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/M68k.h"
14 #include "Arch/Mips.h"
15 #include "Arch/PPC.h"
16 #include "Arch/RISCV.h"
17 #include "Arch/Sparc.h"
18 #include "Arch/SystemZ.h"
19 #include "Arch/VE.h"
20 #include "Arch/X86.h"
21 #include "CommonArgs.h"
22 #include "Hexagon.h"
23 #include "InputInfo.h"
24 #include "MSP430.h"
25 #include "PS4CPU.h"
26 #include "clang/Basic/CharInfo.h"
27 #include "clang/Basic/CodeGenOptions.h"
28 #include "clang/Basic/LangOptions.h"
29 #include "clang/Basic/ObjCRuntime.h"
30 #include "clang/Basic/Version.h"
31 #include "clang/Driver/Distro.h"
32 #include "clang/Driver/DriverDiagnostic.h"
33 #include "clang/Driver/Options.h"
34 #include "clang/Driver/SanitizerArgs.h"
35 #include "clang/Driver/XRayArgs.h"
36 #include "llvm/ADT/StringExtras.h"
37 #include "llvm/Config/llvm-config.h"
38 #include "llvm/Option/ArgList.h"
39 #include "llvm/Support/CodeGen.h"
40 #include "llvm/Support/Compiler.h"
41 #include "llvm/Support/Compression.h"
42 #include "llvm/Support/FileSystem.h"
43 #include "llvm/Support/Host.h"
44 #include "llvm/Support/Path.h"
45 #include "llvm/Support/Process.h"
46 #include "llvm/Support/TargetParser.h"
47 #include "llvm/Support/YAMLParser.h"
48
49 using namespace clang::driver;
50 using namespace clang::driver::tools;
51 using namespace clang;
52 using namespace llvm::opt;
53
CheckPreprocessingOptions(const Driver & D,const ArgList & Args)54 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
55 if (Arg *A =
56 Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
57 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
58 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
59 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
60 << A->getBaseArg().getAsString(Args)
61 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
62 }
63 }
64 }
65
CheckCodeGenerationOptions(const Driver & D,const ArgList & Args)66 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
67 // In gcc, only ARM checks this, but it seems reasonable to check universally.
68 if (Args.hasArg(options::OPT_static))
69 if (const Arg *A =
70 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
71 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
72 << "-static";
73 }
74
75 // Add backslashes to escape spaces and other backslashes.
76 // This is used for the space-separated argument list specified with
77 // the -dwarf-debug-flags option.
EscapeSpacesAndBackslashes(const char * Arg,SmallVectorImpl<char> & Res)78 static void EscapeSpacesAndBackslashes(const char *Arg,
79 SmallVectorImpl<char> &Res) {
80 for (; *Arg; ++Arg) {
81 switch (*Arg) {
82 default:
83 break;
84 case ' ':
85 case '\\':
86 Res.push_back('\\');
87 break;
88 }
89 Res.push_back(*Arg);
90 }
91 }
92
93 // Quote target names for inclusion in GNU Make dependency files.
94 // Only the characters '$', '#', ' ', '\t' are quoted.
QuoteTarget(StringRef Target,SmallVectorImpl<char> & Res)95 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
96 for (unsigned i = 0, e = Target.size(); i != e; ++i) {
97 switch (Target[i]) {
98 case ' ':
99 case '\t':
100 // Escape the preceding backslashes
101 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
102 Res.push_back('\\');
103
104 // Escape the space/tab
105 Res.push_back('\\');
106 break;
107 case '$':
108 Res.push_back('$');
109 break;
110 case '#':
111 Res.push_back('\\');
112 break;
113 default:
114 break;
115 }
116
117 Res.push_back(Target[i]);
118 }
119 }
120
121 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
122 /// offloading tool chain that is associated with the current action \a JA.
123 static void
forAllAssociatedToolChains(Compilation & C,const JobAction & JA,const ToolChain & RegularToolChain,llvm::function_ref<void (const ToolChain &)> Work)124 forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
125 const ToolChain &RegularToolChain,
126 llvm::function_ref<void(const ToolChain &)> Work) {
127 // Apply Work on the current/regular tool chain.
128 Work(RegularToolChain);
129
130 // Apply Work on all the offloading tool chains associated with the current
131 // action.
132 if (JA.isHostOffloading(Action::OFK_Cuda))
133 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
134 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
135 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
136 else if (JA.isHostOffloading(Action::OFK_HIP))
137 Work(*C.getSingleOffloadToolChain<Action::OFK_HIP>());
138 else if (JA.isDeviceOffloading(Action::OFK_HIP))
139 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
140
141 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
142 auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
143 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
144 Work(*II->second);
145 } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
146 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
147
148 //
149 // TODO: Add support for other offloading programming models here.
150 //
151 }
152
153 /// This is a helper function for validating the optional refinement step
154 /// parameter in reciprocal argument strings. Return false if there is an error
155 /// parsing the refinement step. Otherwise, return true and set the Position
156 /// of the refinement step in the input string.
getRefinementStep(StringRef In,const Driver & D,const Arg & A,size_t & Position)157 static bool getRefinementStep(StringRef In, const Driver &D,
158 const Arg &A, size_t &Position) {
159 const char RefinementStepToken = ':';
160 Position = In.find(RefinementStepToken);
161 if (Position != StringRef::npos) {
162 StringRef Option = A.getOption().getName();
163 StringRef RefStep = In.substr(Position + 1);
164 // Allow exactly one numeric character for the additional refinement
165 // step parameter. This is reasonable for all currently-supported
166 // operations and architectures because we would expect that a larger value
167 // of refinement steps would cause the estimate "optimization" to
168 // under-perform the native operation. Also, if the estimate does not
169 // converge quickly, it probably will not ever converge, so further
170 // refinement steps will not produce a better answer.
171 if (RefStep.size() != 1) {
172 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
173 return false;
174 }
175 char RefStepChar = RefStep[0];
176 if (RefStepChar < '0' || RefStepChar > '9') {
177 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
178 return false;
179 }
180 }
181 return true;
182 }
183
184 /// The -mrecip flag requires processing of many optional parameters.
ParseMRecip(const Driver & D,const ArgList & Args,ArgStringList & OutStrings)185 static void ParseMRecip(const Driver &D, const ArgList &Args,
186 ArgStringList &OutStrings) {
187 StringRef DisabledPrefixIn = "!";
188 StringRef DisabledPrefixOut = "!";
189 StringRef EnabledPrefixOut = "";
190 StringRef Out = "-mrecip=";
191
192 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
193 if (!A)
194 return;
195
196 unsigned NumOptions = A->getNumValues();
197 if (NumOptions == 0) {
198 // No option is the same as "all".
199 OutStrings.push_back(Args.MakeArgString(Out + "all"));
200 return;
201 }
202
203 // Pass through "all", "none", or "default" with an optional refinement step.
204 if (NumOptions == 1) {
205 StringRef Val = A->getValue(0);
206 size_t RefStepLoc;
207 if (!getRefinementStep(Val, D, *A, RefStepLoc))
208 return;
209 StringRef ValBase = Val.slice(0, RefStepLoc);
210 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
211 OutStrings.push_back(Args.MakeArgString(Out + Val));
212 return;
213 }
214 }
215
216 // Each reciprocal type may be enabled or disabled individually.
217 // Check each input value for validity, concatenate them all back together,
218 // and pass through.
219
220 llvm::StringMap<bool> OptionStrings;
221 OptionStrings.insert(std::make_pair("divd", false));
222 OptionStrings.insert(std::make_pair("divf", false));
223 OptionStrings.insert(std::make_pair("vec-divd", false));
224 OptionStrings.insert(std::make_pair("vec-divf", false));
225 OptionStrings.insert(std::make_pair("sqrtd", false));
226 OptionStrings.insert(std::make_pair("sqrtf", false));
227 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
228 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
229
230 for (unsigned i = 0; i != NumOptions; ++i) {
231 StringRef Val = A->getValue(i);
232
233 bool IsDisabled = Val.startswith(DisabledPrefixIn);
234 // Ignore the disablement token for string matching.
235 if (IsDisabled)
236 Val = Val.substr(1);
237
238 size_t RefStep;
239 if (!getRefinementStep(Val, D, *A, RefStep))
240 return;
241
242 StringRef ValBase = Val.slice(0, RefStep);
243 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
244 if (OptionIter == OptionStrings.end()) {
245 // Try again specifying float suffix.
246 OptionIter = OptionStrings.find(ValBase.str() + 'f');
247 if (OptionIter == OptionStrings.end()) {
248 // The input name did not match any known option string.
249 D.Diag(diag::err_drv_unknown_argument) << Val;
250 return;
251 }
252 // The option was specified without a float or double suffix.
253 // Make sure that the double entry was not already specified.
254 // The float entry will be checked below.
255 if (OptionStrings[ValBase.str() + 'd']) {
256 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
257 return;
258 }
259 }
260
261 if (OptionIter->second == true) {
262 // Duplicate option specified.
263 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
264 return;
265 }
266
267 // Mark the matched option as found. Do not allow duplicate specifiers.
268 OptionIter->second = true;
269
270 // If the precision was not specified, also mark the double entry as found.
271 if (ValBase.back() != 'f' && ValBase.back() != 'd')
272 OptionStrings[ValBase.str() + 'd'] = true;
273
274 // Build the output string.
275 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
276 Out = Args.MakeArgString(Out + Prefix + Val);
277 if (i != NumOptions - 1)
278 Out = Args.MakeArgString(Out + ",");
279 }
280
281 OutStrings.push_back(Args.MakeArgString(Out));
282 }
283
284 /// The -mprefer-vector-width option accepts either a positive integer
285 /// or the string "none".
ParseMPreferVectorWidth(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)286 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
287 ArgStringList &CmdArgs) {
288 Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
289 if (!A)
290 return;
291
292 StringRef Value = A->getValue();
293 if (Value == "none") {
294 CmdArgs.push_back("-mprefer-vector-width=none");
295 } else {
296 unsigned Width;
297 if (Value.getAsInteger(10, Width)) {
298 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
299 return;
300 }
301 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
302 }
303 }
304
getWebAssemblyTargetFeatures(const ArgList & Args,std::vector<StringRef> & Features)305 static void getWebAssemblyTargetFeatures(const ArgList &Args,
306 std::vector<StringRef> &Features) {
307 handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
308 }
309
getTargetFeatures(const Driver & D,const llvm::Triple & Triple,const ArgList & Args,ArgStringList & CmdArgs,bool ForAS,bool IsAux=false)310 static void getTargetFeatures(const Driver &D, const llvm::Triple &Triple,
311 const ArgList &Args, ArgStringList &CmdArgs,
312 bool ForAS, bool IsAux = false) {
313 std::vector<StringRef> Features;
314 switch (Triple.getArch()) {
315 default:
316 break;
317 case llvm::Triple::mips:
318 case llvm::Triple::mipsel:
319 case llvm::Triple::mips64:
320 case llvm::Triple::mips64el:
321 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
322 break;
323
324 case llvm::Triple::arm:
325 case llvm::Triple::armeb:
326 case llvm::Triple::thumb:
327 case llvm::Triple::thumbeb:
328 arm::getARMTargetFeatures(D, Triple, Args, CmdArgs, Features, ForAS);
329 break;
330
331 case llvm::Triple::ppc:
332 case llvm::Triple::ppcle:
333 case llvm::Triple::ppc64:
334 case llvm::Triple::ppc64le:
335 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
336 break;
337 case llvm::Triple::riscv32:
338 case llvm::Triple::riscv64:
339 riscv::getRISCVTargetFeatures(D, Triple, Args, Features);
340 break;
341 case llvm::Triple::systemz:
342 systemz::getSystemZTargetFeatures(D, Args, Features);
343 break;
344 case llvm::Triple::aarch64:
345 case llvm::Triple::aarch64_32:
346 case llvm::Triple::aarch64_be:
347 aarch64::getAArch64TargetFeatures(D, Triple, Args, Features);
348 break;
349 case llvm::Triple::x86:
350 case llvm::Triple::x86_64:
351 x86::getX86TargetFeatures(D, Triple, Args, Features);
352 break;
353 case llvm::Triple::hexagon:
354 hexagon::getHexagonTargetFeatures(D, Args, Features);
355 break;
356 case llvm::Triple::wasm32:
357 case llvm::Triple::wasm64:
358 getWebAssemblyTargetFeatures(Args, Features);
359 break;
360 case llvm::Triple::sparc:
361 case llvm::Triple::sparcel:
362 case llvm::Triple::sparcv9:
363 sparc::getSparcTargetFeatures(D, Args, Features);
364 break;
365 case llvm::Triple::r600:
366 case llvm::Triple::amdgcn:
367 amdgpu::getAMDGPUTargetFeatures(D, Triple, Args, Features);
368 break;
369 case llvm::Triple::m68k:
370 m68k::getM68kTargetFeatures(D, Triple, Args, Features);
371 break;
372 case llvm::Triple::msp430:
373 msp430::getMSP430TargetFeatures(D, Args, Features);
374 break;
375 case llvm::Triple::ve:
376 ve::getVETargetFeatures(D, Args, Features);
377 break;
378 }
379
380 for (auto Feature : unifyTargetFeatures(Features)) {
381 CmdArgs.push_back(IsAux ? "-aux-target-feature" : "-target-feature");
382 CmdArgs.push_back(Feature.data());
383 }
384 }
385
386 static bool
shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime & runtime,const llvm::Triple & Triple)387 shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
388 const llvm::Triple &Triple) {
389 // We use the zero-cost exception tables for Objective-C if the non-fragile
390 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
391 // later.
392 if (runtime.isNonFragile())
393 return true;
394
395 if (!Triple.isMacOSX())
396 return false;
397
398 return (!Triple.isMacOSXVersionLT(10, 5) &&
399 (Triple.getArch() == llvm::Triple::x86_64 ||
400 Triple.getArch() == llvm::Triple::arm));
401 }
402
403 /// Adds exception related arguments to the driver command arguments. There's a
404 /// master flag, -fexceptions and also language specific flags to enable/disable
405 /// C++ and Objective-C exceptions. This makes it possible to for example
406 /// 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)407 static bool addExceptionArgs(const ArgList &Args, types::ID InputType,
408 const ToolChain &TC, bool KernelOrKext,
409 const ObjCRuntime &objcRuntime,
410 ArgStringList &CmdArgs) {
411 const llvm::Triple &Triple = TC.getTriple();
412
413 if (KernelOrKext) {
414 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
415 // arguments now to avoid warnings about unused arguments.
416 Args.ClaimAllArgs(options::OPT_fexceptions);
417 Args.ClaimAllArgs(options::OPT_fno_exceptions);
418 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
419 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
420 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
421 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
422 Args.ClaimAllArgs(options::OPT_fasync_exceptions);
423 Args.ClaimAllArgs(options::OPT_fno_async_exceptions);
424 return false;
425 }
426
427 // See if the user explicitly enabled exceptions.
428 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
429 false);
430
431 bool EHa = Args.hasFlag(options::OPT_fasync_exceptions,
432 options::OPT_fno_async_exceptions, false);
433 if (EHa) {
434 CmdArgs.push_back("-fasync-exceptions");
435 EH = true;
436 }
437
438 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
439 // is not necessarily sensible, but follows GCC.
440 if (types::isObjC(InputType) &&
441 Args.hasFlag(options::OPT_fobjc_exceptions,
442 options::OPT_fno_objc_exceptions, true)) {
443 CmdArgs.push_back("-fobjc-exceptions");
444
445 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
446 }
447
448 if (types::isCXX(InputType)) {
449 // Disable C++ EH by default on XCore and PS4.
450 bool CXXExceptionsEnabled =
451 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
452 Arg *ExceptionArg = Args.getLastArg(
453 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
454 options::OPT_fexceptions, options::OPT_fno_exceptions);
455 if (ExceptionArg)
456 CXXExceptionsEnabled =
457 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
458 ExceptionArg->getOption().matches(options::OPT_fexceptions);
459
460 if (CXXExceptionsEnabled) {
461 CmdArgs.push_back("-fcxx-exceptions");
462
463 EH = true;
464 }
465 }
466
467 // OPT_fignore_exceptions means exception could still be thrown,
468 // but no clean up or catch would happen in current module.
469 // So we do not set EH to false.
470 Args.AddLastArg(CmdArgs, options::OPT_fignore_exceptions);
471
472 if (EH)
473 CmdArgs.push_back("-fexceptions");
474 return EH;
475 }
476
ShouldEnableAutolink(const ArgList & Args,const ToolChain & TC,const JobAction & JA)477 static bool ShouldEnableAutolink(const ArgList &Args, const ToolChain &TC,
478 const JobAction &JA) {
479 bool Default = true;
480 if (TC.getTriple().isOSDarwin()) {
481 // The native darwin assembler doesn't support the linker_option directives,
482 // so we disable them if we think the .s file will be passed to it.
483 Default = TC.useIntegratedAs();
484 }
485 // The linker_option directives are intended for host compilation.
486 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
487 JA.isDeviceOffloading(Action::OFK_HIP))
488 Default = false;
489 return Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
490 Default);
491 }
492
ShouldDisableDwarfDirectory(const ArgList & Args,const ToolChain & TC)493 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
494 const ToolChain &TC) {
495 bool UseDwarfDirectory =
496 Args.hasFlag(options::OPT_fdwarf_directory_asm,
497 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
498 return !UseDwarfDirectory;
499 }
500
501 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
502 // to the corresponding DebugInfoKind.
DebugLevelToInfoKind(const Arg & A)503 static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
504 assert(A.getOption().matches(options::OPT_gN_Group) &&
505 "Not a -g option that specifies a debug-info level");
506 if (A.getOption().matches(options::OPT_g0) ||
507 A.getOption().matches(options::OPT_ggdb0))
508 return codegenoptions::NoDebugInfo;
509 if (A.getOption().matches(options::OPT_gline_tables_only) ||
510 A.getOption().matches(options::OPT_ggdb1))
511 return codegenoptions::DebugLineTablesOnly;
512 if (A.getOption().matches(options::OPT_gline_directives_only))
513 return codegenoptions::DebugDirectivesOnly;
514 return codegenoptions::LimitedDebugInfo;
515 }
516
mustUseNonLeafFramePointerForTarget(const llvm::Triple & Triple)517 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
518 switch (Triple.getArch()){
519 default:
520 return false;
521 case llvm::Triple::arm:
522 case llvm::Triple::thumb:
523 // ARM Darwin targets require a frame pointer to be always present to aid
524 // offline debugging via backtraces.
525 return Triple.isOSDarwin();
526 }
527 }
528
useFramePointerForTargetByDefault(const ArgList & Args,const llvm::Triple & Triple)529 static bool useFramePointerForTargetByDefault(const ArgList &Args,
530 const llvm::Triple &Triple) {
531 if (Args.hasArg(options::OPT_pg) && !Args.hasArg(options::OPT_mfentry))
532 return true;
533
534 switch (Triple.getArch()) {
535 case llvm::Triple::xcore:
536 case llvm::Triple::wasm32:
537 case llvm::Triple::wasm64:
538 case llvm::Triple::msp430:
539 // XCore never wants frame pointers, regardless of OS.
540 // WebAssembly never wants frame pointers.
541 return false;
542 case llvm::Triple::ppc:
543 case llvm::Triple::ppcle:
544 case llvm::Triple::ppc64:
545 case llvm::Triple::ppc64le:
546 case llvm::Triple::riscv32:
547 case llvm::Triple::riscv64:
548 case llvm::Triple::amdgcn:
549 case llvm::Triple::r600:
550 return !areOptimizationsEnabled(Args);
551 default:
552 break;
553 }
554
555 if (Triple.isOSNetBSD()) {
556 return !areOptimizationsEnabled(Args);
557 }
558
559 if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
560 Triple.isOSHurd()) {
561 switch (Triple.getArch()) {
562 // Don't use a frame pointer on linux if optimizing for certain targets.
563 case llvm::Triple::arm:
564 case llvm::Triple::armeb:
565 case llvm::Triple::thumb:
566 case llvm::Triple::thumbeb:
567 if (Triple.isAndroid())
568 return true;
569 LLVM_FALLTHROUGH;
570 case llvm::Triple::mips64:
571 case llvm::Triple::mips64el:
572 case llvm::Triple::mips:
573 case llvm::Triple::mipsel:
574 case llvm::Triple::systemz:
575 case llvm::Triple::x86:
576 case llvm::Triple::x86_64:
577 return !areOptimizationsEnabled(Args);
578 default:
579 return true;
580 }
581 }
582
583 if (Triple.isOSWindows()) {
584 switch (Triple.getArch()) {
585 case llvm::Triple::x86:
586 return !areOptimizationsEnabled(Args);
587 case llvm::Triple::x86_64:
588 return Triple.isOSBinFormatMachO();
589 case llvm::Triple::arm:
590 case llvm::Triple::thumb:
591 // Windows on ARM builds with FPO disabled to aid fast stack walking
592 return true;
593 default:
594 // All other supported Windows ISAs use xdata unwind information, so frame
595 // pointers are not generally useful.
596 return false;
597 }
598 }
599
600 return true;
601 }
602
603 static CodeGenOptions::FramePointerKind
getFramePointerKind(const ArgList & Args,const llvm::Triple & Triple)604 getFramePointerKind(const ArgList &Args, const llvm::Triple &Triple) {
605 // We have 4 states:
606 //
607 // 00) leaf retained, non-leaf retained
608 // 01) leaf retained, non-leaf omitted (this is invalid)
609 // 10) leaf omitted, non-leaf retained
610 // (what -momit-leaf-frame-pointer was designed for)
611 // 11) leaf omitted, non-leaf omitted
612 //
613 // "omit" options taking precedence over "no-omit" options is the only way
614 // to make 3 valid states representable
615 Arg *A = Args.getLastArg(options::OPT_fomit_frame_pointer,
616 options::OPT_fno_omit_frame_pointer);
617 bool OmitFP = A && A->getOption().matches(options::OPT_fomit_frame_pointer);
618 bool NoOmitFP =
619 A && A->getOption().matches(options::OPT_fno_omit_frame_pointer);
620 bool OmitLeafFP = Args.hasFlag(options::OPT_momit_leaf_frame_pointer,
621 options::OPT_mno_omit_leaf_frame_pointer,
622 Triple.isAArch64() || Triple.isPS4CPU());
623 if (NoOmitFP || mustUseNonLeafFramePointerForTarget(Triple) ||
624 (!OmitFP && useFramePointerForTargetByDefault(Args, Triple))) {
625 if (OmitLeafFP)
626 return CodeGenOptions::FramePointerKind::NonLeaf;
627 return CodeGenOptions::FramePointerKind::All;
628 }
629 return CodeGenOptions::FramePointerKind::None;
630 }
631
632 /// Add a CC1 option to specify the debug compilation directory.
addDebugCompDirArg(const ArgList & Args,ArgStringList & CmdArgs,const llvm::vfs::FileSystem & VFS)633 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs,
634 const llvm::vfs::FileSystem &VFS) {
635 if (Arg *A = Args.getLastArg(options::OPT_ffile_compilation_dir_EQ,
636 options::OPT_fdebug_compilation_dir_EQ)) {
637 if (A->getOption().matches(options::OPT_ffile_compilation_dir_EQ))
638 CmdArgs.push_back(Args.MakeArgString(Twine("-fdebug-compilation-dir=") +
639 A->getValue()));
640 else
641 A->render(Args, CmdArgs);
642 } else if (llvm::ErrorOr<std::string> CWD =
643 VFS.getCurrentWorkingDirectory()) {
644 CmdArgs.push_back(Args.MakeArgString("-fdebug-compilation-dir=" + *CWD));
645 }
646 }
647
648 /// Add a CC1 and CC1AS option to specify the debug file path prefix map.
addDebugPrefixMapArg(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)649 static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
650 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
651 options::OPT_fdebug_prefix_map_EQ)) {
652 StringRef Map = A->getValue();
653 if (Map.find('=') == StringRef::npos)
654 D.Diag(diag::err_drv_invalid_argument_to_option)
655 << Map << A->getOption().getName();
656 else
657 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
658 A->claim();
659 }
660 }
661
662 /// Add a CC1 and CC1AS option to specify the macro file path prefix map.
addMacroPrefixMapArg(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)663 static void addMacroPrefixMapArg(const Driver &D, const ArgList &Args,
664 ArgStringList &CmdArgs) {
665 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
666 options::OPT_fmacro_prefix_map_EQ)) {
667 StringRef Map = A->getValue();
668 if (Map.find('=') == StringRef::npos)
669 D.Diag(diag::err_drv_invalid_argument_to_option)
670 << Map << A->getOption().getName();
671 else
672 CmdArgs.push_back(Args.MakeArgString("-fmacro-prefix-map=" + Map));
673 A->claim();
674 }
675 }
676
677 /// Add a CC1 and CC1AS option to specify the coverage file path prefix map.
addCoveragePrefixMapArg(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)678 static void addCoveragePrefixMapArg(const Driver &D, const ArgList &Args,
679 ArgStringList &CmdArgs) {
680 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
681 options::OPT_fcoverage_prefix_map_EQ)) {
682 StringRef Map = A->getValue();
683 if (Map.find('=') == StringRef::npos)
684 D.Diag(diag::err_drv_invalid_argument_to_option)
685 << Map << A->getOption().getName();
686 else
687 CmdArgs.push_back(Args.MakeArgString("-fcoverage-prefix-map=" + Map));
688 A->claim();
689 }
690 }
691
692 /// Vectorize at all optimization levels greater than 1 except for -Oz.
693 /// For -Oz the loop vectorizer is disabled, while the slp vectorizer is
694 /// enabled.
shouldEnableVectorizerAtOLevel(const ArgList & Args,bool isSlpVec)695 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
696 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
697 if (A->getOption().matches(options::OPT_O4) ||
698 A->getOption().matches(options::OPT_Ofast))
699 return true;
700
701 if (A->getOption().matches(options::OPT_O0))
702 return false;
703
704 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
705
706 // Vectorize -Os.
707 StringRef S(A->getValue());
708 if (S == "s")
709 return true;
710
711 // Don't vectorize -Oz, unless it's the slp vectorizer.
712 if (S == "z")
713 return isSlpVec;
714
715 unsigned OptLevel = 0;
716 if (S.getAsInteger(10, OptLevel))
717 return false;
718
719 return OptLevel > 1;
720 }
721
722 return false;
723 }
724
725 /// Add -x lang to \p CmdArgs for \p Input.
addDashXForInput(const ArgList & Args,const InputInfo & Input,ArgStringList & CmdArgs)726 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
727 ArgStringList &CmdArgs) {
728 // When using -verify-pch, we don't want to provide the type
729 // 'precompiled-header' if it was inferred from the file extension
730 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
731 return;
732
733 CmdArgs.push_back("-x");
734 if (Args.hasArg(options::OPT_rewrite_objc))
735 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
736 else {
737 // Map the driver type to the frontend type. This is mostly an identity
738 // mapping, except that the distinction between module interface units
739 // and other source files does not exist at the frontend layer.
740 const char *ClangType;
741 switch (Input.getType()) {
742 case types::TY_CXXModule:
743 ClangType = "c++";
744 break;
745 case types::TY_PP_CXXModule:
746 ClangType = "c++-cpp-output";
747 break;
748 default:
749 ClangType = types::getTypeName(Input.getType());
750 break;
751 }
752 CmdArgs.push_back(ClangType);
753 }
754 }
755
addPGOAndCoverageFlags(const ToolChain & TC,Compilation & C,const Driver & D,const InputInfo & Output,const ArgList & Args,ArgStringList & CmdArgs)756 static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C,
757 const Driver &D, const InputInfo &Output,
758 const ArgList &Args,
759 ArgStringList &CmdArgs) {
760
761 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
762 options::OPT_fprofile_generate_EQ,
763 options::OPT_fno_profile_generate);
764 if (PGOGenerateArg &&
765 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
766 PGOGenerateArg = nullptr;
767
768 auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
769 options::OPT_fcs_profile_generate_EQ,
770 options::OPT_fno_profile_generate);
771 if (CSPGOGenerateArg &&
772 CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
773 CSPGOGenerateArg = nullptr;
774
775 auto *ProfileGenerateArg = Args.getLastArg(
776 options::OPT_fprofile_instr_generate,
777 options::OPT_fprofile_instr_generate_EQ,
778 options::OPT_fno_profile_instr_generate);
779 if (ProfileGenerateArg &&
780 ProfileGenerateArg->getOption().matches(
781 options::OPT_fno_profile_instr_generate))
782 ProfileGenerateArg = nullptr;
783
784 if (PGOGenerateArg && ProfileGenerateArg)
785 D.Diag(diag::err_drv_argument_not_allowed_with)
786 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
787
788 auto *ProfileUseArg = getLastProfileUseArg(Args);
789
790 if (PGOGenerateArg && ProfileUseArg)
791 D.Diag(diag::err_drv_argument_not_allowed_with)
792 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
793
794 if (ProfileGenerateArg && ProfileUseArg)
795 D.Diag(diag::err_drv_argument_not_allowed_with)
796 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
797
798 if (CSPGOGenerateArg && PGOGenerateArg) {
799 D.Diag(diag::err_drv_argument_not_allowed_with)
800 << CSPGOGenerateArg->getSpelling() << PGOGenerateArg->getSpelling();
801 PGOGenerateArg = nullptr;
802 }
803
804 if (ProfileGenerateArg) {
805 if (ProfileGenerateArg->getOption().matches(
806 options::OPT_fprofile_instr_generate_EQ))
807 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
808 ProfileGenerateArg->getValue()));
809 // The default is to use Clang Instrumentation.
810 CmdArgs.push_back("-fprofile-instrument=clang");
811 if (TC.getTriple().isWindowsMSVCEnvironment()) {
812 // Add dependent lib for clang_rt.profile
813 CmdArgs.push_back(Args.MakeArgString(
814 "--dependent-lib=" + TC.getCompilerRTBasename(Args, "profile")));
815 }
816 }
817
818 Arg *PGOGenArg = nullptr;
819 if (PGOGenerateArg) {
820 assert(!CSPGOGenerateArg);
821 PGOGenArg = PGOGenerateArg;
822 CmdArgs.push_back("-fprofile-instrument=llvm");
823 }
824 if (CSPGOGenerateArg) {
825 assert(!PGOGenerateArg);
826 PGOGenArg = CSPGOGenerateArg;
827 CmdArgs.push_back("-fprofile-instrument=csllvm");
828 }
829 if (PGOGenArg) {
830 if (TC.getTriple().isWindowsMSVCEnvironment()) {
831 // Add dependent lib for clang_rt.profile
832 CmdArgs.push_back(Args.MakeArgString(
833 "--dependent-lib=" + TC.getCompilerRTBasename(Args, "profile")));
834 }
835 if (PGOGenArg->getOption().matches(
836 PGOGenerateArg ? options::OPT_fprofile_generate_EQ
837 : options::OPT_fcs_profile_generate_EQ)) {
838 SmallString<128> Path(PGOGenArg->getValue());
839 llvm::sys::path::append(Path, "default_%m.profraw");
840 CmdArgs.push_back(
841 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
842 }
843 }
844
845 if (ProfileUseArg) {
846 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
847 CmdArgs.push_back(Args.MakeArgString(
848 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
849 else if ((ProfileUseArg->getOption().matches(
850 options::OPT_fprofile_use_EQ) ||
851 ProfileUseArg->getOption().matches(
852 options::OPT_fprofile_instr_use))) {
853 SmallString<128> Path(
854 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
855 if (Path.empty() || llvm::sys::fs::is_directory(Path))
856 llvm::sys::path::append(Path, "default.profdata");
857 CmdArgs.push_back(
858 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
859 }
860 }
861
862 bool EmitCovNotes = Args.hasFlag(options::OPT_ftest_coverage,
863 options::OPT_fno_test_coverage, false) ||
864 Args.hasArg(options::OPT_coverage);
865 bool EmitCovData = TC.needsGCovInstrumentation(Args);
866 if (EmitCovNotes)
867 CmdArgs.push_back("-ftest-coverage");
868 if (EmitCovData)
869 CmdArgs.push_back("-fprofile-arcs");
870
871 if (Args.hasFlag(options::OPT_fcoverage_mapping,
872 options::OPT_fno_coverage_mapping, false)) {
873 if (!ProfileGenerateArg)
874 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
875 << "-fcoverage-mapping"
876 << "-fprofile-instr-generate";
877
878 CmdArgs.push_back("-fcoverage-mapping");
879 }
880
881 if (Arg *A = Args.getLastArg(options::OPT_ffile_compilation_dir_EQ,
882 options::OPT_fcoverage_compilation_dir_EQ)) {
883 if (A->getOption().matches(options::OPT_ffile_compilation_dir_EQ))
884 CmdArgs.push_back(Args.MakeArgString(
885 Twine("-fcoverage-compilation-dir=") + A->getValue()));
886 else
887 A->render(Args, CmdArgs);
888 } else if (llvm::ErrorOr<std::string> CWD =
889 D.getVFS().getCurrentWorkingDirectory()) {
890 CmdArgs.push_back(Args.MakeArgString("-fcoverage-compilation-dir=" + *CWD));
891 }
892
893 if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {
894 auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
895 if (!Args.hasArg(options::OPT_coverage))
896 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
897 << "-fprofile-exclude-files="
898 << "--coverage";
899
900 StringRef v = Arg->getValue();
901 CmdArgs.push_back(
902 Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));
903 }
904
905 if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {
906 auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
907 if (!Args.hasArg(options::OPT_coverage))
908 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
909 << "-fprofile-filter-files="
910 << "--coverage";
911
912 StringRef v = Arg->getValue();
913 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));
914 }
915
916 if (const auto *A = Args.getLastArg(options::OPT_fprofile_update_EQ)) {
917 StringRef Val = A->getValue();
918 if (Val == "atomic" || Val == "prefer-atomic")
919 CmdArgs.push_back("-fprofile-update=atomic");
920 else if (Val != "single")
921 D.Diag(diag::err_drv_unsupported_option_argument)
922 << A->getOption().getName() << Val;
923 } else if (TC.getSanitizerArgs().needsTsanRt()) {
924 CmdArgs.push_back("-fprofile-update=atomic");
925 }
926
927 // Leave -fprofile-dir= an unused argument unless .gcda emission is
928 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
929 // the flag used. There is no -fno-profile-dir, so the user has no
930 // targeted way to suppress the warning.
931 Arg *FProfileDir = nullptr;
932 if (Args.hasArg(options::OPT_fprofile_arcs) ||
933 Args.hasArg(options::OPT_coverage))
934 FProfileDir = Args.getLastArg(options::OPT_fprofile_dir);
935
936 // Put the .gcno and .gcda files (if needed) next to the object file or
937 // bitcode file in the case of LTO.
938 // FIXME: There should be a simpler way to find the object file for this
939 // input, and this code probably does the wrong thing for commands that
940 // compile and link all at once.
941 if ((Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) &&
942 (EmitCovNotes || EmitCovData) && Output.isFilename()) {
943 SmallString<128> OutputFilename;
944 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT__SLASH_Fo))
945 OutputFilename = FinalOutput->getValue();
946 else if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
947 OutputFilename = FinalOutput->getValue();
948 else
949 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
950 SmallString<128> CoverageFilename = OutputFilename;
951 if (llvm::sys::path::is_relative(CoverageFilename))
952 (void)D.getVFS().makeAbsolute(CoverageFilename);
953 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
954
955 CmdArgs.push_back("-coverage-notes-file");
956 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
957
958 if (EmitCovData) {
959 if (FProfileDir) {
960 CoverageFilename = FProfileDir->getValue();
961 llvm::sys::path::append(CoverageFilename, OutputFilename);
962 }
963 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
964 CmdArgs.push_back("-coverage-data-file");
965 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
966 }
967 }
968 }
969
970 /// Check whether the given input tree contains any compilation actions.
ContainsCompileAction(const Action * A)971 static bool ContainsCompileAction(const Action *A) {
972 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
973 return true;
974
975 for (const auto &AI : A->inputs())
976 if (ContainsCompileAction(AI))
977 return true;
978
979 return false;
980 }
981
982 /// Check if -relax-all should be passed to the internal assembler.
983 /// This is done by default when compiling non-assembler source with -O0.
UseRelaxAll(Compilation & C,const ArgList & Args)984 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
985 bool RelaxDefault = true;
986
987 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
988 RelaxDefault = A->getOption().matches(options::OPT_O0);
989
990 if (RelaxDefault) {
991 RelaxDefault = false;
992 for (const auto &Act : C.getActions()) {
993 if (ContainsCompileAction(Act)) {
994 RelaxDefault = true;
995 break;
996 }
997 }
998 }
999
1000 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
1001 RelaxDefault);
1002 }
1003
1004 // Extract the integer N from a string spelled "-dwarf-N", returning 0
1005 // on mismatch. The StringRef input (rather than an Arg) allows
1006 // for use by the "-Xassembler" option parser.
DwarfVersionNum(StringRef ArgValue)1007 static unsigned DwarfVersionNum(StringRef ArgValue) {
1008 return llvm::StringSwitch<unsigned>(ArgValue)
1009 .Case("-gdwarf-2", 2)
1010 .Case("-gdwarf-3", 3)
1011 .Case("-gdwarf-4", 4)
1012 .Case("-gdwarf-5", 5)
1013 .Default(0);
1014 }
1015
1016 // Find a DWARF format version option.
1017 // This function is a complementary for DwarfVersionNum().
getDwarfNArg(const ArgList & Args)1018 static const Arg *getDwarfNArg(const ArgList &Args) {
1019 return Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
1020 options::OPT_gdwarf_4, options::OPT_gdwarf_5,
1021 options::OPT_gdwarf);
1022 }
1023
RenderDebugEnablingArgs(const ArgList & Args,ArgStringList & CmdArgs,codegenoptions::DebugInfoKind DebugInfoKind,unsigned DwarfVersion,llvm::DebuggerKind DebuggerTuning)1024 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
1025 codegenoptions::DebugInfoKind DebugInfoKind,
1026 unsigned DwarfVersion,
1027 llvm::DebuggerKind DebuggerTuning) {
1028 switch (DebugInfoKind) {
1029 case codegenoptions::DebugDirectivesOnly:
1030 CmdArgs.push_back("-debug-info-kind=line-directives-only");
1031 break;
1032 case codegenoptions::DebugLineTablesOnly:
1033 CmdArgs.push_back("-debug-info-kind=line-tables-only");
1034 break;
1035 case codegenoptions::DebugInfoConstructor:
1036 CmdArgs.push_back("-debug-info-kind=constructor");
1037 break;
1038 case codegenoptions::LimitedDebugInfo:
1039 CmdArgs.push_back("-debug-info-kind=limited");
1040 break;
1041 case codegenoptions::FullDebugInfo:
1042 CmdArgs.push_back("-debug-info-kind=standalone");
1043 break;
1044 case codegenoptions::UnusedTypeInfo:
1045 CmdArgs.push_back("-debug-info-kind=unused-types");
1046 break;
1047 default:
1048 break;
1049 }
1050 if (DwarfVersion > 0)
1051 CmdArgs.push_back(
1052 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
1053 switch (DebuggerTuning) {
1054 case llvm::DebuggerKind::GDB:
1055 CmdArgs.push_back("-debugger-tuning=gdb");
1056 break;
1057 case llvm::DebuggerKind::LLDB:
1058 CmdArgs.push_back("-debugger-tuning=lldb");
1059 break;
1060 case llvm::DebuggerKind::SCE:
1061 CmdArgs.push_back("-debugger-tuning=sce");
1062 break;
1063 case llvm::DebuggerKind::DBX:
1064 CmdArgs.push_back("-debugger-tuning=dbx");
1065 break;
1066 default:
1067 break;
1068 }
1069 }
1070
checkDebugInfoOption(const Arg * A,const ArgList & Args,const Driver & D,const ToolChain & TC)1071 static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
1072 const Driver &D, const ToolChain &TC) {
1073 assert(A && "Expected non-nullptr argument.");
1074 if (TC.supportsDebugInfoOption(A))
1075 return true;
1076 D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
1077 << A->getAsString(Args) << TC.getTripleString();
1078 return false;
1079 }
1080
RenderDebugInfoCompressionArgs(const ArgList & Args,ArgStringList & CmdArgs,const Driver & D,const ToolChain & TC)1081 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
1082 ArgStringList &CmdArgs,
1083 const Driver &D,
1084 const ToolChain &TC) {
1085 const Arg *A = Args.getLastArg(options::OPT_gz_EQ);
1086 if (!A)
1087 return;
1088 if (checkDebugInfoOption(A, Args, D, TC)) {
1089 StringRef Value = A->getValue();
1090 if (Value == "none") {
1091 CmdArgs.push_back("--compress-debug-sections=none");
1092 } else if (Value == "zlib" || Value == "zlib-gnu") {
1093 if (llvm::zlib::isAvailable()) {
1094 CmdArgs.push_back(
1095 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
1096 } else {
1097 D.Diag(diag::warn_debug_compression_unavailable);
1098 }
1099 } else {
1100 D.Diag(diag::err_drv_unsupported_option_argument)
1101 << A->getOption().getName() << Value;
1102 }
1103 }
1104 }
1105
RelocationModelName(llvm::Reloc::Model Model)1106 static const char *RelocationModelName(llvm::Reloc::Model Model) {
1107 switch (Model) {
1108 case llvm::Reloc::Static:
1109 return "static";
1110 case llvm::Reloc::PIC_:
1111 return "pic";
1112 case llvm::Reloc::DynamicNoPIC:
1113 return "dynamic-no-pic";
1114 case llvm::Reloc::ROPI:
1115 return "ropi";
1116 case llvm::Reloc::RWPI:
1117 return "rwpi";
1118 case llvm::Reloc::ROPI_RWPI:
1119 return "ropi-rwpi";
1120 }
1121 llvm_unreachable("Unknown Reloc::Model kind");
1122 }
handleAMDGPUCodeObjectVersionOptions(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)1123 static void handleAMDGPUCodeObjectVersionOptions(const Driver &D,
1124 const ArgList &Args,
1125 ArgStringList &CmdArgs) {
1126 // If no version was requested by the user, use the default value from the
1127 // back end. This is consistent with the value returned from
1128 // getAMDGPUCodeObjectVersion. This lets clang emit IR for amdgpu without
1129 // requiring the corresponding llvm to have the AMDGPU target enabled,
1130 // provided the user (e.g. front end tests) can use the default.
1131 if (haveAMDGPUCodeObjectVersionArgument(D, Args)) {
1132 unsigned CodeObjVer = getAMDGPUCodeObjectVersion(D, Args);
1133 CmdArgs.insert(CmdArgs.begin() + 1,
1134 Args.MakeArgString(Twine("--amdhsa-code-object-version=") +
1135 Twine(CodeObjVer)));
1136 CmdArgs.insert(CmdArgs.begin() + 1, "-mllvm");
1137 }
1138 }
1139
AddPreprocessingOptions(Compilation & C,const JobAction & JA,const Driver & D,const ArgList & Args,ArgStringList & CmdArgs,const InputInfo & Output,const InputInfoList & Inputs) const1140 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
1141 const Driver &D, const ArgList &Args,
1142 ArgStringList &CmdArgs,
1143 const InputInfo &Output,
1144 const InputInfoList &Inputs) const {
1145 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
1146
1147 CheckPreprocessingOptions(D, Args);
1148
1149 Args.AddLastArg(CmdArgs, options::OPT_C);
1150 Args.AddLastArg(CmdArgs, options::OPT_CC);
1151
1152 // Handle dependency file generation.
1153 Arg *ArgM = Args.getLastArg(options::OPT_MM);
1154 if (!ArgM)
1155 ArgM = Args.getLastArg(options::OPT_M);
1156 Arg *ArgMD = Args.getLastArg(options::OPT_MMD);
1157 if (!ArgMD)
1158 ArgMD = Args.getLastArg(options::OPT_MD);
1159
1160 // -M and -MM imply -w.
1161 if (ArgM)
1162 CmdArgs.push_back("-w");
1163 else
1164 ArgM = ArgMD;
1165
1166 if (ArgM) {
1167 // Determine the output location.
1168 const char *DepFile;
1169 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1170 DepFile = MF->getValue();
1171 C.addFailureResultFile(DepFile, &JA);
1172 } else if (Output.getType() == types::TY_Dependencies) {
1173 DepFile = Output.getFilename();
1174 } else if (!ArgMD) {
1175 DepFile = "-";
1176 } else {
1177 DepFile = getDependencyFileName(Args, Inputs);
1178 C.addFailureResultFile(DepFile, &JA);
1179 }
1180 CmdArgs.push_back("-dependency-file");
1181 CmdArgs.push_back(DepFile);
1182
1183 bool HasTarget = false;
1184 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1185 HasTarget = true;
1186 A->claim();
1187 if (A->getOption().matches(options::OPT_MT)) {
1188 A->render(Args, CmdArgs);
1189 } else {
1190 CmdArgs.push_back("-MT");
1191 SmallString<128> Quoted;
1192 QuoteTarget(A->getValue(), Quoted);
1193 CmdArgs.push_back(Args.MakeArgString(Quoted));
1194 }
1195 }
1196
1197 // Add a default target if one wasn't specified.
1198 if (!HasTarget) {
1199 const char *DepTarget;
1200
1201 // If user provided -o, that is the dependency target, except
1202 // when we are only generating a dependency file.
1203 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1204 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1205 DepTarget = OutputOpt->getValue();
1206 } else {
1207 // Otherwise derive from the base input.
1208 //
1209 // FIXME: This should use the computed output file location.
1210 SmallString<128> P(Inputs[0].getBaseInput());
1211 llvm::sys::path::replace_extension(P, "o");
1212 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1213 }
1214
1215 CmdArgs.push_back("-MT");
1216 SmallString<128> Quoted;
1217 QuoteTarget(DepTarget, Quoted);
1218 CmdArgs.push_back(Args.MakeArgString(Quoted));
1219 }
1220
1221 if (ArgM->getOption().matches(options::OPT_M) ||
1222 ArgM->getOption().matches(options::OPT_MD))
1223 CmdArgs.push_back("-sys-header-deps");
1224 if ((isa<PrecompileJobAction>(JA) &&
1225 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1226 Args.hasArg(options::OPT_fmodule_file_deps))
1227 CmdArgs.push_back("-module-file-deps");
1228 }
1229
1230 if (Args.hasArg(options::OPT_MG)) {
1231 if (!ArgM || ArgM->getOption().matches(options::OPT_MD) ||
1232 ArgM->getOption().matches(options::OPT_MMD))
1233 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1234 CmdArgs.push_back("-MG");
1235 }
1236
1237 Args.AddLastArg(CmdArgs, options::OPT_MP);
1238 Args.AddLastArg(CmdArgs, options::OPT_MV);
1239
1240 // Add offload include arguments specific for CUDA/HIP. This must happen
1241 // before we -I or -include anything else, because we must pick up the
1242 // CUDA/HIP headers from the particular CUDA/ROCm installation, rather than
1243 // from e.g. /usr/local/include.
1244 if (JA.isOffloading(Action::OFK_Cuda))
1245 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1246 if (JA.isOffloading(Action::OFK_HIP))
1247 getToolChain().AddHIPIncludeArgs(Args, CmdArgs);
1248
1249 // If we are offloading to a target via OpenMP we need to include the
1250 // openmp_wrappers folder which contains alternative system headers.
1251 if (JA.isDeviceOffloading(Action::OFK_OpenMP) &&
1252 getToolChain().getTriple().isNVPTX()){
1253 if (!Args.hasArg(options::OPT_nobuiltininc)) {
1254 // Add openmp_wrappers/* to our system include path. This lets us wrap
1255 // standard library headers.
1256 SmallString<128> P(D.ResourceDir);
1257 llvm::sys::path::append(P, "include");
1258 llvm::sys::path::append(P, "openmp_wrappers");
1259 CmdArgs.push_back("-internal-isystem");
1260 CmdArgs.push_back(Args.MakeArgString(P));
1261 }
1262
1263 CmdArgs.push_back("-include");
1264 CmdArgs.push_back("__clang_openmp_device_functions.h");
1265 }
1266
1267 // Add -i* options, and automatically translate to
1268 // -include-pch/-include-pth for transparent PCH support. It's
1269 // wonky, but we include looking for .gch so we can support seamless
1270 // replacement into a build system already set up to be generating
1271 // .gch files.
1272
1273 if (getToolChain().getDriver().IsCLMode()) {
1274 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1275 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1276 if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1277 JA.getKind() <= Action::AssembleJobClass) {
1278 CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1279 // -fpch-instantiate-templates is the default when creating
1280 // precomp using /Yc
1281 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
1282 options::OPT_fno_pch_instantiate_templates, true))
1283 CmdArgs.push_back(Args.MakeArgString("-fpch-instantiate-templates"));
1284 }
1285 if (YcArg || YuArg) {
1286 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1287 if (!isa<PrecompileJobAction>(JA)) {
1288 CmdArgs.push_back("-include-pch");
1289 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1290 C, !ThroughHeader.empty()
1291 ? ThroughHeader
1292 : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1293 }
1294
1295 if (ThroughHeader.empty()) {
1296 CmdArgs.push_back(Args.MakeArgString(
1297 Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1298 } else {
1299 CmdArgs.push_back(
1300 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1301 }
1302 }
1303 }
1304
1305 bool RenderedImplicitInclude = false;
1306 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1307 if (A->getOption().matches(options::OPT_include)) {
1308 // Handling of gcc-style gch precompiled headers.
1309 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1310 RenderedImplicitInclude = true;
1311
1312 bool FoundPCH = false;
1313 SmallString<128> P(A->getValue());
1314 // We want the files to have a name like foo.h.pch. Add a dummy extension
1315 // so that replace_extension does the right thing.
1316 P += ".dummy";
1317 llvm::sys::path::replace_extension(P, "pch");
1318 if (llvm::sys::fs::exists(P))
1319 FoundPCH = true;
1320
1321 if (!FoundPCH) {
1322 llvm::sys::path::replace_extension(P, "gch");
1323 if (llvm::sys::fs::exists(P)) {
1324 FoundPCH = true;
1325 }
1326 }
1327
1328 if (FoundPCH) {
1329 if (IsFirstImplicitInclude) {
1330 A->claim();
1331 CmdArgs.push_back("-include-pch");
1332 CmdArgs.push_back(Args.MakeArgString(P));
1333 continue;
1334 } else {
1335 // Ignore the PCH if not first on command line and emit warning.
1336 D.Diag(diag::warn_drv_pch_not_first_include) << P
1337 << A->getAsString(Args);
1338 }
1339 }
1340 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1341 // Handling of paths which must come late. These entries are handled by
1342 // the toolchain itself after the resource dir is inserted in the right
1343 // search order.
1344 // Do not claim the argument so that the use of the argument does not
1345 // silently go unnoticed on toolchains which do not honour the option.
1346 continue;
1347 } else if (A->getOption().matches(options::OPT_stdlibxx_isystem)) {
1348 // Translated to -internal-isystem by the driver, no need to pass to cc1.
1349 continue;
1350 }
1351
1352 // Not translated, render as usual.
1353 A->claim();
1354 A->render(Args, CmdArgs);
1355 }
1356
1357 Args.AddAllArgs(CmdArgs,
1358 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1359 options::OPT_F, options::OPT_index_header_map});
1360
1361 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1362
1363 // FIXME: There is a very unfortunate problem here, some troubled
1364 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1365 // really support that we would have to parse and then translate
1366 // those options. :(
1367 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1368 options::OPT_Xpreprocessor);
1369
1370 // -I- is a deprecated GCC feature, reject it.
1371 if (Arg *A = Args.getLastArg(options::OPT_I_))
1372 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1373
1374 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1375 // -isysroot to the CC1 invocation.
1376 StringRef sysroot = C.getSysRoot();
1377 if (sysroot != "") {
1378 if (!Args.hasArg(options::OPT_isysroot)) {
1379 CmdArgs.push_back("-isysroot");
1380 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1381 }
1382 }
1383
1384 // Parse additional include paths from environment variables.
1385 // FIXME: We should probably sink the logic for handling these from the
1386 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1387 // CPATH - included following the user specified includes (but prior to
1388 // builtin and standard includes).
1389 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1390 // C_INCLUDE_PATH - system includes enabled when compiling C.
1391 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1392 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1393 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1394 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1395 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1396 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1397 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1398
1399 // While adding the include arguments, we also attempt to retrieve the
1400 // arguments of related offloading toolchains or arguments that are specific
1401 // of an offloading programming model.
1402
1403 // Add C++ include arguments, if needed.
1404 if (types::isCXX(Inputs[0].getType())) {
1405 bool HasStdlibxxIsystem = Args.hasArg(options::OPT_stdlibxx_isystem);
1406 forAllAssociatedToolChains(
1407 C, JA, getToolChain(),
1408 [&Args, &CmdArgs, HasStdlibxxIsystem](const ToolChain &TC) {
1409 HasStdlibxxIsystem ? TC.AddClangCXXStdlibIsystemArgs(Args, CmdArgs)
1410 : TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1411 });
1412 }
1413
1414 // Add system include arguments for all targets but IAMCU.
1415 if (!IsIAMCU)
1416 forAllAssociatedToolChains(C, JA, getToolChain(),
1417 [&Args, &CmdArgs](const ToolChain &TC) {
1418 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1419 });
1420 else {
1421 // For IAMCU add special include arguments.
1422 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1423 }
1424
1425 addMacroPrefixMapArg(D, Args, CmdArgs);
1426 addCoveragePrefixMapArg(D, Args, CmdArgs);
1427 }
1428
1429 // FIXME: Move to target hook.
isSignedCharDefault(const llvm::Triple & Triple)1430 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1431 switch (Triple.getArch()) {
1432 default:
1433 return true;
1434
1435 case llvm::Triple::aarch64:
1436 case llvm::Triple::aarch64_32:
1437 case llvm::Triple::aarch64_be:
1438 case llvm::Triple::arm:
1439 case llvm::Triple::armeb:
1440 case llvm::Triple::thumb:
1441 case llvm::Triple::thumbeb:
1442 if (Triple.isOSDarwin() || Triple.isOSWindows())
1443 return true;
1444 return false;
1445
1446 case llvm::Triple::ppc:
1447 case llvm::Triple::ppc64:
1448 if (Triple.isOSDarwin())
1449 return true;
1450 return false;
1451
1452 case llvm::Triple::hexagon:
1453 case llvm::Triple::ppcle:
1454 case llvm::Triple::ppc64le:
1455 case llvm::Triple::riscv32:
1456 case llvm::Triple::riscv64:
1457 case llvm::Triple::systemz:
1458 case llvm::Triple::xcore:
1459 return false;
1460 }
1461 }
1462
hasMultipleInvocations(const llvm::Triple & Triple,const ArgList & Args)1463 static bool hasMultipleInvocations(const llvm::Triple &Triple,
1464 const ArgList &Args) {
1465 // Supported only on Darwin where we invoke the compiler multiple times
1466 // followed by an invocation to lipo.
1467 if (!Triple.isOSDarwin())
1468 return false;
1469 // If more than one "-arch <arch>" is specified, we're targeting multiple
1470 // architectures resulting in a fat binary.
1471 return Args.getAllArgValues(options::OPT_arch).size() > 1;
1472 }
1473
checkRemarksOptions(const Driver & D,const ArgList & Args,const llvm::Triple & Triple)1474 static bool checkRemarksOptions(const Driver &D, const ArgList &Args,
1475 const llvm::Triple &Triple) {
1476 // When enabling remarks, we need to error if:
1477 // * The remark file is specified but we're targeting multiple architectures,
1478 // which means more than one remark file is being generated.
1479 bool hasMultipleInvocations = ::hasMultipleInvocations(Triple, Args);
1480 bool hasExplicitOutputFile =
1481 Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1482 if (hasMultipleInvocations && hasExplicitOutputFile) {
1483 D.Diag(diag::err_drv_invalid_output_with_multiple_archs)
1484 << "-foptimization-record-file";
1485 return false;
1486 }
1487 return true;
1488 }
1489
renderRemarksOptions(const ArgList & Args,ArgStringList & CmdArgs,const llvm::Triple & Triple,const InputInfo & Input,const InputInfo & Output,const JobAction & JA)1490 static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,
1491 const llvm::Triple &Triple,
1492 const InputInfo &Input,
1493 const InputInfo &Output, const JobAction &JA) {
1494 StringRef Format = "yaml";
1495 if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
1496 Format = A->getValue();
1497
1498 CmdArgs.push_back("-opt-record-file");
1499
1500 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1501 if (A) {
1502 CmdArgs.push_back(A->getValue());
1503 } else {
1504 bool hasMultipleArchs =
1505 Triple.isOSDarwin() && // Only supported on Darwin platforms.
1506 Args.getAllArgValues(options::OPT_arch).size() > 1;
1507
1508 SmallString<128> F;
1509
1510 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
1511 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
1512 F = FinalOutput->getValue();
1513 } else {
1514 if (Format != "yaml" && // For YAML, keep the original behavior.
1515 Triple.isOSDarwin() && // Enable this only on darwin, since it's the only platform supporting .dSYM bundles.
1516 Output.isFilename())
1517 F = Output.getFilename();
1518 }
1519
1520 if (F.empty()) {
1521 // Use the input filename.
1522 F = llvm::sys::path::stem(Input.getBaseInput());
1523
1524 // If we're compiling for an offload architecture (i.e. a CUDA device),
1525 // we need to make the file name for the device compilation different
1526 // from the host compilation.
1527 if (!JA.isDeviceOffloading(Action::OFK_None) &&
1528 !JA.isDeviceOffloading(Action::OFK_Host)) {
1529 llvm::sys::path::replace_extension(F, "");
1530 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
1531 Triple.normalize());
1532 F += "-";
1533 F += JA.getOffloadingArch();
1534 }
1535 }
1536
1537 // If we're having more than one "-arch", we should name the files
1538 // differently so that every cc1 invocation writes to a different file.
1539 // We're doing that by appending "-<arch>" with "<arch>" being the arch
1540 // name from the triple.
1541 if (hasMultipleArchs) {
1542 // First, remember the extension.
1543 SmallString<64> OldExtension = llvm::sys::path::extension(F);
1544 // then, remove it.
1545 llvm::sys::path::replace_extension(F, "");
1546 // attach -<arch> to it.
1547 F += "-";
1548 F += Triple.getArchName();
1549 // put back the extension.
1550 llvm::sys::path::replace_extension(F, OldExtension);
1551 }
1552
1553 SmallString<32> Extension;
1554 Extension += "opt.";
1555 Extension += Format;
1556
1557 llvm::sys::path::replace_extension(F, Extension);
1558 CmdArgs.push_back(Args.MakeArgString(F));
1559 }
1560
1561 if (const Arg *A =
1562 Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
1563 CmdArgs.push_back("-opt-record-passes");
1564 CmdArgs.push_back(A->getValue());
1565 }
1566
1567 if (!Format.empty()) {
1568 CmdArgs.push_back("-opt-record-format");
1569 CmdArgs.push_back(Format.data());
1570 }
1571 }
1572
AddAAPCSVolatileBitfieldArgs(const ArgList & Args,ArgStringList & CmdArgs)1573 void AddAAPCSVolatileBitfieldArgs(const ArgList &Args, ArgStringList &CmdArgs) {
1574 if (!Args.hasFlag(options::OPT_faapcs_bitfield_width,
1575 options::OPT_fno_aapcs_bitfield_width, true))
1576 CmdArgs.push_back("-fno-aapcs-bitfield-width");
1577
1578 if (Args.getLastArg(options::OPT_ForceAAPCSBitfieldLoad))
1579 CmdArgs.push_back("-faapcs-bitfield-load");
1580 }
1581
1582 namespace {
RenderARMABI(const llvm::Triple & Triple,const ArgList & Args,ArgStringList & CmdArgs)1583 void RenderARMABI(const llvm::Triple &Triple, const ArgList &Args,
1584 ArgStringList &CmdArgs) {
1585 // Select the ABI to use.
1586 // FIXME: Support -meabi.
1587 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1588 const char *ABIName = nullptr;
1589 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1590 ABIName = A->getValue();
1591 } else {
1592 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1593 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1594 }
1595
1596 CmdArgs.push_back("-target-abi");
1597 CmdArgs.push_back(ABIName);
1598 }
1599 }
1600
AddARMTargetArgs(const llvm::Triple & Triple,const ArgList & Args,ArgStringList & CmdArgs,bool KernelOrKext) const1601 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1602 ArgStringList &CmdArgs, bool KernelOrKext) const {
1603 RenderARMABI(Triple, Args, CmdArgs);
1604
1605 // Determine floating point ABI from the options & target defaults.
1606 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1607 if (ABI == arm::FloatABI::Soft) {
1608 // Floating point operations and argument passing are soft.
1609 // FIXME: This changes CPP defines, we need -target-soft-float.
1610 CmdArgs.push_back("-msoft-float");
1611 CmdArgs.push_back("-mfloat-abi");
1612 CmdArgs.push_back("soft");
1613 } else if (ABI == arm::FloatABI::SoftFP) {
1614 // Floating point operations are hard, but argument passing is soft.
1615 CmdArgs.push_back("-mfloat-abi");
1616 CmdArgs.push_back("soft");
1617 } else {
1618 // Floating point operations and argument passing are hard.
1619 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1620 CmdArgs.push_back("-mfloat-abi");
1621 CmdArgs.push_back("hard");
1622 }
1623
1624 // Forward the -mglobal-merge option for explicit control over the pass.
1625 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1626 options::OPT_mno_global_merge)) {
1627 CmdArgs.push_back("-mllvm");
1628 if (A->getOption().matches(options::OPT_mno_global_merge))
1629 CmdArgs.push_back("-arm-global-merge=false");
1630 else
1631 CmdArgs.push_back("-arm-global-merge=true");
1632 }
1633
1634 if (!Args.hasFlag(options::OPT_mimplicit_float,
1635 options::OPT_mno_implicit_float, true))
1636 CmdArgs.push_back("-no-implicit-float");
1637
1638 if (Args.getLastArg(options::OPT_mcmse))
1639 CmdArgs.push_back("-mcmse");
1640
1641 AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);
1642 }
1643
RenderTargetOptions(const llvm::Triple & EffectiveTriple,const ArgList & Args,bool KernelOrKext,ArgStringList & CmdArgs) const1644 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1645 const ArgList &Args, bool KernelOrKext,
1646 ArgStringList &CmdArgs) const {
1647 const ToolChain &TC = getToolChain();
1648
1649 // Add the target features
1650 getTargetFeatures(TC.getDriver(), EffectiveTriple, Args, CmdArgs, false);
1651
1652 // Add target specific flags.
1653 switch (TC.getArch()) {
1654 default:
1655 break;
1656
1657 case llvm::Triple::arm:
1658 case llvm::Triple::armeb:
1659 case llvm::Triple::thumb:
1660 case llvm::Triple::thumbeb:
1661 // Use the effective triple, which takes into account the deployment target.
1662 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1663 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1664 break;
1665
1666 case llvm::Triple::aarch64:
1667 case llvm::Triple::aarch64_32:
1668 case llvm::Triple::aarch64_be:
1669 AddAArch64TargetArgs(Args, CmdArgs);
1670 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1671 break;
1672
1673 case llvm::Triple::mips:
1674 case llvm::Triple::mipsel:
1675 case llvm::Triple::mips64:
1676 case llvm::Triple::mips64el:
1677 AddMIPSTargetArgs(Args, CmdArgs);
1678 break;
1679
1680 case llvm::Triple::ppc:
1681 case llvm::Triple::ppcle:
1682 case llvm::Triple::ppc64:
1683 case llvm::Triple::ppc64le:
1684 AddPPCTargetArgs(Args, CmdArgs);
1685 break;
1686
1687 case llvm::Triple::riscv32:
1688 case llvm::Triple::riscv64:
1689 AddRISCVTargetArgs(Args, CmdArgs);
1690 break;
1691
1692 case llvm::Triple::sparc:
1693 case llvm::Triple::sparcel:
1694 case llvm::Triple::sparcv9:
1695 AddSparcTargetArgs(Args, CmdArgs);
1696 break;
1697
1698 case llvm::Triple::systemz:
1699 AddSystemZTargetArgs(Args, CmdArgs);
1700 break;
1701
1702 case llvm::Triple::x86:
1703 case llvm::Triple::x86_64:
1704 AddX86TargetArgs(Args, CmdArgs);
1705 break;
1706
1707 case llvm::Triple::lanai:
1708 AddLanaiTargetArgs(Args, CmdArgs);
1709 break;
1710
1711 case llvm::Triple::hexagon:
1712 AddHexagonTargetArgs(Args, CmdArgs);
1713 break;
1714
1715 case llvm::Triple::wasm32:
1716 case llvm::Triple::wasm64:
1717 AddWebAssemblyTargetArgs(Args, CmdArgs);
1718 break;
1719
1720 case llvm::Triple::ve:
1721 AddVETargetArgs(Args, CmdArgs);
1722 break;
1723 }
1724 }
1725
1726 namespace {
RenderAArch64ABI(const llvm::Triple & Triple,const ArgList & Args,ArgStringList & CmdArgs)1727 void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1728 ArgStringList &CmdArgs) {
1729 const char *ABIName = nullptr;
1730 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1731 ABIName = A->getValue();
1732 else if (Triple.isOSDarwin())
1733 ABIName = "darwinpcs";
1734 else
1735 ABIName = "aapcs";
1736
1737 CmdArgs.push_back("-target-abi");
1738 CmdArgs.push_back(ABIName);
1739 }
1740 }
1741
AddAArch64TargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const1742 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1743 ArgStringList &CmdArgs) const {
1744 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1745
1746 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1747 Args.hasArg(options::OPT_mkernel) ||
1748 Args.hasArg(options::OPT_fapple_kext))
1749 CmdArgs.push_back("-disable-red-zone");
1750
1751 if (!Args.hasFlag(options::OPT_mimplicit_float,
1752 options::OPT_mno_implicit_float, true))
1753 CmdArgs.push_back("-no-implicit-float");
1754
1755 RenderAArch64ABI(Triple, Args, CmdArgs);
1756
1757 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1758 options::OPT_mno_fix_cortex_a53_835769)) {
1759 CmdArgs.push_back("-mllvm");
1760 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1761 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1762 else
1763 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1764 } else if (Triple.isAndroid()) {
1765 // Enabled A53 errata (835769) workaround by default on android
1766 CmdArgs.push_back("-mllvm");
1767 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1768 }
1769
1770 // Forward the -mglobal-merge option for explicit control over the pass.
1771 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1772 options::OPT_mno_global_merge)) {
1773 CmdArgs.push_back("-mllvm");
1774 if (A->getOption().matches(options::OPT_mno_global_merge))
1775 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1776 else
1777 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1778 }
1779
1780 // Enable/disable return address signing and indirect branch targets.
1781 if (Arg *A = Args.getLastArg(options::OPT_msign_return_address_EQ,
1782 options::OPT_mbranch_protection_EQ)) {
1783
1784 const Driver &D = getToolChain().getDriver();
1785
1786 StringRef Scope, Key;
1787 bool IndirectBranches;
1788
1789 if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1790 Scope = A->getValue();
1791 if (!Scope.equals("none") && !Scope.equals("non-leaf") &&
1792 !Scope.equals("all"))
1793 D.Diag(diag::err_invalid_branch_protection)
1794 << Scope << A->getAsString(Args);
1795 Key = "a_key";
1796 IndirectBranches = false;
1797 } else {
1798 StringRef Err;
1799 llvm::AArch64::ParsedBranchProtection PBP;
1800 if (!llvm::AArch64::parseBranchProtection(A->getValue(), PBP, Err))
1801 D.Diag(diag::err_invalid_branch_protection)
1802 << Err << A->getAsString(Args);
1803 Scope = PBP.Scope;
1804 Key = PBP.Key;
1805 IndirectBranches = PBP.BranchTargetEnforcement;
1806 }
1807
1808 CmdArgs.push_back(
1809 Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1810 CmdArgs.push_back(
1811 Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1812 if (IndirectBranches)
1813 CmdArgs.push_back("-mbranch-target-enforce");
1814 }
1815
1816 // Handle -msve_vector_bits=<bits>
1817 if (Arg *A = Args.getLastArg(options::OPT_msve_vector_bits_EQ)) {
1818 StringRef Val = A->getValue();
1819 const Driver &D = getToolChain().getDriver();
1820 if (Val.equals("128") || Val.equals("256") || Val.equals("512") ||
1821 Val.equals("1024") || Val.equals("2048"))
1822 CmdArgs.push_back(
1823 Args.MakeArgString(llvm::Twine("-msve-vector-bits=") + Val));
1824 // Silently drop requests for vector-length agnostic code as it's implied.
1825 else if (!Val.equals("scalable"))
1826 // Handle the unsupported values passed to msve-vector-bits.
1827 D.Diag(diag::err_drv_unsupported_option_argument)
1828 << A->getOption().getName() << Val;
1829 }
1830
1831 AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);
1832 }
1833
AddMIPSTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const1834 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1835 ArgStringList &CmdArgs) const {
1836 const Driver &D = getToolChain().getDriver();
1837 StringRef CPUName;
1838 StringRef ABIName;
1839 const llvm::Triple &Triple = getToolChain().getTriple();
1840 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1841
1842 CmdArgs.push_back("-target-abi");
1843 CmdArgs.push_back(ABIName.data());
1844
1845 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args, Triple);
1846 if (ABI == mips::FloatABI::Soft) {
1847 // Floating point operations and argument passing are soft.
1848 CmdArgs.push_back("-msoft-float");
1849 CmdArgs.push_back("-mfloat-abi");
1850 CmdArgs.push_back("soft");
1851 } else {
1852 // Floating point operations and argument passing are hard.
1853 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1854 CmdArgs.push_back("-mfloat-abi");
1855 CmdArgs.push_back("hard");
1856 }
1857
1858 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1859 options::OPT_mno_ldc1_sdc1)) {
1860 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1861 CmdArgs.push_back("-mllvm");
1862 CmdArgs.push_back("-mno-ldc1-sdc1");
1863 }
1864 }
1865
1866 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1867 options::OPT_mno_check_zero_division)) {
1868 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1869 CmdArgs.push_back("-mllvm");
1870 CmdArgs.push_back("-mno-check-zero-division");
1871 }
1872 }
1873
1874 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1875 StringRef v = A->getValue();
1876 CmdArgs.push_back("-mllvm");
1877 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1878 A->claim();
1879 }
1880
1881 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1882 Arg *ABICalls =
1883 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1884
1885 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1886 // -mgpopt is the default for static, -fno-pic environments but these two
1887 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1888 // the only case where -mllvm -mgpopt is passed.
1889 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1890 // passed explicitly when compiling something with -mabicalls
1891 // (implictly) in affect. Currently the warning is in the backend.
1892 //
1893 // When the ABI in use is N64, we also need to determine the PIC mode that
1894 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1895 bool NoABICalls =
1896 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1897
1898 llvm::Reloc::Model RelocationModel;
1899 unsigned PICLevel;
1900 bool IsPIE;
1901 std::tie(RelocationModel, PICLevel, IsPIE) =
1902 ParsePICArgs(getToolChain(), Args);
1903
1904 NoABICalls = NoABICalls ||
1905 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1906
1907 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1908 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1909 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1910 CmdArgs.push_back("-mllvm");
1911 CmdArgs.push_back("-mgpopt");
1912
1913 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1914 options::OPT_mno_local_sdata);
1915 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1916 options::OPT_mno_extern_sdata);
1917 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1918 options::OPT_mno_embedded_data);
1919 if (LocalSData) {
1920 CmdArgs.push_back("-mllvm");
1921 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1922 CmdArgs.push_back("-mlocal-sdata=1");
1923 } else {
1924 CmdArgs.push_back("-mlocal-sdata=0");
1925 }
1926 LocalSData->claim();
1927 }
1928
1929 if (ExternSData) {
1930 CmdArgs.push_back("-mllvm");
1931 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1932 CmdArgs.push_back("-mextern-sdata=1");
1933 } else {
1934 CmdArgs.push_back("-mextern-sdata=0");
1935 }
1936 ExternSData->claim();
1937 }
1938
1939 if (EmbeddedData) {
1940 CmdArgs.push_back("-mllvm");
1941 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1942 CmdArgs.push_back("-membedded-data=1");
1943 } else {
1944 CmdArgs.push_back("-membedded-data=0");
1945 }
1946 EmbeddedData->claim();
1947 }
1948
1949 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1950 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1951
1952 if (GPOpt)
1953 GPOpt->claim();
1954
1955 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1956 StringRef Val = StringRef(A->getValue());
1957 if (mips::hasCompactBranches(CPUName)) {
1958 if (Val == "never" || Val == "always" || Val == "optimal") {
1959 CmdArgs.push_back("-mllvm");
1960 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1961 } else
1962 D.Diag(diag::err_drv_unsupported_option_argument)
1963 << A->getOption().getName() << Val;
1964 } else
1965 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1966 }
1967
1968 if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,
1969 options::OPT_mno_relax_pic_calls)) {
1970 if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {
1971 CmdArgs.push_back("-mllvm");
1972 CmdArgs.push_back("-mips-jalr-reloc=0");
1973 }
1974 }
1975 }
1976
AddPPCTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const1977 void Clang::AddPPCTargetArgs(const ArgList &Args,
1978 ArgStringList &CmdArgs) const {
1979 // Select the ABI to use.
1980 const char *ABIName = nullptr;
1981 const llvm::Triple &T = getToolChain().getTriple();
1982 if (T.isOSBinFormatELF()) {
1983 switch (getToolChain().getArch()) {
1984 case llvm::Triple::ppc64: {
1985 if ((T.isOSFreeBSD() && T.getOSMajorVersion() >= 13) ||
1986 T.isOSOpenBSD() || T.isMusl())
1987 ABIName = "elfv2";
1988 else
1989 ABIName = "elfv1";
1990 break;
1991 }
1992 case llvm::Triple::ppc64le:
1993 ABIName = "elfv2";
1994 break;
1995 default:
1996 break;
1997 }
1998 }
1999
2000 bool IEEELongDouble = false;
2001 for (const Arg *A : Args.filtered(options::OPT_mabi_EQ)) {
2002 StringRef V = A->getValue();
2003 if (V == "ieeelongdouble")
2004 IEEELongDouble = true;
2005 else if (V == "ibmlongdouble")
2006 IEEELongDouble = false;
2007 else if (V != "altivec")
2008 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
2009 // the option if given as we don't have backend support for any targets
2010 // that don't use the altivec abi.
2011 ABIName = A->getValue();
2012 }
2013 if (IEEELongDouble)
2014 CmdArgs.push_back("-mabi=ieeelongdouble");
2015
2016 ppc::FloatABI FloatABI =
2017 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
2018
2019 if (FloatABI == ppc::FloatABI::Soft) {
2020 // Floating point operations and argument passing are soft.
2021 CmdArgs.push_back("-msoft-float");
2022 CmdArgs.push_back("-mfloat-abi");
2023 CmdArgs.push_back("soft");
2024 } else {
2025 // Floating point operations and argument passing are hard.
2026 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
2027 CmdArgs.push_back("-mfloat-abi");
2028 CmdArgs.push_back("hard");
2029 }
2030
2031 if (ABIName) {
2032 CmdArgs.push_back("-target-abi");
2033 CmdArgs.push_back(ABIName);
2034 }
2035 }
2036
SetRISCVSmallDataLimit(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)2037 static void SetRISCVSmallDataLimit(const ToolChain &TC, const ArgList &Args,
2038 ArgStringList &CmdArgs) {
2039 const Driver &D = TC.getDriver();
2040 const llvm::Triple &Triple = TC.getTriple();
2041 // Default small data limitation is eight.
2042 const char *SmallDataLimit = "8";
2043 // Get small data limitation.
2044 if (Args.getLastArg(options::OPT_shared, options::OPT_fpic,
2045 options::OPT_fPIC)) {
2046 // Not support linker relaxation for PIC.
2047 SmallDataLimit = "0";
2048 if (Args.hasArg(options::OPT_G)) {
2049 D.Diag(diag::warn_drv_unsupported_sdata);
2050 }
2051 } else if (Args.getLastArgValue(options::OPT_mcmodel_EQ)
2052 .equals_lower("large") &&
2053 (Triple.getArch() == llvm::Triple::riscv64)) {
2054 // Not support linker relaxation for RV64 with large code model.
2055 SmallDataLimit = "0";
2056 if (Args.hasArg(options::OPT_G)) {
2057 D.Diag(diag::warn_drv_unsupported_sdata);
2058 }
2059 } else if (Arg *A = Args.getLastArg(options::OPT_G)) {
2060 SmallDataLimit = A->getValue();
2061 }
2062 // Forward the -msmall-data-limit= option.
2063 CmdArgs.push_back("-msmall-data-limit");
2064 CmdArgs.push_back(SmallDataLimit);
2065 }
2066
AddRISCVTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2067 void Clang::AddRISCVTargetArgs(const ArgList &Args,
2068 ArgStringList &CmdArgs) const {
2069 const llvm::Triple &Triple = getToolChain().getTriple();
2070 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
2071
2072 CmdArgs.push_back("-target-abi");
2073 CmdArgs.push_back(ABIName.data());
2074
2075 SetRISCVSmallDataLimit(getToolChain(), Args, CmdArgs);
2076
2077 std::string TuneCPU;
2078
2079 if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)) {
2080 StringRef Name = A->getValue();
2081
2082 Name = llvm::RISCV::resolveTuneCPUAlias(Name, Triple.isArch64Bit());
2083 TuneCPU = std::string(Name);
2084 }
2085
2086 if (!TuneCPU.empty()) {
2087 CmdArgs.push_back("-tune-cpu");
2088 CmdArgs.push_back(Args.MakeArgString(TuneCPU));
2089 }
2090 }
2091
AddSparcTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2092 void Clang::AddSparcTargetArgs(const ArgList &Args,
2093 ArgStringList &CmdArgs) const {
2094 sparc::FloatABI FloatABI =
2095 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
2096
2097 if (FloatABI == sparc::FloatABI::Soft) {
2098 // Floating point operations and argument passing are soft.
2099 CmdArgs.push_back("-msoft-float");
2100 CmdArgs.push_back("-mfloat-abi");
2101 CmdArgs.push_back("soft");
2102 } else {
2103 // Floating point operations and argument passing are hard.
2104 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
2105 CmdArgs.push_back("-mfloat-abi");
2106 CmdArgs.push_back("hard");
2107 }
2108 }
2109
AddSystemZTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2110 void Clang::AddSystemZTargetArgs(const ArgList &Args,
2111 ArgStringList &CmdArgs) const {
2112 bool HasBackchain = Args.hasFlag(options::OPT_mbackchain,
2113 options::OPT_mno_backchain, false);
2114 bool HasPackedStack = Args.hasFlag(options::OPT_mpacked_stack,
2115 options::OPT_mno_packed_stack, false);
2116 systemz::FloatABI FloatABI =
2117 systemz::getSystemZFloatABI(getToolChain().getDriver(), Args);
2118 bool HasSoftFloat = (FloatABI == systemz::FloatABI::Soft);
2119 if (HasBackchain && HasPackedStack && !HasSoftFloat) {
2120 const Driver &D = getToolChain().getDriver();
2121 D.Diag(diag::err_drv_unsupported_opt)
2122 << "-mpacked-stack -mbackchain -mhard-float";
2123 }
2124 if (HasBackchain)
2125 CmdArgs.push_back("-mbackchain");
2126 if (HasPackedStack)
2127 CmdArgs.push_back("-mpacked-stack");
2128 if (HasSoftFloat) {
2129 // Floating point operations and argument passing are soft.
2130 CmdArgs.push_back("-msoft-float");
2131 CmdArgs.push_back("-mfloat-abi");
2132 CmdArgs.push_back("soft");
2133 }
2134 }
2135
AddX86TargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2136 void Clang::AddX86TargetArgs(const ArgList &Args,
2137 ArgStringList &CmdArgs) const {
2138 const Driver &D = getToolChain().getDriver();
2139 addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/false);
2140
2141 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
2142 Args.hasArg(options::OPT_mkernel) ||
2143 Args.hasArg(options::OPT_fapple_kext))
2144 CmdArgs.push_back("-disable-red-zone");
2145
2146 if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
2147 options::OPT_mno_tls_direct_seg_refs, true))
2148 CmdArgs.push_back("-mno-tls-direct-seg-refs");
2149
2150 // Default to avoid implicit floating-point for kernel/kext code, but allow
2151 // that to be overridden with -mno-soft-float.
2152 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
2153 Args.hasArg(options::OPT_fapple_kext));
2154 if (Arg *A = Args.getLastArg(
2155 options::OPT_msoft_float, options::OPT_mno_soft_float,
2156 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
2157 const Option &O = A->getOption();
2158 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
2159 O.matches(options::OPT_msoft_float));
2160 }
2161 if (NoImplicitFloat)
2162 CmdArgs.push_back("-no-implicit-float");
2163
2164 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
2165 StringRef Value = A->getValue();
2166 if (Value == "intel" || Value == "att") {
2167 CmdArgs.push_back("-mllvm");
2168 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
2169 } else {
2170 D.Diag(diag::err_drv_unsupported_option_argument)
2171 << A->getOption().getName() << Value;
2172 }
2173 } else if (D.IsCLMode()) {
2174 CmdArgs.push_back("-mllvm");
2175 CmdArgs.push_back("-x86-asm-syntax=intel");
2176 }
2177
2178 // Set flags to support MCU ABI.
2179 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
2180 CmdArgs.push_back("-mfloat-abi");
2181 CmdArgs.push_back("soft");
2182 CmdArgs.push_back("-mstack-alignment=4");
2183 }
2184
2185 // Handle -mtune.
2186
2187 // Default to "generic" unless -march is present or targetting the PS4.
2188 std::string TuneCPU;
2189 if (!Args.hasArg(clang::driver::options::OPT_march_EQ) &&
2190 !getToolChain().getTriple().isPS4CPU())
2191 TuneCPU = "generic";
2192
2193 // Override based on -mtune.
2194 if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)) {
2195 StringRef Name = A->getValue();
2196
2197 if (Name == "native") {
2198 Name = llvm::sys::getHostCPUName();
2199 if (!Name.empty())
2200 TuneCPU = std::string(Name);
2201 } else
2202 TuneCPU = std::string(Name);
2203 }
2204
2205 if (!TuneCPU.empty()) {
2206 CmdArgs.push_back("-tune-cpu");
2207 CmdArgs.push_back(Args.MakeArgString(TuneCPU));
2208 }
2209 }
2210
AddHexagonTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2211 void Clang::AddHexagonTargetArgs(const ArgList &Args,
2212 ArgStringList &CmdArgs) const {
2213 CmdArgs.push_back("-mqdsp6-compat");
2214 CmdArgs.push_back("-Wreturn-type");
2215
2216 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
2217 CmdArgs.push_back("-mllvm");
2218 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
2219 Twine(G.getValue())));
2220 }
2221
2222 if (!Args.hasArg(options::OPT_fno_short_enums))
2223 CmdArgs.push_back("-fshort-enums");
2224 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
2225 CmdArgs.push_back("-mllvm");
2226 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
2227 }
2228 CmdArgs.push_back("-mllvm");
2229 CmdArgs.push_back("-machine-sink-split=0");
2230 }
2231
AddLanaiTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2232 void Clang::AddLanaiTargetArgs(const ArgList &Args,
2233 ArgStringList &CmdArgs) const {
2234 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
2235 StringRef CPUName = A->getValue();
2236
2237 CmdArgs.push_back("-target-cpu");
2238 CmdArgs.push_back(Args.MakeArgString(CPUName));
2239 }
2240 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
2241 StringRef Value = A->getValue();
2242 // Only support mregparm=4 to support old usage. Report error for all other
2243 // cases.
2244 int Mregparm;
2245 if (Value.getAsInteger(10, Mregparm)) {
2246 if (Mregparm != 4) {
2247 getToolChain().getDriver().Diag(
2248 diag::err_drv_unsupported_option_argument)
2249 << A->getOption().getName() << Value;
2250 }
2251 }
2252 }
2253 }
2254
AddWebAssemblyTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2255 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
2256 ArgStringList &CmdArgs) const {
2257 // Default to "hidden" visibility.
2258 if (!Args.hasArg(options::OPT_fvisibility_EQ,
2259 options::OPT_fvisibility_ms_compat)) {
2260 CmdArgs.push_back("-fvisibility");
2261 CmdArgs.push_back("hidden");
2262 }
2263 }
2264
AddVETargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const2265 void Clang::AddVETargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const {
2266 // Floating point operations and argument passing are hard.
2267 CmdArgs.push_back("-mfloat-abi");
2268 CmdArgs.push_back("hard");
2269 }
2270
DumpCompilationDatabase(Compilation & C,StringRef Filename,StringRef Target,const InputInfo & Output,const InputInfo & Input,const ArgList & Args) const2271 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
2272 StringRef Target, const InputInfo &Output,
2273 const InputInfo &Input, const ArgList &Args) const {
2274 // If this is a dry run, do not create the compilation database file.
2275 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2276 return;
2277
2278 using llvm::yaml::escape;
2279 const Driver &D = getToolChain().getDriver();
2280
2281 if (!CompilationDatabase) {
2282 std::error_code EC;
2283 auto File = std::make_unique<llvm::raw_fd_ostream>(
2284 Filename, EC, llvm::sys::fs::OF_TextWithCRLF);
2285 if (EC) {
2286 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
2287 << EC.message();
2288 return;
2289 }
2290 CompilationDatabase = std::move(File);
2291 }
2292 auto &CDB = *CompilationDatabase;
2293 auto CWD = D.getVFS().getCurrentWorkingDirectory();
2294 if (!CWD)
2295 CWD = ".";
2296 CDB << "{ \"directory\": \"" << escape(*CWD) << "\"";
2297 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
2298 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
2299 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
2300 SmallString<128> Buf;
2301 Buf = "-x";
2302 Buf += types::getTypeName(Input.getType());
2303 CDB << ", \"" << escape(Buf) << "\"";
2304 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
2305 Buf = "--sysroot=";
2306 Buf += D.SysRoot;
2307 CDB << ", \"" << escape(Buf) << "\"";
2308 }
2309 CDB << ", \"" << escape(Input.getFilename()) << "\"";
2310 for (auto &A: Args) {
2311 auto &O = A->getOption();
2312 // Skip language selection, which is positional.
2313 if (O.getID() == options::OPT_x)
2314 continue;
2315 // Skip writing dependency output and the compilation database itself.
2316 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
2317 continue;
2318 if (O.getID() == options::OPT_gen_cdb_fragment_path)
2319 continue;
2320 // Skip inputs.
2321 if (O.getKind() == Option::InputClass)
2322 continue;
2323 // All other arguments are quoted and appended.
2324 ArgStringList ASL;
2325 A->render(Args, ASL);
2326 for (auto &it: ASL)
2327 CDB << ", \"" << escape(it) << "\"";
2328 }
2329 Buf = "--target=";
2330 Buf += Target;
2331 CDB << ", \"" << escape(Buf) << "\"]},\n";
2332 }
2333
DumpCompilationDatabaseFragmentToDir(StringRef Dir,Compilation & C,StringRef Target,const InputInfo & Output,const InputInfo & Input,const llvm::opt::ArgList & Args) const2334 void Clang::DumpCompilationDatabaseFragmentToDir(
2335 StringRef Dir, Compilation &C, StringRef Target, const InputInfo &Output,
2336 const InputInfo &Input, const llvm::opt::ArgList &Args) const {
2337 // If this is a dry run, do not create the compilation database file.
2338 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2339 return;
2340
2341 if (CompilationDatabase)
2342 DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2343
2344 SmallString<256> Path = Dir;
2345 const auto &Driver = C.getDriver();
2346 Driver.getVFS().makeAbsolute(Path);
2347 auto Err = llvm::sys::fs::create_directory(Path, /*IgnoreExisting=*/true);
2348 if (Err) {
2349 Driver.Diag(diag::err_drv_compilationdatabase) << Dir << Err.message();
2350 return;
2351 }
2352
2353 llvm::sys::path::append(
2354 Path,
2355 Twine(llvm::sys::path::filename(Input.getFilename())) + ".%%%%.json");
2356 int FD;
2357 SmallString<256> TempPath;
2358 Err = llvm::sys::fs::createUniqueFile(Path, FD, TempPath,
2359 llvm::sys::fs::OF_Text);
2360 if (Err) {
2361 Driver.Diag(diag::err_drv_compilationdatabase) << Path << Err.message();
2362 return;
2363 }
2364 CompilationDatabase =
2365 std::make_unique<llvm::raw_fd_ostream>(FD, /*shouldClose=*/true);
2366 DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2367 }
2368
CheckARMImplicitITArg(StringRef Value)2369 static bool CheckARMImplicitITArg(StringRef Value) {
2370 return Value == "always" || Value == "never" || Value == "arm" ||
2371 Value == "thumb";
2372 }
2373
AddARMImplicitITArgs(const ArgList & Args,ArgStringList & CmdArgs,StringRef Value)2374 static void AddARMImplicitITArgs(const ArgList &Args, ArgStringList &CmdArgs,
2375 StringRef Value) {
2376 CmdArgs.push_back("-mllvm");
2377 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2378 }
2379
CollectArgsForIntegratedAssembler(Compilation & C,const ArgList & Args,ArgStringList & CmdArgs,const Driver & D)2380 static void CollectArgsForIntegratedAssembler(Compilation &C,
2381 const ArgList &Args,
2382 ArgStringList &CmdArgs,
2383 const Driver &D) {
2384 if (UseRelaxAll(C, Args))
2385 CmdArgs.push_back("-mrelax-all");
2386
2387 // Only default to -mincremental-linker-compatible if we think we are
2388 // targeting the MSVC linker.
2389 bool DefaultIncrementalLinkerCompatible =
2390 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2391 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
2392 options::OPT_mno_incremental_linker_compatible,
2393 DefaultIncrementalLinkerCompatible))
2394 CmdArgs.push_back("-mincremental-linker-compatible");
2395
2396 // If you add more args here, also add them to the block below that
2397 // starts with "// If CollectArgsForIntegratedAssembler() isn't called below".
2398
2399 // When passing -I arguments to the assembler we sometimes need to
2400 // unconditionally take the next argument. For example, when parsing
2401 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2402 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2403 // arg after parsing the '-I' arg.
2404 bool TakeNextArg = false;
2405
2406 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2407 bool UseNoExecStack = C.getDefaultToolChain().isNoExecStackDefault();
2408 const char *MipsTargetFeature = nullptr;
2409 StringRef ImplicitIt;
2410 for (const Arg *A :
2411 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler,
2412 options::OPT_mimplicit_it_EQ)) {
2413 if (A->getOption().getID() == options::OPT_mimplicit_it_EQ) {
2414 switch (C.getDefaultToolChain().getArch()) {
2415 case llvm::Triple::arm:
2416 case llvm::Triple::armeb:
2417 case llvm::Triple::thumb:
2418 case llvm::Triple::thumbeb:
2419 // Only store the value; the last value set takes effect.
2420 ImplicitIt = A->getValue();
2421 if (!CheckARMImplicitITArg(ImplicitIt))
2422 D.Diag(diag::err_drv_unsupported_option_argument)
2423 << A->getOption().getName() << ImplicitIt;
2424 continue;
2425 default:
2426 break;
2427 }
2428 }
2429
2430 A->claim();
2431
2432 for (StringRef Value : A->getValues()) {
2433 if (TakeNextArg) {
2434 CmdArgs.push_back(Value.data());
2435 TakeNextArg = false;
2436 continue;
2437 }
2438
2439 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2440 Value == "-mbig-obj")
2441 continue; // LLVM handles bigobj automatically
2442
2443 switch (C.getDefaultToolChain().getArch()) {
2444 default:
2445 break;
2446 case llvm::Triple::thumb:
2447 case llvm::Triple::thumbeb:
2448 case llvm::Triple::arm:
2449 case llvm::Triple::armeb:
2450 if (Value.startswith("-mimplicit-it=")) {
2451 // Only store the value; the last value set takes effect.
2452 ImplicitIt = Value.split("=").second;
2453 if (CheckARMImplicitITArg(ImplicitIt))
2454 continue;
2455 }
2456 if (Value == "-mthumb")
2457 // -mthumb has already been processed in ComputeLLVMTriple()
2458 // recognize but skip over here.
2459 continue;
2460 break;
2461 case llvm::Triple::mips:
2462 case llvm::Triple::mipsel:
2463 case llvm::Triple::mips64:
2464 case llvm::Triple::mips64el:
2465 if (Value == "--trap") {
2466 CmdArgs.push_back("-target-feature");
2467 CmdArgs.push_back("+use-tcc-in-div");
2468 continue;
2469 }
2470 if (Value == "--break") {
2471 CmdArgs.push_back("-target-feature");
2472 CmdArgs.push_back("-use-tcc-in-div");
2473 continue;
2474 }
2475 if (Value.startswith("-msoft-float")) {
2476 CmdArgs.push_back("-target-feature");
2477 CmdArgs.push_back("+soft-float");
2478 continue;
2479 }
2480 if (Value.startswith("-mhard-float")) {
2481 CmdArgs.push_back("-target-feature");
2482 CmdArgs.push_back("-soft-float");
2483 continue;
2484 }
2485
2486 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2487 .Case("-mips1", "+mips1")
2488 .Case("-mips2", "+mips2")
2489 .Case("-mips3", "+mips3")
2490 .Case("-mips4", "+mips4")
2491 .Case("-mips5", "+mips5")
2492 .Case("-mips32", "+mips32")
2493 .Case("-mips32r2", "+mips32r2")
2494 .Case("-mips32r3", "+mips32r3")
2495 .Case("-mips32r5", "+mips32r5")
2496 .Case("-mips32r6", "+mips32r6")
2497 .Case("-mips64", "+mips64")
2498 .Case("-mips64r2", "+mips64r2")
2499 .Case("-mips64r3", "+mips64r3")
2500 .Case("-mips64r5", "+mips64r5")
2501 .Case("-mips64r6", "+mips64r6")
2502 .Default(nullptr);
2503 if (MipsTargetFeature)
2504 continue;
2505 }
2506
2507 if (Value == "-force_cpusubtype_ALL") {
2508 // Do nothing, this is the default and we don't support anything else.
2509 } else if (Value == "-L") {
2510 CmdArgs.push_back("-msave-temp-labels");
2511 } else if (Value == "--fatal-warnings") {
2512 CmdArgs.push_back("-massembler-fatal-warnings");
2513 } else if (Value == "--no-warn" || Value == "-W") {
2514 CmdArgs.push_back("-massembler-no-warn");
2515 } else if (Value == "--noexecstack") {
2516 UseNoExecStack = true;
2517 } else if (Value.startswith("-compress-debug-sections") ||
2518 Value.startswith("--compress-debug-sections") ||
2519 Value == "-nocompress-debug-sections" ||
2520 Value == "--nocompress-debug-sections") {
2521 CmdArgs.push_back(Value.data());
2522 } else if (Value == "-mrelax-relocations=yes" ||
2523 Value == "--mrelax-relocations=yes") {
2524 UseRelaxRelocations = true;
2525 } else if (Value == "-mrelax-relocations=no" ||
2526 Value == "--mrelax-relocations=no") {
2527 UseRelaxRelocations = false;
2528 } else if (Value.startswith("-I")) {
2529 CmdArgs.push_back(Value.data());
2530 // We need to consume the next argument if the current arg is a plain
2531 // -I. The next arg will be the include directory.
2532 if (Value == "-I")
2533 TakeNextArg = true;
2534 } else if (Value.startswith("-gdwarf-")) {
2535 // "-gdwarf-N" options are not cc1as options.
2536 unsigned DwarfVersion = DwarfVersionNum(Value);
2537 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2538 CmdArgs.push_back(Value.data());
2539 } else {
2540 RenderDebugEnablingArgs(Args, CmdArgs,
2541 codegenoptions::LimitedDebugInfo,
2542 DwarfVersion, llvm::DebuggerKind::Default);
2543 }
2544 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2545 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2546 // Do nothing, we'll validate it later.
2547 } else if (Value == "-defsym") {
2548 if (A->getNumValues() != 2) {
2549 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2550 break;
2551 }
2552 const char *S = A->getValue(1);
2553 auto Pair = StringRef(S).split('=');
2554 auto Sym = Pair.first;
2555 auto SVal = Pair.second;
2556
2557 if (Sym.empty() || SVal.empty()) {
2558 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2559 break;
2560 }
2561 int64_t IVal;
2562 if (SVal.getAsInteger(0, IVal)) {
2563 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2564 break;
2565 }
2566 CmdArgs.push_back(Value.data());
2567 TakeNextArg = true;
2568 } else if (Value == "-fdebug-compilation-dir") {
2569 CmdArgs.push_back("-fdebug-compilation-dir");
2570 TakeNextArg = true;
2571 } else if (Value.consume_front("-fdebug-compilation-dir=")) {
2572 // The flag is a -Wa / -Xassembler argument and Options doesn't
2573 // parse the argument, so this isn't automatically aliased to
2574 // -fdebug-compilation-dir (without '=') here.
2575 CmdArgs.push_back("-fdebug-compilation-dir");
2576 CmdArgs.push_back(Value.data());
2577 } else if (Value == "--version") {
2578 D.PrintVersion(C, llvm::outs());
2579 } else {
2580 D.Diag(diag::err_drv_unsupported_option_argument)
2581 << A->getOption().getName() << Value;
2582 }
2583 }
2584 }
2585 if (ImplicitIt.size())
2586 AddARMImplicitITArgs(Args, CmdArgs, ImplicitIt);
2587 if (UseRelaxRelocations)
2588 CmdArgs.push_back("--mrelax-relocations");
2589 if (UseNoExecStack)
2590 CmdArgs.push_back("-mnoexecstack");
2591 if (MipsTargetFeature != nullptr) {
2592 CmdArgs.push_back("-target-feature");
2593 CmdArgs.push_back(MipsTargetFeature);
2594 }
2595
2596 // forward -fembed-bitcode to assmebler
2597 if (C.getDriver().embedBitcodeEnabled() ||
2598 C.getDriver().embedBitcodeMarkerOnly())
2599 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2600 }
2601
RenderFloatingPointOptions(const ToolChain & TC,const Driver & D,bool OFastEnabled,const ArgList & Args,ArgStringList & CmdArgs,const JobAction & JA)2602 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2603 bool OFastEnabled, const ArgList &Args,
2604 ArgStringList &CmdArgs,
2605 const JobAction &JA) {
2606 // Handle various floating point optimization flags, mapping them to the
2607 // appropriate LLVM code generation flags. This is complicated by several
2608 // "umbrella" flags, so we do this by stepping through the flags incrementally
2609 // adjusting what we think is enabled/disabled, then at the end setting the
2610 // LLVM flags based on the final state.
2611 bool HonorINFs = true;
2612 bool HonorNaNs = true;
2613 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2614 bool MathErrno = TC.IsMathErrnoDefault();
2615 bool AssociativeMath = false;
2616 bool ReciprocalMath = false;
2617 bool SignedZeros = true;
2618 bool TrappingMath = false; // Implemented via -ffp-exception-behavior
2619 bool TrappingMathPresent = false; // Is trapping-math in args, and not
2620 // overriden by ffp-exception-behavior?
2621 bool RoundingFPMath = false;
2622 bool RoundingMathPresent = false; // Is rounding-math in args?
2623 // -ffp-model values: strict, fast, precise
2624 StringRef FPModel = "";
2625 // -ffp-exception-behavior options: strict, maytrap, ignore
2626 StringRef FPExceptionBehavior = "";
2627 const llvm::DenormalMode DefaultDenormalFPMath =
2628 TC.getDefaultDenormalModeForType(Args, JA);
2629 const llvm::DenormalMode DefaultDenormalFP32Math =
2630 TC.getDefaultDenormalModeForType(Args, JA, &llvm::APFloat::IEEEsingle());
2631
2632 llvm::DenormalMode DenormalFPMath = DefaultDenormalFPMath;
2633 llvm::DenormalMode DenormalFP32Math = DefaultDenormalFP32Math;
2634 StringRef FPContract = "";
2635 bool StrictFPModel = false;
2636
2637
2638 if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2639 CmdArgs.push_back("-mlimit-float-precision");
2640 CmdArgs.push_back(A->getValue());
2641 }
2642
2643 for (const Arg *A : Args) {
2644 auto optID = A->getOption().getID();
2645 bool PreciseFPModel = false;
2646 switch (optID) {
2647 default:
2648 break;
2649 case options::OPT_ffp_model_EQ: {
2650 // If -ffp-model= is seen, reset to fno-fast-math
2651 HonorINFs = true;
2652 HonorNaNs = true;
2653 // Turning *off* -ffast-math restores the toolchain default.
2654 MathErrno = TC.IsMathErrnoDefault();
2655 AssociativeMath = false;
2656 ReciprocalMath = false;
2657 SignedZeros = true;
2658 // -fno_fast_math restores default denormal and fpcontract handling
2659 FPContract = "";
2660 DenormalFPMath = llvm::DenormalMode::getIEEE();
2661
2662 // FIXME: The target may have picked a non-IEEE default mode here based on
2663 // -cl-denorms-are-zero. Should the target consider -fp-model interaction?
2664 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2665
2666 StringRef Val = A->getValue();
2667 if (OFastEnabled && !Val.equals("fast")) {
2668 // Only -ffp-model=fast is compatible with OFast, ignore.
2669 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2670 << Args.MakeArgString("-ffp-model=" + Val)
2671 << "-Ofast";
2672 break;
2673 }
2674 StrictFPModel = false;
2675 PreciseFPModel = true;
2676 // ffp-model= is a Driver option, it is entirely rewritten into more
2677 // granular options before being passed into cc1.
2678 // Use the gcc option in the switch below.
2679 if (!FPModel.empty() && !FPModel.equals(Val)) {
2680 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2681 << Args.MakeArgString("-ffp-model=" + FPModel)
2682 << Args.MakeArgString("-ffp-model=" + Val);
2683 FPContract = "";
2684 }
2685 if (Val.equals("fast")) {
2686 optID = options::OPT_ffast_math;
2687 FPModel = Val;
2688 FPContract = "fast";
2689 } else if (Val.equals("precise")) {
2690 optID = options::OPT_ffp_contract;
2691 FPModel = Val;
2692 FPContract = "fast";
2693 PreciseFPModel = true;
2694 } else if (Val.equals("strict")) {
2695 StrictFPModel = true;
2696 optID = options::OPT_frounding_math;
2697 FPExceptionBehavior = "strict";
2698 FPModel = Val;
2699 FPContract = "off";
2700 TrappingMath = true;
2701 } else
2702 D.Diag(diag::err_drv_unsupported_option_argument)
2703 << A->getOption().getName() << Val;
2704 break;
2705 }
2706 }
2707
2708 switch (optID) {
2709 // If this isn't an FP option skip the claim below
2710 default: continue;
2711
2712 // Options controlling individual features
2713 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2714 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2715 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2716 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2717 case options::OPT_fmath_errno: MathErrno = true; break;
2718 case options::OPT_fno_math_errno: MathErrno = false; break;
2719 case options::OPT_fassociative_math: AssociativeMath = true; break;
2720 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2721 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2722 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2723 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2724 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2725 case options::OPT_ftrapping_math:
2726 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2727 !FPExceptionBehavior.equals("strict"))
2728 // Warn that previous value of option is overridden.
2729 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2730 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2731 << "-ftrapping-math";
2732 TrappingMath = true;
2733 TrappingMathPresent = true;
2734 FPExceptionBehavior = "strict";
2735 break;
2736 case options::OPT_fno_trapping_math:
2737 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2738 !FPExceptionBehavior.equals("ignore"))
2739 // Warn that previous value of option is overridden.
2740 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2741 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2742 << "-fno-trapping-math";
2743 TrappingMath = false;
2744 TrappingMathPresent = true;
2745 FPExceptionBehavior = "ignore";
2746 break;
2747
2748 case options::OPT_frounding_math:
2749 RoundingFPMath = true;
2750 RoundingMathPresent = true;
2751 break;
2752
2753 case options::OPT_fno_rounding_math:
2754 RoundingFPMath = false;
2755 RoundingMathPresent = false;
2756 break;
2757
2758 case options::OPT_fdenormal_fp_math_EQ:
2759 DenormalFPMath = llvm::parseDenormalFPAttribute(A->getValue());
2760 if (!DenormalFPMath.isValid()) {
2761 D.Diag(diag::err_drv_invalid_value)
2762 << A->getAsString(Args) << A->getValue();
2763 }
2764 break;
2765
2766 case options::OPT_fdenormal_fp_math_f32_EQ:
2767 DenormalFP32Math = llvm::parseDenormalFPAttribute(A->getValue());
2768 if (!DenormalFP32Math.isValid()) {
2769 D.Diag(diag::err_drv_invalid_value)
2770 << A->getAsString(Args) << A->getValue();
2771 }
2772 break;
2773
2774 // Validate and pass through -ffp-contract option.
2775 case options::OPT_ffp_contract: {
2776 StringRef Val = A->getValue();
2777 if (PreciseFPModel) {
2778 // -ffp-model=precise enables ffp-contract=fast as a side effect
2779 // the FPContract value has already been set to a string literal
2780 // and the Val string isn't a pertinent value.
2781 ;
2782 } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off"))
2783 FPContract = Val;
2784 else
2785 D.Diag(diag::err_drv_unsupported_option_argument)
2786 << A->getOption().getName() << Val;
2787 break;
2788 }
2789
2790 // Validate and pass through -ffp-model option.
2791 case options::OPT_ffp_model_EQ:
2792 // This should only occur in the error case
2793 // since the optID has been replaced by a more granular
2794 // floating point option.
2795 break;
2796
2797 // Validate and pass through -ffp-exception-behavior option.
2798 case options::OPT_ffp_exception_behavior_EQ: {
2799 StringRef Val = A->getValue();
2800 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2801 !FPExceptionBehavior.equals(Val))
2802 // Warn that previous value of option is overridden.
2803 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2804 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2805 << Args.MakeArgString("-ffp-exception-behavior=" + Val);
2806 TrappingMath = TrappingMathPresent = false;
2807 if (Val.equals("ignore") || Val.equals("maytrap"))
2808 FPExceptionBehavior = Val;
2809 else if (Val.equals("strict")) {
2810 FPExceptionBehavior = Val;
2811 TrappingMath = TrappingMathPresent = true;
2812 } else
2813 D.Diag(diag::err_drv_unsupported_option_argument)
2814 << A->getOption().getName() << Val;
2815 break;
2816 }
2817
2818 case options::OPT_ffinite_math_only:
2819 HonorINFs = false;
2820 HonorNaNs = false;
2821 break;
2822 case options::OPT_fno_finite_math_only:
2823 HonorINFs = true;
2824 HonorNaNs = true;
2825 break;
2826
2827 case options::OPT_funsafe_math_optimizations:
2828 AssociativeMath = true;
2829 ReciprocalMath = true;
2830 SignedZeros = false;
2831 TrappingMath = false;
2832 FPExceptionBehavior = "";
2833 break;
2834 case options::OPT_fno_unsafe_math_optimizations:
2835 AssociativeMath = false;
2836 ReciprocalMath = false;
2837 SignedZeros = true;
2838 TrappingMath = true;
2839 FPExceptionBehavior = "strict";
2840
2841 // The target may have opted to flush by default, so force IEEE.
2842 DenormalFPMath = llvm::DenormalMode::getIEEE();
2843 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2844 break;
2845
2846 case options::OPT_Ofast:
2847 // If -Ofast is the optimization level, then -ffast-math should be enabled
2848 if (!OFastEnabled)
2849 continue;
2850 LLVM_FALLTHROUGH;
2851 case options::OPT_ffast_math:
2852 HonorINFs = false;
2853 HonorNaNs = false;
2854 MathErrno = false;
2855 AssociativeMath = true;
2856 ReciprocalMath = true;
2857 SignedZeros = false;
2858 TrappingMath = false;
2859 RoundingFPMath = false;
2860 // If fast-math is set then set the fp-contract mode to fast.
2861 FPContract = "fast";
2862 break;
2863 case options::OPT_fno_fast_math:
2864 HonorINFs = true;
2865 HonorNaNs = true;
2866 // Turning on -ffast-math (with either flag) removes the need for
2867 // MathErrno. However, turning *off* -ffast-math merely restores the
2868 // toolchain default (which may be false).
2869 MathErrno = TC.IsMathErrnoDefault();
2870 AssociativeMath = false;
2871 ReciprocalMath = false;
2872 SignedZeros = true;
2873 TrappingMath = false;
2874 RoundingFPMath = false;
2875 // -fno_fast_math restores default denormal and fpcontract handling
2876 DenormalFPMath = DefaultDenormalFPMath;
2877 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2878 FPContract = "";
2879 break;
2880 }
2881 if (StrictFPModel) {
2882 // If -ffp-model=strict has been specified on command line but
2883 // subsequent options conflict then emit warning diagnostic.
2884 if (HonorINFs && HonorNaNs &&
2885 !AssociativeMath && !ReciprocalMath &&
2886 SignedZeros && TrappingMath && RoundingFPMath &&
2887 (FPContract.equals("off") || FPContract.empty()) &&
2888 DenormalFPMath == llvm::DenormalMode::getIEEE() &&
2889 DenormalFP32Math == llvm::DenormalMode::getIEEE())
2890 // OK: Current Arg doesn't conflict with -ffp-model=strict
2891 ;
2892 else {
2893 StrictFPModel = false;
2894 FPModel = "";
2895 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2896 << "-ffp-model=strict" <<
2897 ((A->getNumValues() == 0) ? A->getSpelling()
2898 : Args.MakeArgString(A->getSpelling() + A->getValue()));
2899 }
2900 }
2901
2902 // If we handled this option claim it
2903 A->claim();
2904 }
2905
2906 if (!HonorINFs)
2907 CmdArgs.push_back("-menable-no-infs");
2908
2909 if (!HonorNaNs)
2910 CmdArgs.push_back("-menable-no-nans");
2911
2912 if (MathErrno)
2913 CmdArgs.push_back("-fmath-errno");
2914
2915 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2916 !TrappingMath)
2917 CmdArgs.push_back("-menable-unsafe-fp-math");
2918
2919 if (!SignedZeros)
2920 CmdArgs.push_back("-fno-signed-zeros");
2921
2922 if (AssociativeMath && !SignedZeros && !TrappingMath)
2923 CmdArgs.push_back("-mreassociate");
2924
2925 if (ReciprocalMath)
2926 CmdArgs.push_back("-freciprocal-math");
2927
2928 if (TrappingMath) {
2929 // FP Exception Behavior is also set to strict
2930 assert(FPExceptionBehavior.equals("strict"));
2931 }
2932
2933 // The default is IEEE.
2934 if (DenormalFPMath != llvm::DenormalMode::getIEEE()) {
2935 llvm::SmallString<64> DenormFlag;
2936 llvm::raw_svector_ostream ArgStr(DenormFlag);
2937 ArgStr << "-fdenormal-fp-math=" << DenormalFPMath;
2938 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));
2939 }
2940
2941 // Add f32 specific denormal mode flag if it's different.
2942 if (DenormalFP32Math != DenormalFPMath) {
2943 llvm::SmallString<64> DenormFlag;
2944 llvm::raw_svector_ostream ArgStr(DenormFlag);
2945 ArgStr << "-fdenormal-fp-math-f32=" << DenormalFP32Math;
2946 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));
2947 }
2948
2949 if (!FPContract.empty())
2950 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2951
2952 if (!RoundingFPMath)
2953 CmdArgs.push_back(Args.MakeArgString("-fno-rounding-math"));
2954
2955 if (RoundingFPMath && RoundingMathPresent)
2956 CmdArgs.push_back(Args.MakeArgString("-frounding-math"));
2957
2958 if (!FPExceptionBehavior.empty())
2959 CmdArgs.push_back(Args.MakeArgString("-ffp-exception-behavior=" +
2960 FPExceptionBehavior));
2961
2962 ParseMRecip(D, Args, CmdArgs);
2963
2964 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2965 // individual features enabled by -ffast-math instead of the option itself as
2966 // that's consistent with gcc's behaviour.
2967 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2968 ReciprocalMath && !SignedZeros && !TrappingMath && !RoundingFPMath) {
2969 CmdArgs.push_back("-ffast-math");
2970 if (FPModel.equals("fast")) {
2971 if (FPContract.equals("fast"))
2972 // All set, do nothing.
2973 ;
2974 else if (FPContract.empty())
2975 // Enable -ffp-contract=fast
2976 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=fast"));
2977 else
2978 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2979 << "-ffp-model=fast"
2980 << Args.MakeArgString("-ffp-contract=" + FPContract);
2981 }
2982 }
2983
2984 // Handle __FINITE_MATH_ONLY__ similarly.
2985 if (!HonorINFs && !HonorNaNs)
2986 CmdArgs.push_back("-ffinite-math-only");
2987
2988 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2989 CmdArgs.push_back("-mfpmath");
2990 CmdArgs.push_back(A->getValue());
2991 }
2992
2993 // Disable a codegen optimization for floating-point casts.
2994 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2995 options::OPT_fstrict_float_cast_overflow, false))
2996 CmdArgs.push_back("-fno-strict-float-cast-overflow");
2997 }
2998
RenderAnalyzerOptions(const ArgList & Args,ArgStringList & CmdArgs,const llvm::Triple & Triple,const InputInfo & Input)2999 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
3000 const llvm::Triple &Triple,
3001 const InputInfo &Input) {
3002 // Enable region store model by default.
3003 CmdArgs.push_back("-analyzer-store=region");
3004
3005 // Treat blocks as analysis entry points.
3006 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
3007
3008 // Add default argument set.
3009 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
3010 CmdArgs.push_back("-analyzer-checker=core");
3011 CmdArgs.push_back("-analyzer-checker=apiModeling");
3012
3013 if (!Triple.isWindowsMSVCEnvironment()) {
3014 CmdArgs.push_back("-analyzer-checker=unix");
3015 } else {
3016 // Enable "unix" checkers that also work on Windows.
3017 CmdArgs.push_back("-analyzer-checker=unix.API");
3018 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
3019 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
3020 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
3021 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
3022 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
3023 }
3024
3025 // Disable some unix checkers for PS4.
3026 if (Triple.isPS4CPU()) {
3027 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
3028 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
3029 }
3030
3031 if (Triple.isOSDarwin()) {
3032 CmdArgs.push_back("-analyzer-checker=osx");
3033 CmdArgs.push_back(
3034 "-analyzer-checker=security.insecureAPI.decodeValueOfObjCType");
3035 }
3036 else if (Triple.isOSFuchsia())
3037 CmdArgs.push_back("-analyzer-checker=fuchsia");
3038
3039 CmdArgs.push_back("-analyzer-checker=deadcode");
3040
3041 if (types::isCXX(Input.getType()))
3042 CmdArgs.push_back("-analyzer-checker=cplusplus");
3043
3044 if (!Triple.isPS4CPU()) {
3045 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
3046 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
3047 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
3048 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
3049 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
3050 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
3051 }
3052
3053 // Default nullability checks.
3054 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
3055 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
3056 }
3057
3058 // Set the output format. The default is plist, for (lame) historical reasons.
3059 CmdArgs.push_back("-analyzer-output");
3060 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
3061 CmdArgs.push_back(A->getValue());
3062 else
3063 CmdArgs.push_back("plist");
3064
3065 // Disable the presentation of standard compiler warnings when using
3066 // --analyze. We only want to show static analyzer diagnostics or frontend
3067 // errors.
3068 CmdArgs.push_back("-w");
3069
3070 // Add -Xanalyzer arguments when running as analyzer.
3071 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
3072 }
3073
RenderSSPOptions(const Driver & D,const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs,bool KernelOrKext)3074 static void RenderSSPOptions(const Driver &D, const ToolChain &TC,
3075 const ArgList &Args, ArgStringList &CmdArgs,
3076 bool KernelOrKext) {
3077 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
3078
3079 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
3080 // doesn't even have a stack!
3081 if (EffectiveTriple.isNVPTX())
3082 return;
3083
3084 // -stack-protector=0 is default.
3085 LangOptions::StackProtectorMode StackProtectorLevel = LangOptions::SSPOff;
3086 LangOptions::StackProtectorMode DefaultStackProtectorLevel =
3087 TC.GetDefaultStackProtectorLevel(KernelOrKext);
3088
3089 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
3090 options::OPT_fstack_protector_all,
3091 options::OPT_fstack_protector_strong,
3092 options::OPT_fstack_protector)) {
3093 if (A->getOption().matches(options::OPT_fstack_protector))
3094 StackProtectorLevel =
3095 std::max<>(LangOptions::SSPOn, DefaultStackProtectorLevel);
3096 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
3097 StackProtectorLevel = LangOptions::SSPStrong;
3098 else if (A->getOption().matches(options::OPT_fstack_protector_all))
3099 StackProtectorLevel = LangOptions::SSPReq;
3100 } else {
3101 StackProtectorLevel = DefaultStackProtectorLevel;
3102 }
3103
3104 if (StackProtectorLevel) {
3105 CmdArgs.push_back("-stack-protector");
3106 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
3107 }
3108
3109 // --param ssp-buffer-size=
3110 for (const Arg *A : Args.filtered(options::OPT__param)) {
3111 StringRef Str(A->getValue());
3112 if (Str.startswith("ssp-buffer-size=")) {
3113 if (StackProtectorLevel) {
3114 CmdArgs.push_back("-stack-protector-buffer-size");
3115 // FIXME: Verify the argument is a valid integer.
3116 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
3117 }
3118 A->claim();
3119 }
3120 }
3121
3122 const std::string &TripleStr = EffectiveTriple.getTriple();
3123 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_EQ)) {
3124 StringRef Value = A->getValue();
3125 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64())
3126 D.Diag(diag::err_drv_unsupported_opt_for_target)
3127 << A->getAsString(Args) << TripleStr;
3128 if (EffectiveTriple.isX86() && Value != "tls" && Value != "global") {
3129 D.Diag(diag::err_drv_invalid_value_with_suggestion)
3130 << A->getOption().getName() << Value << "tls global";
3131 return;
3132 }
3133 if (EffectiveTriple.isAArch64() && Value != "sysreg" && Value != "global") {
3134 D.Diag(diag::err_drv_invalid_value_with_suggestion)
3135 << A->getOption().getName() << Value << "sysreg global";
3136 return;
3137 }
3138 A->render(Args, CmdArgs);
3139 }
3140
3141 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_offset_EQ)) {
3142 StringRef Value = A->getValue();
3143 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64())
3144 D.Diag(diag::err_drv_unsupported_opt_for_target)
3145 << A->getAsString(Args) << TripleStr;
3146 int Offset;
3147 if (Value.getAsInteger(10, Offset)) {
3148 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
3149 return;
3150 }
3151 A->render(Args, CmdArgs);
3152 }
3153
3154 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_reg_EQ)) {
3155 StringRef Value = A->getValue();
3156 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64())
3157 D.Diag(diag::err_drv_unsupported_opt_for_target)
3158 << A->getAsString(Args) << TripleStr;
3159 if (EffectiveTriple.isX86() && (Value != "fs" && Value != "gs")) {
3160 D.Diag(diag::err_drv_invalid_value_with_suggestion)
3161 << A->getOption().getName() << Value << "fs gs";
3162 return;
3163 }
3164 if (EffectiveTriple.isAArch64() && Value != "sp_el0") {
3165 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
3166 return;
3167 }
3168 A->render(Args, CmdArgs);
3169 }
3170 }
3171
RenderSCPOptions(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)3172 static void RenderSCPOptions(const ToolChain &TC, const ArgList &Args,
3173 ArgStringList &CmdArgs) {
3174 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
3175
3176 if (!EffectiveTriple.isOSLinux())
3177 return;
3178
3179 if (!EffectiveTriple.isX86() && !EffectiveTriple.isSystemZ() &&
3180 !EffectiveTriple.isPPC64())
3181 return;
3182
3183 if (Args.hasFlag(options::OPT_fstack_clash_protection,
3184 options::OPT_fno_stack_clash_protection, false))
3185 CmdArgs.push_back("-fstack-clash-protection");
3186 }
3187
RenderTrivialAutoVarInitOptions(const Driver & D,const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)3188 static void RenderTrivialAutoVarInitOptions(const Driver &D,
3189 const ToolChain &TC,
3190 const ArgList &Args,
3191 ArgStringList &CmdArgs) {
3192 auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
3193 StringRef TrivialAutoVarInit = "";
3194
3195 for (const Arg *A : Args) {
3196 switch (A->getOption().getID()) {
3197 default:
3198 continue;
3199 case options::OPT_ftrivial_auto_var_init: {
3200 A->claim();
3201 StringRef Val = A->getValue();
3202 if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
3203 TrivialAutoVarInit = Val;
3204 else
3205 D.Diag(diag::err_drv_unsupported_option_argument)
3206 << A->getOption().getName() << Val;
3207 break;
3208 }
3209 }
3210 }
3211
3212 if (TrivialAutoVarInit.empty())
3213 switch (DefaultTrivialAutoVarInit) {
3214 case LangOptions::TrivialAutoVarInitKind::Uninitialized:
3215 break;
3216 case LangOptions::TrivialAutoVarInitKind::Pattern:
3217 TrivialAutoVarInit = "pattern";
3218 break;
3219 case LangOptions::TrivialAutoVarInitKind::Zero:
3220 TrivialAutoVarInit = "zero";
3221 break;
3222 }
3223
3224 if (!TrivialAutoVarInit.empty()) {
3225 if (TrivialAutoVarInit == "zero" && !Args.hasArg(options::OPT_enable_trivial_var_init_zero))
3226 D.Diag(diag::err_drv_trivial_auto_var_init_zero_disabled);
3227 CmdArgs.push_back(
3228 Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
3229 }
3230
3231 if (Arg *A =
3232 Args.getLastArg(options::OPT_ftrivial_auto_var_init_stop_after)) {
3233 if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||
3234 StringRef(
3235 Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==
3236 "uninitialized")
3237 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_missing_dependency);
3238 A->claim();
3239 StringRef Val = A->getValue();
3240 if (std::stoi(Val.str()) <= 0)
3241 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_invalid_value);
3242 CmdArgs.push_back(
3243 Args.MakeArgString("-ftrivial-auto-var-init-stop-after=" + Val));
3244 }
3245 }
3246
RenderOpenCLOptions(const ArgList & Args,ArgStringList & CmdArgs,types::ID InputType)3247 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs,
3248 types::ID InputType) {
3249 // cl-denorms-are-zero is not forwarded. It is translated into a generic flag
3250 // for denormal flushing handling based on the target.
3251 const unsigned ForwardedArguments[] = {
3252 options::OPT_cl_opt_disable,
3253 options::OPT_cl_strict_aliasing,
3254 options::OPT_cl_single_precision_constant,
3255 options::OPT_cl_finite_math_only,
3256 options::OPT_cl_kernel_arg_info,
3257 options::OPT_cl_unsafe_math_optimizations,
3258 options::OPT_cl_fast_relaxed_math,
3259 options::OPT_cl_mad_enable,
3260 options::OPT_cl_no_signed_zeros,
3261 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
3262 options::OPT_cl_uniform_work_group_size
3263 };
3264
3265 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
3266 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
3267 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
3268 }
3269
3270 for (const auto &Arg : ForwardedArguments)
3271 if (const auto *A = Args.getLastArg(Arg))
3272 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
3273
3274 // Only add the default headers if we are compiling OpenCL sources.
3275 if ((types::isOpenCL(InputType) || Args.hasArg(options::OPT_cl_std_EQ)) &&
3276 !Args.hasArg(options::OPT_cl_no_stdinc)) {
3277 CmdArgs.push_back("-finclude-default-header");
3278 CmdArgs.push_back("-fdeclare-opencl-builtins");
3279 }
3280 }
3281
RenderARCMigrateToolOptions(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)3282 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
3283 ArgStringList &CmdArgs) {
3284 bool ARCMTEnabled = false;
3285 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
3286 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
3287 options::OPT_ccc_arcmt_modify,
3288 options::OPT_ccc_arcmt_migrate)) {
3289 ARCMTEnabled = true;
3290 switch (A->getOption().getID()) {
3291 default: llvm_unreachable("missed a case");
3292 case options::OPT_ccc_arcmt_check:
3293 CmdArgs.push_back("-arcmt-action=check");
3294 break;
3295 case options::OPT_ccc_arcmt_modify:
3296 CmdArgs.push_back("-arcmt-action=modify");
3297 break;
3298 case options::OPT_ccc_arcmt_migrate:
3299 CmdArgs.push_back("-arcmt-action=migrate");
3300 CmdArgs.push_back("-mt-migrate-directory");
3301 CmdArgs.push_back(A->getValue());
3302
3303 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
3304 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
3305 break;
3306 }
3307 }
3308 } else {
3309 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
3310 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
3311 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
3312 }
3313
3314 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
3315 if (ARCMTEnabled)
3316 D.Diag(diag::err_drv_argument_not_allowed_with)
3317 << A->getAsString(Args) << "-ccc-arcmt-migrate";
3318
3319 CmdArgs.push_back("-mt-migrate-directory");
3320 CmdArgs.push_back(A->getValue());
3321
3322 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
3323 options::OPT_objcmt_migrate_subscripting,
3324 options::OPT_objcmt_migrate_property)) {
3325 // None specified, means enable them all.
3326 CmdArgs.push_back("-objcmt-migrate-literals");
3327 CmdArgs.push_back("-objcmt-migrate-subscripting");
3328 CmdArgs.push_back("-objcmt-migrate-property");
3329 } else {
3330 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
3331 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
3332 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
3333 }
3334 } else {
3335 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
3336 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
3337 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
3338 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
3339 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
3340 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
3341 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
3342 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
3343 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
3344 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
3345 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
3346 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
3347 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
3348 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
3349 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
3350 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
3351 }
3352 }
3353
RenderBuiltinOptions(const ToolChain & TC,const llvm::Triple & T,const ArgList & Args,ArgStringList & CmdArgs)3354 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
3355 const ArgList &Args, ArgStringList &CmdArgs) {
3356 // -fbuiltin is default unless -mkernel is used.
3357 bool UseBuiltins =
3358 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
3359 !Args.hasArg(options::OPT_mkernel));
3360 if (!UseBuiltins)
3361 CmdArgs.push_back("-fno-builtin");
3362
3363 // -ffreestanding implies -fno-builtin.
3364 if (Args.hasArg(options::OPT_ffreestanding))
3365 UseBuiltins = false;
3366
3367 // Process the -fno-builtin-* options.
3368 for (const auto &Arg : Args) {
3369 const Option &O = Arg->getOption();
3370 if (!O.matches(options::OPT_fno_builtin_))
3371 continue;
3372
3373 Arg->claim();
3374
3375 // If -fno-builtin is specified, then there's no need to pass the option to
3376 // the frontend.
3377 if (!UseBuiltins)
3378 continue;
3379
3380 StringRef FuncName = Arg->getValue();
3381 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
3382 }
3383
3384 // le32-specific flags:
3385 // -fno-math-builtin: clang should not convert math builtins to intrinsics
3386 // by default.
3387 if (TC.getArch() == llvm::Triple::le32)
3388 CmdArgs.push_back("-fno-math-builtin");
3389 }
3390
getDefaultModuleCachePath(SmallVectorImpl<char> & Result)3391 bool Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
3392 if (llvm::sys::path::cache_directory(Result)) {
3393 llvm::sys::path::append(Result, "clang");
3394 llvm::sys::path::append(Result, "ModuleCache");
3395 return true;
3396 }
3397 return false;
3398 }
3399
RenderModulesOptions(Compilation & C,const Driver & D,const ArgList & Args,const InputInfo & Input,const InputInfo & Output,ArgStringList & CmdArgs,bool & HaveModules)3400 static void RenderModulesOptions(Compilation &C, const Driver &D,
3401 const ArgList &Args, const InputInfo &Input,
3402 const InputInfo &Output,
3403 ArgStringList &CmdArgs, bool &HaveModules) {
3404 // -fmodules enables the use of precompiled modules (off by default).
3405 // Users can pass -fno-cxx-modules to turn off modules support for
3406 // C++/Objective-C++ programs.
3407 bool HaveClangModules = false;
3408 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
3409 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
3410 options::OPT_fno_cxx_modules, true);
3411 if (AllowedInCXX || !types::isCXX(Input.getType())) {
3412 CmdArgs.push_back("-fmodules");
3413 HaveClangModules = true;
3414 }
3415 }
3416
3417 HaveModules |= HaveClangModules;
3418 if (Args.hasArg(options::OPT_fmodules_ts)) {
3419 CmdArgs.push_back("-fmodules-ts");
3420 HaveModules = true;
3421 }
3422
3423 // -fmodule-maps enables implicit reading of module map files. By default,
3424 // this is enabled if we are using Clang's flavor of precompiled modules.
3425 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
3426 options::OPT_fno_implicit_module_maps, HaveClangModules))
3427 CmdArgs.push_back("-fimplicit-module-maps");
3428
3429 // -fmodules-decluse checks that modules used are declared so (off by default)
3430 if (Args.hasFlag(options::OPT_fmodules_decluse,
3431 options::OPT_fno_modules_decluse, false))
3432 CmdArgs.push_back("-fmodules-decluse");
3433
3434 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
3435 // all #included headers are part of modules.
3436 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
3437 options::OPT_fno_modules_strict_decluse, false))
3438 CmdArgs.push_back("-fmodules-strict-decluse");
3439
3440 // -fno-implicit-modules turns off implicitly compiling modules on demand.
3441 bool ImplicitModules = false;
3442 if (!Args.hasFlag(options::OPT_fimplicit_modules,
3443 options::OPT_fno_implicit_modules, HaveClangModules)) {
3444 if (HaveModules)
3445 CmdArgs.push_back("-fno-implicit-modules");
3446 } else if (HaveModules) {
3447 ImplicitModules = true;
3448 // -fmodule-cache-path specifies where our implicitly-built module files
3449 // should be written.
3450 SmallString<128> Path;
3451 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
3452 Path = A->getValue();
3453
3454 bool HasPath = true;
3455 if (C.isForDiagnostics()) {
3456 // When generating crash reports, we want to emit the modules along with
3457 // the reproduction sources, so we ignore any provided module path.
3458 Path = Output.getFilename();
3459 llvm::sys::path::replace_extension(Path, ".cache");
3460 llvm::sys::path::append(Path, "modules");
3461 } else if (Path.empty()) {
3462 // No module path was provided: use the default.
3463 HasPath = Driver::getDefaultModuleCachePath(Path);
3464 }
3465
3466 // `HasPath` will only be false if getDefaultModuleCachePath() fails.
3467 // That being said, that failure is unlikely and not caching is harmless.
3468 if (HasPath) {
3469 const char Arg[] = "-fmodules-cache-path=";
3470 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
3471 CmdArgs.push_back(Args.MakeArgString(Path));
3472 }
3473 }
3474
3475 if (HaveModules) {
3476 // -fprebuilt-module-path specifies where to load the prebuilt module files.
3477 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
3478 CmdArgs.push_back(Args.MakeArgString(
3479 std::string("-fprebuilt-module-path=") + A->getValue()));
3480 A->claim();
3481 }
3482 if (Args.hasFlag(options::OPT_fprebuilt_implicit_modules,
3483 options::OPT_fno_prebuilt_implicit_modules, false))
3484 CmdArgs.push_back("-fprebuilt-implicit-modules");
3485 if (Args.hasFlag(options::OPT_fmodules_validate_input_files_content,
3486 options::OPT_fno_modules_validate_input_files_content,
3487 false))
3488 CmdArgs.push_back("-fvalidate-ast-input-files-content");
3489 }
3490
3491 // -fmodule-name specifies the module that is currently being built (or
3492 // used for header checking by -fmodule-maps).
3493 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
3494
3495 // -fmodule-map-file can be used to specify files containing module
3496 // definitions.
3497 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
3498
3499 // -fbuiltin-module-map can be used to load the clang
3500 // builtin headers modulemap file.
3501 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
3502 SmallString<128> BuiltinModuleMap(D.ResourceDir);
3503 llvm::sys::path::append(BuiltinModuleMap, "include");
3504 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
3505 if (llvm::sys::fs::exists(BuiltinModuleMap))
3506 CmdArgs.push_back(
3507 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
3508 }
3509
3510 // The -fmodule-file=<name>=<file> form specifies the mapping of module
3511 // names to precompiled module files (the module is loaded only if used).
3512 // The -fmodule-file=<file> form can be used to unconditionally load
3513 // precompiled module files (whether used or not).
3514 if (HaveModules)
3515 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
3516 else
3517 Args.ClaimAllArgs(options::OPT_fmodule_file);
3518
3519 // When building modules and generating crashdumps, we need to dump a module
3520 // dependency VFS alongside the output.
3521 if (HaveClangModules && C.isForDiagnostics()) {
3522 SmallString<128> VFSDir(Output.getFilename());
3523 llvm::sys::path::replace_extension(VFSDir, ".cache");
3524 // Add the cache directory as a temp so the crash diagnostics pick it up.
3525 C.addTempFile(Args.MakeArgString(VFSDir));
3526
3527 llvm::sys::path::append(VFSDir, "vfs");
3528 CmdArgs.push_back("-module-dependency-dir");
3529 CmdArgs.push_back(Args.MakeArgString(VFSDir));
3530 }
3531
3532 if (HaveClangModules)
3533 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
3534
3535 // Pass through all -fmodules-ignore-macro arguments.
3536 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
3537 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
3538 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
3539
3540 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
3541
3542 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
3543 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
3544 D.Diag(diag::err_drv_argument_not_allowed_with)
3545 << A->getAsString(Args) << "-fbuild-session-timestamp";
3546
3547 llvm::sys::fs::file_status Status;
3548 if (llvm::sys::fs::status(A->getValue(), Status))
3549 D.Diag(diag::err_drv_no_such_file) << A->getValue();
3550 CmdArgs.push_back(
3551 Args.MakeArgString("-fbuild-session-timestamp=" +
3552 Twine((uint64_t)Status.getLastModificationTime()
3553 .time_since_epoch()
3554 .count())));
3555 }
3556
3557 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
3558 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
3559 options::OPT_fbuild_session_file))
3560 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
3561
3562 Args.AddLastArg(CmdArgs,
3563 options::OPT_fmodules_validate_once_per_build_session);
3564 }
3565
3566 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
3567 options::OPT_fno_modules_validate_system_headers,
3568 ImplicitModules))
3569 CmdArgs.push_back("-fmodules-validate-system-headers");
3570
3571 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
3572 }
3573
RenderCharacterOptions(const ArgList & Args,const llvm::Triple & T,ArgStringList & CmdArgs)3574 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
3575 ArgStringList &CmdArgs) {
3576 // -fsigned-char is default.
3577 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
3578 options::OPT_fno_signed_char,
3579 options::OPT_funsigned_char,
3580 options::OPT_fno_unsigned_char)) {
3581 if (A->getOption().matches(options::OPT_funsigned_char) ||
3582 A->getOption().matches(options::OPT_fno_signed_char)) {
3583 CmdArgs.push_back("-fno-signed-char");
3584 }
3585 } else if (!isSignedCharDefault(T)) {
3586 CmdArgs.push_back("-fno-signed-char");
3587 }
3588
3589 // The default depends on the language standard.
3590 Args.AddLastArg(CmdArgs, options::OPT_fchar8__t, options::OPT_fno_char8__t);
3591
3592 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
3593 options::OPT_fno_short_wchar)) {
3594 if (A->getOption().matches(options::OPT_fshort_wchar)) {
3595 CmdArgs.push_back("-fwchar-type=short");
3596 CmdArgs.push_back("-fno-signed-wchar");
3597 } else {
3598 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
3599 CmdArgs.push_back("-fwchar-type=int");
3600 if (T.isOSzOS() ||
3601 (IsARM && !(T.isOSWindows() || T.isOSNetBSD() || T.isOSOpenBSD())))
3602 CmdArgs.push_back("-fno-signed-wchar");
3603 else
3604 CmdArgs.push_back("-fsigned-wchar");
3605 }
3606 }
3607 }
3608
RenderObjCOptions(const ToolChain & TC,const Driver & D,const llvm::Triple & T,const ArgList & Args,ObjCRuntime & Runtime,bool InferCovariantReturns,const InputInfo & Input,ArgStringList & CmdArgs)3609 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
3610 const llvm::Triple &T, const ArgList &Args,
3611 ObjCRuntime &Runtime, bool InferCovariantReturns,
3612 const InputInfo &Input, ArgStringList &CmdArgs) {
3613 const llvm::Triple::ArchType Arch = TC.getArch();
3614
3615 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
3616 // is the default. Except for deployment target of 10.5, next runtime is
3617 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
3618 if (Runtime.isNonFragile()) {
3619 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
3620 options::OPT_fno_objc_legacy_dispatch,
3621 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
3622 if (TC.UseObjCMixedDispatch())
3623 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
3624 else
3625 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
3626 }
3627 }
3628
3629 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
3630 // to do Array/Dictionary subscripting by default.
3631 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
3632 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
3633 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
3634
3635 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
3636 // NOTE: This logic is duplicated in ToolChains.cpp.
3637 if (isObjCAutoRefCount(Args)) {
3638 TC.CheckObjCARC();
3639
3640 CmdArgs.push_back("-fobjc-arc");
3641
3642 // FIXME: It seems like this entire block, and several around it should be
3643 // wrapped in isObjC, but for now we just use it here as this is where it
3644 // was being used previously.
3645 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
3646 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
3647 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
3648 else
3649 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
3650 }
3651
3652 // Allow the user to enable full exceptions code emission.
3653 // We default off for Objective-C, on for Objective-C++.
3654 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
3655 options::OPT_fno_objc_arc_exceptions,
3656 /*Default=*/types::isCXX(Input.getType())))
3657 CmdArgs.push_back("-fobjc-arc-exceptions");
3658 }
3659
3660 // Silence warning for full exception code emission options when explicitly
3661 // set to use no ARC.
3662 if (Args.hasArg(options::OPT_fno_objc_arc)) {
3663 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
3664 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
3665 }
3666
3667 // Allow the user to control whether messages can be converted to runtime
3668 // functions.
3669 if (types::isObjC(Input.getType())) {
3670 auto *Arg = Args.getLastArg(
3671 options::OPT_fobjc_convert_messages_to_runtime_calls,
3672 options::OPT_fno_objc_convert_messages_to_runtime_calls);
3673 if (Arg &&
3674 Arg->getOption().matches(
3675 options::OPT_fno_objc_convert_messages_to_runtime_calls))
3676 CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
3677 }
3678
3679 // -fobjc-infer-related-result-type is the default, except in the Objective-C
3680 // rewriter.
3681 if (InferCovariantReturns)
3682 CmdArgs.push_back("-fno-objc-infer-related-result-type");
3683
3684 // Pass down -fobjc-weak or -fno-objc-weak if present.
3685 if (types::isObjC(Input.getType())) {
3686 auto WeakArg =
3687 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
3688 if (!WeakArg) {
3689 // nothing to do
3690 } else if (!Runtime.allowsWeak()) {
3691 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
3692 D.Diag(diag::err_objc_weak_unsupported);
3693 } else {
3694 WeakArg->render(Args, CmdArgs);
3695 }
3696 }
3697
3698 if (Args.hasArg(options::OPT_fobjc_disable_direct_methods_for_testing))
3699 CmdArgs.push_back("-fobjc-disable-direct-methods-for-testing");
3700 }
3701
RenderDiagnosticsOptions(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs)3702 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
3703 ArgStringList &CmdArgs) {
3704 bool CaretDefault = true;
3705 bool ColumnDefault = true;
3706
3707 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
3708 options::OPT__SLASH_diagnostics_column,
3709 options::OPT__SLASH_diagnostics_caret)) {
3710 switch (A->getOption().getID()) {
3711 case options::OPT__SLASH_diagnostics_caret:
3712 CaretDefault = true;
3713 ColumnDefault = true;
3714 break;
3715 case options::OPT__SLASH_diagnostics_column:
3716 CaretDefault = false;
3717 ColumnDefault = true;
3718 break;
3719 case options::OPT__SLASH_diagnostics_classic:
3720 CaretDefault = false;
3721 ColumnDefault = false;
3722 break;
3723 }
3724 }
3725
3726 // -fcaret-diagnostics is default.
3727 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
3728 options::OPT_fno_caret_diagnostics, CaretDefault))
3729 CmdArgs.push_back("-fno-caret-diagnostics");
3730
3731 // -fdiagnostics-fixit-info is default, only pass non-default.
3732 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
3733 options::OPT_fno_diagnostics_fixit_info))
3734 CmdArgs.push_back("-fno-diagnostics-fixit-info");
3735
3736 // Enable -fdiagnostics-show-option by default.
3737 if (!Args.hasFlag(options::OPT_fdiagnostics_show_option,
3738 options::OPT_fno_diagnostics_show_option, true))
3739 CmdArgs.push_back("-fno-diagnostics-show-option");
3740
3741 if (const Arg *A =
3742 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
3743 CmdArgs.push_back("-fdiagnostics-show-category");
3744 CmdArgs.push_back(A->getValue());
3745 }
3746
3747 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
3748 options::OPT_fno_diagnostics_show_hotness, false))
3749 CmdArgs.push_back("-fdiagnostics-show-hotness");
3750
3751 if (const Arg *A =
3752 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
3753 std::string Opt =
3754 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
3755 CmdArgs.push_back(Args.MakeArgString(Opt));
3756 }
3757
3758 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
3759 CmdArgs.push_back("-fdiagnostics-format");
3760 CmdArgs.push_back(A->getValue());
3761 }
3762
3763 if (const Arg *A = Args.getLastArg(
3764 options::OPT_fdiagnostics_show_note_include_stack,
3765 options::OPT_fno_diagnostics_show_note_include_stack)) {
3766 const Option &O = A->getOption();
3767 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
3768 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
3769 else
3770 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
3771 }
3772
3773 // Color diagnostics are parsed by the driver directly from argv and later
3774 // re-parsed to construct this job; claim any possible color diagnostic here
3775 // to avoid warn_drv_unused_argument and diagnose bad
3776 // OPT_fdiagnostics_color_EQ values.
3777 for (const Arg *A : Args) {
3778 const Option &O = A->getOption();
3779 if (!O.matches(options::OPT_fcolor_diagnostics) &&
3780 !O.matches(options::OPT_fdiagnostics_color) &&
3781 !O.matches(options::OPT_fno_color_diagnostics) &&
3782 !O.matches(options::OPT_fno_diagnostics_color) &&
3783 !O.matches(options::OPT_fdiagnostics_color_EQ))
3784 continue;
3785
3786 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
3787 StringRef Value(A->getValue());
3788 if (Value != "always" && Value != "never" && Value != "auto")
3789 D.Diag(diag::err_drv_clang_unsupported)
3790 << ("-fdiagnostics-color=" + Value).str();
3791 }
3792 A->claim();
3793 }
3794
3795 if (D.getDiags().getDiagnosticOptions().ShowColors)
3796 CmdArgs.push_back("-fcolor-diagnostics");
3797
3798 if (Args.hasArg(options::OPT_fansi_escape_codes))
3799 CmdArgs.push_back("-fansi-escape-codes");
3800
3801 if (!Args.hasFlag(options::OPT_fshow_source_location,
3802 options::OPT_fno_show_source_location))
3803 CmdArgs.push_back("-fno-show-source-location");
3804
3805 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
3806 CmdArgs.push_back("-fdiagnostics-absolute-paths");
3807
3808 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
3809 ColumnDefault))
3810 CmdArgs.push_back("-fno-show-column");
3811
3812 if (!Args.hasFlag(options::OPT_fspell_checking,
3813 options::OPT_fno_spell_checking))
3814 CmdArgs.push_back("-fno-spell-checking");
3815 }
3816
3817 enum class DwarfFissionKind { None, Split, Single };
3818
getDebugFissionKind(const Driver & D,const ArgList & Args,Arg * & Arg)3819 static DwarfFissionKind getDebugFissionKind(const Driver &D,
3820 const ArgList &Args, Arg *&Arg) {
3821 Arg = Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ,
3822 options::OPT_gno_split_dwarf);
3823 if (!Arg || Arg->getOption().matches(options::OPT_gno_split_dwarf))
3824 return DwarfFissionKind::None;
3825
3826 if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
3827 return DwarfFissionKind::Split;
3828
3829 StringRef Value = Arg->getValue();
3830 if (Value == "split")
3831 return DwarfFissionKind::Split;
3832 if (Value == "single")
3833 return DwarfFissionKind::Single;
3834
3835 D.Diag(diag::err_drv_unsupported_option_argument)
3836 << Arg->getOption().getName() << Arg->getValue();
3837 return DwarfFissionKind::None;
3838 }
3839
renderDwarfFormat(const Driver & D,const llvm::Triple & T,const ArgList & Args,ArgStringList & CmdArgs,unsigned DwarfVersion)3840 static void renderDwarfFormat(const Driver &D, const llvm::Triple &T,
3841 const ArgList &Args, ArgStringList &CmdArgs,
3842 unsigned DwarfVersion) {
3843 auto *DwarfFormatArg =
3844 Args.getLastArg(options::OPT_gdwarf64, options::OPT_gdwarf32);
3845 if (!DwarfFormatArg)
3846 return;
3847
3848 if (DwarfFormatArg->getOption().matches(options::OPT_gdwarf64)) {
3849 if (DwarfVersion < 3)
3850 D.Diag(diag::err_drv_argument_only_allowed_with)
3851 << DwarfFormatArg->getAsString(Args) << "DWARFv3 or greater";
3852 else if (!T.isArch64Bit())
3853 D.Diag(diag::err_drv_argument_only_allowed_with)
3854 << DwarfFormatArg->getAsString(Args) << "64 bit architecture";
3855 else if (!T.isOSBinFormatELF())
3856 D.Diag(diag::err_drv_argument_only_allowed_with)
3857 << DwarfFormatArg->getAsString(Args) << "ELF platforms";
3858 }
3859
3860 DwarfFormatArg->render(Args, CmdArgs);
3861 }
3862
renderDebugOptions(const ToolChain & TC,const Driver & D,const llvm::Triple & T,const ArgList & Args,bool EmitCodeView,bool IRInput,ArgStringList & CmdArgs,codegenoptions::DebugInfoKind & DebugInfoKind,DwarfFissionKind & DwarfFission)3863 static void renderDebugOptions(const ToolChain &TC, const Driver &D,
3864 const llvm::Triple &T, const ArgList &Args,
3865 bool EmitCodeView, bool IRInput,
3866 ArgStringList &CmdArgs,
3867 codegenoptions::DebugInfoKind &DebugInfoKind,
3868 DwarfFissionKind &DwarfFission) {
3869 // These two forms of profiling info can't be used together.
3870 if (const Arg *A1 = Args.getLastArg(options::OPT_fpseudo_probe_for_profiling))
3871 if (const Arg *A2 = Args.getLastArg(options::OPT_fdebug_info_for_profiling))
3872 D.Diag(diag::err_drv_argument_not_allowed_with)
3873 << A1->getAsString(Args) << A2->getAsString(Args);
3874
3875 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3876 options::OPT_fno_debug_info_for_profiling, false) &&
3877 checkDebugInfoOption(
3878 Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
3879 CmdArgs.push_back("-fdebug-info-for-profiling");
3880
3881 // The 'g' groups options involve a somewhat intricate sequence of decisions
3882 // about what to pass from the driver to the frontend, but by the time they
3883 // reach cc1 they've been factored into three well-defined orthogonal choices:
3884 // * what level of debug info to generate
3885 // * what dwarf version to write
3886 // * what debugger tuning to use
3887 // This avoids having to monkey around further in cc1 other than to disable
3888 // codeview if not running in a Windows environment. Perhaps even that
3889 // decision should be made in the driver as well though.
3890 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
3891
3892 bool SplitDWARFInlining =
3893 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
3894 options::OPT_fno_split_dwarf_inlining, false);
3895
3896 // Normally -gsplit-dwarf is only useful with -gN. For IR input, Clang does
3897 // object file generation and no IR generation, -gN should not be needed. So
3898 // allow -gsplit-dwarf with either -gN or IR input.
3899 if (IRInput || Args.hasArg(options::OPT_g_Group)) {
3900 Arg *SplitDWARFArg;
3901 DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
3902 if (DwarfFission != DwarfFissionKind::None &&
3903 !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
3904 DwarfFission = DwarfFissionKind::None;
3905 SplitDWARFInlining = false;
3906 }
3907 }
3908 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
3909 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3910
3911 // If the last option explicitly specified a debug-info level, use it.
3912 if (checkDebugInfoOption(A, Args, D, TC) &&
3913 A->getOption().matches(options::OPT_gN_Group)) {
3914 DebugInfoKind = DebugLevelToInfoKind(*A);
3915 // For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
3916 // complicated if you've disabled inline info in the skeleton CUs
3917 // (SplitDWARFInlining) - then there's value in composing split-dwarf and
3918 // line-tables-only, so let those compose naturally in that case.
3919 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
3920 DebugInfoKind == codegenoptions::DebugDirectivesOnly ||
3921 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
3922 SplitDWARFInlining))
3923 DwarfFission = DwarfFissionKind::None;
3924 }
3925 }
3926
3927 // If a debugger tuning argument appeared, remember it.
3928 if (const Arg *A =
3929 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
3930 if (checkDebugInfoOption(A, Args, D, TC)) {
3931 if (A->getOption().matches(options::OPT_glldb))
3932 DebuggerTuning = llvm::DebuggerKind::LLDB;
3933 else if (A->getOption().matches(options::OPT_gsce))
3934 DebuggerTuning = llvm::DebuggerKind::SCE;
3935 else if (A->getOption().matches(options::OPT_gdbx))
3936 DebuggerTuning = llvm::DebuggerKind::DBX;
3937 else
3938 DebuggerTuning = llvm::DebuggerKind::GDB;
3939 }
3940 }
3941
3942 // If a -gdwarf argument appeared, remember it.
3943 const Arg *GDwarfN = getDwarfNArg(Args);
3944 bool EmitDwarf = false;
3945 if (GDwarfN) {
3946 if (checkDebugInfoOption(GDwarfN, Args, D, TC))
3947 EmitDwarf = true;
3948 else
3949 GDwarfN = nullptr;
3950 }
3951
3952 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
3953 if (checkDebugInfoOption(A, Args, D, TC))
3954 EmitCodeView = true;
3955 }
3956
3957 // If the user asked for debug info but did not explicitly specify -gcodeview
3958 // or -gdwarf, ask the toolchain for the default format.
3959 if (!EmitCodeView && !EmitDwarf &&
3960 DebugInfoKind != codegenoptions::NoDebugInfo) {
3961 switch (TC.getDefaultDebugFormat()) {
3962 case codegenoptions::DIF_CodeView:
3963 EmitCodeView = true;
3964 break;
3965 case codegenoptions::DIF_DWARF:
3966 EmitDwarf = true;
3967 break;
3968 }
3969 }
3970
3971 unsigned RequestedDWARFVersion = 0; // DWARF version requested by the user
3972 unsigned EffectiveDWARFVersion = 0; // DWARF version TC can generate. It may
3973 // be lower than what the user wanted.
3974 unsigned DefaultDWARFVersion = ParseDebugDefaultVersion(TC, Args);
3975 if (EmitDwarf) {
3976 // Start with the platform default DWARF version
3977 RequestedDWARFVersion = TC.GetDefaultDwarfVersion();
3978 assert(RequestedDWARFVersion &&
3979 "toolchain default DWARF version must be nonzero");
3980
3981 // If the user specified a default DWARF version, that takes precedence
3982 // over the platform default.
3983 if (DefaultDWARFVersion)
3984 RequestedDWARFVersion = DefaultDWARFVersion;
3985
3986 // Override with a user-specified DWARF version
3987 if (GDwarfN)
3988 if (auto ExplicitVersion = DwarfVersionNum(GDwarfN->getSpelling()))
3989 RequestedDWARFVersion = ExplicitVersion;
3990 // Clamp effective DWARF version to the max supported by the toolchain.
3991 EffectiveDWARFVersion =
3992 std::min(RequestedDWARFVersion, TC.getMaxDwarfVersion());
3993 }
3994
3995 // -gline-directives-only supported only for the DWARF debug info.
3996 if (RequestedDWARFVersion == 0 &&
3997 DebugInfoKind == codegenoptions::DebugDirectivesOnly)
3998 DebugInfoKind = codegenoptions::NoDebugInfo;
3999
4000 // strict DWARF is set to false by default. But for DBX, we need it to be set
4001 // as true by default.
4002 if (const Arg *A = Args.getLastArg(options::OPT_gstrict_dwarf))
4003 (void)checkDebugInfoOption(A, Args, D, TC);
4004 if (Args.hasFlag(options::OPT_gstrict_dwarf, options::OPT_gno_strict_dwarf,
4005 DebuggerTuning == llvm::DebuggerKind::DBX))
4006 CmdArgs.push_back("-gstrict-dwarf");
4007
4008 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
4009 Args.ClaimAllArgs(options::OPT_g_flags_Group);
4010
4011 // Column info is included by default for everything except SCE and
4012 // CodeView. Clang doesn't track end columns, just starting columns, which,
4013 // in theory, is fine for CodeView (and PDB). In practice, however, the
4014 // Microsoft debuggers don't handle missing end columns well, and the AIX
4015 // debugger DBX also doesn't handle the columns well, so it's better not to
4016 // include any column info.
4017 if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
4018 (void)checkDebugInfoOption(A, Args, D, TC);
4019 if (!Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
4020 !EmitCodeView &&
4021 (DebuggerTuning != llvm::DebuggerKind::SCE &&
4022 DebuggerTuning != llvm::DebuggerKind::DBX)))
4023 CmdArgs.push_back("-gno-column-info");
4024
4025 // FIXME: Move backend command line options to the module.
4026 // If -gline-tables-only or -gline-directives-only is the last option it wins.
4027 if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
4028 if (checkDebugInfoOption(A, Args, D, TC)) {
4029 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
4030 DebugInfoKind != codegenoptions::DebugDirectivesOnly) {
4031 DebugInfoKind = codegenoptions::LimitedDebugInfo;
4032 CmdArgs.push_back("-dwarf-ext-refs");
4033 CmdArgs.push_back("-fmodule-format=obj");
4034 }
4035 }
4036
4037 if (T.isOSBinFormatELF() && SplitDWARFInlining)
4038 CmdArgs.push_back("-fsplit-dwarf-inlining");
4039
4040 // After we've dealt with all combinations of things that could
4041 // make DebugInfoKind be other than None or DebugLineTablesOnly,
4042 // figure out if we need to "upgrade" it to standalone debug info.
4043 // We parse these two '-f' options whether or not they will be used,
4044 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
4045 bool NeedFullDebug = Args.hasFlag(
4046 options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,
4047 DebuggerTuning == llvm::DebuggerKind::LLDB ||
4048 TC.GetDefaultStandaloneDebug());
4049 if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
4050 (void)checkDebugInfoOption(A, Args, D, TC);
4051
4052 if (DebugInfoKind == codegenoptions::LimitedDebugInfo) {
4053 if (Args.hasFlag(options::OPT_fno_eliminate_unused_debug_types,
4054 options::OPT_feliminate_unused_debug_types, false))
4055 DebugInfoKind = codegenoptions::UnusedTypeInfo;
4056 else if (NeedFullDebug)
4057 DebugInfoKind = codegenoptions::FullDebugInfo;
4058 }
4059
4060 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
4061 false)) {
4062 // Source embedding is a vendor extension to DWARF v5. By now we have
4063 // checked if a DWARF version was stated explicitly, and have otherwise
4064 // fallen back to the target default, so if this is still not at least 5
4065 // we emit an error.
4066 const Arg *A = Args.getLastArg(options::OPT_gembed_source);
4067 if (RequestedDWARFVersion < 5)
4068 D.Diag(diag::err_drv_argument_only_allowed_with)
4069 << A->getAsString(Args) << "-gdwarf-5";
4070 else if (EffectiveDWARFVersion < 5)
4071 // The toolchain has reduced allowed dwarf version, so we can't enable
4072 // -gembed-source.
4073 D.Diag(diag::warn_drv_dwarf_version_limited_by_target)
4074 << A->getAsString(Args) << TC.getTripleString() << 5
4075 << EffectiveDWARFVersion;
4076 else if (checkDebugInfoOption(A, Args, D, TC))
4077 CmdArgs.push_back("-gembed-source");
4078 }
4079
4080 if (EmitCodeView) {
4081 CmdArgs.push_back("-gcodeview");
4082
4083 // Emit codeview type hashes if requested.
4084 if (Args.hasFlag(options::OPT_gcodeview_ghash,
4085 options::OPT_gno_codeview_ghash, false)) {
4086 CmdArgs.push_back("-gcodeview-ghash");
4087 }
4088 }
4089
4090 // Omit inline line tables if requested.
4091 if (Args.hasFlag(options::OPT_gno_inline_line_tables,
4092 options::OPT_ginline_line_tables, false)) {
4093 CmdArgs.push_back("-gno-inline-line-tables");
4094 }
4095
4096 // When emitting remarks, we need at least debug lines in the output.
4097 if (willEmitRemarks(Args) &&
4098 DebugInfoKind <= codegenoptions::DebugDirectivesOnly)
4099 DebugInfoKind = codegenoptions::DebugLineTablesOnly;
4100
4101 // Adjust the debug info kind for the given toolchain.
4102 TC.adjustDebugInfoKind(DebugInfoKind, Args);
4103
4104 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, EffectiveDWARFVersion,
4105 DebuggerTuning);
4106
4107 // -fdebug-macro turns on macro debug info generation.
4108 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
4109 false))
4110 if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
4111 D, TC))
4112 CmdArgs.push_back("-debug-info-macro");
4113
4114 // -ggnu-pubnames turns on gnu style pubnames in the backend.
4115 const auto *PubnamesArg =
4116 Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
4117 options::OPT_gpubnames, options::OPT_gno_pubnames);
4118 if (DwarfFission != DwarfFissionKind::None ||
4119 (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
4120 if (!PubnamesArg ||
4121 (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
4122 !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
4123 CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
4124 options::OPT_gpubnames)
4125 ? "-gpubnames"
4126 : "-ggnu-pubnames");
4127
4128 if (Args.hasFlag(options::OPT_fdebug_ranges_base_address,
4129 options::OPT_fno_debug_ranges_base_address, false)) {
4130 CmdArgs.push_back("-fdebug-ranges-base-address");
4131 }
4132
4133 // -gdwarf-aranges turns on the emission of the aranges section in the
4134 // backend.
4135 // Always enabled for SCE tuning.
4136 bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
4137 if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
4138 NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
4139 if (NeedAranges) {
4140 CmdArgs.push_back("-mllvm");
4141 CmdArgs.push_back("-generate-arange-section");
4142 }
4143
4144 if (Args.hasFlag(options::OPT_fforce_dwarf_frame,
4145 options::OPT_fno_force_dwarf_frame, false))
4146 CmdArgs.push_back("-fforce-dwarf-frame");
4147
4148 if (Args.hasFlag(options::OPT_fdebug_types_section,
4149 options::OPT_fno_debug_types_section, false)) {
4150 if (!(T.isOSBinFormatELF() || T.isOSBinFormatWasm())) {
4151 D.Diag(diag::err_drv_unsupported_opt_for_target)
4152 << Args.getLastArg(options::OPT_fdebug_types_section)
4153 ->getAsString(Args)
4154 << T.getTriple();
4155 } else if (checkDebugInfoOption(
4156 Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
4157 TC)) {
4158 CmdArgs.push_back("-mllvm");
4159 CmdArgs.push_back("-generate-type-units");
4160 }
4161 }
4162
4163 // Decide how to render forward declarations of template instantiations.
4164 // SCE wants full descriptions, others just get them in the name.
4165 if (DebuggerTuning == llvm::DebuggerKind::SCE)
4166 CmdArgs.push_back("-debug-forward-template-params");
4167
4168 // Do we need to explicitly import anonymous namespaces into the parent
4169 // scope?
4170 if (DebuggerTuning == llvm::DebuggerKind::SCE)
4171 CmdArgs.push_back("-dwarf-explicit-import");
4172
4173 renderDwarfFormat(D, T, Args, CmdArgs, EffectiveDWARFVersion);
4174 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
4175 }
4176
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const4177 void Clang::ConstructJob(Compilation &C, const JobAction &JA,
4178 const InputInfo &Output, const InputInfoList &Inputs,
4179 const ArgList &Args, const char *LinkingOutput) const {
4180 const auto &TC = getToolChain();
4181 const llvm::Triple &RawTriple = TC.getTriple();
4182 const llvm::Triple &Triple = TC.getEffectiveTriple();
4183 const std::string &TripleStr = Triple.getTriple();
4184
4185 bool KernelOrKext =
4186 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
4187 const Driver &D = TC.getDriver();
4188 ArgStringList CmdArgs;
4189
4190 // Check number of inputs for sanity. We need at least one input.
4191 assert(Inputs.size() >= 1 && "Must have at least one input.");
4192 // CUDA/HIP compilation may have multiple inputs (source file + results of
4193 // device-side compilations). OpenMP device jobs also take the host IR as a
4194 // second input. Module precompilation accepts a list of header files to
4195 // include as part of the module. All other jobs are expected to have exactly
4196 // one input.
4197 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
4198 bool IsCudaDevice = JA.isDeviceOffloading(Action::OFK_Cuda);
4199 bool IsHIP = JA.isOffloading(Action::OFK_HIP);
4200 bool IsHIPDevice = JA.isDeviceOffloading(Action::OFK_HIP);
4201 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
4202 bool IsHeaderModulePrecompile = isa<HeaderModulePrecompileJobAction>(JA);
4203 bool IsDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
4204 JA.isDeviceOffloading(Action::OFK_Host));
4205 bool IsUsingLTO = D.isUsingLTO(IsDeviceOffloadAction);
4206 auto LTOMode = D.getLTOMode(IsDeviceOffloadAction);
4207
4208 // A header module compilation doesn't have a main input file, so invent a
4209 // fake one as a placeholder.
4210 const char *ModuleName = [&]{
4211 auto *ModuleNameArg = Args.getLastArg(options::OPT_fmodule_name_EQ);
4212 return ModuleNameArg ? ModuleNameArg->getValue() : "";
4213 }();
4214 InputInfo HeaderModuleInput(Inputs[0].getType(), ModuleName, ModuleName);
4215
4216 const InputInfo &Input =
4217 IsHeaderModulePrecompile ? HeaderModuleInput : Inputs[0];
4218
4219 InputInfoList ModuleHeaderInputs;
4220 const InputInfo *CudaDeviceInput = nullptr;
4221 const InputInfo *OpenMPDeviceInput = nullptr;
4222 for (const InputInfo &I : Inputs) {
4223 if (&I == &Input) {
4224 // This is the primary input.
4225 } else if (IsHeaderModulePrecompile &&
4226 types::getPrecompiledType(I.getType()) == types::TY_PCH) {
4227 types::ID Expected = HeaderModuleInput.getType();
4228 if (I.getType() != Expected) {
4229 D.Diag(diag::err_drv_module_header_wrong_kind)
4230 << I.getFilename() << types::getTypeName(I.getType())
4231 << types::getTypeName(Expected);
4232 }
4233 ModuleHeaderInputs.push_back(I);
4234 } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
4235 CudaDeviceInput = &I;
4236 } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
4237 OpenMPDeviceInput = &I;
4238 } else {
4239 llvm_unreachable("unexpectedly given multiple inputs");
4240 }
4241 }
4242
4243 const llvm::Triple *AuxTriple =
4244 (IsCuda || IsHIP) ? TC.getAuxTriple() : nullptr;
4245 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
4246 bool IsIAMCU = RawTriple.isOSIAMCU();
4247
4248 // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
4249 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
4250 // Windows), we need to pass Windows-specific flags to cc1.
4251 if (IsCuda || IsHIP)
4252 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
4253
4254 // C++ is not supported for IAMCU.
4255 if (IsIAMCU && types::isCXX(Input.getType()))
4256 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
4257
4258 // Invoke ourselves in -cc1 mode.
4259 //
4260 // FIXME: Implement custom jobs for internal actions.
4261 CmdArgs.push_back("-cc1");
4262
4263 // Add the "effective" target triple.
4264 CmdArgs.push_back("-triple");
4265 CmdArgs.push_back(Args.MakeArgString(TripleStr));
4266
4267 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
4268 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
4269 Args.ClaimAllArgs(options::OPT_MJ);
4270 } else if (const Arg *GenCDBFragment =
4271 Args.getLastArg(options::OPT_gen_cdb_fragment_path)) {
4272 DumpCompilationDatabaseFragmentToDir(GenCDBFragment->getValue(), C,
4273 TripleStr, Output, Input, Args);
4274 Args.ClaimAllArgs(options::OPT_gen_cdb_fragment_path);
4275 }
4276
4277 if (IsCuda || IsHIP) {
4278 // We have to pass the triple of the host if compiling for a CUDA/HIP device
4279 // and vice-versa.
4280 std::string NormalizedTriple;
4281 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
4282 JA.isDeviceOffloading(Action::OFK_HIP))
4283 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
4284 ->getTriple()
4285 .normalize();
4286 else {
4287 // Host-side compilation.
4288 NormalizedTriple =
4289 (IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
4290 : C.getSingleOffloadToolChain<Action::OFK_HIP>())
4291 ->getTriple()
4292 .normalize();
4293 if (IsCuda) {
4294 // We need to figure out which CUDA version we're compiling for, as that
4295 // determines how we load and launch GPU kernels.
4296 auto *CTC = static_cast<const toolchains::CudaToolChain *>(
4297 C.getSingleOffloadToolChain<Action::OFK_Cuda>());
4298 assert(CTC && "Expected valid CUDA Toolchain.");
4299 if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
4300 CmdArgs.push_back(Args.MakeArgString(
4301 Twine("-target-sdk-version=") +
4302 CudaVersionToString(CTC->CudaInstallation.version())));
4303 }
4304 }
4305 CmdArgs.push_back("-aux-triple");
4306 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
4307 }
4308
4309 if (Args.hasFlag(options::OPT_fsycl, options::OPT_fno_sycl, false)) {
4310 CmdArgs.push_back("-fsycl-is-device");
4311
4312 if (Arg *A = Args.getLastArg(options::OPT_sycl_std_EQ)) {
4313 A->render(Args, CmdArgs);
4314 } else {
4315 // Ensure the default version in SYCL mode is 2020.
4316 CmdArgs.push_back("-sycl-std=2020");
4317 }
4318 }
4319
4320 if (IsOpenMPDevice) {
4321 // We have to pass the triple of the host if compiling for an OpenMP device.
4322 std::string NormalizedTriple =
4323 C.getSingleOffloadToolChain<Action::OFK_Host>()
4324 ->getTriple()
4325 .normalize();
4326 CmdArgs.push_back("-aux-triple");
4327 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
4328 }
4329
4330 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
4331 Triple.getArch() == llvm::Triple::thumb)) {
4332 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
4333 unsigned Version = 0;
4334 bool Failure =
4335 Triple.getArchName().substr(Offset).consumeInteger(10, Version);
4336 if (Failure || Version < 7)
4337 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
4338 << TripleStr;
4339 }
4340
4341 // Push all default warning arguments that are specific to
4342 // the given target. These come before user provided warning options
4343 // are provided.
4344 TC.addClangWarningOptions(CmdArgs);
4345
4346 // FIXME: Subclass ToolChain for SPIR and move this to addClangWarningOptions.
4347 if (Triple.isSPIR())
4348 CmdArgs.push_back("-Wspir-compat");
4349
4350 // Select the appropriate action.
4351 RewriteKind rewriteKind = RK_None;
4352
4353 // If CollectArgsForIntegratedAssembler() isn't called below, claim the args
4354 // it claims when not running an assembler. Otherwise, clang would emit
4355 // "argument unused" warnings for assembler flags when e.g. adding "-E" to
4356 // flags while debugging something. That'd be somewhat inconvenient, and it's
4357 // also inconsistent with most other flags -- we don't warn on
4358 // -ffunction-sections not being used in -E mode either for example, even
4359 // though it's not really used either.
4360 if (!isa<AssembleJobAction>(JA)) {
4361 // The args claimed here should match the args used in
4362 // CollectArgsForIntegratedAssembler().
4363 if (TC.useIntegratedAs()) {
4364 Args.ClaimAllArgs(options::OPT_mrelax_all);
4365 Args.ClaimAllArgs(options::OPT_mno_relax_all);
4366 Args.ClaimAllArgs(options::OPT_mincremental_linker_compatible);
4367 Args.ClaimAllArgs(options::OPT_mno_incremental_linker_compatible);
4368 switch (C.getDefaultToolChain().getArch()) {
4369 case llvm::Triple::arm:
4370 case llvm::Triple::armeb:
4371 case llvm::Triple::thumb:
4372 case llvm::Triple::thumbeb:
4373 Args.ClaimAllArgs(options::OPT_mimplicit_it_EQ);
4374 break;
4375 default:
4376 break;
4377 }
4378 }
4379 Args.ClaimAllArgs(options::OPT_Wa_COMMA);
4380 Args.ClaimAllArgs(options::OPT_Xassembler);
4381 }
4382
4383 if (isa<AnalyzeJobAction>(JA)) {
4384 assert(JA.getType() == types::TY_Plist && "Invalid output type.");
4385 CmdArgs.push_back("-analyze");
4386 } else if (isa<MigrateJobAction>(JA)) {
4387 CmdArgs.push_back("-migrate");
4388 } else if (isa<PreprocessJobAction>(JA)) {
4389 if (Output.getType() == types::TY_Dependencies)
4390 CmdArgs.push_back("-Eonly");
4391 else {
4392 CmdArgs.push_back("-E");
4393 if (Args.hasArg(options::OPT_rewrite_objc) &&
4394 !Args.hasArg(options::OPT_g_Group))
4395 CmdArgs.push_back("-P");
4396 }
4397 } else if (isa<AssembleJobAction>(JA)) {
4398 CmdArgs.push_back("-emit-obj");
4399
4400 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
4401
4402 // Also ignore explicit -force_cpusubtype_ALL option.
4403 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
4404 } else if (isa<PrecompileJobAction>(JA)) {
4405 if (JA.getType() == types::TY_Nothing)
4406 CmdArgs.push_back("-fsyntax-only");
4407 else if (JA.getType() == types::TY_ModuleFile)
4408 CmdArgs.push_back(IsHeaderModulePrecompile
4409 ? "-emit-header-module"
4410 : "-emit-module-interface");
4411 else
4412 CmdArgs.push_back("-emit-pch");
4413 } else if (isa<VerifyPCHJobAction>(JA)) {
4414 CmdArgs.push_back("-verify-pch");
4415 } else {
4416 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
4417 "Invalid action for clang tool.");
4418 if (JA.getType() == types::TY_Nothing) {
4419 CmdArgs.push_back("-fsyntax-only");
4420 } else if (JA.getType() == types::TY_LLVM_IR ||
4421 JA.getType() == types::TY_LTO_IR) {
4422 CmdArgs.push_back("-emit-llvm");
4423 } else if (JA.getType() == types::TY_LLVM_BC ||
4424 JA.getType() == types::TY_LTO_BC) {
4425 // Emit textual llvm IR for AMDGPU offloading for -emit-llvm -S
4426 if (Triple.isAMDGCN() && IsOpenMPDevice && Args.hasArg(options::OPT_S) &&
4427 Args.hasArg(options::OPT_emit_llvm)) {
4428 CmdArgs.push_back("-emit-llvm");
4429 } else {
4430 CmdArgs.push_back("-emit-llvm-bc");
4431 }
4432 } else if (JA.getType() == types::TY_IFS ||
4433 JA.getType() == types::TY_IFS_CPP) {
4434 StringRef ArgStr =
4435 Args.hasArg(options::OPT_interface_stub_version_EQ)
4436 ? Args.getLastArgValue(options::OPT_interface_stub_version_EQ)
4437 : "experimental-ifs-v2";
4438 CmdArgs.push_back("-emit-interface-stubs");
4439 CmdArgs.push_back(
4440 Args.MakeArgString(Twine("-interface-stub-version=") + ArgStr.str()));
4441 } else if (JA.getType() == types::TY_PP_Asm) {
4442 CmdArgs.push_back("-S");
4443 } else if (JA.getType() == types::TY_AST) {
4444 CmdArgs.push_back("-emit-pch");
4445 } else if (JA.getType() == types::TY_ModuleFile) {
4446 CmdArgs.push_back("-module-file-info");
4447 } else if (JA.getType() == types::TY_RewrittenObjC) {
4448 CmdArgs.push_back("-rewrite-objc");
4449 rewriteKind = RK_NonFragile;
4450 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
4451 CmdArgs.push_back("-rewrite-objc");
4452 rewriteKind = RK_Fragile;
4453 } else {
4454 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
4455 }
4456
4457 // Preserve use-list order by default when emitting bitcode, so that
4458 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
4459 // same result as running passes here. For LTO, we don't need to preserve
4460 // the use-list order, since serialization to bitcode is part of the flow.
4461 if (JA.getType() == types::TY_LLVM_BC)
4462 CmdArgs.push_back("-emit-llvm-uselists");
4463
4464 if (IsUsingLTO) {
4465 if (!IsDeviceOffloadAction) {
4466 if (Args.hasArg(options::OPT_flto))
4467 CmdArgs.push_back("-flto");
4468 else {
4469 if (D.getLTOMode() == LTOK_Thin)
4470 CmdArgs.push_back("-flto=thin");
4471 else
4472 CmdArgs.push_back("-flto=full");
4473 }
4474 CmdArgs.push_back("-flto-unit");
4475 } else if (Triple.isAMDGPU()) {
4476 // Only AMDGPU supports device-side LTO
4477 assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);
4478 CmdArgs.push_back(Args.MakeArgString(
4479 Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));
4480 CmdArgs.push_back("-flto-unit");
4481 } else {
4482 D.Diag(diag::err_drv_unsupported_opt_for_target)
4483 << Args.getLastArg(options::OPT_foffload_lto,
4484 options::OPT_foffload_lto_EQ)
4485 ->getAsString(Args)
4486 << Triple.getTriple();
4487 }
4488 }
4489 }
4490
4491 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
4492 if (!types::isLLVMIR(Input.getType()))
4493 D.Diag(diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);
4494 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
4495 }
4496
4497 if (Args.getLastArg(options::OPT_fthin_link_bitcode_EQ))
4498 Args.AddLastArg(CmdArgs, options::OPT_fthin_link_bitcode_EQ);
4499
4500 if (Args.getLastArg(options::OPT_save_temps_EQ))
4501 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
4502
4503 auto *MemProfArg = Args.getLastArg(options::OPT_fmemory_profile,
4504 options::OPT_fmemory_profile_EQ,
4505 options::OPT_fno_memory_profile);
4506 if (MemProfArg &&
4507 !MemProfArg->getOption().matches(options::OPT_fno_memory_profile))
4508 MemProfArg->render(Args, CmdArgs);
4509
4510 // Embed-bitcode option.
4511 // Only white-listed flags below are allowed to be embedded.
4512 if (C.getDriver().embedBitcodeInObject() && !IsUsingLTO &&
4513 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
4514 // Add flags implied by -fembed-bitcode.
4515 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
4516 // Disable all llvm IR level optimizations.
4517 CmdArgs.push_back("-disable-llvm-passes");
4518
4519 // Render target options.
4520 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
4521
4522 // reject options that shouldn't be supported in bitcode
4523 // also reject kernel/kext
4524 static const constexpr unsigned kBitcodeOptionBlacklist[] = {
4525 options::OPT_mkernel,
4526 options::OPT_fapple_kext,
4527 options::OPT_ffunction_sections,
4528 options::OPT_fno_function_sections,
4529 options::OPT_fdata_sections,
4530 options::OPT_fno_data_sections,
4531 options::OPT_fbasic_block_sections_EQ,
4532 options::OPT_funique_internal_linkage_names,
4533 options::OPT_fno_unique_internal_linkage_names,
4534 options::OPT_funique_section_names,
4535 options::OPT_fno_unique_section_names,
4536 options::OPT_funique_basic_block_section_names,
4537 options::OPT_fno_unique_basic_block_section_names,
4538 options::OPT_mrestrict_it,
4539 options::OPT_mno_restrict_it,
4540 options::OPT_mstackrealign,
4541 options::OPT_mno_stackrealign,
4542 options::OPT_mstack_alignment,
4543 options::OPT_mcmodel_EQ,
4544 options::OPT_mlong_calls,
4545 options::OPT_mno_long_calls,
4546 options::OPT_ggnu_pubnames,
4547 options::OPT_gdwarf_aranges,
4548 options::OPT_fdebug_types_section,
4549 options::OPT_fno_debug_types_section,
4550 options::OPT_fdwarf_directory_asm,
4551 options::OPT_fno_dwarf_directory_asm,
4552 options::OPT_mrelax_all,
4553 options::OPT_mno_relax_all,
4554 options::OPT_ftrap_function_EQ,
4555 options::OPT_ffixed_r9,
4556 options::OPT_mfix_cortex_a53_835769,
4557 options::OPT_mno_fix_cortex_a53_835769,
4558 options::OPT_ffixed_x18,
4559 options::OPT_mglobal_merge,
4560 options::OPT_mno_global_merge,
4561 options::OPT_mred_zone,
4562 options::OPT_mno_red_zone,
4563 options::OPT_Wa_COMMA,
4564 options::OPT_Xassembler,
4565 options::OPT_mllvm,
4566 };
4567 for (const auto &A : Args)
4568 if (llvm::find(kBitcodeOptionBlacklist, A->getOption().getID()) !=
4569 std::end(kBitcodeOptionBlacklist))
4570 D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
4571
4572 // Render the CodeGen options that need to be passed.
4573 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
4574 options::OPT_fno_optimize_sibling_calls))
4575 CmdArgs.push_back("-mdisable-tail-calls");
4576
4577 RenderFloatingPointOptions(TC, D, isOptimizationLevelFast(Args), Args,
4578 CmdArgs, JA);
4579
4580 // Render ABI arguments
4581 switch (TC.getArch()) {
4582 default: break;
4583 case llvm::Triple::arm:
4584 case llvm::Triple::armeb:
4585 case llvm::Triple::thumbeb:
4586 RenderARMABI(Triple, Args, CmdArgs);
4587 break;
4588 case llvm::Triple::aarch64:
4589 case llvm::Triple::aarch64_32:
4590 case llvm::Triple::aarch64_be:
4591 RenderAArch64ABI(Triple, Args, CmdArgs);
4592 break;
4593 }
4594
4595 // Optimization level for CodeGen.
4596 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4597 if (A->getOption().matches(options::OPT_O4)) {
4598 CmdArgs.push_back("-O3");
4599 D.Diag(diag::warn_O4_is_O3);
4600 } else {
4601 A->render(Args, CmdArgs);
4602 }
4603 }
4604
4605 // Input/Output file.
4606 if (Output.getType() == types::TY_Dependencies) {
4607 // Handled with other dependency code.
4608 } else if (Output.isFilename()) {
4609 CmdArgs.push_back("-o");
4610 CmdArgs.push_back(Output.getFilename());
4611 } else {
4612 assert(Output.isNothing() && "Input output.");
4613 }
4614
4615 for (const auto &II : Inputs) {
4616 addDashXForInput(Args, II, CmdArgs);
4617 if (II.isFilename())
4618 CmdArgs.push_back(II.getFilename());
4619 else
4620 II.getInputArg().renderAsInput(Args, CmdArgs);
4621 }
4622
4623 C.addCommand(std::make_unique<Command>(
4624 JA, *this, ResponseFileSupport::AtFileUTF8(), D.getClangProgramPath(),
4625 CmdArgs, Inputs, Output));
4626 return;
4627 }
4628
4629 if (C.getDriver().embedBitcodeMarkerOnly() && !IsUsingLTO)
4630 CmdArgs.push_back("-fembed-bitcode=marker");
4631
4632 // We normally speed up the clang process a bit by skipping destructors at
4633 // exit, but when we're generating diagnostics we can rely on some of the
4634 // cleanup.
4635 if (!C.isForDiagnostics())
4636 CmdArgs.push_back("-disable-free");
4637
4638 #ifdef NDEBUG
4639 const bool IsAssertBuild = false;
4640 #else
4641 const bool IsAssertBuild = true;
4642 #endif
4643
4644 // Disable the verification pass in -asserts builds.
4645 if (!IsAssertBuild)
4646 CmdArgs.push_back("-disable-llvm-verifier");
4647
4648 // Discard value names in assert builds unless otherwise specified.
4649 if (Args.hasFlag(options::OPT_fdiscard_value_names,
4650 options::OPT_fno_discard_value_names, !IsAssertBuild)) {
4651 if (Args.hasArg(options::OPT_fdiscard_value_names) &&
4652 (std::any_of(Inputs.begin(), Inputs.end(),
4653 [](const clang::driver::InputInfo &II) {
4654 return types::isLLVMIR(II.getType());
4655 }))) {
4656 D.Diag(diag::warn_ignoring_fdiscard_for_bitcode);
4657 }
4658 CmdArgs.push_back("-discard-value-names");
4659 }
4660
4661 // Set the main file name, so that debug info works even with
4662 // -save-temps.
4663 CmdArgs.push_back("-main-file-name");
4664 CmdArgs.push_back(getBaseInputName(Args, Input));
4665
4666 // Some flags which affect the language (via preprocessor
4667 // defines).
4668 if (Args.hasArg(options::OPT_static))
4669 CmdArgs.push_back("-static-define");
4670
4671 if (Args.hasArg(options::OPT_municode))
4672 CmdArgs.push_back("-DUNICODE");
4673
4674 if (isa<AnalyzeJobAction>(JA))
4675 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
4676
4677 if (isa<AnalyzeJobAction>(JA) ||
4678 (isa<PreprocessJobAction>(JA) && Args.hasArg(options::OPT__analyze)))
4679 CmdArgs.push_back("-setup-static-analyzer");
4680
4681 // Enable compatilibily mode to avoid analyzer-config related errors.
4682 // Since we can't access frontend flags through hasArg, let's manually iterate
4683 // through them.
4684 bool FoundAnalyzerConfig = false;
4685 for (auto Arg : Args.filtered(options::OPT_Xclang))
4686 if (StringRef(Arg->getValue()) == "-analyzer-config") {
4687 FoundAnalyzerConfig = true;
4688 break;
4689 }
4690 if (!FoundAnalyzerConfig)
4691 for (auto Arg : Args.filtered(options::OPT_Xanalyzer))
4692 if (StringRef(Arg->getValue()) == "-analyzer-config") {
4693 FoundAnalyzerConfig = true;
4694 break;
4695 }
4696 if (FoundAnalyzerConfig)
4697 CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
4698
4699 CheckCodeGenerationOptions(D, Args);
4700
4701 unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
4702 assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
4703 if (FunctionAlignment) {
4704 CmdArgs.push_back("-function-alignment");
4705 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
4706 }
4707
4708 llvm::Reloc::Model RelocationModel;
4709 unsigned PICLevel;
4710 bool IsPIE;
4711 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
4712
4713 bool IsROPI = RelocationModel == llvm::Reloc::ROPI ||
4714 RelocationModel == llvm::Reloc::ROPI_RWPI;
4715 bool IsRWPI = RelocationModel == llvm::Reloc::RWPI ||
4716 RelocationModel == llvm::Reloc::ROPI_RWPI;
4717
4718 if (Args.hasArg(options::OPT_mcmse) &&
4719 !Args.hasArg(options::OPT_fallow_unsupported)) {
4720 if (IsROPI)
4721 D.Diag(diag::err_cmse_pi_are_incompatible) << IsROPI;
4722 if (IsRWPI)
4723 D.Diag(diag::err_cmse_pi_are_incompatible) << !IsRWPI;
4724 }
4725
4726 if (IsROPI && types::isCXX(Input.getType()) &&
4727 !Args.hasArg(options::OPT_fallow_unsupported))
4728 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
4729
4730 const char *RMName = RelocationModelName(RelocationModel);
4731 if (RMName) {
4732 CmdArgs.push_back("-mrelocation-model");
4733 CmdArgs.push_back(RMName);
4734 }
4735 if (PICLevel > 0) {
4736 CmdArgs.push_back("-pic-level");
4737 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
4738 if (IsPIE)
4739 CmdArgs.push_back("-pic-is-pie");
4740 }
4741
4742 if (RelocationModel == llvm::Reloc::ROPI ||
4743 RelocationModel == llvm::Reloc::ROPI_RWPI)
4744 CmdArgs.push_back("-fropi");
4745 if (RelocationModel == llvm::Reloc::RWPI ||
4746 RelocationModel == llvm::Reloc::ROPI_RWPI)
4747 CmdArgs.push_back("-frwpi");
4748
4749 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
4750 CmdArgs.push_back("-meabi");
4751 CmdArgs.push_back(A->getValue());
4752 }
4753
4754 // -fsemantic-interposition is forwarded to CC1: set the
4755 // "SemanticInterposition" metadata to 1 (make some linkages interposable) and
4756 // make default visibility external linkage definitions dso_preemptable.
4757 //
4758 // -fno-semantic-interposition: if the target supports .Lfoo$local local
4759 // aliases (make default visibility external linkage definitions dso_local).
4760 // This is the CC1 default for ELF to match COFF/Mach-O.
4761 //
4762 // Otherwise use Clang's traditional behavior: like
4763 // -fno-semantic-interposition but local aliases are not used. So references
4764 // can be interposed if not optimized out.
4765 if (Triple.isOSBinFormatELF()) {
4766 Arg *A = Args.getLastArg(options::OPT_fsemantic_interposition,
4767 options::OPT_fno_semantic_interposition);
4768 if (RelocationModel != llvm::Reloc::Static && !IsPIE) {
4769 // The supported targets need to call AsmPrinter::getSymbolPreferLocal.
4770 bool SupportsLocalAlias =
4771 Triple.isAArch64() || Triple.isRISCV() || Triple.isX86();
4772 if (!A)
4773 CmdArgs.push_back("-fhalf-no-semantic-interposition");
4774 else if (A->getOption().matches(options::OPT_fsemantic_interposition))
4775 A->render(Args, CmdArgs);
4776 else if (!SupportsLocalAlias)
4777 CmdArgs.push_back("-fhalf-no-semantic-interposition");
4778 }
4779 }
4780
4781 {
4782 std::string Model;
4783 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
4784 if (!TC.isThreadModelSupported(A->getValue()))
4785 D.Diag(diag::err_drv_invalid_thread_model_for_target)
4786 << A->getValue() << A->getAsString(Args);
4787 Model = A->getValue();
4788 } else
4789 Model = TC.getThreadModel();
4790 if (Model != "posix") {
4791 CmdArgs.push_back("-mthread-model");
4792 CmdArgs.push_back(Args.MakeArgString(Model));
4793 }
4794 }
4795
4796 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
4797
4798 if (Args.hasFlag(options::OPT_fmerge_all_constants,
4799 options::OPT_fno_merge_all_constants, false))
4800 CmdArgs.push_back("-fmerge-all-constants");
4801
4802 if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
4803 options::OPT_fdelete_null_pointer_checks, false))
4804 CmdArgs.push_back("-fno-delete-null-pointer-checks");
4805
4806 // LLVM Code Generator Options.
4807
4808 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file_EQ)) {
4809 StringRef Map = A->getValue();
4810 if (!llvm::sys::fs::exists(Map)) {
4811 D.Diag(diag::err_drv_no_such_file) << Map;
4812 } else {
4813 A->render(Args, CmdArgs);
4814 A->claim();
4815 }
4816 }
4817
4818 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ_vec_extabi,
4819 options::OPT_mabi_EQ_vec_default)) {
4820 if (!Triple.isOSAIX())
4821 D.Diag(diag::err_drv_unsupported_opt_for_target)
4822 << A->getSpelling() << RawTriple.str();
4823 if (A->getOption().getID() == options::OPT_mabi_EQ_vec_extabi)
4824 CmdArgs.push_back("-mabi=vec-extabi");
4825 else
4826 D.Diag(diag::err_aix_default_altivec_abi);
4827 }
4828
4829 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
4830 StringRef v = A->getValue();
4831 CmdArgs.push_back("-mllvm");
4832 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
4833 A->claim();
4834 }
4835
4836 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
4837 true))
4838 CmdArgs.push_back("-fno-jump-tables");
4839
4840 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
4841 options::OPT_fno_profile_sample_accurate, false))
4842 CmdArgs.push_back("-fprofile-sample-accurate");
4843
4844 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
4845 options::OPT_fno_preserve_as_comments, true))
4846 CmdArgs.push_back("-fno-preserve-as-comments");
4847
4848 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
4849 CmdArgs.push_back("-mregparm");
4850 CmdArgs.push_back(A->getValue());
4851 }
4852
4853 if (Arg *A = Args.getLastArg(options::OPT_maix_struct_return,
4854 options::OPT_msvr4_struct_return)) {
4855 if (!TC.getTriple().isPPC32()) {
4856 D.Diag(diag::err_drv_unsupported_opt_for_target)
4857 << A->getSpelling() << RawTriple.str();
4858 } else if (A->getOption().matches(options::OPT_maix_struct_return)) {
4859 CmdArgs.push_back("-maix-struct-return");
4860 } else {
4861 assert(A->getOption().matches(options::OPT_msvr4_struct_return));
4862 CmdArgs.push_back("-msvr4-struct-return");
4863 }
4864 }
4865
4866 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
4867 options::OPT_freg_struct_return)) {
4868 if (TC.getArch() != llvm::Triple::x86) {
4869 D.Diag(diag::err_drv_unsupported_opt_for_target)
4870 << A->getSpelling() << RawTriple.str();
4871 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
4872 CmdArgs.push_back("-fpcc-struct-return");
4873 } else {
4874 assert(A->getOption().matches(options::OPT_freg_struct_return));
4875 CmdArgs.push_back("-freg-struct-return");
4876 }
4877 }
4878
4879 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
4880 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
4881
4882 if (Args.hasArg(options::OPT_fenable_matrix)) {
4883 // enable-matrix is needed by both the LangOpts and by LLVM.
4884 CmdArgs.push_back("-fenable-matrix");
4885 CmdArgs.push_back("-mllvm");
4886 CmdArgs.push_back("-enable-matrix");
4887 }
4888
4889 CodeGenOptions::FramePointerKind FPKeepKind =
4890 getFramePointerKind(Args, RawTriple);
4891 const char *FPKeepKindStr = nullptr;
4892 switch (FPKeepKind) {
4893 case CodeGenOptions::FramePointerKind::None:
4894 FPKeepKindStr = "-mframe-pointer=none";
4895 break;
4896 case CodeGenOptions::FramePointerKind::NonLeaf:
4897 FPKeepKindStr = "-mframe-pointer=non-leaf";
4898 break;
4899 case CodeGenOptions::FramePointerKind::All:
4900 FPKeepKindStr = "-mframe-pointer=all";
4901 break;
4902 }
4903 assert(FPKeepKindStr && "unknown FramePointerKind");
4904 CmdArgs.push_back(FPKeepKindStr);
4905
4906 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
4907 options::OPT_fno_zero_initialized_in_bss, true))
4908 CmdArgs.push_back("-fno-zero-initialized-in-bss");
4909
4910 bool OFastEnabled = isOptimizationLevelFast(Args);
4911 // If -Ofast is the optimization level, then -fstrict-aliasing should be
4912 // enabled. This alias option is being used to simplify the hasFlag logic.
4913 OptSpecifier StrictAliasingAliasOption =
4914 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
4915 // We turn strict aliasing off by default if we're in CL mode, since MSVC
4916 // doesn't do any TBAA.
4917 bool TBAAOnByDefault = !D.IsCLMode();
4918 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
4919 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
4920 CmdArgs.push_back("-relaxed-aliasing");
4921 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
4922 options::OPT_fno_struct_path_tbaa))
4923 CmdArgs.push_back("-no-struct-path-tbaa");
4924 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
4925 false))
4926 CmdArgs.push_back("-fstrict-enums");
4927 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
4928 true))
4929 CmdArgs.push_back("-fno-strict-return");
4930 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
4931 options::OPT_fno_allow_editor_placeholders, false))
4932 CmdArgs.push_back("-fallow-editor-placeholders");
4933 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
4934 options::OPT_fno_strict_vtable_pointers,
4935 false))
4936 CmdArgs.push_back("-fstrict-vtable-pointers");
4937 if (Args.hasFlag(options::OPT_fforce_emit_vtables,
4938 options::OPT_fno_force_emit_vtables,
4939 false))
4940 CmdArgs.push_back("-fforce-emit-vtables");
4941 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
4942 options::OPT_fno_optimize_sibling_calls))
4943 CmdArgs.push_back("-mdisable-tail-calls");
4944 if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
4945 options::OPT_fescaping_block_tail_calls, false))
4946 CmdArgs.push_back("-fno-escaping-block-tail-calls");
4947
4948 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
4949 options::OPT_fno_fine_grained_bitfield_accesses);
4950
4951 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_relative_cxx_abi_vtables,
4952 options::OPT_fno_experimental_relative_cxx_abi_vtables);
4953
4954 // Handle segmented stacks.
4955 if (Args.hasFlag(options::OPT_fsplit_stack, options::OPT_fno_split_stack,
4956 false))
4957 CmdArgs.push_back("-fsplit-stack");
4958
4959 RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs, JA);
4960
4961 if (Arg *A = Args.getLastArg(options::OPT_fextend_args_EQ)) {
4962 const llvm::Triple::ArchType Arch = TC.getArch();
4963 if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
4964 StringRef V = A->getValue();
4965 if (V == "64")
4966 CmdArgs.push_back("-fextend-arguments=64");
4967 else if (V != "32")
4968 D.Diag(diag::err_drv_invalid_argument_to_option)
4969 << A->getValue() << A->getOption().getName();
4970 } else
4971 D.Diag(diag::err_drv_unsupported_opt_for_target)
4972 << A->getOption().getName() << TripleStr;
4973 }
4974
4975 if (Arg *A = Args.getLastArg(options::OPT_mdouble_EQ)) {
4976 if (TC.getArch() == llvm::Triple::avr)
4977 A->render(Args, CmdArgs);
4978 else
4979 D.Diag(diag::err_drv_unsupported_opt_for_target)
4980 << A->getAsString(Args) << TripleStr;
4981 }
4982
4983 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) {
4984 if (TC.getTriple().isX86())
4985 A->render(Args, CmdArgs);
4986 else if (TC.getTriple().isPPC() &&
4987 (A->getOption().getID() != options::OPT_mlong_double_80))
4988 A->render(Args, CmdArgs);
4989 else
4990 D.Diag(diag::err_drv_unsupported_opt_for_target)
4991 << A->getAsString(Args) << TripleStr;
4992 }
4993
4994 // Decide whether to use verbose asm. Verbose assembly is the default on
4995 // toolchains which have the integrated assembler on by default.
4996 bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
4997 if (!Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
4998 IsIntegratedAssemblerDefault))
4999 CmdArgs.push_back("-fno-verbose-asm");
5000
5001 // Parse 'none' or '$major.$minor'. Disallow -fbinutils-version=0 because we
5002 // use that to indicate the MC default in the backend.
5003 if (Arg *A = Args.getLastArg(options::OPT_fbinutils_version_EQ)) {
5004 StringRef V = A->getValue();
5005 unsigned Num;
5006 if (V == "none")
5007 A->render(Args, CmdArgs);
5008 else if (!V.consumeInteger(10, Num) && Num > 0 &&
5009 (V.empty() || (V.consume_front(".") &&
5010 !V.consumeInteger(10, Num) && V.empty())))
5011 A->render(Args, CmdArgs);
5012 else
5013 D.Diag(diag::err_drv_invalid_argument_to_option)
5014 << A->getValue() << A->getOption().getName();
5015 }
5016
5017 if (!TC.useIntegratedAs())
5018 CmdArgs.push_back("-no-integrated-as");
5019
5020 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
5021 CmdArgs.push_back("-mdebug-pass");
5022 CmdArgs.push_back("Structure");
5023 }
5024 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
5025 CmdArgs.push_back("-mdebug-pass");
5026 CmdArgs.push_back("Arguments");
5027 }
5028
5029 // Enable -mconstructor-aliases except on darwin, where we have to work around
5030 // a linker bug (see <rdar://problem/7651567>), and CUDA/AMDGPU device code,
5031 // where aliases aren't supported. Similarly, aliases aren't yet supported
5032 // for AIX.
5033 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX() &&
5034 !RawTriple.isAMDGPU() && !RawTriple.isOSAIX())
5035 CmdArgs.push_back("-mconstructor-aliases");
5036
5037 // Darwin's kernel doesn't support guard variables; just die if we
5038 // try to use them.
5039 if (KernelOrKext && RawTriple.isOSDarwin())
5040 CmdArgs.push_back("-fforbid-guard-variables");
5041
5042 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
5043 Triple.isWindowsGNUEnvironment())) {
5044 CmdArgs.push_back("-mms-bitfields");
5045 }
5046
5047 // Non-PIC code defaults to -fdirect-access-external-data while PIC code
5048 // defaults to -fno-direct-access-external-data. Pass the option if different
5049 // from the default.
5050 if (Arg *A = Args.getLastArg(options::OPT_fdirect_access_external_data,
5051 options::OPT_fno_direct_access_external_data))
5052 if (A->getOption().matches(options::OPT_fdirect_access_external_data) !=
5053 (PICLevel == 0))
5054 A->render(Args, CmdArgs);
5055
5056 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
5057 CmdArgs.push_back("-fno-plt");
5058 }
5059
5060 // -fhosted is default.
5061 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
5062 // use Freestanding.
5063 bool Freestanding =
5064 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
5065 KernelOrKext;
5066 if (Freestanding)
5067 CmdArgs.push_back("-ffreestanding");
5068
5069 // This is a coarse approximation of what llvm-gcc actually does, both
5070 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
5071 // complicated ways.
5072 bool UnwindTables =
5073 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
5074 options::OPT_fno_asynchronous_unwind_tables,
5075 (TC.IsUnwindTablesDefault(Args) ||
5076 TC.getSanitizerArgs().needsUnwindTables()) &&
5077 !Freestanding);
5078 UnwindTables = Args.hasFlag(options::OPT_funwind_tables,
5079 options::OPT_fno_unwind_tables, UnwindTables);
5080 if (UnwindTables)
5081 CmdArgs.push_back("-munwind-tables");
5082
5083 // Prepare `-aux-target-cpu` and `-aux-target-feature` unless
5084 // `--gpu-use-aux-triple-only` is specified.
5085 if (!Args.getLastArg(options::OPT_gpu_use_aux_triple_only) &&
5086 (IsCudaDevice || IsHIPDevice)) {
5087 const ArgList &HostArgs =
5088 C.getArgsForToolChain(nullptr, StringRef(), Action::OFK_None);
5089 std::string HostCPU =
5090 getCPUName(HostArgs, *TC.getAuxTriple(), /*FromAs*/ false);
5091 if (!HostCPU.empty()) {
5092 CmdArgs.push_back("-aux-target-cpu");
5093 CmdArgs.push_back(Args.MakeArgString(HostCPU));
5094 }
5095 getTargetFeatures(D, *TC.getAuxTriple(), HostArgs, CmdArgs,
5096 /*ForAS*/ false, /*IsAux*/ true);
5097 }
5098
5099 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
5100
5101 // FIXME: Handle -mtune=.
5102 (void)Args.hasArg(options::OPT_mtune_EQ);
5103
5104 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
5105 StringRef CM = A->getValue();
5106 if (CM == "small" || CM == "kernel" || CM == "medium" || CM == "large" ||
5107 CM == "tiny")
5108 A->render(Args, CmdArgs);
5109 else
5110 D.Diag(diag::err_drv_invalid_argument_to_option)
5111 << CM << A->getOption().getName();
5112 }
5113
5114 if (Arg *A = Args.getLastArg(options::OPT_mtls_size_EQ)) {
5115 StringRef Value = A->getValue();
5116 unsigned TLSSize = 0;
5117 Value.getAsInteger(10, TLSSize);
5118 if (!Triple.isAArch64() || !Triple.isOSBinFormatELF())
5119 D.Diag(diag::err_drv_unsupported_opt_for_target)
5120 << A->getOption().getName() << TripleStr;
5121 if (TLSSize != 12 && TLSSize != 24 && TLSSize != 32 && TLSSize != 48)
5122 D.Diag(diag::err_drv_invalid_int_value)
5123 << A->getOption().getName() << Value;
5124 Args.AddLastArg(CmdArgs, options::OPT_mtls_size_EQ);
5125 }
5126
5127 // Add the target cpu
5128 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
5129 if (!CPU.empty()) {
5130 CmdArgs.push_back("-target-cpu");
5131 CmdArgs.push_back(Args.MakeArgString(CPU));
5132 }
5133
5134 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
5135
5136 // FIXME: For now we want to demote any errors to warnings, when they have
5137 // been raised for asking the wrong question of scalable vectors, such as
5138 // asking for the fixed number of elements. This may happen because code that
5139 // is not yet ported to work for scalable vectors uses the wrong interfaces,
5140 // whereas the behaviour is actually correct. Emitting a warning helps bring
5141 // up scalable vector support in an incremental way. When scalable vector
5142 // support is stable enough, all uses of wrong interfaces should be considered
5143 // as errors, but until then, we can live with a warning being emitted by the
5144 // compiler. This way, Clang can be used to compile code with scalable vectors
5145 // and identify possible issues.
5146 if (isa<BackendJobAction>(JA)) {
5147 CmdArgs.push_back("-mllvm");
5148 CmdArgs.push_back("-treat-scalable-fixed-error-as-warning");
5149 }
5150
5151 // These two are potentially updated by AddClangCLArgs.
5152 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
5153 bool EmitCodeView = false;
5154
5155 // Add clang-cl arguments.
5156 types::ID InputType = Input.getType();
5157 if (D.IsCLMode())
5158 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
5159
5160 DwarfFissionKind DwarfFission = DwarfFissionKind::None;
5161 renderDebugOptions(TC, D, RawTriple, Args, EmitCodeView,
5162 types::isLLVMIR(InputType), CmdArgs, DebugInfoKind,
5163 DwarfFission);
5164
5165 // Add the split debug info name to the command lines here so we
5166 // can propagate it to the backend.
5167 bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
5168 (TC.getTriple().isOSBinFormatELF() ||
5169 TC.getTriple().isOSBinFormatWasm()) &&
5170 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
5171 isa<BackendJobAction>(JA));
5172 if (SplitDWARF) {
5173 const char *SplitDWARFOut = SplitDebugName(JA, Args, Input, Output);
5174 CmdArgs.push_back("-split-dwarf-file");
5175 CmdArgs.push_back(SplitDWARFOut);
5176 if (DwarfFission == DwarfFissionKind::Split) {
5177 CmdArgs.push_back("-split-dwarf-output");
5178 CmdArgs.push_back(SplitDWARFOut);
5179 }
5180 }
5181
5182 // Pass the linker version in use.
5183 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
5184 CmdArgs.push_back("-target-linker-version");
5185 CmdArgs.push_back(A->getValue());
5186 }
5187
5188 // Explicitly error on some things we know we don't support and can't just
5189 // ignore.
5190 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
5191 Arg *Unsupported;
5192 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
5193 TC.getArch() == llvm::Triple::x86) {
5194 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
5195 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
5196 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
5197 << Unsupported->getOption().getName();
5198 }
5199 // The faltivec option has been superseded by the maltivec option.
5200 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
5201 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
5202 << Unsupported->getOption().getName()
5203 << "please use -maltivec and include altivec.h explicitly";
5204 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
5205 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
5206 << Unsupported->getOption().getName() << "please use -mno-altivec";
5207 }
5208
5209 Args.AddAllArgs(CmdArgs, options::OPT_v);
5210
5211 if (Args.getLastArg(options::OPT_H)) {
5212 CmdArgs.push_back("-H");
5213 CmdArgs.push_back("-sys-header-deps");
5214 }
5215 Args.AddAllArgs(CmdArgs, options::OPT_fshow_skipped_includes);
5216
5217 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
5218 CmdArgs.push_back("-header-include-file");
5219 CmdArgs.push_back(!D.CCPrintHeadersFilename.empty()
5220 ? D.CCPrintHeadersFilename.c_str()
5221 : "-");
5222 CmdArgs.push_back("-sys-header-deps");
5223 }
5224 Args.AddLastArg(CmdArgs, options::OPT_P);
5225 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
5226
5227 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
5228 CmdArgs.push_back("-diagnostic-log-file");
5229 CmdArgs.push_back(!D.CCLogDiagnosticsFilename.empty()
5230 ? D.CCLogDiagnosticsFilename.c_str()
5231 : "-");
5232 }
5233
5234 // Give the gen diagnostics more chances to succeed, by avoiding intentional
5235 // crashes.
5236 if (D.CCGenDiagnostics)
5237 CmdArgs.push_back("-disable-pragma-debug-crash");
5238
5239 // Allow backend to put its diagnostic files in the same place as frontend
5240 // crash diagnostics files.
5241 if (Args.hasArg(options::OPT_fcrash_diagnostics_dir)) {
5242 StringRef Dir = Args.getLastArgValue(options::OPT_fcrash_diagnostics_dir);
5243 CmdArgs.push_back("-mllvm");
5244 CmdArgs.push_back(Args.MakeArgString("-crash-diagnostics-dir=" + Dir));
5245 }
5246
5247 bool UseSeparateSections = isUseSeparateSections(Triple);
5248
5249 if (Args.hasFlag(options::OPT_ffunction_sections,
5250 options::OPT_fno_function_sections, UseSeparateSections)) {
5251 CmdArgs.push_back("-ffunction-sections");
5252 }
5253
5254 if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_sections_EQ)) {
5255 if (Triple.isX86() && Triple.isOSBinFormatELF()) {
5256 StringRef Val = A->getValue();
5257 if (Val != "all" && Val != "labels" && Val != "none" &&
5258 !Val.startswith("list="))
5259 D.Diag(diag::err_drv_invalid_value)
5260 << A->getAsString(Args) << A->getValue();
5261 else
5262 A->render(Args, CmdArgs);
5263 } else {
5264 D.Diag(diag::err_drv_unsupported_opt_for_target)
5265 << A->getAsString(Args) << TripleStr;
5266 }
5267 }
5268
5269 bool HasDefaultDataSections = Triple.isOSBinFormatXCOFF();
5270 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
5271 UseSeparateSections || HasDefaultDataSections)) {
5272 CmdArgs.push_back("-fdata-sections");
5273 }
5274
5275 if (!Args.hasFlag(options::OPT_funique_section_names,
5276 options::OPT_fno_unique_section_names, true))
5277 CmdArgs.push_back("-fno-unique-section-names");
5278
5279 if (Args.hasFlag(options::OPT_funique_internal_linkage_names,
5280 options::OPT_fno_unique_internal_linkage_names, false))
5281 CmdArgs.push_back("-funique-internal-linkage-names");
5282
5283 if (Args.hasFlag(options::OPT_funique_basic_block_section_names,
5284 options::OPT_fno_unique_basic_block_section_names, false))
5285 CmdArgs.push_back("-funique-basic-block-section-names");
5286
5287 if (Arg *A = Args.getLastArg(options::OPT_fsplit_machine_functions,
5288 options::OPT_fno_split_machine_functions)) {
5289 // This codegen pass is only available on x86-elf targets.
5290 if (Triple.isX86() && Triple.isOSBinFormatELF()) {
5291 if (A->getOption().matches(options::OPT_fsplit_machine_functions))
5292 A->render(Args, CmdArgs);
5293 } else {
5294 D.Diag(diag::err_drv_unsupported_opt_for_target)
5295 << A->getAsString(Args) << TripleStr;
5296 }
5297 }
5298
5299 Args.AddLastArg(CmdArgs, options::OPT_finstrument_functions,
5300 options::OPT_finstrument_functions_after_inlining,
5301 options::OPT_finstrument_function_entry_bare);
5302
5303 // NVPTX/AMDGCN doesn't support PGO or coverage. There's no runtime support
5304 // for sampling, overhead of call arc collection is way too high and there's
5305 // no way to collect the output.
5306 if (!Triple.isNVPTX() && !Triple.isAMDGCN())
5307 addPGOAndCoverageFlags(TC, C, D, Output, Args, CmdArgs);
5308
5309 Args.AddLastArg(CmdArgs, options::OPT_fclang_abi_compat_EQ);
5310
5311 // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
5312 if (RawTriple.isPS4CPU() &&
5313 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
5314 PS4cpu::addProfileRTArgs(TC, Args, CmdArgs);
5315 PS4cpu::addSanitizerArgs(TC, CmdArgs);
5316 }
5317
5318 // Pass options for controlling the default header search paths.
5319 if (Args.hasArg(options::OPT_nostdinc)) {
5320 CmdArgs.push_back("-nostdsysteminc");
5321 CmdArgs.push_back("-nobuiltininc");
5322 } else {
5323 if (Args.hasArg(options::OPT_nostdlibinc))
5324 CmdArgs.push_back("-nostdsysteminc");
5325 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
5326 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
5327 }
5328
5329 // Pass the path to compiler resource files.
5330 CmdArgs.push_back("-resource-dir");
5331 CmdArgs.push_back(D.ResourceDir.c_str());
5332
5333 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
5334
5335 RenderARCMigrateToolOptions(D, Args, CmdArgs);
5336
5337 // Add preprocessing options like -I, -D, etc. if we are using the
5338 // preprocessor.
5339 //
5340 // FIXME: Support -fpreprocessed
5341 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
5342 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
5343
5344 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
5345 // that "The compiler can only warn and ignore the option if not recognized".
5346 // When building with ccache, it will pass -D options to clang even on
5347 // preprocessed inputs and configure concludes that -fPIC is not supported.
5348 Args.ClaimAllArgs(options::OPT_D);
5349
5350 // Manually translate -O4 to -O3; let clang reject others.
5351 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
5352 if (A->getOption().matches(options::OPT_O4)) {
5353 CmdArgs.push_back("-O3");
5354 D.Diag(diag::warn_O4_is_O3);
5355 } else {
5356 A->render(Args, CmdArgs);
5357 }
5358 }
5359
5360 // Warn about ignored options to clang.
5361 for (const Arg *A :
5362 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
5363 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
5364 A->claim();
5365 }
5366
5367 for (const Arg *A :
5368 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
5369 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
5370 A->claim();
5371 }
5372
5373 claimNoWarnArgs(Args);
5374
5375 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
5376
5377 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
5378 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
5379 CmdArgs.push_back("-pedantic");
5380 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
5381 Args.AddLastArg(CmdArgs, options::OPT_w);
5382
5383 // Fixed point flags
5384 if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
5385 /*Default=*/false))
5386 Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
5387
5388 if (Arg *A = Args.getLastArg(options::OPT_fcxx_abi_EQ))
5389 A->render(Args, CmdArgs);
5390
5391 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
5392 // (-ansi is equivalent to -std=c89 or -std=c++98).
5393 //
5394 // If a std is supplied, only add -trigraphs if it follows the
5395 // option.
5396 bool ImplyVCPPCVer = false;
5397 bool ImplyVCPPCXXVer = false;
5398 const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
5399 if (Std) {
5400 if (Std->getOption().matches(options::OPT_ansi))
5401 if (types::isCXX(InputType))
5402 CmdArgs.push_back("-std=c++98");
5403 else
5404 CmdArgs.push_back("-std=c89");
5405 else
5406 Std->render(Args, CmdArgs);
5407
5408 // If -f(no-)trigraphs appears after the language standard flag, honor it.
5409 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
5410 options::OPT_ftrigraphs,
5411 options::OPT_fno_trigraphs))
5412 if (A != Std)
5413 A->render(Args, CmdArgs);
5414 } else {
5415 // Honor -std-default.
5416 //
5417 // FIXME: Clang doesn't correctly handle -std= when the input language
5418 // doesn't match. For the time being just ignore this for C++ inputs;
5419 // eventually we want to do all the standard defaulting here instead of
5420 // splitting it between the driver and clang -cc1.
5421 if (!types::isCXX(InputType)) {
5422 if (!Args.hasArg(options::OPT__SLASH_std)) {
5423 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
5424 /*Joined=*/true);
5425 } else
5426 ImplyVCPPCVer = true;
5427 }
5428 else if (IsWindowsMSVC)
5429 ImplyVCPPCXXVer = true;
5430
5431 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
5432 options::OPT_fno_trigraphs);
5433
5434 // HIP headers has minimum C++ standard requirements. Therefore set the
5435 // default language standard.
5436 if (IsHIP)
5437 CmdArgs.push_back(IsWindowsMSVC ? "-std=c++14" : "-std=c++11");
5438 }
5439
5440 // GCC's behavior for -Wwrite-strings is a bit strange:
5441 // * In C, this "warning flag" changes the types of string literals from
5442 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
5443 // for the discarded qualifier.
5444 // * In C++, this is just a normal warning flag.
5445 //
5446 // Implementing this warning correctly in C is hard, so we follow GCC's
5447 // behavior for now. FIXME: Directly diagnose uses of a string literal as
5448 // a non-const char* in C, rather than using this crude hack.
5449 if (!types::isCXX(InputType)) {
5450 // FIXME: This should behave just like a warning flag, and thus should also
5451 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
5452 Arg *WriteStrings =
5453 Args.getLastArg(options::OPT_Wwrite_strings,
5454 options::OPT_Wno_write_strings, options::OPT_w);
5455 if (WriteStrings &&
5456 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
5457 CmdArgs.push_back("-fconst-strings");
5458 }
5459
5460 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
5461 // during C++ compilation, which it is by default. GCC keeps this define even
5462 // in the presence of '-w', match this behavior bug-for-bug.
5463 if (types::isCXX(InputType) &&
5464 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
5465 true)) {
5466 CmdArgs.push_back("-fdeprecated-macro");
5467 }
5468
5469 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
5470 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
5471 if (Asm->getOption().matches(options::OPT_fasm))
5472 CmdArgs.push_back("-fgnu-keywords");
5473 else
5474 CmdArgs.push_back("-fno-gnu-keywords");
5475 }
5476
5477 if (ShouldDisableDwarfDirectory(Args, TC))
5478 CmdArgs.push_back("-fno-dwarf-directory-asm");
5479
5480 if (!ShouldEnableAutolink(Args, TC, JA))
5481 CmdArgs.push_back("-fno-autolink");
5482
5483 // Add in -fdebug-compilation-dir if necessary.
5484 addDebugCompDirArg(Args, CmdArgs, D.getVFS());
5485
5486 addDebugPrefixMapArg(D, Args, CmdArgs);
5487
5488 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
5489 options::OPT_ftemplate_depth_EQ)) {
5490 CmdArgs.push_back("-ftemplate-depth");
5491 CmdArgs.push_back(A->getValue());
5492 }
5493
5494 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
5495 CmdArgs.push_back("-foperator-arrow-depth");
5496 CmdArgs.push_back(A->getValue());
5497 }
5498
5499 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
5500 CmdArgs.push_back("-fconstexpr-depth");
5501 CmdArgs.push_back(A->getValue());
5502 }
5503
5504 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
5505 CmdArgs.push_back("-fconstexpr-steps");
5506 CmdArgs.push_back(A->getValue());
5507 }
5508
5509 if (Args.hasArg(options::OPT_fexperimental_new_constant_interpreter))
5510 CmdArgs.push_back("-fexperimental-new-constant-interpreter");
5511
5512 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
5513 CmdArgs.push_back("-fbracket-depth");
5514 CmdArgs.push_back(A->getValue());
5515 }
5516
5517 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
5518 options::OPT_Wlarge_by_value_copy_def)) {
5519 if (A->getNumValues()) {
5520 StringRef bytes = A->getValue();
5521 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
5522 } else
5523 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
5524 }
5525
5526 if (Args.hasArg(options::OPT_relocatable_pch))
5527 CmdArgs.push_back("-relocatable-pch");
5528
5529 if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
5530 static const char *kCFABIs[] = {
5531 "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
5532 };
5533
5534 if (find(kCFABIs, StringRef(A->getValue())) == std::end(kCFABIs))
5535 D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
5536 else
5537 A->render(Args, CmdArgs);
5538 }
5539
5540 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
5541 CmdArgs.push_back("-fconstant-string-class");
5542 CmdArgs.push_back(A->getValue());
5543 }
5544
5545 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
5546 CmdArgs.push_back("-ftabstop");
5547 CmdArgs.push_back(A->getValue());
5548 }
5549
5550 if (Args.hasFlag(options::OPT_fstack_size_section,
5551 options::OPT_fno_stack_size_section, RawTriple.isPS4()))
5552 CmdArgs.push_back("-fstack-size-section");
5553
5554 if (Args.hasArg(options::OPT_fstack_usage)) {
5555 CmdArgs.push_back("-stack-usage-file");
5556
5557 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5558 SmallString<128> OutputFilename(OutputOpt->getValue());
5559 llvm::sys::path::replace_extension(OutputFilename, "su");
5560 CmdArgs.push_back(Args.MakeArgString(OutputFilename));
5561 } else
5562 CmdArgs.push_back(
5563 Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".su"));
5564 }
5565
5566 CmdArgs.push_back("-ferror-limit");
5567 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
5568 CmdArgs.push_back(A->getValue());
5569 else
5570 CmdArgs.push_back("19");
5571
5572 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
5573 CmdArgs.push_back("-fmacro-backtrace-limit");
5574 CmdArgs.push_back(A->getValue());
5575 }
5576
5577 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
5578 CmdArgs.push_back("-ftemplate-backtrace-limit");
5579 CmdArgs.push_back(A->getValue());
5580 }
5581
5582 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
5583 CmdArgs.push_back("-fconstexpr-backtrace-limit");
5584 CmdArgs.push_back(A->getValue());
5585 }
5586
5587 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
5588 CmdArgs.push_back("-fspell-checking-limit");
5589 CmdArgs.push_back(A->getValue());
5590 }
5591
5592 // Pass -fmessage-length=.
5593 unsigned MessageLength = 0;
5594 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
5595 StringRef V(A->getValue());
5596 if (V.getAsInteger(0, MessageLength))
5597 D.Diag(diag::err_drv_invalid_argument_to_option)
5598 << V << A->getOption().getName();
5599 } else {
5600 // If -fmessage-length=N was not specified, determine whether this is a
5601 // terminal and, if so, implicitly define -fmessage-length appropriately.
5602 MessageLength = llvm::sys::Process::StandardErrColumns();
5603 }
5604 if (MessageLength != 0)
5605 CmdArgs.push_back(
5606 Args.MakeArgString("-fmessage-length=" + Twine(MessageLength)));
5607
5608 // -fvisibility= and -fvisibility-ms-compat are of a piece.
5609 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
5610 options::OPT_fvisibility_ms_compat)) {
5611 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
5612 CmdArgs.push_back("-fvisibility");
5613 CmdArgs.push_back(A->getValue());
5614 } else {
5615 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
5616 CmdArgs.push_back("-fvisibility");
5617 CmdArgs.push_back("hidden");
5618 CmdArgs.push_back("-ftype-visibility");
5619 CmdArgs.push_back("default");
5620 }
5621 }
5622
5623 if (!RawTriple.isPS4())
5624 if (const Arg *A =
5625 Args.getLastArg(options::OPT_fvisibility_from_dllstorageclass,
5626 options::OPT_fno_visibility_from_dllstorageclass)) {
5627 if (A->getOption().matches(
5628 options::OPT_fvisibility_from_dllstorageclass)) {
5629 CmdArgs.push_back("-fvisibility-from-dllstorageclass");
5630 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_dllexport_EQ);
5631 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_nodllstorageclass_EQ);
5632 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_externs_dllimport_EQ);
5633 Args.AddLastArg(CmdArgs,
5634 options::OPT_fvisibility_externs_nodllstorageclass_EQ);
5635 }
5636 }
5637
5638 if (const Arg *A = Args.getLastArg(options::OPT_mignore_xcoff_visibility)) {
5639 if (Triple.isOSAIX())
5640 CmdArgs.push_back("-mignore-xcoff-visibility");
5641 else
5642 D.Diag(diag::err_drv_unsupported_opt_for_target)
5643 << A->getAsString(Args) << TripleStr;
5644 }
5645
5646 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
5647 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden_static_local_var,
5648 options::OPT_fno_visibility_inlines_hidden_static_local_var);
5649 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
5650
5651 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
5652
5653 // Forward -f (flag) options which we can pass directly.
5654 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
5655 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
5656 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
5657 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
5658 Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
5659 options::OPT_fno_emulated_tls);
5660
5661 // AltiVec-like language extensions aren't relevant for assembling.
5662 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
5663 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
5664
5665 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
5666 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
5667
5668 // Forward flags for OpenMP. We don't do this if the current action is an
5669 // device offloading action other than OpenMP.
5670 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
5671 options::OPT_fno_openmp, false) &&
5672 (JA.isDeviceOffloading(Action::OFK_None) ||
5673 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
5674 switch (D.getOpenMPRuntime(Args)) {
5675 case Driver::OMPRT_OMP:
5676 case Driver::OMPRT_IOMP5:
5677 // Clang can generate useful OpenMP code for these two runtime libraries.
5678 CmdArgs.push_back("-fopenmp");
5679
5680 // If no option regarding the use of TLS in OpenMP codegeneration is
5681 // given, decide a default based on the target. Otherwise rely on the
5682 // options and pass the right information to the frontend.
5683 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
5684 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
5685 CmdArgs.push_back("-fnoopenmp-use-tls");
5686 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
5687 options::OPT_fno_openmp_simd);
5688 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_enable_irbuilder);
5689 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
5690 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
5691 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
5692 Args.AddAllArgs(CmdArgs,
5693 options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
5694 if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
5695 options::OPT_fno_openmp_optimistic_collapse,
5696 /*Default=*/false))
5697 CmdArgs.push_back("-fopenmp-optimistic-collapse");
5698
5699 // When in OpenMP offloading mode with NVPTX target, forward
5700 // cuda-mode flag
5701 if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
5702 options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
5703 CmdArgs.push_back("-fopenmp-cuda-mode");
5704
5705 // When in OpenMP offloading mode with NVPTX target, forward
5706 // cuda-parallel-target-regions flag
5707 if (Args.hasFlag(options::OPT_fopenmp_cuda_parallel_target_regions,
5708 options::OPT_fno_openmp_cuda_parallel_target_regions,
5709 /*Default=*/true))
5710 CmdArgs.push_back("-fopenmp-cuda-parallel-target-regions");
5711
5712 // When in OpenMP offloading mode with NVPTX target, check if full runtime
5713 // is required.
5714 if (Args.hasFlag(options::OPT_fopenmp_cuda_force_full_runtime,
5715 options::OPT_fno_openmp_cuda_force_full_runtime,
5716 /*Default=*/false))
5717 CmdArgs.push_back("-fopenmp-cuda-force-full-runtime");
5718 break;
5719 default:
5720 // By default, if Clang doesn't know how to generate useful OpenMP code
5721 // for a specific runtime library, we just don't pass the '-fopenmp' flag
5722 // down to the actual compilation.
5723 // FIXME: It would be better to have a mode which *only* omits IR
5724 // generation based on the OpenMP support so that we get consistent
5725 // semantic analysis, etc.
5726 break;
5727 }
5728 } else {
5729 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
5730 options::OPT_fno_openmp_simd);
5731 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
5732 }
5733
5734 const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
5735 Sanitize.addArgs(TC, Args, CmdArgs, InputType);
5736
5737 const XRayArgs &XRay = TC.getXRayArgs();
5738 XRay.addArgs(TC, Args, CmdArgs, InputType);
5739
5740 for (const auto &Filename :
5741 Args.getAllArgValues(options::OPT_fprofile_list_EQ)) {
5742 if (D.getVFS().exists(Filename))
5743 CmdArgs.push_back(Args.MakeArgString("-fprofile-list=" + Filename));
5744 else
5745 D.Diag(clang::diag::err_drv_no_such_file) << Filename;
5746 }
5747
5748 if (Arg *A = Args.getLastArg(options::OPT_fpatchable_function_entry_EQ)) {
5749 StringRef S0 = A->getValue(), S = S0;
5750 unsigned Size, Offset = 0;
5751 if (!Triple.isAArch64() && !Triple.isRISCV() && !Triple.isX86())
5752 D.Diag(diag::err_drv_unsupported_opt_for_target)
5753 << A->getAsString(Args) << TripleStr;
5754 else if (S.consumeInteger(10, Size) ||
5755 (!S.empty() && (!S.consume_front(",") ||
5756 S.consumeInteger(10, Offset) || !S.empty())))
5757 D.Diag(diag::err_drv_invalid_argument_to_option)
5758 << S0 << A->getOption().getName();
5759 else if (Size < Offset)
5760 D.Diag(diag::err_drv_unsupported_fpatchable_function_entry_argument);
5761 else {
5762 CmdArgs.push_back(Args.MakeArgString(A->getSpelling() + Twine(Size)));
5763 CmdArgs.push_back(Args.MakeArgString(
5764 "-fpatchable-function-entry-offset=" + Twine(Offset)));
5765 }
5766 }
5767
5768 if (TC.SupportsProfiling()) {
5769 Args.AddLastArg(CmdArgs, options::OPT_pg);
5770
5771 llvm::Triple::ArchType Arch = TC.getArch();
5772 if (Arg *A = Args.getLastArg(options::OPT_mfentry)) {
5773 if (Arch == llvm::Triple::systemz || TC.getTriple().isX86())
5774 A->render(Args, CmdArgs);
5775 else
5776 D.Diag(diag::err_drv_unsupported_opt_for_target)
5777 << A->getAsString(Args) << TripleStr;
5778 }
5779 if (Arg *A = Args.getLastArg(options::OPT_mnop_mcount)) {
5780 if (Arch == llvm::Triple::systemz)
5781 A->render(Args, CmdArgs);
5782 else
5783 D.Diag(diag::err_drv_unsupported_opt_for_target)
5784 << A->getAsString(Args) << TripleStr;
5785 }
5786 if (Arg *A = Args.getLastArg(options::OPT_mrecord_mcount)) {
5787 if (Arch == llvm::Triple::systemz)
5788 A->render(Args, CmdArgs);
5789 else
5790 D.Diag(diag::err_drv_unsupported_opt_for_target)
5791 << A->getAsString(Args) << TripleStr;
5792 }
5793 }
5794
5795 if (Args.getLastArg(options::OPT_fapple_kext) ||
5796 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
5797 CmdArgs.push_back("-fapple-kext");
5798
5799 Args.AddLastArg(CmdArgs, options::OPT_flax_vector_conversions_EQ);
5800 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
5801 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
5802 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
5803 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
5804 Args.AddLastArg(CmdArgs, options::OPT_ftime_report_EQ);
5805 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace);
5806 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);
5807 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
5808 Args.AddLastArg(CmdArgs, options::OPT_malign_double);
5809 Args.AddLastArg(CmdArgs, options::OPT_fno_temp_file);
5810
5811 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
5812 CmdArgs.push_back("-ftrapv-handler");
5813 CmdArgs.push_back(A->getValue());
5814 }
5815
5816 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
5817
5818 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
5819 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
5820 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
5821 if (A->getOption().matches(options::OPT_fwrapv))
5822 CmdArgs.push_back("-fwrapv");
5823 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
5824 options::OPT_fno_strict_overflow)) {
5825 if (A->getOption().matches(options::OPT_fno_strict_overflow))
5826 CmdArgs.push_back("-fwrapv");
5827 }
5828
5829 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
5830 options::OPT_fno_reroll_loops))
5831 if (A->getOption().matches(options::OPT_freroll_loops))
5832 CmdArgs.push_back("-freroll-loops");
5833
5834 Args.AddLastArg(CmdArgs, options::OPT_ffinite_loops,
5835 options::OPT_fno_finite_loops);
5836
5837 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
5838 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
5839 options::OPT_fno_unroll_loops);
5840
5841 Args.AddLastArg(CmdArgs, options::OPT_pthread);
5842
5843 if (Args.hasFlag(options::OPT_mspeculative_load_hardening,
5844 options::OPT_mno_speculative_load_hardening, false))
5845 CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening"));
5846
5847 RenderSSPOptions(D, TC, Args, CmdArgs, KernelOrKext);
5848 RenderSCPOptions(TC, Args, CmdArgs);
5849 RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
5850
5851 // Translate -mstackrealign
5852 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
5853 false))
5854 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
5855
5856 if (Args.hasArg(options::OPT_mstack_alignment)) {
5857 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
5858 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
5859 }
5860
5861 if (Args.hasArg(options::OPT_mstack_probe_size)) {
5862 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
5863
5864 if (!Size.empty())
5865 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
5866 else
5867 CmdArgs.push_back("-mstack-probe-size=0");
5868 }
5869
5870 if (!Args.hasFlag(options::OPT_mstack_arg_probe,
5871 options::OPT_mno_stack_arg_probe, true))
5872 CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
5873
5874 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
5875 options::OPT_mno_restrict_it)) {
5876 if (A->getOption().matches(options::OPT_mrestrict_it)) {
5877 CmdArgs.push_back("-mllvm");
5878 CmdArgs.push_back("-arm-restrict-it");
5879 } else {
5880 CmdArgs.push_back("-mllvm");
5881 CmdArgs.push_back("-arm-no-restrict-it");
5882 }
5883 } else if (Triple.isOSWindows() &&
5884 (Triple.getArch() == llvm::Triple::arm ||
5885 Triple.getArch() == llvm::Triple::thumb)) {
5886 // Windows on ARM expects restricted IT blocks
5887 CmdArgs.push_back("-mllvm");
5888 CmdArgs.push_back("-arm-restrict-it");
5889 }
5890
5891 // Forward -cl options to -cc1
5892 RenderOpenCLOptions(Args, CmdArgs, InputType);
5893
5894 if (IsHIP) {
5895 if (Args.hasFlag(options::OPT_fhip_new_launch_api,
5896 options::OPT_fno_hip_new_launch_api, true))
5897 CmdArgs.push_back("-fhip-new-launch-api");
5898 if (Args.hasFlag(options::OPT_fgpu_allow_device_init,
5899 options::OPT_fno_gpu_allow_device_init, false))
5900 CmdArgs.push_back("-fgpu-allow-device-init");
5901 }
5902
5903 if (IsCuda || IsHIP) {
5904 if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
5905 CmdArgs.push_back("-fgpu-rdc");
5906 if (Args.hasFlag(options::OPT_fgpu_defer_diag,
5907 options::OPT_fno_gpu_defer_diag, false))
5908 CmdArgs.push_back("-fgpu-defer-diag");
5909 if (Args.hasFlag(options::OPT_fgpu_exclude_wrong_side_overloads,
5910 options::OPT_fno_gpu_exclude_wrong_side_overloads,
5911 false)) {
5912 CmdArgs.push_back("-fgpu-exclude-wrong-side-overloads");
5913 CmdArgs.push_back("-fgpu-defer-diag");
5914 }
5915 }
5916
5917 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
5918 CmdArgs.push_back(
5919 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
5920 }
5921
5922 // Forward -f options with positive and negative forms; we translate these by
5923 // hand. Do not propagate PGO options to the GPU-side compilations as the
5924 // profile info is for the host-side compilation only.
5925 if (!(IsCudaDevice || IsHIPDevice)) {
5926 if (Arg *A = getLastProfileSampleUseArg(Args)) {
5927 auto *PGOArg = Args.getLastArg(
5928 options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,
5929 options::OPT_fcs_profile_generate,
5930 options::OPT_fcs_profile_generate_EQ, options::OPT_fprofile_use,
5931 options::OPT_fprofile_use_EQ);
5932 if (PGOArg)
5933 D.Diag(diag::err_drv_argument_not_allowed_with)
5934 << "SampleUse with PGO options";
5935
5936 StringRef fname = A->getValue();
5937 if (!llvm::sys::fs::exists(fname))
5938 D.Diag(diag::err_drv_no_such_file) << fname;
5939 else
5940 A->render(Args, CmdArgs);
5941 }
5942 Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
5943
5944 if (Args.hasFlag(options::OPT_fpseudo_probe_for_profiling,
5945 options::OPT_fno_pseudo_probe_for_profiling, false))
5946 CmdArgs.push_back("-fpseudo-probe-for-profiling");
5947 }
5948 RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
5949
5950 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
5951 options::OPT_fno_assume_sane_operator_new))
5952 CmdArgs.push_back("-fno-assume-sane-operator-new");
5953
5954 // -fblocks=0 is default.
5955 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
5956 TC.IsBlocksDefault()) ||
5957 (Args.hasArg(options::OPT_fgnu_runtime) &&
5958 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
5959 !Args.hasArg(options::OPT_fno_blocks))) {
5960 CmdArgs.push_back("-fblocks");
5961
5962 if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
5963 CmdArgs.push_back("-fblocks-runtime-optional");
5964 }
5965
5966 // -fencode-extended-block-signature=1 is default.
5967 if (TC.IsEncodeExtendedBlockSignatureDefault())
5968 CmdArgs.push_back("-fencode-extended-block-signature");
5969
5970 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
5971 false) &&
5972 types::isCXX(InputType)) {
5973 CmdArgs.push_back("-fcoroutines-ts");
5974 }
5975
5976 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
5977 options::OPT_fno_double_square_bracket_attributes);
5978
5979 // -faccess-control is default.
5980 if (Args.hasFlag(options::OPT_fno_access_control,
5981 options::OPT_faccess_control, false))
5982 CmdArgs.push_back("-fno-access-control");
5983
5984 // -felide-constructors is the default.
5985 if (Args.hasFlag(options::OPT_fno_elide_constructors,
5986 options::OPT_felide_constructors, false))
5987 CmdArgs.push_back("-fno-elide-constructors");
5988
5989 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
5990
5991 if (KernelOrKext || (types::isCXX(InputType) &&
5992 (RTTIMode == ToolChain::RM_Disabled)))
5993 CmdArgs.push_back("-fno-rtti");
5994
5995 // -fshort-enums=0 is default for all architectures except Hexagon and z/OS.
5996 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
5997 TC.getArch() == llvm::Triple::hexagon || Triple.isOSzOS()))
5998 CmdArgs.push_back("-fshort-enums");
5999
6000 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
6001
6002 // -fuse-cxa-atexit is default.
6003 if (!Args.hasFlag(
6004 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
6005 !RawTriple.isOSAIX() && !RawTriple.isOSWindows() &&
6006 TC.getArch() != llvm::Triple::xcore &&
6007 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
6008 RawTriple.hasEnvironment())) ||
6009 KernelOrKext)
6010 CmdArgs.push_back("-fno-use-cxa-atexit");
6011
6012 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
6013 options::OPT_fno_register_global_dtors_with_atexit,
6014 RawTriple.isOSDarwin() && !KernelOrKext))
6015 CmdArgs.push_back("-fregister-global-dtors-with-atexit");
6016
6017 // -fno-use-line-directives is default.
6018 if (Args.hasFlag(options::OPT_fuse_line_directives,
6019 options::OPT_fno_use_line_directives, false))
6020 CmdArgs.push_back("-fuse-line-directives");
6021
6022 // -fms-extensions=0 is default.
6023 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
6024 IsWindowsMSVC))
6025 CmdArgs.push_back("-fms-extensions");
6026
6027 // -fms-compatibility=0 is default.
6028 bool IsMSVCCompat = Args.hasFlag(
6029 options::OPT_fms_compatibility, options::OPT_fno_ms_compatibility,
6030 (IsWindowsMSVC && Args.hasFlag(options::OPT_fms_extensions,
6031 options::OPT_fno_ms_extensions, true)));
6032 if (IsMSVCCompat)
6033 CmdArgs.push_back("-fms-compatibility");
6034
6035 // Handle -fgcc-version, if present.
6036 VersionTuple GNUCVer;
6037 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {
6038 // Check that the version has 1 to 3 components and the minor and patch
6039 // versions fit in two decimal digits.
6040 StringRef Val = A->getValue();
6041 Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable.
6042 bool Invalid = GNUCVer.tryParse(Val);
6043 unsigned Minor = GNUCVer.getMinor().getValueOr(0);
6044 unsigned Patch = GNUCVer.getSubminor().getValueOr(0);
6045 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
6046 D.Diag(diag::err_drv_invalid_value)
6047 << A->getAsString(Args) << A->getValue();
6048 }
6049 } else if (!IsMSVCCompat) {
6050 // Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect.
6051 GNUCVer = VersionTuple(4, 2, 1);
6052 }
6053 if (!GNUCVer.empty()) {
6054 CmdArgs.push_back(
6055 Args.MakeArgString("-fgnuc-version=" + GNUCVer.getAsString()));
6056 }
6057
6058 VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
6059 if (!MSVT.empty())
6060 CmdArgs.push_back(
6061 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
6062
6063 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
6064 if (ImplyVCPPCVer) {
6065 StringRef LanguageStandard;
6066 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
6067 Std = StdArg;
6068 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
6069 .Case("c11", "-std=c11")
6070 .Case("c17", "-std=c17")
6071 .Default("");
6072 if (LanguageStandard.empty())
6073 D.Diag(clang::diag::warn_drv_unused_argument)
6074 << StdArg->getAsString(Args);
6075 }
6076 CmdArgs.push_back(LanguageStandard.data());
6077 }
6078 if (ImplyVCPPCXXVer) {
6079 StringRef LanguageStandard;
6080 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
6081 Std = StdArg;
6082 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
6083 .Case("c++14", "-std=c++14")
6084 .Case("c++17", "-std=c++17")
6085 .Case("c++latest", "-std=c++20")
6086 .Default("");
6087 if (LanguageStandard.empty())
6088 D.Diag(clang::diag::warn_drv_unused_argument)
6089 << StdArg->getAsString(Args);
6090 }
6091
6092 if (LanguageStandard.empty()) {
6093 if (IsMSVC2015Compatible)
6094 LanguageStandard = "-std=c++14";
6095 else
6096 LanguageStandard = "-std=c++11";
6097 }
6098
6099 CmdArgs.push_back(LanguageStandard.data());
6100 }
6101
6102 // -fno-borland-extensions is default.
6103 if (Args.hasFlag(options::OPT_fborland_extensions,
6104 options::OPT_fno_borland_extensions, false))
6105 CmdArgs.push_back("-fborland-extensions");
6106
6107 // -fno-declspec is default, except for PS4.
6108 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
6109 RawTriple.isPS4()))
6110 CmdArgs.push_back("-fdeclspec");
6111 else if (Args.hasArg(options::OPT_fno_declspec))
6112 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
6113
6114 // -fthreadsafe-static is default, except for MSVC compatibility versions less
6115 // than 19.
6116 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
6117 options::OPT_fno_threadsafe_statics,
6118 !IsWindowsMSVC || IsMSVC2015Compatible))
6119 CmdArgs.push_back("-fno-threadsafe-statics");
6120
6121 // -fno-delayed-template-parsing is default, except when targeting MSVC.
6122 // Many old Windows SDK versions require this to parse.
6123 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
6124 // compiler. We should be able to disable this by default at some point.
6125 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
6126 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
6127 CmdArgs.push_back("-fdelayed-template-parsing");
6128
6129 // -fgnu-keywords default varies depending on language; only pass if
6130 // specified.
6131 Args.AddLastArg(CmdArgs, options::OPT_fgnu_keywords,
6132 options::OPT_fno_gnu_keywords);
6133
6134 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
6135 false))
6136 CmdArgs.push_back("-fgnu89-inline");
6137
6138 if (Args.hasArg(options::OPT_fno_inline))
6139 CmdArgs.push_back("-fno-inline");
6140
6141 Args.AddLastArg(CmdArgs, options::OPT_finline_functions,
6142 options::OPT_finline_hint_functions,
6143 options::OPT_fno_inline_functions);
6144
6145 // FIXME: Find a better way to determine whether the language has modules
6146 // support by default, or just assume that all languages do.
6147 bool HaveModules =
6148 Std && (Std->containsValue("c++2a") || Std->containsValue("c++20") ||
6149 Std->containsValue("c++latest"));
6150 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
6151
6152 if (Args.hasFlag(options::OPT_fpch_validate_input_files_content,
6153 options::OPT_fno_pch_validate_input_files_content, false))
6154 CmdArgs.push_back("-fvalidate-ast-input-files-content");
6155 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
6156 options::OPT_fno_pch_instantiate_templates, false))
6157 CmdArgs.push_back("-fpch-instantiate-templates");
6158 if (Args.hasFlag(options::OPT_fpch_codegen, options::OPT_fno_pch_codegen,
6159 false))
6160 CmdArgs.push_back("-fmodules-codegen");
6161 if (Args.hasFlag(options::OPT_fpch_debuginfo, options::OPT_fno_pch_debuginfo,
6162 false))
6163 CmdArgs.push_back("-fmodules-debuginfo");
6164
6165 Args.AddLastArg(CmdArgs, options::OPT_flegacy_pass_manager,
6166 options::OPT_fno_legacy_pass_manager);
6167
6168 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, Inputs, CmdArgs, rewriteKind);
6169 RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
6170 Input, CmdArgs);
6171
6172 if (types::isObjC(Input.getType()) &&
6173 Args.hasFlag(options::OPT_fobjc_encode_cxx_class_template_spec,
6174 options::OPT_fno_objc_encode_cxx_class_template_spec,
6175 !Runtime.isNeXTFamily()))
6176 CmdArgs.push_back("-fobjc-encode-cxx-class-template-spec");
6177
6178 if (Args.hasFlag(options::OPT_fapplication_extension,
6179 options::OPT_fno_application_extension, false))
6180 CmdArgs.push_back("-fapplication-extension");
6181
6182 // Handle GCC-style exception args.
6183 bool EH = false;
6184 if (!C.getDriver().IsCLMode())
6185 EH = addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
6186
6187 // Handle exception personalities
6188 Arg *A = Args.getLastArg(
6189 options::OPT_fsjlj_exceptions, options::OPT_fseh_exceptions,
6190 options::OPT_fdwarf_exceptions, options::OPT_fwasm_exceptions);
6191 if (A) {
6192 const Option &Opt = A->getOption();
6193 if (Opt.matches(options::OPT_fsjlj_exceptions))
6194 CmdArgs.push_back("-exception-model=sjlj");
6195 if (Opt.matches(options::OPT_fseh_exceptions))
6196 CmdArgs.push_back("-exception-model=seh");
6197 if (Opt.matches(options::OPT_fdwarf_exceptions))
6198 CmdArgs.push_back("-exception-model=dwarf");
6199 if (Opt.matches(options::OPT_fwasm_exceptions))
6200 CmdArgs.push_back("-exception-model=wasm");
6201 } else {
6202 switch (TC.GetExceptionModel(Args)) {
6203 default:
6204 break;
6205 case llvm::ExceptionHandling::DwarfCFI:
6206 CmdArgs.push_back("-exception-model=dwarf");
6207 break;
6208 case llvm::ExceptionHandling::SjLj:
6209 CmdArgs.push_back("-exception-model=sjlj");
6210 break;
6211 case llvm::ExceptionHandling::WinEH:
6212 CmdArgs.push_back("-exception-model=seh");
6213 break;
6214 }
6215 }
6216
6217 // C++ "sane" operator new.
6218 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
6219 options::OPT_fno_assume_sane_operator_new))
6220 CmdArgs.push_back("-fno-assume-sane-operator-new");
6221
6222 // -frelaxed-template-template-args is off by default, as it is a severe
6223 // breaking change until a corresponding change to template partial ordering
6224 // is provided.
6225 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
6226 options::OPT_fno_relaxed_template_template_args, false))
6227 CmdArgs.push_back("-frelaxed-template-template-args");
6228
6229 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
6230 // most platforms.
6231 if (Args.hasFlag(options::OPT_fsized_deallocation,
6232 options::OPT_fno_sized_deallocation, false))
6233 CmdArgs.push_back("-fsized-deallocation");
6234
6235 // -faligned-allocation is on by default in C++17 onwards and otherwise off
6236 // by default.
6237 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
6238 options::OPT_fno_aligned_allocation,
6239 options::OPT_faligned_new_EQ)) {
6240 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
6241 CmdArgs.push_back("-fno-aligned-allocation");
6242 else
6243 CmdArgs.push_back("-faligned-allocation");
6244 }
6245
6246 // The default new alignment can be specified using a dedicated option or via
6247 // a GCC-compatible option that also turns on aligned allocation.
6248 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
6249 options::OPT_faligned_new_EQ))
6250 CmdArgs.push_back(
6251 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
6252
6253 // -fconstant-cfstrings is default, and may be subject to argument translation
6254 // on Darwin.
6255 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
6256 options::OPT_fno_constant_cfstrings) ||
6257 !Args.hasFlag(options::OPT_mconstant_cfstrings,
6258 options::OPT_mno_constant_cfstrings))
6259 CmdArgs.push_back("-fno-constant-cfstrings");
6260
6261 // -fno-pascal-strings is default, only pass non-default.
6262 if (Args.hasFlag(options::OPT_fpascal_strings,
6263 options::OPT_fno_pascal_strings, false))
6264 CmdArgs.push_back("-fpascal-strings");
6265
6266 // Honor -fpack-struct= and -fpack-struct, if given. Note that
6267 // -fno-pack-struct doesn't apply to -fpack-struct=.
6268 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
6269 std::string PackStructStr = "-fpack-struct=";
6270 PackStructStr += A->getValue();
6271 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
6272 } else if (Args.hasFlag(options::OPT_fpack_struct,
6273 options::OPT_fno_pack_struct, false)) {
6274 CmdArgs.push_back("-fpack-struct=1");
6275 }
6276
6277 // Handle -fmax-type-align=N and -fno-type-align
6278 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
6279 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
6280 if (!SkipMaxTypeAlign) {
6281 std::string MaxTypeAlignStr = "-fmax-type-align=";
6282 MaxTypeAlignStr += A->getValue();
6283 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
6284 }
6285 } else if (RawTriple.isOSDarwin()) {
6286 if (!SkipMaxTypeAlign) {
6287 std::string MaxTypeAlignStr = "-fmax-type-align=16";
6288 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
6289 }
6290 }
6291
6292 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
6293 CmdArgs.push_back("-Qn");
6294
6295 // -fno-common is the default, set -fcommon only when that flag is set.
6296 if (Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common, false))
6297 CmdArgs.push_back("-fcommon");
6298
6299 // -fsigned-bitfields is default, and clang doesn't yet support
6300 // -funsigned-bitfields.
6301 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
6302 options::OPT_funsigned_bitfields))
6303 D.Diag(diag::warn_drv_clang_unsupported)
6304 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
6305
6306 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
6307 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
6308 D.Diag(diag::err_drv_clang_unsupported)
6309 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
6310
6311 // -finput_charset=UTF-8 is default. Reject others
6312 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
6313 StringRef value = inputCharset->getValue();
6314 if (!value.equals_lower("utf-8"))
6315 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
6316 << value;
6317 }
6318
6319 // -fexec_charset=UTF-8 is default. Reject others
6320 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
6321 StringRef value = execCharset->getValue();
6322 if (!value.equals_lower("utf-8"))
6323 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
6324 << value;
6325 }
6326
6327 RenderDiagnosticsOptions(D, Args, CmdArgs);
6328
6329 // -fno-asm-blocks is default.
6330 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
6331 false))
6332 CmdArgs.push_back("-fasm-blocks");
6333
6334 // -fgnu-inline-asm is default.
6335 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
6336 options::OPT_fno_gnu_inline_asm, true))
6337 CmdArgs.push_back("-fno-gnu-inline-asm");
6338
6339 // Enable vectorization per default according to the optimization level
6340 // selected. For optimization levels that want vectorization we use the alias
6341 // option to simplify the hasFlag logic.
6342 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
6343 OptSpecifier VectorizeAliasOption =
6344 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
6345 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
6346 options::OPT_fno_vectorize, EnableVec))
6347 CmdArgs.push_back("-vectorize-loops");
6348
6349 // -fslp-vectorize is enabled based on the optimization level selected.
6350 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
6351 OptSpecifier SLPVectAliasOption =
6352 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
6353 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
6354 options::OPT_fno_slp_vectorize, EnableSLPVec))
6355 CmdArgs.push_back("-vectorize-slp");
6356
6357 ParseMPreferVectorWidth(D, Args, CmdArgs);
6358
6359 Args.AddLastArg(CmdArgs, options::OPT_fshow_overloads_EQ);
6360 Args.AddLastArg(CmdArgs,
6361 options::OPT_fsanitize_undefined_strip_path_components_EQ);
6362
6363 // -fdollars-in-identifiers default varies depending on platform and
6364 // language; only pass if specified.
6365 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
6366 options::OPT_fno_dollars_in_identifiers)) {
6367 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
6368 CmdArgs.push_back("-fdollars-in-identifiers");
6369 else
6370 CmdArgs.push_back("-fno-dollars-in-identifiers");
6371 }
6372
6373 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
6374 // practical purposes.
6375 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
6376 options::OPT_fno_unit_at_a_time)) {
6377 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
6378 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
6379 }
6380
6381 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
6382 options::OPT_fno_apple_pragma_pack, false))
6383 CmdArgs.push_back("-fapple-pragma-pack");
6384
6385 if (Args.hasFlag(options::OPT_fxl_pragma_pack,
6386 options::OPT_fno_xl_pragma_pack, RawTriple.isOSAIX()))
6387 CmdArgs.push_back("-fxl-pragma-pack");
6388
6389 // Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
6390 if (willEmitRemarks(Args) && checkRemarksOptions(D, Args, Triple))
6391 renderRemarksOptions(Args, CmdArgs, Triple, Input, Output, JA);
6392
6393 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
6394 options::OPT_fno_rewrite_imports, false);
6395 if (RewriteImports)
6396 CmdArgs.push_back("-frewrite-imports");
6397
6398 // Enable rewrite includes if the user's asked for it or if we're generating
6399 // diagnostics.
6400 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
6401 // nice to enable this when doing a crashdump for modules as well.
6402 if (Args.hasFlag(options::OPT_frewrite_includes,
6403 options::OPT_fno_rewrite_includes, false) ||
6404 (C.isForDiagnostics() && !HaveModules))
6405 CmdArgs.push_back("-frewrite-includes");
6406
6407 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
6408 if (Arg *A = Args.getLastArg(options::OPT_traditional,
6409 options::OPT_traditional_cpp)) {
6410 if (isa<PreprocessJobAction>(JA))
6411 CmdArgs.push_back("-traditional-cpp");
6412 else
6413 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
6414 }
6415
6416 Args.AddLastArg(CmdArgs, options::OPT_dM);
6417 Args.AddLastArg(CmdArgs, options::OPT_dD);
6418
6419 Args.AddLastArg(CmdArgs, options::OPT_fmax_tokens_EQ);
6420
6421 // Handle serialized diagnostics.
6422 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
6423 CmdArgs.push_back("-serialize-diagnostic-file");
6424 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
6425 }
6426
6427 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
6428 CmdArgs.push_back("-fretain-comments-from-system-headers");
6429
6430 // Forward -fcomment-block-commands to -cc1.
6431 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
6432 // Forward -fparse-all-comments to -cc1.
6433 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
6434
6435 // Turn -fplugin=name.so into -load name.so
6436 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
6437 CmdArgs.push_back("-load");
6438 CmdArgs.push_back(A->getValue());
6439 A->claim();
6440 }
6441
6442 // Forward -fpass-plugin=name.so to -cc1.
6443 for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {
6444 CmdArgs.push_back(
6445 Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));
6446 A->claim();
6447 }
6448
6449 // Setup statistics file output.
6450 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
6451 if (!StatsFile.empty())
6452 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
6453
6454 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
6455 // parser.
6456 // -finclude-default-header flag is for preprocessor,
6457 // do not pass it to other cc1 commands when save-temps is enabled
6458 if (C.getDriver().isSaveTempsEnabled() &&
6459 !isa<PreprocessJobAction>(JA)) {
6460 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
6461 Arg->claim();
6462 if (StringRef(Arg->getValue()) != "-finclude-default-header")
6463 CmdArgs.push_back(Arg->getValue());
6464 }
6465 }
6466 else {
6467 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
6468 }
6469 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
6470 A->claim();
6471
6472 // We translate this by hand to the -cc1 argument, since nightly test uses
6473 // it and developers have been trained to spell it with -mllvm. Both
6474 // spellings are now deprecated and should be removed.
6475 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
6476 CmdArgs.push_back("-disable-llvm-optzns");
6477 } else {
6478 A->render(Args, CmdArgs);
6479 }
6480 }
6481
6482 // With -save-temps, we want to save the unoptimized bitcode output from the
6483 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
6484 // by the frontend.
6485 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
6486 // has slightly different breakdown between stages.
6487 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
6488 // pristine IR generated by the frontend. Ideally, a new compile action should
6489 // be added so both IR can be captured.
6490 if ((C.getDriver().isSaveTempsEnabled() ||
6491 JA.isHostOffloading(Action::OFK_OpenMP)) &&
6492 !(C.getDriver().embedBitcodeInObject() && !IsUsingLTO) &&
6493 isa<CompileJobAction>(JA))
6494 CmdArgs.push_back("-disable-llvm-passes");
6495
6496 Args.AddAllArgs(CmdArgs, options::OPT_undef);
6497
6498 const char *Exec = D.getClangProgramPath();
6499
6500 // Optionally embed the -cc1 level arguments into the debug info or a
6501 // section, for build analysis.
6502 // Also record command line arguments into the debug info if
6503 // -grecord-gcc-switches options is set on.
6504 // By default, -gno-record-gcc-switches is set on and no recording.
6505 auto GRecordSwitches =
6506 Args.hasFlag(options::OPT_grecord_command_line,
6507 options::OPT_gno_record_command_line, false);
6508 auto FRecordSwitches =
6509 Args.hasFlag(options::OPT_frecord_command_line,
6510 options::OPT_fno_record_command_line, false);
6511 if (FRecordSwitches && !Triple.isOSBinFormatELF())
6512 D.Diag(diag::err_drv_unsupported_opt_for_target)
6513 << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
6514 << TripleStr;
6515 if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
6516 ArgStringList OriginalArgs;
6517 for (const auto &Arg : Args)
6518 Arg->render(Args, OriginalArgs);
6519
6520 SmallString<256> Flags;
6521 EscapeSpacesAndBackslashes(Exec, Flags);
6522 for (const char *OriginalArg : OriginalArgs) {
6523 SmallString<128> EscapedArg;
6524 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
6525 Flags += " ";
6526 Flags += EscapedArg;
6527 }
6528 auto FlagsArgString = Args.MakeArgString(Flags);
6529 if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
6530 CmdArgs.push_back("-dwarf-debug-flags");
6531 CmdArgs.push_back(FlagsArgString);
6532 }
6533 if (FRecordSwitches) {
6534 CmdArgs.push_back("-record-command-line");
6535 CmdArgs.push_back(FlagsArgString);
6536 }
6537 }
6538
6539 // Host-side cuda compilation receives all device-side outputs in a single
6540 // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
6541 if ((IsCuda || IsHIP) && CudaDeviceInput) {
6542 CmdArgs.push_back("-fcuda-include-gpubinary");
6543 CmdArgs.push_back(CudaDeviceInput->getFilename());
6544 if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
6545 CmdArgs.push_back("-fgpu-rdc");
6546 }
6547
6548 if (IsCuda) {
6549 if (Args.hasFlag(options::OPT_fcuda_short_ptr,
6550 options::OPT_fno_cuda_short_ptr, false))
6551 CmdArgs.push_back("-fcuda-short-ptr");
6552 }
6553
6554 if (IsCuda || IsHIP) {
6555 // Determine the original source input.
6556 const Action *SourceAction = &JA;
6557 while (SourceAction->getKind() != Action::InputClass) {
6558 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
6559 SourceAction = SourceAction->getInputs()[0];
6560 }
6561 auto CUID = cast<InputAction>(SourceAction)->getId();
6562 if (!CUID.empty())
6563 CmdArgs.push_back(Args.MakeArgString(Twine("-cuid=") + Twine(CUID)));
6564 }
6565
6566 if (IsHIP)
6567 CmdArgs.push_back("-fcuda-allow-variadic-functions");
6568
6569 if (IsCudaDevice || IsHIPDevice) {
6570 StringRef InlineThresh =
6571 Args.getLastArgValue(options::OPT_fgpu_inline_threshold_EQ);
6572 if (!InlineThresh.empty()) {
6573 std::string ArgStr =
6574 std::string("-inline-threshold=") + InlineThresh.str();
6575 CmdArgs.append({"-mllvm", Args.MakeArgStringRef(ArgStr)});
6576 }
6577 }
6578
6579 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
6580 // to specify the result of the compile phase on the host, so the meaningful
6581 // device declarations can be identified. Also, -fopenmp-is-device is passed
6582 // along to tell the frontend that it is generating code for a device, so that
6583 // only the relevant declarations are emitted.
6584 if (IsOpenMPDevice) {
6585 CmdArgs.push_back("-fopenmp-is-device");
6586 if (OpenMPDeviceInput) {
6587 CmdArgs.push_back("-fopenmp-host-ir-file-path");
6588 CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
6589 }
6590 }
6591
6592 if (Triple.isAMDGPU()) {
6593 handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs);
6594
6595 if (Args.hasFlag(options::OPT_munsafe_fp_atomics,
6596 options::OPT_mno_unsafe_fp_atomics, /*Default=*/false))
6597 CmdArgs.push_back("-munsafe-fp-atomics");
6598 }
6599
6600 // For all the host OpenMP offloading compile jobs we need to pass the targets
6601 // information using -fopenmp-targets= option.
6602 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
6603 SmallString<128> TargetInfo("-fopenmp-targets=");
6604
6605 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
6606 assert(Tgts && Tgts->getNumValues() &&
6607 "OpenMP offloading has to have targets specified.");
6608 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
6609 if (i)
6610 TargetInfo += ',';
6611 // We need to get the string from the triple because it may be not exactly
6612 // the same as the one we get directly from the arguments.
6613 llvm::Triple T(Tgts->getValue(i));
6614 TargetInfo += T.getTriple();
6615 }
6616 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
6617 }
6618
6619 bool VirtualFunctionElimination =
6620 Args.hasFlag(options::OPT_fvirtual_function_elimination,
6621 options::OPT_fno_virtual_function_elimination, false);
6622 if (VirtualFunctionElimination) {
6623 // VFE requires full LTO (currently, this might be relaxed to allow ThinLTO
6624 // in the future).
6625 if (LTOMode != LTOK_Full)
6626 D.Diag(diag::err_drv_argument_only_allowed_with)
6627 << "-fvirtual-function-elimination"
6628 << "-flto=full";
6629
6630 CmdArgs.push_back("-fvirtual-function-elimination");
6631 }
6632
6633 // VFE requires whole-program-vtables, and enables it by default.
6634 bool WholeProgramVTables = Args.hasFlag(
6635 options::OPT_fwhole_program_vtables,
6636 options::OPT_fno_whole_program_vtables, VirtualFunctionElimination);
6637 if (VirtualFunctionElimination && !WholeProgramVTables) {
6638 D.Diag(diag::err_drv_argument_not_allowed_with)
6639 << "-fno-whole-program-vtables"
6640 << "-fvirtual-function-elimination";
6641 }
6642
6643 if (WholeProgramVTables) {
6644 if (!IsUsingLTO)
6645 D.Diag(diag::err_drv_argument_only_allowed_with)
6646 << "-fwhole-program-vtables"
6647 << "-flto";
6648 CmdArgs.push_back("-fwhole-program-vtables");
6649 }
6650
6651 bool DefaultsSplitLTOUnit =
6652 (WholeProgramVTables || Sanitize.needsLTO()) &&
6653 (LTOMode == LTOK_Full || TC.canSplitThinLTOUnit());
6654 bool SplitLTOUnit =
6655 Args.hasFlag(options::OPT_fsplit_lto_unit,
6656 options::OPT_fno_split_lto_unit, DefaultsSplitLTOUnit);
6657 if (Sanitize.needsLTO() && !SplitLTOUnit)
6658 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fno-split-lto-unit"
6659 << "-fsanitize=cfi";
6660 if (SplitLTOUnit)
6661 CmdArgs.push_back("-fsplit-lto-unit");
6662
6663 if (Arg *A = Args.getLastArg(options::OPT_fglobal_isel,
6664 options::OPT_fno_global_isel)) {
6665 CmdArgs.push_back("-mllvm");
6666 if (A->getOption().matches(options::OPT_fglobal_isel)) {
6667 CmdArgs.push_back("-global-isel=1");
6668
6669 // GISel is on by default on AArch64 -O0, so don't bother adding
6670 // the fallback remarks for it. Other combinations will add a warning of
6671 // some kind.
6672 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
6673 bool IsOptLevelSupported = false;
6674
6675 Arg *A = Args.getLastArg(options::OPT_O_Group);
6676 if (Triple.getArch() == llvm::Triple::aarch64) {
6677 if (!A || A->getOption().matches(options::OPT_O0))
6678 IsOptLevelSupported = true;
6679 }
6680 if (!IsArchSupported || !IsOptLevelSupported) {
6681 CmdArgs.push_back("-mllvm");
6682 CmdArgs.push_back("-global-isel-abort=2");
6683
6684 if (!IsArchSupported)
6685 D.Diag(diag::warn_drv_global_isel_incomplete) << Triple.getArchName();
6686 else
6687 D.Diag(diag::warn_drv_global_isel_incomplete_opt);
6688 }
6689 } else {
6690 CmdArgs.push_back("-global-isel=0");
6691 }
6692 }
6693
6694 if (Args.hasArg(options::OPT_forder_file_instrumentation)) {
6695 CmdArgs.push_back("-forder-file-instrumentation");
6696 // Enable order file instrumentation when ThinLTO is not on. When ThinLTO is
6697 // on, we need to pass these flags as linker flags and that will be handled
6698 // outside of the compiler.
6699 if (!IsUsingLTO) {
6700 CmdArgs.push_back("-mllvm");
6701 CmdArgs.push_back("-enable-order-file-instrumentation");
6702 }
6703 }
6704
6705 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
6706 options::OPT_fno_force_enable_int128)) {
6707 if (A->getOption().matches(options::OPT_fforce_enable_int128))
6708 CmdArgs.push_back("-fforce-enable-int128");
6709 }
6710
6711 if (Args.hasFlag(options::OPT_fkeep_static_consts,
6712 options::OPT_fno_keep_static_consts, false))
6713 CmdArgs.push_back("-fkeep-static-consts");
6714
6715 if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
6716 options::OPT_fno_complete_member_pointers, false))
6717 CmdArgs.push_back("-fcomplete-member-pointers");
6718
6719 if (!Args.hasFlag(options::OPT_fcxx_static_destructors,
6720 options::OPT_fno_cxx_static_destructors, true))
6721 CmdArgs.push_back("-fno-c++-static-destructors");
6722
6723 addMachineOutlinerArgs(D, Args, CmdArgs, Triple, /*IsLTO=*/false);
6724
6725 if (Arg *A = Args.getLastArg(options::OPT_moutline_atomics,
6726 options::OPT_mno_outline_atomics)) {
6727 if (A->getOption().matches(options::OPT_moutline_atomics)) {
6728 // Option -moutline-atomics supported for AArch64 target only.
6729 if (!Triple.isAArch64()) {
6730 D.Diag(diag::warn_drv_moutline_atomics_unsupported_opt)
6731 << Triple.getArchName();
6732 } else {
6733 CmdArgs.push_back("-target-feature");
6734 CmdArgs.push_back("+outline-atomics");
6735 }
6736 } else {
6737 CmdArgs.push_back("-target-feature");
6738 CmdArgs.push_back("-outline-atomics");
6739 }
6740 } else if (Triple.isAArch64() &&
6741 getToolChain().IsAArch64OutlineAtomicsDefault(Args)) {
6742 CmdArgs.push_back("-target-feature");
6743 CmdArgs.push_back("+outline-atomics");
6744 }
6745
6746 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
6747 (TC.getTriple().isOSBinFormatELF() ||
6748 TC.getTriple().isOSBinFormatCOFF()) &&
6749 !TC.getTriple().isPS4() && !TC.getTriple().isVE() &&
6750 !TC.getTriple().isOSNetBSD() &&
6751 !Distro(D.getVFS(), TC.getTriple()).IsGentoo() &&
6752 !TC.getTriple().isAndroid() && TC.useIntegratedAs()))
6753 CmdArgs.push_back("-faddrsig");
6754
6755 if ((Triple.isOSBinFormatELF() || Triple.isOSBinFormatMachO()) &&
6756 (EH || UnwindTables || DebugInfoKind != codegenoptions::NoDebugInfo))
6757 CmdArgs.push_back("-D__GCC_HAVE_DWARF2_CFI_ASM=1");
6758
6759 if (Arg *A = Args.getLastArg(options::OPT_fsymbol_partition_EQ)) {
6760 std::string Str = A->getAsString(Args);
6761 if (!TC.getTriple().isOSBinFormatELF())
6762 D.Diag(diag::err_drv_unsupported_opt_for_target)
6763 << Str << TC.getTripleString();
6764 CmdArgs.push_back(Args.MakeArgString(Str));
6765 }
6766
6767 // Add the "-o out -x type src.c" flags last. This is done primarily to make
6768 // the -cc1 command easier to edit when reproducing compiler crashes.
6769 if (Output.getType() == types::TY_Dependencies) {
6770 // Handled with other dependency code.
6771 } else if (Output.isFilename()) {
6772 if (Output.getType() == clang::driver::types::TY_IFS_CPP ||
6773 Output.getType() == clang::driver::types::TY_IFS) {
6774 SmallString<128> OutputFilename(Output.getFilename());
6775 llvm::sys::path::replace_extension(OutputFilename, "ifs");
6776 CmdArgs.push_back("-o");
6777 CmdArgs.push_back(Args.MakeArgString(OutputFilename));
6778 } else {
6779 CmdArgs.push_back("-o");
6780 CmdArgs.push_back(Output.getFilename());
6781 }
6782 } else {
6783 assert(Output.isNothing() && "Invalid output.");
6784 }
6785
6786 addDashXForInput(Args, Input, CmdArgs);
6787
6788 ArrayRef<InputInfo> FrontendInputs = Input;
6789 if (IsHeaderModulePrecompile)
6790 FrontendInputs = ModuleHeaderInputs;
6791 else if (Input.isNothing())
6792 FrontendInputs = {};
6793
6794 for (const InputInfo &Input : FrontendInputs) {
6795 if (Input.isFilename())
6796 CmdArgs.push_back(Input.getFilename());
6797 else
6798 Input.getInputArg().renderAsInput(Args, CmdArgs);
6799 }
6800
6801 if (D.CC1Main && !D.CCGenDiagnostics) {
6802 // Invoke the CC1 directly in this process
6803 C.addCommand(std::make_unique<CC1Command>(JA, *this,
6804 ResponseFileSupport::AtFileUTF8(),
6805 Exec, CmdArgs, Inputs, Output));
6806 } else {
6807 C.addCommand(std::make_unique<Command>(JA, *this,
6808 ResponseFileSupport::AtFileUTF8(),
6809 Exec, CmdArgs, Inputs, Output));
6810 }
6811
6812 // Make the compile command echo its inputs for /showFilenames.
6813 if (Output.getType() == types::TY_Object &&
6814 Args.hasFlag(options::OPT__SLASH_showFilenames,
6815 options::OPT__SLASH_showFilenames_, false)) {
6816 C.getJobs().getJobs().back()->PrintInputFilenames = true;
6817 }
6818
6819 if (Arg *A = Args.getLastArg(options::OPT_pg))
6820 if (FPKeepKind == CodeGenOptions::FramePointerKind::None &&
6821 !Args.hasArg(options::OPT_mfentry))
6822 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
6823 << A->getAsString(Args);
6824
6825 // Claim some arguments which clang supports automatically.
6826
6827 // -fpch-preprocess is used with gcc to add a special marker in the output to
6828 // include the PCH file.
6829 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
6830
6831 // Claim some arguments which clang doesn't support, but we don't
6832 // care to warn the user about.
6833 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
6834 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
6835
6836 // Disable warnings for clang -E -emit-llvm foo.c
6837 Args.ClaimAllArgs(options::OPT_emit_llvm);
6838 }
6839
Clang(const ToolChain & TC)6840 Clang::Clang(const ToolChain &TC)
6841 // CAUTION! The first constructor argument ("clang") is not arbitrary,
6842 // as it is for other tools. Some operations on a Tool actually test
6843 // whether that tool is Clang based on the Tool's Name as a string.
6844 : Tool("clang", "clang frontend", TC) {}
6845
~Clang()6846 Clang::~Clang() {}
6847
6848 /// Add options related to the Objective-C runtime/ABI.
6849 ///
6850 /// Returns true if the runtime is non-fragile.
AddObjCRuntimeArgs(const ArgList & args,const InputInfoList & inputs,ArgStringList & cmdArgs,RewriteKind rewriteKind) const6851 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
6852 const InputInfoList &inputs,
6853 ArgStringList &cmdArgs,
6854 RewriteKind rewriteKind) const {
6855 // Look for the controlling runtime option.
6856 Arg *runtimeArg =
6857 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
6858 options::OPT_fobjc_runtime_EQ);
6859
6860 // Just forward -fobjc-runtime= to the frontend. This supercedes
6861 // options about fragility.
6862 if (runtimeArg &&
6863 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
6864 ObjCRuntime runtime;
6865 StringRef value = runtimeArg->getValue();
6866 if (runtime.tryParse(value)) {
6867 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
6868 << value;
6869 }
6870 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
6871 (runtime.getVersion() >= VersionTuple(2, 0)))
6872 if (!getToolChain().getTriple().isOSBinFormatELF() &&
6873 !getToolChain().getTriple().isOSBinFormatCOFF()) {
6874 getToolChain().getDriver().Diag(
6875 diag::err_drv_gnustep_objc_runtime_incompatible_binary)
6876 << runtime.getVersion().getMajor();
6877 }
6878
6879 runtimeArg->render(args, cmdArgs);
6880 return runtime;
6881 }
6882
6883 // Otherwise, we'll need the ABI "version". Version numbers are
6884 // slightly confusing for historical reasons:
6885 // 1 - Traditional "fragile" ABI
6886 // 2 - Non-fragile ABI, version 1
6887 // 3 - Non-fragile ABI, version 2
6888 unsigned objcABIVersion = 1;
6889 // If -fobjc-abi-version= is present, use that to set the version.
6890 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
6891 StringRef value = abiArg->getValue();
6892 if (value == "1")
6893 objcABIVersion = 1;
6894 else if (value == "2")
6895 objcABIVersion = 2;
6896 else if (value == "3")
6897 objcABIVersion = 3;
6898 else
6899 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
6900 } else {
6901 // Otherwise, determine if we are using the non-fragile ABI.
6902 bool nonFragileABIIsDefault =
6903 (rewriteKind == RK_NonFragile ||
6904 (rewriteKind == RK_None &&
6905 getToolChain().IsObjCNonFragileABIDefault()));
6906 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
6907 options::OPT_fno_objc_nonfragile_abi,
6908 nonFragileABIIsDefault)) {
6909 // Determine the non-fragile ABI version to use.
6910 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
6911 unsigned nonFragileABIVersion = 1;
6912 #else
6913 unsigned nonFragileABIVersion = 2;
6914 #endif
6915
6916 if (Arg *abiArg =
6917 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
6918 StringRef value = abiArg->getValue();
6919 if (value == "1")
6920 nonFragileABIVersion = 1;
6921 else if (value == "2")
6922 nonFragileABIVersion = 2;
6923 else
6924 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
6925 << value;
6926 }
6927
6928 objcABIVersion = 1 + nonFragileABIVersion;
6929 } else {
6930 objcABIVersion = 1;
6931 }
6932 }
6933
6934 // We don't actually care about the ABI version other than whether
6935 // it's non-fragile.
6936 bool isNonFragile = objcABIVersion != 1;
6937
6938 // If we have no runtime argument, ask the toolchain for its default runtime.
6939 // However, the rewriter only really supports the Mac runtime, so assume that.
6940 ObjCRuntime runtime;
6941 if (!runtimeArg) {
6942 switch (rewriteKind) {
6943 case RK_None:
6944 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
6945 break;
6946 case RK_Fragile:
6947 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
6948 break;
6949 case RK_NonFragile:
6950 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
6951 break;
6952 }
6953
6954 // -fnext-runtime
6955 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
6956 // On Darwin, make this use the default behavior for the toolchain.
6957 if (getToolChain().getTriple().isOSDarwin()) {
6958 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
6959
6960 // Otherwise, build for a generic macosx port.
6961 } else {
6962 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
6963 }
6964
6965 // -fgnu-runtime
6966 } else {
6967 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
6968 // Legacy behaviour is to target the gnustep runtime if we are in
6969 // non-fragile mode or the GCC runtime in fragile mode.
6970 if (isNonFragile)
6971 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
6972 else
6973 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
6974 }
6975
6976 if (llvm::any_of(inputs, [](const InputInfo &input) {
6977 return types::isObjC(input.getType());
6978 }))
6979 cmdArgs.push_back(
6980 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
6981 return runtime;
6982 }
6983
maybeConsumeDash(const std::string & EH,size_t & I)6984 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
6985 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
6986 I += HaveDash;
6987 return !HaveDash;
6988 }
6989
6990 namespace {
6991 struct EHFlags {
6992 bool Synch = false;
6993 bool Asynch = false;
6994 bool NoUnwindC = false;
6995 };
6996 } // end anonymous namespace
6997
6998 /// /EH controls whether to run destructor cleanups when exceptions are
6999 /// thrown. There are three modifiers:
7000 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
7001 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
7002 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
7003 /// - c: Assume that extern "C" functions are implicitly nounwind.
7004 /// The default is /EHs-c-, meaning cleanups are disabled.
parseClangCLEHFlags(const Driver & D,const ArgList & Args)7005 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
7006 EHFlags EH;
7007
7008 std::vector<std::string> EHArgs =
7009 Args.getAllArgValues(options::OPT__SLASH_EH);
7010 for (auto EHVal : EHArgs) {
7011 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
7012 switch (EHVal[I]) {
7013 case 'a':
7014 EH.Asynch = maybeConsumeDash(EHVal, I);
7015 if (EH.Asynch)
7016 EH.Synch = false;
7017 continue;
7018 case 'c':
7019 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
7020 continue;
7021 case 's':
7022 EH.Synch = maybeConsumeDash(EHVal, I);
7023 if (EH.Synch)
7024 EH.Asynch = false;
7025 continue;
7026 default:
7027 break;
7028 }
7029 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
7030 break;
7031 }
7032 }
7033 // The /GX, /GX- flags are only processed if there are not /EH flags.
7034 // The default is that /GX is not specified.
7035 if (EHArgs.empty() &&
7036 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
7037 /*Default=*/false)) {
7038 EH.Synch = true;
7039 EH.NoUnwindC = true;
7040 }
7041
7042 return EH;
7043 }
7044
AddClangCLArgs(const ArgList & Args,types::ID InputType,ArgStringList & CmdArgs,codegenoptions::DebugInfoKind * DebugInfoKind,bool * EmitCodeView) const7045 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
7046 ArgStringList &CmdArgs,
7047 codegenoptions::DebugInfoKind *DebugInfoKind,
7048 bool *EmitCodeView) const {
7049 unsigned RTOptionID = options::OPT__SLASH_MT;
7050 bool isNVPTX = getToolChain().getTriple().isNVPTX();
7051
7052 if (Args.hasArg(options::OPT__SLASH_LDd))
7053 // The /LDd option implies /MTd. The dependent lib part can be overridden,
7054 // but defining _DEBUG is sticky.
7055 RTOptionID = options::OPT__SLASH_MTd;
7056
7057 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
7058 RTOptionID = A->getOption().getID();
7059
7060 StringRef FlagForCRT;
7061 switch (RTOptionID) {
7062 case options::OPT__SLASH_MD:
7063 if (Args.hasArg(options::OPT__SLASH_LDd))
7064 CmdArgs.push_back("-D_DEBUG");
7065 CmdArgs.push_back("-D_MT");
7066 CmdArgs.push_back("-D_DLL");
7067 FlagForCRT = "--dependent-lib=msvcrt";
7068 break;
7069 case options::OPT__SLASH_MDd:
7070 CmdArgs.push_back("-D_DEBUG");
7071 CmdArgs.push_back("-D_MT");
7072 CmdArgs.push_back("-D_DLL");
7073 FlagForCRT = "--dependent-lib=msvcrtd";
7074 break;
7075 case options::OPT__SLASH_MT:
7076 if (Args.hasArg(options::OPT__SLASH_LDd))
7077 CmdArgs.push_back("-D_DEBUG");
7078 CmdArgs.push_back("-D_MT");
7079 CmdArgs.push_back("-flto-visibility-public-std");
7080 FlagForCRT = "--dependent-lib=libcmt";
7081 break;
7082 case options::OPT__SLASH_MTd:
7083 CmdArgs.push_back("-D_DEBUG");
7084 CmdArgs.push_back("-D_MT");
7085 CmdArgs.push_back("-flto-visibility-public-std");
7086 FlagForCRT = "--dependent-lib=libcmtd";
7087 break;
7088 default:
7089 llvm_unreachable("Unexpected option ID.");
7090 }
7091
7092 if (Args.hasArg(options::OPT__SLASH_Zl)) {
7093 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
7094 } else {
7095 CmdArgs.push_back(FlagForCRT.data());
7096
7097 // This provides POSIX compatibility (maps 'open' to '_open'), which most
7098 // users want. The /Za flag to cl.exe turns this off, but it's not
7099 // implemented in clang.
7100 CmdArgs.push_back("--dependent-lib=oldnames");
7101 }
7102
7103 if (Arg *ShowIncludes =
7104 Args.getLastArg(options::OPT__SLASH_showIncludes,
7105 options::OPT__SLASH_showIncludes_user)) {
7106 CmdArgs.push_back("--show-includes");
7107 if (ShowIncludes->getOption().matches(options::OPT__SLASH_showIncludes))
7108 CmdArgs.push_back("-sys-header-deps");
7109 }
7110
7111 // This controls whether or not we emit RTTI data for polymorphic types.
7112 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
7113 /*Default=*/false))
7114 CmdArgs.push_back("-fno-rtti-data");
7115
7116 // This controls whether or not we emit stack-protector instrumentation.
7117 // In MSVC, Buffer Security Check (/GS) is on by default.
7118 if (!isNVPTX && Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
7119 /*Default=*/true)) {
7120 CmdArgs.push_back("-stack-protector");
7121 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
7122 }
7123
7124 // Emit CodeView if -Z7 or -gline-tables-only are present.
7125 if (Arg *DebugInfoArg = Args.getLastArg(options::OPT__SLASH_Z7,
7126 options::OPT_gline_tables_only)) {
7127 *EmitCodeView = true;
7128 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
7129 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
7130 else
7131 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
7132 } else {
7133 *EmitCodeView = false;
7134 }
7135
7136 const Driver &D = getToolChain().getDriver();
7137 EHFlags EH = parseClangCLEHFlags(D, Args);
7138 if (!isNVPTX && (EH.Synch || EH.Asynch)) {
7139 if (types::isCXX(InputType))
7140 CmdArgs.push_back("-fcxx-exceptions");
7141 CmdArgs.push_back("-fexceptions");
7142 if (EH.Asynch)
7143 CmdArgs.push_back("-fasync-exceptions");
7144 }
7145 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
7146 CmdArgs.push_back("-fexternc-nounwind");
7147
7148 // /EP should expand to -E -P.
7149 if (Args.hasArg(options::OPT__SLASH_EP)) {
7150 CmdArgs.push_back("-E");
7151 CmdArgs.push_back("-P");
7152 }
7153
7154 unsigned VolatileOptionID;
7155 if (getToolChain().getTriple().isX86())
7156 VolatileOptionID = options::OPT__SLASH_volatile_ms;
7157 else
7158 VolatileOptionID = options::OPT__SLASH_volatile_iso;
7159
7160 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
7161 VolatileOptionID = A->getOption().getID();
7162
7163 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
7164 CmdArgs.push_back("-fms-volatile");
7165
7166 if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
7167 options::OPT__SLASH_Zc_dllexportInlines,
7168 false)) {
7169 CmdArgs.push_back("-fno-dllexport-inlines");
7170 }
7171
7172 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
7173 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
7174 if (MostGeneralArg && BestCaseArg)
7175 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
7176 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
7177
7178 if (MostGeneralArg) {
7179 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
7180 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
7181 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
7182
7183 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
7184 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
7185 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
7186 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
7187 << FirstConflict->getAsString(Args)
7188 << SecondConflict->getAsString(Args);
7189
7190 if (SingleArg)
7191 CmdArgs.push_back("-fms-memptr-rep=single");
7192 else if (MultipleArg)
7193 CmdArgs.push_back("-fms-memptr-rep=multiple");
7194 else
7195 CmdArgs.push_back("-fms-memptr-rep=virtual");
7196 }
7197
7198 // Parse the default calling convention options.
7199 if (Arg *CCArg =
7200 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
7201 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
7202 options::OPT__SLASH_Gregcall)) {
7203 unsigned DCCOptId = CCArg->getOption().getID();
7204 const char *DCCFlag = nullptr;
7205 bool ArchSupported = !isNVPTX;
7206 llvm::Triple::ArchType Arch = getToolChain().getArch();
7207 switch (DCCOptId) {
7208 case options::OPT__SLASH_Gd:
7209 DCCFlag = "-fdefault-calling-conv=cdecl";
7210 break;
7211 case options::OPT__SLASH_Gr:
7212 ArchSupported = Arch == llvm::Triple::x86;
7213 DCCFlag = "-fdefault-calling-conv=fastcall";
7214 break;
7215 case options::OPT__SLASH_Gz:
7216 ArchSupported = Arch == llvm::Triple::x86;
7217 DCCFlag = "-fdefault-calling-conv=stdcall";
7218 break;
7219 case options::OPT__SLASH_Gv:
7220 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
7221 DCCFlag = "-fdefault-calling-conv=vectorcall";
7222 break;
7223 case options::OPT__SLASH_Gregcall:
7224 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
7225 DCCFlag = "-fdefault-calling-conv=regcall";
7226 break;
7227 }
7228
7229 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
7230 if (ArchSupported && DCCFlag)
7231 CmdArgs.push_back(DCCFlag);
7232 }
7233
7234 Args.AddLastArg(CmdArgs, options::OPT_vtordisp_mode_EQ);
7235
7236 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
7237 CmdArgs.push_back("-fdiagnostics-format");
7238 CmdArgs.push_back("msvc");
7239 }
7240
7241 if (Arg *A = Args.getLastArg(options::OPT__SLASH_guard)) {
7242 StringRef GuardArgs = A->getValue();
7243 // The only valid options are "cf", "cf,nochecks", "cf-", "ehcont" and
7244 // "ehcont-".
7245 if (GuardArgs.equals_lower("cf")) {
7246 // Emit CFG instrumentation and the table of address-taken functions.
7247 CmdArgs.push_back("-cfguard");
7248 } else if (GuardArgs.equals_lower("cf,nochecks")) {
7249 // Emit only the table of address-taken functions.
7250 CmdArgs.push_back("-cfguard-no-checks");
7251 } else if (GuardArgs.equals_lower("ehcont")) {
7252 // Emit EH continuation table.
7253 CmdArgs.push_back("-ehcontguard");
7254 } else if (GuardArgs.equals_lower("cf-") ||
7255 GuardArgs.equals_lower("ehcont-")) {
7256 // Do nothing, but we might want to emit a security warning in future.
7257 } else {
7258 D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << GuardArgs;
7259 }
7260 }
7261 }
7262
getBaseInputName(const ArgList & Args,const InputInfo & Input)7263 const char *Clang::getBaseInputName(const ArgList &Args,
7264 const InputInfo &Input) {
7265 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
7266 }
7267
getBaseInputStem(const ArgList & Args,const InputInfoList & Inputs)7268 const char *Clang::getBaseInputStem(const ArgList &Args,
7269 const InputInfoList &Inputs) {
7270 const char *Str = getBaseInputName(Args, Inputs[0]);
7271
7272 if (const char *End = strrchr(Str, '.'))
7273 return Args.MakeArgString(std::string(Str, End));
7274
7275 return Str;
7276 }
7277
getDependencyFileName(const ArgList & Args,const InputInfoList & Inputs)7278 const char *Clang::getDependencyFileName(const ArgList &Args,
7279 const InputInfoList &Inputs) {
7280 // FIXME: Think about this more.
7281
7282 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
7283 SmallString<128> OutputFilename(OutputOpt->getValue());
7284 llvm::sys::path::replace_extension(OutputFilename, llvm::Twine('d'));
7285 return Args.MakeArgString(OutputFilename);
7286 }
7287
7288 return Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".d");
7289 }
7290
7291 // Begin ClangAs
7292
AddMIPSTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const7293 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
7294 ArgStringList &CmdArgs) const {
7295 StringRef CPUName;
7296 StringRef ABIName;
7297 const llvm::Triple &Triple = getToolChain().getTriple();
7298 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
7299
7300 CmdArgs.push_back("-target-abi");
7301 CmdArgs.push_back(ABIName.data());
7302 }
7303
AddX86TargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const7304 void ClangAs::AddX86TargetArgs(const ArgList &Args,
7305 ArgStringList &CmdArgs) const {
7306 addX86AlignBranchArgs(getToolChain().getDriver(), Args, CmdArgs,
7307 /*IsLTO=*/false);
7308
7309 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
7310 StringRef Value = A->getValue();
7311 if (Value == "intel" || Value == "att") {
7312 CmdArgs.push_back("-mllvm");
7313 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
7314 } else {
7315 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
7316 << A->getOption().getName() << Value;
7317 }
7318 }
7319 }
7320
AddRISCVTargetArgs(const ArgList & Args,ArgStringList & CmdArgs) const7321 void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
7322 ArgStringList &CmdArgs) const {
7323 const llvm::Triple &Triple = getToolChain().getTriple();
7324 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
7325
7326 CmdArgs.push_back("-target-abi");
7327 CmdArgs.push_back(ABIName.data());
7328 }
7329
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const7330 void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
7331 const InputInfo &Output, const InputInfoList &Inputs,
7332 const ArgList &Args,
7333 const char *LinkingOutput) const {
7334 ArgStringList CmdArgs;
7335
7336 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
7337 const InputInfo &Input = Inputs[0];
7338
7339 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
7340 const std::string &TripleStr = Triple.getTriple();
7341 const auto &D = getToolChain().getDriver();
7342
7343 // Don't warn about "clang -w -c foo.s"
7344 Args.ClaimAllArgs(options::OPT_w);
7345 // and "clang -emit-llvm -c foo.s"
7346 Args.ClaimAllArgs(options::OPT_emit_llvm);
7347
7348 claimNoWarnArgs(Args);
7349
7350 // Invoke ourselves in -cc1as mode.
7351 //
7352 // FIXME: Implement custom jobs for internal actions.
7353 CmdArgs.push_back("-cc1as");
7354
7355 // Add the "effective" target triple.
7356 CmdArgs.push_back("-triple");
7357 CmdArgs.push_back(Args.MakeArgString(TripleStr));
7358
7359 // Set the output mode, we currently only expect to be used as a real
7360 // assembler.
7361 CmdArgs.push_back("-filetype");
7362 CmdArgs.push_back("obj");
7363
7364 // Set the main file name, so that debug info works even with
7365 // -save-temps or preprocessed assembly.
7366 CmdArgs.push_back("-main-file-name");
7367 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
7368
7369 // Add the target cpu
7370 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
7371 if (!CPU.empty()) {
7372 CmdArgs.push_back("-target-cpu");
7373 CmdArgs.push_back(Args.MakeArgString(CPU));
7374 }
7375
7376 // Add the target features
7377 getTargetFeatures(D, Triple, Args, CmdArgs, true);
7378
7379 // Ignore explicit -force_cpusubtype_ALL option.
7380 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
7381
7382 // Pass along any -I options so we get proper .include search paths.
7383 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
7384
7385 // Determine the original source input.
7386 const Action *SourceAction = &JA;
7387 while (SourceAction->getKind() != Action::InputClass) {
7388 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
7389 SourceAction = SourceAction->getInputs()[0];
7390 }
7391
7392 // Forward -g and handle debug info related flags, assuming we are dealing
7393 // with an actual assembly file.
7394 bool WantDebug = false;
7395 Args.ClaimAllArgs(options::OPT_g_Group);
7396 if (Arg *A = Args.getLastArg(options::OPT_g_Group))
7397 WantDebug = !A->getOption().matches(options::OPT_g0) &&
7398 !A->getOption().matches(options::OPT_ggdb0);
7399
7400 unsigned DwarfVersion = ParseDebugDefaultVersion(getToolChain(), Args);
7401 if (const Arg *GDwarfN = getDwarfNArg(Args))
7402 DwarfVersion = DwarfVersionNum(GDwarfN->getSpelling());
7403
7404 if (DwarfVersion == 0)
7405 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
7406
7407 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
7408
7409 if (SourceAction->getType() == types::TY_Asm ||
7410 SourceAction->getType() == types::TY_PP_Asm) {
7411 // You might think that it would be ok to set DebugInfoKind outside of
7412 // the guard for source type, however there is a test which asserts
7413 // that some assembler invocation receives no -debug-info-kind,
7414 // and it's not clear whether that test is just overly restrictive.
7415 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
7416 : codegenoptions::NoDebugInfo);
7417 // Add the -fdebug-compilation-dir flag if needed.
7418 addDebugCompDirArg(Args, CmdArgs, C.getDriver().getVFS());
7419
7420 addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
7421
7422 // Set the AT_producer to the clang version when using the integrated
7423 // assembler on assembly source files.
7424 CmdArgs.push_back("-dwarf-debug-producer");
7425 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
7426
7427 // And pass along -I options
7428 Args.AddAllArgs(CmdArgs, options::OPT_I);
7429 }
7430 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
7431 llvm::DebuggerKind::Default);
7432 renderDwarfFormat(D, Triple, Args, CmdArgs, DwarfVersion);
7433 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
7434
7435
7436 // Handle -fPIC et al -- the relocation-model affects the assembler
7437 // for some targets.
7438 llvm::Reloc::Model RelocationModel;
7439 unsigned PICLevel;
7440 bool IsPIE;
7441 std::tie(RelocationModel, PICLevel, IsPIE) =
7442 ParsePICArgs(getToolChain(), Args);
7443
7444 const char *RMName = RelocationModelName(RelocationModel);
7445 if (RMName) {
7446 CmdArgs.push_back("-mrelocation-model");
7447 CmdArgs.push_back(RMName);
7448 }
7449
7450 // Optionally embed the -cc1as level arguments into the debug info, for build
7451 // analysis.
7452 if (getToolChain().UseDwarfDebugFlags()) {
7453 ArgStringList OriginalArgs;
7454 for (const auto &Arg : Args)
7455 Arg->render(Args, OriginalArgs);
7456
7457 SmallString<256> Flags;
7458 const char *Exec = getToolChain().getDriver().getClangProgramPath();
7459 EscapeSpacesAndBackslashes(Exec, Flags);
7460 for (const char *OriginalArg : OriginalArgs) {
7461 SmallString<128> EscapedArg;
7462 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
7463 Flags += " ";
7464 Flags += EscapedArg;
7465 }
7466 CmdArgs.push_back("-dwarf-debug-flags");
7467 CmdArgs.push_back(Args.MakeArgString(Flags));
7468 }
7469
7470 // FIXME: Add -static support, once we have it.
7471
7472 // Add target specific flags.
7473 switch (getToolChain().getArch()) {
7474 default:
7475 break;
7476
7477 case llvm::Triple::mips:
7478 case llvm::Triple::mipsel:
7479 case llvm::Triple::mips64:
7480 case llvm::Triple::mips64el:
7481 AddMIPSTargetArgs(Args, CmdArgs);
7482 break;
7483
7484 case llvm::Triple::x86:
7485 case llvm::Triple::x86_64:
7486 AddX86TargetArgs(Args, CmdArgs);
7487 break;
7488
7489 case llvm::Triple::arm:
7490 case llvm::Triple::armeb:
7491 case llvm::Triple::thumb:
7492 case llvm::Triple::thumbeb:
7493 // This isn't in AddARMTargetArgs because we want to do this for assembly
7494 // only, not C/C++.
7495 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
7496 options::OPT_mno_default_build_attributes, true)) {
7497 CmdArgs.push_back("-mllvm");
7498 CmdArgs.push_back("-arm-add-build-attributes");
7499 }
7500 break;
7501
7502 case llvm::Triple::aarch64:
7503 case llvm::Triple::aarch64_32:
7504 case llvm::Triple::aarch64_be:
7505 if (Args.hasArg(options::OPT_mmark_bti_property)) {
7506 CmdArgs.push_back("-mllvm");
7507 CmdArgs.push_back("-aarch64-mark-bti-property");
7508 }
7509 break;
7510
7511 case llvm::Triple::riscv32:
7512 case llvm::Triple::riscv64:
7513 AddRISCVTargetArgs(Args, CmdArgs);
7514 break;
7515 }
7516
7517 // Consume all the warning flags. Usually this would be handled more
7518 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
7519 // doesn't handle that so rather than warning about unused flags that are
7520 // actually used, we'll lie by omission instead.
7521 // FIXME: Stop lying and consume only the appropriate driver flags
7522 Args.ClaimAllArgs(options::OPT_W_Group);
7523
7524 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
7525 getToolChain().getDriver());
7526
7527 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
7528
7529 assert(Output.isFilename() && "Unexpected lipo output.");
7530 CmdArgs.push_back("-o");
7531 CmdArgs.push_back(Output.getFilename());
7532
7533 const llvm::Triple &T = getToolChain().getTriple();
7534 Arg *A;
7535 if (getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split &&
7536 T.isOSBinFormatELF()) {
7537 CmdArgs.push_back("-split-dwarf-output");
7538 CmdArgs.push_back(SplitDebugName(JA, Args, Input, Output));
7539 }
7540
7541 if (Triple.isAMDGPU())
7542 handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs);
7543
7544 assert(Input.isFilename() && "Invalid input.");
7545 CmdArgs.push_back(Input.getFilename());
7546
7547 const char *Exec = getToolChain().getDriver().getClangProgramPath();
7548 if (D.CC1Main && !D.CCGenDiagnostics) {
7549 // Invoke cc1as directly in this process.
7550 C.addCommand(std::make_unique<CC1Command>(JA, *this,
7551 ResponseFileSupport::AtFileUTF8(),
7552 Exec, CmdArgs, Inputs, Output));
7553 } else {
7554 C.addCommand(std::make_unique<Command>(JA, *this,
7555 ResponseFileSupport::AtFileUTF8(),
7556 Exec, CmdArgs, Inputs, Output));
7557 }
7558 }
7559
7560 // Begin OffloadBundler
7561
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const llvm::opt::ArgList & TCArgs,const char * LinkingOutput) const7562 void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
7563 const InputInfo &Output,
7564 const InputInfoList &Inputs,
7565 const llvm::opt::ArgList &TCArgs,
7566 const char *LinkingOutput) const {
7567 // The version with only one output is expected to refer to a bundling job.
7568 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
7569
7570 // The bundling command looks like this:
7571 // clang-offload-bundler -type=bc
7572 // -targets=host-triple,openmp-triple1,openmp-triple2
7573 // -outputs=input_file
7574 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
7575
7576 ArgStringList CmdArgs;
7577
7578 // Get the type.
7579 CmdArgs.push_back(TCArgs.MakeArgString(
7580 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
7581
7582 assert(JA.getInputs().size() == Inputs.size() &&
7583 "Not have inputs for all dependence actions??");
7584
7585 // Get the targets.
7586 SmallString<128> Triples;
7587 Triples += "-targets=";
7588 for (unsigned I = 0; I < Inputs.size(); ++I) {
7589 if (I)
7590 Triples += ',';
7591
7592 // Find ToolChain for this input.
7593 Action::OffloadKind CurKind = Action::OFK_Host;
7594 const ToolChain *CurTC = &getToolChain();
7595 const Action *CurDep = JA.getInputs()[I];
7596
7597 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
7598 CurTC = nullptr;
7599 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
7600 assert(CurTC == nullptr && "Expected one dependence!");
7601 CurKind = A->getOffloadingDeviceKind();
7602 CurTC = TC;
7603 });
7604 }
7605 Triples += Action::GetOffloadKindName(CurKind);
7606 Triples += '-';
7607 Triples += CurTC->getTriple().normalize();
7608 if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
7609 Triples += '-';
7610 Triples += CurDep->getOffloadingArch();
7611 }
7612 }
7613 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
7614
7615 // Get bundled file command.
7616 CmdArgs.push_back(
7617 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
7618
7619 // Get unbundled files command.
7620 SmallString<128> UB;
7621 UB += "-inputs=";
7622 for (unsigned I = 0; I < Inputs.size(); ++I) {
7623 if (I)
7624 UB += ',';
7625
7626 // Find ToolChain for this input.
7627 const ToolChain *CurTC = &getToolChain();
7628 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
7629 CurTC = nullptr;
7630 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
7631 assert(CurTC == nullptr && "Expected one dependence!");
7632 CurTC = TC;
7633 });
7634 }
7635 UB += CurTC->getInputFilename(Inputs[I]);
7636 }
7637 CmdArgs.push_back(TCArgs.MakeArgString(UB));
7638
7639 // All the inputs are encoded as commands.
7640 C.addCommand(std::make_unique<Command>(
7641 JA, *this, ResponseFileSupport::None(),
7642 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
7643 CmdArgs, None, Output));
7644 }
7645
ConstructJobMultipleOutputs(Compilation & C,const JobAction & JA,const InputInfoList & Outputs,const InputInfoList & Inputs,const llvm::opt::ArgList & TCArgs,const char * LinkingOutput) const7646 void OffloadBundler::ConstructJobMultipleOutputs(
7647 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
7648 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
7649 const char *LinkingOutput) const {
7650 // The version with multiple outputs is expected to refer to a unbundling job.
7651 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
7652
7653 // The unbundling command looks like this:
7654 // clang-offload-bundler -type=bc
7655 // -targets=host-triple,openmp-triple1,openmp-triple2
7656 // -inputs=input_file
7657 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
7658 // -unbundle
7659
7660 ArgStringList CmdArgs;
7661
7662 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
7663 InputInfo Input = Inputs.front();
7664
7665 // Get the type.
7666 CmdArgs.push_back(TCArgs.MakeArgString(
7667 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
7668
7669 // Get the targets.
7670 SmallString<128> Triples;
7671 Triples += "-targets=";
7672 auto DepInfo = UA.getDependentActionsInfo();
7673 for (unsigned I = 0; I < DepInfo.size(); ++I) {
7674 if (I)
7675 Triples += ',';
7676
7677 auto &Dep = DepInfo[I];
7678 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
7679 Triples += '-';
7680 Triples += Dep.DependentToolChain->getTriple().normalize();
7681 if (Dep.DependentOffloadKind == Action::OFK_HIP &&
7682 !Dep.DependentBoundArch.empty()) {
7683 Triples += '-';
7684 Triples += Dep.DependentBoundArch;
7685 }
7686 }
7687
7688 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
7689
7690 // Get bundled file command.
7691 CmdArgs.push_back(
7692 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
7693
7694 // Get unbundled files command.
7695 SmallString<128> UB;
7696 UB += "-outputs=";
7697 for (unsigned I = 0; I < Outputs.size(); ++I) {
7698 if (I)
7699 UB += ',';
7700 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
7701 }
7702 CmdArgs.push_back(TCArgs.MakeArgString(UB));
7703 CmdArgs.push_back("-unbundle");
7704 CmdArgs.push_back("-allow-missing-bundles");
7705
7706 // All the inputs are encoded as commands.
7707 C.addCommand(std::make_unique<Command>(
7708 JA, *this, ResponseFileSupport::None(),
7709 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
7710 CmdArgs, None, Outputs));
7711 }
7712
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const7713 void OffloadWrapper::ConstructJob(Compilation &C, const JobAction &JA,
7714 const InputInfo &Output,
7715 const InputInfoList &Inputs,
7716 const ArgList &Args,
7717 const char *LinkingOutput) const {
7718 ArgStringList CmdArgs;
7719
7720 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
7721
7722 // Add the "effective" target triple.
7723 CmdArgs.push_back("-target");
7724 CmdArgs.push_back(Args.MakeArgString(Triple.getTriple()));
7725
7726 // Add the output file name.
7727 assert(Output.isFilename() && "Invalid output.");
7728 CmdArgs.push_back("-o");
7729 CmdArgs.push_back(Output.getFilename());
7730
7731 // Add inputs.
7732 for (const InputInfo &I : Inputs) {
7733 assert(I.isFilename() && "Invalid input.");
7734 CmdArgs.push_back(I.getFilename());
7735 }
7736
7737 C.addCommand(std::make_unique<Command>(
7738 JA, *this, ResponseFileSupport::None(),
7739 Args.MakeArgString(getToolChain().GetProgramPath(getShortName())),
7740 CmdArgs, Inputs, Output));
7741 }
7742