1 //===--- LLVM.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 #include "Arch/AArch64.h"
13 #include "Arch/Mips.h"
15 #include "Arch/Sparc.h"
16 #include "Arch/SystemZ.h"
19 #include "CommonArgs.h"
21 #include "InputInfo.h"
23 #include "clang/Basic/CharInfo.h"
24 #include "clang/Basic/LangOptions.h"
25 #include "clang/Basic/ObjCRuntime.h"
26 #include "clang/Basic/Version.h"
27 #include "clang/Config/config.h"
28 #include "clang/Driver/DriverDiagnostic.h"
29 #include "clang/Driver/Options.h"
30 #include "clang/Driver/SanitizerArgs.h"
31 #include "clang/Driver/XRayArgs.h"
32 #include "llvm/ADT/StringExtras.h"
33 #include "llvm/Option/ArgList.h"
34 #include "llvm/Support/CodeGen.h"
35 #include "llvm/Support/Compression.h"
36 #include "llvm/Support/FileSystem.h"
37 #include "llvm/Support/Path.h"
38 #include "llvm/Support/Process.h"
39 #include "llvm/Support/TargetParser.h"
40 #include "llvm/Support/YAMLParser.h"
43 #include <unistd.h> // For getuid().
46 using namespace clang::driver;
47 using namespace clang::driver::tools;
48 using namespace clang;
49 using namespace llvm::opt;
51 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
53 Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
54 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
55 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
56 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
57 << A->getBaseArg().getAsString(Args)
58 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
63 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
64 // In gcc, only ARM checks this, but it seems reasonable to check universally.
65 if (Args.hasArg(options::OPT_static))
67 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
68 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
72 // Add backslashes to escape spaces and other backslashes.
73 // This is used for the space-separated argument list specified with
74 // the -dwarf-debug-flags option.
75 static void EscapeSpacesAndBackslashes(const char *Arg,
76 SmallVectorImpl<char> &Res) {
90 // Quote target names for inclusion in GNU Make dependency files.
91 // Only the characters '$', '#', ' ', '\t' are quoted.
92 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
93 for (unsigned i = 0, e = Target.size(); i != e; ++i) {
97 // Escape the preceding backslashes
98 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
101 // Escape the space/tab
114 Res.push_back(Target[i]);
118 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
119 /// offloading tool chain that is associated with the current action \a JA.
121 forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
122 const ToolChain &RegularToolChain,
123 llvm::function_ref<void(const ToolChain &)> Work) {
124 // Apply Work on the current/regular tool chain.
125 Work(RegularToolChain);
127 // Apply Work on all the offloading tool chains associated with the current
129 if (JA.isHostOffloading(Action::OFK_Cuda))
130 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
131 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
132 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
134 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
135 auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
136 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
138 } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
139 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
142 // TODO: Add support for other offloading programming models here.
146 /// This is a helper function for validating the optional refinement step
147 /// parameter in reciprocal argument strings. Return false if there is an error
148 /// parsing the refinement step. Otherwise, return true and set the Position
149 /// of the refinement step in the input string.
150 static bool getRefinementStep(StringRef In, const Driver &D,
151 const Arg &A, size_t &Position) {
152 const char RefinementStepToken = ':';
153 Position = In.find(RefinementStepToken);
154 if (Position != StringRef::npos) {
155 StringRef Option = A.getOption().getName();
156 StringRef RefStep = In.substr(Position + 1);
157 // Allow exactly one numeric character for the additional refinement
158 // step parameter. This is reasonable for all currently-supported
159 // operations and architectures because we would expect that a larger value
160 // of refinement steps would cause the estimate "optimization" to
161 // under-perform the native operation. Also, if the estimate does not
162 // converge quickly, it probably will not ever converge, so further
163 // refinement steps will not produce a better answer.
164 if (RefStep.size() != 1) {
165 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
168 char RefStepChar = RefStep[0];
169 if (RefStepChar < '0' || RefStepChar > '9') {
170 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
177 /// The -mrecip flag requires processing of many optional parameters.
178 static void ParseMRecip(const Driver &D, const ArgList &Args,
179 ArgStringList &OutStrings) {
180 StringRef DisabledPrefixIn = "!";
181 StringRef DisabledPrefixOut = "!";
182 StringRef EnabledPrefixOut = "";
183 StringRef Out = "-mrecip=";
185 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
189 unsigned NumOptions = A->getNumValues();
190 if (NumOptions == 0) {
191 // No option is the same as "all".
192 OutStrings.push_back(Args.MakeArgString(Out + "all"));
196 // Pass through "all", "none", or "default" with an optional refinement step.
197 if (NumOptions == 1) {
198 StringRef Val = A->getValue(0);
200 if (!getRefinementStep(Val, D, *A, RefStepLoc))
202 StringRef ValBase = Val.slice(0, RefStepLoc);
203 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
204 OutStrings.push_back(Args.MakeArgString(Out + Val));
209 // Each reciprocal type may be enabled or disabled individually.
210 // Check each input value for validity, concatenate them all back together,
213 llvm::StringMap<bool> OptionStrings;
214 OptionStrings.insert(std::make_pair("divd", false));
215 OptionStrings.insert(std::make_pair("divf", false));
216 OptionStrings.insert(std::make_pair("vec-divd", false));
217 OptionStrings.insert(std::make_pair("vec-divf", false));
218 OptionStrings.insert(std::make_pair("sqrtd", false));
219 OptionStrings.insert(std::make_pair("sqrtf", false));
220 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
221 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
223 for (unsigned i = 0; i != NumOptions; ++i) {
224 StringRef Val = A->getValue(i);
226 bool IsDisabled = Val.startswith(DisabledPrefixIn);
227 // Ignore the disablement token for string matching.
232 if (!getRefinementStep(Val, D, *A, RefStep))
235 StringRef ValBase = Val.slice(0, RefStep);
236 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
237 if (OptionIter == OptionStrings.end()) {
238 // Try again specifying float suffix.
239 OptionIter = OptionStrings.find(ValBase.str() + 'f');
240 if (OptionIter == OptionStrings.end()) {
241 // The input name did not match any known option string.
242 D.Diag(diag::err_drv_unknown_argument) << Val;
245 // The option was specified without a float or double suffix.
246 // Make sure that the double entry was not already specified.
247 // The float entry will be checked below.
248 if (OptionStrings[ValBase.str() + 'd']) {
249 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
254 if (OptionIter->second == true) {
255 // Duplicate option specified.
256 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
260 // Mark the matched option as found. Do not allow duplicate specifiers.
261 OptionIter->second = true;
263 // If the precision was not specified, also mark the double entry as found.
264 if (ValBase.back() != 'f' && ValBase.back() != 'd')
265 OptionStrings[ValBase.str() + 'd'] = true;
267 // Build the output string.
268 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
269 Out = Args.MakeArgString(Out + Prefix + Val);
270 if (i != NumOptions - 1)
271 Out = Args.MakeArgString(Out + ",");
274 OutStrings.push_back(Args.MakeArgString(Out));
277 /// The -mprefer-vector-width option accepts either a positive integer
278 /// or the string "none".
279 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
280 ArgStringList &CmdArgs) {
281 Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
285 StringRef Value = A->getValue();
286 if (Value == "none") {
287 CmdArgs.push_back("-mprefer-vector-width=none");
290 if (Value.getAsInteger(10, Width)) {
291 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
294 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
298 static void getWebAssemblyTargetFeatures(const ArgList &Args,
299 std::vector<StringRef> &Features) {
300 handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
303 static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
304 const ArgList &Args, ArgStringList &CmdArgs,
306 const Driver &D = TC.getDriver();
307 std::vector<StringRef> Features;
308 switch (Triple.getArch()) {
311 case llvm::Triple::mips:
312 case llvm::Triple::mipsel:
313 case llvm::Triple::mips64:
314 case llvm::Triple::mips64el:
315 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
318 case llvm::Triple::arm:
319 case llvm::Triple::armeb:
320 case llvm::Triple::thumb:
321 case llvm::Triple::thumbeb:
322 arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
325 case llvm::Triple::ppc:
326 case llvm::Triple::ppc64:
327 case llvm::Triple::ppc64le:
328 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
330 case llvm::Triple::systemz:
331 systemz::getSystemZTargetFeatures(Args, Features);
333 case llvm::Triple::aarch64:
334 case llvm::Triple::aarch64_be:
335 aarch64::getAArch64TargetFeatures(D, Args, Features);
337 case llvm::Triple::x86:
338 case llvm::Triple::x86_64:
339 x86::getX86TargetFeatures(D, Triple, Args, Features);
341 case llvm::Triple::hexagon:
342 hexagon::getHexagonTargetFeatures(D, Args, Features);
344 case llvm::Triple::wasm32:
345 case llvm::Triple::wasm64:
346 getWebAssemblyTargetFeatures(Args, Features);
348 case llvm::Triple::sparc:
349 case llvm::Triple::sparcel:
350 case llvm::Triple::sparcv9:
351 sparc::getSparcTargetFeatures(D, Args, Features);
353 case llvm::Triple::r600:
354 case llvm::Triple::amdgcn:
355 amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
359 // Find the last of each feature.
360 llvm::StringMap<unsigned> LastOpt;
361 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
362 StringRef Name = Features[I];
363 assert(Name[0] == '-' || Name[0] == '+');
364 LastOpt[Name.drop_front(1)] = I;
367 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
368 // If this feature was overridden, ignore it.
369 StringRef Name = Features[I];
370 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
371 assert(LastI != LastOpt.end());
372 unsigned Last = LastI->second;
376 CmdArgs.push_back("-target-feature");
377 CmdArgs.push_back(Name.data());
382 shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
383 const llvm::Triple &Triple) {
384 // We use the zero-cost exception tables for Objective-C if the non-fragile
385 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
387 if (runtime.isNonFragile())
390 if (!Triple.isMacOSX())
393 return (!Triple.isMacOSXVersionLT(10, 5) &&
394 (Triple.getArch() == llvm::Triple::x86_64 ||
395 Triple.getArch() == llvm::Triple::arm));
398 /// Adds exception related arguments to the driver command arguments. There's a
399 /// master flag, -fexceptions and also language specific flags to enable/disable
400 /// C++ and Objective-C exceptions. This makes it possible to for example
401 /// disable C++ exceptions but enable Objective-C exceptions.
402 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
403 const ToolChain &TC, bool KernelOrKext,
404 const ObjCRuntime &objcRuntime,
405 ArgStringList &CmdArgs) {
406 const Driver &D = TC.getDriver();
407 const llvm::Triple &Triple = TC.getTriple();
410 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
411 // arguments now to avoid warnings about unused arguments.
412 Args.ClaimAllArgs(options::OPT_fexceptions);
413 Args.ClaimAllArgs(options::OPT_fno_exceptions);
414 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
415 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
416 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
417 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
421 // See if the user explicitly enabled exceptions.
422 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
425 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
426 // is not necessarily sensible, but follows GCC.
427 if (types::isObjC(InputType) &&
428 Args.hasFlag(options::OPT_fobjc_exceptions,
429 options::OPT_fno_objc_exceptions, true)) {
430 CmdArgs.push_back("-fobjc-exceptions");
432 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
435 if (types::isCXX(InputType)) {
436 // Disable C++ EH by default on XCore and PS4.
437 bool CXXExceptionsEnabled =
438 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
439 Arg *ExceptionArg = Args.getLastArg(
440 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
441 options::OPT_fexceptions, options::OPT_fno_exceptions);
443 CXXExceptionsEnabled =
444 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
445 ExceptionArg->getOption().matches(options::OPT_fexceptions);
447 if (CXXExceptionsEnabled) {
448 if (Triple.isPS4CPU()) {
449 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
450 assert(ExceptionArg &&
451 "On the PS4 exceptions should only be enabled if passing "
453 if (RTTIMode == ToolChain::RM_DisabledExplicitly) {
454 const Arg *RTTIArg = TC.getRTTIArg();
455 assert(RTTIArg && "RTTI disabled explicitly but no RTTIArg!");
456 D.Diag(diag::err_drv_argument_not_allowed_with)
457 << RTTIArg->getAsString(Args) << ExceptionArg->getAsString(Args);
458 } else if (RTTIMode == ToolChain::RM_EnabledImplicitly)
459 D.Diag(diag::warn_drv_enabling_rtti_with_exceptions);
461 assert(TC.getRTTIMode() != ToolChain::RM_DisabledImplicitly);
463 CmdArgs.push_back("-fcxx-exceptions");
470 CmdArgs.push_back("-fexceptions");
473 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
475 if (TC.getTriple().isOSDarwin()) {
476 // The native darwin assembler doesn't support the linker_option directives,
477 // so we disable them if we think the .s file will be passed to it.
478 Default = TC.useIntegratedAs();
480 return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
484 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
485 const ToolChain &TC) {
486 bool UseDwarfDirectory =
487 Args.hasFlag(options::OPT_fdwarf_directory_asm,
488 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
489 return !UseDwarfDirectory;
492 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
493 // to the corresponding DebugInfoKind.
494 static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
495 assert(A.getOption().matches(options::OPT_gN_Group) &&
496 "Not a -g option that specifies a debug-info level");
497 if (A.getOption().matches(options::OPT_g0) ||
498 A.getOption().matches(options::OPT_ggdb0))
499 return codegenoptions::NoDebugInfo;
500 if (A.getOption().matches(options::OPT_gline_tables_only) ||
501 A.getOption().matches(options::OPT_ggdb1))
502 return codegenoptions::DebugLineTablesOnly;
503 return codegenoptions::LimitedDebugInfo;
506 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
507 switch (Triple.getArch()){
510 case llvm::Triple::arm:
511 case llvm::Triple::thumb:
512 // ARM Darwin targets require a frame pointer to be always present to aid
513 // offline debugging via backtraces.
514 return Triple.isOSDarwin();
518 static bool useFramePointerForTargetByDefault(const ArgList &Args,
519 const llvm::Triple &Triple) {
520 switch (Triple.getArch()) {
521 case llvm::Triple::xcore:
522 case llvm::Triple::wasm32:
523 case llvm::Triple::wasm64:
524 // XCore never wants frame pointers, regardless of OS.
525 // WebAssembly never wants frame pointers.
531 if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) {
532 switch (Triple.getArch()) {
533 // Don't use a frame pointer on linux if optimizing for certain targets.
534 case llvm::Triple::mips64:
535 case llvm::Triple::mips64el:
536 case llvm::Triple::mips:
537 case llvm::Triple::mipsel:
538 case llvm::Triple::ppc:
539 case llvm::Triple::ppc64:
540 case llvm::Triple::ppc64le:
541 case llvm::Triple::systemz:
542 case llvm::Triple::x86:
543 case llvm::Triple::x86_64:
544 return !areOptimizationsEnabled(Args);
550 if (Triple.isOSWindows()) {
551 switch (Triple.getArch()) {
552 case llvm::Triple::x86:
553 return !areOptimizationsEnabled(Args);
554 case llvm::Triple::x86_64:
555 return Triple.isOSBinFormatMachO();
556 case llvm::Triple::arm:
557 case llvm::Triple::thumb:
558 // Windows on ARM builds with FPO disabled to aid fast stack walking
561 // All other supported Windows ISAs use xdata unwind information, so frame
562 // pointers are not generally useful.
570 static bool shouldUseFramePointer(const ArgList &Args,
571 const llvm::Triple &Triple) {
572 if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
573 options::OPT_fomit_frame_pointer))
574 return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
575 mustUseNonLeafFramePointerForTarget(Triple);
577 if (Args.hasArg(options::OPT_pg))
580 return useFramePointerForTargetByDefault(Args, Triple);
583 static bool shouldUseLeafFramePointer(const ArgList &Args,
584 const llvm::Triple &Triple) {
585 if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
586 options::OPT_momit_leaf_frame_pointer))
587 return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
589 if (Args.hasArg(options::OPT_pg))
592 if (Triple.isPS4CPU())
595 return useFramePointerForTargetByDefault(Args, Triple);
598 /// Add a CC1 option to specify the debug compilation directory.
599 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
600 SmallString<128> cwd;
601 if (!llvm::sys::fs::current_path(cwd)) {
602 CmdArgs.push_back("-fdebug-compilation-dir");
603 CmdArgs.push_back(Args.MakeArgString(cwd));
607 /// \brief Vectorize at all optimization levels greater than 1 except for -Oz.
608 /// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
609 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
610 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
611 if (A->getOption().matches(options::OPT_O4) ||
612 A->getOption().matches(options::OPT_Ofast))
615 if (A->getOption().matches(options::OPT_O0))
618 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
621 StringRef S(A->getValue());
625 // Don't vectorize -Oz, unless it's the slp vectorizer.
629 unsigned OptLevel = 0;
630 if (S.getAsInteger(10, OptLevel))
639 /// Add -x lang to \p CmdArgs for \p Input.
640 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
641 ArgStringList &CmdArgs) {
642 // When using -verify-pch, we don't want to provide the type
643 // 'precompiled-header' if it was inferred from the file extension
644 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
647 CmdArgs.push_back("-x");
648 if (Args.hasArg(options::OPT_rewrite_objc))
649 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
651 // Map the driver type to the frontend type. This is mostly an identity
652 // mapping, except that the distinction between module interface units
653 // and other source files does not exist at the frontend layer.
654 const char *ClangType;
655 switch (Input.getType()) {
656 case types::TY_CXXModule:
659 case types::TY_PP_CXXModule:
660 ClangType = "c++-cpp-output";
663 ClangType = types::getTypeName(Input.getType());
666 CmdArgs.push_back(ClangType);
670 static void appendUserToPath(SmallVectorImpl<char> &Result) {
672 const char *Username = getenv("LOGNAME");
674 const char *Username = getenv("USERNAME");
677 // Validate that LoginName can be used in a path, and get its length.
679 for (const char *P = Username; *P; ++P, ++Len) {
680 if (!clang::isAlphanumeric(*P) && *P != '_') {
686 if (Username && Len > 0) {
687 Result.append(Username, Username + Len);
692 // Fallback to user id.
694 std::string UID = llvm::utostr(getuid());
696 // FIXME: Windows seems to have an 'SID' that might work.
697 std::string UID = "9999";
699 Result.append(UID.begin(), UID.end());
702 static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
703 const InputInfo &Output, const ArgList &Args,
704 ArgStringList &CmdArgs) {
706 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
707 options::OPT_fprofile_generate_EQ,
708 options::OPT_fno_profile_generate);
709 if (PGOGenerateArg &&
710 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
711 PGOGenerateArg = nullptr;
713 auto *ProfileGenerateArg = Args.getLastArg(
714 options::OPT_fprofile_instr_generate,
715 options::OPT_fprofile_instr_generate_EQ,
716 options::OPT_fno_profile_instr_generate);
717 if (ProfileGenerateArg &&
718 ProfileGenerateArg->getOption().matches(
719 options::OPT_fno_profile_instr_generate))
720 ProfileGenerateArg = nullptr;
722 if (PGOGenerateArg && ProfileGenerateArg)
723 D.Diag(diag::err_drv_argument_not_allowed_with)
724 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
726 auto *ProfileUseArg = getLastProfileUseArg(Args);
728 if (PGOGenerateArg && ProfileUseArg)
729 D.Diag(diag::err_drv_argument_not_allowed_with)
730 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
732 if (ProfileGenerateArg && ProfileUseArg)
733 D.Diag(diag::err_drv_argument_not_allowed_with)
734 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
736 if (ProfileGenerateArg) {
737 if (ProfileGenerateArg->getOption().matches(
738 options::OPT_fprofile_instr_generate_EQ))
739 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
740 ProfileGenerateArg->getValue()));
741 // The default is to use Clang Instrumentation.
742 CmdArgs.push_back("-fprofile-instrument=clang");
745 if (PGOGenerateArg) {
746 CmdArgs.push_back("-fprofile-instrument=llvm");
747 if (PGOGenerateArg->getOption().matches(
748 options::OPT_fprofile_generate_EQ)) {
749 SmallString<128> Path(PGOGenerateArg->getValue());
750 llvm::sys::path::append(Path, "default_%m.profraw");
752 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
757 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
758 CmdArgs.push_back(Args.MakeArgString(
759 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
760 else if ((ProfileUseArg->getOption().matches(
761 options::OPT_fprofile_use_EQ) ||
762 ProfileUseArg->getOption().matches(
763 options::OPT_fprofile_instr_use))) {
764 SmallString<128> Path(
765 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
766 if (Path.empty() || llvm::sys::fs::is_directory(Path))
767 llvm::sys::path::append(Path, "default.profdata");
769 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
773 if (Args.hasArg(options::OPT_ftest_coverage) ||
774 Args.hasArg(options::OPT_coverage))
775 CmdArgs.push_back("-femit-coverage-notes");
776 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
778 Args.hasArg(options::OPT_coverage))
779 CmdArgs.push_back("-femit-coverage-data");
781 if (Args.hasFlag(options::OPT_fcoverage_mapping,
782 options::OPT_fno_coverage_mapping, false)) {
783 if (!ProfileGenerateArg)
784 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
785 << "-fcoverage-mapping"
786 << "-fprofile-instr-generate";
788 CmdArgs.push_back("-fcoverage-mapping");
791 if (C.getArgs().hasArg(options::OPT_c) ||
792 C.getArgs().hasArg(options::OPT_S)) {
793 if (Output.isFilename()) {
794 CmdArgs.push_back("-coverage-notes-file");
795 SmallString<128> OutputFilename;
796 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
797 OutputFilename = FinalOutput->getValue();
799 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
800 SmallString<128> CoverageFilename = OutputFilename;
801 if (llvm::sys::path::is_relative(CoverageFilename)) {
802 SmallString<128> Pwd;
803 if (!llvm::sys::fs::current_path(Pwd)) {
804 llvm::sys::path::append(Pwd, CoverageFilename);
805 CoverageFilename.swap(Pwd);
808 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
809 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
811 // Leave -fprofile-dir= an unused argument unless .gcda emission is
812 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
813 // the flag used. There is no -fno-profile-dir, so the user has no
814 // targeted way to suppress the warning.
815 if (Args.hasArg(options::OPT_fprofile_arcs) ||
816 Args.hasArg(options::OPT_coverage)) {
817 CmdArgs.push_back("-coverage-data-file");
818 if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
819 CoverageFilename = FProfileDir->getValue();
820 llvm::sys::path::append(CoverageFilename, OutputFilename);
822 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
823 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
829 /// \brief Check whether the given input tree contains any compilation actions.
830 static bool ContainsCompileAction(const Action *A) {
831 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
834 for (const auto &AI : A->inputs())
835 if (ContainsCompileAction(AI))
841 /// \brief Check if -relax-all should be passed to the internal assembler.
842 /// This is done by default when compiling non-assembler source with -O0.
843 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
844 bool RelaxDefault = true;
846 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
847 RelaxDefault = A->getOption().matches(options::OPT_O0);
850 RelaxDefault = false;
851 for (const auto &Act : C.getActions()) {
852 if (ContainsCompileAction(Act)) {
859 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
863 // Extract the integer N from a string spelled "-dwarf-N", returning 0
864 // on mismatch. The StringRef input (rather than an Arg) allows
865 // for use by the "-Xassembler" option parser.
866 static unsigned DwarfVersionNum(StringRef ArgValue) {
867 return llvm::StringSwitch<unsigned>(ArgValue)
868 .Case("-gdwarf-2", 2)
869 .Case("-gdwarf-3", 3)
870 .Case("-gdwarf-4", 4)
871 .Case("-gdwarf-5", 5)
875 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
876 codegenoptions::DebugInfoKind DebugInfoKind,
877 unsigned DwarfVersion,
878 llvm::DebuggerKind DebuggerTuning) {
879 switch (DebugInfoKind) {
880 case codegenoptions::DebugLineTablesOnly:
881 CmdArgs.push_back("-debug-info-kind=line-tables-only");
883 case codegenoptions::LimitedDebugInfo:
884 CmdArgs.push_back("-debug-info-kind=limited");
886 case codegenoptions::FullDebugInfo:
887 CmdArgs.push_back("-debug-info-kind=standalone");
892 if (DwarfVersion > 0)
894 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
895 switch (DebuggerTuning) {
896 case llvm::DebuggerKind::GDB:
897 CmdArgs.push_back("-debugger-tuning=gdb");
899 case llvm::DebuggerKind::LLDB:
900 CmdArgs.push_back("-debugger-tuning=lldb");
902 case llvm::DebuggerKind::SCE:
903 CmdArgs.push_back("-debugger-tuning=sce");
910 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
911 ArgStringList &CmdArgs,
913 const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
917 if (A->getOption().getID() == options::OPT_gz) {
918 if (llvm::zlib::isAvailable())
919 CmdArgs.push_back("-compress-debug-sections");
921 D.Diag(diag::warn_debug_compression_unavailable);
925 StringRef Value = A->getValue();
926 if (Value == "none") {
927 CmdArgs.push_back("-compress-debug-sections=none");
928 } else if (Value == "zlib" || Value == "zlib-gnu") {
929 if (llvm::zlib::isAvailable()) {
931 Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
933 D.Diag(diag::warn_debug_compression_unavailable);
936 D.Diag(diag::err_drv_unsupported_option_argument)
937 << A->getOption().getName() << Value;
941 static const char *RelocationModelName(llvm::Reloc::Model Model) {
943 case llvm::Reloc::Static:
945 case llvm::Reloc::PIC_:
947 case llvm::Reloc::DynamicNoPIC:
948 return "dynamic-no-pic";
949 case llvm::Reloc::ROPI:
951 case llvm::Reloc::RWPI:
953 case llvm::Reloc::ROPI_RWPI:
956 llvm_unreachable("Unknown Reloc::Model kind");
959 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
960 const Driver &D, const ArgList &Args,
961 ArgStringList &CmdArgs,
962 const InputInfo &Output,
963 const InputInfoList &Inputs) const {
965 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
967 CheckPreprocessingOptions(D, Args);
969 Args.AddLastArg(CmdArgs, options::OPT_C);
970 Args.AddLastArg(CmdArgs, options::OPT_CC);
972 // Handle dependency file generation.
973 if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
974 (A = Args.getLastArg(options::OPT_MD)) ||
975 (A = Args.getLastArg(options::OPT_MMD))) {
976 // Determine the output location.
978 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
979 DepFile = MF->getValue();
980 C.addFailureResultFile(DepFile, &JA);
981 } else if (Output.getType() == types::TY_Dependencies) {
982 DepFile = Output.getFilename();
983 } else if (A->getOption().matches(options::OPT_M) ||
984 A->getOption().matches(options::OPT_MM)) {
987 DepFile = getDependencyFileName(Args, Inputs);
988 C.addFailureResultFile(DepFile, &JA);
990 CmdArgs.push_back("-dependency-file");
991 CmdArgs.push_back(DepFile);
993 // Add a default target if one wasn't specified.
994 if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
995 const char *DepTarget;
997 // If user provided -o, that is the dependency target, except
998 // when we are only generating a dependency file.
999 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1000 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1001 DepTarget = OutputOpt->getValue();
1003 // Otherwise derive from the base input.
1005 // FIXME: This should use the computed output file location.
1006 SmallString<128> P(Inputs[0].getBaseInput());
1007 llvm::sys::path::replace_extension(P, "o");
1008 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1011 if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1012 CmdArgs.push_back("-w");
1014 CmdArgs.push_back("-MT");
1015 SmallString<128> Quoted;
1016 QuoteTarget(DepTarget, Quoted);
1017 CmdArgs.push_back(Args.MakeArgString(Quoted));
1020 if (A->getOption().matches(options::OPT_M) ||
1021 A->getOption().matches(options::OPT_MD))
1022 CmdArgs.push_back("-sys-header-deps");
1023 if ((isa<PrecompileJobAction>(JA) &&
1024 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1025 Args.hasArg(options::OPT_fmodule_file_deps))
1026 CmdArgs.push_back("-module-file-deps");
1029 if (Args.hasArg(options::OPT_MG)) {
1030 if (!A || A->getOption().matches(options::OPT_MD) ||
1031 A->getOption().matches(options::OPT_MMD))
1032 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1033 CmdArgs.push_back("-MG");
1036 Args.AddLastArg(CmdArgs, options::OPT_MP);
1037 Args.AddLastArg(CmdArgs, options::OPT_MV);
1039 // Convert all -MQ <target> args to -MT <quoted target>
1040 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1043 if (A->getOption().matches(options::OPT_MQ)) {
1044 CmdArgs.push_back("-MT");
1045 SmallString<128> Quoted;
1046 QuoteTarget(A->getValue(), Quoted);
1047 CmdArgs.push_back(Args.MakeArgString(Quoted));
1049 // -MT flag - no change
1051 A->render(Args, CmdArgs);
1055 // Add offload include arguments specific for CUDA. This must happen before
1056 // we -I or -include anything else, because we must pick up the CUDA headers
1057 // from the particular CUDA installation, rather than from e.g.
1058 // /usr/local/include.
1059 if (JA.isOffloading(Action::OFK_Cuda))
1060 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1062 // Add -i* options, and automatically translate to
1063 // -include-pch/-include-pth for transparent PCH support. It's
1064 // wonky, but we include looking for .gch so we can support seamless
1065 // replacement into a build system already set up to be generating
1067 int YcIndex = -1, YuIndex = -1;
1070 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1071 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1072 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1073 // Walk the whole i_Group and skip non "-include" flags so that the index
1074 // here matches the index in the next loop below.
1076 if (!A->getOption().matches(options::OPT_include))
1078 if (YcArg && strcmp(A->getValue(), YcArg->getValue()) == 0)
1080 if (YuArg && strcmp(A->getValue(), YuArg->getValue()) == 0)
1084 if (isa<PrecompileJobAction>(JA) && YcIndex != -1) {
1085 Driver::InputList Inputs;
1086 D.BuildInputs(getToolChain(), C.getArgs(), Inputs);
1087 assert(Inputs.size() == 1 && "Need one input when building pch");
1088 CmdArgs.push_back(Args.MakeArgString(Twine("-find-pch-source=") +
1089 Inputs[0].second->getValue()));
1092 bool RenderedImplicitInclude = false;
1094 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1097 if (getToolChain().getDriver().IsCLMode() &&
1098 A->getOption().matches(options::OPT_include)) {
1099 // In clang-cl mode, /Ycfoo.h means that all code up to a foo.h
1100 // include is compiled into foo.h, and everything after goes into
1101 // the .obj file. /Yufoo.h means that all includes prior to and including
1102 // foo.h are completely skipped and replaced with a use of the pch file
1103 // for foo.h. (Each flag can have at most one value, multiple /Yc flags
1104 // just mean that the last one wins.) If /Yc and /Yu are both present
1105 // and refer to the same file, /Yc wins.
1106 // Note that OPT__SLASH_FI gets mapped to OPT_include.
1107 // FIXME: The code here assumes that /Yc and /Yu refer to the same file.
1108 // cl.exe seems to support both flags with different values, but that
1109 // seems strange (which flag does /Fp now refer to?), so don't implement
1110 // that until someone needs it.
1111 int PchIndex = YcIndex != -1 ? YcIndex : YuIndex;
1112 if (PchIndex != -1) {
1113 if (isa<PrecompileJobAction>(JA)) {
1114 // When building the pch, skip all includes after the pch.
1115 assert(YcIndex != -1 && PchIndex == YcIndex);
1119 // When using the pch, skip all includes prior to the pch.
1120 if (AI < PchIndex) {
1124 if (AI == PchIndex) {
1126 CmdArgs.push_back("-include-pch");
1128 Args.MakeArgString(D.GetClPchPath(C, A->getValue())));
1133 } else if (A->getOption().matches(options::OPT_include)) {
1134 // Handling of gcc-style gch precompiled headers.
1135 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1136 RenderedImplicitInclude = true;
1138 // Use PCH if the user requested it.
1139 bool UsePCH = D.CCCUsePCH;
1141 bool FoundPTH = false;
1142 bool FoundPCH = false;
1143 SmallString<128> P(A->getValue());
1144 // We want the files to have a name like foo.h.pch. Add a dummy extension
1145 // so that replace_extension does the right thing.
1148 llvm::sys::path::replace_extension(P, "pch");
1149 if (llvm::sys::fs::exists(P))
1154 llvm::sys::path::replace_extension(P, "pth");
1155 if (llvm::sys::fs::exists(P))
1159 if (!FoundPCH && !FoundPTH) {
1160 llvm::sys::path::replace_extension(P, "gch");
1161 if (llvm::sys::fs::exists(P)) {
1167 if (FoundPCH || FoundPTH) {
1168 if (IsFirstImplicitInclude) {
1171 CmdArgs.push_back("-include-pch");
1173 CmdArgs.push_back("-include-pth");
1174 CmdArgs.push_back(Args.MakeArgString(P));
1177 // Ignore the PCH if not first on command line and emit warning.
1178 D.Diag(diag::warn_drv_pch_not_first_include) << P
1179 << A->getAsString(Args);
1182 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1183 // Handling of paths which must come late. These entries are handled by
1184 // the toolchain itself after the resource dir is inserted in the right
1186 // Do not claim the argument so that the use of the argument does not
1187 // silently go unnoticed on toolchains which do not honour the option.
1191 // Not translated, render as usual.
1193 A->render(Args, CmdArgs);
1196 Args.AddAllArgs(CmdArgs,
1197 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1198 options::OPT_F, options::OPT_index_header_map});
1200 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1202 // FIXME: There is a very unfortunate problem here, some troubled
1203 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1204 // really support that we would have to parse and then translate
1205 // those options. :(
1206 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1207 options::OPT_Xpreprocessor);
1209 // -I- is a deprecated GCC feature, reject it.
1210 if (Arg *A = Args.getLastArg(options::OPT_I_))
1211 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1213 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1214 // -isysroot to the CC1 invocation.
1215 StringRef sysroot = C.getSysRoot();
1216 if (sysroot != "") {
1217 if (!Args.hasArg(options::OPT_isysroot)) {
1218 CmdArgs.push_back("-isysroot");
1219 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1223 // Parse additional include paths from environment variables.
1224 // FIXME: We should probably sink the logic for handling these from the
1225 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1226 // CPATH - included following the user specified includes (but prior to
1227 // builtin and standard includes).
1228 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1229 // C_INCLUDE_PATH - system includes enabled when compiling C.
1230 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1231 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1232 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1233 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1234 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1235 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1236 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1238 // While adding the include arguments, we also attempt to retrieve the
1239 // arguments of related offloading toolchains or arguments that are specific
1240 // of an offloading programming model.
1242 // Add C++ include arguments, if needed.
1243 if (types::isCXX(Inputs[0].getType()))
1244 forAllAssociatedToolChains(C, JA, getToolChain(),
1245 [&Args, &CmdArgs](const ToolChain &TC) {
1246 TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1249 // Add system include arguments for all targets but IAMCU.
1251 forAllAssociatedToolChains(C, JA, getToolChain(),
1252 [&Args, &CmdArgs](const ToolChain &TC) {
1253 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1256 // For IAMCU add special include arguments.
1257 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1261 // FIXME: Move to target hook.
1262 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1263 switch (Triple.getArch()) {
1267 case llvm::Triple::aarch64:
1268 case llvm::Triple::aarch64_be:
1269 case llvm::Triple::arm:
1270 case llvm::Triple::armeb:
1271 case llvm::Triple::thumb:
1272 case llvm::Triple::thumbeb:
1273 if (Triple.isOSDarwin() || Triple.isOSWindows())
1277 case llvm::Triple::ppc:
1278 case llvm::Triple::ppc64:
1279 if (Triple.isOSDarwin())
1283 case llvm::Triple::hexagon:
1284 case llvm::Triple::ppc64le:
1285 case llvm::Triple::systemz:
1286 case llvm::Triple::xcore:
1291 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1292 switch (Triple.getArch()) {
1296 case llvm::Triple::xcore:
1297 case llvm::Triple::wasm32:
1298 case llvm::Triple::wasm64:
1303 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1304 ArgStringList &CmdArgs, bool KernelOrKext) const {
1305 // Select the ABI to use.
1306 // FIXME: Support -meabi.
1307 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1308 const char *ABIName = nullptr;
1309 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1310 ABIName = A->getValue();
1312 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1313 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1316 CmdArgs.push_back("-target-abi");
1317 CmdArgs.push_back(ABIName);
1319 // Determine floating point ABI from the options & target defaults.
1320 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1321 if (ABI == arm::FloatABI::Soft) {
1322 // Floating point operations and argument passing are soft.
1323 // FIXME: This changes CPP defines, we need -target-soft-float.
1324 CmdArgs.push_back("-msoft-float");
1325 CmdArgs.push_back("-mfloat-abi");
1326 CmdArgs.push_back("soft");
1327 } else if (ABI == arm::FloatABI::SoftFP) {
1328 // Floating point operations are hard, but argument passing is soft.
1329 CmdArgs.push_back("-mfloat-abi");
1330 CmdArgs.push_back("soft");
1332 // Floating point operations and argument passing are hard.
1333 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1334 CmdArgs.push_back("-mfloat-abi");
1335 CmdArgs.push_back("hard");
1338 // Forward the -mglobal-merge option for explicit control over the pass.
1339 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1340 options::OPT_mno_global_merge)) {
1341 CmdArgs.push_back("-backend-option");
1342 if (A->getOption().matches(options::OPT_mno_global_merge))
1343 CmdArgs.push_back("-arm-global-merge=false");
1345 CmdArgs.push_back("-arm-global-merge=true");
1348 if (!Args.hasFlag(options::OPT_mimplicit_float,
1349 options::OPT_mno_implicit_float, true))
1350 CmdArgs.push_back("-no-implicit-float");
1353 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1354 const ArgList &Args, bool KernelOrKext,
1355 ArgStringList &CmdArgs) const {
1356 const ToolChain &TC = getToolChain();
1358 // Add the target features
1359 getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1361 // Add target specific flags.
1362 switch (TC.getArch()) {
1366 case llvm::Triple::arm:
1367 case llvm::Triple::armeb:
1368 case llvm::Triple::thumb:
1369 case llvm::Triple::thumbeb:
1370 // Use the effective triple, which takes into account the deployment target.
1371 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1372 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1375 case llvm::Triple::aarch64:
1376 case llvm::Triple::aarch64_be:
1377 AddAArch64TargetArgs(Args, CmdArgs);
1378 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1381 case llvm::Triple::mips:
1382 case llvm::Triple::mipsel:
1383 case llvm::Triple::mips64:
1384 case llvm::Triple::mips64el:
1385 AddMIPSTargetArgs(Args, CmdArgs);
1388 case llvm::Triple::ppc:
1389 case llvm::Triple::ppc64:
1390 case llvm::Triple::ppc64le:
1391 AddPPCTargetArgs(Args, CmdArgs);
1394 case llvm::Triple::sparc:
1395 case llvm::Triple::sparcel:
1396 case llvm::Triple::sparcv9:
1397 AddSparcTargetArgs(Args, CmdArgs);
1400 case llvm::Triple::systemz:
1401 AddSystemZTargetArgs(Args, CmdArgs);
1404 case llvm::Triple::x86:
1405 case llvm::Triple::x86_64:
1406 AddX86TargetArgs(Args, CmdArgs);
1409 case llvm::Triple::lanai:
1410 AddLanaiTargetArgs(Args, CmdArgs);
1413 case llvm::Triple::hexagon:
1414 AddHexagonTargetArgs(Args, CmdArgs);
1417 case llvm::Triple::wasm32:
1418 case llvm::Triple::wasm64:
1419 AddWebAssemblyTargetArgs(Args, CmdArgs);
1424 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1425 ArgStringList &CmdArgs) const {
1426 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1428 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1429 Args.hasArg(options::OPT_mkernel) ||
1430 Args.hasArg(options::OPT_fapple_kext))
1431 CmdArgs.push_back("-disable-red-zone");
1433 if (!Args.hasFlag(options::OPT_mimplicit_float,
1434 options::OPT_mno_implicit_float, true))
1435 CmdArgs.push_back("-no-implicit-float");
1437 const char *ABIName = nullptr;
1438 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1439 ABIName = A->getValue();
1440 else if (Triple.isOSDarwin())
1441 ABIName = "darwinpcs";
1445 CmdArgs.push_back("-target-abi");
1446 CmdArgs.push_back(ABIName);
1448 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1449 options::OPT_mno_fix_cortex_a53_835769)) {
1450 CmdArgs.push_back("-backend-option");
1451 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1452 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1454 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1455 } else if (Triple.isAndroid()) {
1456 // Enabled A53 errata (835769) workaround by default on android
1457 CmdArgs.push_back("-backend-option");
1458 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1461 // Forward the -mglobal-merge option for explicit control over the pass.
1462 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1463 options::OPT_mno_global_merge)) {
1464 CmdArgs.push_back("-backend-option");
1465 if (A->getOption().matches(options::OPT_mno_global_merge))
1466 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1468 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1472 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1473 ArgStringList &CmdArgs) const {
1474 const Driver &D = getToolChain().getDriver();
1477 const llvm::Triple &Triple = getToolChain().getTriple();
1478 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1480 CmdArgs.push_back("-target-abi");
1481 CmdArgs.push_back(ABIName.data());
1483 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1484 if (ABI == mips::FloatABI::Soft) {
1485 // Floating point operations and argument passing are soft.
1486 CmdArgs.push_back("-msoft-float");
1487 CmdArgs.push_back("-mfloat-abi");
1488 CmdArgs.push_back("soft");
1490 // Floating point operations and argument passing are hard.
1491 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1492 CmdArgs.push_back("-mfloat-abi");
1493 CmdArgs.push_back("hard");
1496 if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1497 if (A->getOption().matches(options::OPT_mxgot)) {
1498 CmdArgs.push_back("-mllvm");
1499 CmdArgs.push_back("-mxgot");
1503 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1504 options::OPT_mno_ldc1_sdc1)) {
1505 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1506 CmdArgs.push_back("-mllvm");
1507 CmdArgs.push_back("-mno-ldc1-sdc1");
1511 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1512 options::OPT_mno_check_zero_division)) {
1513 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1514 CmdArgs.push_back("-mllvm");
1515 CmdArgs.push_back("-mno-check-zero-division");
1519 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1520 StringRef v = A->getValue();
1521 CmdArgs.push_back("-mllvm");
1522 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1526 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1528 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1530 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1531 // -mgpopt is the default for static, -fno-pic environments but these two
1532 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1533 // the only case where -mllvm -mgpopt is passed.
1534 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1535 // passed explicitly when compiling something with -mabicalls
1536 // (implictly) in affect. Currently the warning is in the backend.
1538 // When the ABI in use is N64, we also need to determine the PIC mode that
1539 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1541 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1543 llvm::Reloc::Model RelocationModel;
1546 std::tie(RelocationModel, PICLevel, IsPIE) =
1547 ParsePICArgs(getToolChain(), Args);
1549 NoABICalls = NoABICalls ||
1550 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1552 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1553 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1554 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1555 CmdArgs.push_back("-mllvm");
1556 CmdArgs.push_back("-mgpopt");
1558 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1559 options::OPT_mno_local_sdata);
1560 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1561 options::OPT_mno_extern_sdata);
1562 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1563 options::OPT_mno_embedded_data);
1565 CmdArgs.push_back("-mllvm");
1566 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1567 CmdArgs.push_back("-mlocal-sdata=1");
1569 CmdArgs.push_back("-mlocal-sdata=0");
1571 LocalSData->claim();
1575 CmdArgs.push_back("-mllvm");
1576 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1577 CmdArgs.push_back("-mextern-sdata=1");
1579 CmdArgs.push_back("-mextern-sdata=0");
1581 ExternSData->claim();
1585 CmdArgs.push_back("-mllvm");
1586 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1587 CmdArgs.push_back("-membedded-data=1");
1589 CmdArgs.push_back("-membedded-data=0");
1591 EmbeddedData->claim();
1594 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1595 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1600 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1601 StringRef Val = StringRef(A->getValue());
1602 if (mips::hasCompactBranches(CPUName)) {
1603 if (Val == "never" || Val == "always" || Val == "optimal") {
1604 CmdArgs.push_back("-mllvm");
1605 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1607 D.Diag(diag::err_drv_unsupported_option_argument)
1608 << A->getOption().getName() << Val;
1610 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1614 void Clang::AddPPCTargetArgs(const ArgList &Args,
1615 ArgStringList &CmdArgs) const {
1616 // Select the ABI to use.
1617 const char *ABIName = nullptr;
1618 if (getToolChain().getTriple().isOSLinux())
1619 switch (getToolChain().getArch()) {
1620 case llvm::Triple::ppc64: {
1621 // When targeting a processor that supports QPX, or if QPX is
1622 // specifically enabled, default to using the ABI that supports QPX (so
1623 // long as it is not specifically disabled).
1624 bool HasQPX = false;
1625 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1626 HasQPX = A->getValue() == StringRef("a2q");
1627 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1629 ABIName = "elfv1-qpx";
1636 case llvm::Triple::ppc64le:
1643 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1644 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1645 // the option if given as we don't have backend support for any targets
1646 // that don't use the altivec abi.
1647 if (StringRef(A->getValue()) != "altivec")
1648 ABIName = A->getValue();
1650 ppc::FloatABI FloatABI =
1651 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1653 if (FloatABI == ppc::FloatABI::Soft) {
1654 // Floating point operations and argument passing are soft.
1655 CmdArgs.push_back("-msoft-float");
1656 CmdArgs.push_back("-mfloat-abi");
1657 CmdArgs.push_back("soft");
1659 // Floating point operations and argument passing are hard.
1660 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1661 CmdArgs.push_back("-mfloat-abi");
1662 CmdArgs.push_back("hard");
1666 CmdArgs.push_back("-target-abi");
1667 CmdArgs.push_back(ABIName);
1671 void Clang::AddSparcTargetArgs(const ArgList &Args,
1672 ArgStringList &CmdArgs) const {
1673 sparc::FloatABI FloatABI =
1674 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1676 if (FloatABI == sparc::FloatABI::Soft) {
1677 // Floating point operations and argument passing are soft.
1678 CmdArgs.push_back("-msoft-float");
1679 CmdArgs.push_back("-mfloat-abi");
1680 CmdArgs.push_back("soft");
1682 // Floating point operations and argument passing are hard.
1683 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1684 CmdArgs.push_back("-mfloat-abi");
1685 CmdArgs.push_back("hard");
1689 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1690 ArgStringList &CmdArgs) const {
1691 if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1692 CmdArgs.push_back("-mbackchain");
1695 void Clang::AddX86TargetArgs(const ArgList &Args,
1696 ArgStringList &CmdArgs) const {
1697 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1698 Args.hasArg(options::OPT_mkernel) ||
1699 Args.hasArg(options::OPT_fapple_kext))
1700 CmdArgs.push_back("-disable-red-zone");
1702 // Default to avoid implicit floating-point for kernel/kext code, but allow
1703 // that to be overridden with -mno-soft-float.
1704 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1705 Args.hasArg(options::OPT_fapple_kext));
1706 if (Arg *A = Args.getLastArg(
1707 options::OPT_msoft_float, options::OPT_mno_soft_float,
1708 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1709 const Option &O = A->getOption();
1710 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1711 O.matches(options::OPT_msoft_float));
1713 if (NoImplicitFloat)
1714 CmdArgs.push_back("-no-implicit-float");
1716 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1717 StringRef Value = A->getValue();
1718 if (Value == "intel" || Value == "att") {
1719 CmdArgs.push_back("-mllvm");
1720 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1722 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1723 << A->getOption().getName() << Value;
1727 // Set flags to support MCU ABI.
1728 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1729 CmdArgs.push_back("-mfloat-abi");
1730 CmdArgs.push_back("soft");
1731 CmdArgs.push_back("-mstack-alignment=4");
1735 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1736 ArgStringList &CmdArgs) const {
1737 CmdArgs.push_back("-mqdsp6-compat");
1738 CmdArgs.push_back("-Wreturn-type");
1740 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
1741 CmdArgs.push_back("-mllvm");
1742 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1743 Twine(G.getValue())));
1746 if (!Args.hasArg(options::OPT_fno_short_enums))
1747 CmdArgs.push_back("-fshort-enums");
1748 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1749 CmdArgs.push_back("-mllvm");
1750 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1752 CmdArgs.push_back("-mllvm");
1753 CmdArgs.push_back("-machine-sink-split=0");
1756 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1757 ArgStringList &CmdArgs) const {
1758 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1759 StringRef CPUName = A->getValue();
1761 CmdArgs.push_back("-target-cpu");
1762 CmdArgs.push_back(Args.MakeArgString(CPUName));
1764 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1765 StringRef Value = A->getValue();
1766 // Only support mregparm=4 to support old usage. Report error for all other
1769 if (Value.getAsInteger(10, Mregparm)) {
1770 if (Mregparm != 4) {
1771 getToolChain().getDriver().Diag(
1772 diag::err_drv_unsupported_option_argument)
1773 << A->getOption().getName() << Value;
1779 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1780 ArgStringList &CmdArgs) const {
1781 // Default to "hidden" visibility.
1782 if (!Args.hasArg(options::OPT_fvisibility_EQ,
1783 options::OPT_fvisibility_ms_compat)) {
1784 CmdArgs.push_back("-fvisibility");
1785 CmdArgs.push_back("hidden");
1789 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1790 StringRef Target, const InputInfo &Output,
1791 const InputInfo &Input, const ArgList &Args) const {
1792 // If this is a dry run, do not create the compilation database file.
1793 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1796 using llvm::yaml::escape;
1797 const Driver &D = getToolChain().getDriver();
1799 if (!CompilationDatabase) {
1801 auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1803 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1807 CompilationDatabase = std::move(File);
1809 auto &CDB = *CompilationDatabase;
1810 SmallString<128> Buf;
1811 if (llvm::sys::fs::current_path(Buf))
1813 CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1814 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1815 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1816 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1818 Buf += types::getTypeName(Input.getType());
1819 CDB << ", \"" << escape(Buf) << "\"";
1820 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1823 CDB << ", \"" << escape(Buf) << "\"";
1825 CDB << ", \"" << escape(Input.getFilename()) << "\"";
1826 for (auto &A: Args) {
1827 auto &O = A->getOption();
1828 // Skip language selection, which is positional.
1829 if (O.getID() == options::OPT_x)
1831 // Skip writing dependency output and the compilation database itself.
1832 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1835 if (O.getKind() == Option::InputClass)
1837 // All other arguments are quoted and appended.
1839 A->render(Args, ASL);
1841 CDB << ", \"" << escape(it) << "\"";
1845 CDB << ", \"" << escape(Buf) << "\"]},\n";
1848 static void CollectArgsForIntegratedAssembler(Compilation &C,
1849 const ArgList &Args,
1850 ArgStringList &CmdArgs,
1852 if (UseRelaxAll(C, Args))
1853 CmdArgs.push_back("-mrelax-all");
1855 // Only default to -mincremental-linker-compatible if we think we are
1856 // targeting the MSVC linker.
1857 bool DefaultIncrementalLinkerCompatible =
1858 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1859 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1860 options::OPT_mno_incremental_linker_compatible,
1861 DefaultIncrementalLinkerCompatible))
1862 CmdArgs.push_back("-mincremental-linker-compatible");
1864 switch (C.getDefaultToolChain().getArch()) {
1865 case llvm::Triple::arm:
1866 case llvm::Triple::armeb:
1867 case llvm::Triple::thumb:
1868 case llvm::Triple::thumbeb:
1869 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
1870 StringRef Value = A->getValue();
1871 if (Value == "always" || Value == "never" || Value == "arm" ||
1873 CmdArgs.push_back("-mllvm");
1874 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
1876 D.Diag(diag::err_drv_unsupported_option_argument)
1877 << A->getOption().getName() << Value;
1885 // When passing -I arguments to the assembler we sometimes need to
1886 // unconditionally take the next argument. For example, when parsing
1887 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
1888 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
1889 // arg after parsing the '-I' arg.
1890 bool TakeNextArg = false;
1892 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
1893 const char *MipsTargetFeature = nullptr;
1895 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
1898 for (StringRef Value : A->getValues()) {
1900 CmdArgs.push_back(Value.data());
1901 TakeNextArg = false;
1905 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
1906 Value == "-mbig-obj")
1907 continue; // LLVM handles bigobj automatically
1909 switch (C.getDefaultToolChain().getArch()) {
1912 case llvm::Triple::thumb:
1913 case llvm::Triple::thumbeb:
1914 case llvm::Triple::arm:
1915 case llvm::Triple::armeb:
1916 if (Value == "-mthumb")
1917 // -mthumb has already been processed in ComputeLLVMTriple()
1918 // recognize but skip over here.
1921 case llvm::Triple::mips:
1922 case llvm::Triple::mipsel:
1923 case llvm::Triple::mips64:
1924 case llvm::Triple::mips64el:
1925 if (Value == "--trap") {
1926 CmdArgs.push_back("-target-feature");
1927 CmdArgs.push_back("+use-tcc-in-div");
1930 if (Value == "--break") {
1931 CmdArgs.push_back("-target-feature");
1932 CmdArgs.push_back("-use-tcc-in-div");
1935 if (Value.startswith("-msoft-float")) {
1936 CmdArgs.push_back("-target-feature");
1937 CmdArgs.push_back("+soft-float");
1940 if (Value.startswith("-mhard-float")) {
1941 CmdArgs.push_back("-target-feature");
1942 CmdArgs.push_back("-soft-float");
1946 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
1947 .Case("-mips1", "+mips1")
1948 .Case("-mips2", "+mips2")
1949 .Case("-mips3", "+mips3")
1950 .Case("-mips4", "+mips4")
1951 .Case("-mips5", "+mips5")
1952 .Case("-mips32", "+mips32")
1953 .Case("-mips32r2", "+mips32r2")
1954 .Case("-mips32r3", "+mips32r3")
1955 .Case("-mips32r5", "+mips32r5")
1956 .Case("-mips32r6", "+mips32r6")
1957 .Case("-mips64", "+mips64")
1958 .Case("-mips64r2", "+mips64r2")
1959 .Case("-mips64r3", "+mips64r3")
1960 .Case("-mips64r5", "+mips64r5")
1961 .Case("-mips64r6", "+mips64r6")
1963 if (MipsTargetFeature)
1967 if (Value == "-force_cpusubtype_ALL") {
1968 // Do nothing, this is the default and we don't support anything else.
1969 } else if (Value == "-L") {
1970 CmdArgs.push_back("-msave-temp-labels");
1971 } else if (Value == "--fatal-warnings") {
1972 CmdArgs.push_back("-massembler-fatal-warnings");
1973 } else if (Value == "--noexecstack") {
1974 CmdArgs.push_back("-mnoexecstack");
1975 } else if (Value.startswith("-compress-debug-sections") ||
1976 Value.startswith("--compress-debug-sections") ||
1977 Value == "-nocompress-debug-sections" ||
1978 Value == "--nocompress-debug-sections") {
1979 CmdArgs.push_back(Value.data());
1980 } else if (Value == "-mrelax-relocations=yes" ||
1981 Value == "--mrelax-relocations=yes") {
1982 UseRelaxRelocations = true;
1983 } else if (Value == "-mrelax-relocations=no" ||
1984 Value == "--mrelax-relocations=no") {
1985 UseRelaxRelocations = false;
1986 } else if (Value.startswith("-I")) {
1987 CmdArgs.push_back(Value.data());
1988 // We need to consume the next argument if the current arg is a plain
1989 // -I. The next arg will be the include directory.
1992 } else if (Value.startswith("-gdwarf-")) {
1993 // "-gdwarf-N" options are not cc1as options.
1994 unsigned DwarfVersion = DwarfVersionNum(Value);
1995 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
1996 CmdArgs.push_back(Value.data());
1998 RenderDebugEnablingArgs(Args, CmdArgs,
1999 codegenoptions::LimitedDebugInfo,
2000 DwarfVersion, llvm::DebuggerKind::Default);
2002 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2003 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2004 // Do nothing, we'll validate it later.
2005 } else if (Value == "-defsym") {
2006 if (A->getNumValues() != 2) {
2007 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2010 const char *S = A->getValue(1);
2011 auto Pair = StringRef(S).split('=');
2012 auto Sym = Pair.first;
2013 auto SVal = Pair.second;
2015 if (Sym.empty() || SVal.empty()) {
2016 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2020 if (SVal.getAsInteger(0, IVal)) {
2021 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2024 CmdArgs.push_back(Value.data());
2027 D.Diag(diag::err_drv_unsupported_option_argument)
2028 << A->getOption().getName() << Value;
2032 if (UseRelaxRelocations)
2033 CmdArgs.push_back("--mrelax-relocations");
2034 if (MipsTargetFeature != nullptr) {
2035 CmdArgs.push_back("-target-feature");
2036 CmdArgs.push_back(MipsTargetFeature);
2040 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2041 bool OFastEnabled, const ArgList &Args,
2042 ArgStringList &CmdArgs) {
2043 // Handle various floating point optimization flags, mapping them to the
2044 // appropriate LLVM code generation flags. This is complicated by several
2045 // "umbrella" flags, so we do this by stepping through the flags incrementally
2046 // adjusting what we think is enabled/disabled, then at the end settting the
2047 // LLVM flags based on the final state.
2048 bool HonorINFs = true;
2049 bool HonorNaNs = true;
2050 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2051 bool MathErrno = TC.IsMathErrnoDefault();
2052 bool AssociativeMath = false;
2053 bool ReciprocalMath = false;
2054 bool SignedZeros = true;
2055 bool TrappingMath = true;
2056 StringRef DenormalFPMath = "";
2057 StringRef FPContract = "";
2059 for (const Arg *A : Args) {
2060 switch (A->getOption().getID()) {
2061 // If this isn't an FP option skip the claim below
2064 // Options controlling individual features
2065 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2066 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2067 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2068 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2069 case options::OPT_fmath_errno: MathErrno = true; break;
2070 case options::OPT_fno_math_errno: MathErrno = false; break;
2071 case options::OPT_fassociative_math: AssociativeMath = true; break;
2072 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2073 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2074 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2075 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2076 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2077 case options::OPT_ftrapping_math: TrappingMath = true; break;
2078 case options::OPT_fno_trapping_math: TrappingMath = false; break;
2080 case options::OPT_fdenormal_fp_math_EQ:
2081 DenormalFPMath = A->getValue();
2084 // Validate and pass through -fp-contract option.
2085 case options::OPT_ffp_contract: {
2086 StringRef Val = A->getValue();
2087 if (Val == "fast" || Val == "on" || Val == "off")
2090 D.Diag(diag::err_drv_unsupported_option_argument)
2091 << A->getOption().getName() << Val;
2095 case options::OPT_ffinite_math_only:
2099 case options::OPT_fno_finite_math_only:
2104 case options::OPT_funsafe_math_optimizations:
2105 AssociativeMath = true;
2106 ReciprocalMath = true;
2107 SignedZeros = false;
2108 TrappingMath = false;
2110 case options::OPT_fno_unsafe_math_optimizations:
2111 AssociativeMath = false;
2112 ReciprocalMath = false;
2114 TrappingMath = true;
2115 // -fno_unsafe_math_optimizations restores default denormal handling
2116 DenormalFPMath = "";
2119 case options::OPT_Ofast:
2120 // If -Ofast is the optimization level, then -ffast-math should be enabled
2124 case options::OPT_ffast_math:
2128 AssociativeMath = true;
2129 ReciprocalMath = true;
2130 SignedZeros = false;
2131 TrappingMath = false;
2132 // If fast-math is set then set the fp-contract mode to fast.
2133 FPContract = "fast";
2135 case options::OPT_fno_fast_math:
2138 // Turning on -ffast-math (with either flag) removes the need for
2139 // MathErrno. However, turning *off* -ffast-math merely restores the
2140 // toolchain default (which may be false).
2141 MathErrno = TC.IsMathErrnoDefault();
2142 AssociativeMath = false;
2143 ReciprocalMath = false;
2145 TrappingMath = true;
2146 // -fno_fast_math restores default denormal and fpcontract handling
2147 DenormalFPMath = "";
2152 // If we handled this option claim it
2157 CmdArgs.push_back("-menable-no-infs");
2160 CmdArgs.push_back("-menable-no-nans");
2163 CmdArgs.push_back("-fmath-errno");
2165 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2167 CmdArgs.push_back("-menable-unsafe-fp-math");
2170 CmdArgs.push_back("-fno-signed-zeros");
2172 if (AssociativeMath && !SignedZeros && !TrappingMath)
2173 CmdArgs.push_back("-mreassociate");
2176 CmdArgs.push_back("-freciprocal-math");
2179 CmdArgs.push_back("-fno-trapping-math");
2181 if (!DenormalFPMath.empty())
2183 Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2185 if (!FPContract.empty())
2186 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2188 ParseMRecip(D, Args, CmdArgs);
2190 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2191 // individual features enabled by -ffast-math instead of the option itself as
2192 // that's consistent with gcc's behaviour.
2193 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2194 ReciprocalMath && !SignedZeros && !TrappingMath)
2195 CmdArgs.push_back("-ffast-math");
2197 // Handle __FINITE_MATH_ONLY__ similarly.
2198 if (!HonorINFs && !HonorNaNs)
2199 CmdArgs.push_back("-ffinite-math-only");
2201 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2202 CmdArgs.push_back("-mfpmath");
2203 CmdArgs.push_back(A->getValue());
2207 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2208 const llvm::Triple &Triple,
2209 const InputInfo &Input) {
2210 // Enable region store model by default.
2211 CmdArgs.push_back("-analyzer-store=region");
2213 // Treat blocks as analysis entry points.
2214 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2216 CmdArgs.push_back("-analyzer-eagerly-assume");
2218 // Add default argument set.
2219 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2220 CmdArgs.push_back("-analyzer-checker=core");
2221 CmdArgs.push_back("-analyzer-checker=apiModeling");
2223 if (!Triple.isWindowsMSVCEnvironment()) {
2224 CmdArgs.push_back("-analyzer-checker=unix");
2226 // Enable "unix" checkers that also work on Windows.
2227 CmdArgs.push_back("-analyzer-checker=unix.API");
2228 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2229 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2230 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2231 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2232 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2235 // Disable some unix checkers for PS4.
2236 if (Triple.isPS4CPU()) {
2237 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2238 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2241 if (Triple.isOSDarwin())
2242 CmdArgs.push_back("-analyzer-checker=osx");
2244 CmdArgs.push_back("-analyzer-checker=deadcode");
2246 if (types::isCXX(Input.getType()))
2247 CmdArgs.push_back("-analyzer-checker=cplusplus");
2249 if (!Triple.isPS4CPU()) {
2250 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2251 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2252 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2253 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2254 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2255 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2258 // Default nullability checks.
2259 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2260 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2263 // Set the output format. The default is plist, for (lame) historical reasons.
2264 CmdArgs.push_back("-analyzer-output");
2265 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2266 CmdArgs.push_back(A->getValue());
2268 CmdArgs.push_back("plist");
2270 // Disable the presentation of standard compiler warnings when using
2271 // --analyze. We only want to show static analyzer diagnostics or frontend
2273 CmdArgs.push_back("-w");
2275 // Add -Xanalyzer arguments when running as analyzer.
2276 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2279 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2280 ArgStringList &CmdArgs, bool KernelOrKext) {
2281 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2283 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2284 // doesn't even have a stack!
2285 if (EffectiveTriple.isNVPTX())
2288 // -stack-protector=0 is default.
2289 unsigned StackProtectorLevel = 0;
2290 unsigned DefaultStackProtectorLevel =
2291 TC.GetDefaultStackProtectorLevel(KernelOrKext);
2293 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2294 options::OPT_fstack_protector_all,
2295 options::OPT_fstack_protector_strong,
2296 options::OPT_fstack_protector)) {
2297 if (A->getOption().matches(options::OPT_fstack_protector))
2298 StackProtectorLevel =
2299 std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2300 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2301 StackProtectorLevel = LangOptions::SSPStrong;
2302 else if (A->getOption().matches(options::OPT_fstack_protector_all))
2303 StackProtectorLevel = LangOptions::SSPReq;
2305 StackProtectorLevel = DefaultStackProtectorLevel;
2308 if (StackProtectorLevel) {
2309 CmdArgs.push_back("-stack-protector");
2310 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2313 // --param ssp-buffer-size=
2314 for (const Arg *A : Args.filtered(options::OPT__param)) {
2315 StringRef Str(A->getValue());
2316 if (Str.startswith("ssp-buffer-size=")) {
2317 if (StackProtectorLevel) {
2318 CmdArgs.push_back("-stack-protector-buffer-size");
2319 // FIXME: Verify the argument is a valid integer.
2320 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2327 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2328 const unsigned ForwardedArguments[] = {
2329 options::OPT_cl_opt_disable,
2330 options::OPT_cl_strict_aliasing,
2331 options::OPT_cl_single_precision_constant,
2332 options::OPT_cl_finite_math_only,
2333 options::OPT_cl_kernel_arg_info,
2334 options::OPT_cl_unsafe_math_optimizations,
2335 options::OPT_cl_fast_relaxed_math,
2336 options::OPT_cl_mad_enable,
2337 options::OPT_cl_no_signed_zeros,
2338 options::OPT_cl_denorms_are_zero,
2339 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2342 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2343 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2344 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2347 for (const auto &Arg : ForwardedArguments)
2348 if (const auto *A = Args.getLastArg(Arg))
2349 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2352 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2353 ArgStringList &CmdArgs) {
2354 bool ARCMTEnabled = false;
2355 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2356 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2357 options::OPT_ccc_arcmt_modify,
2358 options::OPT_ccc_arcmt_migrate)) {
2359 ARCMTEnabled = true;
2360 switch (A->getOption().getID()) {
2361 default: llvm_unreachable("missed a case");
2362 case options::OPT_ccc_arcmt_check:
2363 CmdArgs.push_back("-arcmt-check");
2365 case options::OPT_ccc_arcmt_modify:
2366 CmdArgs.push_back("-arcmt-modify");
2368 case options::OPT_ccc_arcmt_migrate:
2369 CmdArgs.push_back("-arcmt-migrate");
2370 CmdArgs.push_back("-mt-migrate-directory");
2371 CmdArgs.push_back(A->getValue());
2373 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2374 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2379 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2380 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2381 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2384 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2386 D.Diag(diag::err_drv_argument_not_allowed_with)
2387 << A->getAsString(Args) << "-ccc-arcmt-migrate";
2389 CmdArgs.push_back("-mt-migrate-directory");
2390 CmdArgs.push_back(A->getValue());
2392 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2393 options::OPT_objcmt_migrate_subscripting,
2394 options::OPT_objcmt_migrate_property)) {
2395 // None specified, means enable them all.
2396 CmdArgs.push_back("-objcmt-migrate-literals");
2397 CmdArgs.push_back("-objcmt-migrate-subscripting");
2398 CmdArgs.push_back("-objcmt-migrate-property");
2400 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2401 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2402 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2405 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2406 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2407 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2408 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2409 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2410 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2411 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2412 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2413 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2414 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2415 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2416 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2417 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2418 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2419 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2420 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2424 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2425 const ArgList &Args, ArgStringList &CmdArgs) {
2426 // -fbuiltin is default unless -mkernel is used.
2428 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2429 !Args.hasArg(options::OPT_mkernel));
2431 CmdArgs.push_back("-fno-builtin");
2433 // -ffreestanding implies -fno-builtin.
2434 if (Args.hasArg(options::OPT_ffreestanding))
2435 UseBuiltins = false;
2437 // Process the -fno-builtin-* options.
2438 for (const auto &Arg : Args) {
2439 const Option &O = Arg->getOption();
2440 if (!O.matches(options::OPT_fno_builtin_))
2445 // If -fno-builtin is specified, then there's no need to pass the option to
2450 StringRef FuncName = Arg->getValue();
2451 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2454 // le32-specific flags:
2455 // -fno-math-builtin: clang should not convert math builtins to intrinsics
2457 if (TC.getArch() == llvm::Triple::le32)
2458 CmdArgs.push_back("-fno-math-builtin");
2461 static void RenderModulesOptions(Compilation &C, const Driver &D,
2462 const ArgList &Args, const InputInfo &Input,
2463 const InputInfo &Output,
2464 ArgStringList &CmdArgs, bool &HaveModules) {
2465 // -fmodules enables the use of precompiled modules (off by default).
2466 // Users can pass -fno-cxx-modules to turn off modules support for
2467 // C++/Objective-C++ programs.
2468 bool HaveClangModules = false;
2469 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2470 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2471 options::OPT_fno_cxx_modules, true);
2472 if (AllowedInCXX || !types::isCXX(Input.getType())) {
2473 CmdArgs.push_back("-fmodules");
2474 HaveClangModules = true;
2478 HaveModules = HaveClangModules;
2479 if (Args.hasArg(options::OPT_fmodules_ts)) {
2480 CmdArgs.push_back("-fmodules-ts");
2484 // -fmodule-maps enables implicit reading of module map files. By default,
2485 // this is enabled if we are using Clang's flavor of precompiled modules.
2486 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2487 options::OPT_fno_implicit_module_maps, HaveClangModules))
2488 CmdArgs.push_back("-fimplicit-module-maps");
2490 // -fmodules-decluse checks that modules used are declared so (off by default)
2491 if (Args.hasFlag(options::OPT_fmodules_decluse,
2492 options::OPT_fno_modules_decluse, false))
2493 CmdArgs.push_back("-fmodules-decluse");
2495 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2496 // all #included headers are part of modules.
2497 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2498 options::OPT_fno_modules_strict_decluse, false))
2499 CmdArgs.push_back("-fmodules-strict-decluse");
2501 // -fno-implicit-modules turns off implicitly compiling modules on demand.
2502 if (!Args.hasFlag(options::OPT_fimplicit_modules,
2503 options::OPT_fno_implicit_modules, HaveClangModules)) {
2505 CmdArgs.push_back("-fno-implicit-modules");
2506 } else if (HaveModules) {
2507 // -fmodule-cache-path specifies where our implicitly-built module files
2508 // should be written.
2509 SmallString<128> Path;
2510 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2511 Path = A->getValue();
2513 if (C.isForDiagnostics()) {
2514 // When generating crash reports, we want to emit the modules along with
2515 // the reproduction sources, so we ignore any provided module path.
2516 Path = Output.getFilename();
2517 llvm::sys::path::replace_extension(Path, ".cache");
2518 llvm::sys::path::append(Path, "modules");
2519 } else if (Path.empty()) {
2520 // No module path was provided: use the default.
2521 llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Path);
2522 llvm::sys::path::append(Path, "org.llvm.clang.");
2523 appendUserToPath(Path);
2524 llvm::sys::path::append(Path, "ModuleCache");
2527 const char Arg[] = "-fmodules-cache-path=";
2528 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2529 CmdArgs.push_back(Args.MakeArgString(Path));
2533 // -fprebuilt-module-path specifies where to load the prebuilt module files.
2534 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2535 CmdArgs.push_back(Args.MakeArgString(
2536 std::string("-fprebuilt-module-path=") + A->getValue()));
2541 // -fmodule-name specifies the module that is currently being built (or
2542 // used for header checking by -fmodule-maps).
2543 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2545 // -fmodule-map-file can be used to specify files containing module
2547 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2549 // -fbuiltin-module-map can be used to load the clang
2550 // builtin headers modulemap file.
2551 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2552 SmallString<128> BuiltinModuleMap(D.ResourceDir);
2553 llvm::sys::path::append(BuiltinModuleMap, "include");
2554 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2555 if (llvm::sys::fs::exists(BuiltinModuleMap))
2557 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2560 // The -fmodule-file=<name>=<file> form specifies the mapping of module
2561 // names to precompiled module files (the module is loaded only if used).
2562 // The -fmodule-file=<file> form can be used to unconditionally load
2563 // precompiled module files (whether used or not).
2565 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2567 Args.ClaimAllArgs(options::OPT_fmodule_file);
2569 // When building modules and generating crashdumps, we need to dump a module
2570 // dependency VFS alongside the output.
2571 if (HaveClangModules && C.isForDiagnostics()) {
2572 SmallString<128> VFSDir(Output.getFilename());
2573 llvm::sys::path::replace_extension(VFSDir, ".cache");
2574 // Add the cache directory as a temp so the crash diagnostics pick it up.
2575 C.addTempFile(Args.MakeArgString(VFSDir));
2577 llvm::sys::path::append(VFSDir, "vfs");
2578 CmdArgs.push_back("-module-dependency-dir");
2579 CmdArgs.push_back(Args.MakeArgString(VFSDir));
2582 if (HaveClangModules)
2583 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2585 // Pass through all -fmodules-ignore-macro arguments.
2586 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2587 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2588 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2590 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2592 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2593 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2594 D.Diag(diag::err_drv_argument_not_allowed_with)
2595 << A->getAsString(Args) << "-fbuild-session-timestamp";
2597 llvm::sys::fs::file_status Status;
2598 if (llvm::sys::fs::status(A->getValue(), Status))
2599 D.Diag(diag::err_drv_no_such_file) << A->getValue();
2601 Args.MakeArgString("-fbuild-session-timestamp=" +
2602 Twine((uint64_t)Status.getLastModificationTime()
2607 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2608 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2609 options::OPT_fbuild_session_file))
2610 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2612 Args.AddLastArg(CmdArgs,
2613 options::OPT_fmodules_validate_once_per_build_session);
2616 Args.AddLastArg(CmdArgs, options::OPT_fmodules_validate_system_headers);
2617 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2620 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2621 ArgStringList &CmdArgs) {
2622 // -fsigned-char is default.
2623 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2624 options::OPT_fno_signed_char,
2625 options::OPT_funsigned_char,
2626 options::OPT_fno_unsigned_char)) {
2627 if (A->getOption().matches(options::OPT_funsigned_char) ||
2628 A->getOption().matches(options::OPT_fno_signed_char)) {
2629 CmdArgs.push_back("-fno-signed-char");
2631 } else if (!isSignedCharDefault(T)) {
2632 CmdArgs.push_back("-fno-signed-char");
2635 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2636 options::OPT_fno_short_wchar)) {
2637 if (A->getOption().matches(options::OPT_fshort_wchar)) {
2638 CmdArgs.push_back("-fwchar-type=short");
2639 CmdArgs.push_back("-fno-signed-wchar");
2641 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2642 CmdArgs.push_back("-fwchar-type=int");
2643 if (IsARM && !(T.isOSWindows() || T.getOS() == llvm::Triple::NetBSD ||
2644 T.getOS() == llvm::Triple::OpenBSD))
2645 CmdArgs.push_back("-fno-signed-wchar");
2647 CmdArgs.push_back("-fsigned-wchar");
2652 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2653 const llvm::Triple &T, const ArgList &Args,
2654 ObjCRuntime &Runtime, bool InferCovariantReturns,
2655 const InputInfo &Input, ArgStringList &CmdArgs) {
2656 const llvm::Triple::ArchType Arch = TC.getArch();
2658 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2659 // is the default. Except for deployment target of 10.5, next runtime is
2660 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2661 if (Runtime.isNonFragile()) {
2662 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2663 options::OPT_fno_objc_legacy_dispatch,
2664 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2665 if (TC.UseObjCMixedDispatch())
2666 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2668 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2672 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2673 // to do Array/Dictionary subscripting by default.
2674 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2675 !T.isMacOSXVersionLT(10, 7) &&
2676 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2677 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2679 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2680 // NOTE: This logic is duplicated in ToolChains.cpp.
2681 if (isObjCAutoRefCount(Args)) {
2684 CmdArgs.push_back("-fobjc-arc");
2686 // FIXME: It seems like this entire block, and several around it should be
2687 // wrapped in isObjC, but for now we just use it here as this is where it
2688 // was being used previously.
2689 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2690 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2691 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2693 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2696 // Allow the user to enable full exceptions code emission.
2697 // We default off for Objective-C, on for Objective-C++.
2698 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2699 options::OPT_fno_objc_arc_exceptions,
2700 /*default=*/types::isCXX(Input.getType())))
2701 CmdArgs.push_back("-fobjc-arc-exceptions");
2704 // Silence warning for full exception code emission options when explicitly
2705 // set to use no ARC.
2706 if (Args.hasArg(options::OPT_fno_objc_arc)) {
2707 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2708 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2711 // -fobjc-infer-related-result-type is the default, except in the Objective-C
2713 if (InferCovariantReturns)
2714 CmdArgs.push_back("-fno-objc-infer-related-result-type");
2716 // Pass down -fobjc-weak or -fno-objc-weak if present.
2717 if (types::isObjC(Input.getType())) {
2719 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
2722 } else if (!Runtime.allowsWeak()) {
2723 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
2724 D.Diag(diag::err_objc_weak_unsupported);
2726 WeakArg->render(Args, CmdArgs);
2731 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
2732 ArgStringList &CmdArgs) {
2733 bool CaretDefault = true;
2734 bool ColumnDefault = true;
2736 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
2737 options::OPT__SLASH_diagnostics_column,
2738 options::OPT__SLASH_diagnostics_caret)) {
2739 switch (A->getOption().getID()) {
2740 case options::OPT__SLASH_diagnostics_caret:
2741 CaretDefault = true;
2742 ColumnDefault = true;
2744 case options::OPT__SLASH_diagnostics_column:
2745 CaretDefault = false;
2746 ColumnDefault = true;
2748 case options::OPT__SLASH_diagnostics_classic:
2749 CaretDefault = false;
2750 ColumnDefault = false;
2755 // -fcaret-diagnostics is default.
2756 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
2757 options::OPT_fno_caret_diagnostics, CaretDefault))
2758 CmdArgs.push_back("-fno-caret-diagnostics");
2760 // -fdiagnostics-fixit-info is default, only pass non-default.
2761 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
2762 options::OPT_fno_diagnostics_fixit_info))
2763 CmdArgs.push_back("-fno-diagnostics-fixit-info");
2765 // Enable -fdiagnostics-show-option by default.
2766 if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
2767 options::OPT_fno_diagnostics_show_option))
2768 CmdArgs.push_back("-fdiagnostics-show-option");
2771 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
2772 CmdArgs.push_back("-fdiagnostics-show-category");
2773 CmdArgs.push_back(A->getValue());
2776 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
2777 options::OPT_fno_diagnostics_show_hotness, false))
2778 CmdArgs.push_back("-fdiagnostics-show-hotness");
2781 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
2783 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
2784 CmdArgs.push_back(Args.MakeArgString(Opt));
2787 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
2788 CmdArgs.push_back("-fdiagnostics-format");
2789 CmdArgs.push_back(A->getValue());
2792 if (const Arg *A = Args.getLastArg(
2793 options::OPT_fdiagnostics_show_note_include_stack,
2794 options::OPT_fno_diagnostics_show_note_include_stack)) {
2795 const Option &O = A->getOption();
2796 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
2797 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
2799 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
2802 // Color diagnostics are parsed by the driver directly from argv and later
2803 // re-parsed to construct this job; claim any possible color diagnostic here
2804 // to avoid warn_drv_unused_argument and diagnose bad
2805 // OPT_fdiagnostics_color_EQ values.
2806 for (const Arg *A : Args) {
2807 const Option &O = A->getOption();
2808 if (!O.matches(options::OPT_fcolor_diagnostics) &&
2809 !O.matches(options::OPT_fdiagnostics_color) &&
2810 !O.matches(options::OPT_fno_color_diagnostics) &&
2811 !O.matches(options::OPT_fno_diagnostics_color) &&
2812 !O.matches(options::OPT_fdiagnostics_color_EQ))
2815 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
2816 StringRef Value(A->getValue());
2817 if (Value != "always" && Value != "never" && Value != "auto")
2818 D.Diag(diag::err_drv_clang_unsupported)
2819 << ("-fdiagnostics-color=" + Value).str();
2824 if (D.getDiags().getDiagnosticOptions().ShowColors)
2825 CmdArgs.push_back("-fcolor-diagnostics");
2827 if (Args.hasArg(options::OPT_fansi_escape_codes))
2828 CmdArgs.push_back("-fansi-escape-codes");
2830 if (!Args.hasFlag(options::OPT_fshow_source_location,
2831 options::OPT_fno_show_source_location))
2832 CmdArgs.push_back("-fno-show-source-location");
2834 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
2835 CmdArgs.push_back("-fdiagnostics-absolute-paths");
2837 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
2839 CmdArgs.push_back("-fno-show-column");
2841 if (!Args.hasFlag(options::OPT_fspell_checking,
2842 options::OPT_fno_spell_checking))
2843 CmdArgs.push_back("-fno-spell-checking");
2846 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
2847 const llvm::Triple &T, const ArgList &Args,
2848 bool EmitCodeView, bool IsWindowsMSVC,
2849 ArgStringList &CmdArgs,
2850 codegenoptions::DebugInfoKind &DebugInfoKind,
2851 const Arg *&SplitDWARFArg) {
2852 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
2853 options::OPT_fno_debug_info_for_profiling, false))
2854 CmdArgs.push_back("-fdebug-info-for-profiling");
2856 // The 'g' groups options involve a somewhat intricate sequence of decisions
2857 // about what to pass from the driver to the frontend, but by the time they
2858 // reach cc1 they've been factored into three well-defined orthogonal choices:
2859 // * what level of debug info to generate
2860 // * what dwarf version to write
2861 // * what debugger tuning to use
2862 // This avoids having to monkey around further in cc1 other than to disable
2863 // codeview if not running in a Windows environment. Perhaps even that
2864 // decision should be made in the driver as well though.
2865 unsigned DWARFVersion = 0;
2866 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
2868 bool SplitDWARFInlining =
2869 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
2870 options::OPT_fno_split_dwarf_inlining, true);
2872 Args.ClaimAllArgs(options::OPT_g_Group);
2874 SplitDWARFArg = Args.getLastArg(options::OPT_gsplit_dwarf);
2876 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
2877 // If the last option explicitly specified a debug-info level, use it.
2878 if (A->getOption().matches(options::OPT_gN_Group)) {
2879 DebugInfoKind = DebugLevelToInfoKind(*A);
2880 // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
2881 // But -gsplit-dwarf is not a g_group option, hence we have to check the
2882 // order explicitly. If -gsplit-dwarf wins, we fix DebugInfoKind later.
2883 // This gets a bit more complicated if you've disabled inline info in the
2884 // skeleton CUs (SplitDWARFInlining) - then there's value in composing
2885 // split-dwarf and line-tables-only, so let those compose naturally in
2887 // And if you just turned off debug info, (-gsplit-dwarf -g0) - do that.
2888 if (SplitDWARFArg) {
2889 if (A->getIndex() > SplitDWARFArg->getIndex()) {
2890 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
2891 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
2892 SplitDWARFInlining))
2893 SplitDWARFArg = nullptr;
2894 } else if (SplitDWARFInlining)
2895 DebugInfoKind = codegenoptions::NoDebugInfo;
2898 // For any other 'g' option, use Limited.
2899 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2903 // If a debugger tuning argument appeared, remember it.
2905 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
2906 if (A->getOption().matches(options::OPT_glldb))
2907 DebuggerTuning = llvm::DebuggerKind::LLDB;
2908 else if (A->getOption().matches(options::OPT_gsce))
2909 DebuggerTuning = llvm::DebuggerKind::SCE;
2911 DebuggerTuning = llvm::DebuggerKind::GDB;
2914 // If a -gdwarf argument appeared, remember it.
2916 Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
2917 options::OPT_gdwarf_4, options::OPT_gdwarf_5))
2918 DWARFVersion = DwarfVersionNum(A->getSpelling());
2920 // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
2921 // argument parsing.
2922 if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) {
2923 // DWARFVersion remains at 0 if no explicit choice was made.
2924 CmdArgs.push_back("-gcodeview");
2925 } else if (DWARFVersion == 0 &&
2926 DebugInfoKind != codegenoptions::NoDebugInfo) {
2927 DWARFVersion = TC.GetDefaultDwarfVersion();
2930 // We ignore flag -gstrict-dwarf for now.
2931 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
2932 Args.ClaimAllArgs(options::OPT_g_flags_Group);
2934 // Column info is included by default for everything except SCE and CodeView.
2935 // Clang doesn't track end columns, just starting columns, which, in theory,
2936 // is fine for CodeView (and PDB). In practice, however, the Microsoft
2937 // debuggers don't handle missing end columns well, so it's better not to
2938 // include any column info.
2939 if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
2940 /*Default=*/!(IsWindowsMSVC && EmitCodeView) &&
2941 DebuggerTuning != llvm::DebuggerKind::SCE))
2942 CmdArgs.push_back("-dwarf-column-info");
2944 // FIXME: Move backend command line options to the module.
2945 // If -gline-tables-only is the last option it wins.
2946 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
2947 Args.hasArg(options::OPT_gmodules)) {
2948 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2949 CmdArgs.push_back("-dwarf-ext-refs");
2950 CmdArgs.push_back("-fmodule-format=obj");
2953 // -gsplit-dwarf should turn on -g and enable the backend dwarf
2954 // splitting and extraction.
2955 // FIXME: Currently only works on Linux.
2956 if (T.isOSLinux()) {
2957 if (!SplitDWARFInlining)
2958 CmdArgs.push_back("-fno-split-dwarf-inlining");
2960 if (SplitDWARFArg) {
2961 if (DebugInfoKind == codegenoptions::NoDebugInfo)
2962 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2963 CmdArgs.push_back("-enable-split-dwarf");
2967 // After we've dealt with all combinations of things that could
2968 // make DebugInfoKind be other than None or DebugLineTablesOnly,
2969 // figure out if we need to "upgrade" it to standalone debug info.
2970 // We parse these two '-f' options whether or not they will be used,
2971 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
2972 bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
2973 options::OPT_fno_standalone_debug,
2974 TC.GetDefaultStandaloneDebug());
2975 if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
2976 DebugInfoKind = codegenoptions::FullDebugInfo;
2978 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
2981 // -fdebug-macro turns on macro debug info generation.
2982 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
2984 CmdArgs.push_back("-debug-info-macro");
2986 // -ggnu-pubnames turns on gnu style pubnames in the backend.
2987 if (Args.hasArg(options::OPT_ggnu_pubnames))
2988 CmdArgs.push_back("-ggnu-pubnames");
2990 // -gdwarf-aranges turns on the emission of the aranges section in the
2992 // Always enabled for SCE tuning.
2993 if (Args.hasArg(options::OPT_gdwarf_aranges) ||
2994 DebuggerTuning == llvm::DebuggerKind::SCE) {
2995 CmdArgs.push_back("-backend-option");
2996 CmdArgs.push_back("-generate-arange-section");
2999 if (Args.hasFlag(options::OPT_fdebug_types_section,
3000 options::OPT_fno_debug_types_section, false)) {
3001 CmdArgs.push_back("-backend-option");
3002 CmdArgs.push_back("-generate-type-units");
3005 // Decide how to render forward declarations of template instantiations.
3006 // SCE wants full descriptions, others just get them in the name.
3007 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3008 CmdArgs.push_back("-debug-forward-template-params");
3010 // Do we need to explicitly import anonymous namespaces into the parent scope?
3011 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3012 CmdArgs.push_back("-dwarf-explicit-import");
3014 RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
3017 void Clang::ConstructJob(Compilation &C, const JobAction &JA,
3018 const InputInfo &Output, const InputInfoList &Inputs,
3019 const ArgList &Args, const char *LinkingOutput) const {
3020 const llvm::Triple &RawTriple = getToolChain().getTriple();
3021 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
3022 const std::string &TripleStr = Triple.getTriple();
3025 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3026 const Driver &D = getToolChain().getDriver();
3027 ArgStringList CmdArgs;
3029 // Check number of inputs for sanity. We need at least one input.
3030 assert(Inputs.size() >= 1 && "Must have at least one input.");
3031 const InputInfo &Input = Inputs[0];
3032 // CUDA compilation may have multiple inputs (source file + results of
3033 // device-side compilations). OpenMP device jobs also take the host IR as a
3034 // second input. All other jobs are expected to have exactly one
3036 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3037 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3038 assert((IsCuda || (IsOpenMPDevice && Inputs.size() == 2) ||
3039 Inputs.size() == 1) &&
3040 "Unable to handle multiple inputs.");
3042 const llvm::Triple *AuxTriple =
3043 IsCuda ? getToolChain().getAuxTriple() : nullptr;
3045 bool IsWindowsGNU = RawTriple.isWindowsGNUEnvironment();
3046 bool IsWindowsCygnus = RawTriple.isWindowsCygwinEnvironment();
3047 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3048 bool IsIAMCU = RawTriple.isOSIAMCU();
3050 // Adjust IsWindowsXYZ for CUDA compilations. Even when compiling in device
3051 // mode (i.e., getToolchain().getTriple() is NVPTX, not Windows), we need to
3052 // pass Windows-specific flags to cc1.
3054 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3055 IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
3056 IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
3059 // C++ is not supported for IAMCU.
3060 if (IsIAMCU && types::isCXX(Input.getType()))
3061 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3063 // Invoke ourselves in -cc1 mode.
3065 // FIXME: Implement custom jobs for internal actions.
3066 CmdArgs.push_back("-cc1");
3068 // Add the "effective" target triple.
3069 CmdArgs.push_back("-triple");
3070 CmdArgs.push_back(Args.MakeArgString(TripleStr));
3072 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3073 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3074 Args.ClaimAllArgs(options::OPT_MJ);
3078 // We have to pass the triple of the host if compiling for a CUDA device and
3080 std::string NormalizedTriple;
3081 if (JA.isDeviceOffloading(Action::OFK_Cuda))
3082 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3086 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Cuda>()
3090 CmdArgs.push_back("-aux-triple");
3091 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3094 if (IsOpenMPDevice) {
3095 // We have to pass the triple of the host if compiling for an OpenMP device.
3096 std::string NormalizedTriple =
3097 C.getSingleOffloadToolChain<Action::OFK_Host>()
3100 CmdArgs.push_back("-aux-triple");
3101 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3104 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3105 Triple.getArch() == llvm::Triple::thumb)) {
3106 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3108 Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3110 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3114 // Push all default warning arguments that are specific to
3115 // the given target. These come before user provided warning options
3117 getToolChain().addClangWarningOptions(CmdArgs);
3119 // Select the appropriate action.
3120 RewriteKind rewriteKind = RK_None;
3122 if (isa<AnalyzeJobAction>(JA)) {
3123 assert(JA.getType() == types::TY_Plist && "Invalid output type.");
3124 CmdArgs.push_back("-analyze");
3125 } else if (isa<MigrateJobAction>(JA)) {
3126 CmdArgs.push_back("-migrate");
3127 } else if (isa<PreprocessJobAction>(JA)) {
3128 if (Output.getType() == types::TY_Dependencies)
3129 CmdArgs.push_back("-Eonly");
3131 CmdArgs.push_back("-E");
3132 if (Args.hasArg(options::OPT_rewrite_objc) &&
3133 !Args.hasArg(options::OPT_g_Group))
3134 CmdArgs.push_back("-P");
3136 } else if (isa<AssembleJobAction>(JA)) {
3137 CmdArgs.push_back("-emit-obj");
3139 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3141 // Also ignore explicit -force_cpusubtype_ALL option.
3142 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3143 } else if (isa<PrecompileJobAction>(JA)) {
3144 // Use PCH if the user requested it.
3145 bool UsePCH = D.CCCUsePCH;
3147 if (JA.getType() == types::TY_Nothing)
3148 CmdArgs.push_back("-fsyntax-only");
3149 else if (JA.getType() == types::TY_ModuleFile)
3150 CmdArgs.push_back("-emit-module-interface");
3152 CmdArgs.push_back("-emit-pch");
3154 CmdArgs.push_back("-emit-pth");
3155 } else if (isa<VerifyPCHJobAction>(JA)) {
3156 CmdArgs.push_back("-verify-pch");
3158 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
3159 "Invalid action for clang tool.");
3160 if (JA.getType() == types::TY_Nothing) {
3161 CmdArgs.push_back("-fsyntax-only");
3162 } else if (JA.getType() == types::TY_LLVM_IR ||
3163 JA.getType() == types::TY_LTO_IR) {
3164 CmdArgs.push_back("-emit-llvm");
3165 } else if (JA.getType() == types::TY_LLVM_BC ||
3166 JA.getType() == types::TY_LTO_BC) {
3167 CmdArgs.push_back("-emit-llvm-bc");
3168 } else if (JA.getType() == types::TY_PP_Asm) {
3169 CmdArgs.push_back("-S");
3170 } else if (JA.getType() == types::TY_AST) {
3171 CmdArgs.push_back("-emit-pch");
3172 } else if (JA.getType() == types::TY_ModuleFile) {
3173 CmdArgs.push_back("-module-file-info");
3174 } else if (JA.getType() == types::TY_RewrittenObjC) {
3175 CmdArgs.push_back("-rewrite-objc");
3176 rewriteKind = RK_NonFragile;
3177 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3178 CmdArgs.push_back("-rewrite-objc");
3179 rewriteKind = RK_Fragile;
3181 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
3184 // Preserve use-list order by default when emitting bitcode, so that
3185 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3186 // same result as running passes here. For LTO, we don't need to preserve
3187 // the use-list order, since serialization to bitcode is part of the flow.
3188 if (JA.getType() == types::TY_LLVM_BC)
3189 CmdArgs.push_back("-emit-llvm-uselists");
3191 if (D.isUsingLTO()) {
3192 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3194 // The Darwin and PS4 linkers currently use the legacy LTO API, which
3195 // does not support LTO unit features (CFI, whole program vtable opt)
3197 if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3198 D.getLTOMode() == LTOK_Full)
3199 CmdArgs.push_back("-flto-unit");
3203 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3204 if (!types::isLLVMIR(Input.getType()))
3205 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
3207 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3210 // Embed-bitcode option.
3211 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3212 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3213 // Add flags implied by -fembed-bitcode.
3214 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3215 // Disable all llvm IR level optimizations.
3216 CmdArgs.push_back("-disable-llvm-passes");
3218 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
3219 CmdArgs.push_back("-fembed-bitcode=marker");
3221 // We normally speed up the clang process a bit by skipping destructors at
3222 // exit, but when we're generating diagnostics we can rely on some of the
3224 if (!C.isForDiagnostics())
3225 CmdArgs.push_back("-disable-free");
3227 // Disable the verification pass in -asserts builds.
3229 CmdArgs.push_back("-disable-llvm-verifier");
3230 // Discard LLVM value names in -asserts builds.
3231 CmdArgs.push_back("-discard-value-names");
3234 // Set the main file name, so that debug info works even with
3236 CmdArgs.push_back("-main-file-name");
3237 CmdArgs.push_back(getBaseInputName(Args, Input));
3239 // Some flags which affect the language (via preprocessor
3241 if (Args.hasArg(options::OPT_static))
3242 CmdArgs.push_back("-static-define");
3244 if (isa<AnalyzeJobAction>(JA))
3245 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3247 CheckCodeGenerationOptions(D, Args);
3249 llvm::Reloc::Model RelocationModel;
3252 std::tie(RelocationModel, PICLevel, IsPIE) =
3253 ParsePICArgs(getToolChain(), Args);
3255 const char *RMName = RelocationModelName(RelocationModel);
3257 if ((RelocationModel == llvm::Reloc::ROPI ||
3258 RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3259 types::isCXX(Input.getType()) &&
3260 !Args.hasArg(options::OPT_fallow_unsupported))
3261 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3264 CmdArgs.push_back("-mrelocation-model");
3265 CmdArgs.push_back(RMName);
3268 CmdArgs.push_back("-pic-level");
3269 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3271 CmdArgs.push_back("-pic-is-pie");
3274 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3275 CmdArgs.push_back("-meabi");
3276 CmdArgs.push_back(A->getValue());
3279 CmdArgs.push_back("-mthread-model");
3280 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3281 if (!getToolChain().isThreadModelSupported(A->getValue()))
3282 D.Diag(diag::err_drv_invalid_thread_model_for_target)
3283 << A->getValue() << A->getAsString(Args);
3284 CmdArgs.push_back(A->getValue());
3287 CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel()));
3289 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3291 if (!Args.hasFlag(options::OPT_fmerge_all_constants,
3292 options::OPT_fno_merge_all_constants))
3293 CmdArgs.push_back("-fno-merge-all-constants");
3295 // LLVM Code Generator Options.
3297 if (Args.hasArg(options::OPT_frewrite_map_file) ||
3298 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3299 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3300 options::OPT_frewrite_map_file_EQ)) {
3301 StringRef Map = A->getValue();
3302 if (!llvm::sys::fs::exists(Map)) {
3303 D.Diag(diag::err_drv_no_such_file) << Map;
3305 CmdArgs.push_back("-frewrite-map-file");
3306 CmdArgs.push_back(A->getValue());
3312 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3313 StringRef v = A->getValue();
3314 CmdArgs.push_back("-mllvm");
3315 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3319 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3321 CmdArgs.push_back("-fno-jump-tables");
3323 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3324 options::OPT_fno_profile_sample_accurate, false))
3325 CmdArgs.push_back("-fprofile-sample-accurate");
3327 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3328 options::OPT_fno_preserve_as_comments, true))
3329 CmdArgs.push_back("-fno-preserve-as-comments");
3331 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3332 CmdArgs.push_back("-mregparm");
3333 CmdArgs.push_back(A->getValue());
3336 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3337 options::OPT_freg_struct_return)) {
3338 if (getToolChain().getArch() != llvm::Triple::x86) {
3339 D.Diag(diag::err_drv_unsupported_opt_for_target)
3340 << A->getSpelling() << RawTriple.str();
3341 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3342 CmdArgs.push_back("-fpcc-struct-return");
3344 assert(A->getOption().matches(options::OPT_freg_struct_return));
3345 CmdArgs.push_back("-freg-struct-return");
3349 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3350 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3352 if (shouldUseFramePointer(Args, RawTriple))
3353 CmdArgs.push_back("-mdisable-fp-elim");
3354 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3355 options::OPT_fno_zero_initialized_in_bss))
3356 CmdArgs.push_back("-mno-zero-initialized-in-bss");
3358 bool OFastEnabled = isOptimizationLevelFast(Args);
3359 // If -Ofast is the optimization level, then -fstrict-aliasing should be
3360 // enabled. This alias option is being used to simplify the hasFlag logic.
3361 OptSpecifier StrictAliasingAliasOption =
3362 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3363 // We turn strict aliasing off by default if we're in CL mode, since MSVC
3364 // doesn't do any TBAA.
3365 bool TBAAOnByDefault = !D.IsCLMode();
3366 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3367 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3368 CmdArgs.push_back("-relaxed-aliasing");
3369 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3370 options::OPT_fno_struct_path_tbaa))
3371 CmdArgs.push_back("-no-struct-path-tbaa");
3372 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3374 CmdArgs.push_back("-fstrict-enums");
3375 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3377 CmdArgs.push_back("-fno-strict-return");
3378 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3379 options::OPT_fno_allow_editor_placeholders, false))
3380 CmdArgs.push_back("-fallow-editor-placeholders");
3381 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3382 options::OPT_fno_strict_vtable_pointers,
3384 CmdArgs.push_back("-fstrict-vtable-pointers");
3385 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3386 options::OPT_fno_optimize_sibling_calls))
3387 CmdArgs.push_back("-mdisable-tail-calls");
3389 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
3390 options::OPT_fno_fine_grained_bitfield_accesses);
3392 // Handle segmented stacks.
3393 if (Args.hasArg(options::OPT_fsplit_stack))
3394 CmdArgs.push_back("-split-stacks");
3396 RenderFloatingPointOptions(getToolChain(), D, OFastEnabled, Args, CmdArgs);
3398 // Decide whether to use verbose asm. Verbose assembly is the default on
3399 // toolchains which have the integrated assembler on by default.
3400 bool IsIntegratedAssemblerDefault =
3401 getToolChain().IsIntegratedAssemblerDefault();
3402 if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
3403 IsIntegratedAssemblerDefault) ||
3404 Args.hasArg(options::OPT_dA))
3405 CmdArgs.push_back("-masm-verbose");
3407 if (!Args.hasFlag(options::OPT_fintegrated_as, options::OPT_fno_integrated_as,
3408 IsIntegratedAssemblerDefault))
3409 CmdArgs.push_back("-no-integrated-as");
3411 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
3412 CmdArgs.push_back("-mdebug-pass");
3413 CmdArgs.push_back("Structure");
3415 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
3416 CmdArgs.push_back("-mdebug-pass");
3417 CmdArgs.push_back("Arguments");
3420 // Enable -mconstructor-aliases except on darwin, where we have to work around
3421 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
3422 // aliases aren't supported.
3423 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
3424 CmdArgs.push_back("-mconstructor-aliases");
3426 // Darwin's kernel doesn't support guard variables; just die if we
3428 if (KernelOrKext && RawTriple.isOSDarwin())
3429 CmdArgs.push_back("-fforbid-guard-variables");
3431 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
3433 CmdArgs.push_back("-mms-bitfields");
3436 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
3437 options::OPT_mno_pie_copy_relocations,
3439 CmdArgs.push_back("-mpie-copy-relocations");
3442 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
3443 CmdArgs.push_back("-fno-plt");
3446 // -fhosted is default.
3447 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
3448 // use Freestanding.
3450 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3453 CmdArgs.push_back("-ffreestanding");
3455 // This is a coarse approximation of what llvm-gcc actually does, both
3456 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
3457 // complicated ways.
3458 bool AsynchronousUnwindTables =
3459 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
3460 options::OPT_fno_asynchronous_unwind_tables,
3461 (getToolChain().IsUnwindTablesDefault(Args) ||
3462 getToolChain().getSanitizerArgs().needsUnwindTables()) &&
3464 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
3465 AsynchronousUnwindTables))
3466 CmdArgs.push_back("-munwind-tables");
3468 getToolChain().addClangTargetOptions(Args, CmdArgs,
3469 JA.getOffloadingDeviceKind());
3471 if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
3472 CmdArgs.push_back("-mlimit-float-precision");
3473 CmdArgs.push_back(A->getValue());
3476 // FIXME: Handle -mtune=.
3477 (void)Args.hasArg(options::OPT_mtune_EQ);
3479 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
3480 CmdArgs.push_back("-mcode-model");
3481 CmdArgs.push_back(A->getValue());
3484 // Add the target cpu
3485 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
3487 CmdArgs.push_back("-target-cpu");
3488 CmdArgs.push_back(Args.MakeArgString(CPU));
3491 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
3493 // These two are potentially updated by AddClangCLArgs.
3494 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
3495 bool EmitCodeView = false;
3497 // Add clang-cl arguments.
3498 types::ID InputType = Input.getType();
3500 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
3502 const Arg *SplitDWARFArg = nullptr;
3503 RenderDebugOptions(getToolChain(), D, RawTriple, Args, EmitCodeView,
3504 IsWindowsMSVC, CmdArgs, DebugInfoKind, SplitDWARFArg);
3506 // Add the split debug info name to the command lines here so we
3507 // can propagate it to the backend.
3508 bool SplitDWARF = SplitDWARFArg && RawTriple.isOSLinux() &&
3509 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
3510 isa<BackendJobAction>(JA));
3511 const char *SplitDWARFOut;
3513 CmdArgs.push_back("-split-dwarf-file");
3514 SplitDWARFOut = SplitDebugName(Args, Input);
3515 CmdArgs.push_back(SplitDWARFOut);
3518 // Pass the linker version in use.
3519 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
3520 CmdArgs.push_back("-target-linker-version");
3521 CmdArgs.push_back(A->getValue());
3524 if (!shouldUseLeafFramePointer(Args, RawTriple))
3525 CmdArgs.push_back("-momit-leaf-frame-pointer");
3527 // Explicitly error on some things we know we don't support and can't just
3529 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
3531 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
3532 getToolChain().getArch() == llvm::Triple::x86) {
3533 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
3534 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
3535 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
3536 << Unsupported->getOption().getName();
3538 // The faltivec option has been superseded by the maltivec option.
3539 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
3540 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3541 << Unsupported->getOption().getName()
3542 << "please use -maltivec and include altivec.h explicitly";
3543 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
3544 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3545 << Unsupported->getOption().getName() << "please use -mno-altivec";
3548 Args.AddAllArgs(CmdArgs, options::OPT_v);
3549 Args.AddLastArg(CmdArgs, options::OPT_H);
3550 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
3551 CmdArgs.push_back("-header-include-file");
3552 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
3555 Args.AddLastArg(CmdArgs, options::OPT_P);
3556 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
3558 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
3559 CmdArgs.push_back("-diagnostic-log-file");
3560 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
3564 bool UseSeparateSections = isUseSeparateSections(Triple);
3566 if (Args.hasFlag(options::OPT_ffunction_sections,
3567 options::OPT_fno_function_sections, UseSeparateSections)) {
3568 CmdArgs.push_back("-ffunction-sections");
3571 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
3572 UseSeparateSections)) {
3573 CmdArgs.push_back("-fdata-sections");
3576 if (!Args.hasFlag(options::OPT_funique_section_names,
3577 options::OPT_fno_unique_section_names, true))
3578 CmdArgs.push_back("-fno-unique-section-names");
3580 if (auto *A = Args.getLastArg(
3581 options::OPT_finstrument_functions,
3582 options::OPT_finstrument_functions_after_inlining,
3583 options::OPT_finstrument_function_entry_bare))
3584 A->render(Args, CmdArgs);
3586 addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
3588 if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
3589 ABICompatArg->render(Args, CmdArgs);
3591 // Add runtime flag for PS4 when PGO or Coverage are enabled.
3592 if (RawTriple.isPS4CPU())
3593 PS4cpu::addProfileRTArgs(getToolChain(), Args, CmdArgs);
3595 // Pass options for controlling the default header search paths.
3596 if (Args.hasArg(options::OPT_nostdinc)) {
3597 CmdArgs.push_back("-nostdsysteminc");
3598 CmdArgs.push_back("-nobuiltininc");
3600 if (Args.hasArg(options::OPT_nostdlibinc))
3601 CmdArgs.push_back("-nostdsysteminc");
3602 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
3603 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
3606 // Pass the path to compiler resource files.
3607 CmdArgs.push_back("-resource-dir");
3608 CmdArgs.push_back(D.ResourceDir.c_str());
3610 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
3612 RenderARCMigrateToolOptions(D, Args, CmdArgs);
3614 // Add preprocessing options like -I, -D, etc. if we are using the
3617 // FIXME: Support -fpreprocessed
3618 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
3619 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
3621 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
3622 // that "The compiler can only warn and ignore the option if not recognized".
3623 // When building with ccache, it will pass -D options to clang even on
3624 // preprocessed inputs and configure concludes that -fPIC is not supported.
3625 Args.ClaimAllArgs(options::OPT_D);
3627 // Manually translate -O4 to -O3; let clang reject others.
3628 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3629 if (A->getOption().matches(options::OPT_O4)) {
3630 CmdArgs.push_back("-O3");
3631 D.Diag(diag::warn_O4_is_O3);
3633 A->render(Args, CmdArgs);
3637 // Warn about ignored options to clang.
3639 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
3640 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
3645 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
3646 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
3650 claimNoWarnArgs(Args);
3652 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
3654 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
3655 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
3656 CmdArgs.push_back("-pedantic");
3657 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
3658 Args.AddLastArg(CmdArgs, options::OPT_w);
3660 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
3661 // (-ansi is equivalent to -std=c89 or -std=c++98).
3663 // If a std is supplied, only add -trigraphs if it follows the
3665 bool ImplyVCPPCXXVer = false;
3666 if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
3667 if (Std->getOption().matches(options::OPT_ansi))
3668 if (types::isCXX(InputType))
3669 CmdArgs.push_back("-std=c++98");
3671 CmdArgs.push_back("-std=c89");
3673 Std->render(Args, CmdArgs);
3675 // If -f(no-)trigraphs appears after the language standard flag, honor it.
3676 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
3677 options::OPT_ftrigraphs,
3678 options::OPT_fno_trigraphs))
3680 A->render(Args, CmdArgs);
3682 // Honor -std-default.
3684 // FIXME: Clang doesn't correctly handle -std= when the input language
3685 // doesn't match. For the time being just ignore this for C++ inputs;
3686 // eventually we want to do all the standard defaulting here instead of
3687 // splitting it between the driver and clang -cc1.
3688 if (!types::isCXX(InputType))
3689 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
3691 else if (IsWindowsMSVC)
3692 ImplyVCPPCXXVer = true;
3694 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
3695 options::OPT_fno_trigraphs);
3698 // GCC's behavior for -Wwrite-strings is a bit strange:
3699 // * In C, this "warning flag" changes the types of string literals from
3700 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
3701 // for the discarded qualifier.
3702 // * In C++, this is just a normal warning flag.
3704 // Implementing this warning correctly in C is hard, so we follow GCC's
3705 // behavior for now. FIXME: Directly diagnose uses of a string literal as
3706 // a non-const char* in C, rather than using this crude hack.
3707 if (!types::isCXX(InputType)) {
3708 // FIXME: This should behave just like a warning flag, and thus should also
3709 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
3711 Args.getLastArg(options::OPT_Wwrite_strings,
3712 options::OPT_Wno_write_strings, options::OPT_w);
3714 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
3715 CmdArgs.push_back("-fconst-strings");
3718 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
3719 // during C++ compilation, which it is by default. GCC keeps this define even
3720 // in the presence of '-w', match this behavior bug-for-bug.
3721 if (types::isCXX(InputType) &&
3722 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
3724 CmdArgs.push_back("-fdeprecated-macro");
3727 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
3728 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
3729 if (Asm->getOption().matches(options::OPT_fasm))
3730 CmdArgs.push_back("-fgnu-keywords");
3732 CmdArgs.push_back("-fno-gnu-keywords");
3735 if (ShouldDisableDwarfDirectory(Args, getToolChain()))
3736 CmdArgs.push_back("-fno-dwarf-directory-asm");
3738 if (ShouldDisableAutolink(Args, getToolChain()))
3739 CmdArgs.push_back("-fno-autolink");
3741 // Add in -fdebug-compilation-dir if necessary.
3742 addDebugCompDirArg(Args, CmdArgs);
3744 for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
3745 StringRef Map = A->getValue();
3746 if (Map.find('=') == StringRef::npos)
3747 D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
3749 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
3753 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
3754 options::OPT_ftemplate_depth_EQ)) {
3755 CmdArgs.push_back("-ftemplate-depth");
3756 CmdArgs.push_back(A->getValue());
3759 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
3760 CmdArgs.push_back("-foperator-arrow-depth");
3761 CmdArgs.push_back(A->getValue());
3764 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
3765 CmdArgs.push_back("-fconstexpr-depth");
3766 CmdArgs.push_back(A->getValue());
3769 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
3770 CmdArgs.push_back("-fconstexpr-steps");
3771 CmdArgs.push_back(A->getValue());
3774 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
3775 CmdArgs.push_back("-fbracket-depth");
3776 CmdArgs.push_back(A->getValue());
3779 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
3780 options::OPT_Wlarge_by_value_copy_def)) {
3781 if (A->getNumValues()) {
3782 StringRef bytes = A->getValue();
3783 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
3785 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
3788 if (Args.hasArg(options::OPT_relocatable_pch))
3789 CmdArgs.push_back("-relocatable-pch");
3791 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
3792 CmdArgs.push_back("-fconstant-string-class");
3793 CmdArgs.push_back(A->getValue());
3796 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
3797 CmdArgs.push_back("-ftabstop");
3798 CmdArgs.push_back(A->getValue());
3801 CmdArgs.push_back("-ferror-limit");
3802 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
3803 CmdArgs.push_back(A->getValue());
3805 CmdArgs.push_back("19");
3807 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
3808 CmdArgs.push_back("-fmacro-backtrace-limit");
3809 CmdArgs.push_back(A->getValue());
3812 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
3813 CmdArgs.push_back("-ftemplate-backtrace-limit");
3814 CmdArgs.push_back(A->getValue());
3817 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
3818 CmdArgs.push_back("-fconstexpr-backtrace-limit");
3819 CmdArgs.push_back(A->getValue());
3822 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
3823 CmdArgs.push_back("-fspell-checking-limit");
3824 CmdArgs.push_back(A->getValue());
3827 // Pass -fmessage-length=.
3828 CmdArgs.push_back("-fmessage-length");
3829 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
3830 CmdArgs.push_back(A->getValue());
3832 // If -fmessage-length=N was not specified, determine whether this is a
3833 // terminal and, if so, implicitly define -fmessage-length appropriately.
3834 unsigned N = llvm::sys::Process::StandardErrColumns();
3835 CmdArgs.push_back(Args.MakeArgString(Twine(N)));
3838 // -fvisibility= and -fvisibility-ms-compat are of a piece.
3839 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
3840 options::OPT_fvisibility_ms_compat)) {
3841 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
3842 CmdArgs.push_back("-fvisibility");
3843 CmdArgs.push_back(A->getValue());
3845 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
3846 CmdArgs.push_back("-fvisibility");
3847 CmdArgs.push_back("hidden");
3848 CmdArgs.push_back("-ftype-visibility");
3849 CmdArgs.push_back("default");
3853 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
3855 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
3857 // Forward -f (flag) options which we can pass directly.
3858 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
3859 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
3860 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
3861 // Emulated TLS is enabled by default on Android and OpenBSD, and can be enabled
3862 // manually with -femulated-tls.
3863 bool EmulatedTLSDefault = Triple.isAndroid() || Triple.isOSOpenBSD() ||
3864 Triple.isWindowsCygwinEnvironment();
3865 if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
3866 EmulatedTLSDefault))
3867 CmdArgs.push_back("-femulated-tls");
3868 // AltiVec-like language extensions aren't relevant for assembling.
3869 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
3870 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
3872 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
3873 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
3875 // Forward flags for OpenMP. We don't do this if the current action is an
3876 // device offloading action other than OpenMP.
3877 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
3878 options::OPT_fno_openmp, false) &&
3879 (JA.isDeviceOffloading(Action::OFK_None) ||
3880 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
3881 switch (D.getOpenMPRuntime(Args)) {
3882 case Driver::OMPRT_OMP:
3883 case Driver::OMPRT_IOMP5:
3884 // Clang can generate useful OpenMP code for these two runtime libraries.
3885 CmdArgs.push_back("-fopenmp");
3887 // If no option regarding the use of TLS in OpenMP codegeneration is
3888 // given, decide a default based on the target. Otherwise rely on the
3889 // options and pass the right information to the frontend.
3890 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
3891 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
3892 CmdArgs.push_back("-fnoopenmp-use-tls");
3893 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3896 // By default, if Clang doesn't know how to generate useful OpenMP code
3897 // for a specific runtime library, we just don't pass the '-fopenmp' flag
3898 // down to the actual compilation.
3899 // FIXME: It would be better to have a mode which *only* omits IR
3900 // generation based on the OpenMP support so that we get consistent
3901 // semantic analysis, etc.
3906 const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs();
3907 Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType);
3909 const XRayArgs &XRay = getToolChain().getXRayArgs();
3910 XRay.addArgs(getToolChain(), Args, CmdArgs, InputType);
3912 if (getToolChain().SupportsProfiling())
3913 Args.AddLastArg(CmdArgs, options::OPT_pg);
3915 if (getToolChain().SupportsProfiling())
3916 Args.AddLastArg(CmdArgs, options::OPT_mfentry);
3918 // -flax-vector-conversions is default.
3919 if (!Args.hasFlag(options::OPT_flax_vector_conversions,
3920 options::OPT_fno_lax_vector_conversions))
3921 CmdArgs.push_back("-fno-lax-vector-conversions");
3923 if (Args.getLastArg(options::OPT_fapple_kext) ||
3924 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
3925 CmdArgs.push_back("-fapple-kext");
3927 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
3928 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
3929 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
3930 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
3931 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
3933 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
3934 CmdArgs.push_back("-ftrapv-handler");
3935 CmdArgs.push_back(A->getValue());
3938 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
3940 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
3941 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
3942 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
3943 if (A->getOption().matches(options::OPT_fwrapv))
3944 CmdArgs.push_back("-fwrapv");
3945 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
3946 options::OPT_fno_strict_overflow)) {
3947 if (A->getOption().matches(options::OPT_fno_strict_overflow))
3948 CmdArgs.push_back("-fwrapv");
3951 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
3952 options::OPT_fno_reroll_loops))
3953 if (A->getOption().matches(options::OPT_freroll_loops))
3954 CmdArgs.push_back("-freroll-loops");
3956 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
3957 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
3958 options::OPT_fno_unroll_loops);
3960 Args.AddLastArg(CmdArgs, options::OPT_pthread);
3962 RenderSSPOptions(getToolChain(), Args, CmdArgs, KernelOrKext);
3964 // Translate -mstackrealign
3965 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
3967 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
3969 if (Args.hasArg(options::OPT_mstack_alignment)) {
3970 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
3971 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
3974 if (Args.hasArg(options::OPT_mstack_probe_size)) {
3975 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
3978 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
3980 CmdArgs.push_back("-mstack-probe-size=0");
3983 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
3984 options::OPT_mno_restrict_it)) {
3985 if (A->getOption().matches(options::OPT_mrestrict_it)) {
3986 CmdArgs.push_back("-backend-option");
3987 CmdArgs.push_back("-arm-restrict-it");
3989 CmdArgs.push_back("-backend-option");
3990 CmdArgs.push_back("-arm-no-restrict-it");
3992 } else if (Triple.isOSWindows() &&
3993 (Triple.getArch() == llvm::Triple::arm ||
3994 Triple.getArch() == llvm::Triple::thumb)) {
3995 // Windows on ARM expects restricted IT blocks
3996 CmdArgs.push_back("-backend-option");
3997 CmdArgs.push_back("-arm-restrict-it");
4000 // Forward -cl options to -cc1
4001 RenderOpenCLOptions(Args, CmdArgs);
4003 // Forward -f options with positive and negative forms; we translate
4005 if (Arg *A = getLastProfileSampleUseArg(Args)) {
4006 StringRef fname = A->getValue();
4007 if (!llvm::sys::fs::exists(fname))
4008 D.Diag(diag::err_drv_no_such_file) << fname;
4010 A->render(Args, CmdArgs);
4013 RenderBuiltinOptions(getToolChain(), RawTriple, Args, CmdArgs);
4015 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4016 options::OPT_fno_assume_sane_operator_new))
4017 CmdArgs.push_back("-fno-assume-sane-operator-new");
4019 // -fblocks=0 is default.
4020 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4021 getToolChain().IsBlocksDefault()) ||
4022 (Args.hasArg(options::OPT_fgnu_runtime) &&
4023 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4024 !Args.hasArg(options::OPT_fno_blocks))) {
4025 CmdArgs.push_back("-fblocks");
4027 if (!Args.hasArg(options::OPT_fgnu_runtime) &&
4028 !getToolChain().hasBlocksRuntime())
4029 CmdArgs.push_back("-fblocks-runtime-optional");
4032 // -fencode-extended-block-signature=1 is default.
4033 if (getToolChain().IsEncodeExtendedBlockSignatureDefault())
4034 CmdArgs.push_back("-fencode-extended-block-signature");
4036 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4038 types::isCXX(InputType)) {
4039 CmdArgs.push_back("-fcoroutines-ts");
4042 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4043 options::OPT_fno_double_square_bracket_attributes);
4045 bool HaveModules = false;
4046 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4048 // -faccess-control is default.
4049 if (Args.hasFlag(options::OPT_fno_access_control,
4050 options::OPT_faccess_control, false))
4051 CmdArgs.push_back("-fno-access-control");
4053 // -felide-constructors is the default.
4054 if (Args.hasFlag(options::OPT_fno_elide_constructors,
4055 options::OPT_felide_constructors, false))
4056 CmdArgs.push_back("-fno-elide-constructors");
4058 ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode();
4060 if (KernelOrKext || (types::isCXX(InputType) &&
4061 (RTTIMode == ToolChain::RM_DisabledExplicitly ||
4062 RTTIMode == ToolChain::RM_DisabledImplicitly)))
4063 CmdArgs.push_back("-fno-rtti");
4065 // -fshort-enums=0 is default for all architectures except Hexagon.
4066 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4067 getToolChain().getArch() == llvm::Triple::hexagon))
4068 CmdArgs.push_back("-fshort-enums");
4070 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4072 // -fuse-cxa-atexit is default.
4074 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4075 !RawTriple.isOSWindows() &&
4076 RawTriple.getOS() != llvm::Triple::Solaris &&
4077 getToolChain().getArch() != llvm::Triple::hexagon &&
4078 getToolChain().getArch() != llvm::Triple::xcore &&
4079 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4080 RawTriple.hasEnvironment())) ||
4082 CmdArgs.push_back("-fno-use-cxa-atexit");
4084 // -fms-extensions=0 is default.
4085 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4087 CmdArgs.push_back("-fms-extensions");
4089 // -fno-use-line-directives is default.
4090 if (Args.hasFlag(options::OPT_fuse_line_directives,
4091 options::OPT_fno_use_line_directives, false))
4092 CmdArgs.push_back("-fuse-line-directives");
4094 // -fms-compatibility=0 is default.
4095 if (Args.hasFlag(options::OPT_fms_compatibility,
4096 options::OPT_fno_ms_compatibility,
4098 Args.hasFlag(options::OPT_fms_extensions,
4099 options::OPT_fno_ms_extensions, true))))
4100 CmdArgs.push_back("-fms-compatibility");
4102 VersionTuple MSVT = getToolChain().computeMSVCVersion(&D, Args);
4105 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4107 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4108 if (ImplyVCPPCXXVer) {
4109 StringRef LanguageStandard;
4110 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4111 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4112 .Case("c++14", "-std=c++14")
4113 .Case("c++17", "-std=c++17")
4114 .Case("c++latest", "-std=c++2a")
4116 if (LanguageStandard.empty())
4117 D.Diag(clang::diag::warn_drv_unused_argument)
4118 << StdArg->getAsString(Args);
4121 if (LanguageStandard.empty()) {
4122 if (IsMSVC2015Compatible)
4123 LanguageStandard = "-std=c++14";
4125 LanguageStandard = "-std=c++11";
4128 CmdArgs.push_back(LanguageStandard.data());
4131 // -fno-borland-extensions is default.
4132 if (Args.hasFlag(options::OPT_fborland_extensions,
4133 options::OPT_fno_borland_extensions, false))
4134 CmdArgs.push_back("-fborland-extensions");
4136 // -fno-declspec is default, except for PS4.
4137 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4139 CmdArgs.push_back("-fdeclspec");
4140 else if (Args.hasArg(options::OPT_fno_declspec))
4141 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4143 // -fthreadsafe-static is default, except for MSVC compatibility versions less
4145 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4146 options::OPT_fno_threadsafe_statics,
4147 !IsWindowsMSVC || IsMSVC2015Compatible))
4148 CmdArgs.push_back("-fno-threadsafe-statics");
4150 // -fno-delayed-template-parsing is default, except when targetting MSVC.
4151 // Many old Windows SDK versions require this to parse.
4152 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4153 // compiler. We should be able to disable this by default at some point.
4154 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4155 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4156 CmdArgs.push_back("-fdelayed-template-parsing");
4158 // -fgnu-keywords default varies depending on language; only pass if
4160 if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
4161 options::OPT_fno_gnu_keywords))
4162 A->render(Args, CmdArgs);
4164 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4166 CmdArgs.push_back("-fgnu89-inline");
4168 if (Args.hasArg(options::OPT_fno_inline))
4169 CmdArgs.push_back("-fno-inline");
4171 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
4172 options::OPT_finline_hint_functions,
4173 options::OPT_fno_inline_functions))
4174 InlineArg->render(Args, CmdArgs);
4176 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4177 options::OPT_fno_experimental_new_pass_manager);
4179 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4180 RenderObjCOptions(getToolChain(), D, RawTriple, Args, Runtime,
4181 rewriteKind != RK_None, Input, CmdArgs);
4183 if (Args.hasFlag(options::OPT_fapplication_extension,
4184 options::OPT_fno_application_extension, false))
4185 CmdArgs.push_back("-fapplication-extension");
4187 // Handle GCC-style exception args.
4188 if (!C.getDriver().IsCLMode())
4189 addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, Runtime,
4192 // Handle exception personalities
4193 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4194 options::OPT_fseh_exceptions,
4195 options::OPT_fdwarf_exceptions);
4197 const Option &Opt = A->getOption();
4198 if (Opt.matches(options::OPT_fsjlj_exceptions))
4199 CmdArgs.push_back("-fsjlj-exceptions");
4200 if (Opt.matches(options::OPT_fseh_exceptions))
4201 CmdArgs.push_back("-fseh-exceptions");
4202 if (Opt.matches(options::OPT_fdwarf_exceptions))
4203 CmdArgs.push_back("-fdwarf-exceptions");
4205 switch (getToolChain().GetExceptionModel(Args)) {
4208 case llvm::ExceptionHandling::DwarfCFI:
4209 CmdArgs.push_back("-fdwarf-exceptions");
4211 case llvm::ExceptionHandling::SjLj:
4212 CmdArgs.push_back("-fsjlj-exceptions");
4214 case llvm::ExceptionHandling::WinEH:
4215 CmdArgs.push_back("-fseh-exceptions");
4220 // C++ "sane" operator new.
4221 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4222 options::OPT_fno_assume_sane_operator_new))
4223 CmdArgs.push_back("-fno-assume-sane-operator-new");
4225 // -frelaxed-template-template-args is off by default, as it is a severe
4226 // breaking change until a corresponding change to template partial ordering
4228 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4229 options::OPT_fno_relaxed_template_template_args, false))
4230 CmdArgs.push_back("-frelaxed-template-template-args");
4232 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4234 if (Args.hasFlag(options::OPT_fsized_deallocation,
4235 options::OPT_fno_sized_deallocation, false))
4236 CmdArgs.push_back("-fsized-deallocation");
4238 // -faligned-allocation is on by default in C++17 onwards and otherwise off
4240 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4241 options::OPT_fno_aligned_allocation,
4242 options::OPT_faligned_new_EQ)) {
4243 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4244 CmdArgs.push_back("-fno-aligned-allocation");
4246 CmdArgs.push_back("-faligned-allocation");
4249 // The default new alignment can be specified using a dedicated option or via
4250 // a GCC-compatible option that also turns on aligned allocation.
4251 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4252 options::OPT_faligned_new_EQ))
4254 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4256 // -fconstant-cfstrings is default, and may be subject to argument translation
4258 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4259 options::OPT_fno_constant_cfstrings) ||
4260 !Args.hasFlag(options::OPT_mconstant_cfstrings,
4261 options::OPT_mno_constant_cfstrings))
4262 CmdArgs.push_back("-fno-constant-cfstrings");
4264 // -fno-pascal-strings is default, only pass non-default.
4265 if (Args.hasFlag(options::OPT_fpascal_strings,
4266 options::OPT_fno_pascal_strings, false))
4267 CmdArgs.push_back("-fpascal-strings");
4269 // Honor -fpack-struct= and -fpack-struct, if given. Note that
4270 // -fno-pack-struct doesn't apply to -fpack-struct=.
4271 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4272 std::string PackStructStr = "-fpack-struct=";
4273 PackStructStr += A->getValue();
4274 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4275 } else if (Args.hasFlag(options::OPT_fpack_struct,
4276 options::OPT_fno_pack_struct, false)) {
4277 CmdArgs.push_back("-fpack-struct=1");
4280 // Handle -fmax-type-align=N and -fno-type-align
4281 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4282 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4283 if (!SkipMaxTypeAlign) {
4284 std::string MaxTypeAlignStr = "-fmax-type-align=";
4285 MaxTypeAlignStr += A->getValue();
4286 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4288 } else if (RawTriple.isOSDarwin()) {
4289 if (!SkipMaxTypeAlign) {
4290 std::string MaxTypeAlignStr = "-fmax-type-align=16";
4291 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4295 // -fcommon is the default unless compiling kernel code or the target says so
4296 bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4297 if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4299 CmdArgs.push_back("-fno-common");
4301 // -fsigned-bitfields is default, and clang doesn't yet support
4302 // -funsigned-bitfields.
4303 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
4304 options::OPT_funsigned_bitfields))
4305 D.Diag(diag::warn_drv_clang_unsupported)
4306 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
4308 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
4309 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
4310 D.Diag(diag::err_drv_clang_unsupported)
4311 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
4313 // -finput_charset=UTF-8 is default. Reject others
4314 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
4315 StringRef value = inputCharset->getValue();
4316 if (!value.equals_lower("utf-8"))
4317 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4321 // -fexec_charset=UTF-8 is default. Reject others
4322 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
4323 StringRef value = execCharset->getValue();
4324 if (!value.equals_lower("utf-8"))
4325 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
4329 RenderDiagnosticsOptions(D, Args, CmdArgs);
4331 // -fno-asm-blocks is default.
4332 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4334 CmdArgs.push_back("-fasm-blocks");
4336 // -fgnu-inline-asm is default.
4337 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4338 options::OPT_fno_gnu_inline_asm, true))
4339 CmdArgs.push_back("-fno-gnu-inline-asm");
4341 // Enable vectorization per default according to the optimization level
4342 // selected. For optimization levels that want vectorization we use the alias
4343 // option to simplify the hasFlag logic.
4344 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4345 OptSpecifier VectorizeAliasOption =
4346 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4347 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4348 options::OPT_fno_vectorize, EnableVec))
4349 CmdArgs.push_back("-vectorize-loops");
4351 // -fslp-vectorize is enabled based on the optimization level selected.
4352 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4353 OptSpecifier SLPVectAliasOption =
4354 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4355 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4356 options::OPT_fno_slp_vectorize, EnableSLPVec))
4357 CmdArgs.push_back("-vectorize-slp");
4359 ParseMPreferVectorWidth(D, Args, CmdArgs);
4361 if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4362 A->render(Args, CmdArgs);
4364 if (Arg *A = Args.getLastArg(
4365 options::OPT_fsanitize_undefined_strip_path_components_EQ))
4366 A->render(Args, CmdArgs);
4368 // -fdollars-in-identifiers default varies depending on platform and
4369 // language; only pass if specified.
4370 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4371 options::OPT_fno_dollars_in_identifiers)) {
4372 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4373 CmdArgs.push_back("-fdollars-in-identifiers");
4375 CmdArgs.push_back("-fno-dollars-in-identifiers");
4378 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4379 // practical purposes.
4380 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4381 options::OPT_fno_unit_at_a_time)) {
4382 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4383 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4386 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4387 options::OPT_fno_apple_pragma_pack, false))
4388 CmdArgs.push_back("-fapple-pragma-pack");
4390 if (Args.hasFlag(options::OPT_fsave_optimization_record,
4391 options::OPT_foptimization_record_file_EQ,
4392 options::OPT_fno_save_optimization_record, false)) {
4393 CmdArgs.push_back("-opt-record-file");
4395 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4397 CmdArgs.push_back(A->getValue());
4401 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
4402 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
4403 F = FinalOutput->getValue();
4407 // Use the input filename.
4408 F = llvm::sys::path::stem(Input.getBaseInput());
4410 // If we're compiling for an offload architecture (i.e. a CUDA device),
4411 // we need to make the file name for the device compilation different
4412 // from the host compilation.
4413 if (!JA.isDeviceOffloading(Action::OFK_None) &&
4414 !JA.isDeviceOffloading(Action::OFK_Host)) {
4415 llvm::sys::path::replace_extension(F, "");
4416 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
4417 Triple.normalize());
4419 F += JA.getOffloadingArch();
4423 llvm::sys::path::replace_extension(F, "opt.yaml");
4424 CmdArgs.push_back(Args.MakeArgString(F));
4428 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
4429 options::OPT_fno_rewrite_imports, false);
4431 CmdArgs.push_back("-frewrite-imports");
4433 // Enable rewrite includes if the user's asked for it or if we're generating
4435 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
4436 // nice to enable this when doing a crashdump for modules as well.
4437 if (Args.hasFlag(options::OPT_frewrite_includes,
4438 options::OPT_fno_rewrite_includes, false) ||
4439 (C.isForDiagnostics() && (RewriteImports || !HaveModules)))
4440 CmdArgs.push_back("-frewrite-includes");
4442 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
4443 if (Arg *A = Args.getLastArg(options::OPT_traditional,
4444 options::OPT_traditional_cpp)) {
4445 if (isa<PreprocessJobAction>(JA))
4446 CmdArgs.push_back("-traditional-cpp");
4448 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
4451 Args.AddLastArg(CmdArgs, options::OPT_dM);
4452 Args.AddLastArg(CmdArgs, options::OPT_dD);
4454 // Handle serialized diagnostics.
4455 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
4456 CmdArgs.push_back("-serialize-diagnostic-file");
4457 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
4460 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
4461 CmdArgs.push_back("-fretain-comments-from-system-headers");
4463 // Forward -fcomment-block-commands to -cc1.
4464 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
4465 // Forward -fparse-all-comments to -cc1.
4466 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
4468 // Turn -fplugin=name.so into -load name.so
4469 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
4470 CmdArgs.push_back("-load");
4471 CmdArgs.push_back(A->getValue());
4475 // Setup statistics file output.
4476 if (const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ)) {
4477 StringRef SaveStats = A->getValue();
4479 SmallString<128> StatsFile;
4480 bool DoSaveStats = false;
4481 if (SaveStats == "obj") {
4482 if (Output.isFilename()) {
4483 StatsFile.assign(Output.getFilename());
4484 llvm::sys::path::remove_filename(StatsFile);
4487 } else if (SaveStats == "cwd") {
4490 D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
4494 StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
4495 llvm::sys::path::append(StatsFile, BaseName);
4496 llvm::sys::path::replace_extension(StatsFile, "stats");
4497 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") +
4502 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
4504 // -finclude-default-header flag is for preprocessor,
4505 // do not pass it to other cc1 commands when save-temps is enabled
4506 if (C.getDriver().isSaveTempsEnabled() &&
4507 !isa<PreprocessJobAction>(JA)) {
4508 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
4510 if (StringRef(Arg->getValue()) != "-finclude-default-header")
4511 CmdArgs.push_back(Arg->getValue());
4515 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
4517 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
4520 // We translate this by hand to the -cc1 argument, since nightly test uses
4521 // it and developers have been trained to spell it with -mllvm. Both
4522 // spellings are now deprecated and should be removed.
4523 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
4524 CmdArgs.push_back("-disable-llvm-optzns");
4526 A->render(Args, CmdArgs);
4530 // With -save-temps, we want to save the unoptimized bitcode output from the
4531 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
4533 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
4534 // has slightly different breakdown between stages.
4535 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
4536 // pristine IR generated by the frontend. Ideally, a new compile action should
4537 // be added so both IR can be captured.
4538 if (C.getDriver().isSaveTempsEnabled() &&
4539 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
4540 isa<CompileJobAction>(JA))
4541 CmdArgs.push_back("-disable-llvm-passes");
4543 if (Output.getType() == types::TY_Dependencies) {
4544 // Handled with other dependency code.
4545 } else if (Output.isFilename()) {
4546 CmdArgs.push_back("-o");
4547 CmdArgs.push_back(Output.getFilename());
4549 assert(Output.isNothing() && "Invalid output.");
4552 addDashXForInput(Args, Input, CmdArgs);
4554 if (Input.isFilename())
4555 CmdArgs.push_back(Input.getFilename());
4557 Input.getInputArg().renderAsInput(Args, CmdArgs);
4559 Args.AddAllArgs(CmdArgs, options::OPT_undef);
4561 const char *Exec = D.getClangProgramPath();
4563 // Optionally embed the -cc1 level arguments into the debug info, for build
4565 // Also record command line arguments into the debug info if
4566 // -grecord-gcc-switches options is set on.
4567 // By default, -gno-record-gcc-switches is set on and no recording.
4568 if (getToolChain().UseDwarfDebugFlags() ||
4569 Args.hasFlag(options::OPT_grecord_gcc_switches,
4570 options::OPT_gno_record_gcc_switches, false)) {
4571 ArgStringList OriginalArgs;
4572 for (const auto &Arg : Args)
4573 Arg->render(Args, OriginalArgs);
4575 SmallString<256> Flags;
4577 for (const char *OriginalArg : OriginalArgs) {
4578 SmallString<128> EscapedArg;
4579 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
4581 Flags += EscapedArg;
4583 CmdArgs.push_back("-dwarf-debug-flags");
4584 CmdArgs.push_back(Args.MakeArgString(Flags));
4587 // Host-side cuda compilation receives device-side outputs as Inputs[1...].
4588 // Include them with -fcuda-include-gpubinary.
4589 if (IsCuda && Inputs.size() > 1)
4590 for (auto I = std::next(Inputs.begin()), E = Inputs.end(); I != E; ++I) {
4591 CmdArgs.push_back("-fcuda-include-gpubinary");
4592 CmdArgs.push_back(I->getFilename());
4595 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
4596 // to specify the result of the compile phase on the host, so the meaningful
4597 // device declarations can be identified. Also, -fopenmp-is-device is passed
4598 // along to tell the frontend that it is generating code for a device, so that
4599 // only the relevant declarations are emitted.
4600 if (IsOpenMPDevice) {
4601 CmdArgs.push_back("-fopenmp-is-device");
4602 if (Inputs.size() == 2) {
4603 CmdArgs.push_back("-fopenmp-host-ir-file-path");
4604 CmdArgs.push_back(Args.MakeArgString(Inputs.back().getFilename()));
4608 // For all the host OpenMP offloading compile jobs we need to pass the targets
4609 // information using -fopenmp-targets= option.
4610 if (isa<CompileJobAction>(JA) && JA.isHostOffloading(Action::OFK_OpenMP)) {
4611 SmallString<128> TargetInfo("-fopenmp-targets=");
4613 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
4614 assert(Tgts && Tgts->getNumValues() &&
4615 "OpenMP offloading has to have targets specified.");
4616 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
4619 // We need to get the string from the triple because it may be not exactly
4620 // the same as the one we get directly from the arguments.
4621 llvm::Triple T(Tgts->getValue(i));
4622 TargetInfo += T.getTriple();
4624 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
4627 bool WholeProgramVTables =
4628 Args.hasFlag(options::OPT_fwhole_program_vtables,
4629 options::OPT_fno_whole_program_vtables, false);
4630 if (WholeProgramVTables) {
4631 if (!D.isUsingLTO())
4632 D.Diag(diag::err_drv_argument_only_allowed_with)
4633 << "-fwhole-program-vtables"
4635 CmdArgs.push_back("-fwhole-program-vtables");
4638 // Finally add the compile command to the compilation.
4639 if (Args.hasArg(options::OPT__SLASH_fallback) &&
4640 Output.getType() == types::TY_Object &&
4641 (InputType == types::TY_C || InputType == types::TY_CXX)) {
4643 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
4644 C.addCommand(llvm::make_unique<FallbackCommand>(
4645 JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
4646 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
4647 isa<PrecompileJobAction>(JA)) {
4648 // In /fallback builds, run the main compilation even if the pch generation
4649 // fails, so that the main compilation's fallback to cl.exe runs.
4650 C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
4653 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
4656 // Handle the debug info splitting at object creation time if we're
4657 // creating an object.
4658 // TODO: Currently only works on linux with newer objcopy.
4659 if (SplitDWARF && Output.getType() == types::TY_Object)
4660 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, SplitDWARFOut);
4662 if (Arg *A = Args.getLastArg(options::OPT_pg))
4663 if (Args.hasArg(options::OPT_fomit_frame_pointer))
4664 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
4665 << A->getAsString(Args);
4667 // Claim some arguments which clang supports automatically.
4669 // -fpch-preprocess is used with gcc to add a special marker in the output to
4670 // include the PCH file. Clang's PTH solution is completely transparent, so we
4671 // do not need to deal with it at all.
4672 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
4674 // Claim some arguments which clang doesn't support, but we don't
4675 // care to warn the user about.
4676 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
4677 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
4679 // Disable warnings for clang -E -emit-llvm foo.c
4680 Args.ClaimAllArgs(options::OPT_emit_llvm);
4683 Clang::Clang(const ToolChain &TC)
4684 // CAUTION! The first constructor argument ("clang") is not arbitrary,
4685 // as it is for other tools. Some operations on a Tool actually test
4686 // whether that tool is Clang based on the Tool's Name as a string.
4687 : Tool("clang", "clang frontend", TC, RF_Full) {}
4691 /// Add options related to the Objective-C runtime/ABI.
4693 /// Returns true if the runtime is non-fragile.
4694 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
4695 ArgStringList &cmdArgs,
4696 RewriteKind rewriteKind) const {
4697 // Look for the controlling runtime option.
4699 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
4700 options::OPT_fobjc_runtime_EQ);
4702 // Just forward -fobjc-runtime= to the frontend. This supercedes
4703 // options about fragility.
4705 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
4706 ObjCRuntime runtime;
4707 StringRef value = runtimeArg->getValue();
4708 if (runtime.tryParse(value)) {
4709 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
4713 runtimeArg->render(args, cmdArgs);
4717 // Otherwise, we'll need the ABI "version". Version numbers are
4718 // slightly confusing for historical reasons:
4719 // 1 - Traditional "fragile" ABI
4720 // 2 - Non-fragile ABI, version 1
4721 // 3 - Non-fragile ABI, version 2
4722 unsigned objcABIVersion = 1;
4723 // If -fobjc-abi-version= is present, use that to set the version.
4724 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
4725 StringRef value = abiArg->getValue();
4728 else if (value == "2")
4730 else if (value == "3")
4733 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
4735 // Otherwise, determine if we are using the non-fragile ABI.
4736 bool nonFragileABIIsDefault =
4737 (rewriteKind == RK_NonFragile ||
4738 (rewriteKind == RK_None &&
4739 getToolChain().IsObjCNonFragileABIDefault()));
4740 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
4741 options::OPT_fno_objc_nonfragile_abi,
4742 nonFragileABIIsDefault)) {
4743 // Determine the non-fragile ABI version to use.
4744 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
4745 unsigned nonFragileABIVersion = 1;
4747 unsigned nonFragileABIVersion = 2;
4751 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
4752 StringRef value = abiArg->getValue();
4754 nonFragileABIVersion = 1;
4755 else if (value == "2")
4756 nonFragileABIVersion = 2;
4758 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4762 objcABIVersion = 1 + nonFragileABIVersion;
4768 // We don't actually care about the ABI version other than whether
4769 // it's non-fragile.
4770 bool isNonFragile = objcABIVersion != 1;
4772 // If we have no runtime argument, ask the toolchain for its default runtime.
4773 // However, the rewriter only really supports the Mac runtime, so assume that.
4774 ObjCRuntime runtime;
4776 switch (rewriteKind) {
4778 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4781 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
4784 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4789 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
4790 // On Darwin, make this use the default behavior for the toolchain.
4791 if (getToolChain().getTriple().isOSDarwin()) {
4792 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4794 // Otherwise, build for a generic macosx port.
4796 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4801 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
4802 // Legacy behaviour is to target the gnustep runtime if we are in
4803 // non-fragile mode or the GCC runtime in fragile mode.
4805 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(1, 6));
4807 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
4811 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
4815 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
4816 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
4824 bool Asynch = false;
4825 bool NoUnwindC = false;
4827 } // end anonymous namespace
4829 /// /EH controls whether to run destructor cleanups when exceptions are
4830 /// thrown. There are three modifiers:
4831 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
4832 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
4833 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
4834 /// - c: Assume that extern "C" functions are implicitly nounwind.
4835 /// The default is /EHs-c-, meaning cleanups are disabled.
4836 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
4839 std::vector<std::string> EHArgs =
4840 Args.getAllArgValues(options::OPT__SLASH_EH);
4841 for (auto EHVal : EHArgs) {
4842 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
4845 EH.Asynch = maybeConsumeDash(EHVal, I);
4850 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
4853 EH.Synch = maybeConsumeDash(EHVal, I);
4860 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
4864 // The /GX, /GX- flags are only processed if there are not /EH flags.
4865 // The default is that /GX is not specified.
4866 if (EHArgs.empty() &&
4867 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
4868 /*default=*/false)) {
4870 EH.NoUnwindC = true;
4876 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
4877 ArgStringList &CmdArgs,
4878 codegenoptions::DebugInfoKind *DebugInfoKind,
4879 bool *EmitCodeView) const {
4880 unsigned RTOptionID = options::OPT__SLASH_MT;
4882 if (Args.hasArg(options::OPT__SLASH_LDd))
4883 // The /LDd option implies /MTd. The dependent lib part can be overridden,
4884 // but defining _DEBUG is sticky.
4885 RTOptionID = options::OPT__SLASH_MTd;
4887 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
4888 RTOptionID = A->getOption().getID();
4890 StringRef FlagForCRT;
4891 switch (RTOptionID) {
4892 case options::OPT__SLASH_MD:
4893 if (Args.hasArg(options::OPT__SLASH_LDd))
4894 CmdArgs.push_back("-D_DEBUG");
4895 CmdArgs.push_back("-D_MT");
4896 CmdArgs.push_back("-D_DLL");
4897 FlagForCRT = "--dependent-lib=msvcrt";
4899 case options::OPT__SLASH_MDd:
4900 CmdArgs.push_back("-D_DEBUG");
4901 CmdArgs.push_back("-D_MT");
4902 CmdArgs.push_back("-D_DLL");
4903 FlagForCRT = "--dependent-lib=msvcrtd";
4905 case options::OPT__SLASH_MT:
4906 if (Args.hasArg(options::OPT__SLASH_LDd))
4907 CmdArgs.push_back("-D_DEBUG");
4908 CmdArgs.push_back("-D_MT");
4909 CmdArgs.push_back("-flto-visibility-public-std");
4910 FlagForCRT = "--dependent-lib=libcmt";
4912 case options::OPT__SLASH_MTd:
4913 CmdArgs.push_back("-D_DEBUG");
4914 CmdArgs.push_back("-D_MT");
4915 CmdArgs.push_back("-flto-visibility-public-std");
4916 FlagForCRT = "--dependent-lib=libcmtd";
4919 llvm_unreachable("Unexpected option ID.");
4922 if (Args.hasArg(options::OPT__SLASH_Zl)) {
4923 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
4925 CmdArgs.push_back(FlagForCRT.data());
4927 // This provides POSIX compatibility (maps 'open' to '_open'), which most
4928 // users want. The /Za flag to cl.exe turns this off, but it's not
4929 // implemented in clang.
4930 CmdArgs.push_back("--dependent-lib=oldnames");
4933 // Both /showIncludes and /E (and /EP) write to stdout. Allowing both
4934 // would produce interleaved output, so ignore /showIncludes in such cases.
4935 if ((!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_EP)) ||
4936 (Args.hasArg(options::OPT__SLASH_P) &&
4937 Args.hasArg(options::OPT__SLASH_EP) && !Args.hasArg(options::OPT_E)))
4938 if (Arg *A = Args.getLastArg(options::OPT_show_includes))
4939 A->render(Args, CmdArgs);
4941 // This controls whether or not we emit RTTI data for polymorphic types.
4942 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
4944 CmdArgs.push_back("-fno-rtti-data");
4946 // This controls whether or not we emit stack-protector instrumentation.
4947 // In MSVC, Buffer Security Check (/GS) is on by default.
4948 if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
4949 /*default=*/true)) {
4950 CmdArgs.push_back("-stack-protector");
4951 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
4954 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
4955 if (Arg *DebugInfoArg =
4956 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
4957 options::OPT_gline_tables_only)) {
4958 *EmitCodeView = true;
4959 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
4960 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
4962 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
4963 CmdArgs.push_back("-gcodeview");
4965 *EmitCodeView = false;
4968 const Driver &D = getToolChain().getDriver();
4969 EHFlags EH = parseClangCLEHFlags(D, Args);
4970 if (EH.Synch || EH.Asynch) {
4971 if (types::isCXX(InputType))
4972 CmdArgs.push_back("-fcxx-exceptions");
4973 CmdArgs.push_back("-fexceptions");
4975 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
4976 CmdArgs.push_back("-fexternc-nounwind");
4978 // /EP should expand to -E -P.
4979 if (Args.hasArg(options::OPT__SLASH_EP)) {
4980 CmdArgs.push_back("-E");
4981 CmdArgs.push_back("-P");
4984 unsigned VolatileOptionID;
4985 if (getToolChain().getArch() == llvm::Triple::x86_64 ||
4986 getToolChain().getArch() == llvm::Triple::x86)
4987 VolatileOptionID = options::OPT__SLASH_volatile_ms;
4989 VolatileOptionID = options::OPT__SLASH_volatile_iso;
4991 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
4992 VolatileOptionID = A->getOption().getID();
4994 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
4995 CmdArgs.push_back("-fms-volatile");
4997 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
4998 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
4999 if (MostGeneralArg && BestCaseArg)
5000 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5001 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5003 if (MostGeneralArg) {
5004 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5005 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5006 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5008 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5009 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5010 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5011 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5012 << FirstConflict->getAsString(Args)
5013 << SecondConflict->getAsString(Args);
5016 CmdArgs.push_back("-fms-memptr-rep=single");
5017 else if (MultipleArg)
5018 CmdArgs.push_back("-fms-memptr-rep=multiple");
5020 CmdArgs.push_back("-fms-memptr-rep=virtual");
5023 // Parse the default calling convention options.
5025 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5026 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5027 options::OPT__SLASH_Gregcall)) {
5028 unsigned DCCOptId = CCArg->getOption().getID();
5029 const char *DCCFlag = nullptr;
5030 bool ArchSupported = true;
5031 llvm::Triple::ArchType Arch = getToolChain().getArch();
5033 case options::OPT__SLASH_Gd:
5034 DCCFlag = "-fdefault-calling-conv=cdecl";
5036 case options::OPT__SLASH_Gr:
5037 ArchSupported = Arch == llvm::Triple::x86;
5038 DCCFlag = "-fdefault-calling-conv=fastcall";
5040 case options::OPT__SLASH_Gz:
5041 ArchSupported = Arch == llvm::Triple::x86;
5042 DCCFlag = "-fdefault-calling-conv=stdcall";
5044 case options::OPT__SLASH_Gv:
5045 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5046 DCCFlag = "-fdefault-calling-conv=vectorcall";
5048 case options::OPT__SLASH_Gregcall:
5049 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5050 DCCFlag = "-fdefault-calling-conv=regcall";
5054 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5055 if (ArchSupported && DCCFlag)
5056 CmdArgs.push_back(DCCFlag);
5059 if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
5060 A->render(Args, CmdArgs);
5062 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5063 CmdArgs.push_back("-fdiagnostics-format");
5064 if (Args.hasArg(options::OPT__SLASH_fallback))
5065 CmdArgs.push_back("msvc-fallback");
5067 CmdArgs.push_back("msvc");
5071 visualstudio::Compiler *Clang::getCLFallback() const {
5073 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5074 return CLFallback.get();
5078 const char *Clang::getBaseInputName(const ArgList &Args,
5079 const InputInfo &Input) {
5080 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5083 const char *Clang::getBaseInputStem(const ArgList &Args,
5084 const InputInfoList &Inputs) {
5085 const char *Str = getBaseInputName(Args, Inputs[0]);
5087 if (const char *End = strrchr(Str, '.'))
5088 return Args.MakeArgString(std::string(Str, End));
5093 const char *Clang::getDependencyFileName(const ArgList &Args,
5094 const InputInfoList &Inputs) {
5095 // FIXME: Think about this more.
5098 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5099 std::string Str(OutputOpt->getValue());
5100 Res = Str.substr(0, Str.rfind('.'));
5102 Res = getBaseInputStem(Args, Inputs);
5104 return Args.MakeArgString(Res + ".d");
5109 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5110 ArgStringList &CmdArgs) const {
5113 const llvm::Triple &Triple = getToolChain().getTriple();
5114 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5116 CmdArgs.push_back("-target-abi");
5117 CmdArgs.push_back(ABIName.data());
5120 void ClangAs::AddX86TargetArgs(const ArgList &Args,
5121 ArgStringList &CmdArgs) const {
5122 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5123 StringRef Value = A->getValue();
5124 if (Value == "intel" || Value == "att") {
5125 CmdArgs.push_back("-mllvm");
5126 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5128 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
5129 << A->getOption().getName() << Value;
5134 void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
5135 const InputInfo &Output, const InputInfoList &Inputs,
5136 const ArgList &Args,
5137 const char *LinkingOutput) const {
5138 ArgStringList CmdArgs;
5140 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
5141 const InputInfo &Input = Inputs[0];
5143 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
5144 const std::string &TripleStr = Triple.getTriple();
5145 const auto &D = getToolChain().getDriver();
5147 // Don't warn about "clang -w -c foo.s"
5148 Args.ClaimAllArgs(options::OPT_w);
5149 // and "clang -emit-llvm -c foo.s"
5150 Args.ClaimAllArgs(options::OPT_emit_llvm);
5152 claimNoWarnArgs(Args);
5154 // Invoke ourselves in -cc1as mode.
5156 // FIXME: Implement custom jobs for internal actions.
5157 CmdArgs.push_back("-cc1as");
5159 // Add the "effective" target triple.
5160 CmdArgs.push_back("-triple");
5161 CmdArgs.push_back(Args.MakeArgString(TripleStr));
5163 // Set the output mode, we currently only expect to be used as a real
5165 CmdArgs.push_back("-filetype");
5166 CmdArgs.push_back("obj");
5168 // Set the main file name, so that debug info works even with
5169 // -save-temps or preprocessed assembly.
5170 CmdArgs.push_back("-main-file-name");
5171 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
5173 // Add the target cpu
5174 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
5176 CmdArgs.push_back("-target-cpu");
5177 CmdArgs.push_back(Args.MakeArgString(CPU));
5180 // Add the target features
5181 getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
5183 // Ignore explicit -force_cpusubtype_ALL option.
5184 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
5186 // Pass along any -I options so we get proper .include search paths.
5187 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
5189 // Determine the original source input.
5190 const Action *SourceAction = &JA;
5191 while (SourceAction->getKind() != Action::InputClass) {
5192 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
5193 SourceAction = SourceAction->getInputs()[0];
5196 // Forward -g and handle debug info related flags, assuming we are dealing
5197 // with an actual assembly file.
5198 bool WantDebug = false;
5199 unsigned DwarfVersion = 0;
5200 Args.ClaimAllArgs(options::OPT_g_Group);
5201 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
5202 WantDebug = !A->getOption().matches(options::OPT_g0) &&
5203 !A->getOption().matches(options::OPT_ggdb0);
5205 DwarfVersion = DwarfVersionNum(A->getSpelling());
5207 if (DwarfVersion == 0)
5208 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
5210 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
5212 if (SourceAction->getType() == types::TY_Asm ||
5213 SourceAction->getType() == types::TY_PP_Asm) {
5214 // You might think that it would be ok to set DebugInfoKind outside of
5215 // the guard for source type, however there is a test which asserts
5216 // that some assembler invocation receives no -debug-info-kind,
5217 // and it's not clear whether that test is just overly restrictive.
5218 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
5219 : codegenoptions::NoDebugInfo);
5220 // Add the -fdebug-compilation-dir flag if needed.
5221 addDebugCompDirArg(Args, CmdArgs);
5223 // Set the AT_producer to the clang version when using the integrated
5224 // assembler on assembly source files.
5225 CmdArgs.push_back("-dwarf-debug-producer");
5226 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
5228 // And pass along -I options
5229 Args.AddAllArgs(CmdArgs, options::OPT_I);
5231 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
5232 llvm::DebuggerKind::Default);
5233 RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
5236 // Handle -fPIC et al -- the relocation-model affects the assembler
5237 // for some targets.
5238 llvm::Reloc::Model RelocationModel;
5241 std::tie(RelocationModel, PICLevel, IsPIE) =
5242 ParsePICArgs(getToolChain(), Args);
5244 const char *RMName = RelocationModelName(RelocationModel);
5246 CmdArgs.push_back("-mrelocation-model");
5247 CmdArgs.push_back(RMName);
5250 // Optionally embed the -cc1as level arguments into the debug info, for build
5252 if (getToolChain().UseDwarfDebugFlags()) {
5253 ArgStringList OriginalArgs;
5254 for (const auto &Arg : Args)
5255 Arg->render(Args, OriginalArgs);
5257 SmallString<256> Flags;
5258 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5260 for (const char *OriginalArg : OriginalArgs) {
5261 SmallString<128> EscapedArg;
5262 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5264 Flags += EscapedArg;
5266 CmdArgs.push_back("-dwarf-debug-flags");
5267 CmdArgs.push_back(Args.MakeArgString(Flags));
5270 // FIXME: Add -static support, once we have it.
5272 // Add target specific flags.
5273 switch (getToolChain().getArch()) {
5277 case llvm::Triple::mips:
5278 case llvm::Triple::mipsel:
5279 case llvm::Triple::mips64:
5280 case llvm::Triple::mips64el:
5281 AddMIPSTargetArgs(Args, CmdArgs);
5284 case llvm::Triple::x86:
5285 case llvm::Triple::x86_64:
5286 AddX86TargetArgs(Args, CmdArgs);
5289 case llvm::Triple::arm:
5290 case llvm::Triple::armeb:
5291 case llvm::Triple::thumb:
5292 case llvm::Triple::thumbeb:
5293 // This isn't in AddARMTargetArgs because we want to do this for assembly
5295 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
5296 options::OPT_mno_default_build_attributes, true)) {
5297 CmdArgs.push_back("-mllvm");
5298 CmdArgs.push_back("-arm-add-build-attributes");
5303 // Consume all the warning flags. Usually this would be handled more
5304 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
5305 // doesn't handle that so rather than warning about unused flags that are
5306 // actually used, we'll lie by omission instead.
5307 // FIXME: Stop lying and consume only the appropriate driver flags
5308 Args.ClaimAllArgs(options::OPT_W_Group);
5310 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
5311 getToolChain().getDriver());
5313 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
5315 assert(Output.isFilename() && "Unexpected lipo output.");
5316 CmdArgs.push_back("-o");
5317 CmdArgs.push_back(Output.getFilename());
5319 assert(Input.isFilename() && "Invalid input.");
5320 CmdArgs.push_back(Input.getFilename());
5322 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5323 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5325 // Handle the debug info splitting at object creation time if we're
5326 // creating an object.
5327 // TODO: Currently only works on linux with newer objcopy.
5328 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
5329 getToolChain().getTriple().isOSLinux())
5330 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
5331 SplitDebugName(Args, Input));
5334 // Begin OffloadBundler
5336 void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
5337 const InputInfo &Output,
5338 const InputInfoList &Inputs,
5339 const llvm::opt::ArgList &TCArgs,
5340 const char *LinkingOutput) const {
5341 // The version with only one output is expected to refer to a bundling job.
5342 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
5344 // The bundling command looks like this:
5345 // clang-offload-bundler -type=bc
5346 // -targets=host-triple,openmp-triple1,openmp-triple2
5347 // -outputs=input_file
5348 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5350 ArgStringList CmdArgs;
5353 CmdArgs.push_back(TCArgs.MakeArgString(
5354 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
5356 assert(JA.getInputs().size() == Inputs.size() &&
5357 "Not have inputs for all dependence actions??");
5360 SmallString<128> Triples;
5361 Triples += "-targets=";
5362 for (unsigned I = 0; I < Inputs.size(); ++I) {
5366 // Find ToolChain for this input.
5367 Action::OffloadKind CurKind = Action::OFK_Host;
5368 const ToolChain *CurTC = &getToolChain();
5369 const Action *CurDep = JA.getInputs()[I];
5371 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
5373 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
5374 assert(CurTC == nullptr && "Expected one dependence!");
5375 CurKind = A->getOffloadingDeviceKind();
5379 Triples += Action::GetOffloadKindName(CurKind);
5381 Triples += CurTC->getTriple().normalize();
5383 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5385 // Get bundled file command.
5387 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
5389 // Get unbundled files command.
5390 SmallString<128> UB;
5392 for (unsigned I = 0; I < Inputs.size(); ++I) {
5396 // Find ToolChain for this input.
5397 const ToolChain *CurTC = &getToolChain();
5398 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
5400 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
5401 assert(CurTC == nullptr && "Expected one dependence!");
5405 UB += CurTC->getInputFilename(Inputs[I]);
5407 CmdArgs.push_back(TCArgs.MakeArgString(UB));
5409 // All the inputs are encoded as commands.
5410 C.addCommand(llvm::make_unique<Command>(
5412 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5416 void OffloadBundler::ConstructJobMultipleOutputs(
5417 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
5418 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
5419 const char *LinkingOutput) const {
5420 // The version with multiple outputs is expected to refer to a unbundling job.
5421 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
5423 // The unbundling command looks like this:
5424 // clang-offload-bundler -type=bc
5425 // -targets=host-triple,openmp-triple1,openmp-triple2
5426 // -inputs=input_file
5427 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5430 ArgStringList CmdArgs;
5432 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
5433 InputInfo Input = Inputs.front();
5436 CmdArgs.push_back(TCArgs.MakeArgString(
5437 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
5440 SmallString<128> Triples;
5441 Triples += "-targets=";
5442 auto DepInfo = UA.getDependentActionsInfo();
5443 for (unsigned I = 0; I < DepInfo.size(); ++I) {
5447 auto &Dep = DepInfo[I];
5448 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
5450 Triples += Dep.DependentToolChain->getTriple().normalize();
5453 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5455 // Get bundled file command.
5457 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
5459 // Get unbundled files command.
5460 SmallString<128> UB;
5462 for (unsigned I = 0; I < Outputs.size(); ++I) {
5465 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
5467 CmdArgs.push_back(TCArgs.MakeArgString(UB));
5468 CmdArgs.push_back("-unbundle");
5470 // All the inputs are encoded as commands.
5471 C.addCommand(llvm::make_unique<Command>(
5473 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),