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/RISCV.h"
16 #include "Arch/Sparc.h"
17 #include "Arch/SystemZ.h"
20 #include "CommonArgs.h"
23 #include "InputInfo.h"
25 #include "clang/Basic/CharInfo.h"
26 #include "clang/Basic/LangOptions.h"
27 #include "clang/Basic/ObjCRuntime.h"
28 #include "clang/Basic/Version.h"
29 #include "clang/Driver/Distro.h"
30 #include "clang/Driver/DriverDiagnostic.h"
31 #include "clang/Driver/Options.h"
32 #include "clang/Driver/SanitizerArgs.h"
33 #include "clang/Driver/XRayArgs.h"
34 #include "llvm/ADT/StringExtras.h"
35 #include "llvm/Config/llvm-config.h"
36 #include "llvm/Option/ArgList.h"
37 #include "llvm/Support/CodeGen.h"
38 #include "llvm/Support/Compression.h"
39 #include "llvm/Support/FileSystem.h"
40 #include "llvm/Support/Path.h"
41 #include "llvm/Support/Process.h"
42 #include "llvm/Support/TargetParser.h"
43 #include "llvm/Support/YAMLParser.h"
46 #include <unistd.h> // For getuid().
49 using namespace clang::driver;
50 using namespace clang::driver::tools;
51 using namespace clang;
52 using namespace llvm::opt;
54 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
56 Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
57 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
58 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
59 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
60 << A->getBaseArg().getAsString(Args)
61 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
66 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
67 // In gcc, only ARM checks this, but it seems reasonable to check universally.
68 if (Args.hasArg(options::OPT_static))
70 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
71 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
75 // Add backslashes to escape spaces and other backslashes.
76 // This is used for the space-separated argument list specified with
77 // the -dwarf-debug-flags option.
78 static void EscapeSpacesAndBackslashes(const char *Arg,
79 SmallVectorImpl<char> &Res) {
93 // Quote target names for inclusion in GNU Make dependency files.
94 // Only the characters '$', '#', ' ', '\t' are quoted.
95 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
96 for (unsigned i = 0, e = Target.size(); i != e; ++i) {
100 // Escape the preceding backslashes
101 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
104 // Escape the space/tab
117 Res.push_back(Target[i]);
121 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
122 /// offloading tool chain that is associated with the current action \a JA.
124 forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
125 const ToolChain &RegularToolChain,
126 llvm::function_ref<void(const ToolChain &)> Work) {
127 // Apply Work on the current/regular tool chain.
128 Work(RegularToolChain);
130 // Apply Work on all the offloading tool chains associated with the current
132 if (JA.isHostOffloading(Action::OFK_Cuda))
133 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
134 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
135 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
136 else if (JA.isHostOffloading(Action::OFK_HIP))
137 Work(*C.getSingleOffloadToolChain<Action::OFK_HIP>());
138 else if (JA.isDeviceOffloading(Action::OFK_HIP))
139 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
141 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
142 auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
143 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
145 } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
146 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
149 // TODO: Add support for other offloading programming models here.
153 /// This is a helper function for validating the optional refinement step
154 /// parameter in reciprocal argument strings. Return false if there is an error
155 /// parsing the refinement step. Otherwise, return true and set the Position
156 /// of the refinement step in the input string.
157 static bool getRefinementStep(StringRef In, const Driver &D,
158 const Arg &A, size_t &Position) {
159 const char RefinementStepToken = ':';
160 Position = In.find(RefinementStepToken);
161 if (Position != StringRef::npos) {
162 StringRef Option = A.getOption().getName();
163 StringRef RefStep = In.substr(Position + 1);
164 // Allow exactly one numeric character for the additional refinement
165 // step parameter. This is reasonable for all currently-supported
166 // operations and architectures because we would expect that a larger value
167 // of refinement steps would cause the estimate "optimization" to
168 // under-perform the native operation. Also, if the estimate does not
169 // converge quickly, it probably will not ever converge, so further
170 // refinement steps will not produce a better answer.
171 if (RefStep.size() != 1) {
172 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
175 char RefStepChar = RefStep[0];
176 if (RefStepChar < '0' || RefStepChar > '9') {
177 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
184 /// The -mrecip flag requires processing of many optional parameters.
185 static void ParseMRecip(const Driver &D, const ArgList &Args,
186 ArgStringList &OutStrings) {
187 StringRef DisabledPrefixIn = "!";
188 StringRef DisabledPrefixOut = "!";
189 StringRef EnabledPrefixOut = "";
190 StringRef Out = "-mrecip=";
192 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
196 unsigned NumOptions = A->getNumValues();
197 if (NumOptions == 0) {
198 // No option is the same as "all".
199 OutStrings.push_back(Args.MakeArgString(Out + "all"));
203 // Pass through "all", "none", or "default" with an optional refinement step.
204 if (NumOptions == 1) {
205 StringRef Val = A->getValue(0);
207 if (!getRefinementStep(Val, D, *A, RefStepLoc))
209 StringRef ValBase = Val.slice(0, RefStepLoc);
210 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
211 OutStrings.push_back(Args.MakeArgString(Out + Val));
216 // Each reciprocal type may be enabled or disabled individually.
217 // Check each input value for validity, concatenate them all back together,
220 llvm::StringMap<bool> OptionStrings;
221 OptionStrings.insert(std::make_pair("divd", false));
222 OptionStrings.insert(std::make_pair("divf", false));
223 OptionStrings.insert(std::make_pair("vec-divd", false));
224 OptionStrings.insert(std::make_pair("vec-divf", false));
225 OptionStrings.insert(std::make_pair("sqrtd", false));
226 OptionStrings.insert(std::make_pair("sqrtf", false));
227 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
228 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
230 for (unsigned i = 0; i != NumOptions; ++i) {
231 StringRef Val = A->getValue(i);
233 bool IsDisabled = Val.startswith(DisabledPrefixIn);
234 // Ignore the disablement token for string matching.
239 if (!getRefinementStep(Val, D, *A, RefStep))
242 StringRef ValBase = Val.slice(0, RefStep);
243 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
244 if (OptionIter == OptionStrings.end()) {
245 // Try again specifying float suffix.
246 OptionIter = OptionStrings.find(ValBase.str() + 'f');
247 if (OptionIter == OptionStrings.end()) {
248 // The input name did not match any known option string.
249 D.Diag(diag::err_drv_unknown_argument) << Val;
252 // The option was specified without a float or double suffix.
253 // Make sure that the double entry was not already specified.
254 // The float entry will be checked below.
255 if (OptionStrings[ValBase.str() + 'd']) {
256 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
261 if (OptionIter->second == true) {
262 // Duplicate option specified.
263 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
267 // Mark the matched option as found. Do not allow duplicate specifiers.
268 OptionIter->second = true;
270 // If the precision was not specified, also mark the double entry as found.
271 if (ValBase.back() != 'f' && ValBase.back() != 'd')
272 OptionStrings[ValBase.str() + 'd'] = true;
274 // Build the output string.
275 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
276 Out = Args.MakeArgString(Out + Prefix + Val);
277 if (i != NumOptions - 1)
278 Out = Args.MakeArgString(Out + ",");
281 OutStrings.push_back(Args.MakeArgString(Out));
284 /// The -mprefer-vector-width option accepts either a positive integer
285 /// or the string "none".
286 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
287 ArgStringList &CmdArgs) {
288 Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
292 StringRef Value = A->getValue();
293 if (Value == "none") {
294 CmdArgs.push_back("-mprefer-vector-width=none");
297 if (Value.getAsInteger(10, Width)) {
298 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
301 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
305 static void getWebAssemblyTargetFeatures(const ArgList &Args,
306 std::vector<StringRef> &Features) {
307 handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
310 static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
311 const ArgList &Args, ArgStringList &CmdArgs,
313 const Driver &D = TC.getDriver();
314 std::vector<StringRef> Features;
315 switch (Triple.getArch()) {
318 case llvm::Triple::mips:
319 case llvm::Triple::mipsel:
320 case llvm::Triple::mips64:
321 case llvm::Triple::mips64el:
322 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
325 case llvm::Triple::arm:
326 case llvm::Triple::armeb:
327 case llvm::Triple::thumb:
328 case llvm::Triple::thumbeb:
329 arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
332 case llvm::Triple::ppc:
333 case llvm::Triple::ppc64:
334 case llvm::Triple::ppc64le:
335 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
337 case llvm::Triple::riscv32:
338 case llvm::Triple::riscv64:
339 riscv::getRISCVTargetFeatures(D, Args, Features);
341 case llvm::Triple::systemz:
342 systemz::getSystemZTargetFeatures(Args, Features);
344 case llvm::Triple::aarch64:
345 case llvm::Triple::aarch64_be:
346 aarch64::getAArch64TargetFeatures(D, Triple, Args, Features);
348 case llvm::Triple::x86:
349 case llvm::Triple::x86_64:
350 x86::getX86TargetFeatures(D, Triple, Args, Features);
352 case llvm::Triple::hexagon:
353 hexagon::getHexagonTargetFeatures(D, Args, Features);
355 case llvm::Triple::wasm32:
356 case llvm::Triple::wasm64:
357 getWebAssemblyTargetFeatures(Args, Features);
359 case llvm::Triple::sparc:
360 case llvm::Triple::sparcel:
361 case llvm::Triple::sparcv9:
362 sparc::getSparcTargetFeatures(D, Args, Features);
364 case llvm::Triple::r600:
365 case llvm::Triple::amdgcn:
366 amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
368 case llvm::Triple::msp430:
369 msp430::getMSP430TargetFeatures(D, Args, Features);
372 // Find the last of each feature.
373 llvm::StringMap<unsigned> LastOpt;
374 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
375 StringRef Name = Features[I];
376 assert(Name[0] == '-' || Name[0] == '+');
377 LastOpt[Name.drop_front(1)] = I;
380 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
381 // If this feature was overridden, ignore it.
382 StringRef Name = Features[I];
383 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
384 assert(LastI != LastOpt.end());
385 unsigned Last = LastI->second;
389 CmdArgs.push_back("-target-feature");
390 CmdArgs.push_back(Name.data());
395 shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
396 const llvm::Triple &Triple) {
397 // We use the zero-cost exception tables for Objective-C if the non-fragile
398 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
400 if (runtime.isNonFragile())
403 if (!Triple.isMacOSX())
406 return (!Triple.isMacOSXVersionLT(10, 5) &&
407 (Triple.getArch() == llvm::Triple::x86_64 ||
408 Triple.getArch() == llvm::Triple::arm));
411 /// Adds exception related arguments to the driver command arguments. There's a
412 /// master flag, -fexceptions and also language specific flags to enable/disable
413 /// C++ and Objective-C exceptions. This makes it possible to for example
414 /// disable C++ exceptions but enable Objective-C exceptions.
415 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
416 const ToolChain &TC, bool KernelOrKext,
417 const ObjCRuntime &objcRuntime,
418 ArgStringList &CmdArgs) {
419 const llvm::Triple &Triple = TC.getTriple();
422 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
423 // arguments now to avoid warnings about unused arguments.
424 Args.ClaimAllArgs(options::OPT_fexceptions);
425 Args.ClaimAllArgs(options::OPT_fno_exceptions);
426 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
427 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
428 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
429 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
433 // See if the user explicitly enabled exceptions.
434 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
437 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
438 // is not necessarily sensible, but follows GCC.
439 if (types::isObjC(InputType) &&
440 Args.hasFlag(options::OPT_fobjc_exceptions,
441 options::OPT_fno_objc_exceptions, true)) {
442 CmdArgs.push_back("-fobjc-exceptions");
444 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
447 if (types::isCXX(InputType)) {
448 // Disable C++ EH by default on XCore and PS4.
449 bool CXXExceptionsEnabled =
450 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
451 Arg *ExceptionArg = Args.getLastArg(
452 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
453 options::OPT_fexceptions, options::OPT_fno_exceptions);
455 CXXExceptionsEnabled =
456 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
457 ExceptionArg->getOption().matches(options::OPT_fexceptions);
459 if (CXXExceptionsEnabled) {
460 CmdArgs.push_back("-fcxx-exceptions");
467 CmdArgs.push_back("-fexceptions");
470 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
472 if (TC.getTriple().isOSDarwin()) {
473 // The native darwin assembler doesn't support the linker_option directives,
474 // so we disable them if we think the .s file will be passed to it.
475 Default = TC.useIntegratedAs();
477 return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
481 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
482 const ToolChain &TC) {
483 bool UseDwarfDirectory =
484 Args.hasFlag(options::OPT_fdwarf_directory_asm,
485 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
486 return !UseDwarfDirectory;
489 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
490 // to the corresponding DebugInfoKind.
491 static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
492 assert(A.getOption().matches(options::OPT_gN_Group) &&
493 "Not a -g option that specifies a debug-info level");
494 if (A.getOption().matches(options::OPT_g0) ||
495 A.getOption().matches(options::OPT_ggdb0))
496 return codegenoptions::NoDebugInfo;
497 if (A.getOption().matches(options::OPT_gline_tables_only) ||
498 A.getOption().matches(options::OPT_ggdb1))
499 return codegenoptions::DebugLineTablesOnly;
500 if (A.getOption().matches(options::OPT_gline_directives_only))
501 return codegenoptions::DebugDirectivesOnly;
502 return codegenoptions::LimitedDebugInfo;
505 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
506 switch (Triple.getArch()){
509 case llvm::Triple::arm:
510 case llvm::Triple::thumb:
511 // ARM Darwin targets require a frame pointer to be always present to aid
512 // offline debugging via backtraces.
513 return Triple.isOSDarwin();
517 static bool useFramePointerForTargetByDefault(const ArgList &Args,
518 const llvm::Triple &Triple) {
519 switch (Triple.getArch()) {
520 case llvm::Triple::xcore:
521 case llvm::Triple::wasm32:
522 case llvm::Triple::wasm64:
523 // XCore never wants frame pointers, regardless of OS.
524 // WebAssembly never wants frame pointers.
526 case llvm::Triple::riscv32:
527 case llvm::Triple::riscv64:
528 return !areOptimizationsEnabled(Args);
533 if (Triple.isOSNetBSD()) {
534 return !areOptimizationsEnabled(Args);
537 if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
539 switch (Triple.getArch()) {
540 // Don't use a frame pointer on linux if optimizing for certain targets.
541 case llvm::Triple::mips64:
542 case llvm::Triple::mips64el:
543 case llvm::Triple::mips:
544 case llvm::Triple::mipsel:
545 case llvm::Triple::ppc:
546 case llvm::Triple::ppc64:
547 case llvm::Triple::ppc64le:
548 case llvm::Triple::systemz:
549 case llvm::Triple::x86:
550 case llvm::Triple::x86_64:
551 return !areOptimizationsEnabled(Args);
557 if (Triple.isOSWindows()) {
558 switch (Triple.getArch()) {
559 case llvm::Triple::x86:
560 return !areOptimizationsEnabled(Args);
561 case llvm::Triple::x86_64:
562 return Triple.isOSBinFormatMachO();
563 case llvm::Triple::arm:
564 case llvm::Triple::thumb:
565 // Windows on ARM builds with FPO disabled to aid fast stack walking
568 // All other supported Windows ISAs use xdata unwind information, so frame
569 // pointers are not generally useful.
577 static bool shouldUseFramePointer(const ArgList &Args,
578 const llvm::Triple &Triple) {
579 if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
580 options::OPT_fomit_frame_pointer))
581 return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
582 mustUseNonLeafFramePointerForTarget(Triple);
584 if (Args.hasArg(options::OPT_pg))
587 return useFramePointerForTargetByDefault(Args, Triple);
590 static bool shouldUseLeafFramePointer(const ArgList &Args,
591 const llvm::Triple &Triple) {
592 if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
593 options::OPT_momit_leaf_frame_pointer))
594 return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
596 if (Args.hasArg(options::OPT_pg))
599 if (Triple.isPS4CPU())
602 return useFramePointerForTargetByDefault(Args, Triple);
605 /// Add a CC1 option to specify the debug compilation directory.
606 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
607 SmallString<128> cwd;
608 if (!llvm::sys::fs::current_path(cwd)) {
609 CmdArgs.push_back("-fdebug-compilation-dir");
610 CmdArgs.push_back(Args.MakeArgString(cwd));
614 /// Add a CC1 and CC1AS option to specify the debug file path prefix map.
615 static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
616 for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
617 StringRef Map = A->getValue();
618 if (Map.find('=') == StringRef::npos)
619 D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
621 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
626 /// Vectorize at all optimization levels greater than 1 except for -Oz.
627 /// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
628 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
629 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
630 if (A->getOption().matches(options::OPT_O4) ||
631 A->getOption().matches(options::OPT_Ofast))
634 if (A->getOption().matches(options::OPT_O0))
637 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
640 StringRef S(A->getValue());
644 // Don't vectorize -Oz, unless it's the slp vectorizer.
648 unsigned OptLevel = 0;
649 if (S.getAsInteger(10, OptLevel))
658 /// Add -x lang to \p CmdArgs for \p Input.
659 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
660 ArgStringList &CmdArgs) {
661 // When using -verify-pch, we don't want to provide the type
662 // 'precompiled-header' if it was inferred from the file extension
663 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
666 CmdArgs.push_back("-x");
667 if (Args.hasArg(options::OPT_rewrite_objc))
668 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
670 // Map the driver type to the frontend type. This is mostly an identity
671 // mapping, except that the distinction between module interface units
672 // and other source files does not exist at the frontend layer.
673 const char *ClangType;
674 switch (Input.getType()) {
675 case types::TY_CXXModule:
678 case types::TY_PP_CXXModule:
679 ClangType = "c++-cpp-output";
682 ClangType = types::getTypeName(Input.getType());
685 CmdArgs.push_back(ClangType);
689 static void appendUserToPath(SmallVectorImpl<char> &Result) {
691 const char *Username = getenv("LOGNAME");
693 const char *Username = getenv("USERNAME");
696 // Validate that LoginName can be used in a path, and get its length.
698 for (const char *P = Username; *P; ++P, ++Len) {
699 if (!clang::isAlphanumeric(*P) && *P != '_') {
705 if (Username && Len > 0) {
706 Result.append(Username, Username + Len);
711 // Fallback to user id.
713 std::string UID = llvm::utostr(getuid());
715 // FIXME: Windows seems to have an 'SID' that might work.
716 std::string UID = "9999";
718 Result.append(UID.begin(), UID.end());
721 static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
722 const InputInfo &Output, const ArgList &Args,
723 ArgStringList &CmdArgs) {
725 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
726 options::OPT_fprofile_generate_EQ,
727 options::OPT_fno_profile_generate);
728 if (PGOGenerateArg &&
729 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
730 PGOGenerateArg = nullptr;
732 auto *ProfileGenerateArg = Args.getLastArg(
733 options::OPT_fprofile_instr_generate,
734 options::OPT_fprofile_instr_generate_EQ,
735 options::OPT_fno_profile_instr_generate);
736 if (ProfileGenerateArg &&
737 ProfileGenerateArg->getOption().matches(
738 options::OPT_fno_profile_instr_generate))
739 ProfileGenerateArg = nullptr;
741 if (PGOGenerateArg && ProfileGenerateArg)
742 D.Diag(diag::err_drv_argument_not_allowed_with)
743 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
745 auto *ProfileUseArg = getLastProfileUseArg(Args);
747 if (PGOGenerateArg && ProfileUseArg)
748 D.Diag(diag::err_drv_argument_not_allowed_with)
749 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
751 if (ProfileGenerateArg && ProfileUseArg)
752 D.Diag(diag::err_drv_argument_not_allowed_with)
753 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
755 if (ProfileGenerateArg) {
756 if (ProfileGenerateArg->getOption().matches(
757 options::OPT_fprofile_instr_generate_EQ))
758 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
759 ProfileGenerateArg->getValue()));
760 // The default is to use Clang Instrumentation.
761 CmdArgs.push_back("-fprofile-instrument=clang");
764 if (PGOGenerateArg) {
765 CmdArgs.push_back("-fprofile-instrument=llvm");
766 if (PGOGenerateArg->getOption().matches(
767 options::OPT_fprofile_generate_EQ)) {
768 SmallString<128> Path(PGOGenerateArg->getValue());
769 llvm::sys::path::append(Path, "default_%m.profraw");
771 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
776 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
777 CmdArgs.push_back(Args.MakeArgString(
778 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
779 else if ((ProfileUseArg->getOption().matches(
780 options::OPT_fprofile_use_EQ) ||
781 ProfileUseArg->getOption().matches(
782 options::OPT_fprofile_instr_use))) {
783 SmallString<128> Path(
784 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
785 if (Path.empty() || llvm::sys::fs::is_directory(Path))
786 llvm::sys::path::append(Path, "default.profdata");
788 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
792 if (Args.hasArg(options::OPT_ftest_coverage) ||
793 Args.hasArg(options::OPT_coverage))
794 CmdArgs.push_back("-femit-coverage-notes");
795 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
797 Args.hasArg(options::OPT_coverage))
798 CmdArgs.push_back("-femit-coverage-data");
800 if (Args.hasFlag(options::OPT_fcoverage_mapping,
801 options::OPT_fno_coverage_mapping, false)) {
802 if (!ProfileGenerateArg)
803 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
804 << "-fcoverage-mapping"
805 << "-fprofile-instr-generate";
807 CmdArgs.push_back("-fcoverage-mapping");
810 if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {
811 auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
812 if (!Args.hasArg(options::OPT_coverage))
813 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
814 << "-fprofile-exclude-files="
817 StringRef v = Arg->getValue();
819 Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));
822 if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {
823 auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
824 if (!Args.hasArg(options::OPT_coverage))
825 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
826 << "-fprofile-filter-files="
829 StringRef v = Arg->getValue();
830 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));
833 if (C.getArgs().hasArg(options::OPT_c) ||
834 C.getArgs().hasArg(options::OPT_S)) {
835 if (Output.isFilename()) {
836 CmdArgs.push_back("-coverage-notes-file");
837 SmallString<128> OutputFilename;
838 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
839 OutputFilename = FinalOutput->getValue();
841 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
842 SmallString<128> CoverageFilename = OutputFilename;
843 if (llvm::sys::path::is_relative(CoverageFilename)) {
844 SmallString<128> Pwd;
845 if (!llvm::sys::fs::current_path(Pwd)) {
846 llvm::sys::path::append(Pwd, CoverageFilename);
847 CoverageFilename.swap(Pwd);
850 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
851 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
853 // Leave -fprofile-dir= an unused argument unless .gcda emission is
854 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
855 // the flag used. There is no -fno-profile-dir, so the user has no
856 // targeted way to suppress the warning.
857 if (Args.hasArg(options::OPT_fprofile_arcs) ||
858 Args.hasArg(options::OPT_coverage)) {
859 CmdArgs.push_back("-coverage-data-file");
860 if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
861 CoverageFilename = FProfileDir->getValue();
862 llvm::sys::path::append(CoverageFilename, OutputFilename);
864 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
865 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
871 /// Check whether the given input tree contains any compilation actions.
872 static bool ContainsCompileAction(const Action *A) {
873 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
876 for (const auto &AI : A->inputs())
877 if (ContainsCompileAction(AI))
883 /// Check if -relax-all should be passed to the internal assembler.
884 /// This is done by default when compiling non-assembler source with -O0.
885 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
886 bool RelaxDefault = true;
888 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
889 RelaxDefault = A->getOption().matches(options::OPT_O0);
892 RelaxDefault = false;
893 for (const auto &Act : C.getActions()) {
894 if (ContainsCompileAction(Act)) {
901 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
905 // Extract the integer N from a string spelled "-dwarf-N", returning 0
906 // on mismatch. The StringRef input (rather than an Arg) allows
907 // for use by the "-Xassembler" option parser.
908 static unsigned DwarfVersionNum(StringRef ArgValue) {
909 return llvm::StringSwitch<unsigned>(ArgValue)
910 .Case("-gdwarf-2", 2)
911 .Case("-gdwarf-3", 3)
912 .Case("-gdwarf-4", 4)
913 .Case("-gdwarf-5", 5)
917 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
918 codegenoptions::DebugInfoKind DebugInfoKind,
919 unsigned DwarfVersion,
920 llvm::DebuggerKind DebuggerTuning) {
921 switch (DebugInfoKind) {
922 case codegenoptions::DebugDirectivesOnly:
923 CmdArgs.push_back("-debug-info-kind=line-directives-only");
925 case codegenoptions::DebugLineTablesOnly:
926 CmdArgs.push_back("-debug-info-kind=line-tables-only");
928 case codegenoptions::LimitedDebugInfo:
929 CmdArgs.push_back("-debug-info-kind=limited");
931 case codegenoptions::FullDebugInfo:
932 CmdArgs.push_back("-debug-info-kind=standalone");
937 if (DwarfVersion > 0)
939 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
940 switch (DebuggerTuning) {
941 case llvm::DebuggerKind::GDB:
942 CmdArgs.push_back("-debugger-tuning=gdb");
944 case llvm::DebuggerKind::LLDB:
945 CmdArgs.push_back("-debugger-tuning=lldb");
947 case llvm::DebuggerKind::SCE:
948 CmdArgs.push_back("-debugger-tuning=sce");
955 static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
956 const Driver &D, const ToolChain &TC) {
957 assert(A && "Expected non-nullptr argument.");
958 if (TC.supportsDebugInfoOption(A))
960 D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
961 << A->getAsString(Args) << TC.getTripleString();
965 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
966 ArgStringList &CmdArgs,
968 const ToolChain &TC) {
969 const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
972 if (checkDebugInfoOption(A, Args, D, TC)) {
973 if (A->getOption().getID() == options::OPT_gz) {
974 if (llvm::zlib::isAvailable())
975 CmdArgs.push_back("-compress-debug-sections");
977 D.Diag(diag::warn_debug_compression_unavailable);
981 StringRef Value = A->getValue();
982 if (Value == "none") {
983 CmdArgs.push_back("-compress-debug-sections=none");
984 } else if (Value == "zlib" || Value == "zlib-gnu") {
985 if (llvm::zlib::isAvailable()) {
987 Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
989 D.Diag(diag::warn_debug_compression_unavailable);
992 D.Diag(diag::err_drv_unsupported_option_argument)
993 << A->getOption().getName() << Value;
998 static const char *RelocationModelName(llvm::Reloc::Model Model) {
1000 case llvm::Reloc::Static:
1002 case llvm::Reloc::PIC_:
1004 case llvm::Reloc::DynamicNoPIC:
1005 return "dynamic-no-pic";
1006 case llvm::Reloc::ROPI:
1008 case llvm::Reloc::RWPI:
1010 case llvm::Reloc::ROPI_RWPI:
1013 llvm_unreachable("Unknown Reloc::Model kind");
1016 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
1017 const Driver &D, const ArgList &Args,
1018 ArgStringList &CmdArgs,
1019 const InputInfo &Output,
1020 const InputInfoList &Inputs) const {
1022 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
1024 CheckPreprocessingOptions(D, Args);
1026 Args.AddLastArg(CmdArgs, options::OPT_C);
1027 Args.AddLastArg(CmdArgs, options::OPT_CC);
1029 // Handle dependency file generation.
1030 if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
1031 (A = Args.getLastArg(options::OPT_MD)) ||
1032 (A = Args.getLastArg(options::OPT_MMD))) {
1033 // Determine the output location.
1034 const char *DepFile;
1035 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1036 DepFile = MF->getValue();
1037 C.addFailureResultFile(DepFile, &JA);
1038 } else if (Output.getType() == types::TY_Dependencies) {
1039 DepFile = Output.getFilename();
1040 } else if (A->getOption().matches(options::OPT_M) ||
1041 A->getOption().matches(options::OPT_MM)) {
1044 DepFile = getDependencyFileName(Args, Inputs);
1045 C.addFailureResultFile(DepFile, &JA);
1047 CmdArgs.push_back("-dependency-file");
1048 CmdArgs.push_back(DepFile);
1050 // Add a default target if one wasn't specified.
1051 if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
1052 const char *DepTarget;
1054 // If user provided -o, that is the dependency target, except
1055 // when we are only generating a dependency file.
1056 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1057 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1058 DepTarget = OutputOpt->getValue();
1060 // Otherwise derive from the base input.
1062 // FIXME: This should use the computed output file location.
1063 SmallString<128> P(Inputs[0].getBaseInput());
1064 llvm::sys::path::replace_extension(P, "o");
1065 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1068 if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1069 CmdArgs.push_back("-w");
1071 CmdArgs.push_back("-MT");
1072 SmallString<128> Quoted;
1073 QuoteTarget(DepTarget, Quoted);
1074 CmdArgs.push_back(Args.MakeArgString(Quoted));
1077 if (A->getOption().matches(options::OPT_M) ||
1078 A->getOption().matches(options::OPT_MD))
1079 CmdArgs.push_back("-sys-header-deps");
1080 if ((isa<PrecompileJobAction>(JA) &&
1081 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1082 Args.hasArg(options::OPT_fmodule_file_deps))
1083 CmdArgs.push_back("-module-file-deps");
1086 if (Args.hasArg(options::OPT_MG)) {
1087 if (!A || A->getOption().matches(options::OPT_MD) ||
1088 A->getOption().matches(options::OPT_MMD))
1089 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1090 CmdArgs.push_back("-MG");
1093 Args.AddLastArg(CmdArgs, options::OPT_MP);
1094 Args.AddLastArg(CmdArgs, options::OPT_MV);
1096 // Convert all -MQ <target> args to -MT <quoted target>
1097 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1100 if (A->getOption().matches(options::OPT_MQ)) {
1101 CmdArgs.push_back("-MT");
1102 SmallString<128> Quoted;
1103 QuoteTarget(A->getValue(), Quoted);
1104 CmdArgs.push_back(Args.MakeArgString(Quoted));
1106 // -MT flag - no change
1108 A->render(Args, CmdArgs);
1112 // Add offload include arguments specific for CUDA. This must happen before
1113 // we -I or -include anything else, because we must pick up the CUDA headers
1114 // from the particular CUDA installation, rather than from e.g.
1115 // /usr/local/include.
1116 if (JA.isOffloading(Action::OFK_Cuda))
1117 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1119 // Add -i* options, and automatically translate to
1120 // -include-pch/-include-pth for transparent PCH support. It's
1121 // wonky, but we include looking for .gch so we can support seamless
1122 // replacement into a build system already set up to be generating
1125 if (getToolChain().getDriver().IsCLMode()) {
1126 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1127 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1128 if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1129 JA.getKind() <= Action::AssembleJobClass) {
1130 CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1132 if (YcArg || YuArg) {
1133 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1134 if (!isa<PrecompileJobAction>(JA)) {
1135 CmdArgs.push_back("-include-pch");
1136 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1137 C, !ThroughHeader.empty()
1139 : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1142 if (ThroughHeader.empty()) {
1143 CmdArgs.push_back(Args.MakeArgString(
1144 Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1147 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1152 bool RenderedImplicitInclude = false;
1153 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1154 if (A->getOption().matches(options::OPT_include)) {
1155 // Handling of gcc-style gch precompiled headers.
1156 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1157 RenderedImplicitInclude = true;
1159 bool FoundPCH = false;
1160 SmallString<128> P(A->getValue());
1161 // We want the files to have a name like foo.h.pch. Add a dummy extension
1162 // so that replace_extension does the right thing.
1164 llvm::sys::path::replace_extension(P, "pch");
1165 if (llvm::sys::fs::exists(P))
1169 llvm::sys::path::replace_extension(P, "gch");
1170 if (llvm::sys::fs::exists(P)) {
1176 if (IsFirstImplicitInclude) {
1178 CmdArgs.push_back("-include-pch");
1179 CmdArgs.push_back(Args.MakeArgString(P));
1182 // Ignore the PCH if not first on command line and emit warning.
1183 D.Diag(diag::warn_drv_pch_not_first_include) << P
1184 << A->getAsString(Args);
1187 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1188 // Handling of paths which must come late. These entries are handled by
1189 // the toolchain itself after the resource dir is inserted in the right
1191 // Do not claim the argument so that the use of the argument does not
1192 // silently go unnoticed on toolchains which do not honour the option.
1196 // Not translated, render as usual.
1198 A->render(Args, CmdArgs);
1201 Args.AddAllArgs(CmdArgs,
1202 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1203 options::OPT_F, options::OPT_index_header_map});
1205 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1207 // FIXME: There is a very unfortunate problem here, some troubled
1208 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1209 // really support that we would have to parse and then translate
1210 // those options. :(
1211 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1212 options::OPT_Xpreprocessor);
1214 // -I- is a deprecated GCC feature, reject it.
1215 if (Arg *A = Args.getLastArg(options::OPT_I_))
1216 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1218 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1219 // -isysroot to the CC1 invocation.
1220 StringRef sysroot = C.getSysRoot();
1221 if (sysroot != "") {
1222 if (!Args.hasArg(options::OPT_isysroot)) {
1223 CmdArgs.push_back("-isysroot");
1224 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1228 // Parse additional include paths from environment variables.
1229 // FIXME: We should probably sink the logic for handling these from the
1230 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1231 // CPATH - included following the user specified includes (but prior to
1232 // builtin and standard includes).
1233 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1234 // C_INCLUDE_PATH - system includes enabled when compiling C.
1235 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1236 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1237 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1238 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1239 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1240 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1241 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1243 // While adding the include arguments, we also attempt to retrieve the
1244 // arguments of related offloading toolchains or arguments that are specific
1245 // of an offloading programming model.
1247 // Add C++ include arguments, if needed.
1248 if (types::isCXX(Inputs[0].getType()))
1249 forAllAssociatedToolChains(C, JA, getToolChain(),
1250 [&Args, &CmdArgs](const ToolChain &TC) {
1251 TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1254 // Add system include arguments for all targets but IAMCU.
1256 forAllAssociatedToolChains(C, JA, getToolChain(),
1257 [&Args, &CmdArgs](const ToolChain &TC) {
1258 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1261 // For IAMCU add special include arguments.
1262 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1266 // FIXME: Move to target hook.
1267 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1268 switch (Triple.getArch()) {
1272 case llvm::Triple::aarch64:
1273 case llvm::Triple::aarch64_be:
1274 case llvm::Triple::arm:
1275 case llvm::Triple::armeb:
1276 case llvm::Triple::thumb:
1277 case llvm::Triple::thumbeb:
1278 if (Triple.isOSDarwin() || Triple.isOSWindows())
1282 case llvm::Triple::ppc:
1283 case llvm::Triple::ppc64:
1284 if (Triple.isOSDarwin())
1288 case llvm::Triple::hexagon:
1289 case llvm::Triple::ppc64le:
1290 case llvm::Triple::riscv32:
1291 case llvm::Triple::riscv64:
1292 case llvm::Triple::systemz:
1293 case llvm::Triple::xcore:
1298 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1299 switch (Triple.getArch()) {
1301 if (Triple.isOSFuchsia())
1305 case llvm::Triple::xcore:
1306 case llvm::Triple::wasm32:
1307 case llvm::Triple::wasm64:
1313 void RenderARMABI(const llvm::Triple &Triple, const ArgList &Args,
1314 ArgStringList &CmdArgs) {
1315 // Select the ABI to use.
1316 // FIXME: Support -meabi.
1317 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1318 const char *ABIName = nullptr;
1319 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1320 ABIName = A->getValue();
1322 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1323 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1326 CmdArgs.push_back("-target-abi");
1327 CmdArgs.push_back(ABIName);
1331 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1332 ArgStringList &CmdArgs, bool KernelOrKext) const {
1333 RenderARMABI(Triple, Args, CmdArgs);
1335 // Determine floating point ABI from the options & target defaults.
1336 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1337 if (ABI == arm::FloatABI::Soft) {
1338 // Floating point operations and argument passing are soft.
1339 // FIXME: This changes CPP defines, we need -target-soft-float.
1340 CmdArgs.push_back("-msoft-float");
1341 CmdArgs.push_back("-mfloat-abi");
1342 CmdArgs.push_back("soft");
1343 } else if (ABI == arm::FloatABI::SoftFP) {
1344 // Floating point operations are hard, but argument passing is soft.
1345 CmdArgs.push_back("-mfloat-abi");
1346 CmdArgs.push_back("soft");
1348 // Floating point operations and argument passing are hard.
1349 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1350 CmdArgs.push_back("-mfloat-abi");
1351 CmdArgs.push_back("hard");
1354 // Forward the -mglobal-merge option for explicit control over the pass.
1355 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1356 options::OPT_mno_global_merge)) {
1357 CmdArgs.push_back("-mllvm");
1358 if (A->getOption().matches(options::OPT_mno_global_merge))
1359 CmdArgs.push_back("-arm-global-merge=false");
1361 CmdArgs.push_back("-arm-global-merge=true");
1364 if (!Args.hasFlag(options::OPT_mimplicit_float,
1365 options::OPT_mno_implicit_float, true))
1366 CmdArgs.push_back("-no-implicit-float");
1369 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1370 const ArgList &Args, bool KernelOrKext,
1371 ArgStringList &CmdArgs) const {
1372 const ToolChain &TC = getToolChain();
1374 // Add the target features
1375 getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1377 // Add target specific flags.
1378 switch (TC.getArch()) {
1382 case llvm::Triple::arm:
1383 case llvm::Triple::armeb:
1384 case llvm::Triple::thumb:
1385 case llvm::Triple::thumbeb:
1386 // Use the effective triple, which takes into account the deployment target.
1387 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1388 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1391 case llvm::Triple::aarch64:
1392 case llvm::Triple::aarch64_be:
1393 AddAArch64TargetArgs(Args, CmdArgs);
1394 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1397 case llvm::Triple::mips:
1398 case llvm::Triple::mipsel:
1399 case llvm::Triple::mips64:
1400 case llvm::Triple::mips64el:
1401 AddMIPSTargetArgs(Args, CmdArgs);
1404 case llvm::Triple::ppc:
1405 case llvm::Triple::ppc64:
1406 case llvm::Triple::ppc64le:
1407 AddPPCTargetArgs(Args, CmdArgs);
1410 case llvm::Triple::riscv32:
1411 case llvm::Triple::riscv64:
1412 AddRISCVTargetArgs(Args, CmdArgs);
1415 case llvm::Triple::sparc:
1416 case llvm::Triple::sparcel:
1417 case llvm::Triple::sparcv9:
1418 AddSparcTargetArgs(Args, CmdArgs);
1421 case llvm::Triple::systemz:
1422 AddSystemZTargetArgs(Args, CmdArgs);
1425 case llvm::Triple::x86:
1426 case llvm::Triple::x86_64:
1427 AddX86TargetArgs(Args, CmdArgs);
1430 case llvm::Triple::lanai:
1431 AddLanaiTargetArgs(Args, CmdArgs);
1434 case llvm::Triple::hexagon:
1435 AddHexagonTargetArgs(Args, CmdArgs);
1438 case llvm::Triple::wasm32:
1439 case llvm::Triple::wasm64:
1440 AddWebAssemblyTargetArgs(Args, CmdArgs);
1445 // Parse -mbranch-protection=<protection>[+<protection>]* where
1446 // <protection> ::= standard | none | [bti,pac-ret[+b-key,+leaf]*]
1447 // Returns a triple of (return address signing Scope, signing key, require
1449 static std::tuple<StringRef, StringRef, bool>
1450 ParseAArch64BranchProtection(const Driver &D, const ArgList &Args,
1452 StringRef Scope = "none";
1453 StringRef Key = "a_key";
1454 bool IndirectBranches = false;
1456 StringRef Value = A->getValue();
1457 // This maps onto -mbranch-protection=<scope>+<key>
1459 if (Value.equals("standard")) {
1462 IndirectBranches = true;
1464 } else if (!Value.equals("none")) {
1465 SmallVector<StringRef, 4> BranchProtection;
1466 StringRef(A->getValue()).split(BranchProtection, '+');
1468 auto Protection = BranchProtection.begin();
1469 while (Protection != BranchProtection.end()) {
1470 if (Protection->equals("bti"))
1471 IndirectBranches = true;
1472 else if (Protection->equals("pac-ret")) {
1474 while (++Protection != BranchProtection.end()) {
1475 // Inner loop as "leaf" and "b-key" options must only appear attached
1477 if (Protection->equals("leaf"))
1479 else if (Protection->equals("b-key"))
1486 D.Diag(diag::err_invalid_branch_protection)
1487 << *Protection << A->getAsString(Args);
1492 return std::make_tuple(Scope, Key, IndirectBranches);
1496 void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1497 ArgStringList &CmdArgs) {
1498 const char *ABIName = nullptr;
1499 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1500 ABIName = A->getValue();
1501 else if (Triple.isOSDarwin())
1502 ABIName = "darwinpcs";
1506 CmdArgs.push_back("-target-abi");
1507 CmdArgs.push_back(ABIName);
1511 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1512 ArgStringList &CmdArgs) const {
1513 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1515 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1516 Args.hasArg(options::OPT_mkernel) ||
1517 Args.hasArg(options::OPT_fapple_kext))
1518 CmdArgs.push_back("-disable-red-zone");
1520 if (!Args.hasFlag(options::OPT_mimplicit_float,
1521 options::OPT_mno_implicit_float, true))
1522 CmdArgs.push_back("-no-implicit-float");
1524 RenderAArch64ABI(Triple, Args, CmdArgs);
1526 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1527 options::OPT_mno_fix_cortex_a53_835769)) {
1528 CmdArgs.push_back("-mllvm");
1529 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1530 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1532 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1533 } else if (Triple.isAndroid()) {
1534 // Enabled A53 errata (835769) workaround by default on android
1535 CmdArgs.push_back("-mllvm");
1536 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1539 // Forward the -mglobal-merge option for explicit control over the pass.
1540 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1541 options::OPT_mno_global_merge)) {
1542 CmdArgs.push_back("-mllvm");
1543 if (A->getOption().matches(options::OPT_mno_global_merge))
1544 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1546 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1549 // Enable/disable return address signing and indirect branch targets.
1550 if (Arg *A = Args.getLastArg(options::OPT_msign_return_address_EQ,
1551 options::OPT_mbranch_protection_EQ)) {
1553 const Driver &D = getToolChain().getDriver();
1555 StringRef Scope, Key;
1556 bool IndirectBranches;
1558 if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1559 Scope = A->getValue();
1560 if (!Scope.equals("none") && !Scope.equals("non-leaf") &&
1561 !Scope.equals("all"))
1562 D.Diag(diag::err_invalid_branch_protection)
1563 << Scope << A->getAsString(Args);
1565 IndirectBranches = false;
1567 std::tie(Scope, Key, IndirectBranches) =
1568 ParseAArch64BranchProtection(D, Args, A);
1571 Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1573 Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1574 if (IndirectBranches)
1575 CmdArgs.push_back("-mbranch-target-enforce");
1579 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1580 ArgStringList &CmdArgs) const {
1581 const Driver &D = getToolChain().getDriver();
1584 const llvm::Triple &Triple = getToolChain().getTriple();
1585 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1587 CmdArgs.push_back("-target-abi");
1588 CmdArgs.push_back(ABIName.data());
1590 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1591 if (ABI == mips::FloatABI::Soft) {
1592 // Floating point operations and argument passing are soft.
1593 CmdArgs.push_back("-msoft-float");
1594 CmdArgs.push_back("-mfloat-abi");
1595 CmdArgs.push_back("soft");
1597 // Floating point operations and argument passing are hard.
1598 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1599 CmdArgs.push_back("-mfloat-abi");
1600 CmdArgs.push_back("hard");
1603 if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1604 if (A->getOption().matches(options::OPT_mxgot)) {
1605 CmdArgs.push_back("-mllvm");
1606 CmdArgs.push_back("-mxgot");
1610 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1611 options::OPT_mno_ldc1_sdc1)) {
1612 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1613 CmdArgs.push_back("-mllvm");
1614 CmdArgs.push_back("-mno-ldc1-sdc1");
1618 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1619 options::OPT_mno_check_zero_division)) {
1620 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1621 CmdArgs.push_back("-mllvm");
1622 CmdArgs.push_back("-mno-check-zero-division");
1626 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1627 StringRef v = A->getValue();
1628 CmdArgs.push_back("-mllvm");
1629 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1633 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1635 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1637 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1638 // -mgpopt is the default for static, -fno-pic environments but these two
1639 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1640 // the only case where -mllvm -mgpopt is passed.
1641 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1642 // passed explicitly when compiling something with -mabicalls
1643 // (implictly) in affect. Currently the warning is in the backend.
1645 // When the ABI in use is N64, we also need to determine the PIC mode that
1646 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1648 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1650 llvm::Reloc::Model RelocationModel;
1653 std::tie(RelocationModel, PICLevel, IsPIE) =
1654 ParsePICArgs(getToolChain(), Args);
1656 NoABICalls = NoABICalls ||
1657 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1659 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1660 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1661 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1662 CmdArgs.push_back("-mllvm");
1663 CmdArgs.push_back("-mgpopt");
1665 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1666 options::OPT_mno_local_sdata);
1667 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1668 options::OPT_mno_extern_sdata);
1669 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1670 options::OPT_mno_embedded_data);
1672 CmdArgs.push_back("-mllvm");
1673 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1674 CmdArgs.push_back("-mlocal-sdata=1");
1676 CmdArgs.push_back("-mlocal-sdata=0");
1678 LocalSData->claim();
1682 CmdArgs.push_back("-mllvm");
1683 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1684 CmdArgs.push_back("-mextern-sdata=1");
1686 CmdArgs.push_back("-mextern-sdata=0");
1688 ExternSData->claim();
1692 CmdArgs.push_back("-mllvm");
1693 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1694 CmdArgs.push_back("-membedded-data=1");
1696 CmdArgs.push_back("-membedded-data=0");
1698 EmbeddedData->claim();
1701 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1702 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1707 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1708 StringRef Val = StringRef(A->getValue());
1709 if (mips::hasCompactBranches(CPUName)) {
1710 if (Val == "never" || Val == "always" || Val == "optimal") {
1711 CmdArgs.push_back("-mllvm");
1712 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1714 D.Diag(diag::err_drv_unsupported_option_argument)
1715 << A->getOption().getName() << Val;
1717 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1721 void Clang::AddPPCTargetArgs(const ArgList &Args,
1722 ArgStringList &CmdArgs) const {
1723 // Select the ABI to use.
1724 const char *ABIName = nullptr;
1725 if (getToolChain().getTriple().isOSLinux())
1726 switch (getToolChain().getArch()) {
1727 case llvm::Triple::ppc64: {
1728 // When targeting a processor that supports QPX, or if QPX is
1729 // specifically enabled, default to using the ABI that supports QPX (so
1730 // long as it is not specifically disabled).
1731 bool HasQPX = false;
1732 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1733 HasQPX = A->getValue() == StringRef("a2q");
1734 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1736 ABIName = "elfv1-qpx";
1743 case llvm::Triple::ppc64le:
1750 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1751 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1752 // the option if given as we don't have backend support for any targets
1753 // that don't use the altivec abi.
1754 if (StringRef(A->getValue()) != "altivec")
1755 ABIName = A->getValue();
1757 ppc::FloatABI FloatABI =
1758 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1760 if (FloatABI == ppc::FloatABI::Soft) {
1761 // Floating point operations and argument passing are soft.
1762 CmdArgs.push_back("-msoft-float");
1763 CmdArgs.push_back("-mfloat-abi");
1764 CmdArgs.push_back("soft");
1766 // Floating point operations and argument passing are hard.
1767 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1768 CmdArgs.push_back("-mfloat-abi");
1769 CmdArgs.push_back("hard");
1773 CmdArgs.push_back("-target-abi");
1774 CmdArgs.push_back(ABIName);
1778 void Clang::AddRISCVTargetArgs(const ArgList &Args,
1779 ArgStringList &CmdArgs) const {
1780 // FIXME: currently defaults to the soft-float ABIs. Will need to be
1781 // expanded to select ilp32f, ilp32d, lp64f, lp64d when appropriate.
1782 const char *ABIName = nullptr;
1783 const llvm::Triple &Triple = getToolChain().getTriple();
1784 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1785 ABIName = A->getValue();
1786 else if (Triple.getArch() == llvm::Triple::riscv32)
1788 else if (Triple.getArch() == llvm::Triple::riscv64)
1791 llvm_unreachable("Unexpected triple!");
1793 CmdArgs.push_back("-target-abi");
1794 CmdArgs.push_back(ABIName);
1797 void Clang::AddSparcTargetArgs(const ArgList &Args,
1798 ArgStringList &CmdArgs) const {
1799 sparc::FloatABI FloatABI =
1800 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1802 if (FloatABI == sparc::FloatABI::Soft) {
1803 // Floating point operations and argument passing are soft.
1804 CmdArgs.push_back("-msoft-float");
1805 CmdArgs.push_back("-mfloat-abi");
1806 CmdArgs.push_back("soft");
1808 // Floating point operations and argument passing are hard.
1809 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1810 CmdArgs.push_back("-mfloat-abi");
1811 CmdArgs.push_back("hard");
1815 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1816 ArgStringList &CmdArgs) const {
1817 if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1818 CmdArgs.push_back("-mbackchain");
1821 void Clang::AddX86TargetArgs(const ArgList &Args,
1822 ArgStringList &CmdArgs) const {
1823 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1824 Args.hasArg(options::OPT_mkernel) ||
1825 Args.hasArg(options::OPT_fapple_kext))
1826 CmdArgs.push_back("-disable-red-zone");
1828 if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
1829 options::OPT_mno_tls_direct_seg_refs, true))
1830 CmdArgs.push_back("-mno-tls-direct-seg-refs");
1832 // Default to avoid implicit floating-point for kernel/kext code, but allow
1833 // that to be overridden with -mno-soft-float.
1834 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1835 Args.hasArg(options::OPT_fapple_kext));
1836 if (Arg *A = Args.getLastArg(
1837 options::OPT_msoft_float, options::OPT_mno_soft_float,
1838 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1839 const Option &O = A->getOption();
1840 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1841 O.matches(options::OPT_msoft_float));
1843 if (NoImplicitFloat)
1844 CmdArgs.push_back("-no-implicit-float");
1846 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1847 StringRef Value = A->getValue();
1848 if (Value == "intel" || Value == "att") {
1849 CmdArgs.push_back("-mllvm");
1850 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1852 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1853 << A->getOption().getName() << Value;
1855 } else if (getToolChain().getDriver().IsCLMode()) {
1856 CmdArgs.push_back("-mllvm");
1857 CmdArgs.push_back("-x86-asm-syntax=intel");
1860 // Set flags to support MCU ABI.
1861 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1862 CmdArgs.push_back("-mfloat-abi");
1863 CmdArgs.push_back("soft");
1864 CmdArgs.push_back("-mstack-alignment=4");
1868 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1869 ArgStringList &CmdArgs) const {
1870 CmdArgs.push_back("-mqdsp6-compat");
1871 CmdArgs.push_back("-Wreturn-type");
1873 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
1874 CmdArgs.push_back("-mllvm");
1875 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1876 Twine(G.getValue())));
1879 if (!Args.hasArg(options::OPT_fno_short_enums))
1880 CmdArgs.push_back("-fshort-enums");
1881 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1882 CmdArgs.push_back("-mllvm");
1883 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1885 CmdArgs.push_back("-mllvm");
1886 CmdArgs.push_back("-machine-sink-split=0");
1889 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1890 ArgStringList &CmdArgs) const {
1891 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1892 StringRef CPUName = A->getValue();
1894 CmdArgs.push_back("-target-cpu");
1895 CmdArgs.push_back(Args.MakeArgString(CPUName));
1897 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1898 StringRef Value = A->getValue();
1899 // Only support mregparm=4 to support old usage. Report error for all other
1902 if (Value.getAsInteger(10, Mregparm)) {
1903 if (Mregparm != 4) {
1904 getToolChain().getDriver().Diag(
1905 diag::err_drv_unsupported_option_argument)
1906 << A->getOption().getName() << Value;
1912 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1913 ArgStringList &CmdArgs) const {
1914 // Default to "hidden" visibility.
1915 if (!Args.hasArg(options::OPT_fvisibility_EQ,
1916 options::OPT_fvisibility_ms_compat)) {
1917 CmdArgs.push_back("-fvisibility");
1918 CmdArgs.push_back("hidden");
1922 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1923 StringRef Target, const InputInfo &Output,
1924 const InputInfo &Input, const ArgList &Args) const {
1925 // If this is a dry run, do not create the compilation database file.
1926 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1929 using llvm::yaml::escape;
1930 const Driver &D = getToolChain().getDriver();
1932 if (!CompilationDatabase) {
1934 auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1936 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1940 CompilationDatabase = std::move(File);
1942 auto &CDB = *CompilationDatabase;
1943 SmallString<128> Buf;
1944 if (llvm::sys::fs::current_path(Buf))
1946 CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1947 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1948 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1949 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1951 Buf += types::getTypeName(Input.getType());
1952 CDB << ", \"" << escape(Buf) << "\"";
1953 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1956 CDB << ", \"" << escape(Buf) << "\"";
1958 CDB << ", \"" << escape(Input.getFilename()) << "\"";
1959 for (auto &A: Args) {
1960 auto &O = A->getOption();
1961 // Skip language selection, which is positional.
1962 if (O.getID() == options::OPT_x)
1964 // Skip writing dependency output and the compilation database itself.
1965 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1968 if (O.getKind() == Option::InputClass)
1970 // All other arguments are quoted and appended.
1972 A->render(Args, ASL);
1974 CDB << ", \"" << escape(it) << "\"";
1978 CDB << ", \"" << escape(Buf) << "\"]},\n";
1981 static void CollectArgsForIntegratedAssembler(Compilation &C,
1982 const ArgList &Args,
1983 ArgStringList &CmdArgs,
1985 if (UseRelaxAll(C, Args))
1986 CmdArgs.push_back("-mrelax-all");
1988 // Only default to -mincremental-linker-compatible if we think we are
1989 // targeting the MSVC linker.
1990 bool DefaultIncrementalLinkerCompatible =
1991 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1992 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1993 options::OPT_mno_incremental_linker_compatible,
1994 DefaultIncrementalLinkerCompatible))
1995 CmdArgs.push_back("-mincremental-linker-compatible");
1997 switch (C.getDefaultToolChain().getArch()) {
1998 case llvm::Triple::arm:
1999 case llvm::Triple::armeb:
2000 case llvm::Triple::thumb:
2001 case llvm::Triple::thumbeb:
2002 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
2003 StringRef Value = A->getValue();
2004 if (Value == "always" || Value == "never" || Value == "arm" ||
2006 CmdArgs.push_back("-mllvm");
2007 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2009 D.Diag(diag::err_drv_unsupported_option_argument)
2010 << A->getOption().getName() << Value;
2018 // When passing -I arguments to the assembler we sometimes need to
2019 // unconditionally take the next argument. For example, when parsing
2020 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2021 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2022 // arg after parsing the '-I' arg.
2023 bool TakeNextArg = false;
2025 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2026 const char *MipsTargetFeature = nullptr;
2028 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
2031 for (StringRef Value : A->getValues()) {
2033 CmdArgs.push_back(Value.data());
2034 TakeNextArg = false;
2038 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2039 Value == "-mbig-obj")
2040 continue; // LLVM handles bigobj automatically
2042 switch (C.getDefaultToolChain().getArch()) {
2045 case llvm::Triple::thumb:
2046 case llvm::Triple::thumbeb:
2047 case llvm::Triple::arm:
2048 case llvm::Triple::armeb:
2049 if (Value == "-mthumb")
2050 // -mthumb has already been processed in ComputeLLVMTriple()
2051 // recognize but skip over here.
2054 case llvm::Triple::mips:
2055 case llvm::Triple::mipsel:
2056 case llvm::Triple::mips64:
2057 case llvm::Triple::mips64el:
2058 if (Value == "--trap") {
2059 CmdArgs.push_back("-target-feature");
2060 CmdArgs.push_back("+use-tcc-in-div");
2063 if (Value == "--break") {
2064 CmdArgs.push_back("-target-feature");
2065 CmdArgs.push_back("-use-tcc-in-div");
2068 if (Value.startswith("-msoft-float")) {
2069 CmdArgs.push_back("-target-feature");
2070 CmdArgs.push_back("+soft-float");
2073 if (Value.startswith("-mhard-float")) {
2074 CmdArgs.push_back("-target-feature");
2075 CmdArgs.push_back("-soft-float");
2079 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2080 .Case("-mips1", "+mips1")
2081 .Case("-mips2", "+mips2")
2082 .Case("-mips3", "+mips3")
2083 .Case("-mips4", "+mips4")
2084 .Case("-mips5", "+mips5")
2085 .Case("-mips32", "+mips32")
2086 .Case("-mips32r2", "+mips32r2")
2087 .Case("-mips32r3", "+mips32r3")
2088 .Case("-mips32r5", "+mips32r5")
2089 .Case("-mips32r6", "+mips32r6")
2090 .Case("-mips64", "+mips64")
2091 .Case("-mips64r2", "+mips64r2")
2092 .Case("-mips64r3", "+mips64r3")
2093 .Case("-mips64r5", "+mips64r5")
2094 .Case("-mips64r6", "+mips64r6")
2096 if (MipsTargetFeature)
2100 if (Value == "-force_cpusubtype_ALL") {
2101 // Do nothing, this is the default and we don't support anything else.
2102 } else if (Value == "-L") {
2103 CmdArgs.push_back("-msave-temp-labels");
2104 } else if (Value == "--fatal-warnings") {
2105 CmdArgs.push_back("-massembler-fatal-warnings");
2106 } else if (Value == "--noexecstack") {
2107 CmdArgs.push_back("-mnoexecstack");
2108 } else if (Value.startswith("-compress-debug-sections") ||
2109 Value.startswith("--compress-debug-sections") ||
2110 Value == "-nocompress-debug-sections" ||
2111 Value == "--nocompress-debug-sections") {
2112 CmdArgs.push_back(Value.data());
2113 } else if (Value == "-mrelax-relocations=yes" ||
2114 Value == "--mrelax-relocations=yes") {
2115 UseRelaxRelocations = true;
2116 } else if (Value == "-mrelax-relocations=no" ||
2117 Value == "--mrelax-relocations=no") {
2118 UseRelaxRelocations = false;
2119 } else if (Value.startswith("-I")) {
2120 CmdArgs.push_back(Value.data());
2121 // We need to consume the next argument if the current arg is a plain
2122 // -I. The next arg will be the include directory.
2125 } else if (Value.startswith("-gdwarf-")) {
2126 // "-gdwarf-N" options are not cc1as options.
2127 unsigned DwarfVersion = DwarfVersionNum(Value);
2128 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2129 CmdArgs.push_back(Value.data());
2131 RenderDebugEnablingArgs(Args, CmdArgs,
2132 codegenoptions::LimitedDebugInfo,
2133 DwarfVersion, llvm::DebuggerKind::Default);
2135 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2136 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2137 // Do nothing, we'll validate it later.
2138 } else if (Value == "-defsym") {
2139 if (A->getNumValues() != 2) {
2140 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2143 const char *S = A->getValue(1);
2144 auto Pair = StringRef(S).split('=');
2145 auto Sym = Pair.first;
2146 auto SVal = Pair.second;
2148 if (Sym.empty() || SVal.empty()) {
2149 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2153 if (SVal.getAsInteger(0, IVal)) {
2154 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2157 CmdArgs.push_back(Value.data());
2159 } else if (Value == "-fdebug-compilation-dir") {
2160 CmdArgs.push_back("-fdebug-compilation-dir");
2163 D.Diag(diag::err_drv_unsupported_option_argument)
2164 << A->getOption().getName() << Value;
2168 if (UseRelaxRelocations)
2169 CmdArgs.push_back("--mrelax-relocations");
2170 if (MipsTargetFeature != nullptr) {
2171 CmdArgs.push_back("-target-feature");
2172 CmdArgs.push_back(MipsTargetFeature);
2175 // forward -fembed-bitcode to assmebler
2176 if (C.getDriver().embedBitcodeEnabled() ||
2177 C.getDriver().embedBitcodeMarkerOnly())
2178 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2181 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2182 bool OFastEnabled, const ArgList &Args,
2183 ArgStringList &CmdArgs) {
2184 // Handle various floating point optimization flags, mapping them to the
2185 // appropriate LLVM code generation flags. This is complicated by several
2186 // "umbrella" flags, so we do this by stepping through the flags incrementally
2187 // adjusting what we think is enabled/disabled, then at the end setting the
2188 // LLVM flags based on the final state.
2189 bool HonorINFs = true;
2190 bool HonorNaNs = true;
2191 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2192 bool MathErrno = TC.IsMathErrnoDefault();
2193 bool AssociativeMath = false;
2194 bool ReciprocalMath = false;
2195 bool SignedZeros = true;
2196 bool TrappingMath = true;
2197 StringRef DenormalFPMath = "";
2198 StringRef FPContract = "";
2200 if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2201 CmdArgs.push_back("-mlimit-float-precision");
2202 CmdArgs.push_back(A->getValue());
2205 for (const Arg *A : Args) {
2206 switch (A->getOption().getID()) {
2207 // If this isn't an FP option skip the claim below
2210 // Options controlling individual features
2211 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2212 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2213 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2214 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2215 case options::OPT_fmath_errno: MathErrno = true; break;
2216 case options::OPT_fno_math_errno: MathErrno = false; break;
2217 case options::OPT_fassociative_math: AssociativeMath = true; break;
2218 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2219 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2220 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2221 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2222 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2223 case options::OPT_ftrapping_math: TrappingMath = true; break;
2224 case options::OPT_fno_trapping_math: TrappingMath = false; break;
2226 case options::OPT_fdenormal_fp_math_EQ:
2227 DenormalFPMath = A->getValue();
2230 // Validate and pass through -fp-contract option.
2231 case options::OPT_ffp_contract: {
2232 StringRef Val = A->getValue();
2233 if (Val == "fast" || Val == "on" || Val == "off")
2236 D.Diag(diag::err_drv_unsupported_option_argument)
2237 << A->getOption().getName() << Val;
2241 case options::OPT_ffinite_math_only:
2245 case options::OPT_fno_finite_math_only:
2250 case options::OPT_funsafe_math_optimizations:
2251 AssociativeMath = true;
2252 ReciprocalMath = true;
2253 SignedZeros = false;
2254 TrappingMath = false;
2256 case options::OPT_fno_unsafe_math_optimizations:
2257 AssociativeMath = false;
2258 ReciprocalMath = false;
2260 TrappingMath = true;
2261 // -fno_unsafe_math_optimizations restores default denormal handling
2262 DenormalFPMath = "";
2265 case options::OPT_Ofast:
2266 // If -Ofast is the optimization level, then -ffast-math should be enabled
2270 case options::OPT_ffast_math:
2274 AssociativeMath = true;
2275 ReciprocalMath = true;
2276 SignedZeros = false;
2277 TrappingMath = false;
2278 // If fast-math is set then set the fp-contract mode to fast.
2279 FPContract = "fast";
2281 case options::OPT_fno_fast_math:
2284 // Turning on -ffast-math (with either flag) removes the need for
2285 // MathErrno. However, turning *off* -ffast-math merely restores the
2286 // toolchain default (which may be false).
2287 MathErrno = TC.IsMathErrnoDefault();
2288 AssociativeMath = false;
2289 ReciprocalMath = false;
2291 TrappingMath = true;
2292 // -fno_fast_math restores default denormal and fpcontract handling
2293 DenormalFPMath = "";
2298 // If we handled this option claim it
2303 CmdArgs.push_back("-menable-no-infs");
2306 CmdArgs.push_back("-menable-no-nans");
2309 CmdArgs.push_back("-fmath-errno");
2311 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2313 CmdArgs.push_back("-menable-unsafe-fp-math");
2316 CmdArgs.push_back("-fno-signed-zeros");
2318 if (AssociativeMath && !SignedZeros && !TrappingMath)
2319 CmdArgs.push_back("-mreassociate");
2322 CmdArgs.push_back("-freciprocal-math");
2325 CmdArgs.push_back("-fno-trapping-math");
2327 if (!DenormalFPMath.empty())
2329 Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2331 if (!FPContract.empty())
2332 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2334 ParseMRecip(D, Args, CmdArgs);
2336 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2337 // individual features enabled by -ffast-math instead of the option itself as
2338 // that's consistent with gcc's behaviour.
2339 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2340 ReciprocalMath && !SignedZeros && !TrappingMath)
2341 CmdArgs.push_back("-ffast-math");
2343 // Handle __FINITE_MATH_ONLY__ similarly.
2344 if (!HonorINFs && !HonorNaNs)
2345 CmdArgs.push_back("-ffinite-math-only");
2347 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2348 CmdArgs.push_back("-mfpmath");
2349 CmdArgs.push_back(A->getValue());
2352 // Disable a codegen optimization for floating-point casts.
2353 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2354 options::OPT_fstrict_float_cast_overflow, false))
2355 CmdArgs.push_back("-fno-strict-float-cast-overflow");
2358 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2359 const llvm::Triple &Triple,
2360 const InputInfo &Input) {
2361 // Enable region store model by default.
2362 CmdArgs.push_back("-analyzer-store=region");
2364 // Treat blocks as analysis entry points.
2365 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2367 // Add default argument set.
2368 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2369 CmdArgs.push_back("-analyzer-checker=core");
2370 CmdArgs.push_back("-analyzer-checker=apiModeling");
2372 if (!Triple.isWindowsMSVCEnvironment()) {
2373 CmdArgs.push_back("-analyzer-checker=unix");
2375 // Enable "unix" checkers that also work on Windows.
2376 CmdArgs.push_back("-analyzer-checker=unix.API");
2377 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2378 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2379 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2380 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2381 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2384 // Disable some unix checkers for PS4.
2385 if (Triple.isPS4CPU()) {
2386 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2387 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2390 if (Triple.isOSDarwin())
2391 CmdArgs.push_back("-analyzer-checker=osx");
2393 CmdArgs.push_back("-analyzer-checker=deadcode");
2395 if (types::isCXX(Input.getType()))
2396 CmdArgs.push_back("-analyzer-checker=cplusplus");
2398 if (!Triple.isPS4CPU()) {
2399 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2400 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2401 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2402 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2403 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2404 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2407 // Default nullability checks.
2408 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2409 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2412 // Set the output format. The default is plist, for (lame) historical reasons.
2413 CmdArgs.push_back("-analyzer-output");
2414 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2415 CmdArgs.push_back(A->getValue());
2417 CmdArgs.push_back("plist");
2419 // Disable the presentation of standard compiler warnings when using
2420 // --analyze. We only want to show static analyzer diagnostics or frontend
2422 CmdArgs.push_back("-w");
2424 // Add -Xanalyzer arguments when running as analyzer.
2425 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2428 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2429 ArgStringList &CmdArgs, bool KernelOrKext) {
2430 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2432 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2433 // doesn't even have a stack!
2434 if (EffectiveTriple.isNVPTX())
2437 // -stack-protector=0 is default.
2438 unsigned StackProtectorLevel = 0;
2439 unsigned DefaultStackProtectorLevel =
2440 TC.GetDefaultStackProtectorLevel(KernelOrKext);
2442 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2443 options::OPT_fstack_protector_all,
2444 options::OPT_fstack_protector_strong,
2445 options::OPT_fstack_protector)) {
2446 if (A->getOption().matches(options::OPT_fstack_protector))
2447 StackProtectorLevel =
2448 std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2449 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2450 StackProtectorLevel = LangOptions::SSPStrong;
2451 else if (A->getOption().matches(options::OPT_fstack_protector_all))
2452 StackProtectorLevel = LangOptions::SSPReq;
2454 StackProtectorLevel = DefaultStackProtectorLevel;
2457 if (StackProtectorLevel) {
2458 CmdArgs.push_back("-stack-protector");
2459 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2462 // --param ssp-buffer-size=
2463 for (const Arg *A : Args.filtered(options::OPT__param)) {
2464 StringRef Str(A->getValue());
2465 if (Str.startswith("ssp-buffer-size=")) {
2466 if (StackProtectorLevel) {
2467 CmdArgs.push_back("-stack-protector-buffer-size");
2468 // FIXME: Verify the argument is a valid integer.
2469 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2476 static void RenderTrivialAutoVarInitOptions(const Driver &D,
2477 const ToolChain &TC,
2478 const ArgList &Args,
2479 ArgStringList &CmdArgs) {
2480 auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
2481 StringRef TrivialAutoVarInit = "";
2483 for (const Arg *A : Args) {
2484 switch (A->getOption().getID()) {
2487 case options::OPT_ftrivial_auto_var_init: {
2489 StringRef Val = A->getValue();
2490 if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
2491 TrivialAutoVarInit = Val;
2493 D.Diag(diag::err_drv_unsupported_option_argument)
2494 << A->getOption().getName() << Val;
2500 if (TrivialAutoVarInit.empty())
2501 switch (DefaultTrivialAutoVarInit) {
2502 case LangOptions::TrivialAutoVarInitKind::Uninitialized:
2504 case LangOptions::TrivialAutoVarInitKind::Pattern:
2505 TrivialAutoVarInit = "pattern";
2507 case LangOptions::TrivialAutoVarInitKind::Zero:
2508 TrivialAutoVarInit = "zero";
2512 if (!TrivialAutoVarInit.empty()) {
2513 if (TrivialAutoVarInit == "zero" && !Args.hasArg(options::OPT_enable_trivial_var_init_zero))
2514 D.Diag(diag::err_drv_trivial_auto_var_init_zero_disabled);
2516 Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
2520 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2521 const unsigned ForwardedArguments[] = {
2522 options::OPT_cl_opt_disable,
2523 options::OPT_cl_strict_aliasing,
2524 options::OPT_cl_single_precision_constant,
2525 options::OPT_cl_finite_math_only,
2526 options::OPT_cl_kernel_arg_info,
2527 options::OPT_cl_unsafe_math_optimizations,
2528 options::OPT_cl_fast_relaxed_math,
2529 options::OPT_cl_mad_enable,
2530 options::OPT_cl_no_signed_zeros,
2531 options::OPT_cl_denorms_are_zero,
2532 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2533 options::OPT_cl_uniform_work_group_size
2536 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2537 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2538 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2541 for (const auto &Arg : ForwardedArguments)
2542 if (const auto *A = Args.getLastArg(Arg))
2543 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2546 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2547 ArgStringList &CmdArgs) {
2548 bool ARCMTEnabled = false;
2549 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2550 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2551 options::OPT_ccc_arcmt_modify,
2552 options::OPT_ccc_arcmt_migrate)) {
2553 ARCMTEnabled = true;
2554 switch (A->getOption().getID()) {
2555 default: llvm_unreachable("missed a case");
2556 case options::OPT_ccc_arcmt_check:
2557 CmdArgs.push_back("-arcmt-check");
2559 case options::OPT_ccc_arcmt_modify:
2560 CmdArgs.push_back("-arcmt-modify");
2562 case options::OPT_ccc_arcmt_migrate:
2563 CmdArgs.push_back("-arcmt-migrate");
2564 CmdArgs.push_back("-mt-migrate-directory");
2565 CmdArgs.push_back(A->getValue());
2567 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2568 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2573 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2574 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2575 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2578 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2580 D.Diag(diag::err_drv_argument_not_allowed_with)
2581 << A->getAsString(Args) << "-ccc-arcmt-migrate";
2583 CmdArgs.push_back("-mt-migrate-directory");
2584 CmdArgs.push_back(A->getValue());
2586 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2587 options::OPT_objcmt_migrate_subscripting,
2588 options::OPT_objcmt_migrate_property)) {
2589 // None specified, means enable them all.
2590 CmdArgs.push_back("-objcmt-migrate-literals");
2591 CmdArgs.push_back("-objcmt-migrate-subscripting");
2592 CmdArgs.push_back("-objcmt-migrate-property");
2594 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2595 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2596 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2599 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2600 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2601 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2602 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2603 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2604 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2605 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2606 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2607 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2608 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2609 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2610 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2611 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2612 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2613 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2614 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2618 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2619 const ArgList &Args, ArgStringList &CmdArgs) {
2620 // -fbuiltin is default unless -mkernel is used.
2622 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2623 !Args.hasArg(options::OPT_mkernel));
2625 CmdArgs.push_back("-fno-builtin");
2627 // -ffreestanding implies -fno-builtin.
2628 if (Args.hasArg(options::OPT_ffreestanding))
2629 UseBuiltins = false;
2631 // Process the -fno-builtin-* options.
2632 for (const auto &Arg : Args) {
2633 const Option &O = Arg->getOption();
2634 if (!O.matches(options::OPT_fno_builtin_))
2639 // If -fno-builtin is specified, then there's no need to pass the option to
2644 StringRef FuncName = Arg->getValue();
2645 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2648 // le32-specific flags:
2649 // -fno-math-builtin: clang should not convert math builtins to intrinsics
2651 if (TC.getArch() == llvm::Triple::le32)
2652 CmdArgs.push_back("-fno-math-builtin");
2655 void Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
2656 llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Result);
2657 llvm::sys::path::append(Result, "org.llvm.clang.");
2658 appendUserToPath(Result);
2659 llvm::sys::path::append(Result, "ModuleCache");
2662 static void RenderModulesOptions(Compilation &C, const Driver &D,
2663 const ArgList &Args, const InputInfo &Input,
2664 const InputInfo &Output,
2665 ArgStringList &CmdArgs, bool &HaveModules) {
2666 // -fmodules enables the use of precompiled modules (off by default).
2667 // Users can pass -fno-cxx-modules to turn off modules support for
2668 // C++/Objective-C++ programs.
2669 bool HaveClangModules = false;
2670 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2671 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2672 options::OPT_fno_cxx_modules, true);
2673 if (AllowedInCXX || !types::isCXX(Input.getType())) {
2674 CmdArgs.push_back("-fmodules");
2675 HaveClangModules = true;
2679 HaveModules = HaveClangModules;
2680 if (Args.hasArg(options::OPT_fmodules_ts)) {
2681 CmdArgs.push_back("-fmodules-ts");
2685 // -fmodule-maps enables implicit reading of module map files. By default,
2686 // this is enabled if we are using Clang's flavor of precompiled modules.
2687 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2688 options::OPT_fno_implicit_module_maps, HaveClangModules))
2689 CmdArgs.push_back("-fimplicit-module-maps");
2691 // -fmodules-decluse checks that modules used are declared so (off by default)
2692 if (Args.hasFlag(options::OPT_fmodules_decluse,
2693 options::OPT_fno_modules_decluse, false))
2694 CmdArgs.push_back("-fmodules-decluse");
2696 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2697 // all #included headers are part of modules.
2698 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2699 options::OPT_fno_modules_strict_decluse, false))
2700 CmdArgs.push_back("-fmodules-strict-decluse");
2702 // -fno-implicit-modules turns off implicitly compiling modules on demand.
2703 bool ImplicitModules = false;
2704 if (!Args.hasFlag(options::OPT_fimplicit_modules,
2705 options::OPT_fno_implicit_modules, HaveClangModules)) {
2707 CmdArgs.push_back("-fno-implicit-modules");
2708 } else if (HaveModules) {
2709 ImplicitModules = true;
2710 // -fmodule-cache-path specifies where our implicitly-built module files
2711 // should be written.
2712 SmallString<128> Path;
2713 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2714 Path = A->getValue();
2716 if (C.isForDiagnostics()) {
2717 // When generating crash reports, we want to emit the modules along with
2718 // the reproduction sources, so we ignore any provided module path.
2719 Path = Output.getFilename();
2720 llvm::sys::path::replace_extension(Path, ".cache");
2721 llvm::sys::path::append(Path, "modules");
2722 } else if (Path.empty()) {
2723 // No module path was provided: use the default.
2724 Driver::getDefaultModuleCachePath(Path);
2727 const char Arg[] = "-fmodules-cache-path=";
2728 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2729 CmdArgs.push_back(Args.MakeArgString(Path));
2733 // -fprebuilt-module-path specifies where to load the prebuilt module files.
2734 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2735 CmdArgs.push_back(Args.MakeArgString(
2736 std::string("-fprebuilt-module-path=") + A->getValue()));
2741 // -fmodule-name specifies the module that is currently being built (or
2742 // used for header checking by -fmodule-maps).
2743 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2745 // -fmodule-map-file can be used to specify files containing module
2747 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2749 // -fbuiltin-module-map can be used to load the clang
2750 // builtin headers modulemap file.
2751 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2752 SmallString<128> BuiltinModuleMap(D.ResourceDir);
2753 llvm::sys::path::append(BuiltinModuleMap, "include");
2754 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2755 if (llvm::sys::fs::exists(BuiltinModuleMap))
2757 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2760 // The -fmodule-file=<name>=<file> form specifies the mapping of module
2761 // names to precompiled module files (the module is loaded only if used).
2762 // The -fmodule-file=<file> form can be used to unconditionally load
2763 // precompiled module files (whether used or not).
2765 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2767 Args.ClaimAllArgs(options::OPT_fmodule_file);
2769 // When building modules and generating crashdumps, we need to dump a module
2770 // dependency VFS alongside the output.
2771 if (HaveClangModules && C.isForDiagnostics()) {
2772 SmallString<128> VFSDir(Output.getFilename());
2773 llvm::sys::path::replace_extension(VFSDir, ".cache");
2774 // Add the cache directory as a temp so the crash diagnostics pick it up.
2775 C.addTempFile(Args.MakeArgString(VFSDir));
2777 llvm::sys::path::append(VFSDir, "vfs");
2778 CmdArgs.push_back("-module-dependency-dir");
2779 CmdArgs.push_back(Args.MakeArgString(VFSDir));
2782 if (HaveClangModules)
2783 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2785 // Pass through all -fmodules-ignore-macro arguments.
2786 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2787 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2788 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2790 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2792 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2793 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2794 D.Diag(diag::err_drv_argument_not_allowed_with)
2795 << A->getAsString(Args) << "-fbuild-session-timestamp";
2797 llvm::sys::fs::file_status Status;
2798 if (llvm::sys::fs::status(A->getValue(), Status))
2799 D.Diag(diag::err_drv_no_such_file) << A->getValue();
2801 Args.MakeArgString("-fbuild-session-timestamp=" +
2802 Twine((uint64_t)Status.getLastModificationTime()
2807 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2808 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2809 options::OPT_fbuild_session_file))
2810 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2812 Args.AddLastArg(CmdArgs,
2813 options::OPT_fmodules_validate_once_per_build_session);
2816 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
2817 options::OPT_fno_modules_validate_system_headers,
2819 CmdArgs.push_back("-fmodules-validate-system-headers");
2821 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2824 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2825 ArgStringList &CmdArgs) {
2826 // -fsigned-char is default.
2827 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2828 options::OPT_fno_signed_char,
2829 options::OPT_funsigned_char,
2830 options::OPT_fno_unsigned_char)) {
2831 if (A->getOption().matches(options::OPT_funsigned_char) ||
2832 A->getOption().matches(options::OPT_fno_signed_char)) {
2833 CmdArgs.push_back("-fno-signed-char");
2835 } else if (!isSignedCharDefault(T)) {
2836 CmdArgs.push_back("-fno-signed-char");
2839 // The default depends on the language standard.
2841 Args.getLastArg(options::OPT_fchar8__t, options::OPT_fno_char8__t))
2842 A->render(Args, CmdArgs);
2844 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2845 options::OPT_fno_short_wchar)) {
2846 if (A->getOption().matches(options::OPT_fshort_wchar)) {
2847 CmdArgs.push_back("-fwchar-type=short");
2848 CmdArgs.push_back("-fno-signed-wchar");
2850 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2851 CmdArgs.push_back("-fwchar-type=int");
2852 if (IsARM && !(T.isOSWindows() || T.isOSNetBSD() ||
2854 CmdArgs.push_back("-fno-signed-wchar");
2856 CmdArgs.push_back("-fsigned-wchar");
2861 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2862 const llvm::Triple &T, const ArgList &Args,
2863 ObjCRuntime &Runtime, bool InferCovariantReturns,
2864 const InputInfo &Input, ArgStringList &CmdArgs) {
2865 const llvm::Triple::ArchType Arch = TC.getArch();
2867 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2868 // is the default. Except for deployment target of 10.5, next runtime is
2869 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2870 if (Runtime.isNonFragile()) {
2871 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2872 options::OPT_fno_objc_legacy_dispatch,
2873 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2874 if (TC.UseObjCMixedDispatch())
2875 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2877 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2881 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2882 // to do Array/Dictionary subscripting by default.
2883 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2884 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2885 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2887 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2888 // NOTE: This logic is duplicated in ToolChains.cpp.
2889 if (isObjCAutoRefCount(Args)) {
2892 CmdArgs.push_back("-fobjc-arc");
2894 // FIXME: It seems like this entire block, and several around it should be
2895 // wrapped in isObjC, but for now we just use it here as this is where it
2896 // was being used previously.
2897 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2898 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2899 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2901 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2904 // Allow the user to enable full exceptions code emission.
2905 // We default off for Objective-C, on for Objective-C++.
2906 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2907 options::OPT_fno_objc_arc_exceptions,
2908 /*default=*/types::isCXX(Input.getType())))
2909 CmdArgs.push_back("-fobjc-arc-exceptions");
2912 // Silence warning for full exception code emission options when explicitly
2913 // set to use no ARC.
2914 if (Args.hasArg(options::OPT_fno_objc_arc)) {
2915 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2916 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2919 // Allow the user to control whether messages can be converted to runtime
2921 if (types::isObjC(Input.getType())) {
2922 auto *Arg = Args.getLastArg(
2923 options::OPT_fobjc_convert_messages_to_runtime_calls,
2924 options::OPT_fno_objc_convert_messages_to_runtime_calls);
2926 Arg->getOption().matches(
2927 options::OPT_fno_objc_convert_messages_to_runtime_calls))
2928 CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
2931 // -fobjc-infer-related-result-type is the default, except in the Objective-C
2933 if (InferCovariantReturns)
2934 CmdArgs.push_back("-fno-objc-infer-related-result-type");
2936 // Pass down -fobjc-weak or -fno-objc-weak if present.
2937 if (types::isObjC(Input.getType())) {
2939 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
2942 } else if (!Runtime.allowsWeak()) {
2943 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
2944 D.Diag(diag::err_objc_weak_unsupported);
2946 WeakArg->render(Args, CmdArgs);
2951 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
2952 ArgStringList &CmdArgs) {
2953 bool CaretDefault = true;
2954 bool ColumnDefault = true;
2956 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
2957 options::OPT__SLASH_diagnostics_column,
2958 options::OPT__SLASH_diagnostics_caret)) {
2959 switch (A->getOption().getID()) {
2960 case options::OPT__SLASH_diagnostics_caret:
2961 CaretDefault = true;
2962 ColumnDefault = true;
2964 case options::OPT__SLASH_diagnostics_column:
2965 CaretDefault = false;
2966 ColumnDefault = true;
2968 case options::OPT__SLASH_diagnostics_classic:
2969 CaretDefault = false;
2970 ColumnDefault = false;
2975 // -fcaret-diagnostics is default.
2976 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
2977 options::OPT_fno_caret_diagnostics, CaretDefault))
2978 CmdArgs.push_back("-fno-caret-diagnostics");
2980 // -fdiagnostics-fixit-info is default, only pass non-default.
2981 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
2982 options::OPT_fno_diagnostics_fixit_info))
2983 CmdArgs.push_back("-fno-diagnostics-fixit-info");
2985 // Enable -fdiagnostics-show-option by default.
2986 if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
2987 options::OPT_fno_diagnostics_show_option))
2988 CmdArgs.push_back("-fdiagnostics-show-option");
2991 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
2992 CmdArgs.push_back("-fdiagnostics-show-category");
2993 CmdArgs.push_back(A->getValue());
2996 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
2997 options::OPT_fno_diagnostics_show_hotness, false))
2998 CmdArgs.push_back("-fdiagnostics-show-hotness");
3001 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
3003 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
3004 CmdArgs.push_back(Args.MakeArgString(Opt));
3007 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
3008 CmdArgs.push_back("-fdiagnostics-format");
3009 CmdArgs.push_back(A->getValue());
3012 if (const Arg *A = Args.getLastArg(
3013 options::OPT_fdiagnostics_show_note_include_stack,
3014 options::OPT_fno_diagnostics_show_note_include_stack)) {
3015 const Option &O = A->getOption();
3016 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
3017 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
3019 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
3022 // Color diagnostics are parsed by the driver directly from argv and later
3023 // re-parsed to construct this job; claim any possible color diagnostic here
3024 // to avoid warn_drv_unused_argument and diagnose bad
3025 // OPT_fdiagnostics_color_EQ values.
3026 for (const Arg *A : Args) {
3027 const Option &O = A->getOption();
3028 if (!O.matches(options::OPT_fcolor_diagnostics) &&
3029 !O.matches(options::OPT_fdiagnostics_color) &&
3030 !O.matches(options::OPT_fno_color_diagnostics) &&
3031 !O.matches(options::OPT_fno_diagnostics_color) &&
3032 !O.matches(options::OPT_fdiagnostics_color_EQ))
3035 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
3036 StringRef Value(A->getValue());
3037 if (Value != "always" && Value != "never" && Value != "auto")
3038 D.Diag(diag::err_drv_clang_unsupported)
3039 << ("-fdiagnostics-color=" + Value).str();
3044 if (D.getDiags().getDiagnosticOptions().ShowColors)
3045 CmdArgs.push_back("-fcolor-diagnostics");
3047 if (Args.hasArg(options::OPT_fansi_escape_codes))
3048 CmdArgs.push_back("-fansi-escape-codes");
3050 if (!Args.hasFlag(options::OPT_fshow_source_location,
3051 options::OPT_fno_show_source_location))
3052 CmdArgs.push_back("-fno-show-source-location");
3054 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
3055 CmdArgs.push_back("-fdiagnostics-absolute-paths");
3057 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
3059 CmdArgs.push_back("-fno-show-column");
3061 if (!Args.hasFlag(options::OPT_fspell_checking,
3062 options::OPT_fno_spell_checking))
3063 CmdArgs.push_back("-fno-spell-checking");
3066 enum class DwarfFissionKind { None, Split, Single };
3068 static DwarfFissionKind getDebugFissionKind(const Driver &D,
3069 const ArgList &Args, Arg *&Arg) {
3071 Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ);
3073 return DwarfFissionKind::None;
3075 if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
3076 return DwarfFissionKind::Split;
3078 StringRef Value = Arg->getValue();
3079 if (Value == "split")
3080 return DwarfFissionKind::Split;
3081 if (Value == "single")
3082 return DwarfFissionKind::Single;
3084 D.Diag(diag::err_drv_unsupported_option_argument)
3085 << Arg->getOption().getName() << Arg->getValue();
3086 return DwarfFissionKind::None;
3089 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
3090 const llvm::Triple &T, const ArgList &Args,
3091 bool EmitCodeView, bool IsWindowsMSVC,
3092 ArgStringList &CmdArgs,
3093 codegenoptions::DebugInfoKind &DebugInfoKind,
3094 DwarfFissionKind &DwarfFission) {
3095 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3096 options::OPT_fno_debug_info_for_profiling, false) &&
3097 checkDebugInfoOption(
3098 Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
3099 CmdArgs.push_back("-fdebug-info-for-profiling");
3101 // The 'g' groups options involve a somewhat intricate sequence of decisions
3102 // about what to pass from the driver to the frontend, but by the time they
3103 // reach cc1 they've been factored into three well-defined orthogonal choices:
3104 // * what level of debug info to generate
3105 // * what dwarf version to write
3106 // * what debugger tuning to use
3107 // This avoids having to monkey around further in cc1 other than to disable
3108 // codeview if not running in a Windows environment. Perhaps even that
3109 // decision should be made in the driver as well though.
3110 unsigned DWARFVersion = 0;
3111 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
3113 bool SplitDWARFInlining =
3114 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
3115 options::OPT_fno_split_dwarf_inlining, true);
3117 Args.ClaimAllArgs(options::OPT_g_Group);
3120 DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
3122 if (DwarfFission != DwarfFissionKind::None &&
3123 !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
3124 DwarfFission = DwarfFissionKind::None;
3125 SplitDWARFInlining = false;
3128 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
3129 if (checkDebugInfoOption(A, Args, D, TC)) {
3130 // If the last option explicitly specified a debug-info level, use it.
3131 if (A->getOption().matches(options::OPT_gN_Group)) {
3132 DebugInfoKind = DebugLevelToInfoKind(*A);
3133 // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
3134 // But -gsplit-dwarf is not a g_group option, hence we have to check the
3135 // order explicitly. If -gsplit-dwarf wins, we fix DebugInfoKind later.
3136 // This gets a bit more complicated if you've disabled inline info in
3137 // the skeleton CUs (SplitDWARFInlining) - then there's value in
3138 // composing split-dwarf and line-tables-only, so let those compose
3139 // naturally in that case. And if you just turned off debug info,
3140 // (-gsplit-dwarf -g0) - do that.
3141 if (DwarfFission != DwarfFissionKind::None) {
3142 if (A->getIndex() > SplitDWARFArg->getIndex()) {
3143 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
3144 DebugInfoKind == codegenoptions::DebugDirectivesOnly ||
3145 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
3146 SplitDWARFInlining))
3147 DwarfFission = DwarfFissionKind::None;
3148 } else if (SplitDWARFInlining)
3149 DebugInfoKind = codegenoptions::NoDebugInfo;
3152 // For any other 'g' option, use Limited.
3153 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3156 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3160 // If a debugger tuning argument appeared, remember it.
3162 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
3163 if (checkDebugInfoOption(A, Args, D, TC)) {
3164 if (A->getOption().matches(options::OPT_glldb))
3165 DebuggerTuning = llvm::DebuggerKind::LLDB;
3166 else if (A->getOption().matches(options::OPT_gsce))
3167 DebuggerTuning = llvm::DebuggerKind::SCE;
3169 DebuggerTuning = llvm::DebuggerKind::GDB;
3173 // If a -gdwarf argument appeared, remember it.
3175 Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
3176 options::OPT_gdwarf_4, options::OPT_gdwarf_5))
3177 if (checkDebugInfoOption(A, Args, D, TC))
3178 DWARFVersion = DwarfVersionNum(A->getSpelling());
3180 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
3181 if (checkDebugInfoOption(A, Args, D, TC))
3182 EmitCodeView = true;
3185 // If the user asked for debug info but did not explicitly specify -gcodeview
3186 // or -gdwarf, ask the toolchain for the default format.
3187 if (!EmitCodeView && DWARFVersion == 0 &&
3188 DebugInfoKind != codegenoptions::NoDebugInfo) {
3189 switch (TC.getDefaultDebugFormat()) {
3190 case codegenoptions::DIF_CodeView:
3191 EmitCodeView = true;
3193 case codegenoptions::DIF_DWARF:
3194 DWARFVersion = TC.GetDefaultDwarfVersion();
3199 // -gline-directives-only supported only for the DWARF debug info.
3200 if (DWARFVersion == 0 && DebugInfoKind == codegenoptions::DebugDirectivesOnly)
3201 DebugInfoKind = codegenoptions::NoDebugInfo;
3203 // We ignore flag -gstrict-dwarf for now.
3204 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
3205 Args.ClaimAllArgs(options::OPT_g_flags_Group);
3207 // Column info is included by default for everything except SCE and
3208 // CodeView. Clang doesn't track end columns, just starting columns, which,
3209 // in theory, is fine for CodeView (and PDB). In practice, however, the
3210 // Microsoft debuggers don't handle missing end columns well, so it's better
3211 // not to include any column info.
3212 if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
3213 (void)checkDebugInfoOption(A, Args, D, TC);
3214 if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
3215 /*Default=*/!EmitCodeView &&
3216 DebuggerTuning != llvm::DebuggerKind::SCE))
3217 CmdArgs.push_back("-dwarf-column-info");
3219 // FIXME: Move backend command line options to the module.
3220 // If -gline-tables-only or -gline-directives-only is the last option it wins.
3221 if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
3222 if (checkDebugInfoOption(A, Args, D, TC)) {
3223 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
3224 DebugInfoKind != codegenoptions::DebugDirectivesOnly) {
3225 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3226 CmdArgs.push_back("-dwarf-ext-refs");
3227 CmdArgs.push_back("-fmodule-format=obj");
3231 // -gsplit-dwarf should turn on -g and enable the backend dwarf
3232 // splitting and extraction.
3233 // FIXME: Currently only works on Linux and Fuchsia.
3234 if (T.isOSLinux() || T.isOSFuchsia()) {
3235 if (!SplitDWARFInlining)
3236 CmdArgs.push_back("-fno-split-dwarf-inlining");
3238 if (DwarfFission != DwarfFissionKind::None) {
3239 if (DebugInfoKind == codegenoptions::NoDebugInfo)
3240 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3242 if (DwarfFission == DwarfFissionKind::Single)
3243 CmdArgs.push_back("-enable-split-dwarf=single");
3245 CmdArgs.push_back("-enable-split-dwarf");
3249 // After we've dealt with all combinations of things that could
3250 // make DebugInfoKind be other than None or DebugLineTablesOnly,
3251 // figure out if we need to "upgrade" it to standalone debug info.
3252 // We parse these two '-f' options whether or not they will be used,
3253 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3254 bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
3255 options::OPT_fno_standalone_debug,
3256 TC.GetDefaultStandaloneDebug());
3257 if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
3258 (void)checkDebugInfoOption(A, Args, D, TC);
3259 if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
3260 DebugInfoKind = codegenoptions::FullDebugInfo;
3262 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
3264 // Source embedding is a vendor extension to DWARF v5. By now we have
3265 // checked if a DWARF version was stated explicitly, and have otherwise
3266 // fallen back to the target default, so if this is still not at least 5
3267 // we emit an error.
3268 const Arg *A = Args.getLastArg(options::OPT_gembed_source);
3269 if (DWARFVersion < 5)
3270 D.Diag(diag::err_drv_argument_only_allowed_with)
3271 << A->getAsString(Args) << "-gdwarf-5";
3272 else if (checkDebugInfoOption(A, Args, D, TC))
3273 CmdArgs.push_back("-gembed-source");
3277 CmdArgs.push_back("-gcodeview");
3279 // Emit codeview type hashes if requested.
3280 if (Args.hasFlag(options::OPT_gcodeview_ghash,
3281 options::OPT_gno_codeview_ghash, false)) {
3282 CmdArgs.push_back("-gcodeview-ghash");
3286 // Adjust the debug info kind for the given toolchain.
3287 TC.adjustDebugInfoKind(DebugInfoKind, Args);
3289 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3292 // -fdebug-macro turns on macro debug info generation.
3293 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3295 if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
3297 CmdArgs.push_back("-debug-info-macro");
3299 // -ggnu-pubnames turns on gnu style pubnames in the backend.
3300 const auto *PubnamesArg =
3301 Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3302 options::OPT_gpubnames, options::OPT_gno_pubnames);
3303 if (DwarfFission != DwarfFissionKind::None ||
3304 DebuggerTuning == llvm::DebuggerKind::LLDB ||
3305 (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
3307 (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
3308 !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
3309 CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
3310 options::OPT_gpubnames)
3312 : "-ggnu-pubnames");
3314 if (Args.hasFlag(options::OPT_fdebug_ranges_base_address,
3315 options::OPT_fno_debug_ranges_base_address, false)) {
3316 CmdArgs.push_back("-fdebug-ranges-base-address");
3319 // -gdwarf-aranges turns on the emission of the aranges section in the
3321 // Always enabled for SCE tuning.
3322 bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
3323 if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
3324 NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
3326 CmdArgs.push_back("-mllvm");
3327 CmdArgs.push_back("-generate-arange-section");
3330 if (Args.hasFlag(options::OPT_fdebug_types_section,
3331 options::OPT_fno_debug_types_section, false)) {
3332 if (!T.isOSBinFormatELF()) {
3333 D.Diag(diag::err_drv_unsupported_opt_for_target)
3334 << Args.getLastArg(options::OPT_fdebug_types_section)
3337 } else if (checkDebugInfoOption(
3338 Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
3340 CmdArgs.push_back("-mllvm");
3341 CmdArgs.push_back("-generate-type-units");
3345 // Decide how to render forward declarations of template instantiations.
3346 // SCE wants full descriptions, others just get them in the name.
3347 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3348 CmdArgs.push_back("-debug-forward-template-params");
3350 // Do we need to explicitly import anonymous namespaces into the parent
3352 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3353 CmdArgs.push_back("-dwarf-explicit-import");
3355 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
3358 void Clang::ConstructJob(Compilation &C, const JobAction &JA,
3359 const InputInfo &Output, const InputInfoList &Inputs,
3360 const ArgList &Args, const char *LinkingOutput) const {
3361 const auto &TC = getToolChain();
3362 const llvm::Triple &RawTriple = TC.getTriple();
3363 const llvm::Triple &Triple = TC.getEffectiveTriple();
3364 const std::string &TripleStr = Triple.getTriple();
3367 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3368 const Driver &D = TC.getDriver();
3369 ArgStringList CmdArgs;
3371 // Check number of inputs for sanity. We need at least one input.
3372 assert(Inputs.size() >= 1 && "Must have at least one input.");
3373 // CUDA/HIP compilation may have multiple inputs (source file + results of
3374 // device-side compilations). OpenMP device jobs also take the host IR as a
3375 // second input. Module precompilation accepts a list of header files to
3376 // include as part of the module. All other jobs are expected to have exactly
3378 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3379 bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3380 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3381 bool IsHeaderModulePrecompile = isa<HeaderModulePrecompileJobAction>(JA);
3383 // A header module compilation doesn't have a main input file, so invent a
3384 // fake one as a placeholder.
3385 const char *ModuleName = [&]{
3386 auto *ModuleNameArg = Args.getLastArg(options::OPT_fmodule_name_EQ);
3387 return ModuleNameArg ? ModuleNameArg->getValue() : "";
3389 InputInfo HeaderModuleInput(Inputs[0].getType(), ModuleName, ModuleName);
3391 const InputInfo &Input =
3392 IsHeaderModulePrecompile ? HeaderModuleInput : Inputs[0];
3394 InputInfoList ModuleHeaderInputs;
3395 const InputInfo *CudaDeviceInput = nullptr;
3396 const InputInfo *OpenMPDeviceInput = nullptr;
3397 for (const InputInfo &I : Inputs) {
3399 // This is the primary input.
3400 } else if (IsHeaderModulePrecompile &&
3401 types::getPrecompiledType(I.getType()) == types::TY_PCH) {
3402 types::ID Expected = HeaderModuleInput.getType();
3403 if (I.getType() != Expected) {
3404 D.Diag(diag::err_drv_module_header_wrong_kind)
3405 << I.getFilename() << types::getTypeName(I.getType())
3406 << types::getTypeName(Expected);
3408 ModuleHeaderInputs.push_back(I);
3409 } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
3410 CudaDeviceInput = &I;
3411 } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
3412 OpenMPDeviceInput = &I;
3414 llvm_unreachable("unexpectedly given multiple inputs");
3418 const llvm::Triple *AuxTriple = IsCuda ? TC.getAuxTriple() : nullptr;
3419 bool IsWindowsGNU = RawTriple.isWindowsGNUEnvironment();
3420 bool IsWindowsCygnus = RawTriple.isWindowsCygwinEnvironment();
3421 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3422 bool IsIAMCU = RawTriple.isOSIAMCU();
3424 // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3425 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3426 // Windows), we need to pass Windows-specific flags to cc1.
3427 if (IsCuda || IsHIP) {
3428 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3429 IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
3430 IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
3433 // C++ is not supported for IAMCU.
3434 if (IsIAMCU && types::isCXX(Input.getType()))
3435 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3437 // Invoke ourselves in -cc1 mode.
3439 // FIXME: Implement custom jobs for internal actions.
3440 CmdArgs.push_back("-cc1");
3442 // Add the "effective" target triple.
3443 CmdArgs.push_back("-triple");
3444 CmdArgs.push_back(Args.MakeArgString(TripleStr));
3446 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3447 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3448 Args.ClaimAllArgs(options::OPT_MJ);
3451 if (IsCuda || IsHIP) {
3452 // We have to pass the triple of the host if compiling for a CUDA/HIP device
3454 std::string NormalizedTriple;
3455 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
3456 JA.isDeviceOffloading(Action::OFK_HIP))
3457 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3462 (IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
3463 : C.getSingleOffloadToolChain<Action::OFK_HIP>())
3467 CmdArgs.push_back("-aux-triple");
3468 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3471 if (IsOpenMPDevice) {
3472 // We have to pass the triple of the host if compiling for an OpenMP device.
3473 std::string NormalizedTriple =
3474 C.getSingleOffloadToolChain<Action::OFK_Host>()
3477 CmdArgs.push_back("-aux-triple");
3478 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3481 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3482 Triple.getArch() == llvm::Triple::thumb)) {
3483 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3485 Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3487 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3491 // Push all default warning arguments that are specific to
3492 // the given target. These come before user provided warning options
3494 TC.addClangWarningOptions(CmdArgs);
3496 // Select the appropriate action.
3497 RewriteKind rewriteKind = RK_None;
3499 if (isa<AnalyzeJobAction>(JA)) {
3500 assert(JA.getType() == types::TY_Plist && "Invalid output type.");
3501 CmdArgs.push_back("-analyze");
3502 } else if (isa<MigrateJobAction>(JA)) {
3503 CmdArgs.push_back("-migrate");
3504 } else if (isa<PreprocessJobAction>(JA)) {
3505 if (Output.getType() == types::TY_Dependencies)
3506 CmdArgs.push_back("-Eonly");
3508 CmdArgs.push_back("-E");
3509 if (Args.hasArg(options::OPT_rewrite_objc) &&
3510 !Args.hasArg(options::OPT_g_Group))
3511 CmdArgs.push_back("-P");
3513 } else if (isa<AssembleJobAction>(JA)) {
3514 CmdArgs.push_back("-emit-obj");
3516 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3518 // Also ignore explicit -force_cpusubtype_ALL option.
3519 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3520 } else if (isa<PrecompileJobAction>(JA)) {
3521 if (JA.getType() == types::TY_Nothing)
3522 CmdArgs.push_back("-fsyntax-only");
3523 else if (JA.getType() == types::TY_ModuleFile)
3524 CmdArgs.push_back(IsHeaderModulePrecompile
3525 ? "-emit-header-module"
3526 : "-emit-module-interface");
3528 CmdArgs.push_back("-emit-pch");
3529 } else if (isa<VerifyPCHJobAction>(JA)) {
3530 CmdArgs.push_back("-verify-pch");
3532 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
3533 "Invalid action for clang tool.");
3534 if (JA.getType() == types::TY_Nothing) {
3535 CmdArgs.push_back("-fsyntax-only");
3536 } else if (JA.getType() == types::TY_LLVM_IR ||
3537 JA.getType() == types::TY_LTO_IR) {
3538 CmdArgs.push_back("-emit-llvm");
3539 } else if (JA.getType() == types::TY_LLVM_BC ||
3540 JA.getType() == types::TY_LTO_BC) {
3541 CmdArgs.push_back("-emit-llvm-bc");
3542 } else if (JA.getType() == types::TY_PP_Asm) {
3543 CmdArgs.push_back("-S");
3544 } else if (JA.getType() == types::TY_AST) {
3545 CmdArgs.push_back("-emit-pch");
3546 } else if (JA.getType() == types::TY_ModuleFile) {
3547 CmdArgs.push_back("-module-file-info");
3548 } else if (JA.getType() == types::TY_RewrittenObjC) {
3549 CmdArgs.push_back("-rewrite-objc");
3550 rewriteKind = RK_NonFragile;
3551 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3552 CmdArgs.push_back("-rewrite-objc");
3553 rewriteKind = RK_Fragile;
3555 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
3558 // Preserve use-list order by default when emitting bitcode, so that
3559 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3560 // same result as running passes here. For LTO, we don't need to preserve
3561 // the use-list order, since serialization to bitcode is part of the flow.
3562 if (JA.getType() == types::TY_LLVM_BC)
3563 CmdArgs.push_back("-emit-llvm-uselists");
3565 // Device-side jobs do not support LTO.
3566 bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
3567 JA.isDeviceOffloading(Action::OFK_Host));
3569 if (D.isUsingLTO() && !isDeviceOffloadAction) {
3570 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3572 // The Darwin and PS4 linkers currently use the legacy LTO API, which
3573 // does not support LTO unit features (CFI, whole program vtable opt)
3575 if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3576 D.getLTOMode() == LTOK_Full)
3577 CmdArgs.push_back("-flto-unit");
3581 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3582 if (!types::isLLVMIR(Input.getType()))
3583 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
3585 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3588 if (Args.getLastArg(options::OPT_save_temps_EQ))
3589 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
3591 // Embed-bitcode option.
3592 // Only white-listed flags below are allowed to be embedded.
3593 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3594 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3595 // Add flags implied by -fembed-bitcode.
3596 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3597 // Disable all llvm IR level optimizations.
3598 CmdArgs.push_back("-disable-llvm-passes");
3600 // reject options that shouldn't be supported in bitcode
3601 // also reject kernel/kext
3602 static const constexpr unsigned kBitcodeOptionBlacklist[] = {
3603 options::OPT_mkernel,
3604 options::OPT_fapple_kext,
3605 options::OPT_ffunction_sections,
3606 options::OPT_fno_function_sections,
3607 options::OPT_fdata_sections,
3608 options::OPT_fno_data_sections,
3609 options::OPT_funique_section_names,
3610 options::OPT_fno_unique_section_names,
3611 options::OPT_mrestrict_it,
3612 options::OPT_mno_restrict_it,
3613 options::OPT_mstackrealign,
3614 options::OPT_mno_stackrealign,
3615 options::OPT_mstack_alignment,
3616 options::OPT_mcmodel_EQ,
3617 options::OPT_mlong_calls,
3618 options::OPT_mno_long_calls,
3619 options::OPT_ggnu_pubnames,
3620 options::OPT_gdwarf_aranges,
3621 options::OPT_fdebug_types_section,
3622 options::OPT_fno_debug_types_section,
3623 options::OPT_fdwarf_directory_asm,
3624 options::OPT_fno_dwarf_directory_asm,
3625 options::OPT_mrelax_all,
3626 options::OPT_mno_relax_all,
3627 options::OPT_ftrap_function_EQ,
3628 options::OPT_ffixed_r9,
3629 options::OPT_mfix_cortex_a53_835769,
3630 options::OPT_mno_fix_cortex_a53_835769,
3631 options::OPT_ffixed_x18,
3632 options::OPT_mglobal_merge,
3633 options::OPT_mno_global_merge,
3634 options::OPT_mred_zone,
3635 options::OPT_mno_red_zone,
3636 options::OPT_Wa_COMMA,
3637 options::OPT_Xassembler,
3640 for (const auto &A : Args)
3641 if (std::find(std::begin(kBitcodeOptionBlacklist),
3642 std::end(kBitcodeOptionBlacklist),
3643 A->getOption().getID()) !=
3644 std::end(kBitcodeOptionBlacklist))
3645 D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
3647 // Render the CodeGen options that need to be passed.
3648 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3649 options::OPT_fno_optimize_sibling_calls))
3650 CmdArgs.push_back("-mdisable-tail-calls");
3652 RenderFloatingPointOptions(TC, D, isOptimizationLevelFast(Args), Args,
3655 // Render ABI arguments
3656 switch (TC.getArch()) {
3658 case llvm::Triple::arm:
3659 case llvm::Triple::armeb:
3660 case llvm::Triple::thumbeb:
3661 RenderARMABI(Triple, Args, CmdArgs);
3663 case llvm::Triple::aarch64:
3664 case llvm::Triple::aarch64_be:
3665 RenderAArch64ABI(Triple, Args, CmdArgs);
3669 // Optimization level for CodeGen.
3670 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3671 if (A->getOption().matches(options::OPT_O4)) {
3672 CmdArgs.push_back("-O3");
3673 D.Diag(diag::warn_O4_is_O3);
3675 A->render(Args, CmdArgs);
3679 // Input/Output file.
3680 if (Output.getType() == types::TY_Dependencies) {
3681 // Handled with other dependency code.
3682 } else if (Output.isFilename()) {
3683 CmdArgs.push_back("-o");
3684 CmdArgs.push_back(Output.getFilename());
3686 assert(Output.isNothing() && "Input output.");
3689 for (const auto &II : Inputs) {
3690 addDashXForInput(Args, II, CmdArgs);
3691 if (II.isFilename())
3692 CmdArgs.push_back(II.getFilename());
3694 II.getInputArg().renderAsInput(Args, CmdArgs);
3697 C.addCommand(llvm::make_unique<Command>(JA, *this, D.getClangProgramPath(),
3702 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
3703 CmdArgs.push_back("-fembed-bitcode=marker");
3705 // We normally speed up the clang process a bit by skipping destructors at
3706 // exit, but when we're generating diagnostics we can rely on some of the
3708 if (!C.isForDiagnostics())
3709 CmdArgs.push_back("-disable-free");
3712 const bool IsAssertBuild = false;
3714 const bool IsAssertBuild = true;
3717 // Disable the verification pass in -asserts builds.
3719 CmdArgs.push_back("-disable-llvm-verifier");
3721 // Discard value names in assert builds unless otherwise specified.
3722 if (Args.hasFlag(options::OPT_fdiscard_value_names,
3723 options::OPT_fno_discard_value_names, !IsAssertBuild))
3724 CmdArgs.push_back("-discard-value-names");
3726 // Set the main file name, so that debug info works even with
3728 CmdArgs.push_back("-main-file-name");
3729 CmdArgs.push_back(getBaseInputName(Args, Input));
3731 // Some flags which affect the language (via preprocessor
3733 if (Args.hasArg(options::OPT_static))
3734 CmdArgs.push_back("-static-define");
3736 if (Args.hasArg(options::OPT_municode))
3737 CmdArgs.push_back("-DUNICODE");
3739 if (isa<AnalyzeJobAction>(JA))
3740 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3742 // Enable compatilibily mode to avoid analyzer-config related errors.
3743 // Since we can't access frontend flags through hasArg, let's manually iterate
3745 bool FoundAnalyzerConfig = false;
3746 for (auto Arg : Args.filtered(options::OPT_Xclang))
3747 if (StringRef(Arg->getValue()) == "-analyzer-config") {
3748 FoundAnalyzerConfig = true;
3751 if (!FoundAnalyzerConfig)
3752 for (auto Arg : Args.filtered(options::OPT_Xanalyzer))
3753 if (StringRef(Arg->getValue()) == "-analyzer-config") {
3754 FoundAnalyzerConfig = true;
3757 if (FoundAnalyzerConfig)
3758 CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
3760 CheckCodeGenerationOptions(D, Args);
3762 unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
3763 assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
3764 if (FunctionAlignment) {
3765 CmdArgs.push_back("-function-alignment");
3766 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
3769 llvm::Reloc::Model RelocationModel;
3772 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
3774 const char *RMName = RelocationModelName(RelocationModel);
3776 if ((RelocationModel == llvm::Reloc::ROPI ||
3777 RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3778 types::isCXX(Input.getType()) &&
3779 !Args.hasArg(options::OPT_fallow_unsupported))
3780 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3783 CmdArgs.push_back("-mrelocation-model");
3784 CmdArgs.push_back(RMName);
3787 CmdArgs.push_back("-pic-level");
3788 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3790 CmdArgs.push_back("-pic-is-pie");
3793 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3794 CmdArgs.push_back("-meabi");
3795 CmdArgs.push_back(A->getValue());
3798 CmdArgs.push_back("-mthread-model");
3799 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3800 if (!TC.isThreadModelSupported(A->getValue()))
3801 D.Diag(diag::err_drv_invalid_thread_model_for_target)
3802 << A->getValue() << A->getAsString(Args);
3803 CmdArgs.push_back(A->getValue());
3806 CmdArgs.push_back(Args.MakeArgString(TC.getThreadModel()));
3808 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3810 if (Args.hasFlag(options::OPT_fmerge_all_constants,
3811 options::OPT_fno_merge_all_constants, false))
3812 CmdArgs.push_back("-fmerge-all-constants");
3814 if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
3815 options::OPT_fdelete_null_pointer_checks, false))
3816 CmdArgs.push_back("-fno-delete-null-pointer-checks");
3818 // LLVM Code Generator Options.
3820 if (Args.hasArg(options::OPT_frewrite_map_file) ||
3821 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3822 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3823 options::OPT_frewrite_map_file_EQ)) {
3824 StringRef Map = A->getValue();
3825 if (!llvm::sys::fs::exists(Map)) {
3826 D.Diag(diag::err_drv_no_such_file) << Map;
3828 CmdArgs.push_back("-frewrite-map-file");
3829 CmdArgs.push_back(A->getValue());
3835 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3836 StringRef v = A->getValue();
3837 CmdArgs.push_back("-mllvm");
3838 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3842 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3844 CmdArgs.push_back("-fno-jump-tables");
3846 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3847 options::OPT_fno_profile_sample_accurate, false))
3848 CmdArgs.push_back("-fprofile-sample-accurate");
3850 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3851 options::OPT_fno_preserve_as_comments, true))
3852 CmdArgs.push_back("-fno-preserve-as-comments");
3854 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3855 CmdArgs.push_back("-mregparm");
3856 CmdArgs.push_back(A->getValue());
3859 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3860 options::OPT_freg_struct_return)) {
3861 if (TC.getArch() != llvm::Triple::x86) {
3862 D.Diag(diag::err_drv_unsupported_opt_for_target)
3863 << A->getSpelling() << RawTriple.str();
3864 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3865 CmdArgs.push_back("-fpcc-struct-return");
3867 assert(A->getOption().matches(options::OPT_freg_struct_return));
3868 CmdArgs.push_back("-freg-struct-return");
3872 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3873 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3875 if (shouldUseFramePointer(Args, RawTriple))
3876 CmdArgs.push_back("-mdisable-fp-elim");
3877 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3878 options::OPT_fno_zero_initialized_in_bss))
3879 CmdArgs.push_back("-mno-zero-initialized-in-bss");
3881 bool OFastEnabled = isOptimizationLevelFast(Args);
3882 // If -Ofast is the optimization level, then -fstrict-aliasing should be
3883 // enabled. This alias option is being used to simplify the hasFlag logic.
3884 OptSpecifier StrictAliasingAliasOption =
3885 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3886 // We turn strict aliasing off by default if we're in CL mode, since MSVC
3887 // doesn't do any TBAA.
3888 bool TBAAOnByDefault = !D.IsCLMode();
3889 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3890 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3891 CmdArgs.push_back("-relaxed-aliasing");
3892 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3893 options::OPT_fno_struct_path_tbaa))
3894 CmdArgs.push_back("-no-struct-path-tbaa");
3895 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3897 CmdArgs.push_back("-fstrict-enums");
3898 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3900 CmdArgs.push_back("-fno-strict-return");
3901 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3902 options::OPT_fno_allow_editor_placeholders, false))
3903 CmdArgs.push_back("-fallow-editor-placeholders");
3904 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3905 options::OPT_fno_strict_vtable_pointers,
3907 CmdArgs.push_back("-fstrict-vtable-pointers");
3908 if (Args.hasFlag(options::OPT_fforce_emit_vtables,
3909 options::OPT_fno_force_emit_vtables,
3911 CmdArgs.push_back("-fforce-emit-vtables");
3912 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3913 options::OPT_fno_optimize_sibling_calls))
3914 CmdArgs.push_back("-mdisable-tail-calls");
3915 if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
3916 options::OPT_fescaping_block_tail_calls, false))
3917 CmdArgs.push_back("-fno-escaping-block-tail-calls");
3919 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
3920 options::OPT_fno_fine_grained_bitfield_accesses);
3922 // Handle segmented stacks.
3923 if (Args.hasArg(options::OPT_fsplit_stack))
3924 CmdArgs.push_back("-split-stacks");
3926 RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs);
3928 // Decide whether to use verbose asm. Verbose assembly is the default on
3929 // toolchains which have the integrated assembler on by default.
3930 bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
3931 if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
3932 IsIntegratedAssemblerDefault) ||
3933 Args.hasArg(options::OPT_dA))
3934 CmdArgs.push_back("-masm-verbose");
3936 if (!TC.useIntegratedAs())
3937 CmdArgs.push_back("-no-integrated-as");
3939 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
3940 CmdArgs.push_back("-mdebug-pass");
3941 CmdArgs.push_back("Structure");
3943 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
3944 CmdArgs.push_back("-mdebug-pass");
3945 CmdArgs.push_back("Arguments");
3948 // Enable -mconstructor-aliases except on darwin, where we have to work around
3949 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
3950 // aliases aren't supported.
3951 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
3952 CmdArgs.push_back("-mconstructor-aliases");
3954 // Darwin's kernel doesn't support guard variables; just die if we
3956 if (KernelOrKext && RawTriple.isOSDarwin())
3957 CmdArgs.push_back("-fforbid-guard-variables");
3959 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
3961 CmdArgs.push_back("-mms-bitfields");
3964 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
3965 options::OPT_mno_pie_copy_relocations,
3967 CmdArgs.push_back("-mpie-copy-relocations");
3970 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
3971 CmdArgs.push_back("-fno-plt");
3974 // -fhosted is default.
3975 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
3976 // use Freestanding.
3978 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3981 CmdArgs.push_back("-ffreestanding");
3983 // This is a coarse approximation of what llvm-gcc actually does, both
3984 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
3985 // complicated ways.
3986 bool AsynchronousUnwindTables =
3987 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
3988 options::OPT_fno_asynchronous_unwind_tables,
3989 (TC.IsUnwindTablesDefault(Args) ||
3990 TC.getSanitizerArgs().needsUnwindTables()) &&
3992 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
3993 AsynchronousUnwindTables))
3994 CmdArgs.push_back("-munwind-tables");
3996 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
3998 // FIXME: Handle -mtune=.
3999 (void)Args.hasArg(options::OPT_mtune_EQ);
4001 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
4002 CmdArgs.push_back("-mcode-model");
4003 CmdArgs.push_back(A->getValue());
4006 // Add the target cpu
4007 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
4009 CmdArgs.push_back("-target-cpu");
4010 CmdArgs.push_back(Args.MakeArgString(CPU));
4013 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
4015 // These two are potentially updated by AddClangCLArgs.
4016 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
4017 bool EmitCodeView = false;
4019 // Add clang-cl arguments.
4020 types::ID InputType = Input.getType();
4022 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
4024 DwarfFissionKind DwarfFission;
4025 RenderDebugOptions(TC, D, RawTriple, Args, EmitCodeView, IsWindowsMSVC,
4026 CmdArgs, DebugInfoKind, DwarfFission);
4028 // Add the split debug info name to the command lines here so we
4029 // can propagate it to the backend.
4030 bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
4031 (RawTriple.isOSLinux() || RawTriple.isOSFuchsia()) &&
4032 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4033 isa<BackendJobAction>(JA));
4034 const char *SplitDWARFOut;
4036 CmdArgs.push_back("-split-dwarf-file");
4037 SplitDWARFOut = SplitDebugName(Args, Output);
4038 CmdArgs.push_back(SplitDWARFOut);
4041 // Pass the linker version in use.
4042 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
4043 CmdArgs.push_back("-target-linker-version");
4044 CmdArgs.push_back(A->getValue());
4047 if (!shouldUseLeafFramePointer(Args, RawTriple))
4048 CmdArgs.push_back("-momit-leaf-frame-pointer");
4050 // Explicitly error on some things we know we don't support and can't just
4052 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
4054 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
4055 TC.getArch() == llvm::Triple::x86) {
4056 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
4057 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
4058 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
4059 << Unsupported->getOption().getName();
4061 // The faltivec option has been superseded by the maltivec option.
4062 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
4063 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4064 << Unsupported->getOption().getName()
4065 << "please use -maltivec and include altivec.h explicitly";
4066 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
4067 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4068 << Unsupported->getOption().getName() << "please use -mno-altivec";
4071 Args.AddAllArgs(CmdArgs, options::OPT_v);
4072 Args.AddLastArg(CmdArgs, options::OPT_H);
4073 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
4074 CmdArgs.push_back("-header-include-file");
4075 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
4078 Args.AddLastArg(CmdArgs, options::OPT_P);
4079 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
4081 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
4082 CmdArgs.push_back("-diagnostic-log-file");
4083 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
4087 bool UseSeparateSections = isUseSeparateSections(Triple);
4089 if (Args.hasFlag(options::OPT_ffunction_sections,
4090 options::OPT_fno_function_sections, UseSeparateSections)) {
4091 CmdArgs.push_back("-ffunction-sections");
4094 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
4095 UseSeparateSections)) {
4096 CmdArgs.push_back("-fdata-sections");
4099 if (!Args.hasFlag(options::OPT_funique_section_names,
4100 options::OPT_fno_unique_section_names, true))
4101 CmdArgs.push_back("-fno-unique-section-names");
4103 if (auto *A = Args.getLastArg(
4104 options::OPT_finstrument_functions,
4105 options::OPT_finstrument_functions_after_inlining,
4106 options::OPT_finstrument_function_entry_bare))
4107 A->render(Args, CmdArgs);
4109 // NVPTX doesn't support PGO or coverage. There's no runtime support for
4110 // sampling, overhead of call arc collection is way too high and there's no
4111 // way to collect the output.
4112 if (!Triple.isNVPTX())
4113 addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
4115 if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
4116 ABICompatArg->render(Args, CmdArgs);
4118 // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
4119 if (RawTriple.isPS4CPU() &&
4120 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
4121 PS4cpu::addProfileRTArgs(TC, Args, CmdArgs);
4122 PS4cpu::addSanitizerArgs(TC, CmdArgs);
4125 // Pass options for controlling the default header search paths.
4126 if (Args.hasArg(options::OPT_nostdinc)) {
4127 CmdArgs.push_back("-nostdsysteminc");
4128 CmdArgs.push_back("-nobuiltininc");
4130 if (Args.hasArg(options::OPT_nostdlibinc))
4131 CmdArgs.push_back("-nostdsysteminc");
4132 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
4133 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
4136 // Pass the path to compiler resource files.
4137 CmdArgs.push_back("-resource-dir");
4138 CmdArgs.push_back(D.ResourceDir.c_str());
4140 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
4142 RenderARCMigrateToolOptions(D, Args, CmdArgs);
4144 // Add preprocessing options like -I, -D, etc. if we are using the
4147 // FIXME: Support -fpreprocessed
4148 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
4149 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
4151 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
4152 // that "The compiler can only warn and ignore the option if not recognized".
4153 // When building with ccache, it will pass -D options to clang even on
4154 // preprocessed inputs and configure concludes that -fPIC is not supported.
4155 Args.ClaimAllArgs(options::OPT_D);
4157 // Manually translate -O4 to -O3; let clang reject others.
4158 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4159 if (A->getOption().matches(options::OPT_O4)) {
4160 CmdArgs.push_back("-O3");
4161 D.Diag(diag::warn_O4_is_O3);
4163 A->render(Args, CmdArgs);
4167 // Warn about ignored options to clang.
4169 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
4170 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
4175 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
4176 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
4180 claimNoWarnArgs(Args);
4182 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
4184 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
4185 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
4186 CmdArgs.push_back("-pedantic");
4187 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
4188 Args.AddLastArg(CmdArgs, options::OPT_w);
4190 // Fixed point flags
4191 if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
4193 Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
4195 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
4196 // (-ansi is equivalent to -std=c89 or -std=c++98).
4198 // If a std is supplied, only add -trigraphs if it follows the
4200 bool ImplyVCPPCXXVer = false;
4201 if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
4202 if (Std->getOption().matches(options::OPT_ansi))
4203 if (types::isCXX(InputType))
4204 CmdArgs.push_back("-std=c++98");
4206 CmdArgs.push_back("-std=c89");
4208 Std->render(Args, CmdArgs);
4210 // If -f(no-)trigraphs appears after the language standard flag, honor it.
4211 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
4212 options::OPT_ftrigraphs,
4213 options::OPT_fno_trigraphs))
4215 A->render(Args, CmdArgs);
4217 // Honor -std-default.
4219 // FIXME: Clang doesn't correctly handle -std= when the input language
4220 // doesn't match. For the time being just ignore this for C++ inputs;
4221 // eventually we want to do all the standard defaulting here instead of
4222 // splitting it between the driver and clang -cc1.
4223 if (!types::isCXX(InputType))
4224 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
4226 else if (IsWindowsMSVC)
4227 ImplyVCPPCXXVer = true;
4229 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
4230 options::OPT_fno_trigraphs);
4233 // GCC's behavior for -Wwrite-strings is a bit strange:
4234 // * In C, this "warning flag" changes the types of string literals from
4235 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
4236 // for the discarded qualifier.
4237 // * In C++, this is just a normal warning flag.
4239 // Implementing this warning correctly in C is hard, so we follow GCC's
4240 // behavior for now. FIXME: Directly diagnose uses of a string literal as
4241 // a non-const char* in C, rather than using this crude hack.
4242 if (!types::isCXX(InputType)) {
4243 // FIXME: This should behave just like a warning flag, and thus should also
4244 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
4246 Args.getLastArg(options::OPT_Wwrite_strings,
4247 options::OPT_Wno_write_strings, options::OPT_w);
4249 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
4250 CmdArgs.push_back("-fconst-strings");
4253 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
4254 // during C++ compilation, which it is by default. GCC keeps this define even
4255 // in the presence of '-w', match this behavior bug-for-bug.
4256 if (types::isCXX(InputType) &&
4257 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
4259 CmdArgs.push_back("-fdeprecated-macro");
4262 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
4263 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
4264 if (Asm->getOption().matches(options::OPT_fasm))
4265 CmdArgs.push_back("-fgnu-keywords");
4267 CmdArgs.push_back("-fno-gnu-keywords");
4270 if (ShouldDisableDwarfDirectory(Args, TC))
4271 CmdArgs.push_back("-fno-dwarf-directory-asm");
4273 if (ShouldDisableAutolink(Args, TC))
4274 CmdArgs.push_back("-fno-autolink");
4276 // Add in -fdebug-compilation-dir if necessary.
4277 addDebugCompDirArg(Args, CmdArgs);
4279 addDebugPrefixMapArg(D, Args, CmdArgs);
4281 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
4282 options::OPT_ftemplate_depth_EQ)) {
4283 CmdArgs.push_back("-ftemplate-depth");
4284 CmdArgs.push_back(A->getValue());
4287 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
4288 CmdArgs.push_back("-foperator-arrow-depth");
4289 CmdArgs.push_back(A->getValue());
4292 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
4293 CmdArgs.push_back("-fconstexpr-depth");
4294 CmdArgs.push_back(A->getValue());
4297 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
4298 CmdArgs.push_back("-fconstexpr-steps");
4299 CmdArgs.push_back(A->getValue());
4302 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
4303 CmdArgs.push_back("-fbracket-depth");
4304 CmdArgs.push_back(A->getValue());
4307 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
4308 options::OPT_Wlarge_by_value_copy_def)) {
4309 if (A->getNumValues()) {
4310 StringRef bytes = A->getValue();
4311 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
4313 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
4316 if (Args.hasArg(options::OPT_relocatable_pch))
4317 CmdArgs.push_back("-relocatable-pch");
4319 if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
4320 static const char *kCFABIs[] = {
4321 "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
4324 if (find(kCFABIs, StringRef(A->getValue())) == std::end(kCFABIs))
4325 D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
4327 A->render(Args, CmdArgs);
4330 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
4331 CmdArgs.push_back("-fconstant-string-class");
4332 CmdArgs.push_back(A->getValue());
4335 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
4336 CmdArgs.push_back("-ftabstop");
4337 CmdArgs.push_back(A->getValue());
4340 if (Args.hasFlag(options::OPT_fstack_size_section,
4341 options::OPT_fno_stack_size_section, RawTriple.isPS4()))
4342 CmdArgs.push_back("-fstack-size-section");
4344 CmdArgs.push_back("-ferror-limit");
4345 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
4346 CmdArgs.push_back(A->getValue());
4348 CmdArgs.push_back("19");
4350 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
4351 CmdArgs.push_back("-fmacro-backtrace-limit");
4352 CmdArgs.push_back(A->getValue());
4355 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
4356 CmdArgs.push_back("-ftemplate-backtrace-limit");
4357 CmdArgs.push_back(A->getValue());
4360 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
4361 CmdArgs.push_back("-fconstexpr-backtrace-limit");
4362 CmdArgs.push_back(A->getValue());
4365 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
4366 CmdArgs.push_back("-fspell-checking-limit");
4367 CmdArgs.push_back(A->getValue());
4370 // Pass -fmessage-length=.
4371 CmdArgs.push_back("-fmessage-length");
4372 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
4373 CmdArgs.push_back(A->getValue());
4375 // If -fmessage-length=N was not specified, determine whether this is a
4376 // terminal and, if so, implicitly define -fmessage-length appropriately.
4377 unsigned N = llvm::sys::Process::StandardErrColumns();
4378 CmdArgs.push_back(Args.MakeArgString(Twine(N)));
4381 // -fvisibility= and -fvisibility-ms-compat are of a piece.
4382 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
4383 options::OPT_fvisibility_ms_compat)) {
4384 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
4385 CmdArgs.push_back("-fvisibility");
4386 CmdArgs.push_back(A->getValue());
4388 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
4389 CmdArgs.push_back("-fvisibility");
4390 CmdArgs.push_back("hidden");
4391 CmdArgs.push_back("-ftype-visibility");
4392 CmdArgs.push_back("default");
4396 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
4397 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
4399 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
4401 // Forward -f (flag) options which we can pass directly.
4402 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
4403 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
4404 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
4405 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
4406 Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
4407 options::OPT_fno_emulated_tls);
4408 Args.AddLastArg(CmdArgs, options::OPT_fkeep_static_consts);
4410 // AltiVec-like language extensions aren't relevant for assembling.
4411 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
4412 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
4414 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
4415 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
4417 // Forward flags for OpenMP. We don't do this if the current action is an
4418 // device offloading action other than OpenMP.
4419 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
4420 options::OPT_fno_openmp, false) &&
4421 (JA.isDeviceOffloading(Action::OFK_None) ||
4422 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
4423 switch (D.getOpenMPRuntime(Args)) {
4424 case Driver::OMPRT_OMP:
4425 case Driver::OMPRT_IOMP5:
4426 // Clang can generate useful OpenMP code for these two runtime libraries.
4427 CmdArgs.push_back("-fopenmp");
4429 // If no option regarding the use of TLS in OpenMP codegeneration is
4430 // given, decide a default based on the target. Otherwise rely on the
4431 // options and pass the right information to the frontend.
4432 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
4433 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
4434 CmdArgs.push_back("-fnoopenmp-use-tls");
4435 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4436 options::OPT_fno_openmp_simd);
4437 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4438 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
4439 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
4440 if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
4441 options::OPT_fno_openmp_optimistic_collapse,
4443 CmdArgs.push_back("-fopenmp-optimistic-collapse");
4445 // When in OpenMP offloading mode with NVPTX target, forward
4447 if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
4448 options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
4449 CmdArgs.push_back("-fopenmp-cuda-mode");
4451 // When in OpenMP offloading mode with NVPTX target, check if full runtime
4453 if (Args.hasFlag(options::OPT_fopenmp_cuda_force_full_runtime,
4454 options::OPT_fno_openmp_cuda_force_full_runtime,
4456 CmdArgs.push_back("-fopenmp-cuda-force-full-runtime");
4459 // By default, if Clang doesn't know how to generate useful OpenMP code
4460 // for a specific runtime library, we just don't pass the '-fopenmp' flag
4461 // down to the actual compilation.
4462 // FIXME: It would be better to have a mode which *only* omits IR
4463 // generation based on the OpenMP support so that we get consistent
4464 // semantic analysis, etc.
4468 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4469 options::OPT_fno_openmp_simd);
4470 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4473 const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
4474 Sanitize.addArgs(TC, Args, CmdArgs, InputType);
4476 const XRayArgs &XRay = TC.getXRayArgs();
4477 XRay.addArgs(TC, Args, CmdArgs, InputType);
4479 if (TC.SupportsProfiling())
4480 Args.AddLastArg(CmdArgs, options::OPT_pg);
4482 if (TC.SupportsProfiling())
4483 Args.AddLastArg(CmdArgs, options::OPT_mfentry);
4485 // -flax-vector-conversions is default.
4486 if (!Args.hasFlag(options::OPT_flax_vector_conversions,
4487 options::OPT_fno_lax_vector_conversions))
4488 CmdArgs.push_back("-fno-lax-vector-conversions");
4490 if (Args.getLastArg(options::OPT_fapple_kext) ||
4491 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
4492 CmdArgs.push_back("-fapple-kext");
4494 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
4495 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
4496 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
4497 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
4498 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
4500 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
4501 CmdArgs.push_back("-ftrapv-handler");
4502 CmdArgs.push_back(A->getValue());
4505 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
4507 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
4508 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
4509 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
4510 if (A->getOption().matches(options::OPT_fwrapv))
4511 CmdArgs.push_back("-fwrapv");
4512 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
4513 options::OPT_fno_strict_overflow)) {
4514 if (A->getOption().matches(options::OPT_fno_strict_overflow))
4515 CmdArgs.push_back("-fwrapv");
4518 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
4519 options::OPT_fno_reroll_loops))
4520 if (A->getOption().matches(options::OPT_freroll_loops))
4521 CmdArgs.push_back("-freroll-loops");
4523 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
4524 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
4525 options::OPT_fno_unroll_loops);
4527 Args.AddLastArg(CmdArgs, options::OPT_pthread);
4529 if (Args.hasFlag(options::OPT_mspeculative_load_hardening, options::OPT_mno_speculative_load_hardening,
4531 CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening"));
4533 RenderSSPOptions(TC, Args, CmdArgs, KernelOrKext);
4534 RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
4536 // Translate -mstackrealign
4537 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
4539 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
4541 if (Args.hasArg(options::OPT_mstack_alignment)) {
4542 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
4543 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
4546 if (Args.hasArg(options::OPT_mstack_probe_size)) {
4547 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
4550 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
4552 CmdArgs.push_back("-mstack-probe-size=0");
4555 if (!Args.hasFlag(options::OPT_mstack_arg_probe,
4556 options::OPT_mno_stack_arg_probe, true))
4557 CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
4559 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
4560 options::OPT_mno_restrict_it)) {
4561 if (A->getOption().matches(options::OPT_mrestrict_it)) {
4562 CmdArgs.push_back("-mllvm");
4563 CmdArgs.push_back("-arm-restrict-it");
4565 CmdArgs.push_back("-mllvm");
4566 CmdArgs.push_back("-arm-no-restrict-it");
4568 } else if (Triple.isOSWindows() &&
4569 (Triple.getArch() == llvm::Triple::arm ||
4570 Triple.getArch() == llvm::Triple::thumb)) {
4571 // Windows on ARM expects restricted IT blocks
4572 CmdArgs.push_back("-mllvm");
4573 CmdArgs.push_back("-arm-restrict-it");
4576 // Forward -cl options to -cc1
4577 RenderOpenCLOptions(Args, CmdArgs);
4579 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
4581 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
4584 // Forward -f options with positive and negative forms; we translate
4586 if (Arg *A = getLastProfileSampleUseArg(Args)) {
4587 StringRef fname = A->getValue();
4588 if (!llvm::sys::fs::exists(fname))
4589 D.Diag(diag::err_drv_no_such_file) << fname;
4591 A->render(Args, CmdArgs);
4593 Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
4595 RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
4597 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4598 options::OPT_fno_assume_sane_operator_new))
4599 CmdArgs.push_back("-fno-assume-sane-operator-new");
4601 // -fblocks=0 is default.
4602 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4603 TC.IsBlocksDefault()) ||
4604 (Args.hasArg(options::OPT_fgnu_runtime) &&
4605 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4606 !Args.hasArg(options::OPT_fno_blocks))) {
4607 CmdArgs.push_back("-fblocks");
4609 if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
4610 CmdArgs.push_back("-fblocks-runtime-optional");
4613 // -fencode-extended-block-signature=1 is default.
4614 if (TC.IsEncodeExtendedBlockSignatureDefault())
4615 CmdArgs.push_back("-fencode-extended-block-signature");
4617 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4619 types::isCXX(InputType)) {
4620 CmdArgs.push_back("-fcoroutines-ts");
4623 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4624 options::OPT_fno_double_square_bracket_attributes);
4626 bool HaveModules = false;
4627 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4629 // -faccess-control is default.
4630 if (Args.hasFlag(options::OPT_fno_access_control,
4631 options::OPT_faccess_control, false))
4632 CmdArgs.push_back("-fno-access-control");
4634 // -felide-constructors is the default.
4635 if (Args.hasFlag(options::OPT_fno_elide_constructors,
4636 options::OPT_felide_constructors, false))
4637 CmdArgs.push_back("-fno-elide-constructors");
4639 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
4641 if (KernelOrKext || (types::isCXX(InputType) &&
4642 (RTTIMode == ToolChain::RM_Disabled)))
4643 CmdArgs.push_back("-fno-rtti");
4645 // -fshort-enums=0 is default for all architectures except Hexagon.
4646 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4647 TC.getArch() == llvm::Triple::hexagon))
4648 CmdArgs.push_back("-fshort-enums");
4650 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4652 // -fuse-cxa-atexit is default.
4654 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4655 !RawTriple.isOSWindows() &&
4656 RawTriple.getOS() != llvm::Triple::Solaris &&
4657 TC.getArch() != llvm::Triple::xcore &&
4658 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4659 RawTriple.hasEnvironment())) ||
4661 CmdArgs.push_back("-fno-use-cxa-atexit");
4663 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
4664 options::OPT_fno_register_global_dtors_with_atexit,
4665 RawTriple.isOSDarwin() && !KernelOrKext))
4666 CmdArgs.push_back("-fregister-global-dtors-with-atexit");
4668 // -fms-extensions=0 is default.
4669 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4671 CmdArgs.push_back("-fms-extensions");
4673 // -fno-use-line-directives is default.
4674 if (Args.hasFlag(options::OPT_fuse_line_directives,
4675 options::OPT_fno_use_line_directives, false))
4676 CmdArgs.push_back("-fuse-line-directives");
4678 // -fms-compatibility=0 is default.
4679 if (Args.hasFlag(options::OPT_fms_compatibility,
4680 options::OPT_fno_ms_compatibility,
4682 Args.hasFlag(options::OPT_fms_extensions,
4683 options::OPT_fno_ms_extensions, true))))
4684 CmdArgs.push_back("-fms-compatibility");
4686 VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
4689 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4691 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4692 if (ImplyVCPPCXXVer) {
4693 StringRef LanguageStandard;
4694 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4695 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4696 .Case("c++14", "-std=c++14")
4697 .Case("c++17", "-std=c++17")
4698 .Case("c++latest", "-std=c++2a")
4700 if (LanguageStandard.empty())
4701 D.Diag(clang::diag::warn_drv_unused_argument)
4702 << StdArg->getAsString(Args);
4705 if (LanguageStandard.empty()) {
4706 if (IsMSVC2015Compatible)
4707 LanguageStandard = "-std=c++14";
4709 LanguageStandard = "-std=c++11";
4712 CmdArgs.push_back(LanguageStandard.data());
4715 // -fno-borland-extensions is default.
4716 if (Args.hasFlag(options::OPT_fborland_extensions,
4717 options::OPT_fno_borland_extensions, false))
4718 CmdArgs.push_back("-fborland-extensions");
4720 // -fno-declspec is default, except for PS4.
4721 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4723 CmdArgs.push_back("-fdeclspec");
4724 else if (Args.hasArg(options::OPT_fno_declspec))
4725 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4727 // -fthreadsafe-static is default, except for MSVC compatibility versions less
4729 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4730 options::OPT_fno_threadsafe_statics,
4731 !IsWindowsMSVC || IsMSVC2015Compatible))
4732 CmdArgs.push_back("-fno-threadsafe-statics");
4734 // -fno-delayed-template-parsing is default, except when targeting MSVC.
4735 // Many old Windows SDK versions require this to parse.
4736 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4737 // compiler. We should be able to disable this by default at some point.
4738 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4739 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4740 CmdArgs.push_back("-fdelayed-template-parsing");
4742 // -fgnu-keywords default varies depending on language; only pass if
4744 if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
4745 options::OPT_fno_gnu_keywords))
4746 A->render(Args, CmdArgs);
4748 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4750 CmdArgs.push_back("-fgnu89-inline");
4752 if (Args.hasArg(options::OPT_fno_inline))
4753 CmdArgs.push_back("-fno-inline");
4755 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
4756 options::OPT_finline_hint_functions,
4757 options::OPT_fno_inline_functions))
4758 InlineArg->render(Args, CmdArgs);
4760 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4761 options::OPT_fno_experimental_new_pass_manager);
4763 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4764 RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
4767 if (Args.hasFlag(options::OPT_fapplication_extension,
4768 options::OPT_fno_application_extension, false))
4769 CmdArgs.push_back("-fapplication-extension");
4771 // Handle GCC-style exception args.
4772 if (!C.getDriver().IsCLMode())
4773 addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
4775 // Handle exception personalities
4776 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4777 options::OPT_fseh_exceptions,
4778 options::OPT_fdwarf_exceptions);
4780 const Option &Opt = A->getOption();
4781 if (Opt.matches(options::OPT_fsjlj_exceptions))
4782 CmdArgs.push_back("-fsjlj-exceptions");
4783 if (Opt.matches(options::OPT_fseh_exceptions))
4784 CmdArgs.push_back("-fseh-exceptions");
4785 if (Opt.matches(options::OPT_fdwarf_exceptions))
4786 CmdArgs.push_back("-fdwarf-exceptions");
4788 switch (TC.GetExceptionModel(Args)) {
4791 case llvm::ExceptionHandling::DwarfCFI:
4792 CmdArgs.push_back("-fdwarf-exceptions");
4794 case llvm::ExceptionHandling::SjLj:
4795 CmdArgs.push_back("-fsjlj-exceptions");
4797 case llvm::ExceptionHandling::WinEH:
4798 CmdArgs.push_back("-fseh-exceptions");
4803 // C++ "sane" operator new.
4804 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4805 options::OPT_fno_assume_sane_operator_new))
4806 CmdArgs.push_back("-fno-assume-sane-operator-new");
4808 // -frelaxed-template-template-args is off by default, as it is a severe
4809 // breaking change until a corresponding change to template partial ordering
4811 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4812 options::OPT_fno_relaxed_template_template_args, false))
4813 CmdArgs.push_back("-frelaxed-template-template-args");
4815 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4817 if (Args.hasFlag(options::OPT_fsized_deallocation,
4818 options::OPT_fno_sized_deallocation, false))
4819 CmdArgs.push_back("-fsized-deallocation");
4821 // -faligned-allocation is on by default in C++17 onwards and otherwise off
4823 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4824 options::OPT_fno_aligned_allocation,
4825 options::OPT_faligned_new_EQ)) {
4826 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4827 CmdArgs.push_back("-fno-aligned-allocation");
4829 CmdArgs.push_back("-faligned-allocation");
4832 // The default new alignment can be specified using a dedicated option or via
4833 // a GCC-compatible option that also turns on aligned allocation.
4834 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4835 options::OPT_faligned_new_EQ))
4837 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4839 // -fconstant-cfstrings is default, and may be subject to argument translation
4841 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4842 options::OPT_fno_constant_cfstrings) ||
4843 !Args.hasFlag(options::OPT_mconstant_cfstrings,
4844 options::OPT_mno_constant_cfstrings))
4845 CmdArgs.push_back("-fno-constant-cfstrings");
4847 // -fno-pascal-strings is default, only pass non-default.
4848 if (Args.hasFlag(options::OPT_fpascal_strings,
4849 options::OPT_fno_pascal_strings, false))
4850 CmdArgs.push_back("-fpascal-strings");
4852 // Honor -fpack-struct= and -fpack-struct, if given. Note that
4853 // -fno-pack-struct doesn't apply to -fpack-struct=.
4854 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4855 std::string PackStructStr = "-fpack-struct=";
4856 PackStructStr += A->getValue();
4857 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4858 } else if (Args.hasFlag(options::OPT_fpack_struct,
4859 options::OPT_fno_pack_struct, false)) {
4860 CmdArgs.push_back("-fpack-struct=1");
4863 // Handle -fmax-type-align=N and -fno-type-align
4864 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4865 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4866 if (!SkipMaxTypeAlign) {
4867 std::string MaxTypeAlignStr = "-fmax-type-align=";
4868 MaxTypeAlignStr += A->getValue();
4869 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4871 } else if (RawTriple.isOSDarwin()) {
4872 if (!SkipMaxTypeAlign) {
4873 std::string MaxTypeAlignStr = "-fmax-type-align=16";
4874 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4878 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
4879 CmdArgs.push_back("-Qn");
4881 // -fcommon is the default unless compiling kernel code or the target says so
4882 bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4883 if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4885 CmdArgs.push_back("-fno-common");
4887 // -fsigned-bitfields is default, and clang doesn't yet support
4888 // -funsigned-bitfields.
4889 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
4890 options::OPT_funsigned_bitfields))
4891 D.Diag(diag::warn_drv_clang_unsupported)
4892 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
4894 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
4895 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
4896 D.Diag(diag::err_drv_clang_unsupported)
4897 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
4899 // -finput_charset=UTF-8 is default. Reject others
4900 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
4901 StringRef value = inputCharset->getValue();
4902 if (!value.equals_lower("utf-8"))
4903 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4907 // -fexec_charset=UTF-8 is default. Reject others
4908 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
4909 StringRef value = execCharset->getValue();
4910 if (!value.equals_lower("utf-8"))
4911 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
4915 RenderDiagnosticsOptions(D, Args, CmdArgs);
4917 // -fno-asm-blocks is default.
4918 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4920 CmdArgs.push_back("-fasm-blocks");
4922 // -fgnu-inline-asm is default.
4923 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4924 options::OPT_fno_gnu_inline_asm, true))
4925 CmdArgs.push_back("-fno-gnu-inline-asm");
4927 // Enable vectorization per default according to the optimization level
4928 // selected. For optimization levels that want vectorization we use the alias
4929 // option to simplify the hasFlag logic.
4930 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4931 OptSpecifier VectorizeAliasOption =
4932 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4933 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4934 options::OPT_fno_vectorize, EnableVec))
4935 CmdArgs.push_back("-vectorize-loops");
4937 // -fslp-vectorize is enabled based on the optimization level selected.
4938 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4939 OptSpecifier SLPVectAliasOption =
4940 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4941 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4942 options::OPT_fno_slp_vectorize, EnableSLPVec))
4943 CmdArgs.push_back("-vectorize-slp");
4945 ParseMPreferVectorWidth(D, Args, CmdArgs);
4947 if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4948 A->render(Args, CmdArgs);
4950 if (Arg *A = Args.getLastArg(
4951 options::OPT_fsanitize_undefined_strip_path_components_EQ))
4952 A->render(Args, CmdArgs);
4954 // -fdollars-in-identifiers default varies depending on platform and
4955 // language; only pass if specified.
4956 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4957 options::OPT_fno_dollars_in_identifiers)) {
4958 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4959 CmdArgs.push_back("-fdollars-in-identifiers");
4961 CmdArgs.push_back("-fno-dollars-in-identifiers");
4964 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4965 // practical purposes.
4966 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4967 options::OPT_fno_unit_at_a_time)) {
4968 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4969 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4972 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4973 options::OPT_fno_apple_pragma_pack, false))
4974 CmdArgs.push_back("-fapple-pragma-pack");
4976 if (Args.hasFlag(options::OPT_fsave_optimization_record,
4977 options::OPT_foptimization_record_file_EQ,
4978 options::OPT_fno_save_optimization_record, false)) {
4979 CmdArgs.push_back("-opt-record-file");
4981 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4983 CmdArgs.push_back(A->getValue());
4987 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
4988 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
4989 F = FinalOutput->getValue();
4993 // Use the input filename.
4994 F = llvm::sys::path::stem(Input.getBaseInput());
4996 // If we're compiling for an offload architecture (i.e. a CUDA device),
4997 // we need to make the file name for the device compilation different
4998 // from the host compilation.
4999 if (!JA.isDeviceOffloading(Action::OFK_None) &&
5000 !JA.isDeviceOffloading(Action::OFK_Host)) {
5001 llvm::sys::path::replace_extension(F, "");
5002 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
5003 Triple.normalize());
5005 F += JA.getOffloadingArch();
5009 llvm::sys::path::replace_extension(F, "opt.yaml");
5010 CmdArgs.push_back(Args.MakeArgString(F));
5014 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
5015 options::OPT_fno_rewrite_imports, false);
5017 CmdArgs.push_back("-frewrite-imports");
5019 // Enable rewrite includes if the user's asked for it or if we're generating
5021 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
5022 // nice to enable this when doing a crashdump for modules as well.
5023 if (Args.hasFlag(options::OPT_frewrite_includes,
5024 options::OPT_fno_rewrite_includes, false) ||
5025 (C.isForDiagnostics() && !HaveModules))
5026 CmdArgs.push_back("-frewrite-includes");
5028 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
5029 if (Arg *A = Args.getLastArg(options::OPT_traditional,
5030 options::OPT_traditional_cpp)) {
5031 if (isa<PreprocessJobAction>(JA))
5032 CmdArgs.push_back("-traditional-cpp");
5034 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
5037 Args.AddLastArg(CmdArgs, options::OPT_dM);
5038 Args.AddLastArg(CmdArgs, options::OPT_dD);
5040 // Handle serialized diagnostics.
5041 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
5042 CmdArgs.push_back("-serialize-diagnostic-file");
5043 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
5046 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
5047 CmdArgs.push_back("-fretain-comments-from-system-headers");
5049 // Forward -fcomment-block-commands to -cc1.
5050 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
5051 // Forward -fparse-all-comments to -cc1.
5052 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
5054 // Turn -fplugin=name.so into -load name.so
5055 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
5056 CmdArgs.push_back("-load");
5057 CmdArgs.push_back(A->getValue());
5061 // Setup statistics file output.
5062 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
5063 if (!StatsFile.empty())
5064 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
5066 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
5068 // -finclude-default-header flag is for preprocessor,
5069 // do not pass it to other cc1 commands when save-temps is enabled
5070 if (C.getDriver().isSaveTempsEnabled() &&
5071 !isa<PreprocessJobAction>(JA)) {
5072 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
5074 if (StringRef(Arg->getValue()) != "-finclude-default-header")
5075 CmdArgs.push_back(Arg->getValue());
5079 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
5081 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
5084 // We translate this by hand to the -cc1 argument, since nightly test uses
5085 // it and developers have been trained to spell it with -mllvm. Both
5086 // spellings are now deprecated and should be removed.
5087 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
5088 CmdArgs.push_back("-disable-llvm-optzns");
5090 A->render(Args, CmdArgs);
5094 // With -save-temps, we want to save the unoptimized bitcode output from the
5095 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
5097 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
5098 // has slightly different breakdown between stages.
5099 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
5100 // pristine IR generated by the frontend. Ideally, a new compile action should
5101 // be added so both IR can be captured.
5102 if (C.getDriver().isSaveTempsEnabled() &&
5103 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
5104 isa<CompileJobAction>(JA))
5105 CmdArgs.push_back("-disable-llvm-passes");
5107 if (Output.getType() == types::TY_Dependencies) {
5108 // Handled with other dependency code.
5109 } else if (Output.isFilename()) {
5110 CmdArgs.push_back("-o");
5111 CmdArgs.push_back(Output.getFilename());
5113 assert(Output.isNothing() && "Invalid output.");
5116 addDashXForInput(Args, Input, CmdArgs);
5118 ArrayRef<InputInfo> FrontendInputs = Input;
5119 if (IsHeaderModulePrecompile)
5120 FrontendInputs = ModuleHeaderInputs;
5121 else if (Input.isNothing())
5122 FrontendInputs = {};
5124 for (const InputInfo &Input : FrontendInputs) {
5125 if (Input.isFilename())
5126 CmdArgs.push_back(Input.getFilename());
5128 Input.getInputArg().renderAsInput(Args, CmdArgs);
5131 Args.AddAllArgs(CmdArgs, options::OPT_undef);
5133 const char *Exec = D.getClangProgramPath();
5135 // Optionally embed the -cc1 level arguments into the debug info or a
5136 // section, for build analysis.
5137 // Also record command line arguments into the debug info if
5138 // -grecord-gcc-switches options is set on.
5139 // By default, -gno-record-gcc-switches is set on and no recording.
5140 auto GRecordSwitches =
5141 Args.hasFlag(options::OPT_grecord_command_line,
5142 options::OPT_gno_record_command_line, false);
5143 auto FRecordSwitches =
5144 Args.hasFlag(options::OPT_frecord_command_line,
5145 options::OPT_fno_record_command_line, false);
5146 if (FRecordSwitches && !Triple.isOSBinFormatELF())
5147 D.Diag(diag::err_drv_unsupported_opt_for_target)
5148 << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
5150 if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
5151 ArgStringList OriginalArgs;
5152 for (const auto &Arg : Args)
5153 Arg->render(Args, OriginalArgs);
5155 SmallString<256> Flags;
5157 for (const char *OriginalArg : OriginalArgs) {
5158 SmallString<128> EscapedArg;
5159 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5161 Flags += EscapedArg;
5163 auto FlagsArgString = Args.MakeArgString(Flags);
5164 if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
5165 CmdArgs.push_back("-dwarf-debug-flags");
5166 CmdArgs.push_back(FlagsArgString);
5168 if (FRecordSwitches) {
5169 CmdArgs.push_back("-record-command-line");
5170 CmdArgs.push_back(FlagsArgString);
5174 // Host-side cuda compilation receives all device-side outputs in a single
5175 // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
5176 if ((IsCuda || IsHIP) && CudaDeviceInput) {
5177 CmdArgs.push_back("-fcuda-include-gpubinary");
5178 CmdArgs.push_back(CudaDeviceInput->getFilename());
5179 if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
5180 CmdArgs.push_back("-fgpu-rdc");
5184 if (Args.hasFlag(options::OPT_fcuda_short_ptr,
5185 options::OPT_fno_cuda_short_ptr, false))
5186 CmdArgs.push_back("-fcuda-short-ptr");
5189 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
5190 // to specify the result of the compile phase on the host, so the meaningful
5191 // device declarations can be identified. Also, -fopenmp-is-device is passed
5192 // along to tell the frontend that it is generating code for a device, so that
5193 // only the relevant declarations are emitted.
5194 if (IsOpenMPDevice) {
5195 CmdArgs.push_back("-fopenmp-is-device");
5196 if (OpenMPDeviceInput) {
5197 CmdArgs.push_back("-fopenmp-host-ir-file-path");
5198 CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
5202 // For all the host OpenMP offloading compile jobs we need to pass the targets
5203 // information using -fopenmp-targets= option.
5204 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
5205 SmallString<128> TargetInfo("-fopenmp-targets=");
5207 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
5208 assert(Tgts && Tgts->getNumValues() &&
5209 "OpenMP offloading has to have targets specified.");
5210 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
5213 // We need to get the string from the triple because it may be not exactly
5214 // the same as the one we get directly from the arguments.
5215 llvm::Triple T(Tgts->getValue(i));
5216 TargetInfo += T.getTriple();
5218 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
5221 bool WholeProgramVTables =
5222 Args.hasFlag(options::OPT_fwhole_program_vtables,
5223 options::OPT_fno_whole_program_vtables, false);
5224 if (WholeProgramVTables) {
5225 if (!D.isUsingLTO())
5226 D.Diag(diag::err_drv_argument_only_allowed_with)
5227 << "-fwhole-program-vtables"
5229 CmdArgs.push_back("-fwhole-program-vtables");
5232 bool RequiresSplitLTOUnit = WholeProgramVTables || Sanitize.needsLTO();
5234 Args.hasFlag(options::OPT_fsplit_lto_unit,
5235 options::OPT_fno_split_lto_unit, RequiresSplitLTOUnit);
5236 if (RequiresSplitLTOUnit && !SplitLTOUnit)
5237 D.Diag(diag::err_drv_argument_not_allowed_with)
5238 << "-fno-split-lto-unit"
5239 << (WholeProgramVTables ? "-fwhole-program-vtables" : "-fsanitize=cfi");
5241 CmdArgs.push_back("-fsplit-lto-unit");
5243 if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
5244 options::OPT_fno_experimental_isel)) {
5245 CmdArgs.push_back("-mllvm");
5246 if (A->getOption().matches(options::OPT_fexperimental_isel)) {
5247 CmdArgs.push_back("-global-isel=1");
5249 // GISel is on by default on AArch64 -O0, so don't bother adding
5250 // the fallback remarks for it. Other combinations will add a warning of
5252 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
5253 bool IsOptLevelSupported = false;
5255 Arg *A = Args.getLastArg(options::OPT_O_Group);
5256 if (Triple.getArch() == llvm::Triple::aarch64) {
5257 if (!A || A->getOption().matches(options::OPT_O0))
5258 IsOptLevelSupported = true;
5260 if (!IsArchSupported || !IsOptLevelSupported) {
5261 CmdArgs.push_back("-mllvm");
5262 CmdArgs.push_back("-global-isel-abort=2");
5264 if (!IsArchSupported)
5265 D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
5267 D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
5270 CmdArgs.push_back("-global-isel=0");
5274 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
5275 options::OPT_fno_force_enable_int128)) {
5276 if (A->getOption().matches(options::OPT_fforce_enable_int128))
5277 CmdArgs.push_back("-fforce-enable-int128");
5280 if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
5281 options::OPT_fno_complete_member_pointers, false))
5282 CmdArgs.push_back("-fcomplete-member-pointers");
5284 if (!Args.hasFlag(options::OPT_fcxx_static_destructors,
5285 options::OPT_fno_cxx_static_destructors, true))
5286 CmdArgs.push_back("-fno-c++-static-destructors");
5288 if (Arg *A = Args.getLastArg(options::OPT_moutline,
5289 options::OPT_mno_outline)) {
5290 if (A->getOption().matches(options::OPT_moutline)) {
5291 // We only support -moutline in AArch64 right now. If we're not compiling
5292 // for AArch64, emit a warning and ignore the flag. Otherwise, add the
5293 // proper mllvm flags.
5294 if (Triple.getArch() != llvm::Triple::aarch64) {
5295 D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
5297 CmdArgs.push_back("-mllvm");
5298 CmdArgs.push_back("-enable-machine-outliner");
5301 // Disable all outlining behaviour.
5302 CmdArgs.push_back("-mllvm");
5303 CmdArgs.push_back("-enable-machine-outliner=never");
5307 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
5308 (TC.getTriple().isOSBinFormatELF() ||
5309 TC.getTriple().isOSBinFormatCOFF()) &&
5310 !TC.getTriple().isPS4() &&
5311 !TC.getTriple().isOSNetBSD() &&
5312 !Distro(D.getVFS()).IsGentoo() &&
5313 !TC.getTriple().isAndroid() &&
5314 TC.useIntegratedAs()))
5315 CmdArgs.push_back("-faddrsig");
5317 // Finally add the compile command to the compilation.
5318 if (Args.hasArg(options::OPT__SLASH_fallback) &&
5319 Output.getType() == types::TY_Object &&
5320 (InputType == types::TY_C || InputType == types::TY_CXX)) {
5322 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
5323 C.addCommand(llvm::make_unique<FallbackCommand>(
5324 JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
5325 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
5326 isa<PrecompileJobAction>(JA)) {
5327 // In /fallback builds, run the main compilation even if the pch generation
5328 // fails, so that the main compilation's fallback to cl.exe runs.
5329 C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
5332 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5335 // Make the compile command echo its inputs for /showFilenames.
5336 if (Output.getType() == types::TY_Object &&
5337 Args.hasFlag(options::OPT__SLASH_showFilenames,
5338 options::OPT__SLASH_showFilenames_, false)) {
5339 C.getJobs().getJobs().back()->setPrintInputFilenames(true);
5342 if (Arg *A = Args.getLastArg(options::OPT_pg))
5343 if (!shouldUseFramePointer(Args, Triple))
5344 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
5345 << A->getAsString(Args);
5347 // Claim some arguments which clang supports automatically.
5349 // -fpch-preprocess is used with gcc to add a special marker in the output to
5350 // include the PCH file.
5351 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
5353 // Claim some arguments which clang doesn't support, but we don't
5354 // care to warn the user about.
5355 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
5356 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
5358 // Disable warnings for clang -E -emit-llvm foo.c
5359 Args.ClaimAllArgs(options::OPT_emit_llvm);
5362 Clang::Clang(const ToolChain &TC)
5363 // CAUTION! The first constructor argument ("clang") is not arbitrary,
5364 // as it is for other tools. Some operations on a Tool actually test
5365 // whether that tool is Clang based on the Tool's Name as a string.
5366 : Tool("clang", "clang frontend", TC, RF_Full) {}
5370 /// Add options related to the Objective-C runtime/ABI.
5372 /// Returns true if the runtime is non-fragile.
5373 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
5374 ArgStringList &cmdArgs,
5375 RewriteKind rewriteKind) const {
5376 // Look for the controlling runtime option.
5378 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
5379 options::OPT_fobjc_runtime_EQ);
5381 // Just forward -fobjc-runtime= to the frontend. This supercedes
5382 // options about fragility.
5384 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
5385 ObjCRuntime runtime;
5386 StringRef value = runtimeArg->getValue();
5387 if (runtime.tryParse(value)) {
5388 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
5391 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
5392 (runtime.getVersion() >= VersionTuple(2, 0)))
5393 if (!getToolChain().getTriple().isOSBinFormatELF() &&
5394 !getToolChain().getTriple().isOSBinFormatCOFF()) {
5395 getToolChain().getDriver().Diag(
5396 diag::err_drv_gnustep_objc_runtime_incompatible_binary)
5397 << runtime.getVersion().getMajor();
5400 runtimeArg->render(args, cmdArgs);
5404 // Otherwise, we'll need the ABI "version". Version numbers are
5405 // slightly confusing for historical reasons:
5406 // 1 - Traditional "fragile" ABI
5407 // 2 - Non-fragile ABI, version 1
5408 // 3 - Non-fragile ABI, version 2
5409 unsigned objcABIVersion = 1;
5410 // If -fobjc-abi-version= is present, use that to set the version.
5411 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
5412 StringRef value = abiArg->getValue();
5415 else if (value == "2")
5417 else if (value == "3")
5420 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
5422 // Otherwise, determine if we are using the non-fragile ABI.
5423 bool nonFragileABIIsDefault =
5424 (rewriteKind == RK_NonFragile ||
5425 (rewriteKind == RK_None &&
5426 getToolChain().IsObjCNonFragileABIDefault()));
5427 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
5428 options::OPT_fno_objc_nonfragile_abi,
5429 nonFragileABIIsDefault)) {
5430 // Determine the non-fragile ABI version to use.
5431 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
5432 unsigned nonFragileABIVersion = 1;
5434 unsigned nonFragileABIVersion = 2;
5438 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
5439 StringRef value = abiArg->getValue();
5441 nonFragileABIVersion = 1;
5442 else if (value == "2")
5443 nonFragileABIVersion = 2;
5445 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
5449 objcABIVersion = 1 + nonFragileABIVersion;
5455 // We don't actually care about the ABI version other than whether
5456 // it's non-fragile.
5457 bool isNonFragile = objcABIVersion != 1;
5459 // If we have no runtime argument, ask the toolchain for its default runtime.
5460 // However, the rewriter only really supports the Mac runtime, so assume that.
5461 ObjCRuntime runtime;
5463 switch (rewriteKind) {
5465 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5468 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
5471 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5476 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
5477 // On Darwin, make this use the default behavior for the toolchain.
5478 if (getToolChain().getTriple().isOSDarwin()) {
5479 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5481 // Otherwise, build for a generic macosx port.
5483 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5488 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
5489 // Legacy behaviour is to target the gnustep runtime if we are in
5490 // non-fragile mode or the GCC runtime in fragile mode.
5492 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
5494 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
5498 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
5502 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
5503 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
5511 bool Asynch = false;
5512 bool NoUnwindC = false;
5514 } // end anonymous namespace
5516 /// /EH controls whether to run destructor cleanups when exceptions are
5517 /// thrown. There are three modifiers:
5518 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
5519 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
5520 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
5521 /// - c: Assume that extern "C" functions are implicitly nounwind.
5522 /// The default is /EHs-c-, meaning cleanups are disabled.
5523 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
5526 std::vector<std::string> EHArgs =
5527 Args.getAllArgValues(options::OPT__SLASH_EH);
5528 for (auto EHVal : EHArgs) {
5529 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
5532 EH.Asynch = maybeConsumeDash(EHVal, I);
5537 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
5540 EH.Synch = maybeConsumeDash(EHVal, I);
5547 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
5551 // The /GX, /GX- flags are only processed if there are not /EH flags.
5552 // The default is that /GX is not specified.
5553 if (EHArgs.empty() &&
5554 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
5555 /*default=*/false)) {
5557 EH.NoUnwindC = true;
5563 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
5564 ArgStringList &CmdArgs,
5565 codegenoptions::DebugInfoKind *DebugInfoKind,
5566 bool *EmitCodeView) const {
5567 unsigned RTOptionID = options::OPT__SLASH_MT;
5569 if (Args.hasArg(options::OPT__SLASH_LDd))
5570 // The /LDd option implies /MTd. The dependent lib part can be overridden,
5571 // but defining _DEBUG is sticky.
5572 RTOptionID = options::OPT__SLASH_MTd;
5574 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
5575 RTOptionID = A->getOption().getID();
5577 StringRef FlagForCRT;
5578 switch (RTOptionID) {
5579 case options::OPT__SLASH_MD:
5580 if (Args.hasArg(options::OPT__SLASH_LDd))
5581 CmdArgs.push_back("-D_DEBUG");
5582 CmdArgs.push_back("-D_MT");
5583 CmdArgs.push_back("-D_DLL");
5584 FlagForCRT = "--dependent-lib=msvcrt";
5586 case options::OPT__SLASH_MDd:
5587 CmdArgs.push_back("-D_DEBUG");
5588 CmdArgs.push_back("-D_MT");
5589 CmdArgs.push_back("-D_DLL");
5590 FlagForCRT = "--dependent-lib=msvcrtd";
5592 case options::OPT__SLASH_MT:
5593 if (Args.hasArg(options::OPT__SLASH_LDd))
5594 CmdArgs.push_back("-D_DEBUG");
5595 CmdArgs.push_back("-D_MT");
5596 CmdArgs.push_back("-flto-visibility-public-std");
5597 FlagForCRT = "--dependent-lib=libcmt";
5599 case options::OPT__SLASH_MTd:
5600 CmdArgs.push_back("-D_DEBUG");
5601 CmdArgs.push_back("-D_MT");
5602 CmdArgs.push_back("-flto-visibility-public-std");
5603 FlagForCRT = "--dependent-lib=libcmtd";
5606 llvm_unreachable("Unexpected option ID.");
5609 if (Args.hasArg(options::OPT__SLASH_Zl)) {
5610 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
5612 CmdArgs.push_back(FlagForCRT.data());
5614 // This provides POSIX compatibility (maps 'open' to '_open'), which most
5615 // users want. The /Za flag to cl.exe turns this off, but it's not
5616 // implemented in clang.
5617 CmdArgs.push_back("--dependent-lib=oldnames");
5620 if (Arg *A = Args.getLastArg(options::OPT_show_includes))
5621 A->render(Args, CmdArgs);
5623 // This controls whether or not we emit RTTI data for polymorphic types.
5624 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
5626 CmdArgs.push_back("-fno-rtti-data");
5628 // This controls whether or not we emit stack-protector instrumentation.
5629 // In MSVC, Buffer Security Check (/GS) is on by default.
5630 if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
5631 /*default=*/true)) {
5632 CmdArgs.push_back("-stack-protector");
5633 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
5636 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
5637 if (Arg *DebugInfoArg =
5638 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
5639 options::OPT_gline_tables_only)) {
5640 *EmitCodeView = true;
5641 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
5642 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
5644 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
5646 *EmitCodeView = false;
5649 const Driver &D = getToolChain().getDriver();
5650 EHFlags EH = parseClangCLEHFlags(D, Args);
5651 if (EH.Synch || EH.Asynch) {
5652 if (types::isCXX(InputType))
5653 CmdArgs.push_back("-fcxx-exceptions");
5654 CmdArgs.push_back("-fexceptions");
5656 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5657 CmdArgs.push_back("-fexternc-nounwind");
5659 // /EP should expand to -E -P.
5660 if (Args.hasArg(options::OPT__SLASH_EP)) {
5661 CmdArgs.push_back("-E");
5662 CmdArgs.push_back("-P");
5665 unsigned VolatileOptionID;
5666 if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5667 getToolChain().getArch() == llvm::Triple::x86)
5668 VolatileOptionID = options::OPT__SLASH_volatile_ms;
5670 VolatileOptionID = options::OPT__SLASH_volatile_iso;
5672 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5673 VolatileOptionID = A->getOption().getID();
5675 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5676 CmdArgs.push_back("-fms-volatile");
5678 if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
5679 options::OPT__SLASH_Zc_dllexportInlines,
5681 if (Args.hasArg(options::OPT__SLASH_fallback)) {
5682 D.Diag(clang::diag::err_drv_dllexport_inlines_and_fallback);
5684 CmdArgs.push_back("-fno-dllexport-inlines");
5688 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5689 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5690 if (MostGeneralArg && BestCaseArg)
5691 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5692 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5694 if (MostGeneralArg) {
5695 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5696 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5697 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5699 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5700 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5701 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5702 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5703 << FirstConflict->getAsString(Args)
5704 << SecondConflict->getAsString(Args);
5707 CmdArgs.push_back("-fms-memptr-rep=single");
5708 else if (MultipleArg)
5709 CmdArgs.push_back("-fms-memptr-rep=multiple");
5711 CmdArgs.push_back("-fms-memptr-rep=virtual");
5714 // Parse the default calling convention options.
5716 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5717 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5718 options::OPT__SLASH_Gregcall)) {
5719 unsigned DCCOptId = CCArg->getOption().getID();
5720 const char *DCCFlag = nullptr;
5721 bool ArchSupported = true;
5722 llvm::Triple::ArchType Arch = getToolChain().getArch();
5724 case options::OPT__SLASH_Gd:
5725 DCCFlag = "-fdefault-calling-conv=cdecl";
5727 case options::OPT__SLASH_Gr:
5728 ArchSupported = Arch == llvm::Triple::x86;
5729 DCCFlag = "-fdefault-calling-conv=fastcall";
5731 case options::OPT__SLASH_Gz:
5732 ArchSupported = Arch == llvm::Triple::x86;
5733 DCCFlag = "-fdefault-calling-conv=stdcall";
5735 case options::OPT__SLASH_Gv:
5736 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5737 DCCFlag = "-fdefault-calling-conv=vectorcall";
5739 case options::OPT__SLASH_Gregcall:
5740 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5741 DCCFlag = "-fdefault-calling-conv=regcall";
5745 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5746 if (ArchSupported && DCCFlag)
5747 CmdArgs.push_back(DCCFlag);
5750 if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
5751 A->render(Args, CmdArgs);
5753 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5754 CmdArgs.push_back("-fdiagnostics-format");
5755 if (Args.hasArg(options::OPT__SLASH_fallback))
5756 CmdArgs.push_back("msvc-fallback");
5758 CmdArgs.push_back("msvc");
5761 if (Arg *A = Args.getLastArg(options::OPT__SLASH_guard)) {
5762 SmallVector<StringRef, 1> SplitArgs;
5763 StringRef(A->getValue()).split(SplitArgs, ",");
5764 bool Instrument = false;
5765 bool NoChecks = false;
5766 for (StringRef Arg : SplitArgs) {
5767 if (Arg.equals_lower("cf"))
5769 else if (Arg.equals_lower("cf-"))
5771 else if (Arg.equals_lower("nochecks"))
5773 else if (Arg.equals_lower("nochecks-"))
5776 D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << Arg;
5778 // Currently there's no support emitting CFG instrumentation; the flag only
5779 // emits the table of address-taken functions.
5780 if (Instrument || NoChecks)
5781 CmdArgs.push_back("-cfguard");
5785 visualstudio::Compiler *Clang::getCLFallback() const {
5787 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5788 return CLFallback.get();
5792 const char *Clang::getBaseInputName(const ArgList &Args,
5793 const InputInfo &Input) {
5794 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5797 const char *Clang::getBaseInputStem(const ArgList &Args,
5798 const InputInfoList &Inputs) {
5799 const char *Str = getBaseInputName(Args, Inputs[0]);
5801 if (const char *End = strrchr(Str, '.'))
5802 return Args.MakeArgString(std::string(Str, End));
5807 const char *Clang::getDependencyFileName(const ArgList &Args,
5808 const InputInfoList &Inputs) {
5809 // FIXME: Think about this more.
5812 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5813 std::string Str(OutputOpt->getValue());
5814 Res = Str.substr(0, Str.rfind('.'));
5816 Res = getBaseInputStem(Args, Inputs);
5818 return Args.MakeArgString(Res + ".d");
5823 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5824 ArgStringList &CmdArgs) const {
5827 const llvm::Triple &Triple = getToolChain().getTriple();
5828 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5830 CmdArgs.push_back("-target-abi");
5831 CmdArgs.push_back(ABIName.data());
5834 void ClangAs::AddX86TargetArgs(const ArgList &Args,
5835 ArgStringList &CmdArgs) const {
5836 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5837 StringRef Value = A->getValue();
5838 if (Value == "intel" || Value == "att") {
5839 CmdArgs.push_back("-mllvm");
5840 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5842 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
5843 << A->getOption().getName() << Value;
5848 void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
5849 const InputInfo &Output, const InputInfoList &Inputs,
5850 const ArgList &Args,
5851 const char *LinkingOutput) const {
5852 ArgStringList CmdArgs;
5854 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
5855 const InputInfo &Input = Inputs[0];
5857 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
5858 const std::string &TripleStr = Triple.getTriple();
5859 const auto &D = getToolChain().getDriver();
5861 // Don't warn about "clang -w -c foo.s"
5862 Args.ClaimAllArgs(options::OPT_w);
5863 // and "clang -emit-llvm -c foo.s"
5864 Args.ClaimAllArgs(options::OPT_emit_llvm);
5866 claimNoWarnArgs(Args);
5868 // Invoke ourselves in -cc1as mode.
5870 // FIXME: Implement custom jobs for internal actions.
5871 CmdArgs.push_back("-cc1as");
5873 // Add the "effective" target triple.
5874 CmdArgs.push_back("-triple");
5875 CmdArgs.push_back(Args.MakeArgString(TripleStr));
5877 // Set the output mode, we currently only expect to be used as a real
5879 CmdArgs.push_back("-filetype");
5880 CmdArgs.push_back("obj");
5882 // Set the main file name, so that debug info works even with
5883 // -save-temps or preprocessed assembly.
5884 CmdArgs.push_back("-main-file-name");
5885 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
5887 // Add the target cpu
5888 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
5890 CmdArgs.push_back("-target-cpu");
5891 CmdArgs.push_back(Args.MakeArgString(CPU));
5894 // Add the target features
5895 getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
5897 // Ignore explicit -force_cpusubtype_ALL option.
5898 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
5900 // Pass along any -I options so we get proper .include search paths.
5901 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
5903 // Determine the original source input.
5904 const Action *SourceAction = &JA;
5905 while (SourceAction->getKind() != Action::InputClass) {
5906 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
5907 SourceAction = SourceAction->getInputs()[0];
5910 // Forward -g and handle debug info related flags, assuming we are dealing
5911 // with an actual assembly file.
5912 bool WantDebug = false;
5913 unsigned DwarfVersion = 0;
5914 Args.ClaimAllArgs(options::OPT_g_Group);
5915 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
5916 WantDebug = !A->getOption().matches(options::OPT_g0) &&
5917 !A->getOption().matches(options::OPT_ggdb0);
5919 DwarfVersion = DwarfVersionNum(A->getSpelling());
5921 if (DwarfVersion == 0)
5922 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
5924 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
5926 if (SourceAction->getType() == types::TY_Asm ||
5927 SourceAction->getType() == types::TY_PP_Asm) {
5928 // You might think that it would be ok to set DebugInfoKind outside of
5929 // the guard for source type, however there is a test which asserts
5930 // that some assembler invocation receives no -debug-info-kind,
5931 // and it's not clear whether that test is just overly restrictive.
5932 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
5933 : codegenoptions::NoDebugInfo);
5934 // Add the -fdebug-compilation-dir flag if needed.
5935 addDebugCompDirArg(Args, CmdArgs);
5937 addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
5939 // Set the AT_producer to the clang version when using the integrated
5940 // assembler on assembly source files.
5941 CmdArgs.push_back("-dwarf-debug-producer");
5942 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
5944 // And pass along -I options
5945 Args.AddAllArgs(CmdArgs, options::OPT_I);
5947 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
5948 llvm::DebuggerKind::Default);
5949 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
5952 // Handle -fPIC et al -- the relocation-model affects the assembler
5953 // for some targets.
5954 llvm::Reloc::Model RelocationModel;
5957 std::tie(RelocationModel, PICLevel, IsPIE) =
5958 ParsePICArgs(getToolChain(), Args);
5960 const char *RMName = RelocationModelName(RelocationModel);
5962 CmdArgs.push_back("-mrelocation-model");
5963 CmdArgs.push_back(RMName);
5966 // Optionally embed the -cc1as level arguments into the debug info, for build
5968 if (getToolChain().UseDwarfDebugFlags()) {
5969 ArgStringList OriginalArgs;
5970 for (const auto &Arg : Args)
5971 Arg->render(Args, OriginalArgs);
5973 SmallString<256> Flags;
5974 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5976 for (const char *OriginalArg : OriginalArgs) {
5977 SmallString<128> EscapedArg;
5978 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5980 Flags += EscapedArg;
5982 CmdArgs.push_back("-dwarf-debug-flags");
5983 CmdArgs.push_back(Args.MakeArgString(Flags));
5986 // FIXME: Add -static support, once we have it.
5988 // Add target specific flags.
5989 switch (getToolChain().getArch()) {
5993 case llvm::Triple::mips:
5994 case llvm::Triple::mipsel:
5995 case llvm::Triple::mips64:
5996 case llvm::Triple::mips64el:
5997 AddMIPSTargetArgs(Args, CmdArgs);
6000 case llvm::Triple::x86:
6001 case llvm::Triple::x86_64:
6002 AddX86TargetArgs(Args, CmdArgs);
6005 case llvm::Triple::arm:
6006 case llvm::Triple::armeb:
6007 case llvm::Triple::thumb:
6008 case llvm::Triple::thumbeb:
6009 // This isn't in AddARMTargetArgs because we want to do this for assembly
6011 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
6012 options::OPT_mno_default_build_attributes, true)) {
6013 CmdArgs.push_back("-mllvm");
6014 CmdArgs.push_back("-arm-add-build-attributes");
6019 // Consume all the warning flags. Usually this would be handled more
6020 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
6021 // doesn't handle that so rather than warning about unused flags that are
6022 // actually used, we'll lie by omission instead.
6023 // FIXME: Stop lying and consume only the appropriate driver flags
6024 Args.ClaimAllArgs(options::OPT_W_Group);
6026 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
6027 getToolChain().getDriver());
6029 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
6031 assert(Output.isFilename() && "Unexpected lipo output.");
6032 CmdArgs.push_back("-o");
6033 CmdArgs.push_back(Output.getFilename());
6035 const llvm::Triple &T = getToolChain().getTriple();
6037 if ((getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split) &&
6038 (T.isOSLinux() || T.isOSFuchsia())) {
6039 CmdArgs.push_back("-split-dwarf-file");
6040 CmdArgs.push_back(SplitDebugName(Args, Output));
6043 assert(Input.isFilename() && "Invalid input.");
6044 CmdArgs.push_back(Input.getFilename());
6046 const char *Exec = getToolChain().getDriver().getClangProgramPath();
6047 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
6050 // Begin OffloadBundler
6052 void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
6053 const InputInfo &Output,
6054 const InputInfoList &Inputs,
6055 const llvm::opt::ArgList &TCArgs,
6056 const char *LinkingOutput) const {
6057 // The version with only one output is expected to refer to a bundling job.
6058 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
6060 // The bundling command looks like this:
6061 // clang-offload-bundler -type=bc
6062 // -targets=host-triple,openmp-triple1,openmp-triple2
6063 // -outputs=input_file
6064 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6066 ArgStringList CmdArgs;
6069 CmdArgs.push_back(TCArgs.MakeArgString(
6070 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
6072 assert(JA.getInputs().size() == Inputs.size() &&
6073 "Not have inputs for all dependence actions??");
6076 SmallString<128> Triples;
6077 Triples += "-targets=";
6078 for (unsigned I = 0; I < Inputs.size(); ++I) {
6082 // Find ToolChain for this input.
6083 Action::OffloadKind CurKind = Action::OFK_Host;
6084 const ToolChain *CurTC = &getToolChain();
6085 const Action *CurDep = JA.getInputs()[I];
6087 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
6089 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
6090 assert(CurTC == nullptr && "Expected one dependence!");
6091 CurKind = A->getOffloadingDeviceKind();
6095 Triples += Action::GetOffloadKindName(CurKind);
6097 Triples += CurTC->getTriple().normalize();
6098 if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
6100 Triples += CurDep->getOffloadingArch();
6103 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6105 // Get bundled file command.
6107 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
6109 // Get unbundled files command.
6110 SmallString<128> UB;
6112 for (unsigned I = 0; I < Inputs.size(); ++I) {
6116 // Find ToolChain for this input.
6117 const ToolChain *CurTC = &getToolChain();
6118 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
6120 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
6121 assert(CurTC == nullptr && "Expected one dependence!");
6125 UB += CurTC->getInputFilename(Inputs[I]);
6127 CmdArgs.push_back(TCArgs.MakeArgString(UB));
6129 // All the inputs are encoded as commands.
6130 C.addCommand(llvm::make_unique<Command>(
6132 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
6136 void OffloadBundler::ConstructJobMultipleOutputs(
6137 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
6138 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
6139 const char *LinkingOutput) const {
6140 // The version with multiple outputs is expected to refer to a unbundling job.
6141 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
6143 // The unbundling command looks like this:
6144 // clang-offload-bundler -type=bc
6145 // -targets=host-triple,openmp-triple1,openmp-triple2
6146 // -inputs=input_file
6147 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6150 ArgStringList CmdArgs;
6152 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
6153 InputInfo Input = Inputs.front();
6156 CmdArgs.push_back(TCArgs.MakeArgString(
6157 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
6160 SmallString<128> Triples;
6161 Triples += "-targets=";
6162 auto DepInfo = UA.getDependentActionsInfo();
6163 for (unsigned I = 0; I < DepInfo.size(); ++I) {
6167 auto &Dep = DepInfo[I];
6168 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
6170 Triples += Dep.DependentToolChain->getTriple().normalize();
6171 if (Dep.DependentOffloadKind == Action::OFK_HIP &&
6172 !Dep.DependentBoundArch.empty()) {
6174 Triples += Dep.DependentBoundArch;
6178 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6180 // Get bundled file command.
6182 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
6184 // Get unbundled files command.
6185 SmallString<128> UB;
6187 for (unsigned I = 0; I < Outputs.size(); ++I) {
6190 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
6192 CmdArgs.push_back(TCArgs.MakeArgString(UB));
6193 CmdArgs.push_back("-unbundle");
6195 // All the inputs are encoded as commands.
6196 C.addCommand(llvm::make_unique<Command>(
6198 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),