1 //===- CompilerInvocation.cpp ---------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "clang/Frontend/CompilerInvocation.h"
10 #include "TestModuleFileExtension.h"
11 #include "clang/Basic/Builtins.h"
12 #include "clang/Basic/CharInfo.h"
13 #include "clang/Basic/CodeGenOptions.h"
14 #include "clang/Basic/CommentOptions.h"
15 #include "clang/Basic/DebugInfoOptions.h"
16 #include "clang/Basic/Diagnostic.h"
17 #include "clang/Basic/DiagnosticDriver.h"
18 #include "clang/Basic/DiagnosticOptions.h"
19 #include "clang/Basic/FileSystemOptions.h"
20 #include "clang/Basic/LLVM.h"
21 #include "clang/Basic/LangOptions.h"
22 #include "clang/Basic/LangStandard.h"
23 #include "clang/Basic/ObjCRuntime.h"
24 #include "clang/Basic/Sanitizers.h"
25 #include "clang/Basic/SourceLocation.h"
26 #include "clang/Basic/TargetOptions.h"
27 #include "clang/Basic/Version.h"
28 #include "clang/Basic/Visibility.h"
29 #include "clang/Basic/XRayInstr.h"
30 #include "clang/Config/config.h"
31 #include "clang/Driver/Driver.h"
32 #include "clang/Driver/DriverDiagnostic.h"
33 #include "clang/Driver/Options.h"
34 #include "clang/Frontend/CommandLineSourceLoc.h"
35 #include "clang/Frontend/DependencyOutputOptions.h"
36 #include "clang/Frontend/FrontendDiagnostic.h"
37 #include "clang/Frontend/FrontendOptions.h"
38 #include "clang/Frontend/FrontendPluginRegistry.h"
39 #include "clang/Frontend/MigratorOptions.h"
40 #include "clang/Frontend/PreprocessorOutputOptions.h"
41 #include "clang/Frontend/TextDiagnosticBuffer.h"
42 #include "clang/Frontend/Utils.h"
43 #include "clang/Lex/HeaderSearchOptions.h"
44 #include "clang/Lex/PreprocessorOptions.h"
45 #include "clang/Sema/CodeCompleteOptions.h"
46 #include "clang/Serialization/ASTBitCodes.h"
47 #include "clang/Serialization/ModuleFileExtension.h"
48 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
49 #include "llvm/ADT/APInt.h"
50 #include "llvm/ADT/ArrayRef.h"
51 #include "llvm/ADT/CachedHashString.h"
52 #include "llvm/ADT/DenseSet.h"
53 #include "llvm/ADT/FloatingPointMode.h"
54 #include "llvm/ADT/Hashing.h"
55 #include "llvm/ADT/None.h"
56 #include "llvm/ADT/Optional.h"
57 #include "llvm/ADT/STLExtras.h"
58 #include "llvm/ADT/SmallString.h"
59 #include "llvm/ADT/SmallVector.h"
60 #include "llvm/ADT/StringRef.h"
61 #include "llvm/ADT/StringSwitch.h"
62 #include "llvm/ADT/Triple.h"
63 #include "llvm/ADT/Twine.h"
64 #include "llvm/Config/llvm-config.h"
65 #include "llvm/IR/DebugInfoMetadata.h"
66 #include "llvm/Linker/Linker.h"
67 #include "llvm/MC/MCTargetOptions.h"
68 #include "llvm/Option/Arg.h"
69 #include "llvm/Option/ArgList.h"
70 #include "llvm/Option/OptSpecifier.h"
71 #include "llvm/Option/OptTable.h"
72 #include "llvm/Option/Option.h"
73 #include "llvm/ProfileData/InstrProfReader.h"
74 #include "llvm/Remarks/HotnessThresholdParser.h"
75 #include "llvm/Support/CodeGen.h"
76 #include "llvm/Support/Compiler.h"
77 #include "llvm/Support/Error.h"
78 #include "llvm/Support/ErrorHandling.h"
79 #include "llvm/Support/ErrorOr.h"
80 #include "llvm/Support/FileSystem.h"
81 #include "llvm/Support/Host.h"
82 #include "llvm/Support/MathExtras.h"
83 #include "llvm/Support/MemoryBuffer.h"
84 #include "llvm/Support/Path.h"
85 #include "llvm/Support/Process.h"
86 #include "llvm/Support/Regex.h"
87 #include "llvm/Support/VersionTuple.h"
88 #include "llvm/Support/VirtualFileSystem.h"
89 #include "llvm/Support/raw_ostream.h"
90 #include "llvm/Target/TargetOptions.h"
91 #include <algorithm>
92 #include <atomic>
93 #include <cassert>
94 #include <cstddef>
95 #include <cstring>
96 #include <memory>
97 #include <string>
98 #include <tuple>
99 #include <type_traits>
100 #include <utility>
101 #include <vector>
102
103 using namespace clang;
104 using namespace driver;
105 using namespace options;
106 using namespace llvm::opt;
107
108 //===----------------------------------------------------------------------===//
109 // Initialization.
110 //===----------------------------------------------------------------------===//
111
CompilerInvocationRefBase()112 CompilerInvocationRefBase::CompilerInvocationRefBase()
113 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
114 DiagnosticOpts(new DiagnosticOptions()),
115 HeaderSearchOpts(new HeaderSearchOptions()),
116 PreprocessorOpts(new PreprocessorOptions()),
117 AnalyzerOpts(new AnalyzerOptions()) {}
118
CompilerInvocationRefBase(const CompilerInvocationRefBase & X)119 CompilerInvocationRefBase::CompilerInvocationRefBase(
120 const CompilerInvocationRefBase &X)
121 : LangOpts(new LangOptions(*X.getLangOpts())),
122 TargetOpts(new TargetOptions(X.getTargetOpts())),
123 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
124 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
125 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())),
126 AnalyzerOpts(new AnalyzerOptions(*X.getAnalyzerOpts())) {}
127
128 CompilerInvocationRefBase::CompilerInvocationRefBase(
129 CompilerInvocationRefBase &&X) = default;
130
131 CompilerInvocationRefBase &
operator =(CompilerInvocationRefBase X)132 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase X) {
133 LangOpts.swap(X.LangOpts);
134 TargetOpts.swap(X.TargetOpts);
135 DiagnosticOpts.swap(X.DiagnosticOpts);
136 HeaderSearchOpts.swap(X.HeaderSearchOpts);
137 PreprocessorOpts.swap(X.PreprocessorOpts);
138 AnalyzerOpts.swap(X.AnalyzerOpts);
139 return *this;
140 }
141
142 CompilerInvocationRefBase &
143 CompilerInvocationRefBase::operator=(CompilerInvocationRefBase &&X) = default;
144
145 CompilerInvocationRefBase::~CompilerInvocationRefBase() = default;
146
147 //===----------------------------------------------------------------------===//
148 // Normalizers
149 //===----------------------------------------------------------------------===//
150
151 #define SIMPLE_ENUM_VALUE_TABLE
152 #include "clang/Driver/Options.inc"
153 #undef SIMPLE_ENUM_VALUE_TABLE
154
normalizeSimpleFlag(OptSpecifier Opt,unsigned TableIndex,const ArgList & Args,DiagnosticsEngine & Diags)155 static llvm::Optional<bool> normalizeSimpleFlag(OptSpecifier Opt,
156 unsigned TableIndex,
157 const ArgList &Args,
158 DiagnosticsEngine &Diags) {
159 if (Args.hasArg(Opt))
160 return true;
161 return None;
162 }
163
normalizeSimpleNegativeFlag(OptSpecifier Opt,unsigned,const ArgList & Args,DiagnosticsEngine &)164 static Optional<bool> normalizeSimpleNegativeFlag(OptSpecifier Opt, unsigned,
165 const ArgList &Args,
166 DiagnosticsEngine &) {
167 if (Args.hasArg(Opt))
168 return false;
169 return None;
170 }
171
172 /// The tblgen-erated code passes in a fifth parameter of an arbitrary type, but
173 /// denormalizeSimpleFlags never looks at it. Avoid bloating compile-time with
174 /// unnecessary template instantiations and just ignore it with a variadic
175 /// argument.
denormalizeSimpleFlag(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator,Option::OptionClass,unsigned,...)176 static void denormalizeSimpleFlag(SmallVectorImpl<const char *> &Args,
177 const char *Spelling,
178 CompilerInvocation::StringAllocator,
179 Option::OptionClass, unsigned, /*T*/...) {
180 Args.push_back(Spelling);
181 }
182
is_uint64_t_convertible()183 template <typename T> static constexpr bool is_uint64_t_convertible() {
184 return !std::is_same<T, uint64_t>::value &&
185 llvm::is_integral_or_enum<T>::value;
186 }
187
188 template <typename T,
189 std::enable_if_t<!is_uint64_t_convertible<T>(), bool> = false>
makeFlagToValueNormalizer(T Value)190 static auto makeFlagToValueNormalizer(T Value) {
191 return [Value](OptSpecifier Opt, unsigned, const ArgList &Args,
192 DiagnosticsEngine &) -> Optional<T> {
193 if (Args.hasArg(Opt))
194 return Value;
195 return None;
196 };
197 }
198
199 template <typename T,
200 std::enable_if_t<is_uint64_t_convertible<T>(), bool> = false>
makeFlagToValueNormalizer(T Value)201 static auto makeFlagToValueNormalizer(T Value) {
202 return makeFlagToValueNormalizer(uint64_t(Value));
203 }
204
makeBooleanOptionNormalizer(bool Value,bool OtherValue,OptSpecifier OtherOpt)205 static auto makeBooleanOptionNormalizer(bool Value, bool OtherValue,
206 OptSpecifier OtherOpt) {
207 return [Value, OtherValue, OtherOpt](OptSpecifier Opt, unsigned,
208 const ArgList &Args,
209 DiagnosticsEngine &) -> Optional<bool> {
210 if (const Arg *A = Args.getLastArg(Opt, OtherOpt)) {
211 return A->getOption().matches(Opt) ? Value : OtherValue;
212 }
213 return None;
214 };
215 }
216
makeBooleanOptionDenormalizer(bool Value)217 static auto makeBooleanOptionDenormalizer(bool Value) {
218 return [Value](SmallVectorImpl<const char *> &Args, const char *Spelling,
219 CompilerInvocation::StringAllocator, Option::OptionClass,
220 unsigned, bool KeyPath) {
221 if (KeyPath == Value)
222 Args.push_back(Spelling);
223 };
224 }
225
denormalizeStringImpl(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned,const Twine & Value)226 static void denormalizeStringImpl(SmallVectorImpl<const char *> &Args,
227 const char *Spelling,
228 CompilerInvocation::StringAllocator SA,
229 Option::OptionClass OptClass, unsigned,
230 const Twine &Value) {
231 switch (OptClass) {
232 case Option::SeparateClass:
233 case Option::JoinedOrSeparateClass:
234 case Option::JoinedAndSeparateClass:
235 Args.push_back(Spelling);
236 Args.push_back(SA(Value));
237 break;
238 case Option::JoinedClass:
239 case Option::CommaJoinedClass:
240 Args.push_back(SA(Twine(Spelling) + Value));
241 break;
242 default:
243 llvm_unreachable("Cannot denormalize an option with option class "
244 "incompatible with string denormalization.");
245 }
246 }
247
248 template <typename T>
249 static void
denormalizeString(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned TableIndex,T Value)250 denormalizeString(SmallVectorImpl<const char *> &Args, const char *Spelling,
251 CompilerInvocation::StringAllocator SA,
252 Option::OptionClass OptClass, unsigned TableIndex, T Value) {
253 denormalizeStringImpl(Args, Spelling, SA, OptClass, TableIndex, Twine(Value));
254 }
255
256 static Optional<SimpleEnumValue>
findValueTableByName(const SimpleEnumValueTable & Table,StringRef Name)257 findValueTableByName(const SimpleEnumValueTable &Table, StringRef Name) {
258 for (int I = 0, E = Table.Size; I != E; ++I)
259 if (Name == Table.Table[I].Name)
260 return Table.Table[I];
261
262 return None;
263 }
264
265 static Optional<SimpleEnumValue>
findValueTableByValue(const SimpleEnumValueTable & Table,unsigned Value)266 findValueTableByValue(const SimpleEnumValueTable &Table, unsigned Value) {
267 for (int I = 0, E = Table.Size; I != E; ++I)
268 if (Value == Table.Table[I].Value)
269 return Table.Table[I];
270
271 return None;
272 }
273
normalizeSimpleEnum(OptSpecifier Opt,unsigned TableIndex,const ArgList & Args,DiagnosticsEngine & Diags)274 static llvm::Optional<unsigned> normalizeSimpleEnum(OptSpecifier Opt,
275 unsigned TableIndex,
276 const ArgList &Args,
277 DiagnosticsEngine &Diags) {
278 assert(TableIndex < SimpleEnumValueTablesSize);
279 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex];
280
281 auto *Arg = Args.getLastArg(Opt);
282 if (!Arg)
283 return None;
284
285 StringRef ArgValue = Arg->getValue();
286 if (auto MaybeEnumVal = findValueTableByName(Table, ArgValue))
287 return MaybeEnumVal->Value;
288
289 Diags.Report(diag::err_drv_invalid_value)
290 << Arg->getAsString(Args) << ArgValue;
291 return None;
292 }
293
denormalizeSimpleEnumImpl(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned TableIndex,unsigned Value)294 static void denormalizeSimpleEnumImpl(SmallVectorImpl<const char *> &Args,
295 const char *Spelling,
296 CompilerInvocation::StringAllocator SA,
297 Option::OptionClass OptClass,
298 unsigned TableIndex, unsigned Value) {
299 assert(TableIndex < SimpleEnumValueTablesSize);
300 const SimpleEnumValueTable &Table = SimpleEnumValueTables[TableIndex];
301 if (auto MaybeEnumVal = findValueTableByValue(Table, Value)) {
302 denormalizeString(Args, Spelling, SA, OptClass, TableIndex,
303 MaybeEnumVal->Name);
304 } else {
305 llvm_unreachable("The simple enum value was not correctly defined in "
306 "the tablegen option description");
307 }
308 }
309
310 template <typename T>
denormalizeSimpleEnum(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned TableIndex,T Value)311 static void denormalizeSimpleEnum(SmallVectorImpl<const char *> &Args,
312 const char *Spelling,
313 CompilerInvocation::StringAllocator SA,
314 Option::OptionClass OptClass,
315 unsigned TableIndex, T Value) {
316 return denormalizeSimpleEnumImpl(Args, Spelling, SA, OptClass, TableIndex,
317 static_cast<unsigned>(Value));
318 }
319
normalizeString(OptSpecifier Opt,int TableIndex,const ArgList & Args,DiagnosticsEngine & Diags)320 static Optional<std::string> normalizeString(OptSpecifier Opt, int TableIndex,
321 const ArgList &Args,
322 DiagnosticsEngine &Diags) {
323 auto *Arg = Args.getLastArg(Opt);
324 if (!Arg)
325 return None;
326 return std::string(Arg->getValue());
327 }
328
329 template <typename IntTy>
normalizeStringIntegral(OptSpecifier Opt,int,const ArgList & Args,DiagnosticsEngine & Diags)330 static Optional<IntTy> normalizeStringIntegral(OptSpecifier Opt, int,
331 const ArgList &Args,
332 DiagnosticsEngine &Diags) {
333 auto *Arg = Args.getLastArg(Opt);
334 if (!Arg)
335 return None;
336 IntTy Res;
337 if (StringRef(Arg->getValue()).getAsInteger(0, Res)) {
338 Diags.Report(diag::err_drv_invalid_int_value)
339 << Arg->getAsString(Args) << Arg->getValue();
340 return None;
341 }
342 return Res;
343 }
344
345 static Optional<std::vector<std::string>>
normalizeStringVector(OptSpecifier Opt,int,const ArgList & Args,DiagnosticsEngine &)346 normalizeStringVector(OptSpecifier Opt, int, const ArgList &Args,
347 DiagnosticsEngine &) {
348 return Args.getAllArgValues(Opt);
349 }
350
denormalizeStringVector(SmallVectorImpl<const char * > & Args,const char * Spelling,CompilerInvocation::StringAllocator SA,Option::OptionClass OptClass,unsigned TableIndex,const std::vector<std::string> & Values)351 static void denormalizeStringVector(SmallVectorImpl<const char *> &Args,
352 const char *Spelling,
353 CompilerInvocation::StringAllocator SA,
354 Option::OptionClass OptClass,
355 unsigned TableIndex,
356 const std::vector<std::string> &Values) {
357 switch (OptClass) {
358 case Option::CommaJoinedClass: {
359 std::string CommaJoinedValue;
360 if (!Values.empty()) {
361 CommaJoinedValue.append(Values.front());
362 for (const std::string &Value : llvm::drop_begin(Values, 1)) {
363 CommaJoinedValue.append(",");
364 CommaJoinedValue.append(Value);
365 }
366 }
367 denormalizeString(Args, Spelling, SA, Option::OptionClass::JoinedClass,
368 TableIndex, CommaJoinedValue);
369 break;
370 }
371 case Option::JoinedClass:
372 case Option::SeparateClass:
373 case Option::JoinedOrSeparateClass:
374 for (const std::string &Value : Values)
375 denormalizeString(Args, Spelling, SA, OptClass, TableIndex, Value);
376 break;
377 default:
378 llvm_unreachable("Cannot denormalize an option with option class "
379 "incompatible with string vector denormalization.");
380 }
381 }
382
normalizeTriple(OptSpecifier Opt,int TableIndex,const ArgList & Args,DiagnosticsEngine & Diags)383 static Optional<std::string> normalizeTriple(OptSpecifier Opt, int TableIndex,
384 const ArgList &Args,
385 DiagnosticsEngine &Diags) {
386 auto *Arg = Args.getLastArg(Opt);
387 if (!Arg)
388 return None;
389 return llvm::Triple::normalize(Arg->getValue());
390 }
391
392 template <typename T, typename U>
mergeForwardValue(T KeyPath,U Value)393 static T mergeForwardValue(T KeyPath, U Value) {
394 return static_cast<T>(Value);
395 }
396
mergeMaskValue(T KeyPath,U Value)397 template <typename T, typename U> static T mergeMaskValue(T KeyPath, U Value) {
398 return KeyPath | Value;
399 }
400
extractForwardValue(T KeyPath)401 template <typename T> static T extractForwardValue(T KeyPath) {
402 return KeyPath;
403 }
404
405 template <typename T, typename U, U Value>
extractMaskValue(T KeyPath)406 static T extractMaskValue(T KeyPath) {
407 return ((KeyPath & Value) == Value) ? static_cast<T>(Value) : T();
408 }
409
410 #define PARSE_OPTION_WITH_MARSHALLING( \
411 ARGS, DIAGS, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
412 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX) \
413 if ((FLAGS)&options::CC1Option) { \
414 KEYPATH = MERGER(KEYPATH, DEFAULT_VALUE); \
415 if (IMPLIED_CHECK) \
416 KEYPATH = MERGER(KEYPATH, IMPLIED_VALUE); \
417 if (SHOULD_PARSE) \
418 if (auto MaybeValue = NORMALIZER(OPT_##ID, TABLE_INDEX, ARGS, DIAGS)) \
419 KEYPATH = \
420 MERGER(KEYPATH, static_cast<decltype(KEYPATH)>(*MaybeValue)); \
421 }
422
423 // Capture the extracted value as a lambda argument to avoid potential issues
424 // with lifetime extension of the reference.
425 #define GENERATE_OPTION_WITH_MARSHALLING( \
426 ARGS, STRING_ALLOCATOR, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, \
427 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, \
428 TABLE_INDEX) \
429 if ((FLAGS)&options::CC1Option) { \
430 [&](const auto &Extracted) { \
431 if (ALWAYS_EMIT || \
432 (Extracted != \
433 static_cast<decltype(KEYPATH)>((IMPLIED_CHECK) ? (IMPLIED_VALUE) \
434 : (DEFAULT_VALUE)))) \
435 DENORMALIZER(ARGS, SPELLING, STRING_ALLOCATOR, Option::KIND##Class, \
436 TABLE_INDEX, Extracted); \
437 }(EXTRACTOR(KEYPATH)); \
438 }
439
440 static const StringRef GetInputKindName(InputKind IK);
441
FixupInvocation(CompilerInvocation & Invocation,DiagnosticsEngine & Diags,const ArgList & Args,InputKind IK)442 static bool FixupInvocation(CompilerInvocation &Invocation,
443 DiagnosticsEngine &Diags, const ArgList &Args,
444 InputKind IK) {
445 unsigned NumErrorsBefore = Diags.getNumErrors();
446
447 LangOptions &LangOpts = *Invocation.getLangOpts();
448 CodeGenOptions &CodeGenOpts = Invocation.getCodeGenOpts();
449 TargetOptions &TargetOpts = Invocation.getTargetOpts();
450 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts();
451 CodeGenOpts.XRayInstrumentFunctions = LangOpts.XRayInstrument;
452 CodeGenOpts.XRayAlwaysEmitCustomEvents = LangOpts.XRayAlwaysEmitCustomEvents;
453 CodeGenOpts.XRayAlwaysEmitTypedEvents = LangOpts.XRayAlwaysEmitTypedEvents;
454 CodeGenOpts.DisableFree = FrontendOpts.DisableFree;
455 FrontendOpts.GenerateGlobalModuleIndex = FrontendOpts.UseGlobalModuleIndex;
456
457 LangOpts.ForceEmitVTables = CodeGenOpts.ForceEmitVTables;
458 LangOpts.SpeculativeLoadHardening = CodeGenOpts.SpeculativeLoadHardening;
459 LangOpts.CurrentModule = LangOpts.ModuleName;
460
461 llvm::Triple T(TargetOpts.Triple);
462 llvm::Triple::ArchType Arch = T.getArch();
463
464 CodeGenOpts.CodeModel = TargetOpts.CodeModel;
465
466 if (LangOpts.getExceptionHandling() !=
467 LangOptions::ExceptionHandlingKind::None &&
468 T.isWindowsMSVCEnvironment())
469 Diags.Report(diag::err_fe_invalid_exception_model)
470 << static_cast<unsigned>(LangOpts.getExceptionHandling()) << T.str();
471
472 if (LangOpts.AppleKext && !LangOpts.CPlusPlus)
473 Diags.Report(diag::warn_c_kext);
474
475 if (Args.hasArg(OPT_fconcepts_ts))
476 Diags.Report(diag::warn_fe_concepts_ts_flag);
477
478 if (LangOpts.NewAlignOverride &&
479 !llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) {
480 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
481 Diags.Report(diag::err_fe_invalid_alignment)
482 << A->getAsString(Args) << A->getValue();
483 LangOpts.NewAlignOverride = 0;
484 }
485
486 // Prevent the user from specifying both -fsycl-is-device and -fsycl-is-host.
487 if (LangOpts.SYCLIsDevice && LangOpts.SYCLIsHost)
488 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fsycl-is-device"
489 << "-fsycl-is-host";
490
491 if (Args.hasArg(OPT_fgnu89_inline) && LangOpts.CPlusPlus)
492 Diags.Report(diag::err_drv_argument_not_allowed_with)
493 << "-fgnu89-inline" << GetInputKindName(IK);
494
495 if (Args.hasArg(OPT_fgpu_allow_device_init) && !LangOpts.HIP)
496 Diags.Report(diag::warn_ignored_hip_only_option)
497 << Args.getLastArg(OPT_fgpu_allow_device_init)->getAsString(Args);
498
499 if (Args.hasArg(OPT_gpu_max_threads_per_block_EQ) && !LangOpts.HIP)
500 Diags.Report(diag::warn_ignored_hip_only_option)
501 << Args.getLastArg(OPT_gpu_max_threads_per_block_EQ)->getAsString(Args);
502
503 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
504 // This option should be deprecated for CL > 1.0 because
505 // this option was added for compatibility with OpenCL 1.0.
506 if (Args.getLastArg(OPT_cl_strict_aliasing) && LangOpts.OpenCLVersion > 100)
507 Diags.Report(diag::warn_option_invalid_ocl_version)
508 << LangOpts.getOpenCLVersionTuple().getAsString()
509 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args);
510
511 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
512 auto DefaultCC = LangOpts.getDefaultCallingConv();
513
514 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
515 DefaultCC == LangOptions::DCC_StdCall) &&
516 Arch != llvm::Triple::x86;
517 emitError |= (DefaultCC == LangOptions::DCC_VectorCall ||
518 DefaultCC == LangOptions::DCC_RegCall) &&
519 !T.isX86();
520 if (emitError)
521 Diags.Report(diag::err_drv_argument_not_allowed_with)
522 << A->getSpelling() << T.getTriple();
523 }
524
525 if (!CodeGenOpts.ProfileRemappingFile.empty() && CodeGenOpts.LegacyPassManager)
526 Diags.Report(diag::err_drv_argument_only_allowed_with)
527 << Args.getLastArg(OPT_fprofile_remapping_file_EQ)->getAsString(Args)
528 << "-fno-legacy-pass-manager";
529
530 return Diags.getNumErrors() == NumErrorsBefore;
531 }
532
533 //===----------------------------------------------------------------------===//
534 // Deserialization (from args)
535 //===----------------------------------------------------------------------===//
536
getOptimizationLevel(ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)537 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
538 DiagnosticsEngine &Diags) {
539 unsigned DefaultOpt = llvm::CodeGenOpt::None;
540 if ((IK.getLanguage() == Language::OpenCL ||
541 IK.getLanguage() == Language::OpenCLCXX) &&
542 !Args.hasArg(OPT_cl_opt_disable))
543 DefaultOpt = llvm::CodeGenOpt::Default;
544
545 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
546 if (A->getOption().matches(options::OPT_O0))
547 return llvm::CodeGenOpt::None;
548
549 if (A->getOption().matches(options::OPT_Ofast))
550 return llvm::CodeGenOpt::Aggressive;
551
552 assert(A->getOption().matches(options::OPT_O));
553
554 StringRef S(A->getValue());
555 if (S == "s" || S == "z")
556 return llvm::CodeGenOpt::Default;
557
558 if (S == "g")
559 return llvm::CodeGenOpt::Less;
560
561 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
562 }
563
564 return DefaultOpt;
565 }
566
getOptimizationLevelSize(ArgList & Args)567 static unsigned getOptimizationLevelSize(ArgList &Args) {
568 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
569 if (A->getOption().matches(options::OPT_O)) {
570 switch (A->getValue()[0]) {
571 default:
572 return 0;
573 case 's':
574 return 1;
575 case 'z':
576 return 2;
577 }
578 }
579 }
580 return 0;
581 }
582
GenerateArg(SmallVectorImpl<const char * > & Args,llvm::opt::OptSpecifier OptSpecifier,CompilerInvocation::StringAllocator SA)583 static void GenerateArg(SmallVectorImpl<const char *> &Args,
584 llvm::opt::OptSpecifier OptSpecifier,
585 CompilerInvocation::StringAllocator SA) {
586 Option Opt = getDriverOptTable().getOption(OptSpecifier);
587 denormalizeSimpleFlag(Args, SA(Opt.getPrefix() + Opt.getName()), SA,
588 Option::OptionClass::FlagClass, 0);
589 }
590
GenerateArg(SmallVectorImpl<const char * > & Args,llvm::opt::OptSpecifier OptSpecifier,const Twine & Value,CompilerInvocation::StringAllocator SA)591 static void GenerateArg(SmallVectorImpl<const char *> &Args,
592 llvm::opt::OptSpecifier OptSpecifier,
593 const Twine &Value,
594 CompilerInvocation::StringAllocator SA) {
595 Option Opt = getDriverOptTable().getOption(OptSpecifier);
596 denormalizeString(Args, SA(Opt.getPrefix() + Opt.getName()), SA,
597 Opt.getKind(), 0, Value);
598 }
599
600 // Parse command line arguments into CompilerInvocation.
601 using ParseFn =
602 llvm::function_ref<bool(CompilerInvocation &, ArrayRef<const char *>,
603 DiagnosticsEngine &, const char *)>;
604
605 // Generate command line arguments from CompilerInvocation.
606 using GenerateFn = llvm::function_ref<void(
607 CompilerInvocation &, SmallVectorImpl<const char *> &,
608 CompilerInvocation::StringAllocator)>;
609
610 // May perform round-trip of command line arguments. By default, the round-trip
611 // is enabled if CLANG_ROUND_TRIP_CC1_ARGS was defined during build. This can be
612 // overwritten at run-time via the "-round-trip-args" and "-no-round-trip-args"
613 // command line flags.
614 // During round-trip, the command line arguments are parsed into a dummy
615 // instance of CompilerInvocation which is used to generate the command line
616 // arguments again. The real CompilerInvocation instance is then created by
617 // parsing the generated arguments, not the original ones.
RoundTrip(ParseFn Parse,GenerateFn Generate,CompilerInvocation & RealInvocation,CompilerInvocation & DummyInvocation,ArrayRef<const char * > CommandLineArgs,DiagnosticsEngine & Diags,const char * Argv0)618 static bool RoundTrip(ParseFn Parse, GenerateFn Generate,
619 CompilerInvocation &RealInvocation,
620 CompilerInvocation &DummyInvocation,
621 ArrayRef<const char *> CommandLineArgs,
622 DiagnosticsEngine &Diags, const char *Argv0) {
623 // FIXME: Switch to '#ifndef NDEBUG' when possible.
624 #ifdef CLANG_ROUND_TRIP_CC1_ARGS
625 bool DoRoundTripDefault = true;
626 #else
627 bool DoRoundTripDefault = false;
628 #endif
629
630 bool DoRoundTrip = DoRoundTripDefault;
631 for (const auto *Arg : CommandLineArgs) {
632 if (Arg == StringRef("-round-trip-args"))
633 DoRoundTrip = true;
634 if (Arg == StringRef("-no-round-trip-args"))
635 DoRoundTrip = false;
636 }
637
638 // If round-trip was not requested, simply run the parser with the real
639 // invocation diagnostics.
640 if (!DoRoundTrip)
641 return Parse(RealInvocation, CommandLineArgs, Diags, Argv0);
642
643 // Serializes quoted (and potentially escaped) arguments.
644 auto SerializeArgs = [](ArrayRef<const char *> Args) {
645 std::string Buffer;
646 llvm::raw_string_ostream OS(Buffer);
647 for (const char *Arg : Args) {
648 llvm::sys::printArg(OS, Arg, /*Quote=*/true);
649 OS << ' ';
650 }
651 OS.flush();
652 return Buffer;
653 };
654
655 // Setup a dummy DiagnosticsEngine.
656 DiagnosticsEngine DummyDiags(new DiagnosticIDs(), new DiagnosticOptions());
657 DummyDiags.setClient(new TextDiagnosticBuffer());
658
659 // Run the first parse on the original arguments with the dummy invocation and
660 // diagnostics.
661 if (!Parse(DummyInvocation, CommandLineArgs, DummyDiags, Argv0) ||
662 DummyDiags.getNumWarnings() != 0) {
663 // If the first parse did not succeed, it must be user mistake (invalid
664 // command line arguments). We won't be able to generate arguments that
665 // would reproduce the same result. Let's fail again with the real
666 // invocation and diagnostics, so all side-effects of parsing are visible.
667 unsigned NumWarningsBefore = Diags.getNumWarnings();
668 auto Success = Parse(RealInvocation, CommandLineArgs, Diags, Argv0);
669 if (!Success || Diags.getNumWarnings() != NumWarningsBefore)
670 return Success;
671
672 // Parse with original options and diagnostics succeeded even though it
673 // shouldn't have. Something is off.
674 Diags.Report(diag::err_cc1_round_trip_fail_then_ok);
675 Diags.Report(diag::note_cc1_round_trip_original)
676 << SerializeArgs(CommandLineArgs);
677 return false;
678 }
679
680 // Setup string allocator.
681 llvm::BumpPtrAllocator Alloc;
682 llvm::StringSaver StringPool(Alloc);
683 auto SA = [&StringPool](const Twine &Arg) {
684 return StringPool.save(Arg).data();
685 };
686
687 // Generate arguments from the dummy invocation. If Generate is the
688 // inverse of Parse, the newly generated arguments must have the same
689 // semantics as the original.
690 SmallVector<const char *> GeneratedArgs1;
691 Generate(DummyInvocation, GeneratedArgs1, SA);
692
693 // Run the second parse, now on the generated arguments, and with the real
694 // invocation and diagnostics. The result is what we will end up using for the
695 // rest of compilation, so if Generate is not inverse of Parse, something down
696 // the line will break.
697 bool Success2 = Parse(RealInvocation, GeneratedArgs1, Diags, Argv0);
698
699 // The first parse on original arguments succeeded, but second parse of
700 // generated arguments failed. Something must be wrong with the generator.
701 if (!Success2) {
702 Diags.Report(diag::err_cc1_round_trip_ok_then_fail);
703 Diags.Report(diag::note_cc1_round_trip_generated)
704 << 1 << SerializeArgs(GeneratedArgs1);
705 return false;
706 }
707
708 // Generate arguments again, this time from the options we will end up using
709 // for the rest of the compilation.
710 SmallVector<const char *> GeneratedArgs2;
711 Generate(RealInvocation, GeneratedArgs2, SA);
712
713 // Compares two lists of generated arguments.
714 auto Equal = [](const ArrayRef<const char *> A,
715 const ArrayRef<const char *> B) {
716 return std::equal(A.begin(), A.end(), B.begin(), B.end(),
717 [](const char *AElem, const char *BElem) {
718 return StringRef(AElem) == StringRef(BElem);
719 });
720 };
721
722 // If we generated different arguments from what we assume are two
723 // semantically equivalent CompilerInvocations, the Generate function may
724 // be non-deterministic.
725 if (!Equal(GeneratedArgs1, GeneratedArgs2)) {
726 Diags.Report(diag::err_cc1_round_trip_mismatch);
727 Diags.Report(diag::note_cc1_round_trip_generated)
728 << 1 << SerializeArgs(GeneratedArgs1);
729 Diags.Report(diag::note_cc1_round_trip_generated)
730 << 2 << SerializeArgs(GeneratedArgs2);
731 return false;
732 }
733
734 Diags.Report(diag::remark_cc1_round_trip_generated)
735 << 1 << SerializeArgs(GeneratedArgs1);
736 Diags.Report(diag::remark_cc1_round_trip_generated)
737 << 2 << SerializeArgs(GeneratedArgs2);
738
739 return Success2;
740 }
741
addDiagnosticArgs(ArgList & Args,OptSpecifier Group,OptSpecifier GroupWithValue,std::vector<std::string> & Diagnostics)742 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
743 OptSpecifier GroupWithValue,
744 std::vector<std::string> &Diagnostics) {
745 for (auto *A : Args.filtered(Group)) {
746 if (A->getOption().getKind() == Option::FlagClass) {
747 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
748 // its name (minus the "W" or "R" at the beginning) to the diagnostics.
749 Diagnostics.push_back(
750 std::string(A->getOption().getName().drop_front(1)));
751 } else if (A->getOption().matches(GroupWithValue)) {
752 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic
753 // group. Add only the group name to the diagnostics.
754 Diagnostics.push_back(
755 std::string(A->getOption().getName().drop_front(1).rtrim("=-")));
756 } else {
757 // Otherwise, add its value (for OPT_W_Joined and similar).
758 Diagnostics.push_back(A->getValue());
759 }
760 }
761 }
762
763 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr,
764 // it won't verify the input.
765 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
766 DiagnosticsEngine *Diags);
767
getAllNoBuiltinFuncValues(ArgList & Args,std::vector<std::string> & Funcs)768 static void getAllNoBuiltinFuncValues(ArgList &Args,
769 std::vector<std::string> &Funcs) {
770 std::vector<std::string> Values = Args.getAllArgValues(OPT_fno_builtin_);
771 auto BuiltinEnd = llvm::partition(Values, [](const std::string FuncName) {
772 return Builtin::Context::isBuiltinFunc(FuncName);
773 });
774 Funcs.insert(Funcs.end(), Values.begin(), BuiltinEnd);
775 }
776
GenerateAnalyzerArgs(AnalyzerOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA)777 static void GenerateAnalyzerArgs(AnalyzerOptions &Opts,
778 SmallVectorImpl<const char *> &Args,
779 CompilerInvocation::StringAllocator SA) {
780 const AnalyzerOptions *AnalyzerOpts = &Opts;
781
782 #define ANALYZER_OPTION_WITH_MARSHALLING( \
783 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
784 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
785 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
786 MERGER, EXTRACTOR, TABLE_INDEX) \
787 GENERATE_OPTION_WITH_MARSHALLING( \
788 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
789 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
790 #include "clang/Driver/Options.inc"
791 #undef ANALYZER_OPTION_WITH_MARSHALLING
792
793 if (Opts.AnalysisStoreOpt != RegionStoreModel) {
794 switch (Opts.AnalysisStoreOpt) {
795 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
796 case NAME##Model: \
797 GenerateArg(Args, OPT_analyzer_store, CMDFLAG, SA); \
798 break;
799 #include "clang/StaticAnalyzer/Core/Analyses.def"
800 default:
801 llvm_unreachable("Tried to generate unknown analysis store.");
802 }
803 }
804
805 if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
806 switch (Opts.AnalysisConstraintsOpt) {
807 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
808 case NAME##Model: \
809 GenerateArg(Args, OPT_analyzer_constraints, CMDFLAG, SA); \
810 break;
811 #include "clang/StaticAnalyzer/Core/Analyses.def"
812 default:
813 llvm_unreachable("Tried to generate unknown analysis constraint.");
814 }
815 }
816
817 if (Opts.AnalysisDiagOpt != PD_HTML) {
818 switch (Opts.AnalysisDiagOpt) {
819 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
820 case PD_##NAME: \
821 GenerateArg(Args, OPT_analyzer_output, CMDFLAG, SA); \
822 break;
823 #include "clang/StaticAnalyzer/Core/Analyses.def"
824 default:
825 llvm_unreachable("Tried to generate unknown analysis diagnostic client.");
826 }
827 }
828
829 if (Opts.AnalysisPurgeOpt != PurgeStmt) {
830 switch (Opts.AnalysisPurgeOpt) {
831 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
832 case NAME: \
833 GenerateArg(Args, OPT_analyzer_purge, CMDFLAG, SA); \
834 break;
835 #include "clang/StaticAnalyzer/Core/Analyses.def"
836 default:
837 llvm_unreachable("Tried to generate unknown analysis purge mode.");
838 }
839 }
840
841 if (Opts.InliningMode != NoRedundancy) {
842 switch (Opts.InliningMode) {
843 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
844 case NAME: \
845 GenerateArg(Args, OPT_analyzer_inlining_mode, CMDFLAG, SA); \
846 break;
847 #include "clang/StaticAnalyzer/Core/Analyses.def"
848 default:
849 llvm_unreachable("Tried to generate unknown analysis inlining mode.");
850 }
851 }
852
853 for (const auto &CP : Opts.CheckersAndPackages) {
854 OptSpecifier Opt =
855 CP.second ? OPT_analyzer_checker : OPT_analyzer_disable_checker;
856 GenerateArg(Args, Opt, CP.first, SA);
857 }
858
859 AnalyzerOptions ConfigOpts;
860 parseAnalyzerConfigs(ConfigOpts, nullptr);
861
862 for (const auto &C : Opts.Config) {
863 // Don't generate anything that came from parseAnalyzerConfigs. It would be
864 // redundant and may not be valid on the command line.
865 auto Entry = ConfigOpts.Config.find(C.getKey());
866 if (Entry != ConfigOpts.Config.end() && Entry->getValue() == C.getValue())
867 continue;
868
869 GenerateArg(Args, OPT_analyzer_config, C.getKey() + "=" + C.getValue(), SA);
870 }
871
872 // Nothing to generate for FullCompilerInvocation.
873 }
874
ParseAnalyzerArgs(AnalyzerOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)875 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
876 DiagnosticsEngine &Diags) {
877 unsigned NumErrorsBefore = Diags.getNumErrors();
878
879 AnalyzerOptions *AnalyzerOpts = &Opts;
880
881 #define ANALYZER_OPTION_WITH_MARSHALLING( \
882 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
883 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
884 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
885 MERGER, EXTRACTOR, TABLE_INDEX) \
886 PARSE_OPTION_WITH_MARSHALLING( \
887 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
888 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
889 #include "clang/Driver/Options.inc"
890 #undef ANALYZER_OPTION_WITH_MARSHALLING
891
892 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
893 StringRef Name = A->getValue();
894 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
895 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
896 .Case(CMDFLAG, NAME##Model)
897 #include "clang/StaticAnalyzer/Core/Analyses.def"
898 .Default(NumStores);
899 if (Value == NumStores) {
900 Diags.Report(diag::err_drv_invalid_value)
901 << A->getAsString(Args) << Name;
902 } else {
903 Opts.AnalysisStoreOpt = Value;
904 }
905 }
906
907 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
908 StringRef Name = A->getValue();
909 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
910 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
911 .Case(CMDFLAG, NAME##Model)
912 #include "clang/StaticAnalyzer/Core/Analyses.def"
913 .Default(NumConstraints);
914 if (Value == NumConstraints) {
915 Diags.Report(diag::err_drv_invalid_value)
916 << A->getAsString(Args) << Name;
917 } else {
918 Opts.AnalysisConstraintsOpt = Value;
919 }
920 }
921
922 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
923 StringRef Name = A->getValue();
924 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
925 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
926 .Case(CMDFLAG, PD_##NAME)
927 #include "clang/StaticAnalyzer/Core/Analyses.def"
928 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
929 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
930 Diags.Report(diag::err_drv_invalid_value)
931 << A->getAsString(Args) << Name;
932 } else {
933 Opts.AnalysisDiagOpt = Value;
934 }
935 }
936
937 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
938 StringRef Name = A->getValue();
939 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
940 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
941 .Case(CMDFLAG, NAME)
942 #include "clang/StaticAnalyzer/Core/Analyses.def"
943 .Default(NumPurgeModes);
944 if (Value == NumPurgeModes) {
945 Diags.Report(diag::err_drv_invalid_value)
946 << A->getAsString(Args) << Name;
947 } else {
948 Opts.AnalysisPurgeOpt = Value;
949 }
950 }
951
952 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
953 StringRef Name = A->getValue();
954 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
955 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
956 .Case(CMDFLAG, NAME)
957 #include "clang/StaticAnalyzer/Core/Analyses.def"
958 .Default(NumInliningModes);
959 if (Value == NumInliningModes) {
960 Diags.Report(diag::err_drv_invalid_value)
961 << A->getAsString(Args) << Name;
962 } else {
963 Opts.InliningMode = Value;
964 }
965 }
966
967 Opts.CheckersAndPackages.clear();
968 for (const Arg *A :
969 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) {
970 A->claim();
971 bool IsEnabled = A->getOption().getID() == OPT_analyzer_checker;
972 // We can have a list of comma separated checker names, e.g:
973 // '-analyzer-checker=cocoa,unix'
974 StringRef CheckerAndPackageList = A->getValue();
975 SmallVector<StringRef, 16> CheckersAndPackages;
976 CheckerAndPackageList.split(CheckersAndPackages, ",");
977 for (const StringRef &CheckerOrPackage : CheckersAndPackages)
978 Opts.CheckersAndPackages.emplace_back(std::string(CheckerOrPackage),
979 IsEnabled);
980 }
981
982 // Go through the analyzer configuration options.
983 for (const auto *A : Args.filtered(OPT_analyzer_config)) {
984
985 // We can have a list of comma separated config names, e.g:
986 // '-analyzer-config key1=val1,key2=val2'
987 StringRef configList = A->getValue();
988 SmallVector<StringRef, 4> configVals;
989 configList.split(configVals, ",");
990 for (const auto &configVal : configVals) {
991 StringRef key, val;
992 std::tie(key, val) = configVal.split("=");
993 if (val.empty()) {
994 Diags.Report(SourceLocation(),
995 diag::err_analyzer_config_no_value) << configVal;
996 break;
997 }
998 if (val.find('=') != StringRef::npos) {
999 Diags.Report(SourceLocation(),
1000 diag::err_analyzer_config_multiple_values)
1001 << configVal;
1002 break;
1003 }
1004
1005 // TODO: Check checker options too, possibly in CheckerRegistry.
1006 // Leave unknown non-checker configs unclaimed.
1007 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) {
1008 if (Opts.ShouldEmitErrorsOnInvalidConfigValue)
1009 Diags.Report(diag::err_analyzer_config_unknown) << key;
1010 continue;
1011 }
1012
1013 A->claim();
1014 Opts.Config[key] = std::string(val);
1015 }
1016 }
1017
1018 if (Opts.ShouldEmitErrorsOnInvalidConfigValue)
1019 parseAnalyzerConfigs(Opts, &Diags);
1020 else
1021 parseAnalyzerConfigs(Opts, nullptr);
1022
1023 llvm::raw_string_ostream os(Opts.FullCompilerInvocation);
1024 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) {
1025 if (i != 0)
1026 os << " ";
1027 os << Args.getArgString(i);
1028 }
1029 os.flush();
1030
1031 return Diags.getNumErrors() == NumErrorsBefore;
1032 }
1033
getStringOption(AnalyzerOptions::ConfigTable & Config,StringRef OptionName,StringRef DefaultVal)1034 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config,
1035 StringRef OptionName, StringRef DefaultVal) {
1036 return Config.insert({OptionName, std::string(DefaultVal)}).first->second;
1037 }
1038
initOption(AnalyzerOptions::ConfigTable & Config,DiagnosticsEngine * Diags,StringRef & OptionField,StringRef Name,StringRef DefaultVal)1039 static void initOption(AnalyzerOptions::ConfigTable &Config,
1040 DiagnosticsEngine *Diags,
1041 StringRef &OptionField, StringRef Name,
1042 StringRef DefaultVal) {
1043 // String options may be known to invalid (e.g. if the expected string is a
1044 // file name, but the file does not exist), those will have to be checked in
1045 // parseConfigs.
1046 OptionField = getStringOption(Config, Name, DefaultVal);
1047 }
1048
initOption(AnalyzerOptions::ConfigTable & Config,DiagnosticsEngine * Diags,bool & OptionField,StringRef Name,bool DefaultVal)1049 static void initOption(AnalyzerOptions::ConfigTable &Config,
1050 DiagnosticsEngine *Diags,
1051 bool &OptionField, StringRef Name, bool DefaultVal) {
1052 auto PossiblyInvalidVal = llvm::StringSwitch<Optional<bool>>(
1053 getStringOption(Config, Name, (DefaultVal ? "true" : "false")))
1054 .Case("true", true)
1055 .Case("false", false)
1056 .Default(None);
1057
1058 if (!PossiblyInvalidVal) {
1059 if (Diags)
1060 Diags->Report(diag::err_analyzer_config_invalid_input)
1061 << Name << "a boolean";
1062 else
1063 OptionField = DefaultVal;
1064 } else
1065 OptionField = PossiblyInvalidVal.getValue();
1066 }
1067
initOption(AnalyzerOptions::ConfigTable & Config,DiagnosticsEngine * Diags,unsigned & OptionField,StringRef Name,unsigned DefaultVal)1068 static void initOption(AnalyzerOptions::ConfigTable &Config,
1069 DiagnosticsEngine *Diags,
1070 unsigned &OptionField, StringRef Name,
1071 unsigned DefaultVal) {
1072
1073 OptionField = DefaultVal;
1074 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal))
1075 .getAsInteger(0, OptionField);
1076 if (Diags && HasFailed)
1077 Diags->Report(diag::err_analyzer_config_invalid_input)
1078 << Name << "an unsigned";
1079 }
1080
parseAnalyzerConfigs(AnalyzerOptions & AnOpts,DiagnosticsEngine * Diags)1081 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
1082 DiagnosticsEngine *Diags) {
1083 // TODO: There's no need to store the entire configtable, it'd be plenty
1084 // enough tostore checker options.
1085
1086 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \
1087 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL);
1088
1089 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \
1090 SHALLOW_VAL, DEEP_VAL) \
1091 switch (AnOpts.getUserMode()) { \
1092 case UMK_Shallow: \
1093 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, SHALLOW_VAL); \
1094 break; \
1095 case UMK_Deep: \
1096 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEEP_VAL); \
1097 break; \
1098 } \
1099
1100 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
1101 #undef ANALYZER_OPTION
1102 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE
1103
1104 // At this point, AnalyzerOptions is configured. Let's validate some options.
1105
1106 // FIXME: Here we try to validate the silenced checkers or packages are valid.
1107 // The current approach only validates the registered checkers which does not
1108 // contain the runtime enabled checkers and optimally we would validate both.
1109 if (!AnOpts.RawSilencedCheckersAndPackages.empty()) {
1110 std::vector<StringRef> Checkers =
1111 AnOpts.getRegisteredCheckers(/*IncludeExperimental=*/true);
1112 std::vector<StringRef> Packages =
1113 AnOpts.getRegisteredPackages(/*IncludeExperimental=*/true);
1114
1115 SmallVector<StringRef, 16> CheckersAndPackages;
1116 AnOpts.RawSilencedCheckersAndPackages.split(CheckersAndPackages, ";");
1117
1118 for (const StringRef &CheckerOrPackage : CheckersAndPackages) {
1119 if (Diags) {
1120 bool IsChecker = CheckerOrPackage.contains('.');
1121 bool IsValidName =
1122 IsChecker
1123 ? llvm::find(Checkers, CheckerOrPackage) != Checkers.end()
1124 : llvm::find(Packages, CheckerOrPackage) != Packages.end();
1125
1126 if (!IsValidName)
1127 Diags->Report(diag::err_unknown_analyzer_checker_or_package)
1128 << CheckerOrPackage;
1129 }
1130
1131 AnOpts.SilencedCheckersAndPackages.emplace_back(CheckerOrPackage);
1132 }
1133 }
1134
1135 if (!Diags)
1136 return;
1137
1138 if (AnOpts.ShouldTrackConditionsDebug && !AnOpts.ShouldTrackConditions)
1139 Diags->Report(diag::err_analyzer_config_invalid_input)
1140 << "track-conditions-debug" << "'track-conditions' to also be enabled";
1141
1142 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir))
1143 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir"
1144 << "a filename";
1145
1146 if (!AnOpts.ModelPath.empty() &&
1147 !llvm::sys::fs::is_directory(AnOpts.ModelPath))
1148 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path"
1149 << "a filename";
1150 }
1151
1152 /// Generate a remark argument. This is an inverse of `ParseOptimizationRemark`.
1153 static void
GenerateOptimizationRemark(SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA,OptSpecifier OptEQ,StringRef Name,const CodeGenOptions::OptRemark & Remark)1154 GenerateOptimizationRemark(SmallVectorImpl<const char *> &Args,
1155 CompilerInvocation::StringAllocator SA,
1156 OptSpecifier OptEQ, StringRef Name,
1157 const CodeGenOptions::OptRemark &Remark) {
1158 if (Remark.hasValidPattern()) {
1159 GenerateArg(Args, OptEQ, Remark.Pattern, SA);
1160 } else if (Remark.Kind == CodeGenOptions::RK_Enabled) {
1161 GenerateArg(Args, OPT_R_Joined, Name, SA);
1162 } else if (Remark.Kind == CodeGenOptions::RK_Disabled) {
1163 GenerateArg(Args, OPT_R_Joined, StringRef("no-") + Name, SA);
1164 }
1165 }
1166
1167 /// Parse a remark command line argument. It may be missing, disabled/enabled by
1168 /// '-R[no-]group' or specified with a regular expression by '-Rgroup=regexp'.
1169 /// On top of that, it can be disabled/enabled globally by '-R[no-]everything'.
1170 static CodeGenOptions::OptRemark
ParseOptimizationRemark(DiagnosticsEngine & Diags,ArgList & Args,OptSpecifier OptEQ,StringRef Name)1171 ParseOptimizationRemark(DiagnosticsEngine &Diags, ArgList &Args,
1172 OptSpecifier OptEQ, StringRef Name) {
1173 CodeGenOptions::OptRemark Result;
1174
1175 auto InitializeResultPattern = [&Diags, &Args, &Result](const Arg *A) {
1176 Result.Pattern = A->getValue();
1177
1178 std::string RegexError;
1179 Result.Regex = std::make_shared<llvm::Regex>(Result.Pattern);
1180 if (!Result.Regex->isValid(RegexError)) {
1181 Diags.Report(diag::err_drv_optimization_remark_pattern)
1182 << RegexError << A->getAsString(Args);
1183 return false;
1184 }
1185
1186 return true;
1187 };
1188
1189 for (Arg *A : Args) {
1190 if (A->getOption().matches(OPT_R_Joined)) {
1191 StringRef Value = A->getValue();
1192
1193 if (Value == Name)
1194 Result.Kind = CodeGenOptions::RK_Enabled;
1195 else if (Value == "everything")
1196 Result.Kind = CodeGenOptions::RK_EnabledEverything;
1197 else if (Value.split('-') == std::make_pair(StringRef("no"), Name))
1198 Result.Kind = CodeGenOptions::RK_Disabled;
1199 else if (Value == "no-everything")
1200 Result.Kind = CodeGenOptions::RK_DisabledEverything;
1201 } else if (A->getOption().matches(OptEQ)) {
1202 Result.Kind = CodeGenOptions::RK_WithPattern;
1203 if (!InitializeResultPattern(A))
1204 return CodeGenOptions::OptRemark();
1205 }
1206 }
1207
1208 if (Result.Kind == CodeGenOptions::RK_Disabled ||
1209 Result.Kind == CodeGenOptions::RK_DisabledEverything) {
1210 Result.Pattern = "";
1211 Result.Regex = nullptr;
1212 }
1213
1214 return Result;
1215 }
1216
parseDiagnosticLevelMask(StringRef FlagName,const std::vector<std::string> & Levels,DiagnosticsEngine & Diags,DiagnosticLevelMask & M)1217 static bool parseDiagnosticLevelMask(StringRef FlagName,
1218 const std::vector<std::string> &Levels,
1219 DiagnosticsEngine &Diags,
1220 DiagnosticLevelMask &M) {
1221 bool Success = true;
1222 for (const auto &Level : Levels) {
1223 DiagnosticLevelMask const PM =
1224 llvm::StringSwitch<DiagnosticLevelMask>(Level)
1225 .Case("note", DiagnosticLevelMask::Note)
1226 .Case("remark", DiagnosticLevelMask::Remark)
1227 .Case("warning", DiagnosticLevelMask::Warning)
1228 .Case("error", DiagnosticLevelMask::Error)
1229 .Default(DiagnosticLevelMask::None);
1230 if (PM == DiagnosticLevelMask::None) {
1231 Success = false;
1232 Diags.Report(diag::err_drv_invalid_value) << FlagName << Level;
1233 }
1234 M = M | PM;
1235 }
1236 return Success;
1237 }
1238
parseSanitizerKinds(StringRef FlagName,const std::vector<std::string> & Sanitizers,DiagnosticsEngine & Diags,SanitizerSet & S)1239 static void parseSanitizerKinds(StringRef FlagName,
1240 const std::vector<std::string> &Sanitizers,
1241 DiagnosticsEngine &Diags, SanitizerSet &S) {
1242 for (const auto &Sanitizer : Sanitizers) {
1243 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false);
1244 if (K == SanitizerMask())
1245 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
1246 else
1247 S.set(K, true);
1248 }
1249 }
1250
serializeSanitizerKinds(SanitizerSet S)1251 static SmallVector<StringRef, 4> serializeSanitizerKinds(SanitizerSet S) {
1252 SmallVector<StringRef, 4> Values;
1253 serializeSanitizerSet(S, Values);
1254 return Values;
1255 }
1256
parseXRayInstrumentationBundle(StringRef FlagName,StringRef Bundle,ArgList & Args,DiagnosticsEngine & D,XRayInstrSet & S)1257 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle,
1258 ArgList &Args, DiagnosticsEngine &D,
1259 XRayInstrSet &S) {
1260 llvm::SmallVector<StringRef, 2> BundleParts;
1261 llvm::SplitString(Bundle, BundleParts, ",");
1262 for (const auto &B : BundleParts) {
1263 auto Mask = parseXRayInstrValue(B);
1264 if (Mask == XRayInstrKind::None)
1265 if (B != "none")
1266 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle;
1267 else
1268 S.Mask = Mask;
1269 else if (Mask == XRayInstrKind::All)
1270 S.Mask = Mask;
1271 else
1272 S.set(Mask, true);
1273 }
1274 }
1275
serializeXRayInstrumentationBundle(const XRayInstrSet & S)1276 static std::string serializeXRayInstrumentationBundle(const XRayInstrSet &S) {
1277 llvm::SmallVector<StringRef, 2> BundleParts;
1278 serializeXRayInstrValue(S, BundleParts);
1279 std::string Buffer;
1280 llvm::raw_string_ostream OS(Buffer);
1281 llvm::interleave(BundleParts, OS, [&OS](StringRef Part) { OS << Part; }, ",");
1282 return OS.str();
1283 }
1284
1285 // Set the profile kind using fprofile-instrument-use-path.
setPGOUseInstrumentor(CodeGenOptions & Opts,const Twine & ProfileName)1286 static void setPGOUseInstrumentor(CodeGenOptions &Opts,
1287 const Twine &ProfileName) {
1288 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName);
1289 // In error, return silently and let Clang PGOUse report the error message.
1290 if (auto E = ReaderOrErr.takeError()) {
1291 llvm::consumeError(std::move(E));
1292 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
1293 return;
1294 }
1295 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader =
1296 std::move(ReaderOrErr.get());
1297 if (PGOReader->isIRLevelProfile()) {
1298 if (PGOReader->hasCSIRLevelProfile())
1299 Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr);
1300 else
1301 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr);
1302 } else
1303 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
1304 }
1305
GenerateCodeGenArgs(const CodeGenOptions & Opts,SmallVectorImpl<const char * > & Args,StringAllocator SA,const llvm::Triple & T,const std::string & OutputFile,const LangOptions * LangOpts)1306 void CompilerInvocation::GenerateCodeGenArgs(
1307 const CodeGenOptions &Opts, SmallVectorImpl<const char *> &Args,
1308 StringAllocator SA, const llvm::Triple &T, const std::string &OutputFile,
1309 const LangOptions *LangOpts) {
1310 const CodeGenOptions &CodeGenOpts = Opts;
1311
1312 if (Opts.OptimizationLevel == 0)
1313 GenerateArg(Args, OPT_O0, SA);
1314 else
1315 GenerateArg(Args, OPT_O, Twine(Opts.OptimizationLevel), SA);
1316
1317 #define CODEGEN_OPTION_WITH_MARSHALLING( \
1318 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
1319 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
1320 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
1321 MERGER, EXTRACTOR, TABLE_INDEX) \
1322 GENERATE_OPTION_WITH_MARSHALLING( \
1323 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
1324 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
1325 #include "clang/Driver/Options.inc"
1326 #undef CODEGEN_OPTION_WITH_MARSHALLING
1327
1328 if (Opts.OptimizationLevel > 0) {
1329 if (Opts.Inlining == CodeGenOptions::NormalInlining)
1330 GenerateArg(Args, OPT_finline_functions, SA);
1331 else if (Opts.Inlining == CodeGenOptions::OnlyHintInlining)
1332 GenerateArg(Args, OPT_finline_hint_functions, SA);
1333 else if (Opts.Inlining == CodeGenOptions::OnlyAlwaysInlining)
1334 GenerateArg(Args, OPT_fno_inline, SA);
1335 }
1336
1337 if (Opts.DirectAccessExternalData && LangOpts->PICLevel != 0)
1338 GenerateArg(Args, OPT_fdirect_access_external_data, SA);
1339 else if (!Opts.DirectAccessExternalData && LangOpts->PICLevel == 0)
1340 GenerateArg(Args, OPT_fno_direct_access_external_data, SA);
1341
1342 Optional<StringRef> DebugInfoVal;
1343 switch (Opts.DebugInfo) {
1344 case codegenoptions::DebugLineTablesOnly:
1345 DebugInfoVal = "line-tables-only";
1346 break;
1347 case codegenoptions::DebugDirectivesOnly:
1348 DebugInfoVal = "line-directives-only";
1349 break;
1350 case codegenoptions::DebugInfoConstructor:
1351 DebugInfoVal = "constructor";
1352 break;
1353 case codegenoptions::LimitedDebugInfo:
1354 DebugInfoVal = "limited";
1355 break;
1356 case codegenoptions::FullDebugInfo:
1357 DebugInfoVal = "standalone";
1358 break;
1359 case codegenoptions::UnusedTypeInfo:
1360 DebugInfoVal = "unused-types";
1361 break;
1362 case codegenoptions::NoDebugInfo: // default value
1363 DebugInfoVal = None;
1364 break;
1365 case codegenoptions::LocTrackingOnly: // implied value
1366 DebugInfoVal = None;
1367 break;
1368 }
1369 if (DebugInfoVal)
1370 GenerateArg(Args, OPT_debug_info_kind_EQ, *DebugInfoVal, SA);
1371
1372 if (Opts.DebugInfo == codegenoptions::DebugInfoConstructor)
1373 GenerateArg(Args, OPT_fuse_ctor_homing, SA);
1374
1375 for (const auto &Prefix : Opts.DebugPrefixMap)
1376 GenerateArg(Args, OPT_fdebug_prefix_map_EQ,
1377 Prefix.first + "=" + Prefix.second, SA);
1378
1379 for (const auto &Prefix : Opts.CoveragePrefixMap)
1380 GenerateArg(Args, OPT_fcoverage_prefix_map_EQ,
1381 Prefix.first + "=" + Prefix.second, SA);
1382
1383 if (Opts.NewStructPathTBAA)
1384 GenerateArg(Args, OPT_new_struct_path_tbaa, SA);
1385
1386 if (Opts.OptimizeSize == 1)
1387 GenerateArg(Args, OPT_O, "s", SA);
1388 else if (Opts.OptimizeSize == 2)
1389 GenerateArg(Args, OPT_O, "z", SA);
1390
1391 // SimplifyLibCalls is set only in the absence of -fno-builtin and
1392 // -ffreestanding. We'll consider that when generating them.
1393
1394 // NoBuiltinFuncs are generated by LangOptions.
1395
1396 if (Opts.UnrollLoops && Opts.OptimizationLevel <= 1)
1397 GenerateArg(Args, OPT_funroll_loops, SA);
1398 else if (!Opts.UnrollLoops && Opts.OptimizationLevel > 1)
1399 GenerateArg(Args, OPT_fno_unroll_loops, SA);
1400
1401 if (!Opts.BinutilsVersion.empty())
1402 GenerateArg(Args, OPT_fbinutils_version_EQ, Opts.BinutilsVersion, SA);
1403
1404 if (Opts.DebugNameTable ==
1405 static_cast<unsigned>(llvm::DICompileUnit::DebugNameTableKind::GNU))
1406 GenerateArg(Args, OPT_ggnu_pubnames, SA);
1407 else if (Opts.DebugNameTable ==
1408 static_cast<unsigned>(
1409 llvm::DICompileUnit::DebugNameTableKind::Default))
1410 GenerateArg(Args, OPT_gpubnames, SA);
1411
1412 // ProfileInstrumentUsePath is marshalled automatically, no need to generate
1413 // it or PGOUseInstrumentor.
1414
1415 if (Opts.TimePasses) {
1416 if (Opts.TimePassesPerRun)
1417 GenerateArg(Args, OPT_ftime_report_EQ, "per-pass-run", SA);
1418 else
1419 GenerateArg(Args, OPT_ftime_report, SA);
1420 }
1421
1422 if (Opts.PrepareForLTO && !Opts.PrepareForThinLTO)
1423 GenerateArg(Args, OPT_flto, SA);
1424
1425 if (Opts.PrepareForThinLTO)
1426 GenerateArg(Args, OPT_flto_EQ, "thin", SA);
1427
1428 if (!Opts.ThinLTOIndexFile.empty())
1429 GenerateArg(Args, OPT_fthinlto_index_EQ, Opts.ThinLTOIndexFile, SA);
1430
1431 if (Opts.SaveTempsFilePrefix == OutputFile)
1432 GenerateArg(Args, OPT_save_temps_EQ, "obj", SA);
1433
1434 StringRef MemProfileBasename("memprof.profraw");
1435 if (!Opts.MemoryProfileOutput.empty()) {
1436 if (Opts.MemoryProfileOutput == MemProfileBasename) {
1437 GenerateArg(Args, OPT_fmemory_profile, SA);
1438 } else {
1439 size_t ArgLength =
1440 Opts.MemoryProfileOutput.size() - MemProfileBasename.size();
1441 GenerateArg(Args, OPT_fmemory_profile_EQ,
1442 Opts.MemoryProfileOutput.substr(0, ArgLength), SA);
1443 }
1444 }
1445
1446 if (memcmp(Opts.CoverageVersion, "408*", 4) != 0)
1447 GenerateArg(Args, OPT_coverage_version_EQ,
1448 StringRef(Opts.CoverageVersion, 4), SA);
1449
1450 // TODO: Check if we need to generate arguments stored in CmdArgs. (Namely
1451 // '-fembed_bitcode', which does not map to any CompilerInvocation field and
1452 // won't be generated.)
1453
1454 if (Opts.XRayInstrumentationBundle.Mask != XRayInstrKind::All) {
1455 std::string InstrBundle =
1456 serializeXRayInstrumentationBundle(Opts.XRayInstrumentationBundle);
1457 if (!InstrBundle.empty())
1458 GenerateArg(Args, OPT_fxray_instrumentation_bundle, InstrBundle, SA);
1459 }
1460
1461 if (Opts.CFProtectionReturn && Opts.CFProtectionBranch)
1462 GenerateArg(Args, OPT_fcf_protection_EQ, "full", SA);
1463 else if (Opts.CFProtectionReturn)
1464 GenerateArg(Args, OPT_fcf_protection_EQ, "return", SA);
1465 else if (Opts.CFProtectionBranch)
1466 GenerateArg(Args, OPT_fcf_protection_EQ, "branch", SA);
1467
1468 for (const auto &F : Opts.LinkBitcodeFiles) {
1469 bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded &&
1470 F.PropagateAttrs && F.Internalize;
1471 GenerateArg(Args,
1472 Builtint ? OPT_mlink_builtin_bitcode : OPT_mlink_bitcode_file,
1473 F.Filename, SA);
1474 }
1475
1476 // TODO: Consider removing marshalling annotations from f[no_]emulated_tls.
1477 // That would make it easy to generate the option only **once** if it was
1478 // explicitly set to non-default value.
1479 if (Opts.ExplicitEmulatedTLS) {
1480 GenerateArg(
1481 Args, Opts.EmulatedTLS ? OPT_femulated_tls : OPT_fno_emulated_tls, SA);
1482 }
1483
1484 if (Opts.FPDenormalMode != llvm::DenormalMode::getIEEE())
1485 GenerateArg(Args, OPT_fdenormal_fp_math_EQ, Opts.FPDenormalMode.str(), SA);
1486
1487 if (Opts.FP32DenormalMode != llvm::DenormalMode::getIEEE())
1488 GenerateArg(Args, OPT_fdenormal_fp_math_f32_EQ, Opts.FP32DenormalMode.str(),
1489 SA);
1490
1491 if (Opts.StructReturnConvention == CodeGenOptions::SRCK_OnStack) {
1492 OptSpecifier Opt =
1493 T.isPPC32() ? OPT_maix_struct_return : OPT_fpcc_struct_return;
1494 GenerateArg(Args, Opt, SA);
1495 } else if (Opts.StructReturnConvention == CodeGenOptions::SRCK_InRegs) {
1496 OptSpecifier Opt =
1497 T.isPPC32() ? OPT_msvr4_struct_return : OPT_freg_struct_return;
1498 GenerateArg(Args, Opt, SA);
1499 }
1500
1501 if (Opts.EnableAIXExtendedAltivecABI)
1502 GenerateArg(Args, OPT_mabi_EQ_vec_extabi, SA);
1503
1504 if (!Opts.OptRecordPasses.empty())
1505 GenerateArg(Args, OPT_opt_record_passes, Opts.OptRecordPasses, SA);
1506
1507 if (!Opts.OptRecordFormat.empty())
1508 GenerateArg(Args, OPT_opt_record_format, Opts.OptRecordFormat, SA);
1509
1510 GenerateOptimizationRemark(Args, SA, OPT_Rpass_EQ, "pass",
1511 Opts.OptimizationRemark);
1512
1513 GenerateOptimizationRemark(Args, SA, OPT_Rpass_missed_EQ, "pass-missed",
1514 Opts.OptimizationRemarkMissed);
1515
1516 GenerateOptimizationRemark(Args, SA, OPT_Rpass_analysis_EQ, "pass-analysis",
1517 Opts.OptimizationRemarkAnalysis);
1518
1519 GenerateArg(Args, OPT_fdiagnostics_hotness_threshold_EQ,
1520 Opts.DiagnosticsHotnessThreshold
1521 ? Twine(*Opts.DiagnosticsHotnessThreshold)
1522 : "auto",
1523 SA);
1524
1525 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeRecover))
1526 GenerateArg(Args, OPT_fsanitize_recover_EQ, Sanitizer, SA);
1527
1528 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.SanitizeTrap))
1529 GenerateArg(Args, OPT_fsanitize_trap_EQ, Sanitizer, SA);
1530
1531 if (!Opts.EmitVersionIdentMetadata)
1532 GenerateArg(Args, OPT_Qn, SA);
1533
1534 switch (Opts.FiniteLoops) {
1535 case CodeGenOptions::FiniteLoopsKind::Language:
1536 break;
1537 case CodeGenOptions::FiniteLoopsKind::Always:
1538 GenerateArg(Args, OPT_ffinite_loops, SA);
1539 break;
1540 case CodeGenOptions::FiniteLoopsKind::Never:
1541 GenerateArg(Args, OPT_fno_finite_loops, SA);
1542 break;
1543 }
1544 }
1545
ParseCodeGenArgs(CodeGenOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags,const llvm::Triple & T,const std::string & OutputFile,const LangOptions & LangOptsRef)1546 bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
1547 InputKind IK,
1548 DiagnosticsEngine &Diags,
1549 const llvm::Triple &T,
1550 const std::string &OutputFile,
1551 const LangOptions &LangOptsRef) {
1552 unsigned NumErrorsBefore = Diags.getNumErrors();
1553
1554 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
1555 // TODO: This could be done in Driver
1556 unsigned MaxOptLevel = 3;
1557 if (OptimizationLevel > MaxOptLevel) {
1558 // If the optimization level is not supported, fall back on the default
1559 // optimization
1560 Diags.Report(diag::warn_drv_optimization_value)
1561 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
1562 OptimizationLevel = MaxOptLevel;
1563 }
1564 Opts.OptimizationLevel = OptimizationLevel;
1565
1566 // The key paths of codegen options defined in Options.td start with
1567 // "CodeGenOpts.". Let's provide the expected variable name and type.
1568 CodeGenOptions &CodeGenOpts = Opts;
1569 // Some codegen options depend on language options. Let's provide the expected
1570 // variable name and type.
1571 const LangOptions *LangOpts = &LangOptsRef;
1572
1573 #define CODEGEN_OPTION_WITH_MARSHALLING( \
1574 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
1575 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
1576 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
1577 MERGER, EXTRACTOR, TABLE_INDEX) \
1578 PARSE_OPTION_WITH_MARSHALLING( \
1579 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
1580 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
1581 #include "clang/Driver/Options.inc"
1582 #undef CODEGEN_OPTION_WITH_MARSHALLING
1583
1584 // At O0 we want to fully disable inlining outside of cases marked with
1585 // 'alwaysinline' that are required for correctness.
1586 Opts.setInlining((Opts.OptimizationLevel == 0)
1587 ? CodeGenOptions::OnlyAlwaysInlining
1588 : CodeGenOptions::NormalInlining);
1589 // Explicit inlining flags can disable some or all inlining even at
1590 // optimization levels above zero.
1591 if (Arg *InlineArg = Args.getLastArg(
1592 options::OPT_finline_functions, options::OPT_finline_hint_functions,
1593 options::OPT_fno_inline_functions, options::OPT_fno_inline)) {
1594 if (Opts.OptimizationLevel > 0) {
1595 const Option &InlineOpt = InlineArg->getOption();
1596 if (InlineOpt.matches(options::OPT_finline_functions))
1597 Opts.setInlining(CodeGenOptions::NormalInlining);
1598 else if (InlineOpt.matches(options::OPT_finline_hint_functions))
1599 Opts.setInlining(CodeGenOptions::OnlyHintInlining);
1600 else
1601 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining);
1602 }
1603 }
1604
1605 // PIC defaults to -fno-direct-access-external-data while non-PIC defaults to
1606 // -fdirect-access-external-data.
1607 Opts.DirectAccessExternalData =
1608 Args.hasArg(OPT_fdirect_access_external_data) ||
1609 (!Args.hasArg(OPT_fno_direct_access_external_data) &&
1610 LangOpts->PICLevel == 0);
1611
1612 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) {
1613 unsigned Val =
1614 llvm::StringSwitch<unsigned>(A->getValue())
1615 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly)
1616 .Case("line-directives-only", codegenoptions::DebugDirectivesOnly)
1617 .Case("constructor", codegenoptions::DebugInfoConstructor)
1618 .Case("limited", codegenoptions::LimitedDebugInfo)
1619 .Case("standalone", codegenoptions::FullDebugInfo)
1620 .Case("unused-types", codegenoptions::UnusedTypeInfo)
1621 .Default(~0U);
1622 if (Val == ~0U)
1623 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
1624 << A->getValue();
1625 else
1626 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val));
1627 }
1628
1629 // If -fuse-ctor-homing is set and limited debug info is already on, then use
1630 // constructor homing.
1631 if (Args.getLastArg(OPT_fuse_ctor_homing))
1632 if (Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo)
1633 Opts.setDebugInfo(codegenoptions::DebugInfoConstructor);
1634
1635 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ)) {
1636 auto Split = StringRef(Arg).split('=');
1637 Opts.DebugPrefixMap.insert(
1638 {std::string(Split.first), std::string(Split.second)});
1639 }
1640
1641 for (const auto &Arg : Args.getAllArgValues(OPT_fcoverage_prefix_map_EQ)) {
1642 auto Split = StringRef(Arg).split('=');
1643 Opts.CoveragePrefixMap.insert(
1644 {std::string(Split.first), std::string(Split.second)});
1645 }
1646
1647 const llvm::Triple::ArchType DebugEntryValueArchs[] = {
1648 llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64,
1649 llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips,
1650 llvm::Triple::mipsel, llvm::Triple::mips64, llvm::Triple::mips64el};
1651
1652 if (Opts.OptimizationLevel > 0 && Opts.hasReducedDebugInfo() &&
1653 llvm::is_contained(DebugEntryValueArchs, T.getArch()))
1654 Opts.EmitCallSiteInfo = true;
1655
1656 if (!Opts.EnableDIPreservationVerify && Opts.DIBugsReportFilePath.size()) {
1657 Diags.Report(diag::warn_ignoring_verify_debuginfo_preserve_export)
1658 << Opts.DIBugsReportFilePath;
1659 Opts.DIBugsReportFilePath = "";
1660 }
1661
1662 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) &&
1663 Args.hasArg(OPT_new_struct_path_tbaa);
1664 Opts.OptimizeSize = getOptimizationLevelSize(Args);
1665 Opts.SimplifyLibCalls = !LangOpts->NoBuiltin;
1666 if (Opts.SimplifyLibCalls)
1667 Opts.NoBuiltinFuncs = LangOpts->NoBuiltinFuncs;
1668 Opts.UnrollLoops =
1669 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
1670 (Opts.OptimizationLevel > 1));
1671 Opts.BinutilsVersion =
1672 std::string(Args.getLastArgValue(OPT_fbinutils_version_EQ));
1673
1674 Opts.DebugNameTable = static_cast<unsigned>(
1675 Args.hasArg(OPT_ggnu_pubnames)
1676 ? llvm::DICompileUnit::DebugNameTableKind::GNU
1677 : Args.hasArg(OPT_gpubnames)
1678 ? llvm::DICompileUnit::DebugNameTableKind::Default
1679 : llvm::DICompileUnit::DebugNameTableKind::None);
1680
1681 if (!Opts.ProfileInstrumentUsePath.empty())
1682 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
1683
1684 if (const Arg *A = Args.getLastArg(OPT_ftime_report, OPT_ftime_report_EQ)) {
1685 Opts.TimePasses = true;
1686
1687 // -ftime-report= is only for new pass manager.
1688 if (A->getOption().getID() == OPT_ftime_report_EQ) {
1689 if (Opts.LegacyPassManager)
1690 Diags.Report(diag::err_drv_argument_only_allowed_with)
1691 << A->getAsString(Args) << "-fno-legacy-pass-manager";
1692
1693 StringRef Val = A->getValue();
1694 if (Val == "per-pass")
1695 Opts.TimePassesPerRun = false;
1696 else if (Val == "per-pass-run")
1697 Opts.TimePassesPerRun = true;
1698 else
1699 Diags.Report(diag::err_drv_invalid_value)
1700 << A->getAsString(Args) << A->getValue();
1701 }
1702 }
1703
1704 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
1705 Opts.PrepareForThinLTO = false;
1706 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) {
1707 StringRef S = A->getValue();
1708 if (S == "thin")
1709 Opts.PrepareForThinLTO = true;
1710 else if (S != "full")
1711 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S;
1712 }
1713 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
1714 if (IK.getLanguage() != Language::LLVM_IR)
1715 Diags.Report(diag::err_drv_argument_only_allowed_with)
1716 << A->getAsString(Args) << "-x ir";
1717 Opts.ThinLTOIndexFile =
1718 std::string(Args.getLastArgValue(OPT_fthinlto_index_EQ));
1719 }
1720 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ))
1721 Opts.SaveTempsFilePrefix =
1722 llvm::StringSwitch<std::string>(A->getValue())
1723 .Case("obj", OutputFile)
1724 .Default(llvm::sys::path::filename(OutputFile).str());
1725
1726 // The memory profile runtime appends the pid to make this name more unique.
1727 const char *MemProfileBasename = "memprof.profraw";
1728 if (Args.hasArg(OPT_fmemory_profile_EQ)) {
1729 SmallString<128> Path(
1730 std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ)));
1731 llvm::sys::path::append(Path, MemProfileBasename);
1732 Opts.MemoryProfileOutput = std::string(Path);
1733 } else if (Args.hasArg(OPT_fmemory_profile))
1734 Opts.MemoryProfileOutput = MemProfileBasename;
1735
1736 memcpy(Opts.CoverageVersion, "408*", 4);
1737 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
1738 if (Args.hasArg(OPT_coverage_version_EQ)) {
1739 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
1740 if (CoverageVersion.size() != 4) {
1741 Diags.Report(diag::err_drv_invalid_value)
1742 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
1743 << CoverageVersion;
1744 } else {
1745 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
1746 }
1747 }
1748 }
1749 // FIXME: For backend options that are not yet recorded as function
1750 // attributes in the IR, keep track of them so we can embed them in a
1751 // separate data section and use them when building the bitcode.
1752 for (const auto &A : Args) {
1753 // Do not encode output and input.
1754 if (A->getOption().getID() == options::OPT_o ||
1755 A->getOption().getID() == options::OPT_INPUT ||
1756 A->getOption().getID() == options::OPT_x ||
1757 A->getOption().getID() == options::OPT_fembed_bitcode ||
1758 A->getOption().matches(options::OPT_W_Group))
1759 continue;
1760 ArgStringList ASL;
1761 A->render(Args, ASL);
1762 for (const auto &arg : ASL) {
1763 StringRef ArgStr(arg);
1764 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
1765 // using \00 to separate each commandline options.
1766 Opts.CmdArgs.push_back('\0');
1767 }
1768 }
1769
1770 auto XRayInstrBundles =
1771 Args.getAllArgValues(OPT_fxray_instrumentation_bundle);
1772 if (XRayInstrBundles.empty())
1773 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All;
1774 else
1775 for (const auto &A : XRayInstrBundles)
1776 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args,
1777 Diags, Opts.XRayInstrumentationBundle);
1778
1779 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
1780 StringRef Name = A->getValue();
1781 if (Name == "full") {
1782 Opts.CFProtectionReturn = 1;
1783 Opts.CFProtectionBranch = 1;
1784 } else if (Name == "return")
1785 Opts.CFProtectionReturn = 1;
1786 else if (Name == "branch")
1787 Opts.CFProtectionBranch = 1;
1788 else if (Name != "none")
1789 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1790 }
1791
1792 for (auto *A :
1793 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) {
1794 CodeGenOptions::BitcodeFileToLink F;
1795 F.Filename = A->getValue();
1796 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) {
1797 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
1798 // When linking CUDA bitcode, propagate function attributes so that
1799 // e.g. libdevice gets fast-math attrs if we're building with fast-math.
1800 F.PropagateAttrs = true;
1801 F.Internalize = true;
1802 }
1803 Opts.LinkBitcodeFiles.push_back(F);
1804 }
1805
1806 if (Args.getLastArg(OPT_femulated_tls) ||
1807 Args.getLastArg(OPT_fno_emulated_tls)) {
1808 Opts.ExplicitEmulatedTLS = true;
1809 }
1810
1811 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
1812 if (T.isOSAIX()) {
1813 StringRef Name = A->getValue();
1814 if (Name != "global-dynamic")
1815 Diags.Report(diag::err_aix_unsupported_tls_model) << Name;
1816 }
1817 }
1818
1819 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) {
1820 StringRef Val = A->getValue();
1821 Opts.FPDenormalMode = llvm::parseDenormalFPAttribute(Val);
1822 if (!Opts.FPDenormalMode.isValid())
1823 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
1824 }
1825
1826 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_f32_EQ)) {
1827 StringRef Val = A->getValue();
1828 Opts.FP32DenormalMode = llvm::parseDenormalFPAttribute(Val);
1829 if (!Opts.FP32DenormalMode.isValid())
1830 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
1831 }
1832
1833 // X86_32 has -fppc-struct-return and -freg-struct-return.
1834 // PPC32 has -maix-struct-return and -msvr4-struct-return.
1835 if (Arg *A =
1836 Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return,
1837 OPT_maix_struct_return, OPT_msvr4_struct_return)) {
1838 // TODO: We might want to consider enabling these options on AIX in the
1839 // future.
1840 if (T.isOSAIX())
1841 Diags.Report(diag::err_drv_unsupported_opt_for_target)
1842 << A->getSpelling() << T.str();
1843
1844 const Option &O = A->getOption();
1845 if (O.matches(OPT_fpcc_struct_return) ||
1846 O.matches(OPT_maix_struct_return)) {
1847 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
1848 } else {
1849 assert(O.matches(OPT_freg_struct_return) ||
1850 O.matches(OPT_msvr4_struct_return));
1851 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
1852 }
1853 }
1854
1855 if (Arg *A =
1856 Args.getLastArg(OPT_mabi_EQ_vec_default, OPT_mabi_EQ_vec_extabi)) {
1857 if (!T.isOSAIX())
1858 Diags.Report(diag::err_drv_unsupported_opt_for_target)
1859 << A->getSpelling() << T.str();
1860
1861 const Option &O = A->getOption();
1862 if (O.matches(OPT_mabi_EQ_vec_default))
1863 Diags.Report(diag::err_aix_default_altivec_abi)
1864 << A->getSpelling() << T.str();
1865 else {
1866 assert(O.matches(OPT_mabi_EQ_vec_extabi));
1867 Opts.EnableAIXExtendedAltivecABI = 1;
1868 }
1869 }
1870
1871 bool NeedLocTracking = false;
1872
1873 if (!Opts.OptRecordFile.empty())
1874 NeedLocTracking = true;
1875
1876 if (Arg *A = Args.getLastArg(OPT_opt_record_passes)) {
1877 Opts.OptRecordPasses = A->getValue();
1878 NeedLocTracking = true;
1879 }
1880
1881 if (Arg *A = Args.getLastArg(OPT_opt_record_format)) {
1882 Opts.OptRecordFormat = A->getValue();
1883 NeedLocTracking = true;
1884 }
1885
1886 Opts.OptimizationRemark =
1887 ParseOptimizationRemark(Diags, Args, OPT_Rpass_EQ, "pass");
1888
1889 Opts.OptimizationRemarkMissed =
1890 ParseOptimizationRemark(Diags, Args, OPT_Rpass_missed_EQ, "pass-missed");
1891
1892 Opts.OptimizationRemarkAnalysis = ParseOptimizationRemark(
1893 Diags, Args, OPT_Rpass_analysis_EQ, "pass-analysis");
1894
1895 NeedLocTracking |= Opts.OptimizationRemark.hasValidPattern() ||
1896 Opts.OptimizationRemarkMissed.hasValidPattern() ||
1897 Opts.OptimizationRemarkAnalysis.hasValidPattern();
1898
1899 bool UsingSampleProfile = !Opts.SampleProfileFile.empty();
1900 bool UsingProfile = UsingSampleProfile ||
1901 (Opts.getProfileUse() != CodeGenOptions::ProfileNone);
1902
1903 if (Opts.DiagnosticsWithHotness && !UsingProfile &&
1904 // An IR file will contain PGO as metadata
1905 IK.getLanguage() != Language::LLVM_IR)
1906 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
1907 << "-fdiagnostics-show-hotness";
1908
1909 // Parse remarks hotness threshold. Valid value is either integer or 'auto'.
1910 if (auto *arg =
1911 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
1912 auto ResultOrErr =
1913 llvm::remarks::parseHotnessThresholdOption(arg->getValue());
1914
1915 if (!ResultOrErr) {
1916 Diags.Report(diag::err_drv_invalid_diagnotics_hotness_threshold)
1917 << "-fdiagnostics-hotness-threshold=";
1918 } else {
1919 Opts.DiagnosticsHotnessThreshold = *ResultOrErr;
1920 if ((!Opts.DiagnosticsHotnessThreshold.hasValue() ||
1921 Opts.DiagnosticsHotnessThreshold.getValue() > 0) &&
1922 !UsingProfile)
1923 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
1924 << "-fdiagnostics-hotness-threshold=";
1925 }
1926 }
1927
1928 // If the user requested to use a sample profile for PGO, then the
1929 // backend will need to track source location information so the profile
1930 // can be incorporated into the IR.
1931 if (UsingSampleProfile)
1932 NeedLocTracking = true;
1933
1934 if (!Opts.StackUsageOutput.empty())
1935 NeedLocTracking = true;
1936
1937 // If the user requested a flag that requires source locations available in
1938 // the backend, make sure that the backend tracks source location information.
1939 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
1940 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
1941
1942 // Parse -fsanitize-recover= arguments.
1943 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
1944 parseSanitizerKinds("-fsanitize-recover=",
1945 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
1946 Opts.SanitizeRecover);
1947 parseSanitizerKinds("-fsanitize-trap=",
1948 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
1949 Opts.SanitizeTrap);
1950
1951 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true);
1952
1953 if (Args.hasArg(options::OPT_ffinite_loops))
1954 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Always;
1955 else if (Args.hasArg(options::OPT_fno_finite_loops))
1956 Opts.FiniteLoops = CodeGenOptions::FiniteLoopsKind::Never;
1957
1958 Opts.EmitIEEENaNCompliantInsts =
1959 Args.hasFlag(options::OPT_mamdgpu_ieee, options::OPT_mno_amdgpu_ieee);
1960 if (!Opts.EmitIEEENaNCompliantInsts && !LangOptsRef.NoHonorNaNs)
1961 Diags.Report(diag::err_drv_amdgpu_ieee_without_no_honor_nans);
1962
1963 return Diags.getNumErrors() == NumErrorsBefore;
1964 }
1965
1966 static void
GenerateDependencyOutputArgs(const DependencyOutputOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA)1967 GenerateDependencyOutputArgs(const DependencyOutputOptions &Opts,
1968 SmallVectorImpl<const char *> &Args,
1969 CompilerInvocation::StringAllocator SA) {
1970 const DependencyOutputOptions &DependencyOutputOpts = Opts;
1971 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \
1972 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
1973 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
1974 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
1975 MERGER, EXTRACTOR, TABLE_INDEX) \
1976 GENERATE_OPTION_WITH_MARSHALLING( \
1977 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
1978 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
1979 #include "clang/Driver/Options.inc"
1980 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING
1981
1982 if (Opts.ShowIncludesDest != ShowIncludesDestination::None)
1983 GenerateArg(Args, OPT_show_includes, SA);
1984
1985 for (const auto &Dep : Opts.ExtraDeps) {
1986 switch (Dep.second) {
1987 case EDK_SanitizeIgnorelist:
1988 // Sanitizer ignorelist arguments are generated from LanguageOptions.
1989 continue;
1990 case EDK_ModuleFile:
1991 // Module file arguments are generated from FrontendOptions and
1992 // HeaderSearchOptions.
1993 continue;
1994 case EDK_ProfileList:
1995 // Profile list arguments are generated from LanguageOptions via the
1996 // marshalling infrastructure.
1997 continue;
1998 case EDK_DepFileEntry:
1999 GenerateArg(Args, OPT_fdepfile_entry, Dep.first, SA);
2000 break;
2001 }
2002 }
2003 }
2004
ParseDependencyOutputArgs(DependencyOutputOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags,frontend::ActionKind Action,bool ShowLineMarkers)2005 static bool ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
2006 ArgList &Args, DiagnosticsEngine &Diags,
2007 frontend::ActionKind Action,
2008 bool ShowLineMarkers) {
2009 unsigned NumErrorsBefore = Diags.getNumErrors();
2010
2011 DependencyOutputOptions &DependencyOutputOpts = Opts;
2012 #define DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING( \
2013 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2014 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2015 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2016 MERGER, EXTRACTOR, TABLE_INDEX) \
2017 PARSE_OPTION_WITH_MARSHALLING( \
2018 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
2019 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
2020 #include "clang/Driver/Options.inc"
2021 #undef DEPENDENCY_OUTPUT_OPTION_WITH_MARSHALLING
2022
2023 if (Args.hasArg(OPT_show_includes)) {
2024 // Writing both /showIncludes and preprocessor output to stdout
2025 // would produce interleaved output, so use stderr for /showIncludes.
2026 // This behaves the same as cl.exe, when /E, /EP or /P are passed.
2027 if (Action == frontend::PrintPreprocessedInput || !ShowLineMarkers)
2028 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr;
2029 else
2030 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout;
2031 } else {
2032 Opts.ShowIncludesDest = ShowIncludesDestination::None;
2033 }
2034
2035 // Add sanitizer ignorelists as extra dependencies.
2036 // They won't be discovered by the regular preprocessor, so
2037 // we let make / ninja to know about this implicit dependency.
2038 if (!Args.hasArg(OPT_fno_sanitize_ignorelist)) {
2039 for (const auto *A : Args.filtered(OPT_fsanitize_ignorelist_EQ)) {
2040 StringRef Val = A->getValue();
2041 if (Val.find('=') == StringRef::npos)
2042 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist);
2043 }
2044 if (Opts.IncludeSystemHeaders) {
2045 for (const auto *A : Args.filtered(OPT_fsanitize_system_ignorelist_EQ)) {
2046 StringRef Val = A->getValue();
2047 if (Val.find('=') == StringRef::npos)
2048 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_SanitizeIgnorelist);
2049 }
2050 }
2051 }
2052
2053 // -fprofile-list= dependencies.
2054 for (const auto &Filename : Args.getAllArgValues(OPT_fprofile_list_EQ))
2055 Opts.ExtraDeps.emplace_back(Filename, EDK_ProfileList);
2056
2057 // Propagate the extra dependencies.
2058 for (const auto *A : Args.filtered(OPT_fdepfile_entry))
2059 Opts.ExtraDeps.emplace_back(A->getValue(), EDK_DepFileEntry);
2060
2061 // Only the -fmodule-file=<file> form.
2062 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
2063 StringRef Val = A->getValue();
2064 if (Val.find('=') == StringRef::npos)
2065 Opts.ExtraDeps.emplace_back(std::string(Val), EDK_ModuleFile);
2066 }
2067
2068 return Diags.getNumErrors() == NumErrorsBefore;
2069 }
2070
parseShowColorsArgs(const ArgList & Args,bool DefaultColor)2071 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) {
2072 // Color diagnostics default to auto ("on" if terminal supports) in the driver
2073 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
2074 // Support both clang's -f[no-]color-diagnostics and gcc's
2075 // -f[no-]diagnostics-colors[=never|always|auto].
2076 enum {
2077 Colors_On,
2078 Colors_Off,
2079 Colors_Auto
2080 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off;
2081 for (auto *A : Args) {
2082 const Option &O = A->getOption();
2083 if (O.matches(options::OPT_fcolor_diagnostics) ||
2084 O.matches(options::OPT_fdiagnostics_color)) {
2085 ShowColors = Colors_On;
2086 } else if (O.matches(options::OPT_fno_color_diagnostics) ||
2087 O.matches(options::OPT_fno_diagnostics_color)) {
2088 ShowColors = Colors_Off;
2089 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
2090 StringRef Value(A->getValue());
2091 if (Value == "always")
2092 ShowColors = Colors_On;
2093 else if (Value == "never")
2094 ShowColors = Colors_Off;
2095 else if (Value == "auto")
2096 ShowColors = Colors_Auto;
2097 }
2098 }
2099 return ShowColors == Colors_On ||
2100 (ShowColors == Colors_Auto &&
2101 llvm::sys::Process::StandardErrHasColors());
2102 }
2103
checkVerifyPrefixes(const std::vector<std::string> & VerifyPrefixes,DiagnosticsEngine & Diags)2104 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes,
2105 DiagnosticsEngine &Diags) {
2106 bool Success = true;
2107 for (const auto &Prefix : VerifyPrefixes) {
2108 // Every prefix must start with a letter and contain only alphanumeric
2109 // characters, hyphens, and underscores.
2110 auto BadChar = llvm::find_if(Prefix, [](char C) {
2111 return !isAlphanumeric(C) && C != '-' && C != '_';
2112 });
2113 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) {
2114 Success = false;
2115 Diags.Report(diag::err_drv_invalid_value) << "-verify=" << Prefix;
2116 Diags.Report(diag::note_drv_verify_prefix_spelling);
2117 }
2118 }
2119 return Success;
2120 }
2121
GenerateFileSystemArgs(const FileSystemOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA)2122 static void GenerateFileSystemArgs(const FileSystemOptions &Opts,
2123 SmallVectorImpl<const char *> &Args,
2124 CompilerInvocation::StringAllocator SA) {
2125 const FileSystemOptions &FileSystemOpts = Opts;
2126
2127 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \
2128 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2129 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2130 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2131 MERGER, EXTRACTOR, TABLE_INDEX) \
2132 GENERATE_OPTION_WITH_MARSHALLING( \
2133 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
2134 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
2135 #include "clang/Driver/Options.inc"
2136 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING
2137 }
2138
ParseFileSystemArgs(FileSystemOptions & Opts,const ArgList & Args,DiagnosticsEngine & Diags)2139 static bool ParseFileSystemArgs(FileSystemOptions &Opts, const ArgList &Args,
2140 DiagnosticsEngine &Diags) {
2141 unsigned NumErrorsBefore = Diags.getNumErrors();
2142
2143 FileSystemOptions &FileSystemOpts = Opts;
2144
2145 #define FILE_SYSTEM_OPTION_WITH_MARSHALLING( \
2146 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2147 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2148 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2149 MERGER, EXTRACTOR, TABLE_INDEX) \
2150 PARSE_OPTION_WITH_MARSHALLING( \
2151 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
2152 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
2153 #include "clang/Driver/Options.inc"
2154 #undef FILE_SYSTEM_OPTION_WITH_MARSHALLING
2155
2156 return Diags.getNumErrors() == NumErrorsBefore;
2157 }
2158
GenerateMigratorArgs(const MigratorOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA)2159 static void GenerateMigratorArgs(const MigratorOptions &Opts,
2160 SmallVectorImpl<const char *> &Args,
2161 CompilerInvocation::StringAllocator SA) {
2162 const MigratorOptions &MigratorOpts = Opts;
2163 #define MIGRATOR_OPTION_WITH_MARSHALLING( \
2164 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2165 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2166 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2167 MERGER, EXTRACTOR, TABLE_INDEX) \
2168 GENERATE_OPTION_WITH_MARSHALLING( \
2169 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
2170 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
2171 #include "clang/Driver/Options.inc"
2172 #undef MIGRATOR_OPTION_WITH_MARSHALLING
2173 }
2174
ParseMigratorArgs(MigratorOptions & Opts,const ArgList & Args,DiagnosticsEngine & Diags)2175 static bool ParseMigratorArgs(MigratorOptions &Opts, const ArgList &Args,
2176 DiagnosticsEngine &Diags) {
2177 unsigned NumErrorsBefore = Diags.getNumErrors();
2178
2179 MigratorOptions &MigratorOpts = Opts;
2180
2181 #define MIGRATOR_OPTION_WITH_MARSHALLING( \
2182 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2183 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2184 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2185 MERGER, EXTRACTOR, TABLE_INDEX) \
2186 PARSE_OPTION_WITH_MARSHALLING( \
2187 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
2188 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
2189 #include "clang/Driver/Options.inc"
2190 #undef MIGRATOR_OPTION_WITH_MARSHALLING
2191
2192 return Diags.getNumErrors() == NumErrorsBefore;
2193 }
2194
GenerateDiagnosticArgs(const DiagnosticOptions & Opts,SmallVectorImpl<const char * > & Args,StringAllocator SA,bool DefaultDiagColor)2195 void CompilerInvocation::GenerateDiagnosticArgs(
2196 const DiagnosticOptions &Opts, SmallVectorImpl<const char *> &Args,
2197 StringAllocator SA, bool DefaultDiagColor) {
2198 const DiagnosticOptions *DiagnosticOpts = &Opts;
2199 #define DIAG_OPTION_WITH_MARSHALLING( \
2200 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2201 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2202 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2203 MERGER, EXTRACTOR, TABLE_INDEX) \
2204 GENERATE_OPTION_WITH_MARSHALLING( \
2205 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
2206 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
2207 #include "clang/Driver/Options.inc"
2208 #undef DIAG_OPTION_WITH_MARSHALLING
2209
2210 if (!Opts.DiagnosticSerializationFile.empty())
2211 GenerateArg(Args, OPT_diagnostic_serialized_file,
2212 Opts.DiagnosticSerializationFile, SA);
2213
2214 if (Opts.ShowColors)
2215 GenerateArg(Args, OPT_fcolor_diagnostics, SA);
2216
2217 if (Opts.VerifyDiagnostics &&
2218 llvm::is_contained(Opts.VerifyPrefixes, "expected"))
2219 GenerateArg(Args, OPT_verify, SA);
2220
2221 for (const auto &Prefix : Opts.VerifyPrefixes)
2222 if (Prefix != "expected")
2223 GenerateArg(Args, OPT_verify_EQ, Prefix, SA);
2224
2225 DiagnosticLevelMask VIU = Opts.getVerifyIgnoreUnexpected();
2226 if (VIU == DiagnosticLevelMask::None) {
2227 // This is the default, don't generate anything.
2228 } else if (VIU == DiagnosticLevelMask::All) {
2229 GenerateArg(Args, OPT_verify_ignore_unexpected, SA);
2230 } else {
2231 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Note) != 0)
2232 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "note", SA);
2233 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Remark) != 0)
2234 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "remark", SA);
2235 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Warning) != 0)
2236 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "warning", SA);
2237 if (static_cast<unsigned>(VIU & DiagnosticLevelMask::Error) != 0)
2238 GenerateArg(Args, OPT_verify_ignore_unexpected_EQ, "error", SA);
2239 }
2240
2241 for (const auto &Warning : Opts.Warnings) {
2242 // This option is automatically generated from UndefPrefixes.
2243 if (Warning == "undef-prefix")
2244 continue;
2245 Args.push_back(SA(StringRef("-W") + Warning));
2246 }
2247
2248 for (const auto &Remark : Opts.Remarks) {
2249 // These arguments are generated from OptimizationRemark fields of
2250 // CodeGenOptions.
2251 StringRef IgnoredRemarks[] = {"pass", "no-pass",
2252 "pass-analysis", "no-pass-analysis",
2253 "pass-missed", "no-pass-missed"};
2254 if (llvm::is_contained(IgnoredRemarks, Remark))
2255 continue;
2256
2257 Args.push_back(SA(StringRef("-R") + Remark));
2258 }
2259 }
2260
ParseDiagnosticArgs(DiagnosticOptions & Opts,ArgList & Args,DiagnosticsEngine * Diags,bool DefaultDiagColor)2261 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
2262 DiagnosticsEngine *Diags,
2263 bool DefaultDiagColor) {
2264 Optional<DiagnosticsEngine> IgnoringDiags;
2265 if (!Diags) {
2266 IgnoringDiags.emplace(new DiagnosticIDs(), new DiagnosticOptions(),
2267 new IgnoringDiagConsumer());
2268 Diags = &*IgnoringDiags;
2269 }
2270
2271 unsigned NumErrorsBefore = Diags->getNumErrors();
2272
2273 // The key paths of diagnostic options defined in Options.td start with
2274 // "DiagnosticOpts->". Let's provide the expected variable name and type.
2275 DiagnosticOptions *DiagnosticOpts = &Opts;
2276
2277 #define DIAG_OPTION_WITH_MARSHALLING( \
2278 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2279 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2280 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2281 MERGER, EXTRACTOR, TABLE_INDEX) \
2282 PARSE_OPTION_WITH_MARSHALLING( \
2283 Args, *Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
2284 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
2285 #include "clang/Driver/Options.inc"
2286 #undef DIAG_OPTION_WITH_MARSHALLING
2287
2288 llvm::sys::Process::UseANSIEscapeCodes(Opts.UseANSIEscapeCodes);
2289
2290 if (Arg *A =
2291 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
2292 Opts.DiagnosticSerializationFile = A->getValue();
2293 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor);
2294
2295 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ);
2296 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ);
2297 if (Args.hasArg(OPT_verify))
2298 Opts.VerifyPrefixes.push_back("expected");
2299 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and
2300 // then sort it to prepare for fast lookup using std::binary_search.
2301 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, *Diags))
2302 Opts.VerifyDiagnostics = false;
2303 else
2304 llvm::sort(Opts.VerifyPrefixes);
2305 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
2306 parseDiagnosticLevelMask(
2307 "-verify-ignore-unexpected=",
2308 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), *Diags, DiagMask);
2309 if (Args.hasArg(OPT_verify_ignore_unexpected))
2310 DiagMask = DiagnosticLevelMask::All;
2311 Opts.setVerifyIgnoreUnexpected(DiagMask);
2312 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
2313 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
2314 Diags->Report(diag::warn_ignoring_ftabstop_value)
2315 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
2316 }
2317
2318 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
2319 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
2320
2321 return Diags->getNumErrors() == NumErrorsBefore;
2322 }
2323
2324 /// Parse the argument to the -ftest-module-file-extension
2325 /// command-line argument.
2326 ///
2327 /// \returns true on error, false on success.
parseTestModuleFileExtensionArg(StringRef Arg,std::string & BlockName,unsigned & MajorVersion,unsigned & MinorVersion,bool & Hashed,std::string & UserInfo)2328 static bool parseTestModuleFileExtensionArg(StringRef Arg,
2329 std::string &BlockName,
2330 unsigned &MajorVersion,
2331 unsigned &MinorVersion,
2332 bool &Hashed,
2333 std::string &UserInfo) {
2334 SmallVector<StringRef, 5> Args;
2335 Arg.split(Args, ':', 5);
2336 if (Args.size() < 5)
2337 return true;
2338
2339 BlockName = std::string(Args[0]);
2340 if (Args[1].getAsInteger(10, MajorVersion)) return true;
2341 if (Args[2].getAsInteger(10, MinorVersion)) return true;
2342 if (Args[3].getAsInteger(2, Hashed)) return true;
2343 if (Args.size() > 4)
2344 UserInfo = std::string(Args[4]);
2345 return false;
2346 }
2347
2348 /// Return a table that associates command line option specifiers with the
2349 /// frontend action. Note: The pair {frontend::PluginAction, OPT_plugin} is
2350 /// intentionally missing, as this case is handled separately from other
2351 /// frontend options.
getFrontendActionTable()2352 static const auto &getFrontendActionTable() {
2353 static const std::pair<frontend::ActionKind, unsigned> Table[] = {
2354 {frontend::ASTDeclList, OPT_ast_list},
2355
2356 {frontend::ASTDump, OPT_ast_dump_all_EQ},
2357 {frontend::ASTDump, OPT_ast_dump_all},
2358 {frontend::ASTDump, OPT_ast_dump_EQ},
2359 {frontend::ASTDump, OPT_ast_dump},
2360 {frontend::ASTDump, OPT_ast_dump_lookups},
2361 {frontend::ASTDump, OPT_ast_dump_decl_types},
2362
2363 {frontend::ASTPrint, OPT_ast_print},
2364 {frontend::ASTView, OPT_ast_view},
2365 {frontend::DumpCompilerOptions, OPT_compiler_options_dump},
2366 {frontend::DumpRawTokens, OPT_dump_raw_tokens},
2367 {frontend::DumpTokens, OPT_dump_tokens},
2368 {frontend::EmitAssembly, OPT_S},
2369 {frontend::EmitBC, OPT_emit_llvm_bc},
2370 {frontend::EmitHTML, OPT_emit_html},
2371 {frontend::EmitLLVM, OPT_emit_llvm},
2372 {frontend::EmitLLVMOnly, OPT_emit_llvm_only},
2373 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only},
2374 {frontend::EmitCodeGenOnly, OPT_emit_codegen_only},
2375 {frontend::EmitObj, OPT_emit_obj},
2376
2377 {frontend::FixIt, OPT_fixit_EQ},
2378 {frontend::FixIt, OPT_fixit},
2379
2380 {frontend::GenerateModule, OPT_emit_module},
2381 {frontend::GenerateModuleInterface, OPT_emit_module_interface},
2382 {frontend::GenerateHeaderModule, OPT_emit_header_module},
2383 {frontend::GeneratePCH, OPT_emit_pch},
2384 {frontend::GenerateInterfaceStubs, OPT_emit_interface_stubs},
2385 {frontend::InitOnly, OPT_init_only},
2386 {frontend::ParseSyntaxOnly, OPT_fsyntax_only},
2387 {frontend::ModuleFileInfo, OPT_module_file_info},
2388 {frontend::VerifyPCH, OPT_verify_pch},
2389 {frontend::PrintPreamble, OPT_print_preamble},
2390 {frontend::PrintPreprocessedInput, OPT_E},
2391 {frontend::TemplightDump, OPT_templight_dump},
2392 {frontend::RewriteMacros, OPT_rewrite_macros},
2393 {frontend::RewriteObjC, OPT_rewrite_objc},
2394 {frontend::RewriteTest, OPT_rewrite_test},
2395 {frontend::RunAnalysis, OPT_analyze},
2396 {frontend::MigrateSource, OPT_migrate},
2397 {frontend::RunPreprocessorOnly, OPT_Eonly},
2398 {frontend::PrintDependencyDirectivesSourceMinimizerOutput,
2399 OPT_print_dependency_directives_minimized_source},
2400 };
2401
2402 return Table;
2403 }
2404
2405 /// Maps command line option to frontend action.
getFrontendAction(OptSpecifier & Opt)2406 static Optional<frontend::ActionKind> getFrontendAction(OptSpecifier &Opt) {
2407 for (const auto &ActionOpt : getFrontendActionTable())
2408 if (ActionOpt.second == Opt.getID())
2409 return ActionOpt.first;
2410
2411 return None;
2412 }
2413
2414 /// Maps frontend action to command line option.
2415 static Optional<OptSpecifier>
getProgramActionOpt(frontend::ActionKind ProgramAction)2416 getProgramActionOpt(frontend::ActionKind ProgramAction) {
2417 for (const auto &ActionOpt : getFrontendActionTable())
2418 if (ActionOpt.first == ProgramAction)
2419 return OptSpecifier(ActionOpt.second);
2420
2421 return None;
2422 }
2423
GenerateFrontendArgs(const FrontendOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA,bool IsHeader)2424 static void GenerateFrontendArgs(const FrontendOptions &Opts,
2425 SmallVectorImpl<const char *> &Args,
2426 CompilerInvocation::StringAllocator SA,
2427 bool IsHeader) {
2428 const FrontendOptions &FrontendOpts = Opts;
2429 #define FRONTEND_OPTION_WITH_MARSHALLING( \
2430 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2431 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2432 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2433 MERGER, EXTRACTOR, TABLE_INDEX) \
2434 GENERATE_OPTION_WITH_MARSHALLING( \
2435 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
2436 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
2437 #include "clang/Driver/Options.inc"
2438 #undef FRONTEND_OPTION_WITH_MARSHALLING
2439
2440 Optional<OptSpecifier> ProgramActionOpt =
2441 getProgramActionOpt(Opts.ProgramAction);
2442
2443 // Generating a simple flag covers most frontend actions.
2444 std::function<void()> GenerateProgramAction = [&]() {
2445 GenerateArg(Args, *ProgramActionOpt, SA);
2446 };
2447
2448 if (!ProgramActionOpt) {
2449 // PluginAction is the only program action handled separately.
2450 assert(Opts.ProgramAction == frontend::PluginAction &&
2451 "Frontend action without option.");
2452 GenerateProgramAction = [&]() {
2453 GenerateArg(Args, OPT_plugin, Opts.ActionName, SA);
2454 };
2455 }
2456
2457 // FIXME: Simplify the complex 'AST dump' command line.
2458 if (Opts.ProgramAction == frontend::ASTDump) {
2459 GenerateProgramAction = [&]() {
2460 // ASTDumpLookups, ASTDumpDeclTypes and ASTDumpFilter are generated via
2461 // marshalling infrastructure.
2462
2463 if (Opts.ASTDumpFormat != ADOF_Default) {
2464 StringRef Format;
2465 switch (Opts.ASTDumpFormat) {
2466 case ADOF_Default:
2467 llvm_unreachable("Default AST dump format.");
2468 case ADOF_JSON:
2469 Format = "json";
2470 break;
2471 }
2472
2473 if (Opts.ASTDumpAll)
2474 GenerateArg(Args, OPT_ast_dump_all_EQ, Format, SA);
2475 if (Opts.ASTDumpDecls)
2476 GenerateArg(Args, OPT_ast_dump_EQ, Format, SA);
2477 } else {
2478 if (Opts.ASTDumpAll)
2479 GenerateArg(Args, OPT_ast_dump_all, SA);
2480 if (Opts.ASTDumpDecls)
2481 GenerateArg(Args, OPT_ast_dump, SA);
2482 }
2483 };
2484 }
2485
2486 if (Opts.ProgramAction == frontend::FixIt && !Opts.FixItSuffix.empty()) {
2487 GenerateProgramAction = [&]() {
2488 GenerateArg(Args, OPT_fixit_EQ, Opts.FixItSuffix, SA);
2489 };
2490 }
2491
2492 GenerateProgramAction();
2493
2494 for (const auto &PluginArgs : Opts.PluginArgs) {
2495 Option Opt = getDriverOptTable().getOption(OPT_plugin_arg);
2496 const char *Spelling =
2497 SA(Opt.getPrefix() + Opt.getName() + PluginArgs.first);
2498 for (const auto &PluginArg : PluginArgs.second)
2499 denormalizeString(Args, Spelling, SA, Opt.getKind(), 0, PluginArg);
2500 }
2501
2502 for (const auto &Ext : Opts.ModuleFileExtensions)
2503 if (auto *TestExt = dyn_cast_or_null<TestModuleFileExtension>(Ext.get()))
2504 GenerateArg(Args, OPT_ftest_module_file_extension_EQ, TestExt->str(), SA);
2505
2506 if (!Opts.CodeCompletionAt.FileName.empty())
2507 GenerateArg(Args, OPT_code_completion_at, Opts.CodeCompletionAt.ToString(),
2508 SA);
2509
2510 for (const auto &Plugin : Opts.Plugins)
2511 GenerateArg(Args, OPT_load, Plugin, SA);
2512
2513 // ASTDumpDecls and ASTDumpAll already handled with ProgramAction.
2514
2515 for (const auto &ModuleFile : Opts.ModuleFiles)
2516 GenerateArg(Args, OPT_fmodule_file, ModuleFile, SA);
2517
2518 if (Opts.AuxTargetCPU.hasValue())
2519 GenerateArg(Args, OPT_aux_target_cpu, *Opts.AuxTargetCPU, SA);
2520
2521 if (Opts.AuxTargetFeatures.hasValue())
2522 for (const auto &Feature : *Opts.AuxTargetFeatures)
2523 GenerateArg(Args, OPT_aux_target_feature, Feature, SA);
2524
2525 {
2526 StringRef Preprocessed = Opts.DashX.isPreprocessed() ? "-cpp-output" : "";
2527 StringRef ModuleMap =
2528 Opts.DashX.getFormat() == InputKind::ModuleMap ? "-module-map" : "";
2529 StringRef Header = IsHeader ? "-header" : "";
2530
2531 StringRef Lang;
2532 switch (Opts.DashX.getLanguage()) {
2533 case Language::C:
2534 Lang = "c";
2535 break;
2536 case Language::OpenCL:
2537 Lang = "cl";
2538 break;
2539 case Language::OpenCLCXX:
2540 Lang = "clcpp";
2541 break;
2542 case Language::CUDA:
2543 Lang = "cuda";
2544 break;
2545 case Language::HIP:
2546 Lang = "hip";
2547 break;
2548 case Language::CXX:
2549 Lang = "c++";
2550 break;
2551 case Language::ObjC:
2552 Lang = "objective-c";
2553 break;
2554 case Language::ObjCXX:
2555 Lang = "objective-c++";
2556 break;
2557 case Language::RenderScript:
2558 Lang = "renderscript";
2559 break;
2560 case Language::Asm:
2561 Lang = "assembler-with-cpp";
2562 break;
2563 case Language::Unknown:
2564 assert(Opts.DashX.getFormat() == InputKind::Precompiled &&
2565 "Generating -x argument for unknown language (not precompiled).");
2566 Lang = "ast";
2567 break;
2568 case Language::LLVM_IR:
2569 Lang = "ir";
2570 break;
2571 }
2572
2573 GenerateArg(Args, OPT_x, Lang + Header + ModuleMap + Preprocessed, SA);
2574 }
2575
2576 // OPT_INPUT has a unique class, generate it directly.
2577 for (const auto &Input : Opts.Inputs)
2578 Args.push_back(SA(Input.getFile()));
2579 }
2580
ParseFrontendArgs(FrontendOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags,bool & IsHeaderFile)2581 static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
2582 DiagnosticsEngine &Diags, bool &IsHeaderFile) {
2583 unsigned NumErrorsBefore = Diags.getNumErrors();
2584
2585 FrontendOptions &FrontendOpts = Opts;
2586
2587 #define FRONTEND_OPTION_WITH_MARSHALLING( \
2588 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2589 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2590 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2591 MERGER, EXTRACTOR, TABLE_INDEX) \
2592 PARSE_OPTION_WITH_MARSHALLING( \
2593 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
2594 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
2595 #include "clang/Driver/Options.inc"
2596 #undef FRONTEND_OPTION_WITH_MARSHALLING
2597
2598 Opts.ProgramAction = frontend::ParseSyntaxOnly;
2599 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
2600 OptSpecifier Opt = OptSpecifier(A->getOption().getID());
2601 Optional<frontend::ActionKind> ProgramAction = getFrontendAction(Opt);
2602 assert(ProgramAction && "Option specifier not in Action_Group.");
2603
2604 if (ProgramAction == frontend::ASTDump &&
2605 (Opt == OPT_ast_dump_all_EQ || Opt == OPT_ast_dump_EQ)) {
2606 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
2607 .CaseLower("default", ADOF_Default)
2608 .CaseLower("json", ADOF_JSON)
2609 .Default(std::numeric_limits<unsigned>::max());
2610
2611 if (Val != std::numeric_limits<unsigned>::max())
2612 Opts.ASTDumpFormat = static_cast<ASTDumpOutputFormat>(Val);
2613 else {
2614 Diags.Report(diag::err_drv_invalid_value)
2615 << A->getAsString(Args) << A->getValue();
2616 Opts.ASTDumpFormat = ADOF_Default;
2617 }
2618 }
2619
2620 if (ProgramAction == frontend::FixIt && Opt == OPT_fixit_EQ)
2621 Opts.FixItSuffix = A->getValue();
2622
2623 if (ProgramAction == frontend::GenerateInterfaceStubs) {
2624 StringRef ArgStr =
2625 Args.hasArg(OPT_interface_stub_version_EQ)
2626 ? Args.getLastArgValue(OPT_interface_stub_version_EQ)
2627 : "experimental-ifs-v2";
2628 if (ArgStr == "experimental-yaml-elf-v1" ||
2629 ArgStr == "experimental-ifs-v1" ||
2630 ArgStr == "experimental-tapi-elf-v1") {
2631 std::string ErrorMessage =
2632 "Invalid interface stub format: " + ArgStr.str() +
2633 " is deprecated.";
2634 Diags.Report(diag::err_drv_invalid_value)
2635 << "Must specify a valid interface stub format type, ie: "
2636 "-interface-stub-version=experimental-ifs-v2"
2637 << ErrorMessage;
2638 ProgramAction = frontend::ParseSyntaxOnly;
2639 } else if (!ArgStr.startswith("experimental-ifs-")) {
2640 std::string ErrorMessage =
2641 "Invalid interface stub format: " + ArgStr.str() + ".";
2642 Diags.Report(diag::err_drv_invalid_value)
2643 << "Must specify a valid interface stub format type, ie: "
2644 "-interface-stub-version=experimental-ifs-v2"
2645 << ErrorMessage;
2646 ProgramAction = frontend::ParseSyntaxOnly;
2647 }
2648 }
2649
2650 Opts.ProgramAction = *ProgramAction;
2651 }
2652
2653 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
2654 Opts.Plugins.emplace_back(A->getValue(0));
2655 Opts.ProgramAction = frontend::PluginAction;
2656 Opts.ActionName = A->getValue();
2657 }
2658 for (const auto *AA : Args.filtered(OPT_plugin_arg))
2659 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
2660
2661 for (const std::string &Arg :
2662 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
2663 std::string BlockName;
2664 unsigned MajorVersion;
2665 unsigned MinorVersion;
2666 bool Hashed;
2667 std::string UserInfo;
2668 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
2669 MinorVersion, Hashed, UserInfo)) {
2670 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
2671
2672 continue;
2673 }
2674
2675 // Add the testing module file extension.
2676 Opts.ModuleFileExtensions.push_back(
2677 std::make_shared<TestModuleFileExtension>(
2678 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo));
2679 }
2680
2681 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
2682 Opts.CodeCompletionAt =
2683 ParsedSourceLocation::FromString(A->getValue());
2684 if (Opts.CodeCompletionAt.FileName.empty())
2685 Diags.Report(diag::err_drv_invalid_value)
2686 << A->getAsString(Args) << A->getValue();
2687 }
2688
2689 Opts.Plugins = Args.getAllArgValues(OPT_load);
2690 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump, OPT_ast_dump_EQ);
2691 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all, OPT_ast_dump_all_EQ);
2692 // Only the -fmodule-file=<file> form.
2693 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
2694 StringRef Val = A->getValue();
2695 if (Val.find('=') == StringRef::npos)
2696 Opts.ModuleFiles.push_back(std::string(Val));
2697 }
2698
2699 if (Opts.ProgramAction != frontend::GenerateModule && Opts.IsSystemModule)
2700 Diags.Report(diag::err_drv_argument_only_allowed_with) << "-fsystem-module"
2701 << "-emit-module";
2702
2703 if (Args.hasArg(OPT_aux_target_cpu))
2704 Opts.AuxTargetCPU = std::string(Args.getLastArgValue(OPT_aux_target_cpu));
2705 if (Args.hasArg(OPT_aux_target_feature))
2706 Opts.AuxTargetFeatures = Args.getAllArgValues(OPT_aux_target_feature);
2707
2708 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
2709 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
2710 Diags.Report(diag::err_drv_argument_not_allowed_with)
2711 << "ARC migration" << "ObjC migration";
2712 }
2713
2714 InputKind DashX(Language::Unknown);
2715 if (const Arg *A = Args.getLastArg(OPT_x)) {
2716 StringRef XValue = A->getValue();
2717
2718 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'.
2719 // FIXME: Supporting '<lang>-header-cpp-output' would be useful.
2720 bool Preprocessed = XValue.consume_back("-cpp-output");
2721 bool ModuleMap = XValue.consume_back("-module-map");
2722 IsHeaderFile = !Preprocessed && !ModuleMap &&
2723 XValue != "precompiled-header" &&
2724 XValue.consume_back("-header");
2725
2726 // Principal languages.
2727 DashX = llvm::StringSwitch<InputKind>(XValue)
2728 .Case("c", Language::C)
2729 .Case("cl", Language::OpenCL)
2730 .Case("clcpp", Language::OpenCLCXX)
2731 .Case("cuda", Language::CUDA)
2732 .Case("hip", Language::HIP)
2733 .Case("c++", Language::CXX)
2734 .Case("objective-c", Language::ObjC)
2735 .Case("objective-c++", Language::ObjCXX)
2736 .Case("renderscript", Language::RenderScript)
2737 .Default(Language::Unknown);
2738
2739 // "objc[++]-cpp-output" is an acceptable synonym for
2740 // "objective-c[++]-cpp-output".
2741 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap)
2742 DashX = llvm::StringSwitch<InputKind>(XValue)
2743 .Case("objc", Language::ObjC)
2744 .Case("objc++", Language::ObjCXX)
2745 .Default(Language::Unknown);
2746
2747 // Some special cases cannot be combined with suffixes.
2748 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile)
2749 DashX = llvm::StringSwitch<InputKind>(XValue)
2750 .Case("cpp-output", InputKind(Language::C).getPreprocessed())
2751 .Case("assembler-with-cpp", Language::Asm)
2752 .Cases("ast", "pcm", "precompiled-header",
2753 InputKind(Language::Unknown, InputKind::Precompiled))
2754 .Case("ir", Language::LLVM_IR)
2755 .Default(Language::Unknown);
2756
2757 if (DashX.isUnknown())
2758 Diags.Report(diag::err_drv_invalid_value)
2759 << A->getAsString(Args) << A->getValue();
2760
2761 if (Preprocessed)
2762 DashX = DashX.getPreprocessed();
2763 if (ModuleMap)
2764 DashX = DashX.withFormat(InputKind::ModuleMap);
2765 }
2766
2767 // '-' is the default input if none is given.
2768 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
2769 Opts.Inputs.clear();
2770 if (Inputs.empty())
2771 Inputs.push_back("-");
2772 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
2773 InputKind IK = DashX;
2774 if (IK.isUnknown()) {
2775 IK = FrontendOptions::getInputKindForExtension(
2776 StringRef(Inputs[i]).rsplit('.').second);
2777 // FIXME: Warn on this?
2778 if (IK.isUnknown())
2779 IK = Language::C;
2780 // FIXME: Remove this hack.
2781 if (i == 0)
2782 DashX = IK;
2783 }
2784
2785 bool IsSystem = false;
2786
2787 // The -emit-module action implicitly takes a module map.
2788 if (Opts.ProgramAction == frontend::GenerateModule &&
2789 IK.getFormat() == InputKind::Source) {
2790 IK = IK.withFormat(InputKind::ModuleMap);
2791 IsSystem = Opts.IsSystemModule;
2792 }
2793
2794 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK, IsSystem);
2795 }
2796
2797 Opts.DashX = DashX;
2798
2799 return Diags.getNumErrors() == NumErrorsBefore;
2800 }
2801
GetResourcesPath(const char * Argv0,void * MainAddr)2802 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
2803 void *MainAddr) {
2804 std::string ClangExecutable =
2805 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
2806 return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR);
2807 }
2808
GenerateHeaderSearchArgs(HeaderSearchOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA)2809 static void GenerateHeaderSearchArgs(HeaderSearchOptions &Opts,
2810 SmallVectorImpl<const char *> &Args,
2811 CompilerInvocation::StringAllocator SA) {
2812 const HeaderSearchOptions *HeaderSearchOpts = &Opts;
2813 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \
2814 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2815 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2816 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2817 MERGER, EXTRACTOR, TABLE_INDEX) \
2818 GENERATE_OPTION_WITH_MARSHALLING( \
2819 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
2820 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
2821 #include "clang/Driver/Options.inc"
2822 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING
2823
2824 if (Opts.UseLibcxx)
2825 GenerateArg(Args, OPT_stdlib_EQ, "libc++", SA);
2826
2827 if (!Opts.ModuleCachePath.empty())
2828 GenerateArg(Args, OPT_fmodules_cache_path, Opts.ModuleCachePath, SA);
2829
2830 for (const auto &File : Opts.PrebuiltModuleFiles)
2831 GenerateArg(Args, OPT_fmodule_file, File.first + "=" + File.second, SA);
2832
2833 for (const auto &Path : Opts.PrebuiltModulePaths)
2834 GenerateArg(Args, OPT_fprebuilt_module_path, Path, SA);
2835
2836 for (const auto &Macro : Opts.ModulesIgnoreMacros)
2837 GenerateArg(Args, OPT_fmodules_ignore_macro, Macro.val(), SA);
2838
2839 auto Matches = [](const HeaderSearchOptions::Entry &Entry,
2840 llvm::ArrayRef<frontend::IncludeDirGroup> Groups,
2841 llvm::Optional<bool> IsFramework,
2842 llvm::Optional<bool> IgnoreSysRoot) {
2843 return llvm::find(Groups, Entry.Group) != Groups.end() &&
2844 (!IsFramework || (Entry.IsFramework == *IsFramework)) &&
2845 (!IgnoreSysRoot || (Entry.IgnoreSysRoot == *IgnoreSysRoot));
2846 };
2847
2848 auto It = Opts.UserEntries.begin();
2849 auto End = Opts.UserEntries.end();
2850
2851 // Add -I..., -F..., and -index-header-map options in order.
2852 for (; It < End &&
2853 Matches(*It, {frontend::IndexHeaderMap, frontend::Angled}, None, true);
2854 ++It) {
2855 OptSpecifier Opt = [It, Matches]() {
2856 if (Matches(*It, frontend::IndexHeaderMap, true, true))
2857 return OPT_F;
2858 if (Matches(*It, frontend::IndexHeaderMap, false, true))
2859 return OPT_I;
2860 if (Matches(*It, frontend::Angled, true, true))
2861 return OPT_F;
2862 if (Matches(*It, frontend::Angled, false, true))
2863 return OPT_I;
2864 llvm_unreachable("Unexpected HeaderSearchOptions::Entry.");
2865 }();
2866
2867 if (It->Group == frontend::IndexHeaderMap)
2868 GenerateArg(Args, OPT_index_header_map, SA);
2869 GenerateArg(Args, Opt, It->Path, SA);
2870 };
2871
2872 // Note: some paths that came from "[-iprefix=xx] -iwithprefixbefore=yy" may
2873 // have already been generated as "-I[xx]yy". If that's the case, their
2874 // position on command line was such that this has no semantic impact on
2875 // include paths.
2876 for (; It < End &&
2877 Matches(*It, {frontend::After, frontend::Angled}, false, true);
2878 ++It) {
2879 OptSpecifier Opt =
2880 It->Group == frontend::After ? OPT_iwithprefix : OPT_iwithprefixbefore;
2881 GenerateArg(Args, Opt, It->Path, SA);
2882 }
2883
2884 // Note: Some paths that came from "-idirafter=xxyy" may have already been
2885 // generated as "-iwithprefix=xxyy". If that's the case, their position on
2886 // command line was such that this has no semantic impact on include paths.
2887 for (; It < End && Matches(*It, {frontend::After}, false, true); ++It)
2888 GenerateArg(Args, OPT_idirafter, It->Path, SA);
2889 for (; It < End && Matches(*It, {frontend::Quoted}, false, true); ++It)
2890 GenerateArg(Args, OPT_iquote, It->Path, SA);
2891 for (; It < End && Matches(*It, {frontend::System}, false, None); ++It)
2892 GenerateArg(Args, It->IgnoreSysRoot ? OPT_isystem : OPT_iwithsysroot,
2893 It->Path, SA);
2894 for (; It < End && Matches(*It, {frontend::System}, true, true); ++It)
2895 GenerateArg(Args, OPT_iframework, It->Path, SA);
2896 for (; It < End && Matches(*It, {frontend::System}, true, false); ++It)
2897 GenerateArg(Args, OPT_iframeworkwithsysroot, It->Path, SA);
2898
2899 // Add the paths for the various language specific isystem flags.
2900 for (; It < End && Matches(*It, {frontend::CSystem}, false, true); ++It)
2901 GenerateArg(Args, OPT_c_isystem, It->Path, SA);
2902 for (; It < End && Matches(*It, {frontend::CXXSystem}, false, true); ++It)
2903 GenerateArg(Args, OPT_cxx_isystem, It->Path, SA);
2904 for (; It < End && Matches(*It, {frontend::ObjCSystem}, false, true); ++It)
2905 GenerateArg(Args, OPT_objc_isystem, It->Path, SA);
2906 for (; It < End && Matches(*It, {frontend::ObjCXXSystem}, false, true); ++It)
2907 GenerateArg(Args, OPT_objcxx_isystem, It->Path, SA);
2908
2909 // Add the internal paths from a driver that detects standard include paths.
2910 // Note: Some paths that came from "-internal-isystem" arguments may have
2911 // already been generated as "-isystem". If that's the case, their position on
2912 // command line was such that this has no semantic impact on include paths.
2913 for (; It < End &&
2914 Matches(*It, {frontend::System, frontend::ExternCSystem}, false, true);
2915 ++It) {
2916 OptSpecifier Opt = It->Group == frontend::System
2917 ? OPT_internal_isystem
2918 : OPT_internal_externc_isystem;
2919 GenerateArg(Args, Opt, It->Path, SA);
2920 }
2921
2922 assert(It == End && "Unhandled HeaderSearchOption::Entry.");
2923
2924 // Add the path prefixes which are implicitly treated as being system headers.
2925 for (const auto &P : Opts.SystemHeaderPrefixes) {
2926 OptSpecifier Opt = P.IsSystemHeader ? OPT_system_header_prefix
2927 : OPT_no_system_header_prefix;
2928 GenerateArg(Args, Opt, P.Prefix, SA);
2929 }
2930
2931 for (const std::string &F : Opts.VFSOverlayFiles)
2932 GenerateArg(Args, OPT_ivfsoverlay, F, SA);
2933 }
2934
ParseHeaderSearchArgs(HeaderSearchOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags,const std::string & WorkingDir)2935 static bool ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
2936 DiagnosticsEngine &Diags,
2937 const std::string &WorkingDir) {
2938 unsigned NumErrorsBefore = Diags.getNumErrors();
2939
2940 HeaderSearchOptions *HeaderSearchOpts = &Opts;
2941
2942 #define HEADER_SEARCH_OPTION_WITH_MARSHALLING( \
2943 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
2944 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
2945 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
2946 MERGER, EXTRACTOR, TABLE_INDEX) \
2947 PARSE_OPTION_WITH_MARSHALLING( \
2948 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
2949 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
2950 #include "clang/Driver/Options.inc"
2951 #undef HEADER_SEARCH_OPTION_WITH_MARSHALLING
2952
2953 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
2954 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
2955
2956 // Canonicalize -fmodules-cache-path before storing it.
2957 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path));
2958 if (!(P.empty() || llvm::sys::path::is_absolute(P))) {
2959 if (WorkingDir.empty())
2960 llvm::sys::fs::make_absolute(P);
2961 else
2962 llvm::sys::fs::make_absolute(WorkingDir, P);
2963 }
2964 llvm::sys::path::remove_dots(P);
2965 Opts.ModuleCachePath = std::string(P.str());
2966
2967 // Only the -fmodule-file=<name>=<file> form.
2968 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
2969 StringRef Val = A->getValue();
2970 if (Val.find('=') != StringRef::npos){
2971 auto Split = Val.split('=');
2972 Opts.PrebuiltModuleFiles.insert(
2973 {std::string(Split.first), std::string(Split.second)});
2974 }
2975 }
2976 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path))
2977 Opts.AddPrebuiltModulePath(A->getValue());
2978
2979 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) {
2980 StringRef MacroDef = A->getValue();
2981 Opts.ModulesIgnoreMacros.insert(
2982 llvm::CachedHashString(MacroDef.split('=').first));
2983 }
2984
2985 // Add -I..., -F..., and -index-header-map options in order.
2986 bool IsIndexHeaderMap = false;
2987 bool IsSysrootSpecified =
2988 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot);
2989 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
2990 if (A->getOption().matches(OPT_index_header_map)) {
2991 // -index-header-map applies to the next -I or -F.
2992 IsIndexHeaderMap = true;
2993 continue;
2994 }
2995
2996 frontend::IncludeDirGroup Group =
2997 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
2998
2999 bool IsFramework = A->getOption().matches(OPT_F);
3000 std::string Path = A->getValue();
3001
3002 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
3003 SmallString<32> Buffer;
3004 llvm::sys::path::append(Buffer, Opts.Sysroot,
3005 llvm::StringRef(A->getValue()).substr(1));
3006 Path = std::string(Buffer.str());
3007 }
3008
3009 Opts.AddPath(Path, Group, IsFramework,
3010 /*IgnoreSysroot*/ true);
3011 IsIndexHeaderMap = false;
3012 }
3013
3014 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
3015 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
3016 for (const auto *A :
3017 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
3018 if (A->getOption().matches(OPT_iprefix))
3019 Prefix = A->getValue();
3020 else if (A->getOption().matches(OPT_iwithprefix))
3021 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
3022 else
3023 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
3024 }
3025
3026 for (const auto *A : Args.filtered(OPT_idirafter))
3027 Opts.AddPath(A->getValue(), frontend::After, false, true);
3028 for (const auto *A : Args.filtered(OPT_iquote))
3029 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
3030 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
3031 Opts.AddPath(A->getValue(), frontend::System, false,
3032 !A->getOption().matches(OPT_iwithsysroot));
3033 for (const auto *A : Args.filtered(OPT_iframework))
3034 Opts.AddPath(A->getValue(), frontend::System, true, true);
3035 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot))
3036 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true,
3037 /*IgnoreSysRoot=*/false);
3038
3039 // Add the paths for the various language specific isystem flags.
3040 for (const auto *A : Args.filtered(OPT_c_isystem))
3041 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
3042 for (const auto *A : Args.filtered(OPT_cxx_isystem))
3043 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
3044 for (const auto *A : Args.filtered(OPT_objc_isystem))
3045 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
3046 for (const auto *A : Args.filtered(OPT_objcxx_isystem))
3047 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
3048
3049 // Add the internal paths from a driver that detects standard include paths.
3050 for (const auto *A :
3051 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
3052 frontend::IncludeDirGroup Group = frontend::System;
3053 if (A->getOption().matches(OPT_internal_externc_isystem))
3054 Group = frontend::ExternCSystem;
3055 Opts.AddPath(A->getValue(), Group, false, true);
3056 }
3057
3058 // Add the path prefixes which are implicitly treated as being system headers.
3059 for (const auto *A :
3060 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
3061 Opts.AddSystemHeaderPrefix(
3062 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
3063
3064 for (const auto *A : Args.filtered(OPT_ivfsoverlay))
3065 Opts.AddVFSOverlayFile(A->getValue());
3066
3067 return Diags.getNumErrors() == NumErrorsBefore;
3068 }
3069
setLangDefaults(LangOptions & Opts,InputKind IK,const llvm::Triple & T,std::vector<std::string> & Includes,LangStandard::Kind LangStd)3070 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
3071 const llvm::Triple &T,
3072 std::vector<std::string> &Includes,
3073 LangStandard::Kind LangStd) {
3074 // Set some properties which depend solely on the input kind; it would be nice
3075 // to move these to the language standard, and have the driver resolve the
3076 // input kind + language standard.
3077 //
3078 // FIXME: Perhaps a better model would be for a single source file to have
3079 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std)
3080 // simultaneously active?
3081 if (IK.getLanguage() == Language::Asm) {
3082 Opts.AsmPreprocessor = 1;
3083 } else if (IK.isObjectiveC()) {
3084 Opts.ObjC = 1;
3085 }
3086
3087 if (LangStd == LangStandard::lang_unspecified) {
3088 // Based on the base language, pick one.
3089 switch (IK.getLanguage()) {
3090 case Language::Unknown:
3091 case Language::LLVM_IR:
3092 llvm_unreachable("Invalid input kind!");
3093 case Language::OpenCL:
3094 LangStd = LangStandard::lang_opencl10;
3095 break;
3096 case Language::OpenCLCXX:
3097 LangStd = LangStandard::lang_openclcpp;
3098 break;
3099 case Language::CUDA:
3100 LangStd = LangStandard::lang_cuda;
3101 break;
3102 case Language::Asm:
3103 case Language::C:
3104 #if defined(CLANG_DEFAULT_STD_C)
3105 LangStd = CLANG_DEFAULT_STD_C;
3106 #else
3107 // The PS4 uses C99 as the default C standard.
3108 if (T.isPS4())
3109 LangStd = LangStandard::lang_gnu99;
3110 else
3111 LangStd = LangStandard::lang_gnu17;
3112 #endif
3113 break;
3114 case Language::ObjC:
3115 #if defined(CLANG_DEFAULT_STD_C)
3116 LangStd = CLANG_DEFAULT_STD_C;
3117 #else
3118 LangStd = LangStandard::lang_gnu11;
3119 #endif
3120 break;
3121 case Language::CXX:
3122 case Language::ObjCXX:
3123 #if defined(CLANG_DEFAULT_STD_CXX)
3124 LangStd = CLANG_DEFAULT_STD_CXX;
3125 #else
3126 LangStd = LangStandard::lang_gnucxx14;
3127 #endif
3128 break;
3129 case Language::RenderScript:
3130 LangStd = LangStandard::lang_c99;
3131 break;
3132 case Language::HIP:
3133 LangStd = LangStandard::lang_hip;
3134 break;
3135 }
3136 }
3137
3138 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
3139 Opts.LangStd = LangStd;
3140 Opts.LineComment = Std.hasLineComments();
3141 Opts.C99 = Std.isC99();
3142 Opts.C11 = Std.isC11();
3143 Opts.C17 = Std.isC17();
3144 Opts.C2x = Std.isC2x();
3145 Opts.CPlusPlus = Std.isCPlusPlus();
3146 Opts.CPlusPlus11 = Std.isCPlusPlus11();
3147 Opts.CPlusPlus14 = Std.isCPlusPlus14();
3148 Opts.CPlusPlus17 = Std.isCPlusPlus17();
3149 Opts.CPlusPlus20 = Std.isCPlusPlus20();
3150 Opts.CPlusPlus2b = Std.isCPlusPlus2b();
3151 Opts.GNUMode = Std.isGNUMode();
3152 Opts.GNUCVersion = 0;
3153 Opts.HexFloats = Std.hasHexFloats();
3154 Opts.ImplicitInt = Std.hasImplicitInt();
3155
3156 Opts.CPlusPlusModules = Opts.CPlusPlus20;
3157
3158 // Set OpenCL Version.
3159 Opts.OpenCL = Std.isOpenCL();
3160 if (LangStd == LangStandard::lang_opencl10)
3161 Opts.OpenCLVersion = 100;
3162 else if (LangStd == LangStandard::lang_opencl11)
3163 Opts.OpenCLVersion = 110;
3164 else if (LangStd == LangStandard::lang_opencl12)
3165 Opts.OpenCLVersion = 120;
3166 else if (LangStd == LangStandard::lang_opencl20)
3167 Opts.OpenCLVersion = 200;
3168 else if (LangStd == LangStandard::lang_opencl30)
3169 Opts.OpenCLVersion = 300;
3170 else if (LangStd == LangStandard::lang_openclcpp)
3171 Opts.OpenCLCPlusPlusVersion = 100;
3172
3173 // OpenCL has some additional defaults.
3174 if (Opts.OpenCL) {
3175 Opts.AltiVec = 0;
3176 Opts.ZVector = 0;
3177 Opts.setDefaultFPContractMode(LangOptions::FPM_On);
3178 Opts.OpenCLCPlusPlus = Opts.CPlusPlus;
3179 Opts.OpenCLPipe = Opts.OpenCLCPlusPlus || Opts.OpenCLVersion == 200;
3180 Opts.OpenCLGenericAddressSpace =
3181 Opts.OpenCLCPlusPlus || Opts.OpenCLVersion == 200;
3182
3183 // Include default header file for OpenCL.
3184 if (Opts.IncludeDefaultHeader) {
3185 if (Opts.DeclareOpenCLBuiltins) {
3186 // Only include base header file for builtin types and constants.
3187 Includes.push_back("opencl-c-base.h");
3188 } else {
3189 Includes.push_back("opencl-c.h");
3190 }
3191 }
3192 }
3193
3194 Opts.HIP = IK.getLanguage() == Language::HIP;
3195 Opts.CUDA = IK.getLanguage() == Language::CUDA || Opts.HIP;
3196 if (Opts.HIP) {
3197 // HIP toolchain does not support 'Fast' FPOpFusion in backends since it
3198 // fuses multiplication/addition instructions without contract flag from
3199 // device library functions in LLVM bitcode, which causes accuracy loss in
3200 // certain math functions, e.g. tan(-1e20) becomes -0.933 instead of 0.8446.
3201 // For device library functions in bitcode to work, 'Strict' or 'Standard'
3202 // FPOpFusion options in backends is needed. Therefore 'fast-honor-pragmas'
3203 // FP contract option is used to allow fuse across statements in frontend
3204 // whereas respecting contract flag in backend.
3205 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas);
3206 } else if (Opts.CUDA) {
3207 // Allow fuse across statements disregarding pragmas.
3208 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
3209 }
3210
3211 Opts.RenderScript = IK.getLanguage() == Language::RenderScript;
3212
3213 // OpenCL and C++ both have bool, true, false keywords.
3214 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
3215
3216 // OpenCL has half keyword
3217 Opts.Half = Opts.OpenCL;
3218 }
3219
3220 /// Check if input file kind and language standard are compatible.
IsInputCompatibleWithStandard(InputKind IK,const LangStandard & S)3221 static bool IsInputCompatibleWithStandard(InputKind IK,
3222 const LangStandard &S) {
3223 switch (IK.getLanguage()) {
3224 case Language::Unknown:
3225 case Language::LLVM_IR:
3226 llvm_unreachable("should not parse language flags for this input");
3227
3228 case Language::C:
3229 case Language::ObjC:
3230 case Language::RenderScript:
3231 return S.getLanguage() == Language::C;
3232
3233 case Language::OpenCL:
3234 return S.getLanguage() == Language::OpenCL ||
3235 S.getLanguage() == Language::OpenCLCXX;
3236
3237 case Language::OpenCLCXX:
3238 return S.getLanguage() == Language::OpenCLCXX;
3239
3240 case Language::CXX:
3241 case Language::ObjCXX:
3242 return S.getLanguage() == Language::CXX;
3243
3244 case Language::CUDA:
3245 // FIXME: What -std= values should be permitted for CUDA compilations?
3246 return S.getLanguage() == Language::CUDA ||
3247 S.getLanguage() == Language::CXX;
3248
3249 case Language::HIP:
3250 return S.getLanguage() == Language::CXX || S.getLanguage() == Language::HIP;
3251
3252 case Language::Asm:
3253 // Accept (and ignore) all -std= values.
3254 // FIXME: The -std= value is not ignored; it affects the tokenization
3255 // and preprocessing rules if we're preprocessing this asm input.
3256 return true;
3257 }
3258
3259 llvm_unreachable("unexpected input language");
3260 }
3261
3262 /// Get language name for given input kind.
GetInputKindName(InputKind IK)3263 static const StringRef GetInputKindName(InputKind IK) {
3264 switch (IK.getLanguage()) {
3265 case Language::C:
3266 return "C";
3267 case Language::ObjC:
3268 return "Objective-C";
3269 case Language::CXX:
3270 return "C++";
3271 case Language::ObjCXX:
3272 return "Objective-C++";
3273 case Language::OpenCL:
3274 return "OpenCL";
3275 case Language::OpenCLCXX:
3276 return "C++ for OpenCL";
3277 case Language::CUDA:
3278 return "CUDA";
3279 case Language::RenderScript:
3280 return "RenderScript";
3281 case Language::HIP:
3282 return "HIP";
3283
3284 case Language::Asm:
3285 return "Asm";
3286 case Language::LLVM_IR:
3287 return "LLVM IR";
3288
3289 case Language::Unknown:
3290 break;
3291 }
3292 llvm_unreachable("unknown input language");
3293 }
3294
GenerateLangArgs(const LangOptions & Opts,SmallVectorImpl<const char * > & Args,StringAllocator SA,const llvm::Triple & T,InputKind IK)3295 void CompilerInvocation::GenerateLangArgs(const LangOptions &Opts,
3296 SmallVectorImpl<const char *> &Args,
3297 StringAllocator SA,
3298 const llvm::Triple &T, InputKind IK) {
3299 if (IK.getFormat() == InputKind::Precompiled ||
3300 IK.getLanguage() == Language::LLVM_IR) {
3301 if (Opts.ObjCAutoRefCount)
3302 GenerateArg(Args, OPT_fobjc_arc, SA);
3303 if (Opts.PICLevel != 0)
3304 GenerateArg(Args, OPT_pic_level, Twine(Opts.PICLevel), SA);
3305 if (Opts.PIE)
3306 GenerateArg(Args, OPT_pic_is_pie, SA);
3307 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize))
3308 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA);
3309
3310 return;
3311 }
3312
3313 OptSpecifier StdOpt;
3314 switch (Opts.LangStd) {
3315 case LangStandard::lang_opencl10:
3316 case LangStandard::lang_opencl11:
3317 case LangStandard::lang_opencl12:
3318 case LangStandard::lang_opencl20:
3319 case LangStandard::lang_opencl30:
3320 case LangStandard::lang_openclcpp:
3321 StdOpt = OPT_cl_std_EQ;
3322 break;
3323 default:
3324 StdOpt = OPT_std_EQ;
3325 break;
3326 }
3327
3328 auto LangStandard = LangStandard::getLangStandardForKind(Opts.LangStd);
3329 GenerateArg(Args, StdOpt, LangStandard.getName(), SA);
3330
3331 if (Opts.IncludeDefaultHeader)
3332 GenerateArg(Args, OPT_finclude_default_header, SA);
3333 if (Opts.DeclareOpenCLBuiltins)
3334 GenerateArg(Args, OPT_fdeclare_opencl_builtins, SA);
3335
3336 const LangOptions *LangOpts = &Opts;
3337
3338 #define LANG_OPTION_WITH_MARSHALLING( \
3339 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
3340 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
3341 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
3342 MERGER, EXTRACTOR, TABLE_INDEX) \
3343 GENERATE_OPTION_WITH_MARSHALLING( \
3344 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
3345 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
3346 #include "clang/Driver/Options.inc"
3347 #undef LANG_OPTION_WITH_MARSHALLING
3348
3349 // The '-fcf-protection=' option is generated by CodeGenOpts generator.
3350
3351 if (Opts.ObjC) {
3352 GenerateArg(Args, OPT_fobjc_runtime_EQ, Opts.ObjCRuntime.getAsString(), SA);
3353
3354 if (Opts.GC == LangOptions::GCOnly)
3355 GenerateArg(Args, OPT_fobjc_gc_only, SA);
3356 else if (Opts.GC == LangOptions::HybridGC)
3357 GenerateArg(Args, OPT_fobjc_gc, SA);
3358 else if (Opts.ObjCAutoRefCount == 1)
3359 GenerateArg(Args, OPT_fobjc_arc, SA);
3360
3361 if (Opts.ObjCWeakRuntime)
3362 GenerateArg(Args, OPT_fobjc_runtime_has_weak, SA);
3363
3364 if (Opts.ObjCWeak)
3365 GenerateArg(Args, OPT_fobjc_weak, SA);
3366
3367 if (Opts.ObjCSubscriptingLegacyRuntime)
3368 GenerateArg(Args, OPT_fobjc_subscripting_legacy_runtime, SA);
3369 }
3370
3371 if (Opts.GNUCVersion != 0) {
3372 unsigned Major = Opts.GNUCVersion / 100 / 100;
3373 unsigned Minor = (Opts.GNUCVersion / 100) % 100;
3374 unsigned Patch = Opts.GNUCVersion % 100;
3375 GenerateArg(Args, OPT_fgnuc_version_EQ,
3376 Twine(Major) + "." + Twine(Minor) + "." + Twine(Patch), SA);
3377 }
3378
3379 if (Opts.IgnoreXCOFFVisibility)
3380 GenerateArg(Args, OPT_mignore_xcoff_visibility, SA);
3381
3382 if (Opts.SignedOverflowBehavior == LangOptions::SOB_Trapping) {
3383 GenerateArg(Args, OPT_ftrapv, SA);
3384 GenerateArg(Args, OPT_ftrapv_handler, Opts.OverflowHandler, SA);
3385 } else if (Opts.SignedOverflowBehavior == LangOptions::SOB_Defined) {
3386 GenerateArg(Args, OPT_fwrapv, SA);
3387 }
3388
3389 if (Opts.MSCompatibilityVersion != 0) {
3390 unsigned Major = Opts.MSCompatibilityVersion / 10000000;
3391 unsigned Minor = (Opts.MSCompatibilityVersion / 100000) % 100;
3392 unsigned Subminor = Opts.MSCompatibilityVersion % 100000;
3393 GenerateArg(Args, OPT_fms_compatibility_version,
3394 Twine(Major) + "." + Twine(Minor) + "." + Twine(Subminor), SA);
3395 }
3396
3397 if ((!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS()) {
3398 if (!Opts.Trigraphs)
3399 GenerateArg(Args, OPT_fno_trigraphs, SA);
3400 } else {
3401 if (Opts.Trigraphs)
3402 GenerateArg(Args, OPT_ftrigraphs, SA);
3403 }
3404
3405 if (Opts.Blocks && !(Opts.OpenCL && Opts.OpenCLVersion == 200))
3406 GenerateArg(Args, OPT_fblocks, SA);
3407
3408 if (Opts.ConvergentFunctions &&
3409 !(Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) || Opts.SYCLIsDevice))
3410 GenerateArg(Args, OPT_fconvergent_functions, SA);
3411
3412 if (Opts.NoBuiltin && !Opts.Freestanding)
3413 GenerateArg(Args, OPT_fno_builtin, SA);
3414
3415 if (!Opts.NoBuiltin)
3416 for (const auto &Func : Opts.NoBuiltinFuncs)
3417 GenerateArg(Args, OPT_fno_builtin_, Func, SA);
3418
3419 if (Opts.LongDoubleSize == 128)
3420 GenerateArg(Args, OPT_mlong_double_128, SA);
3421 else if (Opts.LongDoubleSize == 64)
3422 GenerateArg(Args, OPT_mlong_double_64, SA);
3423
3424 // Not generating '-mrtd', it's just an alias for '-fdefault-calling-conv='.
3425
3426 // OpenMP was requested via '-fopenmp', not implied by '-fopenmp-simd' or
3427 // '-fopenmp-targets='.
3428 if (Opts.OpenMP && !Opts.OpenMPSimd) {
3429 GenerateArg(Args, OPT_fopenmp, SA);
3430
3431 if (Opts.OpenMP != 50)
3432 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA);
3433
3434 if (!Opts.OpenMPUseTLS)
3435 GenerateArg(Args, OPT_fnoopenmp_use_tls, SA);
3436
3437 if (Opts.OpenMPIsDevice)
3438 GenerateArg(Args, OPT_fopenmp_is_device, SA);
3439
3440 if (Opts.OpenMPIRBuilder)
3441 GenerateArg(Args, OPT_fopenmp_enable_irbuilder, SA);
3442 }
3443
3444 if (Opts.OpenMPSimd) {
3445 GenerateArg(Args, OPT_fopenmp_simd, SA);
3446
3447 if (Opts.OpenMP != 50)
3448 GenerateArg(Args, OPT_fopenmp_version_EQ, Twine(Opts.OpenMP), SA);
3449 }
3450
3451 if (Opts.OpenMPCUDANumSMs != 0)
3452 GenerateArg(Args, OPT_fopenmp_cuda_number_of_sm_EQ,
3453 Twine(Opts.OpenMPCUDANumSMs), SA);
3454
3455 if (Opts.OpenMPCUDABlocksPerSM != 0)
3456 GenerateArg(Args, OPT_fopenmp_cuda_blocks_per_sm_EQ,
3457 Twine(Opts.OpenMPCUDABlocksPerSM), SA);
3458
3459 if (Opts.OpenMPCUDAReductionBufNum != 1024)
3460 GenerateArg(Args, OPT_fopenmp_cuda_teams_reduction_recs_num_EQ,
3461 Twine(Opts.OpenMPCUDAReductionBufNum), SA);
3462
3463 if (!Opts.OMPTargetTriples.empty()) {
3464 std::string Targets;
3465 llvm::raw_string_ostream OS(Targets);
3466 llvm::interleave(
3467 Opts.OMPTargetTriples, OS,
3468 [&OS](const llvm::Triple &T) { OS << T.str(); }, ",");
3469 GenerateArg(Args, OPT_fopenmp_targets_EQ, OS.str(), SA);
3470 }
3471
3472 if (!Opts.OMPHostIRFile.empty())
3473 GenerateArg(Args, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile, SA);
3474
3475 if (Opts.OpenMPCUDAMode)
3476 GenerateArg(Args, OPT_fopenmp_cuda_mode, SA);
3477
3478 if (Opts.OpenMPCUDATargetParallel)
3479 GenerateArg(Args, OPT_fopenmp_cuda_parallel_target_regions, SA);
3480
3481 if (Opts.OpenMPCUDAForceFullRuntime)
3482 GenerateArg(Args, OPT_fopenmp_cuda_force_full_runtime, SA);
3483
3484 // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are
3485 // generated from CodeGenOptions.
3486
3487 if (Opts.DefaultFPContractMode == LangOptions::FPM_Fast)
3488 GenerateArg(Args, OPT_ffp_contract, "fast", SA);
3489 else if (Opts.DefaultFPContractMode == LangOptions::FPM_On)
3490 GenerateArg(Args, OPT_ffp_contract, "on", SA);
3491 else if (Opts.DefaultFPContractMode == LangOptions::FPM_Off)
3492 GenerateArg(Args, OPT_ffp_contract, "off", SA);
3493 else if (Opts.DefaultFPContractMode == LangOptions::FPM_FastHonorPragmas)
3494 GenerateArg(Args, OPT_ffp_contract, "fast-honor-pragmas", SA);
3495
3496 for (StringRef Sanitizer : serializeSanitizerKinds(Opts.Sanitize))
3497 GenerateArg(Args, OPT_fsanitize_EQ, Sanitizer, SA);
3498
3499 // Conflating '-fsanitize-system-ignorelist' and '-fsanitize-ignorelist'.
3500 for (const std::string &F : Opts.NoSanitizeFiles)
3501 GenerateArg(Args, OPT_fsanitize_ignorelist_EQ, F, SA);
3502
3503 if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver3_8)
3504 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "3.8", SA);
3505 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver4)
3506 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "4.0", SA);
3507 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver6)
3508 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "6.0", SA);
3509 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver7)
3510 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "7.0", SA);
3511 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver9)
3512 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "9.0", SA);
3513 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver11)
3514 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "11.0", SA);
3515 else if (Opts.getClangABICompat() == LangOptions::ClangABI::Ver12)
3516 GenerateArg(Args, OPT_fclang_abi_compat_EQ, "12.0", SA);
3517
3518 if (Opts.getSignReturnAddressScope() ==
3519 LangOptions::SignReturnAddressScopeKind::All)
3520 GenerateArg(Args, OPT_msign_return_address_EQ, "all", SA);
3521 else if (Opts.getSignReturnAddressScope() ==
3522 LangOptions::SignReturnAddressScopeKind::NonLeaf)
3523 GenerateArg(Args, OPT_msign_return_address_EQ, "non-leaf", SA);
3524
3525 if (Opts.getSignReturnAddressKey() ==
3526 LangOptions::SignReturnAddressKeyKind::BKey)
3527 GenerateArg(Args, OPT_msign_return_address_key_EQ, "b_key", SA);
3528
3529 if (Opts.CXXABI)
3530 GenerateArg(Args, OPT_fcxx_abi_EQ, TargetCXXABI::getSpelling(*Opts.CXXABI),
3531 SA);
3532 }
3533
ParseLangArgs(LangOptions & Opts,ArgList & Args,InputKind IK,const llvm::Triple & T,std::vector<std::string> & Includes,DiagnosticsEngine & Diags)3534 bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args,
3535 InputKind IK, const llvm::Triple &T,
3536 std::vector<std::string> &Includes,
3537 DiagnosticsEngine &Diags) {
3538 unsigned NumErrorsBefore = Diags.getNumErrors();
3539
3540 if (IK.getFormat() == InputKind::Precompiled ||
3541 IK.getLanguage() == Language::LLVM_IR) {
3542 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
3543 // PassManager in BackendUtil.cpp. They need to be initialized no matter
3544 // what the input type is.
3545 if (Args.hasArg(OPT_fobjc_arc))
3546 Opts.ObjCAutoRefCount = 1;
3547 // PICLevel and PIELevel are needed during code generation and this should
3548 // be set regardless of the input type.
3549 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
3550 Opts.PIE = Args.hasArg(OPT_pic_is_pie);
3551 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
3552 Diags, Opts.Sanitize);
3553
3554 return Diags.getNumErrors() == NumErrorsBefore;
3555 }
3556
3557 // Other LangOpts are only initialized when the input is not AST or LLVM IR.
3558 // FIXME: Should we really be parsing this for an Language::Asm input?
3559
3560 // FIXME: Cleanup per-file based stuff.
3561 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
3562 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
3563 LangStd = LangStandard::getLangKind(A->getValue());
3564 if (LangStd == LangStandard::lang_unspecified) {
3565 Diags.Report(diag::err_drv_invalid_value)
3566 << A->getAsString(Args) << A->getValue();
3567 // Report supported standards with short description.
3568 for (unsigned KindValue = 0;
3569 KindValue != LangStandard::lang_unspecified;
3570 ++KindValue) {
3571 const LangStandard &Std = LangStandard::getLangStandardForKind(
3572 static_cast<LangStandard::Kind>(KindValue));
3573 if (IsInputCompatibleWithStandard(IK, Std)) {
3574 auto Diag = Diags.Report(diag::note_drv_use_standard);
3575 Diag << Std.getName() << Std.getDescription();
3576 unsigned NumAliases = 0;
3577 #define LANGSTANDARD(id, name, lang, desc, features)
3578 #define LANGSTANDARD_ALIAS(id, alias) \
3579 if (KindValue == LangStandard::lang_##id) ++NumAliases;
3580 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
3581 #include "clang/Basic/LangStandards.def"
3582 Diag << NumAliases;
3583 #define LANGSTANDARD(id, name, lang, desc, features)
3584 #define LANGSTANDARD_ALIAS(id, alias) \
3585 if (KindValue == LangStandard::lang_##id) Diag << alias;
3586 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
3587 #include "clang/Basic/LangStandards.def"
3588 }
3589 }
3590 } else {
3591 // Valid standard, check to make sure language and standard are
3592 // compatible.
3593 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
3594 if (!IsInputCompatibleWithStandard(IK, Std)) {
3595 Diags.Report(diag::err_drv_argument_not_allowed_with)
3596 << A->getAsString(Args) << GetInputKindName(IK);
3597 }
3598 }
3599 }
3600
3601 // -cl-std only applies for OpenCL language standards.
3602 // Override the -std option in this case.
3603 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
3604 LangStandard::Kind OpenCLLangStd
3605 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
3606 .Cases("cl", "CL", LangStandard::lang_opencl10)
3607 .Cases("cl1.0", "CL1.0", LangStandard::lang_opencl10)
3608 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
3609 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
3610 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
3611 .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30)
3612 .Cases("clc++", "CLC++", LangStandard::lang_openclcpp)
3613 .Default(LangStandard::lang_unspecified);
3614
3615 if (OpenCLLangStd == LangStandard::lang_unspecified) {
3616 Diags.Report(diag::err_drv_invalid_value)
3617 << A->getAsString(Args) << A->getValue();
3618 }
3619 else
3620 LangStd = OpenCLLangStd;
3621 }
3622
3623 // These need to be parsed now. They are used to set OpenCL defaults.
3624 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
3625 Opts.DeclareOpenCLBuiltins = Args.hasArg(OPT_fdeclare_opencl_builtins);
3626
3627 CompilerInvocation::setLangDefaults(Opts, IK, T, Includes, LangStd);
3628
3629 // The key paths of codegen options defined in Options.td start with
3630 // "LangOpts->". Let's provide the expected variable name and type.
3631 LangOptions *LangOpts = &Opts;
3632
3633 #define LANG_OPTION_WITH_MARSHALLING( \
3634 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
3635 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
3636 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
3637 MERGER, EXTRACTOR, TABLE_INDEX) \
3638 PARSE_OPTION_WITH_MARSHALLING( \
3639 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
3640 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
3641 #include "clang/Driver/Options.inc"
3642 #undef LANG_OPTION_WITH_MARSHALLING
3643
3644 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
3645 StringRef Name = A->getValue();
3646 if (Name == "full" || Name == "branch") {
3647 Opts.CFProtectionBranch = 1;
3648 }
3649 }
3650
3651 if ((Args.hasArg(OPT_fsycl_is_device) || Args.hasArg(OPT_fsycl_is_host)) &&
3652 !Args.hasArg(OPT_sycl_std_EQ)) {
3653 // If the user supplied -fsycl-is-device or -fsycl-is-host, but failed to
3654 // provide -sycl-std=, we want to default it to whatever the default SYCL
3655 // version is. I could not find a way to express this with the options
3656 // tablegen because we still want this value to be SYCL_None when the user
3657 // is not in device or host mode.
3658 Opts.setSYCLVersion(LangOptions::SYCL_Default);
3659 }
3660
3661 if (Opts.ObjC) {
3662 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
3663 StringRef value = arg->getValue();
3664 if (Opts.ObjCRuntime.tryParse(value))
3665 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
3666 }
3667
3668 if (Args.hasArg(OPT_fobjc_gc_only))
3669 Opts.setGC(LangOptions::GCOnly);
3670 else if (Args.hasArg(OPT_fobjc_gc))
3671 Opts.setGC(LangOptions::HybridGC);
3672 else if (Args.hasArg(OPT_fobjc_arc)) {
3673 Opts.ObjCAutoRefCount = 1;
3674 if (!Opts.ObjCRuntime.allowsARC())
3675 Diags.Report(diag::err_arc_unsupported_on_runtime);
3676 }
3677
3678 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
3679 // whether the feature is actually enabled. This is predominantly
3680 // determined by -fobjc-runtime, but we allow it to be overridden
3681 // from the command line for testing purposes.
3682 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
3683 Opts.ObjCWeakRuntime = 1;
3684 else
3685 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
3686
3687 // ObjCWeak determines whether __weak is actually enabled.
3688 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
3689 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
3690 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
3691 assert(!Opts.ObjCWeak);
3692 } else if (Opts.getGC() != LangOptions::NonGC) {
3693 Diags.Report(diag::err_objc_weak_with_gc);
3694 } else if (!Opts.ObjCWeakRuntime) {
3695 Diags.Report(diag::err_objc_weak_unsupported);
3696 } else {
3697 Opts.ObjCWeak = 1;
3698 }
3699 } else if (Opts.ObjCAutoRefCount) {
3700 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
3701 }
3702
3703 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
3704 Opts.ObjCSubscriptingLegacyRuntime =
3705 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
3706 }
3707
3708 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {
3709 // Check that the version has 1 to 3 components and the minor and patch
3710 // versions fit in two decimal digits.
3711 VersionTuple GNUCVer;
3712 bool Invalid = GNUCVer.tryParse(A->getValue());
3713 unsigned Major = GNUCVer.getMajor();
3714 unsigned Minor = GNUCVer.getMinor().getValueOr(0);
3715 unsigned Patch = GNUCVer.getSubminor().getValueOr(0);
3716 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
3717 Diags.Report(diag::err_drv_invalid_value)
3718 << A->getAsString(Args) << A->getValue();
3719 }
3720 Opts.GNUCVersion = Major * 100 * 100 + Minor * 100 + Patch;
3721 }
3722
3723 // In AIX OS, the -mignore-xcoff-visibility is enable by default if there is
3724 // no -fvisibility=* option.
3725 // This is the reason why '-fvisibility' needs to be always generated:
3726 // its absence implies '-mignore-xcoff-visibility'.
3727 //
3728 // Suppose the original cc1 command line does contain '-fvisibility default':
3729 // '-mignore-xcoff-visibility' should not be implied.
3730 // * If '-fvisibility' is not generated (as most options with default values
3731 // don't), its absence would imply '-mignore-xcoff-visibility'. This changes
3732 // the command line semantics.
3733 // * If '-fvisibility' is generated regardless of its presence and value,
3734 // '-mignore-xcoff-visibility' won't be implied and the command line
3735 // semantics are kept intact.
3736 //
3737 // When the original cc1 command line does **not** contain '-fvisibility',
3738 // '-mignore-xcoff-visibility' is implied. The generated command line will
3739 // contain both '-fvisibility default' and '-mignore-xcoff-visibility' and
3740 // subsequent calls to `CreateFromArgs`/`generateCC1CommandLine` will always
3741 // produce the same arguments.
3742
3743 if (T.isOSAIX() && (Args.hasArg(OPT_mignore_xcoff_visibility) ||
3744 !Args.hasArg(OPT_fvisibility)))
3745 Opts.IgnoreXCOFFVisibility = 1;
3746
3747 if (Args.hasArg(OPT_ftrapv)) {
3748 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
3749 // Set the handler, if one is specified.
3750 Opts.OverflowHandler =
3751 std::string(Args.getLastArgValue(OPT_ftrapv_handler));
3752 }
3753 else if (Args.hasArg(OPT_fwrapv))
3754 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
3755
3756 Opts.MSCompatibilityVersion = 0;
3757 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
3758 VersionTuple VT;
3759 if (VT.tryParse(A->getValue()))
3760 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
3761 << A->getValue();
3762 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
3763 VT.getMinor().getValueOr(0) * 100000 +
3764 VT.getSubminor().getValueOr(0);
3765 }
3766
3767 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs
3768 // is specified, or -std is set to a conforming mode.
3769 // Trigraphs are disabled by default in c++1z onwards.
3770 // For z/OS, trigraphs are enabled by default (without regard to the above).
3771 Opts.Trigraphs =
3772 (!Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17) || T.isOSzOS();
3773 Opts.Trigraphs =
3774 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
3775
3776 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL
3777 && Opts.OpenCLVersion == 200);
3778
3779 Opts.ConvergentFunctions = Opts.OpenCL || (Opts.CUDA && Opts.CUDAIsDevice) ||
3780 Opts.SYCLIsDevice ||
3781 Args.hasArg(OPT_fconvergent_functions);
3782
3783 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
3784 if (!Opts.NoBuiltin)
3785 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
3786 Opts.LongDoubleSize = Args.hasArg(OPT_mlong_double_128)
3787 ? 128
3788 : Args.hasArg(OPT_mlong_double_64) ? 64 : 0;
3789 if (Opts.FastRelaxedMath)
3790 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
3791 llvm::sort(Opts.ModuleFeatures);
3792
3793 // -mrtd option
3794 if (Arg *A = Args.getLastArg(OPT_mrtd)) {
3795 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
3796 Diags.Report(diag::err_drv_argument_not_allowed_with)
3797 << A->getSpelling() << "-fdefault-calling-conv";
3798 else {
3799 if (T.getArch() != llvm::Triple::x86)
3800 Diags.Report(diag::err_drv_argument_not_allowed_with)
3801 << A->getSpelling() << T.getTriple();
3802 else
3803 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
3804 }
3805 }
3806
3807 // Check if -fopenmp is specified and set default version to 5.0.
3808 Opts.OpenMP = Args.hasArg(OPT_fopenmp) ? 50 : 0;
3809 // Check if -fopenmp-simd is specified.
3810 bool IsSimdSpecified =
3811 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd,
3812 /*Default=*/false);
3813 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified;
3814 Opts.OpenMPUseTLS =
3815 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
3816 Opts.OpenMPIsDevice =
3817 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
3818 Opts.OpenMPIRBuilder =
3819 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_enable_irbuilder);
3820 bool IsTargetSpecified =
3821 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ);
3822
3823 Opts.ConvergentFunctions = Opts.ConvergentFunctions || Opts.OpenMPIsDevice;
3824
3825 if (Opts.OpenMP || Opts.OpenMPSimd) {
3826 if (int Version = getLastArgIntValue(
3827 Args, OPT_fopenmp_version_EQ,
3828 (IsSimdSpecified || IsTargetSpecified) ? 50 : Opts.OpenMP, Diags))
3829 Opts.OpenMP = Version;
3830 // Provide diagnostic when a given target is not expected to be an OpenMP
3831 // device or host.
3832 if (!Opts.OpenMPIsDevice) {
3833 switch (T.getArch()) {
3834 default:
3835 break;
3836 // Add unsupported host targets here:
3837 case llvm::Triple::nvptx:
3838 case llvm::Triple::nvptx64:
3839 Diags.Report(diag::err_drv_omp_host_target_not_supported) << T.str();
3840 break;
3841 }
3842 }
3843 }
3844
3845 // Set the flag to prevent the implementation from emitting device exception
3846 // handling code for those requiring so.
3847 if ((Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN())) ||
3848 Opts.OpenCLCPlusPlus) {
3849 Opts.Exceptions = 0;
3850 Opts.CXXExceptions = 0;
3851 }
3852 if (Opts.OpenMPIsDevice && T.isNVPTX()) {
3853 Opts.OpenMPCUDANumSMs =
3854 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ,
3855 Opts.OpenMPCUDANumSMs, Diags);
3856 Opts.OpenMPCUDABlocksPerSM =
3857 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ,
3858 Opts.OpenMPCUDABlocksPerSM, Diags);
3859 Opts.OpenMPCUDAReductionBufNum = getLastArgIntValue(
3860 Args, options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ,
3861 Opts.OpenMPCUDAReductionBufNum, Diags);
3862 }
3863
3864 // Get the OpenMP target triples if any.
3865 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) {
3866 enum ArchPtrSize { Arch16Bit, Arch32Bit, Arch64Bit };
3867 auto getArchPtrSize = [](const llvm::Triple &T) {
3868 if (T.isArch16Bit())
3869 return Arch16Bit;
3870 if (T.isArch32Bit())
3871 return Arch32Bit;
3872 assert(T.isArch64Bit() && "Expected 64-bit architecture");
3873 return Arch64Bit;
3874 };
3875
3876 for (unsigned i = 0; i < A->getNumValues(); ++i) {
3877 llvm::Triple TT(A->getValue(i));
3878
3879 if (TT.getArch() == llvm::Triple::UnknownArch ||
3880 !(TT.getArch() == llvm::Triple::aarch64 || TT.isPPC() ||
3881 TT.getArch() == llvm::Triple::nvptx ||
3882 TT.getArch() == llvm::Triple::nvptx64 ||
3883 TT.getArch() == llvm::Triple::amdgcn ||
3884 TT.getArch() == llvm::Triple::x86 ||
3885 TT.getArch() == llvm::Triple::x86_64))
3886 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i);
3887 else if (getArchPtrSize(T) != getArchPtrSize(TT))
3888 Diags.Report(diag::err_drv_incompatible_omp_arch)
3889 << A->getValue(i) << T.str();
3890 else
3891 Opts.OMPTargetTriples.push_back(TT);
3892 }
3893 }
3894
3895 // Get OpenMP host file path if any and report if a non existent file is
3896 // found
3897 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
3898 Opts.OMPHostIRFile = A->getValue();
3899 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
3900 Diags.Report(diag::err_drv_omp_host_ir_file_not_found)
3901 << Opts.OMPHostIRFile;
3902 }
3903
3904 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options
3905 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) &&
3906 Args.hasArg(options::OPT_fopenmp_cuda_mode);
3907
3908 // Set CUDA support for parallel execution of target regions for OpenMP target
3909 // NVPTX/AMDGCN if specified in options.
3910 Opts.OpenMPCUDATargetParallel =
3911 Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) &&
3912 Args.hasArg(options::OPT_fopenmp_cuda_parallel_target_regions);
3913
3914 // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options
3915 Opts.OpenMPCUDAForceFullRuntime =
3916 Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) &&
3917 Args.hasArg(options::OPT_fopenmp_cuda_force_full_runtime);
3918
3919 // FIXME: Eliminate this dependency.
3920 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
3921 OptSize = getOptimizationLevelSize(Args);
3922 Opts.Optimize = Opt != 0;
3923 Opts.OptimizeSize = OptSize != 0;
3924
3925 // This is the __NO_INLINE__ define, which just depends on things like the
3926 // optimization level and -fno-inline, not actually whether the backend has
3927 // inlining enabled.
3928 Opts.NoInlineDefine = !Opts.Optimize;
3929 if (Arg *InlineArg = Args.getLastArg(
3930 options::OPT_finline_functions, options::OPT_finline_hint_functions,
3931 options::OPT_fno_inline_functions, options::OPT_fno_inline))
3932 if (InlineArg->getOption().matches(options::OPT_fno_inline))
3933 Opts.NoInlineDefine = true;
3934
3935 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
3936 StringRef Val = A->getValue();
3937 if (Val == "fast")
3938 Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
3939 else if (Val == "on")
3940 Opts.setDefaultFPContractMode(LangOptions::FPM_On);
3941 else if (Val == "off")
3942 Opts.setDefaultFPContractMode(LangOptions::FPM_Off);
3943 else if (Val == "fast-honor-pragmas")
3944 Opts.setDefaultFPContractMode(LangOptions::FPM_FastHonorPragmas);
3945 else
3946 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
3947 }
3948
3949 // Parse -fsanitize= arguments.
3950 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
3951 Diags, Opts.Sanitize);
3952 Opts.NoSanitizeFiles = Args.getAllArgValues(OPT_fsanitize_ignorelist_EQ);
3953 std::vector<std::string> systemIgnorelists =
3954 Args.getAllArgValues(OPT_fsanitize_system_ignorelist_EQ);
3955 Opts.NoSanitizeFiles.insert(Opts.NoSanitizeFiles.end(),
3956 systemIgnorelists.begin(),
3957 systemIgnorelists.end());
3958
3959 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) {
3960 Opts.setClangABICompat(LangOptions::ClangABI::Latest);
3961
3962 StringRef Ver = A->getValue();
3963 std::pair<StringRef, StringRef> VerParts = Ver.split('.');
3964 unsigned Major, Minor = 0;
3965
3966 // Check the version number is valid: either 3.x (0 <= x <= 9) or
3967 // y or y.0 (4 <= y <= current version).
3968 if (!VerParts.first.startswith("0") &&
3969 !VerParts.first.getAsInteger(10, Major) &&
3970 3 <= Major && Major <= CLANG_VERSION_MAJOR &&
3971 (Major == 3 ? VerParts.second.size() == 1 &&
3972 !VerParts.second.getAsInteger(10, Minor)
3973 : VerParts.first.size() == Ver.size() ||
3974 VerParts.second == "0")) {
3975 // Got a valid version number.
3976 if (Major == 3 && Minor <= 8)
3977 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8);
3978 else if (Major <= 4)
3979 Opts.setClangABICompat(LangOptions::ClangABI::Ver4);
3980 else if (Major <= 6)
3981 Opts.setClangABICompat(LangOptions::ClangABI::Ver6);
3982 else if (Major <= 7)
3983 Opts.setClangABICompat(LangOptions::ClangABI::Ver7);
3984 else if (Major <= 9)
3985 Opts.setClangABICompat(LangOptions::ClangABI::Ver9);
3986 else if (Major <= 11)
3987 Opts.setClangABICompat(LangOptions::ClangABI::Ver11);
3988 else if (Major <= 12)
3989 Opts.setClangABICompat(LangOptions::ClangABI::Ver12);
3990 } else if (Ver != "latest") {
3991 Diags.Report(diag::err_drv_invalid_value)
3992 << A->getAsString(Args) << A->getValue();
3993 }
3994 }
3995
3996 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) {
3997 StringRef SignScope = A->getValue();
3998
3999 if (SignScope.equals_lower("none"))
4000 Opts.setSignReturnAddressScope(
4001 LangOptions::SignReturnAddressScopeKind::None);
4002 else if (SignScope.equals_lower("all"))
4003 Opts.setSignReturnAddressScope(
4004 LangOptions::SignReturnAddressScopeKind::All);
4005 else if (SignScope.equals_lower("non-leaf"))
4006 Opts.setSignReturnAddressScope(
4007 LangOptions::SignReturnAddressScopeKind::NonLeaf);
4008 else
4009 Diags.Report(diag::err_drv_invalid_value)
4010 << A->getAsString(Args) << SignScope;
4011
4012 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) {
4013 StringRef SignKey = A->getValue();
4014 if (!SignScope.empty() && !SignKey.empty()) {
4015 if (SignKey.equals_lower("a_key"))
4016 Opts.setSignReturnAddressKey(
4017 LangOptions::SignReturnAddressKeyKind::AKey);
4018 else if (SignKey.equals_lower("b_key"))
4019 Opts.setSignReturnAddressKey(
4020 LangOptions::SignReturnAddressKeyKind::BKey);
4021 else
4022 Diags.Report(diag::err_drv_invalid_value)
4023 << A->getAsString(Args) << SignKey;
4024 }
4025 }
4026 }
4027
4028 // The value can be empty, which indicates the system default should be used.
4029 StringRef CXXABI = Args.getLastArgValue(OPT_fcxx_abi_EQ);
4030 if (!CXXABI.empty()) {
4031 if (!TargetCXXABI::isABI(CXXABI)) {
4032 Diags.Report(diag::err_invalid_cxx_abi) << CXXABI;
4033 } else {
4034 auto Kind = TargetCXXABI::getKind(CXXABI);
4035 if (!TargetCXXABI::isSupportedCXXABI(T, Kind))
4036 Diags.Report(diag::err_unsupported_cxx_abi) << CXXABI << T.str();
4037 else
4038 Opts.CXXABI = Kind;
4039 }
4040 }
4041
4042 return Diags.getNumErrors() == NumErrorsBefore;
4043 }
4044
isStrictlyPreprocessorAction(frontend::ActionKind Action)4045 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
4046 switch (Action) {
4047 case frontend::ASTDeclList:
4048 case frontend::ASTDump:
4049 case frontend::ASTPrint:
4050 case frontend::ASTView:
4051 case frontend::EmitAssembly:
4052 case frontend::EmitBC:
4053 case frontend::EmitHTML:
4054 case frontend::EmitLLVM:
4055 case frontend::EmitLLVMOnly:
4056 case frontend::EmitCodeGenOnly:
4057 case frontend::EmitObj:
4058 case frontend::FixIt:
4059 case frontend::GenerateModule:
4060 case frontend::GenerateModuleInterface:
4061 case frontend::GenerateHeaderModule:
4062 case frontend::GeneratePCH:
4063 case frontend::GenerateInterfaceStubs:
4064 case frontend::ParseSyntaxOnly:
4065 case frontend::ModuleFileInfo:
4066 case frontend::VerifyPCH:
4067 case frontend::PluginAction:
4068 case frontend::RewriteObjC:
4069 case frontend::RewriteTest:
4070 case frontend::RunAnalysis:
4071 case frontend::TemplightDump:
4072 case frontend::MigrateSource:
4073 return false;
4074
4075 case frontend::DumpCompilerOptions:
4076 case frontend::DumpRawTokens:
4077 case frontend::DumpTokens:
4078 case frontend::InitOnly:
4079 case frontend::PrintPreamble:
4080 case frontend::PrintPreprocessedInput:
4081 case frontend::RewriteMacros:
4082 case frontend::RunPreprocessorOnly:
4083 case frontend::PrintDependencyDirectivesSourceMinimizerOutput:
4084 return true;
4085 }
4086 llvm_unreachable("invalid frontend action");
4087 }
4088
GeneratePreprocessorArgs(PreprocessorOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA,const LangOptions & LangOpts,const FrontendOptions & FrontendOpts,const CodeGenOptions & CodeGenOpts)4089 static void GeneratePreprocessorArgs(PreprocessorOptions &Opts,
4090 SmallVectorImpl<const char *> &Args,
4091 CompilerInvocation::StringAllocator SA,
4092 const LangOptions &LangOpts,
4093 const FrontendOptions &FrontendOpts,
4094 const CodeGenOptions &CodeGenOpts) {
4095 PreprocessorOptions *PreprocessorOpts = &Opts;
4096
4097 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \
4098 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
4099 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
4100 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
4101 MERGER, EXTRACTOR, TABLE_INDEX) \
4102 GENERATE_OPTION_WITH_MARSHALLING( \
4103 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
4104 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
4105 #include "clang/Driver/Options.inc"
4106 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING
4107
4108 if (Opts.PCHWithHdrStop && !Opts.PCHWithHdrStopCreate)
4109 GenerateArg(Args, OPT_pch_through_hdrstop_use, SA);
4110
4111 for (const auto &D : Opts.DeserializedPCHDeclsToErrorOn)
4112 GenerateArg(Args, OPT_error_on_deserialized_pch_decl, D, SA);
4113
4114 for (const auto &MP : Opts.MacroPrefixMap)
4115 GenerateArg(Args, OPT_fmacro_prefix_map_EQ, MP.first + "=" + MP.second, SA);
4116
4117 if (Opts.PrecompiledPreambleBytes != std::make_pair(0u, false))
4118 GenerateArg(Args, OPT_preamble_bytes_EQ,
4119 Twine(Opts.PrecompiledPreambleBytes.first) + "," +
4120 (Opts.PrecompiledPreambleBytes.second ? "1" : "0"),
4121 SA);
4122
4123 for (const auto &M : Opts.Macros) {
4124 // Don't generate __CET__ macro definitions. They are implied by the
4125 // -fcf-protection option that is generated elsewhere.
4126 if (M.first == "__CET__=1" && !M.second &&
4127 !CodeGenOpts.CFProtectionReturn && CodeGenOpts.CFProtectionBranch)
4128 continue;
4129 if (M.first == "__CET__=2" && !M.second && CodeGenOpts.CFProtectionReturn &&
4130 !CodeGenOpts.CFProtectionBranch)
4131 continue;
4132 if (M.first == "__CET__=3" && !M.second && CodeGenOpts.CFProtectionReturn &&
4133 CodeGenOpts.CFProtectionBranch)
4134 continue;
4135
4136 GenerateArg(Args, M.second ? OPT_U : OPT_D, M.first, SA);
4137 }
4138
4139 for (const auto &I : Opts.Includes) {
4140 // Don't generate OpenCL includes. They are implied by other flags that are
4141 // generated elsewhere.
4142 if (LangOpts.OpenCL && LangOpts.IncludeDefaultHeader &&
4143 ((LangOpts.DeclareOpenCLBuiltins && I == "opencl-c-base.h") ||
4144 I == "opencl-c.h"))
4145 continue;
4146
4147 GenerateArg(Args, OPT_include, I, SA);
4148 }
4149
4150 for (const auto &CI : Opts.ChainedIncludes)
4151 GenerateArg(Args, OPT_chain_include, CI, SA);
4152
4153 for (const auto &RF : Opts.RemappedFiles)
4154 GenerateArg(Args, OPT_remap_file, RF.first + ";" + RF.second, SA);
4155
4156 // Don't handle LexEditorPlaceholders. It is implied by the action that is
4157 // generated elsewhere.
4158 }
4159
ParsePreprocessorArgs(PreprocessorOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags,frontend::ActionKind Action,const FrontendOptions & FrontendOpts)4160 static bool ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
4161 DiagnosticsEngine &Diags,
4162 frontend::ActionKind Action,
4163 const FrontendOptions &FrontendOpts) {
4164 unsigned NumErrorsBefore = Diags.getNumErrors();
4165
4166 PreprocessorOptions *PreprocessorOpts = &Opts;
4167
4168 #define PREPROCESSOR_OPTION_WITH_MARSHALLING( \
4169 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
4170 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
4171 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
4172 MERGER, EXTRACTOR, TABLE_INDEX) \
4173 PARSE_OPTION_WITH_MARSHALLING( \
4174 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
4175 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
4176 #include "clang/Driver/Options.inc"
4177 #undef PREPROCESSOR_OPTION_WITH_MARSHALLING
4178
4179 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) ||
4180 Args.hasArg(OPT_pch_through_hdrstop_use);
4181
4182 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
4183 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
4184
4185 for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ)) {
4186 auto Split = StringRef(A).split('=');
4187 Opts.MacroPrefixMap.insert(
4188 {std::string(Split.first), std::string(Split.second)});
4189 }
4190
4191 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
4192 StringRef Value(A->getValue());
4193 size_t Comma = Value.find(',');
4194 unsigned Bytes = 0;
4195 unsigned EndOfLine = 0;
4196
4197 if (Comma == StringRef::npos ||
4198 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
4199 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
4200 Diags.Report(diag::err_drv_preamble_format);
4201 else {
4202 Opts.PrecompiledPreambleBytes.first = Bytes;
4203 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
4204 }
4205 }
4206
4207 // Add the __CET__ macro if a CFProtection option is set.
4208 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
4209 StringRef Name = A->getValue();
4210 if (Name == "branch")
4211 Opts.addMacroDef("__CET__=1");
4212 else if (Name == "return")
4213 Opts.addMacroDef("__CET__=2");
4214 else if (Name == "full")
4215 Opts.addMacroDef("__CET__=3");
4216 }
4217
4218 // Add macros from the command line.
4219 for (const auto *A : Args.filtered(OPT_D, OPT_U)) {
4220 if (A->getOption().matches(OPT_D))
4221 Opts.addMacroDef(A->getValue());
4222 else
4223 Opts.addMacroUndef(A->getValue());
4224 }
4225
4226 // Add the ordered list of -includes.
4227 for (const auto *A : Args.filtered(OPT_include))
4228 Opts.Includes.emplace_back(A->getValue());
4229
4230 for (const auto *A : Args.filtered(OPT_chain_include))
4231 Opts.ChainedIncludes.emplace_back(A->getValue());
4232
4233 for (const auto *A : Args.filtered(OPT_remap_file)) {
4234 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
4235
4236 if (Split.second.empty()) {
4237 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
4238 continue;
4239 }
4240
4241 Opts.addRemappedFile(Split.first, Split.second);
4242 }
4243
4244 // Always avoid lexing editor placeholders when we're just running the
4245 // preprocessor as we never want to emit the
4246 // "editor placeholder in source file" error in PP only mode.
4247 if (isStrictlyPreprocessorAction(Action))
4248 Opts.LexEditorPlaceholders = false;
4249
4250 return Diags.getNumErrors() == NumErrorsBefore;
4251 }
4252
GeneratePreprocessorOutputArgs(const PreprocessorOutputOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA,frontend::ActionKind Action)4253 static void GeneratePreprocessorOutputArgs(
4254 const PreprocessorOutputOptions &Opts, SmallVectorImpl<const char *> &Args,
4255 CompilerInvocation::StringAllocator SA, frontend::ActionKind Action) {
4256 const PreprocessorOutputOptions &PreprocessorOutputOpts = Opts;
4257
4258 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \
4259 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
4260 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
4261 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
4262 MERGER, EXTRACTOR, TABLE_INDEX) \
4263 GENERATE_OPTION_WITH_MARSHALLING( \
4264 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
4265 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
4266 #include "clang/Driver/Options.inc"
4267 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING
4268
4269 bool Generate_dM = isStrictlyPreprocessorAction(Action) && !Opts.ShowCPP;
4270 if (Generate_dM)
4271 GenerateArg(Args, OPT_dM, SA);
4272 if (!Generate_dM && Opts.ShowMacros)
4273 GenerateArg(Args, OPT_dD, SA);
4274 }
4275
ParsePreprocessorOutputArgs(PreprocessorOutputOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags,frontend::ActionKind Action)4276 static bool ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
4277 ArgList &Args, DiagnosticsEngine &Diags,
4278 frontend::ActionKind Action) {
4279 unsigned NumErrorsBefore = Diags.getNumErrors();
4280
4281 PreprocessorOutputOptions &PreprocessorOutputOpts = Opts;
4282
4283 #define PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING( \
4284 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
4285 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
4286 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
4287 MERGER, EXTRACTOR, TABLE_INDEX) \
4288 PARSE_OPTION_WITH_MARSHALLING( \
4289 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
4290 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
4291 #include "clang/Driver/Options.inc"
4292 #undef PREPROCESSOR_OUTPUT_OPTION_WITH_MARSHALLING
4293
4294 Opts.ShowCPP = isStrictlyPreprocessorAction(Action) && !Args.hasArg(OPT_dM);
4295 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
4296
4297 return Diags.getNumErrors() == NumErrorsBefore;
4298 }
4299
GenerateTargetArgs(const TargetOptions & Opts,SmallVectorImpl<const char * > & Args,CompilerInvocation::StringAllocator SA)4300 static void GenerateTargetArgs(const TargetOptions &Opts,
4301 SmallVectorImpl<const char *> &Args,
4302 CompilerInvocation::StringAllocator SA) {
4303 const TargetOptions *TargetOpts = &Opts;
4304 #define TARGET_OPTION_WITH_MARSHALLING( \
4305 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
4306 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
4307 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
4308 MERGER, EXTRACTOR, TABLE_INDEX) \
4309 GENERATE_OPTION_WITH_MARSHALLING( \
4310 Args, SA, KIND, FLAGS, SPELLING, ALWAYS_EMIT, KEYPATH, DEFAULT_VALUE, \
4311 IMPLIED_CHECK, IMPLIED_VALUE, DENORMALIZER, EXTRACTOR, TABLE_INDEX)
4312 #include "clang/Driver/Options.inc"
4313 #undef TARGET_OPTION_WITH_MARSHALLING
4314
4315 if (!Opts.SDKVersion.empty())
4316 GenerateArg(Args, OPT_target_sdk_version_EQ, Opts.SDKVersion.getAsString(),
4317 SA);
4318 }
4319
ParseTargetArgs(TargetOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)4320 static bool ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
4321 DiagnosticsEngine &Diags) {
4322 unsigned NumErrorsBefore = Diags.getNumErrors();
4323
4324 TargetOptions *TargetOpts = &Opts;
4325
4326 #define TARGET_OPTION_WITH_MARSHALLING( \
4327 PREFIX_TYPE, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
4328 HELPTEXT, METAVAR, VALUES, SPELLING, SHOULD_PARSE, ALWAYS_EMIT, KEYPATH, \
4329 DEFAULT_VALUE, IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, DENORMALIZER, \
4330 MERGER, EXTRACTOR, TABLE_INDEX) \
4331 PARSE_OPTION_WITH_MARSHALLING( \
4332 Args, Diags, ID, FLAGS, PARAM, SHOULD_PARSE, KEYPATH, DEFAULT_VALUE, \
4333 IMPLIED_CHECK, IMPLIED_VALUE, NORMALIZER, MERGER, TABLE_INDEX)
4334 #include "clang/Driver/Options.inc"
4335 #undef TARGET_OPTION_WITH_MARSHALLING
4336
4337 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) {
4338 llvm::VersionTuple Version;
4339 if (Version.tryParse(A->getValue()))
4340 Diags.Report(diag::err_drv_invalid_value)
4341 << A->getAsString(Args) << A->getValue();
4342 else
4343 Opts.SDKVersion = Version;
4344 }
4345
4346 return Diags.getNumErrors() == NumErrorsBefore;
4347 }
4348
CreateFromArgsImpl(CompilerInvocation & Res,ArrayRef<const char * > CommandLineArgs,DiagnosticsEngine & Diags,const char * Argv0)4349 bool CompilerInvocation::CreateFromArgsImpl(
4350 CompilerInvocation &Res, ArrayRef<const char *> CommandLineArgs,
4351 DiagnosticsEngine &Diags, const char *Argv0) {
4352 unsigned NumErrorsBefore = Diags.getNumErrors();
4353
4354 // Parse the arguments.
4355 const OptTable &Opts = getDriverOptTable();
4356 const unsigned IncludedFlagsBitmask = options::CC1Option;
4357 unsigned MissingArgIndex, MissingArgCount;
4358 InputArgList Args = Opts.ParseArgs(CommandLineArgs, MissingArgIndex,
4359 MissingArgCount, IncludedFlagsBitmask);
4360 LangOptions &LangOpts = *Res.getLangOpts();
4361
4362 // Check for missing argument error.
4363 if (MissingArgCount)
4364 Diags.Report(diag::err_drv_missing_argument)
4365 << Args.getArgString(MissingArgIndex) << MissingArgCount;
4366
4367 // Issue errors on unknown arguments.
4368 for (const auto *A : Args.filtered(OPT_UNKNOWN)) {
4369 auto ArgString = A->getAsString(Args);
4370 std::string Nearest;
4371 if (Opts.findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1)
4372 Diags.Report(diag::err_drv_unknown_argument) << ArgString;
4373 else
4374 Diags.Report(diag::err_drv_unknown_argument_with_suggestion)
4375 << ArgString << Nearest;
4376 }
4377
4378 ParseFileSystemArgs(Res.getFileSystemOpts(), Args, Diags);
4379 ParseMigratorArgs(Res.getMigratorOpts(), Args, Diags);
4380 ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
4381 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags,
4382 /*DefaultDiagColor=*/false);
4383 ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags, LangOpts.IsHeaderFile);
4384 // FIXME: We shouldn't have to pass the DashX option around here
4385 InputKind DashX = Res.getFrontendOpts().DashX;
4386 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
4387 llvm::Triple T(Res.getTargetOpts().Triple);
4388 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args, Diags,
4389 Res.getFileSystemOpts().WorkingDir);
4390
4391 ParseLangArgs(LangOpts, Args, DashX, T, Res.getPreprocessorOpts().Includes,
4392 Diags);
4393 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
4394 LangOpts.ObjCExceptions = 1;
4395
4396 if (LangOpts.CUDA) {
4397 // During CUDA device-side compilation, the aux triple is the
4398 // triple used for host compilation.
4399 if (LangOpts.CUDAIsDevice)
4400 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
4401 }
4402
4403 // Set the triple of the host for OpenMP device compile.
4404 if (LangOpts.OpenMPIsDevice)
4405 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
4406
4407 ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, T,
4408 Res.getFrontendOpts().OutputFile, LangOpts);
4409
4410 // FIXME: Override value name discarding when asan or msan is used because the
4411 // backend passes depend on the name of the alloca in order to print out
4412 // names.
4413 Res.getCodeGenOpts().DiscardValueNames &=
4414 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
4415 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) &&
4416 !LangOpts.Sanitize.has(SanitizerKind::Memory) &&
4417 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory);
4418
4419 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags,
4420 Res.getFrontendOpts().ProgramAction,
4421 Res.getFrontendOpts());
4422 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, Diags,
4423 Res.getFrontendOpts().ProgramAction);
4424
4425 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args, Diags,
4426 Res.getFrontendOpts().ProgramAction,
4427 Res.getPreprocessorOutputOpts().ShowLineMarkers);
4428 if (!Res.getDependencyOutputOpts().OutputFile.empty() &&
4429 Res.getDependencyOutputOpts().Targets.empty())
4430 Diags.Report(diag::err_fe_dependency_file_requires_MT);
4431
4432 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses.
4433 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses &&
4434 !Res.getLangOpts()->Sanitize.empty()) {
4435 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false;
4436 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored);
4437 }
4438
4439 // Store the command-line for using in the CodeView backend.
4440 Res.getCodeGenOpts().Argv0 = Argv0;
4441 Res.getCodeGenOpts().CommandLineArgs = CommandLineArgs;
4442
4443 FixupInvocation(Res, Diags, Args, DashX);
4444
4445 return Diags.getNumErrors() == NumErrorsBefore;
4446 }
4447
CreateFromArgs(CompilerInvocation & Invocation,ArrayRef<const char * > CommandLineArgs,DiagnosticsEngine & Diags,const char * Argv0)4448 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Invocation,
4449 ArrayRef<const char *> CommandLineArgs,
4450 DiagnosticsEngine &Diags,
4451 const char *Argv0) {
4452 CompilerInvocation DummyInvocation;
4453
4454 return RoundTrip(
4455 [](CompilerInvocation &Invocation, ArrayRef<const char *> CommandLineArgs,
4456 DiagnosticsEngine &Diags, const char *Argv0) {
4457 return CreateFromArgsImpl(Invocation, CommandLineArgs, Diags, Argv0);
4458 },
4459 [](CompilerInvocation &Invocation, SmallVectorImpl<const char *> &Args,
4460 StringAllocator SA) { Invocation.generateCC1CommandLine(Args, SA); },
4461 Invocation, DummyInvocation, CommandLineArgs, Diags, Argv0);
4462 }
4463
getModuleHash() const4464 std::string CompilerInvocation::getModuleHash() const {
4465 // Note: For QoI reasons, the things we use as a hash here should all be
4466 // dumped via the -module-info flag.
4467 using llvm::hash_code;
4468 using llvm::hash_value;
4469 using llvm::hash_combine;
4470 using llvm::hash_combine_range;
4471
4472 // Start the signature with the compiler version.
4473 // FIXME: We'd rather use something more cryptographically sound than
4474 // CityHash, but this will do for now.
4475 hash_code code = hash_value(getClangFullRepositoryVersion());
4476
4477 // Also include the serialization version, in case LLVM_APPEND_VC_REV is off
4478 // and getClangFullRepositoryVersion() doesn't include git revision.
4479 code = hash_combine(code, serialization::VERSION_MAJOR,
4480 serialization::VERSION_MINOR);
4481
4482 // Extend the signature with the language options
4483 #define LANGOPT(Name, Bits, Default, Description) \
4484 code = hash_combine(code, LangOpts->Name);
4485 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
4486 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
4487 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
4488 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
4489 #include "clang/Basic/LangOptions.def"
4490
4491 for (StringRef Feature : LangOpts->ModuleFeatures)
4492 code = hash_combine(code, Feature);
4493
4494 code = hash_combine(code, LangOpts->ObjCRuntime);
4495 const auto &BCN = LangOpts->CommentOpts.BlockCommandNames;
4496 code = hash_combine(code, hash_combine_range(BCN.begin(), BCN.end()));
4497
4498 // Extend the signature with the target options.
4499 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
4500 TargetOpts->TuneCPU, TargetOpts->ABI);
4501 for (const auto &FeatureAsWritten : TargetOpts->FeaturesAsWritten)
4502 code = hash_combine(code, FeatureAsWritten);
4503
4504 // Extend the signature with preprocessor options.
4505 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
4506 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
4507 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
4508
4509 for (const auto &I : getPreprocessorOpts().Macros) {
4510 // If we're supposed to ignore this macro for the purposes of modules,
4511 // don't put it into the hash.
4512 if (!hsOpts.ModulesIgnoreMacros.empty()) {
4513 // Check whether we're ignoring this macro.
4514 StringRef MacroDef = I.first;
4515 if (hsOpts.ModulesIgnoreMacros.count(
4516 llvm::CachedHashString(MacroDef.split('=').first)))
4517 continue;
4518 }
4519
4520 code = hash_combine(code, I.first, I.second);
4521 }
4522
4523 // Extend the signature with the sysroot and other header search options.
4524 code = hash_combine(code, hsOpts.Sysroot,
4525 hsOpts.ModuleFormat,
4526 hsOpts.UseDebugInfo,
4527 hsOpts.UseBuiltinIncludes,
4528 hsOpts.UseStandardSystemIncludes,
4529 hsOpts.UseStandardCXXIncludes,
4530 hsOpts.UseLibcxx,
4531 hsOpts.ModulesValidateDiagnosticOptions);
4532 code = hash_combine(code, hsOpts.ResourceDir);
4533
4534 if (hsOpts.ModulesStrictContextHash) {
4535 hash_code SHPC = hash_combine_range(hsOpts.SystemHeaderPrefixes.begin(),
4536 hsOpts.SystemHeaderPrefixes.end());
4537 hash_code UEC = hash_combine_range(hsOpts.UserEntries.begin(),
4538 hsOpts.UserEntries.end());
4539 code = hash_combine(code, hsOpts.SystemHeaderPrefixes.size(), SHPC,
4540 hsOpts.UserEntries.size(), UEC);
4541
4542 const DiagnosticOptions &diagOpts = getDiagnosticOpts();
4543 #define DIAGOPT(Name, Bits, Default) \
4544 code = hash_combine(code, diagOpts.Name);
4545 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \
4546 code = hash_combine(code, diagOpts.get##Name());
4547 #include "clang/Basic/DiagnosticOptions.def"
4548 #undef DIAGOPT
4549 #undef ENUM_DIAGOPT
4550 }
4551
4552 // Extend the signature with the user build path.
4553 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
4554
4555 // Extend the signature with the module file extensions.
4556 const FrontendOptions &frontendOpts = getFrontendOpts();
4557 for (const auto &ext : frontendOpts.ModuleFileExtensions) {
4558 code = ext->hashExtension(code);
4559 }
4560
4561 // When compiling with -gmodules, also hash -fdebug-prefix-map as it
4562 // affects the debug info in the PCM.
4563 if (getCodeGenOpts().DebugTypeExtRefs)
4564 for (const auto &KeyValue : getCodeGenOpts().DebugPrefixMap)
4565 code = hash_combine(code, KeyValue.first, KeyValue.second);
4566
4567 // Extend the signature with the enabled sanitizers, if at least one is
4568 // enabled. Sanitizers which cannot affect AST generation aren't hashed.
4569 SanitizerSet SanHash = LangOpts->Sanitize;
4570 SanHash.clear(getPPTransparentSanitizers());
4571 if (!SanHash.empty())
4572 code = hash_combine(code, SanHash.Mask);
4573
4574 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
4575 }
4576
generateCC1CommandLine(SmallVectorImpl<const char * > & Args,StringAllocator SA) const4577 void CompilerInvocation::generateCC1CommandLine(
4578 SmallVectorImpl<const char *> &Args, StringAllocator SA) const {
4579 llvm::Triple T(TargetOpts->Triple);
4580
4581 GenerateFileSystemArgs(FileSystemOpts, Args, SA);
4582 GenerateMigratorArgs(MigratorOpts, Args, SA);
4583 GenerateAnalyzerArgs(*AnalyzerOpts, Args, SA);
4584 GenerateDiagnosticArgs(*DiagnosticOpts, Args, SA, false);
4585 GenerateFrontendArgs(FrontendOpts, Args, SA, LangOpts->IsHeaderFile);
4586 GenerateTargetArgs(*TargetOpts, Args, SA);
4587 GenerateHeaderSearchArgs(*HeaderSearchOpts, Args, SA);
4588 GenerateLangArgs(*LangOpts, Args, SA, T, FrontendOpts.DashX);
4589 GenerateCodeGenArgs(CodeGenOpts, Args, SA, T, FrontendOpts.OutputFile,
4590 &*LangOpts);
4591 GeneratePreprocessorArgs(*PreprocessorOpts, Args, SA, *LangOpts, FrontendOpts,
4592 CodeGenOpts);
4593 GeneratePreprocessorOutputArgs(PreprocessorOutputOpts, Args, SA,
4594 FrontendOpts.ProgramAction);
4595 GenerateDependencyOutputArgs(DependencyOutputOpts, Args, SA);
4596 }
4597
4598 IntrusiveRefCntPtr<llvm::vfs::FileSystem>
createVFSFromCompilerInvocation(const CompilerInvocation & CI,DiagnosticsEngine & Diags)4599 clang::createVFSFromCompilerInvocation(const CompilerInvocation &CI,
4600 DiagnosticsEngine &Diags) {
4601 return createVFSFromCompilerInvocation(CI, Diags,
4602 llvm::vfs::getRealFileSystem());
4603 }
4604
4605 IntrusiveRefCntPtr<llvm::vfs::FileSystem>
createVFSFromCompilerInvocation(const CompilerInvocation & CI,DiagnosticsEngine & Diags,IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS)4606 clang::createVFSFromCompilerInvocation(
4607 const CompilerInvocation &CI, DiagnosticsEngine &Diags,
4608 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) {
4609 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
4610 return BaseFS;
4611
4612 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS;
4613 // earlier vfs files are on the bottom
4614 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
4615 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
4616 Result->getBufferForFile(File);
4617 if (!Buffer) {
4618 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
4619 continue;
4620 }
4621
4622 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML(
4623 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File,
4624 /*DiagContext*/ nullptr, Result);
4625 if (!FS) {
4626 Diags.Report(diag::err_invalid_vfs_overlay) << File;
4627 continue;
4628 }
4629
4630 Result = FS;
4631 }
4632 return Result;
4633 }
4634