex));
8684 auto Arch = ArchStr.starts_with_insensitive("-march=");
8685 if (Arch) {
8686 GPUArchName = ArchStr.substr(7);
8687 Triples += "-";
8688 break;
8689 }
8690 }
8691 Triples += GPUArchName.str();
8692 }
8693 }
8694
8695 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
8696
8697 // Get bundled file command.
8698 CmdArgs.push_back(
8699 TCArgs.MakeArgString(Twine("-input=") + Input.getFilename()));
8700
8701 // Get unbundled files command.
8702 for (unsigned I = 0; I < Outputs.size(); ++I) {
8703 SmallString<128> UB;
8704 UB += "-output=";
8705 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
8706 CmdArgs.push_back(TCArgs.MakeArgString(UB));
8707 }
8708 CmdArgs.push_back("-unbundle");
8709 CmdArgs.push_back("-allow-missing-bundles");
8710 if (TCArgs.hasArg(options::OPT_v))
8711 CmdArgs.push_back("-verbose");
8712
8713 // All the inputs are encoded as commands.
8714 C.addCommand(std::make_unique<Command>(
8715 JA, *this, ResponseFileSupport::None(),
8716 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
8717 CmdArgs, std::nullopt, Outputs));
8718 }
8719
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const llvm::opt::ArgList & Args,const char * LinkingOutput) const8720 void OffloadPackager::ConstructJob(Compilation &C, const JobAction &JA,
8721 const InputInfo &Output,
8722 const InputInfoList &Inputs,
8723 const llvm::opt::ArgList &Args,
8724 const char *LinkingOutput) const {
8725 ArgStringList CmdArgs;
8726
8727 // Add the output file name.
8728 assert(Output.isFilename() && "Invalid output.");
8729 CmdArgs.push_back("-o");
8730 CmdArgs.push_back(Output.getFilename());
8731
8732 // Create the inputs to bundle the needed metadata.
8733 for (const InputInfo &Input : Inputs) {
8734 const Action *OffloadAction = Input.getAction();
8735 const ToolChain *TC = OffloadAction->getOffloadingToolChain();
8736 const ArgList &TCArgs =
8737 C.getArgsForToolChain(TC, OffloadAction->getOffloadingArch(),
8738 OffloadAction->getOffloadingDeviceKind());
8739 StringRef File = C.getArgs().MakeArgString(TC->getInputFilename(Input));
8740 StringRef Arch = OffloadAction->getOffloadingArch()
8741 ? OffloadAction->getOffloadingArch()
8742 : TCArgs.getLastArgValue(options::OPT_march_EQ);
8743 StringRef Kind =
8744 Action::GetOffloadKindName(OffloadAction->getOffloadingDeviceKind());
8745
8746 ArgStringList Features;
8747 SmallVector<StringRef> FeatureArgs;
8748 getTargetFeatures(TC->getDriver(), TC->getTriple(), TCArgs, Features,
8749 false);
8750 llvm::copy_if(Features, std::back_inserter(FeatureArgs),
8751 [](StringRef Arg) { return !Arg.starts_with("-target"); });
8752
8753 if (TC->getTriple().isAMDGPU()) {
8754 for (StringRef Feature : llvm::split(Arch.split(':').second, ':')) {
8755 FeatureArgs.emplace_back(
8756 Args.MakeArgString(Feature.take_back() + Feature.drop_back()));
8757 }
8758 }
8759
8760 // TODO: We need to pass in the full target-id and handle it properly in the
8761 // linker wrapper.
8762 SmallVector<std::string> Parts{
8763 "file=" + File.str(),
8764 "triple=" + TC->getTripleString(),
8765 "arch=" + Arch.str(),
8766 "kind=" + Kind.str(),
8767 };
8768
8769 if (TC->getDriver().isUsingLTO(/* IsOffload */ true) ||
8770 TC->getTriple().isAMDGPU())
8771 for (StringRef Feature : FeatureArgs)
8772 Parts.emplace_back("feature=" + Feature.str());
8773
8774 CmdArgs.push_back(Args.MakeArgString("--image=" + llvm::join(Parts, ",")));
8775 }
8776
8777 C.addCommand(std::make_unique<Command>(
8778 JA, *this, ResponseFileSupport::None(),
8779 Args.MakeArgString(getToolChain().GetProgramPath(getShortName())),
8780 CmdArgs, Inputs, Output));
8781 }
8782
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const8783 void LinkerWrapper::ConstructJob(Compilation &C, const JobAction &JA,
8784 const InputInfo &Output,
8785 const InputInfoList &Inputs,
8786 const ArgList &Args,
8787 const char *LinkingOutput) const {
8788 const Driver &D = getToolChain().getDriver();
8789 const llvm::Triple TheTriple = getToolChain().getTriple();
8790 ArgStringList CmdArgs;
8791
8792 // Pass the CUDA path to the linker wrapper tool.
8793 for (Action::OffloadKind Kind : {Action::OFK_Cuda, Action::OFK_OpenMP}) {
8794 auto TCRange = C.getOffloadToolChains(Kind);
8795 for (auto &I : llvm::make_range(TCRange.first, TCRange.second)) {
8796 const ToolChain *TC = I.second;
8797 if (TC->getTriple().isNVPTX()) {
8798 CudaInstallationDetector CudaInstallation(D, TheTriple, Args);
8799 if (CudaInstallation.isValid())
8800 CmdArgs.push_back(Args.MakeArgString(
8801 "--cuda-path=" + CudaInstallation.getInstallPath()));
8802 break;
8803 }
8804 }
8805 }
8806
8807 // Pass in the optimization level to use for LTO.
8808 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
8809 StringRef OOpt;
8810 if (A->getOption().matches(options::OPT_O4) ||
8811 A->getOption().matches(options::OPT_Ofast))
8812 OOpt = "3";
8813 else if (A->getOption().matches(options::OPT_O)) {
8814 OOpt = A->getValue();
8815 if (OOpt == "g")
8816 OOpt = "1";
8817 else if (OOpt == "s" || OOpt == "z")
8818 OOpt = "2";
8819 } else if (A->getOption().matches(options::OPT_O0))
8820 OOpt = "0";
8821 if (!OOpt.empty())
8822 CmdArgs.push_back(Args.MakeArgString(Twine("--opt-level=O") + OOpt));
8823 }
8824
8825 CmdArgs.push_back(
8826 Args.MakeArgString("--host-triple=" + TheTriple.getTriple()));
8827 if (Args.hasArg(options::OPT_v))
8828 CmdArgs.push_back("--wrapper-verbose");
8829
8830 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
8831 if (!A->getOption().matches(options::OPT_g0))
8832 CmdArgs.push_back("--device-debug");
8833 }
8834
8835 // code-object-version=X needs to be passed to clang-linker-wrapper to ensure
8836 // that it is used by lld.
8837 if (const Arg *A = Args.getLastArg(options::OPT_mcode_object_version_EQ)) {
8838 CmdArgs.push_back(Args.MakeArgString("-mllvm"));
8839 CmdArgs.push_back(Args.MakeArgString(
8840 Twine("--amdhsa-code-object-version=") + A->getValue()));
8841 }
8842
8843 for (const auto &A : Args.getAllArgValues(options::OPT_Xcuda_ptxas))
8844 CmdArgs.push_back(Args.MakeArgString("--ptxas-arg=" + A));
8845
8846 // Forward remarks passes to the LLVM backend in the wrapper.
8847 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_EQ))
8848 CmdArgs.push_back(Args.MakeArgString(Twine("--offload-opt=-pass-remarks=") +
8849 A->getValue()));
8850 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_missed_EQ))
8851 CmdArgs.push_back(Args.MakeArgString(
8852 Twine("--offload-opt=-pass-remarks-missed=") + A->getValue()));
8853 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_analysis_EQ))
8854 CmdArgs.push_back(Args.MakeArgString(
8855 Twine("--offload-opt=-pass-remarks-analysis=") + A->getValue()));
8856 if (Args.getLastArg(options::OPT_save_temps_EQ))
8857 CmdArgs.push_back("--save-temps");
8858
8859 // Construct the link job so we can wrap around it.
8860 Linker->ConstructJob(C, JA, Output, Inputs, Args, LinkingOutput);
8861 const auto &LinkCommand = C.getJobs().getJobs().back();
8862
8863 // Forward -Xoffload-linker<-triple> arguments to the device link job.
8864 for (Arg *A : Args.filtered(options::OPT_Xoffload_linker)) {
8865 StringRef Val = A->getValue(0);
8866 if (Val.empty())
8867 CmdArgs.push_back(
8868 Args.MakeArgString(Twine("--device-linker=") + A->getValue(1)));
8869 else
8870 CmdArgs.push_back(Args.MakeArgString(
8871 "--device-linker=" +
8872 ToolChain::getOpenMPTriple(Val.drop_front()).getTriple() + "=" +
8873 A->getValue(1)));
8874 }
8875 Args.ClaimAllArgs(options::OPT_Xoffload_linker);
8876
8877 // Embed bitcode instead of an object in JIT mode.
8878 if (Args.hasFlag(options::OPT_fopenmp_target_jit,
8879 options::OPT_fno_openmp_target_jit, false))
8880 CmdArgs.push_back("--embed-bitcode");
8881
8882 // Forward `-mllvm` arguments to the LLVM invocations if present.
8883 for (Arg *A : Args.filtered(options::OPT_mllvm)) {
8884 CmdArgs.push_back("-mllvm");
8885 CmdArgs.push_back(A->getValue());
8886 A->claim();
8887 }
8888
8889 // Add the linker arguments to be forwarded by the wrapper.
8890 CmdArgs.push_back(Args.MakeArgString(Twine("--linker-path=") +
8891 LinkCommand->getExecutable()));
8892 CmdArgs.push_back("--");
8893 for (const char *LinkArg : LinkCommand->getArguments())
8894 CmdArgs.push_back(LinkArg);
8895
8896 const char *Exec =
8897 Args.MakeArgString(getToolChain().GetProgramPath("clang-linker-wrapper"));
8898
8899 // Replace the executable and arguments of the link job with the
8900 // wrapper.
8901 LinkCommand->replaceExecutable(Exec);
8902 LinkCommand->replaceArguments(CmdArgs);
8903 }
8904