1 //===-- Clang.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
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"
25 #include "clang/Basic/CharInfo.h"
26 #include "clang/Basic/CodeGenOptions.h"
27 #include "clang/Basic/LangOptions.h"
28 #include "clang/Basic/ObjCRuntime.h"
29 #include "clang/Basic/Version.h"
30 #include "clang/Driver/Distro.h"
31 #include "clang/Driver/DriverDiagnostic.h"
32 #include "clang/Driver/Options.h"
33 #include "clang/Driver/SanitizerArgs.h"
34 #include "clang/Driver/XRayArgs.h"
35 #include "llvm/ADT/StringExtras.h"
36 #include "llvm/Config/llvm-config.h"
37 #include "llvm/Option/ArgList.h"
38 #include "llvm/Support/CodeGen.h"
39 #include "llvm/Support/Compiler.h"
40 #include "llvm/Support/Compression.h"
41 #include "llvm/Support/FileSystem.h"
42 #include "llvm/Support/Path.h"
43 #include "llvm/Support/Process.h"
44 #include "llvm/Support/TargetParser.h"
45 #include "llvm/Support/YAMLParser.h"
48 #include <unistd.h> // For getuid().
51 using namespace clang::driver;
52 using namespace clang::driver::tools;
53 using namespace clang;
54 using namespace llvm::opt;
56 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
58 Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
59 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
60 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
61 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
62 << A->getBaseArg().getAsString(Args)
63 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
68 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
69 // In gcc, only ARM checks this, but it seems reasonable to check universally.
70 if (Args.hasArg(options::OPT_static))
72 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
73 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
77 // Add backslashes to escape spaces and other backslashes.
78 // This is used for the space-separated argument list specified with
79 // the -dwarf-debug-flags option.
80 static void EscapeSpacesAndBackslashes(const char *Arg,
81 SmallVectorImpl<char> &Res) {
95 // Quote target names for inclusion in GNU Make dependency files.
96 // Only the characters '$', '#', ' ', '\t' are quoted.
97 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
98 for (unsigned i = 0, e = Target.size(); i != e; ++i) {
102 // Escape the preceding backslashes
103 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
106 // Escape the space/tab
119 Res.push_back(Target[i]);
123 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
124 /// offloading tool chain that is associated with the current action \a JA.
126 forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
127 const ToolChain &RegularToolChain,
128 llvm::function_ref<void(const ToolChain &)> Work) {
129 // Apply Work on the current/regular tool chain.
130 Work(RegularToolChain);
132 // Apply Work on all the offloading tool chains associated with the current
134 if (JA.isHostOffloading(Action::OFK_Cuda))
135 Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
136 else if (JA.isDeviceOffloading(Action::OFK_Cuda))
137 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
138 else if (JA.isHostOffloading(Action::OFK_HIP))
139 Work(*C.getSingleOffloadToolChain<Action::OFK_HIP>());
140 else if (JA.isDeviceOffloading(Action::OFK_HIP))
141 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
143 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
144 auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
145 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
147 } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
148 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
151 // TODO: Add support for other offloading programming models here.
155 /// This is a helper function for validating the optional refinement step
156 /// parameter in reciprocal argument strings. Return false if there is an error
157 /// parsing the refinement step. Otherwise, return true and set the Position
158 /// of the refinement step in the input string.
159 static bool getRefinementStep(StringRef In, const Driver &D,
160 const Arg &A, size_t &Position) {
161 const char RefinementStepToken = ':';
162 Position = In.find(RefinementStepToken);
163 if (Position != StringRef::npos) {
164 StringRef Option = A.getOption().getName();
165 StringRef RefStep = In.substr(Position + 1);
166 // Allow exactly one numeric character for the additional refinement
167 // step parameter. This is reasonable for all currently-supported
168 // operations and architectures because we would expect that a larger value
169 // of refinement steps would cause the estimate "optimization" to
170 // under-perform the native operation. Also, if the estimate does not
171 // converge quickly, it probably will not ever converge, so further
172 // refinement steps will not produce a better answer.
173 if (RefStep.size() != 1) {
174 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
177 char RefStepChar = RefStep[0];
178 if (RefStepChar < '0' || RefStepChar > '9') {
179 D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
186 /// The -mrecip flag requires processing of many optional parameters.
187 static void ParseMRecip(const Driver &D, const ArgList &Args,
188 ArgStringList &OutStrings) {
189 StringRef DisabledPrefixIn = "!";
190 StringRef DisabledPrefixOut = "!";
191 StringRef EnabledPrefixOut = "";
192 StringRef Out = "-mrecip=";
194 Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
198 unsigned NumOptions = A->getNumValues();
199 if (NumOptions == 0) {
200 // No option is the same as "all".
201 OutStrings.push_back(Args.MakeArgString(Out + "all"));
205 // Pass through "all", "none", or "default" with an optional refinement step.
206 if (NumOptions == 1) {
207 StringRef Val = A->getValue(0);
209 if (!getRefinementStep(Val, D, *A, RefStepLoc))
211 StringRef ValBase = Val.slice(0, RefStepLoc);
212 if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
213 OutStrings.push_back(Args.MakeArgString(Out + Val));
218 // Each reciprocal type may be enabled or disabled individually.
219 // Check each input value for validity, concatenate them all back together,
222 llvm::StringMap<bool> OptionStrings;
223 OptionStrings.insert(std::make_pair("divd", false));
224 OptionStrings.insert(std::make_pair("divf", false));
225 OptionStrings.insert(std::make_pair("vec-divd", false));
226 OptionStrings.insert(std::make_pair("vec-divf", false));
227 OptionStrings.insert(std::make_pair("sqrtd", false));
228 OptionStrings.insert(std::make_pair("sqrtf", false));
229 OptionStrings.insert(std::make_pair("vec-sqrtd", false));
230 OptionStrings.insert(std::make_pair("vec-sqrtf", false));
232 for (unsigned i = 0; i != NumOptions; ++i) {
233 StringRef Val = A->getValue(i);
235 bool IsDisabled = Val.startswith(DisabledPrefixIn);
236 // Ignore the disablement token for string matching.
241 if (!getRefinementStep(Val, D, *A, RefStep))
244 StringRef ValBase = Val.slice(0, RefStep);
245 llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
246 if (OptionIter == OptionStrings.end()) {
247 // Try again specifying float suffix.
248 OptionIter = OptionStrings.find(ValBase.str() + 'f');
249 if (OptionIter == OptionStrings.end()) {
250 // The input name did not match any known option string.
251 D.Diag(diag::err_drv_unknown_argument) << Val;
254 // The option was specified without a float or double suffix.
255 // Make sure that the double entry was not already specified.
256 // The float entry will be checked below.
257 if (OptionStrings[ValBase.str() + 'd']) {
258 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
263 if (OptionIter->second == true) {
264 // Duplicate option specified.
265 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
269 // Mark the matched option as found. Do not allow duplicate specifiers.
270 OptionIter->second = true;
272 // If the precision was not specified, also mark the double entry as found.
273 if (ValBase.back() != 'f' && ValBase.back() != 'd')
274 OptionStrings[ValBase.str() + 'd'] = true;
276 // Build the output string.
277 StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
278 Out = Args.MakeArgString(Out + Prefix + Val);
279 if (i != NumOptions - 1)
280 Out = Args.MakeArgString(Out + ",");
283 OutStrings.push_back(Args.MakeArgString(Out));
286 /// The -mprefer-vector-width option accepts either a positive integer
287 /// or the string "none".
288 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
289 ArgStringList &CmdArgs) {
290 Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
294 StringRef Value = A->getValue();
295 if (Value == "none") {
296 CmdArgs.push_back("-mprefer-vector-width=none");
299 if (Value.getAsInteger(10, Width)) {
300 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
303 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
307 static void getWebAssemblyTargetFeatures(const ArgList &Args,
308 std::vector<StringRef> &Features) {
309 handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
312 static void getTargetFeatures(const Driver &D, const llvm::Triple &Triple,
313 const ArgList &Args, ArgStringList &CmdArgs,
314 bool ForAS, bool IsAux = false) {
315 std::vector<StringRef> Features;
316 switch (Triple.getArch()) {
319 case llvm::Triple::mips:
320 case llvm::Triple::mipsel:
321 case llvm::Triple::mips64:
322 case llvm::Triple::mips64el:
323 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
326 case llvm::Triple::arm:
327 case llvm::Triple::armeb:
328 case llvm::Triple::thumb:
329 case llvm::Triple::thumbeb:
330 arm::getARMTargetFeatures(D, Triple, Args, CmdArgs, Features, ForAS);
333 case llvm::Triple::ppc:
334 case llvm::Triple::ppc64:
335 case llvm::Triple::ppc64le:
336 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
338 case llvm::Triple::riscv32:
339 case llvm::Triple::riscv64:
340 riscv::getRISCVTargetFeatures(D, Triple, Args, Features);
342 case llvm::Triple::systemz:
343 systemz::getSystemZTargetFeatures(D, Args, Features);
345 case llvm::Triple::aarch64:
346 case llvm::Triple::aarch64_32:
347 case llvm::Triple::aarch64_be:
348 aarch64::getAArch64TargetFeatures(D, Triple, Args, Features);
350 case llvm::Triple::x86:
351 case llvm::Triple::x86_64:
352 x86::getX86TargetFeatures(D, Triple, Args, Features);
354 case llvm::Triple::hexagon:
355 hexagon::getHexagonTargetFeatures(D, Args, Features);
357 case llvm::Triple::wasm32:
358 case llvm::Triple::wasm64:
359 getWebAssemblyTargetFeatures(Args, Features);
361 case llvm::Triple::sparc:
362 case llvm::Triple::sparcel:
363 case llvm::Triple::sparcv9:
364 sparc::getSparcTargetFeatures(D, Args, Features);
366 case llvm::Triple::r600:
367 case llvm::Triple::amdgcn:
368 amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
370 case llvm::Triple::msp430:
371 msp430::getMSP430TargetFeatures(D, Args, Features);
373 case llvm::Triple::ve:
374 ve::getVETargetFeatures(D, Args, Features);
377 for (auto Feature : unifyTargetFeatures(Features)) {
378 CmdArgs.push_back(IsAux ? "-aux-target-feature" : "-target-feature");
379 CmdArgs.push_back(Feature.data());
384 shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
385 const llvm::Triple &Triple) {
386 // We use the zero-cost exception tables for Objective-C if the non-fragile
387 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
389 if (runtime.isNonFragile())
392 if (!Triple.isMacOSX())
395 return (!Triple.isMacOSXVersionLT(10, 5) &&
396 (Triple.getArch() == llvm::Triple::x86_64 ||
397 Triple.getArch() == llvm::Triple::arm));
400 /// Adds exception related arguments to the driver command arguments. There's a
401 /// master flag, -fexceptions and also language specific flags to enable/disable
402 /// C++ and Objective-C exceptions. This makes it possible to for example
403 /// disable C++ exceptions but enable Objective-C exceptions.
404 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
405 const ToolChain &TC, bool KernelOrKext,
406 const ObjCRuntime &objcRuntime,
407 ArgStringList &CmdArgs) {
408 const llvm::Triple &Triple = TC.getTriple();
411 // -mkernel and -fapple-kext imply no exceptions, so claim exception related
412 // arguments now to avoid warnings about unused arguments.
413 Args.ClaimAllArgs(options::OPT_fexceptions);
414 Args.ClaimAllArgs(options::OPT_fno_exceptions);
415 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
416 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
417 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
418 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
422 // See if the user explicitly enabled exceptions.
423 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
426 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
427 // is not necessarily sensible, but follows GCC.
428 if (types::isObjC(InputType) &&
429 Args.hasFlag(options::OPT_fobjc_exceptions,
430 options::OPT_fno_objc_exceptions, true)) {
431 CmdArgs.push_back("-fobjc-exceptions");
433 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
436 if (types::isCXX(InputType)) {
437 // Disable C++ EH by default on XCore and PS4.
438 bool CXXExceptionsEnabled =
439 Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
440 Arg *ExceptionArg = Args.getLastArg(
441 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
442 options::OPT_fexceptions, options::OPT_fno_exceptions);
444 CXXExceptionsEnabled =
445 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
446 ExceptionArg->getOption().matches(options::OPT_fexceptions);
448 if (CXXExceptionsEnabled) {
449 CmdArgs.push_back("-fcxx-exceptions");
455 // OPT_fignore_exceptions means exception could still be thrown,
456 // but no clean up or catch would happen in current module.
457 // So we do not set EH to false.
458 Args.AddLastArg(CmdArgs, options::OPT_fignore_exceptions);
461 CmdArgs.push_back("-fexceptions");
464 static bool ShouldEnableAutolink(const ArgList &Args, const ToolChain &TC,
465 const JobAction &JA) {
467 if (TC.getTriple().isOSDarwin()) {
468 // The native darwin assembler doesn't support the linker_option directives,
469 // so we disable them if we think the .s file will be passed to it.
470 Default = TC.useIntegratedAs();
472 // The linker_option directives are intended for host compilation.
473 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
474 JA.isDeviceOffloading(Action::OFK_HIP))
476 return Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
480 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
481 const ToolChain &TC) {
482 bool UseDwarfDirectory =
483 Args.hasFlag(options::OPT_fdwarf_directory_asm,
484 options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
485 return !UseDwarfDirectory;
488 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
489 // to the corresponding DebugInfoKind.
490 static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
491 assert(A.getOption().matches(options::OPT_gN_Group) &&
492 "Not a -g option that specifies a debug-info level");
493 if (A.getOption().matches(options::OPT_g0) ||
494 A.getOption().matches(options::OPT_ggdb0))
495 return codegenoptions::NoDebugInfo;
496 if (A.getOption().matches(options::OPT_gline_tables_only) ||
497 A.getOption().matches(options::OPT_ggdb1))
498 return codegenoptions::DebugLineTablesOnly;
499 if (A.getOption().matches(options::OPT_gline_directives_only))
500 return codegenoptions::DebugDirectivesOnly;
501 return codegenoptions::LimitedDebugInfo;
504 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
505 switch (Triple.getArch()){
508 case llvm::Triple::arm:
509 case llvm::Triple::thumb:
510 // ARM Darwin targets require a frame pointer to be always present to aid
511 // offline debugging via backtraces.
512 return Triple.isOSDarwin();
516 static bool useFramePointerForTargetByDefault(const ArgList &Args,
517 const llvm::Triple &Triple) {
518 if (Args.hasArg(options::OPT_pg) && !Args.hasArg(options::OPT_mfentry))
521 switch (Triple.getArch()) {
522 case llvm::Triple::xcore:
523 case llvm::Triple::wasm32:
524 case llvm::Triple::wasm64:
525 case llvm::Triple::msp430:
526 // XCore never wants frame pointers, regardless of OS.
527 // WebAssembly never wants frame pointers.
529 case llvm::Triple::ppc:
530 case llvm::Triple::ppc64:
531 case llvm::Triple::ppc64le:
532 case llvm::Triple::riscv32:
533 case llvm::Triple::riscv64:
534 case llvm::Triple::amdgcn:
535 case llvm::Triple::r600:
536 return !areOptimizationsEnabled(Args);
541 if (Triple.isOSNetBSD()) {
542 return !areOptimizationsEnabled(Args);
545 if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
547 switch (Triple.getArch()) {
548 // Don't use a frame pointer on linux if optimizing for certain targets.
549 case llvm::Triple::arm:
550 case llvm::Triple::armeb:
551 case llvm::Triple::thumb:
552 case llvm::Triple::thumbeb:
553 if (Triple.isAndroid())
556 case llvm::Triple::mips64:
557 case llvm::Triple::mips64el:
558 case llvm::Triple::mips:
559 case llvm::Triple::mipsel:
560 case llvm::Triple::systemz:
561 case llvm::Triple::x86:
562 case llvm::Triple::x86_64:
563 return !areOptimizationsEnabled(Args);
569 if (Triple.isOSWindows()) {
570 switch (Triple.getArch()) {
571 case llvm::Triple::x86:
572 return !areOptimizationsEnabled(Args);
573 case llvm::Triple::x86_64:
574 return Triple.isOSBinFormatMachO();
575 case llvm::Triple::arm:
576 case llvm::Triple::thumb:
577 // Windows on ARM builds with FPO disabled to aid fast stack walking
580 // All other supported Windows ISAs use xdata unwind information, so frame
581 // pointers are not generally useful.
589 static CodeGenOptions::FramePointerKind
590 getFramePointerKind(const ArgList &Args, const llvm::Triple &Triple) {
593 // 00) leaf retained, non-leaf retained
594 // 01) leaf retained, non-leaf omitted (this is invalid)
595 // 10) leaf omitted, non-leaf retained
596 // (what -momit-leaf-frame-pointer was designed for)
597 // 11) leaf omitted, non-leaf omitted
599 // "omit" options taking precedence over "no-omit" options is the only way
600 // to make 3 valid states representable
601 Arg *A = Args.getLastArg(options::OPT_fomit_frame_pointer,
602 options::OPT_fno_omit_frame_pointer);
603 bool OmitFP = A && A->getOption().matches(options::OPT_fomit_frame_pointer);
605 A && A->getOption().matches(options::OPT_fno_omit_frame_pointer);
606 bool KeepLeaf = Args.hasFlag(options::OPT_momit_leaf_frame_pointer,
607 options::OPT_mno_omit_leaf_frame_pointer,
608 Triple.isAArch64() || Triple.isPS4CPU());
609 if (NoOmitFP || mustUseNonLeafFramePointerForTarget(Triple) ||
610 (!OmitFP && useFramePointerForTargetByDefault(Args, Triple))) {
612 return CodeGenOptions::FramePointerKind::NonLeaf;
613 return CodeGenOptions::FramePointerKind::All;
615 return CodeGenOptions::FramePointerKind::None;
618 /// Add a CC1 option to specify the debug compilation directory.
619 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs,
620 const llvm::vfs::FileSystem &VFS) {
621 if (Arg *A = Args.getLastArg(options::OPT_fdebug_compilation_dir)) {
622 CmdArgs.push_back("-fdebug-compilation-dir");
623 CmdArgs.push_back(A->getValue());
624 } else if (llvm::ErrorOr<std::string> CWD =
625 VFS.getCurrentWorkingDirectory()) {
626 CmdArgs.push_back("-fdebug-compilation-dir");
627 CmdArgs.push_back(Args.MakeArgString(*CWD));
631 /// Add a CC1 and CC1AS option to specify the debug file path prefix map.
632 static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
633 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
634 options::OPT_fdebug_prefix_map_EQ)) {
635 StringRef Map = A->getValue();
636 if (Map.find('=') == StringRef::npos)
637 D.Diag(diag::err_drv_invalid_argument_to_option)
638 << Map << A->getOption().getName();
640 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
645 /// Add a CC1 and CC1AS option to specify the macro file path prefix map.
646 static void addMacroPrefixMapArg(const Driver &D, const ArgList &Args,
647 ArgStringList &CmdArgs) {
648 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
649 options::OPT_fmacro_prefix_map_EQ)) {
650 StringRef Map = A->getValue();
651 if (Map.find('=') == StringRef::npos)
652 D.Diag(diag::err_drv_invalid_argument_to_option)
653 << Map << A->getOption().getName();
655 CmdArgs.push_back(Args.MakeArgString("-fmacro-prefix-map=" + Map));
660 /// Vectorize at all optimization levels greater than 1 except for -Oz.
661 /// For -Oz the loop vectorizer is disabled, while the slp vectorizer is
663 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
664 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
665 if (A->getOption().matches(options::OPT_O4) ||
666 A->getOption().matches(options::OPT_Ofast))
669 if (A->getOption().matches(options::OPT_O0))
672 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
675 StringRef S(A->getValue());
679 // Don't vectorize -Oz, unless it's the slp vectorizer.
683 unsigned OptLevel = 0;
684 if (S.getAsInteger(10, OptLevel))
693 /// Add -x lang to \p CmdArgs for \p Input.
694 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
695 ArgStringList &CmdArgs) {
696 // When using -verify-pch, we don't want to provide the type
697 // 'precompiled-header' if it was inferred from the file extension
698 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
701 CmdArgs.push_back("-x");
702 if (Args.hasArg(options::OPT_rewrite_objc))
703 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
705 // Map the driver type to the frontend type. This is mostly an identity
706 // mapping, except that the distinction between module interface units
707 // and other source files does not exist at the frontend layer.
708 const char *ClangType;
709 switch (Input.getType()) {
710 case types::TY_CXXModule:
713 case types::TY_PP_CXXModule:
714 ClangType = "c++-cpp-output";
717 ClangType = types::getTypeName(Input.getType());
720 CmdArgs.push_back(ClangType);
724 static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C,
725 const Driver &D, const InputInfo &Output,
727 ArgStringList &CmdArgs) {
729 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
730 options::OPT_fprofile_generate_EQ,
731 options::OPT_fno_profile_generate);
732 if (PGOGenerateArg &&
733 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
734 PGOGenerateArg = nullptr;
736 auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
737 options::OPT_fcs_profile_generate_EQ,
738 options::OPT_fno_profile_generate);
739 if (CSPGOGenerateArg &&
740 CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
741 CSPGOGenerateArg = nullptr;
743 auto *ProfileGenerateArg = Args.getLastArg(
744 options::OPT_fprofile_instr_generate,
745 options::OPT_fprofile_instr_generate_EQ,
746 options::OPT_fno_profile_instr_generate);
747 if (ProfileGenerateArg &&
748 ProfileGenerateArg->getOption().matches(
749 options::OPT_fno_profile_instr_generate))
750 ProfileGenerateArg = nullptr;
752 if (PGOGenerateArg && ProfileGenerateArg)
753 D.Diag(diag::err_drv_argument_not_allowed_with)
754 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
756 auto *ProfileUseArg = getLastProfileUseArg(Args);
758 if (PGOGenerateArg && ProfileUseArg)
759 D.Diag(diag::err_drv_argument_not_allowed_with)
760 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
762 if (ProfileGenerateArg && ProfileUseArg)
763 D.Diag(diag::err_drv_argument_not_allowed_with)
764 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
766 if (CSPGOGenerateArg && PGOGenerateArg)
767 D.Diag(diag::err_drv_argument_not_allowed_with)
768 << CSPGOGenerateArg->getSpelling() << PGOGenerateArg->getSpelling();
770 if (ProfileGenerateArg) {
771 if (ProfileGenerateArg->getOption().matches(
772 options::OPT_fprofile_instr_generate_EQ))
773 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
774 ProfileGenerateArg->getValue()));
775 // The default is to use Clang Instrumentation.
776 CmdArgs.push_back("-fprofile-instrument=clang");
777 if (TC.getTriple().isWindowsMSVCEnvironment()) {
778 // Add dependent lib for clang_rt.profile
779 CmdArgs.push_back(Args.MakeArgString(
780 "--dependent-lib=" + TC.getCompilerRTBasename(Args, "profile")));
784 Arg *PGOGenArg = nullptr;
785 if (PGOGenerateArg) {
786 assert(!CSPGOGenerateArg);
787 PGOGenArg = PGOGenerateArg;
788 CmdArgs.push_back("-fprofile-instrument=llvm");
790 if (CSPGOGenerateArg) {
791 assert(!PGOGenerateArg);
792 PGOGenArg = CSPGOGenerateArg;
793 CmdArgs.push_back("-fprofile-instrument=csllvm");
796 if (TC.getTriple().isWindowsMSVCEnvironment()) {
797 // Add dependent lib for clang_rt.profile
798 CmdArgs.push_back(Args.MakeArgString(
799 "--dependent-lib=" + TC.getCompilerRTBasename(Args, "profile")));
801 if (PGOGenArg->getOption().matches(
802 PGOGenerateArg ? options::OPT_fprofile_generate_EQ
803 : options::OPT_fcs_profile_generate_EQ)) {
804 SmallString<128> Path(PGOGenArg->getValue());
805 llvm::sys::path::append(Path, "default_%m.profraw");
807 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
812 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
813 CmdArgs.push_back(Args.MakeArgString(
814 Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
815 else if ((ProfileUseArg->getOption().matches(
816 options::OPT_fprofile_use_EQ) ||
817 ProfileUseArg->getOption().matches(
818 options::OPT_fprofile_instr_use))) {
819 SmallString<128> Path(
820 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
821 if (Path.empty() || llvm::sys::fs::is_directory(Path))
822 llvm::sys::path::append(Path, "default.profdata");
824 Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
828 bool EmitCovNotes = Args.hasFlag(options::OPT_ftest_coverage,
829 options::OPT_fno_test_coverage, false) ||
830 Args.hasArg(options::OPT_coverage);
831 bool EmitCovData = TC.needsGCovInstrumentation(Args);
833 CmdArgs.push_back("-femit-coverage-notes");
835 CmdArgs.push_back("-femit-coverage-data");
837 if (Args.hasFlag(options::OPT_fcoverage_mapping,
838 options::OPT_fno_coverage_mapping, false)) {
839 if (!ProfileGenerateArg)
840 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
841 << "-fcoverage-mapping"
842 << "-fprofile-instr-generate";
844 CmdArgs.push_back("-fcoverage-mapping");
847 if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {
848 auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
849 if (!Args.hasArg(options::OPT_coverage))
850 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
851 << "-fprofile-exclude-files="
854 StringRef v = Arg->getValue();
856 Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));
859 if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {
860 auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
861 if (!Args.hasArg(options::OPT_coverage))
862 D.Diag(clang::diag::err_drv_argument_only_allowed_with)
863 << "-fprofile-filter-files="
866 StringRef v = Arg->getValue();
867 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));
870 // Leave -fprofile-dir= an unused argument unless .gcda emission is
871 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
872 // the flag used. There is no -fno-profile-dir, so the user has no
873 // targeted way to suppress the warning.
874 Arg *FProfileDir = nullptr;
875 if (Args.hasArg(options::OPT_fprofile_arcs) ||
876 Args.hasArg(options::OPT_coverage))
877 FProfileDir = Args.getLastArg(options::OPT_fprofile_dir);
879 // Put the .gcno and .gcda files (if needed) next to the object file or
880 // bitcode file in the case of LTO.
881 // FIXME: There should be a simpler way to find the object file for this
882 // input, and this code probably does the wrong thing for commands that
883 // compile and link all at once.
884 if ((Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) &&
885 (EmitCovNotes || EmitCovData) && Output.isFilename()) {
886 SmallString<128> OutputFilename;
887 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT__SLASH_Fo))
888 OutputFilename = FinalOutput->getValue();
889 else if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
890 OutputFilename = FinalOutput->getValue();
892 OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
893 SmallString<128> CoverageFilename = OutputFilename;
894 if (llvm::sys::path::is_relative(CoverageFilename))
895 (void)D.getVFS().makeAbsolute(CoverageFilename);
896 llvm::sys::path::replace_extension(CoverageFilename, "gcno");
898 CmdArgs.push_back("-coverage-notes-file");
899 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
903 CoverageFilename = FProfileDir->getValue();
904 llvm::sys::path::append(CoverageFilename, OutputFilename);
906 llvm::sys::path::replace_extension(CoverageFilename, "gcda");
907 CmdArgs.push_back("-coverage-data-file");
908 CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
913 /// Check whether the given input tree contains any compilation actions.
914 static bool ContainsCompileAction(const Action *A) {
915 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
918 for (const auto &AI : A->inputs())
919 if (ContainsCompileAction(AI))
925 /// Check if -relax-all should be passed to the internal assembler.
926 /// This is done by default when compiling non-assembler source with -O0.
927 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
928 bool RelaxDefault = true;
930 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
931 RelaxDefault = A->getOption().matches(options::OPT_O0);
934 RelaxDefault = false;
935 for (const auto &Act : C.getActions()) {
936 if (ContainsCompileAction(Act)) {
943 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
947 // Extract the integer N from a string spelled "-dwarf-N", returning 0
948 // on mismatch. The StringRef input (rather than an Arg) allows
949 // for use by the "-Xassembler" option parser.
950 static unsigned DwarfVersionNum(StringRef ArgValue) {
951 return llvm::StringSwitch<unsigned>(ArgValue)
952 .Case("-gdwarf-2", 2)
953 .Case("-gdwarf-3", 3)
954 .Case("-gdwarf-4", 4)
955 .Case("-gdwarf-5", 5)
959 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
960 codegenoptions::DebugInfoKind DebugInfoKind,
961 unsigned DwarfVersion,
962 llvm::DebuggerKind DebuggerTuning) {
963 switch (DebugInfoKind) {
964 case codegenoptions::DebugDirectivesOnly:
965 CmdArgs.push_back("-debug-info-kind=line-directives-only");
967 case codegenoptions::DebugLineTablesOnly:
968 CmdArgs.push_back("-debug-info-kind=line-tables-only");
970 case codegenoptions::DebugInfoConstructor:
971 CmdArgs.push_back("-debug-info-kind=constructor");
973 case codegenoptions::LimitedDebugInfo:
974 CmdArgs.push_back("-debug-info-kind=limited");
976 case codegenoptions::FullDebugInfo:
977 CmdArgs.push_back("-debug-info-kind=standalone");
982 if (DwarfVersion > 0)
984 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
985 switch (DebuggerTuning) {
986 case llvm::DebuggerKind::GDB:
987 CmdArgs.push_back("-debugger-tuning=gdb");
989 case llvm::DebuggerKind::LLDB:
990 CmdArgs.push_back("-debugger-tuning=lldb");
992 case llvm::DebuggerKind::SCE:
993 CmdArgs.push_back("-debugger-tuning=sce");
1000 static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
1001 const Driver &D, const ToolChain &TC) {
1002 assert(A && "Expected non-nullptr argument.");
1003 if (TC.supportsDebugInfoOption(A))
1005 D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
1006 << A->getAsString(Args) << TC.getTripleString();
1010 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
1011 ArgStringList &CmdArgs,
1013 const ToolChain &TC) {
1014 const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
1017 if (checkDebugInfoOption(A, Args, D, TC)) {
1018 if (A->getOption().getID() == options::OPT_gz) {
1019 if (llvm::zlib::isAvailable())
1020 CmdArgs.push_back("--compress-debug-sections");
1022 D.Diag(diag::warn_debug_compression_unavailable);
1026 StringRef Value = A->getValue();
1027 if (Value == "none") {
1028 CmdArgs.push_back("--compress-debug-sections=none");
1029 } else if (Value == "zlib" || Value == "zlib-gnu") {
1030 if (llvm::zlib::isAvailable()) {
1032 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
1034 D.Diag(diag::warn_debug_compression_unavailable);
1037 D.Diag(diag::err_drv_unsupported_option_argument)
1038 << A->getOption().getName() << Value;
1043 static const char *RelocationModelName(llvm::Reloc::Model Model) {
1045 case llvm::Reloc::Static:
1047 case llvm::Reloc::PIC_:
1049 case llvm::Reloc::DynamicNoPIC:
1050 return "dynamic-no-pic";
1051 case llvm::Reloc::ROPI:
1053 case llvm::Reloc::RWPI:
1055 case llvm::Reloc::ROPI_RWPI:
1058 llvm_unreachable("Unknown Reloc::Model kind");
1061 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
1062 const Driver &D, const ArgList &Args,
1063 ArgStringList &CmdArgs,
1064 const InputInfo &Output,
1065 const InputInfoList &Inputs) const {
1066 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
1068 CheckPreprocessingOptions(D, Args);
1070 Args.AddLastArg(CmdArgs, options::OPT_C);
1071 Args.AddLastArg(CmdArgs, options::OPT_CC);
1073 // Handle dependency file generation.
1074 Arg *ArgM = Args.getLastArg(options::OPT_MM);
1076 ArgM = Args.getLastArg(options::OPT_M);
1077 Arg *ArgMD = Args.getLastArg(options::OPT_MMD);
1079 ArgMD = Args.getLastArg(options::OPT_MD);
1081 // -M and -MM imply -w.
1083 CmdArgs.push_back("-w");
1088 // Determine the output location.
1089 const char *DepFile;
1090 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1091 DepFile = MF->getValue();
1092 C.addFailureResultFile(DepFile, &JA);
1093 } else if (Output.getType() == types::TY_Dependencies) {
1094 DepFile = Output.getFilename();
1095 } else if (!ArgMD) {
1098 DepFile = getDependencyFileName(Args, Inputs);
1099 C.addFailureResultFile(DepFile, &JA);
1101 CmdArgs.push_back("-dependency-file");
1102 CmdArgs.push_back(DepFile);
1104 bool HasTarget = false;
1105 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1108 if (A->getOption().matches(options::OPT_MT)) {
1109 A->render(Args, CmdArgs);
1111 CmdArgs.push_back("-MT");
1112 SmallString<128> Quoted;
1113 QuoteTarget(A->getValue(), Quoted);
1114 CmdArgs.push_back(Args.MakeArgString(Quoted));
1118 // Add a default target if one wasn't specified.
1120 const char *DepTarget;
1122 // If user provided -o, that is the dependency target, except
1123 // when we are only generating a dependency file.
1124 Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1125 if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1126 DepTarget = OutputOpt->getValue();
1128 // Otherwise derive from the base input.
1130 // FIXME: This should use the computed output file location.
1131 SmallString<128> P(Inputs[0].getBaseInput());
1132 llvm::sys::path::replace_extension(P, "o");
1133 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1136 CmdArgs.push_back("-MT");
1137 SmallString<128> Quoted;
1138 QuoteTarget(DepTarget, Quoted);
1139 CmdArgs.push_back(Args.MakeArgString(Quoted));
1142 if (ArgM->getOption().matches(options::OPT_M) ||
1143 ArgM->getOption().matches(options::OPT_MD))
1144 CmdArgs.push_back("-sys-header-deps");
1145 if ((isa<PrecompileJobAction>(JA) &&
1146 !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1147 Args.hasArg(options::OPT_fmodule_file_deps))
1148 CmdArgs.push_back("-module-file-deps");
1151 if (Args.hasArg(options::OPT_MG)) {
1152 if (!ArgM || ArgM->getOption().matches(options::OPT_MD) ||
1153 ArgM->getOption().matches(options::OPT_MMD))
1154 D.Diag(diag::err_drv_mg_requires_m_or_mm);
1155 CmdArgs.push_back("-MG");
1158 Args.AddLastArg(CmdArgs, options::OPT_MP);
1159 Args.AddLastArg(CmdArgs, options::OPT_MV);
1161 // Add offload include arguments specific for CUDA/HIP. This must happen
1162 // before we -I or -include anything else, because we must pick up the
1163 // CUDA/HIP headers from the particular CUDA/ROCm installation, rather than
1164 // from e.g. /usr/local/include.
1165 if (JA.isOffloading(Action::OFK_Cuda))
1166 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1167 if (JA.isOffloading(Action::OFK_HIP))
1168 getToolChain().AddHIPIncludeArgs(Args, CmdArgs);
1170 // If we are offloading to a target via OpenMP we need to include the
1171 // openmp_wrappers folder which contains alternative system headers.
1172 if (JA.isDeviceOffloading(Action::OFK_OpenMP) &&
1173 getToolChain().getTriple().isNVPTX()){
1174 if (!Args.hasArg(options::OPT_nobuiltininc)) {
1175 // Add openmp_wrappers/* to our system include path. This lets us wrap
1176 // standard library headers.
1177 SmallString<128> P(D.ResourceDir);
1178 llvm::sys::path::append(P, "include");
1179 llvm::sys::path::append(P, "openmp_wrappers");
1180 CmdArgs.push_back("-internal-isystem");
1181 CmdArgs.push_back(Args.MakeArgString(P));
1184 CmdArgs.push_back("-include");
1185 CmdArgs.push_back("__clang_openmp_device_functions.h");
1188 // Add -i* options, and automatically translate to
1189 // -include-pch/-include-pth for transparent PCH support. It's
1190 // wonky, but we include looking for .gch so we can support seamless
1191 // replacement into a build system already set up to be generating
1194 if (getToolChain().getDriver().IsCLMode()) {
1195 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1196 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1197 if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1198 JA.getKind() <= Action::AssembleJobClass) {
1199 CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1200 // -fpch-instantiate-templates is the default when creating
1201 // precomp using /Yc
1202 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
1203 options::OPT_fno_pch_instantiate_templates, true))
1204 CmdArgs.push_back(Args.MakeArgString("-fpch-instantiate-templates"));
1206 if (YcArg || YuArg) {
1207 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1208 if (!isa<PrecompileJobAction>(JA)) {
1209 CmdArgs.push_back("-include-pch");
1210 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1211 C, !ThroughHeader.empty()
1213 : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1216 if (ThroughHeader.empty()) {
1217 CmdArgs.push_back(Args.MakeArgString(
1218 Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1221 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1226 bool RenderedImplicitInclude = false;
1227 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1228 if (A->getOption().matches(options::OPT_include)) {
1229 // Handling of gcc-style gch precompiled headers.
1230 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1231 RenderedImplicitInclude = true;
1233 bool FoundPCH = false;
1234 SmallString<128> P(A->getValue());
1235 // We want the files to have a name like foo.h.pch. Add a dummy extension
1236 // so that replace_extension does the right thing.
1238 llvm::sys::path::replace_extension(P, "pch");
1239 if (llvm::sys::fs::exists(P))
1243 llvm::sys::path::replace_extension(P, "gch");
1244 if (llvm::sys::fs::exists(P)) {
1250 if (IsFirstImplicitInclude) {
1252 CmdArgs.push_back("-include-pch");
1253 CmdArgs.push_back(Args.MakeArgString(P));
1256 // Ignore the PCH if not first on command line and emit warning.
1257 D.Diag(diag::warn_drv_pch_not_first_include) << P
1258 << A->getAsString(Args);
1261 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1262 // Handling of paths which must come late. These entries are handled by
1263 // the toolchain itself after the resource dir is inserted in the right
1265 // Do not claim the argument so that the use of the argument does not
1266 // silently go unnoticed on toolchains which do not honour the option.
1268 } else if (A->getOption().matches(options::OPT_stdlibxx_isystem)) {
1269 // Translated to -internal-isystem by the driver, no need to pass to cc1.
1273 // Not translated, render as usual.
1275 A->render(Args, CmdArgs);
1278 Args.AddAllArgs(CmdArgs,
1279 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1280 options::OPT_F, options::OPT_index_header_map});
1282 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1284 // FIXME: There is a very unfortunate problem here, some troubled
1285 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1286 // really support that we would have to parse and then translate
1287 // those options. :(
1288 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1289 options::OPT_Xpreprocessor);
1291 // -I- is a deprecated GCC feature, reject it.
1292 if (Arg *A = Args.getLastArg(options::OPT_I_))
1293 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1295 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1296 // -isysroot to the CC1 invocation.
1297 StringRef sysroot = C.getSysRoot();
1298 if (sysroot != "") {
1299 if (!Args.hasArg(options::OPT_isysroot)) {
1300 CmdArgs.push_back("-isysroot");
1301 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1305 // Parse additional include paths from environment variables.
1306 // FIXME: We should probably sink the logic for handling these from the
1307 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1308 // CPATH - included following the user specified includes (but prior to
1309 // builtin and standard includes).
1310 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1311 // C_INCLUDE_PATH - system includes enabled when compiling C.
1312 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1313 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1314 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1315 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1316 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1317 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1318 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1320 // While adding the include arguments, we also attempt to retrieve the
1321 // arguments of related offloading toolchains or arguments that are specific
1322 // of an offloading programming model.
1324 // Add C++ include arguments, if needed.
1325 if (types::isCXX(Inputs[0].getType())) {
1326 bool HasStdlibxxIsystem = Args.hasArg(options::OPT_stdlibxx_isystem);
1327 forAllAssociatedToolChains(
1328 C, JA, getToolChain(),
1329 [&Args, &CmdArgs, HasStdlibxxIsystem](const ToolChain &TC) {
1330 HasStdlibxxIsystem ? TC.AddClangCXXStdlibIsystemArgs(Args, CmdArgs)
1331 : TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1335 // Add system include arguments for all targets but IAMCU.
1337 forAllAssociatedToolChains(C, JA, getToolChain(),
1338 [&Args, &CmdArgs](const ToolChain &TC) {
1339 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1342 // For IAMCU add special include arguments.
1343 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1346 addMacroPrefixMapArg(D, Args, CmdArgs);
1349 // FIXME: Move to target hook.
1350 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1351 switch (Triple.getArch()) {
1355 case llvm::Triple::aarch64:
1356 case llvm::Triple::aarch64_32:
1357 case llvm::Triple::aarch64_be:
1358 case llvm::Triple::arm:
1359 case llvm::Triple::armeb:
1360 case llvm::Triple::thumb:
1361 case llvm::Triple::thumbeb:
1362 if (Triple.isOSDarwin() || Triple.isOSWindows())
1366 case llvm::Triple::ppc:
1367 case llvm::Triple::ppc64:
1368 if (Triple.isOSDarwin())
1372 case llvm::Triple::hexagon:
1373 case llvm::Triple::ppc64le:
1374 case llvm::Triple::riscv32:
1375 case llvm::Triple::riscv64:
1376 case llvm::Triple::systemz:
1377 case llvm::Triple::xcore:
1382 static bool hasMultipleInvocations(const llvm::Triple &Triple,
1383 const ArgList &Args) {
1384 // Supported only on Darwin where we invoke the compiler multiple times
1385 // followed by an invocation to lipo.
1386 if (!Triple.isOSDarwin())
1388 // If more than one "-arch <arch>" is specified, we're targeting multiple
1389 // architectures resulting in a fat binary.
1390 return Args.getAllArgValues(options::OPT_arch).size() > 1;
1393 static bool checkRemarksOptions(const Driver &D, const ArgList &Args,
1394 const llvm::Triple &Triple) {
1395 // When enabling remarks, we need to error if:
1396 // * The remark file is specified but we're targeting multiple architectures,
1397 // which means more than one remark file is being generated.
1398 bool hasMultipleInvocations = ::hasMultipleInvocations(Triple, Args);
1399 bool hasExplicitOutputFile =
1400 Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1401 if (hasMultipleInvocations && hasExplicitOutputFile) {
1402 D.Diag(diag::err_drv_invalid_output_with_multiple_archs)
1403 << "-foptimization-record-file";
1409 static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,
1410 const llvm::Triple &Triple,
1411 const InputInfo &Input,
1412 const InputInfo &Output, const JobAction &JA) {
1413 StringRef Format = "yaml";
1414 if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
1415 Format = A->getValue();
1417 CmdArgs.push_back("-opt-record-file");
1419 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1421 CmdArgs.push_back(A->getValue());
1423 bool hasMultipleArchs =
1424 Triple.isOSDarwin() && // Only supported on Darwin platforms.
1425 Args.getAllArgValues(options::OPT_arch).size() > 1;
1429 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
1430 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
1431 F = FinalOutput->getValue();
1433 if (Format != "yaml" && // For YAML, keep the original behavior.
1434 Triple.isOSDarwin() && // Enable this only on darwin, since it's the only platform supporting .dSYM bundles.
1435 Output.isFilename())
1436 F = Output.getFilename();
1440 // Use the input filename.
1441 F = llvm::sys::path::stem(Input.getBaseInput());
1443 // If we're compiling for an offload architecture (i.e. a CUDA device),
1444 // we need to make the file name for the device compilation different
1445 // from the host compilation.
1446 if (!JA.isDeviceOffloading(Action::OFK_None) &&
1447 !JA.isDeviceOffloading(Action::OFK_Host)) {
1448 llvm::sys::path::replace_extension(F, "");
1449 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
1450 Triple.normalize());
1452 F += JA.getOffloadingArch();
1456 // If we're having more than one "-arch", we should name the files
1457 // differently so that every cc1 invocation writes to a different file.
1458 // We're doing that by appending "-<arch>" with "<arch>" being the arch
1459 // name from the triple.
1460 if (hasMultipleArchs) {
1461 // First, remember the extension.
1462 SmallString<64> OldExtension = llvm::sys::path::extension(F);
1464 llvm::sys::path::replace_extension(F, "");
1465 // attach -<arch> to it.
1467 F += Triple.getArchName();
1468 // put back the extension.
1469 llvm::sys::path::replace_extension(F, OldExtension);
1472 SmallString<32> Extension;
1473 Extension += "opt.";
1474 Extension += Format;
1476 llvm::sys::path::replace_extension(F, Extension);
1477 CmdArgs.push_back(Args.MakeArgString(F));
1481 Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
1482 CmdArgs.push_back("-opt-record-passes");
1483 CmdArgs.push_back(A->getValue());
1486 if (!Format.empty()) {
1487 CmdArgs.push_back("-opt-record-format");
1488 CmdArgs.push_back(Format.data());
1493 void RenderARMABI(const llvm::Triple &Triple, const ArgList &Args,
1494 ArgStringList &CmdArgs) {
1495 // Select the ABI to use.
1496 // FIXME: Support -meabi.
1497 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1498 const char *ABIName = nullptr;
1499 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1500 ABIName = A->getValue();
1502 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1503 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1506 CmdArgs.push_back("-target-abi");
1507 CmdArgs.push_back(ABIName);
1511 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1512 ArgStringList &CmdArgs, bool KernelOrKext) const {
1513 RenderARMABI(Triple, Args, CmdArgs);
1515 // Determine floating point ABI from the options & target defaults.
1516 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1517 if (ABI == arm::FloatABI::Soft) {
1518 // Floating point operations and argument passing are soft.
1519 // FIXME: This changes CPP defines, we need -target-soft-float.
1520 CmdArgs.push_back("-msoft-float");
1521 CmdArgs.push_back("-mfloat-abi");
1522 CmdArgs.push_back("soft");
1523 } else if (ABI == arm::FloatABI::SoftFP) {
1524 // Floating point operations are hard, but argument passing is soft.
1525 CmdArgs.push_back("-mfloat-abi");
1526 CmdArgs.push_back("soft");
1528 // Floating point operations and argument passing are hard.
1529 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1530 CmdArgs.push_back("-mfloat-abi");
1531 CmdArgs.push_back("hard");
1534 // Forward the -mglobal-merge option for explicit control over the pass.
1535 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1536 options::OPT_mno_global_merge)) {
1537 CmdArgs.push_back("-mllvm");
1538 if (A->getOption().matches(options::OPT_mno_global_merge))
1539 CmdArgs.push_back("-arm-global-merge=false");
1541 CmdArgs.push_back("-arm-global-merge=true");
1544 if (!Args.hasFlag(options::OPT_mimplicit_float,
1545 options::OPT_mno_implicit_float, true))
1546 CmdArgs.push_back("-no-implicit-float");
1548 if (Args.getLastArg(options::OPT_mcmse))
1549 CmdArgs.push_back("-mcmse");
1552 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1553 const ArgList &Args, bool KernelOrKext,
1554 ArgStringList &CmdArgs) const {
1555 const ToolChain &TC = getToolChain();
1557 // Add the target features
1558 getTargetFeatures(TC.getDriver(), EffectiveTriple, Args, CmdArgs, false);
1560 // Add target specific flags.
1561 switch (TC.getArch()) {
1565 case llvm::Triple::arm:
1566 case llvm::Triple::armeb:
1567 case llvm::Triple::thumb:
1568 case llvm::Triple::thumbeb:
1569 // Use the effective triple, which takes into account the deployment target.
1570 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1571 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1574 case llvm::Triple::aarch64:
1575 case llvm::Triple::aarch64_32:
1576 case llvm::Triple::aarch64_be:
1577 AddAArch64TargetArgs(Args, CmdArgs);
1578 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1581 case llvm::Triple::mips:
1582 case llvm::Triple::mipsel:
1583 case llvm::Triple::mips64:
1584 case llvm::Triple::mips64el:
1585 AddMIPSTargetArgs(Args, CmdArgs);
1588 case llvm::Triple::ppc:
1589 case llvm::Triple::ppc64:
1590 case llvm::Triple::ppc64le:
1591 AddPPCTargetArgs(Args, CmdArgs);
1594 case llvm::Triple::riscv32:
1595 case llvm::Triple::riscv64:
1596 AddRISCVTargetArgs(Args, CmdArgs);
1599 case llvm::Triple::sparc:
1600 case llvm::Triple::sparcel:
1601 case llvm::Triple::sparcv9:
1602 AddSparcTargetArgs(Args, CmdArgs);
1605 case llvm::Triple::systemz:
1606 AddSystemZTargetArgs(Args, CmdArgs);
1609 case llvm::Triple::x86:
1610 case llvm::Triple::x86_64:
1611 AddX86TargetArgs(Args, CmdArgs);
1614 case llvm::Triple::lanai:
1615 AddLanaiTargetArgs(Args, CmdArgs);
1618 case llvm::Triple::hexagon:
1619 AddHexagonTargetArgs(Args, CmdArgs);
1622 case llvm::Triple::wasm32:
1623 case llvm::Triple::wasm64:
1624 AddWebAssemblyTargetArgs(Args, CmdArgs);
1627 case llvm::Triple::ve:
1628 AddVETargetArgs(Args, CmdArgs);
1634 void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1635 ArgStringList &CmdArgs) {
1636 const char *ABIName = nullptr;
1637 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1638 ABIName = A->getValue();
1639 else if (Triple.isOSDarwin())
1640 ABIName = "darwinpcs";
1644 CmdArgs.push_back("-target-abi");
1645 CmdArgs.push_back(ABIName);
1649 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1650 ArgStringList &CmdArgs) const {
1651 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1653 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1654 Args.hasArg(options::OPT_mkernel) ||
1655 Args.hasArg(options::OPT_fapple_kext))
1656 CmdArgs.push_back("-disable-red-zone");
1658 if (!Args.hasFlag(options::OPT_mimplicit_float,
1659 options::OPT_mno_implicit_float, true))
1660 CmdArgs.push_back("-no-implicit-float");
1662 RenderAArch64ABI(Triple, Args, CmdArgs);
1664 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1665 options::OPT_mno_fix_cortex_a53_835769)) {
1666 CmdArgs.push_back("-mllvm");
1667 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1668 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1670 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1671 } else if (Triple.isAndroid()) {
1672 // Enabled A53 errata (835769) workaround by default on android
1673 CmdArgs.push_back("-mllvm");
1674 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1677 // Forward the -mglobal-merge option for explicit control over the pass.
1678 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1679 options::OPT_mno_global_merge)) {
1680 CmdArgs.push_back("-mllvm");
1681 if (A->getOption().matches(options::OPT_mno_global_merge))
1682 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1684 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1687 // Enable/disable return address signing and indirect branch targets.
1688 if (Arg *A = Args.getLastArg(options::OPT_msign_return_address_EQ,
1689 options::OPT_mbranch_protection_EQ)) {
1691 const Driver &D = getToolChain().getDriver();
1693 StringRef Scope, Key;
1694 bool IndirectBranches;
1696 if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1697 Scope = A->getValue();
1698 if (!Scope.equals("none") && !Scope.equals("non-leaf") &&
1699 !Scope.equals("all"))
1700 D.Diag(diag::err_invalid_branch_protection)
1701 << Scope << A->getAsString(Args);
1703 IndirectBranches = false;
1706 llvm::AArch64::ParsedBranchProtection PBP;
1707 if (!llvm::AArch64::parseBranchProtection(A->getValue(), PBP, Err))
1708 D.Diag(diag::err_invalid_branch_protection)
1709 << Err << A->getAsString(Args);
1712 IndirectBranches = PBP.BranchTargetEnforcement;
1716 Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1718 Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1719 if (IndirectBranches)
1720 CmdArgs.push_back("-mbranch-target-enforce");
1724 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1725 ArgStringList &CmdArgs) const {
1726 const Driver &D = getToolChain().getDriver();
1729 const llvm::Triple &Triple = getToolChain().getTriple();
1730 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1732 CmdArgs.push_back("-target-abi");
1733 CmdArgs.push_back(ABIName.data());
1735 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args, Triple);
1736 if (ABI == mips::FloatABI::Soft) {
1737 // Floating point operations and argument passing are soft.
1738 CmdArgs.push_back("-msoft-float");
1739 CmdArgs.push_back("-mfloat-abi");
1740 CmdArgs.push_back("soft");
1742 // Floating point operations and argument passing are hard.
1743 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1744 CmdArgs.push_back("-mfloat-abi");
1745 CmdArgs.push_back("hard");
1748 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1749 options::OPT_mno_ldc1_sdc1)) {
1750 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1751 CmdArgs.push_back("-mllvm");
1752 CmdArgs.push_back("-mno-ldc1-sdc1");
1756 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1757 options::OPT_mno_check_zero_division)) {
1758 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1759 CmdArgs.push_back("-mllvm");
1760 CmdArgs.push_back("-mno-check-zero-division");
1764 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1765 StringRef v = A->getValue();
1766 CmdArgs.push_back("-mllvm");
1767 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1771 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1773 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1775 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1776 // -mgpopt is the default for static, -fno-pic environments but these two
1777 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1778 // the only case where -mllvm -mgpopt is passed.
1779 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1780 // passed explicitly when compiling something with -mabicalls
1781 // (implictly) in affect. Currently the warning is in the backend.
1783 // When the ABI in use is N64, we also need to determine the PIC mode that
1784 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1786 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1788 llvm::Reloc::Model RelocationModel;
1791 std::tie(RelocationModel, PICLevel, IsPIE) =
1792 ParsePICArgs(getToolChain(), Args);
1794 NoABICalls = NoABICalls ||
1795 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1797 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1798 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1799 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1800 CmdArgs.push_back("-mllvm");
1801 CmdArgs.push_back("-mgpopt");
1803 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1804 options::OPT_mno_local_sdata);
1805 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1806 options::OPT_mno_extern_sdata);
1807 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1808 options::OPT_mno_embedded_data);
1810 CmdArgs.push_back("-mllvm");
1811 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1812 CmdArgs.push_back("-mlocal-sdata=1");
1814 CmdArgs.push_back("-mlocal-sdata=0");
1816 LocalSData->claim();
1820 CmdArgs.push_back("-mllvm");
1821 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1822 CmdArgs.push_back("-mextern-sdata=1");
1824 CmdArgs.push_back("-mextern-sdata=0");
1826 ExternSData->claim();
1830 CmdArgs.push_back("-mllvm");
1831 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1832 CmdArgs.push_back("-membedded-data=1");
1834 CmdArgs.push_back("-membedded-data=0");
1836 EmbeddedData->claim();
1839 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1840 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1845 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1846 StringRef Val = StringRef(A->getValue());
1847 if (mips::hasCompactBranches(CPUName)) {
1848 if (Val == "never" || Val == "always" || Val == "optimal") {
1849 CmdArgs.push_back("-mllvm");
1850 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1852 D.Diag(diag::err_drv_unsupported_option_argument)
1853 << A->getOption().getName() << Val;
1855 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1858 if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,
1859 options::OPT_mno_relax_pic_calls)) {
1860 if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {
1861 CmdArgs.push_back("-mllvm");
1862 CmdArgs.push_back("-mips-jalr-reloc=0");
1867 void Clang::AddPPCTargetArgs(const ArgList &Args,
1868 ArgStringList &CmdArgs) const {
1869 // Select the ABI to use.
1870 const char *ABIName = nullptr;
1871 const llvm::Triple &T = getToolChain().getTriple();
1872 if (T.isOSBinFormatELF()) {
1873 switch (getToolChain().getArch()) {
1874 case llvm::Triple::ppc64: {
1875 // When targeting a processor that supports QPX, or if QPX is
1876 // specifically enabled, default to using the ABI that supports QPX (so
1877 // long as it is not specifically disabled).
1878 bool HasQPX = false;
1879 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1880 HasQPX = A->getValue() == StringRef("a2q");
1881 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1883 ABIName = "elfv1-qpx";
1886 if ((T.isOSFreeBSD() && T.getOSMajorVersion() >= 13) ||
1887 T.isOSOpenBSD() || T.isMusl())
1893 case llvm::Triple::ppc64le:
1901 bool IEEELongDouble = false;
1902 for (const Arg *A : Args.filtered(options::OPT_mabi_EQ)) {
1903 StringRef V = A->getValue();
1904 if (V == "ieeelongdouble")
1905 IEEELongDouble = true;
1906 else if (V == "ibmlongdouble")
1907 IEEELongDouble = false;
1908 else if (V != "altivec")
1909 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1910 // the option if given as we don't have backend support for any targets
1911 // that don't use the altivec abi.
1912 ABIName = A->getValue();
1915 CmdArgs.push_back("-mabi=ieeelongdouble");
1917 ppc::FloatABI FloatABI =
1918 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1920 if (FloatABI == ppc::FloatABI::Soft) {
1921 // Floating point operations and argument passing are soft.
1922 CmdArgs.push_back("-msoft-float");
1923 CmdArgs.push_back("-mfloat-abi");
1924 CmdArgs.push_back("soft");
1926 // Floating point operations and argument passing are hard.
1927 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1928 CmdArgs.push_back("-mfloat-abi");
1929 CmdArgs.push_back("hard");
1933 CmdArgs.push_back("-target-abi");
1934 CmdArgs.push_back(ABIName);
1938 static void SetRISCVSmallDataLimit(const ToolChain &TC, const ArgList &Args,
1939 ArgStringList &CmdArgs) {
1940 const Driver &D = TC.getDriver();
1941 const llvm::Triple &Triple = TC.getTriple();
1942 // Default small data limitation is eight.
1943 const char *SmallDataLimit = "8";
1944 // Get small data limitation.
1945 if (Args.getLastArg(options::OPT_shared, options::OPT_fpic,
1946 options::OPT_fPIC)) {
1947 // Not support linker relaxation for PIC.
1948 SmallDataLimit = "0";
1949 if (Args.hasArg(options::OPT_G)) {
1950 D.Diag(diag::warn_drv_unsupported_sdata);
1952 } else if (Args.getLastArgValue(options::OPT_mcmodel_EQ)
1953 .equals_lower("large") &&
1954 (Triple.getArch() == llvm::Triple::riscv64)) {
1955 // Not support linker relaxation for RV64 with large code model.
1956 SmallDataLimit = "0";
1957 if (Args.hasArg(options::OPT_G)) {
1958 D.Diag(diag::warn_drv_unsupported_sdata);
1960 } else if (Arg *A = Args.getLastArg(options::OPT_G)) {
1961 SmallDataLimit = A->getValue();
1963 // Forward the -msmall-data-limit= option.
1964 CmdArgs.push_back("-msmall-data-limit");
1965 CmdArgs.push_back(SmallDataLimit);
1968 void Clang::AddRISCVTargetArgs(const ArgList &Args,
1969 ArgStringList &CmdArgs) const {
1970 const llvm::Triple &Triple = getToolChain().getTriple();
1971 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
1973 CmdArgs.push_back("-target-abi");
1974 CmdArgs.push_back(ABIName.data());
1976 SetRISCVSmallDataLimit(getToolChain(), Args, CmdArgs);
1979 void Clang::AddSparcTargetArgs(const ArgList &Args,
1980 ArgStringList &CmdArgs) const {
1981 sparc::FloatABI FloatABI =
1982 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1984 if (FloatABI == sparc::FloatABI::Soft) {
1985 // Floating point operations and argument passing are soft.
1986 CmdArgs.push_back("-msoft-float");
1987 CmdArgs.push_back("-mfloat-abi");
1988 CmdArgs.push_back("soft");
1990 // Floating point operations and argument passing are hard.
1991 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1992 CmdArgs.push_back("-mfloat-abi");
1993 CmdArgs.push_back("hard");
1997 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1998 ArgStringList &CmdArgs) const {
1999 bool HasBackchain = Args.hasFlag(options::OPT_mbackchain,
2000 options::OPT_mno_backchain, false);
2001 bool HasPackedStack = Args.hasFlag(options::OPT_mpacked_stack,
2002 options::OPT_mno_packed_stack, false);
2003 systemz::FloatABI FloatABI =
2004 systemz::getSystemZFloatABI(getToolChain().getDriver(), Args);
2005 bool HasSoftFloat = (FloatABI == systemz::FloatABI::Soft);
2006 if (HasBackchain && HasPackedStack && !HasSoftFloat) {
2007 const Driver &D = getToolChain().getDriver();
2008 D.Diag(diag::err_drv_unsupported_opt)
2009 << "-mpacked-stack -mbackchain -mhard-float";
2012 CmdArgs.push_back("-mbackchain");
2014 CmdArgs.push_back("-mpacked-stack");
2016 // Floating point operations and argument passing are soft.
2017 CmdArgs.push_back("-msoft-float");
2018 CmdArgs.push_back("-mfloat-abi");
2019 CmdArgs.push_back("soft");
2023 void Clang::AddX86TargetArgs(const ArgList &Args,
2024 ArgStringList &CmdArgs) const {
2025 const Driver &D = getToolChain().getDriver();
2026 addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/false);
2028 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
2029 Args.hasArg(options::OPT_mkernel) ||
2030 Args.hasArg(options::OPT_fapple_kext))
2031 CmdArgs.push_back("-disable-red-zone");
2033 if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
2034 options::OPT_mno_tls_direct_seg_refs, true))
2035 CmdArgs.push_back("-mno-tls-direct-seg-refs");
2037 // Default to avoid implicit floating-point for kernel/kext code, but allow
2038 // that to be overridden with -mno-soft-float.
2039 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
2040 Args.hasArg(options::OPT_fapple_kext));
2041 if (Arg *A = Args.getLastArg(
2042 options::OPT_msoft_float, options::OPT_mno_soft_float,
2043 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
2044 const Option &O = A->getOption();
2045 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
2046 O.matches(options::OPT_msoft_float));
2048 if (NoImplicitFloat)
2049 CmdArgs.push_back("-no-implicit-float");
2051 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
2052 StringRef Value = A->getValue();
2053 if (Value == "intel" || Value == "att") {
2054 CmdArgs.push_back("-mllvm");
2055 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
2057 D.Diag(diag::err_drv_unsupported_option_argument)
2058 << A->getOption().getName() << Value;
2060 } else if (D.IsCLMode()) {
2061 CmdArgs.push_back("-mllvm");
2062 CmdArgs.push_back("-x86-asm-syntax=intel");
2065 // Set flags to support MCU ABI.
2066 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
2067 CmdArgs.push_back("-mfloat-abi");
2068 CmdArgs.push_back("soft");
2069 CmdArgs.push_back("-mstack-alignment=4");
2073 void Clang::AddHexagonTargetArgs(const ArgList &Args,
2074 ArgStringList &CmdArgs) const {
2075 CmdArgs.push_back("-mqdsp6-compat");
2076 CmdArgs.push_back("-Wreturn-type");
2078 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
2079 CmdArgs.push_back("-mllvm");
2080 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
2081 Twine(G.getValue())));
2084 if (!Args.hasArg(options::OPT_fno_short_enums))
2085 CmdArgs.push_back("-fshort-enums");
2086 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
2087 CmdArgs.push_back("-mllvm");
2088 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
2090 CmdArgs.push_back("-mllvm");
2091 CmdArgs.push_back("-machine-sink-split=0");
2094 void Clang::AddLanaiTargetArgs(const ArgList &Args,
2095 ArgStringList &CmdArgs) const {
2096 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
2097 StringRef CPUName = A->getValue();
2099 CmdArgs.push_back("-target-cpu");
2100 CmdArgs.push_back(Args.MakeArgString(CPUName));
2102 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
2103 StringRef Value = A->getValue();
2104 // Only support mregparm=4 to support old usage. Report error for all other
2107 if (Value.getAsInteger(10, Mregparm)) {
2108 if (Mregparm != 4) {
2109 getToolChain().getDriver().Diag(
2110 diag::err_drv_unsupported_option_argument)
2111 << A->getOption().getName() << Value;
2117 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
2118 ArgStringList &CmdArgs) const {
2119 // Default to "hidden" visibility.
2120 if (!Args.hasArg(options::OPT_fvisibility_EQ,
2121 options::OPT_fvisibility_ms_compat)) {
2122 CmdArgs.push_back("-fvisibility");
2123 CmdArgs.push_back("hidden");
2127 void Clang::AddVETargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const {
2128 // Floating point operations and argument passing are hard.
2129 CmdArgs.push_back("-mfloat-abi");
2130 CmdArgs.push_back("hard");
2133 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
2134 StringRef Target, const InputInfo &Output,
2135 const InputInfo &Input, const ArgList &Args) const {
2136 // If this is a dry run, do not create the compilation database file.
2137 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2140 using llvm::yaml::escape;
2141 const Driver &D = getToolChain().getDriver();
2143 if (!CompilationDatabase) {
2145 auto File = std::make_unique<llvm::raw_fd_ostream>(Filename, EC,
2146 llvm::sys::fs::OF_Text);
2148 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
2152 CompilationDatabase = std::move(File);
2154 auto &CDB = *CompilationDatabase;
2155 auto CWD = D.getVFS().getCurrentWorkingDirectory();
2158 CDB << "{ \"directory\": \"" << escape(*CWD) << "\"";
2159 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
2160 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
2161 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
2162 SmallString<128> Buf;
2164 Buf += types::getTypeName(Input.getType());
2165 CDB << ", \"" << escape(Buf) << "\"";
2166 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
2169 CDB << ", \"" << escape(Buf) << "\"";
2171 CDB << ", \"" << escape(Input.getFilename()) << "\"";
2172 for (auto &A: Args) {
2173 auto &O = A->getOption();
2174 // Skip language selection, which is positional.
2175 if (O.getID() == options::OPT_x)
2177 // Skip writing dependency output and the compilation database itself.
2178 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
2180 if (O.getID() == options::OPT_gen_cdb_fragment_path)
2183 if (O.getKind() == Option::InputClass)
2185 // All other arguments are quoted and appended.
2187 A->render(Args, ASL);
2189 CDB << ", \"" << escape(it) << "\"";
2193 CDB << ", \"" << escape(Buf) << "\"]},\n";
2196 void Clang::DumpCompilationDatabaseFragmentToDir(
2197 StringRef Dir, Compilation &C, StringRef Target, const InputInfo &Output,
2198 const InputInfo &Input, const llvm::opt::ArgList &Args) const {
2199 // If this is a dry run, do not create the compilation database file.
2200 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2203 if (CompilationDatabase)
2204 DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2206 SmallString<256> Path = Dir;
2207 const auto &Driver = C.getDriver();
2208 Driver.getVFS().makeAbsolute(Path);
2209 auto Err = llvm::sys::fs::create_directory(Path, /*IgnoreExisting=*/true);
2211 Driver.Diag(diag::err_drv_compilationdatabase) << Dir << Err.message();
2215 llvm::sys::path::append(
2217 Twine(llvm::sys::path::filename(Input.getFilename())) + ".%%%%.json");
2219 SmallString<256> TempPath;
2220 Err = llvm::sys::fs::createUniqueFile(Path, FD, TempPath);
2222 Driver.Diag(diag::err_drv_compilationdatabase) << Path << Err.message();
2225 CompilationDatabase =
2226 std::make_unique<llvm::raw_fd_ostream>(FD, /*shouldClose=*/true);
2227 DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2230 static void CollectArgsForIntegratedAssembler(Compilation &C,
2231 const ArgList &Args,
2232 ArgStringList &CmdArgs,
2234 if (UseRelaxAll(C, Args))
2235 CmdArgs.push_back("-mrelax-all");
2237 // Only default to -mincremental-linker-compatible if we think we are
2238 // targeting the MSVC linker.
2239 bool DefaultIncrementalLinkerCompatible =
2240 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2241 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
2242 options::OPT_mno_incremental_linker_compatible,
2243 DefaultIncrementalLinkerCompatible))
2244 CmdArgs.push_back("-mincremental-linker-compatible");
2246 switch (C.getDefaultToolChain().getArch()) {
2247 case llvm::Triple::arm:
2248 case llvm::Triple::armeb:
2249 case llvm::Triple::thumb:
2250 case llvm::Triple::thumbeb:
2251 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
2252 StringRef Value = A->getValue();
2253 if (Value == "always" || Value == "never" || Value == "arm" ||
2255 CmdArgs.push_back("-mllvm");
2256 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2258 D.Diag(diag::err_drv_unsupported_option_argument)
2259 << A->getOption().getName() << Value;
2267 // If you add more args here, also add them to the block below that
2268 // starts with "// If CollectArgsForIntegratedAssembler() isn't called below".
2270 // When passing -I arguments to the assembler we sometimes need to
2271 // unconditionally take the next argument. For example, when parsing
2272 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2273 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2274 // arg after parsing the '-I' arg.
2275 bool TakeNextArg = false;
2277 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2278 bool UseNoExecStack = C.getDefaultToolChain().isNoExecStackDefault();
2279 const char *MipsTargetFeature = nullptr;
2281 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
2284 for (StringRef Value : A->getValues()) {
2286 CmdArgs.push_back(Value.data());
2287 TakeNextArg = false;
2291 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2292 Value == "-mbig-obj")
2293 continue; // LLVM handles bigobj automatically
2295 switch (C.getDefaultToolChain().getArch()) {
2298 case llvm::Triple::thumb:
2299 case llvm::Triple::thumbeb:
2300 case llvm::Triple::arm:
2301 case llvm::Triple::armeb:
2302 if (Value == "-mthumb")
2303 // -mthumb has already been processed in ComputeLLVMTriple()
2304 // recognize but skip over here.
2307 case llvm::Triple::mips:
2308 case llvm::Triple::mipsel:
2309 case llvm::Triple::mips64:
2310 case llvm::Triple::mips64el:
2311 if (Value == "--trap") {
2312 CmdArgs.push_back("-target-feature");
2313 CmdArgs.push_back("+use-tcc-in-div");
2316 if (Value == "--break") {
2317 CmdArgs.push_back("-target-feature");
2318 CmdArgs.push_back("-use-tcc-in-div");
2321 if (Value.startswith("-msoft-float")) {
2322 CmdArgs.push_back("-target-feature");
2323 CmdArgs.push_back("+soft-float");
2326 if (Value.startswith("-mhard-float")) {
2327 CmdArgs.push_back("-target-feature");
2328 CmdArgs.push_back("-soft-float");
2332 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2333 .Case("-mips1", "+mips1")
2334 .Case("-mips2", "+mips2")
2335 .Case("-mips3", "+mips3")
2336 .Case("-mips4", "+mips4")
2337 .Case("-mips5", "+mips5")
2338 .Case("-mips32", "+mips32")
2339 .Case("-mips32r2", "+mips32r2")
2340 .Case("-mips32r3", "+mips32r3")
2341 .Case("-mips32r5", "+mips32r5")
2342 .Case("-mips32r6", "+mips32r6")
2343 .Case("-mips64", "+mips64")
2344 .Case("-mips64r2", "+mips64r2")
2345 .Case("-mips64r3", "+mips64r3")
2346 .Case("-mips64r5", "+mips64r5")
2347 .Case("-mips64r6", "+mips64r6")
2349 if (MipsTargetFeature)
2353 if (Value == "-force_cpusubtype_ALL") {
2354 // Do nothing, this is the default and we don't support anything else.
2355 } else if (Value == "-L") {
2356 CmdArgs.push_back("-msave-temp-labels");
2357 } else if (Value == "--fatal-warnings") {
2358 CmdArgs.push_back("-massembler-fatal-warnings");
2359 } else if (Value == "--no-warn" || Value == "-W") {
2360 CmdArgs.push_back("-massembler-no-warn");
2361 } else if (Value == "--noexecstack") {
2362 UseNoExecStack = true;
2363 } else if (Value.startswith("-compress-debug-sections") ||
2364 Value.startswith("--compress-debug-sections") ||
2365 Value == "-nocompress-debug-sections" ||
2366 Value == "--nocompress-debug-sections") {
2367 CmdArgs.push_back(Value.data());
2368 } else if (Value == "-mrelax-relocations=yes" ||
2369 Value == "--mrelax-relocations=yes") {
2370 UseRelaxRelocations = true;
2371 } else if (Value == "-mrelax-relocations=no" ||
2372 Value == "--mrelax-relocations=no") {
2373 UseRelaxRelocations = false;
2374 } else if (Value.startswith("-I")) {
2375 CmdArgs.push_back(Value.data());
2376 // We need to consume the next argument if the current arg is a plain
2377 // -I. The next arg will be the include directory.
2380 } else if (Value.startswith("-gdwarf-")) {
2381 // "-gdwarf-N" options are not cc1as options.
2382 unsigned DwarfVersion = DwarfVersionNum(Value);
2383 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2384 CmdArgs.push_back(Value.data());
2386 RenderDebugEnablingArgs(Args, CmdArgs,
2387 codegenoptions::LimitedDebugInfo,
2388 DwarfVersion, llvm::DebuggerKind::Default);
2390 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2391 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2392 // Do nothing, we'll validate it later.
2393 } else if (Value == "-defsym") {
2394 if (A->getNumValues() != 2) {
2395 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2398 const char *S = A->getValue(1);
2399 auto Pair = StringRef(S).split('=');
2400 auto Sym = Pair.first;
2401 auto SVal = Pair.second;
2403 if (Sym.empty() || SVal.empty()) {
2404 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2408 if (SVal.getAsInteger(0, IVal)) {
2409 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2412 CmdArgs.push_back(Value.data());
2414 } else if (Value == "-fdebug-compilation-dir") {
2415 CmdArgs.push_back("-fdebug-compilation-dir");
2417 } else if (Value.consume_front("-fdebug-compilation-dir=")) {
2418 // The flag is a -Wa / -Xassembler argument and Options doesn't
2419 // parse the argument, so this isn't automatically aliased to
2420 // -fdebug-compilation-dir (without '=') here.
2421 CmdArgs.push_back("-fdebug-compilation-dir");
2422 CmdArgs.push_back(Value.data());
2424 D.Diag(diag::err_drv_unsupported_option_argument)
2425 << A->getOption().getName() << Value;
2429 if (UseRelaxRelocations)
2430 CmdArgs.push_back("--mrelax-relocations");
2432 CmdArgs.push_back("-mnoexecstack");
2433 if (MipsTargetFeature != nullptr) {
2434 CmdArgs.push_back("-target-feature");
2435 CmdArgs.push_back(MipsTargetFeature);
2438 // forward -fembed-bitcode to assmebler
2439 if (C.getDriver().embedBitcodeEnabled() ||
2440 C.getDriver().embedBitcodeMarkerOnly())
2441 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2444 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2445 bool OFastEnabled, const ArgList &Args,
2446 ArgStringList &CmdArgs,
2447 const JobAction &JA) {
2448 // Handle various floating point optimization flags, mapping them to the
2449 // appropriate LLVM code generation flags. This is complicated by several
2450 // "umbrella" flags, so we do this by stepping through the flags incrementally
2451 // adjusting what we think is enabled/disabled, then at the end setting the
2452 // LLVM flags based on the final state.
2453 bool HonorINFs = true;
2454 bool HonorNaNs = true;
2455 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2456 bool MathErrno = TC.IsMathErrnoDefault();
2457 bool AssociativeMath = false;
2458 bool ReciprocalMath = false;
2459 bool SignedZeros = true;
2460 bool TrappingMath = false; // Implemented via -ffp-exception-behavior
2461 bool TrappingMathPresent = false; // Is trapping-math in args, and not
2462 // overriden by ffp-exception-behavior?
2463 bool RoundingFPMath = false;
2464 bool RoundingMathPresent = false; // Is rounding-math in args?
2465 // -ffp-model values: strict, fast, precise
2466 StringRef FPModel = "";
2467 // -ffp-exception-behavior options: strict, maytrap, ignore
2468 StringRef FPExceptionBehavior = "";
2469 const llvm::DenormalMode DefaultDenormalFPMath =
2470 TC.getDefaultDenormalModeForType(Args, JA);
2471 const llvm::DenormalMode DefaultDenormalFP32Math =
2472 TC.getDefaultDenormalModeForType(Args, JA, &llvm::APFloat::IEEEsingle());
2474 llvm::DenormalMode DenormalFPMath = DefaultDenormalFPMath;
2475 llvm::DenormalMode DenormalFP32Math = DefaultDenormalFP32Math;
2476 StringRef FPContract = "";
2477 bool StrictFPModel = false;
2480 if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2481 CmdArgs.push_back("-mlimit-float-precision");
2482 CmdArgs.push_back(A->getValue());
2485 for (const Arg *A : Args) {
2486 auto optID = A->getOption().getID();
2487 bool PreciseFPModel = false;
2491 case options::OPT_ffp_model_EQ: {
2492 // If -ffp-model= is seen, reset to fno-fast-math
2495 // Turning *off* -ffast-math restores the toolchain default.
2496 MathErrno = TC.IsMathErrnoDefault();
2497 AssociativeMath = false;
2498 ReciprocalMath = false;
2500 // -fno_fast_math restores default denormal and fpcontract handling
2502 DenormalFPMath = llvm::DenormalMode::getIEEE();
2504 // FIXME: The target may have picked a non-IEEE default mode here based on
2505 // -cl-denorms-are-zero. Should the target consider -fp-model interaction?
2506 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2508 StringRef Val = A->getValue();
2509 if (OFastEnabled && !Val.equals("fast")) {
2510 // Only -ffp-model=fast is compatible with OFast, ignore.
2511 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2512 << Args.MakeArgString("-ffp-model=" + Val)
2516 StrictFPModel = false;
2517 PreciseFPModel = true;
2518 // ffp-model= is a Driver option, it is entirely rewritten into more
2519 // granular options before being passed into cc1.
2520 // Use the gcc option in the switch below.
2521 if (!FPModel.empty() && !FPModel.equals(Val)) {
2522 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2523 << Args.MakeArgString("-ffp-model=" + FPModel)
2524 << Args.MakeArgString("-ffp-model=" + Val);
2527 if (Val.equals("fast")) {
2528 optID = options::OPT_ffast_math;
2530 FPContract = "fast";
2531 } else if (Val.equals("precise")) {
2532 optID = options::OPT_ffp_contract;
2534 FPContract = "fast";
2535 PreciseFPModel = true;
2536 } else if (Val.equals("strict")) {
2537 StrictFPModel = true;
2538 optID = options::OPT_frounding_math;
2539 FPExceptionBehavior = "strict";
2542 TrappingMath = true;
2544 D.Diag(diag::err_drv_unsupported_option_argument)
2545 << A->getOption().getName() << Val;
2551 // If this isn't an FP option skip the claim below
2554 // Options controlling individual features
2555 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2556 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2557 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2558 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2559 case options::OPT_fmath_errno: MathErrno = true; break;
2560 case options::OPT_fno_math_errno: MathErrno = false; break;
2561 case options::OPT_fassociative_math: AssociativeMath = true; break;
2562 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2563 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2564 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2565 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2566 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2567 case options::OPT_ftrapping_math:
2568 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2569 !FPExceptionBehavior.equals("strict"))
2570 // Warn that previous value of option is overridden.
2571 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2572 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2573 << "-ftrapping-math";
2574 TrappingMath = true;
2575 TrappingMathPresent = true;
2576 FPExceptionBehavior = "strict";
2578 case options::OPT_fno_trapping_math:
2579 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2580 !FPExceptionBehavior.equals("ignore"))
2581 // Warn that previous value of option is overridden.
2582 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2583 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2584 << "-fno-trapping-math";
2585 TrappingMath = false;
2586 TrappingMathPresent = true;
2587 FPExceptionBehavior = "ignore";
2590 case options::OPT_frounding_math:
2591 RoundingFPMath = true;
2592 RoundingMathPresent = true;
2595 case options::OPT_fno_rounding_math:
2596 RoundingFPMath = false;
2597 RoundingMathPresent = false;
2600 case options::OPT_fdenormal_fp_math_EQ:
2601 DenormalFPMath = llvm::parseDenormalFPAttribute(A->getValue());
2602 if (!DenormalFPMath.isValid()) {
2603 D.Diag(diag::err_drv_invalid_value)
2604 << A->getAsString(Args) << A->getValue();
2608 case options::OPT_fdenormal_fp_math_f32_EQ:
2609 DenormalFP32Math = llvm::parseDenormalFPAttribute(A->getValue());
2610 if (!DenormalFP32Math.isValid()) {
2611 D.Diag(diag::err_drv_invalid_value)
2612 << A->getAsString(Args) << A->getValue();
2616 // Validate and pass through -ffp-contract option.
2617 case options::OPT_ffp_contract: {
2618 StringRef Val = A->getValue();
2619 if (PreciseFPModel) {
2620 // -ffp-model=precise enables ffp-contract=fast as a side effect
2621 // the FPContract value has already been set to a string literal
2622 // and the Val string isn't a pertinent value.
2624 } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off"))
2627 D.Diag(diag::err_drv_unsupported_option_argument)
2628 << A->getOption().getName() << Val;
2632 // Validate and pass through -ffp-model option.
2633 case options::OPT_ffp_model_EQ:
2634 // This should only occur in the error case
2635 // since the optID has been replaced by a more granular
2636 // floating point option.
2639 // Validate and pass through -ffp-exception-behavior option.
2640 case options::OPT_ffp_exception_behavior_EQ: {
2641 StringRef Val = A->getValue();
2642 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2643 !FPExceptionBehavior.equals(Val))
2644 // Warn that previous value of option is overridden.
2645 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2646 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2647 << Args.MakeArgString("-ffp-exception-behavior=" + Val);
2648 TrappingMath = TrappingMathPresent = false;
2649 if (Val.equals("ignore") || Val.equals("maytrap"))
2650 FPExceptionBehavior = Val;
2651 else if (Val.equals("strict")) {
2652 FPExceptionBehavior = Val;
2653 TrappingMath = TrappingMathPresent = true;
2655 D.Diag(diag::err_drv_unsupported_option_argument)
2656 << A->getOption().getName() << Val;
2660 case options::OPT_ffinite_math_only:
2664 case options::OPT_fno_finite_math_only:
2669 case options::OPT_funsafe_math_optimizations:
2670 AssociativeMath = true;
2671 ReciprocalMath = true;
2672 SignedZeros = false;
2673 TrappingMath = false;
2674 FPExceptionBehavior = "";
2676 case options::OPT_fno_unsafe_math_optimizations:
2677 AssociativeMath = false;
2678 ReciprocalMath = false;
2680 TrappingMath = true;
2681 FPExceptionBehavior = "strict";
2683 // The target may have opted to flush by default, so force IEEE.
2684 DenormalFPMath = llvm::DenormalMode::getIEEE();
2685 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2688 case options::OPT_Ofast:
2689 // If -Ofast is the optimization level, then -ffast-math should be enabled
2693 case options::OPT_ffast_math:
2697 AssociativeMath = true;
2698 ReciprocalMath = true;
2699 SignedZeros = false;
2700 TrappingMath = false;
2701 RoundingFPMath = false;
2702 // If fast-math is set then set the fp-contract mode to fast.
2703 FPContract = "fast";
2705 case options::OPT_fno_fast_math:
2708 // Turning on -ffast-math (with either flag) removes the need for
2709 // MathErrno. However, turning *off* -ffast-math merely restores the
2710 // toolchain default (which may be false).
2711 MathErrno = TC.IsMathErrnoDefault();
2712 AssociativeMath = false;
2713 ReciprocalMath = false;
2715 TrappingMath = false;
2716 RoundingFPMath = false;
2717 // -fno_fast_math restores default denormal and fpcontract handling
2718 DenormalFPMath = DefaultDenormalFPMath;
2719 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2723 if (StrictFPModel) {
2724 // If -ffp-model=strict has been specified on command line but
2725 // subsequent options conflict then emit warning diagnostic.
2726 if (HonorINFs && HonorNaNs &&
2727 !AssociativeMath && !ReciprocalMath &&
2728 SignedZeros && TrappingMath && RoundingFPMath &&
2729 (FPContract.equals("off") || FPContract.empty()) &&
2730 DenormalFPMath == llvm::DenormalMode::getIEEE() &&
2731 DenormalFP32Math == llvm::DenormalMode::getIEEE())
2732 // OK: Current Arg doesn't conflict with -ffp-model=strict
2735 StrictFPModel = false;
2737 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2738 << "-ffp-model=strict" <<
2739 ((A->getNumValues() == 0) ? A->getSpelling()
2740 : Args.MakeArgString(A->getSpelling() + A->getValue()));
2744 // If we handled this option claim it
2749 CmdArgs.push_back("-menable-no-infs");
2752 CmdArgs.push_back("-menable-no-nans");
2755 CmdArgs.push_back("-fmath-errno");
2757 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2759 CmdArgs.push_back("-menable-unsafe-fp-math");
2762 CmdArgs.push_back("-fno-signed-zeros");
2764 if (AssociativeMath && !SignedZeros && !TrappingMath)
2765 CmdArgs.push_back("-mreassociate");
2768 CmdArgs.push_back("-freciprocal-math");
2771 // FP Exception Behavior is also set to strict
2772 assert(FPExceptionBehavior.equals("strict"));
2773 CmdArgs.push_back("-ftrapping-math");
2774 } else if (TrappingMathPresent)
2775 CmdArgs.push_back("-fno-trapping-math");
2777 // The default is IEEE.
2778 if (DenormalFPMath != llvm::DenormalMode::getIEEE()) {
2779 llvm::SmallString<64> DenormFlag;
2780 llvm::raw_svector_ostream ArgStr(DenormFlag);
2781 ArgStr << "-fdenormal-fp-math=" << DenormalFPMath;
2782 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));
2785 // Add f32 specific denormal mode flag if it's different.
2786 if (DenormalFP32Math != DenormalFPMath) {
2787 llvm::SmallString<64> DenormFlag;
2788 llvm::raw_svector_ostream ArgStr(DenormFlag);
2789 ArgStr << "-fdenormal-fp-math-f32=" << DenormalFP32Math;
2790 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));
2793 if (!FPContract.empty())
2794 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2796 if (!RoundingFPMath)
2797 CmdArgs.push_back(Args.MakeArgString("-fno-rounding-math"));
2799 if (RoundingFPMath && RoundingMathPresent)
2800 CmdArgs.push_back(Args.MakeArgString("-frounding-math"));
2802 if (!FPExceptionBehavior.empty())
2803 CmdArgs.push_back(Args.MakeArgString("-ffp-exception-behavior=" +
2804 FPExceptionBehavior));
2806 ParseMRecip(D, Args, CmdArgs);
2808 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2809 // individual features enabled by -ffast-math instead of the option itself as
2810 // that's consistent with gcc's behaviour.
2811 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2812 ReciprocalMath && !SignedZeros && !TrappingMath && !RoundingFPMath) {
2813 CmdArgs.push_back("-ffast-math");
2814 if (FPModel.equals("fast")) {
2815 if (FPContract.equals("fast"))
2816 // All set, do nothing.
2818 else if (FPContract.empty())
2819 // Enable -ffp-contract=fast
2820 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=fast"));
2822 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2823 << "-ffp-model=fast"
2824 << Args.MakeArgString("-ffp-contract=" + FPContract);
2828 // Handle __FINITE_MATH_ONLY__ similarly.
2829 if (!HonorINFs && !HonorNaNs)
2830 CmdArgs.push_back("-ffinite-math-only");
2832 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2833 CmdArgs.push_back("-mfpmath");
2834 CmdArgs.push_back(A->getValue());
2837 // Disable a codegen optimization for floating-point casts.
2838 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2839 options::OPT_fstrict_float_cast_overflow, false))
2840 CmdArgs.push_back("-fno-strict-float-cast-overflow");
2843 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2844 const llvm::Triple &Triple,
2845 const InputInfo &Input) {
2846 // Enable region store model by default.
2847 CmdArgs.push_back("-analyzer-store=region");
2849 // Treat blocks as analysis entry points.
2850 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2852 // Add default argument set.
2853 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2854 CmdArgs.push_back("-analyzer-checker=core");
2855 CmdArgs.push_back("-analyzer-checker=apiModeling");
2857 if (!Triple.isWindowsMSVCEnvironment()) {
2858 CmdArgs.push_back("-analyzer-checker=unix");
2860 // Enable "unix" checkers that also work on Windows.
2861 CmdArgs.push_back("-analyzer-checker=unix.API");
2862 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2863 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2864 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2865 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2866 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2869 // Disable some unix checkers for PS4.
2870 if (Triple.isPS4CPU()) {
2871 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2872 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2875 if (Triple.isOSDarwin()) {
2876 CmdArgs.push_back("-analyzer-checker=osx");
2878 "-analyzer-checker=security.insecureAPI.decodeValueOfObjCType");
2880 else if (Triple.isOSFuchsia())
2881 CmdArgs.push_back("-analyzer-checker=fuchsia");
2883 CmdArgs.push_back("-analyzer-checker=deadcode");
2885 if (types::isCXX(Input.getType()))
2886 CmdArgs.push_back("-analyzer-checker=cplusplus");
2888 if (!Triple.isPS4CPU()) {
2889 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2890 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2891 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2892 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2893 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2894 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2897 // Default nullability checks.
2898 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2899 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2902 // Set the output format. The default is plist, for (lame) historical reasons.
2903 CmdArgs.push_back("-analyzer-output");
2904 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2905 CmdArgs.push_back(A->getValue());
2907 CmdArgs.push_back("plist");
2909 // Disable the presentation of standard compiler warnings when using
2910 // --analyze. We only want to show static analyzer diagnostics or frontend
2912 CmdArgs.push_back("-w");
2914 // Add -Xanalyzer arguments when running as analyzer.
2915 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2918 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2919 ArgStringList &CmdArgs, bool KernelOrKext) {
2920 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2922 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2923 // doesn't even have a stack!
2924 if (EffectiveTriple.isNVPTX())
2927 // -stack-protector=0 is default.
2928 unsigned StackProtectorLevel = 0;
2929 unsigned DefaultStackProtectorLevel =
2930 TC.GetDefaultStackProtectorLevel(KernelOrKext);
2932 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2933 options::OPT_fstack_protector_all,
2934 options::OPT_fstack_protector_strong,
2935 options::OPT_fstack_protector)) {
2936 if (A->getOption().matches(options::OPT_fstack_protector))
2937 StackProtectorLevel =
2938 std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2939 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2940 StackProtectorLevel = LangOptions::SSPStrong;
2941 else if (A->getOption().matches(options::OPT_fstack_protector_all))
2942 StackProtectorLevel = LangOptions::SSPReq;
2944 StackProtectorLevel = DefaultStackProtectorLevel;
2947 if (StackProtectorLevel) {
2948 CmdArgs.push_back("-stack-protector");
2949 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2952 // --param ssp-buffer-size=
2953 for (const Arg *A : Args.filtered(options::OPT__param)) {
2954 StringRef Str(A->getValue());
2955 if (Str.startswith("ssp-buffer-size=")) {
2956 if (StackProtectorLevel) {
2957 CmdArgs.push_back("-stack-protector-buffer-size");
2958 // FIXME: Verify the argument is a valid integer.
2959 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2966 static void RenderSCPOptions(const ToolChain &TC, const ArgList &Args,
2967 ArgStringList &CmdArgs) {
2968 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2970 if (!EffectiveTriple.isOSLinux())
2973 if (!EffectiveTriple.isX86() && !EffectiveTriple.isSystemZ() &&
2974 !EffectiveTriple.isPPC64())
2977 if (Args.hasFlag(options::OPT_fstack_clash_protection,
2978 options::OPT_fno_stack_clash_protection, false))
2979 CmdArgs.push_back("-fstack-clash-protection");
2982 static void RenderTrivialAutoVarInitOptions(const Driver &D,
2983 const ToolChain &TC,
2984 const ArgList &Args,
2985 ArgStringList &CmdArgs) {
2986 auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
2987 StringRef TrivialAutoVarInit = "";
2989 for (const Arg *A : Args) {
2990 switch (A->getOption().getID()) {
2993 case options::OPT_ftrivial_auto_var_init: {
2995 StringRef Val = A->getValue();
2996 if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
2997 TrivialAutoVarInit = Val;
2999 D.Diag(diag::err_drv_unsupported_option_argument)
3000 << A->getOption().getName() << Val;
3006 if (TrivialAutoVarInit.empty())
3007 switch (DefaultTrivialAutoVarInit) {
3008 case LangOptions::TrivialAutoVarInitKind::Uninitialized:
3010 case LangOptions::TrivialAutoVarInitKind::Pattern:
3011 TrivialAutoVarInit = "pattern";
3013 case LangOptions::TrivialAutoVarInitKind::Zero:
3014 TrivialAutoVarInit = "zero";
3018 if (!TrivialAutoVarInit.empty()) {
3019 if (TrivialAutoVarInit == "zero" && !Args.hasArg(options::OPT_enable_trivial_var_init_zero))
3020 D.Diag(diag::err_drv_trivial_auto_var_init_zero_disabled);
3022 Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
3026 Args.getLastArg(options::OPT_ftrivial_auto_var_init_stop_after)) {
3027 if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||
3029 Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==
3031 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_missing_dependency);
3033 StringRef Val = A->getValue();
3034 if (std::stoi(Val.str()) <= 0)
3035 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_invalid_value);
3037 Args.MakeArgString("-ftrivial-auto-var-init-stop-after=" + Val));
3041 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
3042 // cl-denorms-are-zero is not forwarded. It is translated into a generic flag
3043 // for denormal flushing handling based on the target.
3044 const unsigned ForwardedArguments[] = {
3045 options::OPT_cl_opt_disable,
3046 options::OPT_cl_strict_aliasing,
3047 options::OPT_cl_single_precision_constant,
3048 options::OPT_cl_finite_math_only,
3049 options::OPT_cl_kernel_arg_info,
3050 options::OPT_cl_unsafe_math_optimizations,
3051 options::OPT_cl_fast_relaxed_math,
3052 options::OPT_cl_mad_enable,
3053 options::OPT_cl_no_signed_zeros,
3054 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
3055 options::OPT_cl_uniform_work_group_size
3058 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
3059 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
3060 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
3063 for (const auto &Arg : ForwardedArguments)
3064 if (const auto *A = Args.getLastArg(Arg))
3065 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
3068 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
3069 ArgStringList &CmdArgs) {
3070 bool ARCMTEnabled = false;
3071 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
3072 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
3073 options::OPT_ccc_arcmt_modify,
3074 options::OPT_ccc_arcmt_migrate)) {
3075 ARCMTEnabled = true;
3076 switch (A->getOption().getID()) {
3077 default: llvm_unreachable("missed a case");
3078 case options::OPT_ccc_arcmt_check:
3079 CmdArgs.push_back("-arcmt-check");
3081 case options::OPT_ccc_arcmt_modify:
3082 CmdArgs.push_back("-arcmt-modify");
3084 case options::OPT_ccc_arcmt_migrate:
3085 CmdArgs.push_back("-arcmt-migrate");
3086 CmdArgs.push_back("-mt-migrate-directory");
3087 CmdArgs.push_back(A->getValue());
3089 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
3090 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
3095 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
3096 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
3097 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
3100 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
3102 D.Diag(diag::err_drv_argument_not_allowed_with)
3103 << A->getAsString(Args) << "-ccc-arcmt-migrate";
3105 CmdArgs.push_back("-mt-migrate-directory");
3106 CmdArgs.push_back(A->getValue());
3108 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
3109 options::OPT_objcmt_migrate_subscripting,
3110 options::OPT_objcmt_migrate_property)) {
3111 // None specified, means enable them all.
3112 CmdArgs.push_back("-objcmt-migrate-literals");
3113 CmdArgs.push_back("-objcmt-migrate-subscripting");
3114 CmdArgs.push_back("-objcmt-migrate-property");
3116 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
3117 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
3118 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
3121 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
3122 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
3123 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
3124 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
3125 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
3126 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
3127 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
3128 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
3129 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
3130 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
3131 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
3132 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
3133 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
3134 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
3135 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
3136 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
3140 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
3141 const ArgList &Args, ArgStringList &CmdArgs) {
3142 // -fbuiltin is default unless -mkernel is used.
3144 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
3145 !Args.hasArg(options::OPT_mkernel));
3147 CmdArgs.push_back("-fno-builtin");
3149 // -ffreestanding implies -fno-builtin.
3150 if (Args.hasArg(options::OPT_ffreestanding))
3151 UseBuiltins = false;
3153 // Process the -fno-builtin-* options.
3154 for (const auto &Arg : Args) {
3155 const Option &O = Arg->getOption();
3156 if (!O.matches(options::OPT_fno_builtin_))
3161 // If -fno-builtin is specified, then there's no need to pass the option to
3166 StringRef FuncName = Arg->getValue();
3167 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
3170 // le32-specific flags:
3171 // -fno-math-builtin: clang should not convert math builtins to intrinsics
3173 if (TC.getArch() == llvm::Triple::le32)
3174 CmdArgs.push_back("-fno-math-builtin");
3177 bool Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
3178 if (llvm::sys::path::cache_directory(Result)) {
3179 llvm::sys::path::append(Result, "clang");
3180 llvm::sys::path::append(Result, "ModuleCache");
3186 static void RenderModulesOptions(Compilation &C, const Driver &D,
3187 const ArgList &Args, const InputInfo &Input,
3188 const InputInfo &Output,
3189 ArgStringList &CmdArgs, bool &HaveModules) {
3190 // -fmodules enables the use of precompiled modules (off by default).
3191 // Users can pass -fno-cxx-modules to turn off modules support for
3192 // C++/Objective-C++ programs.
3193 bool HaveClangModules = false;
3194 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
3195 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
3196 options::OPT_fno_cxx_modules, true);
3197 if (AllowedInCXX || !types::isCXX(Input.getType())) {
3198 CmdArgs.push_back("-fmodules");
3199 HaveClangModules = true;
3203 HaveModules |= HaveClangModules;
3204 if (Args.hasArg(options::OPT_fmodules_ts)) {
3205 CmdArgs.push_back("-fmodules-ts");
3209 // -fmodule-maps enables implicit reading of module map files. By default,
3210 // this is enabled if we are using Clang's flavor of precompiled modules.
3211 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
3212 options::OPT_fno_implicit_module_maps, HaveClangModules))
3213 CmdArgs.push_back("-fimplicit-module-maps");
3215 // -fmodules-decluse checks that modules used are declared so (off by default)
3216 if (Args.hasFlag(options::OPT_fmodules_decluse,
3217 options::OPT_fno_modules_decluse, false))
3218 CmdArgs.push_back("-fmodules-decluse");
3220 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
3221 // all #included headers are part of modules.
3222 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
3223 options::OPT_fno_modules_strict_decluse, false))
3224 CmdArgs.push_back("-fmodules-strict-decluse");
3226 // -fno-implicit-modules turns off implicitly compiling modules on demand.
3227 bool ImplicitModules = false;
3228 if (!Args.hasFlag(options::OPT_fimplicit_modules,
3229 options::OPT_fno_implicit_modules, HaveClangModules)) {
3231 CmdArgs.push_back("-fno-implicit-modules");
3232 } else if (HaveModules) {
3233 ImplicitModules = true;
3234 // -fmodule-cache-path specifies where our implicitly-built module files
3235 // should be written.
3236 SmallString<128> Path;
3237 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
3238 Path = A->getValue();
3240 bool HasPath = true;
3241 if (C.isForDiagnostics()) {
3242 // When generating crash reports, we want to emit the modules along with
3243 // the reproduction sources, so we ignore any provided module path.
3244 Path = Output.getFilename();
3245 llvm::sys::path::replace_extension(Path, ".cache");
3246 llvm::sys::path::append(Path, "modules");
3247 } else if (Path.empty()) {
3248 // No module path was provided: use the default.
3249 HasPath = Driver::getDefaultModuleCachePath(Path);
3252 // `HasPath` will only be false if getDefaultModuleCachePath() fails.
3253 // That being said, that failure is unlikely and not caching is harmless.
3255 const char Arg[] = "-fmodules-cache-path=";
3256 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
3257 CmdArgs.push_back(Args.MakeArgString(Path));
3262 // -fprebuilt-module-path specifies where to load the prebuilt module files.
3263 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
3264 CmdArgs.push_back(Args.MakeArgString(
3265 std::string("-fprebuilt-module-path=") + A->getValue()));
3268 if (Args.hasFlag(options::OPT_fmodules_validate_input_files_content,
3269 options::OPT_fno_modules_validate_input_files_content,
3271 CmdArgs.push_back("-fvalidate-ast-input-files-content");
3274 // -fmodule-name specifies the module that is currently being built (or
3275 // used for header checking by -fmodule-maps).
3276 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
3278 // -fmodule-map-file can be used to specify files containing module
3280 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
3282 // -fbuiltin-module-map can be used to load the clang
3283 // builtin headers modulemap file.
3284 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
3285 SmallString<128> BuiltinModuleMap(D.ResourceDir);
3286 llvm::sys::path::append(BuiltinModuleMap, "include");
3287 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
3288 if (llvm::sys::fs::exists(BuiltinModuleMap))
3290 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
3293 // The -fmodule-file=<name>=<file> form specifies the mapping of module
3294 // names to precompiled module files (the module is loaded only if used).
3295 // The -fmodule-file=<file> form can be used to unconditionally load
3296 // precompiled module files (whether used or not).
3298 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
3300 Args.ClaimAllArgs(options::OPT_fmodule_file);
3302 // When building modules and generating crashdumps, we need to dump a module
3303 // dependency VFS alongside the output.
3304 if (HaveClangModules && C.isForDiagnostics()) {
3305 SmallString<128> VFSDir(Output.getFilename());
3306 llvm::sys::path::replace_extension(VFSDir, ".cache");
3307 // Add the cache directory as a temp so the crash diagnostics pick it up.
3308 C.addTempFile(Args.MakeArgString(VFSDir));
3310 llvm::sys::path::append(VFSDir, "vfs");
3311 CmdArgs.push_back("-module-dependency-dir");
3312 CmdArgs.push_back(Args.MakeArgString(VFSDir));
3315 if (HaveClangModules)
3316 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
3318 // Pass through all -fmodules-ignore-macro arguments.
3319 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
3320 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
3321 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
3323 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
3325 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
3326 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
3327 D.Diag(diag::err_drv_argument_not_allowed_with)
3328 << A->getAsString(Args) << "-fbuild-session-timestamp";
3330 llvm::sys::fs::file_status Status;
3331 if (llvm::sys::fs::status(A->getValue(), Status))
3332 D.Diag(diag::err_drv_no_such_file) << A->getValue();
3334 Args.MakeArgString("-fbuild-session-timestamp=" +
3335 Twine((uint64_t)Status.getLastModificationTime()
3340 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
3341 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
3342 options::OPT_fbuild_session_file))
3343 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
3345 Args.AddLastArg(CmdArgs,
3346 options::OPT_fmodules_validate_once_per_build_session);
3349 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
3350 options::OPT_fno_modules_validate_system_headers,
3352 CmdArgs.push_back("-fmodules-validate-system-headers");
3354 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
3357 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
3358 ArgStringList &CmdArgs) {
3359 // -fsigned-char is default.
3360 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
3361 options::OPT_fno_signed_char,
3362 options::OPT_funsigned_char,
3363 options::OPT_fno_unsigned_char)) {
3364 if (A->getOption().matches(options::OPT_funsigned_char) ||
3365 A->getOption().matches(options::OPT_fno_signed_char)) {
3366 CmdArgs.push_back("-fno-signed-char");
3368 } else if (!isSignedCharDefault(T)) {
3369 CmdArgs.push_back("-fno-signed-char");
3372 // The default depends on the language standard.
3373 Args.AddLastArg(CmdArgs, options::OPT_fchar8__t, options::OPT_fno_char8__t);
3375 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
3376 options::OPT_fno_short_wchar)) {
3377 if (A->getOption().matches(options::OPT_fshort_wchar)) {
3378 CmdArgs.push_back("-fwchar-type=short");
3379 CmdArgs.push_back("-fno-signed-wchar");
3381 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
3382 CmdArgs.push_back("-fwchar-type=int");
3383 if (IsARM && !(T.isOSWindows() || T.isOSNetBSD() ||
3385 CmdArgs.push_back("-fno-signed-wchar");
3387 CmdArgs.push_back("-fsigned-wchar");
3392 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
3393 const llvm::Triple &T, const ArgList &Args,
3394 ObjCRuntime &Runtime, bool InferCovariantReturns,
3395 const InputInfo &Input, ArgStringList &CmdArgs) {
3396 const llvm::Triple::ArchType Arch = TC.getArch();
3398 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
3399 // is the default. Except for deployment target of 10.5, next runtime is
3400 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
3401 if (Runtime.isNonFragile()) {
3402 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
3403 options::OPT_fno_objc_legacy_dispatch,
3404 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
3405 if (TC.UseObjCMixedDispatch())
3406 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
3408 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
3412 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
3413 // to do Array/Dictionary subscripting by default.
3414 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
3415 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
3416 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
3418 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
3419 // NOTE: This logic is duplicated in ToolChains.cpp.
3420 if (isObjCAutoRefCount(Args)) {
3423 CmdArgs.push_back("-fobjc-arc");
3425 // FIXME: It seems like this entire block, and several around it should be
3426 // wrapped in isObjC, but for now we just use it here as this is where it
3427 // was being used previously.
3428 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
3429 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
3430 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
3432 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
3435 // Allow the user to enable full exceptions code emission.
3436 // We default off for Objective-C, on for Objective-C++.
3437 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
3438 options::OPT_fno_objc_arc_exceptions,
3439 /*Default=*/types::isCXX(Input.getType())))
3440 CmdArgs.push_back("-fobjc-arc-exceptions");
3443 // Silence warning for full exception code emission options when explicitly
3444 // set to use no ARC.
3445 if (Args.hasArg(options::OPT_fno_objc_arc)) {
3446 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
3447 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
3450 // Allow the user to control whether messages can be converted to runtime
3452 if (types::isObjC(Input.getType())) {
3453 auto *Arg = Args.getLastArg(
3454 options::OPT_fobjc_convert_messages_to_runtime_calls,
3455 options::OPT_fno_objc_convert_messages_to_runtime_calls);
3457 Arg->getOption().matches(
3458 options::OPT_fno_objc_convert_messages_to_runtime_calls))
3459 CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
3462 // -fobjc-infer-related-result-type is the default, except in the Objective-C
3464 if (InferCovariantReturns)
3465 CmdArgs.push_back("-fno-objc-infer-related-result-type");
3467 // Pass down -fobjc-weak or -fno-objc-weak if present.
3468 if (types::isObjC(Input.getType())) {
3470 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
3473 } else if (!Runtime.allowsWeak()) {
3474 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
3475 D.Diag(diag::err_objc_weak_unsupported);
3477 WeakArg->render(Args, CmdArgs);
3482 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
3483 ArgStringList &CmdArgs) {
3484 bool CaretDefault = true;
3485 bool ColumnDefault = true;
3487 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
3488 options::OPT__SLASH_diagnostics_column,
3489 options::OPT__SLASH_diagnostics_caret)) {
3490 switch (A->getOption().getID()) {
3491 case options::OPT__SLASH_diagnostics_caret:
3492 CaretDefault = true;
3493 ColumnDefault = true;
3495 case options::OPT__SLASH_diagnostics_column:
3496 CaretDefault = false;
3497 ColumnDefault = true;
3499 case options::OPT__SLASH_diagnostics_classic:
3500 CaretDefault = false;
3501 ColumnDefault = false;
3506 // -fcaret-diagnostics is default.
3507 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
3508 options::OPT_fno_caret_diagnostics, CaretDefault))
3509 CmdArgs.push_back("-fno-caret-diagnostics");
3511 // -fdiagnostics-fixit-info is default, only pass non-default.
3512 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
3513 options::OPT_fno_diagnostics_fixit_info))
3514 CmdArgs.push_back("-fno-diagnostics-fixit-info");
3516 // Enable -fdiagnostics-show-option by default.
3517 if (!Args.hasFlag(options::OPT_fdiagnostics_show_option,
3518 options::OPT_fno_diagnostics_show_option, true))
3519 CmdArgs.push_back("-fno-diagnostics-show-option");
3522 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
3523 CmdArgs.push_back("-fdiagnostics-show-category");
3524 CmdArgs.push_back(A->getValue());
3527 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
3528 options::OPT_fno_diagnostics_show_hotness, false))
3529 CmdArgs.push_back("-fdiagnostics-show-hotness");
3532 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
3534 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
3535 CmdArgs.push_back(Args.MakeArgString(Opt));
3538 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
3539 CmdArgs.push_back("-fdiagnostics-format");
3540 CmdArgs.push_back(A->getValue());
3543 if (const Arg *A = Args.getLastArg(
3544 options::OPT_fdiagnostics_show_note_include_stack,
3545 options::OPT_fno_diagnostics_show_note_include_stack)) {
3546 const Option &O = A->getOption();
3547 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
3548 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
3550 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
3553 // Color diagnostics are parsed by the driver directly from argv and later
3554 // re-parsed to construct this job; claim any possible color diagnostic here
3555 // to avoid warn_drv_unused_argument and diagnose bad
3556 // OPT_fdiagnostics_color_EQ values.
3557 for (const Arg *A : Args) {
3558 const Option &O = A->getOption();
3559 if (!O.matches(options::OPT_fcolor_diagnostics) &&
3560 !O.matches(options::OPT_fdiagnostics_color) &&
3561 !O.matches(options::OPT_fno_color_diagnostics) &&
3562 !O.matches(options::OPT_fno_diagnostics_color) &&
3563 !O.matches(options::OPT_fdiagnostics_color_EQ))
3566 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
3567 StringRef Value(A->getValue());
3568 if (Value != "always" && Value != "never" && Value != "auto")
3569 D.Diag(diag::err_drv_clang_unsupported)
3570 << ("-fdiagnostics-color=" + Value).str();
3575 if (D.getDiags().getDiagnosticOptions().ShowColors)
3576 CmdArgs.push_back("-fcolor-diagnostics");
3578 if (Args.hasArg(options::OPT_fansi_escape_codes))
3579 CmdArgs.push_back("-fansi-escape-codes");
3581 if (!Args.hasFlag(options::OPT_fshow_source_location,
3582 options::OPT_fno_show_source_location))
3583 CmdArgs.push_back("-fno-show-source-location");
3585 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
3586 CmdArgs.push_back("-fdiagnostics-absolute-paths");
3588 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
3590 CmdArgs.push_back("-fno-show-column");
3592 if (!Args.hasFlag(options::OPT_fspell_checking,
3593 options::OPT_fno_spell_checking))
3594 CmdArgs.push_back("-fno-spell-checking");
3597 enum class DwarfFissionKind { None, Split, Single };
3599 static DwarfFissionKind getDebugFissionKind(const Driver &D,
3600 const ArgList &Args, Arg *&Arg) {
3602 Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ);
3604 return DwarfFissionKind::None;
3606 if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
3607 return DwarfFissionKind::Split;
3609 StringRef Value = Arg->getValue();
3610 if (Value == "split")
3611 return DwarfFissionKind::Split;
3612 if (Value == "single")
3613 return DwarfFissionKind::Single;
3615 D.Diag(diag::err_drv_unsupported_option_argument)
3616 << Arg->getOption().getName() << Arg->getValue();
3617 return DwarfFissionKind::None;
3620 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
3621 const llvm::Triple &T, const ArgList &Args,
3622 bool EmitCodeView, ArgStringList &CmdArgs,
3623 codegenoptions::DebugInfoKind &DebugInfoKind,
3624 DwarfFissionKind &DwarfFission) {
3625 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3626 options::OPT_fno_debug_info_for_profiling, false) &&
3627 checkDebugInfoOption(
3628 Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
3629 CmdArgs.push_back("-fdebug-info-for-profiling");
3631 // The 'g' groups options involve a somewhat intricate sequence of decisions
3632 // about what to pass from the driver to the frontend, but by the time they
3633 // reach cc1 they've been factored into three well-defined orthogonal choices:
3634 // * what level of debug info to generate
3635 // * what dwarf version to write
3636 // * what debugger tuning to use
3637 // This avoids having to monkey around further in cc1 other than to disable
3638 // codeview if not running in a Windows environment. Perhaps even that
3639 // decision should be made in the driver as well though.
3640 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
3642 bool SplitDWARFInlining =
3643 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
3644 options::OPT_fno_split_dwarf_inlining, false);
3646 Args.ClaimAllArgs(options::OPT_g_Group);
3649 DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
3651 if (DwarfFission != DwarfFissionKind::None &&
3652 !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
3653 DwarfFission = DwarfFissionKind::None;
3654 SplitDWARFInlining = false;
3658 Args.getLastArg(options::OPT_g_Group, options::OPT_gsplit_dwarf,
3659 options::OPT_gsplit_dwarf_EQ)) {
3660 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3662 // If the last option explicitly specified a debug-info level, use it.
3663 if (checkDebugInfoOption(A, Args, D, TC) &&
3664 A->getOption().matches(options::OPT_gN_Group)) {
3665 DebugInfoKind = DebugLevelToInfoKind(*A);
3666 // For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
3667 // complicated if you've disabled inline info in the skeleton CUs
3668 // (SplitDWARFInlining) - then there's value in composing split-dwarf and
3669 // line-tables-only, so let those compose naturally in that case.
3670 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
3671 DebugInfoKind == codegenoptions::DebugDirectivesOnly ||
3672 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
3673 SplitDWARFInlining))
3674 DwarfFission = DwarfFissionKind::None;
3678 // If a debugger tuning argument appeared, remember it.
3680 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
3681 if (checkDebugInfoOption(A, Args, D, TC)) {
3682 if (A->getOption().matches(options::OPT_glldb))
3683 DebuggerTuning = llvm::DebuggerKind::LLDB;
3684 else if (A->getOption().matches(options::OPT_gsce))
3685 DebuggerTuning = llvm::DebuggerKind::SCE;
3687 DebuggerTuning = llvm::DebuggerKind::GDB;
3691 // If a -gdwarf argument appeared, remember it.
3692 const Arg *GDwarfN = Args.getLastArg(
3693 options::OPT_gdwarf_2, options::OPT_gdwarf_3, options::OPT_gdwarf_4,
3694 options::OPT_gdwarf_5, options::OPT_gdwarf);
3695 bool EmitDwarf = false;
3697 if (checkDebugInfoOption(GDwarfN, Args, D, TC))
3703 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
3704 if (checkDebugInfoOption(A, Args, D, TC))
3705 EmitCodeView = true;
3708 // If the user asked for debug info but did not explicitly specify -gcodeview
3709 // or -gdwarf, ask the toolchain for the default format.
3710 if (!EmitCodeView && !EmitDwarf &&
3711 DebugInfoKind != codegenoptions::NoDebugInfo) {
3712 switch (TC.getDefaultDebugFormat()) {
3713 case codegenoptions::DIF_CodeView:
3714 EmitCodeView = true;
3716 case codegenoptions::DIF_DWARF:
3722 unsigned DWARFVersion = 0;
3723 unsigned DefaultDWARFVersion = ParseDebugDefaultVersion(TC, Args);
3725 // Start with the platform default DWARF version
3726 DWARFVersion = TC.GetDefaultDwarfVersion();
3727 assert(DWARFVersion && "toolchain default DWARF version must be nonzero");
3729 // If the user specified a default DWARF version, that takes precedence
3730 // over the platform default.
3731 if (DefaultDWARFVersion)
3732 DWARFVersion = DefaultDWARFVersion;
3734 // Override with a user-specified DWARF version
3736 if (auto ExplicitVersion = DwarfVersionNum(GDwarfN->getSpelling()))
3737 DWARFVersion = ExplicitVersion;
3740 // -gline-directives-only supported only for the DWARF debug info.
3741 if (DWARFVersion == 0 && DebugInfoKind == codegenoptions::DebugDirectivesOnly)
3742 DebugInfoKind = codegenoptions::NoDebugInfo;
3744 // We ignore flag -gstrict-dwarf for now.
3745 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
3746 Args.ClaimAllArgs(options::OPT_g_flags_Group);
3748 // Column info is included by default for everything except SCE and
3749 // CodeView. Clang doesn't track end columns, just starting columns, which,
3750 // in theory, is fine for CodeView (and PDB). In practice, however, the
3751 // Microsoft debuggers don't handle missing end columns well, so it's better
3752 // not to include any column info.
3753 if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
3754 (void)checkDebugInfoOption(A, Args, D, TC);
3755 if (!Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
3756 !EmitCodeView && DebuggerTuning != llvm::DebuggerKind::SCE))
3757 CmdArgs.push_back("-gno-column-info");
3759 // FIXME: Move backend command line options to the module.
3760 // If -gline-tables-only or -gline-directives-only is the last option it wins.
3761 if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
3762 if (checkDebugInfoOption(A, Args, D, TC)) {
3763 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
3764 DebugInfoKind != codegenoptions::DebugDirectivesOnly) {
3765 DebugInfoKind = codegenoptions::LimitedDebugInfo;
3766 CmdArgs.push_back("-dwarf-ext-refs");
3767 CmdArgs.push_back("-fmodule-format=obj");
3771 if (T.isOSBinFormatELF() && !SplitDWARFInlining)
3772 CmdArgs.push_back("-fno-split-dwarf-inlining");
3774 // After we've dealt with all combinations of things that could
3775 // make DebugInfoKind be other than None or DebugLineTablesOnly,
3776 // figure out if we need to "upgrade" it to standalone debug info.
3777 // We parse these two '-f' options whether or not they will be used,
3778 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3779 bool NeedFullDebug = Args.hasFlag(
3780 options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,
3781 DebuggerTuning == llvm::DebuggerKind::LLDB ||
3782 TC.GetDefaultStandaloneDebug());
3783 if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
3784 (void)checkDebugInfoOption(A, Args, D, TC);
3785 if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
3786 DebugInfoKind = codegenoptions::FullDebugInfo;
3788 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
3790 // Source embedding is a vendor extension to DWARF v5. By now we have
3791 // checked if a DWARF version was stated explicitly, and have otherwise
3792 // fallen back to the target default, so if this is still not at least 5
3793 // we emit an error.
3794 const Arg *A = Args.getLastArg(options::OPT_gembed_source);
3795 if (DWARFVersion < 5)
3796 D.Diag(diag::err_drv_argument_only_allowed_with)
3797 << A->getAsString(Args) << "-gdwarf-5";
3798 else if (checkDebugInfoOption(A, Args, D, TC))
3799 CmdArgs.push_back("-gembed-source");
3803 CmdArgs.push_back("-gcodeview");
3805 // Emit codeview type hashes if requested.
3806 if (Args.hasFlag(options::OPT_gcodeview_ghash,
3807 options::OPT_gno_codeview_ghash, false)) {
3808 CmdArgs.push_back("-gcodeview-ghash");
3812 // Omit inline line tables if requested.
3813 if (Args.hasFlag(options::OPT_gno_inline_line_tables,
3814 options::OPT_ginline_line_tables, false)) {
3815 CmdArgs.push_back("-gno-inline-line-tables");
3818 // Adjust the debug info kind for the given toolchain.
3819 TC.adjustDebugInfoKind(DebugInfoKind, Args);
3821 // When emitting remarks, we need at least debug lines in the output.
3822 if (willEmitRemarks(Args) &&
3823 DebugInfoKind <= codegenoptions::DebugDirectivesOnly)
3824 DebugInfoKind = codegenoptions::DebugLineTablesOnly;
3826 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3829 // -fdebug-macro turns on macro debug info generation.
3830 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3832 if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
3834 CmdArgs.push_back("-debug-info-macro");
3836 // -ggnu-pubnames turns on gnu style pubnames in the backend.
3837 const auto *PubnamesArg =
3838 Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3839 options::OPT_gpubnames, options::OPT_gno_pubnames);
3840 if (DwarfFission != DwarfFissionKind::None ||
3841 (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
3843 (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
3844 !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
3845 CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
3846 options::OPT_gpubnames)
3848 : "-ggnu-pubnames");
3850 if (Args.hasFlag(options::OPT_fdebug_ranges_base_address,
3851 options::OPT_fno_debug_ranges_base_address, false)) {
3852 CmdArgs.push_back("-fdebug-ranges-base-address");
3855 // -gdwarf-aranges turns on the emission of the aranges section in the
3857 // Always enabled for SCE tuning.
3858 bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
3859 if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
3860 NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
3862 CmdArgs.push_back("-mllvm");
3863 CmdArgs.push_back("-generate-arange-section");
3866 if (Args.hasFlag(options::OPT_fforce_dwarf_frame,
3867 options::OPT_fno_force_dwarf_frame, false))
3868 CmdArgs.push_back("-fforce-dwarf-frame");
3870 if (Args.hasFlag(options::OPT_fdebug_types_section,
3871 options::OPT_fno_debug_types_section, false)) {
3872 if (!T.isOSBinFormatELF()) {
3873 D.Diag(diag::err_drv_unsupported_opt_for_target)
3874 << Args.getLastArg(options::OPT_fdebug_types_section)
3877 } else if (checkDebugInfoOption(
3878 Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
3880 CmdArgs.push_back("-mllvm");
3881 CmdArgs.push_back("-generate-type-units");
3885 // Decide how to render forward declarations of template instantiations.
3886 // SCE wants full descriptions, others just get them in the name.
3887 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3888 CmdArgs.push_back("-debug-forward-template-params");
3890 // Do we need to explicitly import anonymous namespaces into the parent
3892 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3893 CmdArgs.push_back("-dwarf-explicit-import");
3895 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
3898 void Clang::ConstructJob(Compilation &C, const JobAction &JA,
3899 const InputInfo &Output, const InputInfoList &Inputs,
3900 const ArgList &Args, const char *LinkingOutput) const {
3901 const auto &TC = getToolChain();
3902 const llvm::Triple &RawTriple = TC.getTriple();
3903 const llvm::Triple &Triple = TC.getEffectiveTriple();
3904 const std::string &TripleStr = Triple.getTriple();
3907 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3908 const Driver &D = TC.getDriver();
3909 ArgStringList CmdArgs;
3911 // Check number of inputs for sanity. We need at least one input.
3912 assert(Inputs.size() >= 1 && "Must have at least one input.");
3913 // CUDA/HIP compilation may have multiple inputs (source file + results of
3914 // device-side compilations). OpenMP device jobs also take the host IR as a
3915 // second input. Module precompilation accepts a list of header files to
3916 // include as part of the module. All other jobs are expected to have exactly
3918 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3919 bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3920 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3921 bool IsHeaderModulePrecompile = isa<HeaderModulePrecompileJobAction>(JA);
3923 // A header module compilation doesn't have a main input file, so invent a
3924 // fake one as a placeholder.
3925 const char *ModuleName = [&]{
3926 auto *ModuleNameArg = Args.getLastArg(options::OPT_fmodule_name_EQ);
3927 return ModuleNameArg ? ModuleNameArg->getValue() : "";
3929 InputInfo HeaderModuleInput(Inputs[0].getType(), ModuleName, ModuleName);
3931 const InputInfo &Input =
3932 IsHeaderModulePrecompile ? HeaderModuleInput : Inputs[0];
3934 InputInfoList ModuleHeaderInputs;
3935 const InputInfo *CudaDeviceInput = nullptr;
3936 const InputInfo *OpenMPDeviceInput = nullptr;
3937 for (const InputInfo &I : Inputs) {
3939 // This is the primary input.
3940 } else if (IsHeaderModulePrecompile &&
3941 types::getPrecompiledType(I.getType()) == types::TY_PCH) {
3942 types::ID Expected = HeaderModuleInput.getType();
3943 if (I.getType() != Expected) {
3944 D.Diag(diag::err_drv_module_header_wrong_kind)
3945 << I.getFilename() << types::getTypeName(I.getType())
3946 << types::getTypeName(Expected);
3948 ModuleHeaderInputs.push_back(I);
3949 } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
3950 CudaDeviceInput = &I;
3951 } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
3952 OpenMPDeviceInput = &I;
3954 llvm_unreachable("unexpectedly given multiple inputs");
3958 const llvm::Triple *AuxTriple =
3959 (IsCuda || IsHIP) ? TC.getAuxTriple() : nullptr;
3960 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3961 bool IsIAMCU = RawTriple.isOSIAMCU();
3963 // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3964 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3965 // Windows), we need to pass Windows-specific flags to cc1.
3966 if (IsCuda || IsHIP)
3967 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3969 // C++ is not supported for IAMCU.
3970 if (IsIAMCU && types::isCXX(Input.getType()))
3971 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3973 // Invoke ourselves in -cc1 mode.
3975 // FIXME: Implement custom jobs for internal actions.
3976 CmdArgs.push_back("-cc1");
3978 // Add the "effective" target triple.
3979 CmdArgs.push_back("-triple");
3980 CmdArgs.push_back(Args.MakeArgString(TripleStr));
3982 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3983 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3984 Args.ClaimAllArgs(options::OPT_MJ);
3985 } else if (const Arg *GenCDBFragment =
3986 Args.getLastArg(options::OPT_gen_cdb_fragment_path)) {
3987 DumpCompilationDatabaseFragmentToDir(GenCDBFragment->getValue(), C,
3988 TripleStr, Output, Input, Args);
3989 Args.ClaimAllArgs(options::OPT_gen_cdb_fragment_path);
3992 if (IsCuda || IsHIP) {
3993 // We have to pass the triple of the host if compiling for a CUDA/HIP device
3995 std::string NormalizedTriple;
3996 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
3997 JA.isDeviceOffloading(Action::OFK_HIP))
3998 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
4002 // Host-side compilation.
4004 (IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
4005 : C.getSingleOffloadToolChain<Action::OFK_HIP>())
4009 // We need to figure out which CUDA version we're compiling for, as that
4010 // determines how we load and launch GPU kernels.
4011 auto *CTC = static_cast<const toolchains::CudaToolChain *>(
4012 C.getSingleOffloadToolChain<Action::OFK_Cuda>());
4013 assert(CTC && "Expected valid CUDA Toolchain.");
4014 if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
4015 CmdArgs.push_back(Args.MakeArgString(
4016 Twine("-target-sdk-version=") +
4017 CudaVersionToString(CTC->CudaInstallation.version())));
4020 CmdArgs.push_back("-aux-triple");
4021 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
4024 if (Args.hasFlag(options::OPT_fsycl, options::OPT_fno_sycl, false)) {
4025 CmdArgs.push_back("-fsycl");
4026 CmdArgs.push_back("-fsycl-is-device");
4028 if (Arg *A = Args.getLastArg(options::OPT_sycl_std_EQ)) {
4029 A->render(Args, CmdArgs);
4031 // Ensure the default version in SYCL mode is 1.2.1 (aka 2017)
4032 CmdArgs.push_back("-sycl-std=2017");
4036 if (IsOpenMPDevice) {
4037 // We have to pass the triple of the host if compiling for an OpenMP device.
4038 std::string NormalizedTriple =
4039 C.getSingleOffloadToolChain<Action::OFK_Host>()
4042 CmdArgs.push_back("-aux-triple");
4043 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
4046 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
4047 Triple.getArch() == llvm::Triple::thumb)) {
4048 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
4049 unsigned Version = 0;
4051 Triple.getArchName().substr(Offset).consumeInteger(10, Version);
4052 if (Failure || Version < 7)
4053 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
4057 // Push all default warning arguments that are specific to
4058 // the given target. These come before user provided warning options
4060 TC.addClangWarningOptions(CmdArgs);
4062 // Select the appropriate action.
4063 RewriteKind rewriteKind = RK_None;
4065 // If CollectArgsForIntegratedAssembler() isn't called below, claim the args
4066 // it claims when not running an assembler. Otherwise, clang would emit
4067 // "argument unused" warnings for assembler flags when e.g. adding "-E" to
4068 // flags while debugging something. That'd be somewhat inconvenient, and it's
4069 // also inconsistent with most other flags -- we don't warn on
4070 // -ffunction-sections not being used in -E mode either for example, even
4071 // though it's not really used either.
4072 if (!isa<AssembleJobAction>(JA)) {
4073 // The args claimed here should match the args used in
4074 // CollectArgsForIntegratedAssembler().
4075 if (TC.useIntegratedAs()) {
4076 Args.ClaimAllArgs(options::OPT_mrelax_all);
4077 Args.ClaimAllArgs(options::OPT_mno_relax_all);
4078 Args.ClaimAllArgs(options::OPT_mincremental_linker_compatible);
4079 Args.ClaimAllArgs(options::OPT_mno_incremental_linker_compatible);
4080 switch (C.getDefaultToolChain().getArch()) {
4081 case llvm::Triple::arm:
4082 case llvm::Triple::armeb:
4083 case llvm::Triple::thumb:
4084 case llvm::Triple::thumbeb:
4085 Args.ClaimAllArgs(options::OPT_mimplicit_it_EQ);
4091 Args.ClaimAllArgs(options::OPT_Wa_COMMA);
4092 Args.ClaimAllArgs(options::OPT_Xassembler);
4095 if (isa<AnalyzeJobAction>(JA)) {
4096 assert(JA.getType() == types::TY_Plist && "Invalid output type.");
4097 CmdArgs.push_back("-analyze");
4098 } else if (isa<MigrateJobAction>(JA)) {
4099 CmdArgs.push_back("-migrate");
4100 } else if (isa<PreprocessJobAction>(JA)) {
4101 if (Output.getType() == types::TY_Dependencies)
4102 CmdArgs.push_back("-Eonly");
4104 CmdArgs.push_back("-E");
4105 if (Args.hasArg(options::OPT_rewrite_objc) &&
4106 !Args.hasArg(options::OPT_g_Group))
4107 CmdArgs.push_back("-P");
4109 } else if (isa<AssembleJobAction>(JA)) {
4110 CmdArgs.push_back("-emit-obj");
4112 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
4114 // Also ignore explicit -force_cpusubtype_ALL option.
4115 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
4116 } else if (isa<PrecompileJobAction>(JA)) {
4117 if (JA.getType() == types::TY_Nothing)
4118 CmdArgs.push_back("-fsyntax-only");
4119 else if (JA.getType() == types::TY_ModuleFile)
4120 CmdArgs.push_back(IsHeaderModulePrecompile
4121 ? "-emit-header-module"
4122 : "-emit-module-interface");
4124 CmdArgs.push_back("-emit-pch");
4125 } else if (isa<VerifyPCHJobAction>(JA)) {
4126 CmdArgs.push_back("-verify-pch");
4128 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
4129 "Invalid action for clang tool.");
4130 if (JA.getType() == types::TY_Nothing) {
4131 CmdArgs.push_back("-fsyntax-only");
4132 } else if (JA.getType() == types::TY_LLVM_IR ||
4133 JA.getType() == types::TY_LTO_IR) {
4134 CmdArgs.push_back("-emit-llvm");
4135 } else if (JA.getType() == types::TY_LLVM_BC ||
4136 JA.getType() == types::TY_LTO_BC) {
4137 CmdArgs.push_back("-emit-llvm-bc");
4138 } else if (JA.getType() == types::TY_IFS ||
4139 JA.getType() == types::TY_IFS_CPP) {
4141 Args.hasArg(options::OPT_interface_stub_version_EQ)
4142 ? Args.getLastArgValue(options::OPT_interface_stub_version_EQ)
4143 : "experimental-ifs-v2";
4144 CmdArgs.push_back("-emit-interface-stubs");
4146 Args.MakeArgString(Twine("-interface-stub-version=") + ArgStr.str()));
4147 } else if (JA.getType() == types::TY_PP_Asm) {
4148 CmdArgs.push_back("-S");
4149 } else if (JA.getType() == types::TY_AST) {
4150 CmdArgs.push_back("-emit-pch");
4151 } else if (JA.getType() == types::TY_ModuleFile) {
4152 CmdArgs.push_back("-module-file-info");
4153 } else if (JA.getType() == types::TY_RewrittenObjC) {
4154 CmdArgs.push_back("-rewrite-objc");
4155 rewriteKind = RK_NonFragile;
4156 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
4157 CmdArgs.push_back("-rewrite-objc");
4158 rewriteKind = RK_Fragile;
4160 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
4163 // Preserve use-list order by default when emitting bitcode, so that
4164 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
4165 // same result as running passes here. For LTO, we don't need to preserve
4166 // the use-list order, since serialization to bitcode is part of the flow.
4167 if (JA.getType() == types::TY_LLVM_BC)
4168 CmdArgs.push_back("-emit-llvm-uselists");
4170 // Device-side jobs do not support LTO.
4171 bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
4172 JA.isDeviceOffloading(Action::OFK_Host));
4174 if (D.isUsingLTO() && !isDeviceOffloadAction) {
4175 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
4176 CmdArgs.push_back("-flto-unit");
4180 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
4181 if (!types::isLLVMIR(Input.getType()))
4182 D.Diag(diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);
4183 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
4186 if (Args.getLastArg(options::OPT_fthin_link_bitcode_EQ))
4187 Args.AddLastArg(CmdArgs, options::OPT_fthin_link_bitcode_EQ);
4189 if (Args.getLastArg(options::OPT_save_temps_EQ))
4190 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
4192 // Embed-bitcode option.
4193 // Only white-listed flags below are allowed to be embedded.
4194 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
4195 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
4196 // Add flags implied by -fembed-bitcode.
4197 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
4198 // Disable all llvm IR level optimizations.
4199 CmdArgs.push_back("-disable-llvm-passes");
4201 // Render target options.
4202 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
4204 // reject options that shouldn't be supported in bitcode
4205 // also reject kernel/kext
4206 static const constexpr unsigned kBitcodeOptionBlacklist[] = {
4207 options::OPT_mkernel,
4208 options::OPT_fapple_kext,
4209 options::OPT_ffunction_sections,
4210 options::OPT_fno_function_sections,
4211 options::OPT_fdata_sections,
4212 options::OPT_fno_data_sections,
4213 options::OPT_fbasic_block_sections_EQ,
4214 options::OPT_funique_internal_linkage_names,
4215 options::OPT_fno_unique_internal_linkage_names,
4216 options::OPT_funique_section_names,
4217 options::OPT_fno_unique_section_names,
4218 options::OPT_funique_basic_block_section_names,
4219 options::OPT_fno_unique_basic_block_section_names,
4220 options::OPT_mrestrict_it,
4221 options::OPT_mno_restrict_it,
4222 options::OPT_mstackrealign,
4223 options::OPT_mno_stackrealign,
4224 options::OPT_mstack_alignment,
4225 options::OPT_mcmodel_EQ,
4226 options::OPT_mlong_calls,
4227 options::OPT_mno_long_calls,
4228 options::OPT_ggnu_pubnames,
4229 options::OPT_gdwarf_aranges,
4230 options::OPT_fdebug_types_section,
4231 options::OPT_fno_debug_types_section,
4232 options::OPT_fdwarf_directory_asm,
4233 options::OPT_fno_dwarf_directory_asm,
4234 options::OPT_mrelax_all,
4235 options::OPT_mno_relax_all,
4236 options::OPT_ftrap_function_EQ,
4237 options::OPT_ffixed_r9,
4238 options::OPT_mfix_cortex_a53_835769,
4239 options::OPT_mno_fix_cortex_a53_835769,
4240 options::OPT_ffixed_x18,
4241 options::OPT_mglobal_merge,
4242 options::OPT_mno_global_merge,
4243 options::OPT_mred_zone,
4244 options::OPT_mno_red_zone,
4245 options::OPT_Wa_COMMA,
4246 options::OPT_Xassembler,
4249 for (const auto &A : Args)
4250 if (llvm::find(kBitcodeOptionBlacklist, A->getOption().getID()) !=
4251 std::end(kBitcodeOptionBlacklist))
4252 D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
4254 // Render the CodeGen options that need to be passed.
4255 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
4256 options::OPT_fno_optimize_sibling_calls))
4257 CmdArgs.push_back("-mdisable-tail-calls");
4259 RenderFloatingPointOptions(TC, D, isOptimizationLevelFast(Args), Args,
4262 // Render ABI arguments
4263 switch (TC.getArch()) {
4265 case llvm::Triple::arm:
4266 case llvm::Triple::armeb:
4267 case llvm::Triple::thumbeb:
4268 RenderARMABI(Triple, Args, CmdArgs);
4270 case llvm::Triple::aarch64:
4271 case llvm::Triple::aarch64_32:
4272 case llvm::Triple::aarch64_be:
4273 RenderAArch64ABI(Triple, Args, CmdArgs);
4277 // Optimization level for CodeGen.
4278 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4279 if (A->getOption().matches(options::OPT_O4)) {
4280 CmdArgs.push_back("-O3");
4281 D.Diag(diag::warn_O4_is_O3);
4283 A->render(Args, CmdArgs);
4287 // Input/Output file.
4288 if (Output.getType() == types::TY_Dependencies) {
4289 // Handled with other dependency code.
4290 } else if (Output.isFilename()) {
4291 CmdArgs.push_back("-o");
4292 CmdArgs.push_back(Output.getFilename());
4294 assert(Output.isNothing() && "Input output.");
4297 for (const auto &II : Inputs) {
4298 addDashXForInput(Args, II, CmdArgs);
4299 if (II.isFilename())
4300 CmdArgs.push_back(II.getFilename());
4302 II.getInputArg().renderAsInput(Args, CmdArgs);
4306 std::make_unique<Command>(JA, *this, ResponseFileSupport::AtFileUTF8(),
4307 D.getClangProgramPath(), CmdArgs, Inputs));
4311 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
4312 CmdArgs.push_back("-fembed-bitcode=marker");
4314 // We normally speed up the clang process a bit by skipping destructors at
4315 // exit, but when we're generating diagnostics we can rely on some of the
4317 if (!C.isForDiagnostics())
4318 CmdArgs.push_back("-disable-free");
4321 const bool IsAssertBuild = false;
4323 const bool IsAssertBuild = true;
4326 // Disable the verification pass in -asserts builds.
4328 CmdArgs.push_back("-disable-llvm-verifier");
4330 // Discard value names in assert builds unless otherwise specified.
4331 if (Args.hasFlag(options::OPT_fdiscard_value_names,
4332 options::OPT_fno_discard_value_names, !IsAssertBuild)) {
4333 if (Args.hasArg(options::OPT_fdiscard_value_names) &&
4334 (std::any_of(Inputs.begin(), Inputs.end(),
4335 [](const clang::driver::InputInfo &II) {
4336 return types::isLLVMIR(II.getType());
4338 D.Diag(diag::warn_ignoring_fdiscard_for_bitcode);
4340 CmdArgs.push_back("-discard-value-names");
4343 // Set the main file name, so that debug info works even with
4345 CmdArgs.push_back("-main-file-name");
4346 CmdArgs.push_back(getBaseInputName(Args, Input));
4348 // Some flags which affect the language (via preprocessor
4350 if (Args.hasArg(options::OPT_static))
4351 CmdArgs.push_back("-static-define");
4353 if (Args.hasArg(options::OPT_municode))
4354 CmdArgs.push_back("-DUNICODE");
4356 if (isa<AnalyzeJobAction>(JA))
4357 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
4359 if (isa<AnalyzeJobAction>(JA) ||
4360 (isa<PreprocessJobAction>(JA) && Args.hasArg(options::OPT__analyze)))
4361 CmdArgs.push_back("-setup-static-analyzer");
4363 // Enable compatilibily mode to avoid analyzer-config related errors.
4364 // Since we can't access frontend flags through hasArg, let's manually iterate
4366 bool FoundAnalyzerConfig = false;
4367 for (auto Arg : Args.filtered(options::OPT_Xclang))
4368 if (StringRef(Arg->getValue()) == "-analyzer-config") {
4369 FoundAnalyzerConfig = true;
4372 if (!FoundAnalyzerConfig)
4373 for (auto Arg : Args.filtered(options::OPT_Xanalyzer))
4374 if (StringRef(Arg->getValue()) == "-analyzer-config") {
4375 FoundAnalyzerConfig = true;
4378 if (FoundAnalyzerConfig)
4379 CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
4381 CheckCodeGenerationOptions(D, Args);
4383 unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
4384 assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
4385 if (FunctionAlignment) {
4386 CmdArgs.push_back("-function-alignment");
4387 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
4390 llvm::Reloc::Model RelocationModel;
4393 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
4395 bool IsROPI = RelocationModel == llvm::Reloc::ROPI ||
4396 RelocationModel == llvm::Reloc::ROPI_RWPI;
4397 bool IsRWPI = RelocationModel == llvm::Reloc::RWPI ||
4398 RelocationModel == llvm::Reloc::ROPI_RWPI;
4400 if (Args.hasArg(options::OPT_mcmse) &&
4401 !Args.hasArg(options::OPT_fallow_unsupported)) {
4403 D.Diag(diag::err_cmse_pi_are_incompatible) << IsROPI;
4405 D.Diag(diag::err_cmse_pi_are_incompatible) << !IsRWPI;
4408 if (IsROPI && types::isCXX(Input.getType()) &&
4409 !Args.hasArg(options::OPT_fallow_unsupported))
4410 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
4412 const char *RMName = RelocationModelName(RelocationModel);
4414 CmdArgs.push_back("-mrelocation-model");
4415 CmdArgs.push_back(RMName);
4418 CmdArgs.push_back("-pic-level");
4419 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
4421 CmdArgs.push_back("-pic-is-pie");
4424 if (RelocationModel == llvm::Reloc::ROPI ||
4425 RelocationModel == llvm::Reloc::ROPI_RWPI)
4426 CmdArgs.push_back("-fropi");
4427 if (RelocationModel == llvm::Reloc::RWPI ||
4428 RelocationModel == llvm::Reloc::ROPI_RWPI)
4429 CmdArgs.push_back("-frwpi");
4431 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
4432 CmdArgs.push_back("-meabi");
4433 CmdArgs.push_back(A->getValue());
4436 // The default is -fno-semantic-interposition. We render it just because we
4437 // require explicit -fno-semantic-interposition to infer dso_local.
4438 if (Arg *A = Args.getLastArg(options::OPT_fsemantic_interposition,
4439 options::OPT_fno_semantic_interposition))
4440 if (RelocationModel != llvm::Reloc::Static && !IsPIE)
4441 A->render(Args, CmdArgs);
4445 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
4446 if (!TC.isThreadModelSupported(A->getValue()))
4447 D.Diag(diag::err_drv_invalid_thread_model_for_target)
4448 << A->getValue() << A->getAsString(Args);
4449 Model = A->getValue();
4451 Model = TC.getThreadModel();
4452 if (Model != "posix") {
4453 CmdArgs.push_back("-mthread-model");
4454 CmdArgs.push_back(Args.MakeArgString(Model));
4458 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
4460 if (Args.hasFlag(options::OPT_fmerge_all_constants,
4461 options::OPT_fno_merge_all_constants, false))
4462 CmdArgs.push_back("-fmerge-all-constants");
4464 if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
4465 options::OPT_fdelete_null_pointer_checks, false))
4466 CmdArgs.push_back("-fno-delete-null-pointer-checks");
4468 // LLVM Code Generator Options.
4470 if (Args.hasArg(options::OPT_frewrite_map_file) ||
4471 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
4472 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
4473 options::OPT_frewrite_map_file_EQ)) {
4474 StringRef Map = A->getValue();
4475 if (!llvm::sys::fs::exists(Map)) {
4476 D.Diag(diag::err_drv_no_such_file) << Map;
4478 CmdArgs.push_back("-frewrite-map-file");
4479 CmdArgs.push_back(A->getValue());
4485 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
4486 StringRef v = A->getValue();
4487 CmdArgs.push_back("-mllvm");
4488 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
4492 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
4494 CmdArgs.push_back("-fno-jump-tables");
4496 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
4497 options::OPT_fno_profile_sample_accurate, false))
4498 CmdArgs.push_back("-fprofile-sample-accurate");
4500 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
4501 options::OPT_fno_preserve_as_comments, true))
4502 CmdArgs.push_back("-fno-preserve-as-comments");
4504 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
4505 CmdArgs.push_back("-mregparm");
4506 CmdArgs.push_back(A->getValue());
4509 if (Arg *A = Args.getLastArg(options::OPT_maix_struct_return,
4510 options::OPT_msvr4_struct_return)) {
4511 if (TC.getArch() != llvm::Triple::ppc) {
4512 D.Diag(diag::err_drv_unsupported_opt_for_target)
4513 << A->getSpelling() << RawTriple.str();
4514 } else if (A->getOption().matches(options::OPT_maix_struct_return)) {
4515 CmdArgs.push_back("-maix-struct-return");
4517 assert(A->getOption().matches(options::OPT_msvr4_struct_return));
4518 CmdArgs.push_back("-msvr4-struct-return");
4522 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
4523 options::OPT_freg_struct_return)) {
4524 if (TC.getArch() != llvm::Triple::x86) {
4525 D.Diag(diag::err_drv_unsupported_opt_for_target)
4526 << A->getSpelling() << RawTriple.str();
4527 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
4528 CmdArgs.push_back("-fpcc-struct-return");
4530 assert(A->getOption().matches(options::OPT_freg_struct_return));
4531 CmdArgs.push_back("-freg-struct-return");
4535 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
4536 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
4538 if (Args.hasArg(options::OPT_fenable_matrix)) {
4539 // enable-matrix is needed by both the LangOpts and by LLVM.
4540 CmdArgs.push_back("-fenable-matrix");
4541 CmdArgs.push_back("-mllvm");
4542 CmdArgs.push_back("-enable-matrix");
4545 CodeGenOptions::FramePointerKind FPKeepKind =
4546 getFramePointerKind(Args, RawTriple);
4547 const char *FPKeepKindStr = nullptr;
4548 switch (FPKeepKind) {
4549 case CodeGenOptions::FramePointerKind::None:
4550 FPKeepKindStr = "-mframe-pointer=none";
4552 case CodeGenOptions::FramePointerKind::NonLeaf:
4553 FPKeepKindStr = "-mframe-pointer=non-leaf";
4555 case CodeGenOptions::FramePointerKind::All:
4556 FPKeepKindStr = "-mframe-pointer=all";
4559 assert(FPKeepKindStr && "unknown FramePointerKind");
4560 CmdArgs.push_back(FPKeepKindStr);
4562 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
4563 options::OPT_fno_zero_initialized_in_bss, true))
4564 CmdArgs.push_back("-fno-zero-initialized-in-bss");
4566 bool OFastEnabled = isOptimizationLevelFast(Args);
4567 // If -Ofast is the optimization level, then -fstrict-aliasing should be
4568 // enabled. This alias option is being used to simplify the hasFlag logic.
4569 OptSpecifier StrictAliasingAliasOption =
4570 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
4571 // We turn strict aliasing off by default if we're in CL mode, since MSVC
4572 // doesn't do any TBAA.
4573 bool TBAAOnByDefault = !D.IsCLMode();
4574 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
4575 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
4576 CmdArgs.push_back("-relaxed-aliasing");
4577 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
4578 options::OPT_fno_struct_path_tbaa))
4579 CmdArgs.push_back("-no-struct-path-tbaa");
4580 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
4582 CmdArgs.push_back("-fstrict-enums");
4583 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
4585 CmdArgs.push_back("-fno-strict-return");
4586 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
4587 options::OPT_fno_allow_editor_placeholders, false))
4588 CmdArgs.push_back("-fallow-editor-placeholders");
4589 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
4590 options::OPT_fno_strict_vtable_pointers,
4592 CmdArgs.push_back("-fstrict-vtable-pointers");
4593 if (Args.hasFlag(options::OPT_fforce_emit_vtables,
4594 options::OPT_fno_force_emit_vtables,
4596 CmdArgs.push_back("-fforce-emit-vtables");
4597 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
4598 options::OPT_fno_optimize_sibling_calls))
4599 CmdArgs.push_back("-mdisable-tail-calls");
4600 if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
4601 options::OPT_fescaping_block_tail_calls, false))
4602 CmdArgs.push_back("-fno-escaping-block-tail-calls");
4604 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
4605 options::OPT_fno_fine_grained_bitfield_accesses);
4607 // Handle segmented stacks.
4608 if (Args.hasArg(options::OPT_fsplit_stack))
4609 CmdArgs.push_back("-split-stacks");
4611 RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs, JA);
4613 if (Arg *A = Args.getLastArg(options::OPT_mdouble_EQ)) {
4614 if (TC.getArch() == llvm::Triple::avr)
4615 A->render(Args, CmdArgs);
4617 D.Diag(diag::err_drv_unsupported_opt_for_target)
4618 << A->getAsString(Args) << TripleStr;
4621 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) {
4622 if (TC.getTriple().isX86())
4623 A->render(Args, CmdArgs);
4624 else if ((TC.getArch() == llvm::Triple::ppc || TC.getTriple().isPPC64()) &&
4625 (A->getOption().getID() != options::OPT_mlong_double_80))
4626 A->render(Args, CmdArgs);
4628 D.Diag(diag::err_drv_unsupported_opt_for_target)
4629 << A->getAsString(Args) << TripleStr;
4632 // Decide whether to use verbose asm. Verbose assembly is the default on
4633 // toolchains which have the integrated assembler on by default.
4634 bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
4635 if (!Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
4636 IsIntegratedAssemblerDefault))
4637 CmdArgs.push_back("-fno-verbose-asm");
4639 if (!TC.useIntegratedAs())
4640 CmdArgs.push_back("-no-integrated-as");
4642 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
4643 CmdArgs.push_back("-mdebug-pass");
4644 CmdArgs.push_back("Structure");
4646 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
4647 CmdArgs.push_back("-mdebug-pass");
4648 CmdArgs.push_back("Arguments");
4651 // Enable -mconstructor-aliases except on darwin, where we have to work around
4652 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
4653 // aliases aren't supported. Similarly, aliases aren't yet supported for AIX.
4654 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX() && !RawTriple.isOSAIX())
4655 CmdArgs.push_back("-mconstructor-aliases");
4657 // Darwin's kernel doesn't support guard variables; just die if we
4659 if (KernelOrKext && RawTriple.isOSDarwin())
4660 CmdArgs.push_back("-fforbid-guard-variables");
4662 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
4663 Triple.isWindowsGNUEnvironment())) {
4664 CmdArgs.push_back("-mms-bitfields");
4667 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
4668 options::OPT_mno_pie_copy_relocations,
4670 CmdArgs.push_back("-mpie-copy-relocations");
4673 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
4674 CmdArgs.push_back("-fno-plt");
4677 // -fhosted is default.
4678 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
4679 // use Freestanding.
4681 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
4684 CmdArgs.push_back("-ffreestanding");
4686 // This is a coarse approximation of what llvm-gcc actually does, both
4687 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
4688 // complicated ways.
4689 bool AsynchronousUnwindTables =
4690 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
4691 options::OPT_fno_asynchronous_unwind_tables,
4692 (TC.IsUnwindTablesDefault(Args) ||
4693 TC.getSanitizerArgs().needsUnwindTables()) &&
4695 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
4696 AsynchronousUnwindTables))
4697 CmdArgs.push_back("-munwind-tables");
4699 // Prepare `-aux-target-cpu` and `-aux-target-feature` unless
4700 // `--gpu-use-aux-triple-only` is specified.
4701 if (!Args.getLastArg(options::OPT_gpu_use_aux_triple_only) &&
4702 ((IsCuda && JA.isDeviceOffloading(Action::OFK_Cuda)) ||
4703 (IsHIP && JA.isDeviceOffloading(Action::OFK_HIP)))) {
4704 const ArgList &HostArgs =
4705 C.getArgsForToolChain(nullptr, StringRef(), Action::OFK_None);
4706 std::string HostCPU =
4707 getCPUName(HostArgs, *TC.getAuxTriple(), /*FromAs*/ false);
4708 if (!HostCPU.empty()) {
4709 CmdArgs.push_back("-aux-target-cpu");
4710 CmdArgs.push_back(Args.MakeArgString(HostCPU));
4712 getTargetFeatures(D, *TC.getAuxTriple(), HostArgs, CmdArgs,
4713 /*ForAS*/ false, /*IsAux*/ true);
4716 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
4718 // FIXME: Handle -mtune=.
4719 (void)Args.hasArg(options::OPT_mtune_EQ);
4721 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
4722 StringRef CM = A->getValue();
4723 if (CM == "small" || CM == "kernel" || CM == "medium" || CM == "large" ||
4725 A->render(Args, CmdArgs);
4727 D.Diag(diag::err_drv_invalid_argument_to_option)
4728 << CM << A->getOption().getName();
4731 if (Arg *A = Args.getLastArg(options::OPT_mtls_size_EQ)) {
4732 StringRef Value = A->getValue();
4733 unsigned TLSSize = 0;
4734 Value.getAsInteger(10, TLSSize);
4735 if (!Triple.isAArch64() || !Triple.isOSBinFormatELF())
4736 D.Diag(diag::err_drv_unsupported_opt_for_target)
4737 << A->getOption().getName() << TripleStr;
4738 if (TLSSize != 12 && TLSSize != 24 && TLSSize != 32 && TLSSize != 48)
4739 D.Diag(diag::err_drv_invalid_int_value)
4740 << A->getOption().getName() << Value;
4741 Args.AddLastArg(CmdArgs, options::OPT_mtls_size_EQ);
4744 // Add the target cpu
4745 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
4747 CmdArgs.push_back("-target-cpu");
4748 CmdArgs.push_back(Args.MakeArgString(CPU));
4751 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
4753 // These two are potentially updated by AddClangCLArgs.
4754 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
4755 bool EmitCodeView = false;
4757 // Add clang-cl arguments.
4758 types::ID InputType = Input.getType();
4760 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
4762 DwarfFissionKind DwarfFission;
4763 RenderDebugOptions(TC, D, RawTriple, Args, EmitCodeView, CmdArgs,
4764 DebugInfoKind, DwarfFission);
4766 // Add the split debug info name to the command lines here so we
4767 // can propagate it to the backend.
4768 bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
4769 TC.getTriple().isOSBinFormatELF() &&
4770 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4771 isa<BackendJobAction>(JA));
4773 const char *SplitDWARFOut = SplitDebugName(Args, Input, Output);
4774 CmdArgs.push_back("-split-dwarf-file");
4775 CmdArgs.push_back(SplitDWARFOut);
4776 if (DwarfFission == DwarfFissionKind::Split) {
4777 CmdArgs.push_back("-split-dwarf-output");
4778 CmdArgs.push_back(SplitDWARFOut);
4782 // Pass the linker version in use.
4783 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
4784 CmdArgs.push_back("-target-linker-version");
4785 CmdArgs.push_back(A->getValue());
4788 // Explicitly error on some things we know we don't support and can't just
4790 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
4792 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
4793 TC.getArch() == llvm::Triple::x86) {
4794 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
4795 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
4796 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
4797 << Unsupported->getOption().getName();
4799 // The faltivec option has been superseded by the maltivec option.
4800 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
4801 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4802 << Unsupported->getOption().getName()
4803 << "please use -maltivec and include altivec.h explicitly";
4804 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
4805 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4806 << Unsupported->getOption().getName() << "please use -mno-altivec";
4809 Args.AddAllArgs(CmdArgs, options::OPT_v);
4811 if (Args.getLastArg(options::OPT_H)) {
4812 CmdArgs.push_back("-H");
4813 CmdArgs.push_back("-sys-header-deps");
4816 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
4817 CmdArgs.push_back("-header-include-file");
4818 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
4820 CmdArgs.push_back("-sys-header-deps");
4822 Args.AddLastArg(CmdArgs, options::OPT_P);
4823 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
4825 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
4826 CmdArgs.push_back("-diagnostic-log-file");
4827 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
4831 // Give the gen diagnostics more chances to succeed, by avoiding intentional
4833 if (D.CCGenDiagnostics)
4834 CmdArgs.push_back("-disable-pragma-debug-crash");
4836 bool UseSeparateSections = isUseSeparateSections(Triple);
4838 if (Args.hasFlag(options::OPT_ffunction_sections,
4839 options::OPT_fno_function_sections, UseSeparateSections)) {
4840 CmdArgs.push_back("-ffunction-sections");
4843 if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_sections_EQ)) {
4844 StringRef Val = A->getValue();
4845 if (Val != "all" && Val != "labels" && Val != "none" &&
4846 !(Val.startswith("list=") && llvm::sys::fs::exists(Val.substr(5))))
4847 D.Diag(diag::err_drv_invalid_value)
4848 << A->getAsString(Args) << A->getValue();
4850 A->render(Args, CmdArgs);
4853 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
4854 UseSeparateSections)) {
4855 CmdArgs.push_back("-fdata-sections");
4858 if (!Args.hasFlag(options::OPT_funique_section_names,
4859 options::OPT_fno_unique_section_names, true))
4860 CmdArgs.push_back("-fno-unique-section-names");
4862 if (Args.hasFlag(options::OPT_funique_internal_linkage_names,
4863 options::OPT_fno_unique_internal_linkage_names, false))
4864 CmdArgs.push_back("-funique-internal-linkage-names");
4866 if (Args.hasFlag(options::OPT_funique_basic_block_section_names,
4867 options::OPT_fno_unique_basic_block_section_names, false))
4868 CmdArgs.push_back("-funique-basic-block-section-names");
4870 Args.AddLastArg(CmdArgs, options::OPT_finstrument_functions,
4871 options::OPT_finstrument_functions_after_inlining,
4872 options::OPT_finstrument_function_entry_bare);
4874 // NVPTX/AMDGCN doesn't support PGO or coverage. There's no runtime support
4875 // for sampling, overhead of call arc collection is way too high and there's
4876 // no way to collect the output.
4877 if (!Triple.isNVPTX() && !Triple.isAMDGCN())
4878 addPGOAndCoverageFlags(TC, C, D, Output, Args, CmdArgs);
4880 Args.AddLastArg(CmdArgs, options::OPT_fclang_abi_compat_EQ);
4882 // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
4883 if (RawTriple.isPS4CPU() &&
4884 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
4885 PS4cpu::addProfileRTArgs(TC, Args, CmdArgs);
4886 PS4cpu::addSanitizerArgs(TC, CmdArgs);
4889 // Pass options for controlling the default header search paths.
4890 if (Args.hasArg(options::OPT_nostdinc)) {
4891 CmdArgs.push_back("-nostdsysteminc");
4892 CmdArgs.push_back("-nobuiltininc");
4894 if (Args.hasArg(options::OPT_nostdlibinc))
4895 CmdArgs.push_back("-nostdsysteminc");
4896 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
4897 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
4900 // Pass the path to compiler resource files.
4901 CmdArgs.push_back("-resource-dir");
4902 CmdArgs.push_back(D.ResourceDir.c_str());
4904 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
4906 RenderARCMigrateToolOptions(D, Args, CmdArgs);
4908 // Add preprocessing options like -I, -D, etc. if we are using the
4911 // FIXME: Support -fpreprocessed
4912 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
4913 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
4915 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
4916 // that "The compiler can only warn and ignore the option if not recognized".
4917 // When building with ccache, it will pass -D options to clang even on
4918 // preprocessed inputs and configure concludes that -fPIC is not supported.
4919 Args.ClaimAllArgs(options::OPT_D);
4921 // Manually translate -O4 to -O3; let clang reject others.
4922 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4923 if (A->getOption().matches(options::OPT_O4)) {
4924 CmdArgs.push_back("-O3");
4925 D.Diag(diag::warn_O4_is_O3);
4927 A->render(Args, CmdArgs);
4931 // Warn about ignored options to clang.
4933 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
4934 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
4939 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
4940 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
4944 claimNoWarnArgs(Args);
4946 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
4948 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
4949 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
4950 CmdArgs.push_back("-pedantic");
4951 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
4952 Args.AddLastArg(CmdArgs, options::OPT_w);
4954 // Fixed point flags
4955 if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
4957 Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
4959 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
4960 // (-ansi is equivalent to -std=c89 or -std=c++98).
4962 // If a std is supplied, only add -trigraphs if it follows the
4964 bool ImplyVCPPCXXVer = false;
4965 const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
4967 if (Std->getOption().matches(options::OPT_ansi))
4968 if (types::isCXX(InputType))
4969 CmdArgs.push_back("-std=c++98");
4971 CmdArgs.push_back("-std=c89");
4973 Std->render(Args, CmdArgs);
4975 // If -f(no-)trigraphs appears after the language standard flag, honor it.
4976 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
4977 options::OPT_ftrigraphs,
4978 options::OPT_fno_trigraphs))
4980 A->render(Args, CmdArgs);
4982 // Honor -std-default.
4984 // FIXME: Clang doesn't correctly handle -std= when the input language
4985 // doesn't match. For the time being just ignore this for C++ inputs;
4986 // eventually we want to do all the standard defaulting here instead of
4987 // splitting it between the driver and clang -cc1.
4988 if (!types::isCXX(InputType))
4989 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
4991 else if (IsWindowsMSVC)
4992 ImplyVCPPCXXVer = true;
4994 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
4995 options::OPT_fno_trigraphs);
4997 // HIP headers has minimum C++ standard requirements. Therefore set the
4998 // default language standard.
5000 CmdArgs.push_back(IsWindowsMSVC ? "-std=c++14" : "-std=c++11");
5003 // GCC's behavior for -Wwrite-strings is a bit strange:
5004 // * In C, this "warning flag" changes the types of string literals from
5005 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
5006 // for the discarded qualifier.
5007 // * In C++, this is just a normal warning flag.
5009 // Implementing this warning correctly in C is hard, so we follow GCC's
5010 // behavior for now. FIXME: Directly diagnose uses of a string literal as
5011 // a non-const char* in C, rather than using this crude hack.
5012 if (!types::isCXX(InputType)) {
5013 // FIXME: This should behave just like a warning flag, and thus should also
5014 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
5016 Args.getLastArg(options::OPT_Wwrite_strings,
5017 options::OPT_Wno_write_strings, options::OPT_w);
5019 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
5020 CmdArgs.push_back("-fconst-strings");
5023 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
5024 // during C++ compilation, which it is by default. GCC keeps this define even
5025 // in the presence of '-w', match this behavior bug-for-bug.
5026 if (types::isCXX(InputType) &&
5027 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
5029 CmdArgs.push_back("-fdeprecated-macro");
5032 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
5033 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
5034 if (Asm->getOption().matches(options::OPT_fasm))
5035 CmdArgs.push_back("-fgnu-keywords");
5037 CmdArgs.push_back("-fno-gnu-keywords");
5040 if (ShouldDisableDwarfDirectory(Args, TC))
5041 CmdArgs.push_back("-fno-dwarf-directory-asm");
5043 if (!ShouldEnableAutolink(Args, TC, JA))
5044 CmdArgs.push_back("-fno-autolink");
5046 // Add in -fdebug-compilation-dir if necessary.
5047 addDebugCompDirArg(Args, CmdArgs, D.getVFS());
5049 addDebugPrefixMapArg(D, Args, CmdArgs);
5051 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
5052 options::OPT_ftemplate_depth_EQ)) {
5053 CmdArgs.push_back("-ftemplate-depth");
5054 CmdArgs.push_back(A->getValue());
5057 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
5058 CmdArgs.push_back("-foperator-arrow-depth");
5059 CmdArgs.push_back(A->getValue());
5062 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
5063 CmdArgs.push_back("-fconstexpr-depth");
5064 CmdArgs.push_back(A->getValue());
5067 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
5068 CmdArgs.push_back("-fconstexpr-steps");
5069 CmdArgs.push_back(A->getValue());
5072 if (Args.hasArg(options::OPT_fexperimental_new_constant_interpreter))
5073 CmdArgs.push_back("-fexperimental-new-constant-interpreter");
5075 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
5076 CmdArgs.push_back("-fbracket-depth");
5077 CmdArgs.push_back(A->getValue());
5080 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
5081 options::OPT_Wlarge_by_value_copy_def)) {
5082 if (A->getNumValues()) {
5083 StringRef bytes = A->getValue();
5084 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
5086 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
5089 if (Args.hasArg(options::OPT_relocatable_pch))
5090 CmdArgs.push_back("-relocatable-pch");
5092 if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
5093 static const char *kCFABIs[] = {
5094 "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
5097 if (find(kCFABIs, StringRef(A->getValue())) == std::end(kCFABIs))
5098 D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
5100 A->render(Args, CmdArgs);
5103 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
5104 CmdArgs.push_back("-fconstant-string-class");
5105 CmdArgs.push_back(A->getValue());
5108 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
5109 CmdArgs.push_back("-ftabstop");
5110 CmdArgs.push_back(A->getValue());
5113 if (Args.hasFlag(options::OPT_fstack_size_section,
5114 options::OPT_fno_stack_size_section, RawTriple.isPS4()))
5115 CmdArgs.push_back("-fstack-size-section");
5117 CmdArgs.push_back("-ferror-limit");
5118 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
5119 CmdArgs.push_back(A->getValue());
5121 CmdArgs.push_back("19");
5123 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
5124 CmdArgs.push_back("-fmacro-backtrace-limit");
5125 CmdArgs.push_back(A->getValue());
5128 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
5129 CmdArgs.push_back("-ftemplate-backtrace-limit");
5130 CmdArgs.push_back(A->getValue());
5133 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
5134 CmdArgs.push_back("-fconstexpr-backtrace-limit");
5135 CmdArgs.push_back(A->getValue());
5138 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
5139 CmdArgs.push_back("-fspell-checking-limit");
5140 CmdArgs.push_back(A->getValue());
5143 // Pass -fmessage-length=.
5144 unsigned MessageLength = 0;
5145 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
5146 StringRef V(A->getValue());
5147 if (V.getAsInteger(0, MessageLength))
5148 D.Diag(diag::err_drv_invalid_argument_to_option)
5149 << V << A->getOption().getName();
5151 // If -fmessage-length=N was not specified, determine whether this is a
5152 // terminal and, if so, implicitly define -fmessage-length appropriately.
5153 MessageLength = llvm::sys::Process::StandardErrColumns();
5155 if (MessageLength != 0)
5157 Args.MakeArgString("-fmessage-length=" + Twine(MessageLength)));
5159 // -fvisibility= and -fvisibility-ms-compat are of a piece.
5160 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
5161 options::OPT_fvisibility_ms_compat)) {
5162 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
5163 CmdArgs.push_back("-fvisibility");
5164 CmdArgs.push_back(A->getValue());
5166 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
5167 CmdArgs.push_back("-fvisibility");
5168 CmdArgs.push_back("hidden");
5169 CmdArgs.push_back("-ftype-visibility");
5170 CmdArgs.push_back("default");
5174 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
5175 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
5177 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
5179 // Forward -f (flag) options which we can pass directly.
5180 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
5181 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
5182 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
5183 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
5184 Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
5185 options::OPT_fno_emulated_tls);
5187 // AltiVec-like language extensions aren't relevant for assembling.
5188 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
5189 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
5191 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
5192 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
5194 // Forward flags for OpenMP. We don't do this if the current action is an
5195 // device offloading action other than OpenMP.
5196 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
5197 options::OPT_fno_openmp, false) &&
5198 (JA.isDeviceOffloading(Action::OFK_None) ||
5199 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
5200 switch (D.getOpenMPRuntime(Args)) {
5201 case Driver::OMPRT_OMP:
5202 case Driver::OMPRT_IOMP5:
5203 // Clang can generate useful OpenMP code for these two runtime libraries.
5204 CmdArgs.push_back("-fopenmp");
5206 // If no option regarding the use of TLS in OpenMP codegeneration is
5207 // given, decide a default based on the target. Otherwise rely on the
5208 // options and pass the right information to the frontend.
5209 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
5210 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
5211 CmdArgs.push_back("-fnoopenmp-use-tls");
5212 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
5213 options::OPT_fno_openmp_simd);
5214 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_enable_irbuilder);
5215 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
5216 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
5217 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
5218 Args.AddAllArgs(CmdArgs,
5219 options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
5220 if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
5221 options::OPT_fno_openmp_optimistic_collapse,
5223 CmdArgs.push_back("-fopenmp-optimistic-collapse");
5225 // When in OpenMP offloading mode with NVPTX target, forward
5227 if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
5228 options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
5229 CmdArgs.push_back("-fopenmp-cuda-mode");
5231 // When in OpenMP offloading mode with NVPTX target, forward
5232 // cuda-parallel-target-regions flag
5233 if (Args.hasFlag(options::OPT_fopenmp_cuda_parallel_target_regions,
5234 options::OPT_fno_openmp_cuda_parallel_target_regions,
5236 CmdArgs.push_back("-fopenmp-cuda-parallel-target-regions");
5238 // When in OpenMP offloading mode with NVPTX target, check if full runtime
5240 if (Args.hasFlag(options::OPT_fopenmp_cuda_force_full_runtime,
5241 options::OPT_fno_openmp_cuda_force_full_runtime,
5243 CmdArgs.push_back("-fopenmp-cuda-force-full-runtime");
5246 // By default, if Clang doesn't know how to generate useful OpenMP code
5247 // for a specific runtime library, we just don't pass the '-fopenmp' flag
5248 // down to the actual compilation.
5249 // FIXME: It would be better to have a mode which *only* omits IR
5250 // generation based on the OpenMP support so that we get consistent
5251 // semantic analysis, etc.
5255 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
5256 options::OPT_fno_openmp_simd);
5257 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
5260 const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
5261 Sanitize.addArgs(TC, Args, CmdArgs, InputType);
5263 const XRayArgs &XRay = TC.getXRayArgs();
5264 XRay.addArgs(TC, Args, CmdArgs, InputType);
5266 if (Arg *A = Args.getLastArg(options::OPT_fpatchable_function_entry_EQ)) {
5267 StringRef S0 = A->getValue(), S = S0;
5268 unsigned Size, Offset = 0;
5269 if (!Triple.isAArch64() && Triple.getArch() != llvm::Triple::x86 &&
5270 Triple.getArch() != llvm::Triple::x86_64)
5271 D.Diag(diag::err_drv_unsupported_opt_for_target)
5272 << A->getAsString(Args) << TripleStr;
5273 else if (S.consumeInteger(10, Size) ||
5274 (!S.empty() && (!S.consume_front(",") ||
5275 S.consumeInteger(10, Offset) || !S.empty())))
5276 D.Diag(diag::err_drv_invalid_argument_to_option)
5277 << S0 << A->getOption().getName();
5278 else if (Size < Offset)
5279 D.Diag(diag::err_drv_unsupported_fpatchable_function_entry_argument);
5281 CmdArgs.push_back(Args.MakeArgString(A->getSpelling() + Twine(Size)));
5282 CmdArgs.push_back(Args.MakeArgString(
5283 "-fpatchable-function-entry-offset=" + Twine(Offset)));
5287 if (TC.SupportsProfiling()) {
5288 Args.AddLastArg(CmdArgs, options::OPT_pg);
5290 llvm::Triple::ArchType Arch = TC.getArch();
5291 if (Arg *A = Args.getLastArg(options::OPT_mfentry)) {
5292 if (Arch == llvm::Triple::systemz || TC.getTriple().isX86())
5293 A->render(Args, CmdArgs);
5295 D.Diag(diag::err_drv_unsupported_opt_for_target)
5296 << A->getAsString(Args) << TripleStr;
5298 if (Arg *A = Args.getLastArg(options::OPT_mnop_mcount)) {
5299 if (Arch == llvm::Triple::systemz)
5300 A->render(Args, CmdArgs);
5302 D.Diag(diag::err_drv_unsupported_opt_for_target)
5303 << A->getAsString(Args) << TripleStr;
5305 if (Arg *A = Args.getLastArg(options::OPT_mrecord_mcount)) {
5306 if (Arch == llvm::Triple::systemz)
5307 A->render(Args, CmdArgs);
5309 D.Diag(diag::err_drv_unsupported_opt_for_target)
5310 << A->getAsString(Args) << TripleStr;
5314 if (Args.getLastArg(options::OPT_fapple_kext) ||
5315 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
5316 CmdArgs.push_back("-fapple-kext");
5318 Args.AddLastArg(CmdArgs, options::OPT_flax_vector_conversions_EQ);
5319 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
5320 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
5321 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
5322 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
5323 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace);
5324 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);
5325 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
5326 Args.AddLastArg(CmdArgs, options::OPT_malign_double);
5327 Args.AddLastArg(CmdArgs, options::OPT_fno_temp_file);
5329 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
5330 CmdArgs.push_back("-ftrapv-handler");
5331 CmdArgs.push_back(A->getValue());
5334 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
5336 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
5337 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
5338 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
5339 if (A->getOption().matches(options::OPT_fwrapv))
5340 CmdArgs.push_back("-fwrapv");
5341 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
5342 options::OPT_fno_strict_overflow)) {
5343 if (A->getOption().matches(options::OPT_fno_strict_overflow))
5344 CmdArgs.push_back("-fwrapv");
5347 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
5348 options::OPT_fno_reroll_loops))
5349 if (A->getOption().matches(options::OPT_freroll_loops))
5350 CmdArgs.push_back("-freroll-loops");
5352 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
5353 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
5354 options::OPT_fno_unroll_loops);
5356 Args.AddLastArg(CmdArgs, options::OPT_pthread);
5358 if (Args.hasFlag(options::OPT_mspeculative_load_hardening,
5359 options::OPT_mno_speculative_load_hardening, false))
5360 CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening"));
5362 RenderSSPOptions(TC, Args, CmdArgs, KernelOrKext);
5363 RenderSCPOptions(TC, Args, CmdArgs);
5364 RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
5366 // Translate -mstackrealign
5367 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
5369 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
5371 if (Args.hasArg(options::OPT_mstack_alignment)) {
5372 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
5373 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
5376 if (Args.hasArg(options::OPT_mstack_probe_size)) {
5377 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
5380 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
5382 CmdArgs.push_back("-mstack-probe-size=0");
5385 if (!Args.hasFlag(options::OPT_mstack_arg_probe,
5386 options::OPT_mno_stack_arg_probe, true))
5387 CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
5389 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
5390 options::OPT_mno_restrict_it)) {
5391 if (A->getOption().matches(options::OPT_mrestrict_it)) {
5392 CmdArgs.push_back("-mllvm");
5393 CmdArgs.push_back("-arm-restrict-it");
5395 CmdArgs.push_back("-mllvm");
5396 CmdArgs.push_back("-arm-no-restrict-it");
5398 } else if (Triple.isOSWindows() &&
5399 (Triple.getArch() == llvm::Triple::arm ||
5400 Triple.getArch() == llvm::Triple::thumb)) {
5401 // Windows on ARM expects restricted IT blocks
5402 CmdArgs.push_back("-mllvm");
5403 CmdArgs.push_back("-arm-restrict-it");
5406 // Forward -cl options to -cc1
5407 RenderOpenCLOptions(Args, CmdArgs);
5409 if (IsHIP && Args.hasFlag(options::OPT_fhip_new_launch_api,
5410 options::OPT_fno_hip_new_launch_api, true))
5411 CmdArgs.push_back("-fhip-new-launch-api");
5413 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
5415 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
5418 // Forward -f options with positive and negative forms; we translate
5420 if (Arg *A = getLastProfileSampleUseArg(Args)) {
5421 auto *PGOArg = Args.getLastArg(
5422 options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,
5423 options::OPT_fcs_profile_generate, options::OPT_fcs_profile_generate_EQ,
5424 options::OPT_fprofile_use, options::OPT_fprofile_use_EQ);
5426 D.Diag(diag::err_drv_argument_not_allowed_with)
5427 << "SampleUse with PGO options";
5429 StringRef fname = A->getValue();
5430 if (!llvm::sys::fs::exists(fname))
5431 D.Diag(diag::err_drv_no_such_file) << fname;
5433 A->render(Args, CmdArgs);
5435 Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
5437 RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
5439 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
5440 options::OPT_fno_assume_sane_operator_new))
5441 CmdArgs.push_back("-fno-assume-sane-operator-new");
5443 // -fblocks=0 is default.
5444 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
5445 TC.IsBlocksDefault()) ||
5446 (Args.hasArg(options::OPT_fgnu_runtime) &&
5447 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
5448 !Args.hasArg(options::OPT_fno_blocks))) {
5449 CmdArgs.push_back("-fblocks");
5451 if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
5452 CmdArgs.push_back("-fblocks-runtime-optional");
5455 // -fencode-extended-block-signature=1 is default.
5456 if (TC.IsEncodeExtendedBlockSignatureDefault())
5457 CmdArgs.push_back("-fencode-extended-block-signature");
5459 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
5461 types::isCXX(InputType)) {
5462 CmdArgs.push_back("-fcoroutines-ts");
5465 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
5466 options::OPT_fno_double_square_bracket_attributes);
5468 // -faccess-control is default.
5469 if (Args.hasFlag(options::OPT_fno_access_control,
5470 options::OPT_faccess_control, false))
5471 CmdArgs.push_back("-fno-access-control");
5473 // -felide-constructors is the default.
5474 if (Args.hasFlag(options::OPT_fno_elide_constructors,
5475 options::OPT_felide_constructors, false))
5476 CmdArgs.push_back("-fno-elide-constructors");
5478 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
5480 if (KernelOrKext || (types::isCXX(InputType) &&
5481 (RTTIMode == ToolChain::RM_Disabled)))
5482 CmdArgs.push_back("-fno-rtti");
5484 // -fshort-enums=0 is default for all architectures except Hexagon.
5485 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
5486 TC.getArch() == llvm::Triple::hexagon))
5487 CmdArgs.push_back("-fshort-enums");
5489 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
5491 // -fuse-cxa-atexit is default.
5493 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
5494 !RawTriple.isOSAIX() && !RawTriple.isOSWindows() &&
5495 TC.getArch() != llvm::Triple::xcore &&
5496 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
5497 RawTriple.hasEnvironment())) ||
5499 CmdArgs.push_back("-fno-use-cxa-atexit");
5501 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
5502 options::OPT_fno_register_global_dtors_with_atexit,
5503 RawTriple.isOSDarwin() && !KernelOrKext))
5504 CmdArgs.push_back("-fregister-global-dtors-with-atexit");
5506 // -fno-use-line-directives is default.
5507 if (Args.hasFlag(options::OPT_fuse_line_directives,
5508 options::OPT_fno_use_line_directives, false))
5509 CmdArgs.push_back("-fuse-line-directives");
5511 // -fms-extensions=0 is default.
5512 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
5514 CmdArgs.push_back("-fms-extensions");
5516 // -fms-compatibility=0 is default.
5517 bool IsMSVCCompat = Args.hasFlag(
5518 options::OPT_fms_compatibility, options::OPT_fno_ms_compatibility,
5519 (IsWindowsMSVC && Args.hasFlag(options::OPT_fms_extensions,
5520 options::OPT_fno_ms_extensions, true)));
5522 CmdArgs.push_back("-fms-compatibility");
5524 // Handle -fgcc-version, if present.
5525 VersionTuple GNUCVer;
5526 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {
5527 // Check that the version has 1 to 3 components and the minor and patch
5528 // versions fit in two decimal digits.
5529 StringRef Val = A->getValue();
5530 Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable.
5531 bool Invalid = GNUCVer.tryParse(Val);
5532 unsigned Minor = GNUCVer.getMinor().getValueOr(0);
5533 unsigned Patch = GNUCVer.getSubminor().getValueOr(0);
5534 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
5535 D.Diag(diag::err_drv_invalid_value)
5536 << A->getAsString(Args) << A->getValue();
5538 } else if (!IsMSVCCompat) {
5539 // Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect.
5540 GNUCVer = VersionTuple(4, 2, 1);
5542 if (!GNUCVer.empty()) {
5544 Args.MakeArgString("-fgnuc-version=" + GNUCVer.getAsString()));
5547 VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
5550 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
5552 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
5553 if (ImplyVCPPCXXVer) {
5554 StringRef LanguageStandard;
5555 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
5557 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
5558 .Case("c++14", "-std=c++14")
5559 .Case("c++17", "-std=c++17")
5560 .Case("c++latest", "-std=c++2a")
5562 if (LanguageStandard.empty())
5563 D.Diag(clang::diag::warn_drv_unused_argument)
5564 << StdArg->getAsString(Args);
5567 if (LanguageStandard.empty()) {
5568 if (IsMSVC2015Compatible)
5569 LanguageStandard = "-std=c++14";
5571 LanguageStandard = "-std=c++11";
5574 CmdArgs.push_back(LanguageStandard.data());
5577 // -fno-borland-extensions is default.
5578 if (Args.hasFlag(options::OPT_fborland_extensions,
5579 options::OPT_fno_borland_extensions, false))
5580 CmdArgs.push_back("-fborland-extensions");
5582 // -fno-declspec is default, except for PS4.
5583 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
5585 CmdArgs.push_back("-fdeclspec");
5586 else if (Args.hasArg(options::OPT_fno_declspec))
5587 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
5589 // -fthreadsafe-static is default, except for MSVC compatibility versions less
5591 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
5592 options::OPT_fno_threadsafe_statics,
5593 !IsWindowsMSVC || IsMSVC2015Compatible))
5594 CmdArgs.push_back("-fno-threadsafe-statics");
5596 // -fno-delayed-template-parsing is default, except when targeting MSVC.
5597 // Many old Windows SDK versions require this to parse.
5598 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
5599 // compiler. We should be able to disable this by default at some point.
5600 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
5601 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
5602 CmdArgs.push_back("-fdelayed-template-parsing");
5604 // -fgnu-keywords default varies depending on language; only pass if
5606 Args.AddLastArg(CmdArgs, options::OPT_fgnu_keywords,
5607 options::OPT_fno_gnu_keywords);
5609 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
5611 CmdArgs.push_back("-fgnu89-inline");
5613 if (Args.hasArg(options::OPT_fno_inline))
5614 CmdArgs.push_back("-fno-inline");
5616 Args.AddLastArg(CmdArgs, options::OPT_finline_functions,
5617 options::OPT_finline_hint_functions,
5618 options::OPT_fno_inline_functions);
5620 // FIXME: Find a better way to determine whether the language has modules
5621 // support by default, or just assume that all languages do.
5623 Std && (Std->containsValue("c++2a") || Std->containsValue("c++latest"));
5624 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
5626 if (Args.hasFlag(options::OPT_fpch_validate_input_files_content,
5627 options::OPT_fno_pch_validate_input_files_content, false))
5628 CmdArgs.push_back("-fvalidate-ast-input-files-content");
5629 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
5630 options::OPT_fno_pch_instantiate_templates, false))
5631 CmdArgs.push_back("-fpch-instantiate-templates");
5632 if (Args.hasFlag(options::OPT_fpch_codegen, options::OPT_fno_pch_codegen,
5634 CmdArgs.push_back("-fmodules-codegen");
5635 if (Args.hasFlag(options::OPT_fpch_debuginfo, options::OPT_fno_pch_debuginfo,
5637 CmdArgs.push_back("-fmodules-debuginfo");
5639 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
5640 options::OPT_fno_experimental_new_pass_manager);
5642 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, Inputs, CmdArgs, rewriteKind);
5643 RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
5646 if (Args.hasFlag(options::OPT_fapplication_extension,
5647 options::OPT_fno_application_extension, false))
5648 CmdArgs.push_back("-fapplication-extension");
5650 // Handle GCC-style exception args.
5651 if (!C.getDriver().IsCLMode())
5652 addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
5654 // Handle exception personalities
5655 Arg *A = Args.getLastArg(
5656 options::OPT_fsjlj_exceptions, options::OPT_fseh_exceptions,
5657 options::OPT_fdwarf_exceptions, options::OPT_fwasm_exceptions);
5659 const Option &Opt = A->getOption();
5660 if (Opt.matches(options::OPT_fsjlj_exceptions))
5661 CmdArgs.push_back("-fsjlj-exceptions");
5662 if (Opt.matches(options::OPT_fseh_exceptions))
5663 CmdArgs.push_back("-fseh-exceptions");
5664 if (Opt.matches(options::OPT_fdwarf_exceptions))
5665 CmdArgs.push_back("-fdwarf-exceptions");
5666 if (Opt.matches(options::OPT_fwasm_exceptions))
5667 CmdArgs.push_back("-fwasm-exceptions");
5669 switch (TC.GetExceptionModel(Args)) {
5672 case llvm::ExceptionHandling::DwarfCFI:
5673 CmdArgs.push_back("-fdwarf-exceptions");
5675 case llvm::ExceptionHandling::SjLj:
5676 CmdArgs.push_back("-fsjlj-exceptions");
5678 case llvm::ExceptionHandling::WinEH:
5679 CmdArgs.push_back("-fseh-exceptions");
5684 // C++ "sane" operator new.
5685 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
5686 options::OPT_fno_assume_sane_operator_new))
5687 CmdArgs.push_back("-fno-assume-sane-operator-new");
5689 // -frelaxed-template-template-args is off by default, as it is a severe
5690 // breaking change until a corresponding change to template partial ordering
5692 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
5693 options::OPT_fno_relaxed_template_template_args, false))
5694 CmdArgs.push_back("-frelaxed-template-template-args");
5696 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
5698 if (Args.hasFlag(options::OPT_fsized_deallocation,
5699 options::OPT_fno_sized_deallocation, false))
5700 CmdArgs.push_back("-fsized-deallocation");
5702 // -faligned-allocation is on by default in C++17 onwards and otherwise off
5704 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
5705 options::OPT_fno_aligned_allocation,
5706 options::OPT_faligned_new_EQ)) {
5707 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
5708 CmdArgs.push_back("-fno-aligned-allocation");
5710 CmdArgs.push_back("-faligned-allocation");
5713 // The default new alignment can be specified using a dedicated option or via
5714 // a GCC-compatible option that also turns on aligned allocation.
5715 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
5716 options::OPT_faligned_new_EQ))
5718 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
5720 // -fconstant-cfstrings is default, and may be subject to argument translation
5722 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
5723 options::OPT_fno_constant_cfstrings) ||
5724 !Args.hasFlag(options::OPT_mconstant_cfstrings,
5725 options::OPT_mno_constant_cfstrings))
5726 CmdArgs.push_back("-fno-constant-cfstrings");
5728 // -fno-pascal-strings is default, only pass non-default.
5729 if (Args.hasFlag(options::OPT_fpascal_strings,
5730 options::OPT_fno_pascal_strings, false))
5731 CmdArgs.push_back("-fpascal-strings");
5733 // Honor -fpack-struct= and -fpack-struct, if given. Note that
5734 // -fno-pack-struct doesn't apply to -fpack-struct=.
5735 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
5736 std::string PackStructStr = "-fpack-struct=";
5737 PackStructStr += A->getValue();
5738 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
5739 } else if (Args.hasFlag(options::OPT_fpack_struct,
5740 options::OPT_fno_pack_struct, false)) {
5741 CmdArgs.push_back("-fpack-struct=1");
5744 // Handle -fmax-type-align=N and -fno-type-align
5745 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
5746 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
5747 if (!SkipMaxTypeAlign) {
5748 std::string MaxTypeAlignStr = "-fmax-type-align=";
5749 MaxTypeAlignStr += A->getValue();
5750 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
5752 } else if (RawTriple.isOSDarwin()) {
5753 if (!SkipMaxTypeAlign) {
5754 std::string MaxTypeAlignStr = "-fmax-type-align=16";
5755 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
5759 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
5760 CmdArgs.push_back("-Qn");
5762 // -fno-common is the default, set -fcommon only when that flag is set.
5763 if (Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common, false))
5764 CmdArgs.push_back("-fcommon");
5766 // -fsigned-bitfields is default, and clang doesn't yet support
5767 // -funsigned-bitfields.
5768 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
5769 options::OPT_funsigned_bitfields))
5770 D.Diag(diag::warn_drv_clang_unsupported)
5771 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
5773 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
5774 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
5775 D.Diag(diag::err_drv_clang_unsupported)
5776 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
5778 // -finput_charset=UTF-8 is default. Reject others
5779 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
5780 StringRef value = inputCharset->getValue();
5781 if (!value.equals_lower("utf-8"))
5782 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
5786 // -fexec_charset=UTF-8 is default. Reject others
5787 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
5788 StringRef value = execCharset->getValue();
5789 if (!value.equals_lower("utf-8"))
5790 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
5794 RenderDiagnosticsOptions(D, Args, CmdArgs);
5796 // -fno-asm-blocks is default.
5797 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
5799 CmdArgs.push_back("-fasm-blocks");
5801 // -fgnu-inline-asm is default.
5802 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
5803 options::OPT_fno_gnu_inline_asm, true))
5804 CmdArgs.push_back("-fno-gnu-inline-asm");
5806 // Enable vectorization per default according to the optimization level
5807 // selected. For optimization levels that want vectorization we use the alias
5808 // option to simplify the hasFlag logic.
5809 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
5810 OptSpecifier VectorizeAliasOption =
5811 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
5812 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
5813 options::OPT_fno_vectorize, EnableVec))
5814 CmdArgs.push_back("-vectorize-loops");
5816 // -fslp-vectorize is enabled based on the optimization level selected.
5817 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
5818 OptSpecifier SLPVectAliasOption =
5819 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
5820 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
5821 options::OPT_fno_slp_vectorize, EnableSLPVec))
5822 CmdArgs.push_back("-vectorize-slp");
5824 ParseMPreferVectorWidth(D, Args, CmdArgs);
5826 Args.AddLastArg(CmdArgs, options::OPT_fshow_overloads_EQ);
5827 Args.AddLastArg(CmdArgs,
5828 options::OPT_fsanitize_undefined_strip_path_components_EQ);
5830 // -fdollars-in-identifiers default varies depending on platform and
5831 // language; only pass if specified.
5832 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
5833 options::OPT_fno_dollars_in_identifiers)) {
5834 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
5835 CmdArgs.push_back("-fdollars-in-identifiers");
5837 CmdArgs.push_back("-fno-dollars-in-identifiers");
5840 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
5841 // practical purposes.
5842 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
5843 options::OPT_fno_unit_at_a_time)) {
5844 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
5845 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
5848 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
5849 options::OPT_fno_apple_pragma_pack, false))
5850 CmdArgs.push_back("-fapple-pragma-pack");
5852 // Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
5853 if (willEmitRemarks(Args) && checkRemarksOptions(D, Args, Triple))
5854 renderRemarksOptions(Args, CmdArgs, Triple, Input, Output, JA);
5856 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
5857 options::OPT_fno_rewrite_imports, false);
5859 CmdArgs.push_back("-frewrite-imports");
5861 // Enable rewrite includes if the user's asked for it or if we're generating
5863 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
5864 // nice to enable this when doing a crashdump for modules as well.
5865 if (Args.hasFlag(options::OPT_frewrite_includes,
5866 options::OPT_fno_rewrite_includes, false) ||
5867 (C.isForDiagnostics() && !HaveModules))
5868 CmdArgs.push_back("-frewrite-includes");
5870 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
5871 if (Arg *A = Args.getLastArg(options::OPT_traditional,
5872 options::OPT_traditional_cpp)) {
5873 if (isa<PreprocessJobAction>(JA))
5874 CmdArgs.push_back("-traditional-cpp");
5876 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
5879 Args.AddLastArg(CmdArgs, options::OPT_dM);
5880 Args.AddLastArg(CmdArgs, options::OPT_dD);
5882 Args.AddLastArg(CmdArgs, options::OPT_fmax_tokens_EQ);
5884 // Handle serialized diagnostics.
5885 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
5886 CmdArgs.push_back("-serialize-diagnostic-file");
5887 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
5890 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
5891 CmdArgs.push_back("-fretain-comments-from-system-headers");
5893 // Forward -fcomment-block-commands to -cc1.
5894 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
5895 // Forward -fparse-all-comments to -cc1.
5896 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
5898 // Turn -fplugin=name.so into -load name.so
5899 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
5900 CmdArgs.push_back("-load");
5901 CmdArgs.push_back(A->getValue());
5905 // Forward -fpass-plugin=name.so to -cc1.
5906 for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {
5908 Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));
5912 // Setup statistics file output.
5913 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
5914 if (!StatsFile.empty())
5915 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
5917 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
5919 // -finclude-default-header flag is for preprocessor,
5920 // do not pass it to other cc1 commands when save-temps is enabled
5921 if (C.getDriver().isSaveTempsEnabled() &&
5922 !isa<PreprocessJobAction>(JA)) {
5923 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
5925 if (StringRef(Arg->getValue()) != "-finclude-default-header")
5926 CmdArgs.push_back(Arg->getValue());
5930 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
5932 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
5935 // We translate this by hand to the -cc1 argument, since nightly test uses
5936 // it and developers have been trained to spell it with -mllvm. Both
5937 // spellings are now deprecated and should be removed.
5938 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
5939 CmdArgs.push_back("-disable-llvm-optzns");
5941 A->render(Args, CmdArgs);
5945 // With -save-temps, we want to save the unoptimized bitcode output from the
5946 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
5948 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
5949 // has slightly different breakdown between stages.
5950 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
5951 // pristine IR generated by the frontend. Ideally, a new compile action should
5952 // be added so both IR can be captured.
5953 if ((C.getDriver().isSaveTempsEnabled() ||
5954 JA.isHostOffloading(Action::OFK_OpenMP)) &&
5955 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
5956 isa<CompileJobAction>(JA))
5957 CmdArgs.push_back("-disable-llvm-passes");
5959 Args.AddAllArgs(CmdArgs, options::OPT_undef);
5961 const char *Exec = D.getClangProgramPath();
5963 // Optionally embed the -cc1 level arguments into the debug info or a
5964 // section, for build analysis.
5965 // Also record command line arguments into the debug info if
5966 // -grecord-gcc-switches options is set on.
5967 // By default, -gno-record-gcc-switches is set on and no recording.
5968 auto GRecordSwitches =
5969 Args.hasFlag(options::OPT_grecord_command_line,
5970 options::OPT_gno_record_command_line, false);
5971 auto FRecordSwitches =
5972 Args.hasFlag(options::OPT_frecord_command_line,
5973 options::OPT_fno_record_command_line, false);
5974 if (FRecordSwitches && !Triple.isOSBinFormatELF())
5975 D.Diag(diag::err_drv_unsupported_opt_for_target)
5976 << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
5978 if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
5979 ArgStringList OriginalArgs;
5980 for (const auto &Arg : Args)
5981 Arg->render(Args, OriginalArgs);
5983 SmallString<256> Flags;
5984 EscapeSpacesAndBackslashes(Exec, Flags);
5985 for (const char *OriginalArg : OriginalArgs) {
5986 SmallString<128> EscapedArg;
5987 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5989 Flags += EscapedArg;
5991 auto FlagsArgString = Args.MakeArgString(Flags);
5992 if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
5993 CmdArgs.push_back("-dwarf-debug-flags");
5994 CmdArgs.push_back(FlagsArgString);
5996 if (FRecordSwitches) {
5997 CmdArgs.push_back("-record-command-line");
5998 CmdArgs.push_back(FlagsArgString);
6002 // Host-side cuda compilation receives all device-side outputs in a single
6003 // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
6004 if ((IsCuda || IsHIP) && CudaDeviceInput) {
6005 CmdArgs.push_back("-fcuda-include-gpubinary");
6006 CmdArgs.push_back(CudaDeviceInput->getFilename());
6007 if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
6008 CmdArgs.push_back("-fgpu-rdc");
6012 if (Args.hasFlag(options::OPT_fcuda_short_ptr,
6013 options::OPT_fno_cuda_short_ptr, false))
6014 CmdArgs.push_back("-fcuda-short-ptr");
6018 CmdArgs.push_back("-fcuda-allow-variadic-functions");
6020 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
6021 // to specify the result of the compile phase on the host, so the meaningful
6022 // device declarations can be identified. Also, -fopenmp-is-device is passed
6023 // along to tell the frontend that it is generating code for a device, so that
6024 // only the relevant declarations are emitted.
6025 if (IsOpenMPDevice) {
6026 CmdArgs.push_back("-fopenmp-is-device");
6027 if (OpenMPDeviceInput) {
6028 CmdArgs.push_back("-fopenmp-host-ir-file-path");
6029 CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
6033 // For all the host OpenMP offloading compile jobs we need to pass the targets
6034 // information using -fopenmp-targets= option.
6035 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
6036 SmallString<128> TargetInfo("-fopenmp-targets=");
6038 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
6039 assert(Tgts && Tgts->getNumValues() &&
6040 "OpenMP offloading has to have targets specified.");
6041 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
6044 // We need to get the string from the triple because it may be not exactly
6045 // the same as the one we get directly from the arguments.
6046 llvm::Triple T(Tgts->getValue(i));
6047 TargetInfo += T.getTriple();
6049 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
6052 bool VirtualFunctionElimination =
6053 Args.hasFlag(options::OPT_fvirtual_function_elimination,
6054 options::OPT_fno_virtual_function_elimination, false);
6055 if (VirtualFunctionElimination) {
6056 // VFE requires full LTO (currently, this might be relaxed to allow ThinLTO
6058 if (D.getLTOMode() != LTOK_Full)
6059 D.Diag(diag::err_drv_argument_only_allowed_with)
6060 << "-fvirtual-function-elimination"
6063 CmdArgs.push_back("-fvirtual-function-elimination");
6066 // VFE requires whole-program-vtables, and enables it by default.
6067 bool WholeProgramVTables = Args.hasFlag(
6068 options::OPT_fwhole_program_vtables,
6069 options::OPT_fno_whole_program_vtables, VirtualFunctionElimination);
6070 if (VirtualFunctionElimination && !WholeProgramVTables) {
6071 D.Diag(diag::err_drv_argument_not_allowed_with)
6072 << "-fno-whole-program-vtables"
6073 << "-fvirtual-function-elimination";
6076 if (WholeProgramVTables) {
6077 if (!D.isUsingLTO())
6078 D.Diag(diag::err_drv_argument_only_allowed_with)
6079 << "-fwhole-program-vtables"
6081 CmdArgs.push_back("-fwhole-program-vtables");
6084 bool DefaultsSplitLTOUnit =
6085 (WholeProgramVTables || Sanitize.needsLTO()) &&
6086 (D.getLTOMode() == LTOK_Full || TC.canSplitThinLTOUnit());
6088 Args.hasFlag(options::OPT_fsplit_lto_unit,
6089 options::OPT_fno_split_lto_unit, DefaultsSplitLTOUnit);
6090 if (Sanitize.needsLTO() && !SplitLTOUnit)
6091 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fno-split-lto-unit"
6092 << "-fsanitize=cfi";
6094 CmdArgs.push_back("-fsplit-lto-unit");
6096 if (Arg *A = Args.getLastArg(options::OPT_fglobal_isel,
6097 options::OPT_fno_global_isel)) {
6098 CmdArgs.push_back("-mllvm");
6099 if (A->getOption().matches(options::OPT_fglobal_isel)) {
6100 CmdArgs.push_back("-global-isel=1");
6102 // GISel is on by default on AArch64 -O0, so don't bother adding
6103 // the fallback remarks for it. Other combinations will add a warning of
6105 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
6106 bool IsOptLevelSupported = false;
6108 Arg *A = Args.getLastArg(options::OPT_O_Group);
6109 if (Triple.getArch() == llvm::Triple::aarch64) {
6110 if (!A || A->getOption().matches(options::OPT_O0))
6111 IsOptLevelSupported = true;
6113 if (!IsArchSupported || !IsOptLevelSupported) {
6114 CmdArgs.push_back("-mllvm");
6115 CmdArgs.push_back("-global-isel-abort=2");
6117 if (!IsArchSupported)
6118 D.Diag(diag::warn_drv_global_isel_incomplete) << Triple.getArchName();
6120 D.Diag(diag::warn_drv_global_isel_incomplete_opt);
6123 CmdArgs.push_back("-global-isel=0");
6127 if (Args.hasArg(options::OPT_forder_file_instrumentation)) {
6128 CmdArgs.push_back("-forder-file-instrumentation");
6129 // Enable order file instrumentation when ThinLTO is not on. When ThinLTO is
6130 // on, we need to pass these flags as linker flags and that will be handled
6131 // outside of the compiler.
6132 if (!D.isUsingLTO()) {
6133 CmdArgs.push_back("-mllvm");
6134 CmdArgs.push_back("-enable-order-file-instrumentation");
6138 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
6139 options::OPT_fno_force_enable_int128)) {
6140 if (A->getOption().matches(options::OPT_fforce_enable_int128))
6141 CmdArgs.push_back("-fforce-enable-int128");
6144 if (Args.hasFlag(options::OPT_fkeep_static_consts,
6145 options::OPT_fno_keep_static_consts, false))
6146 CmdArgs.push_back("-fkeep-static-consts");
6148 if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
6149 options::OPT_fno_complete_member_pointers, false))
6150 CmdArgs.push_back("-fcomplete-member-pointers");
6152 if (!Args.hasFlag(options::OPT_fcxx_static_destructors,
6153 options::OPT_fno_cxx_static_destructors, true))
6154 CmdArgs.push_back("-fno-c++-static-destructors");
6156 if (Arg *A = Args.getLastArg(options::OPT_moutline,
6157 options::OPT_mno_outline)) {
6158 if (A->getOption().matches(options::OPT_moutline)) {
6159 // We only support -moutline in AArch64 and ARM targets right now. If
6160 // we're not compiling for these, emit a warning and ignore the flag.
6161 // Otherwise, add the proper mllvm flags.
6162 if (!(Triple.isARM() || Triple.isThumb() ||
6163 Triple.getArch() == llvm::Triple::aarch64 ||
6164 Triple.getArch() == llvm::Triple::aarch64_32)) {
6165 D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
6167 CmdArgs.push_back("-mllvm");
6168 CmdArgs.push_back("-enable-machine-outliner");
6171 // Disable all outlining behaviour.
6172 CmdArgs.push_back("-mllvm");
6173 CmdArgs.push_back("-enable-machine-outliner=never");
6177 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
6178 (TC.getTriple().isOSBinFormatELF() ||
6179 TC.getTriple().isOSBinFormatCOFF()) &&
6180 !TC.getTriple().isPS4() &&
6181 !TC.getTriple().isOSNetBSD() &&
6182 !Distro(D.getVFS(), TC.getTriple()).IsGentoo() &&
6183 !TC.getTriple().isAndroid() &&
6184 TC.useIntegratedAs()))
6185 CmdArgs.push_back("-faddrsig");
6187 if (Arg *A = Args.getLastArg(options::OPT_fsymbol_partition_EQ)) {
6188 std::string Str = A->getAsString(Args);
6189 if (!TC.getTriple().isOSBinFormatELF())
6190 D.Diag(diag::err_drv_unsupported_opt_for_target)
6191 << Str << TC.getTripleString();
6192 CmdArgs.push_back(Args.MakeArgString(Str));
6195 // Add the "-o out -x type src.c" flags last. This is done primarily to make
6196 // the -cc1 command easier to edit when reproducing compiler crashes.
6197 if (Output.getType() == types::TY_Dependencies) {
6198 // Handled with other dependency code.
6199 } else if (Output.isFilename()) {
6200 if (Output.getType() == clang::driver::types::TY_IFS_CPP ||
6201 Output.getType() == clang::driver::types::TY_IFS) {
6202 SmallString<128> OutputFilename(Output.getFilename());
6203 llvm::sys::path::replace_extension(OutputFilename, "ifs");
6204 CmdArgs.push_back("-o");
6205 CmdArgs.push_back(Args.MakeArgString(OutputFilename));
6207 CmdArgs.push_back("-o");
6208 CmdArgs.push_back(Output.getFilename());
6211 assert(Output.isNothing() && "Invalid output.");
6214 addDashXForInput(Args, Input, CmdArgs);
6216 ArrayRef<InputInfo> FrontendInputs = Input;
6217 if (IsHeaderModulePrecompile)
6218 FrontendInputs = ModuleHeaderInputs;
6219 else if (Input.isNothing())
6220 FrontendInputs = {};
6222 for (const InputInfo &Input : FrontendInputs) {
6223 if (Input.isFilename())
6224 CmdArgs.push_back(Input.getFilename());
6226 Input.getInputArg().renderAsInput(Args, CmdArgs);
6229 // Finally add the compile command to the compilation.
6230 if (Args.hasArg(options::OPT__SLASH_fallback) &&
6231 Output.getType() == types::TY_Object &&
6232 (InputType == types::TY_C || InputType == types::TY_CXX)) {
6234 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
6235 C.addCommand(std::make_unique<FallbackCommand>(
6236 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,
6237 std::move(CLCommand)));
6238 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
6239 isa<PrecompileJobAction>(JA)) {
6240 // In /fallback builds, run the main compilation even if the pch generation
6241 // fails, so that the main compilation's fallback to cl.exe runs.
6242 C.addCommand(std::make_unique<ForceSuccessCommand>(
6243 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
6244 } else if (D.CC1Main && !D.CCGenDiagnostics) {
6245 // Invoke the CC1 directly in this process
6246 C.addCommand(std::make_unique<CC1Command>(
6247 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
6249 C.addCommand(std::make_unique<Command>(
6250 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
6253 // Make the compile command echo its inputs for /showFilenames.
6254 if (Output.getType() == types::TY_Object &&
6255 Args.hasFlag(options::OPT__SLASH_showFilenames,
6256 options::OPT__SLASH_showFilenames_, false)) {
6257 C.getJobs().getJobs().back()->PrintInputFilenames = true;
6260 if (Arg *A = Args.getLastArg(options::OPT_pg))
6261 if (FPKeepKind == CodeGenOptions::FramePointerKind::None &&
6262 !Args.hasArg(options::OPT_mfentry))
6263 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
6264 << A->getAsString(Args);
6266 // Claim some arguments which clang supports automatically.
6268 // -fpch-preprocess is used with gcc to add a special marker in the output to
6269 // include the PCH file.
6270 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
6272 // Claim some arguments which clang doesn't support, but we don't
6273 // care to warn the user about.
6274 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
6275 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
6277 // Disable warnings for clang -E -emit-llvm foo.c
6278 Args.ClaimAllArgs(options::OPT_emit_llvm);
6281 Clang::Clang(const ToolChain &TC)
6282 // CAUTION! The first constructor argument ("clang") is not arbitrary,
6283 // as it is for other tools. Some operations on a Tool actually test
6284 // whether that tool is Clang based on the Tool's Name as a string.
6285 : Tool("clang", "clang frontend", TC) {}
6289 /// Add options related to the Objective-C runtime/ABI.
6291 /// Returns true if the runtime is non-fragile.
6292 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
6293 const InputInfoList &inputs,
6294 ArgStringList &cmdArgs,
6295 RewriteKind rewriteKind) const {
6296 // Look for the controlling runtime option.
6298 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
6299 options::OPT_fobjc_runtime_EQ);
6301 // Just forward -fobjc-runtime= to the frontend. This supercedes
6302 // options about fragility.
6304 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
6305 ObjCRuntime runtime;
6306 StringRef value = runtimeArg->getValue();
6307 if (runtime.tryParse(value)) {
6308 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
6311 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
6312 (runtime.getVersion() >= VersionTuple(2, 0)))
6313 if (!getToolChain().getTriple().isOSBinFormatELF() &&
6314 !getToolChain().getTriple().isOSBinFormatCOFF()) {
6315 getToolChain().getDriver().Diag(
6316 diag::err_drv_gnustep_objc_runtime_incompatible_binary)
6317 << runtime.getVersion().getMajor();
6320 runtimeArg->render(args, cmdArgs);
6324 // Otherwise, we'll need the ABI "version". Version numbers are
6325 // slightly confusing for historical reasons:
6326 // 1 - Traditional "fragile" ABI
6327 // 2 - Non-fragile ABI, version 1
6328 // 3 - Non-fragile ABI, version 2
6329 unsigned objcABIVersion = 1;
6330 // If -fobjc-abi-version= is present, use that to set the version.
6331 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
6332 StringRef value = abiArg->getValue();
6335 else if (value == "2")
6337 else if (value == "3")
6340 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
6342 // Otherwise, determine if we are using the non-fragile ABI.
6343 bool nonFragileABIIsDefault =
6344 (rewriteKind == RK_NonFragile ||
6345 (rewriteKind == RK_None &&
6346 getToolChain().IsObjCNonFragileABIDefault()));
6347 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
6348 options::OPT_fno_objc_nonfragile_abi,
6349 nonFragileABIIsDefault)) {
6350 // Determine the non-fragile ABI version to use.
6351 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
6352 unsigned nonFragileABIVersion = 1;
6354 unsigned nonFragileABIVersion = 2;
6358 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
6359 StringRef value = abiArg->getValue();
6361 nonFragileABIVersion = 1;
6362 else if (value == "2")
6363 nonFragileABIVersion = 2;
6365 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
6369 objcABIVersion = 1 + nonFragileABIVersion;
6375 // We don't actually care about the ABI version other than whether
6376 // it's non-fragile.
6377 bool isNonFragile = objcABIVersion != 1;
6379 // If we have no runtime argument, ask the toolchain for its default runtime.
6380 // However, the rewriter only really supports the Mac runtime, so assume that.
6381 ObjCRuntime runtime;
6383 switch (rewriteKind) {
6385 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
6388 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
6391 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
6396 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
6397 // On Darwin, make this use the default behavior for the toolchain.
6398 if (getToolChain().getTriple().isOSDarwin()) {
6399 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
6401 // Otherwise, build for a generic macosx port.
6403 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
6408 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
6409 // Legacy behaviour is to target the gnustep runtime if we are in
6410 // non-fragile mode or the GCC runtime in fragile mode.
6412 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
6414 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
6417 if (llvm::any_of(inputs, [](const InputInfo &input) {
6418 return types::isObjC(input.getType());
6421 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
6425 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
6426 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
6434 bool Asynch = false;
6435 bool NoUnwindC = false;
6437 } // end anonymous namespace
6439 /// /EH controls whether to run destructor cleanups when exceptions are
6440 /// thrown. There are three modifiers:
6441 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
6442 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
6443 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
6444 /// - c: Assume that extern "C" functions are implicitly nounwind.
6445 /// The default is /EHs-c-, meaning cleanups are disabled.
6446 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
6449 std::vector<std::string> EHArgs =
6450 Args.getAllArgValues(options::OPT__SLASH_EH);
6451 for (auto EHVal : EHArgs) {
6452 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
6455 EH.Asynch = maybeConsumeDash(EHVal, I);
6460 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
6463 EH.Synch = maybeConsumeDash(EHVal, I);
6470 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
6474 // The /GX, /GX- flags are only processed if there are not /EH flags.
6475 // The default is that /GX is not specified.
6476 if (EHArgs.empty() &&
6477 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
6478 /*Default=*/false)) {
6480 EH.NoUnwindC = true;
6486 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
6487 ArgStringList &CmdArgs,
6488 codegenoptions::DebugInfoKind *DebugInfoKind,
6489 bool *EmitCodeView) const {
6490 unsigned RTOptionID = options::OPT__SLASH_MT;
6491 bool isNVPTX = getToolChain().getTriple().isNVPTX();
6493 if (Args.hasArg(options::OPT__SLASH_LDd))
6494 // The /LDd option implies /MTd. The dependent lib part can be overridden,
6495 // but defining _DEBUG is sticky.
6496 RTOptionID = options::OPT__SLASH_MTd;
6498 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
6499 RTOptionID = A->getOption().getID();
6501 StringRef FlagForCRT;
6502 switch (RTOptionID) {
6503 case options::OPT__SLASH_MD:
6504 if (Args.hasArg(options::OPT__SLASH_LDd))
6505 CmdArgs.push_back("-D_DEBUG");
6506 CmdArgs.push_back("-D_MT");
6507 CmdArgs.push_back("-D_DLL");
6508 FlagForCRT = "--dependent-lib=msvcrt";
6510 case options::OPT__SLASH_MDd:
6511 CmdArgs.push_back("-D_DEBUG");
6512 CmdArgs.push_back("-D_MT");
6513 CmdArgs.push_back("-D_DLL");
6514 FlagForCRT = "--dependent-lib=msvcrtd";
6516 case options::OPT__SLASH_MT:
6517 if (Args.hasArg(options::OPT__SLASH_LDd))
6518 CmdArgs.push_back("-D_DEBUG");
6519 CmdArgs.push_back("-D_MT");
6520 CmdArgs.push_back("-flto-visibility-public-std");
6521 FlagForCRT = "--dependent-lib=libcmt";
6523 case options::OPT__SLASH_MTd:
6524 CmdArgs.push_back("-D_DEBUG");
6525 CmdArgs.push_back("-D_MT");
6526 CmdArgs.push_back("-flto-visibility-public-std");
6527 FlagForCRT = "--dependent-lib=libcmtd";
6530 llvm_unreachable("Unexpected option ID.");
6533 if (Args.hasArg(options::OPT__SLASH_Zl)) {
6534 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
6536 CmdArgs.push_back(FlagForCRT.data());
6538 // This provides POSIX compatibility (maps 'open' to '_open'), which most
6539 // users want. The /Za flag to cl.exe turns this off, but it's not
6540 // implemented in clang.
6541 CmdArgs.push_back("--dependent-lib=oldnames");
6544 if (Arg *ShowIncludes =
6545 Args.getLastArg(options::OPT__SLASH_showIncludes,
6546 options::OPT__SLASH_showIncludes_user)) {
6547 CmdArgs.push_back("--show-includes");
6548 if (ShowIncludes->getOption().matches(options::OPT__SLASH_showIncludes))
6549 CmdArgs.push_back("-sys-header-deps");
6552 // This controls whether or not we emit RTTI data for polymorphic types.
6553 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
6555 CmdArgs.push_back("-fno-rtti-data");
6557 // This controls whether or not we emit stack-protector instrumentation.
6558 // In MSVC, Buffer Security Check (/GS) is on by default.
6559 if (!isNVPTX && Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
6560 /*Default=*/true)) {
6561 CmdArgs.push_back("-stack-protector");
6562 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
6565 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
6566 if (Arg *DebugInfoArg =
6567 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
6568 options::OPT_gline_tables_only)) {
6569 *EmitCodeView = true;
6570 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
6571 *DebugInfoKind = codegenoptions::LimitedDebugInfo;
6573 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
6575 *EmitCodeView = false;
6578 const Driver &D = getToolChain().getDriver();
6579 EHFlags EH = parseClangCLEHFlags(D, Args);
6580 if (!isNVPTX && (EH.Synch || EH.Asynch)) {
6581 if (types::isCXX(InputType))
6582 CmdArgs.push_back("-fcxx-exceptions");
6583 CmdArgs.push_back("-fexceptions");
6585 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
6586 CmdArgs.push_back("-fexternc-nounwind");
6588 // /EP should expand to -E -P.
6589 if (Args.hasArg(options::OPT__SLASH_EP)) {
6590 CmdArgs.push_back("-E");
6591 CmdArgs.push_back("-P");
6594 unsigned VolatileOptionID;
6595 if (getToolChain().getTriple().isX86())
6596 VolatileOptionID = options::OPT__SLASH_volatile_ms;
6598 VolatileOptionID = options::OPT__SLASH_volatile_iso;
6600 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
6601 VolatileOptionID = A->getOption().getID();
6603 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
6604 CmdArgs.push_back("-fms-volatile");
6606 if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
6607 options::OPT__SLASH_Zc_dllexportInlines,
6609 if (Args.hasArg(options::OPT__SLASH_fallback)) {
6610 D.Diag(clang::diag::err_drv_dllexport_inlines_and_fallback);
6612 CmdArgs.push_back("-fno-dllexport-inlines");
6616 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
6617 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
6618 if (MostGeneralArg && BestCaseArg)
6619 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
6620 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
6622 if (MostGeneralArg) {
6623 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
6624 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
6625 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
6627 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
6628 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
6629 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
6630 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
6631 << FirstConflict->getAsString(Args)
6632 << SecondConflict->getAsString(Args);
6635 CmdArgs.push_back("-fms-memptr-rep=single");
6636 else if (MultipleArg)
6637 CmdArgs.push_back("-fms-memptr-rep=multiple");
6639 CmdArgs.push_back("-fms-memptr-rep=virtual");
6642 // Parse the default calling convention options.
6644 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
6645 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
6646 options::OPT__SLASH_Gregcall)) {
6647 unsigned DCCOptId = CCArg->getOption().getID();
6648 const char *DCCFlag = nullptr;
6649 bool ArchSupported = !isNVPTX;
6650 llvm::Triple::ArchType Arch = getToolChain().getArch();
6652 case options::OPT__SLASH_Gd:
6653 DCCFlag = "-fdefault-calling-conv=cdecl";
6655 case options::OPT__SLASH_Gr:
6656 ArchSupported = Arch == llvm::Triple::x86;
6657 DCCFlag = "-fdefault-calling-conv=fastcall";
6659 case options::OPT__SLASH_Gz:
6660 ArchSupported = Arch == llvm::Triple::x86;
6661 DCCFlag = "-fdefault-calling-conv=stdcall";
6663 case options::OPT__SLASH_Gv:
6664 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
6665 DCCFlag = "-fdefault-calling-conv=vectorcall";
6667 case options::OPT__SLASH_Gregcall:
6668 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
6669 DCCFlag = "-fdefault-calling-conv=regcall";
6673 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
6674 if (ArchSupported && DCCFlag)
6675 CmdArgs.push_back(DCCFlag);
6678 Args.AddLastArg(CmdArgs, options::OPT_vtordisp_mode_EQ);
6680 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
6681 CmdArgs.push_back("-fdiagnostics-format");
6682 if (Args.hasArg(options::OPT__SLASH_fallback))
6683 CmdArgs.push_back("msvc-fallback");
6685 CmdArgs.push_back("msvc");
6688 if (Arg *A = Args.getLastArg(options::OPT__SLASH_guard)) {
6689 StringRef GuardArgs = A->getValue();
6690 // The only valid options are "cf", "cf,nochecks", and "cf-".
6691 if (GuardArgs.equals_lower("cf")) {
6692 // Emit CFG instrumentation and the table of address-taken functions.
6693 CmdArgs.push_back("-cfguard");
6694 } else if (GuardArgs.equals_lower("cf,nochecks")) {
6695 // Emit only the table of address-taken functions.
6696 CmdArgs.push_back("-cfguard-no-checks");
6697 } else if (GuardArgs.equals_lower("cf-")) {
6698 // Do nothing, but we might want to emit a security warning in future.
6700 D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << GuardArgs;
6705 visualstudio::Compiler *Clang::getCLFallback() const {
6707 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
6708 return CLFallback.get();
6712 const char *Clang::getBaseInputName(const ArgList &Args,
6713 const InputInfo &Input) {
6714 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
6717 const char *Clang::getBaseInputStem(const ArgList &Args,
6718 const InputInfoList &Inputs) {
6719 const char *Str = getBaseInputName(Args, Inputs[0]);
6721 if (const char *End = strrchr(Str, '.'))
6722 return Args.MakeArgString(std::string(Str, End));
6727 const char *Clang::getDependencyFileName(const ArgList &Args,
6728 const InputInfoList &Inputs) {
6729 // FIXME: Think about this more.
6731 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
6732 SmallString<128> OutputFilename(OutputOpt->getValue());
6733 llvm::sys::path::replace_extension(OutputFilename, llvm::Twine('d'));
6734 return Args.MakeArgString(OutputFilename);
6737 return Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".d");
6742 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
6743 ArgStringList &CmdArgs) const {
6746 const llvm::Triple &Triple = getToolChain().getTriple();
6747 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
6749 CmdArgs.push_back("-target-abi");
6750 CmdArgs.push_back(ABIName.data());
6753 void ClangAs::AddX86TargetArgs(const ArgList &Args,
6754 ArgStringList &CmdArgs) const {
6755 addX86AlignBranchArgs(getToolChain().getDriver(), Args, CmdArgs,
6758 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
6759 StringRef Value = A->getValue();
6760 if (Value == "intel" || Value == "att") {
6761 CmdArgs.push_back("-mllvm");
6762 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
6764 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
6765 << A->getOption().getName() << Value;
6770 void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
6771 ArgStringList &CmdArgs) const {
6772 const llvm::Triple &Triple = getToolChain().getTriple();
6773 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
6775 CmdArgs.push_back("-target-abi");
6776 CmdArgs.push_back(ABIName.data());
6779 void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
6780 const InputInfo &Output, const InputInfoList &Inputs,
6781 const ArgList &Args,
6782 const char *LinkingOutput) const {
6783 ArgStringList CmdArgs;
6785 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
6786 const InputInfo &Input = Inputs[0];
6788 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
6789 const std::string &TripleStr = Triple.getTriple();
6790 const auto &D = getToolChain().getDriver();
6792 // Don't warn about "clang -w -c foo.s"
6793 Args.ClaimAllArgs(options::OPT_w);
6794 // and "clang -emit-llvm -c foo.s"
6795 Args.ClaimAllArgs(options::OPT_emit_llvm);
6797 claimNoWarnArgs(Args);
6799 // Invoke ourselves in -cc1as mode.
6801 // FIXME: Implement custom jobs for internal actions.
6802 CmdArgs.push_back("-cc1as");
6804 // Add the "effective" target triple.
6805 CmdArgs.push_back("-triple");
6806 CmdArgs.push_back(Args.MakeArgString(TripleStr));
6808 // Set the output mode, we currently only expect to be used as a real
6810 CmdArgs.push_back("-filetype");
6811 CmdArgs.push_back("obj");
6813 // Set the main file name, so that debug info works even with
6814 // -save-temps or preprocessed assembly.
6815 CmdArgs.push_back("-main-file-name");
6816 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
6818 // Add the target cpu
6819 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
6821 CmdArgs.push_back("-target-cpu");
6822 CmdArgs.push_back(Args.MakeArgString(CPU));
6825 // Add the target features
6826 getTargetFeatures(D, Triple, Args, CmdArgs, true);
6828 // Ignore explicit -force_cpusubtype_ALL option.
6829 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
6831 // Pass along any -I options so we get proper .include search paths.
6832 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
6834 // Determine the original source input.
6835 const Action *SourceAction = &JA;
6836 while (SourceAction->getKind() != Action::InputClass) {
6837 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
6838 SourceAction = SourceAction->getInputs()[0];
6841 // Forward -g and handle debug info related flags, assuming we are dealing
6842 // with an actual assembly file.
6843 bool WantDebug = false;
6844 unsigned DwarfVersion = 0;
6845 Args.ClaimAllArgs(options::OPT_g_Group);
6846 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
6847 WantDebug = !A->getOption().matches(options::OPT_g0) &&
6848 !A->getOption().matches(options::OPT_ggdb0);
6850 DwarfVersion = DwarfVersionNum(A->getSpelling());
6853 unsigned DefaultDwarfVersion = ParseDebugDefaultVersion(getToolChain(), Args);
6854 if (DwarfVersion == 0)
6855 DwarfVersion = DefaultDwarfVersion;
6857 if (DwarfVersion == 0)
6858 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
6860 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
6862 if (SourceAction->getType() == types::TY_Asm ||
6863 SourceAction->getType() == types::TY_PP_Asm) {
6864 // You might think that it would be ok to set DebugInfoKind outside of
6865 // the guard for source type, however there is a test which asserts
6866 // that some assembler invocation receives no -debug-info-kind,
6867 // and it's not clear whether that test is just overly restrictive.
6868 DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
6869 : codegenoptions::NoDebugInfo);
6870 // Add the -fdebug-compilation-dir flag if needed.
6871 addDebugCompDirArg(Args, CmdArgs, C.getDriver().getVFS());
6873 addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
6875 // Set the AT_producer to the clang version when using the integrated
6876 // assembler on assembly source files.
6877 CmdArgs.push_back("-dwarf-debug-producer");
6878 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
6880 // And pass along -I options
6881 Args.AddAllArgs(CmdArgs, options::OPT_I);
6883 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
6884 llvm::DebuggerKind::Default);
6885 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
6888 // Handle -fPIC et al -- the relocation-model affects the assembler
6889 // for some targets.
6890 llvm::Reloc::Model RelocationModel;
6893 std::tie(RelocationModel, PICLevel, IsPIE) =
6894 ParsePICArgs(getToolChain(), Args);
6896 const char *RMName = RelocationModelName(RelocationModel);
6898 CmdArgs.push_back("-mrelocation-model");
6899 CmdArgs.push_back(RMName);
6902 // Optionally embed the -cc1as level arguments into the debug info, for build
6904 if (getToolChain().UseDwarfDebugFlags()) {
6905 ArgStringList OriginalArgs;
6906 for (const auto &Arg : Args)
6907 Arg->render(Args, OriginalArgs);
6909 SmallString<256> Flags;
6910 const char *Exec = getToolChain().getDriver().getClangProgramPath();
6911 EscapeSpacesAndBackslashes(Exec, Flags);
6912 for (const char *OriginalArg : OriginalArgs) {
6913 SmallString<128> EscapedArg;
6914 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
6916 Flags += EscapedArg;
6918 CmdArgs.push_back("-dwarf-debug-flags");
6919 CmdArgs.push_back(Args.MakeArgString(Flags));
6922 // FIXME: Add -static support, once we have it.
6924 // Add target specific flags.
6925 switch (getToolChain().getArch()) {
6929 case llvm::Triple::mips:
6930 case llvm::Triple::mipsel:
6931 case llvm::Triple::mips64:
6932 case llvm::Triple::mips64el:
6933 AddMIPSTargetArgs(Args, CmdArgs);
6936 case llvm::Triple::x86:
6937 case llvm::Triple::x86_64:
6938 AddX86TargetArgs(Args, CmdArgs);
6941 case llvm::Triple::arm:
6942 case llvm::Triple::armeb:
6943 case llvm::Triple::thumb:
6944 case llvm::Triple::thumbeb:
6945 // This isn't in AddARMTargetArgs because we want to do this for assembly
6947 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
6948 options::OPT_mno_default_build_attributes, true)) {
6949 CmdArgs.push_back("-mllvm");
6950 CmdArgs.push_back("-arm-add-build-attributes");
6954 case llvm::Triple::riscv32:
6955 case llvm::Triple::riscv64:
6956 AddRISCVTargetArgs(Args, CmdArgs);
6960 // Consume all the warning flags. Usually this would be handled more
6961 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
6962 // doesn't handle that so rather than warning about unused flags that are
6963 // actually used, we'll lie by omission instead.
6964 // FIXME: Stop lying and consume only the appropriate driver flags
6965 Args.ClaimAllArgs(options::OPT_W_Group);
6967 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
6968 getToolChain().getDriver());
6970 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
6972 assert(Output.isFilename() && "Unexpected lipo output.");
6973 CmdArgs.push_back("-o");
6974 CmdArgs.push_back(Output.getFilename());
6976 const llvm::Triple &T = getToolChain().getTriple();
6978 if (getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split &&
6979 T.isOSBinFormatELF()) {
6980 CmdArgs.push_back("-split-dwarf-output");
6981 CmdArgs.push_back(SplitDebugName(Args, Input, Output));
6984 assert(Input.isFilename() && "Invalid input.");
6985 CmdArgs.push_back(Input.getFilename());
6987 const char *Exec = getToolChain().getDriver().getClangProgramPath();
6988 C.addCommand(std::make_unique<Command>(
6989 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
6992 // Begin OffloadBundler
6994 void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
6995 const InputInfo &Output,
6996 const InputInfoList &Inputs,
6997 const llvm::opt::ArgList &TCArgs,
6998 const char *LinkingOutput) const {
6999 // The version with only one output is expected to refer to a bundling job.
7000 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
7002 // The bundling command looks like this:
7003 // clang-offload-bundler -type=bc
7004 // -targets=host-triple,openmp-triple1,openmp-triple2
7005 // -outputs=input_file
7006 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
7008 ArgStringList CmdArgs;
7011 CmdArgs.push_back(TCArgs.MakeArgString(
7012 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
7014 assert(JA.getInputs().size() == Inputs.size() &&
7015 "Not have inputs for all dependence actions??");
7018 SmallString<128> Triples;
7019 Triples += "-targets=";
7020 for (unsigned I = 0; I < Inputs.size(); ++I) {
7024 // Find ToolChain for this input.
7025 Action::OffloadKind CurKind = Action::OFK_Host;
7026 const ToolChain *CurTC = &getToolChain();
7027 const Action *CurDep = JA.getInputs()[I];
7029 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
7031 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
7032 assert(CurTC == nullptr && "Expected one dependence!");
7033 CurKind = A->getOffloadingDeviceKind();
7037 Triples += Action::GetOffloadKindName(CurKind);
7039 Triples += CurTC->getTriple().normalize();
7040 if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
7042 Triples += CurDep->getOffloadingArch();
7045 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
7047 // Get bundled file command.
7049 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
7051 // Get unbundled files command.
7052 SmallString<128> UB;
7054 for (unsigned I = 0; I < Inputs.size(); ++I) {
7058 // Find ToolChain for this input.
7059 const ToolChain *CurTC = &getToolChain();
7060 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
7062 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
7063 assert(CurTC == nullptr && "Expected one dependence!");
7067 UB += CurTC->getInputFilename(Inputs[I]);
7069 CmdArgs.push_back(TCArgs.MakeArgString(UB));
7071 // All the inputs are encoded as commands.
7072 C.addCommand(std::make_unique<Command>(
7073 JA, *this, ResponseFileSupport::None(),
7074 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
7078 void OffloadBundler::ConstructJobMultipleOutputs(
7079 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
7080 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
7081 const char *LinkingOutput) const {
7082 // The version with multiple outputs is expected to refer to a unbundling job.
7083 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
7085 // The unbundling command looks like this:
7086 // clang-offload-bundler -type=bc
7087 // -targets=host-triple,openmp-triple1,openmp-triple2
7088 // -inputs=input_file
7089 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
7092 ArgStringList CmdArgs;
7094 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
7095 InputInfo Input = Inputs.front();
7098 CmdArgs.push_back(TCArgs.MakeArgString(
7099 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
7102 SmallString<128> Triples;
7103 Triples += "-targets=";
7104 auto DepInfo = UA.getDependentActionsInfo();
7105 for (unsigned I = 0; I < DepInfo.size(); ++I) {
7109 auto &Dep = DepInfo[I];
7110 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
7112 Triples += Dep.DependentToolChain->getTriple().normalize();
7113 if (Dep.DependentOffloadKind == Action::OFK_HIP &&
7114 !Dep.DependentBoundArch.empty()) {
7116 Triples += Dep.DependentBoundArch;
7120 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
7122 // Get bundled file command.
7124 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
7126 // Get unbundled files command.
7127 SmallString<128> UB;
7129 for (unsigned I = 0; I < Outputs.size(); ++I) {
7132 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
7134 CmdArgs.push_back(TCArgs.MakeArgString(UB));
7135 CmdArgs.push_back("-unbundle");
7137 // All the inputs are encoded as commands.
7138 C.addCommand(std::make_unique<Command>(
7139 JA, *this, ResponseFileSupport::None(),
7140 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
7144 void OffloadWrapper::ConstructJob(Compilation &C, const JobAction &JA,
7145 const InputInfo &Output,
7146 const InputInfoList &Inputs,
7147 const ArgList &Args,
7148 const char *LinkingOutput) const {
7149 ArgStringList CmdArgs;
7151 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
7153 // Add the "effective" target triple.
7154 CmdArgs.push_back("-target");
7155 CmdArgs.push_back(Args.MakeArgString(Triple.getTriple()));
7157 // Add the output file name.
7158 assert(Output.isFilename() && "Invalid output.");
7159 CmdArgs.push_back("-o");
7160 CmdArgs.push_back(Output.getFilename());
7163 for (const InputInfo &I : Inputs) {
7164 assert(I.isFilename() && "Invalid input.");
7165 CmdArgs.push_back(I.getFilename());
7168 C.addCommand(std::make_unique<Command>(
7169 JA, *this, ResponseFileSupport::None(),
7170 Args.MakeArgString(getToolChain().GetProgramPath(getShortName())),