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/Diagnostic.h"
16#include "clang/Basic/DiagnosticDriver.h"
17#include "clang/Basic/DiagnosticFrontend.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/XRayInstr.h"
29#include "clang/Config/config.h"
30#include "clang/Frontend/CommandLineSourceLoc.h"
31#include "clang/Frontend/DependencyOutputOptions.h"
32#include "clang/Frontend/FrontendOptions.h"
33#include "clang/Frontend/MigratorOptions.h"
34#include "clang/Frontend/PreprocessorOutputOptions.h"
35#include "clang/Frontend/SSAFOptions.h"
36#include "clang/Frontend/TextDiagnosticBuffer.h"
37#include "clang/Frontend/Utils.h"
38#include "clang/Lex/HeaderSearchOptions.h"
39#include "clang/Lex/PreprocessorOptions.h"
40#include "clang/Options/Options.h"
41#include "clang/Serialization/ASTBitCodes.h"
42#include "clang/Serialization/ModuleFileExtension.h"
43#include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
44#include "llvm/ADT/APInt.h"
45#include "llvm/ADT/ArrayRef.h"
46#include "llvm/ADT/CachedHashString.h"
47#include "llvm/ADT/FloatingPointMode.h"
48#include "llvm/ADT/STLExtras.h"
49#include "llvm/ADT/SmallVector.h"
50#include "llvm/ADT/StringRef.h"
51#include "llvm/ADT/StringSwitch.h"
52#include "llvm/ADT/Twine.h"
53#include "llvm/Config/llvm-config.h"
54#include "llvm/Frontend/Debug/Options.h"
55#include "llvm/IR/DebugInfoMetadata.h"
56#include "llvm/Linker/Linker.h"
57#include "llvm/MC/MCTargetOptions.h"
58#include "llvm/Option/Arg.h"
59#include "llvm/Option/ArgList.h"
60#include "llvm/Option/OptSpecifier.h"
61#include "llvm/Option/OptTable.h"
62#include "llvm/Option/Option.h"
63#include "llvm/ProfileData/InstrProfReader.h"
64#include "llvm/Remarks/HotnessThresholdParser.h"
65#include "llvm/Support/CodeGen.h"
66#include "llvm/Support/Compiler.h"
67#include "llvm/Support/Error.h"
68#include "llvm/Support/ErrorHandling.h"
69#include "llvm/Support/ErrorOr.h"
70#include "llvm/Support/FileSystem.h"
71#include "llvm/Support/HashBuilder.h"
72#include "llvm/Support/MathExtras.h"
73#include "llvm/Support/MemoryBuffer.h"
74#include "llvm/Support/Path.h"
75#include "llvm/Support/Process.h"
76#include "llvm/Support/Regex.h"
77#include "llvm/Support/VersionTuple.h"
78#include "llvm/Support/VirtualFileSystem.h"
79#include "llvm/Support/raw_ostream.h"
80#include "llvm/Target/TargetOptions.h"
81#include "llvm/TargetParser/Host.h"
82#include "llvm/TargetParser/Triple.h"
83#include <algorithm>
84#include <cassert>
85#include <cstddef>
86#include <cstring>
87#include <ctime>
88#include <fstream>
89#include <limits>
90#include <memory>
91#include <optional>
92#include <string>
93#include <tuple>
94#include <type_traits>
95#include <utility>
96#include <vector>
97
98using namespace clang;
99using namespace options;
100using namespace llvm::opt;
101
102//===----------------------------------------------------------------------===//
103// Helpers.
104//===----------------------------------------------------------------------===//
105
106// Parse misexpect tolerance argument value.
107// Valid option values are integers in the range [0, 100)
108static Expected<std::optional<uint32_t>> parseToleranceOption(StringRef Arg) {
109 uint32_t Val;
110 if (Arg.getAsInteger(Radix: 10, Result&: Val))
111 return llvm::createStringError(EC: llvm::inconvertibleErrorCode(),
112 Fmt: "Not an integer: %s", Vals: Arg.data());
113 return Val;
114}
115
116//===----------------------------------------------------------------------===//
117// Initialization.
118//===----------------------------------------------------------------------===//
119
120template <class T> std::shared_ptr<T> make_shared_copy(const T &X) {
121 return std::make_shared<T>(X);
122}
123
124CompilerInvocationBase::CompilerInvocationBase()
125 : LangOpts(std::make_shared<LangOptions>()),
126 TargetOpts(std::make_shared<TargetOptions>()),
127 DiagnosticOpts(std::make_shared<DiagnosticOptions>()),
128 HSOpts(std::make_shared<HeaderSearchOptions>()),
129 PPOpts(std::make_shared<PreprocessorOptions>()),
130 AnalyzerOpts(std::make_shared<AnalyzerOptions>()),
131 MigratorOpts(std::make_shared<MigratorOptions>()),
132 APINotesOpts(std::make_shared<APINotesOptions>()),
133 CodeGenOpts(std::make_shared<CodeGenOptions>()),
134 FSOpts(std::make_shared<FileSystemOptions>()),
135 FrontendOpts(std::make_shared<FrontendOptions>()),
136 DependencyOutputOpts(std::make_shared<DependencyOutputOptions>()),
137 PreprocessorOutputOpts(std::make_shared<PreprocessorOutputOptions>()),
138 SSAFOpts(std::make_shared<ssaf::SSAFOptions>()) {}
139
140CompilerInvocationBase &
141CompilerInvocationBase::deep_copy_assign(const CompilerInvocationBase &X) {
142 if (this != &X) {
143 LangOpts = make_shared_copy(X: X.getLangOpts());
144 TargetOpts = make_shared_copy(X: X.getTargetOpts());
145 DiagnosticOpts = make_shared_copy(X: X.getDiagnosticOpts());
146 HSOpts = make_shared_copy(X: X.getHeaderSearchOpts());
147 PPOpts = make_shared_copy(X: X.getPreprocessorOpts());
148 AnalyzerOpts = make_shared_copy(X: X.getAnalyzerOpts());
149 MigratorOpts = make_shared_copy(X: X.getMigratorOpts());
150 APINotesOpts = make_shared_copy(X: X.getAPINotesOpts());
151 CodeGenOpts = make_shared_copy(X: X.getCodeGenOpts());
152 FSOpts = make_shared_copy(X: X.getFileSystemOpts());
153 FrontendOpts = make_shared_copy(X: X.getFrontendOpts());
154 DependencyOutputOpts = make_shared_copy(X: X.getDependencyOutputOpts());
155 PreprocessorOutputOpts = make_shared_copy(X: X.getPreprocessorOutputOpts());
156 SSAFOpts = make_shared_copy(X: X.getSSAFOpts());
157 }
158 return *this;
159}
160
161CompilerInvocationBase &
162CompilerInvocationBase::shallow_copy_assign(const CompilerInvocationBase &X) {
163 if (this != &X) {
164 LangOpts = X.LangOpts;
165 TargetOpts = X.TargetOpts;
166 DiagnosticOpts = X.DiagnosticOpts;
167 HSOpts = X.HSOpts;
168 PPOpts = X.PPOpts;
169 AnalyzerOpts = X.AnalyzerOpts;
170 MigratorOpts = X.MigratorOpts;
171 APINotesOpts = X.APINotesOpts;
172 CodeGenOpts = X.CodeGenOpts;
173 FSOpts = X.FSOpts;
174 FrontendOpts = X.FrontendOpts;
175 DependencyOutputOpts = X.DependencyOutputOpts;
176 PreprocessorOutputOpts = X.PreprocessorOutputOpts;
177 SSAFOpts = X.SSAFOpts;
178 }
179 return *this;
180}
181
182CompilerInvocation::CompilerInvocation(const CowCompilerInvocation &X)
183 : CompilerInvocationBase(EmptyConstructor{}) {
184 CompilerInvocationBase::deep_copy_assign(X);
185}
186
187CompilerInvocation &
188CompilerInvocation::operator=(const CowCompilerInvocation &X) {
189 CompilerInvocationBase::deep_copy_assign(X);
190 return *this;
191}
192
193template <typename T>
194T &ensureOwned(std::shared_ptr<T> &Storage) {
195 if (Storage.use_count() > 1)
196 Storage = std::make_shared<T>(*Storage);
197 return *Storage;
198}
199
200LangOptions &CowCompilerInvocation::getMutLangOpts() {
201 return ensureOwned(Storage&: LangOpts);
202}
203
204TargetOptions &CowCompilerInvocation::getMutTargetOpts() {
205 return ensureOwned(Storage&: TargetOpts);
206}
207
208DiagnosticOptions &CowCompilerInvocation::getMutDiagnosticOpts() {
209 return ensureOwned(Storage&: DiagnosticOpts);
210}
211
212HeaderSearchOptions &CowCompilerInvocation::getMutHeaderSearchOpts() {
213 return ensureOwned(Storage&: HSOpts);
214}
215
216PreprocessorOptions &CowCompilerInvocation::getMutPreprocessorOpts() {
217 return ensureOwned(Storage&: PPOpts);
218}
219
220AnalyzerOptions &CowCompilerInvocation::getMutAnalyzerOpts() {
221 return ensureOwned(Storage&: AnalyzerOpts);
222}
223
224MigratorOptions &CowCompilerInvocation::getMutMigratorOpts() {
225 return ensureOwned(Storage&: MigratorOpts);
226}
227
228APINotesOptions &CowCompilerInvocation::getMutAPINotesOpts() {
229 return ensureOwned(Storage&: APINotesOpts);
230}
231
232CodeGenOptions &CowCompilerInvocation::getMutCodeGenOpts() {
233 return ensureOwned(Storage&: CodeGenOpts);
234}
235
236FileSystemOptions &CowCompilerInvocation::getMutFileSystemOpts() {
237 return ensureOwned(Storage&: FSOpts);
238}
239
240FrontendOptions &CowCompilerInvocation::getMutFrontendOpts() {
241 return ensureOwned(Storage&: FrontendOpts);
242}
243
244ssaf::SSAFOptions &CowCompilerInvocation::getMutSSAFOpts() {
245 return ensureOwned(Storage&: SSAFOpts);
246}
247
248DependencyOutputOptions &CowCompilerInvocation::getMutDependencyOutputOpts() {
249 return ensureOwned(Storage&: DependencyOutputOpts);
250}
251
252PreprocessorOutputOptions &
253CowCompilerInvocation::getMutPreprocessorOutputOpts() {
254 return ensureOwned(Storage&: PreprocessorOutputOpts);
255}
256
257//===----------------------------------------------------------------------===//
258// Normalizers
259//===----------------------------------------------------------------------===//
260
261using ArgumentConsumer = CompilerInvocation::ArgumentConsumer;
262
263static llvm::StringRef lookupStrInTable(unsigned Offset) {
264 return getDriverOptTable().getStrTable()[Offset];
265}
266
267#define SIMPLE_ENUM_VALUE_TABLE
268#include "clang/Options/Options.inc"
269#undef SIMPLE_ENUM_VALUE_TABLE
270
271static std::optional<bool> normalizeSimpleFlag(OptSpecifier Opt,
272 unsigned TableIndex,
273 const ArgList &Args,
274 DiagnosticsEngine &Diags) {
275 if (Args.hasArg(Ids: Opt))
276 return true;
277 return std::nullopt;
278}
279
280static std::optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt,
281 unsigned,
282 const ArgList &Args,
283 DiagnosticsEngine &) {
284 if (Args.hasArg(Ids: Opt))
285 return false;
286 return std::nullopt;
287}
288
289/// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but
290/// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with
291/// unnecessary template instantiations and just ignore it with a variadic
292/// argument.
293static void denormalizeSimpleFlag(ArgumentConsumer Consumer,
294 unsigned SpellingOffset, Option::OptionClass,
295 unsigned, /*T*/...) {
296 Consumer(lookupStrInTable(Offset: SpellingOffset));
297}
298static void denormalizeSimpleFlag(ArgumentConsumer Consumer,
299 const Twine &Spelling, Option::OptionClass,
300 unsigned, /*T*/...) {
301 Consumer(Spelling);
302}
303
304template <typename T> static constexpr bool is_uint64_t_convertible() {
305 return !std::is_same_v<T, uint64_t> && llvm::is_integral_or_enum<T>::value;
306}
307
308template <typename T,
309 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false>
310static auto makeFlagToValueNormalizer(T Value) {
311 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args,
312 DiagnosticsEngine &) -> std::optional<T> {
313 if (Args.hasArg(Ids: Opt))
314 return Value;
315 return std::nullopt;
316 };
317}
318
319template <typename T,
320 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false>
321static auto makeFlagToValueNormalizer(T Value) {
322 return makeFlagToValueNormalizer(Value: uint64_t(Value));
323}
324
325static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue,
326 OptSpecifier OtherOpt) {
327 return [Value, OtherValue,
328 OtherOpt](OptSpecifier Opt, unsigned, const ArgList &Args,
329 DiagnosticsEngine &) -> std::optional<bool> {
330 if (const Arg *A = Args.getLastArg(Ids: Opt, Ids: OtherOpt)) {
331 return A->getOption().matches(ID: Opt) ? Value : OtherValue;
332 }
333 return std::nullopt;
334 };
335}
336
337static auto makeBooleanOptionDenormalizer(bool Value) {
338 return [Value](ArgumentConsumer Consumer, unsigned SpellingOffset,
339 Option::OptionClass, unsigned, bool KeyPath) {
340 if (KeyPath == Value)
341 Consumer(lookupStrInTable(Offset: SpellingOffset));
342 };
343}
344
345static void denormalizeStringImpl(ArgumentConsumer Consumer,
346 const Twine &Spelling,
347 Option::OptionClass OptClass, unsigned,
348 const Twine &Value) {
349 switch (OptClass) {
350 case Option::SeparateClass:
351 case Option::JoinedOrSeparateClass:
352 case Option::JoinedAndSeparateClass:
353 Consumer(Spelling);
354 Consumer(Value);
355 break;
356 case Option::JoinedClass:
357 case Option::CommaJoinedClass:
358 Consumer(Spelling + Value);
359 break;
360 default:
361 llvm_unreachable("Cannot denormalize an option with option class "
362 "incompatible with string denormalization.");
363 }
364}
365
366template <typename T>
367static void
368denormalizeString(ArgumentConsumer Consumer, unsigned SpellingOffset,
369 Option::OptionClass OptClass, unsigned TableIndex, T Value) {
370 denormalizeStringImpl(Consumer, Spelling: lookupStrInTable(Offset: SpellingOffset), OptClass,
371 TableIndex, Value: Twine(Value));
372}
373
374template <typename T>
375static void denormalizeString(ArgumentConsumer Consumer, const Twine &Spelling,
376 Option::OptionClass OptClass, unsigned TableIndex,
377 T Value) {
378 denormalizeStringImpl(Consumer, Spelling, OptClass, TableIndex, Value: Twine(Value));
379}
380
381static std::optional<SimpleEnumValue>
382findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) {
383 for (int I = 0, E = Table.Size; I != E; ++I)
384 if (Name == Table.Table[I].Name)
385 return Table.Table[I];
386
387 return std::nullopt;
388}
389
390static std::optional<SimpleEnumValue>
391findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) {
392 for (int I = 0, E = Table.Size; I != E; ++I)
393 if (Value == Table.Table[I].Value)
394 return Table.Table[I];
395
396 return std::nullopt;
397}
398
399static std::optional<unsigned> normalizeSimpleEnum(OptSpecifier Opt,
400 unsigned TableIndex,
401 const ArgList &Args,
402 DiagnosticsEngine &Diags) {
403 assert(TableIndex < SimpleEnumValueTablesSize);
404 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex];
405
406 auto *Arg = Args.getLastArg(Ids: Opt);
407 if (!Arg)
408 return std::nullopt;
409
410 StringRef ArgValue = Arg->getValue();
411 if (auto MaybeEnumVal = findValueTableByName(Table, Name: ArgValue))
412 return MaybeEnumVal->Value;
413
414 Diags.Report(DiagID: diag::err_drv_invalid_value)
415 << Arg->getAsString(Args) << ArgValue;
416 return std::nullopt;
417}
418
419static void denormalizeSimpleEnumImpl(ArgumentConsumer Consumer,
420 unsigned SpellingOffset,
421 Option::OptionClass OptClass,
422 unsigned TableIndex, unsigned Value) {
423 assert(TableIndex < SimpleEnumValueTablesSize);
424 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex];
425 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) {
426 denormalizeString(Consumer, Spelling: lookupStrInTable(Offset: SpellingOffset), OptClass,
427 TableIndex, Value: MaybeEnumVal->Name);
428 } else {
429 llvm_unreachable("The simple enum value was not correctly defined in "
430 "the tablegen option description");
431 }
432}
433
434template <typename T>
435static void denormalizeSimpleEnum(ArgumentConsumer Consumer,
436 unsigned SpellingOffset,
437 Option::OptionClass OptClass,
438 unsigned TableIndex, T Value) {
439 return denormalizeSimpleEnumImpl(Consumer, SpellingOffset, OptClass,
440 TableIndex, Value: static_cast<unsigned>(Value));
441}
442
443static std::optional<std::string> normalizeString(OptSpecifier Opt,
444 int TableIndex,
445 const ArgList &Args,
446 DiagnosticsEngine &Diags) {
447 auto *Arg = Args.getLastArg(Ids: Opt);
448 if (!Arg)
449 return std::nullopt;
450 return std::string(Arg->getValue());
451}
452
453template <typename IntTy>
454static std::optional<IntTy> normalizeStringIntegral(OptSpecifier Opt, int,
455 const ArgList &Args,
456 DiagnosticsEngine &Diags) {
457 auto *Arg = Args.getLastArg(Ids: Opt);
458 if (!Arg)
459 return std::nullopt;
460 IntTy Res;
461 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) {
462 Diags.Report(DiagID: diag::err_drv_invalid_int_value)
463 << Arg->getAsString(Args) << Arg->getValue();
464 return std::nullopt;
465 }
466 return Res;
467}
468
469static std::optional<std::vector<std::string>>
470normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args,
471 DiagnosticsEngine &) {
472 return Args.getAllArgValues(Id: Opt);
473}
474
475static void denormalizeStringVector(ArgumentConsumer Consumer,
476 unsigned SpellingOffset,
477 Option::OptionClass OptClass,
478 unsigned TableIndex,
479 const std::vector<std::string> &Values) {
480 switch (OptClass) {
481 case Option::CommaJoinedClass: {
482 std::string CommaJoinedValue;
483 if (!Values.empty()) {
484 CommaJoinedValue.append(str: Values.front());
485 for (const std::string &Value : llvm::drop_begin(RangeOrContainer: Values, N: 1)) {
486 CommaJoinedValue.append(s: ",");
487 CommaJoinedValue.append(str: Value);
488 }
489 }
490 denormalizeString(Consumer, SpellingOffset,
491 OptClass: Option::OptionClass::JoinedClass, TableIndex,
492 Value: CommaJoinedValue);
493 break;
494 }
495 case Option::JoinedClass:
496 case Option::SeparateClass:
497 case Option::JoinedOrSeparateClass:
498 for (const std::string &Value : Values)
499 denormalizeString(Consumer, SpellingOffset, OptClass, TableIndex, Value);
500 break;
501 default:
502 llvm_unreachable("Cannot denormalize an option with option class "
503 "incompatible with string vector denormalization.");
504 }
505}
506
507static std::optional<std::string> normalizeTriple(OptSpecifier Opt,
508 int TableIndex,
509 const ArgList &Args,
510 DiagnosticsEngine &Diags) {
511 auto *Arg = Args.getLastArg(Ids: Opt);
512 if (!Arg)
513 return std::nullopt;
514 return llvm::Triple::normalize(Str: Arg->getValue());
515}
516
517#define PARSE_OPTION_WITH_MARSHALLING( \
518 ARGS, DIAGS, PREFIX_TYPE, SPELLING_OFFSET, ID, KIND, GROUP, ALIAS, \
519 ALIASARGS, FLAGS, VISIBILITY, PARAM, HELPTEXT, HELPTEXTSFORVARIANTS, \
520 METAVAR, VALUES, SUBCOMMANDIDS_OFFSET, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
521 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
522 TABLE_INDEX) \
523 if ((VISIBILITY) & options::CC1Option) { \
524 KEYPATH = static_cast<decltype(KEYPATH)>(DEFAULT_VALUE); \
525 if (IMPLIED_CHECK) \
526 KEYPATH = static_cast<decltype(KEYPATH)>(IMPLIED_VALUE); \
527 if (SHOULD_PARSE) \
528 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \
529 KEYPATH = static_cast<decltype(KEYPATH)>(*MaybeValue); \
530 }
531
532#define GENERATE_OPTION_WITH_MARSHALLING( \
533 CONSUMER, PREFIX_TYPE, SPELLING_OFFSET, ID, KIND, GROUP, ALIAS, ALIASARGS, \
534 FLAGS, VISIBILITY, PARAM, HELPTEXT, HELPTEXTSFORVARIANTS, METAVAR, VALUES, \
535 SUBCOMMANDIDS_OFFSET, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
536 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, TABLE_INDEX) \
537 if ((VISIBILITY) & options::CC1Option) { \
538 if (ALWAYS_EMIT || (KEYPATH != static_cast<decltype(KEYPATH)>( \
539 ((IMPLIED_CHECK) ? (IMPLIED_VALUE) \
540 : (DEFAULT_VALUE))))) \
541 DENORMALIZER(CONSUMER, SPELLING_OFFSET, Option::KIND##Class, \
542 TABLE_INDEX, KEYPATH); \
543 }
544
545static StringRef GetInputKindName(InputKind IK);
546
547static bool FixupInvocation(CompilerInvocation &Invocation,
548 DiagnosticsEngine &Diags, const ArgList &Args,
549 InputKind IK) {
550 unsigned NumErrorsBefore = Diags.getNumErrors();
551
552 LangOptions &LangOpts = Invocation.getLangOpts();
553 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts();
554 TargetOptions &TargetOpts = Invocation.getTargetOpts();
555 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts();
556 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument;
557 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents;
558 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents;
559 CodeGenOpts.DisableFree = FrontendOpts.DisableFree;
560 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex;
561 if (FrontendOpts.ShowStats)
562 CodeGenOpts.ClearASTBeforeBackend = false;
563 LangOpts.SanitizeCoverage = CodeGenOpts.hasSanitizeCoverage();
564 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables;
565 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening;
566 LangOpts.CurrentModule = LangOpts.ModuleName;
567
568 llvm::Triple T(TargetOpts.Triple);
569 llvm::Triple::ArchType Arch = T.getArch();
570
571 CodeGenOpts.CodeModel = TargetOpts.CodeModel;
572 CodeGenOpts.LargeDataThreshold = TargetOpts.LargeDataThreshold;
573
574 if (CodeGenOpts.getExceptionHandling() !=
575 CodeGenOptions::ExceptionHandlingKind::Default &&
576 T.isWindowsMSVCEnvironment())
577 Diags.Report(DiagID: diag::err_fe_invalid_exception_model)
578 << static_cast<unsigned>(CodeGenOpts.getExceptionHandling()) << T.str();
579
580 if (LangOpts.AppleKext && !LangOpts.CPlusPlus)
581 Diags.Report(DiagID: diag::warn_c_kext);
582
583 if (LangOpts.NewAlignOverride &&
584 !llvm::isPowerOf2_32(Value: LangOpts.NewAlignOverride)) {
585 Arg *A = Args.getLastArg(Ids: OPT_fnew_alignment_EQ);
586 Diags.Report(DiagID: diag::err_fe_invalid_alignment)
587 << A->getAsString(Args) << A->getValue();
588 LangOpts.NewAlignOverride = 0;
589 }
590
591 // The -f[no-]raw-string-literals option is only valid in C and in C++
592 // standards before C++11.
593 if (LangOpts.CPlusPlus11) {
594 if (Args.hasArg(Ids: OPT_fraw_string_literals, Ids: OPT_fno_raw_string_literals)) {
595 Args.claimAllArgs(Ids: OPT_fraw_string_literals, Ids: OPT_fno_raw_string_literals);
596 Diags.Report(DiagID: diag::warn_drv_fraw_string_literals_in_cxx11)
597 << bool(LangOpts.RawStringLiterals);
598 }
599
600 // Do not allow disabling raw string literals in C++11 or later.
601 LangOpts.RawStringLiterals = true;
602 }
603
604 if (Args.hasArg(Ids: OPT_freflection) && !LangOpts.CPlusPlus26) {
605 Diags.Report(DiagID: diag::err_drv_reflection_requires_cxx26)
606 << Args.getLastArg(Ids: options::OPT_freflection)->getAsString(Args);
607 }
608
609 LangOpts.NamedLoops =
610 Args.hasFlag(Pos: OPT_fnamed_loops, Neg: OPT_fno_named_loops, Default: LangOpts.C2y);
611
612 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host.
613 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost)
614 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device"
615 << "-fsycl-is-host";
616
617 // SYCL requires C++; reject C inputs on both device and host.
618 if ((LangOpts.SYCLIsDevice || LangOpts.SYCLIsHost) && !LangOpts.CPlusPlus)
619 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
620 << GetInputKindName(IK) << "-fsycl";
621
622 if (Args.hasArg(Ids: OPT_fgnu89_inline) && LangOpts.CPlusPlus)
623 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
624 << "-fgnu89-inline" << GetInputKindName(IK);
625
626 if (Args.hasArg(Ids: OPT_hlsl_entrypoint) && !LangOpts.HLSL)
627 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
628 << "-hlsl-entry" << GetInputKindName(IK);
629
630 if (Args.hasArg(Ids: OPT_fdx_rootsignature_version) && !LangOpts.HLSL)
631 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
632 << "-fdx-rootsignature-version" << GetInputKindName(IK);
633
634 if (Args.hasArg(Ids: OPT_fdx_rootsignature_define) && !LangOpts.HLSL)
635 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
636 << "-fdx-rootsignature-define" << GetInputKindName(IK);
637
638 if (Args.hasArg(Ids: OPT_fgpu_allow_device_init) && !LangOpts.HIP)
639 Diags.Report(DiagID: diag::warn_ignored_hip_only_option)
640 << Args.getLastArg(Ids: OPT_fgpu_allow_device_init)->getAsString(Args);
641
642 if (Args.hasArg(Ids: OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP)
643 Diags.Report(DiagID: diag::warn_ignored_hip_only_option)
644 << Args.getLastArg(Ids: OPT_gpu_max_threads_per_block_EQ)->getAsString(Args);
645
646 // HLSL invocations should always have -Wconversion, -Wvector-conversion, and
647 // -Wmatrix-conversion by default.
648 if (LangOpts.HLSL) {
649 auto &Warnings = Invocation.getDiagnosticOpts().Warnings;
650 if (!llvm::is_contained(Range&: Warnings, Element: "conversion"))
651 Warnings.insert(position: Warnings.begin(), x: "conversion");
652 if (!llvm::is_contained(Range&: Warnings, Element: "vector-conversion"))
653 Warnings.insert(position: Warnings.begin(), x: "vector-conversion");
654 if (!llvm::is_contained(Range&: Warnings, Element: "matrix-conversion"))
655 Warnings.insert(position: Warnings.begin(), x: "matrix-conversion");
656 }
657
658 // When these options are used, the compiler is allowed to apply
659 // optimizations that may affect the final result. For example
660 // (x+y)+z is transformed to x+(y+z) but may not give the same
661 // final result; it's not value safe.
662 // Another example can be to simplify x/x to 1.0 but x could be 0.0, INF
663 // or NaN. Final result may then differ. An error is issued when the eval
664 // method is set with one of these options.
665 if (Args.hasArg(Ids: OPT_ffp_eval_method_EQ)) {
666 if (LangOpts.ApproxFunc)
667 Diags.Report(DiagID: diag::err_incompatible_fp_eval_method_options) << 0;
668 if (LangOpts.AllowFPReassoc)
669 Diags.Report(DiagID: diag::err_incompatible_fp_eval_method_options) << 1;
670 if (LangOpts.AllowRecip)
671 Diags.Report(DiagID: diag::err_incompatible_fp_eval_method_options) << 2;
672 }
673
674 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
675 // This option should be deprecated for CL > 1.0 because
676 // this option was added for compatibility with OpenCL 1.0.
677 if (Args.getLastArg(Ids: OPT_cl_strict_aliasing) &&
678 (LangOpts.getOpenCLCompatibleVersion() > 100))
679 Diags.Report(DiagID: diag::warn_option_invalid_ocl_version)
680 << LangOpts.getOpenCLVersionString()
681 << Args.getLastArg(Ids: OPT_cl_strict_aliasing)->getAsString(Args);
682
683 if (Arg *A = Args.getLastArg(Ids: OPT_fdefault_calling_conv_EQ)) {
684 auto DefaultCC = LangOpts.getDefaultCallingConv();
685
686 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
687 DefaultCC == LangOptions::DCC_StdCall) &&
688 Arch != llvm::Triple::x86;
689 emitError |= (DefaultCC == LangOptions::DCC_VectorCall ||
690 DefaultCC == LangOptions::DCC_RegCall) &&
691 !T.isX86();
692 emitError |= DefaultCC == LangOptions::DCC_RtdCall && Arch != llvm::Triple::m68k;
693 if (emitError)
694 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
695 << A->getSpelling() << T.getTriple();
696 }
697
698 return Diags.getNumErrors() == NumErrorsBefore;
699}
700
701//===----------------------------------------------------------------------===//
702// Deserialization (from args)
703//===----------------------------------------------------------------------===//
704
705static void GenerateArg(ArgumentConsumer Consumer,
706 llvm::opt::OptSpecifier OptSpecifier) {
707 Option Opt = getDriverOptTable().getOption(Opt: OptSpecifier);
708 denormalizeSimpleFlag(Consumer, Spelling: Opt.getPrefixedName(),
709 Option::OptionClass::FlagClass, 0);
710}
711
712static void GenerateArg(ArgumentConsumer Consumer,
713 llvm::opt::OptSpecifier OptSpecifier,
714 const Twine &Value) {
715 Option Opt = getDriverOptTable().getOption(Opt: OptSpecifier);
716 denormalizeString(Consumer, Spelling: Opt.getPrefixedName(), OptClass: Opt.getKind(), TableIndex: 0, Value);
717}
718
719// Parse command line arguments into CompilerInvocation.
720using ParseFn =
721 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>,
722 DiagnosticsEngine &, const char *)>;
723
724// Generate command line arguments from CompilerInvocation.
725using GenerateFn = llvm::function_ref<void(
726 CompilerInvocation &, SmallVectorImpl<const char *> &,
727 CompilerInvocation::StringAllocator)>;
728
729/// May perform round-trip of command line arguments. By default, the round-trip
730/// is enabled in assert builds. This can be overwritten at run-time via the
731/// "-round-trip-args" and "-no-round-trip-args" command line flags, or via the
732/// ForceRoundTrip parameter.
733///
734/// During round-trip, the command line arguments are parsed into a dummy
735/// CompilerInvocation, which is used to generate the command line arguments
736/// again. The real CompilerInvocation is then created by parsing the generated
737/// arguments, not the original ones. This (in combination with tests covering
738/// argument behavior) ensures the generated command line is complete (doesn't
739/// drop/mangle any arguments).
740///
741/// Finally, we check the command line that was used to create the real
742/// CompilerInvocation instance. By default, we compare it to the command line
743/// the real CompilerInvocation generates. This checks whether the generator is
744/// deterministic. If \p CheckAgainstOriginalInvocation is enabled, we instead
745/// compare it to the original command line to verify the original command-line
746/// was canonical and can round-trip exactly.
747static bool RoundTrip(ParseFn Parse, GenerateFn Generate,
748 CompilerInvocation &RealInvocation,
749 CompilerInvocation &DummyInvocation,
750 ArrayRef<const char *> CommandLineArgs,
751 DiagnosticsEngine &Diags, const char *Argv0,
752 bool CheckAgainstOriginalInvocation = false,
753 bool ForceRoundTrip = false) {
754#ifndef NDEBUG
755 bool DoRoundTripDefault = true;
756#else
757 bool DoRoundTripDefault = false;
758#endif
759
760 bool DoRoundTrip = DoRoundTripDefault;
761 if (ForceRoundTrip) {
762 DoRoundTrip = true;
763 } else {
764 for (const auto *Arg : CommandLineArgs) {
765 if (Arg == StringRef("-round-trip-args"))
766 DoRoundTrip = true;
767 if (Arg == StringRef("-no-round-trip-args"))
768 DoRoundTrip = false;
769 }
770 }
771
772 // If round-trip was not requested, simply run the parser with the real
773 // invocation diagnostics.
774 if (!DoRoundTrip)
775 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0);
776
777 // Serializes quoted (and potentially escaped) arguments.
778 auto SerializeArgs = [](ArrayRef<const char *> Args) {
779 std::string Buffer;
780 llvm::raw_string_ostream OS(Buffer);
781 for (const char *Arg : Args) {
782 llvm::sys::printArg(OS, Arg, /*Quote=*/true);
783 OS << ' ';
784 }
785 return Buffer;
786 };
787
788 // Setup a dummy DiagnosticsEngine.
789 DiagnosticOptions DummyDiagOpts;
790 DiagnosticsEngine DummyDiags(DiagnosticIDs::create(), DummyDiagOpts);
791 DummyDiags.setClient(client: new TextDiagnosticBuffer());
792
793 // Run the first parse on the original arguments with the dummy invocation and
794 // diagnostics.
795 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) ||
796 DummyDiags.getNumWarnings() != 0) {
797 // If the first parse did not succeed, it must be user mistake (invalid
798 // command line arguments). We won't be able to generate arguments that
799 // would reproduce the same result. Let's fail again with the real
800 // invocation and diagnostics, so all side-effects of parsing are visible.
801 unsigned NumWarningsBefore = Diags.getNumWarnings();
802 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0);
803 if (!Success || Diags.getNumWarnings() != NumWarningsBefore)
804 return Success;
805
806 // Parse with original options and diagnostics succeeded even though it
807 // shouldn't have. Something is off.
808 Diags.Report(DiagID: diag::err_cc1_round_trip_fail_then_ok);
809 Diags.Report(DiagID: diag::note_cc1_round_trip_original)
810 << SerializeArgs(CommandLineArgs);
811 return false;
812 }
813
814 // Setup string allocator.
815 llvm::BumpPtrAllocator Alloc;
816 llvm::StringSaver StringPool(Alloc);
817 auto SA = [&StringPool](const Twine &Arg) {
818 return StringPool.save(S: Arg).data();
819 };
820
821 // Generate arguments from the dummy invocation. If Generate is the
822 // inverse of Parse, the newly generated arguments must have the same
823 // semantics as the original.
824 SmallVector<const char *> GeneratedArgs;
825 Generate(DummyInvocation, GeneratedArgs, SA);
826
827 // Run the second parse, now on the generated arguments, and with the real
828 // invocation and diagnostics. The result is what we will end up using for the
829 // rest of compilation, so if Generate is not inverse of Parse, something down
830 // the line will break.
831 bool Success2 = Parse(RealInvocation, GeneratedArgs, Diags, Argv0);
832
833 // The first parse on original arguments succeeded, but second parse of
834 // generated arguments failed. Something must be wrong with the generator.
835 if (!Success2) {
836 Diags.Report(DiagID: diag::err_cc1_round_trip_ok_then_fail);
837 Diags.Report(DiagID: diag::note_cc1_round_trip_generated)
838 << 1 << SerializeArgs(GeneratedArgs);
839 return false;
840 }
841
842 SmallVector<const char *> ComparisonArgs;
843 if (CheckAgainstOriginalInvocation)
844 // Compare against original arguments.
845 ComparisonArgs.assign(in_start: CommandLineArgs.begin(), in_end: CommandLineArgs.end());
846 else
847 // Generate arguments again, this time from the options we will end up using
848 // for the rest of the compilation.
849 Generate(RealInvocation, ComparisonArgs, SA);
850
851 // Compares two lists of arguments.
852 auto Equal = [](const ArrayRef<const char *> A,
853 const ArrayRef<const char *> B) {
854 return llvm::equal(LRange: A, RRange: B, P: [](const char *AElem, const char *BElem) {
855 return StringRef(AElem) == StringRef(BElem);
856 });
857 };
858
859 // If we generated different arguments from what we assume are two
860 // semantically equivalent CompilerInvocations, the Generate function may
861 // be non-deterministic.
862 if (!Equal(GeneratedArgs, ComparisonArgs)) {
863 Diags.Report(DiagID: diag::err_cc1_round_trip_mismatch);
864 Diags.Report(DiagID: diag::note_cc1_round_trip_generated)
865 << 1 << SerializeArgs(GeneratedArgs);
866 Diags.Report(DiagID: diag::note_cc1_round_trip_generated)
867 << 2 << SerializeArgs(ComparisonArgs);
868 return false;
869 }
870
871 Diags.Report(DiagID: diag::remark_cc1_round_trip_generated)
872 << 1 << SerializeArgs(GeneratedArgs);
873 Diags.Report(DiagID: diag::remark_cc1_round_trip_generated)
874 << 2 << SerializeArgs(ComparisonArgs);
875
876 return Success2;
877}
878
879bool CompilerInvocation::checkCC1RoundTrip(ArrayRef<const char *> Args,
880 DiagnosticsEngine &Diags,
881 const char *Argv0) {
882 CompilerInvocation DummyInvocation1, DummyInvocation2;
883 return RoundTrip(
884 Parse: [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs,
885 DiagnosticsEngine &Diags, const char *Argv0) {
886 return CreateFromArgsImpl(Res&: Invocation, CommandLineArgs, Diags, Argv0);
887 },
888 Generate: [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args,
889 StringAllocator SA) {
890 Args.push_back(Elt: "-cc1");
891 Invocation.generateCC1CommandLine(Args, SA);
892 },
893 RealInvocation&: DummyInvocation1, DummyInvocation&: DummyInvocation2, CommandLineArgs: Args, Diags, Argv0,
894 /*CheckAgainstOriginalInvocation=*/true, /*ForceRoundTrip=*/true);
895}
896
897static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
898 OptSpecifier GroupWithValue,
899 std::vector<std::string> &Diagnostics) {
900 for (auto *A : Args.filtered(Ids: Group)) {
901 if (A->getOption().getKind() == Option::FlagClass) {
902 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
903 // its name (minus the "W" or "R" at the beginning) to the diagnostics.
904 Diagnostics.push_back(
905 x: std::string(A->getOption().getName().drop_front(N: 1)));
906 } else if (A->getOption().matches(ID: GroupWithValue)) {
907 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic
908 // group. Add only the group name to the diagnostics.
909 Diagnostics.push_back(
910 x: std::string(A->getOption().getName().drop_front(N: 1).rtrim(Chars: "=-")));
911 } else {
912 // Otherwise, add its value (for OPT_W_Joined and similar).
913 Diagnostics.push_back(x: A->getValue());
914 }
915 }
916}
917
918// Parse the Static Analyzer configuration. If \p Diags is set to nullptr,
919// it won't verify the input.
920static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
921 DiagnosticsEngine *Diags);
922
923static void getAllNoBuiltinFuncValues(ArgList &Args,
924 std::vector<std::string> &Funcs) {
925 std::vector<std::string> Values = Args.getAllArgValues(Id: OPT_fno_builtin_);
926 auto BuiltinEnd = llvm::partition(Range&: Values, P: Builtin::Context::isBuiltinFunc);
927 Funcs.insert(position: Funcs.end(), first: Values.begin(), last: BuiltinEnd);
928}
929
930static void GenerateAnalyzerArgs(const AnalyzerOptions &Opts,
931 ArgumentConsumer Consumer) {
932 const AnalyzerOptions *AnalyzerOpts = &Opts;
933
934#define ANALYZER_OPTION_WITH_MARSHALLING(...) \
935 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
936#include "clang/Options/Options.inc"
937#undef ANALYZER_OPTION_WITH_MARSHALLING
938
939 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
940 switch (Opts.AnalysisConstraintsOpt) {
941#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
942 case NAME##Model: \
943 GenerateArg(Consumer, OPT_analyzer_constraints, CMDFLAG); \
944 break;
945#include "clang/StaticAnalyzer/Core/Analyses.def"
946 default:
947 llvm_unreachable("Tried to generate unknown analysis constraint.");
948 }
949 }
950
951 if (Opts.AnalysisDiagOpt != PD_HTML) {
952 switch (Opts.AnalysisDiagOpt) {
953#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
954 case PD_##NAME: \
955 GenerateArg(Consumer, OPT_analyzer_output, CMDFLAG); \
956 break;
957#include "clang/StaticAnalyzer/Core/Analyses.def"
958 default:
959 llvm_unreachable("Tried to generate unknown analysis diagnostic client.");
960 }
961 }
962
963 if (Opts.AnalysisPurgeOpt != PurgeStmt) {
964 switch (Opts.AnalysisPurgeOpt) {
965#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
966 case NAME: \
967 GenerateArg(Consumer, OPT_analyzer_purge, CMDFLAG); \
968 break;
969#include "clang/StaticAnalyzer/Core/Analyses.def"
970 default:
971 llvm_unreachable("Tried to generate unknown analysis purge mode.");
972 }
973 }
974
975 if (Opts.InliningMode != NoRedundancy) {
976 switch (Opts.InliningMode) {
977#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
978 case NAME: \
979 GenerateArg(Consumer, OPT_analyzer_inlining_mode, CMDFLAG); \
980 break;
981#include "clang/StaticAnalyzer/Core/Analyses.def"
982 default:
983 llvm_unreachable("Tried to generate unknown analysis inlining mode.");
984 }
985 }
986
987 for (const auto &CP : Opts.CheckersAndPackages) {
988 OptSpecifier Opt =
989 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker;
990 GenerateArg(Consumer, OptSpecifier: Opt, Value: CP.first);
991 }
992
993 AnalyzerOptions ConfigOpts;
994 parseAnalyzerConfigs(AnOpts&: ConfigOpts, Diags: nullptr);
995
996 // Sort options by key to avoid relying on StringMap iteration order.
997 SmallVector<std::pair<StringRef, StringRef>, 4> SortedConfigOpts;
998 for (const auto &C : Opts.Config)
999 SortedConfigOpts.emplace_back(Args: C.getKey(), Args: C.getValue());
1000 llvm::sort(C&: SortedConfigOpts, Comp: llvm::less_first());
1001
1002 for (const auto &[Key, Value] : SortedConfigOpts) {
1003 // Don't generate anything that came from parseAnalyzerConfigs. It would be
1004 // redundant and may not be valid on the command line.
1005 auto Entry = ConfigOpts.Config.find(Key);
1006 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == Value)
1007 continue;
1008
1009 GenerateArg(Consumer, OptSpecifier: OPT_analyzer_config, Value: Key + "=" + Value);
1010 }
1011
1012 // Nothing to generate for FullCompilerInvocation.
1013}
1014
1015static void GenerateSSAFArgs(const ssaf::SSAFOptions &Opts,
1016 ArgumentConsumer Consumer) {
1017 const ssaf::SSAFOptions *SSAFOpts = &Opts;
1018
1019#define SSAF_OPTION_WITH_MARSHALLING(...) \
1020 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
1021#include "clang/Options/Options.inc"
1022#undef SSAF_OPTION_WITH_MARSHALLING
1023}
1024
1025static bool ParseSSAFArgs(ssaf::SSAFOptions &Opts, ArgList &Args,
1026 DiagnosticsEngine &Diags) {
1027 unsigned NumErrorsBefore = Diags.getNumErrors();
1028
1029 ssaf::SSAFOptions *SSAFOpts = &Opts;
1030
1031#define SSAF_OPTION_WITH_MARSHALLING(...) \
1032 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
1033#include "clang/Options/Options.inc"
1034#undef SSAF_OPTION_WITH_MARSHALLING
1035
1036 return Diags.getNumErrors() == NumErrorsBefore;
1037}
1038
1039static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
1040 DiagnosticsEngine &Diags) {
1041 unsigned NumErrorsBefore = Diags.getNumErrors();
1042
1043 AnalyzerOptions *AnalyzerOpts = &Opts;
1044
1045#define ANALYZER_OPTION_WITH_MARSHALLING(...) \
1046 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
1047#include "clang/Options/Options.inc"
1048#undef ANALYZER_OPTION_WITH_MARSHALLING
1049
1050 if (Arg *A = Args.getLastArg(Ids: OPT_analyzer_constraints)) {
1051 StringRef Name = A->getValue();
1052 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
1053#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
1054 .Case(CMDFLAG, NAME##Model)
1055#include "clang/StaticAnalyzer/Core/Analyses.def"
1056 .Default(Value: NumConstraints);
1057 if (Value == NumConstraints) {
1058 Diags.Report(DiagID: diag::err_drv_invalid_value)
1059 << A->getAsString(Args) << Name;
1060 } else {
1061#ifndef LLVM_WITH_Z3
1062 if (Value == AnalysisConstraints::Z3ConstraintsModel) {
1063 Diags.Report(DiagID: diag::err_analyzer_not_built_with_z3);
1064 }
1065#endif // LLVM_WITH_Z3
1066 Opts.AnalysisConstraintsOpt = Value;
1067 }
1068 }
1069
1070 if (Arg *A = Args.getLastArg(Ids: OPT_analyzer_output)) {
1071 StringRef Name = A->getValue();
1072 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
1073#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
1074 .Case(CMDFLAG, PD_##NAME)
1075#include "clang/StaticAnalyzer/Core/Analyses.def"
1076 .Default(Value: NUM_ANALYSIS_DIAG_CLIENTS);
1077 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
1078 Diags.Report(DiagID: diag::err_drv_invalid_value)
1079 << A->getAsString(Args) << Name;
1080 } else {
1081 Opts.AnalysisDiagOpt = Value;
1082 }
1083 }
1084
1085 if (Arg *A = Args.getLastArg(Ids: OPT_analyzer_purge)) {
1086 StringRef Name = A->getValue();
1087 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
1088#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
1089 .Case(CMDFLAG, NAME)
1090#include "clang/StaticAnalyzer/Core/Analyses.def"
1091 .Default(Value: NumPurgeModes);
1092 if (Value == NumPurgeModes) {
1093 Diags.Report(DiagID: diag::err_drv_invalid_value)
1094 << A->getAsString(Args) << Name;
1095 } else {
1096 Opts.AnalysisPurgeOpt = Value;
1097 }
1098 }
1099
1100 if (Arg *A = Args.getLastArg(Ids: OPT_analyzer_inlining_mode)) {
1101 StringRef Name = A->getValue();
1102 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
1103#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
1104 .Case(CMDFLAG, NAME)
1105#include "clang/StaticAnalyzer/Core/Analyses.def"
1106 .Default(Value: NumInliningModes);
1107 if (Value == NumInliningModes) {
1108 Diags.Report(DiagID: diag::err_drv_invalid_value)
1109 << A->getAsString(Args) << Name;
1110 } else {
1111 Opts.InliningMode = Value;
1112 }
1113 }
1114
1115 Opts.CheckersAndPackages.clear();
1116 for (const Arg *A :
1117 Args.filtered(Ids: OPT_analyzer_checker, Ids: OPT_analyzer_disable_checker)) {
1118 A->claim();
1119 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker;
1120 // We can have a list of comma separated checker names, e.g:
1121 // '-analyzer-checker=cocoa,unix'
1122 StringRef CheckerAndPackageList = A->getValue();
1123 SmallVector<StringRef, 16> CheckersAndPackages;
1124 CheckerAndPackageList.split(A&: CheckersAndPackages, Separator: ",");
1125 for (const StringRef &CheckerOrPackage : CheckersAndPackages)
1126 Opts.CheckersAndPackages.emplace_back(args: std::string(CheckerOrPackage),
1127 args&: IsEnabled);
1128 }
1129
1130 // Go through the analyzer configuration options.
1131 for (const auto *A : Args.filtered(Ids: OPT_analyzer_config)) {
1132
1133 // We can have a list of comma separated config names, e.g:
1134 // '-analyzer-config key1=val1,key2=val2'
1135 StringRef configList = A->getValue();
1136 SmallVector<StringRef, 4> configVals;
1137 configList.split(A&: configVals, Separator: ",");
1138 for (const auto &configVal : configVals) {
1139 StringRef key, val;
1140 std::tie(args&: key, args&: val) = configVal.split(Separator: "=");
1141 if (val.empty()) {
1142 Diags.Report(Loc: SourceLocation(),
1143 DiagID: diag::err_analyzer_config_no_value) << configVal;
1144 break;
1145 }
1146 if (val.contains(C: '=')) {
1147 Diags.Report(Loc: SourceLocation(),
1148 DiagID: diag::err_analyzer_config_multiple_values)
1149 << configVal;
1150 break;
1151 }
1152
1153 // TODO: Check checker options too, possibly in CheckerRegistry.
1154 // Leave unknown non-checker configs unclaimed.
1155 if (!key.contains(Other: ":") && Opts.isUnknownAnalyzerConfig(Name: key)) {
1156 if (Opts.ShouldEmitErrorsOnInvalidConfigValue)
1157 Diags.Report(DiagID: diag::err_analyzer_config_unknown) << key;
1158 continue;
1159 }
1160
1161 A->claim();
1162 Opts.Config[key] = std::string(val);
1163 }
1164 }
1165
1166 if (Opts.ShouldEmitErrorsOnInvalidConfigValue)
1167 parseAnalyzerConfigs(AnOpts&: Opts, Diags: &Diags);
1168 else
1169 parseAnalyzerConfigs(AnOpts&: Opts, Diags: nullptr);
1170
1171 llvm::raw_string_ostream os(Opts.FullCompilerInvocation);
1172 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) {
1173 if (i != 0)
1174 os << " ";
1175 os << Args.getArgString(Index: i);
1176 }
1177
1178 return Diags.getNumErrors() == NumErrorsBefore;
1179}
1180
1181static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config,
1182 StringRef OptionName, StringRef DefaultVal) {
1183 return Config.insert(KV: {OptionName, std::string(DefaultVal)}).first->second;
1184}
1185
1186static void initOption(AnalyzerOptions::ConfigTable &Config,
1187 DiagnosticsEngine *Diags,
1188 StringRef &OptionField, StringRef Name,
1189 StringRef DefaultVal) {
1190 // String options may be known to invalid (e.g. if the expected string is a
1191 // file name, but the file does not exist), those will have to be checked in
1192 // parseConfigs.
1193 OptionField = getStringOption(Config, OptionName: Name, DefaultVal);
1194}
1195
1196static void initOption(AnalyzerOptions::ConfigTable &Config,
1197 DiagnosticsEngine *Diags,
1198 bool &OptionField, StringRef Name, bool DefaultVal) {
1199 auto PossiblyInvalidVal =
1200 llvm::StringSwitch<std::optional<bool>>(
1201 getStringOption(Config, OptionName: Name, DefaultVal: (DefaultVal ? "true" : "false")))
1202 .Case(S: "true", Value: true)
1203 .Case(S: "false", Value: false)
1204 .Default(Value: std::nullopt);
1205
1206 if (!PossiblyInvalidVal) {
1207 if (Diags)
1208 Diags->Report(DiagID: diag::err_analyzer_config_invalid_input)
1209 << Name << "a boolean";
1210 else
1211 OptionField = DefaultVal;
1212 } else
1213 OptionField = *PossiblyInvalidVal;
1214}
1215
1216static void initOption(AnalyzerOptions::ConfigTable &Config,
1217 DiagnosticsEngine *Diags,
1218 unsigned &OptionField, StringRef Name,
1219 unsigned DefaultVal) {
1220
1221 OptionField = DefaultVal;
1222 bool HasFailed = getStringOption(Config, OptionName: Name, DefaultVal: std::to_string(val: DefaultVal))
1223 .getAsInteger(Radix: 0, Result&: OptionField);
1224 if (Diags && HasFailed)
1225 Diags->Report(DiagID: diag::err_analyzer_config_invalid_input)
1226 << Name << "an unsigned";
1227}
1228
1229static void initOption(AnalyzerOptions::ConfigTable &Config,
1230 DiagnosticsEngine *Diags,
1231 PositiveAnalyzerOption &OptionField, StringRef Name,
1232 unsigned DefaultVal) {
1233 auto Parsed = PositiveAnalyzerOption::create(
1234 Str: getStringOption(Config, OptionName: Name, DefaultVal: std::to_string(val: DefaultVal)));
1235 if (Parsed.has_value()) {
1236 OptionField = Parsed.value();
1237 return;
1238 }
1239 if (Diags && !Parsed.has_value())
1240 Diags->Report(DiagID: diag::err_analyzer_config_invalid_input)
1241 << Name << "a positive";
1242
1243 OptionField = DefaultVal;
1244}
1245
1246static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
1247 DiagnosticsEngine *Diags) {
1248 // TODO: There's no need to store the entire configtable, it'd be plenty
1249 // enough to store checker options.
1250
1251#define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \
1252 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL);
1253#define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(...)
1254#include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
1255
1256 assert(AnOpts.UserMode == "shallow" || AnOpts.UserMode == "deep");
1257 const bool InShallowMode = AnOpts.UserMode == "shallow";
1258
1259#define ANALYZER_OPTION(...)
1260#define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \
1261 SHALLOW_VAL, DEEP_VAL) \
1262 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, \
1263 InShallowMode ? SHALLOW_VAL : DEEP_VAL);
1264#include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
1265
1266 // At this point, AnalyzerOptions is configured. Let's validate some options.
1267
1268 // FIXME: Here we try to validate the silenced checkers or packages are valid.
1269 // The current approach only validates the registered checkers which does not
1270 // contain the runtime enabled checkers and optimally we would validate both.
1271 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) {
1272 std::vector<StringRef> Checkers =
1273 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true);
1274 std::vector<StringRef> Packages =
1275 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true);
1276
1277 SmallVector<StringRef, 16> CheckersAndPackages;
1278 AnOpts.RawSilencedCheckersAndPackages.split(A&: CheckersAndPackages, Separator: ";");
1279
1280 for (const StringRef &CheckerOrPackage : CheckersAndPackages) {
1281 if (Diags) {
1282 bool IsChecker = CheckerOrPackage.contains(C: '.');
1283 bool IsValidName = IsChecker
1284 ? llvm::is_contained(Range&: Checkers, Element: CheckerOrPackage)
1285 : llvm::is_contained(Range&: Packages, Element: CheckerOrPackage);
1286
1287 if (!IsValidName)
1288 Diags->Report(DiagID: diag::err_unknown_analyzer_checker_or_package)
1289 << CheckerOrPackage;
1290 }
1291
1292 AnOpts.SilencedCheckersAndPackages.emplace_back(args: CheckerOrPackage);
1293 }
1294 }
1295
1296 if (!Diags)
1297 return;
1298
1299 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions)
1300 Diags->Report(DiagID: diag::err_analyzer_config_invalid_input)
1301 << "track-conditions-debug" << "'track-conditions' to also be enabled";
1302}
1303
1304/// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`.
1305static void
1306GenerateOptimizationRemark(ArgumentConsumer Consumer, OptSpecifier OptEQ,
1307 StringRef Name,
1308 const CodeGenOptions::OptRemark &Remark) {
1309 if (Remark.hasValidPattern()) {
1310 GenerateArg(Consumer, OptSpecifier: OptEQ, Value: Remark.Pattern);
1311 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) {
1312 GenerateArg(Consumer, OptSpecifier: OPT_R_Joined, Value: Name);
1313 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) {
1314 GenerateArg(Consumer, OptSpecifier: OPT_R_Joined, Value: StringRef("no-") + Name);
1315 }
1316}
1317
1318/// Parse a remark command line argument. It may be missing, disabled/enabled by
1319/// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'.
1320/// On top of that, it can be disabled/enabled globally by '-R[no-]everything'.
1321static CodeGenOptions::OptRemark
1322ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args,
1323 OptSpecifier OptEQ, StringRef Name) {
1324 CodeGenOptions::OptRemark Result;
1325
1326 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A,
1327 StringRef Pattern) {
1328 Result.Pattern = Pattern.str();
1329
1330 std::string RegexError;
1331 Result.Regex = std::make_shared<llvm::Regex>(args&: Result.Pattern);
1332 if (!Result.Regex->isValid(Error&: RegexError)) {
1333 Diags.Report(DiagID: diag::err_drv_optimization_remark_pattern)
1334 << RegexError << A->getAsString(Args);
1335 return false;
1336 }
1337
1338 return true;
1339 };
1340
1341 for (Arg *A : Args) {
1342 if (A->getOption().matches(ID: OPT_R_Joined)) {
1343 StringRef Value = A->getValue();
1344
1345 if (Value == Name)
1346 Result.Kind = CodeGenOptions::RK_Enabled;
1347 else if (Value == "everything")
1348 Result.Kind = CodeGenOptions::RK_EnabledEverything;
1349 else if (Value.split(Separator: '-') == std::make_pair(x: StringRef("no"), y&: Name))
1350 Result.Kind = CodeGenOptions::RK_Disabled;
1351 else if (Value == "no-everything")
1352 Result.Kind = CodeGenOptions::RK_DisabledEverything;
1353 else
1354 continue;
1355
1356 if (Result.Kind == CodeGenOptions::RK_Disabled ||
1357 Result.Kind == CodeGenOptions::RK_DisabledEverything) {
1358 Result.Pattern = "";
1359 Result.Regex = nullptr;
1360 } else {
1361 InitializeResultPattern(A, ".*");
1362 }
1363 } else if (A->getOption().matches(ID: OptEQ)) {
1364 Result.Kind = CodeGenOptions::RK_WithPattern;
1365 if (!InitializeResultPattern(A, A->getValue()))
1366 return CodeGenOptions::OptRemark();
1367 }
1368 }
1369
1370 return Result;
1371}
1372
1373static bool parseDiagnosticLevelMask(StringRef FlagName,
1374 const std::vector<std::string> &Levels,
1375 DiagnosticsEngine &Diags,
1376 DiagnosticLevelMask &M) {
1377 bool Success = true;
1378 for (const auto &Level : Levels) {
1379 DiagnosticLevelMask const PM =
1380 llvm::StringSwitch<DiagnosticLevelMask>(Level)
1381 .Case(S: "note", Value: DiagnosticLevelMask::Note)
1382 .Case(S: "remark", Value: DiagnosticLevelMask::Remark)
1383 .Case(S: "warning", Value: DiagnosticLevelMask::Warning)
1384 .Case(S: "error", Value: DiagnosticLevelMask::Error)
1385 .Default(Value: DiagnosticLevelMask::None);
1386 if (PM == DiagnosticLevelMask::None) {
1387 Success = false;
1388 Diags.Report(DiagID: diag::err_drv_invalid_value) << FlagName << Level;
1389 }
1390 M = M | PM;
1391 }
1392 return Success;
1393}
1394
1395static void parseSanitizerKinds(StringRef FlagName,
1396 const std::vector<std::string> &Sanitizers,
1397 DiagnosticsEngine &Diags, SanitizerSet &S) {
1398 for (const auto &Sanitizer : Sanitizers) {
1399 SanitizerMask K = parseSanitizerValue(Value: Sanitizer, /*AllowGroups=*/false);
1400 if (K == SanitizerMask())
1401 Diags.Report(DiagID: diag::err_drv_invalid_value) << FlagName << Sanitizer;
1402 else
1403 S.set(K, Value: true);
1404 }
1405}
1406
1407static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) {
1408 SmallVector<StringRef, 4> Values;
1409 serializeSanitizerSet(Set: S, Values);
1410 return Values;
1411}
1412
1413static SanitizerMaskCutoffs
1414parseSanitizerWeightedKinds(StringRef FlagName,
1415 const std::vector<std::string> &Sanitizers,
1416 DiagnosticsEngine &Diags) {
1417 SanitizerMaskCutoffs Cutoffs;
1418 for (const auto &Sanitizer : Sanitizers) {
1419 if (!parseSanitizerWeightedValue(Value: Sanitizer, /*AllowGroups=*/false, Cutoffs))
1420 Diags.Report(DiagID: diag::err_drv_invalid_value) << FlagName << Sanitizer;
1421 }
1422 return Cutoffs;
1423}
1424
1425static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle,
1426 ArgList &Args, DiagnosticsEngine &D,
1427 XRayInstrSet &S) {
1428 llvm::SmallVector<StringRef, 2> BundleParts;
1429 llvm::SplitString(Source: Bundle, OutFragments&: BundleParts, Delimiters: ",");
1430 for (const auto &B : BundleParts) {
1431 auto Mask = parseXRayInstrValue(Value: B);
1432 if (Mask == XRayInstrKind::None)
1433 if (B != "none")
1434 D.Report(DiagID: diag::err_drv_invalid_value) << FlagName << Bundle;
1435 else
1436 S.Mask = Mask;
1437 else if (Mask == XRayInstrKind::All)
1438 S.Mask = Mask;
1439 else
1440 S.set(K: Mask, Value: true);
1441 }
1442}
1443
1444static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) {
1445 llvm::SmallVector<StringRef, 2> BundleParts;
1446 serializeXRayInstrValue(Set: S, Values&: BundleParts);
1447 std::string Buffer;
1448 llvm::raw_string_ostream OS(Buffer);
1449 llvm::interleave(c: BundleParts, os&: OS, each_fn: [&OS](StringRef Part) { OS << Part; }, separator: ",");
1450 return Buffer;
1451}
1452
1453void CompilerInvocation::setDefaultPointerAuthOptions(
1454 PointerAuthOptions &Opts, const LangOptions &LangOpts,
1455 const llvm::Triple &Triple) {
1456 assert(Triple.getArch() == llvm::Triple::aarch64);
1457 if (LangOpts.PointerAuthCalls) {
1458 using Key = PointerAuthSchema::ARM8_3Key;
1459 using Discrimination = PointerAuthSchema::Discrimination;
1460 // If you change anything here, be sure to update <ptrauth.h>.
1461 Opts.FunctionPointers = PointerAuthSchema(
1462 Key::ASIA, false,
1463 LangOpts.PointerAuthFunctionTypeDiscrimination ? Discrimination::Type
1464 : Discrimination::None);
1465
1466 Opts.CXXVTablePointers = PointerAuthSchema(
1467 Key::ASDA, LangOpts.PointerAuthVTPtrAddressDiscrimination,
1468 LangOpts.PointerAuthVTPtrTypeDiscrimination ? Discrimination::Type
1469 : Discrimination::None);
1470
1471 if (LangOpts.PointerAuthTypeInfoVTPtrDiscrimination)
1472 Opts.CXXTypeInfoVTablePointer =
1473 PointerAuthSchema(Key::ASDA, true, Discrimination::Constant,
1474 StdTypeInfoVTablePointerConstantDiscrimination);
1475 else
1476 Opts.CXXTypeInfoVTablePointer =
1477 PointerAuthSchema(Key::ASDA, false, Discrimination::None);
1478
1479 if (LangOpts.PointerAuthVTTVTPtrDiscrimination)
1480 Opts.CXXVTTVTablePointers = PointerAuthSchema(
1481 Key::ASDA, LangOpts.PointerAuthVTPtrAddressDiscrimination,
1482 LangOpts.PointerAuthVTPtrTypeDiscrimination ? Discrimination::Type
1483 : Discrimination::None);
1484 else
1485 Opts.CXXVTTVTablePointers =
1486 PointerAuthSchema(Key::ASDA, false, Discrimination::None);
1487
1488 Opts.CXXVirtualFunctionPointers = Opts.CXXVirtualVariadicFunctionPointers =
1489 PointerAuthSchema(Key::ASIA, true, Discrimination::Decl);
1490 Opts.CXXMemberFunctionPointers =
1491 PointerAuthSchema(Key::ASIA, false, Discrimination::Type);
1492
1493 Opts.BlockInvocationFunctionPointers =
1494 PointerAuthSchema(Key::ASIA, true, Discrimination::None);
1495 Opts.BlockHelperFunctionPointers =
1496 PointerAuthSchema(Key::ASIA, true, Discrimination::None);
1497 Opts.BlockByrefHelperFunctionPointers =
1498 PointerAuthSchema(Key::ASIA, true, Discrimination::None);
1499 if (LangOpts.PointerAuthBlockDescriptorPointers)
1500 Opts.BlockDescriptorPointers =
1501 PointerAuthSchema(Key::ASDA, true, Discrimination::Constant,
1502 BlockDescriptorConstantDiscriminator);
1503
1504 Opts.ObjCMethodListFunctionPointers =
1505 PointerAuthSchema(Key::ASIA, true, Discrimination::None);
1506 Opts.ObjCMethodListPointer =
1507 PointerAuthSchema(Key::ASDA, true, Discrimination::Constant,
1508 MethodListPointerConstantDiscriminator);
1509 if (LangOpts.PointerAuthObjcIsa) {
1510 Opts.ObjCIsaPointers =
1511 PointerAuthSchema(Key::ASDA, true, Discrimination::Constant,
1512 IsaPointerConstantDiscriminator);
1513 Opts.ObjCSuperPointers =
1514 PointerAuthSchema(Key::ASDA, true, Discrimination::Constant,
1515 SuperPointerConstantDiscriminator);
1516 }
1517
1518 if (LangOpts.PointerAuthObjcClassROPointers)
1519 Opts.ObjCClassROPointers =
1520 PointerAuthSchema(Key::ASDA, true, Discrimination::Constant,
1521 ClassROConstantDiscriminator);
1522 }
1523 Opts.ReturnAddresses = LangOpts.PointerAuthReturns;
1524 Opts.AuthTraps = LangOpts.PointerAuthAuthTraps;
1525 Opts.IndirectGotos = LangOpts.PointerAuthIndirectGotos;
1526 Opts.AArch64JumpTableHardening = LangOpts.AArch64JumpTableHardening;
1527}
1528
1529static void parsePointerAuthOptions(PointerAuthOptions &Opts,
1530 const LangOptions &LangOpts,
1531 const llvm::Triple &Triple,
1532 DiagnosticsEngine &Diags) {
1533 if (!LangOpts.PointerAuthCalls && !LangOpts.PointerAuthReturns &&
1534 !LangOpts.PointerAuthAuthTraps && !LangOpts.PointerAuthIndirectGotos &&
1535 !LangOpts.AArch64JumpTableHardening)
1536 return;
1537
1538 CompilerInvocation::setDefaultPointerAuthOptions(Opts, LangOpts, Triple);
1539}
1540
1541void CompilerInvocationBase::GenerateCodeGenArgs(const CodeGenOptions &Opts,
1542 ArgumentConsumer Consumer,
1543 const llvm::Triple &T,
1544 const std::string &OutputFile,
1545 const LangOptions *LangOpts) {
1546 const CodeGenOptions &CodeGenOpts = Opts;
1547
1548 if (Opts.OptimizationLevel == 0)
1549 GenerateArg(Consumer, OptSpecifier: OPT_O0);
1550 else
1551 GenerateArg(Consumer, OptSpecifier: OPT_O, Value: Twine(Opts.OptimizationLevel));
1552
1553#define CODEGEN_OPTION_WITH_MARSHALLING(...) \
1554 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
1555#include "clang/Options/Options.inc"
1556#undef CODEGEN_OPTION_WITH_MARSHALLING
1557
1558 if (Opts.OptimizationLevel > 0) {
1559 if (Opts.Inlining == CodeGenOptions::NormalInlining)
1560 GenerateArg(Consumer, OptSpecifier: OPT_finline_functions);
1561 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining)
1562 GenerateArg(Consumer, OptSpecifier: OPT_finline_hint_functions);
1563 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining)
1564 GenerateArg(Consumer, OptSpecifier: OPT_fno_inline);
1565 }
1566
1567 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0)
1568 GenerateArg(Consumer, OptSpecifier: OPT_fdirect_access_external_data);
1569 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0)
1570 GenerateArg(Consumer, OptSpecifier: OPT_fno_direct_access_external_data);
1571
1572 std::optional<StringRef> DebugInfoVal;
1573 switch (Opts.DebugInfo) {
1574 case llvm::codegenoptions::DebugLineTablesOnly:
1575 DebugInfoVal = "line-tables-only";
1576 break;
1577 case llvm::codegenoptions::DebugDirectivesOnly:
1578 DebugInfoVal = "line-directives-only";
1579 break;
1580 case llvm::codegenoptions::DebugInfoConstructor:
1581 DebugInfoVal = "constructor";
1582 break;
1583 case llvm::codegenoptions::LimitedDebugInfo:
1584 DebugInfoVal = "limited";
1585 break;
1586 case llvm::codegenoptions::FullDebugInfo:
1587 DebugInfoVal = "standalone";
1588 break;
1589 case llvm::codegenoptions::UnusedTypeInfo:
1590 DebugInfoVal = "unused-types";
1591 break;
1592 case llvm::codegenoptions::NoDebugInfo: // default value
1593 DebugInfoVal = std::nullopt;
1594 break;
1595 case llvm::codegenoptions::LocTrackingOnly: // implied value
1596 DebugInfoVal = std::nullopt;
1597 break;
1598 }
1599 if (DebugInfoVal)
1600 GenerateArg(Consumer, OptSpecifier: OPT_debug_info_kind_EQ, Value: *DebugInfoVal);
1601
1602 for (const auto &Prefix : Opts.DebugPrefixMap)
1603 GenerateArg(Consumer, OptSpecifier: OPT_fdebug_prefix_map_EQ,
1604 Value: Prefix.first + "=" + Prefix.second);
1605
1606 for (const auto &Prefix : Opts.CoveragePrefixMap)
1607 GenerateArg(Consumer, OptSpecifier: OPT_fcoverage_prefix_map_EQ,
1608 Value: Prefix.first + "=" + Prefix.second);
1609
1610 if (Opts.NewStructPathTBAA)
1611 GenerateArg(Consumer, OptSpecifier: OPT_new_struct_path_tbaa);
1612
1613 if (Opts.OptimizeSize == 1)
1614 GenerateArg(Consumer, OptSpecifier: OPT_O, Value: "s");
1615 else if (Opts.OptimizeSize == 2)
1616 GenerateArg(Consumer, OptSpecifier: OPT_O, Value: "z");
1617
1618 // SimplifyLibCalls is set only in the absence of -fno-builtin and
1619 // -ffreestanding. We'll consider that when generating them.
1620
1621 // NoBuiltinFuncs are generated by LangOptions.
1622
1623 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1)
1624 GenerateArg(Consumer, OptSpecifier: OPT_funroll_loops);
1625 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1)
1626 GenerateArg(Consumer, OptSpecifier: OPT_fno_unroll_loops);
1627
1628 if (Opts.InterchangeLoops)
1629 GenerateArg(Consumer, OptSpecifier: OPT_floop_interchange);
1630 else
1631 GenerateArg(Consumer, OptSpecifier: OPT_fno_loop_interchange);
1632
1633 if (Opts.FuseLoops)
1634 GenerateArg(Consumer, OptSpecifier: OPT_fexperimental_loop_fusion);
1635
1636 if (!Opts.BinutilsVersion.empty())
1637 GenerateArg(Consumer, OptSpecifier: OPT_fbinutils_version_EQ, Value: Opts.BinutilsVersion);
1638
1639 if (Opts.DebugNameTable ==
1640 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU))
1641 GenerateArg(Consumer, OptSpecifier: OPT_ggnu_pubnames);
1642 else if (Opts.DebugNameTable ==
1643 static_cast<unsigned>(
1644 llvm::DICompileUnit::DebugNameTableKind::Default))
1645 GenerateArg(Consumer, OptSpecifier: OPT_gpubnames);
1646
1647 if (Opts.DebugTemplateAlias)
1648 GenerateArg(Consumer, OptSpecifier: OPT_gtemplate_alias);
1649
1650 auto TNK = Opts.getDebugSimpleTemplateNames();
1651 if (TNK != llvm::codegenoptions::DebugTemplateNamesKind::Full) {
1652 if (TNK == llvm::codegenoptions::DebugTemplateNamesKind::Simple)
1653 GenerateArg(Consumer, OptSpecifier: OPT_gsimple_template_names_EQ, Value: "simple");
1654 else if (TNK == llvm::codegenoptions::DebugTemplateNamesKind::Mangled)
1655 GenerateArg(Consumer, OptSpecifier: OPT_gsimple_template_names_EQ, Value: "mangled");
1656 }
1657 // ProfileInstrumentUsePath is marshalled automatically, no need to generate
1658 // it or PGOUseInstrumentor.
1659
1660 if (Opts.TimePasses) {
1661 if (Opts.TimePassesPerRun)
1662 GenerateArg(Consumer, OptSpecifier: OPT_ftime_report_EQ, Value: "per-pass-run");
1663 else
1664 GenerateArg(Consumer, OptSpecifier: OPT_ftime_report);
1665
1666 if (Opts.TimePassesJson)
1667 GenerateArg(Consumer, OptSpecifier: OPT_ftime_report_json);
1668 }
1669
1670 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO)
1671 GenerateArg(Consumer, OptSpecifier: OPT_flto_EQ, Value: "full");
1672
1673 if (Opts.PrepareForThinLTO)
1674 GenerateArg(Consumer, OptSpecifier: OPT_flto_EQ, Value: "thin");
1675
1676 if (!Opts.ThinLTOIndexFile.empty())
1677 GenerateArg(Consumer, OptSpecifier: OPT_fthinlto_index_EQ, Value: Opts.ThinLTOIndexFile);
1678
1679 if (Opts.SaveTempsFilePrefix == OutputFile)
1680 GenerateArg(Consumer, OptSpecifier: OPT_save_temps_EQ, Value: "obj");
1681
1682 if (!Opts.SaveDynDbgTempsFilePrefix.empty())
1683 GenerateArg(Consumer, OptSpecifier: OPT_save_dynamic_debugging_temps);
1684
1685 StringRef MemProfileBasename("memprof.profraw");
1686 if (!Opts.MemoryProfileOutput.empty()) {
1687 if (Opts.MemoryProfileOutput == MemProfileBasename) {
1688 GenerateArg(Consumer, OptSpecifier: OPT_fmemory_profile);
1689 } else {
1690 size_t ArgLength =
1691 Opts.MemoryProfileOutput.size() - MemProfileBasename.size();
1692 GenerateArg(Consumer, OptSpecifier: OPT_fmemory_profile_EQ,
1693 Value: Opts.MemoryProfileOutput.substr(pos: 0, n: ArgLength));
1694 }
1695 }
1696
1697 if (memcmp(s1: Opts.CoverageVersion, s2: "0000", n: 4))
1698 GenerateArg(Consumer, OptSpecifier: OPT_coverage_version_EQ,
1699 Value: StringRef(Opts.CoverageVersion, 4));
1700
1701 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely
1702 // '-fembed_bitcode', which does not map to any CompilerInvocation field and
1703 // won't be generated.)
1704
1705 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) {
1706 std::string InstrBundle =
1707 serializeXRayInstrumentationBundle(S: Opts.XRayInstrumentationBundle);
1708 if (!InstrBundle.empty())
1709 GenerateArg(Consumer, OptSpecifier: OPT_fxray_instrumentation_bundle, Value: InstrBundle);
1710 }
1711
1712 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch)
1713 GenerateArg(Consumer, OptSpecifier: OPT_fcf_protection_EQ, Value: "full");
1714 else if (Opts.CFProtectionReturn)
1715 GenerateArg(Consumer, OptSpecifier: OPT_fcf_protection_EQ, Value: "return");
1716 else if (Opts.CFProtectionBranch)
1717 GenerateArg(Consumer, OptSpecifier: OPT_fcf_protection_EQ, Value: "branch");
1718
1719 if (Opts.CFProtectionBranch) {
1720 switch (Opts.getCFBranchLabelScheme()) {
1721 case CFBranchLabelSchemeKind::Default:
1722 break;
1723#define CF_BRANCH_LABEL_SCHEME(Kind, FlagVal) \
1724 case CFBranchLabelSchemeKind::Kind: \
1725 GenerateArg(Consumer, OPT_mcf_branch_label_scheme_EQ, #FlagVal); \
1726 break;
1727#include "clang/Basic/CFProtectionOptions.def"
1728 }
1729 }
1730
1731 if (Opts.FunctionReturnThunks)
1732 GenerateArg(Consumer, OptSpecifier: OPT_mfunction_return_EQ, Value: "thunk-extern");
1733
1734 for (const auto &F : Opts.LinkBitcodeFiles) {
1735 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded &&
1736 F.PropagateAttrs && F.Internalize;
1737 GenerateArg(Consumer,
1738 OptSpecifier: Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file,
1739 Value: F.Filename);
1740 }
1741
1742 if (Opts.EmulatedTLS)
1743 GenerateArg(Consumer, OptSpecifier: OPT_femulated_tls);
1744
1745 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE())
1746 GenerateArg(Consumer, OptSpecifier: OPT_fdenormal_fp_math_EQ, Value: Opts.FPDenormalMode.str());
1747
1748 if ((Opts.FPDenormalMode != Opts.FP32DenormalMode) ||
1749 (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE()))
1750 GenerateArg(Consumer, OptSpecifier: OPT_fdenormal_fp_math_f32_EQ,
1751 Value: Opts.FP32DenormalMode.str());
1752
1753 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) {
1754 OptSpecifier Opt =
1755 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return;
1756 GenerateArg(Consumer, OptSpecifier: Opt);
1757 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) {
1758 OptSpecifier Opt =
1759 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return;
1760 GenerateArg(Consumer, OptSpecifier: Opt);
1761 }
1762
1763 if (Opts.XCOFFReadOnlyPointers)
1764 GenerateArg(Consumer, OptSpecifier: OPT_mxcoff_roptr);
1765
1766 if (!Opts.OptRecordPasses.empty())
1767 GenerateArg(Consumer, OptSpecifier: OPT_opt_record_passes, Value: Opts.OptRecordPasses);
1768
1769 if (!Opts.OptRecordFormat.empty())
1770 GenerateArg(Consumer, OptSpecifier: OPT_opt_record_format, Value: Opts.OptRecordFormat);
1771
1772 GenerateOptimizationRemark(Consumer, OptEQ: OPT_Rpass_EQ, Name: "pass",
1773 Remark: Opts.OptimizationRemark);
1774
1775 GenerateOptimizationRemark(Consumer, OptEQ: OPT_Rpass_missed_EQ, Name: "pass-missed",
1776 Remark: Opts.OptimizationRemarkMissed);
1777
1778 GenerateOptimizationRemark(Consumer, OptEQ: OPT_Rpass_analysis_EQ, Name: "pass-analysis",
1779 Remark: Opts.OptimizationRemarkAnalysis);
1780
1781 GenerateArg(Consumer, OptSpecifier: OPT_fdiagnostics_hotness_threshold_EQ,
1782 Value: Opts.DiagnosticsHotnessThreshold
1783 ? Twine(*Opts.DiagnosticsHotnessThreshold)
1784 : "auto");
1785
1786 GenerateArg(Consumer, OptSpecifier: OPT_fdiagnostics_misexpect_tolerance_EQ,
1787 Value: Twine(*Opts.DiagnosticsMisExpectTolerance));
1788
1789 for (StringRef Sanitizer : serializeSanitizerKinds(S: Opts.SanitizeRecover))
1790 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_recover_EQ, Value: Sanitizer);
1791
1792 for (StringRef Sanitizer : serializeSanitizerKinds(S: Opts.SanitizeTrap))
1793 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_trap_EQ, Value: Sanitizer);
1794
1795 for (StringRef Sanitizer :
1796 serializeSanitizerKinds(S: Opts.SanitizeMergeHandlers))
1797 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_merge_handlers_EQ, Value: Sanitizer);
1798
1799 SmallVector<std::string, 4> Values;
1800 serializeSanitizerMaskCutoffs(Cutoffs: Opts.SanitizeSkipHotCutoffs, Values);
1801 for (std::string Sanitizer : Values)
1802 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_skip_hot_cutoff_EQ, Value: Sanitizer);
1803
1804 if (Opts.AllowRuntimeCheckSkipHotCutoff) {
1805 GenerateArg(Consumer, OptSpecifier: OPT_fallow_runtime_check_skip_hot_cutoff_EQ,
1806 Value: std::to_string(val: *Opts.AllowRuntimeCheckSkipHotCutoff));
1807 }
1808
1809 for (StringRef Sanitizer :
1810 serializeSanitizerKinds(S: Opts.SanitizeAnnotateDebugInfo))
1811 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_annotate_debug_info_EQ, Value: Sanitizer);
1812
1813 if (!Opts.EmitVersionIdentMetadata)
1814 GenerateArg(Consumer, OptSpecifier: OPT_Qn);
1815
1816 switch (Opts.FiniteLoops) {
1817 case CodeGenOptions::FiniteLoopsKind::Language:
1818 break;
1819 case CodeGenOptions::FiniteLoopsKind::Always:
1820 GenerateArg(Consumer, OptSpecifier: OPT_ffinite_loops);
1821 break;
1822 case CodeGenOptions::FiniteLoopsKind::Never:
1823 GenerateArg(Consumer, OptSpecifier: OPT_fno_finite_loops);
1824 break;
1825 }
1826
1827 if (Opts.StaticClosure)
1828 GenerateArg(Consumer, OptSpecifier: OPT_static_libclosure);
1829}
1830
1831bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
1832 InputKind IK,
1833 DiagnosticsEngine &Diags,
1834 const llvm::Triple &T,
1835 const std::string &OutputFile,
1836 const LangOptions &LangOptsRef) {
1837 unsigned NumErrorsBefore = Diags.getNumErrors();
1838
1839 Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
1840
1841 // The key paths of codegen options defined in Options.td start with
1842 // "CodeGenOpts.". Let's provide the expected variable name and type.
1843 CodeGenOptions &CodeGenOpts = Opts;
1844 // Some codegen options depend on language options. Let's provide the expected
1845 // variable name and type.
1846 const LangOptions *LangOpts = &LangOptsRef;
1847
1848#define CODEGEN_OPTION_WITH_MARSHALLING(...) \
1849 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
1850#include "clang/Options/Options.inc"
1851#undef CODEGEN_OPTION_WITH_MARSHALLING
1852
1853 // At O0 we want to fully disable inlining outside of cases marked with
1854 // 'alwaysinline' that are required for correctness.
1855 if (Opts.OptimizationLevel == 0) {
1856 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining);
1857 } else if (const Arg *A = Args.getLastArg(Ids: options::OPT_finline_functions,
1858 Ids: options::OPT_finline_hint_functions,
1859 Ids: options::OPT_fno_inline_functions,
1860 Ids: options::OPT_fno_inline)) {
1861 // Explicit inlining flags can disable some or all inlining even at
1862 // optimization levels above zero.
1863 if (A->getOption().matches(ID: options::OPT_finline_functions))
1864 Opts.setInlining(CodeGenOptions::NormalInlining);
1865 else if (A->getOption().matches(ID: options::OPT_finline_hint_functions))
1866 Opts.setInlining(CodeGenOptions::OnlyHintInlining);
1867 else
1868 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining);
1869 } else {
1870 Opts.setInlining(CodeGenOptions::NormalInlining);
1871 }
1872
1873 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to
1874 // -fdirect-access-external-data.
1875 Opts.DirectAccessExternalData =
1876 Args.hasArg(Ids: OPT_fdirect_access_external_data) ||
1877 (!Args.hasArg(Ids: OPT_fno_direct_access_external_data) &&
1878 LangOpts->PICLevel == 0);
1879
1880 if (Arg *A = Args.getLastArg(Ids: OPT_debug_info_kind_EQ)) {
1881 unsigned Val =
1882 llvm::StringSwitch<unsigned>(A->getValue())
1883 .Case(S: "line-tables-only", Value: llvm::codegenoptions::DebugLineTablesOnly)
1884 .Case(S: "line-directives-only",
1885 Value: llvm::codegenoptions::DebugDirectivesOnly)
1886 .Case(S: "constructor", Value: llvm::codegenoptions::DebugInfoConstructor)
1887 .Case(S: "limited", Value: llvm::codegenoptions::LimitedDebugInfo)
1888 .Case(S: "standalone", Value: llvm::codegenoptions::FullDebugInfo)
1889 .Case(S: "unused-types", Value: llvm::codegenoptions::UnusedTypeInfo)
1890 .Default(Value: ~0U);
1891 if (Val == ~0U)
1892 Diags.Report(DiagID: diag::err_drv_invalid_value) << A->getAsString(Args)
1893 << A->getValue();
1894 else
1895 Opts.setDebugInfo(static_cast<llvm::codegenoptions::DebugInfoKind>(Val));
1896 }
1897
1898 // If -fuse-ctor-homing is set and limited debug info is already on, then use
1899 // constructor homing, and vice versa for -fno-use-ctor-homing.
1900 if (const Arg *A =
1901 Args.getLastArg(Ids: OPT_fuse_ctor_homing, Ids: OPT_fno_use_ctor_homing)) {
1902 if (A->getOption().matches(ID: OPT_fuse_ctor_homing) &&
1903 Opts.getDebugInfo() == llvm::codegenoptions::LimitedDebugInfo)
1904 Opts.setDebugInfo(llvm::codegenoptions::DebugInfoConstructor);
1905 if (A->getOption().matches(ID: OPT_fno_use_ctor_homing) &&
1906 Opts.getDebugInfo() == llvm::codegenoptions::DebugInfoConstructor)
1907 Opts.setDebugInfo(llvm::codegenoptions::LimitedDebugInfo);
1908 }
1909
1910 for (const auto &Arg : Args.getAllArgValues(Id: OPT_fdebug_prefix_map_EQ)) {
1911 auto Split = StringRef(Arg).split(Separator: '=');
1912 Opts.DebugPrefixMap.emplace_back(Args&: Split.first, Args&: Split.second);
1913 }
1914
1915 for (const auto &Arg : Args.getAllArgValues(Id: OPT_fcoverage_prefix_map_EQ)) {
1916 auto Split = StringRef(Arg).split(Separator: '=');
1917 Opts.CoveragePrefixMap.emplace_back(Args&: Split.first, Args&: Split.second);
1918 }
1919
1920 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() &&
1921 T.supportsDebugEntryValues())
1922 Opts.EmitCallSiteInfo = true;
1923
1924 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) {
1925 Diags.Report(DiagID: diag::warn_ignoring_verify_debuginfo_preserve_export)
1926 << Opts.DIBugsReportFilePath;
1927 Opts.DIBugsReportFilePath = "";
1928 }
1929
1930 Opts.NewStructPathTBAA = !Args.hasArg(Ids: OPT_no_struct_path_tbaa) &&
1931 Args.hasArg(Ids: OPT_new_struct_path_tbaa);
1932 Opts.OptimizeSize = getOptimizationLevelSize(Args);
1933 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin;
1934 if (Opts.SimplifyLibCalls)
1935 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs;
1936 Opts.UnrollLoops =
1937 Args.hasFlag(Pos: OPT_funroll_loops, Neg: OPT_fno_unroll_loops,
1938 Default: (Opts.OptimizationLevel > 1));
1939 // Match the LLVM pipeline default (PipelineTuningOptions::LoopInterchange),
1940 // which enables the pass whenever the optimization pipeline runs.
1941 Opts.InterchangeLoops =
1942 Args.hasFlag(Pos: OPT_floop_interchange, Neg: OPT_fno_loop_interchange, Default: true);
1943 Opts.FuseLoops = Args.hasFlag(Pos: OPT_fexperimental_loop_fusion,
1944 Neg: OPT_fno_experimental_loop_fusion, Default: false);
1945 Opts.BinutilsVersion =
1946 std::string(Args.getLastArgValue(Id: OPT_fbinutils_version_EQ));
1947
1948 Opts.DebugTemplateAlias = Args.hasArg(Ids: OPT_gtemplate_alias);
1949
1950 Opts.DebugNameTable = static_cast<unsigned>(
1951 Args.hasArg(Ids: OPT_ggnu_pubnames)
1952 ? llvm::DICompileUnit::DebugNameTableKind::GNU
1953 : Args.hasArg(Ids: OPT_gpubnames)
1954 ? llvm::DICompileUnit::DebugNameTableKind::Default
1955 : llvm::DICompileUnit::DebugNameTableKind::None);
1956 if (const Arg *A = Args.getLastArg(Ids: OPT_gsimple_template_names_EQ)) {
1957 StringRef Value = A->getValue();
1958 if (Value != "simple" && Value != "mangled")
1959 Diags.Report(DiagID: diag::err_drv_unsupported_option_argument)
1960 << A->getSpelling() << A->getValue();
1961 Opts.setDebugSimpleTemplateNames(
1962 StringRef(A->getValue()) == "simple"
1963 ? llvm::codegenoptions::DebugTemplateNamesKind::Simple
1964 : llvm::codegenoptions::DebugTemplateNamesKind::Mangled);
1965 }
1966
1967 if (Args.hasArg(Ids: OPT_ftime_report, Ids: OPT_ftime_report_EQ, Ids: OPT_ftime_report_json,
1968 Ids: OPT_stats_file_timers)) {
1969 Opts.TimePasses = true;
1970
1971 // -ftime-report= is only for new pass manager.
1972 if (const Arg *EQ = Args.getLastArg(Ids: OPT_ftime_report_EQ)) {
1973 StringRef Val = EQ->getValue();
1974 if (Val == "per-pass")
1975 Opts.TimePassesPerRun = false;
1976 else if (Val == "per-pass-run")
1977 Opts.TimePassesPerRun = true;
1978 else
1979 Diags.Report(DiagID: diag::err_drv_invalid_value)
1980 << EQ->getAsString(Args) << EQ->getValue();
1981 }
1982
1983 if (Args.getLastArg(Ids: OPT_ftime_report_json))
1984 Opts.TimePassesJson = true;
1985 }
1986
1987 Opts.PrepareForLTO = false;
1988 Opts.PrepareForThinLTO = false;
1989 if (Arg *A = Args.getLastArg(Ids: OPT_flto_EQ)) {
1990 Opts.PrepareForLTO = true;
1991 StringRef S = A->getValue();
1992 if (S == "thin")
1993 Opts.PrepareForThinLTO = true;
1994 else if (S != "full")
1995 Diags.Report(DiagID: diag::err_drv_invalid_value) << A->getAsString(Args) << S;
1996 if (Args.hasArg(Ids: OPT_funified_lto))
1997 Opts.PrepareForThinLTO = true;
1998 }
1999 if (Arg *A = Args.getLastArg(Ids: OPT_fthinlto_index_EQ)) {
2000 if (IK.getLanguage() != Language::LLVM_IR)
2001 Diags.Report(DiagID: diag::err_drv_argument_only_allowed_with)
2002 << A->getAsString(Args) << "-x ir";
2003 Opts.ThinLTOIndexFile =
2004 std::string(Args.getLastArgValue(Id: OPT_fthinlto_index_EQ));
2005 }
2006 if (Arg *A = Args.getLastArg(Ids: OPT_save_temps_EQ))
2007 Opts.SaveTempsFilePrefix =
2008 llvm::StringSwitch<std::string>(A->getValue())
2009 .Case(S: "obj", Value: OutputFile)
2010 .Default(Value: llvm::sys::path::filename(path: OutputFile).str());
2011
2012 if (Args.getLastArg(Ids: OPT_save_dynamic_debugging_temps))
2013 Opts.SaveDynDbgTempsFilePrefix = OutputFile;
2014
2015 // The memory profile runtime appends the pid to make this name more unique.
2016 const char *MemProfileBasename = "memprof.profraw";
2017 if (Args.hasArg(Ids: OPT_fmemory_profile_EQ)) {
2018 SmallString<128> Path(Args.getLastArgValue(Id: OPT_fmemory_profile_EQ));
2019 llvm::sys::path::append(path&: Path, a: MemProfileBasename);
2020 Opts.MemoryProfileOutput = std::string(Path);
2021 } else if (Args.hasArg(Ids: OPT_fmemory_profile))
2022 Opts.MemoryProfileOutput = MemProfileBasename;
2023
2024 if (Opts.CoverageNotesFile.size() || Opts.CoverageDataFile.size()) {
2025 if (Args.hasArg(Ids: OPT_coverage_version_EQ)) {
2026 StringRef CoverageVersion = Args.getLastArgValue(Id: OPT_coverage_version_EQ);
2027 if (CoverageVersion.size() != 4) {
2028 Diags.Report(DiagID: diag::err_drv_invalid_value)
2029 << Args.getLastArg(Ids: OPT_coverage_version_EQ)->getAsString(Args)
2030 << CoverageVersion;
2031 } else {
2032 memcpy(dest: Opts.CoverageVersion, src: CoverageVersion.data(), n: 4);
2033 }
2034 }
2035 }
2036 // FIXME: For backend options that are not yet recorded as function
2037 // attributes in the IR, keep track of them so we can embed them in a
2038 // separate data section and use them when building the bitcode.
2039 for (const auto &A : Args) {
2040 // Do not encode output and input.
2041 if (A->getOption().getID() == options::OPT_o ||
2042 A->getOption().getID() == options::OPT_INPUT ||
2043 A->getOption().getID() == options::OPT_x ||
2044 A->getOption().getID() == options::OPT_fembed_bitcode ||
2045 A->getOption().matches(ID: options::OPT_W_Group))
2046 continue;
2047 ArgStringList ASL;
2048 A->render(Args, Output&: ASL);
2049 for (const auto &arg : ASL) {
2050 StringRef ArgStr(arg);
2051 llvm::append_range(C&: Opts.CmdArgs, R&: ArgStr);
2052 // using \00 to separate each commandline options.
2053 Opts.CmdArgs.push_back(x: '\0');
2054 }
2055 }
2056
2057 auto XRayInstrBundles =
2058 Args.getAllArgValues(Id: OPT_fxray_instrumentation_bundle);
2059 if (XRayInstrBundles.empty())
2060 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All;
2061 else
2062 for (const auto &A : XRayInstrBundles)
2063 parseXRayInstrumentationBundle(FlagName: "-fxray-instrumentation-bundle=", Bundle: A, Args,
2064 D&: Diags, S&: Opts.XRayInstrumentationBundle);
2065
2066 if (const Arg *A = Args.getLastArg(Ids: OPT_fcf_protection_EQ)) {
2067 StringRef Name = A->getValue();
2068 if (Name == "full") {
2069 Opts.CFProtectionReturn = 1;
2070 Opts.CFProtectionBranch = 1;
2071 } else if (Name == "return")
2072 Opts.CFProtectionReturn = 1;
2073 else if (Name == "branch")
2074 Opts.CFProtectionBranch = 1;
2075 else if (Name != "none")
2076 Diags.Report(DiagID: diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2077 }
2078
2079 if (Opts.CFProtectionBranch && T.isRISCV()) {
2080 if (const Arg *A = Args.getLastArg(Ids: OPT_mcf_branch_label_scheme_EQ)) {
2081 const auto Scheme =
2082 llvm::StringSwitch<CFBranchLabelSchemeKind>(A->getValue())
2083#define CF_BRANCH_LABEL_SCHEME(Kind, FlagVal) \
2084 .Case(#FlagVal, CFBranchLabelSchemeKind::Kind)
2085#include "clang/Basic/CFProtectionOptions.def"
2086 .Default(Value: CFBranchLabelSchemeKind::Default);
2087 if (Scheme != CFBranchLabelSchemeKind::Default)
2088 Opts.setCFBranchLabelScheme(Scheme);
2089 else
2090 Diags.Report(DiagID: diag::err_drv_invalid_value)
2091 << A->getAsString(Args) << A->getValue();
2092 }
2093 }
2094
2095 if (const Arg *A = Args.getLastArg(Ids: OPT_mfunction_return_EQ)) {
2096 auto Val = llvm::StringSwitch<llvm::FunctionReturnThunksKind>(A->getValue())
2097 .Case(S: "keep", Value: llvm::FunctionReturnThunksKind::Keep)
2098 .Case(S: "thunk-extern", Value: llvm::FunctionReturnThunksKind::Extern)
2099 .Default(Value: llvm::FunctionReturnThunksKind::Invalid);
2100 // SystemZ might want to add support for "expolines."
2101 if (!T.isX86())
2102 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
2103 << A->getSpelling() << T.getTriple();
2104 else if (Val == llvm::FunctionReturnThunksKind::Invalid)
2105 Diags.Report(DiagID: diag::err_drv_invalid_value)
2106 << A->getAsString(Args) << A->getValue();
2107 else if (Val == llvm::FunctionReturnThunksKind::Extern &&
2108 Args.getLastArgValue(Id: OPT_mcmodel_EQ) == "large")
2109 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
2110 << A->getAsString(Args)
2111 << Args.getLastArg(Ids: OPT_mcmodel_EQ)->getAsString(Args);
2112 else
2113 Opts.FunctionReturnThunks = static_cast<unsigned>(Val);
2114 }
2115
2116 for (auto *A :
2117 Args.filtered(Ids: OPT_mlink_bitcode_file, Ids: OPT_mlink_builtin_bitcode)) {
2118 CodeGenOptions::BitcodeFileToLink F;
2119 F.Filename = A->getValue();
2120 if (A->getOption().matches(ID: OPT_mlink_builtin_bitcode)) {
2121 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
2122 // When linking CUDA bitcode, propagate function attributes so that
2123 // e.g. libdevice gets fast-math attrs if we're building with fast-math.
2124 F.PropagateAttrs = true;
2125 F.Internalize = true;
2126 }
2127 Opts.LinkBitcodeFiles.push_back(x: F);
2128 }
2129
2130 if (Arg *A = Args.getLastArg(Ids: OPT_fdenormal_fp_math_EQ)) {
2131 StringRef Val = A->getValue();
2132 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Str: Val);
2133 Opts.FP32DenormalMode = Opts.FPDenormalMode;
2134 if (!Opts.FPDenormalMode.isValid())
2135 Diags.Report(DiagID: diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2136 }
2137
2138 if (Arg *A = Args.getLastArg(Ids: OPT_fdenormal_fp_math_f32_EQ)) {
2139 StringRef Val = A->getValue();
2140 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Str: Val);
2141 if (!Opts.FP32DenormalMode.isValid())
2142 Diags.Report(DiagID: diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2143 }
2144
2145 // X86_32 has -fppc-struct-return and -freg-struct-return.
2146 // PPC32 has -maix-struct-return and -msvr4-struct-return.
2147 if (Arg *A =
2148 Args.getLastArg(Ids: OPT_fpcc_struct_return, Ids: OPT_freg_struct_return,
2149 Ids: OPT_maix_struct_return, Ids: OPT_msvr4_struct_return)) {
2150 // TODO: We might want to consider enabling these options on AIX in the
2151 // future.
2152 if (T.isOSAIX())
2153 Diags.Report(DiagID: diag::err_drv_unsupported_opt_for_target)
2154 << A->getSpelling() << T.str();
2155
2156 const Option &O = A->getOption();
2157 if (O.matches(ID: OPT_fpcc_struct_return) ||
2158 O.matches(ID: OPT_maix_struct_return)) {
2159 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
2160 } else {
2161 assert(O.matches(OPT_freg_struct_return) ||
2162 O.matches(OPT_msvr4_struct_return));
2163 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
2164 }
2165 }
2166
2167 if (Arg *A = Args.getLastArg(Ids: OPT_mxcoff_roptr)) {
2168 if (!T.isOSAIX())
2169 Diags.Report(DiagID: diag::err_drv_unsupported_opt_for_target)
2170 << A->getSpelling() << T.str();
2171
2172 // Since the storage mapping class is specified per csect,
2173 // without using data sections, it is less effective to use read-only
2174 // pointers. Using read-only pointers may cause other RO variables in the
2175 // same csect to become RW when the linker acts upon `-bforceimprw`;
2176 // therefore, we require that separate data sections
2177 // are used when `-mxcoff-roptr` is in effect. We respect the setting of
2178 // data-sections since we have not found reasons to do otherwise that
2179 // overcome the user surprise of not respecting the setting.
2180 if (!Args.hasFlag(Pos: OPT_fdata_sections, Neg: OPT_fno_data_sections, Default: false))
2181 Diags.Report(DiagID: diag::err_roptr_requires_data_sections);
2182
2183 Opts.XCOFFReadOnlyPointers = true;
2184 }
2185
2186 if (Arg *A = Args.getLastArg(Ids: OPT_mabi_EQ_quadword_atomics)) {
2187 if (!T.isOSAIX() || T.isPPC32())
2188 Diags.Report(DiagID: diag::err_drv_unsupported_opt_for_target)
2189 << A->getSpelling() << T.str();
2190 }
2191
2192 bool NeedLocTracking = false;
2193
2194 if (!Opts.OptRecordFile.empty())
2195 NeedLocTracking = true;
2196
2197 if (Arg *A = Args.getLastArg(Ids: OPT_opt_record_passes)) {
2198 Opts.OptRecordPasses = A->getValue();
2199 NeedLocTracking = true;
2200 }
2201
2202 if (Arg *A = Args.getLastArg(Ids: OPT_opt_record_format)) {
2203 Opts.OptRecordFormat = A->getValue();
2204 NeedLocTracking = true;
2205 }
2206
2207 Opts.OptimizationRemark =
2208 ParseOptimizationRemark(Diags, Args, OptEQ: OPT_Rpass_EQ, Name: "pass");
2209
2210 Opts.OptimizationRemarkMissed =
2211 ParseOptimizationRemark(Diags, Args, OptEQ: OPT_Rpass_missed_EQ, Name: "pass-missed");
2212
2213 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark(
2214 Diags, Args, OptEQ: OPT_Rpass_analysis_EQ, Name: "pass-analysis");
2215
2216 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() ||
2217 Opts.OptimizationRemarkMissed.hasValidPattern() ||
2218 Opts.OptimizationRemarkAnalysis.hasValidPattern();
2219
2220 bool UsingSampleProfile = !Opts.SampleProfileFile.empty();
2221 bool UsingProfile =
2222 UsingSampleProfile || !Opts.ProfileInstrumentUsePath.empty();
2223
2224 if (Opts.DiagnosticsWithHotness && !UsingProfile &&
2225 // An IR file will contain PGO as metadata
2226 IK.getLanguage() != Language::LLVM_IR)
2227 Diags.Report(DiagID: diag::warn_drv_diagnostics_hotness_requires_pgo)
2228 << "-fdiagnostics-show-hotness";
2229
2230 // Parse remarks hotness threshold. Valid value is either integer or 'auto'.
2231 if (auto *arg =
2232 Args.getLastArg(Ids: options::OPT_fdiagnostics_hotness_threshold_EQ)) {
2233 auto ResultOrErr =
2234 llvm::remarks::parseHotnessThresholdOption(Arg: arg->getValue());
2235
2236 if (!ResultOrErr) {
2237 Diags.Report(DiagID: diag::err_drv_invalid_diagnotics_hotness_threshold)
2238 << "-fdiagnostics-hotness-threshold=";
2239 } else {
2240 Opts.DiagnosticsHotnessThreshold = *ResultOrErr;
2241 if ((!Opts.DiagnosticsHotnessThreshold ||
2242 *Opts.DiagnosticsHotnessThreshold > 0) &&
2243 !UsingProfile)
2244 Diags.Report(DiagID: diag::warn_drv_diagnostics_hotness_requires_pgo)
2245 << "-fdiagnostics-hotness-threshold=";
2246 }
2247 }
2248
2249 if (auto *arg =
2250 Args.getLastArg(Ids: options::OPT_fdiagnostics_misexpect_tolerance_EQ)) {
2251 auto ResultOrErr = parseToleranceOption(Arg: arg->getValue());
2252
2253 if (!ResultOrErr) {
2254 Diags.Report(DiagID: diag::err_drv_invalid_diagnotics_misexpect_tolerance)
2255 << "-fdiagnostics-misexpect-tolerance=";
2256 } else {
2257 Opts.DiagnosticsMisExpectTolerance = *ResultOrErr;
2258 if ((!Opts.DiagnosticsMisExpectTolerance ||
2259 *Opts.DiagnosticsMisExpectTolerance > 0) &&
2260 !UsingProfile)
2261 Diags.Report(DiagID: diag::warn_drv_diagnostics_misexpect_requires_pgo)
2262 << "-fdiagnostics-misexpect-tolerance=";
2263 }
2264 }
2265
2266 // If the user requested to use a sample profile for PGO, then the
2267 // backend will need to track source location information so the profile
2268 // can be incorporated into the IR.
2269 if (UsingSampleProfile)
2270 NeedLocTracking = true;
2271
2272 if (!Opts.StackUsageFile.empty())
2273 NeedLocTracking = true;
2274
2275 // If the user requested a flag that requires source locations available in
2276 // the backend, make sure that the backend tracks source location information.
2277 if (NeedLocTracking &&
2278 Opts.getDebugInfo() == llvm::codegenoptions::NoDebugInfo)
2279 Opts.setDebugInfo(llvm::codegenoptions::LocTrackingOnly);
2280
2281 // Parse -fsanitize-recover= arguments.
2282 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
2283 parseSanitizerKinds(FlagName: "-fsanitize-recover=",
2284 Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_recover_EQ), Diags,
2285 S&: Opts.SanitizeRecover);
2286 parseSanitizerKinds(FlagName: "-fsanitize-trap=",
2287 Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_trap_EQ), Diags,
2288 S&: Opts.SanitizeTrap);
2289 parseSanitizerKinds(FlagName: "-fsanitize-merge=",
2290 Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_merge_handlers_EQ),
2291 Diags, S&: Opts.SanitizeMergeHandlers);
2292
2293 // Parse -fsanitize-skip-hot-cutoff= arguments.
2294 Opts.SanitizeSkipHotCutoffs = parseSanitizerWeightedKinds(
2295 FlagName: "-fsanitize-skip-hot-cutoff=",
2296 Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_skip_hot_cutoff_EQ), Diags);
2297
2298 parseSanitizerKinds(
2299 FlagName: "-fsanitize-annotate-debug-info=",
2300 Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_annotate_debug_info_EQ), Diags,
2301 S&: Opts.SanitizeAnnotateDebugInfo);
2302
2303 if (StringRef V =
2304 Args.getLastArgValue(Id: OPT_fallow_runtime_check_skip_hot_cutoff_EQ);
2305 !V.empty()) {
2306 double A;
2307 if (V.getAsDouble(Result&: A) || A < 0.0 || A > 1.0) {
2308 Diags.Report(DiagID: diag::err_drv_invalid_value)
2309 << "-fallow-runtime-check-skip-hot-cutoff=" << V;
2310 } else {
2311 Opts.AllowRuntimeCheckSkipHotCutoff = A;
2312 }
2313 }
2314
2315 Opts.EmitVersionIdentMetadata = Args.hasFlag(Pos: OPT_Qy, Neg: OPT_Qn, Default: true);
2316
2317 if (!LangOpts->CUDAIsDevice)
2318 parsePointerAuthOptions(Opts&: Opts.PointerAuth, LangOpts: *LangOpts, Triple: T, Diags);
2319
2320 if (Args.hasArg(Ids: options::OPT_ffinite_loops))
2321 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always;
2322 else if (Args.hasArg(Ids: options::OPT_fno_finite_loops))
2323 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never;
2324
2325 Opts.EmitIEEENaNCompliantInsts = Args.hasFlag(
2326 Pos: options::OPT_mamdgpu_ieee, Neg: options::OPT_mno_amdgpu_ieee, Default: true);
2327 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs)
2328 Diags.Report(DiagID: diag::err_drv_amdgpu_ieee_without_no_honor_nans);
2329
2330 Opts.StaticClosure = Args.hasArg(Ids: options::OPT_static_libclosure);
2331
2332 if (!Opts.HLSLRecordCommandLine.empty()) {
2333 auto ParsedArgs =
2334 clang::parseEscapedCommandLine(CommandLine: Opts.HLSLRecordCommandLine.c_str());
2335 if (!ParsedArgs)
2336 Diags.Report(DiagID: diag::err_drv_invalid_escaped_command_line)
2337 << llvm::toString(E: ParsedArgs.takeError());
2338 else
2339 Opts.HLSLParsedCommandLine = std::move(*ParsedArgs);
2340 }
2341
2342 return Diags.getNumErrors() == NumErrorsBefore;
2343}
2344
2345static void GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts,
2346 ArgumentConsumer Consumer) {
2347 const DependencyOutputOptions &DependencyOutputOpts = Opts;
2348#define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING(...) \
2349 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
2350#include "clang/Options/Options.inc"
2351#undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING
2352
2353 if (Opts.ShowIncludesDest != ShowIncludesDestination::None)
2354 GenerateArg(Consumer, OptSpecifier: OPT_show_includes);
2355
2356 for (const auto &Dep : Opts.ExtraDeps) {
2357 switch (Dep.second) {
2358 case EDK_SanitizeIgnorelist:
2359 // Sanitizer ignorelist arguments are generated from LanguageOptions.
2360 continue;
2361 case EDK_ModuleFile:
2362 // Module file arguments are generated from FrontendOptions and
2363 // HeaderSearchOptions.
2364 continue;
2365 case EDK_ProfileList:
2366 // Profile list arguments are generated from LanguageOptions via the
2367 // marshalling infrastructure.
2368 continue;
2369 case EDK_DepFileEntry:
2370 GenerateArg(Consumer, OptSpecifier: OPT_fdepfile_entry, Value: Dep.first);
2371 break;
2372 }
2373 }
2374}
2375
2376static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
2377 ArgList &Args, DiagnosticsEngine &Diags,
2378 frontend::ActionKind Action,
2379 bool ShowLineMarkers) {
2380 unsigned NumErrorsBefore = Diags.getNumErrors();
2381
2382 DependencyOutputOptions &DependencyOutputOpts = Opts;
2383#define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING(...) \
2384 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
2385#include "clang/Options/Options.inc"
2386#undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING
2387
2388 if (Args.hasArg(Ids: OPT_show_includes)) {
2389 // Writing both /showIncludes and preprocessor output to stdout
2390 // would produce interleaved output, so use stderr for /showIncludes.
2391 // This behaves the same as cl.exe, when /E, /EP or /P are passed.
2392 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers)
2393 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr;
2394 else
2395 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout;
2396 } else {
2397 Opts.ShowIncludesDest = ShowIncludesDestination::None;
2398 }
2399
2400 // Add sanitizer ignorelists as extra dependencies.
2401 // They won't be discovered by the regular preprocessor, so
2402 // we let make / ninja to know about this implicit dependency.
2403 if (!Args.hasArg(Ids: OPT_fno_sanitize_ignorelist)) {
2404 for (const auto *A : Args.filtered(Ids: OPT_fsanitize_ignorelist_EQ)) {
2405 StringRef Val = A->getValue();
2406 if (!Val.contains(C: '='))
2407 Opts.ExtraDeps.emplace_back(args: std::string(Val), args: EDK_SanitizeIgnorelist);
2408 }
2409 if (Opts.IncludeSystemHeaders) {
2410 for (const auto *A : Args.filtered(Ids: OPT_fsanitize_system_ignorelist_EQ)) {
2411 StringRef Val = A->getValue();
2412 if (!Val.contains(C: '='))
2413 Opts.ExtraDeps.emplace_back(args: std::string(Val), args: EDK_SanitizeIgnorelist);
2414 }
2415 }
2416 }
2417
2418 // -fprofile-list= dependencies.
2419 for (const auto &Filename : Args.getAllArgValues(Id: OPT_fprofile_list_EQ))
2420 Opts.ExtraDeps.emplace_back(args: Filename, args: EDK_ProfileList);
2421
2422 // Propagate the extra dependencies.
2423 for (const auto *A : Args.filtered(Ids: OPT_fdepfile_entry))
2424 Opts.ExtraDeps.emplace_back(args: A->getValue(), args: EDK_DepFileEntry);
2425
2426 // Only the -fmodule-file=<file> form.
2427 for (const auto *A : Args.filtered(Ids: OPT_fmodule_file)) {
2428 StringRef Val = A->getValue();
2429 if (!Val.contains(C: '='))
2430 Opts.ExtraDeps.emplace_back(args: std::string(Val), args: EDK_ModuleFile);
2431 }
2432
2433 // Check for invalid combinations of header-include-format
2434 // and header-include-filtering.
2435 if (Opts.HeaderIncludeFormat == HIFMT_Textual &&
2436 Opts.HeaderIncludeFiltering != HIFIL_None) {
2437 if (Args.hasArg(Ids: OPT_header_include_format_EQ))
2438 Diags.Report(DiagID: diag::err_drv_print_header_cc1_invalid_combination)
2439 << headerIncludeFormatKindToString(K: Opts.HeaderIncludeFormat)
2440 << headerIncludeFilteringKindToString(K: Opts.HeaderIncludeFiltering);
2441 else
2442 Diags.Report(DiagID: diag::err_drv_print_header_cc1_invalid_filtering)
2443 << headerIncludeFilteringKindToString(K: Opts.HeaderIncludeFiltering);
2444 } else if (Opts.HeaderIncludeFormat == HIFMT_JSON &&
2445 Opts.HeaderIncludeFiltering == HIFIL_None) {
2446 if (Args.hasArg(Ids: OPT_header_include_filtering_EQ))
2447 Diags.Report(DiagID: diag::err_drv_print_header_cc1_invalid_combination)
2448 << headerIncludeFormatKindToString(K: Opts.HeaderIncludeFormat)
2449 << headerIncludeFilteringKindToString(K: Opts.HeaderIncludeFiltering);
2450 else
2451 Diags.Report(DiagID: diag::err_drv_print_header_cc1_invalid_format)
2452 << headerIncludeFormatKindToString(K: Opts.HeaderIncludeFormat);
2453 }
2454
2455 return Diags.getNumErrors() == NumErrorsBefore;
2456}
2457
2458static ShowColorsKind parseShowColorsMode(const ArgList &Args,
2459 bool DefaultColor) {
2460 // Color diagnostics default to auto ("on" if terminal supports) in the driver
2461 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
2462 // Support both clang's -f[no-]color-diagnostics and gcc's
2463 // -f[no-]diagnostics-colors[=never|always|auto].
2464 ShowColorsKind Mode =
2465 DefaultColor ? ShowColorsKind::Auto : ShowColorsKind::Off;
2466 for (auto *A : Args) {
2467 const Option &O = A->getOption();
2468 if (O.matches(ID: options::OPT_fcolor_diagnostics)) {
2469 Mode = ShowColorsKind::On;
2470 } else if (O.matches(ID: options::OPT_fno_color_diagnostics)) {
2471 Mode = ShowColorsKind::Off;
2472 } else if (O.matches(ID: options::OPT_fdiagnostics_color_EQ)) {
2473 StringRef Value(A->getValue());
2474 if (Value == "always")
2475 Mode = ShowColorsKind::On;
2476 else if (Value == "never")
2477 Mode = ShowColorsKind::Off;
2478 else if (Value == "auto")
2479 Mode = ShowColorsKind::Auto;
2480 }
2481 }
2482 return Mode;
2483}
2484
2485static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes,
2486 DiagnosticsEngine &Diags) {
2487 bool Success = true;
2488 for (const auto &Prefix : VerifyPrefixes) {
2489 // Every prefix must start with a letter and contain only alphanumeric
2490 // characters, hyphens, and underscores.
2491 auto BadChar = llvm::find_if(Range: Prefix, P: [](char C) {
2492 return !isAlphanumeric(c: C) && C != '-' && C != '_';
2493 });
2494 if (BadChar != Prefix.end() || !isLetter(c: Prefix[0])) {
2495 Success = false;
2496 Diags.Report(DiagID: diag::err_drv_invalid_value) << "-verify=" << Prefix;
2497 Diags.Report(DiagID: diag::note_drv_verify_prefix_spelling);
2498 }
2499 }
2500 return Success;
2501}
2502
2503static void GenerateFileSystemArgs(const FileSystemOptions &Opts,
2504 ArgumentConsumer Consumer) {
2505 const FileSystemOptions &FileSystemOpts = Opts;
2506
2507#define FILE_SYSTEM_OPTION_WITH_MARSHALLING(...) \
2508 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
2509#include "clang/Options/Options.inc"
2510#undef FILE_SYSTEM_OPTION_WITH_MARSHALLING
2511}
2512
2513static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args,
2514 DiagnosticsEngine &Diags) {
2515 unsigned NumErrorsBefore = Diags.getNumErrors();
2516
2517 FileSystemOptions &FileSystemOpts = Opts;
2518
2519#define FILE_SYSTEM_OPTION_WITH_MARSHALLING(...) \
2520 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
2521#include "clang/Options/Options.inc"
2522#undef FILE_SYSTEM_OPTION_WITH_MARSHALLING
2523
2524 return Diags.getNumErrors() == NumErrorsBefore;
2525}
2526
2527static void GenerateMigratorArgs(const MigratorOptions &Opts,
2528 ArgumentConsumer Consumer) {
2529 const MigratorOptions &MigratorOpts = Opts;
2530#define MIGRATOR_OPTION_WITH_MARSHALLING(...) \
2531 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
2532#include "clang/Options/Options.inc"
2533#undef MIGRATOR_OPTION_WITH_MARSHALLING
2534}
2535
2536static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args,
2537 DiagnosticsEngine &Diags) {
2538 unsigned NumErrorsBefore = Diags.getNumErrors();
2539
2540 MigratorOptions &MigratorOpts = Opts;
2541
2542#define MIGRATOR_OPTION_WITH_MARSHALLING(...) \
2543 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
2544#include "clang/Options/Options.inc"
2545#undef MIGRATOR_OPTION_WITH_MARSHALLING
2546
2547 return Diags.getNumErrors() == NumErrorsBefore;
2548}
2549
2550void CompilerInvocationBase::GenerateDiagnosticArgs(
2551 const DiagnosticOptions &Opts, ArgumentConsumer Consumer,
2552 bool DefaultDiagColor) {
2553 const DiagnosticOptions *DiagnosticOpts = &Opts;
2554#define DIAG_OPTION_WITH_MARSHALLING(...) \
2555 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
2556#include "clang/Options/Options.inc"
2557#undef DIAG_OPTION_WITH_MARSHALLING
2558
2559 if (!Opts.DiagnosticSerializationFile.empty())
2560 GenerateArg(Consumer, OptSpecifier: OPT_diagnostic_serialized_file,
2561 Value: Opts.DiagnosticSerializationFile);
2562
2563 switch (Opts.getShowColors()) {
2564 case ShowColorsKind::On:
2565 GenerateArg(Consumer, OptSpecifier: OPT_fcolor_diagnostics);
2566 break;
2567 case ShowColorsKind::Off:
2568 GenerateArg(Consumer, OptSpecifier: OPT_fno_color_diagnostics);
2569 break;
2570 case ShowColorsKind::Auto:
2571 break;
2572 }
2573
2574 if (Opts.VerifyDiagnostics &&
2575 llvm::is_contained(Range: Opts.VerifyPrefixes, Element: "expected"))
2576 GenerateArg(Consumer, OptSpecifier: OPT_verify);
2577
2578 for (const auto &Prefix : Opts.VerifyPrefixes)
2579 if (Prefix != "expected")
2580 GenerateArg(Consumer, OptSpecifier: OPT_verify_EQ, Value: Prefix);
2581
2582 if (Opts.VerifyDirectives) {
2583 GenerateArg(Consumer, OptSpecifier: OPT_verify_directives);
2584 }
2585
2586 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected();
2587 if (VIU == DiagnosticLevelMask::None) {
2588 // This is the default, don't generate anything.
2589 } else if (VIU == DiagnosticLevelMask::All) {
2590 GenerateArg(Consumer, OptSpecifier: OPT_verify_ignore_unexpected);
2591 } else {
2592 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0)
2593 GenerateArg(Consumer, OptSpecifier: OPT_verify_ignore_unexpected_EQ, Value: "note");
2594 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0)
2595 GenerateArg(Consumer, OptSpecifier: OPT_verify_ignore_unexpected_EQ, Value: "remark");
2596 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0)
2597 GenerateArg(Consumer, OptSpecifier: OPT_verify_ignore_unexpected_EQ, Value: "warning");
2598 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0)
2599 GenerateArg(Consumer, OptSpecifier: OPT_verify_ignore_unexpected_EQ, Value: "error");
2600 }
2601
2602 for (const auto &Warning : Opts.Warnings) {
2603 // This option is automatically generated from UndefPrefixes.
2604 if (Warning == "undef-prefix")
2605 continue;
2606 // This option is automatically generated from CheckConstexprFunctionBodies.
2607 if (Warning == "invalid-constexpr" || Warning == "no-invalid-constexpr")
2608 continue;
2609 Consumer(StringRef("-W") + Warning);
2610 }
2611
2612 for (const auto &Remark : Opts.Remarks) {
2613 // These arguments are generated from OptimizationRemark fields of
2614 // CodeGenOptions.
2615 StringRef IgnoredRemarks[] = {"pass", "no-pass",
2616 "pass-analysis", "no-pass-analysis",
2617 "pass-missed", "no-pass-missed"};
2618 if (llvm::is_contained(Range&: IgnoredRemarks, Element: Remark))
2619 continue;
2620
2621 Consumer(StringRef("-R") + Remark);
2622 }
2623
2624 if (!Opts.DiagnosticSuppressionMappingsFile.empty()) {
2625 GenerateArg(Consumer, OptSpecifier: OPT_warning_suppression_mappings_EQ,
2626 Value: Opts.DiagnosticSuppressionMappingsFile);
2627 }
2628}
2629
2630std::unique_ptr<DiagnosticOptions>
2631clang::CreateAndPopulateDiagOpts(ArrayRef<const char *> Argv) {
2632 auto DiagOpts = std::make_unique<DiagnosticOptions>();
2633 unsigned MissingArgIndex, MissingArgCount;
2634 InputArgList Args = getDriverOptTable().ParseArgs(
2635 Args: Argv.slice(N: 1), MissingArgIndex, MissingArgCount);
2636
2637 bool ShowColors = true;
2638 if (std::optional<std::string> NoColor =
2639 llvm::sys::Process::GetEnv(name: "NO_COLOR");
2640 NoColor && !NoColor->empty()) {
2641 // If the user set the NO_COLOR environment variable, we'll honor that
2642 // unless the command line overrides it.
2643 ShowColors = false;
2644 }
2645
2646 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs.
2647 // Any errors that would be diagnosed here will also be diagnosed later,
2648 // when the DiagnosticsEngine actually exists.
2649 (void)ParseDiagnosticArgs(Opts&: *DiagOpts, Args, /*Diags=*/nullptr, DefaultDiagColor: ShowColors);
2650 return DiagOpts;
2651}
2652
2653bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
2654 DiagnosticsEngine *Diags,
2655 bool DefaultDiagColor) {
2656 std::optional<DiagnosticOptions> IgnoringDiagOpts;
2657 std::optional<DiagnosticsEngine> IgnoringDiags;
2658 if (!Diags) {
2659 IgnoringDiagOpts.emplace();
2660 IgnoringDiags.emplace(args: DiagnosticIDs::create(), args&: *IgnoringDiagOpts,
2661 args: new IgnoringDiagConsumer());
2662 Diags = &*IgnoringDiags;
2663 }
2664
2665 unsigned NumErrorsBefore = Diags->getNumErrors();
2666
2667 // The key paths of diagnostic options defined in Options.td start with
2668 // "DiagnosticOpts->". Let's provide the expected variable name and type.
2669 DiagnosticOptions *DiagnosticOpts = &Opts;
2670
2671#define DIAG_OPTION_WITH_MARSHALLING(...) \
2672 PARSE_OPTION_WITH_MARSHALLING(Args, *Diags, __VA_ARGS__)
2673#include "clang/Options/Options.inc"
2674#undef DIAG_OPTION_WITH_MARSHALLING
2675
2676 llvm::sys::Process::UseANSIEscapeCodes(enable: Opts.UseANSIEscapeCodes);
2677
2678 if (Arg *A =
2679 Args.getLastArg(Ids: OPT_diagnostic_serialized_file, Ids: OPT__serialize_diags))
2680 Opts.DiagnosticSerializationFile = A->getValue();
2681 Opts.setShowColors(parseShowColorsMode(Args, DefaultColor: DefaultDiagColor));
2682
2683 Opts.VerifyDiagnostics = Args.hasArg(Ids: OPT_verify) || Args.hasArg(Ids: OPT_verify_EQ);
2684 Opts.VerifyDirectives = Args.hasArg(Ids: OPT_verify_directives);
2685 Opts.VerifyPrefixes = Args.getAllArgValues(Id: OPT_verify_EQ);
2686 if (Args.hasArg(Ids: OPT_verify))
2687 Opts.VerifyPrefixes.push_back(x: "expected");
2688 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and
2689 // then sort it to prepare for fast lookup using std::binary_search.
2690 if (!checkVerifyPrefixes(VerifyPrefixes: Opts.VerifyPrefixes, Diags&: *Diags))
2691 Opts.VerifyDiagnostics = false;
2692 else
2693 llvm::sort(C&: Opts.VerifyPrefixes);
2694 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
2695 parseDiagnosticLevelMask(
2696 FlagName: "-verify-ignore-unexpected=",
2697 Levels: Args.getAllArgValues(Id: OPT_verify_ignore_unexpected_EQ), Diags&: *Diags, M&: DiagMask);
2698 if (Args.hasArg(Ids: OPT_verify_ignore_unexpected))
2699 DiagMask = DiagnosticLevelMask::All;
2700 Opts.setVerifyIgnoreUnexpected(DiagMask);
2701 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
2702 Diags->Report(DiagID: diag::warn_ignoring_ftabstop_value)
2703 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
2704 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
2705 }
2706
2707 if (const Arg *A = Args.getLastArg(Ids: OPT_warning_suppression_mappings_EQ))
2708 Opts.DiagnosticSuppressionMappingsFile = A->getValue();
2709
2710 addDiagnosticArgs(Args, Group: OPT_W_Group, GroupWithValue: OPT_W_value_Group, Diagnostics&: Opts.Warnings);
2711 addDiagnosticArgs(Args, Group: OPT_R_Group, GroupWithValue: OPT_R_value_Group, Diagnostics&: Opts.Remarks);
2712
2713 return Diags->getNumErrors() == NumErrorsBefore;
2714}
2715
2716unsigned clang::getOptimizationLevel(const ArgList &Args, InputKind IK,
2717 DiagnosticsEngine &Diags) {
2718 unsigned DefaultOpt = 0;
2719 if ((IK.getLanguage() == Language::OpenCL ||
2720 IK.getLanguage() == Language::OpenCLCXX) &&
2721 !Args.hasArg(Ids: OPT_cl_opt_disable))
2722 DefaultOpt = 2;
2723
2724 if (Arg *A = Args.getLastArg(Ids: options::OPT_O_Group)) {
2725 if (A->getOption().matches(ID: options::OPT_O0))
2726 return 0;
2727
2728 if (A->getOption().matches(ID: options::OPT_Ofast) ||
2729 A->getOption().matches(ID: options::OPT_O4))
2730 return 3;
2731
2732 assert(A->getOption().matches(options::OPT_O));
2733
2734 StringRef S(A->getValue());
2735 if (S == "s" || S == "z")
2736 return 2;
2737
2738 if (S == "g")
2739 return 1;
2740
2741 DefaultOpt = getLastArgIntValue(Args, Id: OPT_O, Default: DefaultOpt, Diags);
2742 }
2743
2744 unsigned MaxOptLevel = 3;
2745 if (DefaultOpt > MaxOptLevel) {
2746 // If the optimization level is not supported, fall back on the default
2747 // optimization
2748 Diags.Report(DiagID: diag::warn_drv_optimization_value)
2749 << Args.getLastArg(Ids: OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
2750 DefaultOpt = MaxOptLevel;
2751 }
2752
2753 return DefaultOpt;
2754}
2755
2756unsigned clang::getOptimizationLevelSize(const ArgList &Args) {
2757 if (Arg *A = Args.getLastArg(Ids: options::OPT_O_Group)) {
2758 if (A->getOption().matches(ID: options::OPT_O)) {
2759 switch (A->getValue()[0]) {
2760 default:
2761 return 0;
2762 case 's':
2763 return 1;
2764 case 'z':
2765 return 2;
2766 }
2767 }
2768 }
2769 return 0;
2770}
2771
2772/// Parse the argument to the -ftest-module-file-extension
2773/// command-line argument.
2774///
2775/// \returns true on error, false on success.
2776static bool parseTestModuleFileExtensionArg(StringRef Arg,
2777 std::string &BlockName,
2778 unsigned &MajorVersion,
2779 unsigned &MinorVersion,
2780 bool &Hashed,
2781 std::string &UserInfo) {
2782 SmallVector<StringRef, 5> Args;
2783 Arg.split(A&: Args, Separator: ':', MaxSplit: 5);
2784 if (Args.size() < 5)
2785 return true;
2786
2787 BlockName = std::string(Args[0]);
2788 if (Args[1].getAsInteger(Radix: 10, Result&: MajorVersion)) return true;
2789 if (Args[2].getAsInteger(Radix: 10, Result&: MinorVersion)) return true;
2790 if (Args[3].getAsInteger(Radix: 2, Result&: Hashed)) return true;
2791 if (Args.size() > 4)
2792 UserInfo = std::string(Args[4]);
2793 return false;
2794}
2795
2796/// Return a table that associates command line option specifiers with the
2797/// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is
2798/// intentionally missing, as this case is handled separately from other
2799/// frontend options.
2800static const auto &getFrontendActionTable() {
2801 static const std::pair<frontend::ActionKind, unsigned> Table[] = {
2802 {frontend::ASTDeclList, OPT_ast_list},
2803
2804 {frontend::ASTDump, OPT_ast_dump_all_EQ},
2805 {frontend::ASTDump, OPT_ast_dump_all},
2806 {frontend::ASTDump, OPT_ast_dump_EQ},
2807 {frontend::ASTDump, OPT_ast_dump},
2808 {frontend::ASTDump, OPT_ast_dump_lookups},
2809 {frontend::ASTDump, OPT_ast_dump_decl_types},
2810
2811 {frontend::ASTPrint, OPT_ast_print},
2812 {frontend::ASTView, OPT_ast_view},
2813 {frontend::DumpCompilerOptions, OPT_compiler_options_dump},
2814 {frontend::DumpRawTokens, OPT_dump_raw_tokens},
2815 {frontend::DumpTokens, OPT_dump_tokens},
2816 {frontend::EmitAssembly, OPT_S},
2817 {frontend::EmitBC, OPT_emit_llvm_bc},
2818 {frontend::EmitCIR, OPT_emit_cir},
2819 {frontend::EmitHTML, OPT_emit_html},
2820 {frontend::EmitLLVM, OPT_emit_llvm},
2821 {frontend::EmitLLVMOnly, OPT_emit_llvm_only},
2822 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only},
2823 {frontend::EmitObj, OPT_emit_obj},
2824 {frontend::ExtractAPI, OPT_extract_api},
2825
2826 {frontend::FixIt, OPT_fixit_EQ},
2827 {frontend::FixIt, OPT_fixit},
2828
2829 {frontend::GenerateModule, OPT_emit_module},
2830 {frontend::GenerateModuleInterface, OPT_emit_module_interface},
2831 {frontend::GenerateReducedModuleInterface,
2832 OPT_emit_reduced_module_interface},
2833 {frontend::GenerateHeaderUnit, OPT_emit_header_unit},
2834 {frontend::GeneratePCH, OPT_emit_pch},
2835 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs},
2836 {frontend::InitOnly, OPT_init_only},
2837 {frontend::ParseSyntaxOnly, OPT_fsyntax_only},
2838 {frontend::ModuleFileInfo, OPT_module_file_info},
2839 {frontend::VerifyPCH, OPT_verify_pch},
2840 {frontend::PrintPreamble, OPT_print_preamble},
2841 {frontend::PrintPreprocessedInput, OPT_E},
2842 {frontend::RewriteMacros, OPT_rewrite_macros},
2843 {frontend::RewriteObjC, OPT_rewrite_objc},
2844 {frontend::RewriteTest, OPT_rewrite_test},
2845 {frontend::RunAnalysis, OPT_analyze},
2846 {frontend::RunPreprocessorOnly, OPT_Eonly},
2847 {frontend::PrintDependencyDirectivesSourceMinimizerOutput,
2848 OPT_print_dependency_directives_minimized_source},
2849 };
2850
2851 return Table;
2852}
2853
2854/// Maps command line option to frontend action.
2855static std::optional<frontend::ActionKind>
2856getFrontendAction(OptSpecifier &Opt) {
2857 for (const auto &ActionOpt : getFrontendActionTable())
2858 if (ActionOpt.second == Opt.getID())
2859 return ActionOpt.first;
2860
2861 return std::nullopt;
2862}
2863
2864/// Maps frontend action to command line option.
2865static std::optional<OptSpecifier>
2866getProgramActionOpt(frontend::ActionKind ProgramAction) {
2867 for (const auto &ActionOpt : getFrontendActionTable())
2868 if (ActionOpt.first == ProgramAction)
2869 return OptSpecifier(ActionOpt.second);
2870
2871 return std::nullopt;
2872}
2873
2874static void GenerateFrontendArgs(const FrontendOptions &Opts,
2875 ArgumentConsumer Consumer, bool IsHeader) {
2876 const FrontendOptions &FrontendOpts = Opts;
2877#define FRONTEND_OPTION_WITH_MARSHALLING(...) \
2878 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
2879#include "clang/Options/Options.inc"
2880#undef FRONTEND_OPTION_WITH_MARSHALLING
2881
2882 std::optional<OptSpecifier> ProgramActionOpt =
2883 getProgramActionOpt(ProgramAction: Opts.ProgramAction);
2884
2885 // Generating a simple flag covers most frontend actions.
2886 std::function<void()> GenerateProgramAction = [&]() {
2887 GenerateArg(Consumer, OptSpecifier: *ProgramActionOpt);
2888 };
2889
2890 if (!ProgramActionOpt) {
2891 // PluginAction is the only program action handled separately.
2892 assert(Opts.ProgramAction == frontend::PluginAction &&
2893 "Frontend action without option.");
2894 GenerateProgramAction = [&]() {
2895 GenerateArg(Consumer, OptSpecifier: OPT_plugin, Value: Opts.ActionName);
2896 };
2897 }
2898
2899 // FIXME: Simplify the complex 'AST dump' command line.
2900 if (Opts.ProgramAction == frontend::ASTDump) {
2901 GenerateProgramAction = [&]() {
2902 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via
2903 // marshalling infrastructure.
2904
2905 if (Opts.ASTDumpFormat != ADOF_Default) {
2906 StringRef Format;
2907 switch (Opts.ASTDumpFormat) {
2908 case ADOF_Default:
2909 llvm_unreachable("Default AST dump format.");
2910 case ADOF_JSON:
2911 Format = "json";
2912 break;
2913 }
2914
2915 if (Opts.ASTDumpAll)
2916 GenerateArg(Consumer, OptSpecifier: OPT_ast_dump_all_EQ, Value: Format);
2917 if (Opts.ASTDumpDecls)
2918 GenerateArg(Consumer, OptSpecifier: OPT_ast_dump_EQ, Value: Format);
2919 } else {
2920 if (Opts.ASTDumpAll)
2921 GenerateArg(Consumer, OptSpecifier: OPT_ast_dump_all);
2922 if (Opts.ASTDumpDecls)
2923 GenerateArg(Consumer, OptSpecifier: OPT_ast_dump);
2924 }
2925 };
2926 }
2927
2928 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) {
2929 GenerateProgramAction = [&]() {
2930 GenerateArg(Consumer, OptSpecifier: OPT_fixit_EQ, Value: Opts.FixItSuffix);
2931 };
2932 }
2933
2934 GenerateProgramAction();
2935
2936 for (const auto &PluginArgs : Opts.PluginArgs) {
2937 Option Opt = getDriverOptTable().getOption(Opt: OPT_plugin_arg);
2938 for (const auto &PluginArg : PluginArgs.second)
2939 denormalizeString(Consumer,
2940 Spelling: Opt.getPrefix() + Opt.getName() + PluginArgs.first,
2941 OptClass: Opt.getKind(), TableIndex: 0, Value: PluginArg);
2942 }
2943
2944 for (const auto &Ext : Opts.ModuleFileExtensions)
2945 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Val: Ext.get()))
2946 GenerateArg(Consumer, OptSpecifier: OPT_ftest_module_file_extension_EQ, Value: TestExt->str());
2947
2948 if (!Opts.CodeCompletionAt.FileName.empty())
2949 GenerateArg(Consumer, OptSpecifier: OPT_code_completion_at,
2950 Value: Opts.CodeCompletionAt.ToString());
2951
2952 for (const auto &Plugin : Opts.Plugins)
2953 GenerateArg(Consumer, OptSpecifier: OPT_load, Value: Plugin);
2954
2955 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction.
2956
2957 for (const auto &ModuleFile : Opts.ModuleFiles)
2958 GenerateArg(Consumer, OptSpecifier: OPT_fmodule_file, Value: ModuleFile);
2959
2960 if (Opts.AuxTargetCPU)
2961 GenerateArg(Consumer, OptSpecifier: OPT_aux_target_cpu, Value: *Opts.AuxTargetCPU);
2962
2963 if (Opts.AuxTargetFeatures)
2964 for (const auto &Feature : *Opts.AuxTargetFeatures)
2965 GenerateArg(Consumer, OptSpecifier: OPT_aux_target_feature, Value: Feature);
2966
2967 {
2968 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : "";
2969 StringRef ModuleMap =
2970 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : "";
2971 StringRef HeaderUnit = "";
2972 switch (Opts.DashX.getHeaderUnitKind()) {
2973 case InputKind::HeaderUnit_None:
2974 break;
2975 case InputKind::HeaderUnit_User:
2976 HeaderUnit = "-user";
2977 break;
2978 case InputKind::HeaderUnit_System:
2979 HeaderUnit = "-system";
2980 break;
2981 case InputKind::HeaderUnit_Abs:
2982 HeaderUnit = "-header-unit";
2983 break;
2984 }
2985 StringRef Header = IsHeader ? "-header" : "";
2986
2987 StringRef Lang;
2988 switch (Opts.DashX.getLanguage()) {
2989 case Language::C:
2990 Lang = "c";
2991 break;
2992 case Language::OpenCL:
2993 Lang = "cl";
2994 break;
2995 case Language::OpenCLCXX:
2996 Lang = "clcpp";
2997 break;
2998 case Language::CUDA:
2999 Lang = "cuda";
3000 break;
3001 case Language::HIP:
3002 Lang = "hip";
3003 break;
3004 case Language::CXX:
3005 Lang = "c++";
3006 break;
3007 case Language::ObjC:
3008 Lang = "objective-c";
3009 break;
3010 case Language::ObjCXX:
3011 Lang = "objective-c++";
3012 break;
3013 case Language::Asm:
3014 Lang = "assembler-with-cpp";
3015 break;
3016 case Language::Unknown:
3017 assert(Opts.DashX.getFormat() == InputKind::Precompiled &&
3018 "Generating -x argument for unknown language (not precompiled).");
3019 Lang = "ast";
3020 break;
3021 case Language::LLVM_IR:
3022 Lang = "ir";
3023 break;
3024 case Language::HLSL:
3025 Lang = "hlsl";
3026 break;
3027 case Language::CIR:
3028 Lang = "cir";
3029 break;
3030 }
3031
3032 GenerateArg(Consumer, OptSpecifier: OPT_x,
3033 Value: Lang + HeaderUnit + Header + ModuleMap + Preprocessed);
3034 }
3035
3036 // OPT_INPUT has a unique class, generate it directly.
3037 for (const auto &Input : Opts.Inputs)
3038 Consumer(Input.getFile());
3039}
3040
3041static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
3042 DiagnosticsEngine &Diags, bool &IsHeaderFile) {
3043 unsigned NumErrorsBefore = Diags.getNumErrors();
3044
3045 FrontendOptions &FrontendOpts = Opts;
3046
3047#define FRONTEND_OPTION_WITH_MARSHALLING(...) \
3048 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
3049#include "clang/Options/Options.inc"
3050#undef FRONTEND_OPTION_WITH_MARSHALLING
3051
3052 Opts.ProgramAction = frontend::ParseSyntaxOnly;
3053 if (const Arg *A = Args.getLastArg(Ids: OPT_Action_Group)) {
3054 OptSpecifier Opt = OptSpecifier(A->getOption().getID());
3055 std::optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt);
3056 assert(ProgramAction && "Option specifier not in Action_Group.");
3057
3058 if (ProgramAction == frontend::ASTDump &&
3059 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) {
3060 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
3061 .CaseLower(S: "default", Value: ADOF_Default)
3062 .CaseLower(S: "json", Value: ADOF_JSON)
3063 .Default(Value: std::numeric_limits<unsigned>::max());
3064
3065 if (Val != std::numeric_limits<unsigned>::max())
3066 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val);
3067 else {
3068 Diags.Report(DiagID: diag::err_drv_invalid_value)
3069 << A->getAsString(Args) << A->getValue();
3070 Opts.ASTDumpFormat = ADOF_Default;
3071 }
3072 }
3073
3074 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ)
3075 Opts.FixItSuffix = A->getValue();
3076
3077 if (ProgramAction == frontend::GenerateInterfaceStubs) {
3078 StringRef ArgStr =
3079 Args.hasArg(Ids: OPT_interface_stub_version_EQ)
3080 ? Args.getLastArgValue(Id: OPT_interface_stub_version_EQ)
3081 : "ifs-v1";
3082 if (ArgStr == "experimental-yaml-elf-v1" ||
3083 ArgStr == "experimental-ifs-v1" || ArgStr == "experimental-ifs-v2" ||
3084 ArgStr == "experimental-tapi-elf-v1") {
3085 std::string ErrorMessage =
3086 "Invalid interface stub format: " + ArgStr.str() +
3087 " is deprecated.";
3088 Diags.Report(DiagID: diag::err_drv_invalid_value)
3089 << "Must specify a valid interface stub format type, ie: "
3090 "-interface-stub-version=ifs-v1"
3091 << ErrorMessage;
3092 ProgramAction = frontend::ParseSyntaxOnly;
3093 } else if (!ArgStr.starts_with(Prefix: "ifs-")) {
3094 std::string ErrorMessage =
3095 "Invalid interface stub format: " + ArgStr.str() + ".";
3096 Diags.Report(DiagID: diag::err_drv_invalid_value)
3097 << "Must specify a valid interface stub format type, ie: "
3098 "-interface-stub-version=ifs-v1"
3099 << ErrorMessage;
3100 ProgramAction = frontend::ParseSyntaxOnly;
3101 }
3102 }
3103
3104 Opts.ProgramAction = *ProgramAction;
3105
3106 // Catch common mistakes when multiple actions are specified for cc1 (e.g.
3107 // -S -emit-llvm means -emit-llvm while -emit-llvm -S means -S). However, to
3108 // support driver `-c -Xclang ACTION` (-cc1 -emit-llvm file -main-file-name
3109 // X ACTION), we suppress the error when the two actions are separated by
3110 // -main-file-name.
3111 //
3112 // As an exception, accept composable -ast-dump*.
3113 if (!A->getSpelling().starts_with(Prefix: "-ast-dump")) {
3114 const Arg *SavedAction = nullptr;
3115 for (const Arg *AA :
3116 Args.filtered(Ids: OPT_Action_Group, Ids: OPT_main_file_name)) {
3117 if (AA->getOption().matches(ID: OPT_main_file_name)) {
3118 SavedAction = nullptr;
3119 } else if (!SavedAction) {
3120 SavedAction = AA;
3121 } else {
3122 if (!A->getOption().matches(ID: OPT_ast_dump_EQ))
3123 Diags.Report(DiagID: diag::err_fe_invalid_multiple_actions)
3124 << SavedAction->getSpelling() << A->getSpelling();
3125 break;
3126 }
3127 }
3128 }
3129 }
3130
3131 if (const Arg* A = Args.getLastArg(Ids: OPT_plugin)) {
3132 Opts.Plugins.emplace_back(args: A->getValue(N: 0));
3133 Opts.ProgramAction = frontend::PluginAction;
3134 Opts.ActionName = A->getValue();
3135 }
3136 for (const auto *AA : Args.filtered(Ids: OPT_plugin_arg))
3137 Opts.PluginArgs[AA->getValue(N: 0)].emplace_back(args: AA->getValue(N: 1));
3138
3139 for (const std::string &Arg :
3140 Args.getAllArgValues(Id: OPT_ftest_module_file_extension_EQ)) {
3141 std::string BlockName;
3142 unsigned MajorVersion;
3143 unsigned MinorVersion;
3144 bool Hashed;
3145 std::string UserInfo;
3146 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
3147 MinorVersion, Hashed, UserInfo)) {
3148 Diags.Report(DiagID: diag::err_test_module_file_extension_format) << Arg;
3149
3150 continue;
3151 }
3152
3153 // Add the testing module file extension.
3154 Opts.ModuleFileExtensions.push_back(
3155 x: std::make_shared<TestModuleFileExtension>(
3156 args&: BlockName, args&: MajorVersion, args&: MinorVersion, args&: Hashed, args&: UserInfo));
3157 }
3158
3159 if (const Arg *A = Args.getLastArg(Ids: OPT_code_completion_at)) {
3160 Opts.CodeCompletionAt =
3161 ParsedSourceLocation::FromString(Str: A->getValue());
3162 if (Opts.CodeCompletionAt.FileName.empty()) {
3163 Diags.Report(DiagID: diag::err_drv_invalid_value)
3164 << A->getAsString(Args) << A->getValue();
3165 Diags.Report(DiagID: diag::note_command_line_code_loc_requirement);
3166 }
3167 }
3168
3169 Opts.Plugins = Args.getAllArgValues(Id: OPT_load);
3170 Opts.ASTDumpDecls = Args.hasArg(Ids: OPT_ast_dump, Ids: OPT_ast_dump_EQ);
3171 Opts.ASTDumpAll = Args.hasArg(Ids: OPT_ast_dump_all, Ids: OPT_ast_dump_all_EQ);
3172 // Only the -fmodule-file=<file> form.
3173 for (const auto *A : Args.filtered(Ids: OPT_fmodule_file)) {
3174 StringRef Val = A->getValue();
3175 if (!Val.contains(C: '='))
3176 Opts.ModuleFiles.push_back(x: std::string(Val));
3177 }
3178
3179 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule)
3180 Diags.Report(DiagID: diag::err_drv_argument_only_allowed_with) << "-fsystem-module"
3181 << "-emit-module";
3182 if (Args.hasArg(Ids: OPT_emit_cir))
3183 Opts.UseClangIRPipeline = true;
3184
3185#if CLANG_ENABLE_CIR
3186 if (Args.hasArg(OPT_clangir_disable_passes))
3187 Opts.ClangIRDisablePasses = true;
3188
3189 if (Args.hasArg(OPT_clangir_disable_verifier))
3190 Opts.ClangIRDisableCIRVerifier = true;
3191
3192 if (Args.hasArg(OPT_clangir_lib_opt) || Args.hasArg(OPT_clangir_lib_opt_EQ))
3193 Opts.ClangIRLibOptEnabled = true;
3194#endif // CLANG_ENABLE_CIR
3195
3196 if (Args.hasArg(Ids: OPT_aux_target_cpu))
3197 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(Id: OPT_aux_target_cpu));
3198 if (Args.hasArg(Ids: OPT_aux_target_feature))
3199 Opts.AuxTargetFeatures = Args.getAllArgValues(Id: OPT_aux_target_feature);
3200
3201 InputKind DashX(Language::Unknown);
3202 if (const Arg *A = Args.getLastArg(Ids: OPT_x)) {
3203 StringRef XValue = A->getValue();
3204
3205 // Parse suffixes:
3206 // '<lang>(-[{header-unit,user,system}-]header|[-module-map][-cpp-output])'.
3207 // FIXME: Supporting '<lang>-header-cpp-output' would be useful.
3208 bool Preprocessed = XValue.consume_back(Suffix: "-cpp-output");
3209 bool ModuleMap = XValue.consume_back(Suffix: "-module-map");
3210 // Detect and consume the header indicator.
3211 bool IsHeader =
3212 XValue != "precompiled-header" && XValue.consume_back(Suffix: "-header");
3213
3214 // If we have c++-{user,system}-header, that indicates a header unit input
3215 // likewise, if the user put -fmodule-header together with a header with an
3216 // absolute path (header-unit-header).
3217 InputKind::HeaderUnitKind HUK = InputKind::HeaderUnit_None;
3218 if (IsHeader || Preprocessed) {
3219 if (XValue.consume_back(Suffix: "-header-unit"))
3220 HUK = InputKind::HeaderUnit_Abs;
3221 else if (XValue.consume_back(Suffix: "-system"))
3222 HUK = InputKind::HeaderUnit_System;
3223 else if (XValue.consume_back(Suffix: "-user"))
3224 HUK = InputKind::HeaderUnit_User;
3225 }
3226
3227 // The value set by this processing is an un-preprocessed source which is
3228 // not intended to be a module map or header unit.
3229 IsHeaderFile = IsHeader && !Preprocessed && !ModuleMap &&
3230 HUK == InputKind::HeaderUnit_None;
3231
3232 // Principal languages.
3233 DashX = llvm::StringSwitch<InputKind>(XValue)
3234 .Case(S: "c", Value: Language::C)
3235 .Case(S: "cl", Value: Language::OpenCL)
3236 .Case(S: "clcpp", Value: Language::OpenCLCXX)
3237 .Case(S: "cuda", Value: Language::CUDA)
3238 .Case(S: "hip", Value: Language::HIP)
3239 .Case(S: "c++", Value: Language::CXX)
3240 .Case(S: "objective-c", Value: Language::ObjC)
3241 .Case(S: "objective-c++", Value: Language::ObjCXX)
3242 .Case(S: "hlsl", Value: Language::HLSL)
3243 .Default(Value: Language::Unknown);
3244
3245 // "objc[++]-cpp-output" is an acceptable synonym for
3246 // "objective-c[++]-cpp-output".
3247 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap &&
3248 HUK == InputKind::HeaderUnit_None)
3249 DashX = llvm::StringSwitch<InputKind>(XValue)
3250 .Case(S: "objc", Value: Language::ObjC)
3251 .Case(S: "objc++", Value: Language::ObjCXX)
3252 .Default(Value: Language::Unknown);
3253
3254 // Some special cases cannot be combined with suffixes.
3255 if (DashX.isUnknown() && !Preprocessed && !IsHeaderFile && !ModuleMap &&
3256 HUK == InputKind::HeaderUnit_None)
3257 DashX = llvm::StringSwitch<InputKind>(XValue)
3258 .Case(S: "cpp-output", Value: InputKind(Language::C).getPreprocessed())
3259 .Case(S: "assembler-with-cpp", Value: Language::Asm)
3260 .Cases(CaseStrings: {"ast", "pcm", "precompiled-header"},
3261 Value: InputKind(Language::Unknown, InputKind::Precompiled))
3262 .Case(S: "ir", Value: Language::LLVM_IR)
3263 .Case(S: "cir", Value: Language::CIR)
3264 .Default(Value: Language::Unknown);
3265
3266 if (DashX.isUnknown())
3267 Diags.Report(DiagID: diag::err_drv_invalid_value)
3268 << A->getAsString(Args) << A->getValue();
3269
3270 if (Preprocessed)
3271 DashX = DashX.getPreprocessed();
3272 // A regular header is considered mutually exclusive with a header unit.
3273 if (HUK != InputKind::HeaderUnit_None) {
3274 DashX = DashX.withHeaderUnit(HU: HUK);
3275 IsHeaderFile = true;
3276 } else if (IsHeaderFile)
3277 DashX = DashX.getHeader();
3278 if (ModuleMap)
3279 DashX = DashX.withFormat(F: InputKind::ModuleMap);
3280 }
3281
3282 // '-' is the default input if none is given.
3283 std::vector<std::string> Inputs = Args.getAllArgValues(Id: OPT_INPUT);
3284 Opts.Inputs.clear();
3285 if (Inputs.empty())
3286 Inputs.push_back(x: "-");
3287
3288 if (DashX.getHeaderUnitKind() != InputKind::HeaderUnit_None &&
3289 Inputs.size() > 1)
3290 Diags.Report(DiagID: diag::err_drv_header_unit_extra_inputs) << Inputs[1];
3291
3292 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
3293 InputKind IK = DashX;
3294 if (IK.isUnknown()) {
3295 IK = FrontendOptions::getInputKindForExtension(
3296 Extension: StringRef(Inputs[i]).rsplit(Separator: '.').second);
3297 // FIXME: Warn on this?
3298 if (IK.isUnknown())
3299 IK = Language::C;
3300 // FIXME: Remove this hack.
3301 if (i == 0)
3302 DashX = IK;
3303 }
3304
3305 bool IsSystem = false;
3306
3307 // The -emit-module action implicitly takes a module map.
3308 if (Opts.ProgramAction == frontend::GenerateModule &&
3309 IK.getFormat() == InputKind::Source) {
3310 IK = IK.withFormat(F: InputKind::ModuleMap);
3311 IsSystem = Opts.IsSystemModule;
3312 }
3313
3314 Opts.Inputs.emplace_back(Args: std::move(Inputs[i]), Args&: IK, Args&: IsSystem);
3315 }
3316
3317 Opts.DashX = DashX;
3318
3319 // CIR is a source-level frontend pipeline. When the input is already LLVM IR
3320 // (e.g. during the backend phase of OpenMP offloading), the standard LLVM
3321 // backend should be used instead.
3322 if (Opts.UseClangIRPipeline && DashX.getLanguage() == Language::LLVM_IR)
3323 Opts.UseClangIRPipeline = false;
3324
3325 return Diags.getNumErrors() == NumErrorsBefore;
3326}
3327
3328static void GenerateHeaderSearchArgs(const HeaderSearchOptions &Opts,
3329 ArgumentConsumer Consumer) {
3330 const HeaderSearchOptions *HeaderSearchOpts = &Opts;
3331#define HEADER_SEARCH_OPTION_WITH_MARSHALLING(...) \
3332 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
3333#include "clang/Options/Options.inc"
3334#undef HEADER_SEARCH_OPTION_WITH_MARSHALLING
3335
3336 if (Opts.UseLibcxx)
3337 GenerateArg(Consumer, OptSpecifier: OPT_stdlib_EQ, Value: "libc++");
3338
3339 for (const auto &File : Opts.PrebuiltModuleFiles)
3340 GenerateArg(Consumer, OptSpecifier: OPT_fmodule_file, Value: File.first + "=" + File.second);
3341
3342 for (const auto &Path : Opts.PrebuiltModulePaths)
3343 GenerateArg(Consumer, OptSpecifier: OPT_fprebuilt_module_path, Value: Path);
3344
3345 for (const auto &Macro : Opts.ModulesIgnoreMacros)
3346 GenerateArg(Consumer, OptSpecifier: OPT_fmodules_ignore_macro, Value: Macro.val());
3347
3348 for (const auto &Path : Opts.ModulesIgnoreSearchPaths)
3349 GenerateArg(Consumer, OptSpecifier: OPT_fmodules_ignore_search_path, Value: Path.val());
3350
3351 auto Matches = [](const HeaderSearchOptions::Entry &Entry,
3352 llvm::ArrayRef<frontend::IncludeDirGroup> Groups,
3353 std::optional<bool> IsFramework,
3354 std::optional<bool> IgnoreSysRoot) {
3355 return llvm::is_contained(Range&: Groups, Element: Entry.Group) &&
3356 (!IsFramework || (Entry.IsFramework == *IsFramework)) &&
3357 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot));
3358 };
3359
3360 auto It = Opts.UserEntries.begin();
3361 auto End = Opts.UserEntries.end();
3362
3363 // Add -I... and -F... options in order.
3364 for (; It < End && Matches(*It, {frontend::Angled}, std::nullopt, true);
3365 ++It) {
3366 OptSpecifier Opt = [It, Matches]() {
3367 if (Matches(*It, frontend::Angled, true, true))
3368 return OPT_F;
3369 if (Matches(*It, frontend::Angled, false, true))
3370 return OPT_I;
3371 llvm_unreachable("Unexpected HeaderSearchOptions::Entry.");
3372 }();
3373
3374 GenerateArg(Consumer, OptSpecifier: Opt, Value: It->Path);
3375 }
3376
3377 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may
3378 // have already been generated as "-I[xx]yy". If that's the case, their
3379 // position on command line was such that this has no semantic impact on
3380 // include paths.
3381 for (; It < End &&
3382 Matches(*It, {frontend::After, frontend::Angled}, false, true);
3383 ++It) {
3384 OptSpecifier Opt =
3385 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore;
3386 GenerateArg(Consumer, OptSpecifier: Opt, Value: It->Path);
3387 }
3388
3389 // Note: Some paths that came from "-idirafter=xxyy" may have already been
3390 // generated as "-iwithprefix=xxyy". If that's the case, their position on
3391 // command line was such that this has no semantic impact on include paths.
3392 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It)
3393 GenerateArg(Consumer, OptSpecifier: OPT_idirafter, Value: It->Path);
3394 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It)
3395 GenerateArg(Consumer, OptSpecifier: OPT_iquote, Value: It->Path);
3396 for (; It < End && Matches(*It, {frontend::System}, false, std::nullopt);
3397 ++It)
3398 GenerateArg(Consumer, OptSpecifier: It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot,
3399 Value: It->Path);
3400 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It)
3401 GenerateArg(Consumer, OptSpecifier: OPT_iframework, Value: It->Path);
3402 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It)
3403 GenerateArg(Consumer, OptSpecifier: OPT_iframeworkwithsysroot, Value: It->Path);
3404
3405 // Add the paths for the various language specific isystem flags.
3406 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It)
3407 GenerateArg(Consumer, OptSpecifier: OPT_c_isystem, Value: It->Path);
3408 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It)
3409 GenerateArg(Consumer, OptSpecifier: OPT_cxx_isystem, Value: It->Path);
3410 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It)
3411 GenerateArg(Consumer, OptSpecifier: OPT_objc_isystem, Value: It->Path);
3412 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It)
3413 GenerateArg(Consumer, OptSpecifier: OPT_objcxx_isystem, Value: It->Path);
3414
3415 // Add the internal paths from a driver that detects standard include paths.
3416 // Note: Some paths that came from "-internal-isystem" arguments may have
3417 // already been generated as "-isystem". If that's the case, their position on
3418 // command line was such that this has no semantic impact on include paths.
3419 for (; It < End &&
3420 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true);
3421 ++It) {
3422 OptSpecifier Opt = It->Group == frontend::System
3423 ? OPT_internal_isystem
3424 : OPT_internal_externc_isystem;
3425 GenerateArg(Consumer, OptSpecifier: Opt, Value: It->Path);
3426 }
3427 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It)
3428 GenerateArg(Consumer, OptSpecifier: OPT_internal_iframework, Value: It->Path);
3429
3430 assert(It == End && "Unhandled HeaderSearchOption::Entry.");
3431
3432 // Add the path prefixes which are implicitly treated as being system headers.
3433 for (const auto &P : Opts.SystemHeaderPrefixes) {
3434 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix
3435 : OPT_no_system_header_prefix;
3436 GenerateArg(Consumer, OptSpecifier: Opt, Value: P.Prefix);
3437 }
3438
3439 for (const std::string &F : Opts.VFSOverlayFiles)
3440 GenerateArg(Consumer, OptSpecifier: OPT_ivfsoverlay, Value: F);
3441}
3442
3443static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
3444 DiagnosticsEngine &Diags) {
3445 unsigned NumErrorsBefore = Diags.getNumErrors();
3446
3447 HeaderSearchOptions *HeaderSearchOpts = &Opts;
3448
3449#define HEADER_SEARCH_OPTION_WITH_MARSHALLING(...) \
3450 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
3451#include "clang/Options/Options.inc"
3452#undef HEADER_SEARCH_OPTION_WITH_MARSHALLING
3453
3454 if (const Arg *A = Args.getLastArg(Ids: OPT_stdlib_EQ))
3455 Opts.UseLibcxx = (strcmp(s1: A->getValue(), s2: "libc++") == 0);
3456
3457 // Only the -fmodule-file=<name>=<file> form.
3458 for (const auto *A : Args.filtered(Ids: OPT_fmodule_file)) {
3459 StringRef Val = A->getValue();
3460 if (Val.contains(C: '=')) {
3461 auto Split = Val.split(Separator: '=');
3462 Opts.PrebuiltModuleFiles.insert_or_assign(
3463 k: std::string(Split.first), obj: std::string(Split.second));
3464 }
3465 }
3466 for (const auto *A : Args.filtered(Ids: OPT_fprebuilt_module_path))
3467 Opts.AddPrebuiltModulePath(Name: A->getValue());
3468
3469 for (const auto *A : Args.filtered(Ids: OPT_fmodules_ignore_macro)) {
3470 StringRef MacroDef = A->getValue();
3471 Opts.ModulesIgnoreMacros.insert(
3472 X: llvm::CachedHashString(MacroDef.split(Separator: '=').first));
3473 }
3474
3475 for (const auto *A : Args.filtered(Ids: OPT_fmodules_ignore_search_path))
3476 Opts.ModulesIgnoreSearchPaths.insert(X: llvm::CachedHashString(A->getValue()));
3477
3478 // Add -I... and -F... options in order.
3479 bool IsSysrootSpecified =
3480 Args.hasArg(Ids: OPT__sysroot_EQ) || Args.hasArg(Ids: OPT_isysroot);
3481
3482 // Expand a leading `=` to the sysroot if one was passed (and it's not a
3483 // framework flag).
3484 auto PrefixHeaderPath = [IsSysrootSpecified,
3485 &Opts](const llvm::opt::Arg *A,
3486 bool IsFramework = false) -> std::string {
3487 assert(A->getNumValues() && "Unexpected empty search path flag!");
3488 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
3489 SmallString<32> Buffer;
3490 llvm::sys::path::append(path&: Buffer, a: Opts.Sysroot,
3491 b: llvm::StringRef(A->getValue()).substr(Start: 1));
3492 return std::string(Buffer);
3493 }
3494 return A->getValue();
3495 };
3496
3497 for (const auto *A : Args.filtered(Ids: OPT_I, Ids: OPT_F)) {
3498 bool IsFramework = A->getOption().matches(ID: OPT_F);
3499 Opts.AddPath(Path: PrefixHeaderPath(A, IsFramework), Group: frontend::Angled,
3500 IsFramework, /*IgnoreSysroot=*/IgnoreSysRoot: true);
3501 }
3502
3503 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
3504 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
3505 for (const auto *A :
3506 Args.filtered(Ids: OPT_iprefix, Ids: OPT_iwithprefix, Ids: OPT_iwithprefixbefore)) {
3507 if (A->getOption().matches(ID: OPT_iprefix))
3508 Prefix = A->getValue();
3509 else if (A->getOption().matches(ID: OPT_iwithprefix))
3510 Opts.AddPath(Path: Prefix.str() + A->getValue(), Group: frontend::After, IsFramework: false, IgnoreSysRoot: true);
3511 else
3512 Opts.AddPath(Path: Prefix.str() + A->getValue(), Group: frontend::Angled, IsFramework: false, IgnoreSysRoot: true);
3513 }
3514
3515 for (const auto *A : Args.filtered(Ids: OPT_idirafter))
3516 Opts.AddPath(Path: PrefixHeaderPath(A), Group: frontend::After, IsFramework: false, IgnoreSysRoot: true);
3517 for (const auto *A : Args.filtered(Ids: OPT_iquote))
3518 Opts.AddPath(Path: PrefixHeaderPath(A), Group: frontend::Quoted, IsFramework: false, IgnoreSysRoot: true);
3519
3520 for (const auto *A : Args.filtered(Ids: OPT_isystem, Ids: OPT_iwithsysroot)) {
3521 if (A->getOption().matches(ID: OPT_iwithsysroot)) {
3522 Opts.AddPath(Path: A->getValue(), Group: frontend::System, IsFramework: false,
3523 /*IgnoreSysRoot=*/false);
3524 continue;
3525 }
3526 Opts.AddPath(Path: PrefixHeaderPath(A), Group: frontend::System, IsFramework: false, IgnoreSysRoot: true);
3527 }
3528 for (const auto *A : Args.filtered(Ids: OPT_iframework))
3529 Opts.AddPath(Path: A->getValue(), Group: frontend::System, IsFramework: true, IgnoreSysRoot: true);
3530 for (const auto *A : Args.filtered(Ids: OPT_iframeworkwithsysroot))
3531 Opts.AddPath(Path: A->getValue(), Group: frontend::System, /*IsFramework=*/true,
3532 /*IgnoreSysRoot=*/false);
3533
3534 // Add the paths for the various language specific isystem flags.
3535 for (const auto *A : Args.filtered(Ids: OPT_c_isystem))
3536 Opts.AddPath(Path: A->getValue(), Group: frontend::CSystem, IsFramework: false, IgnoreSysRoot: true);
3537 for (const auto *A : Args.filtered(Ids: OPT_cxx_isystem))
3538 Opts.AddPath(Path: A->getValue(), Group: frontend::CXXSystem, IsFramework: false, IgnoreSysRoot: true);
3539 for (const auto *A : Args.filtered(Ids: OPT_objc_isystem))
3540 Opts.AddPath(Path: A->getValue(), Group: frontend::ObjCSystem, IsFramework: false,IgnoreSysRoot: true);
3541 for (const auto *A : Args.filtered(Ids: OPT_objcxx_isystem))
3542 Opts.AddPath(Path: A->getValue(), Group: frontend::ObjCXXSystem, IsFramework: false, IgnoreSysRoot: true);
3543
3544 // Add the internal paths from a driver that detects standard include paths.
3545 for (const auto *A :
3546 Args.filtered(Ids: OPT_internal_isystem, Ids: OPT_internal_externc_isystem)) {
3547 frontend::IncludeDirGroup Group = frontend::System;
3548 if (A->getOption().matches(ID: OPT_internal_externc_isystem))
3549 Group = frontend::ExternCSystem;
3550 Opts.AddPath(Path: A->getValue(), Group, IsFramework: false, IgnoreSysRoot: true);
3551 }
3552 for (const auto *A : Args.filtered(Ids: OPT_internal_iframework))
3553 Opts.AddPath(Path: A->getValue(), Group: frontend::System, IsFramework: true, IgnoreSysRoot: true);
3554
3555 // Add the path prefixes which are implicitly treated as being system headers.
3556 for (const auto *A :
3557 Args.filtered(Ids: OPT_system_header_prefix, Ids: OPT_no_system_header_prefix))
3558 Opts.AddSystemHeaderPrefix(
3559 Prefix: A->getValue(), IsSystemHeader: A->getOption().matches(ID: OPT_system_header_prefix));
3560
3561 for (const auto *A : Args.filtered(Ids: OPT_ivfsoverlay, Ids: OPT_vfsoverlay))
3562 Opts.AddVFSOverlayFile(Name: A->getValue());
3563
3564 return Diags.getNumErrors() == NumErrorsBefore;
3565}
3566
3567static void GenerateAPINotesArgs(const APINotesOptions &Opts,
3568 ArgumentConsumer Consumer) {
3569 if (!Opts.SwiftVersion.empty())
3570 GenerateArg(Consumer, OptSpecifier: OPT_fapinotes_swift_version,
3571 Value: Opts.SwiftVersion.getAsString());
3572
3573 for (const auto &Path : Opts.ModuleSearchPaths)
3574 GenerateArg(Consumer, OptSpecifier: OPT_iapinotes_modules, Value: Path);
3575}
3576
3577static void ParseAPINotesArgs(APINotesOptions &Opts, ArgList &Args,
3578 DiagnosticsEngine &diags) {
3579 if (const Arg *A = Args.getLastArg(Ids: OPT_fapinotes_swift_version)) {
3580 if (Opts.SwiftVersion.tryParse(string: A->getValue()))
3581 diags.Report(DiagID: diag::err_drv_invalid_value)
3582 << A->getAsString(Args) << A->getValue();
3583 }
3584 for (const Arg *A : Args.filtered(Ids: OPT_iapinotes_modules))
3585 Opts.ModuleSearchPaths.push_back(x: A->getValue());
3586}
3587
3588static void GeneratePointerAuthArgs(const LangOptions &Opts,
3589 ArgumentConsumer Consumer) {
3590 if (Opts.PointerAuthIntrinsics)
3591 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_intrinsics);
3592 if (Opts.PointerAuthCalls)
3593 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_calls);
3594 if (Opts.PointerAuthReturns)
3595 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_returns);
3596 if (Opts.PointerAuthIndirectGotos)
3597 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_indirect_gotos);
3598 if (Opts.PointerAuthAuthTraps)
3599 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_auth_traps);
3600 if (Opts.PointerAuthVTPtrAddressDiscrimination)
3601 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_vtable_pointer_address_discrimination);
3602 if (Opts.PointerAuthVTPtrTypeDiscrimination)
3603 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_vtable_pointer_type_discrimination);
3604 if (Opts.PointerAuthVTTVTPtrDiscrimination)
3605 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_vtt_vtable_pointer_discrimination);
3606 if (Opts.PointerAuthTypeInfoVTPtrDiscrimination)
3607 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_type_info_vtable_pointer_discrimination);
3608 if (Opts.PointerAuthFunctionTypeDiscrimination)
3609 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_function_pointer_type_discrimination);
3610 if (Opts.PointerAuthInitFini)
3611 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_init_fini);
3612 if (Opts.PointerAuthInitFiniAddressDiscrimination)
3613 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_init_fini_address_discrimination);
3614 if (Opts.PointerAuthELFGOT)
3615 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_elf_got);
3616 if (Opts.AArch64JumpTableHardening)
3617 GenerateArg(Consumer, OptSpecifier: OPT_faarch64_jump_table_hardening);
3618 if (Opts.PointerAuthObjcIsa)
3619 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_objc_isa);
3620 if (Opts.PointerAuthObjcInterfaceSel)
3621 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_objc_interface_sel);
3622 if (Opts.PointerAuthObjcClassROPointers)
3623 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_objc_class_ro);
3624 if (Opts.PointerAuthBlockDescriptorPointers)
3625 GenerateArg(Consumer, OptSpecifier: OPT_fptrauth_block_descriptor_pointers);
3626}
3627
3628static void ParsePointerAuthArgs(LangOptions &Opts, ArgList &Args,
3629 DiagnosticsEngine &Diags) {
3630 Opts.PointerAuthIntrinsics = Args.hasArg(Ids: OPT_fptrauth_intrinsics);
3631 Opts.PointerAuthCalls = Args.hasArg(Ids: OPT_fptrauth_calls);
3632 Opts.PointerAuthReturns = Args.hasArg(Ids: OPT_fptrauth_returns);
3633 Opts.PointerAuthIndirectGotos = Args.hasArg(Ids: OPT_fptrauth_indirect_gotos);
3634 Opts.PointerAuthAuthTraps = Args.hasArg(Ids: OPT_fptrauth_auth_traps);
3635 Opts.PointerAuthVTPtrAddressDiscrimination =
3636 Args.hasArg(Ids: OPT_fptrauth_vtable_pointer_address_discrimination);
3637 Opts.PointerAuthVTPtrTypeDiscrimination =
3638 Args.hasArg(Ids: OPT_fptrauth_vtable_pointer_type_discrimination);
3639 Opts.PointerAuthVTTVTPtrDiscrimination =
3640 Args.hasArg(Ids: OPT_fptrauth_vtt_vtable_pointer_discrimination);
3641 Opts.PointerAuthTypeInfoVTPtrDiscrimination =
3642 Args.hasArg(Ids: OPT_fptrauth_type_info_vtable_pointer_discrimination);
3643 Opts.PointerAuthFunctionTypeDiscrimination =
3644 Args.hasArg(Ids: OPT_fptrauth_function_pointer_type_discrimination);
3645 Opts.PointerAuthInitFini = Args.hasArg(Ids: OPT_fptrauth_init_fini);
3646 Opts.PointerAuthInitFiniAddressDiscrimination =
3647 Args.hasArg(Ids: OPT_fptrauth_init_fini_address_discrimination);
3648 Opts.PointerAuthELFGOT = Args.hasArg(Ids: OPT_fptrauth_elf_got);
3649 Opts.AArch64JumpTableHardening =
3650 Args.hasArg(Ids: OPT_faarch64_jump_table_hardening);
3651 Opts.PointerAuthBlockDescriptorPointers =
3652 Args.hasArg(Ids: OPT_fptrauth_block_descriptor_pointers);
3653 Opts.PointerAuthObjcIsa = Args.hasArg(Ids: OPT_fptrauth_objc_isa);
3654 Opts.PointerAuthObjcClassROPointers = Args.hasArg(Ids: OPT_fptrauth_objc_class_ro);
3655 Opts.PointerAuthObjcInterfaceSel =
3656 Args.hasArg(Ids: OPT_fptrauth_objc_interface_sel);
3657
3658 if (Opts.PointerAuthObjcInterfaceSel)
3659 Opts.PointerAuthObjcInterfaceSelKey =
3660 static_cast<unsigned>(PointerAuthSchema::ARM8_3Key::ASDB);
3661}
3662
3663/// Check if input file kind and language standard are compatible.
3664static bool IsInputCompatibleWithStandard(InputKind IK,
3665 const LangStandard &S) {
3666 switch (IK.getLanguage()) {
3667 case Language::Unknown:
3668 case Language::LLVM_IR:
3669 case Language::CIR:
3670 llvm_unreachable("should not parse language flags for this input");
3671
3672 case Language::C:
3673 case Language::ObjC:
3674 return S.getLanguage() == Language::C;
3675
3676 case Language::OpenCL:
3677 return S.getLanguage() == Language::OpenCL ||
3678 S.getLanguage() == Language::OpenCLCXX;
3679
3680 case Language::OpenCLCXX:
3681 return S.getLanguage() == Language::OpenCLCXX;
3682
3683 case Language::CXX:
3684 case Language::ObjCXX:
3685 return S.getLanguage() == Language::CXX;
3686
3687 case Language::CUDA:
3688 // FIXME: What -std= values should be permitted for CUDA compilations?
3689 return S.getLanguage() == Language::CUDA ||
3690 S.getLanguage() == Language::CXX;
3691
3692 case Language::HIP:
3693 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP;
3694
3695 case Language::Asm:
3696 // Accept (and ignore) all -std= values.
3697 // FIXME: The -std= value is not ignored; it affects the tokenization
3698 // and preprocessing rules if we're preprocessing this asm input.
3699 return true;
3700
3701 case Language::HLSL:
3702 return S.getLanguage() == Language::HLSL;
3703 }
3704
3705 llvm_unreachable("unexpected input language");
3706}
3707
3708/// Get language name for given input kind.
3709static StringRef GetInputKindName(InputKind IK) {
3710 switch (IK.getLanguage()) {
3711 case Language::C:
3712 return "C";
3713 case Language::ObjC:
3714 return "Objective-C";
3715 case Language::CXX:
3716 return "C++";
3717 case Language::ObjCXX:
3718 return "Objective-C++";
3719 case Language::OpenCL:
3720 return "OpenCL";
3721 case Language::OpenCLCXX:
3722 return "C++ for OpenCL";
3723 case Language::CUDA:
3724 return "CUDA";
3725 case Language::HIP:
3726 return "HIP";
3727
3728 case Language::Asm:
3729 return "Asm";
3730 case Language::LLVM_IR:
3731 return "LLVM IR";
3732 case Language::CIR:
3733 return "Clang IR";
3734
3735 case Language::HLSL:
3736 return "HLSL";
3737
3738 case Language::Unknown:
3739 break;
3740 }
3741 llvm_unreachable("unknown input language");
3742}
3743
3744void CompilerInvocationBase::GenerateLangArgs(const LangOptions &Opts,
3745 ArgumentConsumer Consumer,
3746 const llvm::Triple &T,
3747 InputKind IK) {
3748 if (IK.getFormat() == InputKind::Precompiled ||
3749 IK.getLanguage() == Language::LLVM_IR ||
3750 IK.getLanguage() == Language::CIR) {
3751 if (Opts.ObjCAutoRefCount)
3752 GenerateArg(Consumer, OptSpecifier: OPT_fobjc_arc);
3753 if (Opts.PICLevel != 0)
3754 GenerateArg(Consumer, OptSpecifier: OPT_pic_level, Value: Twine(Opts.PICLevel));
3755 if (Opts.PIE)
3756 GenerateArg(Consumer, OptSpecifier: OPT_pic_is_pie);
3757 for (StringRef Sanitizer : serializeSanitizerKinds(S: Opts.Sanitize))
3758 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_EQ, Value: Sanitizer);
3759 for (StringRef Sanitizer :
3760 serializeSanitizerKinds(S: Opts.UBSanFeatureIgnoredSanitize))
3761 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_ignore_for_ubsan_feature_EQ,
3762 Value: Sanitizer);
3763
3764 return;
3765 }
3766
3767 OptSpecifier StdOpt;
3768 switch (Opts.LangStd) {
3769 case LangStandard::lang_opencl10:
3770 case LangStandard::lang_opencl11:
3771 case LangStandard::lang_opencl12:
3772 case LangStandard::lang_opencl20:
3773 case LangStandard::lang_opencl30:
3774 case LangStandard::lang_openclcpp10:
3775 case LangStandard::lang_openclcpp2021:
3776 StdOpt = OPT_cl_std_EQ;
3777 break;
3778 default:
3779 StdOpt = OPT_std_EQ;
3780 break;
3781 }
3782
3783 auto LangStandard = LangStandard::getLangStandardForKind(K: Opts.LangStd);
3784 GenerateArg(Consumer, OptSpecifier: StdOpt, Value: LangStandard.getName());
3785
3786 if (Opts.IncludeDefaultHeader)
3787 GenerateArg(Consumer, OptSpecifier: OPT_finclude_default_header);
3788 if (Opts.DeclareOpenCLBuiltins)
3789 GenerateArg(Consumer, OptSpecifier: OPT_fdeclare_opencl_builtins);
3790
3791 const LangOptions *LangOpts = &Opts;
3792
3793#define LANG_OPTION_WITH_MARSHALLING(...) \
3794 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
3795#include "clang/Options/Options.inc"
3796#undef LANG_OPTION_WITH_MARSHALLING
3797
3798 // The '-fcf-protection=' option is generated by CodeGenOpts generator.
3799
3800 if (Opts.ObjC) {
3801 GenerateArg(Consumer, OptSpecifier: OPT_fobjc_runtime_EQ, Value: Opts.ObjCRuntime.getAsString());
3802
3803 if (Opts.GC == LangOptions::GCOnly)
3804 GenerateArg(Consumer, OptSpecifier: OPT_fobjc_gc_only);
3805 else if (Opts.GC == LangOptions::HybridGC)
3806 GenerateArg(Consumer, OptSpecifier: OPT_fobjc_gc);
3807 else if (Opts.ObjCAutoRefCount == 1)
3808 GenerateArg(Consumer, OptSpecifier: OPT_fobjc_arc);
3809
3810 if (Opts.ObjCWeakRuntime)
3811 GenerateArg(Consumer, OptSpecifier: OPT_fobjc_runtime_has_weak);
3812
3813 if (Opts.ObjCWeak)
3814 GenerateArg(Consumer, OptSpecifier: OPT_fobjc_weak);
3815
3816 if (Opts.ObjCSubscriptingLegacyRuntime)
3817 GenerateArg(Consumer, OptSpecifier: OPT_fobjc_subscripting_legacy_runtime);
3818 }
3819
3820 if (Opts.GNUCVersion != 0) {
3821 unsigned Major = Opts.GNUCVersion / 100 / 100;
3822 unsigned Minor = (Opts.GNUCVersion / 100) % 100;
3823 unsigned Patch = Opts.GNUCVersion % 100;
3824 GenerateArg(Consumer, OptSpecifier: OPT_fgnuc_version_EQ,
3825 Value: Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch));
3826 }
3827
3828 if (Opts.IgnoreXCOFFVisibility)
3829 GenerateArg(Consumer, OptSpecifier: OPT_mignore_xcoff_visibility);
3830
3831 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) {
3832 GenerateArg(Consumer, OptSpecifier: OPT_ftrapv);
3833 GenerateArg(Consumer, OptSpecifier: OPT_ftrapv_handler, Value: Opts.OverflowHandler);
3834 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) {
3835 if (!Opts.MSVCCompat)
3836 GenerateArg(Consumer, OptSpecifier: OPT_fwrapv);
3837 } else if (Opts.MSVCCompat) {
3838 GenerateArg(Consumer, OptSpecifier: OPT_fno_wrapv);
3839 }
3840 if (Opts.PointerOverflowDefined)
3841 GenerateArg(Consumer, OptSpecifier: OPT_fwrapv_pointer);
3842
3843 if (Opts.MSCompatibilityVersion != 0) {
3844 unsigned Major = Opts.MSCompatibilityVersion / 10000000;
3845 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100;
3846 unsigned Subminor = Opts.MSCompatibilityVersion % 100000;
3847 GenerateArg(Consumer, OptSpecifier: OPT_fms_compatibility_version,
3848 Value: Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor));
3849 }
3850
3851 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17 && !Opts.C23) ||
3852 T.isOSzOS()) {
3853 if (!Opts.Trigraphs)
3854 GenerateArg(Consumer, OptSpecifier: OPT_fno_trigraphs);
3855 } else {
3856 if (Opts.Trigraphs)
3857 GenerateArg(Consumer, OptSpecifier: OPT_ftrigraphs);
3858 }
3859
3860 if (T.isOSzOS() && !Opts.ZOSExt)
3861 GenerateArg(Consumer, OptSpecifier: OPT_fno_zos_extensions);
3862 else if (Opts.ZOSExt)
3863 GenerateArg(Consumer, OptSpecifier: OPT_fzos_extensions);
3864
3865 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200))
3866 GenerateArg(Consumer, OptSpecifier: OPT_fblocks);
3867
3868 if (Opts.ConvergentFunctions)
3869 GenerateArg(Consumer, OptSpecifier: OPT_fconvergent_functions);
3870 else
3871 GenerateArg(Consumer, OptSpecifier: OPT_fno_convergent_functions);
3872
3873 if (Opts.NoBuiltin && !Opts.Freestanding)
3874 GenerateArg(Consumer, OptSpecifier: OPT_fno_builtin);
3875
3876 if (!Opts.NoBuiltin)
3877 for (const auto &Func : Opts.NoBuiltinFuncs)
3878 GenerateArg(Consumer, OptSpecifier: OPT_fno_builtin_, Value: Func);
3879
3880 if (Opts.LongDoubleSize == 128)
3881 GenerateArg(Consumer, OptSpecifier: OPT_mlong_double_128);
3882 else if (Opts.LongDoubleSize == 64)
3883 GenerateArg(Consumer, OptSpecifier: OPT_mlong_double_64);
3884 else if (Opts.LongDoubleSize == 80)
3885 GenerateArg(Consumer, OptSpecifier: OPT_mlong_double_80);
3886
3887 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='.
3888
3889 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or
3890 // '-fopenmp-targets='.
3891 if (Opts.OpenMP && !Opts.OpenMPSimd) {
3892 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp);
3893
3894 if (Opts.OpenMP != 51)
3895 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_version_EQ, Value: Twine(Opts.OpenMP));
3896
3897 if (!Opts.OpenMPUseTLS)
3898 GenerateArg(Consumer, OptSpecifier: OPT_fnoopenmp_use_tls);
3899
3900 if (Opts.OpenMPIsTargetDevice)
3901 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_is_target_device);
3902
3903 if (Opts.OpenMPIRBuilder)
3904 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_enable_irbuilder);
3905 }
3906
3907 if (Opts.OpenMPSimd) {
3908 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_simd);
3909
3910 if (Opts.OpenMP != 51)
3911 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_version_EQ, Value: Twine(Opts.OpenMP));
3912 }
3913
3914 if (Opts.OpenMPThreadSubscription)
3915 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_assume_threads_oversubscription);
3916
3917 if (Opts.OpenMPTeamSubscription)
3918 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_assume_teams_oversubscription);
3919
3920 if (Opts.OpenMPTargetDebug != 0)
3921 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_target_debug_EQ,
3922 Value: Twine(Opts.OpenMPTargetDebug));
3923
3924 if (Opts.OpenMPCUDANumSMs != 0)
3925 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_cuda_number_of_sm_EQ,
3926 Value: Twine(Opts.OpenMPCUDANumSMs));
3927
3928 if (Opts.OpenMPCUDABlocksPerSM != 0)
3929 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_cuda_blocks_per_sm_EQ,
3930 Value: Twine(Opts.OpenMPCUDABlocksPerSM));
3931
3932 if (!Opts.OMPTargetTriples.empty()) {
3933 std::string Targets;
3934 llvm::raw_string_ostream OS(Targets);
3935 llvm::interleave(
3936 c: Opts.OMPTargetTriples, os&: OS,
3937 each_fn: [&OS](const llvm::Triple &T) { OS << T.str(); }, separator: ",");
3938 GenerateArg(Consumer, OptSpecifier: OPT_offload_targets_EQ, Value: Targets);
3939 }
3940
3941 if (Opts.OpenMPCUDAMode)
3942 GenerateArg(Consumer, OptSpecifier: OPT_fopenmp_cuda_mode);
3943
3944 if (Opts.OpenACC)
3945 GenerateArg(Consumer, OptSpecifier: OPT_fopenacc);
3946
3947 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are
3948 // generated from CodeGenOptions.
3949
3950 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast)
3951 GenerateArg(Consumer, OptSpecifier: OPT_ffp_contract, Value: "fast");
3952 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On)
3953 GenerateArg(Consumer, OptSpecifier: OPT_ffp_contract, Value: "on");
3954 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off)
3955 GenerateArg(Consumer, OptSpecifier: OPT_ffp_contract, Value: "off");
3956 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas)
3957 GenerateArg(Consumer, OptSpecifier: OPT_ffp_contract, Value: "fast-honor-pragmas");
3958
3959 for (StringRef Sanitizer : serializeSanitizerKinds(S: Opts.Sanitize))
3960 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_EQ, Value: Sanitizer);
3961 for (StringRef Sanitizer :
3962 serializeSanitizerKinds(S: Opts.UBSanFeatureIgnoredSanitize))
3963 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_ignore_for_ubsan_feature_EQ, Value: Sanitizer);
3964
3965 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'.
3966 for (const std::string &F : Opts.NoSanitizeFiles)
3967 GenerateArg(Consumer, OptSpecifier: OPT_fsanitize_ignorelist_EQ, Value: F);
3968
3969 switch (Opts.getClangABICompat()) {
3970#define ABI_VER_MAJOR_MINOR(Major, Minor) \
3971 case LangOptions::ClangABI::Ver##Major##_##Minor: \
3972 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, #Major "." #Minor); \
3973 break;
3974#define ABI_VER_MAJOR(Major) \
3975 case LangOptions::ClangABI::Ver##Major: \
3976 GenerateArg(Consumer, OPT_fclang_abi_compat_EQ, #Major ".0"); \
3977 break;
3978#define ABI_VER_LATEST(Latest) \
3979 case LangOptions::ClangABI::Latest: \
3980 break;
3981#include "clang/Basic/ABIVersions.def"
3982 }
3983
3984 if (Opts.getSignReturnAddressScope() ==
3985 LangOptions::SignReturnAddressScopeKind::All)
3986 GenerateArg(Consumer, OptSpecifier: OPT_msign_return_address_EQ, Value: "all");
3987 else if (Opts.getSignReturnAddressScope() ==
3988 LangOptions::SignReturnAddressScopeKind::NonLeaf)
3989 GenerateArg(Consumer, OptSpecifier: OPT_msign_return_address_EQ, Value: "non-leaf");
3990
3991 if (Opts.getSignReturnAddressKey() ==
3992 LangOptions::SignReturnAddressKeyKind::BKey)
3993 GenerateArg(Consumer, OptSpecifier: OPT_msign_return_address_key_EQ, Value: "b_key");
3994
3995 if (Opts.CXXABI)
3996 GenerateArg(Consumer, OptSpecifier: OPT_fcxx_abi_EQ,
3997 Value: TargetCXXABI::getSpelling(ABIKind: *Opts.CXXABI));
3998
3999 if (Opts.RelativeCXXABIVTables)
4000 GenerateArg(Consumer, OptSpecifier: OPT_fexperimental_relative_cxx_abi_vtables);
4001 else
4002 GenerateArg(Consumer, OptSpecifier: OPT_fno_experimental_relative_cxx_abi_vtables);
4003
4004 if (Opts.UseTargetPathSeparator)
4005 GenerateArg(Consumer, OptSpecifier: OPT_ffile_reproducible);
4006 else
4007 GenerateArg(Consumer, OptSpecifier: OPT_fno_file_reproducible);
4008
4009 for (const auto &MP : Opts.MacroPrefixMap)
4010 GenerateArg(Consumer, OptSpecifier: OPT_fmacro_prefix_map_EQ, Value: MP.first + "=" + MP.second);
4011
4012 if (!Opts.RandstructSeed.empty())
4013 GenerateArg(Consumer, OptSpecifier: OPT_frandomize_layout_seed_EQ, Value: Opts.RandstructSeed);
4014
4015 if (Opts.AllocTokenMax)
4016 GenerateArg(Consumer, OptSpecifier: OPT_falloc_token_max_EQ,
4017 Value: std::to_string(val: *Opts.AllocTokenMax));
4018
4019 if (Opts.AllocTokenMode) {
4020 StringRef S = llvm::getAllocTokenModeAsString(Mode: *Opts.AllocTokenMode);
4021 GenerateArg(Consumer, OptSpecifier: OPT_falloc_token_mode_EQ, Value: S);
4022 }
4023 // Generate args for matrix types.
4024 if (Opts.MatrixTypes) {
4025 if (Opts.getDefaultMatrixMemoryLayout() ==
4026 LangOptions::MatrixMemoryLayout::MatrixColMajor)
4027 GenerateArg(Consumer, OptSpecifier: OPT_fmatrix_memory_layout_EQ, Value: "column-major");
4028 if (Opts.getDefaultMatrixMemoryLayout() ==
4029 LangOptions::MatrixMemoryLayout::MatrixRowMajor)
4030 GenerateArg(Consumer, OptSpecifier: OPT_fmatrix_memory_layout_EQ, Value: "row-major");
4031 }
4032}
4033
4034bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args,
4035 InputKind IK, const llvm::Triple &T,
4036 std::vector<std::string> &Includes,
4037 DiagnosticsEngine &Diags) {
4038 unsigned NumErrorsBefore = Diags.getNumErrors();
4039
4040 if (IK.getFormat() == InputKind::Precompiled ||
4041 IK.getLanguage() == Language::LLVM_IR ||
4042 IK.getLanguage() == Language::CIR) {
4043 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
4044 // PassManager in BackendUtil.cpp. They need to be initialized no matter
4045 // what the input type is.
4046 if (Args.hasArg(Ids: OPT_fobjc_arc))
4047 Opts.ObjCAutoRefCount = 1;
4048 // PICLevel and PIELevel are needed during code generation and this should
4049 // be set regardless of the input type.
4050 Opts.PICLevel = getLastArgIntValue(Args, Id: OPT_pic_level, Default: 0, Diags);
4051 Opts.PIE = Args.hasArg(Ids: OPT_pic_is_pie);
4052 parseSanitizerKinds(FlagName: "-fsanitize=", Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_EQ),
4053 Diags, S&: Opts.Sanitize);
4054 parseSanitizerKinds(
4055 FlagName: "-fsanitize-ignore-for-ubsan-feature=",
4056 Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_ignore_for_ubsan_feature_EQ), Diags,
4057 S&: Opts.UBSanFeatureIgnoredSanitize);
4058
4059 return Diags.getNumErrors() == NumErrorsBefore;
4060 }
4061
4062 // Other LangOpts are only initialized when the input is not AST or LLVM IR.
4063 // FIXME: Should we really be parsing this for an Language::Asm input?
4064
4065 // FIXME: Cleanup per-file based stuff.
4066 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
4067 if (const Arg *A = Args.getLastArg(Ids: OPT_std_EQ)) {
4068 LangStd = LangStandard::getLangKind(Name: A->getValue());
4069 if (LangStd == LangStandard::lang_unspecified) {
4070 Diags.Report(DiagID: diag::err_drv_invalid_value)
4071 << A->getAsString(Args) << A->getValue();
4072 // Report supported standards with short description.
4073 for (unsigned KindValue = 0;
4074 KindValue != LangStandard::lang_unspecified;
4075 ++KindValue) {
4076 const LangStandard &Std = LangStandard::getLangStandardForKind(
4077 K: static_cast<LangStandard::Kind>(KindValue));
4078 if (IsInputCompatibleWithStandard(IK, S: Std)) {
4079 auto Diag = Diags.Report(DiagID: diag::note_drv_use_standard);
4080 Diag << Std.getName() << Std.getDescription();
4081 unsigned NumAliases = 0;
4082#define LANGSTANDARD(id, name, lang, desc, features, version)
4083#define LANGSTANDARD_ALIAS(id, alias) \
4084 if (KindValue == LangStandard::lang_##id) ++NumAliases;
4085#define LANGSTANDARD_ALIAS_DEPR(id, alias)
4086#include "clang/Basic/LangStandards.def"
4087 Diag << NumAliases;
4088#define LANGSTANDARD(id, name, lang, desc, features, version)
4089#define LANGSTANDARD_ALIAS(id, alias) \
4090 if (KindValue == LangStandard::lang_##id) Diag << alias;
4091#define LANGSTANDARD_ALIAS_DEPR(id, alias)
4092#include "clang/Basic/LangStandards.def"
4093 }
4094 }
4095 } else {
4096 // Valid standard, check to make sure language and standard are
4097 // compatible.
4098 const LangStandard &Std = LangStandard::getLangStandardForKind(K: LangStd);
4099 if (!IsInputCompatibleWithStandard(IK, S: Std)) {
4100 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
4101 << A->getAsString(Args) << GetInputKindName(IK);
4102 }
4103 }
4104 }
4105
4106 // -cl-std only applies for OpenCL language standards.
4107 // Override the -std option in this case.
4108 if (const Arg *A = Args.getLastArg(Ids: OPT_cl_std_EQ)) {
4109 LangStandard::Kind OpenCLLangStd =
4110 llvm::StringSwitch<LangStandard::Kind>(A->getValue())
4111 .Cases(CaseStrings: {"cl", "CL"}, Value: LangStandard::lang_opencl10)
4112 .Cases(CaseStrings: {"cl1.0", "CL1.0"}, Value: LangStandard::lang_opencl10)
4113 .Cases(CaseStrings: {"cl1.1", "CL1.1"}, Value: LangStandard::lang_opencl11)
4114 .Cases(CaseStrings: {"cl1.2", "CL1.2"}, Value: LangStandard::lang_opencl12)
4115 .Cases(CaseStrings: {"cl2.0", "CL2.0"}, Value: LangStandard::lang_opencl20)
4116 .Cases(CaseStrings: {"cl3.0", "CL3.0"}, Value: LangStandard::lang_opencl30)
4117 .Cases(CaseStrings: {"cl3.1", "CL3.1"}, Value: LangStandard::lang_opencl31)
4118 .Cases(CaseStrings: {"clc++", "CLC++"}, Value: LangStandard::lang_openclcpp10)
4119 .Cases(CaseStrings: {"clc++1.0", "CLC++1.0"}, Value: LangStandard::lang_openclcpp10)
4120 .Cases(CaseStrings: {"clc++2021", "CLC++2021"}, Value: LangStandard::lang_openclcpp2021)
4121 .Default(Value: LangStandard::lang_unspecified);
4122
4123 if (OpenCLLangStd == LangStandard::lang_unspecified) {
4124 Diags.Report(DiagID: diag::err_drv_invalid_value)
4125 << A->getAsString(Args) << A->getValue();
4126 }
4127 else
4128 LangStd = OpenCLLangStd;
4129 }
4130
4131 // These need to be parsed now. They are used to set OpenCL defaults.
4132 Opts.IncludeDefaultHeader = Args.hasArg(Ids: OPT_finclude_default_header);
4133 Opts.DeclareOpenCLBuiltins = Args.hasArg(Ids: OPT_fdeclare_opencl_builtins);
4134
4135 LangOptions::setLangDefaults(Opts, Lang: IK.getLanguage(), T, Includes, LangStd);
4136
4137 // The key paths of codegen options defined in Options.td start with
4138 // "LangOpts->". Let's provide the expected variable name and type.
4139 LangOptions *LangOpts = &Opts;
4140
4141#define LANG_OPTION_WITH_MARSHALLING(...) \
4142 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
4143#include "clang/Options/Options.inc"
4144#undef LANG_OPTION_WITH_MARSHALLING
4145
4146 // "Modules semantics" (e.g. cross-translation-unit declaration merging) are
4147 // needed for both Clang (header) modules and C++20 modules, so enable them
4148 // for either.
4149 Opts.Modules = Opts.ClangModules || Opts.CPlusPlusModules;
4150
4151 if (const Arg *A = Args.getLastArg(Ids: OPT_fcf_protection_EQ)) {
4152 StringRef Name = A->getValue();
4153 if (Name == "full") {
4154 Opts.CFProtectionBranch = 1;
4155 Opts.CFProtectionReturn = 1;
4156 } else if (Name == "branch") {
4157 Opts.CFProtectionBranch = 1;
4158 } else if (Name == "return") {
4159 Opts.CFProtectionReturn = 1;
4160 }
4161 }
4162
4163 if (Opts.CFProtectionBranch) {
4164 if (const Arg *A = Args.getLastArg(Ids: OPT_mcf_branch_label_scheme_EQ)) {
4165 const auto Scheme =
4166 llvm::StringSwitch<CFBranchLabelSchemeKind>(A->getValue())
4167#define CF_BRANCH_LABEL_SCHEME(Kind, FlagVal) \
4168 .Case(#FlagVal, CFBranchLabelSchemeKind::Kind)
4169#include "clang/Basic/CFProtectionOptions.def"
4170 .Default(Value: CFBranchLabelSchemeKind::Default);
4171 Opts.setCFBranchLabelScheme(Scheme);
4172 }
4173 }
4174
4175 if ((Args.hasArg(Ids: OPT_fsycl_is_device) || Args.hasArg(Ids: OPT_fsycl_is_host)) &&
4176 !Args.hasArg(Ids: OPT_sycl_std_EQ)) {
4177 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to
4178 // provide -sycl-std=, we want to default it to whatever the default SYCL
4179 // version is. I could not find a way to express this with the options
4180 // tablegen because we still want this value to be SYCL_None when the user
4181 // is not in device or host mode.
4182 Opts.setSYCLVersion(LangOptions::SYCL_Default);
4183 }
4184
4185 if (Opts.ObjC) {
4186 if (Arg *arg = Args.getLastArg(Ids: OPT_fobjc_runtime_EQ)) {
4187 StringRef value = arg->getValue();
4188 if (Opts.ObjCRuntime.tryParse(input: value))
4189 Diags.Report(DiagID: diag::err_drv_unknown_objc_runtime) << value;
4190 }
4191
4192 if (Args.hasArg(Ids: OPT_fobjc_gc_only))
4193 Opts.setGC(LangOptions::GCOnly);
4194 else if (Args.hasArg(Ids: OPT_fobjc_gc))
4195 Opts.setGC(LangOptions::HybridGC);
4196 else if (Args.hasArg(Ids: OPT_fobjc_arc)) {
4197 Opts.ObjCAutoRefCount = 1;
4198 if (!Opts.ObjCRuntime.allowsARC())
4199 Diags.Report(DiagID: diag::err_arc_unsupported_on_runtime);
4200 }
4201
4202 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
4203 // whether the feature is actually enabled. This is predominantly
4204 // determined by -fobjc-runtime, but we allow it to be overridden
4205 // from the command line for testing purposes.
4206 if (Args.hasArg(Ids: OPT_fobjc_runtime_has_weak))
4207 Opts.ObjCWeakRuntime = 1;
4208 else
4209 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
4210
4211 // ObjCWeak determines whether __weak is actually enabled.
4212 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
4213 if (auto weakArg = Args.getLastArg(Ids: OPT_fobjc_weak, Ids: OPT_fno_objc_weak)) {
4214 if (!weakArg->getOption().matches(ID: OPT_fobjc_weak)) {
4215 assert(!Opts.ObjCWeak);
4216 } else if (Opts.getGC() != LangOptions::NonGC) {
4217 Diags.Report(DiagID: diag::err_objc_weak_with_gc);
4218 } else if (!Opts.ObjCWeakRuntime) {
4219 Diags.Report(DiagID: diag::err_objc_weak_unsupported);
4220 } else {
4221 Opts.ObjCWeak = 1;
4222 }
4223 } else if (Opts.ObjCAutoRefCount) {
4224 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
4225 }
4226
4227 if (Args.hasArg(Ids: OPT_fobjc_subscripting_legacy_runtime))
4228 Opts.ObjCSubscriptingLegacyRuntime =
4229 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
4230 }
4231
4232 if (Arg *A = Args.getLastArg(Ids: options::OPT_fgnuc_version_EQ)) {
4233 // Check that the version has 1 to 3 components and the minor and patch
4234 // versions fit in two decimal digits.
4235 VersionTuple GNUCVer;
4236 bool Invalid = GNUCVer.tryParse(string: A->getValue());
4237 unsigned Major = GNUCVer.getMajor();
4238 unsigned Minor = GNUCVer.getMinor().value_or(u: 0);
4239 unsigned Patch = GNUCVer.getSubminor().value_or(u: 0);
4240 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
4241 Diags.Report(DiagID: diag::err_drv_invalid_value)
4242 << A->getAsString(Args) << A->getValue();
4243 }
4244 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch;
4245 }
4246
4247 if (T.isOSAIX() && (Args.hasArg(Ids: OPT_mignore_xcoff_visibility)))
4248 Opts.IgnoreXCOFFVisibility = 1;
4249
4250 if (Args.hasArg(Ids: OPT_ftrapv)) {
4251 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
4252 // Set the handler, if one is specified.
4253 Opts.OverflowHandler =
4254 std::string(Args.getLastArgValue(Id: OPT_ftrapv_handler));
4255 } else if (Args.hasFlag(Pos: OPT_fwrapv, Neg: OPT_fno_wrapv, Default: Opts.MSVCCompat)) {
4256 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
4257 }
4258 if (Args.hasArg(Ids: OPT_fwrapv_pointer))
4259 Opts.PointerOverflowDefined = true;
4260
4261 Opts.MSCompatibilityVersion = 0;
4262 if (const Arg *A = Args.getLastArg(Ids: OPT_fms_compatibility_version)) {
4263 VersionTuple VT;
4264 if (VT.tryParse(string: A->getValue()))
4265 Diags.Report(DiagID: diag::err_drv_invalid_value) << A->getAsString(Args)
4266 << A->getValue();
4267 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
4268 VT.getMinor().value_or(u: 0) * 100000 +
4269 VT.getSubminor().value_or(u: 0);
4270 }
4271
4272 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs
4273 // is specified, or -std is set to a conforming mode.
4274 // Trigraphs are disabled by default in C++17 and C23 onwards.
4275 // For z/OS, trigraphs are enabled by default (without regard to the above).
4276 Opts.Trigraphs =
4277 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17 && !Opts.C23) ||
4278 T.isOSzOS();
4279 Opts.Trigraphs =
4280 Args.hasFlag(Pos: OPT_ftrigraphs, Neg: OPT_fno_trigraphs, Default: Opts.Trigraphs);
4281
4282 Opts.ZOSExt =
4283 Args.hasFlag(Pos: OPT_fzos_extensions, Neg: OPT_fno_zos_extensions, Default: T.isOSzOS());
4284
4285 Opts.Blocks = Args.hasArg(Ids: OPT_fblocks) || (Opts.OpenCL
4286 && Opts.OpenCLVersion == 200);
4287
4288 bool HasConvergentOperations = Opts.isTargetDevice() || Opts.OpenCL ||
4289 Opts.HLSL || T.isAMDGPU() || T.isNVPTX();
4290 Opts.ConvergentFunctions =
4291 Args.hasFlag(Pos: OPT_fconvergent_functions, Neg: OPT_fno_convergent_functions,
4292 Default: HasConvergentOperations);
4293
4294 Opts.NoBuiltin = Args.hasArg(Ids: OPT_fno_builtin) || Opts.Freestanding;
4295 if (!Opts.NoBuiltin)
4296 getAllNoBuiltinFuncValues(Args, Funcs&: Opts.NoBuiltinFuncs);
4297 if (Arg *A = Args.getLastArg(Ids: options::OPT_LongDouble_Group)) {
4298 if (A->getOption().matches(ID: options::OPT_mlong_double_64))
4299 Opts.LongDoubleSize = 64;
4300 else if (A->getOption().matches(ID: options::OPT_mlong_double_80))
4301 Opts.LongDoubleSize = 80;
4302 else if (A->getOption().matches(ID: options::OPT_mlong_double_128))
4303 Opts.LongDoubleSize = 128;
4304 else
4305 Opts.LongDoubleSize = 0;
4306 }
4307 if (Opts.FastRelaxedMath || Opts.CLUnsafeMath)
4308 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
4309
4310 llvm::sort(C&: Opts.ModuleFeatures);
4311
4312 // -mrtd option
4313 if (Arg *A = Args.getLastArg(Ids: OPT_mrtd)) {
4314 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
4315 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
4316 << A->getSpelling() << "-fdefault-calling-conv";
4317 else {
4318 switch (T.getArch()) {
4319 case llvm::Triple::x86:
4320 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
4321 break;
4322 case llvm::Triple::m68k:
4323 Opts.setDefaultCallingConv(LangOptions::DCC_RtdCall);
4324 break;
4325 default:
4326 Diags.Report(DiagID: diag::err_drv_argument_not_allowed_with)
4327 << A->getSpelling() << T.getTriple();
4328 }
4329 }
4330 }
4331
4332 // Check if -fopenmp is specified and set default version to 5.1.
4333 Opts.OpenMP = Args.hasArg(Ids: OPT_fopenmp) ? 51 : 0;
4334 // Check if -fopenmp-simd is specified.
4335 bool IsSimdSpecified =
4336 Args.hasFlag(Pos: options::OPT_fopenmp_simd, Neg: options::OPT_fno_openmp_simd,
4337 /*Default=*/false);
4338 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified;
4339 Opts.OpenMPUseTLS =
4340 Opts.OpenMP && !Args.hasArg(Ids: options::OPT_fnoopenmp_use_tls);
4341 Opts.OpenMPIsTargetDevice =
4342 Opts.OpenMP && Args.hasArg(Ids: options::OPT_fopenmp_is_target_device);
4343 Opts.OpenMPIRBuilder =
4344 Opts.OpenMP && Args.hasArg(Ids: options::OPT_fopenmp_enable_irbuilder);
4345 bool IsTargetSpecified =
4346 Opts.OpenMPIsTargetDevice || Args.hasArg(Ids: options::OPT_offload_targets_EQ);
4347
4348 if (Opts.OpenMP || Opts.OpenMPSimd) {
4349 if (int Version = getLastArgIntValue(
4350 Args, Id: OPT_fopenmp_version_EQ,
4351 Default: (IsSimdSpecified || IsTargetSpecified) ? 51 : Opts.OpenMP, Diags))
4352 Opts.OpenMP = Version;
4353 // Provide diagnostic when a given target is not expected to be an OpenMP
4354 // device or host.
4355 if (!Opts.OpenMPIsTargetDevice) {
4356 switch (T.getArch()) {
4357 default:
4358 break;
4359 // Add unsupported host targets here:
4360 case llvm::Triple::nvptx:
4361 case llvm::Triple::nvptx64:
4362 Diags.Report(DiagID: diag::err_drv_omp_host_target_not_supported) << T.str();
4363 break;
4364 }
4365 }
4366 }
4367
4368 // Set the flag to prevent the implementation from emitting device exception
4369 // handling code for those requiring so.
4370 if ((Opts.OpenMPIsTargetDevice && T.isGPU()) || Opts.OpenCLCPlusPlus) {
4371
4372 Opts.Exceptions = 0;
4373 Opts.CXXExceptions = 0;
4374 }
4375 if (Opts.OpenMPIsTargetDevice && T.isNVPTX()) {
4376 Opts.OpenMPCUDANumSMs =
4377 getLastArgIntValue(Args, Id: options::OPT_fopenmp_cuda_number_of_sm_EQ,
4378 Default: Opts.OpenMPCUDANumSMs, Diags);
4379 Opts.OpenMPCUDABlocksPerSM =
4380 getLastArgIntValue(Args, Id: options::OPT_fopenmp_cuda_blocks_per_sm_EQ,
4381 Default: Opts.OpenMPCUDABlocksPerSM, Diags);
4382 }
4383
4384 // Set the value of the debugging flag used in the new offloading device RTL.
4385 // Set either by a specific value or to a default if not specified.
4386 if (Opts.OpenMPIsTargetDevice && (Args.hasArg(Ids: OPT_fopenmp_target_debug) ||
4387 Args.hasArg(Ids: OPT_fopenmp_target_debug_EQ))) {
4388 Opts.OpenMPTargetDebug = getLastArgIntValue(
4389 Args, Id: OPT_fopenmp_target_debug_EQ, Default: Opts.OpenMPTargetDebug, Diags);
4390 if (!Opts.OpenMPTargetDebug && Args.hasArg(Ids: OPT_fopenmp_target_debug))
4391 Opts.OpenMPTargetDebug = 1;
4392 }
4393
4394 if (Opts.OpenMPIsTargetDevice) {
4395 if (Args.hasArg(Ids: OPT_fopenmp_assume_teams_oversubscription))
4396 Opts.OpenMPTeamSubscription = true;
4397 if (Args.hasArg(Ids: OPT_fopenmp_assume_threads_oversubscription))
4398 Opts.OpenMPThreadSubscription = true;
4399 }
4400
4401 // Get the OpenMP target triples if any.
4402 if (Arg *A = Args.getLastArg(Ids: options::OPT_offload_targets_EQ)) {
4403 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit };
4404 auto getArchPtrSize = [](const llvm::Triple &T) {
4405 if (T.isArch16Bit())
4406 return Arch16Bit;
4407 if (T.isArch32Bit())
4408 return Arch32Bit;
4409 assert(T.isArch64Bit() && "Expected 64-bit architecture");
4410 return Arch64Bit;
4411 };
4412
4413 for (unsigned i = 0; i < A->getNumValues(); ++i) {
4414 llvm::Triple TT(A->getValue(N: i));
4415
4416 if (TT.getArch() == llvm::Triple::UnknownArch ||
4417 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() ||
4418 TT.getArch() == llvm::Triple::spirv64 ||
4419 TT.getArch() == llvm::Triple::systemz ||
4420 TT.getArch() == llvm::Triple::loongarch64 ||
4421 TT.getArch() == llvm::Triple::nvptx ||
4422 TT.getArch() == llvm::Triple::nvptx64 || TT.isAMDGCN() ||
4423 TT.getArch() == llvm::Triple::x86 ||
4424 TT.getArch() == llvm::Triple::x86_64))
4425 Diags.Report(DiagID: diag::err_drv_invalid_omp_target) << A->getValue(N: i);
4426 else if (getArchPtrSize(T) != getArchPtrSize(TT))
4427 Diags.Report(DiagID: diag::err_drv_incompatible_omp_arch)
4428 << A->getValue(N: i) << T.str();
4429 else
4430 Opts.OMPTargetTriples.push_back(x: TT);
4431 }
4432 }
4433
4434 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options
4435 Opts.OpenMPCUDAMode = Opts.OpenMPIsTargetDevice &&
4436 (T.isNVPTX() || T.isAMDGCN()) &&
4437 Args.hasArg(Ids: options::OPT_fopenmp_cuda_mode);
4438
4439 // OpenACC Configuration.
4440 if (Args.hasArg(Ids: options::OPT_fopenacc))
4441 Opts.OpenACC = true;
4442
4443 if (Arg *A = Args.getLastArg(Ids: OPT_ffp_contract)) {
4444 StringRef Val = A->getValue();
4445 if (Val == "fast")
4446 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
4447 else if (Val == "on")
4448 Opts.setDefaultFPContractMode(LangOptions::FPM_On);
4449 else if (Val == "off")
4450 Opts.setDefaultFPContractMode(LangOptions::FPM_Off);
4451 else if (Val == "fast-honor-pragmas")
4452 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas);
4453 else
4454 Diags.Report(DiagID: diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
4455 }
4456
4457 if (auto *A =
4458 Args.getLastArg(Ids: OPT_fsanitize_undefined_ignore_overflow_pattern_EQ)) {
4459 for (int i = 0, n = A->getNumValues(); i != n; ++i) {
4460 Opts.OverflowPatternExclusionMask |=
4461 llvm::StringSwitch<unsigned>(A->getValue(N: i))
4462 .Case(S: "none", Value: LangOptionsBase::None)
4463 .Case(S: "all", Value: LangOptionsBase::All)
4464 .Case(S: "add-unsigned-overflow-test",
4465 Value: LangOptionsBase::AddUnsignedOverflowTest)
4466 .Case(S: "add-signed-overflow-test",
4467 Value: LangOptionsBase::AddSignedOverflowTest)
4468 .Case(S: "negated-unsigned-const", Value: LangOptionsBase::NegUnsignedConst)
4469 .Case(S: "unsigned-post-decr-while",
4470 Value: LangOptionsBase::PostDecrInWhile)
4471 .Default(Value: 0);
4472 }
4473 }
4474
4475 // Parse -fsanitize= arguments.
4476 parseSanitizerKinds(FlagName: "-fsanitize=", Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_EQ),
4477 Diags, S&: Opts.Sanitize);
4478 parseSanitizerKinds(
4479 FlagName: "-fsanitize-ignore-for-ubsan-feature=",
4480 Sanitizers: Args.getAllArgValues(Id: OPT_fsanitize_ignore_for_ubsan_feature_EQ), Diags,
4481 S&: Opts.UBSanFeatureIgnoredSanitize);
4482 Opts.NoSanitizeFiles = Args.getAllArgValues(Id: OPT_fsanitize_ignorelist_EQ);
4483 std::vector<std::string> systemIgnorelists =
4484 Args.getAllArgValues(Id: OPT_fsanitize_system_ignorelist_EQ);
4485 Opts.NoSanitizeFiles.insert(position: Opts.NoSanitizeFiles.end(),
4486 first: systemIgnorelists.begin(),
4487 last: systemIgnorelists.end());
4488
4489 if (Arg *A = Args.getLastArg(Ids: OPT_fclang_abi_compat_EQ)) {
4490 Opts.setClangABICompat(LangOptions::ClangABI::Latest);
4491
4492 StringRef Ver = A->getValue();
4493 std::pair<StringRef, StringRef> VerParts = Ver.split(Separator: '.');
4494 int Major, Minor = 0;
4495
4496 // Check the version number is valid: either 3.x (0 <= x <= 9) or
4497 // y or y.0 (4 <= y <= current version).
4498 if (!VerParts.first.starts_with(Prefix: "0") &&
4499 !VerParts.first.getAsInteger(Radix: 10, Result&: Major) && 3 <= Major &&
4500 Major <= MAX_CLANG_ABI_COMPAT_VERSION &&
4501 (Major == 3
4502 ? VerParts.second.size() == 1 &&
4503 !VerParts.second.getAsInteger(Radix: 10, Result&: Minor)
4504 : VerParts.first.size() == Ver.size() || VerParts.second == "0")) {
4505 // Got a valid version number.
4506#define ABI_VER_MAJOR_MINOR(Major_, Minor_) \
4507 if (std::tuple(Major, Minor) <= std::tuple(Major_, Minor_)) \
4508 Opts.setClangABICompat(LangOptions::ClangABI::Ver##Major_##_##Minor_); \
4509 else
4510#define ABI_VER_MAJOR(Major_) \
4511 if (Major <= Major_) \
4512 Opts.setClangABICompat(LangOptions::ClangABI::Ver##Major_); \
4513 else
4514#define ABI_VER_LATEST(Latest) \
4515 { /* Equivalent to latest version - do nothing */ \
4516 }
4517#include "clang/Basic/ABIVersions.def"
4518 } else if (Ver != "latest") {
4519 Diags.Report(DiagID: diag::err_drv_invalid_value)
4520 << A->getAsString(Args) << A->getValue();
4521 }
4522 }
4523
4524 if (Arg *A = Args.getLastArg(Ids: OPT_msign_return_address_EQ)) {
4525 StringRef SignScope = A->getValue();
4526
4527 if (SignScope.equals_insensitive(RHS: "none"))
4528 Opts.setSignReturnAddressScope(
4529 LangOptions::SignReturnAddressScopeKind::None);
4530 else if (SignScope.equals_insensitive(RHS: "all"))
4531 Opts.setSignReturnAddressScope(
4532 LangOptions::SignReturnAddressScopeKind::All);
4533 else if (SignScope.equals_insensitive(RHS: "non-leaf"))
4534 Opts.setSignReturnAddressScope(
4535 LangOptions::SignReturnAddressScopeKind::NonLeaf);
4536 else
4537 Diags.Report(DiagID: diag::err_drv_invalid_value)
4538 << A->getAsString(Args) << SignScope;
4539
4540 if (Arg *A = Args.getLastArg(Ids: OPT_msign_return_address_key_EQ)) {
4541 StringRef SignKey = A->getValue();
4542 if (!SignScope.empty() && !SignKey.empty()) {
4543 if (SignKey == "a_key")
4544 Opts.setSignReturnAddressKey(
4545 LangOptions::SignReturnAddressKeyKind::AKey);
4546 else if (SignKey == "b_key")
4547 Opts.setSignReturnAddressKey(
4548 LangOptions::SignReturnAddressKeyKind::BKey);
4549 else
4550 Diags.Report(DiagID: diag::err_drv_invalid_value)
4551 << A->getAsString(Args) << SignKey;
4552 }
4553 }
4554 }
4555
4556 // The value can be empty, which indicates the system default should be used.
4557 StringRef CXXABI = Args.getLastArgValue(Id: OPT_fcxx_abi_EQ);
4558 if (!CXXABI.empty()) {
4559 if (!TargetCXXABI::isABI(Name: CXXABI)) {
4560 Diags.Report(DiagID: diag::err_invalid_cxx_abi) << CXXABI;
4561 } else {
4562 auto Kind = TargetCXXABI::getKind(Name: CXXABI);
4563 if (!TargetCXXABI::isSupportedCXXABI(T, Kind))
4564 Diags.Report(DiagID: diag::err_unsupported_cxx_abi) << CXXABI << T.str();
4565 else
4566 Opts.CXXABI = Kind;
4567 }
4568 }
4569
4570 Opts.RelativeCXXABIVTables =
4571 Args.hasFlag(Pos: options::OPT_fexperimental_relative_cxx_abi_vtables,
4572 Neg: options::OPT_fno_experimental_relative_cxx_abi_vtables,
4573 Default: TargetCXXABI::usesRelativeVTables(T));
4574
4575 // RTTI is on by default.
4576 bool HasRTTI = !Args.hasArg(Ids: options::OPT_fno_rtti);
4577 Opts.OmitVTableRTTI =
4578 Args.hasFlag(Pos: options::OPT_fexperimental_omit_vtable_rtti,
4579 Neg: options::OPT_fno_experimental_omit_vtable_rtti, Default: false);
4580 if (Opts.OmitVTableRTTI && HasRTTI)
4581 Diags.Report(DiagID: diag::err_drv_using_omit_rtti_component_without_no_rtti);
4582
4583 for (const auto &A : Args.getAllArgValues(Id: OPT_fmacro_prefix_map_EQ)) {
4584 auto Split = StringRef(A).split(Separator: '=');
4585 Opts.MacroPrefixMap.insert(
4586 x: {std::string(Split.first), std::string(Split.second)});
4587 }
4588
4589 Opts.UseTargetPathSeparator =
4590 !Args.getLastArg(Ids: OPT_fno_file_reproducible) &&
4591 (Args.getLastArg(Ids: OPT_ffile_compilation_dir_EQ) ||
4592 Args.getLastArg(Ids: OPT_fmacro_prefix_map_EQ) ||
4593 Args.getLastArg(Ids: OPT_ffile_reproducible));
4594
4595 // Error if -mvscale-min is unbounded.
4596 if (Arg *A = Args.getLastArg(Ids: options::OPT_mvscale_min_EQ)) {
4597 unsigned VScaleMin;
4598 if (StringRef(A->getValue()).getAsInteger(Radix: 10, Result&: VScaleMin) || VScaleMin == 0)
4599 Diags.Report(DiagID: diag::err_cc1_unbounded_vscale_min);
4600 }
4601 if (Arg *A = Args.getLastArg(Ids: options::OPT_mvscale_streaming_min_EQ)) {
4602 unsigned VScaleMin;
4603 if (StringRef(A->getValue()).getAsInteger(Radix: 10, Result&: VScaleMin) || VScaleMin == 0)
4604 Diags.Report(DiagID: diag::err_cc1_unbounded_vscale_min);
4605 }
4606
4607 if (const Arg *A = Args.getLastArg(Ids: OPT_frandomize_layout_seed_file_EQ)) {
4608 std::ifstream SeedFile(A->getValue(N: 0));
4609
4610 if (!SeedFile.is_open())
4611 Diags.Report(DiagID: diag::err_drv_cannot_open_randomize_layout_seed_file)
4612 << A->getValue(N: 0);
4613
4614 std::getline(is&: SeedFile, str&: Opts.RandstructSeed);
4615 }
4616
4617 if (const Arg *A = Args.getLastArg(Ids: OPT_frandomize_layout_seed_EQ))
4618 Opts.RandstructSeed = A->getValue(N: 0);
4619
4620 if (const auto *Arg = Args.getLastArg(Ids: options::OPT_falloc_token_max_EQ)) {
4621 StringRef S = Arg->getValue();
4622 uint64_t Value = 0;
4623 if (S.getAsInteger(Radix: 0, Result&: Value))
4624 Diags.Report(DiagID: diag::err_drv_invalid_value) << Arg->getAsString(Args) << S;
4625 else
4626 Opts.AllocTokenMax = Value;
4627 }
4628
4629 if (const auto *Arg = Args.getLastArg(Ids: options::OPT_falloc_token_mode_EQ)) {
4630 StringRef S = Arg->getValue();
4631 if (auto Mode = getAllocTokenModeFromString(Name: S))
4632 Opts.AllocTokenMode = Mode;
4633 else
4634 Diags.Report(DiagID: diag::err_drv_invalid_value) << Arg->getAsString(Args) << S;
4635 }
4636
4637 // Enable options for matrix types.
4638 if (Opts.MatrixTypes) {
4639 if (const Arg *A = Args.getLastArg(Ids: OPT_fmatrix_memory_layout_EQ)) {
4640 StringRef ClangValue = A->getValue();
4641 if (ClangValue == "row-major")
4642 Opts.setDefaultMatrixMemoryLayout(
4643 LangOptions::MatrixMemoryLayout::MatrixRowMajor);
4644 else
4645 Opts.setDefaultMatrixMemoryLayout(
4646 LangOptions::MatrixMemoryLayout::MatrixColMajor);
4647
4648 for (Arg *A : Args.filtered(Ids: options::OPT_mllvm)) {
4649 StringRef OptValue = A->getValue();
4650 if (OptValue.consume_front(Prefix: "-matrix-default-layout=") &&
4651 ClangValue != OptValue)
4652 Diags.Report(DiagID: diag::err_conflicting_matrix_layout_flags)
4653 << ClangValue << OptValue;
4654 }
4655 }
4656 }
4657
4658 // Validate options for HLSL
4659 if (Opts.HLSL) {
4660 // TODO: Revisit restricting SPIR-V to logical once we've figured out how to
4661 // handle PhysicalStorageBuffer64 memory model
4662 if (T.isDXIL() || T.isSPIRVLogical()) {
4663 enum { ShaderModel, VulkanEnv, ShaderStage };
4664 enum { OS, Environment };
4665
4666 int ExpectedOS = T.isSPIRVLogical() ? VulkanEnv : ShaderModel;
4667
4668 if (T.getOSName().empty()) {
4669 Diags.Report(DiagID: diag::err_drv_hlsl_bad_shader_required_in_target)
4670 << ExpectedOS << OS << T.str();
4671 } else if (T.getEnvironmentName().empty()) {
4672 Diags.Report(DiagID: diag::err_drv_hlsl_bad_shader_required_in_target)
4673 << ShaderStage << Environment << T.str();
4674 } else if (!T.isShaderStageEnvironment()) {
4675 Diags.Report(DiagID: diag::err_drv_hlsl_bad_shader_unsupported)
4676 << ShaderStage << T.getEnvironmentName() << T.str();
4677 }
4678
4679 if (T.isDXIL()) {
4680 if (!T.isShaderModelOS() || T.getOSVersion() == VersionTuple(0)) {
4681 Diags.Report(DiagID: diag::err_drv_hlsl_bad_shader_unsupported)
4682 << ShaderModel << T.getOSName() << T.str();
4683 }
4684 // Validate that if fnative-half-type is given, that
4685 // the language standard is at least hlsl2018, and that
4686 // the target shader model is at least 6.2.
4687 if (Args.getLastArg(Ids: OPT_fnative_half_type) ||
4688 Args.getLastArg(Ids: OPT_fnative_int16_type)) {
4689 const LangStandard &Std =
4690 LangStandard::getLangStandardForKind(K: Opts.LangStd);
4691 if (!(Opts.LangStd >= LangStandard::lang_hlsl2018 &&
4692 T.getOSVersion() >= VersionTuple(6, 2)))
4693 Diags.Report(DiagID: diag::err_drv_hlsl_16bit_types_unsupported)
4694 << "-enable-16bit-types" << true << Std.getName()
4695 << T.getOSVersion().getAsString();
4696 }
4697 } else if (T.isSPIRVLogical()) {
4698 if (!T.isVulkanOS() || T.getVulkanVersion() == VersionTuple(0)) {
4699 Diags.Report(DiagID: diag::err_drv_hlsl_bad_shader_unsupported)
4700 << VulkanEnv << T.getOSName() << T.str();
4701 }
4702 if (Args.getLastArg(Ids: OPT_fnative_half_type) ||
4703 Args.getLastArg(Ids: OPT_fnative_int16_type)) {
4704 const char *Str = Args.getLastArg(Ids: OPT_fnative_half_type)
4705 ? "-fnative-half-type"
4706 : "-fnative-int16-type";
4707 const LangStandard &Std =
4708 LangStandard::getLangStandardForKind(K: Opts.LangStd);
4709 if (!(Opts.LangStd >= LangStandard::lang_hlsl2018))
4710 Diags.Report(DiagID: diag::err_drv_hlsl_16bit_types_unsupported)
4711 << Str << false << Std.getName();
4712 }
4713 } else {
4714 llvm_unreachable("expected DXIL or SPIR-V target");
4715 }
4716 } else
4717 Diags.Report(DiagID: diag::err_drv_hlsl_unsupported_target) << T.str();
4718
4719 if (Opts.LangStd < LangStandard::lang_hlsl202x) {
4720 const LangStandard &Requested =
4721 LangStandard::getLangStandardForKind(K: Opts.LangStd);
4722 const LangStandard &Recommended =
4723 LangStandard::getLangStandardForKind(K: LangStandard::lang_hlsl202x);
4724 Diags.Report(DiagID: diag::warn_hlsl_langstd_minimal)
4725 << Requested.getName() << Recommended.getName();
4726 }
4727 }
4728
4729 return Diags.getNumErrors() == NumErrorsBefore;
4730}
4731
4732static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
4733 switch (Action) {
4734 case frontend::ASTDeclList:
4735 case frontend::ASTDump:
4736 case frontend::ASTPrint:
4737 case frontend::ASTView:
4738 case frontend::EmitAssembly:
4739 case frontend::EmitBC:
4740 case frontend::EmitCIR:
4741 case frontend::EmitHTML:
4742 case frontend::EmitLLVM:
4743 case frontend::EmitLLVMOnly:
4744 case frontend::EmitCodeGenOnly:
4745 case frontend::EmitObj:
4746 case frontend::ExtractAPI:
4747 case frontend::FixIt:
4748 case frontend::GenerateModule:
4749 case frontend::GenerateModuleInterface:
4750 case frontend::GenerateReducedModuleInterface:
4751 case frontend::GenerateHeaderUnit:
4752 case frontend::GeneratePCH:
4753 case frontend::GenerateInterfaceStubs:
4754 case frontend::ParseSyntaxOnly:
4755 case frontend::ModuleFileInfo:
4756 case frontend::VerifyPCH:
4757 case frontend::PluginAction:
4758 case frontend::RewriteObjC:
4759 case frontend::RewriteTest:
4760 case frontend::RunAnalysis:
4761 return false;
4762
4763 case frontend::DumpCompilerOptions:
4764 case frontend::DumpRawTokens:
4765 case frontend::DumpTokens:
4766 case frontend::InitOnly:
4767 case frontend::PrintPreamble:
4768 case frontend::PrintPreprocessedInput:
4769 case frontend::RewriteMacros:
4770 case frontend::RunPreprocessorOnly:
4771 case frontend::PrintDependencyDirectivesSourceMinimizerOutput:
4772 return true;
4773 }
4774 llvm_unreachable("invalid frontend action");
4775}
4776
4777static bool isCodeGenAction(frontend::ActionKind Action) {
4778 switch (Action) {
4779 case frontend::EmitAssembly:
4780 case frontend::EmitBC:
4781 case frontend::EmitCIR:
4782 case frontend::EmitHTML:
4783 case frontend::EmitLLVM:
4784 case frontend::EmitLLVMOnly:
4785 case frontend::EmitCodeGenOnly:
4786 case frontend::EmitObj:
4787 case frontend::GenerateModule:
4788 case frontend::GenerateModuleInterface:
4789 case frontend::GenerateReducedModuleInterface:
4790 case frontend::GenerateHeaderUnit:
4791 case frontend::GeneratePCH:
4792 case frontend::GenerateInterfaceStubs:
4793 return true;
4794 case frontend::ASTDeclList:
4795 case frontend::ASTDump:
4796 case frontend::ASTPrint:
4797 case frontend::ASTView:
4798 case frontend::ExtractAPI:
4799 case frontend::FixIt:
4800 case frontend::ParseSyntaxOnly:
4801 case frontend::ModuleFileInfo:
4802 case frontend::VerifyPCH:
4803 case frontend::PluginAction:
4804 case frontend::RewriteObjC:
4805 case frontend::RewriteTest:
4806 case frontend::RunAnalysis:
4807 case frontend::DumpCompilerOptions:
4808 case frontend::DumpRawTokens:
4809 case frontend::DumpTokens:
4810 case frontend::InitOnly:
4811 case frontend::PrintPreamble:
4812 case frontend::PrintPreprocessedInput:
4813 case frontend::RewriteMacros:
4814 case frontend::RunPreprocessorOnly:
4815 case frontend::PrintDependencyDirectivesSourceMinimizerOutput:
4816 return false;
4817 }
4818 llvm_unreachable("invalid frontend action");
4819}
4820
4821static void GeneratePreprocessorArgs(const PreprocessorOptions &Opts,
4822 ArgumentConsumer Consumer,
4823 const LangOptions &LangOpts,
4824 const FrontendOptions &FrontendOpts,
4825 const CodeGenOptions &CodeGenOpts) {
4826 const PreprocessorOptions *PreprocessorOpts = &Opts;
4827
4828#define PREPROCESSOR_OPTION_WITH_MARSHALLING(...) \
4829 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
4830#include "clang/Options/Options.inc"
4831#undef PREPROCESSOR_OPTION_WITH_MARSHALLING
4832
4833 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate)
4834 GenerateArg(Consumer, OptSpecifier: OPT_pch_through_hdrstop_use);
4835
4836 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn)
4837 GenerateArg(Consumer, OptSpecifier: OPT_error_on_deserialized_pch_decl, Value: D);
4838
4839 if (Opts.PrecompiledPreambleBytes != std::make_pair(x: 0u, y: false))
4840 GenerateArg(Consumer, OptSpecifier: OPT_preamble_bytes_EQ,
4841 Value: Twine(Opts.PrecompiledPreambleBytes.first) + "," +
4842 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"));
4843
4844 for (const auto &M : Opts.Macros) {
4845 // Don't generate __CET__ macro definitions. They are implied by the
4846 // -fcf-protection option that is generated elsewhere.
4847 if (M.first == "__CET__=1" && !M.second &&
4848 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch)
4849 continue;
4850 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn &&
4851 !CodeGenOpts.CFProtectionBranch)
4852 continue;
4853 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn &&
4854 CodeGenOpts.CFProtectionBranch)
4855 continue;
4856
4857 GenerateArg(Consumer, OptSpecifier: M.second ? OPT_U : OPT_D, Value: M.first);
4858 }
4859
4860 for (const auto &I : Opts.Includes) {
4861 // Don't generate OpenCL includes. They are implied by other flags that are
4862 // generated elsewhere.
4863 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader &&
4864 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") ||
4865 I == "opencl-c.h"))
4866 continue;
4867 // Don't generate HLSL includes. They are implied by other flags that are
4868 // generated elsewhere.
4869 if (LangOpts.HLSL && I == "hlsl.h")
4870 continue;
4871
4872 GenerateArg(Consumer, OptSpecifier: OPT_include, Value: I);
4873 }
4874
4875 for (const auto &CI : Opts.ChainedIncludes)
4876 GenerateArg(Consumer, OptSpecifier: OPT_chain_include, Value: CI);
4877
4878 for (const auto &RF : Opts.RemappedFiles)
4879 GenerateArg(Consumer, OptSpecifier: OPT_remap_file, Value: RF.first + ";" + RF.second);
4880
4881 if (Opts.SourceDateEpoch)
4882 GenerateArg(Consumer, OptSpecifier: OPT_source_date_epoch, Value: Twine(*Opts.SourceDateEpoch));
4883
4884 if (Opts.DefineTargetOSMacros)
4885 GenerateArg(Consumer, OptSpecifier: OPT_fdefine_target_os_macros);
4886
4887 for (const auto &EmbedEntry : Opts.EmbedEntries)
4888 GenerateArg(Consumer, OptSpecifier: OPT_embed_dir_EQ, Value: EmbedEntry);
4889
4890 // Don't handle LexEditorPlaceholders. It is implied by the action that is
4891 // generated elsewhere.
4892}
4893
4894static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
4895 DiagnosticsEngine &Diags,
4896 frontend::ActionKind Action,
4897 const FrontendOptions &FrontendOpts) {
4898 unsigned NumErrorsBefore = Diags.getNumErrors();
4899
4900 PreprocessorOptions *PreprocessorOpts = &Opts;
4901
4902#define PREPROCESSOR_OPTION_WITH_MARSHALLING(...) \
4903 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
4904#include "clang/Options/Options.inc"
4905#undef PREPROCESSOR_OPTION_WITH_MARSHALLING
4906
4907 Opts.PCHWithHdrStop = Args.hasArg(Ids: OPT_pch_through_hdrstop_create) ||
4908 Args.hasArg(Ids: OPT_pch_through_hdrstop_use);
4909
4910 for (const auto *A : Args.filtered(Ids: OPT_error_on_deserialized_pch_decl))
4911 Opts.DeserializedPCHDeclsToErrorOn.insert(x: A->getValue());
4912
4913 if (const Arg *A = Args.getLastArg(Ids: OPT_preamble_bytes_EQ)) {
4914 StringRef Value(A->getValue());
4915 size_t Comma = Value.find(C: ',');
4916 unsigned Bytes = 0;
4917 unsigned EndOfLine = 0;
4918
4919 if (Comma == StringRef::npos ||
4920 Value.substr(Start: 0, N: Comma).getAsInteger(Radix: 10, Result&: Bytes) ||
4921 Value.substr(Start: Comma + 1).getAsInteger(Radix: 10, Result&: EndOfLine))
4922 Diags.Report(DiagID: diag::err_drv_preamble_format);
4923 else {
4924 Opts.PrecompiledPreambleBytes.first = Bytes;
4925 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
4926 }
4927 }
4928
4929 // Add macros from the command line.
4930 for (const auto *A : Args.filtered(Ids: OPT_D, Ids: OPT_U)) {
4931 if (A->getOption().matches(ID: OPT_D))
4932 Opts.addMacroDef(Name: A->getValue());
4933 else
4934 Opts.addMacroUndef(Name: A->getValue());
4935 }
4936
4937 // Add the ordered list of -includes.
4938 for (const auto *A : Args.filtered(Ids: OPT_include))
4939 Opts.Includes.emplace_back(args: A->getValue());
4940
4941 for (const auto *A : Args.filtered(Ids: OPT_chain_include))
4942 Opts.ChainedIncludes.emplace_back(args: A->getValue());
4943
4944 for (const auto *A : Args.filtered(Ids: OPT_remap_file)) {
4945 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(Separator: ';');
4946
4947 if (Split.second.empty()) {
4948 Diags.Report(DiagID: diag::err_drv_invalid_remap_file) << A->getAsString(Args);
4949 continue;
4950 }
4951
4952 Opts.addRemappedFile(From: Split.first, To: Split.second);
4953 }
4954
4955 if (const Arg *A = Args.getLastArg(Ids: OPT_source_date_epoch)) {
4956 StringRef Epoch = A->getValue();
4957 // SOURCE_DATE_EPOCH, if specified, must be a non-negative decimal integer.
4958 // On time64 systems, pick 253402300799 (the UNIX timestamp of
4959 // 9999-12-31T23:59:59Z) as the upper bound.
4960 const uint64_t MaxTimestamp =
4961 std::min<uint64_t>(a: std::numeric_limits<time_t>::max(), b: 253402300799);
4962 uint64_t V;
4963 if (Epoch.getAsInteger(Radix: 10, Result&: V) || V > MaxTimestamp) {
4964 Diags.Report(DiagID: diag::err_fe_invalid_source_date_epoch)
4965 << Epoch << MaxTimestamp;
4966 } else {
4967 Opts.SourceDateEpoch = V;
4968 }
4969 }
4970
4971 for (const auto *A : Args.filtered(Ids: OPT_embed_dir_EQ)) {
4972 StringRef Val = A->getValue();
4973 Opts.EmbedEntries.push_back(x: std::string(Val));
4974 }
4975
4976 // Always avoid lexing editor placeholders when we're just running the
4977 // preprocessor as we never want to emit the
4978 // "editor placeholder in source file" error in PP only mode.
4979 if (isStrictlyPreprocessorAction(Action))
4980 Opts.LexEditorPlaceholders = false;
4981
4982 Opts.DefineTargetOSMacros =
4983 Args.hasFlag(Pos: OPT_fdefine_target_os_macros,
4984 Neg: OPT_fno_define_target_os_macros, Default: Opts.DefineTargetOSMacros);
4985
4986 return Diags.getNumErrors() == NumErrorsBefore;
4987}
4988
4989static void
4990GeneratePreprocessorOutputArgs(const PreprocessorOutputOptions &Opts,
4991 ArgumentConsumer Consumer,
4992 frontend::ActionKind Action) {
4993 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts;
4994
4995#define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING(...) \
4996 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
4997#include "clang/Options/Options.inc"
4998#undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING
4999
5000 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP;
5001 if (Generate_dM)
5002 GenerateArg(Consumer, OptSpecifier: OPT_dM);
5003 if (!Generate_dM && Opts.ShowMacros)
5004 GenerateArg(Consumer, OptSpecifier: OPT_dD);
5005 if (Opts.DirectivesOnly)
5006 GenerateArg(Consumer, OptSpecifier: OPT_fdirectives_only);
5007}
5008
5009static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
5010 ArgList &Args, DiagnosticsEngine &Diags,
5011 frontend::ActionKind Action) {
5012 unsigned NumErrorsBefore = Diags.getNumErrors();
5013
5014 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts;
5015
5016#define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING(...) \
5017 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
5018#include "clang/Options/Options.inc"
5019#undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING
5020
5021 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(Ids: OPT_dM);
5022 Opts.ShowMacros = Args.hasArg(Ids: OPT_dM) || Args.hasArg(Ids: OPT_dD);
5023 Opts.DirectivesOnly = Args.hasArg(Ids: OPT_fdirectives_only);
5024
5025 return Diags.getNumErrors() == NumErrorsBefore;
5026}
5027
5028static void GenerateTargetArgs(const TargetOptions &Opts,
5029 ArgumentConsumer Consumer) {
5030 const TargetOptions *TargetOpts = &Opts;
5031#define TARGET_OPTION_WITH_MARSHALLING(...) \
5032 GENERATE_OPTION_WITH_MARSHALLING(Consumer, __VA_ARGS__)
5033#include "clang/Options/Options.inc"
5034#undef TARGET_OPTION_WITH_MARSHALLING
5035
5036 if (!Opts.SDKVersion.empty())
5037 GenerateArg(Consumer, OptSpecifier: OPT_target_sdk_version_EQ,
5038 Value: Opts.SDKVersion.getAsString());
5039 if (!Opts.DarwinTargetVariantSDKVersion.empty())
5040 GenerateArg(Consumer, OptSpecifier: OPT_darwin_target_variant_sdk_version_EQ,
5041 Value: Opts.DarwinTargetVariantSDKVersion.getAsString());
5042
5043 // Generate AMDGPU xnack and sramecc flags.
5044 if (Opts.AMDGPUXnackState == TargetOptions::AMDGPUFeatureState::Enabled)
5045 GenerateArg(Consumer, OptSpecifier: OPT_mxnack);
5046 else if (Opts.AMDGPUXnackState == TargetOptions::AMDGPUFeatureState::Disabled)
5047 GenerateArg(Consumer, OptSpecifier: OPT_mno_xnack);
5048
5049 if (Opts.AMDGPUSramEccState == TargetOptions::AMDGPUFeatureState::Enabled)
5050 GenerateArg(Consumer, OptSpecifier: OPT_msramecc);
5051 else if (Opts.AMDGPUSramEccState ==
5052 TargetOptions::AMDGPUFeatureState::Disabled)
5053 GenerateArg(Consumer, OptSpecifier: OPT_mno_sramecc);
5054}
5055
5056static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
5057 DiagnosticsEngine &Diags) {
5058 unsigned NumErrorsBefore = Diags.getNumErrors();
5059
5060 TargetOptions *TargetOpts = &Opts;
5061
5062#define TARGET_OPTION_WITH_MARSHALLING(...) \
5063 PARSE_OPTION_WITH_MARSHALLING(Args, Diags, __VA_ARGS__)
5064#include "clang/Options/Options.inc"
5065#undef TARGET_OPTION_WITH_MARSHALLING
5066
5067 if (Arg *A = Args.getLastArg(Ids: options::OPT_target_sdk_version_EQ)) {
5068 llvm::VersionTuple Version;
5069 if (Version.tryParse(string: A->getValue()))
5070 Diags.Report(DiagID: diag::err_drv_invalid_value)
5071 << A->getAsString(Args) << A->getValue();
5072 else
5073 Opts.SDKVersion = Version;
5074 }
5075 if (Arg *A =
5076 Args.getLastArg(Ids: options::OPT_darwin_target_variant_sdk_version_EQ)) {
5077 llvm::VersionTuple Version;
5078 if (Version.tryParse(string: A->getValue()))
5079 Diags.Report(DiagID: diag::err_drv_invalid_value)
5080 << A->getAsString(Args) << A->getValue();
5081 else
5082 Opts.DarwinTargetVariantSDKVersion = Version;
5083 }
5084
5085 if (Arg *A = Args.getLastArg(Ids: options::OPT_mxnack, Ids: options::OPT_mno_xnack)) {
5086 bool IsEnabled = A->getOption().matches(ID: options::OPT_mxnack);
5087 Opts.AMDGPUXnackState = IsEnabled
5088 ? TargetOptions::AMDGPUFeatureState::Enabled
5089 : TargetOptions::AMDGPUFeatureState::Disabled;
5090 }
5091
5092 if (Arg *A =
5093 Args.getLastArg(Ids: options::OPT_msramecc, Ids: options::OPT_mno_sramecc)) {
5094 bool IsEnabled = A->getOption().matches(ID: options::OPT_msramecc);
5095 Opts.AMDGPUSramEccState = IsEnabled
5096 ? TargetOptions::AMDGPUFeatureState::Enabled
5097 : TargetOptions::AMDGPUFeatureState::Disabled;
5098 }
5099
5100 return Diags.getNumErrors() == NumErrorsBefore;
5101}
5102
5103bool CompilerInvocation::CreateFromArgsImpl(
5104 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs,
5105 DiagnosticsEngine &Diags, const char *Argv0) {
5106 unsigned NumErrorsBefore = Diags.getNumErrors();
5107
5108 // Parse the arguments.
5109 const OptTable &Opts = getDriverOptTable();
5110 llvm::opt::Visibility VisibilityMask(options::CC1Option);
5111 unsigned MissingArgIndex, MissingArgCount;
5112 InputArgList Args = Opts.ParseArgs(Args: CommandLineArgs, MissingArgIndex,
5113 MissingArgCount, VisibilityMask);
5114 LangOptions &LangOpts = Res.getLangOpts();
5115
5116 // Check for missing argument error.
5117 if (MissingArgCount)
5118 Diags.Report(DiagID: diag::err_drv_missing_argument)
5119 << Args.getArgString(Index: MissingArgIndex) << MissingArgCount;
5120
5121 // Issue errors on unknown arguments.
5122 for (const auto *A : Args.filtered(Ids: OPT_UNKNOWN)) {
5123 auto ArgString = A->getAsString(Args);
5124 std::string Nearest;
5125 if (Opts.findNearest(Option: ArgString, NearestString&: Nearest, VisibilityMask) > 1)
5126 Diags.Report(DiagID: diag::err_drv_unknown_argument) << ArgString;
5127 else
5128 Diags.Report(DiagID: diag::err_drv_unknown_argument_with_suggestion)
5129 << ArgString << Nearest;
5130 }
5131
5132 ParseFileSystemArgs(Opts&: Res.getFileSystemOpts(), Args, Diags);
5133 ParseMigratorArgs(Opts&: Res.getMigratorOpts(), Args, Diags);
5134 ParseAnalyzerArgs(Opts&: Res.getAnalyzerOpts(), Args, Diags);
5135 ParseSSAFArgs(Opts&: Res.getSSAFOpts(), Args, Diags);
5136 ParseDiagnosticArgs(Opts&: Res.getDiagnosticOpts(), Args, Diags: &Diags);
5137 ParseFrontendArgs(Opts&: Res.getFrontendOpts(), Args, Diags, IsHeaderFile&: LangOpts.IsHeaderFile);
5138 // FIXME: We shouldn't have to pass the DashX option around here
5139 InputKind DashX = Res.getFrontendOpts().DashX;
5140 ParseTargetArgs(Opts&: Res.getTargetOpts(), Args, Diags);
5141 llvm::Triple T(Res.getTargetOpts().Triple);
5142 ParseHeaderSearchArgs(Opts&: Res.getHeaderSearchOpts(), Args, Diags);
5143 if (Res.getFrontendOpts().GenReducedBMI ||
5144 Res.getFrontendOpts().ProgramAction ==
5145 frontend::GenerateReducedModuleInterface ||
5146 Res.getFrontendOpts().ProgramAction ==
5147 frontend::GenerateModuleInterface) {
5148 Res.getHeaderSearchOpts().ModulesSkipDiagnosticOptions = true;
5149 Res.getHeaderSearchOpts().ModulesSkipHeaderSearchPaths = true;
5150 }
5151 ParseAPINotesArgs(Opts&: Res.getAPINotesOpts(), Args, diags&: Diags);
5152
5153 ParsePointerAuthArgs(Opts&: LangOpts, Args, Diags);
5154
5155 ParseLangArgs(Opts&: LangOpts, Args, IK: DashX, T, Includes&: Res.getPreprocessorOpts().Includes,
5156 Diags);
5157 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
5158 LangOpts.ObjCExceptions = 1;
5159
5160 for (auto Warning : Res.getDiagnosticOpts().Warnings) {
5161 if (Warning == "misexpect" &&
5162 !Diags.isIgnored(DiagID: diag::warn_profile_data_misexpect, Loc: SourceLocation())) {
5163 Res.getCodeGenOpts().MisExpect = true;
5164 }
5165 }
5166
5167 if (LangOpts.CUDA) {
5168 // During CUDA device-side compilation, the aux triple is the
5169 // triple used for host compilation.
5170 if (LangOpts.CUDAIsDevice)
5171 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
5172 }
5173
5174 if (LangOpts.OpenACC && !Res.getFrontendOpts().UseClangIRPipeline &&
5175 isCodeGenAction(Action: Res.getFrontendOpts().ProgramAction))
5176 Diags.Report(DiagID: diag::warn_drv_openacc_without_cir);
5177
5178 // Set the triple of the host for OpenMP device compile.
5179 if (LangOpts.OpenMPIsTargetDevice)
5180 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
5181
5182 // Set the default and host triples for SYCL device compilation.
5183 if (LangOpts.SYCLIsDevice) {
5184 if (!Args.hasArg(Ids: options::OPT_triple))
5185 Res.getTargetOpts().Triple = "spirv64-unknown-unknown";
5186 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
5187 }
5188
5189 ParseCodeGenArgs(Opts&: Res.getCodeGenOpts(), Args, IK: DashX, Diags, T,
5190 OutputFile: Res.getFrontendOpts().OutputFile, LangOptsRef: LangOpts);
5191
5192 // FIXME: Override value name discarding when asan or msan is used because the
5193 // backend passes depend on the name of the alloca in order to print out
5194 // names.
5195 Res.getCodeGenOpts().DiscardValueNames &=
5196 !LangOpts.Sanitize.has(K: SanitizerKind::Address) &&
5197 !LangOpts.Sanitize.has(K: SanitizerKind::KernelAddress) &&
5198 !LangOpts.Sanitize.has(K: SanitizerKind::Memory) &&
5199 !LangOpts.Sanitize.has(K: SanitizerKind::KernelMemory);
5200
5201 ParsePreprocessorArgs(Opts&: Res.getPreprocessorOpts(), Args, Diags,
5202 Action: Res.getFrontendOpts().ProgramAction,
5203 FrontendOpts: Res.getFrontendOpts());
5204 ParsePreprocessorOutputArgs(Opts&: Res.getPreprocessorOutputOpts(), Args, Diags,
5205 Action: Res.getFrontendOpts().ProgramAction);
5206
5207 ParseDependencyOutputArgs(Opts&: Res.getDependencyOutputOpts(), Args, Diags,
5208 Action: Res.getFrontendOpts().ProgramAction,
5209 ShowLineMarkers: Res.getPreprocessorOutputOpts().ShowLineMarkers);
5210 if (!Res.getDependencyOutputOpts().OutputFile.empty() &&
5211 Res.getDependencyOutputOpts().Targets.empty())
5212 Diags.Report(DiagID: diag::err_fe_dependency_file_requires_MT);
5213
5214 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses.
5215 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses &&
5216 !Res.getLangOpts().Sanitize.empty()) {
5217 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false;
5218 Diags.Report(DiagID: diag::warn_drv_fine_grained_bitfield_accesses_ignored);
5219 }
5220
5221 // Store the command-line for using in the CodeView backend.
5222 if (Res.getCodeGenOpts().CodeViewCommandLine) {
5223 Res.getCodeGenOpts().Argv0 = Argv0;
5224 append_range(C&: Res.getCodeGenOpts().CommandLineArgs, R&: CommandLineArgs);
5225 }
5226
5227 if (!Res.getCodeGenOpts().ProfileInstrumentUsePath.empty() &&
5228 Res.getCodeGenOpts().getProfileUse() ==
5229 llvm::driver::ProfileInstrKind::ProfileNone)
5230 Diags.Report(DiagID: diag::err_drv_profile_instrument_use_path_with_no_kind);
5231
5232 FixupInvocation(Invocation&: Res, Diags, Args, IK: DashX);
5233
5234 return Diags.getNumErrors() == NumErrorsBefore;
5235}
5236
5237bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation,
5238 ArrayRef<const char *> CommandLineArgs,
5239 DiagnosticsEngine &Diags,
5240 const char *Argv0) {
5241 CompilerInvocation DummyInvocation;
5242
5243 return RoundTrip(
5244 Parse: [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs,
5245 DiagnosticsEngine &Diags, const char *Argv0) {
5246 return CreateFromArgsImpl(Res&: Invocation, CommandLineArgs, Diags, Argv0);
5247 },
5248 Generate: [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args,
5249 StringAllocator SA) {
5250 Args.push_back(Elt: "-cc1");
5251 Invocation.generateCC1CommandLine(Args, SA);
5252 },
5253 RealInvocation&: Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0);
5254}
5255
5256std::string CompilerInvocation::computeContextHash() const {
5257 // FIXME: Consider using SHA1 instead of MD5.
5258 llvm::HashBuilder<llvm::MD5, llvm::endianness::native> HBuilder;
5259
5260 // Note: For QoI reasons, the things we use as a hash here should all be
5261 // dumped via the -module-info flag.
5262
5263 // Start the signature with the compiler version.
5264 HBuilder.add(Value: getClangFullRepositoryVersion());
5265
5266 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off
5267 // and getClangFullRepositoryVersion() doesn't include git revision.
5268 HBuilder.add(Args: serialization::VERSION_MAJOR, Args: serialization::VERSION_MINOR);
5269
5270 // Extend the signature with the language options
5271 const unsigned LanguageOptionValues[] = {
5272#define HASH_LANGOPT_Benign(Value)
5273#define HASH_LANGOPT_Compatible(Value) Value,
5274#define HASH_LANGOPT_NotCompatible(Value) Value,
5275#define LANGOPT(Name, Bits, Default, Compatibility, Description) \
5276 HASH_LANGOPT_##Compatibility(LangOpts->Name)
5277#define ENUM_LANGOPT(Name, Type, Bits, Default, Compatibility, Description) \
5278 HASH_LANGOPT_##Compatibility(static_cast<unsigned>(LangOpts->get##Name()))
5279#include "clang/Basic/LangOptions.def"
5280 };
5281#undef HASH_LANGOPT_Benign
5282#undef HASH_LANGOPT_Compatible
5283#undef HASH_LANGOPT_NotCompatible
5284 // addRangeElements preserves the HBuilder.add sequence and excludes the
5285 // LanguageOptionValues element count.
5286 HBuilder.addRangeElements(Range: LanguageOptionValues);
5287
5288 HBuilder.addRange(Range: getLangOpts().ModuleFeatures);
5289
5290 HBuilder.add(Value: getLangOpts().ObjCRuntime);
5291 HBuilder.addRange(Range: getLangOpts().CommentOpts.BlockCommandNames);
5292
5293 // Extend the signature with the target options.
5294 HBuilder.add(Args: getTargetOpts().Triple, Args: getTargetOpts().CPU,
5295 Args: getTargetOpts().TuneCPU, Args: getTargetOpts().ABI);
5296 HBuilder.addRange(Range: getTargetOpts().FeaturesAsWritten);
5297
5298 // Extend the signature with preprocessor options.
5299 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
5300 HBuilder.add(Args: ppOpts.UsePredefines, Args: ppOpts.DetailedRecord);
5301
5302 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
5303 for (const auto &Macro : getPreprocessorOpts().Macros) {
5304 // If we're supposed to ignore this macro for the purposes of modules,
5305 // don't put it into the hash.
5306 if (!hsOpts.ModulesIgnoreMacros.empty()) {
5307 // Check whether we're ignoring this macro.
5308 StringRef MacroDef = Macro.first;
5309 if (hsOpts.ModulesIgnoreMacros.count(
5310 key: llvm::CachedHashString(MacroDef.split(Separator: '=').first)))
5311 continue;
5312 }
5313
5314 HBuilder.add(Value: Macro);
5315 }
5316
5317 // Extend the signature with the sysroot and other header search options.
5318 HBuilder.add(Args: hsOpts.Sysroot, Args: hsOpts.ModuleFormat, Args: hsOpts.UseDebugInfo,
5319 Args: hsOpts.UseBuiltinIncludes, Args: hsOpts.UseStandardSystemIncludes,
5320 Args: hsOpts.UseStandardCXXIncludes, Args: hsOpts.UseLibcxx,
5321 Args: hsOpts.ModulesValidateDiagnosticOptions);
5322 HBuilder.add(Value: hsOpts.ResourceDir);
5323
5324 if (hsOpts.ModulesStrictContextHash) {
5325 HBuilder.addRange(Range: hsOpts.SystemHeaderPrefixes);
5326
5327 for (const auto &UserEntry : hsOpts.UserEntries) {
5328 // If we're supposed to ignore this search path for the purposes of
5329 // modules, don't put it into the hash.
5330 if (!hsOpts.ModulesIgnoreSearchPaths.empty()) {
5331 // Check whether we're ignoring this search path.
5332 StringRef Path = UserEntry.Path;
5333 if (hsOpts.ModulesIgnoreSearchPaths.count(key: llvm::CachedHashString(Path)))
5334 continue;
5335 }
5336
5337 HBuilder.add(Value: UserEntry);
5338 }
5339
5340 HBuilder.addRange(Range: hsOpts.VFSOverlayFiles);
5341
5342 const DiagnosticOptions &diagOpts = getDiagnosticOpts();
5343#define DIAGOPT(Name, Bits, Default) HBuilder.add(diagOpts.Name);
5344#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
5345 HBuilder.add(diagOpts.get##Name());
5346#include "clang/Basic/DiagnosticOptions.def"
5347#undef DIAGOPT
5348#undef ENUM_DIAGOPT
5349 }
5350
5351 // Extend the signature with the user build path.
5352 HBuilder.add(Value: hsOpts.ModuleUserBuildPath);
5353
5354 // Extend the signature with the module file extensions.
5355 for (const auto &ext : getFrontendOpts().ModuleFileExtensions)
5356 ext->hashExtension(HBuilder);
5357
5358 // Extend the signature with the Swift version for API notes.
5359 const APINotesOptions &APINotesOpts = getAPINotesOpts();
5360 if (!APINotesOpts.SwiftVersion.empty()) {
5361 HBuilder.add(Value: APINotesOpts.SwiftVersion.getMajor());
5362 if (auto Minor = APINotesOpts.SwiftVersion.getMinor())
5363 HBuilder.add(Value: *Minor);
5364 if (auto Subminor = APINotesOpts.SwiftVersion.getSubminor())
5365 HBuilder.add(Value: *Subminor);
5366 if (auto Build = APINotesOpts.SwiftVersion.getBuild())
5367 HBuilder.add(Value: *Build);
5368 }
5369
5370 // Extend the signature with affecting codegen options.
5371 {
5372 using CK = CodeGenOptions::CompatibilityKind;
5373#define CODEGENOPT(Name, Bits, Default, Compatibility) \
5374 if constexpr (CK::Compatibility != CK::Benign) \
5375 HBuilder.add(CodeGenOpts->Name);
5376#define ENUM_CODEGENOPT(Name, Type, Bits, Default, Compatibility) \
5377 if constexpr (CK::Compatibility != CK::Benign) \
5378 HBuilder.add(static_cast<unsigned>(CodeGenOpts->get##Name()));
5379#define DEBUGOPT(Name, Bits, Default, Compatibility)
5380#define VALUE_DEBUGOPT(Name, Bits, Default, Compatibility)
5381#define ENUM_DEBUGOPT(Name, Type, Bits, Default, Compatibility)
5382#include "clang/Basic/CodeGenOptions.def"
5383 }
5384
5385 // When compiling with -gmodules, also hash -fdebug-prefix-map as it
5386 // affects the debug info in the PCM.
5387 if (getCodeGenOpts().DebugTypeExtRefs)
5388 HBuilder.addRange(Range: getCodeGenOpts().DebugPrefixMap);
5389
5390 // Extend the signature with the affecting debug options.
5391 if (getHeaderSearchOpts().ModuleFormat == "obj") {
5392 // FIXME: Replace with C++20 `using enum CodeGenOptions::CompatibilityKind`.
5393 using CK = CodeGenOptions::CompatibilityKind;
5394#define DEBUGOPT(Name, Bits, Default, Compatibility) \
5395 if constexpr (CK::Compatibility != CK::Benign) \
5396 HBuilder.add(CodeGenOpts->Name);
5397#define VALUE_DEBUGOPT(Name, Bits, Default, Compatibility) \
5398 if constexpr (CK::Compatibility != CK::Benign) \
5399 HBuilder.add(CodeGenOpts->Name);
5400#define ENUM_DEBUGOPT(Name, Type, Bits, Default, Compatibility) \
5401 if constexpr (CK::Compatibility != CK::Benign) \
5402 HBuilder.add(static_cast<unsigned>(CodeGenOpts->get##Name()));
5403#include "clang/Basic/DebugOptions.def"
5404 }
5405
5406 // Extend the signature with the enabled sanitizers, if at least one is
5407 // enabled. Sanitizers which cannot affect AST generation aren't hashed.
5408 SanitizerSet SanHash = getLangOpts().Sanitize;
5409 SanHash.clear(K: getPPTransparentSanitizers());
5410 if (!SanHash.empty())
5411 HBuilder.add(Value: SanHash.Mask);
5412
5413 llvm::MD5::MD5Result Result;
5414 HBuilder.getHasher().final(Result);
5415 uint64_t Hash = Result.high() ^ Result.low();
5416 return toString(I: llvm::APInt(64, Hash), Radix: 36, /*Signed=*/false);
5417}
5418
5419void CowCompilerInvocation::visitMutPaths(
5420 llvm::function_ref<VisitMutResult(StringRef, std::string &)> Cb) {
5421 std::string NewValue;
5422
5423#define RETURN_IF(OPTS, PATH) \
5424 do { \
5425 VisitMutResult Res = Cb(PATH, NewValue); \
5426 if (Res.Replace) { \
5427 (void)ensureOwned(OPTS); \
5428 PATH.clear(); \
5429 std::swap(PATH, NewValue); \
5430 } \
5431 if (Res.Terminate) \
5432 return; \
5433 } while (0)
5434
5435#define RETURN_IF_MANY(OPTS, PATHS) \
5436 do { \
5437 for (unsigned I = 0, E = PATHS.size(); I != E; ++I) \
5438 RETURN_IF(OPTS, PATHS[I]); \
5439 } while (0)
5440
5441 // Header search paths.
5442 RETURN_IF(HSOpts, HSOpts->Sysroot);
5443 for (auto &Entry : HSOpts->UserEntries)
5444 if (Entry.IgnoreSysRoot)
5445 RETURN_IF(HSOpts, Entry.Path);
5446 RETURN_IF(HSOpts, HSOpts->ResourceDir);
5447 RETURN_IF(HSOpts, HSOpts->ModuleCachePath);
5448 RETURN_IF(HSOpts, HSOpts->ModuleUserBuildPath);
5449 for (auto &[Name, File] : HSOpts->PrebuiltModuleFiles)
5450 RETURN_IF(HSOpts, File);
5451 RETURN_IF_MANY(HSOpts, HSOpts->PrebuiltModulePaths);
5452 RETURN_IF_MANY(HSOpts, HSOpts->VFSOverlayFiles);
5453
5454 // Preprocessor options.
5455 RETURN_IF_MANY(PPOpts, PPOpts->MacroIncludes);
5456 RETURN_IF_MANY(PPOpts, PPOpts->Includes);
5457 RETURN_IF(PPOpts, PPOpts->ImplicitPCHInclude);
5458
5459 // Frontend options.
5460 for (auto &Input : FrontendOpts->Inputs) {
5461 if (Input.isBuffer())
5462 continue;
5463
5464 RETURN_IF(FrontendOpts, Input.File);
5465 }
5466 // TODO: Also report output files such as FrontendOpts->OutputFile;
5467 RETURN_IF(FrontendOpts, FrontendOpts->CodeCompletionAt.FileName);
5468 RETURN_IF_MANY(FrontendOpts, FrontendOpts->ModuleMapFiles);
5469 RETURN_IF_MANY(FrontendOpts, FrontendOpts->ModuleFiles);
5470 RETURN_IF_MANY(FrontendOpts, FrontendOpts->ModulesEmbedFiles);
5471 RETURN_IF_MANY(FrontendOpts, FrontendOpts->ASTMergeFiles);
5472 RETURN_IF(FrontendOpts, FrontendOpts->OverrideRecordLayoutsFile);
5473 RETURN_IF(FrontendOpts, FrontendOpts->StatsFile);
5474
5475 // Filesystem options.
5476 RETURN_IF(FSOpts, FSOpts->WorkingDir);
5477
5478 // Codegen options.
5479 RETURN_IF(CodeGenOpts, CodeGenOpts->DebugCompilationDir);
5480 RETURN_IF(CodeGenOpts, CodeGenOpts->CoverageCompilationDir);
5481
5482 // Sanitizer options.
5483 RETURN_IF_MANY(LangOpts, LangOpts->NoSanitizeFiles);
5484
5485 // Coverage mappings.
5486 RETURN_IF(CodeGenOpts, CodeGenOpts->ProfileInstrumentUsePath);
5487 RETURN_IF(CodeGenOpts, CodeGenOpts->SampleProfileFile);
5488 RETURN_IF(CodeGenOpts, CodeGenOpts->ProfileRemappingFile);
5489
5490 // Dependency output options.
5491 for (auto &ExtraDep : DependencyOutputOpts->ExtraDeps)
5492 RETURN_IF(DependencyOutputOpts, ExtraDep.first);
5493}
5494
5495void CowCompilerInvocation::visitPaths(
5496 llvm::function_ref<VisitConstResult(StringRef)> Cb) const {
5497 // The const_cast here is OK, because our callback never tries to modify.
5498 return const_cast<CowCompilerInvocation *>(this)->visitMutPaths(
5499 Cb: [&Cb](StringRef Path, std::string &) { return Cb(Path); });
5500}
5501
5502void CompilerInvocationBase::generateCC1CommandLine(
5503 ArgumentConsumer Consumer) const {
5504 llvm::Triple T(getTargetOpts().Triple);
5505
5506 GenerateFileSystemArgs(Opts: getFileSystemOpts(), Consumer);
5507 GenerateMigratorArgs(Opts: getMigratorOpts(), Consumer);
5508 GenerateAnalyzerArgs(Opts: getAnalyzerOpts(), Consumer);
5509 GenerateSSAFArgs(Opts: getSSAFOpts(), Consumer);
5510 GenerateDiagnosticArgs(Opts: getDiagnosticOpts(), Consumer,
5511 /*DefaultDiagColor=*/false);
5512 GenerateFrontendArgs(Opts: getFrontendOpts(), Consumer, IsHeader: getLangOpts().IsHeaderFile);
5513 GenerateTargetArgs(Opts: getTargetOpts(), Consumer);
5514 GenerateHeaderSearchArgs(Opts: getHeaderSearchOpts(), Consumer);
5515 GenerateAPINotesArgs(Opts: getAPINotesOpts(), Consumer);
5516 GeneratePointerAuthArgs(Opts: getLangOpts(), Consumer);
5517 GenerateLangArgs(Opts: getLangOpts(), Consumer, T, IK: getFrontendOpts().DashX);
5518 GenerateCodeGenArgs(Opts: getCodeGenOpts(), Consumer, T,
5519 OutputFile: getFrontendOpts().OutputFile, LangOpts: &getLangOpts());
5520 GeneratePreprocessorArgs(Opts: getPreprocessorOpts(), Consumer, LangOpts: getLangOpts(),
5521 FrontendOpts: getFrontendOpts(), CodeGenOpts: getCodeGenOpts());
5522 GeneratePreprocessorOutputArgs(Opts: getPreprocessorOutputOpts(), Consumer,
5523 Action: getFrontendOpts().ProgramAction);
5524 GenerateDependencyOutputArgs(Opts: getDependencyOutputOpts(), Consumer);
5525}
5526
5527std::vector<std::string> CompilerInvocationBase::getCC1CommandLine() const {
5528 std::vector<std::string> Args{"-cc1"};
5529 generateCC1CommandLine(
5530 Consumer: [&Args](const Twine &Arg) { Args.push_back(x: Arg.str()); });
5531 return Args;
5532}
5533
5534void CompilerInvocation::resetNonModularOptions() {
5535 getLangOpts().resetNonModularOptions();
5536 getPreprocessorOpts().resetNonModularOptions();
5537 getCodeGenOpts().resetNonModularOptions(ModuleFormat: getHeaderSearchOpts().ModuleFormat);
5538}
5539
5540void CompilerInvocation::clearImplicitModuleBuildOptions() {
5541 getLangOpts().ImplicitModules = false;
5542 getHeaderSearchOpts().ImplicitModuleMaps = false;
5543 getHeaderSearchOpts().ModuleCachePath.clear();
5544 getHeaderSearchOpts().ModulesValidateOncePerBuildSession = false;
5545 getHeaderSearchOpts().BuildSessionTimestamp = 0;
5546 // The specific values we canonicalize to for pruning don't affect behaviour,
5547 /// so use the default values so they may be dropped from the command-line.
5548 getHeaderSearchOpts().ModuleCachePruneInterval = 7 * 24 * 60 * 60;
5549 getHeaderSearchOpts().ModuleCachePruneAfter = 31 * 24 * 60 * 60;
5550}
5551
5552IntrusiveRefCntPtr<llvm::vfs::FileSystem>
5553clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI,
5554 DiagnosticsEngine &Diags) {
5555 return createVFSFromCompilerInvocation(CI, Diags,
5556 BaseFS: llvm::vfs::getRealFileSystem());
5557}
5558
5559IntrusiveRefCntPtr<llvm::vfs::FileSystem>
5560clang::createVFSFromCompilerInvocation(
5561 const CompilerInvocation &CI, DiagnosticsEngine &Diags,
5562 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) {
5563 return createVFSFromOverlayFiles(VFSOverlayFiles: CI.getHeaderSearchOpts().VFSOverlayFiles,
5564 Diags, BaseFS: std::move(BaseFS));
5565}
5566
5567IntrusiveRefCntPtr<llvm::vfs::FileSystem> clang::createVFSFromOverlayFiles(
5568 ArrayRef<std::string> VFSOverlayFiles, DiagnosticsEngine &Diags,
5569 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) {
5570 if (VFSOverlayFiles.empty())
5571 return BaseFS;
5572
5573 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS;
5574 // earlier vfs files are on the bottom
5575 for (const auto &File : VFSOverlayFiles) {
5576 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
5577 Result->getBufferForFile(Name: File);
5578 if (!Buffer) {
5579 Diags.Report(DiagID: diag::err_missing_vfs_overlay_file) << File;
5580 continue;
5581 }
5582
5583 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML(
5584 Buffer: std::move(Buffer.get()), /*DiagHandler*/ nullptr, YAMLFilePath: File,
5585 /*DiagContext*/ nullptr, ExternalFS: Result);
5586 if (!FS) {
5587 Diags.Report(DiagID: diag::err_invalid_vfs_overlay) << File;
5588 continue;
5589 }
5590
5591 Result = FS;
5592 }
5593 return Result;
5594}
5595