1 //===- CompilerInvocation.cpp ---------------------------------------------===//
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/Frontend/CompilerInvocation.h"
10 #include "TestModuleFileExtension.h"
11 #include "clang/Basic/Builtins.h"
12 #include "clang/Basic/CharInfo.h"
13 #include "clang/Basic/CodeGenOptions.h"
14 #include "clang/Basic/CommentOptions.h"
15 #include "clang/Basic/DebugInfoOptions.h"
16 #include "clang/Basic/Diagnostic.h"
17 #include "clang/Basic/DiagnosticDriver.h"
18 #include "clang/Basic/DiagnosticOptions.h"
19 #include "clang/Basic/FileSystemOptions.h"
20 #include "clang/Basic/LLVM.h"
21 #include "clang/Basic/LangOptions.h"
22 #include "clang/Basic/LangStandard.h"
23 #include "clang/Basic/ObjCRuntime.h"
24 #include "clang/Basic/Sanitizers.h"
25 #include "clang/Basic/SourceLocation.h"
26 #include "clang/Basic/TargetOptions.h"
27 #include "clang/Basic/Version.h"
28 #include "clang/Basic/Visibility.h"
29 #include "clang/Basic/XRayInstr.h"
30 #include "clang/Config/config.h"
31 #include "clang/Driver/Driver.h"
32 #include "clang/Driver/DriverDiagnostic.h"
33 #include "clang/Driver/Options.h"
34 #include "clang/Frontend/CommandLineSourceLoc.h"
35 #include "clang/Frontend/DependencyOutputOptions.h"
36 #include "clang/Frontend/FrontendDiagnostic.h"
37 #include "clang/Frontend/FrontendOptions.h"
38 #include "clang/Frontend/FrontendPluginRegistry.h"
39 #include "clang/Frontend/MigratorOptions.h"
40 #include "clang/Frontend/PreprocessorOutputOptions.h"
41 #include "clang/Frontend/Utils.h"
42 #include "clang/Lex/HeaderSearchOptions.h"
43 #include "clang/Lex/PreprocessorOptions.h"
44 #include "clang/Sema/CodeCompleteOptions.h"
45 #include "clang/Serialization/ASTBitCodes.h"
46 #include "clang/Serialization/ModuleFileExtension.h"
47 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
48 #include "llvm/ADT/APInt.h"
49 #include "llvm/ADT/ArrayRef.h"
50 #include "llvm/ADT/CachedHashString.h"
51 #include "llvm/ADT/FloatingPointMode.h"
52 #include "llvm/ADT/Hashing.h"
53 #include "llvm/ADT/None.h"
54 #include "llvm/ADT/Optional.h"
55 #include "llvm/ADT/SmallString.h"
56 #include "llvm/ADT/SmallVector.h"
57 #include "llvm/ADT/StringRef.h"
58 #include "llvm/ADT/StringSwitch.h"
59 #include "llvm/ADT/Triple.h"
60 #include "llvm/ADT/Twine.h"
61 #include "llvm/Config/llvm-config.h"
62 #include "llvm/IR/DebugInfoMetadata.h"
63 #include "llvm/Linker/Linker.h"
64 #include "llvm/MC/MCTargetOptions.h"
65 #include "llvm/Option/Arg.h"
66 #include "llvm/Option/ArgList.h"
67 #include "llvm/Option/OptSpecifier.h"
68 #include "llvm/Option/OptTable.h"
69 #include "llvm/Option/Option.h"
70 #include "llvm/ProfileData/InstrProfReader.h"
71 #include "llvm/Remarks/HotnessThresholdParser.h"
72 #include "llvm/Support/CodeGen.h"
73 #include "llvm/Support/Compiler.h"
74 #include "llvm/Support/Error.h"
75 #include "llvm/Support/ErrorHandling.h"
76 #include "llvm/Support/ErrorOr.h"
77 #include "llvm/Support/FileSystem.h"
78 #include "llvm/Support/Host.h"
79 #include "llvm/Support/MathExtras.h"
80 #include "llvm/Support/MemoryBuffer.h"
81 #include "llvm/Support/Path.h"
82 #include "llvm/Support/Process.h"
83 #include "llvm/Support/Regex.h"
84 #include "llvm/Support/VersionTuple.h"
85 #include "llvm/Support/VirtualFileSystem.h"
86 #include "llvm/Support/raw_ostream.h"
87 #include "llvm/Target/TargetOptions.h"
88 #include <algorithm>
89 #include <atomic>
90 #include <cassert>
91 #include <cstddef>
92 #include <cstring>
93 #include <memory>
94 #include <string>
95 #include <tuple>
96 #include <type_traits>
97 #include <utility>
98 #include <vector>
99
100 using namespace clang;
101 using namespace driver;
102 using namespace options;
103 using namespace llvm::opt;
104
105 //===----------------------------------------------------------------------===//
106 // Initialization.
107 //===----------------------------------------------------------------------===//
108
CompilerInvocationBase()109 CompilerInvocationBase::CompilerInvocationBase()
110 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
111 DiagnosticOpts(new DiagnosticOptions()),
112 HeaderSearchOpts(new HeaderSearchOptions()),
113 PreprocessorOpts(new PreprocessorOptions()) {}
114
CompilerInvocationBase(const CompilerInvocationBase & X)115 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
116 : LangOpts(new LangOptions(*X.getLangOpts())),
117 TargetOpts(new TargetOptions(X.getTargetOpts())),
118 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
119 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
120 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
121
122 CompilerInvocationBase::~CompilerInvocationBase() = default;
123
124 //===----------------------------------------------------------------------===//
125 // Normalizers
126 //===----------------------------------------------------------------------===//
127
128 #define SIMPLE_ENUM_VALUE_TABLE
129 #include "clang/Driver/Options.inc"
130 #undef SIMPLE_ENUM_VALUE_TABLE
131
132 static llvm::Optional<bool>
normalizeSimpleFlag(OptSpecifier Opt,unsigned TableIndex,const ArgList & Args,DiagnosticsEngine & Diags,bool & Success)133 normalizeSimpleFlag(OptSpecifier Opt, unsigned TableIndex, const ArgList &Args,
134 DiagnosticsEngine &Diags, bool &Success) {
135 if (Args.hasArg(Opt))
136 return true;
137 return None;
138 }
139
normalizeSimpleNegativeFlag(OptSpecifier Opt,unsigned,const ArgList & Args,DiagnosticsEngine &,bool & Success)140 static Optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, unsigned,
141 const ArgList &Args,
142 DiagnosticsEngine &,
143 bool &Success) {
144 if (Args.hasArg(Opt))
145 return false;
146 return None;
147 }
148
149 /// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but
150 /// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with
151 /// unnecessary template instantiations and just ignore it with a variadic
152 /// argument.
denormalizeSimpleFlag(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator,Option::OptionClass,unsigned,...)153 static void denormalizeSimpleFlag(SmallVectorImpl<const char *> &Args,
154 const char *Spelling,
155 CompilerInvocation::StringAllocator,
156 Option::OptionClass, unsigned, /*T*/...) {
157 Args.push_back(Spelling);
158 }
159
is_uint64_t_convertible()160 template <typename T> static constexpr bool is_uint64_t_convertible() {
161 return !std::is_same<T, uint64_t>::value &&
162 llvm::is_integral_or_enum<T>::value;
163 }
164
165 template <typename T,
166 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false>
makeFlagToValueNormalizer(T Value)167 static auto makeFlagToValueNormalizer(T Value) {
168 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args,
169 DiagnosticsEngine &, bool &Success) -> Optional<T> {
170 if (Args.hasArg(Opt))
171 return Value;
172 return None;
173 };
174 }
175
176 template <typename T,
177 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false>
makeFlagToValueNormalizer(T Value)178 static auto makeFlagToValueNormalizer(T Value) {
179 return makeFlagToValueNormalizer(uint64_t(Value));
180 }
181
makeBooleanOptionNormalizer(bool Value,bool OtherValue,OptSpecifier OtherOpt)182 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue,
183 OptSpecifier OtherOpt) {
184 return [Value, OtherValue, OtherOpt](OptSpecifier Opt, unsigned,
185 const ArgList &Args, DiagnosticsEngine &,
186 bool &Success) -> Optional<bool> {
187 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) {
188 return A->getOption().matches(Opt) ? Value : OtherValue;
189 }
190 return None;
191 };
192 }
193
makeBooleanOptionDenormalizer(bool Value)194 static auto makeBooleanOptionDenormalizer(bool Value) {
195 return [Value](SmallVectorImpl<const char *> &Args, const char *Spelling,
196 CompilerInvocation::StringAllocator, Option::OptionClass,
197 unsigned, bool KeyPath) {
198 if (KeyPath == Value)
199 Args.push_back(Spelling);
200 };
201 }
202
denormalizeStringImpl(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned,Twine Value)203 static void denormalizeStringImpl(SmallVectorImpl<const char *> &Args,
204 const char *Spelling,
205 CompilerInvocation::StringAllocator SA,
206 Option::OptionClass OptClass, unsigned,
207 Twine Value) {
208 switch (OptClass) {
209 case Option::SeparateClass:
210 case Option::JoinedOrSeparateClass:
211 Args.push_back(Spelling);
212 Args.push_back(SA(Value));
213 break;
214 case Option::JoinedClass:
215 Args.push_back(SA(Twine(Spelling) + Value));
216 break;
217 default:
218 llvm_unreachable("Cannot denormalize an option with option class "
219 "incompatible with string denormalization.");
220 }
221 }
222
223 template <typename T>
224 static void
denormalizeString(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned TableIndex,T Value)225 denormalizeString(SmallVectorImpl<const char *> &Args, const char *Spelling,
226 CompilerInvocation::StringAllocator SA,
227 Option::OptionClass OptClass, unsigned TableIndex, T Value) {
228 denormalizeStringImpl(Args, Spelling, SA, OptClass, TableIndex, Twine(Value));
229 }
230
231 static Optional<SimpleEnumValue>
findValueTableByName(const SimpleEnumValueTable & Table,StringRef Name)232 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) {
233 for (int I = 0, E = Table.Size; I != E; ++I)
234 if (Name == Table.Table[I].Name)
235 return Table.Table[I];
236
237 return None;
238 }
239
240 static Optional<SimpleEnumValue>
findValueTableByValue(const SimpleEnumValueTable & Table,unsigned Value)241 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) {
242 for (int I = 0, E = Table.Size; I != E; ++I)
243 if (Value == Table.Table[I].Value)
244 return Table.Table[I];
245
246 return None;
247 }
248
249 static llvm::Optional<unsigned>
normalizeSimpleEnum(OptSpecifier Opt,unsigned TableIndex,const ArgList & Args,DiagnosticsEngine & Diags,bool & Success)250 normalizeSimpleEnum(OptSpecifier Opt, unsigned TableIndex, const ArgList &Args,
251 DiagnosticsEngine &Diags, bool &Success) {
252 assert(TableIndex < SimpleEnumValueTablesSize);
253 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex];
254
255 auto *Arg = Args.getLastArg(Opt);
256 if (!Arg)
257 return None;
258
259 StringRef ArgValue = Arg->getValue();
260 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue))
261 return MaybeEnumVal->Value;
262
263 Success = false;
264 Diags.Report(diag::err_drv_invalid_value)
265 << Arg->getAsString(Args) << ArgValue;
266 return None;
267 }
268
denormalizeSimpleEnumImpl(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned TableIndex,unsigned Value)269 static void denormalizeSimpleEnumImpl(SmallVectorImpl<const char *> &Args,
270 const char *Spelling,
271 CompilerInvocation::StringAllocator SA,
272 Option::OptionClass OptClass,
273 unsigned TableIndex, unsigned Value) {
274 assert(TableIndex < SimpleEnumValueTablesSize);
275 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex];
276 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) {
277 denormalizeString(Args, Spelling, SA, OptClass, TableIndex,
278 MaybeEnumVal->Name);
279 } else {
280 llvm_unreachable("The simple enum value was not correctly defined in "
281 "the tablegen option description");
282 }
283 }
284
285 template <typename T>
denormalizeSimpleEnum(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned TableIndex,T Value)286 static void denormalizeSimpleEnum(SmallVectorImpl<const char *> &Args,
287 const char *Spelling,
288 CompilerInvocation::StringAllocator SA,
289 Option::OptionClass OptClass,
290 unsigned TableIndex, T Value) {
291 return denormalizeSimpleEnumImpl(Args, Spelling, SA, OptClass, TableIndex,
292 static_cast<unsigned>(Value));
293 }
294
normalizeString(OptSpecifier Opt,int TableIndex,const ArgList & Args,DiagnosticsEngine & Diags,bool & Success)295 static Optional<std::string> normalizeString(OptSpecifier Opt, int TableIndex,
296 const ArgList &Args,
297 DiagnosticsEngine &Diags,
298 bool &Success) {
299 auto *Arg = Args.getLastArg(Opt);
300 if (!Arg)
301 return None;
302 return std::string(Arg->getValue());
303 }
304
305 template <typename IntTy>
306 static Optional<IntTy>
normalizeStringIntegral(OptSpecifier Opt,int,const ArgList & Args,DiagnosticsEngine & Diags,bool & Success)307 normalizeStringIntegral(OptSpecifier Opt, int, const ArgList &Args,
308 DiagnosticsEngine &Diags, bool &Success) {
309 auto *Arg = Args.getLastArg(Opt);
310 if (!Arg)
311 return None;
312 IntTy Res;
313 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) {
314 Success = false;
315 Diags.Report(diag::err_drv_invalid_int_value)
316 << Arg->getAsString(Args) << Arg->getValue();
317 return None;
318 }
319 return Res;
320 }
321
322 static Optional<std::vector<std::string>>
normalizeStringVector(OptSpecifier Opt,int,const ArgList & Args,DiagnosticsEngine &,bool & Success)323 normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args,
324 DiagnosticsEngine &, bool &Success) {
325 return Args.getAllArgValues(Opt);
326 }
327
denormalizeStringVector(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned TableIndex,const std::vector<std::string> & Values)328 static void denormalizeStringVector(SmallVectorImpl<const char *> &Args,
329 const char *Spelling,
330 CompilerInvocation::StringAllocator SA,
331 Option::OptionClass OptClass,
332 unsigned TableIndex,
333 const std::vector<std::string> &Values) {
334 switch (OptClass) {
335 case Option::CommaJoinedClass: {
336 std::string CommaJoinedValue;
337 if (!Values.empty()) {
338 CommaJoinedValue.append(Values.front());
339 for (const std::string &Value : llvm::drop_begin(Values, 1)) {
340 CommaJoinedValue.append(",");
341 CommaJoinedValue.append(Value);
342 }
343 }
344 denormalizeString(Args, Spelling, SA, Option::OptionClass::JoinedClass,
345 TableIndex, CommaJoinedValue);
346 break;
347 }
348 case Option::JoinedClass:
349 case Option::SeparateClass:
350 case Option::JoinedOrSeparateClass:
351 for (const std::string &Value : Values)
352 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, Value);
353 break;
354 default:
355 llvm_unreachable("Cannot denormalize an option with option class "
356 "incompatible with string vector denormalization.");
357 }
358 }
359
normalizeTriple(OptSpecifier Opt,int TableIndex,const ArgList & Args,DiagnosticsEngine & Diags,bool & Success)360 static Optional<std::string> normalizeTriple(OptSpecifier Opt, int TableIndex,
361 const ArgList &Args,
362 DiagnosticsEngine &Diags,
363 bool &Success) {
364 auto *Arg = Args.getLastArg(Opt);
365 if (!Arg)
366 return None;
367 return llvm::Triple::normalize(Arg->getValue());
368 }
369
370 template <typename T, typename U>
mergeForwardValue(T KeyPath,U Value)371 static T mergeForwardValue(T KeyPath, U Value) {
372 return static_cast<T>(Value);
373 }
374
mergeMaskValue(T KeyPath,U Value)375 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) {
376 return KeyPath | Value;
377 }
378
extractForwardValue(T KeyPath)379 template <typename T> static T extractForwardValue(T KeyPath) {
380 return KeyPath;
381 }
382
383 template <typename T, typename U, U Value>
extractMaskValue(T KeyPath)384 static T extractMaskValue(T KeyPath) {
385 return KeyPath & Value;
386 }
387
388 #define PARSE_OPTION_WITH_MARSHALLING(ARGS, DIAGS, SUCCESS, ID, FLAGS, PARAM, \
389 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
390 IMPLIED_CHECK, IMPLIED_VALUE, \
391 NORMALIZER, MERGER, TABLE_INDEX) \
392 if ((FLAGS)&options::CC1Option) { \
393 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \
394 if (IMPLIED_CHECK) \
395 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \
396 if (SHOULD_PARSE) \
397 if (auto MaybeValue = \
398 NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS, SUCCESS)) \
399 KEYPATH = \
400 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \
401 }
402
403 static const StringRef GetInputKindName(InputKind IK);
404
FixupInvocation(CompilerInvocation & Invocation,DiagnosticsEngine & Diags,const InputArgList & Args,InputKind IK)405 static void FixupInvocation(CompilerInvocation &Invocation,
406 DiagnosticsEngine &Diags, const InputArgList &Args,
407 InputKind IK) {
408 LangOptions &LangOpts = *Invocation.getLangOpts();
409 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts();
410 TargetOptions &TargetOpts = Invocation.getTargetOpts();
411 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts();
412 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument;
413 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents;
414 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents;
415 CodeGenOpts.DisableFree = FrontendOpts.DisableFree;
416 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex;
417
418 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables;
419 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening;
420 LangOpts.CurrentModule = LangOpts.ModuleName;
421
422 llvm::Triple T(TargetOpts.Triple);
423 llvm::Triple::ArchType Arch = T.getArch();
424
425 CodeGenOpts.CodeModel = TargetOpts.CodeModel;
426
427 if (LangOpts.getExceptionHandling() != llvm::ExceptionHandling::None &&
428 T.isWindowsMSVCEnvironment())
429 Diags.Report(diag::err_fe_invalid_exception_model)
430 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str();
431
432 if (LangOpts.AppleKext && !LangOpts.CPlusPlus)
433 Diags.Report(diag::warn_c_kext);
434
435 if (LangOpts.NewAlignOverride &&
436 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) {
437 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
438 Diags.Report(diag::err_fe_invalid_alignment)
439 << A->getAsString(Args) << A->getValue();
440 LangOpts.NewAlignOverride = 0;
441 }
442
443 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus)
444 Diags.Report(diag::err_drv_argument_not_allowed_with)
445 << "-fgnu89-inline" << GetInputKindName(IK);
446
447 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP)
448 Diags.Report(diag::warn_ignored_hip_only_option)
449 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args);
450
451 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP)
452 Diags.Report(diag::warn_ignored_hip_only_option)
453 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args);
454
455 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
456 // This option should be deprecated for CL > 1.0 because
457 // this option was added for compatibility with OpenCL 1.0.
458 if (Args.getLastArg(OPT_cl_strict_aliasing) && LangOpts.OpenCLVersion > 100)
459 Diags.Report(diag::warn_option_invalid_ocl_version)
460 << LangOpts.getOpenCLVersionTuple().getAsString()
461 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args);
462
463 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
464 auto DefaultCC = LangOpts.getDefaultCallingConv();
465
466 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
467 DefaultCC == LangOptions::DCC_StdCall) &&
468 Arch != llvm::Triple::x86;
469 emitError |= (DefaultCC == LangOptions::DCC_VectorCall ||
470 DefaultCC == LangOptions::DCC_RegCall) &&
471 !T.isX86();
472 if (emitError)
473 Diags.Report(diag::err_drv_argument_not_allowed_with)
474 << A->getSpelling() << T.getTriple();
475 }
476
477 if (!CodeGenOpts.ProfileRemappingFile.empty() && CodeGenOpts.LegacyPassManager)
478 Diags.Report(diag::err_drv_argument_only_allowed_with)
479 << Args.getLastArg(OPT_fprofile_remapping_file_EQ)->getAsString(Args)
480 << "-fno-legacy-pass-manager";
481 }
482
483 //===----------------------------------------------------------------------===//
484 // Deserialization (from args)
485 //===----------------------------------------------------------------------===//
486
getOptimizationLevel(ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)487 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
488 DiagnosticsEngine &Diags) {
489 unsigned DefaultOpt = llvm::CodeGenOpt::None;
490 if (IK.getLanguage() == Language::OpenCL && !Args.hasArg(OPT_cl_opt_disable))
491 DefaultOpt = llvm::CodeGenOpt::Default;
492
493 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
494 if (A->getOption().matches(options::OPT_O0))
495 return llvm::CodeGenOpt::None;
496
497 if (A->getOption().matches(options::OPT_Ofast))
498 return llvm::CodeGenOpt::Aggressive;
499
500 assert(A->getOption().matches(options::OPT_O));
501
502 StringRef S(A->getValue());
503 if (S == "s" || S == "z")
504 return llvm::CodeGenOpt::Default;
505
506 if (S == "g")
507 return llvm::CodeGenOpt::Less;
508
509 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
510 }
511
512 return DefaultOpt;
513 }
514
getOptimizationLevelSize(ArgList & Args)515 static unsigned getOptimizationLevelSize(ArgList &Args) {
516 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
517 if (A->getOption().matches(options::OPT_O)) {
518 switch (A->getValue()[0]) {
519 default:
520 return 0;
521 case 's':
522 return 1;
523 case 'z':
524 return 2;
525 }
526 }
527 }
528 return 0;
529 }
530
GetOptName(llvm::opt::OptSpecifier OptSpecifier)531 static std::string GetOptName(llvm::opt::OptSpecifier OptSpecifier) {
532 static const OptTable &OptTable = getDriverOptTable();
533 return OptTable.getOption(OptSpecifier).getPrefixedName();
534 }
535
addDiagnosticArgs(ArgList & Args,OptSpecifier Group,OptSpecifier GroupWithValue,std::vector<std::string> & Diagnostics)536 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
537 OptSpecifier GroupWithValue,
538 std::vector<std::string> &Diagnostics) {
539 for (auto *A : Args.filtered(Group)) {
540 if (A->getOption().getKind() == Option::FlagClass) {
541 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
542 // its name (minus the "W" or "R" at the beginning) to the warning list.
543 Diagnostics.push_back(
544 std::string(A->getOption().getName().drop_front(1)));
545 } else if (A->getOption().matches(GroupWithValue)) {
546 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
547 Diagnostics.push_back(
548 std::string(A->getOption().getName().drop_front(1).rtrim("=-")));
549 } else {
550 // Otherwise, add its value (for OPT_W_Joined and similar).
551 for (const auto *Arg : A->getValues())
552 Diagnostics.emplace_back(Arg);
553 }
554 }
555 }
556
557 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr,
558 // it won't verify the input.
559 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
560 DiagnosticsEngine *Diags);
561
getAllNoBuiltinFuncValues(ArgList & Args,std::vector<std::string> & Funcs)562 static void getAllNoBuiltinFuncValues(ArgList &Args,
563 std::vector<std::string> &Funcs) {
564 SmallVector<const char *, 8> Values;
565 for (const auto &Arg : Args) {
566 const Option &O = Arg->getOption();
567 if (O.matches(options::OPT_fno_builtin_)) {
568 const char *FuncName = Arg->getValue();
569 if (Builtin::Context::isBuiltinFunc(FuncName))
570 Values.push_back(FuncName);
571 }
572 }
573 Funcs.insert(Funcs.end(), Values.begin(), Values.end());
574 }
575
ParseAnalyzerArgs(AnalyzerOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)576 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
577 DiagnosticsEngine &Diags) {
578 bool Success = true;
579 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
580 StringRef Name = A->getValue();
581 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
582 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
583 .Case(CMDFLAG, NAME##Model)
584 #include "clang/StaticAnalyzer/Core/Analyses.def"
585 .Default(NumStores);
586 if (Value == NumStores) {
587 Diags.Report(diag::err_drv_invalid_value)
588 << A->getAsString(Args) << Name;
589 Success = false;
590 } else {
591 Opts.AnalysisStoreOpt = Value;
592 }
593 }
594
595 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
596 StringRef Name = A->getValue();
597 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
598 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
599 .Case(CMDFLAG, NAME##Model)
600 #include "clang/StaticAnalyzer/Core/Analyses.def"
601 .Default(NumConstraints);
602 if (Value == NumConstraints) {
603 Diags.Report(diag::err_drv_invalid_value)
604 << A->getAsString(Args) << Name;
605 Success = false;
606 } else {
607 Opts.AnalysisConstraintsOpt = Value;
608 }
609 }
610
611 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
612 StringRef Name = A->getValue();
613 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
614 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
615 .Case(CMDFLAG, PD_##NAME)
616 #include "clang/StaticAnalyzer/Core/Analyses.def"
617 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
618 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
619 Diags.Report(diag::err_drv_invalid_value)
620 << A->getAsString(Args) << Name;
621 Success = false;
622 } else {
623 Opts.AnalysisDiagOpt = Value;
624 }
625 }
626
627 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
628 StringRef Name = A->getValue();
629 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
630 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
631 .Case(CMDFLAG, NAME)
632 #include "clang/StaticAnalyzer/Core/Analyses.def"
633 .Default(NumPurgeModes);
634 if (Value == NumPurgeModes) {
635 Diags.Report(diag::err_drv_invalid_value)
636 << A->getAsString(Args) << Name;
637 Success = false;
638 } else {
639 Opts.AnalysisPurgeOpt = Value;
640 }
641 }
642
643 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
644 StringRef Name = A->getValue();
645 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
646 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
647 .Case(CMDFLAG, NAME)
648 #include "clang/StaticAnalyzer/Core/Analyses.def"
649 .Default(NumInliningModes);
650 if (Value == NumInliningModes) {
651 Diags.Report(diag::err_drv_invalid_value)
652 << A->getAsString(Args) << Name;
653 Success = false;
654 } else {
655 Opts.InliningMode = Value;
656 }
657 }
658
659 Opts.CheckersAndPackages.clear();
660 for (const Arg *A :
661 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) {
662 A->claim();
663 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker;
664 // We can have a list of comma separated checker names, e.g:
665 // '-analyzer-checker=cocoa,unix'
666 StringRef CheckerAndPackageList = A->getValue();
667 SmallVector<StringRef, 16> CheckersAndPackages;
668 CheckerAndPackageList.split(CheckersAndPackages, ",");
669 for (const StringRef &CheckerOrPackage : CheckersAndPackages)
670 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage),
671 IsEnabled);
672 }
673
674 // Go through the analyzer configuration options.
675 for (const auto *A : Args.filtered(OPT_analyzer_config)) {
676
677 // We can have a list of comma separated config names, e.g:
678 // '-analyzer-config key1=val1,key2=val2'
679 StringRef configList = A->getValue();
680 SmallVector<StringRef, 4> configVals;
681 configList.split(configVals, ",");
682 for (const auto &configVal : configVals) {
683 StringRef key, val;
684 std::tie(key, val) = configVal.split("=");
685 if (val.empty()) {
686 Diags.Report(SourceLocation(),
687 diag::err_analyzer_config_no_value) << configVal;
688 Success = false;
689 break;
690 }
691 if (val.find('=') != StringRef::npos) {
692 Diags.Report(SourceLocation(),
693 diag::err_analyzer_config_multiple_values)
694 << configVal;
695 Success = false;
696 break;
697 }
698
699 // TODO: Check checker options too, possibly in CheckerRegistry.
700 // Leave unknown non-checker configs unclaimed.
701 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) {
702 if (Opts.ShouldEmitErrorsOnInvalidConfigValue)
703 Diags.Report(diag::err_analyzer_config_unknown) << key;
704 continue;
705 }
706
707 A->claim();
708 Opts.Config[key] = std::string(val);
709 }
710 }
711
712 if (Opts.ShouldEmitErrorsOnInvalidConfigValue)
713 parseAnalyzerConfigs(Opts, &Diags);
714 else
715 parseAnalyzerConfigs(Opts, nullptr);
716
717 llvm::raw_string_ostream os(Opts.FullCompilerInvocation);
718 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) {
719 if (i != 0)
720 os << " ";
721 os << Args.getArgString(i);
722 }
723 os.flush();
724
725 return Success;
726 }
727
getStringOption(AnalyzerOptions::ConfigTable & Config,StringRef OptionName,StringRef DefaultVal)728 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config,
729 StringRef OptionName, StringRef DefaultVal) {
730 return Config.insert({OptionName, std::string(DefaultVal)}).first->second;
731 }
732
initOption(AnalyzerOptions::ConfigTable & Config,DiagnosticsEngine * Diags,StringRef & OptionField,StringRef Name,StringRef DefaultVal)733 static void initOption(AnalyzerOptions::ConfigTable &Config,
734 DiagnosticsEngine *Diags,
735 StringRef &OptionField, StringRef Name,
736 StringRef DefaultVal) {
737 // String options may be known to invalid (e.g. if the expected string is a
738 // file name, but the file does not exist), those will have to be checked in
739 // parseConfigs.
740 OptionField = getStringOption(Config, Name, DefaultVal);
741 }
742
initOption(AnalyzerOptions::ConfigTable & Config,DiagnosticsEngine * Diags,bool & OptionField,StringRef Name,bool DefaultVal)743 static void initOption(AnalyzerOptions::ConfigTable &Config,
744 DiagnosticsEngine *Diags,
745 bool &OptionField, StringRef Name, bool DefaultVal) {
746 auto PossiblyInvalidVal = llvm::StringSwitch<Optional<bool>>(
747 getStringOption(Config, Name, (DefaultVal ? "true" : "false")))
748 .Case("true", true)
749 .Case("false", false)
750 .Default(None);
751
752 if (!PossiblyInvalidVal) {
753 if (Diags)
754 Diags->Report(diag::err_analyzer_config_invalid_input)
755 << Name << "a boolean";
756 else
757 OptionField = DefaultVal;
758 } else
759 OptionField = PossiblyInvalidVal.getValue();
760 }
761
initOption(AnalyzerOptions::ConfigTable & Config,DiagnosticsEngine * Diags,unsigned & OptionField,StringRef Name,unsigned DefaultVal)762 static void initOption(AnalyzerOptions::ConfigTable &Config,
763 DiagnosticsEngine *Diags,
764 unsigned &OptionField, StringRef Name,
765 unsigned DefaultVal) {
766
767 OptionField = DefaultVal;
768 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal))
769 .getAsInteger(0, OptionField);
770 if (Diags && HasFailed)
771 Diags->Report(diag::err_analyzer_config_invalid_input)
772 << Name << "an unsigned";
773 }
774
parseAnalyzerConfigs(AnalyzerOptions & AnOpts,DiagnosticsEngine * Diags)775 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
776 DiagnosticsEngine *Diags) {
777 // TODO: There's no need to store the entire configtable, it'd be plenty
778 // enough tostore checker options.
779
780 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \
781 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL);
782
783 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \
784 SHALLOW_VAL, DEEP_VAL) \
785 switch (AnOpts.getUserMode()) { \
786 case UMK_Shallow: \
787 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, SHALLOW_VAL); \
788 break; \
789 case UMK_Deep: \
790 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEEP_VAL); \
791 break; \
792 } \
793
794 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
795 #undef ANALYZER_OPTION
796 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE
797
798 // At this point, AnalyzerOptions is configured. Let's validate some options.
799
800 // FIXME: Here we try to validate the silenced checkers or packages are valid.
801 // The current approach only validates the registered checkers which does not
802 // contain the runtime enabled checkers and optimally we would validate both.
803 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) {
804 std::vector<StringRef> Checkers =
805 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true);
806 std::vector<StringRef> Packages =
807 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true);
808
809 SmallVector<StringRef, 16> CheckersAndPackages;
810 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";");
811
812 for (const StringRef &CheckerOrPackage : CheckersAndPackages) {
813 if (Diags) {
814 bool IsChecker = CheckerOrPackage.contains('.');
815 bool IsValidName =
816 IsChecker
817 ? llvm::find(Checkers, CheckerOrPackage) != Checkers.end()
818 : llvm::find(Packages, CheckerOrPackage) != Packages.end();
819
820 if (!IsValidName)
821 Diags->Report(diag::err_unknown_analyzer_checker_or_package)
822 << CheckerOrPackage;
823 }
824
825 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage);
826 }
827 }
828
829 if (!Diags)
830 return;
831
832 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions)
833 Diags->Report(diag::err_analyzer_config_invalid_input)
834 << "track-conditions-debug" << "'track-conditions' to also be enabled";
835
836 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir))
837 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir"
838 << "a filename";
839
840 if (!AnOpts.ModelPath.empty() &&
841 !llvm::sys::fs::is_directory(AnOpts.ModelPath))
842 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path"
843 << "a filename";
844 }
845
846 /// Create a new Regex instance out of the string value in \p RpassArg.
847 /// It returns a pointer to the newly generated Regex instance.
848 static std::shared_ptr<llvm::Regex>
GenerateOptimizationRemarkRegex(DiagnosticsEngine & Diags,ArgList & Args,Arg * RpassArg)849 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
850 Arg *RpassArg) {
851 StringRef Val = RpassArg->getValue();
852 std::string RegexError;
853 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
854 if (!Pattern->isValid(RegexError)) {
855 Diags.Report(diag::err_drv_optimization_remark_pattern)
856 << RegexError << RpassArg->getAsString(Args);
857 Pattern.reset();
858 }
859 return Pattern;
860 }
861
parseDiagnosticLevelMask(StringRef FlagName,const std::vector<std::string> & Levels,DiagnosticsEngine & Diags,DiagnosticLevelMask & M)862 static bool parseDiagnosticLevelMask(StringRef FlagName,
863 const std::vector<std::string> &Levels,
864 DiagnosticsEngine &Diags,
865 DiagnosticLevelMask &M) {
866 bool Success = true;
867 for (const auto &Level : Levels) {
868 DiagnosticLevelMask const PM =
869 llvm::StringSwitch<DiagnosticLevelMask>(Level)
870 .Case("note", DiagnosticLevelMask::Note)
871 .Case("remark", DiagnosticLevelMask::Remark)
872 .Case("warning", DiagnosticLevelMask::Warning)
873 .Case("error", DiagnosticLevelMask::Error)
874 .Default(DiagnosticLevelMask::None);
875 if (PM == DiagnosticLevelMask::None) {
876 Success = false;
877 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level;
878 }
879 M = M | PM;
880 }
881 return Success;
882 }
883
parseSanitizerKinds(StringRef FlagName,const std::vector<std::string> & Sanitizers,DiagnosticsEngine & Diags,SanitizerSet & S)884 static void parseSanitizerKinds(StringRef FlagName,
885 const std::vector<std::string> &Sanitizers,
886 DiagnosticsEngine &Diags, SanitizerSet &S) {
887 for (const auto &Sanitizer : Sanitizers) {
888 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false);
889 if (K == SanitizerMask())
890 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
891 else
892 S.set(K, true);
893 }
894 }
895
parseXRayInstrumentationBundle(StringRef FlagName,StringRef Bundle,ArgList & Args,DiagnosticsEngine & D,XRayInstrSet & S)896 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle,
897 ArgList &Args, DiagnosticsEngine &D,
898 XRayInstrSet &S) {
899 llvm::SmallVector<StringRef, 2> BundleParts;
900 llvm::SplitString(Bundle, BundleParts, ",");
901 for (const auto &B : BundleParts) {
902 auto Mask = parseXRayInstrValue(B);
903 if (Mask == XRayInstrKind::None)
904 if (B != "none")
905 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle;
906 else
907 S.Mask = Mask;
908 else if (Mask == XRayInstrKind::All)
909 S.Mask = Mask;
910 else
911 S.set(Mask, true);
912 }
913 }
914
915 // Set the profile kind using fprofile-instrument-use-path.
setPGOUseInstrumentor(CodeGenOptions & Opts,const Twine & ProfileName)916 static void setPGOUseInstrumentor(CodeGenOptions &Opts,
917 const Twine &ProfileName) {
918 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName);
919 // In error, return silently and let Clang PGOUse report the error message.
920 if (auto E = ReaderOrErr.takeError()) {
921 llvm::consumeError(std::move(E));
922 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
923 return;
924 }
925 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader =
926 std::move(ReaderOrErr.get());
927 if (PGOReader->isIRLevelProfile()) {
928 if (PGOReader->hasCSIRLevelProfile())
929 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr);
930 else
931 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr);
932 } else
933 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
934 }
935
ParseCodeGenArgs(CodeGenOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags,const llvm::Triple & T,const std::string & OutputFile,const LangOptions & LangOptsRef)936 bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
937 InputKind IK,
938 DiagnosticsEngine &Diags,
939 const llvm::Triple &T,
940 const std::string &OutputFile,
941 const LangOptions &LangOptsRef) {
942 bool Success = true;
943
944 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
945 // TODO: This could be done in Driver
946 unsigned MaxOptLevel = 3;
947 if (OptimizationLevel > MaxOptLevel) {
948 // If the optimization level is not supported, fall back on the default
949 // optimization
950 Diags.Report(diag::warn_drv_optimization_value)
951 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
952 OptimizationLevel = MaxOptLevel;
953 }
954 Opts.OptimizationLevel = OptimizationLevel;
955
956 // The key paths of codegen options defined in Options.td start with
957 // "CodeGenOpts.". Let's provide the expected variable name and type.
958 CodeGenOptions &CodeGenOpts = Opts;
959 // Some codegen options depend on language options. Let's provide the expected
960 // variable name and type.
961 const LangOptions *LangOpts = &LangOptsRef;
962
963 #define CODEGEN_OPTION_WITH_MARSHALLING( \
964 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
965 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
966 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
967 MERGER, EXTRACTOR, TABLE_INDEX) \
968 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \
969 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
970 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \
971 MERGER, TABLE_INDEX)
972 #include "clang/Driver/Options.inc"
973 #undef CODEGEN_OPTION_WITH_MARSHALLING
974
975 // At O0 we want to fully disable inlining outside of cases marked with
976 // 'alwaysinline' that are required for correctness.
977 Opts.setInlining((Opts.OptimizationLevel == 0)
978 ? CodeGenOptions::OnlyAlwaysInlining
979 : CodeGenOptions::NormalInlining);
980 // Explicit inlining flags can disable some or all inlining even at
981 // optimization levels above zero.
982 if (Arg *InlineArg = Args.getLastArg(
983 options::OPT_finline_functions, options::OPT_finline_hint_functions,
984 options::OPT_fno_inline_functions, options::OPT_fno_inline)) {
985 if (Opts.OptimizationLevel > 0) {
986 const Option &InlineOpt = InlineArg->getOption();
987 if (InlineOpt.matches(options::OPT_finline_functions))
988 Opts.setInlining(CodeGenOptions::NormalInlining);
989 else if (InlineOpt.matches(options::OPT_finline_hint_functions))
990 Opts.setInlining(CodeGenOptions::OnlyHintInlining);
991 else
992 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining);
993 }
994 }
995
996 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to
997 // -fdirect-access-external-data.
998 Opts.DirectAccessExternalData =
999 Args.hasArg(OPT_fdirect_access_external_data) ||
1000 (!Args.hasArg(OPT_fno_direct_access_external_data) &&
1001 getLastArgIntValue(Args, OPT_pic_level, 0, Diags) == 0);
1002
1003 // If -fuse-ctor-homing is set and limited debug info is already on, then use
1004 // constructor homing.
1005 if (Args.getLastArg(OPT_fuse_ctor_homing))
1006 if (Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo)
1007 Opts.setDebugInfo(codegenoptions::DebugInfoConstructor);
1008
1009 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) {
1010 auto Split = StringRef(Arg).split('=');
1011 Opts.DebugPrefixMap.insert(
1012 {std::string(Split.first), std::string(Split.second)});
1013 }
1014
1015 for (const auto &Arg : Args.getAllArgValues(OPT_fprofile_prefix_map_EQ)) {
1016 auto Split = StringRef(Arg).split('=');
1017 Opts.ProfilePrefixMap.insert(
1018 {std::string(Split.first), std::string(Split.second)});
1019 }
1020
1021 const llvm::Triple::ArchType DebugEntryValueArchs[] = {
1022 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64,
1023 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips,
1024 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el};
1025
1026 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() &&
1027 llvm::is_contained(DebugEntryValueArchs, T.getArch()))
1028 Opts.EmitCallSiteInfo = true;
1029
1030 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) &&
1031 Args.hasArg(OPT_new_struct_path_tbaa);
1032 Opts.OptimizeSize = getOptimizationLevelSize(Args);
1033 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
1034 Args.hasArg(OPT_ffreestanding));
1035 if (Opts.SimplifyLibCalls)
1036 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
1037 Opts.UnrollLoops =
1038 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
1039 (Opts.OptimizationLevel > 1));
1040 Opts.BinutilsVersion =
1041 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ));
1042
1043 Opts.DebugNameTable = static_cast<unsigned>(
1044 Args.hasArg(OPT_ggnu_pubnames)
1045 ? llvm::DICompileUnit::DebugNameTableKind::GNU
1046 : Args.hasArg(OPT_gpubnames)
1047 ? llvm::DICompileUnit::DebugNameTableKind::Default
1048 : llvm::DICompileUnit::DebugNameTableKind::None);
1049
1050 if (!Opts.ProfileInstrumentUsePath.empty())
1051 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
1052
1053 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) {
1054 Opts.TimePasses = true;
1055
1056 // -ftime-report= is only for new pass manager.
1057 if (A->getOption().getID() == OPT_ftime_report_EQ) {
1058 if (Opts.LegacyPassManager)
1059 Diags.Report(diag::err_drv_argument_only_allowed_with)
1060 << A->getAsString(Args) << "-fno-legacy-pass-manager";
1061
1062 StringRef Val = A->getValue();
1063 if (Val == "per-pass")
1064 Opts.TimePassesPerRun = false;
1065 else if (Val == "per-pass-run")
1066 Opts.TimePassesPerRun = true;
1067 else
1068 Diags.Report(diag::err_drv_invalid_value)
1069 << A->getAsString(Args) << A->getValue();
1070 }
1071 }
1072
1073 // Basic Block Sections implies Function Sections.
1074 Opts.FunctionSections =
1075 Args.hasArg(OPT_ffunction_sections) ||
1076 (Opts.BBSections != "none" && Opts.BBSections != "labels");
1077
1078 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
1079 Opts.PrepareForThinLTO = false;
1080 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) {
1081 StringRef S = A->getValue();
1082 if (S == "thin")
1083 Opts.PrepareForThinLTO = true;
1084 else if (S != "full")
1085 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S;
1086 }
1087 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
1088 if (IK.getLanguage() != Language::LLVM_IR)
1089 Diags.Report(diag::err_drv_argument_only_allowed_with)
1090 << A->getAsString(Args) << "-x ir";
1091 Opts.ThinLTOIndexFile =
1092 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ));
1093 }
1094 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ))
1095 Opts.SaveTempsFilePrefix =
1096 llvm::StringSwitch<std::string>(A->getValue())
1097 .Case("obj", OutputFile)
1098 .Default(llvm::sys::path::filename(OutputFile).str());
1099
1100 // The memory profile runtime appends the pid to make this name more unique.
1101 const char *MemProfileBasename = "memprof.profraw";
1102 if (Args.hasArg(OPT_fmemory_profile_EQ)) {
1103 SmallString<128> Path(
1104 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ)));
1105 llvm::sys::path::append(Path, MemProfileBasename);
1106 Opts.MemoryProfileOutput = std::string(Path);
1107 } else if (Args.hasArg(OPT_fmemory_profile))
1108 Opts.MemoryProfileOutput = MemProfileBasename;
1109
1110 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
1111 if (Args.hasArg(OPT_coverage_version_EQ)) {
1112 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
1113 if (CoverageVersion.size() != 4) {
1114 Diags.Report(diag::err_drv_invalid_value)
1115 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
1116 << CoverageVersion;
1117 } else {
1118 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
1119 }
1120 }
1121 }
1122 // FIXME: For backend options that are not yet recorded as function
1123 // attributes in the IR, keep track of them so we can embed them in a
1124 // separate data section and use them when building the bitcode.
1125 for (const auto &A : Args) {
1126 // Do not encode output and input.
1127 if (A->getOption().getID() == options::OPT_o ||
1128 A->getOption().getID() == options::OPT_INPUT ||
1129 A->getOption().getID() == options::OPT_x ||
1130 A->getOption().getID() == options::OPT_fembed_bitcode ||
1131 A->getOption().matches(options::OPT_W_Group))
1132 continue;
1133 ArgStringList ASL;
1134 A->render(Args, ASL);
1135 for (const auto &arg : ASL) {
1136 StringRef ArgStr(arg);
1137 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
1138 // using \00 to separate each commandline options.
1139 Opts.CmdArgs.push_back('\0');
1140 }
1141 }
1142
1143 auto XRayInstrBundles =
1144 Args.getAllArgValues(OPT_fxray_instrumentation_bundle);
1145 if (XRayInstrBundles.empty())
1146 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All;
1147 else
1148 for (const auto &A : XRayInstrBundles)
1149 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args,
1150 Diags, Opts.XRayInstrumentationBundle);
1151
1152 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
1153 StringRef Name = A->getValue();
1154 if (Name == "full") {
1155 Opts.CFProtectionReturn = 1;
1156 Opts.CFProtectionBranch = 1;
1157 } else if (Name == "return")
1158 Opts.CFProtectionReturn = 1;
1159 else if (Name == "branch")
1160 Opts.CFProtectionBranch = 1;
1161 else if (Name != "none") {
1162 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1163 Success = false;
1164 }
1165 }
1166
1167 for (auto *A :
1168 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) {
1169 CodeGenOptions::BitcodeFileToLink F;
1170 F.Filename = A->getValue();
1171 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) {
1172 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
1173 // When linking CUDA bitcode, propagate function attributes so that
1174 // e.g. libdevice gets fast-math attrs if we're building with fast-math.
1175 F.PropagateAttrs = true;
1176 F.Internalize = true;
1177 }
1178 Opts.LinkBitcodeFiles.push_back(F);
1179 }
1180
1181 if (Args.getLastArg(OPT_femulated_tls) ||
1182 Args.getLastArg(OPT_fno_emulated_tls)) {
1183 Opts.ExplicitEmulatedTLS = true;
1184 }
1185
1186 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) {
1187 StringRef Val = A->getValue();
1188 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val);
1189 if (!Opts.FPDenormalMode.isValid())
1190 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
1191 }
1192
1193 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) {
1194 StringRef Val = A->getValue();
1195 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val);
1196 if (!Opts.FP32DenormalMode.isValid())
1197 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
1198 }
1199
1200 // X86_32 has -fppc-struct-return and -freg-struct-return.
1201 // PPC32 has -maix-struct-return and -msvr4-struct-return.
1202 if (Arg *A =
1203 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return,
1204 OPT_maix_struct_return, OPT_msvr4_struct_return)) {
1205 // TODO: We might want to consider enabling these options on AIX in the
1206 // future.
1207 if (T.isOSAIX())
1208 Diags.Report(diag::err_drv_unsupported_opt_for_target)
1209 << A->getSpelling() << T.str();
1210
1211 const Option &O = A->getOption();
1212 if (O.matches(OPT_fpcc_struct_return) ||
1213 O.matches(OPT_maix_struct_return)) {
1214 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
1215 } else {
1216 assert(O.matches(OPT_freg_struct_return) ||
1217 O.matches(OPT_msvr4_struct_return));
1218 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
1219 }
1220 }
1221
1222 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility) ||
1223 !Args.hasArg(OPT_fvisibility)))
1224 Opts.IgnoreXCOFFVisibility = 1;
1225
1226 if (Arg *A =
1227 Args.getLastArg(OPT_mabi_EQ_vec_default, OPT_mabi_EQ_vec_extabi)) {
1228 if (!T.isOSAIX())
1229 Diags.Report(diag::err_drv_unsupported_opt_for_target)
1230 << A->getSpelling() << T.str();
1231
1232 const Option &O = A->getOption();
1233 if (O.matches(OPT_mabi_EQ_vec_default))
1234 Diags.Report(diag::err_aix_default_altivec_abi)
1235 << A->getSpelling() << T.str();
1236 else {
1237 assert(O.matches(OPT_mabi_EQ_vec_extabi));
1238 Opts.EnableAIXExtendedAltivecABI = 1;
1239 }
1240 }
1241
1242 bool NeedLocTracking = false;
1243
1244 if (!Opts.OptRecordFile.empty())
1245 NeedLocTracking = true;
1246
1247 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) {
1248 Opts.OptRecordPasses = A->getValue();
1249 NeedLocTracking = true;
1250 }
1251
1252 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) {
1253 Opts.OptRecordFormat = A->getValue();
1254 NeedLocTracking = true;
1255 }
1256
1257 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
1258 Opts.OptimizationRemarkPattern =
1259 GenerateOptimizationRemarkRegex(Diags, Args, A);
1260 NeedLocTracking = true;
1261 }
1262
1263 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
1264 Opts.OptimizationRemarkMissedPattern =
1265 GenerateOptimizationRemarkRegex(Diags, Args, A);
1266 NeedLocTracking = true;
1267 }
1268
1269 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
1270 Opts.OptimizationRemarkAnalysisPattern =
1271 GenerateOptimizationRemarkRegex(Diags, Args, A);
1272 NeedLocTracking = true;
1273 }
1274
1275 bool UsingSampleProfile = !Opts.SampleProfileFile.empty();
1276 bool UsingProfile = UsingSampleProfile ||
1277 (Opts.getProfileUse() != CodeGenOptions::ProfileNone);
1278
1279 if (Opts.DiagnosticsWithHotness && !UsingProfile &&
1280 // An IR file will contain PGO as metadata
1281 IK.getLanguage() != Language::LLVM_IR)
1282 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
1283 << "-fdiagnostics-show-hotness";
1284
1285 // Parse remarks hotness threshold. Valid value is either integer or 'auto'.
1286 if (auto *arg =
1287 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
1288 auto ResultOrErr =
1289 llvm::remarks::parseHotnessThresholdOption(arg->getValue());
1290
1291 if (!ResultOrErr) {
1292 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold)
1293 << "-fdiagnostics-hotness-threshold=";
1294 } else {
1295 Opts.DiagnosticsHotnessThreshold = *ResultOrErr;
1296 if ((!Opts.DiagnosticsHotnessThreshold.hasValue() ||
1297 Opts.DiagnosticsHotnessThreshold.getValue() > 0) &&
1298 !UsingProfile)
1299 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
1300 << "-fdiagnostics-hotness-threshold=";
1301 }
1302 }
1303
1304 // If the user requested to use a sample profile for PGO, then the
1305 // backend will need to track source location information so the profile
1306 // can be incorporated into the IR.
1307 if (UsingSampleProfile)
1308 NeedLocTracking = true;
1309
1310 // If the user requested a flag that requires source locations available in
1311 // the backend, make sure that the backend tracks source location information.
1312 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
1313 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
1314
1315 // Parse -fsanitize-recover= arguments.
1316 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
1317 parseSanitizerKinds("-fsanitize-recover=",
1318 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
1319 Opts.SanitizeRecover);
1320 parseSanitizerKinds("-fsanitize-trap=",
1321 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
1322 Opts.SanitizeTrap);
1323
1324 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true);
1325
1326 if (Args.hasArg(options::OPT_ffinite_loops))
1327 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always;
1328 else if (Args.hasArg(options::OPT_fno_finite_loops))
1329 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never;
1330 return Success;
1331 }
1332
ParseDependencyOutputArgs(DependencyOutputOptions & Opts,ArgList & Args)1333 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1334 ArgList &Args) {
1335 if (Args.hasArg(OPT_show_includes)) {
1336 // Writing both /showIncludes and preprocessor output to stdout
1337 // would produce interleaved output, so use stderr for /showIncludes.
1338 // This behaves the same as cl.exe, when /E, /EP or /P are passed.
1339 if (Args.hasArg(options::OPT_E) || Args.hasArg(options::OPT_P))
1340 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr;
1341 else
1342 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout;
1343 } else {
1344 Opts.ShowIncludesDest = ShowIncludesDestination::None;
1345 }
1346 // Add sanitizer blacklists as extra dependencies.
1347 // They won't be discovered by the regular preprocessor, so
1348 // we let make / ninja to know about this implicit dependency.
1349 if (!Args.hasArg(OPT_fno_sanitize_blacklist)) {
1350 for (const auto *A : Args.filtered(OPT_fsanitize_blacklist)) {
1351 StringRef Val = A->getValue();
1352 if (Val.find('=') == StringRef::npos)
1353 Opts.ExtraDeps.push_back(std::string(Val));
1354 }
1355 if (Opts.IncludeSystemHeaders) {
1356 for (const auto *A : Args.filtered(OPT_fsanitize_system_blacklist)) {
1357 StringRef Val = A->getValue();
1358 if (Val.find('=') == StringRef::npos)
1359 Opts.ExtraDeps.push_back(std::string(Val));
1360 }
1361 }
1362 }
1363
1364 // -fprofile-list= dependencies.
1365 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ))
1366 Opts.ExtraDeps.push_back(Filename);
1367
1368 // Propagate the extra dependencies.
1369 for (const auto *A : Args.filtered(OPT_fdepfile_entry)) {
1370 Opts.ExtraDeps.push_back(A->getValue());
1371 }
1372
1373 // Only the -fmodule-file=<file> form.
1374 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
1375 StringRef Val = A->getValue();
1376 if (Val.find('=') == StringRef::npos)
1377 Opts.ExtraDeps.push_back(std::string(Val));
1378 }
1379 }
1380
parseShowColorsArgs(const ArgList & Args,bool DefaultColor)1381 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) {
1382 // Color diagnostics default to auto ("on" if terminal supports) in the driver
1383 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
1384 // Support both clang's -f[no-]color-diagnostics and gcc's
1385 // -f[no-]diagnostics-colors[=never|always|auto].
1386 enum {
1387 Colors_On,
1388 Colors_Off,
1389 Colors_Auto
1390 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off;
1391 for (auto *A : Args) {
1392 const Option &O = A->getOption();
1393 if (O.matches(options::OPT_fcolor_diagnostics) ||
1394 O.matches(options::OPT_fdiagnostics_color)) {
1395 ShowColors = Colors_On;
1396 } else if (O.matches(options::OPT_fno_color_diagnostics) ||
1397 O.matches(options::OPT_fno_diagnostics_color)) {
1398 ShowColors = Colors_Off;
1399 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
1400 StringRef Value(A->getValue());
1401 if (Value == "always")
1402 ShowColors = Colors_On;
1403 else if (Value == "never")
1404 ShowColors = Colors_Off;
1405 else if (Value == "auto")
1406 ShowColors = Colors_Auto;
1407 }
1408 }
1409 return ShowColors == Colors_On ||
1410 (ShowColors == Colors_Auto &&
1411 llvm::sys::Process::StandardErrHasColors());
1412 }
1413
checkVerifyPrefixes(const std::vector<std::string> & VerifyPrefixes,DiagnosticsEngine & Diags)1414 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes,
1415 DiagnosticsEngine &Diags) {
1416 bool Success = true;
1417 for (const auto &Prefix : VerifyPrefixes) {
1418 // Every prefix must start with a letter and contain only alphanumeric
1419 // characters, hyphens, and underscores.
1420 auto BadChar = llvm::find_if(Prefix, [](char C) {
1421 return !isAlphanumeric(C) && C != '-' && C != '_';
1422 });
1423 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) {
1424 Success = false;
1425 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix;
1426 Diags.Report(diag::note_drv_verify_prefix_spelling);
1427 }
1428 }
1429 return Success;
1430 }
1431
parseSimpleArgs(const ArgList & Args,DiagnosticsEngine & Diags)1432 bool CompilerInvocation::parseSimpleArgs(const ArgList &Args,
1433 DiagnosticsEngine &Diags) {
1434 bool Success = true;
1435
1436 #define OPTION_WITH_MARSHALLING( \
1437 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
1438 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
1439 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
1440 MERGER, EXTRACTOR, TABLE_INDEX) \
1441 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \
1442 SHOULD_PARSE, this->KEYPATH, DEFAULT_VALUE, \
1443 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \
1444 MERGER, TABLE_INDEX)
1445 #include "clang/Driver/Options.inc"
1446 #undef OPTION_WITH_MARSHALLING
1447
1448 return Success;
1449 }
1450
ParseDiagnosticArgs(DiagnosticOptions & Opts,ArgList & Args,DiagnosticsEngine * Diags,bool DefaultDiagColor)1451 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1452 DiagnosticsEngine *Diags,
1453 bool DefaultDiagColor) {
1454 Optional<DiagnosticsEngine> IgnoringDiags;
1455 if (!Diags) {
1456 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(),
1457 new IgnoringDiagConsumer());
1458 Diags = &*IgnoringDiags;
1459 }
1460
1461 // The key paths of diagnostic options defined in Options.td start with
1462 // "DiagnosticOpts->". Let's provide the expected variable name and type.
1463 DiagnosticOptions *DiagnosticOpts = &Opts;
1464 bool Success = true;
1465
1466 #define DIAG_OPTION_WITH_MARSHALLING( \
1467 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
1468 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
1469 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
1470 MERGER, EXTRACTOR, TABLE_INDEX) \
1471 PARSE_OPTION_WITH_MARSHALLING(Args, *Diags, Success, ID, FLAGS, PARAM, \
1472 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
1473 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \
1474 MERGER, TABLE_INDEX)
1475 #include "clang/Driver/Options.inc"
1476 #undef DIAG_OPTION_WITH_MARSHALLING
1477
1478 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes);
1479
1480 if (Arg *A =
1481 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
1482 Opts.DiagnosticSerializationFile = A->getValue();
1483 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor);
1484
1485 if (Args.getLastArgValue(OPT_fdiagnostics_format) == "msvc-fallback")
1486 Opts.CLFallbackMode = true;
1487
1488 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ);
1489 if (Args.hasArg(OPT_verify))
1490 Opts.VerifyPrefixes.push_back("expected");
1491 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and
1492 // then sort it to prepare for fast lookup using std::binary_search.
1493 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags)) {
1494 Opts.VerifyDiagnostics = false;
1495 Success = false;
1496 }
1497 else
1498 llvm::sort(Opts.VerifyPrefixes);
1499 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
1500 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=",
1501 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ),
1502 *Diags, DiagMask);
1503 if (Args.hasArg(OPT_verify_ignore_unexpected))
1504 DiagMask = DiagnosticLevelMask::All;
1505 Opts.setVerifyIgnoreUnexpected(DiagMask);
1506 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1507 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1508 Diags->Report(diag::warn_ignoring_ftabstop_value)
1509 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1510 }
1511
1512 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
1513 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
1514
1515 return Success;
1516 }
1517
1518 /// Parse the argument to the -ftest-module-file-extension
1519 /// command-line argument.
1520 ///
1521 /// \returns true on error, false on success.
parseTestModuleFileExtensionArg(StringRef Arg,std::string & BlockName,unsigned & MajorVersion,unsigned & MinorVersion,bool & Hashed,std::string & UserInfo)1522 static bool parseTestModuleFileExtensionArg(StringRef Arg,
1523 std::string &BlockName,
1524 unsigned &MajorVersion,
1525 unsigned &MinorVersion,
1526 bool &Hashed,
1527 std::string &UserInfo) {
1528 SmallVector<StringRef, 5> Args;
1529 Arg.split(Args, ':', 5);
1530 if (Args.size() < 5)
1531 return true;
1532
1533 BlockName = std::string(Args[0]);
1534 if (Args[1].getAsInteger(10, MajorVersion)) return true;
1535 if (Args[2].getAsInteger(10, MinorVersion)) return true;
1536 if (Args[3].getAsInteger(2, Hashed)) return true;
1537 if (Args.size() > 4)
1538 UserInfo = std::string(Args[4]);
1539 return false;
1540 }
1541
ParseFrontendArgs(FrontendOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags,bool & IsHeaderFile)1542 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1543 DiagnosticsEngine &Diags,
1544 bool &IsHeaderFile) {
1545 Opts.ProgramAction = frontend::ParseSyntaxOnly;
1546 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1547 switch (A->getOption().getID()) {
1548 default:
1549 llvm_unreachable("Invalid option in group!");
1550 case OPT_ast_list:
1551 Opts.ProgramAction = frontend::ASTDeclList; break;
1552 case OPT_ast_dump_all_EQ:
1553 case OPT_ast_dump_EQ: {
1554 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
1555 .CaseLower("default", ADOF_Default)
1556 .CaseLower("json", ADOF_JSON)
1557 .Default(std::numeric_limits<unsigned>::max());
1558
1559 if (Val != std::numeric_limits<unsigned>::max())
1560 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val);
1561 else {
1562 Diags.Report(diag::err_drv_invalid_value)
1563 << A->getAsString(Args) << A->getValue();
1564 Opts.ASTDumpFormat = ADOF_Default;
1565 }
1566 LLVM_FALLTHROUGH;
1567 }
1568 case OPT_ast_dump:
1569 case OPT_ast_dump_all:
1570 case OPT_ast_dump_lookups:
1571 case OPT_ast_dump_decl_types:
1572 Opts.ProgramAction = frontend::ASTDump; break;
1573 case OPT_ast_print:
1574 Opts.ProgramAction = frontend::ASTPrint; break;
1575 case OPT_ast_view:
1576 Opts.ProgramAction = frontend::ASTView; break;
1577 case OPT_compiler_options_dump:
1578 Opts.ProgramAction = frontend::DumpCompilerOptions; break;
1579 case OPT_dump_raw_tokens:
1580 Opts.ProgramAction = frontend::DumpRawTokens; break;
1581 case OPT_dump_tokens:
1582 Opts.ProgramAction = frontend::DumpTokens; break;
1583 case OPT_S:
1584 Opts.ProgramAction = frontend::EmitAssembly; break;
1585 case OPT_emit_llvm_bc:
1586 Opts.ProgramAction = frontend::EmitBC; break;
1587 case OPT_emit_html:
1588 Opts.ProgramAction = frontend::EmitHTML; break;
1589 case OPT_emit_llvm:
1590 Opts.ProgramAction = frontend::EmitLLVM; break;
1591 case OPT_emit_llvm_only:
1592 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1593 case OPT_emit_codegen_only:
1594 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1595 case OPT_emit_obj:
1596 Opts.ProgramAction = frontend::EmitObj; break;
1597 case OPT_fixit_EQ:
1598 Opts.FixItSuffix = A->getValue();
1599 LLVM_FALLTHROUGH;
1600 case OPT_fixit:
1601 Opts.ProgramAction = frontend::FixIt; break;
1602 case OPT_emit_module:
1603 Opts.ProgramAction = frontend::GenerateModule; break;
1604 case OPT_emit_module_interface:
1605 Opts.ProgramAction = frontend::GenerateModuleInterface; break;
1606 case OPT_emit_header_module:
1607 Opts.ProgramAction = frontend::GenerateHeaderModule; break;
1608 case OPT_emit_pch:
1609 Opts.ProgramAction = frontend::GeneratePCH; break;
1610 case OPT_emit_interface_stubs: {
1611 StringRef ArgStr =
1612 Args.hasArg(OPT_interface_stub_version_EQ)
1613 ? Args.getLastArgValue(OPT_interface_stub_version_EQ)
1614 : "experimental-ifs-v2";
1615 if (ArgStr == "experimental-yaml-elf-v1" ||
1616 ArgStr == "experimental-ifs-v1" ||
1617 ArgStr == "experimental-tapi-elf-v1") {
1618 std::string ErrorMessage =
1619 "Invalid interface stub format: " + ArgStr.str() +
1620 " is deprecated.";
1621 Diags.Report(diag::err_drv_invalid_value)
1622 << "Must specify a valid interface stub format type, ie: "
1623 "-interface-stub-version=experimental-ifs-v2"
1624 << ErrorMessage;
1625 } else if (!ArgStr.startswith("experimental-ifs-")) {
1626 std::string ErrorMessage =
1627 "Invalid interface stub format: " + ArgStr.str() + ".";
1628 Diags.Report(diag::err_drv_invalid_value)
1629 << "Must specify a valid interface stub format type, ie: "
1630 "-interface-stub-version=experimental-ifs-v2"
1631 << ErrorMessage;
1632 } else {
1633 Opts.ProgramAction = frontend::GenerateInterfaceStubs;
1634 }
1635 break;
1636 }
1637 case OPT_init_only:
1638 Opts.ProgramAction = frontend::InitOnly; break;
1639 case OPT_fsyntax_only:
1640 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1641 case OPT_module_file_info:
1642 Opts.ProgramAction = frontend::ModuleFileInfo; break;
1643 case OPT_verify_pch:
1644 Opts.ProgramAction = frontend::VerifyPCH; break;
1645 case OPT_print_preamble:
1646 Opts.ProgramAction = frontend::PrintPreamble; break;
1647 case OPT_E:
1648 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1649 case OPT_templight_dump:
1650 Opts.ProgramAction = frontend::TemplightDump; break;
1651 case OPT_rewrite_macros:
1652 Opts.ProgramAction = frontend::RewriteMacros; break;
1653 case OPT_rewrite_objc:
1654 Opts.ProgramAction = frontend::RewriteObjC; break;
1655 case OPT_rewrite_test:
1656 Opts.ProgramAction = frontend::RewriteTest; break;
1657 case OPT_analyze:
1658 Opts.ProgramAction = frontend::RunAnalysis; break;
1659 case OPT_migrate:
1660 Opts.ProgramAction = frontend::MigrateSource; break;
1661 case OPT_Eonly:
1662 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1663 case OPT_print_dependency_directives_minimized_source:
1664 Opts.ProgramAction =
1665 frontend::PrintDependencyDirectivesSourceMinimizerOutput;
1666 break;
1667 }
1668 }
1669
1670 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1671 Opts.Plugins.emplace_back(A->getValue(0));
1672 Opts.ProgramAction = frontend::PluginAction;
1673 Opts.ActionName = A->getValue();
1674 }
1675 for (const auto *AA : Args.filtered(OPT_plugin_arg))
1676 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
1677
1678 for (const std::string &Arg :
1679 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
1680 std::string BlockName;
1681 unsigned MajorVersion;
1682 unsigned MinorVersion;
1683 bool Hashed;
1684 std::string UserInfo;
1685 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
1686 MinorVersion, Hashed, UserInfo)) {
1687 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
1688
1689 continue;
1690 }
1691
1692 // Add the testing module file extension.
1693 Opts.ModuleFileExtensions.push_back(
1694 std::make_shared<TestModuleFileExtension>(
1695 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo));
1696 }
1697
1698 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1699 Opts.CodeCompletionAt =
1700 ParsedSourceLocation::FromString(A->getValue());
1701 if (Opts.CodeCompletionAt.FileName.empty())
1702 Diags.Report(diag::err_drv_invalid_value)
1703 << A->getAsString(Args) << A->getValue();
1704 }
1705
1706 Opts.Plugins = Args.getAllArgValues(OPT_load);
1707 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ);
1708 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ);
1709 // Only the -fmodule-file=<file> form.
1710 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
1711 StringRef Val = A->getValue();
1712 if (Val.find('=') == StringRef::npos)
1713 Opts.ModuleFiles.push_back(std::string(Val));
1714 }
1715
1716 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule)
1717 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module"
1718 << "-emit-module";
1719
1720 if (Args.hasArg(OPT_aux_target_cpu))
1721 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu));
1722 if (Args.hasArg(OPT_aux_target_feature))
1723 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature);
1724
1725 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1726 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1727 Diags.Report(diag::err_drv_argument_not_allowed_with)
1728 << "ARC migration" << "ObjC migration";
1729 }
1730
1731 InputKind DashX(Language::Unknown);
1732 if (const Arg *A = Args.getLastArg(OPT_x)) {
1733 StringRef XValue = A->getValue();
1734
1735 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'.
1736 // FIXME: Supporting '<lang>-header-cpp-output' would be useful.
1737 bool Preprocessed = XValue.consume_back("-cpp-output");
1738 bool ModuleMap = XValue.consume_back("-module-map");
1739 IsHeaderFile = !Preprocessed && !ModuleMap &&
1740 XValue != "precompiled-header" &&
1741 XValue.consume_back("-header");
1742
1743 // Principal languages.
1744 DashX = llvm::StringSwitch<InputKind>(XValue)
1745 .Case("c", Language::C)
1746 .Case("cl", Language::OpenCL)
1747 .Case("cuda", Language::CUDA)
1748 .Case("hip", Language::HIP)
1749 .Case("c++", Language::CXX)
1750 .Case("objective-c", Language::ObjC)
1751 .Case("objective-c++", Language::ObjCXX)
1752 .Case("renderscript", Language::RenderScript)
1753 .Default(Language::Unknown);
1754
1755 // "objc[++]-cpp-output" is an acceptable synonym for
1756 // "objective-c[++]-cpp-output".
1757 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap)
1758 DashX = llvm::StringSwitch<InputKind>(XValue)
1759 .Case("objc", Language::ObjC)
1760 .Case("objc++", Language::ObjCXX)
1761 .Default(Language::Unknown);
1762
1763 // Some special cases cannot be combined with suffixes.
1764 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile)
1765 DashX = llvm::StringSwitch<InputKind>(XValue)
1766 .Case("cpp-output", InputKind(Language::C).getPreprocessed())
1767 .Case("assembler-with-cpp", Language::Asm)
1768 .Cases("ast", "pcm", "precompiled-header",
1769 InputKind(Language::Unknown, InputKind::Precompiled))
1770 .Case("ir", Language::LLVM_IR)
1771 .Default(Language::Unknown);
1772
1773 if (DashX.isUnknown())
1774 Diags.Report(diag::err_drv_invalid_value)
1775 << A->getAsString(Args) << A->getValue();
1776
1777 if (Preprocessed)
1778 DashX = DashX.getPreprocessed();
1779 if (ModuleMap)
1780 DashX = DashX.withFormat(InputKind::ModuleMap);
1781 }
1782
1783 // '-' is the default input if none is given.
1784 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1785 Opts.Inputs.clear();
1786 if (Inputs.empty())
1787 Inputs.push_back("-");
1788 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1789 InputKind IK = DashX;
1790 if (IK.isUnknown()) {
1791 IK = FrontendOptions::getInputKindForExtension(
1792 StringRef(Inputs[i]).rsplit('.').second);
1793 // FIXME: Warn on this?
1794 if (IK.isUnknown())
1795 IK = Language::C;
1796 // FIXME: Remove this hack.
1797 if (i == 0)
1798 DashX = IK;
1799 }
1800
1801 bool IsSystem = false;
1802
1803 // The -emit-module action implicitly takes a module map.
1804 if (Opts.ProgramAction == frontend::GenerateModule &&
1805 IK.getFormat() == InputKind::Source) {
1806 IK = IK.withFormat(InputKind::ModuleMap);
1807 IsSystem = Opts.IsSystemModule;
1808 }
1809
1810 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem);
1811 }
1812
1813 return DashX;
1814 }
1815
GetResourcesPath(const char * Argv0,void * MainAddr)1816 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1817 void *MainAddr) {
1818 std::string ClangExecutable =
1819 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1820 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR);
1821 }
1822
ParseHeaderSearchArgs(HeaderSearchOptions & Opts,ArgList & Args,const std::string & WorkingDir)1823 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
1824 const std::string &WorkingDir) {
1825 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1826 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1827
1828 // Canonicalize -fmodules-cache-path before storing it.
1829 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path));
1830 if (!(P.empty() || llvm::sys::path::is_absolute(P))) {
1831 if (WorkingDir.empty())
1832 llvm::sys::fs::make_absolute(P);
1833 else
1834 llvm::sys::fs::make_absolute(WorkingDir, P);
1835 }
1836 llvm::sys::path::remove_dots(P);
1837 Opts.ModuleCachePath = std::string(P.str());
1838
1839 // Only the -fmodule-file=<name>=<file> form.
1840 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
1841 StringRef Val = A->getValue();
1842 if (Val.find('=') != StringRef::npos){
1843 auto Split = Val.split('=');
1844 Opts.PrebuiltModuleFiles.insert(
1845 {std::string(Split.first), std::string(Split.second)});
1846 }
1847 }
1848 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path))
1849 Opts.AddPrebuiltModulePath(A->getValue());
1850
1851 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) {
1852 StringRef MacroDef = A->getValue();
1853 Opts.ModulesIgnoreMacros.insert(
1854 llvm::CachedHashString(MacroDef.split('=').first));
1855 }
1856
1857 // Add -I..., -F..., and -index-header-map options in order.
1858 bool IsIndexHeaderMap = false;
1859 bool IsSysrootSpecified =
1860 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot);
1861 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
1862 if (A->getOption().matches(OPT_index_header_map)) {
1863 // -index-header-map applies to the next -I or -F.
1864 IsIndexHeaderMap = true;
1865 continue;
1866 }
1867
1868 frontend::IncludeDirGroup Group =
1869 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
1870
1871 bool IsFramework = A->getOption().matches(OPT_F);
1872 std::string Path = A->getValue();
1873
1874 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
1875 SmallString<32> Buffer;
1876 llvm::sys::path::append(Buffer, Opts.Sysroot,
1877 llvm::StringRef(A->getValue()).substr(1));
1878 Path = std::string(Buffer.str());
1879 }
1880
1881 Opts.AddPath(Path, Group, IsFramework,
1882 /*IgnoreSysroot*/ true);
1883 IsIndexHeaderMap = false;
1884 }
1885
1886 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1887 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1888 for (const auto *A :
1889 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
1890 if (A->getOption().matches(OPT_iprefix))
1891 Prefix = A->getValue();
1892 else if (A->getOption().matches(OPT_iwithprefix))
1893 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
1894 else
1895 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
1896 }
1897
1898 for (const auto *A : Args.filtered(OPT_idirafter))
1899 Opts.AddPath(A->getValue(), frontend::After, false, true);
1900 for (const auto *A : Args.filtered(OPT_iquote))
1901 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
1902 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
1903 Opts.AddPath(A->getValue(), frontend::System, false,
1904 !A->getOption().matches(OPT_iwithsysroot));
1905 for (const auto *A : Args.filtered(OPT_iframework))
1906 Opts.AddPath(A->getValue(), frontend::System, true, true);
1907 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot))
1908 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true,
1909 /*IgnoreSysRoot=*/false);
1910
1911 // Add the paths for the various language specific isystem flags.
1912 for (const auto *A : Args.filtered(OPT_c_isystem))
1913 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
1914 for (const auto *A : Args.filtered(OPT_cxx_isystem))
1915 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
1916 for (const auto *A : Args.filtered(OPT_objc_isystem))
1917 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
1918 for (const auto *A : Args.filtered(OPT_objcxx_isystem))
1919 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
1920
1921 // Add the internal paths from a driver that detects standard include paths.
1922 for (const auto *A :
1923 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
1924 frontend::IncludeDirGroup Group = frontend::System;
1925 if (A->getOption().matches(OPT_internal_externc_isystem))
1926 Group = frontend::ExternCSystem;
1927 Opts.AddPath(A->getValue(), Group, false, true);
1928 }
1929
1930 // Add the path prefixes which are implicitly treated as being system headers.
1931 for (const auto *A :
1932 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
1933 Opts.AddSystemHeaderPrefix(
1934 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
1935
1936 for (const auto *A : Args.filtered(OPT_ivfsoverlay))
1937 Opts.AddVFSOverlayFile(A->getValue());
1938 }
1939
setLangDefaults(LangOptions & Opts,InputKind IK,const llvm::Triple & T,std::vector<std::string> & Includes,LangStandard::Kind LangStd)1940 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1941 const llvm::Triple &T,
1942 std::vector<std::string> &Includes,
1943 LangStandard::Kind LangStd) {
1944 // Set some properties which depend solely on the input kind; it would be nice
1945 // to move these to the language standard, and have the driver resolve the
1946 // input kind + language standard.
1947 //
1948 // FIXME: Perhaps a better model would be for a single source file to have
1949 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std)
1950 // simultaneously active?
1951 if (IK.getLanguage() == Language::Asm) {
1952 Opts.AsmPreprocessor = 1;
1953 } else if (IK.isObjectiveC()) {
1954 Opts.ObjC = 1;
1955 }
1956
1957 if (LangStd == LangStandard::lang_unspecified) {
1958 // Based on the base language, pick one.
1959 switch (IK.getLanguage()) {
1960 case Language::Unknown:
1961 case Language::LLVM_IR:
1962 llvm_unreachable("Invalid input kind!");
1963 case Language::OpenCL:
1964 LangStd = LangStandard::lang_opencl10;
1965 break;
1966 case Language::CUDA:
1967 LangStd = LangStandard::lang_cuda;
1968 break;
1969 case Language::Asm:
1970 case Language::C:
1971 #if defined(CLANG_DEFAULT_STD_C)
1972 LangStd = CLANG_DEFAULT_STD_C;
1973 #else
1974 // The PS4 uses C99 as the default C standard.
1975 if (T.isPS4())
1976 LangStd = LangStandard::lang_gnu99;
1977 else
1978 LangStd = LangStandard::lang_gnu17;
1979 #endif
1980 break;
1981 case Language::ObjC:
1982 #if defined(CLANG_DEFAULT_STD_C)
1983 LangStd = CLANG_DEFAULT_STD_C;
1984 #else
1985 LangStd = LangStandard::lang_gnu11;
1986 #endif
1987 break;
1988 case Language::CXX:
1989 case Language::ObjCXX:
1990 #if defined(CLANG_DEFAULT_STD_CXX)
1991 LangStd = CLANG_DEFAULT_STD_CXX;
1992 #else
1993 LangStd = LangStandard::lang_gnucxx14;
1994 #endif
1995 break;
1996 case Language::RenderScript:
1997 LangStd = LangStandard::lang_c99;
1998 break;
1999 case Language::HIP:
2000 LangStd = LangStandard::lang_hip;
2001 break;
2002 }
2003 }
2004
2005 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
2006 Opts.LangStd = LangStd;
2007 Opts.LineComment = Std.hasLineComments();
2008 Opts.C99 = Std.isC99();
2009 Opts.C11 = Std.isC11();
2010 Opts.C17 = Std.isC17();
2011 Opts.C2x = Std.isC2x();
2012 Opts.CPlusPlus = Std.isCPlusPlus();
2013 Opts.CPlusPlus11 = Std.isCPlusPlus11();
2014 Opts.CPlusPlus14 = Std.isCPlusPlus14();
2015 Opts.CPlusPlus17 = Std.isCPlusPlus17();
2016 Opts.CPlusPlus20 = Std.isCPlusPlus20();
2017 Opts.CPlusPlus2b = Std.isCPlusPlus2b();
2018 Opts.GNUMode = Std.isGNUMode();
2019 Opts.GNUCVersion = 0;
2020 Opts.HexFloats = Std.hasHexFloats();
2021 Opts.ImplicitInt = Std.hasImplicitInt();
2022
2023 // Set OpenCL Version.
2024 Opts.OpenCL = Std.isOpenCL();
2025 if (LangStd == LangStandard::lang_opencl10)
2026 Opts.OpenCLVersion = 100;
2027 else if (LangStd == LangStandard::lang_opencl11)
2028 Opts.OpenCLVersion = 110;
2029 else if (LangStd == LangStandard::lang_opencl12)
2030 Opts.OpenCLVersion = 120;
2031 else if (LangStd == LangStandard::lang_opencl20)
2032 Opts.OpenCLVersion = 200;
2033 else if (LangStd == LangStandard::lang_opencl30)
2034 Opts.OpenCLVersion = 300;
2035 else if (LangStd == LangStandard::lang_openclcpp)
2036 Opts.OpenCLCPlusPlusVersion = 100;
2037
2038 // OpenCL has some additional defaults.
2039 if (Opts.OpenCL) {
2040 Opts.AltiVec = 0;
2041 Opts.ZVector = 0;
2042 Opts.setDefaultFPContractMode(LangOptions::FPM_On);
2043 Opts.OpenCLCPlusPlus = Opts.CPlusPlus;
2044
2045 // Include default header file for OpenCL.
2046 if (Opts.IncludeDefaultHeader) {
2047 if (Opts.DeclareOpenCLBuiltins) {
2048 // Only include base header file for builtin types and constants.
2049 Includes.push_back("opencl-c-base.h");
2050 } else {
2051 Includes.push_back("opencl-c.h");
2052 }
2053 }
2054 }
2055
2056 Opts.HIP = IK.getLanguage() == Language::HIP;
2057 Opts.CUDA = IK.getLanguage() == Language::CUDA || Opts.HIP;
2058 if (Opts.HIP) {
2059 // HIP toolchain does not support 'Fast' FPOpFusion in backends since it
2060 // fuses multiplication/addition instructions without contract flag from
2061 // device library functions in LLVM bitcode, which causes accuracy loss in
2062 // certain math functions, e.g. tan(-1e20) becomes -0.933 instead of 0.8446.
2063 // For device library functions in bitcode to work, 'Strict' or 'Standard'
2064 // FPOpFusion options in backends is needed. Therefore 'fast-honor-pragmas'
2065 // FP contract option is used to allow fuse across statements in frontend
2066 // whereas respecting contract flag in backend.
2067 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas);
2068 } else if (Opts.CUDA) {
2069 // Allow fuse across statements disregarding pragmas.
2070 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
2071 }
2072
2073 Opts.RenderScript = IK.getLanguage() == Language::RenderScript;
2074
2075 // OpenCL and C++ both have bool, true, false keywords.
2076 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
2077
2078 // OpenCL has half keyword
2079 Opts.Half = Opts.OpenCL;
2080
2081 // C++ has wchar_t keyword.
2082 Opts.WChar = Opts.CPlusPlus;
2083
2084 Opts.CXXOperatorNames = Opts.CPlusPlus;
2085
2086 Opts.AlignedAllocation = Opts.CPlusPlus17;
2087
2088 Opts.DollarIdents = !Opts.AsmPreprocessor;
2089
2090 // Enable [[]] attributes in C++11 and C2x by default.
2091 Opts.DoubleSquareBracketAttributes = Opts.CPlusPlus11 || Opts.C2x;
2092 }
2093
2094 /// Check if input file kind and language standard are compatible.
IsInputCompatibleWithStandard(InputKind IK,const LangStandard & S)2095 static bool IsInputCompatibleWithStandard(InputKind IK,
2096 const LangStandard &S) {
2097 switch (IK.getLanguage()) {
2098 case Language::Unknown:
2099 case Language::LLVM_IR:
2100 llvm_unreachable("should not parse language flags for this input");
2101
2102 case Language::C:
2103 case Language::ObjC:
2104 case Language::RenderScript:
2105 return S.getLanguage() == Language::C;
2106
2107 case Language::OpenCL:
2108 return S.getLanguage() == Language::OpenCL;
2109
2110 case Language::CXX:
2111 case Language::ObjCXX:
2112 return S.getLanguage() == Language::CXX;
2113
2114 case Language::CUDA:
2115 // FIXME: What -std= values should be permitted for CUDA compilations?
2116 return S.getLanguage() == Language::CUDA ||
2117 S.getLanguage() == Language::CXX;
2118
2119 case Language::HIP:
2120 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP;
2121
2122 case Language::Asm:
2123 // Accept (and ignore) all -std= values.
2124 // FIXME: The -std= value is not ignored; it affects the tokenization
2125 // and preprocessing rules if we're preprocessing this asm input.
2126 return true;
2127 }
2128
2129 llvm_unreachable("unexpected input language");
2130 }
2131
2132 /// Get language name for given input kind.
GetInputKindName(InputKind IK)2133 static const StringRef GetInputKindName(InputKind IK) {
2134 switch (IK.getLanguage()) {
2135 case Language::C:
2136 return "C";
2137 case Language::ObjC:
2138 return "Objective-C";
2139 case Language::CXX:
2140 return "C++";
2141 case Language::ObjCXX:
2142 return "Objective-C++";
2143 case Language::OpenCL:
2144 return "OpenCL";
2145 case Language::CUDA:
2146 return "CUDA";
2147 case Language::RenderScript:
2148 return "RenderScript";
2149 case Language::HIP:
2150 return "HIP";
2151
2152 case Language::Asm:
2153 return "Asm";
2154 case Language::LLVM_IR:
2155 return "LLVM IR";
2156
2157 case Language::Unknown:
2158 break;
2159 }
2160 llvm_unreachable("unknown input language");
2161 }
2162
GenerateLangArgs(const LangOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA)2163 static void GenerateLangArgs(const LangOptions &Opts,
2164 SmallVectorImpl<const char *> &Args,
2165 CompilerInvocation::StringAllocator SA) {
2166 if (Opts.IncludeDefaultHeader)
2167 Args.push_back(SA(GetOptName(OPT_finclude_default_header)));
2168 if (Opts.DeclareOpenCLBuiltins)
2169 Args.push_back(SA(GetOptName(OPT_fdeclare_opencl_builtins)));
2170 }
2171
ParseLangArgs(LangOptions & Opts,ArgList & Args,InputKind IK,const llvm::Triple & T,std::vector<std::string> & Includes,DiagnosticsEngine & Diags)2172 void CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args,
2173 InputKind IK, const llvm::Triple &T,
2174 std::vector<std::string> &Includes,
2175 DiagnosticsEngine &Diags) {
2176 // FIXME: Cleanup per-file based stuff.
2177 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
2178 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
2179 LangStd = LangStandard::getLangKind(A->getValue());
2180 if (LangStd == LangStandard::lang_unspecified) {
2181 Diags.Report(diag::err_drv_invalid_value)
2182 << A->getAsString(Args) << A->getValue();
2183 // Report supported standards with short description.
2184 for (unsigned KindValue = 0;
2185 KindValue != LangStandard::lang_unspecified;
2186 ++KindValue) {
2187 const LangStandard &Std = LangStandard::getLangStandardForKind(
2188 static_cast<LangStandard::Kind>(KindValue));
2189 if (IsInputCompatibleWithStandard(IK, Std)) {
2190 auto Diag = Diags.Report(diag::note_drv_use_standard);
2191 Diag << Std.getName() << Std.getDescription();
2192 unsigned NumAliases = 0;
2193 #define LANGSTANDARD(id, name, lang, desc, features)
2194 #define LANGSTANDARD_ALIAS(id, alias) \
2195 if (KindValue == LangStandard::lang_##id) ++NumAliases;
2196 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
2197 #include "clang/Basic/LangStandards.def"
2198 Diag << NumAliases;
2199 #define LANGSTANDARD(id, name, lang, desc, features)
2200 #define LANGSTANDARD_ALIAS(id, alias) \
2201 if (KindValue == LangStandard::lang_##id) Diag << alias;
2202 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
2203 #include "clang/Basic/LangStandards.def"
2204 }
2205 }
2206 } else {
2207 // Valid standard, check to make sure language and standard are
2208 // compatible.
2209 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
2210 if (!IsInputCompatibleWithStandard(IK, Std)) {
2211 Diags.Report(diag::err_drv_argument_not_allowed_with)
2212 << A->getAsString(Args) << GetInputKindName(IK);
2213 }
2214 }
2215 }
2216
2217 // -cl-std only applies for OpenCL language standards.
2218 // Override the -std option in this case.
2219 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
2220 LangStandard::Kind OpenCLLangStd
2221 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
2222 .Cases("cl", "CL", LangStandard::lang_opencl10)
2223 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10)
2224 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
2225 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
2226 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
2227 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30)
2228 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp)
2229 .Default(LangStandard::lang_unspecified);
2230
2231 if (OpenCLLangStd == LangStandard::lang_unspecified) {
2232 Diags.Report(diag::err_drv_invalid_value)
2233 << A->getAsString(Args) << A->getValue();
2234 }
2235 else
2236 LangStd = OpenCLLangStd;
2237 }
2238
2239 // These need to be parsed now. They are used to set OpenCL defaults.
2240 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
2241 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins);
2242
2243 CompilerInvocation::setLangDefaults(Opts, IK, T, Includes, LangStd);
2244
2245 // The key paths of codegen options defined in Options.td start with
2246 // "LangOpts->". Let's provide the expected variable name and type.
2247 LangOptions *LangOpts = &Opts;
2248 bool Success = true;
2249
2250 #define LANG_OPTION_WITH_MARSHALLING( \
2251 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2252 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2253 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2254 MERGER, EXTRACTOR, TABLE_INDEX) \
2255 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, Success, ID, FLAGS, PARAM, \
2256 SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
2257 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, \
2258 MERGER, TABLE_INDEX)
2259 #include "clang/Driver/Options.inc"
2260 #undef LANG_OPTION_WITH_MARSHALLING
2261
2262 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
2263 StringRef Name = A->getValue();
2264 if (Name == "full" || Name == "branch") {
2265 Opts.CFProtectionBranch = 1;
2266 }
2267 }
2268
2269 if (Args.hasArg(OPT_fno_operator_names))
2270 Opts.CXXOperatorNames = 0;
2271
2272 if (Opts.ObjC) {
2273 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
2274 StringRef value = arg->getValue();
2275 if (Opts.ObjCRuntime.tryParse(value))
2276 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
2277 }
2278
2279 if (Args.hasArg(OPT_fobjc_gc_only))
2280 Opts.setGC(LangOptions::GCOnly);
2281 else if (Args.hasArg(OPT_fobjc_gc))
2282 Opts.setGC(LangOptions::HybridGC);
2283 else if (Args.hasArg(OPT_fobjc_arc)) {
2284 Opts.ObjCAutoRefCount = 1;
2285 if (!Opts.ObjCRuntime.allowsARC())
2286 Diags.Report(diag::err_arc_unsupported_on_runtime);
2287 }
2288
2289 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
2290 // whether the feature is actually enabled. This is predominantly
2291 // determined by -fobjc-runtime, but we allow it to be overridden
2292 // from the command line for testing purposes.
2293 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
2294 Opts.ObjCWeakRuntime = 1;
2295 else
2296 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
2297
2298 // ObjCWeak determines whether __weak is actually enabled.
2299 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
2300 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
2301 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
2302 assert(!Opts.ObjCWeak);
2303 } else if (Opts.getGC() != LangOptions::NonGC) {
2304 Diags.Report(diag::err_objc_weak_with_gc);
2305 } else if (!Opts.ObjCWeakRuntime) {
2306 Diags.Report(diag::err_objc_weak_unsupported);
2307 } else {
2308 Opts.ObjCWeak = 1;
2309 }
2310 } else if (Opts.ObjCAutoRefCount) {
2311 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
2312 }
2313
2314 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
2315 Opts.ObjCSubscriptingLegacyRuntime =
2316 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
2317 }
2318
2319 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {
2320 // Check that the version has 1 to 3 components and the minor and patch
2321 // versions fit in two decimal digits.
2322 VersionTuple GNUCVer;
2323 bool Invalid = GNUCVer.tryParse(A->getValue());
2324 unsigned Major = GNUCVer.getMajor();
2325 unsigned Minor = GNUCVer.getMinor().getValueOr(0);
2326 unsigned Patch = GNUCVer.getSubminor().getValueOr(0);
2327 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
2328 Diags.Report(diag::err_drv_invalid_value)
2329 << A->getAsString(Args) << A->getValue();
2330 }
2331 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch;
2332 }
2333
2334 if (Args.hasArg(OPT_ftrapv)) {
2335 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
2336 // Set the handler, if one is specified.
2337 Opts.OverflowHandler =
2338 std::string(Args.getLastArgValue(OPT_ftrapv_handler));
2339 }
2340 else if (Args.hasArg(OPT_fwrapv))
2341 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
2342
2343 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
2344 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
2345 Opts.MSCompatibilityVersion = 0;
2346 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
2347 VersionTuple VT;
2348 if (VT.tryParse(A->getValue()))
2349 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2350 << A->getValue();
2351 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
2352 VT.getMinor().getValueOr(0) * 100000 +
2353 VT.getSubminor().getValueOr(0);
2354 }
2355
2356 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs
2357 // is specified, or -std is set to a conforming mode.
2358 // Trigraphs are disabled by default in c++1z onwards.
2359 // For z/OS, trigraphs are enabled by default (without regard to the above).
2360 Opts.Trigraphs =
2361 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS();
2362 Opts.Trigraphs =
2363 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
2364
2365 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
2366 OPT_fno_dollars_in_identifiers,
2367 Opts.DollarIdents);
2368
2369 // -ffixed-point
2370 Opts.FixedPoint =
2371 Args.hasFlag(OPT_ffixed_point, OPT_fno_fixed_point, /*Default=*/false) &&
2372 !Opts.CPlusPlus;
2373 Opts.PaddingOnUnsignedFixedPoint =
2374 Args.hasFlag(OPT_fpadding_on_unsigned_fixed_point,
2375 OPT_fno_padding_on_unsigned_fixed_point,
2376 /*Default=*/false) &&
2377 Opts.FixedPoint;
2378
2379 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti);
2380 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
2381 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL
2382 && Opts.OpenCLVersion == 200);
2383 Opts.Coroutines = Opts.CPlusPlus20 || Args.hasArg(OPT_fcoroutines_ts);
2384
2385 Opts.ConvergentFunctions = Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) ||
2386 Opts.SYCLIsDevice ||
2387 Args.hasArg(OPT_fconvergent_functions);
2388
2389 Opts.DoubleSquareBracketAttributes =
2390 Args.hasFlag(OPT_fdouble_square_bracket_attributes,
2391 OPT_fno_double_square_bracket_attributes,
2392 Opts.DoubleSquareBracketAttributes);
2393
2394 Opts.CPlusPlusModules = Opts.CPlusPlus20;
2395 Opts.Modules =
2396 Args.hasArg(OPT_fmodules) || Opts.ModulesTS || Opts.CPlusPlusModules;
2397 Opts.ModulesDeclUse =
2398 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
2399 // FIXME: We only need this in C++ modules / Modules TS if we might textually
2400 // enter a different module (eg, when building a header unit).
2401 Opts.ModulesLocalVisibility =
2402 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS ||
2403 Opts.CPlusPlusModules;
2404 Opts.ModulesSearchAll = Opts.Modules &&
2405 !Args.hasArg(OPT_fno_modules_search_all) &&
2406 Args.hasArg(OPT_fmodules_search_all);
2407 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
2408 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
2409 Opts.Char8 = Args.hasFlag(OPT_fchar8__t, OPT_fno_char8__t, Opts.CPlusPlus20);
2410 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
2411 if (!Opts.NoBuiltin)
2412 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
2413 Opts.AlignedAllocation =
2414 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation,
2415 Opts.AlignedAllocation);
2416 Opts.AlignedAllocationUnavailable =
2417 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable);
2418 if (Args.hasArg(OPT_fconcepts_ts))
2419 Diags.Report(diag::warn_fe_concepts_ts_flag);
2420 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
2421 Opts.LongDoubleSize = Args.hasArg(OPT_mlong_double_128)
2422 ? 128
2423 : Args.hasArg(OPT_mlong_double_64) ? 64 : 0;
2424 Opts.EnableAIXExtendedAltivecABI = Args.hasArg(OPT_mabi_EQ_vec_extabi);
2425 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2426 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2427 || Args.hasArg(OPT_fdump_record_layouts);
2428 if (Opts.FastRelaxedMath)
2429 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
2430 Opts.XLPragmaPack = Args.hasArg(OPT_fxl_pragma_pack);
2431 llvm::sort(Opts.ModuleFeatures);
2432
2433 Opts.ArmSveVectorBits =
2434 getLastArgIntValue(Args, options::OPT_msve_vector_bits_EQ, 0, Diags);
2435
2436 // __declspec is enabled by default for the PS4 by the driver, and also
2437 // enabled for Microsoft Extensions or Borland Extensions, here.
2438 //
2439 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
2440 // CUDA extension. However, it is required for supporting
2441 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
2442 // been rewritten in terms of something more generic, remove the Opts.CUDA
2443 // term here.
2444 Opts.DeclSpecKeyword =
2445 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
2446 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
2447
2448 // -mrtd option
2449 if (Arg *A = Args.getLastArg(OPT_mrtd)) {
2450 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
2451 Diags.Report(diag::err_drv_argument_not_allowed_with)
2452 << A->getSpelling() << "-fdefault-calling-conv";
2453 else {
2454 if (T.getArch() != llvm::Triple::x86)
2455 Diags.Report(diag::err_drv_argument_not_allowed_with)
2456 << A->getSpelling() << T.getTriple();
2457 else
2458 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
2459 }
2460 }
2461
2462 // Check if -fopenmp-simd is specified.
2463 bool IsSimdSpecified =
2464 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd,
2465 /*Default=*/false);
2466 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified;
2467 Opts.OpenMPUseTLS =
2468 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
2469 Opts.OpenMPIsDevice =
2470 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
2471 Opts.OpenMPIRBuilder =
2472 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder);
2473 bool IsTargetSpecified =
2474 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ);
2475
2476 Opts.ConvergentFunctions = Opts.ConvergentFunctions || Opts.OpenMPIsDevice;
2477
2478 if (Opts.OpenMP || Opts.OpenMPSimd) {
2479 if (int Version = getLastArgIntValue(
2480 Args, OPT_fopenmp_version_EQ,
2481 (IsSimdSpecified || IsTargetSpecified) ? 50 : Opts.OpenMP, Diags))
2482 Opts.OpenMP = Version;
2483 // Provide diagnostic when a given target is not expected to be an OpenMP
2484 // device or host.
2485 if (!Opts.OpenMPIsDevice) {
2486 switch (T.getArch()) {
2487 default:
2488 break;
2489 // Add unsupported host targets here:
2490 case llvm::Triple::nvptx:
2491 case llvm::Triple::nvptx64:
2492 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str();
2493 break;
2494 }
2495 }
2496 }
2497
2498 // Set the flag to prevent the implementation from emitting device exception
2499 // handling code for those requiring so.
2500 if ((Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN())) ||
2501 Opts.OpenCLCPlusPlus) {
2502 Opts.Exceptions = 0;
2503 Opts.CXXExceptions = 0;
2504 }
2505 if (Opts.OpenMPIsDevice && T.isNVPTX()) {
2506 Opts.OpenMPCUDANumSMs =
2507 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ,
2508 Opts.OpenMPCUDANumSMs, Diags);
2509 Opts.OpenMPCUDABlocksPerSM =
2510 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ,
2511 Opts.OpenMPCUDABlocksPerSM, Diags);
2512 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue(
2513 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ,
2514 Opts.OpenMPCUDAReductionBufNum, Diags);
2515 }
2516
2517 // Get the OpenMP target triples if any.
2518 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) {
2519 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit };
2520 auto getArchPtrSize = [](const llvm::Triple &T) {
2521 if (T.isArch16Bit())
2522 return Arch16Bit;
2523 if (T.isArch32Bit())
2524 return Arch32Bit;
2525 assert(T.isArch64Bit() && "Expected 64-bit architecture");
2526 return Arch64Bit;
2527 };
2528
2529 for (unsigned i = 0; i < A->getNumValues(); ++i) {
2530 llvm::Triple TT(A->getValue(i));
2531
2532 if (TT.getArch() == llvm::Triple::UnknownArch ||
2533 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() ||
2534 TT.getArch() == llvm::Triple::nvptx ||
2535 TT.getArch() == llvm::Triple::nvptx64 ||
2536 TT.getArch() == llvm::Triple::amdgcn ||
2537 TT.getArch() == llvm::Triple::x86 ||
2538 TT.getArch() == llvm::Triple::x86_64))
2539 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i);
2540 else if (getArchPtrSize(T) != getArchPtrSize(TT))
2541 Diags.Report(diag::err_drv_incompatible_omp_arch)
2542 << A->getValue(i) << T.str();
2543 else
2544 Opts.OMPTargetTriples.push_back(TT);
2545 }
2546 }
2547
2548 // Get OpenMP host file path if any and report if a non existent file is
2549 // found
2550 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
2551 Opts.OMPHostIRFile = A->getValue();
2552 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
2553 Diags.Report(diag::err_drv_omp_host_ir_file_not_found)
2554 << Opts.OMPHostIRFile;
2555 }
2556
2557 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options
2558 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) &&
2559 Args.hasArg(options::OPT_fopenmp_cuda_mode);
2560
2561 // Set CUDA support for parallel execution of target regions for OpenMP target
2562 // NVPTX/AMDGCN if specified in options.
2563 Opts.OpenMPCUDATargetParallel =
2564 Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) &&
2565 Args.hasArg(options::OPT_fopenmp_cuda_parallel_target_regions);
2566
2567 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options
2568 Opts.OpenMPCUDAForceFullRuntime =
2569 Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) &&
2570 Args.hasArg(options::OPT_fopenmp_cuda_force_full_runtime);
2571
2572 // Record whether the __DEPRECATED define was requested.
2573 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2574 OPT_fno_deprecated_macro,
2575 Opts.Deprecated);
2576
2577 // FIXME: Eliminate this dependency.
2578 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
2579 OptSize = getOptimizationLevelSize(Args);
2580 Opts.Optimize = Opt != 0;
2581 Opts.OptimizeSize = OptSize != 0;
2582
2583 // This is the __NO_INLINE__ define, which just depends on things like the
2584 // optimization level and -fno-inline, not actually whether the backend has
2585 // inlining enabled.
2586 Opts.NoInlineDefine = !Opts.Optimize;
2587 if (Arg *InlineArg = Args.getLastArg(
2588 options::OPT_finline_functions, options::OPT_finline_hint_functions,
2589 options::OPT_fno_inline_functions, options::OPT_fno_inline))
2590 if (InlineArg->getOption().matches(options::OPT_fno_inline))
2591 Opts.NoInlineDefine = true;
2592
2593 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
2594 StringRef Val = A->getValue();
2595 if (Val == "fast")
2596 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
2597 else if (Val == "on")
2598 Opts.setDefaultFPContractMode(LangOptions::FPM_On);
2599 else if (Val == "off")
2600 Opts.setDefaultFPContractMode(LangOptions::FPM_Off);
2601 else if (Val == "fast-honor-pragmas")
2602 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas);
2603 else
2604 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2605 }
2606
2607 LangOptions::FPExceptionModeKind FPEB = LangOptions::FPE_Ignore;
2608 if (Arg *A = Args.getLastArg(OPT_ffp_exception_behavior_EQ)) {
2609 StringRef Val = A->getValue();
2610 if (Val.equals("ignore"))
2611 FPEB = LangOptions::FPE_Ignore;
2612 else if (Val.equals("maytrap"))
2613 FPEB = LangOptions::FPE_MayTrap;
2614 else if (Val.equals("strict"))
2615 FPEB = LangOptions::FPE_Strict;
2616 else
2617 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2618 }
2619 Opts.setFPExceptionMode(FPEB);
2620
2621 // Parse -fsanitize= arguments.
2622 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2623 Diags, Opts.Sanitize);
2624 std::vector<std::string> systemBlacklists =
2625 Args.getAllArgValues(OPT_fsanitize_system_blacklist);
2626 Opts.SanitizerBlacklistFiles.insert(Opts.SanitizerBlacklistFiles.end(),
2627 systemBlacklists.begin(),
2628 systemBlacklists.end());
2629
2630 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) {
2631 Opts.setClangABICompat(LangOptions::ClangABI::Latest);
2632
2633 StringRef Ver = A->getValue();
2634 std::pair<StringRef, StringRef> VerParts = Ver.split('.');
2635 unsigned Major, Minor = 0;
2636
2637 // Check the version number is valid: either 3.x (0 <= x <= 9) or
2638 // y or y.0 (4 <= y <= current version).
2639 if (!VerParts.first.startswith("0") &&
2640 !VerParts.first.getAsInteger(10, Major) &&
2641 3 <= Major && Major <= CLANG_VERSION_MAJOR &&
2642 (Major == 3 ? VerParts.second.size() == 1 &&
2643 !VerParts.second.getAsInteger(10, Minor)
2644 : VerParts.first.size() == Ver.size() ||
2645 VerParts.second == "0")) {
2646 // Got a valid version number.
2647 if (Major == 3 && Minor <= 8)
2648 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8);
2649 else if (Major <= 4)
2650 Opts.setClangABICompat(LangOptions::ClangABI::Ver4);
2651 else if (Major <= 6)
2652 Opts.setClangABICompat(LangOptions::ClangABI::Ver6);
2653 else if (Major <= 7)
2654 Opts.setClangABICompat(LangOptions::ClangABI::Ver7);
2655 else if (Major <= 9)
2656 Opts.setClangABICompat(LangOptions::ClangABI::Ver9);
2657 else if (Major <= 11)
2658 Opts.setClangABICompat(LangOptions::ClangABI::Ver11);
2659 } else if (Ver != "latest") {
2660 Diags.Report(diag::err_drv_invalid_value)
2661 << A->getAsString(Args) << A->getValue();
2662 }
2663 }
2664
2665 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) {
2666 StringRef SignScope = A->getValue();
2667
2668 if (SignScope.equals_lower("none"))
2669 Opts.setSignReturnAddressScope(
2670 LangOptions::SignReturnAddressScopeKind::None);
2671 else if (SignScope.equals_lower("all"))
2672 Opts.setSignReturnAddressScope(
2673 LangOptions::SignReturnAddressScopeKind::All);
2674 else if (SignScope.equals_lower("non-leaf"))
2675 Opts.setSignReturnAddressScope(
2676 LangOptions::SignReturnAddressScopeKind::NonLeaf);
2677 else
2678 Diags.Report(diag::err_drv_invalid_value)
2679 << A->getAsString(Args) << SignScope;
2680
2681 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) {
2682 StringRef SignKey = A->getValue();
2683 if (!SignScope.empty() && !SignKey.empty()) {
2684 if (SignKey.equals_lower("a_key"))
2685 Opts.setSignReturnAddressKey(
2686 LangOptions::SignReturnAddressKeyKind::AKey);
2687 else if (SignKey.equals_lower("b_key"))
2688 Opts.setSignReturnAddressKey(
2689 LangOptions::SignReturnAddressKeyKind::BKey);
2690 else
2691 Diags.Report(diag::err_drv_invalid_value)
2692 << A->getAsString(Args) << SignKey;
2693 }
2694 }
2695 }
2696
2697 std::string ThreadModel =
2698 std::string(Args.getLastArgValue(OPT_mthread_model, "posix"));
2699 if (ThreadModel != "posix" && ThreadModel != "single")
2700 Diags.Report(diag::err_drv_invalid_value)
2701 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) << ThreadModel;
2702 Opts.setThreadModel(
2703 llvm::StringSwitch<LangOptions::ThreadModelKind>(ThreadModel)
2704 .Case("posix", LangOptions::ThreadModelKind::POSIX)
2705 .Case("single", LangOptions::ThreadModelKind::Single));
2706 }
2707
isStrictlyPreprocessorAction(frontend::ActionKind Action)2708 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
2709 switch (Action) {
2710 case frontend::ASTDeclList:
2711 case frontend::ASTDump:
2712 case frontend::ASTPrint:
2713 case frontend::ASTView:
2714 case frontend::EmitAssembly:
2715 case frontend::EmitBC:
2716 case frontend::EmitHTML:
2717 case frontend::EmitLLVM:
2718 case frontend::EmitLLVMOnly:
2719 case frontend::EmitCodeGenOnly:
2720 case frontend::EmitObj:
2721 case frontend::FixIt:
2722 case frontend::GenerateModule:
2723 case frontend::GenerateModuleInterface:
2724 case frontend::GenerateHeaderModule:
2725 case frontend::GeneratePCH:
2726 case frontend::GenerateInterfaceStubs:
2727 case frontend::ParseSyntaxOnly:
2728 case frontend::ModuleFileInfo:
2729 case frontend::VerifyPCH:
2730 case frontend::PluginAction:
2731 case frontend::RewriteObjC:
2732 case frontend::RewriteTest:
2733 case frontend::RunAnalysis:
2734 case frontend::TemplightDump:
2735 case frontend::MigrateSource:
2736 return false;
2737
2738 case frontend::DumpCompilerOptions:
2739 case frontend::DumpRawTokens:
2740 case frontend::DumpTokens:
2741 case frontend::InitOnly:
2742 case frontend::PrintPreamble:
2743 case frontend::PrintPreprocessedInput:
2744 case frontend::RewriteMacros:
2745 case frontend::RunPreprocessorOnly:
2746 case frontend::PrintDependencyDirectivesSourceMinimizerOutput:
2747 return true;
2748 }
2749 llvm_unreachable("invalid frontend action");
2750 }
2751
ParsePreprocessorArgs(PreprocessorOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags,frontend::ActionKind Action)2752 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2753 DiagnosticsEngine &Diags,
2754 frontend::ActionKind Action) {
2755 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) ||
2756 Args.hasArg(OPT_pch_through_hdrstop_use);
2757
2758 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
2759 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
2760
2761 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) {
2762 auto Split = StringRef(A).split('=');
2763 Opts.MacroPrefixMap.insert(
2764 {std::string(Split.first), std::string(Split.second)});
2765 }
2766
2767 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2768 StringRef Value(A->getValue());
2769 size_t Comma = Value.find(',');
2770 unsigned Bytes = 0;
2771 unsigned EndOfLine = 0;
2772
2773 if (Comma == StringRef::npos ||
2774 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2775 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2776 Diags.Report(diag::err_drv_preamble_format);
2777 else {
2778 Opts.PrecompiledPreambleBytes.first = Bytes;
2779 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2780 }
2781 }
2782
2783 // Add the __CET__ macro if a CFProtection option is set.
2784 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
2785 StringRef Name = A->getValue();
2786 if (Name == "branch")
2787 Opts.addMacroDef("__CET__=1");
2788 else if (Name == "return")
2789 Opts.addMacroDef("__CET__=2");
2790 else if (Name == "full")
2791 Opts.addMacroDef("__CET__=3");
2792 }
2793
2794 // Add macros from the command line.
2795 for (const auto *A : Args.filtered(OPT_D, OPT_U)) {
2796 if (A->getOption().matches(OPT_D))
2797 Opts.addMacroDef(A->getValue());
2798 else
2799 Opts.addMacroUndef(A->getValue());
2800 }
2801
2802 // Add the ordered list of -includes.
2803 for (const auto *A : Args.filtered(OPT_include))
2804 Opts.Includes.emplace_back(A->getValue());
2805
2806 for (const auto *A : Args.filtered(OPT_chain_include))
2807 Opts.ChainedIncludes.emplace_back(A->getValue());
2808
2809 for (const auto *A : Args.filtered(OPT_remap_file)) {
2810 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
2811
2812 if (Split.second.empty()) {
2813 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2814 continue;
2815 }
2816
2817 Opts.addRemappedFile(Split.first, Split.second);
2818 }
2819
2820 // Always avoid lexing editor placeholders when we're just running the
2821 // preprocessor as we never want to emit the
2822 // "editor placeholder in source file" error in PP only mode.
2823 if (isStrictlyPreprocessorAction(Action))
2824 Opts.LexEditorPlaceholders = false;
2825 }
2826
ParsePreprocessorOutputArgs(PreprocessorOutputOptions & Opts,ArgList & Args,frontend::ActionKind Action)2827 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2828 ArgList &Args,
2829 frontend::ActionKind Action) {
2830 if (isStrictlyPreprocessorAction(Action))
2831 Opts.ShowCPP = !Args.hasArg(OPT_dM);
2832 else
2833 Opts.ShowCPP = 0;
2834
2835 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2836 }
2837
ParseTargetArgs(TargetOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)2838 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
2839 DiagnosticsEngine &Diags) {
2840 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) {
2841 llvm::VersionTuple Version;
2842 if (Version.tryParse(A->getValue()))
2843 Diags.Report(diag::err_drv_invalid_value)
2844 << A->getAsString(Args) << A->getValue();
2845 else
2846 Opts.SDKVersion = Version;
2847 }
2848 }
2849
CreateFromArgs(CompilerInvocation & Res,ArrayRef<const char * > CommandLineArgs,DiagnosticsEngine & Diags,const char * Argv0)2850 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2851 ArrayRef<const char *> CommandLineArgs,
2852 DiagnosticsEngine &Diags,
2853 const char *Argv0) {
2854 bool Success = true;
2855
2856 // Parse the arguments.
2857 const OptTable &Opts = getDriverOptTable();
2858 const unsigned IncludedFlagsBitmask = options::CC1Option;
2859 unsigned MissingArgIndex, MissingArgCount;
2860 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex,
2861 MissingArgCount, IncludedFlagsBitmask);
2862 LangOptions &LangOpts = *Res.getLangOpts();
2863
2864 // Check for missing argument error.
2865 if (MissingArgCount) {
2866 Diags.Report(diag::err_drv_missing_argument)
2867 << Args.getArgString(MissingArgIndex) << MissingArgCount;
2868 Success = false;
2869 }
2870
2871 // Issue errors on unknown arguments.
2872 for (const auto *A : Args.filtered(OPT_UNKNOWN)) {
2873 auto ArgString = A->getAsString(Args);
2874 std::string Nearest;
2875 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1)
2876 Diags.Report(diag::err_drv_unknown_argument) << ArgString;
2877 else
2878 Diags.Report(diag::err_drv_unknown_argument_with_suggestion)
2879 << ArgString << Nearest;
2880 Success = false;
2881 }
2882
2883 Success &= Res.parseSimpleArgs(Args, Diags);
2884
2885 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
2886 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args);
2887 if (!Res.getDependencyOutputOpts().OutputFile.empty() &&
2888 Res.getDependencyOutputOpts().Targets.empty()) {
2889 Diags.Report(diag::err_fe_dependency_file_requires_MT);
2890 Success = false;
2891 }
2892 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags,
2893 /*DefaultDiagColor=*/false);
2894 // FIXME: We shouldn't have to pass the DashX option around here
2895 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags,
2896 LangOpts.IsHeaderFile);
2897 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
2898 llvm::Triple T(Res.getTargetOpts().Triple);
2899 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args,
2900 Res.getFileSystemOpts().WorkingDir);
2901 if (DashX.getFormat() == InputKind::Precompiled ||
2902 DashX.getLanguage() == Language::LLVM_IR) {
2903 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
2904 // PassManager in BackendUtil.cpp. They need to be initializd no matter
2905 // what the input type is.
2906 if (Args.hasArg(OPT_fobjc_arc))
2907 LangOpts.ObjCAutoRefCount = 1;
2908 // PIClevel and PIELevel are needed during code generation and this should be
2909 // set regardless of the input type.
2910 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2911 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie);
2912 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2913 Diags, LangOpts.Sanitize);
2914 } else {
2915 // Other LangOpts are only initialized when the input is not AST or LLVM IR.
2916 // FIXME: Should we really be calling this for an Language::Asm input?
2917 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes,
2918 Diags);
2919 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2920 LangOpts.ObjCExceptions = 1;
2921 if (T.isOSDarwin() && DashX.isPreprocessed()) {
2922 // Supress the darwin-specific 'stdlibcxx-not-found' diagnostic for
2923 // preprocessed input as we don't expect it to be used with -std=libc++
2924 // anyway.
2925 Res.getDiagnosticOpts().Warnings.push_back("no-stdlibcxx-not-found");
2926 }
2927 }
2928
2929 if (LangOpts.CUDA) {
2930 // During CUDA device-side compilation, the aux triple is the
2931 // triple used for host compilation.
2932 if (LangOpts.CUDAIsDevice)
2933 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2934 }
2935
2936 // Set the triple of the host for OpenMP device compile.
2937 if (LangOpts.OpenMPIsDevice)
2938 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2939
2940 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T,
2941 Res.getFrontendOpts().OutputFile, LangOpts);
2942
2943 // FIXME: Override value name discarding when asan or msan is used because the
2944 // backend passes depend on the name of the alloca in order to print out
2945 // names.
2946 Res.getCodeGenOpts().DiscardValueNames &=
2947 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
2948 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) &&
2949 !LangOpts.Sanitize.has(SanitizerKind::Memory) &&
2950 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory);
2951
2952 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags,
2953 Res.getFrontendOpts().ProgramAction);
2954 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args,
2955 Res.getFrontendOpts().ProgramAction);
2956
2957 // Turn on -Wspir-compat for SPIR target.
2958 if (T.isSPIR())
2959 Res.getDiagnosticOpts().Warnings.push_back("spir-compat");
2960
2961 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses.
2962 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses &&
2963 !Res.getLangOpts()->Sanitize.empty()) {
2964 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false;
2965 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored);
2966 }
2967
2968 // Store the command-line for using in the CodeView backend.
2969 Res.getCodeGenOpts().Argv0 = Argv0;
2970 Res.getCodeGenOpts().CommandLineArgs = CommandLineArgs;
2971
2972 FixupInvocation(Res, Diags, Args, DashX);
2973
2974 return Success;
2975 }
2976
getModuleHash() const2977 std::string CompilerInvocation::getModuleHash() const {
2978 // Note: For QoI reasons, the things we use as a hash here should all be
2979 // dumped via the -module-info flag.
2980 using llvm::hash_code;
2981 using llvm::hash_value;
2982 using llvm::hash_combine;
2983 using llvm::hash_combine_range;
2984
2985 // Start the signature with the compiler version.
2986 // FIXME: We'd rather use something more cryptographically sound than
2987 // CityHash, but this will do for now.
2988 hash_code code = hash_value(getClangFullRepositoryVersion());
2989
2990 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off
2991 // and getClangFullRepositoryVersion() doesn't include git revision.
2992 code = hash_combine(code, serialization::VERSION_MAJOR,
2993 serialization::VERSION_MINOR);
2994
2995 // Extend the signature with the language options
2996 #define LANGOPT(Name, Bits, Default, Description) \
2997 code = hash_combine(code, LangOpts->Name);
2998 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2999 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
3000 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
3001 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
3002 #include "clang/Basic/LangOptions.def"
3003
3004 for (StringRef Feature : LangOpts->ModuleFeatures)
3005 code = hash_combine(code, Feature);
3006
3007 code = hash_combine(code, LangOpts->ObjCRuntime);
3008 const auto &BCN = LangOpts->CommentOpts.BlockCommandNames;
3009 code = hash_combine(code, hash_combine_range(BCN.begin(), BCN.end()));
3010
3011 // Extend the signature with the target options.
3012 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
3013 TargetOpts->TuneCPU, TargetOpts->ABI);
3014 for (const auto &FeatureAsWritten : TargetOpts->FeaturesAsWritten)
3015 code = hash_combine(code, FeatureAsWritten);
3016
3017 // Extend the signature with preprocessor options.
3018 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
3019 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
3020 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
3021
3022 for (const auto &I : getPreprocessorOpts().Macros) {
3023 // If we're supposed to ignore this macro for the purposes of modules,
3024 // don't put it into the hash.
3025 if (!hsOpts.ModulesIgnoreMacros.empty()) {
3026 // Check whether we're ignoring this macro.
3027 StringRef MacroDef = I.first;
3028 if (hsOpts.ModulesIgnoreMacros.count(
3029 llvm::CachedHashString(MacroDef.split('=').first)))
3030 continue;
3031 }
3032
3033 code = hash_combine(code, I.first, I.second);
3034 }
3035
3036 // Extend the signature with the sysroot and other header search options.
3037 code = hash_combine(code, hsOpts.Sysroot,
3038 hsOpts.ModuleFormat,
3039 hsOpts.UseDebugInfo,
3040 hsOpts.UseBuiltinIncludes,
3041 hsOpts.UseStandardSystemIncludes,
3042 hsOpts.UseStandardCXXIncludes,
3043 hsOpts.UseLibcxx,
3044 hsOpts.ModulesValidateDiagnosticOptions);
3045 code = hash_combine(code, hsOpts.ResourceDir);
3046
3047 if (hsOpts.ModulesStrictContextHash) {
3048 hash_code SHPC = hash_combine_range(hsOpts.SystemHeaderPrefixes.begin(),
3049 hsOpts.SystemHeaderPrefixes.end());
3050 hash_code UEC = hash_combine_range(hsOpts.UserEntries.begin(),
3051 hsOpts.UserEntries.end());
3052 code = hash_combine(code, hsOpts.SystemHeaderPrefixes.size(), SHPC,
3053 hsOpts.UserEntries.size(), UEC);
3054
3055 const DiagnosticOptions &diagOpts = getDiagnosticOpts();
3056 #define DIAGOPT(Name, Bits, Default) \
3057 code = hash_combine(code, diagOpts.Name);
3058 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \
3059 code = hash_combine(code, diagOpts.get##Name());
3060 #include "clang/Basic/DiagnosticOptions.def"
3061 #undef DIAGOPT
3062 #undef ENUM_DIAGOPT
3063 }
3064
3065 // Extend the signature with the user build path.
3066 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
3067
3068 // Extend the signature with the module file extensions.
3069 const FrontendOptions &frontendOpts = getFrontendOpts();
3070 for (const auto &ext : frontendOpts.ModuleFileExtensions) {
3071 code = ext->hashExtension(code);
3072 }
3073
3074 // When compiling with -gmodules, also hash -fdebug-prefix-map as it
3075 // affects the debug info in the PCM.
3076 if (getCodeGenOpts().DebugTypeExtRefs)
3077 for (const auto &KeyValue : getCodeGenOpts().DebugPrefixMap)
3078 code = hash_combine(code, KeyValue.first, KeyValue.second);
3079
3080 // Extend the signature with the enabled sanitizers, if at least one is
3081 // enabled. Sanitizers which cannot affect AST generation aren't hashed.
3082 SanitizerSet SanHash = LangOpts->Sanitize;
3083 SanHash.clear(getPPTransparentSanitizers());
3084 if (!SanHash.empty())
3085 code = hash_combine(code, SanHash.Mask);
3086
3087 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
3088 }
3089
generateCC1CommandLine(SmallVectorImpl<const char * > & Args,StringAllocator SA) const3090 void CompilerInvocation::generateCC1CommandLine(
3091 SmallVectorImpl<const char *> &Args, StringAllocator SA) const {
3092 // Capture the extracted value as a lambda argument to avoid potential issues
3093 // with lifetime extension of the reference.
3094 #define GENERATE_OPTION_WITH_MARSHALLING( \
3095 ARGS, STRING_ALLOCATOR, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, \
3096 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, \
3097 TABLE_INDEX) \
3098 if ((FLAGS)&options::CC1Option) { \
3099 [&](const auto &Extracted) { \
3100 if (ALWAYS_EMIT || \
3101 (Extracted != \
3102 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \
3103 : (DEFAULT_VALUE)))) \
3104 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \
3105 TABLE_INDEX, Extracted); \
3106 }(EXTRACTOR(KEYPATH)); \
3107 }
3108
3109 #define OPTION_WITH_MARSHALLING( \
3110 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
3111 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
3112 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
3113 MERGER, EXTRACTOR, TABLE_INDEX) \
3114 GENERATE_OPTION_WITH_MARSHALLING(Args, SA, KIND, FLAGS, SPELLING, \
3115 ALWAYS_EMIT, this->KEYPATH, DEFAULT_VALUE, \
3116 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, \
3117 EXTRACTOR, TABLE_INDEX)
3118
3119 #define DIAG_OPTION_WITH_MARSHALLING OPTION_WITH_MARSHALLING
3120 #define LANG_OPTION_WITH_MARSHALLING OPTION_WITH_MARSHALLING
3121 #define CODEGEN_OPTION_WITH_MARSHALLING OPTION_WITH_MARSHALLING
3122
3123 #include "clang/Driver/Options.inc"
3124
3125 #undef CODEGEN_OPTION_WITH_MARSHALLING
3126 #undef LANG_OPTION_WITH_MARSHALLING
3127 #undef DIAG_OPTION_WITH_MARSHALLING
3128 #undef OPTION_WITH_MARSHALLING
3129 #undef GENERATE_OPTION_WITH_MARSHALLING
3130
3131 GenerateLangArgs(*LangOpts, Args, SA);
3132 }
3133
3134 IntrusiveRefCntPtr<llvm::vfs::FileSystem>
createVFSFromCompilerInvocation(const CompilerInvocation & CI,DiagnosticsEngine & Diags)3135 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI,
3136 DiagnosticsEngine &Diags) {
3137 return createVFSFromCompilerInvocation(CI, Diags,
3138 llvm::vfs::getRealFileSystem());
3139 }
3140
3141 IntrusiveRefCntPtr<llvm::vfs::FileSystem>
createVFSFromCompilerInvocation(const CompilerInvocation & CI,DiagnosticsEngine & Diags,IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS)3142 clang::createVFSFromCompilerInvocation(
3143 const CompilerInvocation &CI, DiagnosticsEngine &Diags,
3144 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) {
3145 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
3146 return BaseFS;
3147
3148 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS;
3149 // earlier vfs files are on the bottom
3150 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
3151 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
3152 Result->getBufferForFile(File);
3153 if (!Buffer) {
3154 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
3155 continue;
3156 }
3157
3158 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML(
3159 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File,
3160 /*DiagContext*/ nullptr, Result);
3161 if (!FS) {
3162 Diags.Report(diag::err_invalid_vfs_overlay) << File;
3163 continue;
3164 }
3165
3166 Result = FS;
3167 }
3168 return Result;
3169 }
3170