1 //===--- LLVM.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 #include "Arch/AArch64.h"
13 #include "Arch/Mips.h"
15 #include "Arch/RISCV.h"
16 #include "Arch/Sparc.h"
17 #include "Arch/SystemZ.h"
20 #include "CommonArgs.h"
22 #include "InputInfo.h"
24 #include "clang/Basic/CharInfo.h"
25 #include "clang/Basic/LangOptions.h"
26 #include "clang/Basic/ObjCRuntime.h"
27 #include "clang/Basic/Version.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/Config/llvm-config.h"
34 #include "llvm/Option/ArgList.h"
35 #include "llvm/Support/CodeGen.h"
36 #include "llvm/Support/Compression.h"
37 #include "llvm/Support/FileSystem.h"
38 #include "llvm/Support/Path.h"
39 #include "llvm/Support/Process.h"
40 #include "llvm/Support/TargetParser.h"
41 #include "llvm/Support/YAMLParser.h"
44 #include <unistd.h> // For getuid().
47 using namespace clang::driver;
48 using namespace clang::driver::tools;
49 using namespace clang;
50 using namespace llvm::opt;
52 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
54 Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
55 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
56 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
57 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
58 << A->getBaseArg().getAsString(Args)
59 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
64 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
65 // In gcc, only ARM checks this, but it seems reasonable to check universally.
66 if (Args.hasArg(options::OPT_static))
68 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
69 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
73 // Add backslashes to escape spaces and other backslashes.
74 // This is used for the space-separated argument list specified with
75 // the -dwarf-debug-flags option.
76 static void EscapeSpacesAndBackslashes(const char *Arg,
77 SmallVectorImpl<char> &Res) {
91 // Quote target names for inclusion in GNU Make dependency files.
92 // Only the characters '$', '#', ' ', '\t' are quoted.
93 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
94 for (unsigned i = 0, e = Target.size(); i != e; ++i) {
98 // Escape the preceding backslashes
99 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
102 // Escape the space/tab
115 Res.push_back(Target[i]);
119 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
120 /// offloading tool chain that is associated with the current action \a JA.
122 forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
123 const ToolChain &RegularToolChain,
124 llvm::function_ref<void(const ToolChain &)> Work) {
125 // Apply Work on the current/regular tool chain.
126 Work(RegularToolChain);
128 // Apply Work on all the offloading tool chains associated with the current
130 if (JA.isHostOffloading(Action::OFK_Cuda))
131 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
132 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
133 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
134 else if (JA.isHostOffloading(Action::OFK_HIP))
135 Work(*C.getSingleOffloadToolChain<Action::OFK_HIP>());
136 else if (JA.isDeviceOffloading(Action::OFK_HIP))
137 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
139 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
140 auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
141 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
143 } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
144 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
147 // TODO: Add support for other offloading programming models here.
151 /// This is a helper function for validating the optional refinement step
152 /// parameter in reciprocal argument strings. Return false if there is an error
153 /// parsing the refinement step. Otherwise, return true and set the Position
154 /// of the refinement step in the input string.
155 static bool getRefinementStep(StringRef In, const Driver &D,
156 const Arg &A, size_t &Position) {
157 const char RefinementStepToken = ':';
158 Position = In.find(RefinementStepToken);
159 if (Position != StringRef::npos) {
160 StringRef Option = A.getOption().getName();
161 StringRef RefStep = In.substr(Position + 1);
162 // Allow exactly one numeric character for the additional refinement
163 // step parameter. This is reasonable for all currently-supported
164 // operations and architectures because we would expect that a larger value
165 // of refinement steps would cause the estimate "optimization" to
166 // under-perform the native operation. Also, if the estimate does not
167 // converge quickly, it probably will not ever converge, so further
168 // refinement steps will not produce a better answer.
169 if (RefStep.size() != 1) {
170 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
173 char RefStepChar = RefStep[0];
174 if (RefStepChar < '0' || RefStepChar > '9') {
175 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
182 /// The -mrecip flag requires processing of many optional parameters.
183 static void ParseMRecip(const Driver &D, const ArgList &Args,
184 ArgStringList &OutStrings) {
185 StringRef DisabledPrefixIn = "!";
186 StringRef DisabledPrefixOut = "!";
187 StringRef EnabledPrefixOut = "";
188 StringRef Out = "-mrecip=";
190 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
194 unsigned NumOptions = A->getNumValues();
195 if (NumOptions == 0) {
196 // No option is the same as "all".
197 OutStrings.push_back(Args.MakeArgString(Out + "all"));
201 // Pass through "all", "none", or "default" with an optional refinement step.
202 if (NumOptions == 1) {
203 StringRef Val = A->getValue(0);
205 if (!getRefinementStep(Val, D, *A, RefStepLoc))
207 StringRef ValBase = Val.slice(0, RefStepLoc);
208 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
209 OutStrings.push_back(Args.MakeArgString(Out + Val));
214 // Each reciprocal type may be enabled or disabled individually.
215 // Check each input value for validity, concatenate them all back together,
218 llvm::StringMap<bool> OptionStrings;
219 OptionStrings.insert(std::make_pair("divd", false));
220 OptionStrings.insert(std::make_pair("divf", false));
221 OptionStrings.insert(std::make_pair("vec-divd", false));
222 OptionStrings.insert(std::make_pair("vec-divf", false));
223 OptionStrings.insert(std::make_pair("sqrtd", false));
224 OptionStrings.insert(std::make_pair("sqrtf", false));
225 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
226 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
228 for (unsigned i = 0; i != NumOptions; ++i) {
229 StringRef Val = A->getValue(i);
231 bool IsDisabled = Val.startswith(DisabledPrefixIn);
232 // Ignore the disablement token for string matching.
237 if (!getRefinementStep(Val, D, *A, RefStep))
240 StringRef ValBase = Val.slice(0, RefStep);
241 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
242 if (OptionIter == OptionStrings.end()) {
243 // Try again specifying float suffix.
244 OptionIter = OptionStrings.find(ValBase.str() + 'f');
245 if (OptionIter == OptionStrings.end()) {
246 // The input name did not match any known option string.
247 D.Diag(diag::err_drv_unknown_argument) << Val;
250 // The option was specified without a float or double suffix.
251 // Make sure that the double entry was not already specified.
252 // The float entry will be checked below.
253 if (OptionStrings[ValBase.str() + 'd']) {
254 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
259 if (OptionIter->second == true) {
260 // Duplicate option specified.
261 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
265 // Mark the matched option as found. Do not allow duplicate specifiers.
266 OptionIter->second = true;
268 // If the precision was not specified, also mark the double entry as found.
269 if (ValBase.back() != 'f' && ValBase.back() != 'd')
270 OptionStrings[ValBase.str() + 'd'] = true;
272 // Build the output string.
273 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
274 Out = Args.MakeArgString(Out + Prefix + Val);
275 if (i != NumOptions - 1)
276 Out = Args.MakeArgString(Out + ",");
279 OutStrings.push_back(Args.MakeArgString(Out));
282 /// The -mprefer-vector-width option accepts either a positive integer
283 /// or the string "none".
284 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
285 ArgStringList &CmdArgs) {
286 Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
290 StringRef Value = A->getValue();
291 if (Value == "none") {
292 CmdArgs.push_back("-mprefer-vector-width=none");
295 if (Value.getAsInteger(10, Width)) {
296 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
299 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
303 static void getWebAssemblyTargetFeatures(const ArgList &Args,
304 std::vector<StringRef> &Features) {
305 handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
308 static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
309 const ArgList &Args, ArgStringList &CmdArgs,
311 const Driver &D = TC.getDriver();
312 std::vector<StringRef> Features;
313 switch (Triple.getArch()) {
316 case llvm::Triple::mips:
317 case llvm::Triple::mipsel:
318 case llvm::Triple::mips64:
319 case llvm::Triple::mips64el:
320 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
323 case llvm::Triple::arm:
324 case llvm::Triple::armeb:
325 case llvm::Triple::thumb:
326 case llvm::Triple::thumbeb:
327 arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
330 case llvm::Triple::ppc:
331 case llvm::Triple::ppc64:
332 case llvm::Triple::ppc64le:
333 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
335 case llvm::Triple::riscv32:
336 case llvm::Triple::riscv64:
337 riscv::getRISCVTargetFeatures(D, Args, Features);
339 case llvm::Triple::systemz:
340 systemz::getSystemZTargetFeatures(Args, Features);
342 case llvm::Triple::aarch64:
343 case llvm::Triple::aarch64_be:
344 aarch64::getAArch64TargetFeatures(D, Args, Features);
346 case llvm::Triple::x86:
347 case llvm::Triple::x86_64:
348 x86::getX86TargetFeatures(D, Triple, Args, Features);
350 case llvm::Triple::hexagon:
351 hexagon::getHexagonTargetFeatures(D, Args, Features);
353 case llvm::Triple::wasm32:
354 case llvm::Triple::wasm64:
355 getWebAssemblyTargetFeatures(Args, Features);
357 case llvm::Triple::sparc:
358 case llvm::Triple::sparcel:
359 case llvm::Triple::sparcv9:
360 sparc::getSparcTargetFeatures(D, Args, Features);
362 case llvm::Triple::r600:
363 case llvm::Triple::amdgcn:
364 amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
368 // Find the last of each feature.
369 llvm::StringMap<unsigned> LastOpt;
370 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
371 StringRef Name = Features[I];
372 assert(Name[0] == '-' || Name[0] == '+');
373 LastOpt[Name.drop_front(1)] = I;
376 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
377 // If this feature was overridden, ignore it.
378 StringRef Name = Features[I];
379 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
380 assert(LastI != LastOpt.end());
381 unsigned Last = LastI->second;
385 CmdArgs.push_back("-target-feature");
386 CmdArgs.push_back(Name.data());
391 shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
392 const llvm::Triple &Triple) {
393 // We use the zero-cost exception tables for Objective-C if the non-fragile
394 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
396 if (runtime.isNonFragile())
399 if (!Triple.isMacOSX())
402 return (!Triple.isMacOSXVersionLT(10, 5) &&
403 (Triple.getArch() == llvm::Triple::x86_64 ||
404 Triple.getArch() == llvm::Triple::arm));
407 /// Adds exception related arguments to the driver command arguments. There's a
408 /// master flag, -fexceptions and also language specific flags to enable/disable
409 /// C++ and Objective-C exceptions. This makes it possible to for example
410 /// disable C++ exceptions but enable Objective-C exceptions.
411 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
412 const ToolChain &TC, bool KernelOrKext,
413 const ObjCRuntime &objcRuntime,
414 ArgStringList &CmdArgs) {
415 const llvm::Triple &Triple = TC.getTriple();
418 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
419 // arguments now to avoid warnings about unused arguments.
420 Args.ClaimAllArgs(options::OPT_fexceptions);
421 Args.ClaimAllArgs(options::OPT_fno_exceptions);
422 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
423 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
424 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
425 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
429 // See if the user explicitly enabled exceptions.
430 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
433 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
434 // is not necessarily sensible, but follows GCC.
435 if (types::isObjC(InputType) &&
436 Args.hasFlag(options::OPT_fobjc_exceptions,
437 options::OPT_fno_objc_exceptions, true)) {
438 CmdArgs.push_back("-fobjc-exceptions");
440 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
443 if (types::isCXX(InputType)) {
444 // Disable C++ EH by default on XCore and PS4.
445 bool CXXExceptionsEnabled =
446 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
447 Arg *ExceptionArg = Args.getLastArg(
448 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
449 options::OPT_fexceptions, options::OPT_fno_exceptions);
451 CXXExceptionsEnabled =
452 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
453 ExceptionArg->getOption().matches(options::OPT_fexceptions);
455 if (CXXExceptionsEnabled) {
456 CmdArgs.push_back("-fcxx-exceptions");
463 CmdArgs.push_back("-fexceptions");
466 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
468 if (TC.getTriple().isOSDarwin()) {
469 // The native darwin assembler doesn't support the linker_option directives,
470 // so we disable them if we think the .s file will be passed to it.
471 Default = TC.useIntegratedAs();
473 return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
477 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
478 const ToolChain &TC) {
479 bool UseDwarfDirectory =
480 Args.hasFlag(options::OPT_fdwarf_directory_asm,
481 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
482 return !UseDwarfDirectory;
485 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
486 // to the corresponding DebugInfoKind.
487 static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
488 assert(A.getOption().matches(options::OPT_gN_Group) &&
489 "Not a -g option that specifies a debug-info level");
490 if (A.getOption().matches(options::OPT_g0) ||
491 A.getOption().matches(options::OPT_ggdb0))
492 return codegenoptions::NoDebugInfo;
493 if (A.getOption().matches(options::OPT_gline_tables_only) ||
494 A.getOption().matches(options::OPT_ggdb1))
495 return codegenoptions::DebugLineTablesOnly;
496 return codegenoptions::LimitedDebugInfo;
499 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
500 switch (Triple.getArch()){
503 case llvm::Triple::arm:
504 case llvm::Triple::thumb:
505 // ARM Darwin targets require a frame pointer to be always present to aid
506 // offline debugging via backtraces.
507 return Triple.isOSDarwin();
511 static bool useFramePointerForTargetByDefault(const ArgList &Args,
512 const llvm::Triple &Triple) {
513 switch (Triple.getArch()) {
514 case llvm::Triple::xcore:
515 case llvm::Triple::wasm32:
516 case llvm::Triple::wasm64:
517 // XCore never wants frame pointers, regardless of OS.
518 // WebAssembly never wants frame pointers.
520 case llvm::Triple::riscv32:
521 case llvm::Triple::riscv64:
522 return !areOptimizationsEnabled(Args);
527 if (Triple.getOS() == llvm::Triple::NetBSD) {
528 return !areOptimizationsEnabled(Args);
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 /// Add a CC1 and CC1AS option to specify the debug file path prefix map.
608 static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
609 for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
610 StringRef Map = A->getValue();
611 if (Map.find('=') == StringRef::npos)
612 D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
614 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
619 /// Vectorize at all optimization levels greater than 1 except for -Oz.
620 /// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
621 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
622 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
623 if (A->getOption().matches(options::OPT_O4) ||
624 A->getOption().matches(options::OPT_Ofast))
627 if (A->getOption().matches(options::OPT_O0))
630 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
633 StringRef S(A->getValue());
637 // Don't vectorize -Oz, unless it's the slp vectorizer.
641 unsigned OptLevel = 0;
642 if (S.getAsInteger(10, OptLevel))
651 /// Add -x lang to \p CmdArgs for \p Input.
652 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
653 ArgStringList &CmdArgs) {
654 // When using -verify-pch, we don't want to provide the type
655 // 'precompiled-header' if it was inferred from the file extension
656 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
659 CmdArgs.push_back("-x");
660 if (Args.hasArg(options::OPT_rewrite_objc))
661 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
663 // Map the driver type to the frontend type. This is mostly an identity
664 // mapping, except that the distinction between module interface units
665 // and other source files does not exist at the frontend layer.
666 const char *ClangType;
667 switch (Input.getType()) {
668 case types::TY_CXXModule:
671 case types::TY_PP_CXXModule:
672 ClangType = "c++-cpp-output";
675 ClangType = types::getTypeName(Input.getType());
678 CmdArgs.push_back(ClangType);
682 static void appendUserToPath(SmallVectorImpl<char> &Result) {
684 const char *Username = getenv("LOGNAME");
686 const char *Username = getenv("USERNAME");
689 // Validate that LoginName can be used in a path, and get its length.
691 for (const char *P = Username; *P; ++P, ++Len) {
692 if (!clang::isAlphanumeric(*P) && *P != '_') {
698 if (Username && Len > 0) {
699 Result.append(Username, Username + Len);
704 // Fallback to user id.
706 std::string UID = llvm::utostr(getuid());
708 // FIXME: Windows seems to have an 'SID' that might work.
709 std::string UID = "9999";
711 Result.append(UID.begin(), UID.end());
714 static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
715 const InputInfo &Output, const ArgList &Args,
716 ArgStringList &CmdArgs) {
718 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
719 options::OPT_fprofile_generate_EQ,
720 options::OPT_fno_profile_generate);
721 if (PGOGenerateArg &&
722 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
723 PGOGenerateArg = nullptr;
725 auto *ProfileGenerateArg = Args.getLastArg(
726 options::OPT_fprofile_instr_generate,
727 options::OPT_fprofile_instr_generate_EQ,
728 options::OPT_fno_profile_instr_generate);
729 if (ProfileGenerateArg &&
730 ProfileGenerateArg->getOption().matches(
731 options::OPT_fno_profile_instr_generate))
732 ProfileGenerateArg = nullptr;
734 if (PGOGenerateArg && ProfileGenerateArg)
735 D.Diag(diag::err_drv_argument_not_allowed_with)
736 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
738 auto *ProfileUseArg = getLastProfileUseArg(Args);
740 if (PGOGenerateArg && ProfileUseArg)
741 D.Diag(diag::err_drv_argument_not_allowed_with)
742 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
744 if (ProfileGenerateArg && ProfileUseArg)
745 D.Diag(diag::err_drv_argument_not_allowed_with)
746 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
748 if (ProfileGenerateArg) {
749 if (ProfileGenerateArg->getOption().matches(
750 options::OPT_fprofile_instr_generate_EQ))
751 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
752 ProfileGenerateArg->getValue()));
753 // The default is to use Clang Instrumentation.
754 CmdArgs.push_back("-fprofile-instrument=clang");
757 if (PGOGenerateArg) {
758 CmdArgs.push_back("-fprofile-instrument=llvm");
759 if (PGOGenerateArg->getOption().matches(
760 options::OPT_fprofile_generate_EQ)) {
761 SmallString<128> Path(PGOGenerateArg->getValue());
762 llvm::sys::path::append(Path, "default_%m.profraw");
764 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
769 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
770 CmdArgs.push_back(Args.MakeArgString(
771 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
772 else if ((ProfileUseArg->getOption().matches(
773 options::OPT_fprofile_use_EQ) ||
774 ProfileUseArg->getOption().matches(
775 options::OPT_fprofile_instr_use))) {
776 SmallString<128> Path(
777 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
778 if (Path.empty() || llvm::sys::fs::is_directory(Path))
779 llvm::sys::path::append(Path, "default.profdata");
781 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
785 if (Args.hasArg(options::OPT_ftest_coverage) ||
786 Args.hasArg(options::OPT_coverage))
787 CmdArgs.push_back("-femit-coverage-notes");
788 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
790 Args.hasArg(options::OPT_coverage))
791 CmdArgs.push_back("-femit-coverage-data");
793 if (Args.hasFlag(options::OPT_fcoverage_mapping,
794 options::OPT_fno_coverage_mapping, false)) {
795 if (!ProfileGenerateArg)
796 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
797 << "-fcoverage-mapping"
798 << "-fprofile-instr-generate";
800 CmdArgs.push_back("-fcoverage-mapping");
803 if (C.getArgs().hasArg(options::OPT_c) ||
804 C.getArgs().hasArg(options::OPT_S)) {
805 if (Output.isFilename()) {
806 CmdArgs.push_back("-coverage-notes-file");
807 SmallString<128> OutputFilename;
808 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
809 OutputFilename = FinalOutput->getValue();
811 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
812 SmallString<128> CoverageFilename = OutputFilename;
813 if (llvm::sys::path::is_relative(CoverageFilename)) {
814 SmallString<128> Pwd;
815 if (!llvm::sys::fs::current_path(Pwd)) {
816 llvm::sys::path::append(Pwd, CoverageFilename);
817 CoverageFilename.swap(Pwd);
820 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
821 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
823 // Leave -fprofile-dir= an unused argument unless .gcda emission is
824 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
825 // the flag used. There is no -fno-profile-dir, so the user has no
826 // targeted way to suppress the warning.
827 if (Args.hasArg(options::OPT_fprofile_arcs) ||
828 Args.hasArg(options::OPT_coverage)) {
829 CmdArgs.push_back("-coverage-data-file");
830 if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
831 CoverageFilename = FProfileDir->getValue();
832 llvm::sys::path::append(CoverageFilename, OutputFilename);
834 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
835 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
841 /// Check whether the given input tree contains any compilation actions.
842 static bool ContainsCompileAction(const Action *A) {
843 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
846 for (const auto &AI : A->inputs())
847 if (ContainsCompileAction(AI))
853 /// Check if -relax-all should be passed to the internal assembler.
854 /// This is done by default when compiling non-assembler source with -O0.
855 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
856 bool RelaxDefault = true;
858 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
859 RelaxDefault = A->getOption().matches(options::OPT_O0);
862 RelaxDefault = false;
863 for (const auto &Act : C.getActions()) {
864 if (ContainsCompileAction(Act)) {
871 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
875 // Extract the integer N from a string spelled "-dwarf-N", returning 0
876 // on mismatch. The StringRef input (rather than an Arg) allows
877 // for use by the "-Xassembler" option parser.
878 static unsigned DwarfVersionNum(StringRef ArgValue) {
879 return llvm::StringSwitch<unsigned>(ArgValue)
880 .Case("-gdwarf-2", 2)
881 .Case("-gdwarf-3", 3)
882 .Case("-gdwarf-4", 4)
883 .Case("-gdwarf-5", 5)
887 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
888 codegenoptions::DebugInfoKind DebugInfoKind,
889 unsigned DwarfVersion,
890 llvm::DebuggerKind DebuggerTuning) {
891 switch (DebugInfoKind) {
892 case codegenoptions::DebugLineTablesOnly:
893 CmdArgs.push_back("-debug-info-kind=line-tables-only");
895 case codegenoptions::LimitedDebugInfo:
896 CmdArgs.push_back("-debug-info-kind=limited");
898 case codegenoptions::FullDebugInfo:
899 CmdArgs.push_back("-debug-info-kind=standalone");
904 if (DwarfVersion > 0)
906 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
907 switch (DebuggerTuning) {
908 case llvm::DebuggerKind::GDB:
909 CmdArgs.push_back("-debugger-tuning=gdb");
911 case llvm::DebuggerKind::LLDB:
912 CmdArgs.push_back("-debugger-tuning=lldb");
914 case llvm::DebuggerKind::SCE:
915 CmdArgs.push_back("-debugger-tuning=sce");
922 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
923 ArgStringList &CmdArgs,
925 const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
929 if (A->getOption().getID() == options::OPT_gz) {
930 if (llvm::zlib::isAvailable())
931 CmdArgs.push_back("-compress-debug-sections");
933 D.Diag(diag::warn_debug_compression_unavailable);
937 StringRef Value = A->getValue();
938 if (Value == "none") {
939 CmdArgs.push_back("-compress-debug-sections=none");
940 } else if (Value == "zlib" || Value == "zlib-gnu") {
941 if (llvm::zlib::isAvailable()) {
943 Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
945 D.Diag(diag::warn_debug_compression_unavailable);
948 D.Diag(diag::err_drv_unsupported_option_argument)
949 << A->getOption().getName() << Value;
953 static const char *RelocationModelName(llvm::Reloc::Model Model) {
955 case llvm::Reloc::Static:
957 case llvm::Reloc::PIC_:
959 case llvm::Reloc::DynamicNoPIC:
960 return "dynamic-no-pic";
961 case llvm::Reloc::ROPI:
963 case llvm::Reloc::RWPI:
965 case llvm::Reloc::ROPI_RWPI:
968 llvm_unreachable("Unknown Reloc::Model kind");
971 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
972 const Driver &D, const ArgList &Args,
973 ArgStringList &CmdArgs,
974 const InputInfo &Output,
975 const InputInfoList &Inputs) const {
977 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
979 CheckPreprocessingOptions(D, Args);
981 Args.AddLastArg(CmdArgs, options::OPT_C);
982 Args.AddLastArg(CmdArgs, options::OPT_CC);
984 // Handle dependency file generation.
985 if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
986 (A = Args.getLastArg(options::OPT_MD)) ||
987 (A = Args.getLastArg(options::OPT_MMD))) {
988 // Determine the output location.
990 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
991 DepFile = MF->getValue();
992 C.addFailureResultFile(DepFile, &JA);
993 } else if (Output.getType() == types::TY_Dependencies) {
994 DepFile = Output.getFilename();
995 } else if (A->getOption().matches(options::OPT_M) ||
996 A->getOption().matches(options::OPT_MM)) {
999 DepFile = getDependencyFileName(Args, Inputs);
1000 C.addFailureResultFile(DepFile, &JA);
1002 CmdArgs.push_back("-dependency-file");
1003 CmdArgs.push_back(DepFile);
1005 // Add a default target if one wasn't specified.
1006 if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
1007 const char *DepTarget;
1009 // If user provided -o, that is the dependency target, except
1010 // when we are only generating a dependency file.
1011 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1012 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1013 DepTarget = OutputOpt->getValue();
1015 // Otherwise derive from the base input.
1017 // FIXME: This should use the computed output file location.
1018 SmallString<128> P(Inputs[0].getBaseInput());
1019 llvm::sys::path::replace_extension(P, "o");
1020 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1023 if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1024 CmdArgs.push_back("-w");
1026 CmdArgs.push_back("-MT");
1027 SmallString<128> Quoted;
1028 QuoteTarget(DepTarget, Quoted);
1029 CmdArgs.push_back(Args.MakeArgString(Quoted));
1032 if (A->getOption().matches(options::OPT_M) ||
1033 A->getOption().matches(options::OPT_MD))
1034 CmdArgs.push_back("-sys-header-deps");
1035 if ((isa<PrecompileJobAction>(JA) &&
1036 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1037 Args.hasArg(options::OPT_fmodule_file_deps))
1038 CmdArgs.push_back("-module-file-deps");
1041 if (Args.hasArg(options::OPT_MG)) {
1042 if (!A || A->getOption().matches(options::OPT_MD) ||
1043 A->getOption().matches(options::OPT_MMD))
1044 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1045 CmdArgs.push_back("-MG");
1048 Args.AddLastArg(CmdArgs, options::OPT_MP);
1049 Args.AddLastArg(CmdArgs, options::OPT_MV);
1051 // Convert all -MQ <target> args to -MT <quoted target>
1052 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1055 if (A->getOption().matches(options::OPT_MQ)) {
1056 CmdArgs.push_back("-MT");
1057 SmallString<128> Quoted;
1058 QuoteTarget(A->getValue(), Quoted);
1059 CmdArgs.push_back(Args.MakeArgString(Quoted));
1061 // -MT flag - no change
1063 A->render(Args, CmdArgs);
1067 // Add offload include arguments specific for CUDA. This must happen before
1068 // we -I or -include anything else, because we must pick up the CUDA headers
1069 // from the particular CUDA installation, rather than from e.g.
1070 // /usr/local/include.
1071 if (JA.isOffloading(Action::OFK_Cuda))
1072 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1074 // Add -i* options, and automatically translate to
1075 // -include-pch/-include-pth for transparent PCH support. It's
1076 // wonky, but we include looking for .gch so we can support seamless
1077 // replacement into a build system already set up to be generating
1080 if (getToolChain().getDriver().IsCLMode()) {
1081 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1082 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1083 if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1084 JA.getKind() <= Action::AssembleJobClass) {
1085 CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1087 if (YcArg || YuArg) {
1088 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1089 if (!isa<PrecompileJobAction>(JA)) {
1090 CmdArgs.push_back("-include-pch");
1091 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(C, ThroughHeader)));
1094 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1098 bool RenderedImplicitInclude = false;
1099 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1100 if (A->getOption().matches(options::OPT_include)) {
1101 // Handling of gcc-style gch precompiled headers.
1102 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1103 RenderedImplicitInclude = true;
1105 // Use PCH if the user requested it.
1106 bool UsePCH = D.CCCUsePCH;
1108 bool FoundPTH = false;
1109 bool FoundPCH = false;
1110 SmallString<128> P(A->getValue());
1111 // We want the files to have a name like foo.h.pch. Add a dummy extension
1112 // so that replace_extension does the right thing.
1115 llvm::sys::path::replace_extension(P, "pch");
1116 if (llvm::sys::fs::exists(P))
1121 llvm::sys::path::replace_extension(P, "pth");
1122 if (llvm::sys::fs::exists(P))
1126 if (!FoundPCH && !FoundPTH) {
1127 llvm::sys::path::replace_extension(P, "gch");
1128 if (llvm::sys::fs::exists(P)) {
1134 if (FoundPCH || FoundPTH) {
1135 if (IsFirstImplicitInclude) {
1138 CmdArgs.push_back("-include-pch");
1140 CmdArgs.push_back("-include-pth");
1141 CmdArgs.push_back(Args.MakeArgString(P));
1144 // Ignore the PCH if not first on command line and emit warning.
1145 D.Diag(diag::warn_drv_pch_not_first_include) << P
1146 << A->getAsString(Args);
1149 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1150 // Handling of paths which must come late. These entries are handled by
1151 // the toolchain itself after the resource dir is inserted in the right
1153 // Do not claim the argument so that the use of the argument does not
1154 // silently go unnoticed on toolchains which do not honour the option.
1158 // Not translated, render as usual.
1160 A->render(Args, CmdArgs);
1163 Args.AddAllArgs(CmdArgs,
1164 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1165 options::OPT_F, options::OPT_index_header_map});
1167 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1169 // FIXME: There is a very unfortunate problem here, some troubled
1170 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1171 // really support that we would have to parse and then translate
1172 // those options. :(
1173 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1174 options::OPT_Xpreprocessor);
1176 // -I- is a deprecated GCC feature, reject it.
1177 if (Arg *A = Args.getLastArg(options::OPT_I_))
1178 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1180 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1181 // -isysroot to the CC1 invocation.
1182 StringRef sysroot = C.getSysRoot();
1183 if (sysroot != "") {
1184 if (!Args.hasArg(options::OPT_isysroot)) {
1185 CmdArgs.push_back("-isysroot");
1186 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1190 // Parse additional include paths from environment variables.
1191 // FIXME: We should probably sink the logic for handling these from the
1192 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1193 // CPATH - included following the user specified includes (but prior to
1194 // builtin and standard includes).
1195 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1196 // C_INCLUDE_PATH - system includes enabled when compiling C.
1197 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1198 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1199 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1200 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1201 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1202 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1203 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1205 // While adding the include arguments, we also attempt to retrieve the
1206 // arguments of related offloading toolchains or arguments that are specific
1207 // of an offloading programming model.
1209 // Add C++ include arguments, if needed.
1210 if (types::isCXX(Inputs[0].getType()))
1211 forAllAssociatedToolChains(C, JA, getToolChain(),
1212 [&Args, &CmdArgs](const ToolChain &TC) {
1213 TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1216 // Add system include arguments for all targets but IAMCU.
1218 forAllAssociatedToolChains(C, JA, getToolChain(),
1219 [&Args, &CmdArgs](const ToolChain &TC) {
1220 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1223 // For IAMCU add special include arguments.
1224 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1228 // FIXME: Move to target hook.
1229 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1230 switch (Triple.getArch()) {
1234 case llvm::Triple::aarch64:
1235 case llvm::Triple::aarch64_be:
1236 case llvm::Triple::arm:
1237 case llvm::Triple::armeb:
1238 case llvm::Triple::thumb:
1239 case llvm::Triple::thumbeb:
1240 if (Triple.isOSDarwin() || Triple.isOSWindows())
1244 case llvm::Triple::ppc:
1245 case llvm::Triple::ppc64:
1246 if (Triple.isOSDarwin())
1250 case llvm::Triple::hexagon:
1251 case llvm::Triple::ppc64le:
1252 case llvm::Triple::riscv32:
1253 case llvm::Triple::riscv64:
1254 case llvm::Triple::systemz:
1255 case llvm::Triple::xcore:
1260 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1261 switch (Triple.getArch()) {
1263 if (Triple.isOSFuchsia())
1267 case llvm::Triple::xcore:
1268 case llvm::Triple::wasm32:
1269 case llvm::Triple::wasm64:
1274 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1275 ArgStringList &CmdArgs, bool KernelOrKext) const {
1276 // Select the ABI to use.
1277 // FIXME: Support -meabi.
1278 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1279 const char *ABIName = nullptr;
1280 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1281 ABIName = A->getValue();
1283 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1284 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1287 CmdArgs.push_back("-target-abi");
1288 CmdArgs.push_back(ABIName);
1290 // Determine floating point ABI from the options & target defaults.
1291 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1292 if (ABI == arm::FloatABI::Soft) {
1293 // Floating point operations and argument passing are soft.
1294 // FIXME: This changes CPP defines, we need -target-soft-float.
1295 CmdArgs.push_back("-msoft-float");
1296 CmdArgs.push_back("-mfloat-abi");
1297 CmdArgs.push_back("soft");
1298 } else if (ABI == arm::FloatABI::SoftFP) {
1299 // Floating point operations are hard, but argument passing is soft.
1300 CmdArgs.push_back("-mfloat-abi");
1301 CmdArgs.push_back("soft");
1303 // Floating point operations and argument passing are hard.
1304 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1305 CmdArgs.push_back("-mfloat-abi");
1306 CmdArgs.push_back("hard");
1309 // Forward the -mglobal-merge option for explicit control over the pass.
1310 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1311 options::OPT_mno_global_merge)) {
1312 CmdArgs.push_back("-mllvm");
1313 if (A->getOption().matches(options::OPT_mno_global_merge))
1314 CmdArgs.push_back("-arm-global-merge=false");
1316 CmdArgs.push_back("-arm-global-merge=true");
1319 if (!Args.hasFlag(options::OPT_mimplicit_float,
1320 options::OPT_mno_implicit_float, true))
1321 CmdArgs.push_back("-no-implicit-float");
1324 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1325 const ArgList &Args, bool KernelOrKext,
1326 ArgStringList &CmdArgs) const {
1327 const ToolChain &TC = getToolChain();
1329 // Add the target features
1330 getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1332 // Add target specific flags.
1333 switch (TC.getArch()) {
1337 case llvm::Triple::arm:
1338 case llvm::Triple::armeb:
1339 case llvm::Triple::thumb:
1340 case llvm::Triple::thumbeb:
1341 // Use the effective triple, which takes into account the deployment target.
1342 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1343 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1346 case llvm::Triple::aarch64:
1347 case llvm::Triple::aarch64_be:
1348 AddAArch64TargetArgs(Args, CmdArgs);
1349 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1352 case llvm::Triple::mips:
1353 case llvm::Triple::mipsel:
1354 case llvm::Triple::mips64:
1355 case llvm::Triple::mips64el:
1356 AddMIPSTargetArgs(Args, CmdArgs);
1359 case llvm::Triple::ppc:
1360 case llvm::Triple::ppc64:
1361 case llvm::Triple::ppc64le:
1362 AddPPCTargetArgs(Args, CmdArgs);
1365 case llvm::Triple::riscv32:
1366 case llvm::Triple::riscv64:
1367 AddRISCVTargetArgs(Args, CmdArgs);
1370 case llvm::Triple::sparc:
1371 case llvm::Triple::sparcel:
1372 case llvm::Triple::sparcv9:
1373 AddSparcTargetArgs(Args, CmdArgs);
1376 case llvm::Triple::systemz:
1377 AddSystemZTargetArgs(Args, CmdArgs);
1380 case llvm::Triple::x86:
1381 case llvm::Triple::x86_64:
1382 AddX86TargetArgs(Args, CmdArgs);
1385 case llvm::Triple::lanai:
1386 AddLanaiTargetArgs(Args, CmdArgs);
1389 case llvm::Triple::hexagon:
1390 AddHexagonTargetArgs(Args, CmdArgs);
1393 case llvm::Triple::wasm32:
1394 case llvm::Triple::wasm64:
1395 AddWebAssemblyTargetArgs(Args, CmdArgs);
1400 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1401 ArgStringList &CmdArgs) const {
1402 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1404 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1405 Args.hasArg(options::OPT_mkernel) ||
1406 Args.hasArg(options::OPT_fapple_kext))
1407 CmdArgs.push_back("-disable-red-zone");
1409 if (!Args.hasFlag(options::OPT_mimplicit_float,
1410 options::OPT_mno_implicit_float, true))
1411 CmdArgs.push_back("-no-implicit-float");
1413 const char *ABIName = nullptr;
1414 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1415 ABIName = A->getValue();
1416 else if (Triple.isOSDarwin())
1417 ABIName = "darwinpcs";
1421 CmdArgs.push_back("-target-abi");
1422 CmdArgs.push_back(ABIName);
1424 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1425 options::OPT_mno_fix_cortex_a53_835769)) {
1426 CmdArgs.push_back("-mllvm");
1427 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1428 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1430 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1431 } else if (Triple.isAndroid()) {
1432 // Enabled A53 errata (835769) workaround by default on android
1433 CmdArgs.push_back("-mllvm");
1434 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1437 // Forward the -mglobal-merge option for explicit control over the pass.
1438 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1439 options::OPT_mno_global_merge)) {
1440 CmdArgs.push_back("-mllvm");
1441 if (A->getOption().matches(options::OPT_mno_global_merge))
1442 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1444 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1448 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1449 ArgStringList &CmdArgs) const {
1450 const Driver &D = getToolChain().getDriver();
1453 const llvm::Triple &Triple = getToolChain().getTriple();
1454 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1456 CmdArgs.push_back("-target-abi");
1457 CmdArgs.push_back(ABIName.data());
1459 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1460 if (ABI == mips::FloatABI::Soft) {
1461 // Floating point operations and argument passing are soft.
1462 CmdArgs.push_back("-msoft-float");
1463 CmdArgs.push_back("-mfloat-abi");
1464 CmdArgs.push_back("soft");
1466 // Floating point operations and argument passing are hard.
1467 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1468 CmdArgs.push_back("-mfloat-abi");
1469 CmdArgs.push_back("hard");
1472 if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1473 if (A->getOption().matches(options::OPT_mxgot)) {
1474 CmdArgs.push_back("-mllvm");
1475 CmdArgs.push_back("-mxgot");
1479 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1480 options::OPT_mno_ldc1_sdc1)) {
1481 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1482 CmdArgs.push_back("-mllvm");
1483 CmdArgs.push_back("-mno-ldc1-sdc1");
1487 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1488 options::OPT_mno_check_zero_division)) {
1489 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1490 CmdArgs.push_back("-mllvm");
1491 CmdArgs.push_back("-mno-check-zero-division");
1495 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1496 StringRef v = A->getValue();
1497 CmdArgs.push_back("-mllvm");
1498 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1502 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1504 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1506 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1507 // -mgpopt is the default for static, -fno-pic environments but these two
1508 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1509 // the only case where -mllvm -mgpopt is passed.
1510 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1511 // passed explicitly when compiling something with -mabicalls
1512 // (implictly) in affect. Currently the warning is in the backend.
1514 // When the ABI in use is N64, we also need to determine the PIC mode that
1515 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1517 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1519 llvm::Reloc::Model RelocationModel;
1522 std::tie(RelocationModel, PICLevel, IsPIE) =
1523 ParsePICArgs(getToolChain(), Args);
1525 NoABICalls = NoABICalls ||
1526 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1528 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1529 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1530 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1531 CmdArgs.push_back("-mllvm");
1532 CmdArgs.push_back("-mgpopt");
1534 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1535 options::OPT_mno_local_sdata);
1536 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1537 options::OPT_mno_extern_sdata);
1538 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1539 options::OPT_mno_embedded_data);
1541 CmdArgs.push_back("-mllvm");
1542 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1543 CmdArgs.push_back("-mlocal-sdata=1");
1545 CmdArgs.push_back("-mlocal-sdata=0");
1547 LocalSData->claim();
1551 CmdArgs.push_back("-mllvm");
1552 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1553 CmdArgs.push_back("-mextern-sdata=1");
1555 CmdArgs.push_back("-mextern-sdata=0");
1557 ExternSData->claim();
1561 CmdArgs.push_back("-mllvm");
1562 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1563 CmdArgs.push_back("-membedded-data=1");
1565 CmdArgs.push_back("-membedded-data=0");
1567 EmbeddedData->claim();
1570 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1571 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1576 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1577 StringRef Val = StringRef(A->getValue());
1578 if (mips::hasCompactBranches(CPUName)) {
1579 if (Val == "never" || Val == "always" || Val == "optimal") {
1580 CmdArgs.push_back("-mllvm");
1581 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1583 D.Diag(diag::err_drv_unsupported_option_argument)
1584 << A->getOption().getName() << Val;
1586 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1590 void Clang::AddPPCTargetArgs(const ArgList &Args,
1591 ArgStringList &CmdArgs) const {
1592 // Select the ABI to use.
1593 const char *ABIName = nullptr;
1594 if (getToolChain().getTriple().isOSLinux())
1595 switch (getToolChain().getArch()) {
1596 case llvm::Triple::ppc64: {
1597 // When targeting a processor that supports QPX, or if QPX is
1598 // specifically enabled, default to using the ABI that supports QPX (so
1599 // long as it is not specifically disabled).
1600 bool HasQPX = false;
1601 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1602 HasQPX = A->getValue() == StringRef("a2q");
1603 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1605 ABIName = "elfv1-qpx";
1612 case llvm::Triple::ppc64le:
1619 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1620 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1621 // the option if given as we don't have backend support for any targets
1622 // that don't use the altivec abi.
1623 if (StringRef(A->getValue()) != "altivec")
1624 ABIName = A->getValue();
1626 ppc::FloatABI FloatABI =
1627 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1629 if (FloatABI == ppc::FloatABI::Soft) {
1630 // Floating point operations and argument passing are soft.
1631 CmdArgs.push_back("-msoft-float");
1632 CmdArgs.push_back("-mfloat-abi");
1633 CmdArgs.push_back("soft");
1635 // Floating point operations and argument passing are hard.
1636 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1637 CmdArgs.push_back("-mfloat-abi");
1638 CmdArgs.push_back("hard");
1642 CmdArgs.push_back("-target-abi");
1643 CmdArgs.push_back(ABIName);
1647 void Clang::AddRISCVTargetArgs(const ArgList &Args,
1648 ArgStringList &CmdArgs) const {
1649 // FIXME: currently defaults to the soft-float ABIs. Will need to be
1650 // expanded to select ilp32f, ilp32d, lp64f, lp64d when appropriate.
1651 const char *ABIName = nullptr;
1652 const llvm::Triple &Triple = getToolChain().getTriple();
1653 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1654 ABIName = A->getValue();
1655 else if (Triple.getArch() == llvm::Triple::riscv32)
1657 else if (Triple.getArch() == llvm::Triple::riscv64)
1660 llvm_unreachable("Unexpected triple!");
1662 CmdArgs.push_back("-target-abi");
1663 CmdArgs.push_back(ABIName);
1666 void Clang::AddSparcTargetArgs(const ArgList &Args,
1667 ArgStringList &CmdArgs) const {
1668 sparc::FloatABI FloatABI =
1669 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1671 if (FloatABI == sparc::FloatABI::Soft) {
1672 // Floating point operations and argument passing are soft.
1673 CmdArgs.push_back("-msoft-float");
1674 CmdArgs.push_back("-mfloat-abi");
1675 CmdArgs.push_back("soft");
1677 // Floating point operations and argument passing are hard.
1678 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1679 CmdArgs.push_back("-mfloat-abi");
1680 CmdArgs.push_back("hard");
1684 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1685 ArgStringList &CmdArgs) const {
1686 if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1687 CmdArgs.push_back("-mbackchain");
1690 void Clang::AddX86TargetArgs(const ArgList &Args,
1691 ArgStringList &CmdArgs) const {
1692 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1693 Args.hasArg(options::OPT_mkernel) ||
1694 Args.hasArg(options::OPT_fapple_kext))
1695 CmdArgs.push_back("-disable-red-zone");
1697 // Default to avoid implicit floating-point for kernel/kext code, but allow
1698 // that to be overridden with -mno-soft-float.
1699 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1700 Args.hasArg(options::OPT_fapple_kext));
1701 if (Arg *A = Args.getLastArg(
1702 options::OPT_msoft_float, options::OPT_mno_soft_float,
1703 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1704 const Option &O = A->getOption();
1705 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1706 O.matches(options::OPT_msoft_float));
1708 if (NoImplicitFloat)
1709 CmdArgs.push_back("-no-implicit-float");
1711 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1712 StringRef Value = A->getValue();
1713 if (Value == "intel" || Value == "att") {
1714 CmdArgs.push_back("-mllvm");
1715 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1717 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1718 << A->getOption().getName() << Value;
1720 } else if (getToolChain().getDriver().IsCLMode()) {
1721 CmdArgs.push_back("-mllvm");
1722 CmdArgs.push_back("-x86-asm-syntax=intel");
1725 // Set flags to support MCU ABI.
1726 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1727 CmdArgs.push_back("-mfloat-abi");
1728 CmdArgs.push_back("soft");
1729 CmdArgs.push_back("-mstack-alignment=4");
1733 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1734 ArgStringList &CmdArgs) const {
1735 CmdArgs.push_back("-mqdsp6-compat");
1736 CmdArgs.push_back("-Wreturn-type");
1738 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
1739 CmdArgs.push_back("-mllvm");
1740 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1741 Twine(G.getValue())));
1744 if (!Args.hasArg(options::OPT_fno_short_enums))
1745 CmdArgs.push_back("-fshort-enums");
1746 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1747 CmdArgs.push_back("-mllvm");
1748 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1750 CmdArgs.push_back("-mllvm");
1751 CmdArgs.push_back("-machine-sink-split=0");
1754 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1755 ArgStringList &CmdArgs) const {
1756 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1757 StringRef CPUName = A->getValue();
1759 CmdArgs.push_back("-target-cpu");
1760 CmdArgs.push_back(Args.MakeArgString(CPUName));
1762 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1763 StringRef Value = A->getValue();
1764 // Only support mregparm=4 to support old usage. Report error for all other
1767 if (Value.getAsInteger(10, Mregparm)) {
1768 if (Mregparm != 4) {
1769 getToolChain().getDriver().Diag(
1770 diag::err_drv_unsupported_option_argument)
1771 << A->getOption().getName() << Value;
1777 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1778 ArgStringList &CmdArgs) const {
1779 // Default to "hidden" visibility.
1780 if (!Args.hasArg(options::OPT_fvisibility_EQ,
1781 options::OPT_fvisibility_ms_compat)) {
1782 CmdArgs.push_back("-fvisibility");
1783 CmdArgs.push_back("hidden");
1787 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1788 StringRef Target, const InputInfo &Output,
1789 const InputInfo &Input, const ArgList &Args) const {
1790 // If this is a dry run, do not create the compilation database file.
1791 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1794 using llvm::yaml::escape;
1795 const Driver &D = getToolChain().getDriver();
1797 if (!CompilationDatabase) {
1799 auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1801 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1805 CompilationDatabase = std::move(File);
1807 auto &CDB = *CompilationDatabase;
1808 SmallString<128> Buf;
1809 if (llvm::sys::fs::current_path(Buf))
1811 CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1812 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1813 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1814 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1816 Buf += types::getTypeName(Input.getType());
1817 CDB << ", \"" << escape(Buf) << "\"";
1818 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1821 CDB << ", \"" << escape(Buf) << "\"";
1823 CDB << ", \"" << escape(Input.getFilename()) << "\"";
1824 for (auto &A: Args) {
1825 auto &O = A->getOption();
1826 // Skip language selection, which is positional.
1827 if (O.getID() == options::OPT_x)
1829 // Skip writing dependency output and the compilation database itself.
1830 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1833 if (O.getKind() == Option::InputClass)
1835 // All other arguments are quoted and appended.
1837 A->render(Args, ASL);
1839 CDB << ", \"" << escape(it) << "\"";
1843 CDB << ", \"" << escape(Buf) << "\"]},\n";
1846 static void CollectArgsForIntegratedAssembler(Compilation &C,
1847 const ArgList &Args,
1848 ArgStringList &CmdArgs,
1850 if (UseRelaxAll(C, Args))
1851 CmdArgs.push_back("-mrelax-all");
1853 // Only default to -mincremental-linker-compatible if we think we are
1854 // targeting the MSVC linker.
1855 bool DefaultIncrementalLinkerCompatible =
1856 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1857 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1858 options::OPT_mno_incremental_linker_compatible,
1859 DefaultIncrementalLinkerCompatible))
1860 CmdArgs.push_back("-mincremental-linker-compatible");
1862 switch (C.getDefaultToolChain().getArch()) {
1863 case llvm::Triple::arm:
1864 case llvm::Triple::armeb:
1865 case llvm::Triple::thumb:
1866 case llvm::Triple::thumbeb:
1867 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
1868 StringRef Value = A->getValue();
1869 if (Value == "always" || Value == "never" || Value == "arm" ||
1871 CmdArgs.push_back("-mllvm");
1872 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
1874 D.Diag(diag::err_drv_unsupported_option_argument)
1875 << A->getOption().getName() << Value;
1883 // When passing -I arguments to the assembler we sometimes need to
1884 // unconditionally take the next argument. For example, when parsing
1885 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
1886 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
1887 // arg after parsing the '-I' arg.
1888 bool TakeNextArg = false;
1890 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
1891 const char *MipsTargetFeature = nullptr;
1893 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
1896 for (StringRef Value : A->getValues()) {
1898 CmdArgs.push_back(Value.data());
1899 TakeNextArg = false;
1903 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
1904 Value == "-mbig-obj")
1905 continue; // LLVM handles bigobj automatically
1907 switch (C.getDefaultToolChain().getArch()) {
1910 case llvm::Triple::thumb:
1911 case llvm::Triple::thumbeb:
1912 case llvm::Triple::arm:
1913 case llvm::Triple::armeb:
1914 if (Value == "-mthumb")
1915 // -mthumb has already been processed in ComputeLLVMTriple()
1916 // recognize but skip over here.
1919 case llvm::Triple::mips:
1920 case llvm::Triple::mipsel:
1921 case llvm::Triple::mips64:
1922 case llvm::Triple::mips64el:
1923 if (Value == "--trap") {
1924 CmdArgs.push_back("-target-feature");
1925 CmdArgs.push_back("+use-tcc-in-div");
1928 if (Value == "--break") {
1929 CmdArgs.push_back("-target-feature");
1930 CmdArgs.push_back("-use-tcc-in-div");
1933 if (Value.startswith("-msoft-float")) {
1934 CmdArgs.push_back("-target-feature");
1935 CmdArgs.push_back("+soft-float");
1938 if (Value.startswith("-mhard-float")) {
1939 CmdArgs.push_back("-target-feature");
1940 CmdArgs.push_back("-soft-float");
1944 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
1945 .Case("-mips1", "+mips1")
1946 .Case("-mips2", "+mips2")
1947 .Case("-mips3", "+mips3")
1948 .Case("-mips4", "+mips4")
1949 .Case("-mips5", "+mips5")
1950 .Case("-mips32", "+mips32")
1951 .Case("-mips32r2", "+mips32r2")
1952 .Case("-mips32r3", "+mips32r3")
1953 .Case("-mips32r5", "+mips32r5")
1954 .Case("-mips32r6", "+mips32r6")
1955 .Case("-mips64", "+mips64")
1956 .Case("-mips64r2", "+mips64r2")
1957 .Case("-mips64r3", "+mips64r3")
1958 .Case("-mips64r5", "+mips64r5")
1959 .Case("-mips64r6", "+mips64r6")
1961 if (MipsTargetFeature)
1965 if (Value == "-force_cpusubtype_ALL") {
1966 // Do nothing, this is the default and we don't support anything else.
1967 } else if (Value == "-L") {
1968 CmdArgs.push_back("-msave-temp-labels");
1969 } else if (Value == "--fatal-warnings") {
1970 CmdArgs.push_back("-massembler-fatal-warnings");
1971 } else if (Value == "--noexecstack") {
1972 CmdArgs.push_back("-mnoexecstack");
1973 } else if (Value.startswith("-compress-debug-sections") ||
1974 Value.startswith("--compress-debug-sections") ||
1975 Value == "-nocompress-debug-sections" ||
1976 Value == "--nocompress-debug-sections") {
1977 CmdArgs.push_back(Value.data());
1978 } else if (Value == "-mrelax-relocations=yes" ||
1979 Value == "--mrelax-relocations=yes") {
1980 UseRelaxRelocations = true;
1981 } else if (Value == "-mrelax-relocations=no" ||
1982 Value == "--mrelax-relocations=no") {
1983 UseRelaxRelocations = false;
1984 } else if (Value.startswith("-I")) {
1985 CmdArgs.push_back(Value.data());
1986 // We need to consume the next argument if the current arg is a plain
1987 // -I. The next arg will be the include directory.
1990 } else if (Value.startswith("-gdwarf-")) {
1991 // "-gdwarf-N" options are not cc1as options.
1992 unsigned DwarfVersion = DwarfVersionNum(Value);
1993 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
1994 CmdArgs.push_back(Value.data());
1996 RenderDebugEnablingArgs(Args, CmdArgs,
1997 codegenoptions::LimitedDebugInfo,
1998 DwarfVersion, llvm::DebuggerKind::Default);
2000 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2001 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2002 // Do nothing, we'll validate it later.
2003 } else if (Value == "-defsym") {
2004 if (A->getNumValues() != 2) {
2005 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2008 const char *S = A->getValue(1);
2009 auto Pair = StringRef(S).split('=');
2010 auto Sym = Pair.first;
2011 auto SVal = Pair.second;
2013 if (Sym.empty() || SVal.empty()) {
2014 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2018 if (SVal.getAsInteger(0, IVal)) {
2019 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2022 CmdArgs.push_back(Value.data());
2025 D.Diag(diag::err_drv_unsupported_option_argument)
2026 << A->getOption().getName() << Value;
2030 if (UseRelaxRelocations)
2031 CmdArgs.push_back("--mrelax-relocations");
2032 if (MipsTargetFeature != nullptr) {
2033 CmdArgs.push_back("-target-feature");
2034 CmdArgs.push_back(MipsTargetFeature);
2038 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2039 bool OFastEnabled, const ArgList &Args,
2040 ArgStringList &CmdArgs) {
2041 // Handle various floating point optimization flags, mapping them to the
2042 // appropriate LLVM code generation flags. This is complicated by several
2043 // "umbrella" flags, so we do this by stepping through the flags incrementally
2044 // adjusting what we think is enabled/disabled, then at the end setting the
2045 // LLVM flags based on the final state.
2046 bool HonorINFs = true;
2047 bool HonorNaNs = true;
2048 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2049 bool MathErrno = TC.IsMathErrnoDefault();
2050 bool AssociativeMath = false;
2051 bool ReciprocalMath = false;
2052 bool SignedZeros = true;
2053 bool TrappingMath = true;
2054 StringRef DenormalFPMath = "";
2055 StringRef FPContract = "";
2057 for (const Arg *A : Args) {
2058 switch (A->getOption().getID()) {
2059 // If this isn't an FP option skip the claim below
2062 // Options controlling individual features
2063 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2064 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2065 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2066 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2067 case options::OPT_fmath_errno: MathErrno = true; break;
2068 case options::OPT_fno_math_errno: MathErrno = false; break;
2069 case options::OPT_fassociative_math: AssociativeMath = true; break;
2070 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2071 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2072 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2073 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2074 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2075 case options::OPT_ftrapping_math: TrappingMath = true; break;
2076 case options::OPT_fno_trapping_math: TrappingMath = false; break;
2078 case options::OPT_fdenormal_fp_math_EQ:
2079 DenormalFPMath = A->getValue();
2082 // Validate and pass through -fp-contract option.
2083 case options::OPT_ffp_contract: {
2084 StringRef Val = A->getValue();
2085 if (Val == "fast" || Val == "on" || Val == "off")
2088 D.Diag(diag::err_drv_unsupported_option_argument)
2089 << A->getOption().getName() << Val;
2093 case options::OPT_ffinite_math_only:
2097 case options::OPT_fno_finite_math_only:
2102 case options::OPT_funsafe_math_optimizations:
2103 AssociativeMath = true;
2104 ReciprocalMath = true;
2105 SignedZeros = false;
2106 TrappingMath = false;
2108 case options::OPT_fno_unsafe_math_optimizations:
2109 AssociativeMath = false;
2110 ReciprocalMath = false;
2112 TrappingMath = true;
2113 // -fno_unsafe_math_optimizations restores default denormal handling
2114 DenormalFPMath = "";
2117 case options::OPT_Ofast:
2118 // If -Ofast is the optimization level, then -ffast-math should be enabled
2122 case options::OPT_ffast_math:
2126 AssociativeMath = true;
2127 ReciprocalMath = true;
2128 SignedZeros = false;
2129 TrappingMath = false;
2130 // If fast-math is set then set the fp-contract mode to fast.
2131 FPContract = "fast";
2133 case options::OPT_fno_fast_math:
2136 // Turning on -ffast-math (with either flag) removes the need for
2137 // MathErrno. However, turning *off* -ffast-math merely restores the
2138 // toolchain default (which may be false).
2139 MathErrno = TC.IsMathErrnoDefault();
2140 AssociativeMath = false;
2141 ReciprocalMath = false;
2143 TrappingMath = true;
2144 // -fno_fast_math restores default denormal and fpcontract handling
2145 DenormalFPMath = "";
2150 // If we handled this option claim it
2155 CmdArgs.push_back("-menable-no-infs");
2158 CmdArgs.push_back("-menable-no-nans");
2161 CmdArgs.push_back("-fmath-errno");
2163 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2165 CmdArgs.push_back("-menable-unsafe-fp-math");
2168 CmdArgs.push_back("-fno-signed-zeros");
2170 if (AssociativeMath && !SignedZeros && !TrappingMath)
2171 CmdArgs.push_back("-mreassociate");
2174 CmdArgs.push_back("-freciprocal-math");
2177 CmdArgs.push_back("-fno-trapping-math");
2179 if (!DenormalFPMath.empty())
2181 Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2183 if (!FPContract.empty())
2184 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2186 ParseMRecip(D, Args, CmdArgs);
2188 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2189 // individual features enabled by -ffast-math instead of the option itself as
2190 // that's consistent with gcc's behaviour.
2191 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2192 ReciprocalMath && !SignedZeros && !TrappingMath)
2193 CmdArgs.push_back("-ffast-math");
2195 // Handle __FINITE_MATH_ONLY__ similarly.
2196 if (!HonorINFs && !HonorNaNs)
2197 CmdArgs.push_back("-ffinite-math-only");
2199 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2200 CmdArgs.push_back("-mfpmath");
2201 CmdArgs.push_back(A->getValue());
2204 // Disable a codegen optimization for floating-point casts.
2205 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2206 options::OPT_fstrict_float_cast_overflow, false))
2207 CmdArgs.push_back("-fno-strict-float-cast-overflow");
2210 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2211 const llvm::Triple &Triple,
2212 const InputInfo &Input) {
2213 // Enable region store model by default.
2214 CmdArgs.push_back("-analyzer-store=region");
2216 // Treat blocks as analysis entry points.
2217 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2219 CmdArgs.push_back("-analyzer-eagerly-assume");
2221 // Add default argument set.
2222 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2223 CmdArgs.push_back("-analyzer-checker=core");
2224 CmdArgs.push_back("-analyzer-checker=apiModeling");
2226 if (!Triple.isWindowsMSVCEnvironment()) {
2227 CmdArgs.push_back("-analyzer-checker=unix");
2229 // Enable "unix" checkers that also work on Windows.
2230 CmdArgs.push_back("-analyzer-checker=unix.API");
2231 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2232 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2233 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2234 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2235 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2238 // Disable some unix checkers for PS4.
2239 if (Triple.isPS4CPU()) {
2240 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2241 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2244 if (Triple.isOSDarwin())
2245 CmdArgs.push_back("-analyzer-checker=osx");
2247 CmdArgs.push_back("-analyzer-checker=deadcode");
2249 if (types::isCXX(Input.getType()))
2250 CmdArgs.push_back("-analyzer-checker=cplusplus");
2252 if (!Triple.isPS4CPU()) {
2253 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2254 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2255 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2256 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2257 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2258 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2261 // Default nullability checks.
2262 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2263 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2266 // Set the output format. The default is plist, for (lame) historical reasons.
2267 CmdArgs.push_back("-analyzer-output");
2268 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2269 CmdArgs.push_back(A->getValue());
2271 CmdArgs.push_back("plist");
2273 // Disable the presentation of standard compiler warnings when using
2274 // --analyze. We only want to show static analyzer diagnostics or frontend
2276 CmdArgs.push_back("-w");
2278 // Add -Xanalyzer arguments when running as analyzer.
2279 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2282 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2283 ArgStringList &CmdArgs, bool KernelOrKext) {
2284 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2286 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2287 // doesn't even have a stack!
2288 if (EffectiveTriple.isNVPTX())
2291 // -stack-protector=0 is default.
2292 unsigned StackProtectorLevel = 0;
2293 unsigned DefaultStackProtectorLevel =
2294 TC.GetDefaultStackProtectorLevel(KernelOrKext);
2296 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2297 options::OPT_fstack_protector_all,
2298 options::OPT_fstack_protector_strong,
2299 options::OPT_fstack_protector)) {
2300 if (A->getOption().matches(options::OPT_fstack_protector))
2301 StackProtectorLevel =
2302 std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2303 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2304 StackProtectorLevel = LangOptions::SSPStrong;
2305 else if (A->getOption().matches(options::OPT_fstack_protector_all))
2306 StackProtectorLevel = LangOptions::SSPReq;
2308 StackProtectorLevel = DefaultStackProtectorLevel;
2311 if (StackProtectorLevel) {
2312 CmdArgs.push_back("-stack-protector");
2313 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2316 // --param ssp-buffer-size=
2317 for (const Arg *A : Args.filtered(options::OPT__param)) {
2318 StringRef Str(A->getValue());
2319 if (Str.startswith("ssp-buffer-size=")) {
2320 if (StackProtectorLevel) {
2321 CmdArgs.push_back("-stack-protector-buffer-size");
2322 // FIXME: Verify the argument is a valid integer.
2323 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2330 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2331 const unsigned ForwardedArguments[] = {
2332 options::OPT_cl_opt_disable,
2333 options::OPT_cl_strict_aliasing,
2334 options::OPT_cl_single_precision_constant,
2335 options::OPT_cl_finite_math_only,
2336 options::OPT_cl_kernel_arg_info,
2337 options::OPT_cl_unsafe_math_optimizations,
2338 options::OPT_cl_fast_relaxed_math,
2339 options::OPT_cl_mad_enable,
2340 options::OPT_cl_no_signed_zeros,
2341 options::OPT_cl_denorms_are_zero,
2342 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2343 options::OPT_cl_uniform_work_group_size
2346 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2347 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2348 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2351 for (const auto &Arg : ForwardedArguments)
2352 if (const auto *A = Args.getLastArg(Arg))
2353 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2356 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2357 ArgStringList &CmdArgs) {
2358 bool ARCMTEnabled = false;
2359 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2360 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2361 options::OPT_ccc_arcmt_modify,
2362 options::OPT_ccc_arcmt_migrate)) {
2363 ARCMTEnabled = true;
2364 switch (A->getOption().getID()) {
2365 default: llvm_unreachable("missed a case");
2366 case options::OPT_ccc_arcmt_check:
2367 CmdArgs.push_back("-arcmt-check");
2369 case options::OPT_ccc_arcmt_modify:
2370 CmdArgs.push_back("-arcmt-modify");
2372 case options::OPT_ccc_arcmt_migrate:
2373 CmdArgs.push_back("-arcmt-migrate");
2374 CmdArgs.push_back("-mt-migrate-directory");
2375 CmdArgs.push_back(A->getValue());
2377 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2378 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2383 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2384 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2385 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2388 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2390 D.Diag(diag::err_drv_argument_not_allowed_with)
2391 << A->getAsString(Args) << "-ccc-arcmt-migrate";
2393 CmdArgs.push_back("-mt-migrate-directory");
2394 CmdArgs.push_back(A->getValue());
2396 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2397 options::OPT_objcmt_migrate_subscripting,
2398 options::OPT_objcmt_migrate_property)) {
2399 // None specified, means enable them all.
2400 CmdArgs.push_back("-objcmt-migrate-literals");
2401 CmdArgs.push_back("-objcmt-migrate-subscripting");
2402 CmdArgs.push_back("-objcmt-migrate-property");
2404 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2405 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2406 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2409 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2410 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2411 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2412 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2413 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2414 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2415 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2416 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2417 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2418 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2419 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2420 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2421 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2422 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2423 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2424 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2428 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2429 const ArgList &Args, ArgStringList &CmdArgs) {
2430 // -fbuiltin is default unless -mkernel is used.
2432 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2433 !Args.hasArg(options::OPT_mkernel));
2435 CmdArgs.push_back("-fno-builtin");
2437 // -ffreestanding implies -fno-builtin.
2438 if (Args.hasArg(options::OPT_ffreestanding))
2439 UseBuiltins = false;
2441 // Process the -fno-builtin-* options.
2442 for (const auto &Arg : Args) {
2443 const Option &O = Arg->getOption();
2444 if (!O.matches(options::OPT_fno_builtin_))
2449 // If -fno-builtin is specified, then there's no need to pass the option to
2454 StringRef FuncName = Arg->getValue();
2455 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2458 // le32-specific flags:
2459 // -fno-math-builtin: clang should not convert math builtins to intrinsics
2461 if (TC.getArch() == llvm::Triple::le32)
2462 CmdArgs.push_back("-fno-math-builtin");
2465 void Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
2466 llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Result);
2467 llvm::sys::path::append(Result, "org.llvm.clang.");
2468 appendUserToPath(Result);
2469 llvm::sys::path::append(Result, "ModuleCache");
2472 static void RenderModulesOptions(Compilation &C, const Driver &D,
2473 const ArgList &Args, const InputInfo &Input,
2474 const InputInfo &Output,
2475 ArgStringList &CmdArgs, bool &HaveModules) {
2476 // -fmodules enables the use of precompiled modules (off by default).
2477 // Users can pass -fno-cxx-modules to turn off modules support for
2478 // C++/Objective-C++ programs.
2479 bool HaveClangModules = false;
2480 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2481 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2482 options::OPT_fno_cxx_modules, true);
2483 if (AllowedInCXX || !types::isCXX(Input.getType())) {
2484 CmdArgs.push_back("-fmodules");
2485 HaveClangModules = true;
2489 HaveModules = HaveClangModules;
2490 if (Args.hasArg(options::OPT_fmodules_ts)) {
2491 CmdArgs.push_back("-fmodules-ts");
2495 // -fmodule-maps enables implicit reading of module map files. By default,
2496 // this is enabled if we are using Clang's flavor of precompiled modules.
2497 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2498 options::OPT_fno_implicit_module_maps, HaveClangModules))
2499 CmdArgs.push_back("-fimplicit-module-maps");
2501 // -fmodules-decluse checks that modules used are declared so (off by default)
2502 if (Args.hasFlag(options::OPT_fmodules_decluse,
2503 options::OPT_fno_modules_decluse, false))
2504 CmdArgs.push_back("-fmodules-decluse");
2506 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2507 // all #included headers are part of modules.
2508 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2509 options::OPT_fno_modules_strict_decluse, false))
2510 CmdArgs.push_back("-fmodules-strict-decluse");
2512 // -fno-implicit-modules turns off implicitly compiling modules on demand.
2513 bool ImplicitModules = false;
2514 if (!Args.hasFlag(options::OPT_fimplicit_modules,
2515 options::OPT_fno_implicit_modules, HaveClangModules)) {
2517 CmdArgs.push_back("-fno-implicit-modules");
2518 } else if (HaveModules) {
2519 ImplicitModules = true;
2520 // -fmodule-cache-path specifies where our implicitly-built module files
2521 // should be written.
2522 SmallString<128> Path;
2523 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2524 Path = A->getValue();
2526 if (C.isForDiagnostics()) {
2527 // When generating crash reports, we want to emit the modules along with
2528 // the reproduction sources, so we ignore any provided module path.
2529 Path = Output.getFilename();
2530 llvm::sys::path::replace_extension(Path, ".cache");
2531 llvm::sys::path::append(Path, "modules");
2532 } else if (Path.empty()) {
2533 // No module path was provided: use the default.
2534 Driver::getDefaultModuleCachePath(Path);
2537 const char Arg[] = "-fmodules-cache-path=";
2538 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2539 CmdArgs.push_back(Args.MakeArgString(Path));
2543 // -fprebuilt-module-path specifies where to load the prebuilt module files.
2544 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2545 CmdArgs.push_back(Args.MakeArgString(
2546 std::string("-fprebuilt-module-path=") + A->getValue()));
2551 // -fmodule-name specifies the module that is currently being built (or
2552 // used for header checking by -fmodule-maps).
2553 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2555 // -fmodule-map-file can be used to specify files containing module
2557 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2559 // -fbuiltin-module-map can be used to load the clang
2560 // builtin headers modulemap file.
2561 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2562 SmallString<128> BuiltinModuleMap(D.ResourceDir);
2563 llvm::sys::path::append(BuiltinModuleMap, "include");
2564 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2565 if (llvm::sys::fs::exists(BuiltinModuleMap))
2567 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2570 // The -fmodule-file=<name>=<file> form specifies the mapping of module
2571 // names to precompiled module files (the module is loaded only if used).
2572 // The -fmodule-file=<file> form can be used to unconditionally load
2573 // precompiled module files (whether used or not).
2575 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2577 Args.ClaimAllArgs(options::OPT_fmodule_file);
2579 // When building modules and generating crashdumps, we need to dump a module
2580 // dependency VFS alongside the output.
2581 if (HaveClangModules && C.isForDiagnostics()) {
2582 SmallString<128> VFSDir(Output.getFilename());
2583 llvm::sys::path::replace_extension(VFSDir, ".cache");
2584 // Add the cache directory as a temp so the crash diagnostics pick it up.
2585 C.addTempFile(Args.MakeArgString(VFSDir));
2587 llvm::sys::path::append(VFSDir, "vfs");
2588 CmdArgs.push_back("-module-dependency-dir");
2589 CmdArgs.push_back(Args.MakeArgString(VFSDir));
2592 if (HaveClangModules)
2593 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2595 // Pass through all -fmodules-ignore-macro arguments.
2596 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2597 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2598 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2600 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2602 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2603 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2604 D.Diag(diag::err_drv_argument_not_allowed_with)
2605 << A->getAsString(Args) << "-fbuild-session-timestamp";
2607 llvm::sys::fs::file_status Status;
2608 if (llvm::sys::fs::status(A->getValue(), Status))
2609 D.Diag(diag::err_drv_no_such_file) << A->getValue();
2611 Args.MakeArgString("-fbuild-session-timestamp=" +
2612 Twine((uint64_t)Status.getLastModificationTime()
2617 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2618 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2619 options::OPT_fbuild_session_file))
2620 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2622 Args.AddLastArg(CmdArgs,
2623 options::OPT_fmodules_validate_once_per_build_session);
2626 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
2627 options::OPT_fno_modules_validate_system_headers,
2629 CmdArgs.push_back("-fmodules-validate-system-headers");
2631 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2634 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2635 ArgStringList &CmdArgs) {
2636 // -fsigned-char is default.
2637 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2638 options::OPT_fno_signed_char,
2639 options::OPT_funsigned_char,
2640 options::OPT_fno_unsigned_char)) {
2641 if (A->getOption().matches(options::OPT_funsigned_char) ||
2642 A->getOption().matches(options::OPT_fno_signed_char)) {
2643 CmdArgs.push_back("-fno-signed-char");
2645 } else if (!isSignedCharDefault(T)) {
2646 CmdArgs.push_back("-fno-signed-char");
2649 if (Args.hasFlag(options::OPT_fchar8__t, options::OPT_fno_char8__t, false))
2650 CmdArgs.push_back("-fchar8_t");
2652 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2653 options::OPT_fno_short_wchar)) {
2654 if (A->getOption().matches(options::OPT_fshort_wchar)) {
2655 CmdArgs.push_back("-fwchar-type=short");
2656 CmdArgs.push_back("-fno-signed-wchar");
2658 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2659 CmdArgs.push_back("-fwchar-type=int");
2660 if (IsARM && !(T.isOSWindows() || T.getOS() == llvm::Triple::NetBSD ||
2661 T.getOS() == llvm::Triple::OpenBSD))
2662 CmdArgs.push_back("-fno-signed-wchar");
2664 CmdArgs.push_back("-fsigned-wchar");
2669 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2670 const llvm::Triple &T, const ArgList &Args,
2671 ObjCRuntime &Runtime, bool InferCovariantReturns,
2672 const InputInfo &Input, ArgStringList &CmdArgs) {
2673 const llvm::Triple::ArchType Arch = TC.getArch();
2675 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2676 // is the default. Except for deployment target of 10.5, next runtime is
2677 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2678 if (Runtime.isNonFragile()) {
2679 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2680 options::OPT_fno_objc_legacy_dispatch,
2681 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2682 if (TC.UseObjCMixedDispatch())
2683 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2685 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2689 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2690 // to do Array/Dictionary subscripting by default.
2691 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2692 !T.isMacOSXVersionLT(10, 7) &&
2693 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2694 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2696 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2697 // NOTE: This logic is duplicated in ToolChains.cpp.
2698 if (isObjCAutoRefCount(Args)) {
2701 CmdArgs.push_back("-fobjc-arc");
2703 // FIXME: It seems like this entire block, and several around it should be
2704 // wrapped in isObjC, but for now we just use it here as this is where it
2705 // was being used previously.
2706 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2707 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2708 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2710 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2713 // Allow the user to enable full exceptions code emission.
2714 // We default off for Objective-C, on for Objective-C++.
2715 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2716 options::OPT_fno_objc_arc_exceptions,
2717 /*default=*/types::isCXX(Input.getType())))
2718 CmdArgs.push_back("-fobjc-arc-exceptions");
2721 // Silence warning for full exception code emission options when explicitly
2722 // set to use no ARC.
2723 if (Args.hasArg(options::OPT_fno_objc_arc)) {
2724 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2725 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2728 // -fobjc-infer-related-result-type is the default, except in the Objective-C
2730 if (InferCovariantReturns)
2731 CmdArgs.push_back("-fno-objc-infer-related-result-type");
2733 // Pass down -fobjc-weak or -fno-objc-weak if present.
2734 if (types::isObjC(Input.getType())) {
2736 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
2739 } else if (!Runtime.allowsWeak()) {
2740 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
2741 D.Diag(diag::err_objc_weak_unsupported);
2743 WeakArg->render(Args, CmdArgs);
2748 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
2749 ArgStringList &CmdArgs) {
2750 bool CaretDefault = true;
2751 bool ColumnDefault = true;
2753 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
2754 options::OPT__SLASH_diagnostics_column,
2755 options::OPT__SLASH_diagnostics_caret)) {
2756 switch (A->getOption().getID()) {
2757 case options::OPT__SLASH_diagnostics_caret:
2758 CaretDefault = true;
2759 ColumnDefault = true;
2761 case options::OPT__SLASH_diagnostics_column:
2762 CaretDefault = false;
2763 ColumnDefault = true;
2765 case options::OPT__SLASH_diagnostics_classic:
2766 CaretDefault = false;
2767 ColumnDefault = false;
2772 // -fcaret-diagnostics is default.
2773 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
2774 options::OPT_fno_caret_diagnostics, CaretDefault))
2775 CmdArgs.push_back("-fno-caret-diagnostics");
2777 // -fdiagnostics-fixit-info is default, only pass non-default.
2778 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
2779 options::OPT_fno_diagnostics_fixit_info))
2780 CmdArgs.push_back("-fno-diagnostics-fixit-info");
2782 // Enable -fdiagnostics-show-option by default.
2783 if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
2784 options::OPT_fno_diagnostics_show_option))
2785 CmdArgs.push_back("-fdiagnostics-show-option");
2788 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
2789 CmdArgs.push_back("-fdiagnostics-show-category");
2790 CmdArgs.push_back(A->getValue());
2793 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
2794 options::OPT_fno_diagnostics_show_hotness, false))
2795 CmdArgs.push_back("-fdiagnostics-show-hotness");
2798 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
2800 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
2801 CmdArgs.push_back(Args.MakeArgString(Opt));
2804 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
2805 CmdArgs.push_back("-fdiagnostics-format");
2806 CmdArgs.push_back(A->getValue());
2809 if (const Arg *A = Args.getLastArg(
2810 options::OPT_fdiagnostics_show_note_include_stack,
2811 options::OPT_fno_diagnostics_show_note_include_stack)) {
2812 const Option &O = A->getOption();
2813 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
2814 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
2816 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
2819 // Color diagnostics are parsed by the driver directly from argv and later
2820 // re-parsed to construct this job; claim any possible color diagnostic here
2821 // to avoid warn_drv_unused_argument and diagnose bad
2822 // OPT_fdiagnostics_color_EQ values.
2823 for (const Arg *A : Args) {
2824 const Option &O = A->getOption();
2825 if (!O.matches(options::OPT_fcolor_diagnostics) &&
2826 !O.matches(options::OPT_fdiagnostics_color) &&
2827 !O.matches(options::OPT_fno_color_diagnostics) &&
2828 !O.matches(options::OPT_fno_diagnostics_color) &&
2829 !O.matches(options::OPT_fdiagnostics_color_EQ))
2832 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
2833 StringRef Value(A->getValue());
2834 if (Value != "always" && Value != "never" && Value != "auto")
2835 D.Diag(diag::err_drv_clang_unsupported)
2836 << ("-fdiagnostics-color=" + Value).str();
2841 if (D.getDiags().getDiagnosticOptions().ShowColors)
2842 CmdArgs.push_back("-fcolor-diagnostics");
2844 if (Args.hasArg(options::OPT_fansi_escape_codes))
2845 CmdArgs.push_back("-fansi-escape-codes");
2847 if (!Args.hasFlag(options::OPT_fshow_source_location,
2848 options::OPT_fno_show_source_location))
2849 CmdArgs.push_back("-fno-show-source-location");
2851 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
2852 CmdArgs.push_back("-fdiagnostics-absolute-paths");
2854 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
2856 CmdArgs.push_back("-fno-show-column");
2858 if (!Args.hasFlag(options::OPT_fspell_checking,
2859 options::OPT_fno_spell_checking))
2860 CmdArgs.push_back("-fno-spell-checking");
2863 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
2864 const llvm::Triple &T, const ArgList &Args,
2865 bool EmitCodeView, bool IsWindowsMSVC,
2866 ArgStringList &CmdArgs,
2867 codegenoptions::DebugInfoKind &DebugInfoKind,
2868 const Arg *&SplitDWARFArg) {
2869 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
2870 options::OPT_fno_debug_info_for_profiling, false))
2871 CmdArgs.push_back("-fdebug-info-for-profiling");
2873 // The 'g' groups options involve a somewhat intricate sequence of decisions
2874 // about what to pass from the driver to the frontend, but by the time they
2875 // reach cc1 they've been factored into three well-defined orthogonal choices:
2876 // * what level of debug info to generate
2877 // * what dwarf version to write
2878 // * what debugger tuning to use
2879 // This avoids having to monkey around further in cc1 other than to disable
2880 // codeview if not running in a Windows environment. Perhaps even that
2881 // decision should be made in the driver as well though.
2882 unsigned DWARFVersion = 0;
2883 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
2885 bool SplitDWARFInlining =
2886 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
2887 options::OPT_fno_split_dwarf_inlining, true);
2889 Args.ClaimAllArgs(options::OPT_g_Group);
2891 SplitDWARFArg = Args.getLastArg(options::OPT_gsplit_dwarf);
2893 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
2894 // If the last option explicitly specified a debug-info level, use it.
2895 if (A->getOption().matches(options::OPT_gN_Group)) {
2896 DebugInfoKind = DebugLevelToInfoKind(*A);
2897 // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
2898 // But -gsplit-dwarf is not a g_group option, hence we have to check the
2899 // order explicitly. If -gsplit-dwarf wins, we fix DebugInfoKind later.
2900 // This gets a bit more complicated if you've disabled inline info in the
2901 // skeleton CUs (SplitDWARFInlining) - then there's value in composing
2902 // split-dwarf and line-tables-only, so let those compose naturally in
2904 // And if you just turned off debug info, (-gsplit-dwarf -g0) - do that.
2905 if (SplitDWARFArg) {
2906 if (A->getIndex() > SplitDWARFArg->getIndex()) {
2907 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
2908 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
2909 SplitDWARFInlining))
2910 SplitDWARFArg = nullptr;
2911 } else if (SplitDWARFInlining)
2912 DebugInfoKind = codegenoptions::NoDebugInfo;
2915 // For any other 'g' option, use Limited.
2916 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2920 // If a debugger tuning argument appeared, remember it.
2922 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
2923 if (A->getOption().matches(options::OPT_glldb))
2924 DebuggerTuning = llvm::DebuggerKind::LLDB;
2925 else if (A->getOption().matches(options::OPT_gsce))
2926 DebuggerTuning = llvm::DebuggerKind::SCE;
2928 DebuggerTuning = llvm::DebuggerKind::GDB;
2931 // If a -gdwarf argument appeared, remember it.
2933 Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
2934 options::OPT_gdwarf_4, options::OPT_gdwarf_5))
2935 DWARFVersion = DwarfVersionNum(A->getSpelling());
2937 // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
2938 // argument parsing.
2940 // DWARFVersion remains at 0 if no explicit choice was made.
2941 CmdArgs.push_back("-gcodeview");
2942 } else if (DWARFVersion == 0 &&
2943 DebugInfoKind != codegenoptions::NoDebugInfo) {
2944 DWARFVersion = TC.GetDefaultDwarfVersion();
2947 // We ignore flag -gstrict-dwarf for now.
2948 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
2949 Args.ClaimAllArgs(options::OPT_g_flags_Group);
2951 // Column info is included by default for everything except SCE and CodeView.
2952 // Clang doesn't track end columns, just starting columns, which, in theory,
2953 // is fine for CodeView (and PDB). In practice, however, the Microsoft
2954 // debuggers don't handle missing end columns well, so it's better not to
2955 // include any column info.
2956 if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
2957 /*Default=*/!EmitCodeView &&
2958 DebuggerTuning != llvm::DebuggerKind::SCE))
2959 CmdArgs.push_back("-dwarf-column-info");
2961 // FIXME: Move backend command line options to the module.
2962 // If -gline-tables-only is the last option it wins.
2963 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
2964 Args.hasArg(options::OPT_gmodules)) {
2965 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2966 CmdArgs.push_back("-dwarf-ext-refs");
2967 CmdArgs.push_back("-fmodule-format=obj");
2970 // -gsplit-dwarf should turn on -g and enable the backend dwarf
2971 // splitting and extraction.
2972 // FIXME: Currently only works on Linux.
2973 if (T.isOSLinux()) {
2974 if (!SplitDWARFInlining)
2975 CmdArgs.push_back("-fno-split-dwarf-inlining");
2977 if (SplitDWARFArg) {
2978 if (DebugInfoKind == codegenoptions::NoDebugInfo)
2979 DebugInfoKind = codegenoptions::LimitedDebugInfo;
2980 CmdArgs.push_back("-enable-split-dwarf");
2984 // After we've dealt with all combinations of things that could
2985 // make DebugInfoKind be other than None or DebugLineTablesOnly,
2986 // figure out if we need to "upgrade" it to standalone debug info.
2987 // We parse these two '-f' options whether or not they will be used,
2988 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
2989 bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
2990 options::OPT_fno_standalone_debug,
2991 TC.GetDefaultStandaloneDebug());
2992 if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
2993 DebugInfoKind = codegenoptions::FullDebugInfo;
2995 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source, false)) {
2996 // Source embedding is a vendor extension to DWARF v5. By now we have
2997 // checked if a DWARF version was stated explicitly, and have otherwise
2998 // fallen back to the target default, so if this is still not at least 5 we
3000 if (DWARFVersion < 5)
3001 D.Diag(diag::err_drv_argument_only_allowed_with)
3002 << Args.getLastArg(options::OPT_gembed_source)->getAsString(Args)
3004 CmdArgs.push_back("-gembed-source");
3007 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3010 // -fdebug-macro turns on macro debug info generation.
3011 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3013 CmdArgs.push_back("-debug-info-macro");
3015 // -ggnu-pubnames turns on gnu style pubnames in the backend.
3016 if (Args.hasFlag(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3018 CmdArgs.push_back("-ggnu-pubnames");
3020 // -gdwarf-aranges turns on the emission of the aranges section in the
3022 // Always enabled for SCE tuning.
3023 if (Args.hasArg(options::OPT_gdwarf_aranges) ||
3024 DebuggerTuning == llvm::DebuggerKind::SCE) {
3025 CmdArgs.push_back("-mllvm");
3026 CmdArgs.push_back("-generate-arange-section");
3029 if (Args.hasFlag(options::OPT_fdebug_types_section,
3030 options::OPT_fno_debug_types_section, false)) {
3031 if (!T.isOSBinFormatELF())
3032 D.Diag(diag::err_drv_unsupported_opt_for_target)
3033 << Args.getLastArg(options::OPT_fdebug_types_section)
3036 CmdArgs.push_back("-mllvm");
3037 CmdArgs.push_back("-generate-type-units");
3040 // Decide how to render forward declarations of template instantiations.
3041 // SCE wants full descriptions, others just get them in the name.
3042 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3043 CmdArgs.push_back("-debug-forward-template-params");
3045 // Do we need to explicitly import anonymous namespaces into the parent scope?
3046 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3047 CmdArgs.push_back("-dwarf-explicit-import");
3049 RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
3052 void Clang::ConstructJob(Compilation &C, const JobAction &JA,
3053 const InputInfo &Output, const InputInfoList &Inputs,
3054 const ArgList &Args, const char *LinkingOutput) const {
3055 const llvm::Triple &RawTriple = getToolChain().getTriple();
3056 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
3057 const std::string &TripleStr = Triple.getTriple();
3060 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3061 const Driver &D = getToolChain().getDriver();
3062 ArgStringList CmdArgs;
3064 // Check number of inputs for sanity. We need at least one input.
3065 assert(Inputs.size() >= 1 && "Must have at least one input.");
3066 const InputInfo &Input = Inputs[0];
3067 // CUDA/HIP compilation may have multiple inputs (source file + results of
3068 // device-side compilations). OpenMP device jobs also take the host IR as a
3069 // second input. All other jobs are expected to have exactly one
3071 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3072 bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3073 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3074 assert((IsCuda || IsHIP || (IsOpenMPDevice && Inputs.size() == 2) ||
3075 Inputs.size() == 1) &&
3076 "Unable to handle multiple inputs.");
3078 const llvm::Triple *AuxTriple =
3079 IsCuda ? getToolChain().getAuxTriple() : nullptr;
3081 bool IsWindowsGNU = RawTriple.isWindowsGNUEnvironment();
3082 bool IsWindowsCygnus = RawTriple.isWindowsCygwinEnvironment();
3083 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3084 bool IsIAMCU = RawTriple.isOSIAMCU();
3086 // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3087 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3088 // Windows), we need to pass Windows-specific flags to cc1.
3089 if (IsCuda || IsHIP) {
3090 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3091 IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
3092 IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
3095 // C++ is not supported for IAMCU.
3096 if (IsIAMCU && types::isCXX(Input.getType()))
3097 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3099 // Invoke ourselves in -cc1 mode.
3101 // FIXME: Implement custom jobs for internal actions.
3102 CmdArgs.push_back("-cc1");
3104 // Add the "effective" target triple.
3105 CmdArgs.push_back("-triple");
3106 CmdArgs.push_back(Args.MakeArgString(TripleStr));
3108 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3109 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3110 Args.ClaimAllArgs(options::OPT_MJ);
3113 if (IsCuda || IsHIP) {
3114 // We have to pass the triple of the host if compiling for a CUDA/HIP device
3116 std::string NormalizedTriple;
3117 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
3118 JA.isDeviceOffloading(Action::OFK_HIP))
3119 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3124 (IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
3125 : C.getSingleOffloadToolChain<Action::OFK_HIP>())
3129 CmdArgs.push_back("-aux-triple");
3130 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3133 if (IsOpenMPDevice) {
3134 // We have to pass the triple of the host if compiling for an OpenMP device.
3135 std::string NormalizedTriple =
3136 C.getSingleOffloadToolChain<Action::OFK_Host>()
3139 CmdArgs.push_back("-aux-triple");
3140 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3143 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3144 Triple.getArch() == llvm::Triple::thumb)) {
3145 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3147 Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3149 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3153 // Push all default warning arguments that are specific to
3154 // the given target. These come before user provided warning options
3156 getToolChain().addClangWarningOptions(CmdArgs);
3158 // Select the appropriate action.
3159 RewriteKind rewriteKind = RK_None;
3161 if (isa<AnalyzeJobAction>(JA)) {
3162 assert(JA.getType() == types::TY_Plist && "Invalid output type.");
3163 CmdArgs.push_back("-analyze");
3164 } else if (isa<MigrateJobAction>(JA)) {
3165 CmdArgs.push_back("-migrate");
3166 } else if (isa<PreprocessJobAction>(JA)) {
3167 if (Output.getType() == types::TY_Dependencies)
3168 CmdArgs.push_back("-Eonly");
3170 CmdArgs.push_back("-E");
3171 if (Args.hasArg(options::OPT_rewrite_objc) &&
3172 !Args.hasArg(options::OPT_g_Group))
3173 CmdArgs.push_back("-P");
3175 } else if (isa<AssembleJobAction>(JA)) {
3176 CmdArgs.push_back("-emit-obj");
3178 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3180 // Also ignore explicit -force_cpusubtype_ALL option.
3181 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3182 } else if (isa<PrecompileJobAction>(JA)) {
3183 // Use PCH if the user requested it.
3184 bool UsePCH = D.CCCUsePCH;
3186 if (JA.getType() == types::TY_Nothing)
3187 CmdArgs.push_back("-fsyntax-only");
3188 else if (JA.getType() == types::TY_ModuleFile)
3189 CmdArgs.push_back("-emit-module-interface");
3191 CmdArgs.push_back("-emit-pch");
3193 CmdArgs.push_back("-emit-pth");
3194 } else if (isa<VerifyPCHJobAction>(JA)) {
3195 CmdArgs.push_back("-verify-pch");
3197 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
3198 "Invalid action for clang tool.");
3199 if (JA.getType() == types::TY_Nothing) {
3200 CmdArgs.push_back("-fsyntax-only");
3201 } else if (JA.getType() == types::TY_LLVM_IR ||
3202 JA.getType() == types::TY_LTO_IR) {
3203 CmdArgs.push_back("-emit-llvm");
3204 } else if (JA.getType() == types::TY_LLVM_BC ||
3205 JA.getType() == types::TY_LTO_BC) {
3206 CmdArgs.push_back("-emit-llvm-bc");
3207 } else if (JA.getType() == types::TY_PP_Asm) {
3208 CmdArgs.push_back("-S");
3209 } else if (JA.getType() == types::TY_AST) {
3210 CmdArgs.push_back("-emit-pch");
3211 } else if (JA.getType() == types::TY_ModuleFile) {
3212 CmdArgs.push_back("-module-file-info");
3213 } else if (JA.getType() == types::TY_RewrittenObjC) {
3214 CmdArgs.push_back("-rewrite-objc");
3215 rewriteKind = RK_NonFragile;
3216 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3217 CmdArgs.push_back("-rewrite-objc");
3218 rewriteKind = RK_Fragile;
3220 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
3223 // Preserve use-list order by default when emitting bitcode, so that
3224 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3225 // same result as running passes here. For LTO, we don't need to preserve
3226 // the use-list order, since serialization to bitcode is part of the flow.
3227 if (JA.getType() == types::TY_LLVM_BC)
3228 CmdArgs.push_back("-emit-llvm-uselists");
3230 // Device-side jobs do not support LTO.
3231 bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
3232 JA.isDeviceOffloading(Action::OFK_Host));
3234 if (D.isUsingLTO() && !isDeviceOffloadAction) {
3235 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3237 // The Darwin and PS4 linkers currently use the legacy LTO API, which
3238 // does not support LTO unit features (CFI, whole program vtable opt)
3240 if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3241 D.getLTOMode() == LTOK_Full)
3242 CmdArgs.push_back("-flto-unit");
3246 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3247 if (!types::isLLVMIR(Input.getType()))
3248 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
3250 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3253 if (Args.getLastArg(options::OPT_save_temps_EQ))
3254 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
3256 // Embed-bitcode option.
3257 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3258 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3259 // Add flags implied by -fembed-bitcode.
3260 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3261 // Disable all llvm IR level optimizations.
3262 CmdArgs.push_back("-disable-llvm-passes");
3264 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
3265 CmdArgs.push_back("-fembed-bitcode=marker");
3267 // We normally speed up the clang process a bit by skipping destructors at
3268 // exit, but when we're generating diagnostics we can rely on some of the
3270 if (!C.isForDiagnostics())
3271 CmdArgs.push_back("-disable-free");
3274 const bool IsAssertBuild = false;
3276 const bool IsAssertBuild = true;
3279 // Disable the verification pass in -asserts builds.
3281 CmdArgs.push_back("-disable-llvm-verifier");
3283 // Discard value names in assert builds unless otherwise specified.
3284 if (Args.hasFlag(options::OPT_fdiscard_value_names,
3285 options::OPT_fno_discard_value_names, !IsAssertBuild))
3286 CmdArgs.push_back("-discard-value-names");
3288 // Set the main file name, so that debug info works even with
3290 CmdArgs.push_back("-main-file-name");
3291 CmdArgs.push_back(getBaseInputName(Args, Input));
3293 // Some flags which affect the language (via preprocessor
3295 if (Args.hasArg(options::OPT_static))
3296 CmdArgs.push_back("-static-define");
3298 if (isa<AnalyzeJobAction>(JA))
3299 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3301 CheckCodeGenerationOptions(D, Args);
3303 unsigned FunctionAlignment = ParseFunctionAlignment(getToolChain(), Args);
3304 assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
3305 if (FunctionAlignment) {
3306 CmdArgs.push_back("-function-alignment");
3307 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
3310 llvm::Reloc::Model RelocationModel;
3313 std::tie(RelocationModel, PICLevel, IsPIE) =
3314 ParsePICArgs(getToolChain(), Args);
3316 const char *RMName = RelocationModelName(RelocationModel);
3318 if ((RelocationModel == llvm::Reloc::ROPI ||
3319 RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3320 types::isCXX(Input.getType()) &&
3321 !Args.hasArg(options::OPT_fallow_unsupported))
3322 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3325 CmdArgs.push_back("-mrelocation-model");
3326 CmdArgs.push_back(RMName);
3329 CmdArgs.push_back("-pic-level");
3330 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3332 CmdArgs.push_back("-pic-is-pie");
3335 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3336 CmdArgs.push_back("-meabi");
3337 CmdArgs.push_back(A->getValue());
3340 CmdArgs.push_back("-mthread-model");
3341 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3342 if (!getToolChain().isThreadModelSupported(A->getValue()))
3343 D.Diag(diag::err_drv_invalid_thread_model_for_target)
3344 << A->getValue() << A->getAsString(Args);
3345 CmdArgs.push_back(A->getValue());
3348 CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel()));
3350 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3352 if (Args.hasFlag(options::OPT_fmerge_all_constants,
3353 options::OPT_fno_merge_all_constants, false))
3354 CmdArgs.push_back("-fmerge-all-constants");
3356 if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
3357 options::OPT_fdelete_null_pointer_checks, false))
3358 CmdArgs.push_back("-fno-delete-null-pointer-checks");
3360 // LLVM Code Generator Options.
3362 if (Args.hasArg(options::OPT_frewrite_map_file) ||
3363 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3364 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3365 options::OPT_frewrite_map_file_EQ)) {
3366 StringRef Map = A->getValue();
3367 if (!llvm::sys::fs::exists(Map)) {
3368 D.Diag(diag::err_drv_no_such_file) << Map;
3370 CmdArgs.push_back("-frewrite-map-file");
3371 CmdArgs.push_back(A->getValue());
3377 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3378 StringRef v = A->getValue();
3379 CmdArgs.push_back("-mllvm");
3380 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3384 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3386 CmdArgs.push_back("-fno-jump-tables");
3388 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3389 options::OPT_fno_profile_sample_accurate, false))
3390 CmdArgs.push_back("-fprofile-sample-accurate");
3392 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3393 options::OPT_fno_preserve_as_comments, true))
3394 CmdArgs.push_back("-fno-preserve-as-comments");
3396 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3397 CmdArgs.push_back("-mregparm");
3398 CmdArgs.push_back(A->getValue());
3401 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3402 options::OPT_freg_struct_return)) {
3403 if (getToolChain().getArch() != llvm::Triple::x86) {
3404 D.Diag(diag::err_drv_unsupported_opt_for_target)
3405 << A->getSpelling() << RawTriple.str();
3406 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3407 CmdArgs.push_back("-fpcc-struct-return");
3409 assert(A->getOption().matches(options::OPT_freg_struct_return));
3410 CmdArgs.push_back("-freg-struct-return");
3414 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3415 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3417 if (shouldUseFramePointer(Args, RawTriple))
3418 CmdArgs.push_back("-mdisable-fp-elim");
3419 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3420 options::OPT_fno_zero_initialized_in_bss))
3421 CmdArgs.push_back("-mno-zero-initialized-in-bss");
3423 bool OFastEnabled = isOptimizationLevelFast(Args);
3424 // If -Ofast is the optimization level, then -fstrict-aliasing should be
3425 // enabled. This alias option is being used to simplify the hasFlag logic.
3426 OptSpecifier StrictAliasingAliasOption =
3427 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3428 // We turn strict aliasing off by default if we're in CL mode, since MSVC
3429 // doesn't do any TBAA.
3430 bool TBAAOnByDefault = !D.IsCLMode();
3431 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3432 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3433 CmdArgs.push_back("-relaxed-aliasing");
3434 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3435 options::OPT_fno_struct_path_tbaa))
3436 CmdArgs.push_back("-no-struct-path-tbaa");
3437 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3439 CmdArgs.push_back("-fstrict-enums");
3440 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3442 CmdArgs.push_back("-fno-strict-return");
3443 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3444 options::OPT_fno_allow_editor_placeholders, false))
3445 CmdArgs.push_back("-fallow-editor-placeholders");
3446 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3447 options::OPT_fno_strict_vtable_pointers,
3449 CmdArgs.push_back("-fstrict-vtable-pointers");
3450 if (Args.hasFlag(options::OPT_fforce_emit_vtables,
3451 options::OPT_fno_force_emit_vtables,
3453 CmdArgs.push_back("-fforce-emit-vtables");
3454 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3455 options::OPT_fno_optimize_sibling_calls))
3456 CmdArgs.push_back("-mdisable-tail-calls");
3457 if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
3458 options::OPT_fescaping_block_tail_calls, false))
3459 CmdArgs.push_back("-fno-escaping-block-tail-calls");
3461 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
3462 options::OPT_fno_fine_grained_bitfield_accesses);
3464 // Handle segmented stacks.
3465 if (Args.hasArg(options::OPT_fsplit_stack))
3466 CmdArgs.push_back("-split-stacks");
3468 RenderFloatingPointOptions(getToolChain(), D, OFastEnabled, Args, CmdArgs);
3470 // Decide whether to use verbose asm. Verbose assembly is the default on
3471 // toolchains which have the integrated assembler on by default.
3472 bool IsIntegratedAssemblerDefault =
3473 getToolChain().IsIntegratedAssemblerDefault();
3474 if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
3475 IsIntegratedAssemblerDefault) ||
3476 Args.hasArg(options::OPT_dA))
3477 CmdArgs.push_back("-masm-verbose");
3479 if (!getToolChain().useIntegratedAs())
3480 CmdArgs.push_back("-no-integrated-as");
3482 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
3483 CmdArgs.push_back("-mdebug-pass");
3484 CmdArgs.push_back("Structure");
3486 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
3487 CmdArgs.push_back("-mdebug-pass");
3488 CmdArgs.push_back("Arguments");
3491 // Enable -mconstructor-aliases except on darwin, where we have to work around
3492 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
3493 // aliases aren't supported.
3494 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
3495 CmdArgs.push_back("-mconstructor-aliases");
3497 // Darwin's kernel doesn't support guard variables; just die if we
3499 if (KernelOrKext && RawTriple.isOSDarwin())
3500 CmdArgs.push_back("-fforbid-guard-variables");
3502 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
3504 CmdArgs.push_back("-mms-bitfields");
3507 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
3508 options::OPT_mno_pie_copy_relocations,
3510 CmdArgs.push_back("-mpie-copy-relocations");
3513 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
3514 CmdArgs.push_back("-fno-plt");
3517 // -fhosted is default.
3518 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
3519 // use Freestanding.
3521 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3524 CmdArgs.push_back("-ffreestanding");
3526 // This is a coarse approximation of what llvm-gcc actually does, both
3527 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
3528 // complicated ways.
3529 bool AsynchronousUnwindTables =
3530 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
3531 options::OPT_fno_asynchronous_unwind_tables,
3532 (getToolChain().IsUnwindTablesDefault(Args) ||
3533 getToolChain().getSanitizerArgs().needsUnwindTables()) &&
3535 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
3536 AsynchronousUnwindTables))
3537 CmdArgs.push_back("-munwind-tables");
3539 getToolChain().addClangTargetOptions(Args, CmdArgs,
3540 JA.getOffloadingDeviceKind());
3542 if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
3543 CmdArgs.push_back("-mlimit-float-precision");
3544 CmdArgs.push_back(A->getValue());
3547 // FIXME: Handle -mtune=.
3548 (void)Args.hasArg(options::OPT_mtune_EQ);
3550 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
3551 CmdArgs.push_back("-mcode-model");
3552 CmdArgs.push_back(A->getValue());
3555 // Add the target cpu
3556 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
3558 CmdArgs.push_back("-target-cpu");
3559 CmdArgs.push_back(Args.MakeArgString(CPU));
3562 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
3564 // These two are potentially updated by AddClangCLArgs.
3565 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
3566 bool EmitCodeView = false;
3568 // Add clang-cl arguments.
3569 types::ID InputType = Input.getType();
3571 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
3573 EmitCodeView = Args.hasArg(options::OPT_gcodeview);
3575 const Arg *SplitDWARFArg = nullptr;
3576 RenderDebugOptions(getToolChain(), D, RawTriple, Args, EmitCodeView,
3577 IsWindowsMSVC, CmdArgs, DebugInfoKind, SplitDWARFArg);
3579 // Add the split debug info name to the command lines here so we
3580 // can propagate it to the backend.
3581 bool SplitDWARF = SplitDWARFArg && RawTriple.isOSLinux() &&
3582 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
3583 isa<BackendJobAction>(JA));
3584 const char *SplitDWARFOut;
3586 CmdArgs.push_back("-split-dwarf-file");
3587 SplitDWARFOut = SplitDebugName(Args, Input);
3588 CmdArgs.push_back(SplitDWARFOut);
3591 // Pass the linker version in use.
3592 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
3593 CmdArgs.push_back("-target-linker-version");
3594 CmdArgs.push_back(A->getValue());
3597 if (!shouldUseLeafFramePointer(Args, RawTriple))
3598 CmdArgs.push_back("-momit-leaf-frame-pointer");
3600 // Explicitly error on some things we know we don't support and can't just
3602 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
3604 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
3605 getToolChain().getArch() == llvm::Triple::x86) {
3606 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
3607 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
3608 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
3609 << Unsupported->getOption().getName();
3611 // The faltivec option has been superseded by the maltivec option.
3612 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
3613 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3614 << Unsupported->getOption().getName()
3615 << "please use -maltivec and include altivec.h explicitly";
3616 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
3617 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3618 << Unsupported->getOption().getName() << "please use -mno-altivec";
3621 Args.AddAllArgs(CmdArgs, options::OPT_v);
3622 Args.AddLastArg(CmdArgs, options::OPT_H);
3623 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
3624 CmdArgs.push_back("-header-include-file");
3625 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
3628 Args.AddLastArg(CmdArgs, options::OPT_P);
3629 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
3631 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
3632 CmdArgs.push_back("-diagnostic-log-file");
3633 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
3637 bool UseSeparateSections = isUseSeparateSections(Triple);
3639 if (Args.hasFlag(options::OPT_ffunction_sections,
3640 options::OPT_fno_function_sections, UseSeparateSections)) {
3641 CmdArgs.push_back("-ffunction-sections");
3644 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
3645 UseSeparateSections)) {
3646 CmdArgs.push_back("-fdata-sections");
3649 if (!Args.hasFlag(options::OPT_funique_section_names,
3650 options::OPT_fno_unique_section_names, true))
3651 CmdArgs.push_back("-fno-unique-section-names");
3653 if (auto *A = Args.getLastArg(
3654 options::OPT_finstrument_functions,
3655 options::OPT_finstrument_functions_after_inlining,
3656 options::OPT_finstrument_function_entry_bare))
3657 A->render(Args, CmdArgs);
3659 // NVPTX doesn't support PGO or coverage. There's no runtime support for
3660 // sampling, overhead of call arc collection is way too high and there's no
3661 // way to collect the output.
3662 if (!Triple.isNVPTX())
3663 addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
3665 if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
3666 ABICompatArg->render(Args, CmdArgs);
3668 // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
3669 if (RawTriple.isPS4CPU()) {
3670 PS4cpu::addProfileRTArgs(getToolChain(), Args, CmdArgs);
3671 PS4cpu::addSanitizerArgs(getToolChain(), CmdArgs);
3674 // Pass options for controlling the default header search paths.
3675 if (Args.hasArg(options::OPT_nostdinc)) {
3676 CmdArgs.push_back("-nostdsysteminc");
3677 CmdArgs.push_back("-nobuiltininc");
3679 if (Args.hasArg(options::OPT_nostdlibinc))
3680 CmdArgs.push_back("-nostdsysteminc");
3681 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
3682 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
3685 // Pass the path to compiler resource files.
3686 CmdArgs.push_back("-resource-dir");
3687 CmdArgs.push_back(D.ResourceDir.c_str());
3689 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
3691 RenderARCMigrateToolOptions(D, Args, CmdArgs);
3693 // Add preprocessing options like -I, -D, etc. if we are using the
3696 // FIXME: Support -fpreprocessed
3697 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
3698 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
3700 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
3701 // that "The compiler can only warn and ignore the option if not recognized".
3702 // When building with ccache, it will pass -D options to clang even on
3703 // preprocessed inputs and configure concludes that -fPIC is not supported.
3704 Args.ClaimAllArgs(options::OPT_D);
3706 // Manually translate -O4 to -O3; let clang reject others.
3707 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3708 if (A->getOption().matches(options::OPT_O4)) {
3709 CmdArgs.push_back("-O3");
3710 D.Diag(diag::warn_O4_is_O3);
3712 A->render(Args, CmdArgs);
3716 // Warn about ignored options to clang.
3718 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
3719 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
3724 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
3725 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
3729 claimNoWarnArgs(Args);
3731 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
3733 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
3734 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
3735 CmdArgs.push_back("-pedantic");
3736 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
3737 Args.AddLastArg(CmdArgs, options::OPT_w);
3739 // Fixed point flags
3740 if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
3742 Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
3744 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
3745 // (-ansi is equivalent to -std=c89 or -std=c++98).
3747 // If a std is supplied, only add -trigraphs if it follows the
3749 bool ImplyVCPPCXXVer = false;
3750 if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
3751 if (Std->getOption().matches(options::OPT_ansi))
3752 if (types::isCXX(InputType))
3753 CmdArgs.push_back("-std=c++98");
3755 CmdArgs.push_back("-std=c89");
3757 Std->render(Args, CmdArgs);
3759 // If -f(no-)trigraphs appears after the language standard flag, honor it.
3760 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
3761 options::OPT_ftrigraphs,
3762 options::OPT_fno_trigraphs))
3764 A->render(Args, CmdArgs);
3766 // Honor -std-default.
3768 // FIXME: Clang doesn't correctly handle -std= when the input language
3769 // doesn't match. For the time being just ignore this for C++ inputs;
3770 // eventually we want to do all the standard defaulting here instead of
3771 // splitting it between the driver and clang -cc1.
3772 if (!types::isCXX(InputType))
3773 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
3775 else if (IsWindowsMSVC)
3776 ImplyVCPPCXXVer = true;
3778 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
3779 options::OPT_fno_trigraphs);
3782 // GCC's behavior for -Wwrite-strings is a bit strange:
3783 // * In C, this "warning flag" changes the types of string literals from
3784 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
3785 // for the discarded qualifier.
3786 // * In C++, this is just a normal warning flag.
3788 // Implementing this warning correctly in C is hard, so we follow GCC's
3789 // behavior for now. FIXME: Directly diagnose uses of a string literal as
3790 // a non-const char* in C, rather than using this crude hack.
3791 if (!types::isCXX(InputType)) {
3792 // FIXME: This should behave just like a warning flag, and thus should also
3793 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
3795 Args.getLastArg(options::OPT_Wwrite_strings,
3796 options::OPT_Wno_write_strings, options::OPT_w);
3798 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
3799 CmdArgs.push_back("-fconst-strings");
3802 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
3803 // during C++ compilation, which it is by default. GCC keeps this define even
3804 // in the presence of '-w', match this behavior bug-for-bug.
3805 if (types::isCXX(InputType) &&
3806 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
3808 CmdArgs.push_back("-fdeprecated-macro");
3811 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
3812 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
3813 if (Asm->getOption().matches(options::OPT_fasm))
3814 CmdArgs.push_back("-fgnu-keywords");
3816 CmdArgs.push_back("-fno-gnu-keywords");
3819 if (ShouldDisableDwarfDirectory(Args, getToolChain()))
3820 CmdArgs.push_back("-fno-dwarf-directory-asm");
3822 if (ShouldDisableAutolink(Args, getToolChain()))
3823 CmdArgs.push_back("-fno-autolink");
3825 // Add in -fdebug-compilation-dir if necessary.
3826 addDebugCompDirArg(Args, CmdArgs);
3828 addDebugPrefixMapArg(D, Args, CmdArgs);
3830 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
3831 options::OPT_ftemplate_depth_EQ)) {
3832 CmdArgs.push_back("-ftemplate-depth");
3833 CmdArgs.push_back(A->getValue());
3836 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
3837 CmdArgs.push_back("-foperator-arrow-depth");
3838 CmdArgs.push_back(A->getValue());
3841 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
3842 CmdArgs.push_back("-fconstexpr-depth");
3843 CmdArgs.push_back(A->getValue());
3846 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
3847 CmdArgs.push_back("-fconstexpr-steps");
3848 CmdArgs.push_back(A->getValue());
3851 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
3852 CmdArgs.push_back("-fbracket-depth");
3853 CmdArgs.push_back(A->getValue());
3856 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
3857 options::OPT_Wlarge_by_value_copy_def)) {
3858 if (A->getNumValues()) {
3859 StringRef bytes = A->getValue();
3860 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
3862 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
3865 if (Args.hasArg(options::OPT_relocatable_pch))
3866 CmdArgs.push_back("-relocatable-pch");
3868 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
3869 CmdArgs.push_back("-fconstant-string-class");
3870 CmdArgs.push_back(A->getValue());
3873 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
3874 CmdArgs.push_back("-ftabstop");
3875 CmdArgs.push_back(A->getValue());
3878 if (Args.hasFlag(options::OPT_fstack_size_section,
3879 options::OPT_fno_stack_size_section, RawTriple.isPS4()))
3880 CmdArgs.push_back("-fstack-size-section");
3882 CmdArgs.push_back("-ferror-limit");
3883 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
3884 CmdArgs.push_back(A->getValue());
3886 CmdArgs.push_back("19");
3888 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
3889 CmdArgs.push_back("-fmacro-backtrace-limit");
3890 CmdArgs.push_back(A->getValue());
3893 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
3894 CmdArgs.push_back("-ftemplate-backtrace-limit");
3895 CmdArgs.push_back(A->getValue());
3898 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
3899 CmdArgs.push_back("-fconstexpr-backtrace-limit");
3900 CmdArgs.push_back(A->getValue());
3903 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
3904 CmdArgs.push_back("-fspell-checking-limit");
3905 CmdArgs.push_back(A->getValue());
3908 // Pass -fmessage-length=.
3909 CmdArgs.push_back("-fmessage-length");
3910 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
3911 CmdArgs.push_back(A->getValue());
3913 // If -fmessage-length=N was not specified, determine whether this is a
3914 // terminal and, if so, implicitly define -fmessage-length appropriately.
3915 unsigned N = llvm::sys::Process::StandardErrColumns();
3916 CmdArgs.push_back(Args.MakeArgString(Twine(N)));
3919 // -fvisibility= and -fvisibility-ms-compat are of a piece.
3920 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
3921 options::OPT_fvisibility_ms_compat)) {
3922 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
3923 CmdArgs.push_back("-fvisibility");
3924 CmdArgs.push_back(A->getValue());
3926 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
3927 CmdArgs.push_back("-fvisibility");
3928 CmdArgs.push_back("hidden");
3929 CmdArgs.push_back("-ftype-visibility");
3930 CmdArgs.push_back("default");
3934 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
3936 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
3938 // Forward -f (flag) options which we can pass directly.
3939 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
3940 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
3941 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
3942 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
3943 Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
3944 options::OPT_fno_emulated_tls);
3946 // AltiVec-like language extensions aren't relevant for assembling.
3947 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
3948 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
3950 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
3951 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
3953 // Forward flags for OpenMP. We don't do this if the current action is an
3954 // device offloading action other than OpenMP.
3955 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
3956 options::OPT_fno_openmp, false) &&
3957 (JA.isDeviceOffloading(Action::OFK_None) ||
3958 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
3959 switch (D.getOpenMPRuntime(Args)) {
3960 case Driver::OMPRT_OMP:
3961 case Driver::OMPRT_IOMP5:
3962 // Clang can generate useful OpenMP code for these two runtime libraries.
3963 CmdArgs.push_back("-fopenmp");
3965 // If no option regarding the use of TLS in OpenMP codegeneration is
3966 // given, decide a default based on the target. Otherwise rely on the
3967 // options and pass the right information to the frontend.
3968 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
3969 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
3970 CmdArgs.push_back("-fnoopenmp-use-tls");
3971 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
3972 options::OPT_fno_openmp_simd);
3973 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3975 // When in OpenMP offloading mode with NVPTX target, forward
3977 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_cuda_mode,
3978 options::OPT_fno_openmp_cuda_mode);
3981 // By default, if Clang doesn't know how to generate useful OpenMP code
3982 // for a specific runtime library, we just don't pass the '-fopenmp' flag
3983 // down to the actual compilation.
3984 // FIXME: It would be better to have a mode which *only* omits IR
3985 // generation based on the OpenMP support so that we get consistent
3986 // semantic analysis, etc.
3990 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
3991 options::OPT_fno_openmp_simd);
3992 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3995 const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs();
3996 Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType);
3998 const XRayArgs &XRay = getToolChain().getXRayArgs();
3999 XRay.addArgs(getToolChain(), Args, CmdArgs, InputType);
4001 if (getToolChain().SupportsProfiling())
4002 Args.AddLastArg(CmdArgs, options::OPT_pg);
4004 if (getToolChain().SupportsProfiling())
4005 Args.AddLastArg(CmdArgs, options::OPT_mfentry);
4007 // -flax-vector-conversions is default.
4008 if (!Args.hasFlag(options::OPT_flax_vector_conversions,
4009 options::OPT_fno_lax_vector_conversions))
4010 CmdArgs.push_back("-fno-lax-vector-conversions");
4012 if (Args.getLastArg(options::OPT_fapple_kext) ||
4013 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
4014 CmdArgs.push_back("-fapple-kext");
4016 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
4017 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
4018 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
4019 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
4020 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
4022 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
4023 CmdArgs.push_back("-ftrapv-handler");
4024 CmdArgs.push_back(A->getValue());
4027 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
4029 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
4030 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
4031 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
4032 if (A->getOption().matches(options::OPT_fwrapv))
4033 CmdArgs.push_back("-fwrapv");
4034 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
4035 options::OPT_fno_strict_overflow)) {
4036 if (A->getOption().matches(options::OPT_fno_strict_overflow))
4037 CmdArgs.push_back("-fwrapv");
4040 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
4041 options::OPT_fno_reroll_loops))
4042 if (A->getOption().matches(options::OPT_freroll_loops))
4043 CmdArgs.push_back("-freroll-loops");
4045 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
4046 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
4047 options::OPT_fno_unroll_loops);
4049 Args.AddLastArg(CmdArgs, options::OPT_pthread);
4051 RenderSSPOptions(getToolChain(), Args, CmdArgs, KernelOrKext);
4053 // Translate -mstackrealign
4054 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
4056 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
4058 if (Args.hasArg(options::OPT_mstack_alignment)) {
4059 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
4060 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
4063 if (Args.hasArg(options::OPT_mstack_probe_size)) {
4064 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
4067 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
4069 CmdArgs.push_back("-mstack-probe-size=0");
4072 if (!Args.hasFlag(options::OPT_mstack_arg_probe,
4073 options::OPT_mno_stack_arg_probe, true))
4074 CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
4076 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
4077 options::OPT_mno_restrict_it)) {
4078 if (A->getOption().matches(options::OPT_mrestrict_it)) {
4079 CmdArgs.push_back("-mllvm");
4080 CmdArgs.push_back("-arm-restrict-it");
4082 CmdArgs.push_back("-mllvm");
4083 CmdArgs.push_back("-arm-no-restrict-it");
4085 } else if (Triple.isOSWindows() &&
4086 (Triple.getArch() == llvm::Triple::arm ||
4087 Triple.getArch() == llvm::Triple::thumb)) {
4088 // Windows on ARM expects restricted IT blocks
4089 CmdArgs.push_back("-mllvm");
4090 CmdArgs.push_back("-arm-restrict-it");
4093 // Forward -cl options to -cc1
4094 RenderOpenCLOptions(Args, CmdArgs);
4096 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
4098 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
4101 // Forward -f options with positive and negative forms; we translate
4103 if (Arg *A = getLastProfileSampleUseArg(Args)) {
4104 StringRef fname = A->getValue();
4105 if (!llvm::sys::fs::exists(fname))
4106 D.Diag(diag::err_drv_no_such_file) << fname;
4108 A->render(Args, CmdArgs);
4111 RenderBuiltinOptions(getToolChain(), RawTriple, Args, CmdArgs);
4113 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4114 options::OPT_fno_assume_sane_operator_new))
4115 CmdArgs.push_back("-fno-assume-sane-operator-new");
4117 // -fblocks=0 is default.
4118 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4119 getToolChain().IsBlocksDefault()) ||
4120 (Args.hasArg(options::OPT_fgnu_runtime) &&
4121 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4122 !Args.hasArg(options::OPT_fno_blocks))) {
4123 CmdArgs.push_back("-fblocks");
4125 if (!Args.hasArg(options::OPT_fgnu_runtime) &&
4126 !getToolChain().hasBlocksRuntime())
4127 CmdArgs.push_back("-fblocks-runtime-optional");
4130 // -fencode-extended-block-signature=1 is default.
4131 if (getToolChain().IsEncodeExtendedBlockSignatureDefault())
4132 CmdArgs.push_back("-fencode-extended-block-signature");
4134 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4136 types::isCXX(InputType)) {
4137 CmdArgs.push_back("-fcoroutines-ts");
4140 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4141 options::OPT_fno_double_square_bracket_attributes);
4143 bool HaveModules = false;
4144 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4146 // -faccess-control is default.
4147 if (Args.hasFlag(options::OPT_fno_access_control,
4148 options::OPT_faccess_control, false))
4149 CmdArgs.push_back("-fno-access-control");
4151 // -felide-constructors is the default.
4152 if (Args.hasFlag(options::OPT_fno_elide_constructors,
4153 options::OPT_felide_constructors, false))
4154 CmdArgs.push_back("-fno-elide-constructors");
4156 ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode();
4158 if (KernelOrKext || (types::isCXX(InputType) &&
4159 (RTTIMode == ToolChain::RM_Disabled)))
4160 CmdArgs.push_back("-fno-rtti");
4162 // -fshort-enums=0 is default for all architectures except Hexagon.
4163 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4164 getToolChain().getArch() == llvm::Triple::hexagon))
4165 CmdArgs.push_back("-fshort-enums");
4167 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4169 // -fuse-cxa-atexit is default.
4171 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4172 !RawTriple.isOSWindows() &&
4173 RawTriple.getOS() != llvm::Triple::Solaris &&
4174 getToolChain().getArch() != llvm::Triple::hexagon &&
4175 getToolChain().getArch() != llvm::Triple::xcore &&
4176 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4177 RawTriple.hasEnvironment())) ||
4179 CmdArgs.push_back("-fno-use-cxa-atexit");
4181 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
4182 options::OPT_fno_register_global_dtors_with_atexit,
4183 RawTriple.isOSDarwin() && !KernelOrKext))
4184 CmdArgs.push_back("-fregister-global-dtors-with-atexit");
4186 // -fms-extensions=0 is default.
4187 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4189 CmdArgs.push_back("-fms-extensions");
4191 // -fno-use-line-directives is default.
4192 if (Args.hasFlag(options::OPT_fuse_line_directives,
4193 options::OPT_fno_use_line_directives, false))
4194 CmdArgs.push_back("-fuse-line-directives");
4196 // -fms-compatibility=0 is default.
4197 if (Args.hasFlag(options::OPT_fms_compatibility,
4198 options::OPT_fno_ms_compatibility,
4200 Args.hasFlag(options::OPT_fms_extensions,
4201 options::OPT_fno_ms_extensions, true))))
4202 CmdArgs.push_back("-fms-compatibility");
4204 VersionTuple MSVT = getToolChain().computeMSVCVersion(&D, Args);
4207 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4209 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4210 if (ImplyVCPPCXXVer) {
4211 StringRef LanguageStandard;
4212 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4213 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4214 .Case("c++14", "-std=c++14")
4215 .Case("c++17", "-std=c++17")
4216 .Case("c++latest", "-std=c++2a")
4218 if (LanguageStandard.empty())
4219 D.Diag(clang::diag::warn_drv_unused_argument)
4220 << StdArg->getAsString(Args);
4223 if (LanguageStandard.empty()) {
4224 if (IsMSVC2015Compatible)
4225 LanguageStandard = "-std=c++14";
4227 LanguageStandard = "-std=c++11";
4230 CmdArgs.push_back(LanguageStandard.data());
4233 // -fno-borland-extensions is default.
4234 if (Args.hasFlag(options::OPT_fborland_extensions,
4235 options::OPT_fno_borland_extensions, false))
4236 CmdArgs.push_back("-fborland-extensions");
4238 // -fno-declspec is default, except for PS4.
4239 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4241 CmdArgs.push_back("-fdeclspec");
4242 else if (Args.hasArg(options::OPT_fno_declspec))
4243 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4245 // -fthreadsafe-static is default, except for MSVC compatibility versions less
4247 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4248 options::OPT_fno_threadsafe_statics,
4249 !IsWindowsMSVC || IsMSVC2015Compatible))
4250 CmdArgs.push_back("-fno-threadsafe-statics");
4252 // -fno-delayed-template-parsing is default, except when targeting MSVC.
4253 // Many old Windows SDK versions require this to parse.
4254 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4255 // compiler. We should be able to disable this by default at some point.
4256 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4257 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4258 CmdArgs.push_back("-fdelayed-template-parsing");
4260 // -fgnu-keywords default varies depending on language; only pass if
4262 if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
4263 options::OPT_fno_gnu_keywords))
4264 A->render(Args, CmdArgs);
4266 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4268 CmdArgs.push_back("-fgnu89-inline");
4270 if (Args.hasArg(options::OPT_fno_inline))
4271 CmdArgs.push_back("-fno-inline");
4273 if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
4274 options::OPT_finline_hint_functions,
4275 options::OPT_fno_inline_functions))
4276 InlineArg->render(Args, CmdArgs);
4278 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4279 options::OPT_fno_experimental_new_pass_manager);
4281 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4282 RenderObjCOptions(getToolChain(), D, RawTriple, Args, Runtime,
4283 rewriteKind != RK_None, Input, CmdArgs);
4285 if (Args.hasFlag(options::OPT_fapplication_extension,
4286 options::OPT_fno_application_extension, false))
4287 CmdArgs.push_back("-fapplication-extension");
4289 // Handle GCC-style exception args.
4290 if (!C.getDriver().IsCLMode())
4291 addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, Runtime,
4294 // Handle exception personalities
4295 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4296 options::OPT_fseh_exceptions,
4297 options::OPT_fdwarf_exceptions);
4299 const Option &Opt = A->getOption();
4300 if (Opt.matches(options::OPT_fsjlj_exceptions))
4301 CmdArgs.push_back("-fsjlj-exceptions");
4302 if (Opt.matches(options::OPT_fseh_exceptions))
4303 CmdArgs.push_back("-fseh-exceptions");
4304 if (Opt.matches(options::OPT_fdwarf_exceptions))
4305 CmdArgs.push_back("-fdwarf-exceptions");
4307 switch (getToolChain().GetExceptionModel(Args)) {
4310 case llvm::ExceptionHandling::DwarfCFI:
4311 CmdArgs.push_back("-fdwarf-exceptions");
4313 case llvm::ExceptionHandling::SjLj:
4314 CmdArgs.push_back("-fsjlj-exceptions");
4316 case llvm::ExceptionHandling::WinEH:
4317 CmdArgs.push_back("-fseh-exceptions");
4322 // C++ "sane" operator new.
4323 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4324 options::OPT_fno_assume_sane_operator_new))
4325 CmdArgs.push_back("-fno-assume-sane-operator-new");
4327 // -frelaxed-template-template-args is off by default, as it is a severe
4328 // breaking change until a corresponding change to template partial ordering
4330 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4331 options::OPT_fno_relaxed_template_template_args, false))
4332 CmdArgs.push_back("-frelaxed-template-template-args");
4334 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4336 if (Args.hasFlag(options::OPT_fsized_deallocation,
4337 options::OPT_fno_sized_deallocation, false))
4338 CmdArgs.push_back("-fsized-deallocation");
4340 // -faligned-allocation is on by default in C++17 onwards and otherwise off
4342 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4343 options::OPT_fno_aligned_allocation,
4344 options::OPT_faligned_new_EQ)) {
4345 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4346 CmdArgs.push_back("-fno-aligned-allocation");
4348 CmdArgs.push_back("-faligned-allocation");
4351 // The default new alignment can be specified using a dedicated option or via
4352 // a GCC-compatible option that also turns on aligned allocation.
4353 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4354 options::OPT_faligned_new_EQ))
4356 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4358 // -fconstant-cfstrings is default, and may be subject to argument translation
4360 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4361 options::OPT_fno_constant_cfstrings) ||
4362 !Args.hasFlag(options::OPT_mconstant_cfstrings,
4363 options::OPT_mno_constant_cfstrings))
4364 CmdArgs.push_back("-fno-constant-cfstrings");
4366 // -fno-pascal-strings is default, only pass non-default.
4367 if (Args.hasFlag(options::OPT_fpascal_strings,
4368 options::OPT_fno_pascal_strings, false))
4369 CmdArgs.push_back("-fpascal-strings");
4371 // Honor -fpack-struct= and -fpack-struct, if given. Note that
4372 // -fno-pack-struct doesn't apply to -fpack-struct=.
4373 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4374 std::string PackStructStr = "-fpack-struct=";
4375 PackStructStr += A->getValue();
4376 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4377 } else if (Args.hasFlag(options::OPT_fpack_struct,
4378 options::OPT_fno_pack_struct, false)) {
4379 CmdArgs.push_back("-fpack-struct=1");
4382 // Handle -fmax-type-align=N and -fno-type-align
4383 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4384 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4385 if (!SkipMaxTypeAlign) {
4386 std::string MaxTypeAlignStr = "-fmax-type-align=";
4387 MaxTypeAlignStr += A->getValue();
4388 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4390 } else if (RawTriple.isOSDarwin()) {
4391 if (!SkipMaxTypeAlign) {
4392 std::string MaxTypeAlignStr = "-fmax-type-align=16";
4393 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4397 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
4398 CmdArgs.push_back("-Qn");
4400 // -fcommon is the default unless compiling kernel code or the target says so
4401 bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4402 if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4404 CmdArgs.push_back("-fno-common");
4406 // -fsigned-bitfields is default, and clang doesn't yet support
4407 // -funsigned-bitfields.
4408 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
4409 options::OPT_funsigned_bitfields))
4410 D.Diag(diag::warn_drv_clang_unsupported)
4411 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
4413 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
4414 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
4415 D.Diag(diag::err_drv_clang_unsupported)
4416 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
4418 // -finput_charset=UTF-8 is default. Reject others
4419 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
4420 StringRef value = inputCharset->getValue();
4421 if (!value.equals_lower("utf-8"))
4422 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4426 // -fexec_charset=UTF-8 is default. Reject others
4427 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
4428 StringRef value = execCharset->getValue();
4429 if (!value.equals_lower("utf-8"))
4430 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
4434 RenderDiagnosticsOptions(D, Args, CmdArgs);
4436 // -fno-asm-blocks is default.
4437 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4439 CmdArgs.push_back("-fasm-blocks");
4441 // -fgnu-inline-asm is default.
4442 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4443 options::OPT_fno_gnu_inline_asm, true))
4444 CmdArgs.push_back("-fno-gnu-inline-asm");
4446 // Enable vectorization per default according to the optimization level
4447 // selected. For optimization levels that want vectorization we use the alias
4448 // option to simplify the hasFlag logic.
4449 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4450 OptSpecifier VectorizeAliasOption =
4451 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4452 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4453 options::OPT_fno_vectorize, EnableVec))
4454 CmdArgs.push_back("-vectorize-loops");
4456 // -fslp-vectorize is enabled based on the optimization level selected.
4457 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4458 OptSpecifier SLPVectAliasOption =
4459 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4460 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4461 options::OPT_fno_slp_vectorize, EnableSLPVec))
4462 CmdArgs.push_back("-vectorize-slp");
4464 ParseMPreferVectorWidth(D, Args, CmdArgs);
4466 if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4467 A->render(Args, CmdArgs);
4469 if (Arg *A = Args.getLastArg(
4470 options::OPT_fsanitize_undefined_strip_path_components_EQ))
4471 A->render(Args, CmdArgs);
4473 // -fdollars-in-identifiers default varies depending on platform and
4474 // language; only pass if specified.
4475 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4476 options::OPT_fno_dollars_in_identifiers)) {
4477 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4478 CmdArgs.push_back("-fdollars-in-identifiers");
4480 CmdArgs.push_back("-fno-dollars-in-identifiers");
4483 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4484 // practical purposes.
4485 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4486 options::OPT_fno_unit_at_a_time)) {
4487 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4488 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4491 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4492 options::OPT_fno_apple_pragma_pack, false))
4493 CmdArgs.push_back("-fapple-pragma-pack");
4495 if (Args.hasFlag(options::OPT_fsave_optimization_record,
4496 options::OPT_foptimization_record_file_EQ,
4497 options::OPT_fno_save_optimization_record, false)) {
4498 CmdArgs.push_back("-opt-record-file");
4500 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4502 CmdArgs.push_back(A->getValue());
4506 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
4507 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
4508 F = FinalOutput->getValue();
4512 // Use the input filename.
4513 F = llvm::sys::path::stem(Input.getBaseInput());
4515 // If we're compiling for an offload architecture (i.e. a CUDA device),
4516 // we need to make the file name for the device compilation different
4517 // from the host compilation.
4518 if (!JA.isDeviceOffloading(Action::OFK_None) &&
4519 !JA.isDeviceOffloading(Action::OFK_Host)) {
4520 llvm::sys::path::replace_extension(F, "");
4521 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
4522 Triple.normalize());
4524 F += JA.getOffloadingArch();
4528 llvm::sys::path::replace_extension(F, "opt.yaml");
4529 CmdArgs.push_back(Args.MakeArgString(F));
4533 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
4534 options::OPT_fno_rewrite_imports, false);
4536 CmdArgs.push_back("-frewrite-imports");
4538 // Enable rewrite includes if the user's asked for it or if we're generating
4540 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
4541 // nice to enable this when doing a crashdump for modules as well.
4542 if (Args.hasFlag(options::OPT_frewrite_includes,
4543 options::OPT_fno_rewrite_includes, false) ||
4544 (C.isForDiagnostics() && (RewriteImports || !HaveModules)))
4545 CmdArgs.push_back("-frewrite-includes");
4547 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
4548 if (Arg *A = Args.getLastArg(options::OPT_traditional,
4549 options::OPT_traditional_cpp)) {
4550 if (isa<PreprocessJobAction>(JA))
4551 CmdArgs.push_back("-traditional-cpp");
4553 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
4556 Args.AddLastArg(CmdArgs, options::OPT_dM);
4557 Args.AddLastArg(CmdArgs, options::OPT_dD);
4559 // Handle serialized diagnostics.
4560 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
4561 CmdArgs.push_back("-serialize-diagnostic-file");
4562 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
4565 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
4566 CmdArgs.push_back("-fretain-comments-from-system-headers");
4568 // Forward -fcomment-block-commands to -cc1.
4569 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
4570 // Forward -fparse-all-comments to -cc1.
4571 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
4573 // Turn -fplugin=name.so into -load name.so
4574 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
4575 CmdArgs.push_back("-load");
4576 CmdArgs.push_back(A->getValue());
4580 // Setup statistics file output.
4581 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
4582 if (!StatsFile.empty())
4583 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
4585 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
4587 // -finclude-default-header flag is for preprocessor,
4588 // do not pass it to other cc1 commands when save-temps is enabled
4589 if (C.getDriver().isSaveTempsEnabled() &&
4590 !isa<PreprocessJobAction>(JA)) {
4591 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
4593 if (StringRef(Arg->getValue()) != "-finclude-default-header")
4594 CmdArgs.push_back(Arg->getValue());
4598 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
4600 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
4603 // We translate this by hand to the -cc1 argument, since nightly test uses
4604 // it and developers have been trained to spell it with -mllvm. Both
4605 // spellings are now deprecated and should be removed.
4606 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
4607 CmdArgs.push_back("-disable-llvm-optzns");
4609 A->render(Args, CmdArgs);
4613 // With -save-temps, we want to save the unoptimized bitcode output from the
4614 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
4616 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
4617 // has slightly different breakdown between stages.
4618 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
4619 // pristine IR generated by the frontend. Ideally, a new compile action should
4620 // be added so both IR can be captured.
4621 if (C.getDriver().isSaveTempsEnabled() &&
4622 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
4623 isa<CompileJobAction>(JA))
4624 CmdArgs.push_back("-disable-llvm-passes");
4626 if (Output.getType() == types::TY_Dependencies) {
4627 // Handled with other dependency code.
4628 } else if (Output.isFilename()) {
4629 CmdArgs.push_back("-o");
4630 CmdArgs.push_back(Output.getFilename());
4632 assert(Output.isNothing() && "Invalid output.");
4635 addDashXForInput(Args, Input, CmdArgs);
4637 if (Input.isFilename())
4638 CmdArgs.push_back(Input.getFilename());
4640 Input.getInputArg().renderAsInput(Args, CmdArgs);
4642 Args.AddAllArgs(CmdArgs, options::OPT_undef);
4644 const char *Exec = D.getClangProgramPath();
4646 // Optionally embed the -cc1 level arguments into the debug info, for build
4648 // Also record command line arguments into the debug info if
4649 // -grecord-gcc-switches options is set on.
4650 // By default, -gno-record-gcc-switches is set on and no recording.
4651 if (getToolChain().UseDwarfDebugFlags() ||
4652 Args.hasFlag(options::OPT_grecord_gcc_switches,
4653 options::OPT_gno_record_gcc_switches, false)) {
4654 ArgStringList OriginalArgs;
4655 for (const auto &Arg : Args)
4656 Arg->render(Args, OriginalArgs);
4658 SmallString<256> Flags;
4660 for (const char *OriginalArg : OriginalArgs) {
4661 SmallString<128> EscapedArg;
4662 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
4664 Flags += EscapedArg;
4666 CmdArgs.push_back("-dwarf-debug-flags");
4667 CmdArgs.push_back(Args.MakeArgString(Flags));
4671 // Host-side cuda compilation receives all device-side outputs in a single
4672 // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
4673 if (Inputs.size() > 1) {
4674 assert(Inputs.size() == 2 && "More than one GPU binary!");
4675 CmdArgs.push_back("-fcuda-include-gpubinary");
4676 CmdArgs.push_back(Inputs[1].getFilename());
4679 if (Args.hasFlag(options::OPT_fcuda_rdc, options::OPT_fno_cuda_rdc, false))
4680 CmdArgs.push_back("-fcuda-rdc");
4681 if (Args.hasFlag(options::OPT_fcuda_short_ptr,
4682 options::OPT_fno_cuda_short_ptr, false))
4683 CmdArgs.push_back("-fcuda-short-ptr");
4686 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
4687 // to specify the result of the compile phase on the host, so the meaningful
4688 // device declarations can be identified. Also, -fopenmp-is-device is passed
4689 // along to tell the frontend that it is generating code for a device, so that
4690 // only the relevant declarations are emitted.
4691 if (IsOpenMPDevice) {
4692 CmdArgs.push_back("-fopenmp-is-device");
4693 if (Inputs.size() == 2) {
4694 CmdArgs.push_back("-fopenmp-host-ir-file-path");
4695 CmdArgs.push_back(Args.MakeArgString(Inputs.back().getFilename()));
4699 // For all the host OpenMP offloading compile jobs we need to pass the targets
4700 // information using -fopenmp-targets= option.
4701 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
4702 SmallString<128> TargetInfo("-fopenmp-targets=");
4704 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
4705 assert(Tgts && Tgts->getNumValues() &&
4706 "OpenMP offloading has to have targets specified.");
4707 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
4710 // We need to get the string from the triple because it may be not exactly
4711 // the same as the one we get directly from the arguments.
4712 llvm::Triple T(Tgts->getValue(i));
4713 TargetInfo += T.getTriple();
4715 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
4718 bool WholeProgramVTables =
4719 Args.hasFlag(options::OPT_fwhole_program_vtables,
4720 options::OPT_fno_whole_program_vtables, false);
4721 if (WholeProgramVTables) {
4722 if (!D.isUsingLTO())
4723 D.Diag(diag::err_drv_argument_only_allowed_with)
4724 << "-fwhole-program-vtables"
4726 CmdArgs.push_back("-fwhole-program-vtables");
4729 if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
4730 options::OPT_fno_experimental_isel)) {
4731 CmdArgs.push_back("-mllvm");
4732 if (A->getOption().matches(options::OPT_fexperimental_isel)) {
4733 CmdArgs.push_back("-global-isel=1");
4735 // GISel is on by default on AArch64 -O0, so don't bother adding
4736 // the fallback remarks for it. Other combinations will add a warning of
4738 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
4739 bool IsOptLevelSupported = false;
4741 Arg *A = Args.getLastArg(options::OPT_O_Group);
4742 if (Triple.getArch() == llvm::Triple::aarch64) {
4743 if (!A || A->getOption().matches(options::OPT_O0))
4744 IsOptLevelSupported = true;
4746 if (!IsArchSupported || !IsOptLevelSupported) {
4747 CmdArgs.push_back("-mllvm");
4748 CmdArgs.push_back("-global-isel-abort=2");
4750 if (!IsArchSupported)
4751 D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
4753 D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
4756 CmdArgs.push_back("-global-isel=0");
4760 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
4761 options::OPT_fno_force_enable_int128)) {
4762 if (A->getOption().matches(options::OPT_fforce_enable_int128))
4763 CmdArgs.push_back("-fforce-enable-int128");
4766 if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
4767 options::OPT_fno_complete_member_pointers, false))
4768 CmdArgs.push_back("-fcomplete-member-pointers");
4770 if (Arg *A = Args.getLastArg(options::OPT_moutline,
4771 options::OPT_mno_outline)) {
4772 if (A->getOption().matches(options::OPT_moutline)) {
4773 // We only support -moutline in AArch64 right now. If we're not compiling
4774 // for AArch64, emit a warning and ignore the flag. Otherwise, add the
4775 // proper mllvm flags.
4776 if (Triple.getArch() != llvm::Triple::aarch64) {
4777 D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
4779 CmdArgs.push_back("-mllvm");
4780 CmdArgs.push_back("-enable-machine-outliner");
4783 // Disable all outlining behaviour.
4784 CmdArgs.push_back("-mllvm");
4785 CmdArgs.push_back("-enable-machine-outliner=never");
4789 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
4790 getToolChain().getTriple().isOSBinFormatELF() &&
4791 getToolChain().useIntegratedAs()))
4792 CmdArgs.push_back("-faddrsig");
4794 // Finally add the compile command to the compilation.
4795 if (Args.hasArg(options::OPT__SLASH_fallback) &&
4796 Output.getType() == types::TY_Object &&
4797 (InputType == types::TY_C || InputType == types::TY_CXX)) {
4799 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
4800 C.addCommand(llvm::make_unique<FallbackCommand>(
4801 JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
4802 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
4803 isa<PrecompileJobAction>(JA)) {
4804 // In /fallback builds, run the main compilation even if the pch generation
4805 // fails, so that the main compilation's fallback to cl.exe runs.
4806 C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
4809 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
4812 if (Arg *A = Args.getLastArg(options::OPT_pg))
4813 if (Args.hasArg(options::OPT_fomit_frame_pointer))
4814 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
4815 << A->getAsString(Args);
4817 // Claim some arguments which clang supports automatically.
4819 // -fpch-preprocess is used with gcc to add a special marker in the output to
4820 // include the PCH file. Clang's PTH solution is completely transparent, so we
4821 // do not need to deal with it at all.
4822 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
4824 // Claim some arguments which clang doesn't support, but we don't
4825 // care to warn the user about.
4826 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
4827 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
4829 // Disable warnings for clang -E -emit-llvm foo.c
4830 Args.ClaimAllArgs(options::OPT_emit_llvm);
4833 Clang::Clang(const ToolChain &TC)
4834 // CAUTION! The first constructor argument ("clang") is not arbitrary,
4835 // as it is for other tools. Some operations on a Tool actually test
4836 // whether that tool is Clang based on the Tool's Name as a string.
4837 : Tool("clang", "clang frontend", TC, RF_Full) {}
4841 /// Add options related to the Objective-C runtime/ABI.
4843 /// Returns true if the runtime is non-fragile.
4844 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
4845 ArgStringList &cmdArgs,
4846 RewriteKind rewriteKind) const {
4847 // Look for the controlling runtime option.
4849 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
4850 options::OPT_fobjc_runtime_EQ);
4852 // Just forward -fobjc-runtime= to the frontend. This supercedes
4853 // options about fragility.
4855 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
4856 ObjCRuntime runtime;
4857 StringRef value = runtimeArg->getValue();
4858 if (runtime.tryParse(value)) {
4859 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
4862 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
4863 (runtime.getVersion() >= VersionTuple(2, 0)))
4864 if (!getToolChain().getTriple().isOSBinFormatELF()) {
4865 getToolChain().getDriver().Diag(
4866 diag::err_drv_gnustep_objc_runtime_incompatible_binary)
4867 << runtime.getVersion().getMajor();
4870 runtimeArg->render(args, cmdArgs);
4874 // Otherwise, we'll need the ABI "version". Version numbers are
4875 // slightly confusing for historical reasons:
4876 // 1 - Traditional "fragile" ABI
4877 // 2 - Non-fragile ABI, version 1
4878 // 3 - Non-fragile ABI, version 2
4879 unsigned objcABIVersion = 1;
4880 // If -fobjc-abi-version= is present, use that to set the version.
4881 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
4882 StringRef value = abiArg->getValue();
4885 else if (value == "2")
4887 else if (value == "3")
4890 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
4892 // Otherwise, determine if we are using the non-fragile ABI.
4893 bool nonFragileABIIsDefault =
4894 (rewriteKind == RK_NonFragile ||
4895 (rewriteKind == RK_None &&
4896 getToolChain().IsObjCNonFragileABIDefault()));
4897 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
4898 options::OPT_fno_objc_nonfragile_abi,
4899 nonFragileABIIsDefault)) {
4900 // Determine the non-fragile ABI version to use.
4901 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
4902 unsigned nonFragileABIVersion = 1;
4904 unsigned nonFragileABIVersion = 2;
4908 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
4909 StringRef value = abiArg->getValue();
4911 nonFragileABIVersion = 1;
4912 else if (value == "2")
4913 nonFragileABIVersion = 2;
4915 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4919 objcABIVersion = 1 + nonFragileABIVersion;
4925 // We don't actually care about the ABI version other than whether
4926 // it's non-fragile.
4927 bool isNonFragile = objcABIVersion != 1;
4929 // If we have no runtime argument, ask the toolchain for its default runtime.
4930 // However, the rewriter only really supports the Mac runtime, so assume that.
4931 ObjCRuntime runtime;
4933 switch (rewriteKind) {
4935 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4938 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
4941 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4946 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
4947 // On Darwin, make this use the default behavior for the toolchain.
4948 if (getToolChain().getTriple().isOSDarwin()) {
4949 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4951 // Otherwise, build for a generic macosx port.
4953 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4958 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
4959 // Legacy behaviour is to target the gnustep runtime if we are in
4960 // non-fragile mode or the GCC runtime in fragile mode.
4962 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
4964 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
4968 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
4972 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
4973 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
4981 bool Asynch = false;
4982 bool NoUnwindC = false;
4984 } // end anonymous namespace
4986 /// /EH controls whether to run destructor cleanups when exceptions are
4987 /// thrown. There are three modifiers:
4988 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
4989 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
4990 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
4991 /// - c: Assume that extern "C" functions are implicitly nounwind.
4992 /// The default is /EHs-c-, meaning cleanups are disabled.
4993 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
4996 std::vector<std::string> EHArgs =
4997 Args.getAllArgValues(options::OPT__SLASH_EH);
4998 for (auto EHVal : EHArgs) {
4999 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
5002 EH.Asynch = maybeConsumeDash(EHVal, I);
5007 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
5010 EH.Synch = maybeConsumeDash(EHVal, I);
5017 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
5021 // The /GX, /GX- flags are only processed if there are not /EH flags.
5022 // The default is that /GX is not specified.
5023 if (EHArgs.empty() &&
5024 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
5025 /*default=*/false)) {
5027 EH.NoUnwindC = true;
5033 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
5034 ArgStringList &CmdArgs,
5035 codegenoptions::DebugInfoKind *DebugInfoKind,
5036 bool *EmitCodeView) const {
5037 unsigned RTOptionID = options::OPT__SLASH_MT;
5039 if (Args.hasArg(options::OPT__SLASH_LDd))
5040 // The /LDd option implies /MTd. The dependent lib part can be overridden,
5041 // but defining _DEBUG is sticky.
5042 RTOptionID = options::OPT__SLASH_MTd;
5044 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
5045 RTOptionID = A->getOption().getID();
5047 StringRef FlagForCRT;
5048 switch (RTOptionID) {
5049 case options::OPT__SLASH_MD:
5050 if (Args.hasArg(options::OPT__SLASH_LDd))
5051 CmdArgs.push_back("-D_DEBUG");
5052 CmdArgs.push_back("-D_MT");
5053 CmdArgs.push_back("-D_DLL");
5054 FlagForCRT = "--dependent-lib=msvcrt";
5056 case options::OPT__SLASH_MDd:
5057 CmdArgs.push_back("-D_DEBUG");
5058 CmdArgs.push_back("-D_MT");
5059 CmdArgs.push_back("-D_DLL");
5060 FlagForCRT = "--dependent-lib=msvcrtd";
5062 case options::OPT__SLASH_MT:
5063 if (Args.hasArg(options::OPT__SLASH_LDd))
5064 CmdArgs.push_back("-D_DEBUG");
5065 CmdArgs.push_back("-D_MT");
5066 CmdArgs.push_back("-flto-visibility-public-std");
5067 FlagForCRT = "--dependent-lib=libcmt";
5069 case options::OPT__SLASH_MTd:
5070 CmdArgs.push_back("-D_DEBUG");
5071 CmdArgs.push_back("-D_MT");
5072 CmdArgs.push_back("-flto-visibility-public-std");
5073 FlagForCRT = "--dependent-lib=libcmtd";
5076 llvm_unreachable("Unexpected option ID.");
5079 if (Args.hasArg(options::OPT__SLASH_Zl)) {
5080 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
5082 CmdArgs.push_back(FlagForCRT.data());
5084 // This provides POSIX compatibility (maps 'open' to '_open'), which most
5085 // users want. The /Za flag to cl.exe turns this off, but it's not
5086 // implemented in clang.
5087 CmdArgs.push_back("--dependent-lib=oldnames");
5090 if (Arg *A = Args.getLastArg(options::OPT_show_includes))
5091 A->render(Args, CmdArgs);
5093 // This controls whether or not we emit RTTI data for polymorphic types.
5094 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
5096 CmdArgs.push_back("-fno-rtti-data");
5098 // This controls whether or not we emit stack-protector instrumentation.
5099 // In MSVC, Buffer Security Check (/GS) is on by default.
5100 if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
5101 /*default=*/true)) {
5102 CmdArgs.push_back("-stack-protector");
5103 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
5106 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
5107 if (Arg *DebugInfoArg =
5108 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
5109 options::OPT_gline_tables_only)) {
5110 *EmitCodeView = true;
5111 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
5112 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
5114 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
5115 CmdArgs.push_back("-gcodeview");
5117 *EmitCodeView = false;
5120 const Driver &D = getToolChain().getDriver();
5121 EHFlags EH = parseClangCLEHFlags(D, Args);
5122 if (EH.Synch || EH.Asynch) {
5123 if (types::isCXX(InputType))
5124 CmdArgs.push_back("-fcxx-exceptions");
5125 CmdArgs.push_back("-fexceptions");
5127 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5128 CmdArgs.push_back("-fexternc-nounwind");
5130 // /EP should expand to -E -P.
5131 if (Args.hasArg(options::OPT__SLASH_EP)) {
5132 CmdArgs.push_back("-E");
5133 CmdArgs.push_back("-P");
5136 unsigned VolatileOptionID;
5137 if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5138 getToolChain().getArch() == llvm::Triple::x86)
5139 VolatileOptionID = options::OPT__SLASH_volatile_ms;
5141 VolatileOptionID = options::OPT__SLASH_volatile_iso;
5143 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5144 VolatileOptionID = A->getOption().getID();
5146 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5147 CmdArgs.push_back("-fms-volatile");
5149 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5150 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5151 if (MostGeneralArg && BestCaseArg)
5152 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5153 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5155 if (MostGeneralArg) {
5156 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5157 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5158 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5160 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5161 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5162 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5163 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5164 << FirstConflict->getAsString(Args)
5165 << SecondConflict->getAsString(Args);
5168 CmdArgs.push_back("-fms-memptr-rep=single");
5169 else if (MultipleArg)
5170 CmdArgs.push_back("-fms-memptr-rep=multiple");
5172 CmdArgs.push_back("-fms-memptr-rep=virtual");
5175 // Parse the default calling convention options.
5177 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5178 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5179 options::OPT__SLASH_Gregcall)) {
5180 unsigned DCCOptId = CCArg->getOption().getID();
5181 const char *DCCFlag = nullptr;
5182 bool ArchSupported = true;
5183 llvm::Triple::ArchType Arch = getToolChain().getArch();
5185 case options::OPT__SLASH_Gd:
5186 DCCFlag = "-fdefault-calling-conv=cdecl";
5188 case options::OPT__SLASH_Gr:
5189 ArchSupported = Arch == llvm::Triple::x86;
5190 DCCFlag = "-fdefault-calling-conv=fastcall";
5192 case options::OPT__SLASH_Gz:
5193 ArchSupported = Arch == llvm::Triple::x86;
5194 DCCFlag = "-fdefault-calling-conv=stdcall";
5196 case options::OPT__SLASH_Gv:
5197 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5198 DCCFlag = "-fdefault-calling-conv=vectorcall";
5200 case options::OPT__SLASH_Gregcall:
5201 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5202 DCCFlag = "-fdefault-calling-conv=regcall";
5206 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5207 if (ArchSupported && DCCFlag)
5208 CmdArgs.push_back(DCCFlag);
5211 if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
5212 A->render(Args, CmdArgs);
5214 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5215 CmdArgs.push_back("-fdiagnostics-format");
5216 if (Args.hasArg(options::OPT__SLASH_fallback))
5217 CmdArgs.push_back("msvc-fallback");
5219 CmdArgs.push_back("msvc");
5222 if (Args.hasArg(options::OPT__SLASH_Guard) &&
5223 Args.getLastArgValue(options::OPT__SLASH_Guard).equals_lower("cf"))
5224 CmdArgs.push_back("-cfguard");
5227 visualstudio::Compiler *Clang::getCLFallback() const {
5229 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5230 return CLFallback.get();
5234 const char *Clang::getBaseInputName(const ArgList &Args,
5235 const InputInfo &Input) {
5236 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5239 const char *Clang::getBaseInputStem(const ArgList &Args,
5240 const InputInfoList &Inputs) {
5241 const char *Str = getBaseInputName(Args, Inputs[0]);
5243 if (const char *End = strrchr(Str, '.'))
5244 return Args.MakeArgString(std::string(Str, End));
5249 const char *Clang::getDependencyFileName(const ArgList &Args,
5250 const InputInfoList &Inputs) {
5251 // FIXME: Think about this more.
5254 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5255 std::string Str(OutputOpt->getValue());
5256 Res = Str.substr(0, Str.rfind('.'));
5258 Res = getBaseInputStem(Args, Inputs);
5260 return Args.MakeArgString(Res + ".d");
5265 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5266 ArgStringList &CmdArgs) const {
5269 const llvm::Triple &Triple = getToolChain().getTriple();
5270 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5272 CmdArgs.push_back("-target-abi");
5273 CmdArgs.push_back(ABIName.data());
5276 void ClangAs::AddX86TargetArgs(const ArgList &Args,
5277 ArgStringList &CmdArgs) const {
5278 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5279 StringRef Value = A->getValue();
5280 if (Value == "intel" || Value == "att") {
5281 CmdArgs.push_back("-mllvm");
5282 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5284 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
5285 << A->getOption().getName() << Value;
5290 void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
5291 const InputInfo &Output, const InputInfoList &Inputs,
5292 const ArgList &Args,
5293 const char *LinkingOutput) const {
5294 ArgStringList CmdArgs;
5296 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
5297 const InputInfo &Input = Inputs[0];
5299 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
5300 const std::string &TripleStr = Triple.getTriple();
5301 const auto &D = getToolChain().getDriver();
5303 // Don't warn about "clang -w -c foo.s"
5304 Args.ClaimAllArgs(options::OPT_w);
5305 // and "clang -emit-llvm -c foo.s"
5306 Args.ClaimAllArgs(options::OPT_emit_llvm);
5308 claimNoWarnArgs(Args);
5310 // Invoke ourselves in -cc1as mode.
5312 // FIXME: Implement custom jobs for internal actions.
5313 CmdArgs.push_back("-cc1as");
5315 // Add the "effective" target triple.
5316 CmdArgs.push_back("-triple");
5317 CmdArgs.push_back(Args.MakeArgString(TripleStr));
5319 // Set the output mode, we currently only expect to be used as a real
5321 CmdArgs.push_back("-filetype");
5322 CmdArgs.push_back("obj");
5324 // Set the main file name, so that debug info works even with
5325 // -save-temps or preprocessed assembly.
5326 CmdArgs.push_back("-main-file-name");
5327 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
5329 // Add the target cpu
5330 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
5332 CmdArgs.push_back("-target-cpu");
5333 CmdArgs.push_back(Args.MakeArgString(CPU));
5336 // Add the target features
5337 getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
5339 // Ignore explicit -force_cpusubtype_ALL option.
5340 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
5342 // Pass along any -I options so we get proper .include search paths.
5343 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
5345 // Determine the original source input.
5346 const Action *SourceAction = &JA;
5347 while (SourceAction->getKind() != Action::InputClass) {
5348 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
5349 SourceAction = SourceAction->getInputs()[0];
5352 // Forward -g and handle debug info related flags, assuming we are dealing
5353 // with an actual assembly file.
5354 bool WantDebug = false;
5355 unsigned DwarfVersion = 0;
5356 Args.ClaimAllArgs(options::OPT_g_Group);
5357 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
5358 WantDebug = !A->getOption().matches(options::OPT_g0) &&
5359 !A->getOption().matches(options::OPT_ggdb0);
5361 DwarfVersion = DwarfVersionNum(A->getSpelling());
5363 if (DwarfVersion == 0)
5364 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
5366 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
5368 if (SourceAction->getType() == types::TY_Asm ||
5369 SourceAction->getType() == types::TY_PP_Asm) {
5370 // You might think that it would be ok to set DebugInfoKind outside of
5371 // the guard for source type, however there is a test which asserts
5372 // that some assembler invocation receives no -debug-info-kind,
5373 // and it's not clear whether that test is just overly restrictive.
5374 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
5375 : codegenoptions::NoDebugInfo);
5376 // Add the -fdebug-compilation-dir flag if needed.
5377 addDebugCompDirArg(Args, CmdArgs);
5379 addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
5381 // Set the AT_producer to the clang version when using the integrated
5382 // assembler on assembly source files.
5383 CmdArgs.push_back("-dwarf-debug-producer");
5384 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
5386 // And pass along -I options
5387 Args.AddAllArgs(CmdArgs, options::OPT_I);
5389 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
5390 llvm::DebuggerKind::Default);
5391 RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
5394 // Handle -fPIC et al -- the relocation-model affects the assembler
5395 // for some targets.
5396 llvm::Reloc::Model RelocationModel;
5399 std::tie(RelocationModel, PICLevel, IsPIE) =
5400 ParsePICArgs(getToolChain(), Args);
5402 const char *RMName = RelocationModelName(RelocationModel);
5404 CmdArgs.push_back("-mrelocation-model");
5405 CmdArgs.push_back(RMName);
5408 // Optionally embed the -cc1as level arguments into the debug info, for build
5410 if (getToolChain().UseDwarfDebugFlags()) {
5411 ArgStringList OriginalArgs;
5412 for (const auto &Arg : Args)
5413 Arg->render(Args, OriginalArgs);
5415 SmallString<256> Flags;
5416 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5418 for (const char *OriginalArg : OriginalArgs) {
5419 SmallString<128> EscapedArg;
5420 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5422 Flags += EscapedArg;
5424 CmdArgs.push_back("-dwarf-debug-flags");
5425 CmdArgs.push_back(Args.MakeArgString(Flags));
5428 // FIXME: Add -static support, once we have it.
5430 // Add target specific flags.
5431 switch (getToolChain().getArch()) {
5435 case llvm::Triple::mips:
5436 case llvm::Triple::mipsel:
5437 case llvm::Triple::mips64:
5438 case llvm::Triple::mips64el:
5439 AddMIPSTargetArgs(Args, CmdArgs);
5442 case llvm::Triple::x86:
5443 case llvm::Triple::x86_64:
5444 AddX86TargetArgs(Args, CmdArgs);
5447 case llvm::Triple::arm:
5448 case llvm::Triple::armeb:
5449 case llvm::Triple::thumb:
5450 case llvm::Triple::thumbeb:
5451 // This isn't in AddARMTargetArgs because we want to do this for assembly
5453 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
5454 options::OPT_mno_default_build_attributes, true)) {
5455 CmdArgs.push_back("-mllvm");
5456 CmdArgs.push_back("-arm-add-build-attributes");
5461 // Consume all the warning flags. Usually this would be handled more
5462 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
5463 // doesn't handle that so rather than warning about unused flags that are
5464 // actually used, we'll lie by omission instead.
5465 // FIXME: Stop lying and consume only the appropriate driver flags
5466 Args.ClaimAllArgs(options::OPT_W_Group);
5468 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
5469 getToolChain().getDriver());
5471 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
5473 assert(Output.isFilename() && "Unexpected lipo output.");
5474 CmdArgs.push_back("-o");
5475 CmdArgs.push_back(Output.getFilename());
5477 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
5478 getToolChain().getTriple().isOSLinux()) {
5479 CmdArgs.push_back("-split-dwarf-file");
5480 CmdArgs.push_back(SplitDebugName(Args, Input));
5483 assert(Input.isFilename() && "Invalid input.");
5484 CmdArgs.push_back(Input.getFilename());
5486 const char *Exec = getToolChain().getDriver().getClangProgramPath();
5487 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5490 // Begin OffloadBundler
5492 void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
5493 const InputInfo &Output,
5494 const InputInfoList &Inputs,
5495 const llvm::opt::ArgList &TCArgs,
5496 const char *LinkingOutput) const {
5497 // The version with only one output is expected to refer to a bundling job.
5498 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
5500 // The bundling command looks like this:
5501 // clang-offload-bundler -type=bc
5502 // -targets=host-triple,openmp-triple1,openmp-triple2
5503 // -outputs=input_file
5504 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5506 ArgStringList CmdArgs;
5509 CmdArgs.push_back(TCArgs.MakeArgString(
5510 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
5512 assert(JA.getInputs().size() == Inputs.size() &&
5513 "Not have inputs for all dependence actions??");
5516 SmallString<128> Triples;
5517 Triples += "-targets=";
5518 for (unsigned I = 0; I < Inputs.size(); ++I) {
5522 // Find ToolChain for this input.
5523 Action::OffloadKind CurKind = Action::OFK_Host;
5524 const ToolChain *CurTC = &getToolChain();
5525 const Action *CurDep = JA.getInputs()[I];
5527 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
5529 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
5530 assert(CurTC == nullptr && "Expected one dependence!");
5531 CurKind = A->getOffloadingDeviceKind();
5535 Triples += Action::GetOffloadKindName(CurKind);
5537 Triples += CurTC->getTriple().normalize();
5538 if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
5540 Triples += CurDep->getOffloadingArch();
5543 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5545 // Get bundled file command.
5547 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
5549 // Get unbundled files command.
5550 SmallString<128> UB;
5552 for (unsigned I = 0; I < Inputs.size(); ++I) {
5556 // Find ToolChain for this input.
5557 const ToolChain *CurTC = &getToolChain();
5558 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
5560 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
5561 assert(CurTC == nullptr && "Expected one dependence!");
5565 UB += CurTC->getInputFilename(Inputs[I]);
5567 CmdArgs.push_back(TCArgs.MakeArgString(UB));
5569 // All the inputs are encoded as commands.
5570 C.addCommand(llvm::make_unique<Command>(
5572 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5576 void OffloadBundler::ConstructJobMultipleOutputs(
5577 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
5578 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
5579 const char *LinkingOutput) const {
5580 // The version with multiple outputs is expected to refer to a unbundling job.
5581 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
5583 // The unbundling command looks like this:
5584 // clang-offload-bundler -type=bc
5585 // -targets=host-triple,openmp-triple1,openmp-triple2
5586 // -inputs=input_file
5587 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5590 ArgStringList CmdArgs;
5592 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
5593 InputInfo Input = Inputs.front();
5596 CmdArgs.push_back(TCArgs.MakeArgString(
5597 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
5600 SmallString<128> Triples;
5601 Triples += "-targets=";
5602 auto DepInfo = UA.getDependentActionsInfo();
5603 for (unsigned I = 0; I < DepInfo.size(); ++I) {
5607 auto &Dep = DepInfo[I];
5608 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
5610 Triples += Dep.DependentToolChain->getTriple().normalize();
5611 if (Dep.DependentOffloadKind == Action::OFK_HIP &&
5612 !Dep.DependentBoundArch.empty()) {
5614 Triples += Dep.DependentBoundArch;
5618 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5620 // Get bundled file command.
5622 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
5624 // Get unbundled files command.
5625 SmallString<128> UB;
5627 for (unsigned I = 0; I < Outputs.size(); ++I) {
5630 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
5632 CmdArgs.push_back(TCArgs.MakeArgString(UB));
5633 CmdArgs.push_back("-unbundle");
5635 // All the inputs are encoded as commands.
5636 C.addCommand(llvm::make_unique<Command>(
5638 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),