1 //===--- LLVM.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 #include "Arch/AArch64.h"
13 #include "Arch/Mips.h"
15 #include "Arch/Sparc.h"
16 #include "Arch/SystemZ.h"
18 #include "CommonArgs.h"
20 #include "InputInfo.h"
22 #include "clang/Basic/CharInfo.h"
23 #include "clang/Basic/LangOptions.h"
24 #include "clang/Basic/ObjCRuntime.h"
25 #include "clang/Basic/Version.h"
26 #include "clang/Config/config.h"
27 #include "clang/Driver/DriverDiagnostic.h"
28 #include "clang/Driver/Options.h"
29 #include "clang/Driver/SanitizerArgs.h"
30 #include "clang/Driver/XRayArgs.h"
31 #include "llvm/ADT/StringExtras.h"
32 #include "llvm/Option/ArgList.h"
33 #include "llvm/Support/CodeGen.h"
34 #include "llvm/Support/Compression.h"
35 #include "llvm/Support/FileSystem.h"
36 #include "llvm/Support/Path.h"
37 #include "llvm/Support/Process.h"
38 #include "llvm/Support/YAMLParser.h"
41 #include <unistd.h> // For getuid().
44 using namespace clang::driver;
45 using namespace clang::driver::tools;
46 using namespace clang;
47 using namespace llvm::opt;
49 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
51 Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
52 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
53 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
54 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
55 << A->getBaseArg().getAsString(Args)
56 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
61 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
62 // In gcc, only ARM checks this, but it seems reasonable to check universally.
63 if (Args.hasArg(options::OPT_static))
65 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
66 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
70 // Add backslashes to escape spaces and other backslashes.
71 // This is used for the space-separated argument list specified with
72 // the -dwarf-debug-flags option.
73 static void EscapeSpacesAndBackslashes(const char *Arg,
74 SmallVectorImpl<char> &Res) {
88 // Quote target names for inclusion in GNU Make dependency files.
89 // Only the characters '$', '#', ' ', '\t' are quoted.
90 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
91 for (unsigned i = 0, e = Target.size(); i != e; ++i) {
95 // Escape the preceding backslashes
96 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
99 // Escape the space/tab
112 Res.push_back(Target[i]);
116 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
117 /// offloading tool chain that is associated with the current action \a JA.
119 forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
120 const ToolChain &RegularToolChain,
121 llvm::function_ref<void(const ToolChain &)> Work) {
122 // Apply Work on the current/regular tool chain.
123 Work(RegularToolChain);
125 // Apply Work on all the offloading tool chains associated with the current
127 if (JA.isHostOffloading(Action::OFK_Cuda))
128 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
129 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
130 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
133 // TODO: Add support for other offloading programming models here.
137 /// This is a helper function for validating the optional refinement step
138 /// parameter in reciprocal argument strings. Return false if there is an error
139 /// parsing the refinement step. Otherwise, return true and set the Position
140 /// of the refinement step in the input string.
141 static bool getRefinementStep(StringRef In, const Driver &D,
142 const Arg &A, size_t &Position) {
143 const char RefinementStepToken = ':';
144 Position = In.find(RefinementStepToken);
145 if (Position != StringRef::npos) {
146 StringRef Option = A.getOption().getName();
147 StringRef RefStep = In.substr(Position + 1);
148 // Allow exactly one numeric character for the additional refinement
149 // step parameter. This is reasonable for all currently-supported
150 // operations and architectures because we would expect that a larger value
151 // of refinement steps would cause the estimate "optimization" to
152 // under-perform the native operation. Also, if the estimate does not
153 // converge quickly, it probably will not ever converge, so further
154 // refinement steps will not produce a better answer.
155 if (RefStep.size() != 1) {
156 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
159 char RefStepChar = RefStep[0];
160 if (RefStepChar < '0' || RefStepChar > '9') {
161 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
168 /// The -mrecip flag requires processing of many optional parameters.
169 static void ParseMRecip(const Driver &D, const ArgList &Args,
170 ArgStringList &OutStrings) {
171 StringRef DisabledPrefixIn = "!";
172 StringRef DisabledPrefixOut = "!";
173 StringRef EnabledPrefixOut = "";
174 StringRef Out = "-mrecip=";
176 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
180 unsigned NumOptions = A->getNumValues();
181 if (NumOptions == 0) {
182 // No option is the same as "all".
183 OutStrings.push_back(Args.MakeArgString(Out + "all"));
187 // Pass through "all", "none", or "default" with an optional refinement step.
188 if (NumOptions == 1) {
189 StringRef Val = A->getValue(0);
191 if (!getRefinementStep(Val, D, *A, RefStepLoc))
193 StringRef ValBase = Val.slice(0, RefStepLoc);
194 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
195 OutStrings.push_back(Args.MakeArgString(Out + Val));
200 // Each reciprocal type may be enabled or disabled individually.
201 // Check each input value for validity, concatenate them all back together,
204 llvm::StringMap<bool> OptionStrings;
205 OptionStrings.insert(std::make_pair("divd", false));
206 OptionStrings.insert(std::make_pair("divf", false));
207 OptionStrings.insert(std::make_pair("vec-divd", false));
208 OptionStrings.insert(std::make_pair("vec-divf", false));
209 OptionStrings.insert(std::make_pair("sqrtd", false));
210 OptionStrings.insert(std::make_pair("sqrtf", false));
211 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
212 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
214 for (unsigned i = 0; i != NumOptions; ++i) {
215 StringRef Val = A->getValue(i);
217 bool IsDisabled = Val.startswith(DisabledPrefixIn);
218 // Ignore the disablement token for string matching.
223 if (!getRefinementStep(Val, D, *A, RefStep))
226 StringRef ValBase = Val.slice(0, RefStep);
227 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
228 if (OptionIter == OptionStrings.end()) {
229 // Try again specifying float suffix.
230 OptionIter = OptionStrings.find(ValBase.str() + 'f');
231 if (OptionIter == OptionStrings.end()) {
232 // The input name did not match any known option string.
233 D.Diag(diag::err_drv_unknown_argument) << Val;
236 // The option was specified without a float or double suffix.
237 // Make sure that the double entry was not already specified.
238 // The float entry will be checked below.
239 if (OptionStrings[ValBase.str() + 'd']) {
240 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
245 if (OptionIter->second == true) {
246 // Duplicate option specified.
247 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
251 // Mark the matched option as found. Do not allow duplicate specifiers.
252 OptionIter->second = true;
254 // If the precision was not specified, also mark the double entry as found.
255 if (ValBase.back() != 'f' && ValBase.back() != 'd')
256 OptionStrings[ValBase.str() + 'd'] = true;
258 // Build the output string.
259 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
260 Out = Args.MakeArgString(Out + Prefix + Val);
261 if (i != NumOptions - 1)
262 Out = Args.MakeArgString(Out + ",");
265 OutStrings.push_back(Args.MakeArgString(Out));
268 static void getHexagonTargetFeatures(const ArgList &Args,
269 std::vector<StringRef> &Features) {
270 handleTargetFeaturesGroup(Args, Features,
271 options::OPT_m_hexagon_Features_Group);
273 bool UseLongCalls = false;
274 if (Arg *A = Args.getLastArg(options::OPT_mlong_calls,
275 options::OPT_mno_long_calls)) {
276 if (A->getOption().matches(options::OPT_mlong_calls))
280 Features.push_back(UseLongCalls ? "+long-calls" : "-long-calls");
283 static void getWebAssemblyTargetFeatures(const ArgList &Args,
284 std::vector<StringRef> &Features) {
285 handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
288 static void getAMDGPUTargetFeatures(const Driver &D, const ArgList &Args,
289 std::vector<StringRef> &Features) {
290 if (const Arg *dAbi = Args.getLastArg(options::OPT_mamdgpu_debugger_abi)) {
291 StringRef value = dAbi->getValue();
292 if (value == "1.0") {
293 Features.push_back("+amdgpu-debugger-insert-nops");
294 Features.push_back("+amdgpu-debugger-reserve-regs");
295 Features.push_back("+amdgpu-debugger-emit-prologue");
297 D.Diag(diag::err_drv_clang_unsupported) << dAbi->getAsString(Args);
301 handleTargetFeaturesGroup(
302 Args, Features, options::OPT_m_amdgpu_Features_Group);
305 static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
306 const ArgList &Args, ArgStringList &CmdArgs,
308 const Driver &D = TC.getDriver();
309 std::vector<StringRef> Features;
310 switch (Triple.getArch()) {
313 case llvm::Triple::mips:
314 case llvm::Triple::mipsel:
315 case llvm::Triple::mips64:
316 case llvm::Triple::mips64el:
317 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
320 case llvm::Triple::arm:
321 case llvm::Triple::armeb:
322 case llvm::Triple::thumb:
323 case llvm::Triple::thumbeb:
324 arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
327 case llvm::Triple::ppc:
328 case llvm::Triple::ppc64:
329 case llvm::Triple::ppc64le:
330 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
332 case llvm::Triple::systemz:
333 systemz::getSystemZTargetFeatures(Args, Features);
335 case llvm::Triple::aarch64:
336 case llvm::Triple::aarch64_be:
337 aarch64::getAArch64TargetFeatures(D, Args, Features);
339 case llvm::Triple::x86:
340 case llvm::Triple::x86_64:
341 x86::getX86TargetFeatures(D, Triple, Args, Features);
343 case llvm::Triple::hexagon:
344 getHexagonTargetFeatures(Args, Features);
346 case llvm::Triple::wasm32:
347 case llvm::Triple::wasm64:
348 getWebAssemblyTargetFeatures(Args, Features);
350 case llvm::Triple::sparc:
351 case llvm::Triple::sparcel:
352 case llvm::Triple::sparcv9:
353 sparc::getSparcTargetFeatures(D, Args, Features);
355 case llvm::Triple::r600:
356 case llvm::Triple::amdgcn:
357 getAMDGPUTargetFeatures(D, Args, Features);
361 // Find the last of each feature.
362 llvm::StringMap<unsigned> LastOpt;
363 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
364 StringRef Name = Features[I];
365 assert(Name[0] == '-' || Name[0] == '+');
366 LastOpt[Name.drop_front(1)] = I;
369 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
370 // If this feature was overridden, ignore it.
371 StringRef Name = Features[I];
372 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
373 assert(LastI != LastOpt.end());
374 unsigned Last = LastI->second;
378 CmdArgs.push_back("-target-feature");
379 CmdArgs.push_back(Name.data());
384 shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
385 const llvm::Triple &Triple) {
386 // We use the zero-cost exception tables for Objective-C if the non-fragile
387 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
389 if (runtime.isNonFragile())
392 if (!Triple.isMacOSX())
395 return (!Triple.isMacOSXVersionLT(10, 5) &&
396 (Triple.getArch() == llvm::Triple::x86_64 ||
397 Triple.getArch() == llvm::Triple::arm));
400 /// Adds exception related arguments to the driver command arguments. There's a
401 /// master flag, -fexceptions and also language specific flags to enable/disable
402 /// C++ and Objective-C exceptions. This makes it possible to for example
403 /// disable C++ exceptions but enable Objective-C exceptions.
404 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
405 const ToolChain &TC, bool KernelOrKext,
406 const ObjCRuntime &objcRuntime,
407 ArgStringList &CmdArgs) {
408 const Driver &D = TC.getDriver();
409 const llvm::Triple &Triple = TC.getTriple();
412 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
413 // arguments now to avoid warnings about unused arguments.
414 Args.ClaimAllArgs(options::OPT_fexceptions);
415 Args.ClaimAllArgs(options::OPT_fno_exceptions);
416 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
417 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
418 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
419 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
423 // See if the user explicitly enabled exceptions.
424 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
427 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
428 // is not necessarily sensible, but follows GCC.
429 if (types::isObjC(InputType) &&
430 Args.hasFlag(options::OPT_fobjc_exceptions,
431 options::OPT_fno_objc_exceptions, true)) {
432 CmdArgs.push_back("-fobjc-exceptions");
434 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
437 if (types::isCXX(InputType)) {
438 // Disable C++ EH by default on XCore and PS4.
439 bool CXXExceptionsEnabled =
440 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
441 Arg *ExceptionArg = Args.getLastArg(
442 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
443 options::OPT_fexceptions, options::OPT_fno_exceptions);
445 CXXExceptionsEnabled =
446 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
447 ExceptionArg->getOption().matches(options::OPT_fexceptions);
449 if (CXXExceptionsEnabled) {
450 if (Triple.isPS4CPU()) {
451 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
452 assert(ExceptionArg &&
453 "On the PS4 exceptions should only be enabled if passing "
455 if (RTTIMode == ToolChain::RM_DisabledExplicitly) {
456 const Arg *RTTIArg = TC.getRTTIArg();
457 assert(RTTIArg && "RTTI disabled explicitly but no RTTIArg!");
458 D.Diag(diag::err_drv_argument_not_allowed_with)
459 << RTTIArg->getAsString(Args) << ExceptionArg->getAsString(Args);
460 } else if (RTTIMode == ToolChain::RM_EnabledImplicitly)
461 D.Diag(diag::warn_drv_enabling_rtti_with_exceptions);
463 assert(TC.getRTTIMode() != ToolChain::RM_DisabledImplicitly);
465 CmdArgs.push_back("-fcxx-exceptions");
472 CmdArgs.push_back("-fexceptions");
475 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
477 if (TC.getTriple().isOSDarwin()) {
478 // The native darwin assembler doesn't support the linker_option directives,
479 // so we disable them if we think the .s file will be passed to it.
480 Default = TC.useIntegratedAs();
482 return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
486 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
487 const ToolChain &TC) {
488 bool UseDwarfDirectory =
489 Args.hasFlag(options::OPT_fdwarf_directory_asm,
490 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
491 return !UseDwarfDirectory;
494 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
495 // to the corresponding DebugInfoKind.
496 static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
497 assert(A.getOption().matches(options::OPT_gN_Group) &&
498 "Not a -g option that specifies a debug-info level");
499 if (A.getOption().matches(options::OPT_g0) ||
500 A.getOption().matches(options::OPT_ggdb0))
501 return codegenoptions::NoDebugInfo;
502 if (A.getOption().matches(options::OPT_gline_tables_only) ||
503 A.getOption().matches(options::OPT_ggdb1))
504 return codegenoptions::DebugLineTablesOnly;
505 return codegenoptions::LimitedDebugInfo;
508 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
509 switch (Triple.getArch()){
512 case llvm::Triple::arm:
513 case llvm::Triple::thumb:
514 // ARM Darwin targets require a frame pointer to be always present to aid
515 // offline debugging via backtraces.
516 return Triple.isOSDarwin();
520 static bool useFramePointerForTargetByDefault(const ArgList &Args,
521 const llvm::Triple &Triple) {
522 switch (Triple.getArch()) {
523 case llvm::Triple::xcore:
524 case llvm::Triple::wasm32:
525 case llvm::Triple::wasm64:
526 // XCore never wants frame pointers, regardless of OS.
527 // WebAssembly never wants frame pointers.
533 if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) {
534 switch (Triple.getArch()) {
535 // Don't use a frame pointer on linux if optimizing for certain targets.
536 case llvm::Triple::mips64:
537 case llvm::Triple::mips64el:
538 case llvm::Triple::mips:
539 case llvm::Triple::mipsel:
540 case llvm::Triple::ppc:
541 case llvm::Triple::ppc64:
542 case llvm::Triple::ppc64le:
543 case llvm::Triple::systemz:
544 case llvm::Triple::x86:
545 case llvm::Triple::x86_64:
546 return !areOptimizationsEnabled(Args);
552 if (Triple.isOSWindows()) {
553 switch (Triple.getArch()) {
554 case llvm::Triple::x86:
555 return !areOptimizationsEnabled(Args);
556 case llvm::Triple::x86_64:
557 return Triple.isOSBinFormatMachO();
558 case llvm::Triple::arm:
559 case llvm::Triple::thumb:
560 // Windows on ARM builds with FPO disabled to aid fast stack walking
563 // All other supported Windows ISAs use xdata unwind information, so frame
564 // pointers are not generally useful.
572 static bool shouldUseFramePointer(const ArgList &Args,
573 const llvm::Triple &Triple) {
574 if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
575 options::OPT_fomit_frame_pointer))
576 return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
577 mustUseNonLeafFramePointerForTarget(Triple);
579 if (Args.hasArg(options::OPT_pg))
582 return useFramePointerForTargetByDefault(Args, Triple);
585 static bool shouldUseLeafFramePointer(const ArgList &Args,
586 const llvm::Triple &Triple) {
587 if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
588 options::OPT_momit_leaf_frame_pointer))
589 return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
591 if (Args.hasArg(options::OPT_pg))
594 if (Triple.isPS4CPU())
597 return useFramePointerForTargetByDefault(Args, Triple);
600 /// Add a CC1 option to specify the debug compilation directory.
601 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
602 SmallString<128> cwd;
603 if (!llvm::sys::fs::current_path(cwd)) {
604 CmdArgs.push_back("-fdebug-compilation-dir");
605 CmdArgs.push_back(Args.MakeArgString(cwd));
609 /// \brief Vectorize at all optimization levels greater than 1 except for -Oz.
610 /// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
611 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
612 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
613 if (A->getOption().matches(options::OPT_O4) ||
614 A->getOption().matches(options::OPT_Ofast))
617 if (A->getOption().matches(options::OPT_O0))
620 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
623 StringRef S(A->getValue());
627 // Don't vectorize -Oz, unless it's the slp vectorizer.
631 unsigned OptLevel = 0;
632 if (S.getAsInteger(10, OptLevel))
641 /// Add -x lang to \p CmdArgs for \p Input.
642 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
643 ArgStringList &CmdArgs) {
644 // When using -verify-pch, we don't want to provide the type
645 // 'precompiled-header' if it was inferred from the file extension
646 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
649 CmdArgs.push_back("-x");
650 if (Args.hasArg(options::OPT_rewrite_objc))
651 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
653 // Map the driver type to the frontend type. This is mostly an identity
654 // mapping, except that the distinction between module interface units
655 // and other source files does not exist at the frontend layer.
656 const char *ClangType;
657 switch (Input.getType()) {
658 case types::TY_CXXModule:
661 case types::TY_PP_CXXModule:
662 ClangType = "c++-cpp-output";
665 ClangType = types::getTypeName(Input.getType());
668 CmdArgs.push_back(ClangType);
672 static void appendUserToPath(SmallVectorImpl<char> &Result) {
674 const char *Username = getenv("LOGNAME");
676 const char *Username = getenv("USERNAME");
679 // Validate that LoginName can be used in a path, and get its length.
681 for (const char *P = Username; *P; ++P, ++Len) {
682 if (!clang::isAlphanumeric(*P) && *P != '_') {
688 if (Username && Len > 0) {
689 Result.append(Username, Username + Len);
694 // Fallback to user id.
696 std::string UID = llvm::utostr(getuid());
698 // FIXME: Windows seems to have an 'SID' that might work.
699 std::string UID = "9999";
701 Result.append(UID.begin(), UID.end());
704 static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
705 const InputInfo &Output, const ArgList &Args,
706 ArgStringList &CmdArgs) {
708 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
709 options::OPT_fprofile_generate_EQ,
710 options::OPT_fno_profile_generate);
711 if (PGOGenerateArg &&
712 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
713 PGOGenerateArg = nullptr;
715 auto *ProfileGenerateArg = Args.getLastArg(
716 options::OPT_fprofile_instr_generate,
717 options::OPT_fprofile_instr_generate_EQ,
718 options::OPT_fno_profile_instr_generate);
719 if (ProfileGenerateArg &&
720 ProfileGenerateArg->getOption().matches(
721 options::OPT_fno_profile_instr_generate))
722 ProfileGenerateArg = nullptr;
724 if (PGOGenerateArg && ProfileGenerateArg)
725 D.Diag(diag::err_drv_argument_not_allowed_with)
726 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
728 auto *ProfileUseArg = getLastProfileUseArg(Args);
730 if (PGOGenerateArg && ProfileUseArg)
731 D.Diag(diag::err_drv_argument_not_allowed_with)
732 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
734 if (ProfileGenerateArg && ProfileUseArg)
735 D.Diag(diag::err_drv_argument_not_allowed_with)
736 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
738 if (ProfileGenerateArg) {
739 if (ProfileGenerateArg->getOption().matches(
740 options::OPT_fprofile_instr_generate_EQ))
741 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
742 ProfileGenerateArg->getValue()));
743 // The default is to use Clang Instrumentation.
744 CmdArgs.push_back("-fprofile-instrument=clang");
747 if (PGOGenerateArg) {
748 CmdArgs.push_back("-fprofile-instrument=llvm");
749 if (PGOGenerateArg->getOption().matches(
750 options::OPT_fprofile_generate_EQ)) {
751 SmallString<128> Path(PGOGenerateArg->getValue());
752 llvm::sys::path::append(Path, "default_%m.profraw");
754 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
759 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
760 CmdArgs.push_back(Args.MakeArgString(
761 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
762 else if ((ProfileUseArg->getOption().matches(
763 options::OPT_fprofile_use_EQ) ||
764 ProfileUseArg->getOption().matches(
765 options::OPT_fprofile_instr_use))) {
766 SmallString<128> Path(
767 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
768 if (Path.empty() || llvm::sys::fs::is_directory(Path))
769 llvm::sys::path::append(Path, "default.profdata");
771 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
775 if (Args.hasArg(options::OPT_ftest_coverage) ||
776 Args.hasArg(options::OPT_coverage))
777 CmdArgs.push_back("-femit-coverage-notes");
778 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
780 Args.hasArg(options::OPT_coverage))
781 CmdArgs.push_back("-femit-coverage-data");
783 if (Args.hasFlag(options::OPT_fcoverage_mapping,
784 options::OPT_fno_coverage_mapping, false) &&
786 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
787 << "-fcoverage-mapping"
788 << "-fprofile-instr-generate";
790 if (Args.hasFlag(options::OPT_fcoverage_mapping,
791 options::OPT_fno_coverage_mapping, false))
792 CmdArgs.push_back("-fcoverage-mapping");
794 if (C.getArgs().hasArg(options::OPT_c) ||
795 C.getArgs().hasArg(options::OPT_S)) {
796 if (Output.isFilename()) {
797 CmdArgs.push_back("-coverage-notes-file");
798 SmallString<128> OutputFilename;
799 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
800 OutputFilename = FinalOutput->getValue();
802 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
803 SmallString<128> CoverageFilename = OutputFilename;
804 if (llvm::sys::path::is_relative(CoverageFilename)) {
805 SmallString<128> Pwd;
806 if (!llvm::sys::fs::current_path(Pwd)) {
807 llvm::sys::path::append(Pwd, CoverageFilename);
808 CoverageFilename.swap(Pwd);
811 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
812 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
814 // Leave -fprofile-dir= an unused argument unless .gcda emission is
815 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
816 // the flag used. There is no -fno-profile-dir, so the user has no
817 // targeted way to suppress the warning.
818 if (Args.hasArg(options::OPT_fprofile_arcs) ||
819 Args.hasArg(options::OPT_coverage)) {
820 CmdArgs.push_back("-coverage-data-file");
821 if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
822 CoverageFilename = FProfileDir->getValue();
823 llvm::sys::path::append(CoverageFilename, OutputFilename);
825 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
826 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
832 /// \brief Check whether the given input tree contains any compilation actions.
833 static bool ContainsCompileAction(const Action *A) {
834 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
837 for (const auto &AI : A->inputs())
838 if (ContainsCompileAction(AI))
844 /// \brief Check if -relax-all should be passed to the internal assembler.
845 /// This is done by default when compiling non-assembler source with -O0.
846 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
847 bool RelaxDefault = true;
849 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
850 RelaxDefault = A->getOption().matches(options::OPT_O0);
853 RelaxDefault = false;
854 for (const auto &Act : C.getActions()) {
855 if (ContainsCompileAction(Act)) {
862 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
866 // Extract the integer N from a string spelled "-dwarf-N", returning 0
867 // on mismatch. The StringRef input (rather than an Arg) allows
868 // for use by the "-Xassembler" option parser.
869 static unsigned DwarfVersionNum(StringRef ArgValue) {
870 return llvm::StringSwitch<unsigned>(ArgValue)
871 .Case("-gdwarf-2", 2)
872 .Case("-gdwarf-3", 3)
873 .Case("-gdwarf-4", 4)
874 .Case("-gdwarf-5", 5)
878 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
879 codegenoptions::DebugInfoKind DebugInfoKind,
880 unsigned DwarfVersion,
881 llvm::DebuggerKind DebuggerTuning) {
882 switch (DebugInfoKind) {
883 case codegenoptions::DebugLineTablesOnly:
884 CmdArgs.push_back("-debug-info-kind=line-tables-only");
886 case codegenoptions::LimitedDebugInfo:
887 CmdArgs.push_back("-debug-info-kind=limited");
889 case codegenoptions::FullDebugInfo:
890 CmdArgs.push_back("-debug-info-kind=standalone");
895 if (DwarfVersion > 0)
897 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
898 switch (DebuggerTuning) {
899 case llvm::DebuggerKind::GDB:
900 CmdArgs.push_back("-debugger-tuning=gdb");
902 case llvm::DebuggerKind::LLDB:
903 CmdArgs.push_back("-debugger-tuning=lldb");
905 case llvm::DebuggerKind::SCE:
906 CmdArgs.push_back("-debugger-tuning=sce");
913 static const char *RelocationModelName(llvm::Reloc::Model Model) {
915 case llvm::Reloc::Static:
917 case llvm::Reloc::PIC_:
919 case llvm::Reloc::DynamicNoPIC:
920 return "dynamic-no-pic";
921 case llvm::Reloc::ROPI:
923 case llvm::Reloc::RWPI:
925 case llvm::Reloc::ROPI_RWPI:
928 llvm_unreachable("Unknown Reloc::Model kind");
931 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
932 const Driver &D, const ArgList &Args,
933 ArgStringList &CmdArgs,
934 const InputInfo &Output,
935 const InputInfoList &Inputs) const {
937 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
939 CheckPreprocessingOptions(D, Args);
941 Args.AddLastArg(CmdArgs, options::OPT_C);
942 Args.AddLastArg(CmdArgs, options::OPT_CC);
944 // Handle dependency file generation.
945 if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
946 (A = Args.getLastArg(options::OPT_MD)) ||
947 (A = Args.getLastArg(options::OPT_MMD))) {
948 // Determine the output location.
950 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
951 DepFile = MF->getValue();
952 C.addFailureResultFile(DepFile, &JA);
953 } else if (Output.getType() == types::TY_Dependencies) {
954 DepFile = Output.getFilename();
955 } else if (A->getOption().matches(options::OPT_M) ||
956 A->getOption().matches(options::OPT_MM)) {
959 DepFile = getDependencyFileName(Args, Inputs);
960 C.addFailureResultFile(DepFile, &JA);
962 CmdArgs.push_back("-dependency-file");
963 CmdArgs.push_back(DepFile);
965 // Add a default target if one wasn't specified.
966 if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
967 const char *DepTarget;
969 // If user provided -o, that is the dependency target, except
970 // when we are only generating a dependency file.
971 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
972 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
973 DepTarget = OutputOpt->getValue();
975 // Otherwise derive from the base input.
977 // FIXME: This should use the computed output file location.
978 SmallString<128> P(Inputs[0].getBaseInput());
979 llvm::sys::path::replace_extension(P, "o");
980 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
983 CmdArgs.push_back("-MT");
984 SmallString<128> Quoted;
985 QuoteTarget(DepTarget, Quoted);
986 CmdArgs.push_back(Args.MakeArgString(Quoted));
989 if (A->getOption().matches(options::OPT_M) ||
990 A->getOption().matches(options::OPT_MD))
991 CmdArgs.push_back("-sys-header-deps");
992 if ((isa<PrecompileJobAction>(JA) &&
993 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
994 Args.hasArg(options::OPT_fmodule_file_deps))
995 CmdArgs.push_back("-module-file-deps");
998 if (Args.hasArg(options::OPT_MG)) {
999 if (!A || A->getOption().matches(options::OPT_MD) ||
1000 A->getOption().matches(options::OPT_MMD))
1001 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1002 CmdArgs.push_back("-MG");
1005 Args.AddLastArg(CmdArgs, options::OPT_MP);
1006 Args.AddLastArg(CmdArgs, options::OPT_MV);
1008 // Convert all -MQ <target> args to -MT <quoted target>
1009 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1012 if (A->getOption().matches(options::OPT_MQ)) {
1013 CmdArgs.push_back("-MT");
1014 SmallString<128> Quoted;
1015 QuoteTarget(A->getValue(), Quoted);
1016 CmdArgs.push_back(Args.MakeArgString(Quoted));
1018 // -MT flag - no change
1020 A->render(Args, CmdArgs);
1024 // Add offload include arguments specific for CUDA. This must happen before
1025 // we -I or -include anything else, because we must pick up the CUDA headers
1026 // from the particular CUDA installation, rather than from e.g.
1027 // /usr/local/include.
1028 if (JA.isOffloading(Action::OFK_Cuda))
1029 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1031 // Add -i* options, and automatically translate to
1032 // -include-pch/-include-pth for transparent PCH support. It's
1033 // wonky, but we include looking for .gch so we can support seamless
1034 // replacement into a build system already set up to be generating
1036 int YcIndex = -1, YuIndex = -1;
1039 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1040 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1041 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1042 // Walk the whole i_Group and skip non "-include" flags so that the index
1043 // here matches the index in the next loop below.
1045 if (!A->getOption().matches(options::OPT_include))
1047 if (YcArg && strcmp(A->getValue(), YcArg->getValue()) == 0)
1049 if (YuArg && strcmp(A->getValue(), YuArg->getValue()) == 0)
1053 if (isa<PrecompileJobAction>(JA) && YcIndex != -1) {
1054 Driver::InputList Inputs;
1055 D.BuildInputs(getToolChain(), C.getArgs(), Inputs);
1056 assert(Inputs.size() == 1 && "Need one input when building pch");
1057 CmdArgs.push_back(Args.MakeArgString(Twine("-find-pch-source=") +
1058 Inputs[0].second->getValue()));
1061 bool RenderedImplicitInclude = false;
1063 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1066 if (getToolChain().getDriver().IsCLMode() &&
1067 A->getOption().matches(options::OPT_include)) {
1068 // In clang-cl mode, /Ycfoo.h means that all code up to a foo.h
1069 // include is compiled into foo.h, and everything after goes into
1070 // the .obj file. /Yufoo.h means that all includes prior to and including
1071 // foo.h are completely skipped and replaced with a use of the pch file
1072 // for foo.h. (Each flag can have at most one value, multiple /Yc flags
1073 // just mean that the last one wins.) If /Yc and /Yu are both present
1074 // and refer to the same file, /Yc wins.
1075 // Note that OPT__SLASH_FI gets mapped to OPT_include.
1076 // FIXME: The code here assumes that /Yc and /Yu refer to the same file.
1077 // cl.exe seems to support both flags with different values, but that
1078 // seems strange (which flag does /Fp now refer to?), so don't implement
1079 // that until someone needs it.
1080 int PchIndex = YcIndex != -1 ? YcIndex : YuIndex;
1081 if (PchIndex != -1) {
1082 if (isa<PrecompileJobAction>(JA)) {
1083 // When building the pch, skip all includes after the pch.
1084 assert(YcIndex != -1 && PchIndex == YcIndex);
1088 // When using the pch, skip all includes prior to the pch.
1089 if (AI < PchIndex) {
1093 if (AI == PchIndex) {
1095 CmdArgs.push_back("-include-pch");
1097 Args.MakeArgString(D.GetClPchPath(C, A->getValue())));
1102 } else if (A->getOption().matches(options::OPT_include)) {
1103 // Handling of gcc-style gch precompiled headers.
1104 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1105 RenderedImplicitInclude = true;
1107 // Use PCH if the user requested it.
1108 bool UsePCH = D.CCCUsePCH;
1110 bool FoundPTH = false;
1111 bool FoundPCH = false;
1112 SmallString<128> P(A->getValue());
1113 // We want the files to have a name like foo.h.pch. Add a dummy extension
1114 // so that replace_extension does the right thing.
1117 llvm::sys::path::replace_extension(P, "pch");
1118 if (llvm::sys::fs::exists(P))
1123 llvm::sys::path::replace_extension(P, "pth");
1124 if (llvm::sys::fs::exists(P))
1128 if (!FoundPCH && !FoundPTH) {
1129 llvm::sys::path::replace_extension(P, "gch");
1130 if (llvm::sys::fs::exists(P)) {
1136 if (FoundPCH || FoundPTH) {
1137 if (IsFirstImplicitInclude) {
1140 CmdArgs.push_back("-include-pch");
1142 CmdArgs.push_back("-include-pth");
1143 CmdArgs.push_back(Args.MakeArgString(P));
1146 // Ignore the PCH if not first on command line and emit warning.
1147 D.Diag(diag::warn_drv_pch_not_first_include) << P
1148 << A->getAsString(Args);
1151 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1152 // Handling of paths which must come late. These entries are handled by
1153 // the toolchain itself after the resource dir is inserted in the right
1155 // Do not claim the argument so that the use of the argument does not
1156 // silently go unnoticed on toolchains which do not honour the option.
1160 // Not translated, render as usual.
1162 A->render(Args, CmdArgs);
1165 Args.AddAllArgs(CmdArgs,
1166 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1167 options::OPT_F, options::OPT_index_header_map});
1169 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1171 // FIXME: There is a very unfortunate problem here, some troubled
1172 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1173 // really support that we would have to parse and then translate
1174 // those options. :(
1175 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1176 options::OPT_Xpreprocessor);
1178 // -I- is a deprecated GCC feature, reject it.
1179 if (Arg *A = Args.getLastArg(options::OPT_I_))
1180 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1182 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1183 // -isysroot to the CC1 invocation.
1184 StringRef sysroot = C.getSysRoot();
1185 if (sysroot != "") {
1186 if (!Args.hasArg(options::OPT_isysroot)) {
1187 CmdArgs.push_back("-isysroot");
1188 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1192 // Parse additional include paths from environment variables.
1193 // FIXME: We should probably sink the logic for handling these from the
1194 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1195 // CPATH - included following the user specified includes (but prior to
1196 // builtin and standard includes).
1197 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1198 // C_INCLUDE_PATH - system includes enabled when compiling C.
1199 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1200 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1201 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1202 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1203 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1204 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1205 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1207 // While adding the include arguments, we also attempt to retrieve the
1208 // arguments of related offloading toolchains or arguments that are specific
1209 // of an offloading programming model.
1211 // Add C++ include arguments, if needed.
1212 if (types::isCXX(Inputs[0].getType()))
1213 forAllAssociatedToolChains(C, JA, getToolChain(),
1214 [&Args, &CmdArgs](const ToolChain &TC) {
1215 TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1218 // Add system include arguments for all targets but IAMCU.
1220 forAllAssociatedToolChains(C, JA, getToolChain(),
1221 [&Args, &CmdArgs](const ToolChain &TC) {
1222 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1225 // For IAMCU add special include arguments.
1226 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1230 // FIXME: Move to target hook.
1231 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1232 switch (Triple.getArch()) {
1236 case llvm::Triple::aarch64:
1237 case llvm::Triple::aarch64_be:
1238 case llvm::Triple::arm:
1239 case llvm::Triple::armeb:
1240 case llvm::Triple::thumb:
1241 case llvm::Triple::thumbeb:
1242 if (Triple.isOSDarwin() || Triple.isOSWindows())
1246 case llvm::Triple::ppc:
1247 case llvm::Triple::ppc64:
1248 if (Triple.isOSDarwin())
1252 case llvm::Triple::hexagon:
1253 case llvm::Triple::ppc64le:
1254 case llvm::Triple::systemz:
1255 case llvm::Triple::xcore:
1260 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1261 switch (Triple.getArch()) {
1265 case llvm::Triple::xcore:
1266 case llvm::Triple::wasm32:
1267 case llvm::Triple::wasm64:
1272 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1273 ArgStringList &CmdArgs, bool KernelOrKext) const {
1274 // Select the ABI to use.
1275 // FIXME: Support -meabi.
1276 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1277 const char *ABIName = nullptr;
1278 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1279 ABIName = A->getValue();
1280 } else if (Triple.isOSBinFormatMachO()) {
1281 if (arm::useAAPCSForMachO(Triple)) {
1283 } else if (Triple.isWatchABI()) {
1284 ABIName = "aapcs16";
1286 ABIName = "apcs-gnu";
1288 } else if (Triple.isOSWindows()) {
1289 // FIXME: this is invalid for WindowsCE
1292 // Select the default based on the platform.
1293 switch (Triple.getEnvironment()) {
1294 case llvm::Triple::Android:
1295 case llvm::Triple::GNUEABI:
1296 case llvm::Triple::GNUEABIHF:
1297 case llvm::Triple::MuslEABI:
1298 case llvm::Triple::MuslEABIHF:
1299 ABIName = "aapcs-linux";
1301 case llvm::Triple::EABIHF:
1302 case llvm::Triple::EABI:
1306 if (Triple.getOS() == llvm::Triple::NetBSD)
1307 ABIName = "apcs-gnu";
1308 else if (Triple.getOS() == llvm::Triple::OpenBSD)
1309 ABIName = "aapcs-linux";
1315 CmdArgs.push_back("-target-abi");
1316 CmdArgs.push_back(ABIName);
1318 // Determine floating point ABI from the options & target defaults.
1319 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1320 if (ABI == arm::FloatABI::Soft) {
1321 // Floating point operations and argument passing are soft.
1322 // FIXME: This changes CPP defines, we need -target-soft-float.
1323 CmdArgs.push_back("-msoft-float");
1324 CmdArgs.push_back("-mfloat-abi");
1325 CmdArgs.push_back("soft");
1326 } else if (ABI == arm::FloatABI::SoftFP) {
1327 // Floating point operations are hard, but argument passing is soft.
1328 CmdArgs.push_back("-mfloat-abi");
1329 CmdArgs.push_back("soft");
1331 // Floating point operations and argument passing are hard.
1332 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1333 CmdArgs.push_back("-mfloat-abi");
1334 CmdArgs.push_back("hard");
1337 // Forward the -mglobal-merge option for explicit control over the pass.
1338 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1339 options::OPT_mno_global_merge)) {
1340 CmdArgs.push_back("-backend-option");
1341 if (A->getOption().matches(options::OPT_mno_global_merge))
1342 CmdArgs.push_back("-arm-global-merge=false");
1344 CmdArgs.push_back("-arm-global-merge=true");
1347 if (!Args.hasFlag(options::OPT_mimplicit_float,
1348 options::OPT_mno_implicit_float, true))
1349 CmdArgs.push_back("-no-implicit-float");
1352 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1353 ArgStringList &CmdArgs) const {
1354 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1356 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1357 Args.hasArg(options::OPT_mkernel) ||
1358 Args.hasArg(options::OPT_fapple_kext))
1359 CmdArgs.push_back("-disable-red-zone");
1361 if (!Args.hasFlag(options::OPT_mimplicit_float,
1362 options::OPT_mno_implicit_float, true))
1363 CmdArgs.push_back("-no-implicit-float");
1365 const char *ABIName = nullptr;
1366 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1367 ABIName = A->getValue();
1368 else if (Triple.isOSDarwin())
1369 ABIName = "darwinpcs";
1373 CmdArgs.push_back("-target-abi");
1374 CmdArgs.push_back(ABIName);
1376 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1377 options::OPT_mno_fix_cortex_a53_835769)) {
1378 CmdArgs.push_back("-backend-option");
1379 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1380 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1382 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1383 } else if (Triple.isAndroid()) {
1384 // Enabled A53 errata (835769) workaround by default on android
1385 CmdArgs.push_back("-backend-option");
1386 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1389 // Forward the -mglobal-merge option for explicit control over the pass.
1390 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1391 options::OPT_mno_global_merge)) {
1392 CmdArgs.push_back("-backend-option");
1393 if (A->getOption().matches(options::OPT_mno_global_merge))
1394 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1396 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1400 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1401 ArgStringList &CmdArgs) const {
1402 const Driver &D = getToolChain().getDriver();
1405 const llvm::Triple &Triple = getToolChain().getTriple();
1406 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1408 CmdArgs.push_back("-target-abi");
1409 CmdArgs.push_back(ABIName.data());
1411 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1412 if (ABI == mips::FloatABI::Soft) {
1413 // Floating point operations and argument passing are soft.
1414 CmdArgs.push_back("-msoft-float");
1415 CmdArgs.push_back("-mfloat-abi");
1416 CmdArgs.push_back("soft");
1418 // Floating point operations and argument passing are hard.
1419 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1420 CmdArgs.push_back("-mfloat-abi");
1421 CmdArgs.push_back("hard");
1424 if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1425 if (A->getOption().matches(options::OPT_mxgot)) {
1426 CmdArgs.push_back("-mllvm");
1427 CmdArgs.push_back("-mxgot");
1431 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1432 options::OPT_mno_ldc1_sdc1)) {
1433 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1434 CmdArgs.push_back("-mllvm");
1435 CmdArgs.push_back("-mno-ldc1-sdc1");
1439 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1440 options::OPT_mno_check_zero_division)) {
1441 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1442 CmdArgs.push_back("-mllvm");
1443 CmdArgs.push_back("-mno-check-zero-division");
1447 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1448 StringRef v = A->getValue();
1449 CmdArgs.push_back("-mllvm");
1450 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1454 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1455 StringRef Val = StringRef(A->getValue());
1456 if (mips::hasCompactBranches(CPUName)) {
1457 if (Val == "never" || Val == "always" || Val == "optimal") {
1458 CmdArgs.push_back("-mllvm");
1459 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1461 D.Diag(diag::err_drv_unsupported_option_argument)
1462 << A->getOption().getName() << Val;
1464 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1468 void Clang::AddPPCTargetArgs(const ArgList &Args,
1469 ArgStringList &CmdArgs) const {
1470 // Select the ABI to use.
1471 const char *ABIName = nullptr;
1472 if (getToolChain().getTriple().isOSLinux())
1473 switch (getToolChain().getArch()) {
1474 case llvm::Triple::ppc64: {
1475 // When targeting a processor that supports QPX, or if QPX is
1476 // specifically enabled, default to using the ABI that supports QPX (so
1477 // long as it is not specifically disabled).
1478 bool HasQPX = false;
1479 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1480 HasQPX = A->getValue() == StringRef("a2q");
1481 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1483 ABIName = "elfv1-qpx";
1490 case llvm::Triple::ppc64le:
1497 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1498 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1499 // the option if given as we don't have backend support for any targets
1500 // that don't use the altivec abi.
1501 if (StringRef(A->getValue()) != "altivec")
1502 ABIName = A->getValue();
1504 ppc::FloatABI FloatABI =
1505 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1507 if (FloatABI == ppc::FloatABI::Soft) {
1508 // Floating point operations and argument passing are soft.
1509 CmdArgs.push_back("-msoft-float");
1510 CmdArgs.push_back("-mfloat-abi");
1511 CmdArgs.push_back("soft");
1513 // Floating point operations and argument passing are hard.
1514 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1515 CmdArgs.push_back("-mfloat-abi");
1516 CmdArgs.push_back("hard");
1520 CmdArgs.push_back("-target-abi");
1521 CmdArgs.push_back(ABIName);
1525 void Clang::AddSparcTargetArgs(const ArgList &Args,
1526 ArgStringList &CmdArgs) const {
1527 sparc::FloatABI FloatABI =
1528 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1530 if (FloatABI == sparc::FloatABI::Soft) {
1531 // Floating point operations and argument passing are soft.
1532 CmdArgs.push_back("-msoft-float");
1533 CmdArgs.push_back("-mfloat-abi");
1534 CmdArgs.push_back("soft");
1536 // Floating point operations and argument passing are hard.
1537 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1538 CmdArgs.push_back("-mfloat-abi");
1539 CmdArgs.push_back("hard");
1543 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1544 ArgStringList &CmdArgs) const {
1545 if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1546 CmdArgs.push_back("-mbackchain");
1549 void Clang::AddX86TargetArgs(const ArgList &Args,
1550 ArgStringList &CmdArgs) const {
1551 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1552 Args.hasArg(options::OPT_mkernel) ||
1553 Args.hasArg(options::OPT_fapple_kext))
1554 CmdArgs.push_back("-disable-red-zone");
1556 // Default to avoid implicit floating-point for kernel/kext code, but allow
1557 // that to be overridden with -mno-soft-float.
1558 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1559 Args.hasArg(options::OPT_fapple_kext));
1560 if (Arg *A = Args.getLastArg(
1561 options::OPT_msoft_float, options::OPT_mno_soft_float,
1562 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1563 const Option &O = A->getOption();
1564 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1565 O.matches(options::OPT_msoft_float));
1567 if (NoImplicitFloat)
1568 CmdArgs.push_back("-no-implicit-float");
1570 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1571 StringRef Value = A->getValue();
1572 if (Value == "intel" || Value == "att") {
1573 CmdArgs.push_back("-mllvm");
1574 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1576 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1577 << A->getOption().getName() << Value;
1581 // Set flags to support MCU ABI.
1582 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1583 CmdArgs.push_back("-mfloat-abi");
1584 CmdArgs.push_back("soft");
1585 CmdArgs.push_back("-mstack-alignment=4");
1589 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1590 ArgStringList &CmdArgs) const {
1591 CmdArgs.push_back("-mqdsp6-compat");
1592 CmdArgs.push_back("-Wreturn-type");
1594 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
1595 std::string N = llvm::utostr(G.getValue());
1596 std::string Opt = std::string("-hexagon-small-data-threshold=") + N;
1597 CmdArgs.push_back("-mllvm");
1598 CmdArgs.push_back(Args.MakeArgString(Opt));
1601 if (!Args.hasArg(options::OPT_fno_short_enums))
1602 CmdArgs.push_back("-fshort-enums");
1603 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1604 CmdArgs.push_back("-mllvm");
1605 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1607 CmdArgs.push_back("-mllvm");
1608 CmdArgs.push_back("-machine-sink-split=0");
1611 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1612 ArgStringList &CmdArgs) const {
1613 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1614 StringRef CPUName = A->getValue();
1616 CmdArgs.push_back("-target-cpu");
1617 CmdArgs.push_back(Args.MakeArgString(CPUName));
1619 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1620 StringRef Value = A->getValue();
1621 // Only support mregparm=4 to support old usage. Report error for all other
1624 if (Value.getAsInteger(10, Mregparm)) {
1625 if (Mregparm != 4) {
1626 getToolChain().getDriver().Diag(
1627 diag::err_drv_unsupported_option_argument)
1628 << A->getOption().getName() << Value;
1634 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1635 ArgStringList &CmdArgs) const {
1636 // Default to "hidden" visibility.
1637 if (!Args.hasArg(options::OPT_fvisibility_EQ,
1638 options::OPT_fvisibility_ms_compat)) {
1639 CmdArgs.push_back("-fvisibility");
1640 CmdArgs.push_back("hidden");
1644 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1645 StringRef Target, const InputInfo &Output,
1646 const InputInfo &Input, const ArgList &Args) const {
1647 // If this is a dry run, do not create the compilation database file.
1648 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1651 using llvm::yaml::escape;
1652 const Driver &D = getToolChain().getDriver();
1654 if (!CompilationDatabase) {
1656 auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1658 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1662 CompilationDatabase = std::move(File);
1664 auto &CDB = *CompilationDatabase;
1665 SmallString<128> Buf;
1666 if (llvm::sys::fs::current_path(Buf))
1668 CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1669 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1670 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1671 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1673 Buf += types::getTypeName(Input.getType());
1674 CDB << ", \"" << escape(Buf) << "\"";
1675 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1678 CDB << ", \"" << escape(Buf) << "\"";
1680 CDB << ", \"" << escape(Input.getFilename()) << "\"";
1681 for (auto &A: Args) {
1682 auto &O = A->getOption();
1683 // Skip language selection, which is positional.
1684 if (O.getID() == options::OPT_x)
1686 // Skip writing dependency output and the compilation database itself.
1687 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1690 if (O.getKind() == Option::InputClass)
1692 // All other arguments are quoted and appended.
1694 A->render(Args, ASL);
1696 CDB << ", \"" << escape(it) << "\"";
1700 CDB << ", \"" << escape(Buf) << "\"]},\n";
1703 static void CollectArgsForIntegratedAssembler(Compilation &C,
1704 const ArgList &Args,
1705 ArgStringList &CmdArgs,
1707 if (UseRelaxAll(C, Args))
1708 CmdArgs.push_back("-mrelax-all");
1710 // Only default to -mincremental-linker-compatible if we think we are
1711 // targeting the MSVC linker.
1712 bool DefaultIncrementalLinkerCompatible =
1713 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1714 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1715 options::OPT_mno_incremental_linker_compatible,
1716 DefaultIncrementalLinkerCompatible))
1717 CmdArgs.push_back("-mincremental-linker-compatible");
1719 switch (C.getDefaultToolChain().getArch()) {
1720 case llvm::Triple::arm:
1721 case llvm::Triple::armeb:
1722 case llvm::Triple::thumb:
1723 case llvm::Triple::thumbeb:
1724 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
1725 StringRef Value = A->getValue();
1726 if (Value == "always" || Value == "never" || Value == "arm" ||
1728 CmdArgs.push_back("-mllvm");
1729 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
1731 D.Diag(diag::err_drv_unsupported_option_argument)
1732 << A->getOption().getName() << Value;
1740 // When passing -I arguments to the assembler we sometimes need to
1741 // unconditionally take the next argument. For example, when parsing
1742 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
1743 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
1744 // arg after parsing the '-I' arg.
1745 bool TakeNextArg = false;
1747 // When using an integrated assembler, translate -Wa, and -Xassembler
1749 bool CompressDebugSections = false;
1751 bool UseRelaxRelocations = ENABLE_X86_RELAX_RELOCATIONS;
1752 const char *MipsTargetFeature = nullptr;
1754 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
1757 for (StringRef Value : A->getValues()) {
1759 CmdArgs.push_back(Value.data());
1760 TakeNextArg = false;
1764 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
1765 Value == "-mbig-obj")
1766 continue; // LLVM handles bigobj automatically
1768 switch (C.getDefaultToolChain().getArch()) {
1771 case llvm::Triple::mips:
1772 case llvm::Triple::mipsel:
1773 case llvm::Triple::mips64:
1774 case llvm::Triple::mips64el:
1775 if (Value == "--trap") {
1776 CmdArgs.push_back("-target-feature");
1777 CmdArgs.push_back("+use-tcc-in-div");
1780 if (Value == "--break") {
1781 CmdArgs.push_back("-target-feature");
1782 CmdArgs.push_back("-use-tcc-in-div");
1785 if (Value.startswith("-msoft-float")) {
1786 CmdArgs.push_back("-target-feature");
1787 CmdArgs.push_back("+soft-float");
1790 if (Value.startswith("-mhard-float")) {
1791 CmdArgs.push_back("-target-feature");
1792 CmdArgs.push_back("-soft-float");
1796 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
1797 .Case("-mips1", "+mips1")
1798 .Case("-mips2", "+mips2")
1799 .Case("-mips3", "+mips3")
1800 .Case("-mips4", "+mips4")
1801 .Case("-mips5", "+mips5")
1802 .Case("-mips32", "+mips32")
1803 .Case("-mips32r2", "+mips32r2")
1804 .Case("-mips32r3", "+mips32r3")
1805 .Case("-mips32r5", "+mips32r5")
1806 .Case("-mips32r6", "+mips32r6")
1807 .Case("-mips64", "+mips64")
1808 .Case("-mips64r2", "+mips64r2")
1809 .Case("-mips64r3", "+mips64r3")
1810 .Case("-mips64r5", "+mips64r5")
1811 .Case("-mips64r6", "+mips64r6")
1813 if (MipsTargetFeature)
1817 if (Value == "-force_cpusubtype_ALL") {
1818 // Do nothing, this is the default and we don't support anything else.
1819 } else if (Value == "-L") {
1820 CmdArgs.push_back("-msave-temp-labels");
1821 } else if (Value == "--fatal-warnings") {
1822 CmdArgs.push_back("-massembler-fatal-warnings");
1823 } else if (Value == "--noexecstack") {
1824 CmdArgs.push_back("-mnoexecstack");
1825 } else if (Value == "-compress-debug-sections" ||
1826 Value == "--compress-debug-sections") {
1827 CompressDebugSections = true;
1828 } else if (Value == "-nocompress-debug-sections" ||
1829 Value == "--nocompress-debug-sections") {
1830 CompressDebugSections = false;
1831 } else if (Value == "-mrelax-relocations=yes" ||
1832 Value == "--mrelax-relocations=yes") {
1833 UseRelaxRelocations = true;
1834 } else if (Value == "-mrelax-relocations=no" ||
1835 Value == "--mrelax-relocations=no") {
1836 UseRelaxRelocations = false;
1837 } else if (Value.startswith("-I")) {
1838 CmdArgs.push_back(Value.data());
1839 // We need to consume the next argument if the current arg is a plain
1840 // -I. The next arg will be the include directory.
1843 } else if (Value.startswith("-gdwarf-")) {
1844 // "-gdwarf-N" options are not cc1as options.
1845 unsigned DwarfVersion = DwarfVersionNum(Value);
1846 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
1847 CmdArgs.push_back(Value.data());
1849 RenderDebugEnablingArgs(Args, CmdArgs,
1850 codegenoptions::LimitedDebugInfo,
1851 DwarfVersion, llvm::DebuggerKind::Default);
1853 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
1854 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
1855 // Do nothing, we'll validate it later.
1856 } else if (Value == "-defsym") {
1857 if (A->getNumValues() != 2) {
1858 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
1861 const char *S = A->getValue(1);
1862 auto Pair = StringRef(S).split('=');
1863 auto Sym = Pair.first;
1864 auto SVal = Pair.second;
1866 if (Sym.empty() || SVal.empty()) {
1867 D.Diag(diag::err_drv_defsym_invalid_format) << S;
1871 if (SVal.getAsInteger(0, IVal)) {
1872 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
1875 CmdArgs.push_back(Value.data());
1878 D.Diag(diag::err_drv_unsupported_option_argument)
1879 << A->getOption().getName() << Value;
1883 if (CompressDebugSections) {
1884 if (llvm::zlib::isAvailable())
1885 CmdArgs.push_back("-compress-debug-sections");
1887 D.Diag(diag::warn_debug_compression_unavailable);
1889 if (UseRelaxRelocations)
1890 CmdArgs.push_back("--mrelax-relocations");
1891 if (MipsTargetFeature != nullptr) {
1892 CmdArgs.push_back("-target-feature");
1893 CmdArgs.push_back(MipsTargetFeature);
1897 void Clang::ConstructJob(Compilation &C, const JobAction &JA,
1898 const InputInfo &Output, const InputInfoList &Inputs,
1899 const ArgList &Args, const char *LinkingOutput) const {
1900 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1901 const std::string &TripleStr = Triple.getTriple();
1904 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
1905 const Driver &D = getToolChain().getDriver();
1906 ArgStringList CmdArgs;
1908 // Check number of inputs for sanity. We need at least one input.
1909 assert(Inputs.size() >= 1 && "Must have at least one input.");
1910 const InputInfo &Input = Inputs[0];
1911 // CUDA compilation may have multiple inputs (source file + results of
1912 // device-side compilations). OpenMP device jobs also take the host IR as a
1913 // second input. All other jobs are expected to have exactly one
1915 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
1916 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
1917 assert((IsCuda || (IsOpenMPDevice && Inputs.size() == 2) ||
1918 Inputs.size() == 1) &&
1919 "Unable to handle multiple inputs.");
1921 bool IsWindowsGNU = getToolChain().getTriple().isWindowsGNUEnvironment();
1922 bool IsWindowsCygnus =
1923 getToolChain().getTriple().isWindowsCygwinEnvironment();
1924 bool IsWindowsMSVC = getToolChain().getTriple().isWindowsMSVCEnvironment();
1925 bool IsPS4CPU = getToolChain().getTriple().isPS4CPU();
1926 bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
1928 // Adjust IsWindowsXYZ for CUDA compilations. Even when compiling in device
1929 // mode (i.e., getToolchain().getTriple() is NVPTX, not Windows), we need to
1930 // pass Windows-specific flags to cc1.
1932 const llvm::Triple *AuxTriple = getToolChain().getAuxTriple();
1933 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
1934 IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
1935 IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
1938 // C++ is not supported for IAMCU.
1939 if (IsIAMCU && types::isCXX(Input.getType()))
1940 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
1942 // Invoke ourselves in -cc1 mode.
1944 // FIXME: Implement custom jobs for internal actions.
1945 CmdArgs.push_back("-cc1");
1947 // Add the "effective" target triple.
1948 CmdArgs.push_back("-triple");
1949 CmdArgs.push_back(Args.MakeArgString(TripleStr));
1951 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
1952 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
1953 Args.ClaimAllArgs(options::OPT_MJ);
1957 // We have to pass the triple of the host if compiling for a CUDA device and
1959 std::string NormalizedTriple;
1960 if (JA.isDeviceOffloading(Action::OFK_Cuda))
1961 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
1965 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Cuda>()
1969 CmdArgs.push_back("-aux-triple");
1970 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
1973 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
1974 Triple.getArch() == llvm::Triple::thumb)) {
1975 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
1977 Triple.getArchName().substr(Offset).getAsInteger(10, Version);
1979 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
1983 // Push all default warning arguments that are specific to
1984 // the given target. These come before user provided warning options
1986 getToolChain().addClangWarningOptions(CmdArgs);
1988 // Select the appropriate action.
1989 RewriteKind rewriteKind = RK_None;
1991 if (isa<AnalyzeJobAction>(JA)) {
1992 assert(JA.getType() == types::TY_Plist && "Invalid output type.");
1993 CmdArgs.push_back("-analyze");
1994 } else if (isa<MigrateJobAction>(JA)) {
1995 CmdArgs.push_back("-migrate");
1996 } else if (isa<PreprocessJobAction>(JA)) {
1997 if (Output.getType() == types::TY_Dependencies)
1998 CmdArgs.push_back("-Eonly");
2000 CmdArgs.push_back("-E");
2001 if (Args.hasArg(options::OPT_rewrite_objc) &&
2002 !Args.hasArg(options::OPT_g_Group))
2003 CmdArgs.push_back("-P");
2005 } else if (isa<AssembleJobAction>(JA)) {
2006 CmdArgs.push_back("-emit-obj");
2008 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
2010 // Also ignore explicit -force_cpusubtype_ALL option.
2011 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
2012 } else if (isa<PrecompileJobAction>(JA)) {
2013 // Use PCH if the user requested it.
2014 bool UsePCH = D.CCCUsePCH;
2016 if (JA.getType() == types::TY_Nothing)
2017 CmdArgs.push_back("-fsyntax-only");
2018 else if (JA.getType() == types::TY_ModuleFile)
2019 CmdArgs.push_back("-emit-module-interface");
2021 CmdArgs.push_back("-emit-pch");
2023 CmdArgs.push_back("-emit-pth");
2024 } else if (isa<VerifyPCHJobAction>(JA)) {
2025 CmdArgs.push_back("-verify-pch");
2027 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
2028 "Invalid action for clang tool.");
2029 if (JA.getType() == types::TY_Nothing) {
2030 CmdArgs.push_back("-fsyntax-only");
2031 } else if (JA.getType() == types::TY_LLVM_IR ||
2032 JA.getType() == types::TY_LTO_IR) {
2033 CmdArgs.push_back("-emit-llvm");
2034 } else if (JA.getType() == types::TY_LLVM_BC ||
2035 JA.getType() == types::TY_LTO_BC) {
2036 CmdArgs.push_back("-emit-llvm-bc");
2037 } else if (JA.getType() == types::TY_PP_Asm) {
2038 CmdArgs.push_back("-S");
2039 } else if (JA.getType() == types::TY_AST) {
2040 CmdArgs.push_back("-emit-pch");
2041 } else if (JA.getType() == types::TY_ModuleFile) {
2042 CmdArgs.push_back("-module-file-info");
2043 } else if (JA.getType() == types::TY_RewrittenObjC) {
2044 CmdArgs.push_back("-rewrite-objc");
2045 rewriteKind = RK_NonFragile;
2046 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
2047 CmdArgs.push_back("-rewrite-objc");
2048 rewriteKind = RK_Fragile;
2050 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
2053 // Preserve use-list order by default when emitting bitcode, so that
2054 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
2055 // same result as running passes here. For LTO, we don't need to preserve
2056 // the use-list order, since serialization to bitcode is part of the flow.
2057 if (JA.getType() == types::TY_LLVM_BC)
2058 CmdArgs.push_back("-emit-llvm-uselists");
2060 if (D.isUsingLTO()) {
2061 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
2063 // The Darwin linker currently uses the legacy LTO API, which does not
2064 // support LTO unit features (CFI, whole program vtable opt) under
2066 if (!getToolChain().getTriple().isOSDarwin() ||
2067 D.getLTOMode() == LTOK_Full)
2068 CmdArgs.push_back("-flto-unit");
2072 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
2073 if (!types::isLLVMIR(Input.getType()))
2074 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
2076 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
2079 // Embed-bitcode option.
2080 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
2081 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
2082 // Add flags implied by -fembed-bitcode.
2083 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2084 // Disable all llvm IR level optimizations.
2085 CmdArgs.push_back("-disable-llvm-passes");
2087 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
2088 CmdArgs.push_back("-fembed-bitcode=marker");
2090 // We normally speed up the clang process a bit by skipping destructors at
2091 // exit, but when we're generating diagnostics we can rely on some of the
2093 if (!C.isForDiagnostics())
2094 CmdArgs.push_back("-disable-free");
2096 // Disable the verification pass in -asserts builds.
2098 CmdArgs.push_back("-disable-llvm-verifier");
2099 // Discard LLVM value names in -asserts builds.
2100 CmdArgs.push_back("-discard-value-names");
2103 // Set the main file name, so that debug info works even with
2105 CmdArgs.push_back("-main-file-name");
2106 CmdArgs.push_back(getBaseInputName(Args, Input));
2108 // Some flags which affect the language (via preprocessor
2110 if (Args.hasArg(options::OPT_static))
2111 CmdArgs.push_back("-static-define");
2113 if (isa<AnalyzeJobAction>(JA)) {
2114 // Enable region store model by default.
2115 CmdArgs.push_back("-analyzer-store=region");
2117 // Treat blocks as analysis entry points.
2118 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2120 CmdArgs.push_back("-analyzer-eagerly-assume");
2122 // Add default argument set.
2123 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2124 CmdArgs.push_back("-analyzer-checker=core");
2125 CmdArgs.push_back("-analyzer-checker=apiModeling");
2127 if (!IsWindowsMSVC) {
2128 CmdArgs.push_back("-analyzer-checker=unix");
2130 // Enable "unix" checkers that also work on Windows.
2131 CmdArgs.push_back("-analyzer-checker=unix.API");
2132 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2133 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2134 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2135 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2136 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2139 // Disable some unix checkers for PS4.
2141 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2142 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2145 if (getToolChain().getTriple().getVendor() == llvm::Triple::Apple)
2146 CmdArgs.push_back("-analyzer-checker=osx");
2148 CmdArgs.push_back("-analyzer-checker=deadcode");
2150 if (types::isCXX(Input.getType()))
2151 CmdArgs.push_back("-analyzer-checker=cplusplus");
2155 "-analyzer-checker=security.insecureAPI.UncheckedReturn");
2156 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2157 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2158 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2159 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2160 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2163 // Default nullability checks.
2164 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2166 "-analyzer-checker=nullability.NullReturnedFromNonnull");
2169 // Set the output format. The default is plist, for (lame) historical
2171 CmdArgs.push_back("-analyzer-output");
2172 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2173 CmdArgs.push_back(A->getValue());
2175 CmdArgs.push_back("plist");
2177 // Disable the presentation of standard compiler warnings when
2178 // using --analyze. We only want to show static analyzer diagnostics
2179 // or frontend errors.
2180 CmdArgs.push_back("-w");
2182 // Add -Xanalyzer arguments when running as analyzer.
2183 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2186 CheckCodeGenerationOptions(D, Args);
2188 llvm::Reloc::Model RelocationModel;
2191 std::tie(RelocationModel, PICLevel, IsPIE) =
2192 ParsePICArgs(getToolChain(), Args);
2194 const char *RMName = RelocationModelName(RelocationModel);
2196 if ((RelocationModel == llvm::Reloc::ROPI ||
2197 RelocationModel == llvm::Reloc::ROPI_RWPI) &&
2198 types::isCXX(Input.getType()) &&
2199 !Args.hasArg(options::OPT_fallow_unsupported))
2200 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
2203 CmdArgs.push_back("-mrelocation-model");
2204 CmdArgs.push_back(RMName);
2207 CmdArgs.push_back("-pic-level");
2208 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
2210 CmdArgs.push_back("-pic-is-pie");
2213 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
2214 CmdArgs.push_back("-meabi");
2215 CmdArgs.push_back(A->getValue());
2218 CmdArgs.push_back("-mthread-model");
2219 if (Arg *A = Args.getLastArg(options::OPT_mthread_model))
2220 CmdArgs.push_back(A->getValue());
2222 CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel()));
2224 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
2226 if (!Args.hasFlag(options::OPT_fmerge_all_constants,
2227 options::OPT_fno_merge_all_constants))
2228 CmdArgs.push_back("-fno-merge-all-constants");
2230 // LLVM Code Generator Options.
2232 if (Args.hasArg(options::OPT_frewrite_map_file) ||
2233 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
2234 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
2235 options::OPT_frewrite_map_file_EQ)) {
2236 StringRef Map = A->getValue();
2237 if (!llvm::sys::fs::exists(Map)) {
2238 D.Diag(diag::err_drv_no_such_file) << Map;
2240 CmdArgs.push_back("-frewrite-map-file");
2241 CmdArgs.push_back(A->getValue());
2247 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
2248 StringRef v = A->getValue();
2249 CmdArgs.push_back("-mllvm");
2250 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
2254 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
2256 CmdArgs.push_back("-fno-jump-tables");
2258 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
2259 options::OPT_fno_preserve_as_comments, true))
2260 CmdArgs.push_back("-fno-preserve-as-comments");
2262 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
2263 CmdArgs.push_back("-mregparm");
2264 CmdArgs.push_back(A->getValue());
2267 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
2268 options::OPT_freg_struct_return)) {
2269 if (getToolChain().getArch() != llvm::Triple::x86) {
2270 D.Diag(diag::err_drv_unsupported_opt_for_target)
2271 << A->getSpelling() << getToolChain().getTriple().str();
2272 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
2273 CmdArgs.push_back("-fpcc-struct-return");
2275 assert(A->getOption().matches(options::OPT_freg_struct_return));
2276 CmdArgs.push_back("-freg-struct-return");
2280 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
2281 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
2283 if (shouldUseFramePointer(Args, getToolChain().getTriple()))
2284 CmdArgs.push_back("-mdisable-fp-elim");
2285 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
2286 options::OPT_fno_zero_initialized_in_bss))
2287 CmdArgs.push_back("-mno-zero-initialized-in-bss");
2289 bool OFastEnabled = isOptimizationLevelFast(Args);
2290 // If -Ofast is the optimization level, then -fstrict-aliasing should be
2291 // enabled. This alias option is being used to simplify the hasFlag logic.
2292 OptSpecifier StrictAliasingAliasOption =
2293 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
2294 // We turn strict aliasing off by default if we're in CL mode, since MSVC
2295 // doesn't do any TBAA.
2296 bool TBAAOnByDefault = !getToolChain().getDriver().IsCLMode();
2297 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
2298 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
2299 CmdArgs.push_back("-relaxed-aliasing");
2300 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
2301 options::OPT_fno_struct_path_tbaa))
2302 CmdArgs.push_back("-no-struct-path-tbaa");
2303 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
2305 CmdArgs.push_back("-fstrict-enums");
2306 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
2308 CmdArgs.push_back("-fno-strict-return");
2309 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
2310 options::OPT_fno_allow_editor_placeholders, false))
2311 CmdArgs.push_back("-fallow-editor-placeholders");
2312 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
2313 options::OPT_fno_strict_vtable_pointers,
2315 CmdArgs.push_back("-fstrict-vtable-pointers");
2316 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
2317 options::OPT_fno_optimize_sibling_calls))
2318 CmdArgs.push_back("-mdisable-tail-calls");
2320 // Handle segmented stacks.
2321 if (Args.hasArg(options::OPT_fsplit_stack))
2322 CmdArgs.push_back("-split-stacks");
2324 // Handle various floating point optimization flags, mapping them to the
2325 // appropriate LLVM code generation flags. This is complicated by several
2326 // "umbrella" flags, so we do this by stepping through the flags incrementally
2327 // adjusting what we think is enabled/disabled, then at the end settting the
2328 // LLVM flags based on the final state.
2329 bool HonorInfs = true;
2330 bool HonorNans = true;
2331 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2332 bool MathErrno = getToolChain().IsMathErrnoDefault();
2333 bool AssociativeMath = false;
2334 bool ReciprocalMath = false;
2335 bool SignedZeros = true;
2336 bool TrappingMath = true;
2337 StringRef DenormalFpMath = "";
2338 StringRef FpContract = "";
2340 for (Arg *A : Args) {
2341 switch (A->getOption().getID()) {
2342 // If this isn't an FP option skip the claim below
2346 // Options controlling individual features
2347 case options::OPT_fhonor_infinities: HonorInfs = true; break;
2348 case options::OPT_fno_honor_infinities: HonorInfs = false; break;
2349 case options::OPT_fhonor_nans: HonorNans = true; break;
2350 case options::OPT_fno_honor_nans: HonorNans = false; break;
2351 case options::OPT_fmath_errno: MathErrno = true; break;
2352 case options::OPT_fno_math_errno: MathErrno = false; break;
2353 case options::OPT_fassociative_math: AssociativeMath = true; break;
2354 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2355 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2356 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2357 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2358 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2359 case options::OPT_ftrapping_math: TrappingMath = true; break;
2360 case options::OPT_fno_trapping_math: TrappingMath = false; break;
2362 case options::OPT_fdenormal_fp_math_EQ:
2363 DenormalFpMath = A->getValue();
2366 // Validate and pass through -fp-contract option.
2367 case options::OPT_ffp_contract: {
2368 StringRef Val = A->getValue();
2369 if (Val == "fast" || Val == "on" || Val == "off") {
2372 D.Diag(diag::err_drv_unsupported_option_argument)
2373 << A->getOption().getName() << Val;
2378 case options::OPT_ffinite_math_only:
2382 case options::OPT_fno_finite_math_only:
2387 case options::OPT_funsafe_math_optimizations:
2388 AssociativeMath = true;
2389 ReciprocalMath = true;
2390 SignedZeros = false;
2391 TrappingMath = false;
2393 case options::OPT_fno_unsafe_math_optimizations:
2394 AssociativeMath = false;
2395 ReciprocalMath = false;
2397 TrappingMath = true;
2398 // -fno_unsafe_math_optimizations restores default denormal handling
2399 DenormalFpMath = "";
2402 case options::OPT_Ofast:
2403 // If -Ofast is the optimization level, then -ffast-math should be enabled
2407 case options::OPT_ffast_math:
2411 AssociativeMath = true;
2412 ReciprocalMath = true;
2413 SignedZeros = false;
2414 TrappingMath = false;
2415 // If fast-math is set then set the fp-contract mode to fast.
2416 FpContract = "fast";
2418 case options::OPT_fno_fast_math:
2421 // Turning on -ffast-math (with either flag) removes the need for
2422 // MathErrno. However, turning *off* -ffast-math merely restores the
2423 // toolchain default (which may be false).
2424 MathErrno = getToolChain().IsMathErrnoDefault();
2425 AssociativeMath = false;
2426 ReciprocalMath = false;
2428 TrappingMath = true;
2429 // -fno_fast_math restores default denormal and fpcontract handling
2430 DenormalFpMath = "";
2434 // If we handled this option claim it
2439 CmdArgs.push_back("-menable-no-infs");
2442 CmdArgs.push_back("-menable-no-nans");
2445 CmdArgs.push_back("-fmath-errno");
2447 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2449 CmdArgs.push_back("-menable-unsafe-fp-math");
2452 CmdArgs.push_back("-fno-signed-zeros");
2455 CmdArgs.push_back("-freciprocal-math");
2458 CmdArgs.push_back("-fno-trapping-math");
2460 if (!DenormalFpMath.empty())
2461 CmdArgs.push_back(Args.MakeArgString("-fdenormal-fp-math="+DenormalFpMath));
2463 if (!FpContract.empty())
2464 CmdArgs.push_back(Args.MakeArgString("-ffp-contract="+FpContract));
2466 ParseMRecip(getToolChain().getDriver(), Args, CmdArgs);
2468 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2469 // individual features enabled by -ffast-math instead of the option itself as
2470 // that's consistent with gcc's behaviour.
2471 if (!HonorInfs && !HonorNans && !MathErrno && AssociativeMath &&
2472 ReciprocalMath && !SignedZeros && !TrappingMath)
2473 CmdArgs.push_back("-ffast-math");
2475 // Handle __FINITE_MATH_ONLY__ similarly.
2476 if (!HonorInfs && !HonorNans)
2477 CmdArgs.push_back("-ffinite-math-only");
2479 // Decide whether to use verbose asm. Verbose assembly is the default on
2480 // toolchains which have the integrated assembler on by default.
2481 bool IsIntegratedAssemblerDefault =
2482 getToolChain().IsIntegratedAssemblerDefault();
2483 if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
2484 IsIntegratedAssemblerDefault) ||
2485 Args.hasArg(options::OPT_dA))
2486 CmdArgs.push_back("-masm-verbose");
2488 if (!Args.hasFlag(options::OPT_fintegrated_as, options::OPT_fno_integrated_as,
2489 IsIntegratedAssemblerDefault))
2490 CmdArgs.push_back("-no-integrated-as");
2492 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
2493 CmdArgs.push_back("-mdebug-pass");
2494 CmdArgs.push_back("Structure");
2496 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
2497 CmdArgs.push_back("-mdebug-pass");
2498 CmdArgs.push_back("Arguments");
2501 // Enable -mconstructor-aliases except on darwin, where we have to work around
2502 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
2503 // aliases aren't supported.
2504 if (!getToolChain().getTriple().isOSDarwin() &&
2505 !getToolChain().getTriple().isNVPTX())
2506 CmdArgs.push_back("-mconstructor-aliases");
2508 // Darwin's kernel doesn't support guard variables; just die if we
2510 if (KernelOrKext && getToolChain().getTriple().isOSDarwin())
2511 CmdArgs.push_back("-fforbid-guard-variables");
2513 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
2515 CmdArgs.push_back("-mms-bitfields");
2518 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
2519 options::OPT_mno_pie_copy_relocations,
2521 CmdArgs.push_back("-mpie-copy-relocations");
2524 // This is a coarse approximation of what llvm-gcc actually does, both
2525 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
2526 // complicated ways.
2527 bool AsynchronousUnwindTables =
2528 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
2529 options::OPT_fno_asynchronous_unwind_tables,
2530 (getToolChain().IsUnwindTablesDefault() ||
2531 getToolChain().getSanitizerArgs().needsUnwindTables()) &&
2533 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
2534 AsynchronousUnwindTables))
2535 CmdArgs.push_back("-munwind-tables");
2537 getToolChain().addClangTargetOptions(Args, CmdArgs);
2539 if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2540 CmdArgs.push_back("-mlimit-float-precision");
2541 CmdArgs.push_back(A->getValue());
2544 // FIXME: Handle -mtune=.
2545 (void)Args.hasArg(options::OPT_mtune_EQ);
2547 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
2548 CmdArgs.push_back("-mcode-model");
2549 CmdArgs.push_back(A->getValue());
2552 // Add the target cpu
2553 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
2555 CmdArgs.push_back("-target-cpu");
2556 CmdArgs.push_back(Args.MakeArgString(CPU));
2559 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2560 CmdArgs.push_back("-mfpmath");
2561 CmdArgs.push_back(A->getValue());
2564 // Add the target features
2565 getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, false);
2567 // Add target specific flags.
2568 switch (getToolChain().getArch()) {
2572 case llvm::Triple::arm:
2573 case llvm::Triple::armeb:
2574 case llvm::Triple::thumb:
2575 case llvm::Triple::thumbeb:
2576 // Use the effective triple, which takes into account the deployment target.
2577 AddARMTargetArgs(Triple, Args, CmdArgs, KernelOrKext);
2580 case llvm::Triple::aarch64:
2581 case llvm::Triple::aarch64_be:
2582 AddAArch64TargetArgs(Args, CmdArgs);
2585 case llvm::Triple::mips:
2586 case llvm::Triple::mipsel:
2587 case llvm::Triple::mips64:
2588 case llvm::Triple::mips64el:
2589 AddMIPSTargetArgs(Args, CmdArgs);
2592 case llvm::Triple::ppc:
2593 case llvm::Triple::ppc64:
2594 case llvm::Triple::ppc64le:
2595 AddPPCTargetArgs(Args, CmdArgs);
2598 case llvm::Triple::sparc:
2599 case llvm::Triple::sparcel:
2600 case llvm::Triple::sparcv9:
2601 AddSparcTargetArgs(Args, CmdArgs);
2604 case llvm::Triple::systemz:
2605 AddSystemZTargetArgs(Args, CmdArgs);
2608 case llvm::Triple::x86:
2609 case llvm::Triple::x86_64:
2610 AddX86TargetArgs(Args, CmdArgs);
2613 case llvm::Triple::lanai:
2614 AddLanaiTargetArgs(Args, CmdArgs);
2617 case llvm::Triple::hexagon:
2618 AddHexagonTargetArgs(Args, CmdArgs);
2621 case llvm::Triple::wasm32:
2622 case llvm::Triple::wasm64:
2623 AddWebAssemblyTargetArgs(Args, CmdArgs);
2627 // The 'g' groups options involve a somewhat intricate sequence of decisions
2628 // about what to pass from the driver to the frontend, but by the time they
2629 // reach cc1 they've been factored into three well-defined orthogonal choices:
2630 // * what level of debug info to generate
2631 // * what dwarf version to write
2632 // * what debugger tuning to use
2633 // This avoids having to monkey around further in cc1 other than to disable
2634 // codeview if not running in a Windows environment. Perhaps even that
2635 // decision should be made in the driver as well though.
2636 unsigned DwarfVersion = 0;
2637 llvm::DebuggerKind DebuggerTuning = getToolChain().getDefaultDebuggerTuning();
2638 // These two are potentially updated by AddClangCLArgs.
2639 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
2640 bool EmitCodeView = false;
2642 // Add clang-cl arguments.
2643 types::ID InputType = Input.getType();
2644 if (getToolChain().getDriver().IsCLMode())
2645 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
2647 // Pass the linker version in use.
2648 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
2649 CmdArgs.push_back("-target-linker-version");
2650 CmdArgs.push_back(A->getValue());
2653 if (!shouldUseLeafFramePointer(Args, getToolChain().getTriple()))
2654 CmdArgs.push_back("-momit-leaf-frame-pointer");
2656 // Explicitly error on some things we know we don't support and can't just
2658 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
2660 if (types::isCXX(InputType) && getToolChain().getTriple().isOSDarwin() &&
2661 getToolChain().getArch() == llvm::Triple::x86) {
2662 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
2663 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
2664 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
2665 << Unsupported->getOption().getName();
2667 // The faltivec option has been superseded by the maltivec option.
2668 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
2669 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
2670 << Unsupported->getOption().getName()
2671 << "please use -maltivec and include altivec.h explicitly";
2672 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
2673 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
2674 << Unsupported->getOption().getName() << "please use -mno-altivec";
2677 Args.AddAllArgs(CmdArgs, options::OPT_v);
2678 Args.AddLastArg(CmdArgs, options::OPT_H);
2679 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
2680 CmdArgs.push_back("-header-include-file");
2681 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
2684 Args.AddLastArg(CmdArgs, options::OPT_P);
2685 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
2687 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
2688 CmdArgs.push_back("-diagnostic-log-file");
2689 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
2693 bool splitDwarfInlining =
2694 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
2695 options::OPT_fno_split_dwarf_inlining, true);
2697 Args.ClaimAllArgs(options::OPT_g_Group);
2698 Arg *SplitDwarfArg = Args.getLastArg(options::OPT_gsplit_dwarf);
2699 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
2700 // If the last option explicitly specified a debug-info level, use it.
2701 if (A->getOption().matches(options::OPT_gN_Group)) {
2702 DebugInfoKind = DebugLevelToInfoKind(*A);
2703 // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
2704 // But -gsplit-dwarf is not a g_group option, hence we have to check the
2705 // order explicitly. (If -gsplit-dwarf wins, we fix DebugInfoKind later.)
2706 // This gets a bit more complicated if you've disabled inline info in the
2707 // skeleton CUs (splitDwarfInlining) - then there's value in composing
2708 // split-dwarf and line-tables-only, so let those compose naturally in
2710 // And if you just turned off debug info, (-gsplit-dwarf -g0) - do that.
2711 if (SplitDwarfArg) {
2712 if (A->getIndex() > SplitDwarfArg->getIndex()) {
2713 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
2714 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
2715 splitDwarfInlining))
2716 SplitDwarfArg = nullptr;
2717 } else if (splitDwarfInlining)
2718 DebugInfoKind = codegenoptions::NoDebugInfo;
2721 // For any other 'g' option, use Limited.
2722 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2725 // If a debugger tuning argument appeared, remember it.
2726 if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
2727 options::OPT_ggdbN_Group)) {
2728 if (A->getOption().matches(options::OPT_glldb))
2729 DebuggerTuning = llvm::DebuggerKind::LLDB;
2730 else if (A->getOption().matches(options::OPT_gsce))
2731 DebuggerTuning = llvm::DebuggerKind::SCE;
2733 DebuggerTuning = llvm::DebuggerKind::GDB;
2736 // If a -gdwarf argument appeared, remember it.
2737 if (Arg *A = Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
2738 options::OPT_gdwarf_4, options::OPT_gdwarf_5))
2739 DwarfVersion = DwarfVersionNum(A->getSpelling());
2741 // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
2742 // argument parsing.
2743 if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) {
2744 // DwarfVersion remains at 0 if no explicit choice was made.
2745 CmdArgs.push_back("-gcodeview");
2746 } else if (DwarfVersion == 0 &&
2747 DebugInfoKind != codegenoptions::NoDebugInfo) {
2748 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
2751 // We ignore flag -gstrict-dwarf for now.
2752 // And we handle flag -grecord-gcc-switches later with DwarfDebugFlags.
2753 Args.ClaimAllArgs(options::OPT_g_flags_Group);
2755 // Column info is included by default for everything except PS4 and CodeView.
2756 // Clang doesn't track end columns, just starting columns, which, in theory,
2757 // is fine for CodeView (and PDB). In practice, however, the Microsoft
2758 // debuggers don't handle missing end columns well, so it's better not to
2759 // include any column info.
2760 if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
2761 /*Default=*/ !IsPS4CPU && !(IsWindowsMSVC && EmitCodeView)))
2762 CmdArgs.push_back("-dwarf-column-info");
2764 // FIXME: Move backend command line options to the module.
2765 // If -gline-tables-only is the last option it wins.
2766 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
2767 Args.hasArg(options::OPT_gmodules)) {
2768 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2769 CmdArgs.push_back("-dwarf-ext-refs");
2770 CmdArgs.push_back("-fmodule-format=obj");
2773 // -gsplit-dwarf should turn on -g and enable the backend dwarf
2774 // splitting and extraction.
2775 // FIXME: Currently only works on Linux.
2776 if (getToolChain().getTriple().isOSLinux() && SplitDwarfArg) {
2777 if (!splitDwarfInlining)
2778 CmdArgs.push_back("-fno-split-dwarf-inlining");
2779 if (DebugInfoKind == codegenoptions::NoDebugInfo)
2780 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2781 CmdArgs.push_back("-backend-option");
2782 CmdArgs.push_back("-split-dwarf=Enable");
2785 // After we've dealt with all combinations of things that could
2786 // make DebugInfoKind be other than None or DebugLineTablesOnly,
2787 // figure out if we need to "upgrade" it to standalone debug info.
2788 // We parse these two '-f' options whether or not they will be used,
2789 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
2790 bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
2791 options::OPT_fno_standalone_debug,
2792 getToolChain().GetDefaultStandaloneDebug());
2793 if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
2794 DebugInfoKind = codegenoptions::FullDebugInfo;
2795 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
2798 // -fdebug-macro turns on macro debug info generation.
2799 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
2801 CmdArgs.push_back("-debug-info-macro");
2803 // -ggnu-pubnames turns on gnu style pubnames in the backend.
2804 if (Args.hasArg(options::OPT_ggnu_pubnames)) {
2805 CmdArgs.push_back("-backend-option");
2806 CmdArgs.push_back("-generate-gnu-dwarf-pub-sections");
2809 // -gdwarf-aranges turns on the emission of the aranges section in the
2811 // Always enabled on the PS4.
2812 if (Args.hasArg(options::OPT_gdwarf_aranges) || IsPS4CPU) {
2813 CmdArgs.push_back("-backend-option");
2814 CmdArgs.push_back("-generate-arange-section");
2817 if (Args.hasFlag(options::OPT_fdebug_types_section,
2818 options::OPT_fno_debug_types_section, false)) {
2819 CmdArgs.push_back("-backend-option");
2820 CmdArgs.push_back("-generate-type-units");
2823 bool UseSeparateSections = isUseSeparateSections(Triple);
2825 if (Args.hasFlag(options::OPT_ffunction_sections,
2826 options::OPT_fno_function_sections, UseSeparateSections)) {
2827 CmdArgs.push_back("-ffunction-sections");
2830 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
2831 UseSeparateSections)) {
2832 CmdArgs.push_back("-fdata-sections");
2835 if (!Args.hasFlag(options::OPT_funique_section_names,
2836 options::OPT_fno_unique_section_names, true))
2837 CmdArgs.push_back("-fno-unique-section-names");
2839 Args.AddAllArgs(CmdArgs, options::OPT_finstrument_functions);
2841 addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
2843 // Add runtime flag for PS4 when PGO or Coverage are enabled.
2844 if (getToolChain().getTriple().isPS4CPU())
2845 PS4cpu::addProfileRTArgs(getToolChain(), Args, CmdArgs);
2847 // Pass options for controlling the default header search paths.
2848 if (Args.hasArg(options::OPT_nostdinc)) {
2849 CmdArgs.push_back("-nostdsysteminc");
2850 CmdArgs.push_back("-nobuiltininc");
2852 if (Args.hasArg(options::OPT_nostdlibinc))
2853 CmdArgs.push_back("-nostdsysteminc");
2854 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
2855 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
2858 // Pass the path to compiler resource files.
2859 CmdArgs.push_back("-resource-dir");
2860 CmdArgs.push_back(D.ResourceDir.c_str());
2862 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
2864 bool ARCMTEnabled = false;
2865 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2866 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2867 options::OPT_ccc_arcmt_modify,
2868 options::OPT_ccc_arcmt_migrate)) {
2869 ARCMTEnabled = true;
2870 switch (A->getOption().getID()) {
2872 llvm_unreachable("missed a case");
2873 case options::OPT_ccc_arcmt_check:
2874 CmdArgs.push_back("-arcmt-check");
2876 case options::OPT_ccc_arcmt_modify:
2877 CmdArgs.push_back("-arcmt-modify");
2879 case options::OPT_ccc_arcmt_migrate:
2880 CmdArgs.push_back("-arcmt-migrate");
2881 CmdArgs.push_back("-mt-migrate-directory");
2882 CmdArgs.push_back(A->getValue());
2884 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2885 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2890 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2891 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2892 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2895 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2897 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
2898 << "-ccc-arcmt-migrate";
2900 CmdArgs.push_back("-mt-migrate-directory");
2901 CmdArgs.push_back(A->getValue());
2903 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2904 options::OPT_objcmt_migrate_subscripting,
2905 options::OPT_objcmt_migrate_property)) {
2906 // None specified, means enable them all.
2907 CmdArgs.push_back("-objcmt-migrate-literals");
2908 CmdArgs.push_back("-objcmt-migrate-subscripting");
2909 CmdArgs.push_back("-objcmt-migrate-property");
2911 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2912 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2913 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2916 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2917 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2918 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2919 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2920 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2921 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2922 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2923 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2924 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2925 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2926 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2927 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2928 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2929 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2930 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2931 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2934 // Add preprocessing options like -I, -D, etc. if we are using the
2937 // FIXME: Support -fpreprocessed
2938 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
2939 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
2941 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
2942 // that "The compiler can only warn and ignore the option if not recognized".
2943 // When building with ccache, it will pass -D options to clang even on
2944 // preprocessed inputs and configure concludes that -fPIC is not supported.
2945 Args.ClaimAllArgs(options::OPT_D);
2947 // Manually translate -O4 to -O3; let clang reject others.
2948 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
2949 if (A->getOption().matches(options::OPT_O4)) {
2950 CmdArgs.push_back("-O3");
2951 D.Diag(diag::warn_O4_is_O3);
2953 A->render(Args, CmdArgs);
2957 // Warn about ignored options to clang.
2959 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
2960 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
2964 claimNoWarnArgs(Args);
2966 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
2968 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
2969 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
2970 CmdArgs.push_back("-pedantic");
2971 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
2972 Args.AddLastArg(CmdArgs, options::OPT_w);
2974 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
2975 // (-ansi is equivalent to -std=c89 or -std=c++98).
2977 // If a std is supplied, only add -trigraphs if it follows the
2979 bool ImplyVCPPCXXVer = false;
2980 if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
2981 if (Std->getOption().matches(options::OPT_ansi))
2982 if (types::isCXX(InputType))
2983 CmdArgs.push_back("-std=c++98");
2985 CmdArgs.push_back("-std=c89");
2987 Std->render(Args, CmdArgs);
2989 // If -f(no-)trigraphs appears after the language standard flag, honor it.
2990 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
2991 options::OPT_ftrigraphs,
2992 options::OPT_fno_trigraphs))
2994 A->render(Args, CmdArgs);
2996 // Honor -std-default.
2998 // FIXME: Clang doesn't correctly handle -std= when the input language
2999 // doesn't match. For the time being just ignore this for C++ inputs;
3000 // eventually we want to do all the standard defaulting here instead of
3001 // splitting it between the driver and clang -cc1.
3002 if (!types::isCXX(InputType))
3003 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
3005 else if (IsWindowsMSVC)
3006 ImplyVCPPCXXVer = true;
3008 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
3009 options::OPT_fno_trigraphs);
3012 // GCC's behavior for -Wwrite-strings is a bit strange:
3013 // * In C, this "warning flag" changes the types of string literals from
3014 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
3015 // for the discarded qualifier.
3016 // * In C++, this is just a normal warning flag.
3018 // Implementing this warning correctly in C is hard, so we follow GCC's
3019 // behavior for now. FIXME: Directly diagnose uses of a string literal as
3020 // a non-const char* in C, rather than using this crude hack.
3021 if (!types::isCXX(InputType)) {
3022 // FIXME: This should behave just like a warning flag, and thus should also
3023 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
3025 Args.getLastArg(options::OPT_Wwrite_strings,
3026 options::OPT_Wno_write_strings, options::OPT_w);
3028 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
3029 CmdArgs.push_back("-fconst-strings");
3032 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
3033 // during C++ compilation, which it is by default. GCC keeps this define even
3034 // in the presence of '-w', match this behavior bug-for-bug.
3035 if (types::isCXX(InputType) &&
3036 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
3038 CmdArgs.push_back("-fdeprecated-macro");
3041 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
3042 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
3043 if (Asm->getOption().matches(options::OPT_fasm))
3044 CmdArgs.push_back("-fgnu-keywords");
3046 CmdArgs.push_back("-fno-gnu-keywords");
3049 if (ShouldDisableDwarfDirectory(Args, getToolChain()))
3050 CmdArgs.push_back("-fno-dwarf-directory-asm");
3052 if (ShouldDisableAutolink(Args, getToolChain()))
3053 CmdArgs.push_back("-fno-autolink");
3055 // Add in -fdebug-compilation-dir if necessary.
3056 addDebugCompDirArg(Args, CmdArgs);
3058 for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
3059 StringRef Map = A->getValue();
3060 if (Map.find('=') == StringRef::npos)
3061 D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
3063 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
3067 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
3068 options::OPT_ftemplate_depth_EQ)) {
3069 CmdArgs.push_back("-ftemplate-depth");
3070 CmdArgs.push_back(A->getValue());
3073 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
3074 CmdArgs.push_back("-foperator-arrow-depth");
3075 CmdArgs.push_back(A->getValue());
3078 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
3079 CmdArgs.push_back("-fconstexpr-depth");
3080 CmdArgs.push_back(A->getValue());
3083 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
3084 CmdArgs.push_back("-fconstexpr-steps");
3085 CmdArgs.push_back(A->getValue());
3088 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
3089 CmdArgs.push_back("-fbracket-depth");
3090 CmdArgs.push_back(A->getValue());
3093 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
3094 options::OPT_Wlarge_by_value_copy_def)) {
3095 if (A->getNumValues()) {
3096 StringRef bytes = A->getValue();
3097 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
3099 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
3102 if (Args.hasArg(options::OPT_relocatable_pch))
3103 CmdArgs.push_back("-relocatable-pch");
3105 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
3106 CmdArgs.push_back("-fconstant-string-class");
3107 CmdArgs.push_back(A->getValue());
3110 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
3111 CmdArgs.push_back("-ftabstop");
3112 CmdArgs.push_back(A->getValue());
3115 CmdArgs.push_back("-ferror-limit");
3116 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
3117 CmdArgs.push_back(A->getValue());
3119 CmdArgs.push_back("19");
3121 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
3122 CmdArgs.push_back("-fmacro-backtrace-limit");
3123 CmdArgs.push_back(A->getValue());
3126 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
3127 CmdArgs.push_back("-ftemplate-backtrace-limit");
3128 CmdArgs.push_back(A->getValue());
3131 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
3132 CmdArgs.push_back("-fconstexpr-backtrace-limit");
3133 CmdArgs.push_back(A->getValue());
3136 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
3137 CmdArgs.push_back("-fspell-checking-limit");
3138 CmdArgs.push_back(A->getValue());
3141 // Pass -fmessage-length=.
3142 CmdArgs.push_back("-fmessage-length");
3143 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
3144 CmdArgs.push_back(A->getValue());
3146 // If -fmessage-length=N was not specified, determine whether this is a
3147 // terminal and, if so, implicitly define -fmessage-length appropriately.
3148 unsigned N = llvm::sys::Process::StandardErrColumns();
3149 CmdArgs.push_back(Args.MakeArgString(Twine(N)));
3152 // -fvisibility= and -fvisibility-ms-compat are of a piece.
3153 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
3154 options::OPT_fvisibility_ms_compat)) {
3155 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
3156 CmdArgs.push_back("-fvisibility");
3157 CmdArgs.push_back(A->getValue());
3159 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
3160 CmdArgs.push_back("-fvisibility");
3161 CmdArgs.push_back("hidden");
3162 CmdArgs.push_back("-ftype-visibility");
3163 CmdArgs.push_back("default");
3167 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
3169 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
3171 // -fhosted is default.
3172 bool IsHosted = true;
3173 if (Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3175 CmdArgs.push_back("-ffreestanding");
3179 // Forward -f (flag) options which we can pass directly.
3180 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
3181 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
3182 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
3183 // Emulated TLS is enabled by default on Android, and can be enabled manually
3184 // with -femulated-tls.
3185 bool EmulatedTLSDefault = Triple.isAndroid() || Triple.isWindowsCygwinEnvironment();
3186 if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
3187 EmulatedTLSDefault))
3188 CmdArgs.push_back("-femulated-tls");
3189 // AltiVec-like language extensions aren't relevant for assembling.
3190 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
3191 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
3193 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
3194 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
3196 // Forward flags for OpenMP. We don't do this if the current action is an
3197 // device offloading action other than OpenMP.
3198 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
3199 options::OPT_fno_openmp, false) &&
3200 (JA.isDeviceOffloading(Action::OFK_None) ||
3201 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
3202 switch (getToolChain().getDriver().getOpenMPRuntime(Args)) {
3203 case Driver::OMPRT_OMP:
3204 case Driver::OMPRT_IOMP5:
3205 // Clang can generate useful OpenMP code for these two runtime libraries.
3206 CmdArgs.push_back("-fopenmp");
3208 // If no option regarding the use of TLS in OpenMP codegeneration is
3209 // given, decide a default based on the target. Otherwise rely on the
3210 // options and pass the right information to the frontend.
3211 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
3212 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
3213 CmdArgs.push_back("-fnoopenmp-use-tls");
3214 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3217 // By default, if Clang doesn't know how to generate useful OpenMP code
3218 // for a specific runtime library, we just don't pass the '-fopenmp' flag
3219 // down to the actual compilation.
3220 // FIXME: It would be better to have a mode which *only* omits IR
3221 // generation based on the OpenMP support so that we get consistent
3222 // semantic analysis, etc.
3227 const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs();
3228 Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType);
3230 const XRayArgs &XRay = getToolChain().getXRayArgs();
3231 XRay.addArgs(getToolChain(), Args, CmdArgs, InputType);
3233 if (getToolChain().SupportsProfiling())
3234 Args.AddLastArg(CmdArgs, options::OPT_pg);
3236 if (getToolChain().SupportsProfiling())
3237 Args.AddLastArg(CmdArgs, options::OPT_mfentry);
3239 // -flax-vector-conversions is default.
3240 if (!Args.hasFlag(options::OPT_flax_vector_conversions,
3241 options::OPT_fno_lax_vector_conversions))
3242 CmdArgs.push_back("-fno-lax-vector-conversions");
3244 if (Args.getLastArg(options::OPT_fapple_kext) ||
3245 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
3246 CmdArgs.push_back("-fapple-kext");
3248 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
3249 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
3250 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
3251 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
3252 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
3254 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
3255 CmdArgs.push_back("-ftrapv-handler");
3256 CmdArgs.push_back(A->getValue());
3259 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
3261 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
3262 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
3263 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
3264 if (A->getOption().matches(options::OPT_fwrapv))
3265 CmdArgs.push_back("-fwrapv");
3266 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
3267 options::OPT_fno_strict_overflow)) {
3268 if (A->getOption().matches(options::OPT_fno_strict_overflow))
3269 CmdArgs.push_back("-fwrapv");
3272 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
3273 options::OPT_fno_reroll_loops))
3274 if (A->getOption().matches(options::OPT_freroll_loops))
3275 CmdArgs.push_back("-freroll-loops");
3277 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
3278 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
3279 options::OPT_fno_unroll_loops);
3281 Args.AddLastArg(CmdArgs, options::OPT_pthread);
3283 // -stack-protector=0 is default.
3284 unsigned StackProtectorLevel = 0;
3285 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
3286 // doesn't even have a stack!
3287 if (!Triple.isNVPTX()) {
3288 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
3289 options::OPT_fstack_protector_all,
3290 options::OPT_fstack_protector_strong,
3291 options::OPT_fstack_protector)) {
3292 if (A->getOption().matches(options::OPT_fstack_protector)) {
3293 StackProtectorLevel = std::max<unsigned>(
3295 getToolChain().GetDefaultStackProtectorLevel(KernelOrKext));
3296 } else if (A->getOption().matches(options::OPT_fstack_protector_strong))
3297 StackProtectorLevel = LangOptions::SSPStrong;
3298 else if (A->getOption().matches(options::OPT_fstack_protector_all))
3299 StackProtectorLevel = LangOptions::SSPReq;
3301 StackProtectorLevel =
3302 getToolChain().GetDefaultStackProtectorLevel(KernelOrKext);
3303 // Only use a default stack protector on Darwin in case -ffreestanding
3304 // is not specified.
3305 if (Triple.isOSDarwin() && !IsHosted)
3306 StackProtectorLevel = 0;
3309 if (StackProtectorLevel) {
3310 CmdArgs.push_back("-stack-protector");
3311 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
3314 // --param ssp-buffer-size=
3315 for (const Arg *A : Args.filtered(options::OPT__param)) {
3316 StringRef Str(A->getValue());
3317 if (Str.startswith("ssp-buffer-size=")) {
3318 if (StackProtectorLevel) {
3319 CmdArgs.push_back("-stack-protector-buffer-size");
3320 // FIXME: Verify the argument is a valid integer.
3321 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
3327 // Translate -mstackrealign
3328 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
3330 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
3332 if (Args.hasArg(options::OPT_mstack_alignment)) {
3333 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
3334 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
3337 if (Args.hasArg(options::OPT_mstack_probe_size)) {
3338 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
3341 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
3343 CmdArgs.push_back("-mstack-probe-size=0");
3346 switch (getToolChain().getArch()) {
3347 case llvm::Triple::aarch64:
3348 case llvm::Triple::aarch64_be:
3349 case llvm::Triple::arm:
3350 case llvm::Triple::armeb:
3351 case llvm::Triple::thumb:
3352 case llvm::Triple::thumbeb:
3353 CmdArgs.push_back("-fallow-half-arguments-and-returns");
3360 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
3361 options::OPT_mno_restrict_it)) {
3362 if (A->getOption().matches(options::OPT_mrestrict_it)) {
3363 CmdArgs.push_back("-backend-option");
3364 CmdArgs.push_back("-arm-restrict-it");
3366 CmdArgs.push_back("-backend-option");
3367 CmdArgs.push_back("-arm-no-restrict-it");
3369 } else if (Triple.isOSWindows() &&
3370 (Triple.getArch() == llvm::Triple::arm ||
3371 Triple.getArch() == llvm::Triple::thumb)) {
3372 // Windows on ARM expects restricted IT blocks
3373 CmdArgs.push_back("-backend-option");
3374 CmdArgs.push_back("-arm-restrict-it");
3377 // Forward -cl options to -cc1
3378 if (Args.getLastArg(options::OPT_cl_opt_disable)) {
3379 CmdArgs.push_back("-cl-opt-disable");
3381 if (Args.getLastArg(options::OPT_cl_strict_aliasing)) {
3382 CmdArgs.push_back("-cl-strict-aliasing");
3384 if (Args.getLastArg(options::OPT_cl_single_precision_constant)) {
3385 CmdArgs.push_back("-cl-single-precision-constant");
3387 if (Args.getLastArg(options::OPT_cl_finite_math_only)) {
3388 CmdArgs.push_back("-cl-finite-math-only");
3390 if (Args.getLastArg(options::OPT_cl_kernel_arg_info)) {
3391 CmdArgs.push_back("-cl-kernel-arg-info");
3393 if (Args.getLastArg(options::OPT_cl_unsafe_math_optimizations)) {
3394 CmdArgs.push_back("-cl-unsafe-math-optimizations");
3396 if (Args.getLastArg(options::OPT_cl_fast_relaxed_math)) {
3397 CmdArgs.push_back("-cl-fast-relaxed-math");
3399 if (Args.getLastArg(options::OPT_cl_mad_enable)) {
3400 CmdArgs.push_back("-cl-mad-enable");
3402 if (Args.getLastArg(options::OPT_cl_no_signed_zeros)) {
3403 CmdArgs.push_back("-cl-no-signed-zeros");
3405 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
3406 std::string CLStdStr = "-cl-std=";
3407 CLStdStr += A->getValue();
3408 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
3410 if (Args.getLastArg(options::OPT_cl_denorms_are_zero)) {
3411 CmdArgs.push_back("-cl-denorms-are-zero");
3413 if (Args.getLastArg(options::OPT_cl_fp32_correctly_rounded_divide_sqrt)) {
3414 CmdArgs.push_back("-cl-fp32-correctly-rounded-divide-sqrt");
3417 // Forward -f options with positive and negative forms; we translate
3419 if (Arg *A = getLastProfileSampleUseArg(Args)) {
3420 StringRef fname = A->getValue();
3421 if (!llvm::sys::fs::exists(fname))
3422 D.Diag(diag::err_drv_no_such_file) << fname;
3424 A->render(Args, CmdArgs);
3427 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3428 options::OPT_fno_debug_info_for_profiling, false))
3429 CmdArgs.push_back("-fdebug-info-for-profiling");
3431 // -fbuiltin is default unless -mkernel is used.
3433 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
3434 !Args.hasArg(options::OPT_mkernel));
3436 CmdArgs.push_back("-fno-builtin");
3438 // -ffreestanding implies -fno-builtin.
3439 if (Args.hasArg(options::OPT_ffreestanding))
3440 UseBuiltins = false;
3442 // Process the -fno-builtin-* options.
3443 for (const auto &Arg : Args) {
3444 const Option &O = Arg->getOption();
3445 if (!O.matches(options::OPT_fno_builtin_))
3449 // If -fno-builtin is specified, then there's no need to pass the option to
3454 StringRef FuncName = Arg->getValue();
3455 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
3458 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
3459 options::OPT_fno_assume_sane_operator_new))
3460 CmdArgs.push_back("-fno-assume-sane-operator-new");
3462 // -fblocks=0 is default.
3463 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
3464 getToolChain().IsBlocksDefault()) ||
3465 (Args.hasArg(options::OPT_fgnu_runtime) &&
3466 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
3467 !Args.hasArg(options::OPT_fno_blocks))) {
3468 CmdArgs.push_back("-fblocks");
3470 if (!Args.hasArg(options::OPT_fgnu_runtime) &&
3471 !getToolChain().hasBlocksRuntime())
3472 CmdArgs.push_back("-fblocks-runtime-optional");
3475 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
3477 types::isCXX(InputType)) {
3478 CmdArgs.push_back("-fcoroutines-ts");
3481 // -fmodules enables the use of precompiled modules (off by default).
3482 // Users can pass -fno-cxx-modules to turn off modules support for
3483 // C++/Objective-C++ programs.
3484 bool HaveClangModules = false;
3485 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
3486 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
3487 options::OPT_fno_cxx_modules, true);
3488 if (AllowedInCXX || !types::isCXX(InputType)) {
3489 CmdArgs.push_back("-fmodules");
3490 HaveClangModules = true;
3494 bool HaveAnyModules = HaveClangModules;
3495 if (Args.hasArg(options::OPT_fmodules_ts)) {
3496 CmdArgs.push_back("-fmodules-ts");
3497 HaveAnyModules = true;
3500 // -fmodule-maps enables implicit reading of module map files. By default,
3501 // this is enabled if we are using Clang's flavor of precompiled modules.
3502 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
3503 options::OPT_fno_implicit_module_maps, HaveClangModules)) {
3504 CmdArgs.push_back("-fimplicit-module-maps");
3507 // -fmodules-decluse checks that modules used are declared so (off by
3509 if (Args.hasFlag(options::OPT_fmodules_decluse,
3510 options::OPT_fno_modules_decluse, false)) {
3511 CmdArgs.push_back("-fmodules-decluse");
3514 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
3515 // all #included headers are part of modules.
3516 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
3517 options::OPT_fno_modules_strict_decluse, false)) {
3518 CmdArgs.push_back("-fmodules-strict-decluse");
3521 // -fno-implicit-modules turns off implicitly compiling modules on demand.
3522 if (!Args.hasFlag(options::OPT_fimplicit_modules,
3523 options::OPT_fno_implicit_modules, HaveClangModules)) {
3525 CmdArgs.push_back("-fno-implicit-modules");
3526 } else if (HaveAnyModules) {
3527 // -fmodule-cache-path specifies where our implicitly-built module files
3528 // should be written.
3529 SmallString<128> Path;
3530 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
3531 Path = A->getValue();
3532 if (C.isForDiagnostics()) {
3533 // When generating crash reports, we want to emit the modules along with
3534 // the reproduction sources, so we ignore any provided module path.
3535 Path = Output.getFilename();
3536 llvm::sys::path::replace_extension(Path, ".cache");
3537 llvm::sys::path::append(Path, "modules");
3538 } else if (Path.empty()) {
3539 // No module path was provided: use the default.
3540 llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Path);
3541 llvm::sys::path::append(Path, "org.llvm.clang.");
3542 appendUserToPath(Path);
3543 llvm::sys::path::append(Path, "ModuleCache");
3545 const char Arg[] = "-fmodules-cache-path=";
3546 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
3547 CmdArgs.push_back(Args.MakeArgString(Path));
3550 if (HaveAnyModules) {
3551 // -fprebuilt-module-path specifies where to load the prebuilt module files.
3552 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path))
3553 CmdArgs.push_back(Args.MakeArgString(
3554 std::string("-fprebuilt-module-path=") + A->getValue()));
3557 // -fmodule-name specifies the module that is currently being built (or
3558 // used for header checking by -fmodule-maps).
3559 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
3561 // -fmodule-map-file can be used to specify files containing module
3563 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
3565 // -fbuiltin-module-map can be used to load the clang
3566 // builtin headers modulemap file.
3567 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
3568 SmallString<128> BuiltinModuleMap(getToolChain().getDriver().ResourceDir);
3569 llvm::sys::path::append(BuiltinModuleMap, "include");
3570 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
3571 if (llvm::sys::fs::exists(BuiltinModuleMap)) {
3572 CmdArgs.push_back(Args.MakeArgString("-fmodule-map-file=" +
3577 // -fmodule-file can be used to specify files containing precompiled modules.
3579 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
3581 Args.ClaimAllArgs(options::OPT_fmodule_file);
3583 // When building modules and generating crashdumps, we need to dump a module
3584 // dependency VFS alongside the output.
3585 if (HaveClangModules && C.isForDiagnostics()) {
3586 SmallString<128> VFSDir(Output.getFilename());
3587 llvm::sys::path::replace_extension(VFSDir, ".cache");
3588 // Add the cache directory as a temp so the crash diagnostics pick it up.
3589 C.addTempFile(Args.MakeArgString(VFSDir));
3591 llvm::sys::path::append(VFSDir, "vfs");
3592 CmdArgs.push_back("-module-dependency-dir");
3593 CmdArgs.push_back(Args.MakeArgString(VFSDir));
3596 if (HaveClangModules)
3597 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
3599 // Pass through all -fmodules-ignore-macro arguments.
3600 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
3601 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
3602 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
3604 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
3606 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
3607 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
3608 D.Diag(diag::err_drv_argument_not_allowed_with)
3609 << A->getAsString(Args) << "-fbuild-session-timestamp";
3611 llvm::sys::fs::file_status Status;
3612 if (llvm::sys::fs::status(A->getValue(), Status))
3613 D.Diag(diag::err_drv_no_such_file) << A->getValue();
3615 Args.MakeArgString("-fbuild-session-timestamp=" +
3616 Twine((uint64_t)Status.getLastModificationTime()
3621 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
3622 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
3623 options::OPT_fbuild_session_file))
3624 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
3626 Args.AddLastArg(CmdArgs,
3627 options::OPT_fmodules_validate_once_per_build_session);
3630 Args.AddLastArg(CmdArgs, options::OPT_fmodules_validate_system_headers);
3631 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
3633 // -faccess-control is default.
3634 if (Args.hasFlag(options::OPT_fno_access_control,
3635 options::OPT_faccess_control, false))
3636 CmdArgs.push_back("-fno-access-control");
3638 // -felide-constructors is the default.
3639 if (Args.hasFlag(options::OPT_fno_elide_constructors,
3640 options::OPT_felide_constructors, false))
3641 CmdArgs.push_back("-fno-elide-constructors");
3643 ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode();
3645 if (KernelOrKext || (types::isCXX(InputType) &&
3646 (RTTIMode == ToolChain::RM_DisabledExplicitly ||
3647 RTTIMode == ToolChain::RM_DisabledImplicitly)))
3648 CmdArgs.push_back("-fno-rtti");
3650 // -fshort-enums=0 is default for all architectures except Hexagon.
3651 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
3652 getToolChain().getArch() == llvm::Triple::hexagon))
3653 CmdArgs.push_back("-fshort-enums");
3655 // -fsigned-char is default.
3656 if (Arg *A = Args.getLastArg(
3657 options::OPT_fsigned_char, options::OPT_fno_signed_char,
3658 options::OPT_funsigned_char, options::OPT_fno_unsigned_char)) {
3659 if (A->getOption().matches(options::OPT_funsigned_char) ||
3660 A->getOption().matches(options::OPT_fno_signed_char)) {
3661 CmdArgs.push_back("-fno-signed-char");
3663 } else if (!isSignedCharDefault(getToolChain().getTriple())) {
3664 CmdArgs.push_back("-fno-signed-char");
3667 // -fuse-cxa-atexit is default.
3669 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
3670 !IsWindowsCygnus && !IsWindowsGNU &&
3671 getToolChain().getTriple().getOS() != llvm::Triple::Solaris &&
3672 getToolChain().getArch() != llvm::Triple::hexagon &&
3673 getToolChain().getArch() != llvm::Triple::xcore &&
3674 ((getToolChain().getTriple().getVendor() !=
3675 llvm::Triple::MipsTechnologies) ||
3676 getToolChain().getTriple().hasEnvironment())) ||
3678 CmdArgs.push_back("-fno-use-cxa-atexit");
3680 // -fms-extensions=0 is default.
3681 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
3683 CmdArgs.push_back("-fms-extensions");
3685 // -fno-use-line-directives is default.
3686 if (Args.hasFlag(options::OPT_fuse_line_directives,
3687 options::OPT_fno_use_line_directives, false))
3688 CmdArgs.push_back("-fuse-line-directives");
3690 // -fms-compatibility=0 is default.
3691 if (Args.hasFlag(options::OPT_fms_compatibility,
3692 options::OPT_fno_ms_compatibility,
3694 Args.hasFlag(options::OPT_fms_extensions,
3695 options::OPT_fno_ms_extensions, true))))
3696 CmdArgs.push_back("-fms-compatibility");
3699 getToolChain().computeMSVCVersion(&getToolChain().getDriver(), Args);
3702 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
3704 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
3705 if (ImplyVCPPCXXVer) {
3706 StringRef LanguageStandard;
3707 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
3708 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
3709 .Case("c++14", "-std=c++14")
3710 .Case("c++latest", "-std=c++1z")
3712 if (LanguageStandard.empty())
3713 D.Diag(clang::diag::warn_drv_unused_argument)
3714 << StdArg->getAsString(Args);
3717 if (LanguageStandard.empty()) {
3718 if (IsMSVC2015Compatible)
3719 LanguageStandard = "-std=c++14";
3721 LanguageStandard = "-std=c++11";
3724 CmdArgs.push_back(LanguageStandard.data());
3727 // -fno-borland-extensions is default.
3728 if (Args.hasFlag(options::OPT_fborland_extensions,
3729 options::OPT_fno_borland_extensions, false))
3730 CmdArgs.push_back("-fborland-extensions");
3732 // -fno-declspec is default, except for PS4.
3733 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
3734 getToolChain().getTriple().isPS4()))
3735 CmdArgs.push_back("-fdeclspec");
3736 else if (Args.hasArg(options::OPT_fno_declspec))
3737 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
3739 // -fthreadsafe-static is default, except for MSVC compatibility versions less
3741 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
3742 options::OPT_fno_threadsafe_statics,
3743 !IsWindowsMSVC || IsMSVC2015Compatible))
3744 CmdArgs.push_back("-fno-threadsafe-statics");
3746 // -fno-delayed-template-parsing is default, except for Windows where MSVC STL
3748 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
3749 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
3750 CmdArgs.push_back("-fdelayed-template-parsing");
3752 // -fgnu-keywords default varies depending on language; only pass if
3754 if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
3755 options::OPT_fno_gnu_keywords))
3756 A->render(Args, CmdArgs);
3758 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
3760 CmdArgs.push_back("-fgnu89-inline");
3762 if (Args.hasArg(options::OPT_fno_inline))
3763 CmdArgs.push_back("-fno-inline");
3765 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
3766 options::OPT_finline_hint_functions,
3767 options::OPT_fno_inline_functions))
3768 InlineArg->render(Args, CmdArgs);
3770 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
3771 options::OPT_fno_experimental_new_pass_manager);
3773 ObjCRuntime objcRuntime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
3775 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and
3776 // legacy is the default. Except for deployment target of 10.5,
3777 // next runtime is always legacy dispatch and -fno-objc-legacy-dispatch
3778 // gets ignored silently.
3779 if (objcRuntime.isNonFragile()) {
3780 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
3781 options::OPT_fno_objc_legacy_dispatch,
3782 objcRuntime.isLegacyDispatchDefaultForArch(
3783 getToolChain().getArch()))) {
3784 if (getToolChain().UseObjCMixedDispatch())
3785 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
3787 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
3791 // When ObjectiveC legacy runtime is in effect on MacOSX,
3792 // turn on the option to do Array/Dictionary subscripting
3794 if (getToolChain().getArch() == llvm::Triple::x86 &&
3795 getToolChain().getTriple().isMacOSX() &&
3796 !getToolChain().getTriple().isMacOSXVersionLT(10, 7) &&
3797 objcRuntime.getKind() == ObjCRuntime::FragileMacOSX &&
3798 objcRuntime.isNeXTFamily())
3799 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
3801 // -fencode-extended-block-signature=1 is default.
3802 if (getToolChain().IsEncodeExtendedBlockSignatureDefault()) {
3803 CmdArgs.push_back("-fencode-extended-block-signature");
3806 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
3807 // NOTE: This logic is duplicated in ToolChains.cpp.
3808 bool ARC = isObjCAutoRefCount(Args);
3810 getToolChain().CheckObjCARC();
3812 CmdArgs.push_back("-fobjc-arc");
3814 // FIXME: It seems like this entire block, and several around it should be
3815 // wrapped in isObjC, but for now we just use it here as this is where it
3816 // was being used previously.
3817 if (types::isCXX(InputType) && types::isObjC(InputType)) {
3818 if (getToolChain().GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
3819 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
3821 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
3824 // Allow the user to enable full exceptions code emission.
3825 // We define off for Objective-CC, on for Objective-C++.
3826 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
3827 options::OPT_fno_objc_arc_exceptions,
3828 /*default*/ types::isCXX(InputType)))
3829 CmdArgs.push_back("-fobjc-arc-exceptions");
3832 // Silence warning for full exception code emission options when explicitly
3833 // set to use no ARC.
3834 if (Args.hasArg(options::OPT_fno_objc_arc)) {
3835 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
3836 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
3839 // -fobjc-infer-related-result-type is the default, except in the Objective-C
3841 if (rewriteKind != RK_None)
3842 CmdArgs.push_back("-fno-objc-infer-related-result-type");
3844 // Pass down -fobjc-weak or -fno-objc-weak if present.
3845 if (types::isObjC(InputType)) {
3846 auto WeakArg = Args.getLastArg(options::OPT_fobjc_weak,
3847 options::OPT_fno_objc_weak);
3850 } else if (!objcRuntime.allowsWeak()) {
3851 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
3852 D.Diag(diag::err_objc_weak_unsupported);
3854 WeakArg->render(Args, CmdArgs);
3858 if (Args.hasFlag(options::OPT_fapplication_extension,
3859 options::OPT_fno_application_extension, false))
3860 CmdArgs.push_back("-fapplication-extension");
3862 // Handle GCC-style exception args.
3863 if (!C.getDriver().IsCLMode())
3864 addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, objcRuntime,
3867 if (Args.hasArg(options::OPT_fsjlj_exceptions) ||
3868 getToolChain().UseSjLjExceptions(Args))
3869 CmdArgs.push_back("-fsjlj-exceptions");
3871 // C++ "sane" operator new.
3872 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
3873 options::OPT_fno_assume_sane_operator_new))
3874 CmdArgs.push_back("-fno-assume-sane-operator-new");
3876 // -frelaxed-template-template-args is off by default, as it is a severe
3877 // breaking change until a corresponding change to template partial ordering
3879 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
3880 options::OPT_fno_relaxed_template_template_args, false))
3881 CmdArgs.push_back("-frelaxed-template-template-args");
3883 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
3885 if (Args.hasFlag(options::OPT_fsized_deallocation,
3886 options::OPT_fno_sized_deallocation, false))
3887 CmdArgs.push_back("-fsized-deallocation");
3889 // -faligned-allocation is on by default in C++17 onwards and otherwise off
3891 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
3892 options::OPT_fno_aligned_allocation,
3893 options::OPT_faligned_new_EQ)) {
3894 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
3895 CmdArgs.push_back("-fno-aligned-allocation");
3897 CmdArgs.push_back("-faligned-allocation");
3900 // The default new alignment can be specified using a dedicated option or via
3901 // a GCC-compatible option that also turns on aligned allocation.
3902 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
3903 options::OPT_faligned_new_EQ))
3905 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
3907 // -fconstant-cfstrings is default, and may be subject to argument translation
3909 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
3910 options::OPT_fno_constant_cfstrings) ||
3911 !Args.hasFlag(options::OPT_mconstant_cfstrings,
3912 options::OPT_mno_constant_cfstrings))
3913 CmdArgs.push_back("-fno-constant-cfstrings");
3915 // -fshort-wchar default varies depending on platform; only
3916 // pass if specified.
3917 if (Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
3918 options::OPT_fno_short_wchar))
3919 A->render(Args, CmdArgs);
3921 // -fno-pascal-strings is default, only pass non-default.
3922 if (Args.hasFlag(options::OPT_fpascal_strings,
3923 options::OPT_fno_pascal_strings, false))
3924 CmdArgs.push_back("-fpascal-strings");
3926 // Honor -fpack-struct= and -fpack-struct, if given. Note that
3927 // -fno-pack-struct doesn't apply to -fpack-struct=.
3928 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
3929 std::string PackStructStr = "-fpack-struct=";
3930 PackStructStr += A->getValue();
3931 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
3932 } else if (Args.hasFlag(options::OPT_fpack_struct,
3933 options::OPT_fno_pack_struct, false)) {
3934 CmdArgs.push_back("-fpack-struct=1");
3937 // Handle -fmax-type-align=N and -fno-type-align
3938 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
3939 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
3940 if (!SkipMaxTypeAlign) {
3941 std::string MaxTypeAlignStr = "-fmax-type-align=";
3942 MaxTypeAlignStr += A->getValue();
3943 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
3945 } else if (getToolChain().getTriple().isOSDarwin()) {
3946 if (!SkipMaxTypeAlign) {
3947 std::string MaxTypeAlignStr = "-fmax-type-align=16";
3948 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
3952 // -fcommon is the default unless compiling kernel code or the target says so
3953 bool NoCommonDefault =
3954 KernelOrKext || isNoCommonDefault(getToolChain().getTriple());
3955 if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
3957 CmdArgs.push_back("-fno-common");
3959 // -fsigned-bitfields is default, and clang doesn't yet support
3960 // -funsigned-bitfields.
3961 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
3962 options::OPT_funsigned_bitfields))
3963 D.Diag(diag::warn_drv_clang_unsupported)
3964 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
3966 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
3967 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
3968 D.Diag(diag::err_drv_clang_unsupported)
3969 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
3971 // -finput_charset=UTF-8 is default. Reject others
3972 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
3973 StringRef value = inputCharset->getValue();
3974 if (!value.equals_lower("utf-8"))
3975 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
3979 // -fexec_charset=UTF-8 is default. Reject others
3980 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
3981 StringRef value = execCharset->getValue();
3982 if (!value.equals_lower("utf-8"))
3983 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
3987 // -fcaret-diagnostics is default.
3988 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
3989 options::OPT_fno_caret_diagnostics, true))
3990 CmdArgs.push_back("-fno-caret-diagnostics");
3992 // -fdiagnostics-fixit-info is default, only pass non-default.
3993 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
3994 options::OPT_fno_diagnostics_fixit_info))
3995 CmdArgs.push_back("-fno-diagnostics-fixit-info");
3997 // Enable -fdiagnostics-show-option by default.
3998 if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
3999 options::OPT_fno_diagnostics_show_option))
4000 CmdArgs.push_back("-fdiagnostics-show-option");
4003 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
4004 CmdArgs.push_back("-fdiagnostics-show-category");
4005 CmdArgs.push_back(A->getValue());
4008 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
4009 options::OPT_fno_diagnostics_show_hotness, false))
4010 CmdArgs.push_back("-fdiagnostics-show-hotness");
4012 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
4013 CmdArgs.push_back("-fdiagnostics-format");
4014 CmdArgs.push_back(A->getValue());
4017 if (Arg *A = Args.getLastArg(
4018 options::OPT_fdiagnostics_show_note_include_stack,
4019 options::OPT_fno_diagnostics_show_note_include_stack)) {
4020 if (A->getOption().matches(
4021 options::OPT_fdiagnostics_show_note_include_stack))
4022 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
4024 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
4027 // Color diagnostics are parsed by the driver directly from argv
4028 // and later re-parsed to construct this job; claim any possible
4029 // color diagnostic here to avoid warn_drv_unused_argument and
4030 // diagnose bad OPT_fdiagnostics_color_EQ values.
4031 for (Arg *A : Args) {
4032 const Option &O = A->getOption();
4033 if (!O.matches(options::OPT_fcolor_diagnostics) &&
4034 !O.matches(options::OPT_fdiagnostics_color) &&
4035 !O.matches(options::OPT_fno_color_diagnostics) &&
4036 !O.matches(options::OPT_fno_diagnostics_color) &&
4037 !O.matches(options::OPT_fdiagnostics_color_EQ))
4039 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
4040 StringRef Value(A->getValue());
4041 if (Value != "always" && Value != "never" && Value != "auto")
4042 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4043 << ("-fdiagnostics-color=" + Value).str();
4047 if (D.getDiags().getDiagnosticOptions().ShowColors)
4048 CmdArgs.push_back("-fcolor-diagnostics");
4050 if (Args.hasArg(options::OPT_fansi_escape_codes))
4051 CmdArgs.push_back("-fansi-escape-codes");
4053 if (!Args.hasFlag(options::OPT_fshow_source_location,
4054 options::OPT_fno_show_source_location))
4055 CmdArgs.push_back("-fno-show-source-location");
4057 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
4058 CmdArgs.push_back("-fdiagnostics-absolute-paths");
4060 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
4062 CmdArgs.push_back("-fno-show-column");
4064 if (!Args.hasFlag(options::OPT_fspell_checking,
4065 options::OPT_fno_spell_checking))
4066 CmdArgs.push_back("-fno-spell-checking");
4068 // -fno-asm-blocks is default.
4069 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4071 CmdArgs.push_back("-fasm-blocks");
4073 // -fgnu-inline-asm is default.
4074 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4075 options::OPT_fno_gnu_inline_asm, true))
4076 CmdArgs.push_back("-fno-gnu-inline-asm");
4078 // Enable vectorization per default according to the optimization level
4079 // selected. For optimization levels that want vectorization we use the alias
4080 // option to simplify the hasFlag logic.
4081 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4082 OptSpecifier VectorizeAliasOption =
4083 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4084 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4085 options::OPT_fno_vectorize, EnableVec))
4086 CmdArgs.push_back("-vectorize-loops");
4088 // -fslp-vectorize is enabled based on the optimization level selected.
4089 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4090 OptSpecifier SLPVectAliasOption =
4091 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4092 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4093 options::OPT_fno_slp_vectorize, EnableSLPVec))
4094 CmdArgs.push_back("-vectorize-slp");
4096 // -fno-slp-vectorize-aggressive is default.
4097 if (Args.hasFlag(options::OPT_fslp_vectorize_aggressive,
4098 options::OPT_fno_slp_vectorize_aggressive, false))
4099 CmdArgs.push_back("-vectorize-slp-aggressive");
4101 if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4102 A->render(Args, CmdArgs);
4104 if (Arg *A = Args.getLastArg(
4105 options::OPT_fsanitize_undefined_strip_path_components_EQ))
4106 A->render(Args, CmdArgs);
4108 // -fdollars-in-identifiers default varies depending on platform and
4109 // language; only pass if specified.
4110 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4111 options::OPT_fno_dollars_in_identifiers)) {
4112 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4113 CmdArgs.push_back("-fdollars-in-identifiers");
4115 CmdArgs.push_back("-fno-dollars-in-identifiers");
4118 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4119 // practical purposes.
4120 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4121 options::OPT_fno_unit_at_a_time)) {
4122 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4123 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4126 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4127 options::OPT_fno_apple_pragma_pack, false))
4128 CmdArgs.push_back("-fapple-pragma-pack");
4130 // le32-specific flags:
4131 // -fno-math-builtin: clang should not convert math builtins to intrinsics
4133 if (getToolChain().getArch() == llvm::Triple::le32) {
4134 CmdArgs.push_back("-fno-math-builtin");
4137 if (Args.hasFlag(options::OPT_fsave_optimization_record,
4138 options::OPT_fno_save_optimization_record, false)) {
4139 CmdArgs.push_back("-opt-record-file");
4141 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4143 CmdArgs.push_back(A->getValue());
4146 if (Output.isFilename() && (Args.hasArg(options::OPT_c) ||
4147 Args.hasArg(options::OPT_S))) {
4148 F = Output.getFilename();
4150 // Use the input filename.
4151 F = llvm::sys::path::stem(Input.getBaseInput());
4153 // If we're compiling for an offload architecture (i.e. a CUDA device),
4154 // we need to make the file name for the device compilation different
4155 // from the host compilation.
4156 if (!JA.isDeviceOffloading(Action::OFK_None) &&
4157 !JA.isDeviceOffloading(Action::OFK_Host)) {
4158 llvm::sys::path::replace_extension(F, "");
4159 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
4160 Triple.normalize());
4162 F += JA.getOffloadingArch();
4166 llvm::sys::path::replace_extension(F, "opt.yaml");
4167 CmdArgs.push_back(Args.MakeArgString(F));
4171 // Default to -fno-builtin-str{cat,cpy} on Darwin for ARM.
4173 // FIXME: Now that PR4941 has been fixed this can be enabled.
4175 if (getToolChain().getTriple().isOSDarwin() &&
4176 (getToolChain().getArch() == llvm::Triple::arm ||
4177 getToolChain().getArch() == llvm::Triple::thumb)) {
4178 if (!Args.hasArg(options::OPT_fbuiltin_strcat))
4179 CmdArgs.push_back("-fno-builtin-strcat");
4180 if (!Args.hasArg(options::OPT_fbuiltin_strcpy))
4181 CmdArgs.push_back("-fno-builtin-strcpy");
4185 // Enable rewrite includes if the user's asked for it or if we're generating
4187 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
4188 // nice to enable this when doing a crashdump for modules as well.
4189 if (Args.hasFlag(options::OPT_frewrite_includes,
4190 options::OPT_fno_rewrite_includes, false) ||
4191 (C.isForDiagnostics() && !HaveAnyModules))
4192 CmdArgs.push_back("-frewrite-includes");
4194 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
4195 if (Arg *A = Args.getLastArg(options::OPT_traditional,
4196 options::OPT_traditional_cpp)) {
4197 if (isa<PreprocessJobAction>(JA))
4198 CmdArgs.push_back("-traditional-cpp");
4200 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
4203 Args.AddLastArg(CmdArgs, options::OPT_dM);
4204 Args.AddLastArg(CmdArgs, options::OPT_dD);
4206 // Handle serialized diagnostics.
4207 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
4208 CmdArgs.push_back("-serialize-diagnostic-file");
4209 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
4212 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
4213 CmdArgs.push_back("-fretain-comments-from-system-headers");
4215 // Forward -fcomment-block-commands to -cc1.
4216 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
4217 // Forward -fparse-all-comments to -cc1.
4218 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
4220 // Turn -fplugin=name.so into -load name.so
4221 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
4222 CmdArgs.push_back("-load");
4223 CmdArgs.push_back(A->getValue());
4227 // Setup statistics file output.
4228 if (const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ)) {
4229 StringRef SaveStats = A->getValue();
4231 SmallString<128> StatsFile;
4232 bool DoSaveStats = false;
4233 if (SaveStats == "obj") {
4234 if (Output.isFilename()) {
4235 StatsFile.assign(Output.getFilename());
4236 llvm::sys::path::remove_filename(StatsFile);
4239 } else if (SaveStats == "cwd") {
4242 D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
4246 StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
4247 llvm::sys::path::append(StatsFile, BaseName);
4248 llvm::sys::path::replace_extension(StatsFile, "stats");
4249 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") +
4254 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
4256 // -finclude-default-header flag is for preprocessor,
4257 // do not pass it to other cc1 commands when save-temps is enabled
4258 if (C.getDriver().isSaveTempsEnabled() &&
4259 !isa<PreprocessJobAction>(JA)) {
4260 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
4262 if (StringRef(Arg->getValue()) != "-finclude-default-header")
4263 CmdArgs.push_back(Arg->getValue());
4267 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
4269 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
4272 // We translate this by hand to the -cc1 argument, since nightly test uses
4273 // it and developers have been trained to spell it with -mllvm. Both
4274 // spellings are now deprecated and should be removed.
4275 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
4276 CmdArgs.push_back("-disable-llvm-optzns");
4278 A->render(Args, CmdArgs);
4282 // With -save-temps, we want to save the unoptimized bitcode output from the
4283 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
4285 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
4286 // has slightly different breakdown between stages.
4287 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
4288 // pristine IR generated by the frontend. Ideally, a new compile action should
4289 // be added so both IR can be captured.
4290 if (C.getDriver().isSaveTempsEnabled() &&
4291 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
4292 isa<CompileJobAction>(JA))
4293 CmdArgs.push_back("-disable-llvm-passes");
4295 if (Output.getType() == types::TY_Dependencies) {
4296 // Handled with other dependency code.
4297 } else if (Output.isFilename()) {
4298 CmdArgs.push_back("-o");
4299 CmdArgs.push_back(Output.getFilename());
4301 assert(Output.isNothing() && "Invalid output.");
4304 addDashXForInput(Args, Input, CmdArgs);
4306 if (Input.isFilename())
4307 CmdArgs.push_back(Input.getFilename());
4309 Input.getInputArg().renderAsInput(Args, CmdArgs);
4311 Args.AddAllArgs(CmdArgs, options::OPT_undef);
4313 const char *Exec = getToolChain().getDriver().getClangProgramPath();
4315 // Optionally embed the -cc1 level arguments into the debug info, for build
4317 // Also record command line arguments into the debug info if
4318 // -grecord-gcc-switches options is set on.
4319 // By default, -gno-record-gcc-switches is set on and no recording.
4320 if (getToolChain().UseDwarfDebugFlags() ||
4321 Args.hasFlag(options::OPT_grecord_gcc_switches,
4322 options::OPT_gno_record_gcc_switches, false)) {
4323 ArgStringList OriginalArgs;
4324 for (const auto &Arg : Args)
4325 Arg->render(Args, OriginalArgs);
4327 SmallString<256> Flags;
4329 for (const char *OriginalArg : OriginalArgs) {
4330 SmallString<128> EscapedArg;
4331 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
4333 Flags += EscapedArg;
4335 CmdArgs.push_back("-dwarf-debug-flags");
4336 CmdArgs.push_back(Args.MakeArgString(Flags));
4339 // Add the split debug info name to the command lines here so we
4340 // can propagate it to the backend.
4341 bool SplitDwarf = SplitDwarfArg && getToolChain().getTriple().isOSLinux() &&
4342 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4343 isa<BackendJobAction>(JA));
4344 const char *SplitDwarfOut;
4346 CmdArgs.push_back("-split-dwarf-file");
4347 SplitDwarfOut = SplitDebugName(Args, Input);
4348 CmdArgs.push_back(SplitDwarfOut);
4351 // Host-side cuda compilation receives device-side outputs as Inputs[1...].
4352 // Include them with -fcuda-include-gpubinary.
4353 if (IsCuda && Inputs.size() > 1)
4354 for (auto I = std::next(Inputs.begin()), E = Inputs.end(); I != E; ++I) {
4355 CmdArgs.push_back("-fcuda-include-gpubinary");
4356 CmdArgs.push_back(I->getFilename());
4359 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
4360 // to specify the result of the compile phase on the host, so the meaningful
4361 // device declarations can be identified. Also, -fopenmp-is-device is passed
4362 // along to tell the frontend that it is generating code for a device, so that
4363 // only the relevant declarations are emitted.
4364 if (IsOpenMPDevice && Inputs.size() == 2) {
4365 CmdArgs.push_back("-fopenmp-is-device");
4366 CmdArgs.push_back("-fopenmp-host-ir-file-path");
4367 CmdArgs.push_back(Args.MakeArgString(Inputs.back().getFilename()));
4370 // For all the host OpenMP offloading compile jobs we need to pass the targets
4371 // information using -fopenmp-targets= option.
4372 if (isa<CompileJobAction>(JA) && JA.isHostOffloading(Action::OFK_OpenMP)) {
4373 SmallString<128> TargetInfo("-fopenmp-targets=");
4375 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
4376 assert(Tgts && Tgts->getNumValues() &&
4377 "OpenMP offloading has to have targets specified.");
4378 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
4381 // We need to get the string from the triple because it may be not exactly
4382 // the same as the one we get directly from the arguments.
4383 llvm::Triple T(Tgts->getValue(i));
4384 TargetInfo += T.getTriple();
4386 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
4389 bool WholeProgramVTables =
4390 Args.hasFlag(options::OPT_fwhole_program_vtables,
4391 options::OPT_fno_whole_program_vtables, false);
4392 if (WholeProgramVTables) {
4393 if (!D.isUsingLTO())
4394 D.Diag(diag::err_drv_argument_only_allowed_with)
4395 << "-fwhole-program-vtables"
4397 CmdArgs.push_back("-fwhole-program-vtables");
4400 // Finally add the compile command to the compilation.
4401 if (Args.hasArg(options::OPT__SLASH_fallback) &&
4402 Output.getType() == types::TY_Object &&
4403 (InputType == types::TY_C || InputType == types::TY_CXX)) {
4405 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
4406 C.addCommand(llvm::make_unique<FallbackCommand>(
4407 JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
4408 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
4409 isa<PrecompileJobAction>(JA)) {
4410 // In /fallback builds, run the main compilation even if the pch generation
4411 // fails, so that the main compilation's fallback to cl.exe runs.
4412 C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
4415 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
4418 // Handle the debug info splitting at object creation time if we're
4419 // creating an object.
4420 // TODO: Currently only works on linux with newer objcopy.
4421 if (SplitDwarf && Output.getType() == types::TY_Object)
4422 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, SplitDwarfOut);
4424 if (Arg *A = Args.getLastArg(options::OPT_pg))
4425 if (Args.hasArg(options::OPT_fomit_frame_pointer))
4426 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
4427 << A->getAsString(Args);
4429 // Claim some arguments which clang supports automatically.
4431 // -fpch-preprocess is used with gcc to add a special marker in the output to
4432 // include the PCH file. Clang's PTH solution is completely transparent, so we
4433 // do not need to deal with it at all.
4434 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
4436 // Claim some arguments which clang doesn't support, but we don't
4437 // care to warn the user about.
4438 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
4439 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
4441 // Disable warnings for clang -E -emit-llvm foo.c
4442 Args.ClaimAllArgs(options::OPT_emit_llvm);
4445 Clang::Clang(const ToolChain &TC)
4446 // CAUTION! The first constructor argument ("clang") is not arbitrary,
4447 // as it is for other tools. Some operations on a Tool actually test
4448 // whether that tool is Clang based on the Tool's Name as a string.
4449 : Tool("clang", "clang frontend", TC, RF_Full) {}
4453 /// Add options related to the Objective-C runtime/ABI.
4455 /// Returns true if the runtime is non-fragile.
4456 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
4457 ArgStringList &cmdArgs,
4458 RewriteKind rewriteKind) const {
4459 // Look for the controlling runtime option.
4461 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
4462 options::OPT_fobjc_runtime_EQ);
4464 // Just forward -fobjc-runtime= to the frontend. This supercedes
4465 // options about fragility.
4467 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
4468 ObjCRuntime runtime;
4469 StringRef value = runtimeArg->getValue();
4470 if (runtime.tryParse(value)) {
4471 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
4475 runtimeArg->render(args, cmdArgs);
4479 // Otherwise, we'll need the ABI "version". Version numbers are
4480 // slightly confusing for historical reasons:
4481 // 1 - Traditional "fragile" ABI
4482 // 2 - Non-fragile ABI, version 1
4483 // 3 - Non-fragile ABI, version 2
4484 unsigned objcABIVersion = 1;
4485 // If -fobjc-abi-version= is present, use that to set the version.
4486 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
4487 StringRef value = abiArg->getValue();
4490 else if (value == "2")
4492 else if (value == "3")
4495 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
4497 // Otherwise, determine if we are using the non-fragile ABI.
4498 bool nonFragileABIIsDefault =
4499 (rewriteKind == RK_NonFragile ||
4500 (rewriteKind == RK_None &&
4501 getToolChain().IsObjCNonFragileABIDefault()));
4502 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
4503 options::OPT_fno_objc_nonfragile_abi,
4504 nonFragileABIIsDefault)) {
4505 // Determine the non-fragile ABI version to use.
4506 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
4507 unsigned nonFragileABIVersion = 1;
4509 unsigned nonFragileABIVersion = 2;
4513 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
4514 StringRef value = abiArg->getValue();
4516 nonFragileABIVersion = 1;
4517 else if (value == "2")
4518 nonFragileABIVersion = 2;
4520 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4524 objcABIVersion = 1 + nonFragileABIVersion;
4530 // We don't actually care about the ABI version other than whether
4531 // it's non-fragile.
4532 bool isNonFragile = objcABIVersion != 1;
4534 // If we have no runtime argument, ask the toolchain for its default runtime.
4535 // However, the rewriter only really supports the Mac runtime, so assume that.
4536 ObjCRuntime runtime;
4538 switch (rewriteKind) {
4540 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4543 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
4546 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4551 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
4552 // On Darwin, make this use the default behavior for the toolchain.
4553 if (getToolChain().getTriple().isOSDarwin()) {
4554 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4556 // Otherwise, build for a generic macosx port.
4558 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4563 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
4564 // Legacy behaviour is to target the gnustep runtime if we are in
4565 // non-fragile mode or the GCC runtime in fragile mode.
4567 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(1, 6));
4569 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
4573 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
4577 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
4578 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
4586 bool Asynch = false;
4587 bool NoUnwindC = false;
4589 } // end anonymous namespace
4591 /// /EH controls whether to run destructor cleanups when exceptions are
4592 /// thrown. There are three modifiers:
4593 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
4594 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
4595 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
4596 /// - c: Assume that extern "C" functions are implicitly nounwind.
4597 /// The default is /EHs-c-, meaning cleanups are disabled.
4598 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
4601 std::vector<std::string> EHArgs =
4602 Args.getAllArgValues(options::OPT__SLASH_EH);
4603 for (auto EHVal : EHArgs) {
4604 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
4607 EH.Asynch = maybeConsumeDash(EHVal, I);
4612 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
4615 EH.Synch = maybeConsumeDash(EHVal, I);
4622 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
4626 // The /GX, /GX- flags are only processed if there are not /EH flags.
4627 // The default is that /GX is not specified.
4628 if (EHArgs.empty() &&
4629 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
4630 /*default=*/false)) {
4632 EH.NoUnwindC = true;
4638 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
4639 ArgStringList &CmdArgs,
4640 codegenoptions::DebugInfoKind *DebugInfoKind,
4641 bool *EmitCodeView) const {
4642 unsigned RTOptionID = options::OPT__SLASH_MT;
4644 if (Args.hasArg(options::OPT__SLASH_LDd))
4645 // The /LDd option implies /MTd. The dependent lib part can be overridden,
4646 // but defining _DEBUG is sticky.
4647 RTOptionID = options::OPT__SLASH_MTd;
4649 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
4650 RTOptionID = A->getOption().getID();
4652 StringRef FlagForCRT;
4653 switch (RTOptionID) {
4654 case options::OPT__SLASH_MD:
4655 if (Args.hasArg(options::OPT__SLASH_LDd))
4656 CmdArgs.push_back("-D_DEBUG");
4657 CmdArgs.push_back("-D_MT");
4658 CmdArgs.push_back("-D_DLL");
4659 FlagForCRT = "--dependent-lib=msvcrt";
4661 case options::OPT__SLASH_MDd:
4662 CmdArgs.push_back("-D_DEBUG");
4663 CmdArgs.push_back("-D_MT");
4664 CmdArgs.push_back("-D_DLL");
4665 FlagForCRT = "--dependent-lib=msvcrtd";
4667 case options::OPT__SLASH_MT:
4668 if (Args.hasArg(options::OPT__SLASH_LDd))
4669 CmdArgs.push_back("-D_DEBUG");
4670 CmdArgs.push_back("-D_MT");
4671 CmdArgs.push_back("-flto-visibility-public-std");
4672 FlagForCRT = "--dependent-lib=libcmt";
4674 case options::OPT__SLASH_MTd:
4675 CmdArgs.push_back("-D_DEBUG");
4676 CmdArgs.push_back("-D_MT");
4677 CmdArgs.push_back("-flto-visibility-public-std");
4678 FlagForCRT = "--dependent-lib=libcmtd";
4681 llvm_unreachable("Unexpected option ID.");
4684 if (Args.hasArg(options::OPT__SLASH_Zl)) {
4685 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
4687 CmdArgs.push_back(FlagForCRT.data());
4689 // This provides POSIX compatibility (maps 'open' to '_open'), which most
4690 // users want. The /Za flag to cl.exe turns this off, but it's not
4691 // implemented in clang.
4692 CmdArgs.push_back("--dependent-lib=oldnames");
4695 // Both /showIncludes and /E (and /EP) write to stdout. Allowing both
4696 // would produce interleaved output, so ignore /showIncludes in such cases.
4697 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_EP))
4698 if (Arg *A = Args.getLastArg(options::OPT_show_includes))
4699 A->render(Args, CmdArgs);
4701 // This controls whether or not we emit RTTI data for polymorphic types.
4702 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
4704 CmdArgs.push_back("-fno-rtti-data");
4706 // This controls whether or not we emit stack-protector instrumentation.
4707 // In MSVC, Buffer Security Check (/GS) is on by default.
4708 if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
4709 /*default=*/true)) {
4710 CmdArgs.push_back("-stack-protector");
4711 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
4714 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
4715 if (Arg *DebugInfoArg =
4716 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
4717 options::OPT_gline_tables_only)) {
4718 *EmitCodeView = true;
4719 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
4720 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
4722 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
4723 CmdArgs.push_back("-gcodeview");
4725 *EmitCodeView = false;
4728 const Driver &D = getToolChain().getDriver();
4729 EHFlags EH = parseClangCLEHFlags(D, Args);
4730 if (EH.Synch || EH.Asynch) {
4731 if (types::isCXX(InputType))
4732 CmdArgs.push_back("-fcxx-exceptions");
4733 CmdArgs.push_back("-fexceptions");
4735 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
4736 CmdArgs.push_back("-fexternc-nounwind");
4738 // /EP should expand to -E -P.
4739 if (Args.hasArg(options::OPT__SLASH_EP)) {
4740 CmdArgs.push_back("-E");
4741 CmdArgs.push_back("-P");
4744 unsigned VolatileOptionID;
4745 if (getToolChain().getArch() == llvm::Triple::x86_64 ||
4746 getToolChain().getArch() == llvm::Triple::x86)
4747 VolatileOptionID = options::OPT__SLASH_volatile_ms;
4749 VolatileOptionID = options::OPT__SLASH_volatile_iso;
4751 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
4752 VolatileOptionID = A->getOption().getID();
4754 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
4755 CmdArgs.push_back("-fms-volatile");
4757 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
4758 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
4759 if (MostGeneralArg && BestCaseArg)
4760 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
4761 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
4763 if (MostGeneralArg) {
4764 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
4765 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
4766 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
4768 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
4769 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
4770 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
4771 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
4772 << FirstConflict->getAsString(Args)
4773 << SecondConflict->getAsString(Args);
4776 CmdArgs.push_back("-fms-memptr-rep=single");
4777 else if (MultipleArg)
4778 CmdArgs.push_back("-fms-memptr-rep=multiple");
4780 CmdArgs.push_back("-fms-memptr-rep=virtual");
4783 if (Args.getLastArg(options::OPT__SLASH_Gd))
4784 CmdArgs.push_back("-fdefault-calling-conv=cdecl");
4785 else if (Args.getLastArg(options::OPT__SLASH_Gr))
4786 CmdArgs.push_back("-fdefault-calling-conv=fastcall");
4787 else if (Args.getLastArg(options::OPT__SLASH_Gz))
4788 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
4789 else if (Args.getLastArg(options::OPT__SLASH_Gv))
4790 CmdArgs.push_back("-fdefault-calling-conv=vectorcall");
4792 if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
4793 A->render(Args, CmdArgs);
4795 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
4796 CmdArgs.push_back("-fdiagnostics-format");
4797 if (Args.hasArg(options::OPT__SLASH_fallback))
4798 CmdArgs.push_back("msvc-fallback");
4800 CmdArgs.push_back("msvc");
4804 visualstudio::Compiler *Clang::getCLFallback() const {
4806 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
4807 return CLFallback.get();
4811 const char *Clang::getBaseInputName(const ArgList &Args,
4812 const InputInfo &Input) {
4813 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
4816 const char *Clang::getBaseInputStem(const ArgList &Args,
4817 const InputInfoList &Inputs) {
4818 const char *Str = getBaseInputName(Args, Inputs[0]);
4820 if (const char *End = strrchr(Str, '.'))
4821 return Args.MakeArgString(std::string(Str, End));
4826 const char *Clang::getDependencyFileName(const ArgList &Args,
4827 const InputInfoList &Inputs) {
4828 // FIXME: Think about this more.
4831 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
4832 std::string Str(OutputOpt->getValue());
4833 Res = Str.substr(0, Str.rfind('.'));
4835 Res = getBaseInputStem(Args, Inputs);
4837 return Args.MakeArgString(Res + ".d");
4842 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
4843 ArgStringList &CmdArgs) const {
4846 const llvm::Triple &Triple = getToolChain().getTriple();
4847 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
4849 CmdArgs.push_back("-target-abi");
4850 CmdArgs.push_back(ABIName.data());
4853 void ClangAs::AddX86TargetArgs(const ArgList &Args,
4854 ArgStringList &CmdArgs) const {
4855 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
4856 StringRef Value = A->getValue();
4857 if (Value == "intel" || Value == "att") {
4858 CmdArgs.push_back("-mllvm");
4859 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
4861 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
4862 << A->getOption().getName() << Value;
4867 void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
4868 const InputInfo &Output, const InputInfoList &Inputs,
4869 const ArgList &Args,
4870 const char *LinkingOutput) const {
4871 ArgStringList CmdArgs;
4873 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
4874 const InputInfo &Input = Inputs[0];
4876 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
4877 const std::string &TripleStr = Triple.getTriple();
4879 // Don't warn about "clang -w -c foo.s"
4880 Args.ClaimAllArgs(options::OPT_w);
4881 // and "clang -emit-llvm -c foo.s"
4882 Args.ClaimAllArgs(options::OPT_emit_llvm);
4884 claimNoWarnArgs(Args);
4886 // Invoke ourselves in -cc1as mode.
4888 // FIXME: Implement custom jobs for internal actions.
4889 CmdArgs.push_back("-cc1as");
4891 // Add the "effective" target triple.
4892 CmdArgs.push_back("-triple");
4893 CmdArgs.push_back(Args.MakeArgString(TripleStr));
4895 // Set the output mode, we currently only expect to be used as a real
4897 CmdArgs.push_back("-filetype");
4898 CmdArgs.push_back("obj");
4900 // Set the main file name, so that debug info works even with
4901 // -save-temps or preprocessed assembly.
4902 CmdArgs.push_back("-main-file-name");
4903 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
4905 // Add the target cpu
4906 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
4908 CmdArgs.push_back("-target-cpu");
4909 CmdArgs.push_back(Args.MakeArgString(CPU));
4912 // Add the target features
4913 getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
4915 // Ignore explicit -force_cpusubtype_ALL option.
4916 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
4918 // Pass along any -I options so we get proper .include search paths.
4919 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
4921 // Determine the original source input.
4922 const Action *SourceAction = &JA;
4923 while (SourceAction->getKind() != Action::InputClass) {
4924 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
4925 SourceAction = SourceAction->getInputs()[0];
4928 // Forward -g and handle debug info related flags, assuming we are dealing
4929 // with an actual assembly file.
4930 bool WantDebug = false;
4931 unsigned DwarfVersion = 0;
4932 Args.ClaimAllArgs(options::OPT_g_Group);
4933 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
4934 WantDebug = !A->getOption().matches(options::OPT_g0) &&
4935 !A->getOption().matches(options::OPT_ggdb0);
4937 DwarfVersion = DwarfVersionNum(A->getSpelling());
4939 if (DwarfVersion == 0)
4940 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
4942 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
4944 if (SourceAction->getType() == types::TY_Asm ||
4945 SourceAction->getType() == types::TY_PP_Asm) {
4946 // You might think that it would be ok to set DebugInfoKind outside of
4947 // the guard for source type, however there is a test which asserts
4948 // that some assembler invocation receives no -debug-info-kind,
4949 // and it's not clear whether that test is just overly restrictive.
4950 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
4951 : codegenoptions::NoDebugInfo);
4952 // Add the -fdebug-compilation-dir flag if needed.
4953 addDebugCompDirArg(Args, CmdArgs);
4955 // Set the AT_producer to the clang version when using the integrated
4956 // assembler on assembly source files.
4957 CmdArgs.push_back("-dwarf-debug-producer");
4958 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
4960 // And pass along -I options
4961 Args.AddAllArgs(CmdArgs, options::OPT_I);
4963 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
4964 llvm::DebuggerKind::Default);
4966 // Handle -fPIC et al -- the relocation-model affects the assembler
4967 // for some targets.
4968 llvm::Reloc::Model RelocationModel;
4971 std::tie(RelocationModel, PICLevel, IsPIE) =
4972 ParsePICArgs(getToolChain(), Args);
4974 const char *RMName = RelocationModelName(RelocationModel);
4976 CmdArgs.push_back("-mrelocation-model");
4977 CmdArgs.push_back(RMName);
4980 // Optionally embed the -cc1as level arguments into the debug info, for build
4982 if (getToolChain().UseDwarfDebugFlags()) {
4983 ArgStringList OriginalArgs;
4984 for (const auto &Arg : Args)
4985 Arg->render(Args, OriginalArgs);
4987 SmallString<256> Flags;
4988 const char *Exec = getToolChain().getDriver().getClangProgramPath();
4990 for (const char *OriginalArg : OriginalArgs) {
4991 SmallString<128> EscapedArg;
4992 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
4994 Flags += EscapedArg;
4996 CmdArgs.push_back("-dwarf-debug-flags");
4997 CmdArgs.push_back(Args.MakeArgString(Flags));
5000 // FIXME: Add -static support, once we have it.
5002 // Add target specific flags.
5003 switch (getToolChain().getArch()) {
5007 case llvm::Triple::mips:
5008 case llvm::Triple::mipsel:
5009 case llvm::Triple::mips64:
5010 case llvm::Triple::mips64el:
5011 AddMIPSTargetArgs(Args, CmdArgs);
5014 case llvm::Triple::x86:
5015 case llvm::Triple::x86_64:
5016 AddX86TargetArgs(Args, CmdArgs);
5019 case llvm::Triple::arm:
5020 case llvm::Triple::armeb:
5021 case llvm::Triple::thumb:
5022 case llvm::Triple::thumbeb:
5023 // This isn't in AddARMTargetArgs because we want to do this for assembly
5025 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
5026 options::OPT_mno_default_build_attributes, true)) {
5027 CmdArgs.push_back("-mllvm");
5028 CmdArgs.push_back("-arm-add-build-attributes");
5033 // Consume all the warning flags. Usually this would be handled more
5034 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
5035 // doesn't handle that so rather than warning about unused flags that are
5036 // actually used, we'll lie by omission instead.
5037 // FIXME: Stop lying and consume only the appropriate driver flags
5038 Args.ClaimAllArgs(options::OPT_W_Group);
5040 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
5041 getToolChain().getDriver());
5043 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
5045 assert(Output.isFilename() && "Unexpected lipo output.");
5046 CmdArgs.push_back("-o");
5047 CmdArgs.push_back(Output.getFilename());
5049 assert(Input.isFilename() && "Invalid input.");
5050 CmdArgs.push_back(Input.getFilename());
5052 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5053 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5055 // Handle the debug info splitting at object creation time if we're
5056 // creating an object.
5057 // TODO: Currently only works on linux with newer objcopy.
5058 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
5059 getToolChain().getTriple().isOSLinux())
5060 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
5061 SplitDebugName(Args, Input));
5064 // Begin OffloadBundler
5066 void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
5067 const InputInfo &Output,
5068 const InputInfoList &Inputs,
5069 const llvm::opt::ArgList &TCArgs,
5070 const char *LinkingOutput) const {
5071 // The version with only one output is expected to refer to a bundling job.
5072 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
5074 // The bundling command looks like this:
5075 // clang-offload-bundler -type=bc
5076 // -targets=host-triple,openmp-triple1,openmp-triple2
5077 // -outputs=input_file
5078 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5080 ArgStringList CmdArgs;
5083 CmdArgs.push_back(TCArgs.MakeArgString(
5084 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
5086 assert(JA.getInputs().size() == Inputs.size() &&
5087 "Not have inputs for all dependence actions??");
5090 SmallString<128> Triples;
5091 Triples += "-targets=";
5092 for (unsigned I = 0; I < Inputs.size(); ++I) {
5096 Action::OffloadKind CurKind = Action::OFK_Host;
5097 const ToolChain *CurTC = &getToolChain();
5098 const Action *CurDep = JA.getInputs()[I];
5100 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
5101 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
5102 CurKind = A->getOffloadingDeviceKind();
5106 Triples += Action::GetOffloadKindName(CurKind);
5108 Triples += CurTC->getTriple().normalize();
5110 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5112 // Get bundled file command.
5114 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
5116 // Get unbundled files command.
5117 SmallString<128> UB;
5119 for (unsigned I = 0; I < Inputs.size(); ++I) {
5122 UB += Inputs[I].getFilename();
5124 CmdArgs.push_back(TCArgs.MakeArgString(UB));
5126 // All the inputs are encoded as commands.
5127 C.addCommand(llvm::make_unique<Command>(
5129 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5133 void OffloadBundler::ConstructJobMultipleOutputs(
5134 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
5135 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
5136 const char *LinkingOutput) const {
5137 // The version with multiple outputs is expected to refer to a unbundling job.
5138 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
5140 // The unbundling command looks like this:
5141 // clang-offload-bundler -type=bc
5142 // -targets=host-triple,openmp-triple1,openmp-triple2
5143 // -inputs=input_file
5144 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5147 ArgStringList CmdArgs;
5149 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
5150 InputInfo Input = Inputs.front();
5153 CmdArgs.push_back(TCArgs.MakeArgString(
5154 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
5157 SmallString<128> Triples;
5158 Triples += "-targets=";
5159 auto DepInfo = UA.getDependentActionsInfo();
5160 for (unsigned I = 0; I < DepInfo.size(); ++I) {
5164 auto &Dep = DepInfo[I];
5165 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
5167 Triples += Dep.DependentToolChain->getTriple().normalize();
5170 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5172 // Get bundled file command.
5174 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
5176 // Get unbundled files command.
5177 SmallString<128> UB;
5179 for (unsigned I = 0; I < Outputs.size(); ++I) {
5182 UB += Outputs[I].getFilename();
5184 CmdArgs.push_back(TCArgs.MakeArgString(UB));
5185 CmdArgs.push_back("-unbundle");
5187 // All the inputs are encoded as commands.
5188 C.addCommand(llvm::make_unique<Command>(
5190 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),