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::DebugInfoConstructor;
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 CmdArgs.push_back(Args.MakeArgString("-fpch-instantiate-templates"));
1202 if (YcArg || YuArg) {
1203 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1204 if (!isa<PrecompileJobAction>(JA)) {
1205 CmdArgs.push_back("-include-pch");
1206 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1207 C, !ThroughHeader.empty()
1209 : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1212 if (ThroughHeader.empty()) {
1213 CmdArgs.push_back(Args.MakeArgString(
1214 Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1217 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1222 bool RenderedImplicitInclude = false;
1223 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1224 if (A->getOption().matches(options::OPT_include)) {
1225 // Handling of gcc-style gch precompiled headers.
1226 bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1227 RenderedImplicitInclude = true;
1229 bool FoundPCH = false;
1230 SmallString<128> P(A->getValue());
1231 // We want the files to have a name like foo.h.pch. Add a dummy extension
1232 // so that replace_extension does the right thing.
1234 llvm::sys::path::replace_extension(P, "pch");
1235 if (llvm::sys::fs::exists(P))
1239 llvm::sys::path::replace_extension(P, "gch");
1240 if (llvm::sys::fs::exists(P)) {
1246 if (IsFirstImplicitInclude) {
1248 CmdArgs.push_back("-include-pch");
1249 CmdArgs.push_back(Args.MakeArgString(P));
1252 // Ignore the PCH if not first on command line and emit warning.
1253 D.Diag(diag::warn_drv_pch_not_first_include) << P
1254 << A->getAsString(Args);
1257 } else if (A->getOption().matches(options::OPT_isystem_after)) {
1258 // Handling of paths which must come late. These entries are handled by
1259 // the toolchain itself after the resource dir is inserted in the right
1261 // Do not claim the argument so that the use of the argument does not
1262 // silently go unnoticed on toolchains which do not honour the option.
1264 } else if (A->getOption().matches(options::OPT_stdlibxx_isystem)) {
1265 // Translated to -internal-isystem by the driver, no need to pass to cc1.
1269 // Not translated, render as usual.
1271 A->render(Args, CmdArgs);
1274 Args.AddAllArgs(CmdArgs,
1275 {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1276 options::OPT_F, options::OPT_index_header_map});
1278 // Add -Wp, and -Xpreprocessor if using the preprocessor.
1280 // FIXME: There is a very unfortunate problem here, some troubled
1281 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1282 // really support that we would have to parse and then translate
1283 // those options. :(
1284 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1285 options::OPT_Xpreprocessor);
1287 // -I- is a deprecated GCC feature, reject it.
1288 if (Arg *A = Args.getLastArg(options::OPT_I_))
1289 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1291 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1292 // -isysroot to the CC1 invocation.
1293 StringRef sysroot = C.getSysRoot();
1294 if (sysroot != "") {
1295 if (!Args.hasArg(options::OPT_isysroot)) {
1296 CmdArgs.push_back("-isysroot");
1297 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1301 // Parse additional include paths from environment variables.
1302 // FIXME: We should probably sink the logic for handling these from the
1303 // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1304 // CPATH - included following the user specified includes (but prior to
1305 // builtin and standard includes).
1306 addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1307 // C_INCLUDE_PATH - system includes enabled when compiling C.
1308 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1309 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1310 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1311 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1312 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1313 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1314 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1316 // While adding the include arguments, we also attempt to retrieve the
1317 // arguments of related offloading toolchains or arguments that are specific
1318 // of an offloading programming model.
1320 // Add C++ include arguments, if needed.
1321 if (types::isCXX(Inputs[0].getType())) {
1322 bool HasStdlibxxIsystem = Args.hasArg(options::OPT_stdlibxx_isystem);
1323 forAllAssociatedToolChains(
1324 C, JA, getToolChain(),
1325 [&Args, &CmdArgs, HasStdlibxxIsystem](const ToolChain &TC) {
1326 HasStdlibxxIsystem ? TC.AddClangCXXStdlibIsystemArgs(Args, CmdArgs)
1327 : TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1331 // Add system include arguments for all targets but IAMCU.
1333 forAllAssociatedToolChains(C, JA, getToolChain(),
1334 [&Args, &CmdArgs](const ToolChain &TC) {
1335 TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1338 // For IAMCU add special include arguments.
1339 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1342 addMacroPrefixMapArg(D, Args, CmdArgs);
1345 // FIXME: Move to target hook.
1346 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1347 switch (Triple.getArch()) {
1351 case llvm::Triple::aarch64:
1352 case llvm::Triple::aarch64_32:
1353 case llvm::Triple::aarch64_be:
1354 case llvm::Triple::arm:
1355 case llvm::Triple::armeb:
1356 case llvm::Triple::thumb:
1357 case llvm::Triple::thumbeb:
1358 if (Triple.isOSDarwin() || Triple.isOSWindows())
1362 case llvm::Triple::ppc:
1363 case llvm::Triple::ppc64:
1364 if (Triple.isOSDarwin())
1368 case llvm::Triple::hexagon:
1369 case llvm::Triple::ppc64le:
1370 case llvm::Triple::riscv32:
1371 case llvm::Triple::riscv64:
1372 case llvm::Triple::systemz:
1373 case llvm::Triple::xcore:
1378 static bool hasMultipleInvocations(const llvm::Triple &Triple,
1379 const ArgList &Args) {
1380 // Supported only on Darwin where we invoke the compiler multiple times
1381 // followed by an invocation to lipo.
1382 if (!Triple.isOSDarwin())
1384 // If more than one "-arch <arch>" is specified, we're targeting multiple
1385 // architectures resulting in a fat binary.
1386 return Args.getAllArgValues(options::OPT_arch).size() > 1;
1389 static bool checkRemarksOptions(const Driver &D, const ArgList &Args,
1390 const llvm::Triple &Triple) {
1391 // When enabling remarks, we need to error if:
1392 // * The remark file is specified but we're targeting multiple architectures,
1393 // which means more than one remark file is being generated.
1394 bool hasMultipleInvocations = ::hasMultipleInvocations(Triple, Args);
1395 bool hasExplicitOutputFile =
1396 Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1397 if (hasMultipleInvocations && hasExplicitOutputFile) {
1398 D.Diag(diag::err_drv_invalid_output_with_multiple_archs)
1399 << "-foptimization-record-file";
1405 static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,
1406 const llvm::Triple &Triple,
1407 const InputInfo &Input,
1408 const InputInfo &Output, const JobAction &JA) {
1409 StringRef Format = "yaml";
1410 if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
1411 Format = A->getValue();
1413 CmdArgs.push_back("-opt-record-file");
1415 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1417 CmdArgs.push_back(A->getValue());
1419 bool hasMultipleArchs =
1420 Triple.isOSDarwin() && // Only supported on Darwin platforms.
1421 Args.getAllArgValues(options::OPT_arch).size() > 1;
1425 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
1426 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
1427 F = FinalOutput->getValue();
1429 if (Format != "yaml" && // For YAML, keep the original behavior.
1430 Triple.isOSDarwin() && // Enable this only on darwin, since it's the only platform supporting .dSYM bundles.
1431 Output.isFilename())
1432 F = Output.getFilename();
1436 // Use the input filename.
1437 F = llvm::sys::path::stem(Input.getBaseInput());
1439 // If we're compiling for an offload architecture (i.e. a CUDA device),
1440 // we need to make the file name for the device compilation different
1441 // from the host compilation.
1442 if (!JA.isDeviceOffloading(Action::OFK_None) &&
1443 !JA.isDeviceOffloading(Action::OFK_Host)) {
1444 llvm::sys::path::replace_extension(F, "");
1445 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),
1446 Triple.normalize());
1448 F += JA.getOffloadingArch();
1452 // If we're having more than one "-arch", we should name the files
1453 // differently so that every cc1 invocation writes to a different file.
1454 // We're doing that by appending "-<arch>" with "<arch>" being the arch
1455 // name from the triple.
1456 if (hasMultipleArchs) {
1457 // First, remember the extension.
1458 SmallString<64> OldExtension = llvm::sys::path::extension(F);
1460 llvm::sys::path::replace_extension(F, "");
1461 // attach -<arch> to it.
1463 F += Triple.getArchName();
1464 // put back the extension.
1465 llvm::sys::path::replace_extension(F, OldExtension);
1468 SmallString<32> Extension;
1469 Extension += "opt.";
1470 Extension += Format;
1472 llvm::sys::path::replace_extension(F, Extension);
1473 CmdArgs.push_back(Args.MakeArgString(F));
1477 Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
1478 CmdArgs.push_back("-opt-record-passes");
1479 CmdArgs.push_back(A->getValue());
1482 if (!Format.empty()) {
1483 CmdArgs.push_back("-opt-record-format");
1484 CmdArgs.push_back(Format.data());
1489 void RenderARMABI(const llvm::Triple &Triple, const ArgList &Args,
1490 ArgStringList &CmdArgs) {
1491 // Select the ABI to use.
1492 // FIXME: Support -meabi.
1493 // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1494 const char *ABIName = nullptr;
1495 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1496 ABIName = A->getValue();
1498 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1499 ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1502 CmdArgs.push_back("-target-abi");
1503 CmdArgs.push_back(ABIName);
1507 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1508 ArgStringList &CmdArgs, bool KernelOrKext) const {
1509 RenderARMABI(Triple, Args, CmdArgs);
1511 // Determine floating point ABI from the options & target defaults.
1512 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1513 if (ABI == arm::FloatABI::Soft) {
1514 // Floating point operations and argument passing are soft.
1515 // FIXME: This changes CPP defines, we need -target-soft-float.
1516 CmdArgs.push_back("-msoft-float");
1517 CmdArgs.push_back("-mfloat-abi");
1518 CmdArgs.push_back("soft");
1519 } else if (ABI == arm::FloatABI::SoftFP) {
1520 // Floating point operations are hard, but argument passing is soft.
1521 CmdArgs.push_back("-mfloat-abi");
1522 CmdArgs.push_back("soft");
1524 // Floating point operations and argument passing are hard.
1525 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1526 CmdArgs.push_back("-mfloat-abi");
1527 CmdArgs.push_back("hard");
1530 // Forward the -mglobal-merge option for explicit control over the pass.
1531 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1532 options::OPT_mno_global_merge)) {
1533 CmdArgs.push_back("-mllvm");
1534 if (A->getOption().matches(options::OPT_mno_global_merge))
1535 CmdArgs.push_back("-arm-global-merge=false");
1537 CmdArgs.push_back("-arm-global-merge=true");
1540 if (!Args.hasFlag(options::OPT_mimplicit_float,
1541 options::OPT_mno_implicit_float, true))
1542 CmdArgs.push_back("-no-implicit-float");
1544 if (Args.getLastArg(options::OPT_mcmse))
1545 CmdArgs.push_back("-mcmse");
1548 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1549 const ArgList &Args, bool KernelOrKext,
1550 ArgStringList &CmdArgs) const {
1551 const ToolChain &TC = getToolChain();
1553 // Add the target features
1554 getTargetFeatures(TC.getDriver(), EffectiveTriple, Args, CmdArgs, false);
1556 // Add target specific flags.
1557 switch (TC.getArch()) {
1561 case llvm::Triple::arm:
1562 case llvm::Triple::armeb:
1563 case llvm::Triple::thumb:
1564 case llvm::Triple::thumbeb:
1565 // Use the effective triple, which takes into account the deployment target.
1566 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1567 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1570 case llvm::Triple::aarch64:
1571 case llvm::Triple::aarch64_32:
1572 case llvm::Triple::aarch64_be:
1573 AddAArch64TargetArgs(Args, CmdArgs);
1574 CmdArgs.push_back("-fallow-half-arguments-and-returns");
1577 case llvm::Triple::mips:
1578 case llvm::Triple::mipsel:
1579 case llvm::Triple::mips64:
1580 case llvm::Triple::mips64el:
1581 AddMIPSTargetArgs(Args, CmdArgs);
1584 case llvm::Triple::ppc:
1585 case llvm::Triple::ppc64:
1586 case llvm::Triple::ppc64le:
1587 AddPPCTargetArgs(Args, CmdArgs);
1590 case llvm::Triple::riscv32:
1591 case llvm::Triple::riscv64:
1592 AddRISCVTargetArgs(Args, CmdArgs);
1595 case llvm::Triple::sparc:
1596 case llvm::Triple::sparcel:
1597 case llvm::Triple::sparcv9:
1598 AddSparcTargetArgs(Args, CmdArgs);
1601 case llvm::Triple::systemz:
1602 AddSystemZTargetArgs(Args, CmdArgs);
1605 case llvm::Triple::x86:
1606 case llvm::Triple::x86_64:
1607 AddX86TargetArgs(Args, CmdArgs);
1610 case llvm::Triple::lanai:
1611 AddLanaiTargetArgs(Args, CmdArgs);
1614 case llvm::Triple::hexagon:
1615 AddHexagonTargetArgs(Args, CmdArgs);
1618 case llvm::Triple::wasm32:
1619 case llvm::Triple::wasm64:
1620 AddWebAssemblyTargetArgs(Args, CmdArgs);
1623 case llvm::Triple::ve:
1624 AddVETargetArgs(Args, CmdArgs);
1630 void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1631 ArgStringList &CmdArgs) {
1632 const char *ABIName = nullptr;
1633 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1634 ABIName = A->getValue();
1635 else if (Triple.isOSDarwin())
1636 ABIName = "darwinpcs";
1640 CmdArgs.push_back("-target-abi");
1641 CmdArgs.push_back(ABIName);
1645 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1646 ArgStringList &CmdArgs) const {
1647 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1649 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1650 Args.hasArg(options::OPT_mkernel) ||
1651 Args.hasArg(options::OPT_fapple_kext))
1652 CmdArgs.push_back("-disable-red-zone");
1654 if (!Args.hasFlag(options::OPT_mimplicit_float,
1655 options::OPT_mno_implicit_float, true))
1656 CmdArgs.push_back("-no-implicit-float");
1658 RenderAArch64ABI(Triple, Args, CmdArgs);
1660 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1661 options::OPT_mno_fix_cortex_a53_835769)) {
1662 CmdArgs.push_back("-mllvm");
1663 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1664 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1666 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1667 } else if (Triple.isAndroid()) {
1668 // Enabled A53 errata (835769) workaround by default on android
1669 CmdArgs.push_back("-mllvm");
1670 CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1673 // Forward the -mglobal-merge option for explicit control over the pass.
1674 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1675 options::OPT_mno_global_merge)) {
1676 CmdArgs.push_back("-mllvm");
1677 if (A->getOption().matches(options::OPT_mno_global_merge))
1678 CmdArgs.push_back("-aarch64-enable-global-merge=false");
1680 CmdArgs.push_back("-aarch64-enable-global-merge=true");
1683 // Enable/disable return address signing and indirect branch targets.
1684 if (Arg *A = Args.getLastArg(options::OPT_msign_return_address_EQ,
1685 options::OPT_mbranch_protection_EQ)) {
1687 const Driver &D = getToolChain().getDriver();
1689 StringRef Scope, Key;
1690 bool IndirectBranches;
1692 if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1693 Scope = A->getValue();
1694 if (!Scope.equals("none") && !Scope.equals("non-leaf") &&
1695 !Scope.equals("all"))
1696 D.Diag(diag::err_invalid_branch_protection)
1697 << Scope << A->getAsString(Args);
1699 IndirectBranches = false;
1702 llvm::AArch64::ParsedBranchProtection PBP;
1703 if (!llvm::AArch64::parseBranchProtection(A->getValue(), PBP, Err))
1704 D.Diag(diag::err_invalid_branch_protection)
1705 << Err << A->getAsString(Args);
1708 IndirectBranches = PBP.BranchTargetEnforcement;
1712 Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1714 Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1715 if (IndirectBranches)
1716 CmdArgs.push_back("-mbranch-target-enforce");
1720 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1721 ArgStringList &CmdArgs) const {
1722 const Driver &D = getToolChain().getDriver();
1725 const llvm::Triple &Triple = getToolChain().getTriple();
1726 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1728 CmdArgs.push_back("-target-abi");
1729 CmdArgs.push_back(ABIName.data());
1731 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args, Triple);
1732 if (ABI == mips::FloatABI::Soft) {
1733 // Floating point operations and argument passing are soft.
1734 CmdArgs.push_back("-msoft-float");
1735 CmdArgs.push_back("-mfloat-abi");
1736 CmdArgs.push_back("soft");
1738 // Floating point operations and argument passing are hard.
1739 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1740 CmdArgs.push_back("-mfloat-abi");
1741 CmdArgs.push_back("hard");
1744 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1745 options::OPT_mno_ldc1_sdc1)) {
1746 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1747 CmdArgs.push_back("-mllvm");
1748 CmdArgs.push_back("-mno-ldc1-sdc1");
1752 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1753 options::OPT_mno_check_zero_division)) {
1754 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1755 CmdArgs.push_back("-mllvm");
1756 CmdArgs.push_back("-mno-check-zero-division");
1760 if (Arg *A = Args.getLastArg(options::OPT_G)) {
1761 StringRef v = A->getValue();
1762 CmdArgs.push_back("-mllvm");
1763 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1767 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1769 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1771 // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1772 // -mgpopt is the default for static, -fno-pic environments but these two
1773 // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1774 // the only case where -mllvm -mgpopt is passed.
1775 // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1776 // passed explicitly when compiling something with -mabicalls
1777 // (implictly) in affect. Currently the warning is in the backend.
1779 // When the ABI in use is N64, we also need to determine the PIC mode that
1780 // is in use, as -fno-pic for N64 implies -mno-abicalls.
1782 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1784 llvm::Reloc::Model RelocationModel;
1787 std::tie(RelocationModel, PICLevel, IsPIE) =
1788 ParsePICArgs(getToolChain(), Args);
1790 NoABICalls = NoABICalls ||
1791 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1793 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1794 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1795 if (NoABICalls && (!GPOpt || WantGPOpt)) {
1796 CmdArgs.push_back("-mllvm");
1797 CmdArgs.push_back("-mgpopt");
1799 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1800 options::OPT_mno_local_sdata);
1801 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1802 options::OPT_mno_extern_sdata);
1803 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1804 options::OPT_mno_embedded_data);
1806 CmdArgs.push_back("-mllvm");
1807 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1808 CmdArgs.push_back("-mlocal-sdata=1");
1810 CmdArgs.push_back("-mlocal-sdata=0");
1812 LocalSData->claim();
1816 CmdArgs.push_back("-mllvm");
1817 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1818 CmdArgs.push_back("-mextern-sdata=1");
1820 CmdArgs.push_back("-mextern-sdata=0");
1822 ExternSData->claim();
1826 CmdArgs.push_back("-mllvm");
1827 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1828 CmdArgs.push_back("-membedded-data=1");
1830 CmdArgs.push_back("-membedded-data=0");
1832 EmbeddedData->claim();
1835 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1836 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1841 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1842 StringRef Val = StringRef(A->getValue());
1843 if (mips::hasCompactBranches(CPUName)) {
1844 if (Val == "never" || Val == "always" || Val == "optimal") {
1845 CmdArgs.push_back("-mllvm");
1846 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1848 D.Diag(diag::err_drv_unsupported_option_argument)
1849 << A->getOption().getName() << Val;
1851 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1854 if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,
1855 options::OPT_mno_relax_pic_calls)) {
1856 if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {
1857 CmdArgs.push_back("-mllvm");
1858 CmdArgs.push_back("-mips-jalr-reloc=0");
1863 void Clang::AddPPCTargetArgs(const ArgList &Args,
1864 ArgStringList &CmdArgs) const {
1865 // Select the ABI to use.
1866 const char *ABIName = nullptr;
1867 const llvm::Triple &T = getToolChain().getTriple();
1868 if (T.isOSBinFormatELF()) {
1869 switch (getToolChain().getArch()) {
1870 case llvm::Triple::ppc64: {
1871 // When targeting a processor that supports QPX, or if QPX is
1872 // specifically enabled, default to using the ABI that supports QPX (so
1873 // long as it is not specifically disabled).
1874 bool HasQPX = false;
1875 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1876 HasQPX = A->getValue() == StringRef("a2q");
1877 HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1879 ABIName = "elfv1-qpx";
1882 if ((T.isOSFreeBSD() && T.getOSMajorVersion() >= 13) ||
1883 T.isOSOpenBSD() || T.isMusl())
1889 case llvm::Triple::ppc64le:
1897 bool IEEELongDouble = false;
1898 for (const Arg *A : Args.filtered(options::OPT_mabi_EQ)) {
1899 StringRef V = A->getValue();
1900 if (V == "ieeelongdouble")
1901 IEEELongDouble = true;
1902 else if (V == "ibmlongdouble")
1903 IEEELongDouble = false;
1904 else if (V != "altivec")
1905 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1906 // the option if given as we don't have backend support for any targets
1907 // that don't use the altivec abi.
1908 ABIName = A->getValue();
1911 CmdArgs.push_back("-mabi=ieeelongdouble");
1913 ppc::FloatABI FloatABI =
1914 ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1916 if (FloatABI == ppc::FloatABI::Soft) {
1917 // Floating point operations and argument passing are soft.
1918 CmdArgs.push_back("-msoft-float");
1919 CmdArgs.push_back("-mfloat-abi");
1920 CmdArgs.push_back("soft");
1922 // Floating point operations and argument passing are hard.
1923 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1924 CmdArgs.push_back("-mfloat-abi");
1925 CmdArgs.push_back("hard");
1929 CmdArgs.push_back("-target-abi");
1930 CmdArgs.push_back(ABIName);
1934 static void SetRISCVSmallDataLimit(const ToolChain &TC, const ArgList &Args,
1935 ArgStringList &CmdArgs) {
1936 const Driver &D = TC.getDriver();
1937 const llvm::Triple &Triple = TC.getTriple();
1938 // Default small data limitation is eight.
1939 const char *SmallDataLimit = "8";
1940 // Get small data limitation.
1941 if (Args.getLastArg(options::OPT_shared, options::OPT_fpic,
1942 options::OPT_fPIC)) {
1943 // Not support linker relaxation for PIC.
1944 SmallDataLimit = "0";
1945 if (Args.hasArg(options::OPT_G)) {
1946 D.Diag(diag::warn_drv_unsupported_sdata);
1948 } else if (Args.getLastArgValue(options::OPT_mcmodel_EQ)
1949 .equals_lower("large") &&
1950 (Triple.getArch() == llvm::Triple::riscv64)) {
1951 // Not support linker relaxation for RV64 with large code model.
1952 SmallDataLimit = "0";
1953 if (Args.hasArg(options::OPT_G)) {
1954 D.Diag(diag::warn_drv_unsupported_sdata);
1956 } else if (Arg *A = Args.getLastArg(options::OPT_G)) {
1957 SmallDataLimit = A->getValue();
1959 // Forward the -msmall-data-limit= option.
1960 CmdArgs.push_back("-msmall-data-limit");
1961 CmdArgs.push_back(SmallDataLimit);
1964 void Clang::AddRISCVTargetArgs(const ArgList &Args,
1965 ArgStringList &CmdArgs) const {
1966 const llvm::Triple &Triple = getToolChain().getTriple();
1967 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
1969 CmdArgs.push_back("-target-abi");
1970 CmdArgs.push_back(ABIName.data());
1972 SetRISCVSmallDataLimit(getToolChain(), Args, CmdArgs);
1975 void Clang::AddSparcTargetArgs(const ArgList &Args,
1976 ArgStringList &CmdArgs) const {
1977 sparc::FloatABI FloatABI =
1978 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1980 if (FloatABI == sparc::FloatABI::Soft) {
1981 // Floating point operations and argument passing are soft.
1982 CmdArgs.push_back("-msoft-float");
1983 CmdArgs.push_back("-mfloat-abi");
1984 CmdArgs.push_back("soft");
1986 // Floating point operations and argument passing are hard.
1987 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1988 CmdArgs.push_back("-mfloat-abi");
1989 CmdArgs.push_back("hard");
1993 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1994 ArgStringList &CmdArgs) const {
1995 bool HasBackchain = Args.hasFlag(options::OPT_mbackchain,
1996 options::OPT_mno_backchain, false);
1997 bool HasPackedStack = Args.hasFlag(options::OPT_mpacked_stack,
1998 options::OPT_mno_packed_stack, false);
1999 systemz::FloatABI FloatABI =
2000 systemz::getSystemZFloatABI(getToolChain().getDriver(), Args);
2001 bool HasSoftFloat = (FloatABI == systemz::FloatABI::Soft);
2002 if (HasBackchain && HasPackedStack && !HasSoftFloat) {
2003 const Driver &D = getToolChain().getDriver();
2004 D.Diag(diag::err_drv_unsupported_opt)
2005 << "-mpacked-stack -mbackchain -mhard-float";
2008 CmdArgs.push_back("-mbackchain");
2010 CmdArgs.push_back("-mpacked-stack");
2012 // Floating point operations and argument passing are soft.
2013 CmdArgs.push_back("-msoft-float");
2014 CmdArgs.push_back("-mfloat-abi");
2015 CmdArgs.push_back("soft");
2019 void Clang::AddX86TargetArgs(const ArgList &Args,
2020 ArgStringList &CmdArgs) const {
2021 const Driver &D = getToolChain().getDriver();
2022 addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/false);
2024 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
2025 Args.hasArg(options::OPT_mkernel) ||
2026 Args.hasArg(options::OPT_fapple_kext))
2027 CmdArgs.push_back("-disable-red-zone");
2029 if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
2030 options::OPT_mno_tls_direct_seg_refs, true))
2031 CmdArgs.push_back("-mno-tls-direct-seg-refs");
2033 // Default to avoid implicit floating-point for kernel/kext code, but allow
2034 // that to be overridden with -mno-soft-float.
2035 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
2036 Args.hasArg(options::OPT_fapple_kext));
2037 if (Arg *A = Args.getLastArg(
2038 options::OPT_msoft_float, options::OPT_mno_soft_float,
2039 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
2040 const Option &O = A->getOption();
2041 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
2042 O.matches(options::OPT_msoft_float));
2044 if (NoImplicitFloat)
2045 CmdArgs.push_back("-no-implicit-float");
2047 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
2048 StringRef Value = A->getValue();
2049 if (Value == "intel" || Value == "att") {
2050 CmdArgs.push_back("-mllvm");
2051 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
2053 D.Diag(diag::err_drv_unsupported_option_argument)
2054 << A->getOption().getName() << Value;
2056 } else if (D.IsCLMode()) {
2057 CmdArgs.push_back("-mllvm");
2058 CmdArgs.push_back("-x86-asm-syntax=intel");
2061 // Set flags to support MCU ABI.
2062 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
2063 CmdArgs.push_back("-mfloat-abi");
2064 CmdArgs.push_back("soft");
2065 CmdArgs.push_back("-mstack-alignment=4");
2069 void Clang::AddHexagonTargetArgs(const ArgList &Args,
2070 ArgStringList &CmdArgs) const {
2071 CmdArgs.push_back("-mqdsp6-compat");
2072 CmdArgs.push_back("-Wreturn-type");
2074 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
2075 CmdArgs.push_back("-mllvm");
2076 CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
2077 Twine(G.getValue())));
2080 if (!Args.hasArg(options::OPT_fno_short_enums))
2081 CmdArgs.push_back("-fshort-enums");
2082 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
2083 CmdArgs.push_back("-mllvm");
2084 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
2086 CmdArgs.push_back("-mllvm");
2087 CmdArgs.push_back("-machine-sink-split=0");
2090 void Clang::AddLanaiTargetArgs(const ArgList &Args,
2091 ArgStringList &CmdArgs) const {
2092 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
2093 StringRef CPUName = A->getValue();
2095 CmdArgs.push_back("-target-cpu");
2096 CmdArgs.push_back(Args.MakeArgString(CPUName));
2098 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
2099 StringRef Value = A->getValue();
2100 // Only support mregparm=4 to support old usage. Report error for all other
2103 if (Value.getAsInteger(10, Mregparm)) {
2104 if (Mregparm != 4) {
2105 getToolChain().getDriver().Diag(
2106 diag::err_drv_unsupported_option_argument)
2107 << A->getOption().getName() << Value;
2113 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
2114 ArgStringList &CmdArgs) const {
2115 // Default to "hidden" visibility.
2116 if (!Args.hasArg(options::OPT_fvisibility_EQ,
2117 options::OPT_fvisibility_ms_compat)) {
2118 CmdArgs.push_back("-fvisibility");
2119 CmdArgs.push_back("hidden");
2123 void Clang::AddVETargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const {
2124 // Floating point operations and argument passing are hard.
2125 CmdArgs.push_back("-mfloat-abi");
2126 CmdArgs.push_back("hard");
2129 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
2130 StringRef Target, const InputInfo &Output,
2131 const InputInfo &Input, const ArgList &Args) const {
2132 // If this is a dry run, do not create the compilation database file.
2133 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2136 using llvm::yaml::escape;
2137 const Driver &D = getToolChain().getDriver();
2139 if (!CompilationDatabase) {
2141 auto File = std::make_unique<llvm::raw_fd_ostream>(Filename, EC,
2142 llvm::sys::fs::OF_Text);
2144 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
2148 CompilationDatabase = std::move(File);
2150 auto &CDB = *CompilationDatabase;
2151 auto CWD = D.getVFS().getCurrentWorkingDirectory();
2154 CDB << "{ \"directory\": \"" << escape(*CWD) << "\"";
2155 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
2156 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
2157 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
2158 SmallString<128> Buf;
2160 Buf += types::getTypeName(Input.getType());
2161 CDB << ", \"" << escape(Buf) << "\"";
2162 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
2165 CDB << ", \"" << escape(Buf) << "\"";
2167 CDB << ", \"" << escape(Input.getFilename()) << "\"";
2168 for (auto &A: Args) {
2169 auto &O = A->getOption();
2170 // Skip language selection, which is positional.
2171 if (O.getID() == options::OPT_x)
2173 // Skip writing dependency output and the compilation database itself.
2174 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
2176 if (O.getID() == options::OPT_gen_cdb_fragment_path)
2179 if (O.getKind() == Option::InputClass)
2181 // All other arguments are quoted and appended.
2183 A->render(Args, ASL);
2185 CDB << ", \"" << escape(it) << "\"";
2189 CDB << ", \"" << escape(Buf) << "\"]},\n";
2192 void Clang::DumpCompilationDatabaseFragmentToDir(
2193 StringRef Dir, Compilation &C, StringRef Target, const InputInfo &Output,
2194 const InputInfo &Input, const llvm::opt::ArgList &Args) const {
2195 // If this is a dry run, do not create the compilation database file.
2196 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2199 if (CompilationDatabase)
2200 DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2202 SmallString<256> Path = Dir;
2203 const auto &Driver = C.getDriver();
2204 Driver.getVFS().makeAbsolute(Path);
2205 auto Err = llvm::sys::fs::create_directory(Path, /*IgnoreExisting=*/true);
2207 Driver.Diag(diag::err_drv_compilationdatabase) << Dir << Err.message();
2211 llvm::sys::path::append(
2213 Twine(llvm::sys::path::filename(Input.getFilename())) + ".%%%%.json");
2215 SmallString<256> TempPath;
2216 Err = llvm::sys::fs::createUniqueFile(Path, FD, TempPath);
2218 Driver.Diag(diag::err_drv_compilationdatabase) << Path << Err.message();
2221 CompilationDatabase =
2222 std::make_unique<llvm::raw_fd_ostream>(FD, /*shouldClose=*/true);
2223 DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2226 static void CollectArgsForIntegratedAssembler(Compilation &C,
2227 const ArgList &Args,
2228 ArgStringList &CmdArgs,
2230 if (UseRelaxAll(C, Args))
2231 CmdArgs.push_back("-mrelax-all");
2233 // Only default to -mincremental-linker-compatible if we think we are
2234 // targeting the MSVC linker.
2235 bool DefaultIncrementalLinkerCompatible =
2236 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2237 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
2238 options::OPT_mno_incremental_linker_compatible,
2239 DefaultIncrementalLinkerCompatible))
2240 CmdArgs.push_back("-mincremental-linker-compatible");
2242 switch (C.getDefaultToolChain().getArch()) {
2243 case llvm::Triple::arm:
2244 case llvm::Triple::armeb:
2245 case llvm::Triple::thumb:
2246 case llvm::Triple::thumbeb:
2247 if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
2248 StringRef Value = A->getValue();
2249 if (Value == "always" || Value == "never" || Value == "arm" ||
2251 CmdArgs.push_back("-mllvm");
2252 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2254 D.Diag(diag::err_drv_unsupported_option_argument)
2255 << A->getOption().getName() << Value;
2263 // If you add more args here, also add them to the block below that
2264 // starts with "// If CollectArgsForIntegratedAssembler() isn't called below".
2266 // When passing -I arguments to the assembler we sometimes need to
2267 // unconditionally take the next argument. For example, when parsing
2268 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2269 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2270 // arg after parsing the '-I' arg.
2271 bool TakeNextArg = false;
2273 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2274 bool UseNoExecStack = C.getDefaultToolChain().isNoExecStackDefault();
2275 const char *MipsTargetFeature = nullptr;
2277 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
2280 for (StringRef Value : A->getValues()) {
2282 CmdArgs.push_back(Value.data());
2283 TakeNextArg = false;
2287 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2288 Value == "-mbig-obj")
2289 continue; // LLVM handles bigobj automatically
2291 switch (C.getDefaultToolChain().getArch()) {
2294 case llvm::Triple::thumb:
2295 case llvm::Triple::thumbeb:
2296 case llvm::Triple::arm:
2297 case llvm::Triple::armeb:
2298 if (Value == "-mthumb")
2299 // -mthumb has already been processed in ComputeLLVMTriple()
2300 // recognize but skip over here.
2303 case llvm::Triple::mips:
2304 case llvm::Triple::mipsel:
2305 case llvm::Triple::mips64:
2306 case llvm::Triple::mips64el:
2307 if (Value == "--trap") {
2308 CmdArgs.push_back("-target-feature");
2309 CmdArgs.push_back("+use-tcc-in-div");
2312 if (Value == "--break") {
2313 CmdArgs.push_back("-target-feature");
2314 CmdArgs.push_back("-use-tcc-in-div");
2317 if (Value.startswith("-msoft-float")) {
2318 CmdArgs.push_back("-target-feature");
2319 CmdArgs.push_back("+soft-float");
2322 if (Value.startswith("-mhard-float")) {
2323 CmdArgs.push_back("-target-feature");
2324 CmdArgs.push_back("-soft-float");
2328 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2329 .Case("-mips1", "+mips1")
2330 .Case("-mips2", "+mips2")
2331 .Case("-mips3", "+mips3")
2332 .Case("-mips4", "+mips4")
2333 .Case("-mips5", "+mips5")
2334 .Case("-mips32", "+mips32")
2335 .Case("-mips32r2", "+mips32r2")
2336 .Case("-mips32r3", "+mips32r3")
2337 .Case("-mips32r5", "+mips32r5")
2338 .Case("-mips32r6", "+mips32r6")
2339 .Case("-mips64", "+mips64")
2340 .Case("-mips64r2", "+mips64r2")
2341 .Case("-mips64r3", "+mips64r3")
2342 .Case("-mips64r5", "+mips64r5")
2343 .Case("-mips64r6", "+mips64r6")
2345 if (MipsTargetFeature)
2349 if (Value == "-force_cpusubtype_ALL") {
2350 // Do nothing, this is the default and we don't support anything else.
2351 } else if (Value == "-L") {
2352 CmdArgs.push_back("-msave-temp-labels");
2353 } else if (Value == "--fatal-warnings") {
2354 CmdArgs.push_back("-massembler-fatal-warnings");
2355 } else if (Value == "--no-warn" || Value == "-W") {
2356 CmdArgs.push_back("-massembler-no-warn");
2357 } else if (Value == "--noexecstack") {
2358 UseNoExecStack = true;
2359 } else if (Value.startswith("-compress-debug-sections") ||
2360 Value.startswith("--compress-debug-sections") ||
2361 Value == "-nocompress-debug-sections" ||
2362 Value == "--nocompress-debug-sections") {
2363 CmdArgs.push_back(Value.data());
2364 } else if (Value == "-mrelax-relocations=yes" ||
2365 Value == "--mrelax-relocations=yes") {
2366 UseRelaxRelocations = true;
2367 } else if (Value == "-mrelax-relocations=no" ||
2368 Value == "--mrelax-relocations=no") {
2369 UseRelaxRelocations = false;
2370 } else if (Value.startswith("-I")) {
2371 CmdArgs.push_back(Value.data());
2372 // We need to consume the next argument if the current arg is a plain
2373 // -I. The next arg will be the include directory.
2376 } else if (Value.startswith("-gdwarf-")) {
2377 // "-gdwarf-N" options are not cc1as options.
2378 unsigned DwarfVersion = DwarfVersionNum(Value);
2379 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2380 CmdArgs.push_back(Value.data());
2382 RenderDebugEnablingArgs(Args, CmdArgs,
2383 codegenoptions::DebugInfoConstructor,
2384 DwarfVersion, llvm::DebuggerKind::Default);
2386 } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2387 Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2388 // Do nothing, we'll validate it later.
2389 } else if (Value == "-defsym") {
2390 if (A->getNumValues() != 2) {
2391 D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2394 const char *S = A->getValue(1);
2395 auto Pair = StringRef(S).split('=');
2396 auto Sym = Pair.first;
2397 auto SVal = Pair.second;
2399 if (Sym.empty() || SVal.empty()) {
2400 D.Diag(diag::err_drv_defsym_invalid_format) << S;
2404 if (SVal.getAsInteger(0, IVal)) {
2405 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2408 CmdArgs.push_back(Value.data());
2410 } else if (Value == "-fdebug-compilation-dir") {
2411 CmdArgs.push_back("-fdebug-compilation-dir");
2413 } else if (Value.consume_front("-fdebug-compilation-dir=")) {
2414 // The flag is a -Wa / -Xassembler argument and Options doesn't
2415 // parse the argument, so this isn't automatically aliased to
2416 // -fdebug-compilation-dir (without '=') here.
2417 CmdArgs.push_back("-fdebug-compilation-dir");
2418 CmdArgs.push_back(Value.data());
2420 D.Diag(diag::err_drv_unsupported_option_argument)
2421 << A->getOption().getName() << Value;
2425 if (UseRelaxRelocations)
2426 CmdArgs.push_back("--mrelax-relocations");
2428 CmdArgs.push_back("-mnoexecstack");
2429 if (MipsTargetFeature != nullptr) {
2430 CmdArgs.push_back("-target-feature");
2431 CmdArgs.push_back(MipsTargetFeature);
2434 // forward -fembed-bitcode to assmebler
2435 if (C.getDriver().embedBitcodeEnabled() ||
2436 C.getDriver().embedBitcodeMarkerOnly())
2437 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2440 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2441 bool OFastEnabled, const ArgList &Args,
2442 ArgStringList &CmdArgs,
2443 const JobAction &JA) {
2444 // Handle various floating point optimization flags, mapping them to the
2445 // appropriate LLVM code generation flags. This is complicated by several
2446 // "umbrella" flags, so we do this by stepping through the flags incrementally
2447 // adjusting what we think is enabled/disabled, then at the end setting the
2448 // LLVM flags based on the final state.
2449 bool HonorINFs = true;
2450 bool HonorNaNs = true;
2451 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2452 bool MathErrno = TC.IsMathErrnoDefault();
2453 bool AssociativeMath = false;
2454 bool ReciprocalMath = false;
2455 bool SignedZeros = true;
2456 bool TrappingMath = false; // Implemented via -ffp-exception-behavior
2457 bool TrappingMathPresent = false; // Is trapping-math in args, and not
2458 // overriden by ffp-exception-behavior?
2459 bool RoundingFPMath = false;
2460 bool RoundingMathPresent = false; // Is rounding-math in args?
2461 // -ffp-model values: strict, fast, precise
2462 StringRef FPModel = "";
2463 // -ffp-exception-behavior options: strict, maytrap, ignore
2464 StringRef FPExceptionBehavior = "";
2465 const llvm::DenormalMode DefaultDenormalFPMath =
2466 TC.getDefaultDenormalModeForType(Args, JA);
2467 const llvm::DenormalMode DefaultDenormalFP32Math =
2468 TC.getDefaultDenormalModeForType(Args, JA, &llvm::APFloat::IEEEsingle());
2470 llvm::DenormalMode DenormalFPMath = DefaultDenormalFPMath;
2471 llvm::DenormalMode DenormalFP32Math = DefaultDenormalFP32Math;
2472 StringRef FPContract = "";
2473 bool StrictFPModel = false;
2476 if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2477 CmdArgs.push_back("-mlimit-float-precision");
2478 CmdArgs.push_back(A->getValue());
2481 for (const Arg *A : Args) {
2482 auto optID = A->getOption().getID();
2483 bool PreciseFPModel = false;
2487 case options::OPT_ffp_model_EQ: {
2488 // If -ffp-model= is seen, reset to fno-fast-math
2491 // Turning *off* -ffast-math restores the toolchain default.
2492 MathErrno = TC.IsMathErrnoDefault();
2493 AssociativeMath = false;
2494 ReciprocalMath = false;
2496 // -fno_fast_math restores default denormal and fpcontract handling
2498 DenormalFPMath = llvm::DenormalMode::getIEEE();
2500 // FIXME: The target may have picked a non-IEEE default mode here based on
2501 // -cl-denorms-are-zero. Should the target consider -fp-model interaction?
2502 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2504 StringRef Val = A->getValue();
2505 if (OFastEnabled && !Val.equals("fast")) {
2506 // Only -ffp-model=fast is compatible with OFast, ignore.
2507 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2508 << Args.MakeArgString("-ffp-model=" + Val)
2512 StrictFPModel = false;
2513 PreciseFPModel = true;
2514 // ffp-model= is a Driver option, it is entirely rewritten into more
2515 // granular options before being passed into cc1.
2516 // Use the gcc option in the switch below.
2517 if (!FPModel.empty() && !FPModel.equals(Val)) {
2518 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2519 << Args.MakeArgString("-ffp-model=" + FPModel)
2520 << Args.MakeArgString("-ffp-model=" + Val);
2523 if (Val.equals("fast")) {
2524 optID = options::OPT_ffast_math;
2526 FPContract = "fast";
2527 } else if (Val.equals("precise")) {
2528 optID = options::OPT_ffp_contract;
2530 FPContract = "fast";
2531 PreciseFPModel = true;
2532 } else if (Val.equals("strict")) {
2533 StrictFPModel = true;
2534 optID = options::OPT_frounding_math;
2535 FPExceptionBehavior = "strict";
2538 TrappingMath = true;
2540 D.Diag(diag::err_drv_unsupported_option_argument)
2541 << A->getOption().getName() << Val;
2547 // If this isn't an FP option skip the claim below
2550 // Options controlling individual features
2551 case options::OPT_fhonor_infinities: HonorINFs = true; break;
2552 case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2553 case options::OPT_fhonor_nans: HonorNaNs = true; break;
2554 case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2555 case options::OPT_fmath_errno: MathErrno = true; break;
2556 case options::OPT_fno_math_errno: MathErrno = false; break;
2557 case options::OPT_fassociative_math: AssociativeMath = true; break;
2558 case options::OPT_fno_associative_math: AssociativeMath = false; break;
2559 case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2560 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2561 case options::OPT_fsigned_zeros: SignedZeros = true; break;
2562 case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2563 case options::OPT_ftrapping_math:
2564 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2565 !FPExceptionBehavior.equals("strict"))
2566 // Warn that previous value of option is overridden.
2567 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2568 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2569 << "-ftrapping-math";
2570 TrappingMath = true;
2571 TrappingMathPresent = true;
2572 FPExceptionBehavior = "strict";
2574 case options::OPT_fno_trapping_math:
2575 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2576 !FPExceptionBehavior.equals("ignore"))
2577 // Warn that previous value of option is overridden.
2578 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2579 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2580 << "-fno-trapping-math";
2581 TrappingMath = false;
2582 TrappingMathPresent = true;
2583 FPExceptionBehavior = "ignore";
2586 case options::OPT_frounding_math:
2587 RoundingFPMath = true;
2588 RoundingMathPresent = true;
2591 case options::OPT_fno_rounding_math:
2592 RoundingFPMath = false;
2593 RoundingMathPresent = false;
2596 case options::OPT_fdenormal_fp_math_EQ:
2597 DenormalFPMath = llvm::parseDenormalFPAttribute(A->getValue());
2598 if (!DenormalFPMath.isValid()) {
2599 D.Diag(diag::err_drv_invalid_value)
2600 << A->getAsString(Args) << A->getValue();
2604 case options::OPT_fdenormal_fp_math_f32_EQ:
2605 DenormalFP32Math = llvm::parseDenormalFPAttribute(A->getValue());
2606 if (!DenormalFP32Math.isValid()) {
2607 D.Diag(diag::err_drv_invalid_value)
2608 << A->getAsString(Args) << A->getValue();
2612 // Validate and pass through -ffp-contract option.
2613 case options::OPT_ffp_contract: {
2614 StringRef Val = A->getValue();
2615 if (PreciseFPModel) {
2616 // -ffp-model=precise enables ffp-contract=fast as a side effect
2617 // the FPContract value has already been set to a string literal
2618 // and the Val string isn't a pertinent value.
2620 } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off"))
2623 D.Diag(diag::err_drv_unsupported_option_argument)
2624 << A->getOption().getName() << Val;
2628 // Validate and pass through -ffp-model option.
2629 case options::OPT_ffp_model_EQ:
2630 // This should only occur in the error case
2631 // since the optID has been replaced by a more granular
2632 // floating point option.
2635 // Validate and pass through -ffp-exception-behavior option.
2636 case options::OPT_ffp_exception_behavior_EQ: {
2637 StringRef Val = A->getValue();
2638 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
2639 !FPExceptionBehavior.equals(Val))
2640 // Warn that previous value of option is overridden.
2641 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2642 << Args.MakeArgString("-ffp-exception-behavior=" + FPExceptionBehavior)
2643 << Args.MakeArgString("-ffp-exception-behavior=" + Val);
2644 TrappingMath = TrappingMathPresent = false;
2645 if (Val.equals("ignore") || Val.equals("maytrap"))
2646 FPExceptionBehavior = Val;
2647 else if (Val.equals("strict")) {
2648 FPExceptionBehavior = Val;
2649 TrappingMath = TrappingMathPresent = true;
2651 D.Diag(diag::err_drv_unsupported_option_argument)
2652 << A->getOption().getName() << Val;
2656 case options::OPT_ffinite_math_only:
2660 case options::OPT_fno_finite_math_only:
2665 case options::OPT_funsafe_math_optimizations:
2666 AssociativeMath = true;
2667 ReciprocalMath = true;
2668 SignedZeros = false;
2669 TrappingMath = false;
2670 FPExceptionBehavior = "";
2672 case options::OPT_fno_unsafe_math_optimizations:
2673 AssociativeMath = false;
2674 ReciprocalMath = false;
2676 TrappingMath = true;
2677 FPExceptionBehavior = "strict";
2679 // The target may have opted to flush by default, so force IEEE.
2680 DenormalFPMath = llvm::DenormalMode::getIEEE();
2681 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2684 case options::OPT_Ofast:
2685 // If -Ofast is the optimization level, then -ffast-math should be enabled
2689 case options::OPT_ffast_math:
2693 AssociativeMath = true;
2694 ReciprocalMath = true;
2695 SignedZeros = false;
2696 TrappingMath = false;
2697 RoundingFPMath = false;
2698 // If fast-math is set then set the fp-contract mode to fast.
2699 FPContract = "fast";
2701 case options::OPT_fno_fast_math:
2704 // Turning on -ffast-math (with either flag) removes the need for
2705 // MathErrno. However, turning *off* -ffast-math merely restores the
2706 // toolchain default (which may be false).
2707 MathErrno = TC.IsMathErrnoDefault();
2708 AssociativeMath = false;
2709 ReciprocalMath = false;
2711 TrappingMath = false;
2712 RoundingFPMath = false;
2713 // -fno_fast_math restores default denormal and fpcontract handling
2714 DenormalFPMath = DefaultDenormalFPMath;
2715 DenormalFP32Math = llvm::DenormalMode::getIEEE();
2719 if (StrictFPModel) {
2720 // If -ffp-model=strict has been specified on command line but
2721 // subsequent options conflict then emit warning diagnostic.
2722 if (HonorINFs && HonorNaNs &&
2723 !AssociativeMath && !ReciprocalMath &&
2724 SignedZeros && TrappingMath && RoundingFPMath &&
2725 (FPContract.equals("off") || FPContract.empty()) &&
2726 DenormalFPMath == llvm::DenormalMode::getIEEE() &&
2727 DenormalFP32Math == llvm::DenormalMode::getIEEE())
2728 // OK: Current Arg doesn't conflict with -ffp-model=strict
2731 StrictFPModel = false;
2733 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2734 << "-ffp-model=strict" <<
2735 ((A->getNumValues() == 0) ? A->getSpelling()
2736 : Args.MakeArgString(A->getSpelling() + A->getValue()));
2740 // If we handled this option claim it
2745 CmdArgs.push_back("-menable-no-infs");
2748 CmdArgs.push_back("-menable-no-nans");
2751 CmdArgs.push_back("-fmath-errno");
2753 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2755 CmdArgs.push_back("-menable-unsafe-fp-math");
2758 CmdArgs.push_back("-fno-signed-zeros");
2760 if (AssociativeMath && !SignedZeros && !TrappingMath)
2761 CmdArgs.push_back("-mreassociate");
2764 CmdArgs.push_back("-freciprocal-math");
2767 // FP Exception Behavior is also set to strict
2768 assert(FPExceptionBehavior.equals("strict"));
2769 CmdArgs.push_back("-ftrapping-math");
2770 } else if (TrappingMathPresent)
2771 CmdArgs.push_back("-fno-trapping-math");
2773 // The default is IEEE.
2774 if (DenormalFPMath != llvm::DenormalMode::getIEEE()) {
2775 llvm::SmallString<64> DenormFlag;
2776 llvm::raw_svector_ostream ArgStr(DenormFlag);
2777 ArgStr << "-fdenormal-fp-math=" << DenormalFPMath;
2778 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));
2781 // Add f32 specific denormal mode flag if it's different.
2782 if (DenormalFP32Math != DenormalFPMath) {
2783 llvm::SmallString<64> DenormFlag;
2784 llvm::raw_svector_ostream ArgStr(DenormFlag);
2785 ArgStr << "-fdenormal-fp-math-f32=" << DenormalFP32Math;
2786 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));
2789 if (!FPContract.empty())
2790 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2792 if (!RoundingFPMath)
2793 CmdArgs.push_back(Args.MakeArgString("-fno-rounding-math"));
2795 if (RoundingFPMath && RoundingMathPresent)
2796 CmdArgs.push_back(Args.MakeArgString("-frounding-math"));
2798 if (!FPExceptionBehavior.empty())
2799 CmdArgs.push_back(Args.MakeArgString("-ffp-exception-behavior=" +
2800 FPExceptionBehavior));
2802 ParseMRecip(D, Args, CmdArgs);
2804 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2805 // individual features enabled by -ffast-math instead of the option itself as
2806 // that's consistent with gcc's behaviour.
2807 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2808 ReciprocalMath && !SignedZeros && !TrappingMath && !RoundingFPMath) {
2809 CmdArgs.push_back("-ffast-math");
2810 if (FPModel.equals("fast")) {
2811 if (FPContract.equals("fast"))
2812 // All set, do nothing.
2814 else if (FPContract.empty())
2815 // Enable -ffp-contract=fast
2816 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=fast"));
2818 D.Diag(clang::diag::warn_drv_overriding_flag_option)
2819 << "-ffp-model=fast"
2820 << Args.MakeArgString("-ffp-contract=" + FPContract);
2824 // Handle __FINITE_MATH_ONLY__ similarly.
2825 if (!HonorINFs && !HonorNaNs)
2826 CmdArgs.push_back("-ffinite-math-only");
2828 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2829 CmdArgs.push_back("-mfpmath");
2830 CmdArgs.push_back(A->getValue());
2833 // Disable a codegen optimization for floating-point casts.
2834 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2835 options::OPT_fstrict_float_cast_overflow, false))
2836 CmdArgs.push_back("-fno-strict-float-cast-overflow");
2839 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2840 const llvm::Triple &Triple,
2841 const InputInfo &Input) {
2842 // Enable region store model by default.
2843 CmdArgs.push_back("-analyzer-store=region");
2845 // Treat blocks as analysis entry points.
2846 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2848 // Add default argument set.
2849 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2850 CmdArgs.push_back("-analyzer-checker=core");
2851 CmdArgs.push_back("-analyzer-checker=apiModeling");
2853 if (!Triple.isWindowsMSVCEnvironment()) {
2854 CmdArgs.push_back("-analyzer-checker=unix");
2856 // Enable "unix" checkers that also work on Windows.
2857 CmdArgs.push_back("-analyzer-checker=unix.API");
2858 CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2859 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2860 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2861 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2862 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2865 // Disable some unix checkers for PS4.
2866 if (Triple.isPS4CPU()) {
2867 CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2868 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2871 if (Triple.isOSDarwin()) {
2872 CmdArgs.push_back("-analyzer-checker=osx");
2874 "-analyzer-checker=security.insecureAPI.decodeValueOfObjCType");
2876 else if (Triple.isOSFuchsia())
2877 CmdArgs.push_back("-analyzer-checker=fuchsia");
2879 CmdArgs.push_back("-analyzer-checker=deadcode");
2881 if (types::isCXX(Input.getType()))
2882 CmdArgs.push_back("-analyzer-checker=cplusplus");
2884 if (!Triple.isPS4CPU()) {
2885 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2886 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2887 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2888 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2889 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2890 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2893 // Default nullability checks.
2894 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2895 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2898 // Set the output format. The default is plist, for (lame) historical reasons.
2899 CmdArgs.push_back("-analyzer-output");
2900 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2901 CmdArgs.push_back(A->getValue());
2903 CmdArgs.push_back("plist");
2905 // Disable the presentation of standard compiler warnings when using
2906 // --analyze. We only want to show static analyzer diagnostics or frontend
2908 CmdArgs.push_back("-w");
2910 // Add -Xanalyzer arguments when running as analyzer.
2911 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2914 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2915 ArgStringList &CmdArgs, bool KernelOrKext) {
2916 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2918 // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2919 // doesn't even have a stack!
2920 if (EffectiveTriple.isNVPTX())
2923 // -stack-protector=0 is default.
2924 unsigned StackProtectorLevel = 0;
2925 unsigned DefaultStackProtectorLevel =
2926 TC.GetDefaultStackProtectorLevel(KernelOrKext);
2928 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2929 options::OPT_fstack_protector_all,
2930 options::OPT_fstack_protector_strong,
2931 options::OPT_fstack_protector)) {
2932 if (A->getOption().matches(options::OPT_fstack_protector))
2933 StackProtectorLevel =
2934 std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2935 else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2936 StackProtectorLevel = LangOptions::SSPStrong;
2937 else if (A->getOption().matches(options::OPT_fstack_protector_all))
2938 StackProtectorLevel = LangOptions::SSPReq;
2940 StackProtectorLevel = DefaultStackProtectorLevel;
2943 if (StackProtectorLevel) {
2944 CmdArgs.push_back("-stack-protector");
2945 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2948 // --param ssp-buffer-size=
2949 for (const Arg *A : Args.filtered(options::OPT__param)) {
2950 StringRef Str(A->getValue());
2951 if (Str.startswith("ssp-buffer-size=")) {
2952 if (StackProtectorLevel) {
2953 CmdArgs.push_back("-stack-protector-buffer-size");
2954 // FIXME: Verify the argument is a valid integer.
2955 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2962 static void RenderSCPOptions(const ToolChain &TC, const ArgList &Args,
2963 ArgStringList &CmdArgs) {
2964 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2966 if (!EffectiveTriple.isOSLinux())
2969 if (!EffectiveTriple.isX86() && !EffectiveTriple.isSystemZ() &&
2970 !EffectiveTriple.isPPC64())
2973 if (Args.hasFlag(options::OPT_fstack_clash_protection,
2974 options::OPT_fno_stack_clash_protection, false))
2975 CmdArgs.push_back("-fstack-clash-protection");
2978 static void RenderTrivialAutoVarInitOptions(const Driver &D,
2979 const ToolChain &TC,
2980 const ArgList &Args,
2981 ArgStringList &CmdArgs) {
2982 auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
2983 StringRef TrivialAutoVarInit = "";
2985 for (const Arg *A : Args) {
2986 switch (A->getOption().getID()) {
2989 case options::OPT_ftrivial_auto_var_init: {
2991 StringRef Val = A->getValue();
2992 if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
2993 TrivialAutoVarInit = Val;
2995 D.Diag(diag::err_drv_unsupported_option_argument)
2996 << A->getOption().getName() << Val;
3002 if (TrivialAutoVarInit.empty())
3003 switch (DefaultTrivialAutoVarInit) {
3004 case LangOptions::TrivialAutoVarInitKind::Uninitialized:
3006 case LangOptions::TrivialAutoVarInitKind::Pattern:
3007 TrivialAutoVarInit = "pattern";
3009 case LangOptions::TrivialAutoVarInitKind::Zero:
3010 TrivialAutoVarInit = "zero";
3014 if (!TrivialAutoVarInit.empty()) {
3015 if (TrivialAutoVarInit == "zero" && !Args.hasArg(options::OPT_enable_trivial_var_init_zero))
3016 D.Diag(diag::err_drv_trivial_auto_var_init_zero_disabled);
3018 Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
3022 Args.getLastArg(options::OPT_ftrivial_auto_var_init_stop_after)) {
3023 if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||
3025 Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==
3027 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_missing_dependency);
3029 StringRef Val = A->getValue();
3030 if (std::stoi(Val.str()) <= 0)
3031 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_invalid_value);
3033 Args.MakeArgString("-ftrivial-auto-var-init-stop-after=" + Val));
3037 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
3038 // cl-denorms-are-zero is not forwarded. It is translated into a generic flag
3039 // for denormal flushing handling based on the target.
3040 const unsigned ForwardedArguments[] = {
3041 options::OPT_cl_opt_disable,
3042 options::OPT_cl_strict_aliasing,
3043 options::OPT_cl_single_precision_constant,
3044 options::OPT_cl_finite_math_only,
3045 options::OPT_cl_kernel_arg_info,
3046 options::OPT_cl_unsafe_math_optimizations,
3047 options::OPT_cl_fast_relaxed_math,
3048 options::OPT_cl_mad_enable,
3049 options::OPT_cl_no_signed_zeros,
3050 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
3051 options::OPT_cl_uniform_work_group_size
3054 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
3055 std::string CLStdStr = std::string("-cl-std=") + A->getValue();
3056 CmdArgs.push_back(Args.MakeArgString(CLStdStr));
3059 for (const auto &Arg : ForwardedArguments)
3060 if (const auto *A = Args.getLastArg(Arg))
3061 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
3064 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
3065 ArgStringList &CmdArgs) {
3066 bool ARCMTEnabled = false;
3067 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
3068 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
3069 options::OPT_ccc_arcmt_modify,
3070 options::OPT_ccc_arcmt_migrate)) {
3071 ARCMTEnabled = true;
3072 switch (A->getOption().getID()) {
3073 default: llvm_unreachable("missed a case");
3074 case options::OPT_ccc_arcmt_check:
3075 CmdArgs.push_back("-arcmt-check");
3077 case options::OPT_ccc_arcmt_modify:
3078 CmdArgs.push_back("-arcmt-modify");
3080 case options::OPT_ccc_arcmt_migrate:
3081 CmdArgs.push_back("-arcmt-migrate");
3082 CmdArgs.push_back("-mt-migrate-directory");
3083 CmdArgs.push_back(A->getValue());
3085 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
3086 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
3091 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
3092 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
3093 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
3096 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
3098 D.Diag(diag::err_drv_argument_not_allowed_with)
3099 << A->getAsString(Args) << "-ccc-arcmt-migrate";
3101 CmdArgs.push_back("-mt-migrate-directory");
3102 CmdArgs.push_back(A->getValue());
3104 if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
3105 options::OPT_objcmt_migrate_subscripting,
3106 options::OPT_objcmt_migrate_property)) {
3107 // None specified, means enable them all.
3108 CmdArgs.push_back("-objcmt-migrate-literals");
3109 CmdArgs.push_back("-objcmt-migrate-subscripting");
3110 CmdArgs.push_back("-objcmt-migrate-property");
3112 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
3113 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
3114 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
3117 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
3118 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
3119 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
3120 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
3121 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
3122 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
3123 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
3124 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
3125 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
3126 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
3127 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
3128 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
3129 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
3130 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
3131 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
3132 Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
3136 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
3137 const ArgList &Args, ArgStringList &CmdArgs) {
3138 // -fbuiltin is default unless -mkernel is used.
3140 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
3141 !Args.hasArg(options::OPT_mkernel));
3143 CmdArgs.push_back("-fno-builtin");
3145 // -ffreestanding implies -fno-builtin.
3146 if (Args.hasArg(options::OPT_ffreestanding))
3147 UseBuiltins = false;
3149 // Process the -fno-builtin-* options.
3150 for (const auto &Arg : Args) {
3151 const Option &O = Arg->getOption();
3152 if (!O.matches(options::OPT_fno_builtin_))
3157 // If -fno-builtin is specified, then there's no need to pass the option to
3162 StringRef FuncName = Arg->getValue();
3163 CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
3166 // le32-specific flags:
3167 // -fno-math-builtin: clang should not convert math builtins to intrinsics
3169 if (TC.getArch() == llvm::Triple::le32)
3170 CmdArgs.push_back("-fno-math-builtin");
3173 bool Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
3174 if (llvm::sys::path::cache_directory(Result)) {
3175 llvm::sys::path::append(Result, "clang");
3176 llvm::sys::path::append(Result, "ModuleCache");
3182 static void RenderModulesOptions(Compilation &C, const Driver &D,
3183 const ArgList &Args, const InputInfo &Input,
3184 const InputInfo &Output,
3185 ArgStringList &CmdArgs, bool &HaveModules) {
3186 // -fmodules enables the use of precompiled modules (off by default).
3187 // Users can pass -fno-cxx-modules to turn off modules support for
3188 // C++/Objective-C++ programs.
3189 bool HaveClangModules = false;
3190 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
3191 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
3192 options::OPT_fno_cxx_modules, true);
3193 if (AllowedInCXX || !types::isCXX(Input.getType())) {
3194 CmdArgs.push_back("-fmodules");
3195 HaveClangModules = true;
3199 HaveModules |= HaveClangModules;
3200 if (Args.hasArg(options::OPT_fmodules_ts)) {
3201 CmdArgs.push_back("-fmodules-ts");
3205 // -fmodule-maps enables implicit reading of module map files. By default,
3206 // this is enabled if we are using Clang's flavor of precompiled modules.
3207 if (Args.hasFlag(options::OPT_fimplicit_module_maps,
3208 options::OPT_fno_implicit_module_maps, HaveClangModules))
3209 CmdArgs.push_back("-fimplicit-module-maps");
3211 // -fmodules-decluse checks that modules used are declared so (off by default)
3212 if (Args.hasFlag(options::OPT_fmodules_decluse,
3213 options::OPT_fno_modules_decluse, false))
3214 CmdArgs.push_back("-fmodules-decluse");
3216 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
3217 // all #included headers are part of modules.
3218 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
3219 options::OPT_fno_modules_strict_decluse, false))
3220 CmdArgs.push_back("-fmodules-strict-decluse");
3222 // -fno-implicit-modules turns off implicitly compiling modules on demand.
3223 bool ImplicitModules = false;
3224 if (!Args.hasFlag(options::OPT_fimplicit_modules,
3225 options::OPT_fno_implicit_modules, HaveClangModules)) {
3227 CmdArgs.push_back("-fno-implicit-modules");
3228 } else if (HaveModules) {
3229 ImplicitModules = true;
3230 // -fmodule-cache-path specifies where our implicitly-built module files
3231 // should be written.
3232 SmallString<128> Path;
3233 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
3234 Path = A->getValue();
3236 bool HasPath = true;
3237 if (C.isForDiagnostics()) {
3238 // When generating crash reports, we want to emit the modules along with
3239 // the reproduction sources, so we ignore any provided module path.
3240 Path = Output.getFilename();
3241 llvm::sys::path::replace_extension(Path, ".cache");
3242 llvm::sys::path::append(Path, "modules");
3243 } else if (Path.empty()) {
3244 // No module path was provided: use the default.
3245 HasPath = Driver::getDefaultModuleCachePath(Path);
3248 // `HasPath` will only be false if getDefaultModuleCachePath() fails.
3249 // That being said, that failure is unlikely and not caching is harmless.
3251 const char Arg[] = "-fmodules-cache-path=";
3252 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
3253 CmdArgs.push_back(Args.MakeArgString(Path));
3258 // -fprebuilt-module-path specifies where to load the prebuilt module files.
3259 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
3260 CmdArgs.push_back(Args.MakeArgString(
3261 std::string("-fprebuilt-module-path=") + A->getValue()));
3264 if (Args.hasFlag(options::OPT_fmodules_validate_input_files_content,
3265 options::OPT_fno_modules_validate_input_files_content,
3267 CmdArgs.push_back("-fvalidate-ast-input-files-content");
3270 // -fmodule-name specifies the module that is currently being built (or
3271 // used for header checking by -fmodule-maps).
3272 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
3274 // -fmodule-map-file can be used to specify files containing module
3276 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
3278 // -fbuiltin-module-map can be used to load the clang
3279 // builtin headers modulemap file.
3280 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
3281 SmallString<128> BuiltinModuleMap(D.ResourceDir);
3282 llvm::sys::path::append(BuiltinModuleMap, "include");
3283 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
3284 if (llvm::sys::fs::exists(BuiltinModuleMap))
3286 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
3289 // The -fmodule-file=<name>=<file> form specifies the mapping of module
3290 // names to precompiled module files (the module is loaded only if used).
3291 // The -fmodule-file=<file> form can be used to unconditionally load
3292 // precompiled module files (whether used or not).
3294 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
3296 Args.ClaimAllArgs(options::OPT_fmodule_file);
3298 // When building modules and generating crashdumps, we need to dump a module
3299 // dependency VFS alongside the output.
3300 if (HaveClangModules && C.isForDiagnostics()) {
3301 SmallString<128> VFSDir(Output.getFilename());
3302 llvm::sys::path::replace_extension(VFSDir, ".cache");
3303 // Add the cache directory as a temp so the crash diagnostics pick it up.
3304 C.addTempFile(Args.MakeArgString(VFSDir));
3306 llvm::sys::path::append(VFSDir, "vfs");
3307 CmdArgs.push_back("-module-dependency-dir");
3308 CmdArgs.push_back(Args.MakeArgString(VFSDir));
3311 if (HaveClangModules)
3312 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
3314 // Pass through all -fmodules-ignore-macro arguments.
3315 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
3316 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
3317 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
3319 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
3321 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
3322 if (Args.hasArg(options::OPT_fbuild_session_timestamp))
3323 D.Diag(diag::err_drv_argument_not_allowed_with)
3324 << A->getAsString(Args) << "-fbuild-session-timestamp";
3326 llvm::sys::fs::file_status Status;
3327 if (llvm::sys::fs::status(A->getValue(), Status))
3328 D.Diag(diag::err_drv_no_such_file) << A->getValue();
3330 Args.MakeArgString("-fbuild-session-timestamp=" +
3331 Twine((uint64_t)Status.getLastModificationTime()
3336 if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
3337 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
3338 options::OPT_fbuild_session_file))
3339 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
3341 Args.AddLastArg(CmdArgs,
3342 options::OPT_fmodules_validate_once_per_build_session);
3345 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
3346 options::OPT_fno_modules_validate_system_headers,
3348 CmdArgs.push_back("-fmodules-validate-system-headers");
3350 Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
3353 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
3354 ArgStringList &CmdArgs) {
3355 // -fsigned-char is default.
3356 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
3357 options::OPT_fno_signed_char,
3358 options::OPT_funsigned_char,
3359 options::OPT_fno_unsigned_char)) {
3360 if (A->getOption().matches(options::OPT_funsigned_char) ||
3361 A->getOption().matches(options::OPT_fno_signed_char)) {
3362 CmdArgs.push_back("-fno-signed-char");
3364 } else if (!isSignedCharDefault(T)) {
3365 CmdArgs.push_back("-fno-signed-char");
3368 // The default depends on the language standard.
3369 Args.AddLastArg(CmdArgs, options::OPT_fchar8__t, options::OPT_fno_char8__t);
3371 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
3372 options::OPT_fno_short_wchar)) {
3373 if (A->getOption().matches(options::OPT_fshort_wchar)) {
3374 CmdArgs.push_back("-fwchar-type=short");
3375 CmdArgs.push_back("-fno-signed-wchar");
3377 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
3378 CmdArgs.push_back("-fwchar-type=int");
3379 if (IsARM && !(T.isOSWindows() || T.isOSNetBSD() ||
3381 CmdArgs.push_back("-fno-signed-wchar");
3383 CmdArgs.push_back("-fsigned-wchar");
3388 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
3389 const llvm::Triple &T, const ArgList &Args,
3390 ObjCRuntime &Runtime, bool InferCovariantReturns,
3391 const InputInfo &Input, ArgStringList &CmdArgs) {
3392 const llvm::Triple::ArchType Arch = TC.getArch();
3394 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
3395 // is the default. Except for deployment target of 10.5, next runtime is
3396 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
3397 if (Runtime.isNonFragile()) {
3398 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
3399 options::OPT_fno_objc_legacy_dispatch,
3400 Runtime.isLegacyDispatchDefaultForArch(Arch))) {
3401 if (TC.UseObjCMixedDispatch())
3402 CmdArgs.push_back("-fobjc-dispatch-method=mixed");
3404 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
3408 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
3409 // to do Array/Dictionary subscripting by default.
3410 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
3411 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
3412 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
3414 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
3415 // NOTE: This logic is duplicated in ToolChains.cpp.
3416 if (isObjCAutoRefCount(Args)) {
3419 CmdArgs.push_back("-fobjc-arc");
3421 // FIXME: It seems like this entire block, and several around it should be
3422 // wrapped in isObjC, but for now we just use it here as this is where it
3423 // was being used previously.
3424 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
3425 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
3426 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
3428 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
3431 // Allow the user to enable full exceptions code emission.
3432 // We default off for Objective-C, on for Objective-C++.
3433 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
3434 options::OPT_fno_objc_arc_exceptions,
3435 /*Default=*/types::isCXX(Input.getType())))
3436 CmdArgs.push_back("-fobjc-arc-exceptions");
3439 // Silence warning for full exception code emission options when explicitly
3440 // set to use no ARC.
3441 if (Args.hasArg(options::OPT_fno_objc_arc)) {
3442 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
3443 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
3446 // Allow the user to control whether messages can be converted to runtime
3448 if (types::isObjC(Input.getType())) {
3449 auto *Arg = Args.getLastArg(
3450 options::OPT_fobjc_convert_messages_to_runtime_calls,
3451 options::OPT_fno_objc_convert_messages_to_runtime_calls);
3453 Arg->getOption().matches(
3454 options::OPT_fno_objc_convert_messages_to_runtime_calls))
3455 CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
3458 // -fobjc-infer-related-result-type is the default, except in the Objective-C
3460 if (InferCovariantReturns)
3461 CmdArgs.push_back("-fno-objc-infer-related-result-type");
3463 // Pass down -fobjc-weak or -fno-objc-weak if present.
3464 if (types::isObjC(Input.getType())) {
3466 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
3469 } else if (!Runtime.allowsWeak()) {
3470 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
3471 D.Diag(diag::err_objc_weak_unsupported);
3473 WeakArg->render(Args, CmdArgs);
3478 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
3479 ArgStringList &CmdArgs) {
3480 bool CaretDefault = true;
3481 bool ColumnDefault = true;
3483 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
3484 options::OPT__SLASH_diagnostics_column,
3485 options::OPT__SLASH_diagnostics_caret)) {
3486 switch (A->getOption().getID()) {
3487 case options::OPT__SLASH_diagnostics_caret:
3488 CaretDefault = true;
3489 ColumnDefault = true;
3491 case options::OPT__SLASH_diagnostics_column:
3492 CaretDefault = false;
3493 ColumnDefault = true;
3495 case options::OPT__SLASH_diagnostics_classic:
3496 CaretDefault = false;
3497 ColumnDefault = false;
3502 // -fcaret-diagnostics is default.
3503 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
3504 options::OPT_fno_caret_diagnostics, CaretDefault))
3505 CmdArgs.push_back("-fno-caret-diagnostics");
3507 // -fdiagnostics-fixit-info is default, only pass non-default.
3508 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
3509 options::OPT_fno_diagnostics_fixit_info))
3510 CmdArgs.push_back("-fno-diagnostics-fixit-info");
3512 // Enable -fdiagnostics-show-option by default.
3513 if (!Args.hasFlag(options::OPT_fdiagnostics_show_option,
3514 options::OPT_fno_diagnostics_show_option, true))
3515 CmdArgs.push_back("-fno-diagnostics-show-option");
3518 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
3519 CmdArgs.push_back("-fdiagnostics-show-category");
3520 CmdArgs.push_back(A->getValue());
3523 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
3524 options::OPT_fno_diagnostics_show_hotness, false))
3525 CmdArgs.push_back("-fdiagnostics-show-hotness");
3528 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
3530 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
3531 CmdArgs.push_back(Args.MakeArgString(Opt));
3534 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
3535 CmdArgs.push_back("-fdiagnostics-format");
3536 CmdArgs.push_back(A->getValue());
3539 if (const Arg *A = Args.getLastArg(
3540 options::OPT_fdiagnostics_show_note_include_stack,
3541 options::OPT_fno_diagnostics_show_note_include_stack)) {
3542 const Option &O = A->getOption();
3543 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
3544 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
3546 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
3549 // Color diagnostics are parsed by the driver directly from argv and later
3550 // re-parsed to construct this job; claim any possible color diagnostic here
3551 // to avoid warn_drv_unused_argument and diagnose bad
3552 // OPT_fdiagnostics_color_EQ values.
3553 for (const Arg *A : Args) {
3554 const Option &O = A->getOption();
3555 if (!O.matches(options::OPT_fcolor_diagnostics) &&
3556 !O.matches(options::OPT_fdiagnostics_color) &&
3557 !O.matches(options::OPT_fno_color_diagnostics) &&
3558 !O.matches(options::OPT_fno_diagnostics_color) &&
3559 !O.matches(options::OPT_fdiagnostics_color_EQ))
3562 if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
3563 StringRef Value(A->getValue());
3564 if (Value != "always" && Value != "never" && Value != "auto")
3565 D.Diag(diag::err_drv_clang_unsupported)
3566 << ("-fdiagnostics-color=" + Value).str();
3571 if (D.getDiags().getDiagnosticOptions().ShowColors)
3572 CmdArgs.push_back("-fcolor-diagnostics");
3574 if (Args.hasArg(options::OPT_fansi_escape_codes))
3575 CmdArgs.push_back("-fansi-escape-codes");
3577 if (!Args.hasFlag(options::OPT_fshow_source_location,
3578 options::OPT_fno_show_source_location))
3579 CmdArgs.push_back("-fno-show-source-location");
3581 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
3582 CmdArgs.push_back("-fdiagnostics-absolute-paths");
3584 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
3586 CmdArgs.push_back("-fno-show-column");
3588 if (!Args.hasFlag(options::OPT_fspell_checking,
3589 options::OPT_fno_spell_checking))
3590 CmdArgs.push_back("-fno-spell-checking");
3593 enum class DwarfFissionKind { None, Split, Single };
3595 static DwarfFissionKind getDebugFissionKind(const Driver &D,
3596 const ArgList &Args, Arg *&Arg) {
3598 Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ);
3600 return DwarfFissionKind::None;
3602 if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
3603 return DwarfFissionKind::Split;
3605 StringRef Value = Arg->getValue();
3606 if (Value == "split")
3607 return DwarfFissionKind::Split;
3608 if (Value == "single")
3609 return DwarfFissionKind::Single;
3611 D.Diag(diag::err_drv_unsupported_option_argument)
3612 << Arg->getOption().getName() << Arg->getValue();
3613 return DwarfFissionKind::None;
3616 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
3617 const llvm::Triple &T, const ArgList &Args,
3618 bool EmitCodeView, ArgStringList &CmdArgs,
3619 codegenoptions::DebugInfoKind &DebugInfoKind,
3620 DwarfFissionKind &DwarfFission) {
3621 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3622 options::OPT_fno_debug_info_for_profiling, false) &&
3623 checkDebugInfoOption(
3624 Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
3625 CmdArgs.push_back("-fdebug-info-for-profiling");
3627 // The 'g' groups options involve a somewhat intricate sequence of decisions
3628 // about what to pass from the driver to the frontend, but by the time they
3629 // reach cc1 they've been factored into three well-defined orthogonal choices:
3630 // * what level of debug info to generate
3631 // * what dwarf version to write
3632 // * what debugger tuning to use
3633 // This avoids having to monkey around further in cc1 other than to disable
3634 // codeview if not running in a Windows environment. Perhaps even that
3635 // decision should be made in the driver as well though.
3636 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
3638 bool SplitDWARFInlining =
3639 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
3640 options::OPT_fno_split_dwarf_inlining, false);
3642 Args.ClaimAllArgs(options::OPT_g_Group);
3645 DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
3647 if (DwarfFission != DwarfFissionKind::None &&
3648 !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
3649 DwarfFission = DwarfFissionKind::None;
3650 SplitDWARFInlining = false;
3654 Args.getLastArg(options::OPT_g_Group, options::OPT_gsplit_dwarf,
3655 options::OPT_gsplit_dwarf_EQ)) {
3656 DebugInfoKind = codegenoptions::DebugInfoConstructor;
3658 // If the last option explicitly specified a debug-info level, use it.
3659 if (checkDebugInfoOption(A, Args, D, TC) &&
3660 A->getOption().matches(options::OPT_gN_Group)) {
3661 DebugInfoKind = DebugLevelToInfoKind(*A);
3662 // For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
3663 // complicated if you've disabled inline info in the skeleton CUs
3664 // (SplitDWARFInlining) - then there's value in composing split-dwarf and
3665 // line-tables-only, so let those compose naturally in that case.
3666 if (DebugInfoKind == codegenoptions::NoDebugInfo ||
3667 DebugInfoKind == codegenoptions::DebugDirectivesOnly ||
3668 (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
3669 SplitDWARFInlining))
3670 DwarfFission = DwarfFissionKind::None;
3674 // If a debugger tuning argument appeared, remember it.
3676 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
3677 if (checkDebugInfoOption(A, Args, D, TC)) {
3678 if (A->getOption().matches(options::OPT_glldb))
3679 DebuggerTuning = llvm::DebuggerKind::LLDB;
3680 else if (A->getOption().matches(options::OPT_gsce))
3681 DebuggerTuning = llvm::DebuggerKind::SCE;
3683 DebuggerTuning = llvm::DebuggerKind::GDB;
3687 // If a -gdwarf argument appeared, remember it.
3688 const Arg *GDwarfN = Args.getLastArg(
3689 options::OPT_gdwarf_2, options::OPT_gdwarf_3, options::OPT_gdwarf_4,
3690 options::OPT_gdwarf_5, options::OPT_gdwarf);
3691 bool EmitDwarf = false;
3693 if (checkDebugInfoOption(GDwarfN, Args, D, TC))
3699 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
3700 if (checkDebugInfoOption(A, Args, D, TC))
3701 EmitCodeView = true;
3704 // If the user asked for debug info but did not explicitly specify -gcodeview
3705 // or -gdwarf, ask the toolchain for the default format.
3706 if (!EmitCodeView && !EmitDwarf &&
3707 DebugInfoKind != codegenoptions::NoDebugInfo) {
3708 switch (TC.getDefaultDebugFormat()) {
3709 case codegenoptions::DIF_CodeView:
3710 EmitCodeView = true;
3712 case codegenoptions::DIF_DWARF:
3718 unsigned DWARFVersion = 0;
3719 unsigned DefaultDWARFVersion = ParseDebugDefaultVersion(TC, Args);
3721 // Start with the platform default DWARF version
3722 DWARFVersion = TC.GetDefaultDwarfVersion();
3723 assert(DWARFVersion && "toolchain default DWARF version must be nonzero");
3725 // If the user specified a default DWARF version, that takes precedence
3726 // over the platform default.
3727 if (DefaultDWARFVersion)
3728 DWARFVersion = DefaultDWARFVersion;
3730 // Override with a user-specified DWARF version
3732 if (auto ExplicitVersion = DwarfVersionNum(GDwarfN->getSpelling()))
3733 DWARFVersion = ExplicitVersion;
3736 // -gline-directives-only supported only for the DWARF debug info.
3737 if (DWARFVersion == 0 && DebugInfoKind == codegenoptions::DebugDirectivesOnly)
3738 DebugInfoKind = codegenoptions::NoDebugInfo;
3740 // We ignore flag -gstrict-dwarf for now.
3741 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
3742 Args.ClaimAllArgs(options::OPT_g_flags_Group);
3744 // Column info is included by default for everything except SCE and
3745 // CodeView. Clang doesn't track end columns, just starting columns, which,
3746 // in theory, is fine for CodeView (and PDB). In practice, however, the
3747 // Microsoft debuggers don't handle missing end columns well, so it's better
3748 // not to include any column info.
3749 if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
3750 (void)checkDebugInfoOption(A, Args, D, TC);
3751 if (!Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
3752 !EmitCodeView && DebuggerTuning != llvm::DebuggerKind::SCE))
3753 CmdArgs.push_back("-gno-column-info");
3755 // FIXME: Move backend command line options to the module.
3756 // If -gline-tables-only or -gline-directives-only is the last option it wins.
3757 if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
3758 if (checkDebugInfoOption(A, Args, D, TC)) {
3759 if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
3760 DebugInfoKind != codegenoptions::DebugDirectivesOnly) {
3761 DebugInfoKind = codegenoptions::DebugInfoConstructor;
3762 CmdArgs.push_back("-dwarf-ext-refs");
3763 CmdArgs.push_back("-fmodule-format=obj");
3767 if (T.isOSBinFormatELF() && !SplitDWARFInlining)
3768 CmdArgs.push_back("-fno-split-dwarf-inlining");
3770 // After we've dealt with all combinations of things that could
3771 // make DebugInfoKind be other than None or DebugLineTablesOnly,
3772 // figure out if we need to "upgrade" it to standalone debug info.
3773 // We parse these two '-f' options whether or not they will be used,
3774 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3775 bool NeedFullDebug = Args.hasFlag(
3776 options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,
3777 DebuggerTuning == llvm::DebuggerKind::LLDB ||
3778 TC.GetDefaultStandaloneDebug());
3779 if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
3780 (void)checkDebugInfoOption(A, Args, D, TC);
3781 if ((DebugInfoKind == codegenoptions::LimitedDebugInfo ||
3782 DebugInfoKind == codegenoptions::DebugInfoConstructor) &&
3784 DebugInfoKind = codegenoptions::FullDebugInfo;
3786 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
3788 // Source embedding is a vendor extension to DWARF v5. By now we have
3789 // checked if a DWARF version was stated explicitly, and have otherwise
3790 // fallen back to the target default, so if this is still not at least 5
3791 // we emit an error.
3792 const Arg *A = Args.getLastArg(options::OPT_gembed_source);
3793 if (DWARFVersion < 5)
3794 D.Diag(diag::err_drv_argument_only_allowed_with)
3795 << A->getAsString(Args) << "-gdwarf-5";
3796 else if (checkDebugInfoOption(A, Args, D, TC))
3797 CmdArgs.push_back("-gembed-source");
3801 CmdArgs.push_back("-gcodeview");
3803 // Emit codeview type hashes if requested.
3804 if (Args.hasFlag(options::OPT_gcodeview_ghash,
3805 options::OPT_gno_codeview_ghash, false)) {
3806 CmdArgs.push_back("-gcodeview-ghash");
3810 // Omit inline line tables if requested.
3811 if (Args.hasFlag(options::OPT_gno_inline_line_tables,
3812 options::OPT_ginline_line_tables, false)) {
3813 CmdArgs.push_back("-gno-inline-line-tables");
3816 // Adjust the debug info kind for the given toolchain.
3817 TC.adjustDebugInfoKind(DebugInfoKind, Args);
3819 // When emitting remarks, we need at least debug lines in the output.
3820 if (willEmitRemarks(Args) &&
3821 DebugInfoKind <= codegenoptions::DebugDirectivesOnly)
3822 DebugInfoKind = codegenoptions::DebugLineTablesOnly;
3824 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3827 // -fdebug-macro turns on macro debug info generation.
3828 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3830 if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
3832 CmdArgs.push_back("-debug-info-macro");
3834 // -ggnu-pubnames turns on gnu style pubnames in the backend.
3835 const auto *PubnamesArg =
3836 Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3837 options::OPT_gpubnames, options::OPT_gno_pubnames);
3838 if (DwarfFission != DwarfFissionKind::None ||
3839 (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
3841 (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
3842 !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
3843 CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
3844 options::OPT_gpubnames)
3846 : "-ggnu-pubnames");
3848 if (Args.hasFlag(options::OPT_fdebug_ranges_base_address,
3849 options::OPT_fno_debug_ranges_base_address, false)) {
3850 CmdArgs.push_back("-fdebug-ranges-base-address");
3853 // -gdwarf-aranges turns on the emission of the aranges section in the
3855 // Always enabled for SCE tuning.
3856 bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
3857 if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
3858 NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
3860 CmdArgs.push_back("-mllvm");
3861 CmdArgs.push_back("-generate-arange-section");
3864 if (Args.hasFlag(options::OPT_fforce_dwarf_frame,
3865 options::OPT_fno_force_dwarf_frame, false))
3866 CmdArgs.push_back("-fforce-dwarf-frame");
3868 if (Args.hasFlag(options::OPT_fdebug_types_section,
3869 options::OPT_fno_debug_types_section, false)) {
3870 if (!T.isOSBinFormatELF()) {
3871 D.Diag(diag::err_drv_unsupported_opt_for_target)
3872 << Args.getLastArg(options::OPT_fdebug_types_section)
3875 } else if (checkDebugInfoOption(
3876 Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
3878 CmdArgs.push_back("-mllvm");
3879 CmdArgs.push_back("-generate-type-units");
3883 // Decide how to render forward declarations of template instantiations.
3884 // SCE wants full descriptions, others just get them in the name.
3885 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3886 CmdArgs.push_back("-debug-forward-template-params");
3888 // Do we need to explicitly import anonymous namespaces into the parent
3890 if (DebuggerTuning == llvm::DebuggerKind::SCE)
3891 CmdArgs.push_back("-dwarf-explicit-import");
3893 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
3896 void Clang::ConstructJob(Compilation &C, const JobAction &JA,
3897 const InputInfo &Output, const InputInfoList &Inputs,
3898 const ArgList &Args, const char *LinkingOutput) const {
3899 const auto &TC = getToolChain();
3900 const llvm::Triple &RawTriple = TC.getTriple();
3901 const llvm::Triple &Triple = TC.getEffectiveTriple();
3902 const std::string &TripleStr = Triple.getTriple();
3905 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3906 const Driver &D = TC.getDriver();
3907 ArgStringList CmdArgs;
3909 // Check number of inputs for sanity. We need at least one input.
3910 assert(Inputs.size() >= 1 && "Must have at least one input.");
3911 // CUDA/HIP compilation may have multiple inputs (source file + results of
3912 // device-side compilations). OpenMP device jobs also take the host IR as a
3913 // second input. Module precompilation accepts a list of header files to
3914 // include as part of the module. All other jobs are expected to have exactly
3916 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3917 bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3918 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3919 bool IsHeaderModulePrecompile = isa<HeaderModulePrecompileJobAction>(JA);
3921 // A header module compilation doesn't have a main input file, so invent a
3922 // fake one as a placeholder.
3923 const char *ModuleName = [&]{
3924 auto *ModuleNameArg = Args.getLastArg(options::OPT_fmodule_name_EQ);
3925 return ModuleNameArg ? ModuleNameArg->getValue() : "";
3927 InputInfo HeaderModuleInput(Inputs[0].getType(), ModuleName, ModuleName);
3929 const InputInfo &Input =
3930 IsHeaderModulePrecompile ? HeaderModuleInput : Inputs[0];
3932 InputInfoList ModuleHeaderInputs;
3933 const InputInfo *CudaDeviceInput = nullptr;
3934 const InputInfo *OpenMPDeviceInput = nullptr;
3935 for (const InputInfo &I : Inputs) {
3937 // This is the primary input.
3938 } else if (IsHeaderModulePrecompile &&
3939 types::getPrecompiledType(I.getType()) == types::TY_PCH) {
3940 types::ID Expected = HeaderModuleInput.getType();
3941 if (I.getType() != Expected) {
3942 D.Diag(diag::err_drv_module_header_wrong_kind)
3943 << I.getFilename() << types::getTypeName(I.getType())
3944 << types::getTypeName(Expected);
3946 ModuleHeaderInputs.push_back(I);
3947 } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
3948 CudaDeviceInput = &I;
3949 } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
3950 OpenMPDeviceInput = &I;
3952 llvm_unreachable("unexpectedly given multiple inputs");
3956 const llvm::Triple *AuxTriple =
3957 (IsCuda || IsHIP) ? TC.getAuxTriple() : nullptr;
3958 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3959 bool IsIAMCU = RawTriple.isOSIAMCU();
3961 // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3962 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3963 // Windows), we need to pass Windows-specific flags to cc1.
3964 if (IsCuda || IsHIP)
3965 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3967 // C++ is not supported for IAMCU.
3968 if (IsIAMCU && types::isCXX(Input.getType()))
3969 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3971 // Invoke ourselves in -cc1 mode.
3973 // FIXME: Implement custom jobs for internal actions.
3974 CmdArgs.push_back("-cc1");
3976 // Add the "effective" target triple.
3977 CmdArgs.push_back("-triple");
3978 CmdArgs.push_back(Args.MakeArgString(TripleStr));
3980 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3981 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3982 Args.ClaimAllArgs(options::OPT_MJ);
3983 } else if (const Arg *GenCDBFragment =
3984 Args.getLastArg(options::OPT_gen_cdb_fragment_path)) {
3985 DumpCompilationDatabaseFragmentToDir(GenCDBFragment->getValue(), C,
3986 TripleStr, Output, Input, Args);
3987 Args.ClaimAllArgs(options::OPT_gen_cdb_fragment_path);
3990 if (IsCuda || IsHIP) {
3991 // We have to pass the triple of the host if compiling for a CUDA/HIP device
3993 std::string NormalizedTriple;
3994 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||
3995 JA.isDeviceOffloading(Action::OFK_HIP))
3996 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
4000 // Host-side compilation.
4002 (IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
4003 : C.getSingleOffloadToolChain<Action::OFK_HIP>())
4007 // We need to figure out which CUDA version we're compiling for, as that
4008 // determines how we load and launch GPU kernels.
4009 auto *CTC = static_cast<const toolchains::CudaToolChain *>(
4010 C.getSingleOffloadToolChain<Action::OFK_Cuda>());
4011 assert(CTC && "Expected valid CUDA Toolchain.");
4012 if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
4013 CmdArgs.push_back(Args.MakeArgString(
4014 Twine("-target-sdk-version=") +
4015 CudaVersionToString(CTC->CudaInstallation.version())));
4018 CmdArgs.push_back("-aux-triple");
4019 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
4022 if (Args.hasFlag(options::OPT_fsycl, options::OPT_fno_sycl, false)) {
4023 CmdArgs.push_back("-fsycl");
4024 CmdArgs.push_back("-fsycl-is-device");
4026 if (Arg *A = Args.getLastArg(options::OPT_sycl_std_EQ)) {
4027 A->render(Args, CmdArgs);
4029 // Ensure the default version in SYCL mode is 1.2.1 (aka 2017)
4030 CmdArgs.push_back("-sycl-std=2017");
4034 if (IsOpenMPDevice) {
4035 // We have to pass the triple of the host if compiling for an OpenMP device.
4036 std::string NormalizedTriple =
4037 C.getSingleOffloadToolChain<Action::OFK_Host>()
4040 CmdArgs.push_back("-aux-triple");
4041 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
4044 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
4045 Triple.getArch() == llvm::Triple::thumb)) {
4046 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
4047 unsigned Version = 0;
4049 Triple.getArchName().substr(Offset).consumeInteger(10, Version);
4050 if (Failure || Version < 7)
4051 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
4055 // Push all default warning arguments that are specific to
4056 // the given target. These come before user provided warning options
4058 TC.addClangWarningOptions(CmdArgs);
4060 // Select the appropriate action.
4061 RewriteKind rewriteKind = RK_None;
4063 // If CollectArgsForIntegratedAssembler() isn't called below, claim the args
4064 // it claims when not running an assembler. Otherwise, clang would emit
4065 // "argument unused" warnings for assembler flags when e.g. adding "-E" to
4066 // flags while debugging something. That'd be somewhat inconvenient, and it's
4067 // also inconsistent with most other flags -- we don't warn on
4068 // -ffunction-sections not being used in -E mode either for example, even
4069 // though it's not really used either.
4070 if (!isa<AssembleJobAction>(JA)) {
4071 // The args claimed here should match the args used in
4072 // CollectArgsForIntegratedAssembler().
4073 if (TC.useIntegratedAs()) {
4074 Args.ClaimAllArgs(options::OPT_mrelax_all);
4075 Args.ClaimAllArgs(options::OPT_mno_relax_all);
4076 Args.ClaimAllArgs(options::OPT_mincremental_linker_compatible);
4077 Args.ClaimAllArgs(options::OPT_mno_incremental_linker_compatible);
4078 switch (C.getDefaultToolChain().getArch()) {
4079 case llvm::Triple::arm:
4080 case llvm::Triple::armeb:
4081 case llvm::Triple::thumb:
4082 case llvm::Triple::thumbeb:
4083 Args.ClaimAllArgs(options::OPT_mimplicit_it_EQ);
4089 Args.ClaimAllArgs(options::OPT_Wa_COMMA);
4090 Args.ClaimAllArgs(options::OPT_Xassembler);
4093 if (isa<AnalyzeJobAction>(JA)) {
4094 assert(JA.getType() == types::TY_Plist && "Invalid output type.");
4095 CmdArgs.push_back("-analyze");
4096 } else if (isa<MigrateJobAction>(JA)) {
4097 CmdArgs.push_back("-migrate");
4098 } else if (isa<PreprocessJobAction>(JA)) {
4099 if (Output.getType() == types::TY_Dependencies)
4100 CmdArgs.push_back("-Eonly");
4102 CmdArgs.push_back("-E");
4103 if (Args.hasArg(options::OPT_rewrite_objc) &&
4104 !Args.hasArg(options::OPT_g_Group))
4105 CmdArgs.push_back("-P");
4107 } else if (isa<AssembleJobAction>(JA)) {
4108 CmdArgs.push_back("-emit-obj");
4110 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
4112 // Also ignore explicit -force_cpusubtype_ALL option.
4113 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
4114 } else if (isa<PrecompileJobAction>(JA)) {
4115 if (JA.getType() == types::TY_Nothing)
4116 CmdArgs.push_back("-fsyntax-only");
4117 else if (JA.getType() == types::TY_ModuleFile)
4118 CmdArgs.push_back(IsHeaderModulePrecompile
4119 ? "-emit-header-module"
4120 : "-emit-module-interface");
4122 CmdArgs.push_back("-emit-pch");
4123 } else if (isa<VerifyPCHJobAction>(JA)) {
4124 CmdArgs.push_back("-verify-pch");
4126 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
4127 "Invalid action for clang tool.");
4128 if (JA.getType() == types::TY_Nothing) {
4129 CmdArgs.push_back("-fsyntax-only");
4130 } else if (JA.getType() == types::TY_LLVM_IR ||
4131 JA.getType() == types::TY_LTO_IR) {
4132 CmdArgs.push_back("-emit-llvm");
4133 } else if (JA.getType() == types::TY_LLVM_BC ||
4134 JA.getType() == types::TY_LTO_BC) {
4135 CmdArgs.push_back("-emit-llvm-bc");
4136 } else if (JA.getType() == types::TY_IFS ||
4137 JA.getType() == types::TY_IFS_CPP) {
4139 Args.hasArg(options::OPT_interface_stub_version_EQ)
4140 ? Args.getLastArgValue(options::OPT_interface_stub_version_EQ)
4141 : "experimental-ifs-v2";
4142 CmdArgs.push_back("-emit-interface-stubs");
4144 Args.MakeArgString(Twine("-interface-stub-version=") + ArgStr.str()));
4145 } else if (JA.getType() == types::TY_PP_Asm) {
4146 CmdArgs.push_back("-S");
4147 } else if (JA.getType() == types::TY_AST) {
4148 CmdArgs.push_back("-emit-pch");
4149 } else if (JA.getType() == types::TY_ModuleFile) {
4150 CmdArgs.push_back("-module-file-info");
4151 } else if (JA.getType() == types::TY_RewrittenObjC) {
4152 CmdArgs.push_back("-rewrite-objc");
4153 rewriteKind = RK_NonFragile;
4154 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
4155 CmdArgs.push_back("-rewrite-objc");
4156 rewriteKind = RK_Fragile;
4158 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
4161 // Preserve use-list order by default when emitting bitcode, so that
4162 // loading the bitcode up in 'opt' or 'llc' and running passes gives the
4163 // same result as running passes here. For LTO, we don't need to preserve
4164 // the use-list order, since serialization to bitcode is part of the flow.
4165 if (JA.getType() == types::TY_LLVM_BC)
4166 CmdArgs.push_back("-emit-llvm-uselists");
4168 // Device-side jobs do not support LTO.
4169 bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
4170 JA.isDeviceOffloading(Action::OFK_Host));
4172 if (D.isUsingLTO() && !isDeviceOffloadAction) {
4173 Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
4174 CmdArgs.push_back("-flto-unit");
4178 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
4179 if (!types::isLLVMIR(Input.getType()))
4180 D.Diag(diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);
4181 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
4184 if (Args.getLastArg(options::OPT_fthin_link_bitcode_EQ))
4185 Args.AddLastArg(CmdArgs, options::OPT_fthin_link_bitcode_EQ);
4187 if (Args.getLastArg(options::OPT_save_temps_EQ))
4188 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
4190 // Embed-bitcode option.
4191 // Only white-listed flags below are allowed to be embedded.
4192 if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
4193 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
4194 // Add flags implied by -fembed-bitcode.
4195 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
4196 // Disable all llvm IR level optimizations.
4197 CmdArgs.push_back("-disable-llvm-passes");
4199 // Render target options.
4200 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
4202 // reject options that shouldn't be supported in bitcode
4203 // also reject kernel/kext
4204 static const constexpr unsigned kBitcodeOptionBlacklist[] = {
4205 options::OPT_mkernel,
4206 options::OPT_fapple_kext,
4207 options::OPT_ffunction_sections,
4208 options::OPT_fno_function_sections,
4209 options::OPT_fdata_sections,
4210 options::OPT_fno_data_sections,
4211 options::OPT_fbasic_block_sections_EQ,
4212 options::OPT_funique_internal_linkage_names,
4213 options::OPT_fno_unique_internal_linkage_names,
4214 options::OPT_funique_section_names,
4215 options::OPT_fno_unique_section_names,
4216 options::OPT_funique_basic_block_section_names,
4217 options::OPT_fno_unique_basic_block_section_names,
4218 options::OPT_mrestrict_it,
4219 options::OPT_mno_restrict_it,
4220 options::OPT_mstackrealign,
4221 options::OPT_mno_stackrealign,
4222 options::OPT_mstack_alignment,
4223 options::OPT_mcmodel_EQ,
4224 options::OPT_mlong_calls,
4225 options::OPT_mno_long_calls,
4226 options::OPT_ggnu_pubnames,
4227 options::OPT_gdwarf_aranges,
4228 options::OPT_fdebug_types_section,
4229 options::OPT_fno_debug_types_section,
4230 options::OPT_fdwarf_directory_asm,
4231 options::OPT_fno_dwarf_directory_asm,
4232 options::OPT_mrelax_all,
4233 options::OPT_mno_relax_all,
4234 options::OPT_ftrap_function_EQ,
4235 options::OPT_ffixed_r9,
4236 options::OPT_mfix_cortex_a53_835769,
4237 options::OPT_mno_fix_cortex_a53_835769,
4238 options::OPT_ffixed_x18,
4239 options::OPT_mglobal_merge,
4240 options::OPT_mno_global_merge,
4241 options::OPT_mred_zone,
4242 options::OPT_mno_red_zone,
4243 options::OPT_Wa_COMMA,
4244 options::OPT_Xassembler,
4247 for (const auto &A : Args)
4248 if (llvm::find(kBitcodeOptionBlacklist, A->getOption().getID()) !=
4249 std::end(kBitcodeOptionBlacklist))
4250 D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
4252 // Render the CodeGen options that need to be passed.
4253 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
4254 options::OPT_fno_optimize_sibling_calls))
4255 CmdArgs.push_back("-mdisable-tail-calls");
4257 RenderFloatingPointOptions(TC, D, isOptimizationLevelFast(Args), Args,
4260 // Render ABI arguments
4261 switch (TC.getArch()) {
4263 case llvm::Triple::arm:
4264 case llvm::Triple::armeb:
4265 case llvm::Triple::thumbeb:
4266 RenderARMABI(Triple, Args, CmdArgs);
4268 case llvm::Triple::aarch64:
4269 case llvm::Triple::aarch64_32:
4270 case llvm::Triple::aarch64_be:
4271 RenderAArch64ABI(Triple, Args, CmdArgs);
4275 // Optimization level for CodeGen.
4276 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4277 if (A->getOption().matches(options::OPT_O4)) {
4278 CmdArgs.push_back("-O3");
4279 D.Diag(diag::warn_O4_is_O3);
4281 A->render(Args, CmdArgs);
4285 // Input/Output file.
4286 if (Output.getType() == types::TY_Dependencies) {
4287 // Handled with other dependency code.
4288 } else if (Output.isFilename()) {
4289 CmdArgs.push_back("-o");
4290 CmdArgs.push_back(Output.getFilename());
4292 assert(Output.isNothing() && "Input output.");
4295 for (const auto &II : Inputs) {
4296 addDashXForInput(Args, II, CmdArgs);
4297 if (II.isFilename())
4298 CmdArgs.push_back(II.getFilename());
4300 II.getInputArg().renderAsInput(Args, CmdArgs);
4304 std::make_unique<Command>(JA, *this, ResponseFileSupport::AtFileUTF8(),
4305 D.getClangProgramPath(), CmdArgs, Inputs));
4309 if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO())
4310 CmdArgs.push_back("-fembed-bitcode=marker");
4312 // We normally speed up the clang process a bit by skipping destructors at
4313 // exit, but when we're generating diagnostics we can rely on some of the
4315 if (!C.isForDiagnostics())
4316 CmdArgs.push_back("-disable-free");
4319 const bool IsAssertBuild = false;
4321 const bool IsAssertBuild = true;
4324 // Disable the verification pass in -asserts builds.
4326 CmdArgs.push_back("-disable-llvm-verifier");
4328 // Discard value names in assert builds unless otherwise specified.
4329 if (Args.hasFlag(options::OPT_fdiscard_value_names,
4330 options::OPT_fno_discard_value_names, !IsAssertBuild)) {
4331 if (Args.hasArg(options::OPT_fdiscard_value_names) &&
4332 (std::any_of(Inputs.begin(), Inputs.end(),
4333 [](const clang::driver::InputInfo &II) {
4334 return types::isLLVMIR(II.getType());
4336 D.Diag(diag::warn_ignoring_fdiscard_for_bitcode);
4338 CmdArgs.push_back("-discard-value-names");
4341 // Set the main file name, so that debug info works even with
4343 CmdArgs.push_back("-main-file-name");
4344 CmdArgs.push_back(getBaseInputName(Args, Input));
4346 // Some flags which affect the language (via preprocessor
4348 if (Args.hasArg(options::OPT_static))
4349 CmdArgs.push_back("-static-define");
4351 if (Args.hasArg(options::OPT_municode))
4352 CmdArgs.push_back("-DUNICODE");
4354 if (isa<AnalyzeJobAction>(JA))
4355 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
4357 if (isa<AnalyzeJobAction>(JA) ||
4358 (isa<PreprocessJobAction>(JA) && Args.hasArg(options::OPT__analyze)))
4359 CmdArgs.push_back("-setup-static-analyzer");
4361 // Enable compatilibily mode to avoid analyzer-config related errors.
4362 // Since we can't access frontend flags through hasArg, let's manually iterate
4364 bool FoundAnalyzerConfig = false;
4365 for (auto Arg : Args.filtered(options::OPT_Xclang))
4366 if (StringRef(Arg->getValue()) == "-analyzer-config") {
4367 FoundAnalyzerConfig = true;
4370 if (!FoundAnalyzerConfig)
4371 for (auto Arg : Args.filtered(options::OPT_Xanalyzer))
4372 if (StringRef(Arg->getValue()) == "-analyzer-config") {
4373 FoundAnalyzerConfig = true;
4376 if (FoundAnalyzerConfig)
4377 CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
4379 CheckCodeGenerationOptions(D, Args);
4381 unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
4382 assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
4383 if (FunctionAlignment) {
4384 CmdArgs.push_back("-function-alignment");
4385 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
4388 llvm::Reloc::Model RelocationModel;
4391 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
4393 bool IsROPI = RelocationModel == llvm::Reloc::ROPI ||
4394 RelocationModel == llvm::Reloc::ROPI_RWPI;
4395 bool IsRWPI = RelocationModel == llvm::Reloc::RWPI ||
4396 RelocationModel == llvm::Reloc::ROPI_RWPI;
4398 if (Args.hasArg(options::OPT_mcmse) &&
4399 !Args.hasArg(options::OPT_fallow_unsupported)) {
4401 D.Diag(diag::err_cmse_pi_are_incompatible) << IsROPI;
4403 D.Diag(diag::err_cmse_pi_are_incompatible) << !IsRWPI;
4406 if (IsROPI && types::isCXX(Input.getType()) &&
4407 !Args.hasArg(options::OPT_fallow_unsupported))
4408 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
4410 const char *RMName = RelocationModelName(RelocationModel);
4412 CmdArgs.push_back("-mrelocation-model");
4413 CmdArgs.push_back(RMName);
4416 CmdArgs.push_back("-pic-level");
4417 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
4419 CmdArgs.push_back("-pic-is-pie");
4422 if (RelocationModel == llvm::Reloc::ROPI ||
4423 RelocationModel == llvm::Reloc::ROPI_RWPI)
4424 CmdArgs.push_back("-fropi");
4425 if (RelocationModel == llvm::Reloc::RWPI ||
4426 RelocationModel == llvm::Reloc::ROPI_RWPI)
4427 CmdArgs.push_back("-frwpi");
4429 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
4430 CmdArgs.push_back("-meabi");
4431 CmdArgs.push_back(A->getValue());
4434 // The default is -fno-semantic-interposition. We render it just because we
4435 // require explicit -fno-semantic-interposition to infer dso_local.
4436 if (Arg *A = Args.getLastArg(options::OPT_fsemantic_interposition,
4437 options::OPT_fno_semantic_interposition))
4438 if (RelocationModel != llvm::Reloc::Static && !IsPIE)
4439 A->render(Args, CmdArgs);
4443 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
4444 if (!TC.isThreadModelSupported(A->getValue()))
4445 D.Diag(diag::err_drv_invalid_thread_model_for_target)
4446 << A->getValue() << A->getAsString(Args);
4447 Model = A->getValue();
4449 Model = TC.getThreadModel();
4450 if (Model != "posix") {
4451 CmdArgs.push_back("-mthread-model");
4452 CmdArgs.push_back(Args.MakeArgString(Model));
4456 Args.AddLastArg(CmdArgs, options::OPT_fveclib);
4458 if (Args.hasFlag(options::OPT_fmerge_all_constants,
4459 options::OPT_fno_merge_all_constants, false))
4460 CmdArgs.push_back("-fmerge-all-constants");
4462 if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
4463 options::OPT_fdelete_null_pointer_checks, false))
4464 CmdArgs.push_back("-fno-delete-null-pointer-checks");
4466 // LLVM Code Generator Options.
4468 if (Args.hasArg(options::OPT_frewrite_map_file) ||
4469 Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
4470 for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
4471 options::OPT_frewrite_map_file_EQ)) {
4472 StringRef Map = A->getValue();
4473 if (!llvm::sys::fs::exists(Map)) {
4474 D.Diag(diag::err_drv_no_such_file) << Map;
4476 CmdArgs.push_back("-frewrite-map-file");
4477 CmdArgs.push_back(A->getValue());
4483 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
4484 StringRef v = A->getValue();
4485 CmdArgs.push_back("-mllvm");
4486 CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
4490 if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
4492 CmdArgs.push_back("-fno-jump-tables");
4494 if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
4495 options::OPT_fno_profile_sample_accurate, false))
4496 CmdArgs.push_back("-fprofile-sample-accurate");
4498 if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
4499 options::OPT_fno_preserve_as_comments, true))
4500 CmdArgs.push_back("-fno-preserve-as-comments");
4502 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
4503 CmdArgs.push_back("-mregparm");
4504 CmdArgs.push_back(A->getValue());
4507 if (Arg *A = Args.getLastArg(options::OPT_maix_struct_return,
4508 options::OPT_msvr4_struct_return)) {
4509 if (TC.getArch() != llvm::Triple::ppc) {
4510 D.Diag(diag::err_drv_unsupported_opt_for_target)
4511 << A->getSpelling() << RawTriple.str();
4512 } else if (A->getOption().matches(options::OPT_maix_struct_return)) {
4513 CmdArgs.push_back("-maix-struct-return");
4515 assert(A->getOption().matches(options::OPT_msvr4_struct_return));
4516 CmdArgs.push_back("-msvr4-struct-return");
4520 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
4521 options::OPT_freg_struct_return)) {
4522 if (TC.getArch() != llvm::Triple::x86) {
4523 D.Diag(diag::err_drv_unsupported_opt_for_target)
4524 << A->getSpelling() << RawTriple.str();
4525 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
4526 CmdArgs.push_back("-fpcc-struct-return");
4528 assert(A->getOption().matches(options::OPT_freg_struct_return));
4529 CmdArgs.push_back("-freg-struct-return");
4533 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
4534 CmdArgs.push_back("-fdefault-calling-conv=stdcall");
4536 if (Args.hasArg(options::OPT_fenable_matrix)) {
4537 // enable-matrix is needed by both the LangOpts and by LLVM.
4538 CmdArgs.push_back("-fenable-matrix");
4539 CmdArgs.push_back("-mllvm");
4540 CmdArgs.push_back("-enable-matrix");
4543 CodeGenOptions::FramePointerKind FPKeepKind =
4544 getFramePointerKind(Args, RawTriple);
4545 const char *FPKeepKindStr = nullptr;
4546 switch (FPKeepKind) {
4547 case CodeGenOptions::FramePointerKind::None:
4548 FPKeepKindStr = "-mframe-pointer=none";
4550 case CodeGenOptions::FramePointerKind::NonLeaf:
4551 FPKeepKindStr = "-mframe-pointer=non-leaf";
4553 case CodeGenOptions::FramePointerKind::All:
4554 FPKeepKindStr = "-mframe-pointer=all";
4557 assert(FPKeepKindStr && "unknown FramePointerKind");
4558 CmdArgs.push_back(FPKeepKindStr);
4560 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
4561 options::OPT_fno_zero_initialized_in_bss, true))
4562 CmdArgs.push_back("-fno-zero-initialized-in-bss");
4564 bool OFastEnabled = isOptimizationLevelFast(Args);
4565 // If -Ofast is the optimization level, then -fstrict-aliasing should be
4566 // enabled. This alias option is being used to simplify the hasFlag logic.
4567 OptSpecifier StrictAliasingAliasOption =
4568 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
4569 // We turn strict aliasing off by default if we're in CL mode, since MSVC
4570 // doesn't do any TBAA.
4571 bool TBAAOnByDefault = !D.IsCLMode();
4572 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
4573 options::OPT_fno_strict_aliasing, TBAAOnByDefault))
4574 CmdArgs.push_back("-relaxed-aliasing");
4575 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
4576 options::OPT_fno_struct_path_tbaa))
4577 CmdArgs.push_back("-no-struct-path-tbaa");
4578 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
4580 CmdArgs.push_back("-fstrict-enums");
4581 if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
4583 CmdArgs.push_back("-fno-strict-return");
4584 if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
4585 options::OPT_fno_allow_editor_placeholders, false))
4586 CmdArgs.push_back("-fallow-editor-placeholders");
4587 if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
4588 options::OPT_fno_strict_vtable_pointers,
4590 CmdArgs.push_back("-fstrict-vtable-pointers");
4591 if (Args.hasFlag(options::OPT_fforce_emit_vtables,
4592 options::OPT_fno_force_emit_vtables,
4594 CmdArgs.push_back("-fforce-emit-vtables");
4595 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
4596 options::OPT_fno_optimize_sibling_calls))
4597 CmdArgs.push_back("-mdisable-tail-calls");
4598 if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
4599 options::OPT_fescaping_block_tail_calls, false))
4600 CmdArgs.push_back("-fno-escaping-block-tail-calls");
4602 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
4603 options::OPT_fno_fine_grained_bitfield_accesses);
4605 // Handle segmented stacks.
4606 if (Args.hasArg(options::OPT_fsplit_stack))
4607 CmdArgs.push_back("-split-stacks");
4609 RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs, JA);
4611 if (Arg *A = Args.getLastArg(options::OPT_mdouble_EQ)) {
4612 if (TC.getArch() == llvm::Triple::avr)
4613 A->render(Args, CmdArgs);
4615 D.Diag(diag::err_drv_unsupported_opt_for_target)
4616 << A->getAsString(Args) << TripleStr;
4619 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) {
4620 if (TC.getTriple().isX86())
4621 A->render(Args, CmdArgs);
4622 else if ((TC.getArch() == llvm::Triple::ppc || TC.getTriple().isPPC64()) &&
4623 (A->getOption().getID() != options::OPT_mlong_double_80))
4624 A->render(Args, CmdArgs);
4626 D.Diag(diag::err_drv_unsupported_opt_for_target)
4627 << A->getAsString(Args) << TripleStr;
4630 // Decide whether to use verbose asm. Verbose assembly is the default on
4631 // toolchains which have the integrated assembler on by default.
4632 bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
4633 if (!Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
4634 IsIntegratedAssemblerDefault))
4635 CmdArgs.push_back("-fno-verbose-asm");
4637 if (!TC.useIntegratedAs())
4638 CmdArgs.push_back("-no-integrated-as");
4640 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
4641 CmdArgs.push_back("-mdebug-pass");
4642 CmdArgs.push_back("Structure");
4644 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
4645 CmdArgs.push_back("-mdebug-pass");
4646 CmdArgs.push_back("Arguments");
4649 // Enable -mconstructor-aliases except on darwin, where we have to work around
4650 // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
4651 // aliases aren't supported. Similarly, aliases aren't yet supported for AIX.
4652 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX() && !RawTriple.isOSAIX())
4653 CmdArgs.push_back("-mconstructor-aliases");
4655 // Darwin's kernel doesn't support guard variables; just die if we
4657 if (KernelOrKext && RawTriple.isOSDarwin())
4658 CmdArgs.push_back("-fforbid-guard-variables");
4660 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
4661 Triple.isWindowsGNUEnvironment())) {
4662 CmdArgs.push_back("-mms-bitfields");
4665 if (Args.hasFlag(options::OPT_mpie_copy_relocations,
4666 options::OPT_mno_pie_copy_relocations,
4668 CmdArgs.push_back("-mpie-copy-relocations");
4671 if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
4672 CmdArgs.push_back("-fno-plt");
4675 // -fhosted is default.
4676 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
4677 // use Freestanding.
4679 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
4682 CmdArgs.push_back("-ffreestanding");
4684 // This is a coarse approximation of what llvm-gcc actually does, both
4685 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
4686 // complicated ways.
4687 bool AsynchronousUnwindTables =
4688 Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
4689 options::OPT_fno_asynchronous_unwind_tables,
4690 (TC.IsUnwindTablesDefault(Args) ||
4691 TC.getSanitizerArgs().needsUnwindTables()) &&
4693 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
4694 AsynchronousUnwindTables))
4695 CmdArgs.push_back("-munwind-tables");
4697 // Prepare `-aux-target-cpu` and `-aux-target-feature` unless
4698 // `--gpu-use-aux-triple-only` is specified.
4699 if (!Args.getLastArg(options::OPT_gpu_use_aux_triple_only) &&
4700 ((IsCuda && JA.isDeviceOffloading(Action::OFK_Cuda)) ||
4701 (IsHIP && JA.isDeviceOffloading(Action::OFK_HIP)))) {
4702 const ArgList &HostArgs =
4703 C.getArgsForToolChain(nullptr, StringRef(), Action::OFK_None);
4704 std::string HostCPU =
4705 getCPUName(HostArgs, *TC.getAuxTriple(), /*FromAs*/ false);
4706 if (!HostCPU.empty()) {
4707 CmdArgs.push_back("-aux-target-cpu");
4708 CmdArgs.push_back(Args.MakeArgString(HostCPU));
4710 getTargetFeatures(D, *TC.getAuxTriple(), HostArgs, CmdArgs,
4711 /*ForAS*/ false, /*IsAux*/ true);
4714 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
4716 // FIXME: Handle -mtune=.
4717 (void)Args.hasArg(options::OPT_mtune_EQ);
4719 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
4720 StringRef CM = A->getValue();
4721 if (CM == "small" || CM == "kernel" || CM == "medium" || CM == "large" ||
4723 A->render(Args, CmdArgs);
4725 D.Diag(diag::err_drv_invalid_argument_to_option)
4726 << CM << A->getOption().getName();
4729 if (Arg *A = Args.getLastArg(options::OPT_mtls_size_EQ)) {
4730 StringRef Value = A->getValue();
4731 unsigned TLSSize = 0;
4732 Value.getAsInteger(10, TLSSize);
4733 if (!Triple.isAArch64() || !Triple.isOSBinFormatELF())
4734 D.Diag(diag::err_drv_unsupported_opt_for_target)
4735 << A->getOption().getName() << TripleStr;
4736 if (TLSSize != 12 && TLSSize != 24 && TLSSize != 32 && TLSSize != 48)
4737 D.Diag(diag::err_drv_invalid_int_value)
4738 << A->getOption().getName() << Value;
4739 Args.AddLastArg(CmdArgs, options::OPT_mtls_size_EQ);
4742 // Add the target cpu
4743 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
4745 CmdArgs.push_back("-target-cpu");
4746 CmdArgs.push_back(Args.MakeArgString(CPU));
4749 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
4751 // These two are potentially updated by AddClangCLArgs.
4752 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
4753 bool EmitCodeView = false;
4755 // Add clang-cl arguments.
4756 types::ID InputType = Input.getType();
4758 AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
4760 DwarfFissionKind DwarfFission;
4761 RenderDebugOptions(TC, D, RawTriple, Args, EmitCodeView, CmdArgs,
4762 DebugInfoKind, DwarfFission);
4764 // Add the split debug info name to the command lines here so we
4765 // can propagate it to the backend.
4766 bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
4767 TC.getTriple().isOSBinFormatELF() &&
4768 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4769 isa<BackendJobAction>(JA));
4771 const char *SplitDWARFOut = SplitDebugName(Args, Input, Output);
4772 CmdArgs.push_back("-split-dwarf-file");
4773 CmdArgs.push_back(SplitDWARFOut);
4774 if (DwarfFission == DwarfFissionKind::Split) {
4775 CmdArgs.push_back("-split-dwarf-output");
4776 CmdArgs.push_back(SplitDWARFOut);
4780 // Pass the linker version in use.
4781 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
4782 CmdArgs.push_back("-target-linker-version");
4783 CmdArgs.push_back(A->getValue());
4786 // Explicitly error on some things we know we don't support and can't just
4788 if (!Args.hasArg(options::OPT_fallow_unsupported)) {
4790 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
4791 TC.getArch() == llvm::Triple::x86) {
4792 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
4793 (Unsupported = Args.getLastArg(options::OPT_mkernel)))
4794 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
4795 << Unsupported->getOption().getName();
4797 // The faltivec option has been superseded by the maltivec option.
4798 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
4799 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4800 << Unsupported->getOption().getName()
4801 << "please use -maltivec and include altivec.h explicitly";
4802 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
4803 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4804 << Unsupported->getOption().getName() << "please use -mno-altivec";
4807 Args.AddAllArgs(CmdArgs, options::OPT_v);
4809 if (Args.getLastArg(options::OPT_H)) {
4810 CmdArgs.push_back("-H");
4811 CmdArgs.push_back("-sys-header-deps");
4814 if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
4815 CmdArgs.push_back("-header-include-file");
4816 CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
4818 CmdArgs.push_back("-sys-header-deps");
4820 Args.AddLastArg(CmdArgs, options::OPT_P);
4821 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
4823 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
4824 CmdArgs.push_back("-diagnostic-log-file");
4825 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
4829 // Give the gen diagnostics more chances to succeed, by avoiding intentional
4831 if (D.CCGenDiagnostics)
4832 CmdArgs.push_back("-disable-pragma-debug-crash");
4834 bool UseSeparateSections = isUseSeparateSections(Triple);
4836 if (Args.hasFlag(options::OPT_ffunction_sections,
4837 options::OPT_fno_function_sections, UseSeparateSections)) {
4838 CmdArgs.push_back("-ffunction-sections");
4841 if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_sections_EQ)) {
4842 StringRef Val = A->getValue();
4843 if (Val != "all" && Val != "labels" && Val != "none" &&
4844 !(Val.startswith("list=") && llvm::sys::fs::exists(Val.substr(5))))
4845 D.Diag(diag::err_drv_invalid_value)
4846 << A->getAsString(Args) << A->getValue();
4848 A->render(Args, CmdArgs);
4851 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
4852 UseSeparateSections)) {
4853 CmdArgs.push_back("-fdata-sections");
4856 if (!Args.hasFlag(options::OPT_funique_section_names,
4857 options::OPT_fno_unique_section_names, true))
4858 CmdArgs.push_back("-fno-unique-section-names");
4860 if (Args.hasFlag(options::OPT_funique_internal_linkage_names,
4861 options::OPT_fno_unique_internal_linkage_names, false))
4862 CmdArgs.push_back("-funique-internal-linkage-names");
4864 if (Args.hasFlag(options::OPT_funique_basic_block_section_names,
4865 options::OPT_fno_unique_basic_block_section_names, false))
4866 CmdArgs.push_back("-funique-basic-block-section-names");
4868 Args.AddLastArg(CmdArgs, options::OPT_finstrument_functions,
4869 options::OPT_finstrument_functions_after_inlining,
4870 options::OPT_finstrument_function_entry_bare);
4872 // NVPTX/AMDGCN doesn't support PGO or coverage. There's no runtime support
4873 // for sampling, overhead of call arc collection is way too high and there's
4874 // no way to collect the output.
4875 if (!Triple.isNVPTX() && !Triple.isAMDGCN())
4876 addPGOAndCoverageFlags(TC, C, D, Output, Args, CmdArgs);
4878 Args.AddLastArg(CmdArgs, options::OPT_fclang_abi_compat_EQ);
4880 // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
4881 if (RawTriple.isPS4CPU() &&
4882 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
4883 PS4cpu::addProfileRTArgs(TC, Args, CmdArgs);
4884 PS4cpu::addSanitizerArgs(TC, CmdArgs);
4887 // Pass options for controlling the default header search paths.
4888 if (Args.hasArg(options::OPT_nostdinc)) {
4889 CmdArgs.push_back("-nostdsysteminc");
4890 CmdArgs.push_back("-nobuiltininc");
4892 if (Args.hasArg(options::OPT_nostdlibinc))
4893 CmdArgs.push_back("-nostdsysteminc");
4894 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
4895 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
4898 // Pass the path to compiler resource files.
4899 CmdArgs.push_back("-resource-dir");
4900 CmdArgs.push_back(D.ResourceDir.c_str());
4902 Args.AddLastArg(CmdArgs, options::OPT_working_directory);
4904 RenderARCMigrateToolOptions(D, Args, CmdArgs);
4906 // Add preprocessing options like -I, -D, etc. if we are using the
4909 // FIXME: Support -fpreprocessed
4910 if (types::getPreprocessedType(InputType) != types::TY_INVALID)
4911 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
4913 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
4914 // that "The compiler can only warn and ignore the option if not recognized".
4915 // When building with ccache, it will pass -D options to clang even on
4916 // preprocessed inputs and configure concludes that -fPIC is not supported.
4917 Args.ClaimAllArgs(options::OPT_D);
4919 // Manually translate -O4 to -O3; let clang reject others.
4920 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4921 if (A->getOption().matches(options::OPT_O4)) {
4922 CmdArgs.push_back("-O3");
4923 D.Diag(diag::warn_O4_is_O3);
4925 A->render(Args, CmdArgs);
4929 // Warn about ignored options to clang.
4931 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
4932 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
4937 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
4938 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
4942 claimNoWarnArgs(Args);
4944 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
4946 Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
4947 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
4948 CmdArgs.push_back("-pedantic");
4949 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
4950 Args.AddLastArg(CmdArgs, options::OPT_w);
4952 // Fixed point flags
4953 if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
4955 Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
4957 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
4958 // (-ansi is equivalent to -std=c89 or -std=c++98).
4960 // If a std is supplied, only add -trigraphs if it follows the
4962 bool ImplyVCPPCXXVer = false;
4963 const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
4965 if (Std->getOption().matches(options::OPT_ansi))
4966 if (types::isCXX(InputType))
4967 CmdArgs.push_back("-std=c++98");
4969 CmdArgs.push_back("-std=c89");
4971 Std->render(Args, CmdArgs);
4973 // If -f(no-)trigraphs appears after the language standard flag, honor it.
4974 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
4975 options::OPT_ftrigraphs,
4976 options::OPT_fno_trigraphs))
4978 A->render(Args, CmdArgs);
4980 // Honor -std-default.
4982 // FIXME: Clang doesn't correctly handle -std= when the input language
4983 // doesn't match. For the time being just ignore this for C++ inputs;
4984 // eventually we want to do all the standard defaulting here instead of
4985 // splitting it between the driver and clang -cc1.
4986 if (!types::isCXX(InputType))
4987 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
4989 else if (IsWindowsMSVC)
4990 ImplyVCPPCXXVer = true;
4992 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
4993 options::OPT_fno_trigraphs);
4995 // HIP headers has minimum C++ standard requirements. Therefore set the
4996 // default language standard.
4998 CmdArgs.push_back(IsWindowsMSVC ? "-std=c++14" : "-std=c++11");
5001 // GCC's behavior for -Wwrite-strings is a bit strange:
5002 // * In C, this "warning flag" changes the types of string literals from
5003 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
5004 // for the discarded qualifier.
5005 // * In C++, this is just a normal warning flag.
5007 // Implementing this warning correctly in C is hard, so we follow GCC's
5008 // behavior for now. FIXME: Directly diagnose uses of a string literal as
5009 // a non-const char* in C, rather than using this crude hack.
5010 if (!types::isCXX(InputType)) {
5011 // FIXME: This should behave just like a warning flag, and thus should also
5012 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
5014 Args.getLastArg(options::OPT_Wwrite_strings,
5015 options::OPT_Wno_write_strings, options::OPT_w);
5017 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
5018 CmdArgs.push_back("-fconst-strings");
5021 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
5022 // during C++ compilation, which it is by default. GCC keeps this define even
5023 // in the presence of '-w', match this behavior bug-for-bug.
5024 if (types::isCXX(InputType) &&
5025 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
5027 CmdArgs.push_back("-fdeprecated-macro");
5030 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
5031 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
5032 if (Asm->getOption().matches(options::OPT_fasm))
5033 CmdArgs.push_back("-fgnu-keywords");
5035 CmdArgs.push_back("-fno-gnu-keywords");
5038 if (ShouldDisableDwarfDirectory(Args, TC))
5039 CmdArgs.push_back("-fno-dwarf-directory-asm");
5041 if (!ShouldEnableAutolink(Args, TC, JA))
5042 CmdArgs.push_back("-fno-autolink");
5044 // Add in -fdebug-compilation-dir if necessary.
5045 addDebugCompDirArg(Args, CmdArgs, D.getVFS());
5047 addDebugPrefixMapArg(D, Args, CmdArgs);
5049 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
5050 options::OPT_ftemplate_depth_EQ)) {
5051 CmdArgs.push_back("-ftemplate-depth");
5052 CmdArgs.push_back(A->getValue());
5055 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
5056 CmdArgs.push_back("-foperator-arrow-depth");
5057 CmdArgs.push_back(A->getValue());
5060 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
5061 CmdArgs.push_back("-fconstexpr-depth");
5062 CmdArgs.push_back(A->getValue());
5065 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
5066 CmdArgs.push_back("-fconstexpr-steps");
5067 CmdArgs.push_back(A->getValue());
5070 if (Args.hasArg(options::OPT_fexperimental_new_constant_interpreter))
5071 CmdArgs.push_back("-fexperimental-new-constant-interpreter");
5073 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
5074 CmdArgs.push_back("-fbracket-depth");
5075 CmdArgs.push_back(A->getValue());
5078 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
5079 options::OPT_Wlarge_by_value_copy_def)) {
5080 if (A->getNumValues()) {
5081 StringRef bytes = A->getValue();
5082 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
5084 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
5087 if (Args.hasArg(options::OPT_relocatable_pch))
5088 CmdArgs.push_back("-relocatable-pch");
5090 if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
5091 static const char *kCFABIs[] = {
5092 "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
5095 if (find(kCFABIs, StringRef(A->getValue())) == std::end(kCFABIs))
5096 D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
5098 A->render(Args, CmdArgs);
5101 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
5102 CmdArgs.push_back("-fconstant-string-class");
5103 CmdArgs.push_back(A->getValue());
5106 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
5107 CmdArgs.push_back("-ftabstop");
5108 CmdArgs.push_back(A->getValue());
5111 if (Args.hasFlag(options::OPT_fstack_size_section,
5112 options::OPT_fno_stack_size_section, RawTriple.isPS4()))
5113 CmdArgs.push_back("-fstack-size-section");
5115 CmdArgs.push_back("-ferror-limit");
5116 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
5117 CmdArgs.push_back(A->getValue());
5119 CmdArgs.push_back("19");
5121 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
5122 CmdArgs.push_back("-fmacro-backtrace-limit");
5123 CmdArgs.push_back(A->getValue());
5126 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
5127 CmdArgs.push_back("-ftemplate-backtrace-limit");
5128 CmdArgs.push_back(A->getValue());
5131 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
5132 CmdArgs.push_back("-fconstexpr-backtrace-limit");
5133 CmdArgs.push_back(A->getValue());
5136 if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
5137 CmdArgs.push_back("-fspell-checking-limit");
5138 CmdArgs.push_back(A->getValue());
5141 // Pass -fmessage-length=.
5142 unsigned MessageLength = 0;
5143 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
5144 StringRef V(A->getValue());
5145 if (V.getAsInteger(0, MessageLength))
5146 D.Diag(diag::err_drv_invalid_argument_to_option)
5147 << V << A->getOption().getName();
5149 // If -fmessage-length=N was not specified, determine whether this is a
5150 // terminal and, if so, implicitly define -fmessage-length appropriately.
5151 MessageLength = llvm::sys::Process::StandardErrColumns();
5153 if (MessageLength != 0)
5155 Args.MakeArgString("-fmessage-length=" + Twine(MessageLength)));
5157 // -fvisibility= and -fvisibility-ms-compat are of a piece.
5158 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
5159 options::OPT_fvisibility_ms_compat)) {
5160 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
5161 CmdArgs.push_back("-fvisibility");
5162 CmdArgs.push_back(A->getValue());
5164 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
5165 CmdArgs.push_back("-fvisibility");
5166 CmdArgs.push_back("hidden");
5167 CmdArgs.push_back("-ftype-visibility");
5168 CmdArgs.push_back("default");
5172 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
5173 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
5175 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
5177 // Forward -f (flag) options which we can pass directly.
5178 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
5179 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
5180 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
5181 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
5182 Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
5183 options::OPT_fno_emulated_tls);
5185 // AltiVec-like language extensions aren't relevant for assembling.
5186 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
5187 Args.AddLastArg(CmdArgs, options::OPT_fzvector);
5189 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
5190 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
5192 // Forward flags for OpenMP. We don't do this if the current action is an
5193 // device offloading action other than OpenMP.
5194 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
5195 options::OPT_fno_openmp, false) &&
5196 (JA.isDeviceOffloading(Action::OFK_None) ||
5197 JA.isDeviceOffloading(Action::OFK_OpenMP))) {
5198 switch (D.getOpenMPRuntime(Args)) {
5199 case Driver::OMPRT_OMP:
5200 case Driver::OMPRT_IOMP5:
5201 // Clang can generate useful OpenMP code for these two runtime libraries.
5202 CmdArgs.push_back("-fopenmp");
5204 // If no option regarding the use of TLS in OpenMP codegeneration is
5205 // given, decide a default based on the target. Otherwise rely on the
5206 // options and pass the right information to the frontend.
5207 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
5208 options::OPT_fnoopenmp_use_tls, /*Default=*/true))
5209 CmdArgs.push_back("-fnoopenmp-use-tls");
5210 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
5211 options::OPT_fno_openmp_simd);
5212 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_enable_irbuilder);
5213 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
5214 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
5215 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
5216 Args.AddAllArgs(CmdArgs,
5217 options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
5218 if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
5219 options::OPT_fno_openmp_optimistic_collapse,
5221 CmdArgs.push_back("-fopenmp-optimistic-collapse");
5223 // When in OpenMP offloading mode with NVPTX target, forward
5225 if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
5226 options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
5227 CmdArgs.push_back("-fopenmp-cuda-mode");
5229 // When in OpenMP offloading mode with NVPTX target, forward
5230 // cuda-parallel-target-regions flag
5231 if (Args.hasFlag(options::OPT_fopenmp_cuda_parallel_target_regions,
5232 options::OPT_fno_openmp_cuda_parallel_target_regions,
5234 CmdArgs.push_back("-fopenmp-cuda-parallel-target-regions");
5236 // When in OpenMP offloading mode with NVPTX target, check if full runtime
5238 if (Args.hasFlag(options::OPT_fopenmp_cuda_force_full_runtime,
5239 options::OPT_fno_openmp_cuda_force_full_runtime,
5241 CmdArgs.push_back("-fopenmp-cuda-force-full-runtime");
5244 // By default, if Clang doesn't know how to generate useful OpenMP code
5245 // for a specific runtime library, we just don't pass the '-fopenmp' flag
5246 // down to the actual compilation.
5247 // FIXME: It would be better to have a mode which *only* omits IR
5248 // generation based on the OpenMP support so that we get consistent
5249 // semantic analysis, etc.
5253 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
5254 options::OPT_fno_openmp_simd);
5255 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
5258 const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
5259 Sanitize.addArgs(TC, Args, CmdArgs, InputType);
5261 const XRayArgs &XRay = TC.getXRayArgs();
5262 XRay.addArgs(TC, Args, CmdArgs, InputType);
5264 if (Arg *A = Args.getLastArg(options::OPT_fpatchable_function_entry_EQ)) {
5265 StringRef S0 = A->getValue(), S = S0;
5266 unsigned Size, Offset = 0;
5267 if (!Triple.isAArch64() && Triple.getArch() != llvm::Triple::x86 &&
5268 Triple.getArch() != llvm::Triple::x86_64)
5269 D.Diag(diag::err_drv_unsupported_opt_for_target)
5270 << A->getAsString(Args) << TripleStr;
5271 else if (S.consumeInteger(10, Size) ||
5272 (!S.empty() && (!S.consume_front(",") ||
5273 S.consumeInteger(10, Offset) || !S.empty())))
5274 D.Diag(diag::err_drv_invalid_argument_to_option)
5275 << S0 << A->getOption().getName();
5276 else if (Size < Offset)
5277 D.Diag(diag::err_drv_unsupported_fpatchable_function_entry_argument);
5279 CmdArgs.push_back(Args.MakeArgString(A->getSpelling() + Twine(Size)));
5280 CmdArgs.push_back(Args.MakeArgString(
5281 "-fpatchable-function-entry-offset=" + Twine(Offset)));
5285 if (TC.SupportsProfiling()) {
5286 Args.AddLastArg(CmdArgs, options::OPT_pg);
5288 llvm::Triple::ArchType Arch = TC.getArch();
5289 if (Arg *A = Args.getLastArg(options::OPT_mfentry)) {
5290 if (Arch == llvm::Triple::systemz || TC.getTriple().isX86())
5291 A->render(Args, CmdArgs);
5293 D.Diag(diag::err_drv_unsupported_opt_for_target)
5294 << A->getAsString(Args) << TripleStr;
5296 if (Arg *A = Args.getLastArg(options::OPT_mnop_mcount)) {
5297 if (Arch == llvm::Triple::systemz)
5298 A->render(Args, CmdArgs);
5300 D.Diag(diag::err_drv_unsupported_opt_for_target)
5301 << A->getAsString(Args) << TripleStr;
5303 if (Arg *A = Args.getLastArg(options::OPT_mrecord_mcount)) {
5304 if (Arch == llvm::Triple::systemz)
5305 A->render(Args, CmdArgs);
5307 D.Diag(diag::err_drv_unsupported_opt_for_target)
5308 << A->getAsString(Args) << TripleStr;
5312 if (Args.getLastArg(options::OPT_fapple_kext) ||
5313 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
5314 CmdArgs.push_back("-fapple-kext");
5316 Args.AddLastArg(CmdArgs, options::OPT_flax_vector_conversions_EQ);
5317 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
5318 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
5319 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
5320 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
5321 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace);
5322 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);
5323 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
5324 Args.AddLastArg(CmdArgs, options::OPT_malign_double);
5325 Args.AddLastArg(CmdArgs, options::OPT_fno_temp_file);
5327 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
5328 CmdArgs.push_back("-ftrapv-handler");
5329 CmdArgs.push_back(A->getValue());
5332 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
5334 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
5335 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
5336 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
5337 if (A->getOption().matches(options::OPT_fwrapv))
5338 CmdArgs.push_back("-fwrapv");
5339 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
5340 options::OPT_fno_strict_overflow)) {
5341 if (A->getOption().matches(options::OPT_fno_strict_overflow))
5342 CmdArgs.push_back("-fwrapv");
5345 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
5346 options::OPT_fno_reroll_loops))
5347 if (A->getOption().matches(options::OPT_freroll_loops))
5348 CmdArgs.push_back("-freroll-loops");
5350 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
5351 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
5352 options::OPT_fno_unroll_loops);
5354 Args.AddLastArg(CmdArgs, options::OPT_pthread);
5356 if (Args.hasFlag(options::OPT_mspeculative_load_hardening,
5357 options::OPT_mno_speculative_load_hardening, false))
5358 CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening"));
5360 RenderSSPOptions(TC, Args, CmdArgs, KernelOrKext);
5361 RenderSCPOptions(TC, Args, CmdArgs);
5362 RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
5364 // Translate -mstackrealign
5365 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
5367 CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
5369 if (Args.hasArg(options::OPT_mstack_alignment)) {
5370 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
5371 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
5374 if (Args.hasArg(options::OPT_mstack_probe_size)) {
5375 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
5378 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
5380 CmdArgs.push_back("-mstack-probe-size=0");
5383 if (!Args.hasFlag(options::OPT_mstack_arg_probe,
5384 options::OPT_mno_stack_arg_probe, true))
5385 CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
5387 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
5388 options::OPT_mno_restrict_it)) {
5389 if (A->getOption().matches(options::OPT_mrestrict_it)) {
5390 CmdArgs.push_back("-mllvm");
5391 CmdArgs.push_back("-arm-restrict-it");
5393 CmdArgs.push_back("-mllvm");
5394 CmdArgs.push_back("-arm-no-restrict-it");
5396 } else if (Triple.isOSWindows() &&
5397 (Triple.getArch() == llvm::Triple::arm ||
5398 Triple.getArch() == llvm::Triple::thumb)) {
5399 // Windows on ARM expects restricted IT blocks
5400 CmdArgs.push_back("-mllvm");
5401 CmdArgs.push_back("-arm-restrict-it");
5404 // Forward -cl options to -cc1
5405 RenderOpenCLOptions(Args, CmdArgs);
5407 if (IsHIP && Args.hasFlag(options::OPT_fhip_new_launch_api,
5408 options::OPT_fno_hip_new_launch_api, true))
5409 CmdArgs.push_back("-fhip-new-launch-api");
5411 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
5413 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
5416 // Forward -f options with positive and negative forms; we translate
5418 if (Arg *A = getLastProfileSampleUseArg(Args)) {
5419 auto *PGOArg = Args.getLastArg(
5420 options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,
5421 options::OPT_fcs_profile_generate, options::OPT_fcs_profile_generate_EQ,
5422 options::OPT_fprofile_use, options::OPT_fprofile_use_EQ);
5424 D.Diag(diag::err_drv_argument_not_allowed_with)
5425 << "SampleUse with PGO options";
5427 StringRef fname = A->getValue();
5428 if (!llvm::sys::fs::exists(fname))
5429 D.Diag(diag::err_drv_no_such_file) << fname;
5431 A->render(Args, CmdArgs);
5433 Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
5435 RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
5437 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
5438 options::OPT_fno_assume_sane_operator_new))
5439 CmdArgs.push_back("-fno-assume-sane-operator-new");
5441 // -fblocks=0 is default.
5442 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
5443 TC.IsBlocksDefault()) ||
5444 (Args.hasArg(options::OPT_fgnu_runtime) &&
5445 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
5446 !Args.hasArg(options::OPT_fno_blocks))) {
5447 CmdArgs.push_back("-fblocks");
5449 if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
5450 CmdArgs.push_back("-fblocks-runtime-optional");
5453 // -fencode-extended-block-signature=1 is default.
5454 if (TC.IsEncodeExtendedBlockSignatureDefault())
5455 CmdArgs.push_back("-fencode-extended-block-signature");
5457 if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
5459 types::isCXX(InputType)) {
5460 CmdArgs.push_back("-fcoroutines-ts");
5463 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
5464 options::OPT_fno_double_square_bracket_attributes);
5466 // -faccess-control is default.
5467 if (Args.hasFlag(options::OPT_fno_access_control,
5468 options::OPT_faccess_control, false))
5469 CmdArgs.push_back("-fno-access-control");
5471 // -felide-constructors is the default.
5472 if (Args.hasFlag(options::OPT_fno_elide_constructors,
5473 options::OPT_felide_constructors, false))
5474 CmdArgs.push_back("-fno-elide-constructors");
5476 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
5478 if (KernelOrKext || (types::isCXX(InputType) &&
5479 (RTTIMode == ToolChain::RM_Disabled)))
5480 CmdArgs.push_back("-fno-rtti");
5482 // -fshort-enums=0 is default for all architectures except Hexagon.
5483 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
5484 TC.getArch() == llvm::Triple::hexagon))
5485 CmdArgs.push_back("-fshort-enums");
5487 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
5489 // -fuse-cxa-atexit is default.
5491 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
5492 !RawTriple.isOSAIX() && !RawTriple.isOSWindows() &&
5493 TC.getArch() != llvm::Triple::xcore &&
5494 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
5495 RawTriple.hasEnvironment())) ||
5497 CmdArgs.push_back("-fno-use-cxa-atexit");
5499 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
5500 options::OPT_fno_register_global_dtors_with_atexit,
5501 RawTriple.isOSDarwin() && !KernelOrKext))
5502 CmdArgs.push_back("-fregister-global-dtors-with-atexit");
5504 // -fno-use-line-directives is default.
5505 if (Args.hasFlag(options::OPT_fuse_line_directives,
5506 options::OPT_fno_use_line_directives, false))
5507 CmdArgs.push_back("-fuse-line-directives");
5509 // -fms-extensions=0 is default.
5510 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
5512 CmdArgs.push_back("-fms-extensions");
5514 // -fms-compatibility=0 is default.
5515 bool IsMSVCCompat = Args.hasFlag(
5516 options::OPT_fms_compatibility, options::OPT_fno_ms_compatibility,
5517 (IsWindowsMSVC && Args.hasFlag(options::OPT_fms_extensions,
5518 options::OPT_fno_ms_extensions, true)));
5520 CmdArgs.push_back("-fms-compatibility");
5522 // Handle -fgcc-version, if present.
5523 VersionTuple GNUCVer;
5524 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {
5525 // Check that the version has 1 to 3 components and the minor and patch
5526 // versions fit in two decimal digits.
5527 StringRef Val = A->getValue();
5528 Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable.
5529 bool Invalid = GNUCVer.tryParse(Val);
5530 unsigned Minor = GNUCVer.getMinor().getValueOr(0);
5531 unsigned Patch = GNUCVer.getSubminor().getValueOr(0);
5532 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
5533 D.Diag(diag::err_drv_invalid_value)
5534 << A->getAsString(Args) << A->getValue();
5536 } else if (!IsMSVCCompat) {
5537 // Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect.
5538 GNUCVer = VersionTuple(4, 2, 1);
5540 if (!GNUCVer.empty()) {
5542 Args.MakeArgString("-fgnuc-version=" + GNUCVer.getAsString()));
5545 VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
5548 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
5550 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
5551 if (ImplyVCPPCXXVer) {
5552 StringRef LanguageStandard;
5553 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
5555 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
5556 .Case("c++14", "-std=c++14")
5557 .Case("c++17", "-std=c++17")
5558 .Case("c++latest", "-std=c++2a")
5560 if (LanguageStandard.empty())
5561 D.Diag(clang::diag::warn_drv_unused_argument)
5562 << StdArg->getAsString(Args);
5565 if (LanguageStandard.empty()) {
5566 if (IsMSVC2015Compatible)
5567 LanguageStandard = "-std=c++14";
5569 LanguageStandard = "-std=c++11";
5572 CmdArgs.push_back(LanguageStandard.data());
5575 // -fno-borland-extensions is default.
5576 if (Args.hasFlag(options::OPT_fborland_extensions,
5577 options::OPT_fno_borland_extensions, false))
5578 CmdArgs.push_back("-fborland-extensions");
5580 // -fno-declspec is default, except for PS4.
5581 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
5583 CmdArgs.push_back("-fdeclspec");
5584 else if (Args.hasArg(options::OPT_fno_declspec))
5585 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
5587 // -fthreadsafe-static is default, except for MSVC compatibility versions less
5589 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
5590 options::OPT_fno_threadsafe_statics,
5591 !IsWindowsMSVC || IsMSVC2015Compatible))
5592 CmdArgs.push_back("-fno-threadsafe-statics");
5594 // -fno-delayed-template-parsing is default, except when targeting MSVC.
5595 // Many old Windows SDK versions require this to parse.
5596 // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
5597 // compiler. We should be able to disable this by default at some point.
5598 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
5599 options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
5600 CmdArgs.push_back("-fdelayed-template-parsing");
5602 // -fgnu-keywords default varies depending on language; only pass if
5604 Args.AddLastArg(CmdArgs, options::OPT_fgnu_keywords,
5605 options::OPT_fno_gnu_keywords);
5607 if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
5609 CmdArgs.push_back("-fgnu89-inline");
5611 if (Args.hasArg(options::OPT_fno_inline))
5612 CmdArgs.push_back("-fno-inline");
5614 Args.AddLastArg(CmdArgs, options::OPT_finline_functions,
5615 options::OPT_finline_hint_functions,
5616 options::OPT_fno_inline_functions);
5618 // FIXME: Find a better way to determine whether the language has modules
5619 // support by default, or just assume that all languages do.
5621 Std && (Std->containsValue("c++2a") || Std->containsValue("c++latest"));
5622 RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
5624 if (Args.hasFlag(options::OPT_fpch_validate_input_files_content,
5625 options::OPT_fno_pch_validate_input_files_content, false))
5626 CmdArgs.push_back("-fvalidate-ast-input-files-content");
5627 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
5628 options::OPT_fno_pch_instantiate_templates, false))
5629 CmdArgs.push_back("-fpch-instantiate-templates");
5630 if (Args.hasFlag(options::OPT_fpch_codegen, options::OPT_fno_pch_codegen,
5632 CmdArgs.push_back("-fmodules-codegen");
5633 if (Args.hasFlag(options::OPT_fpch_debuginfo, options::OPT_fno_pch_debuginfo,
5635 CmdArgs.push_back("-fmodules-debuginfo");
5637 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
5638 options::OPT_fno_experimental_new_pass_manager);
5640 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, Inputs, CmdArgs, rewriteKind);
5641 RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
5644 if (Args.hasFlag(options::OPT_fapplication_extension,
5645 options::OPT_fno_application_extension, false))
5646 CmdArgs.push_back("-fapplication-extension");
5648 // Handle GCC-style exception args.
5649 if (!C.getDriver().IsCLMode())
5650 addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
5652 // Handle exception personalities
5653 Arg *A = Args.getLastArg(
5654 options::OPT_fsjlj_exceptions, options::OPT_fseh_exceptions,
5655 options::OPT_fdwarf_exceptions, options::OPT_fwasm_exceptions);
5657 const Option &Opt = A->getOption();
5658 if (Opt.matches(options::OPT_fsjlj_exceptions))
5659 CmdArgs.push_back("-fsjlj-exceptions");
5660 if (Opt.matches(options::OPT_fseh_exceptions))
5661 CmdArgs.push_back("-fseh-exceptions");
5662 if (Opt.matches(options::OPT_fdwarf_exceptions))
5663 CmdArgs.push_back("-fdwarf-exceptions");
5664 if (Opt.matches(options::OPT_fwasm_exceptions))
5665 CmdArgs.push_back("-fwasm-exceptions");
5667 switch (TC.GetExceptionModel(Args)) {
5670 case llvm::ExceptionHandling::DwarfCFI:
5671 CmdArgs.push_back("-fdwarf-exceptions");
5673 case llvm::ExceptionHandling::SjLj:
5674 CmdArgs.push_back("-fsjlj-exceptions");
5676 case llvm::ExceptionHandling::WinEH:
5677 CmdArgs.push_back("-fseh-exceptions");
5682 // C++ "sane" operator new.
5683 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
5684 options::OPT_fno_assume_sane_operator_new))
5685 CmdArgs.push_back("-fno-assume-sane-operator-new");
5687 // -frelaxed-template-template-args is off by default, as it is a severe
5688 // breaking change until a corresponding change to template partial ordering
5690 if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
5691 options::OPT_fno_relaxed_template_template_args, false))
5692 CmdArgs.push_back("-frelaxed-template-template-args");
5694 // -fsized-deallocation is off by default, as it is an ABI-breaking change for
5696 if (Args.hasFlag(options::OPT_fsized_deallocation,
5697 options::OPT_fno_sized_deallocation, false))
5698 CmdArgs.push_back("-fsized-deallocation");
5700 // -faligned-allocation is on by default in C++17 onwards and otherwise off
5702 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
5703 options::OPT_fno_aligned_allocation,
5704 options::OPT_faligned_new_EQ)) {
5705 if (A->getOption().matches(options::OPT_fno_aligned_allocation))
5706 CmdArgs.push_back("-fno-aligned-allocation");
5708 CmdArgs.push_back("-faligned-allocation");
5711 // The default new alignment can be specified using a dedicated option or via
5712 // a GCC-compatible option that also turns on aligned allocation.
5713 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
5714 options::OPT_faligned_new_EQ))
5716 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
5718 // -fconstant-cfstrings is default, and may be subject to argument translation
5720 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
5721 options::OPT_fno_constant_cfstrings) ||
5722 !Args.hasFlag(options::OPT_mconstant_cfstrings,
5723 options::OPT_mno_constant_cfstrings))
5724 CmdArgs.push_back("-fno-constant-cfstrings");
5726 // -fno-pascal-strings is default, only pass non-default.
5727 if (Args.hasFlag(options::OPT_fpascal_strings,
5728 options::OPT_fno_pascal_strings, false))
5729 CmdArgs.push_back("-fpascal-strings");
5731 // Honor -fpack-struct= and -fpack-struct, if given. Note that
5732 // -fno-pack-struct doesn't apply to -fpack-struct=.
5733 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
5734 std::string PackStructStr = "-fpack-struct=";
5735 PackStructStr += A->getValue();
5736 CmdArgs.push_back(Args.MakeArgString(PackStructStr));
5737 } else if (Args.hasFlag(options::OPT_fpack_struct,
5738 options::OPT_fno_pack_struct, false)) {
5739 CmdArgs.push_back("-fpack-struct=1");
5742 // Handle -fmax-type-align=N and -fno-type-align
5743 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
5744 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
5745 if (!SkipMaxTypeAlign) {
5746 std::string MaxTypeAlignStr = "-fmax-type-align=";
5747 MaxTypeAlignStr += A->getValue();
5748 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
5750 } else if (RawTriple.isOSDarwin()) {
5751 if (!SkipMaxTypeAlign) {
5752 std::string MaxTypeAlignStr = "-fmax-type-align=16";
5753 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
5757 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
5758 CmdArgs.push_back("-Qn");
5760 // -fno-common is the default, set -fcommon only when that flag is set.
5761 if (Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common, false))
5762 CmdArgs.push_back("-fcommon");
5764 // -fsigned-bitfields is default, and clang doesn't yet support
5765 // -funsigned-bitfields.
5766 if (!Args.hasFlag(options::OPT_fsigned_bitfields,
5767 options::OPT_funsigned_bitfields))
5768 D.Diag(diag::warn_drv_clang_unsupported)
5769 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
5771 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
5772 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
5773 D.Diag(diag::err_drv_clang_unsupported)
5774 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
5776 // -finput_charset=UTF-8 is default. Reject others
5777 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
5778 StringRef value = inputCharset->getValue();
5779 if (!value.equals_lower("utf-8"))
5780 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
5784 // -fexec_charset=UTF-8 is default. Reject others
5785 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
5786 StringRef value = execCharset->getValue();
5787 if (!value.equals_lower("utf-8"))
5788 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
5792 RenderDiagnosticsOptions(D, Args, CmdArgs);
5794 // -fno-asm-blocks is default.
5795 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
5797 CmdArgs.push_back("-fasm-blocks");
5799 // -fgnu-inline-asm is default.
5800 if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
5801 options::OPT_fno_gnu_inline_asm, true))
5802 CmdArgs.push_back("-fno-gnu-inline-asm");
5804 // Enable vectorization per default according to the optimization level
5805 // selected. For optimization levels that want vectorization we use the alias
5806 // option to simplify the hasFlag logic.
5807 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
5808 OptSpecifier VectorizeAliasOption =
5809 EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
5810 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
5811 options::OPT_fno_vectorize, EnableVec))
5812 CmdArgs.push_back("-vectorize-loops");
5814 // -fslp-vectorize is enabled based on the optimization level selected.
5815 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
5816 OptSpecifier SLPVectAliasOption =
5817 EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
5818 if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
5819 options::OPT_fno_slp_vectorize, EnableSLPVec))
5820 CmdArgs.push_back("-vectorize-slp");
5822 ParseMPreferVectorWidth(D, Args, CmdArgs);
5824 Args.AddLastArg(CmdArgs, options::OPT_fshow_overloads_EQ);
5825 Args.AddLastArg(CmdArgs,
5826 options::OPT_fsanitize_undefined_strip_path_components_EQ);
5828 // -fdollars-in-identifiers default varies depending on platform and
5829 // language; only pass if specified.
5830 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
5831 options::OPT_fno_dollars_in_identifiers)) {
5832 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
5833 CmdArgs.push_back("-fdollars-in-identifiers");
5835 CmdArgs.push_back("-fno-dollars-in-identifiers");
5838 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
5839 // practical purposes.
5840 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
5841 options::OPT_fno_unit_at_a_time)) {
5842 if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
5843 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
5846 if (Args.hasFlag(options::OPT_fapple_pragma_pack,
5847 options::OPT_fno_apple_pragma_pack, false))
5848 CmdArgs.push_back("-fapple-pragma-pack");
5850 // Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
5851 if (willEmitRemarks(Args) && checkRemarksOptions(D, Args, Triple))
5852 renderRemarksOptions(Args, CmdArgs, Triple, Input, Output, JA);
5854 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
5855 options::OPT_fno_rewrite_imports, false);
5857 CmdArgs.push_back("-frewrite-imports");
5859 // Enable rewrite includes if the user's asked for it or if we're generating
5861 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
5862 // nice to enable this when doing a crashdump for modules as well.
5863 if (Args.hasFlag(options::OPT_frewrite_includes,
5864 options::OPT_fno_rewrite_includes, false) ||
5865 (C.isForDiagnostics() && !HaveModules))
5866 CmdArgs.push_back("-frewrite-includes");
5868 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
5869 if (Arg *A = Args.getLastArg(options::OPT_traditional,
5870 options::OPT_traditional_cpp)) {
5871 if (isa<PreprocessJobAction>(JA))
5872 CmdArgs.push_back("-traditional-cpp");
5874 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
5877 Args.AddLastArg(CmdArgs, options::OPT_dM);
5878 Args.AddLastArg(CmdArgs, options::OPT_dD);
5880 Args.AddLastArg(CmdArgs, options::OPT_fmax_tokens_EQ);
5882 // Handle serialized diagnostics.
5883 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
5884 CmdArgs.push_back("-serialize-diagnostic-file");
5885 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
5888 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
5889 CmdArgs.push_back("-fretain-comments-from-system-headers");
5891 // Forward -fcomment-block-commands to -cc1.
5892 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
5893 // Forward -fparse-all-comments to -cc1.
5894 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
5896 // Turn -fplugin=name.so into -load name.so
5897 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
5898 CmdArgs.push_back("-load");
5899 CmdArgs.push_back(A->getValue());
5903 // Forward -fpass-plugin=name.so to -cc1.
5904 for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {
5906 Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));
5910 // Setup statistics file output.
5911 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
5912 if (!StatsFile.empty())
5913 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
5915 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
5917 // -finclude-default-header flag is for preprocessor,
5918 // do not pass it to other cc1 commands when save-temps is enabled
5919 if (C.getDriver().isSaveTempsEnabled() &&
5920 !isa<PreprocessJobAction>(JA)) {
5921 for (auto Arg : Args.filtered(options::OPT_Xclang)) {
5923 if (StringRef(Arg->getValue()) != "-finclude-default-header")
5924 CmdArgs.push_back(Arg->getValue());
5928 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
5930 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
5933 // We translate this by hand to the -cc1 argument, since nightly test uses
5934 // it and developers have been trained to spell it with -mllvm. Both
5935 // spellings are now deprecated and should be removed.
5936 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
5937 CmdArgs.push_back("-disable-llvm-optzns");
5939 A->render(Args, CmdArgs);
5943 // With -save-temps, we want to save the unoptimized bitcode output from the
5944 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
5946 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
5947 // has slightly different breakdown between stages.
5948 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
5949 // pristine IR generated by the frontend. Ideally, a new compile action should
5950 // be added so both IR can be captured.
5951 if ((C.getDriver().isSaveTempsEnabled() ||
5952 JA.isHostOffloading(Action::OFK_OpenMP)) &&
5953 !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
5954 isa<CompileJobAction>(JA))
5955 CmdArgs.push_back("-disable-llvm-passes");
5957 Args.AddAllArgs(CmdArgs, options::OPT_undef);
5959 const char *Exec = D.getClangProgramPath();
5961 // Optionally embed the -cc1 level arguments into the debug info or a
5962 // section, for build analysis.
5963 // Also record command line arguments into the debug info if
5964 // -grecord-gcc-switches options is set on.
5965 // By default, -gno-record-gcc-switches is set on and no recording.
5966 auto GRecordSwitches =
5967 Args.hasFlag(options::OPT_grecord_command_line,
5968 options::OPT_gno_record_command_line, false);
5969 auto FRecordSwitches =
5970 Args.hasFlag(options::OPT_frecord_command_line,
5971 options::OPT_fno_record_command_line, false);
5972 if (FRecordSwitches && !Triple.isOSBinFormatELF())
5973 D.Diag(diag::err_drv_unsupported_opt_for_target)
5974 << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
5976 if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
5977 ArgStringList OriginalArgs;
5978 for (const auto &Arg : Args)
5979 Arg->render(Args, OriginalArgs);
5981 SmallString<256> Flags;
5982 EscapeSpacesAndBackslashes(Exec, Flags);
5983 for (const char *OriginalArg : OriginalArgs) {
5984 SmallString<128> EscapedArg;
5985 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5987 Flags += EscapedArg;
5989 auto FlagsArgString = Args.MakeArgString(Flags);
5990 if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
5991 CmdArgs.push_back("-dwarf-debug-flags");
5992 CmdArgs.push_back(FlagsArgString);
5994 if (FRecordSwitches) {
5995 CmdArgs.push_back("-record-command-line");
5996 CmdArgs.push_back(FlagsArgString);
6000 // Host-side cuda compilation receives all device-side outputs in a single
6001 // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
6002 if ((IsCuda || IsHIP) && CudaDeviceInput) {
6003 CmdArgs.push_back("-fcuda-include-gpubinary");
6004 CmdArgs.push_back(CudaDeviceInput->getFilename());
6005 if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
6006 CmdArgs.push_back("-fgpu-rdc");
6010 if (Args.hasFlag(options::OPT_fcuda_short_ptr,
6011 options::OPT_fno_cuda_short_ptr, false))
6012 CmdArgs.push_back("-fcuda-short-ptr");
6016 CmdArgs.push_back("-fcuda-allow-variadic-functions");
6018 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
6019 // to specify the result of the compile phase on the host, so the meaningful
6020 // device declarations can be identified. Also, -fopenmp-is-device is passed
6021 // along to tell the frontend that it is generating code for a device, so that
6022 // only the relevant declarations are emitted.
6023 if (IsOpenMPDevice) {
6024 CmdArgs.push_back("-fopenmp-is-device");
6025 if (OpenMPDeviceInput) {
6026 CmdArgs.push_back("-fopenmp-host-ir-file-path");
6027 CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
6031 // For all the host OpenMP offloading compile jobs we need to pass the targets
6032 // information using -fopenmp-targets= option.
6033 if (JA.isHostOffloading(Action::OFK_OpenMP)) {
6034 SmallString<128> TargetInfo("-fopenmp-targets=");
6036 Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
6037 assert(Tgts && Tgts->getNumValues() &&
6038 "OpenMP offloading has to have targets specified.");
6039 for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
6042 // We need to get the string from the triple because it may be not exactly
6043 // the same as the one we get directly from the arguments.
6044 llvm::Triple T(Tgts->getValue(i));
6045 TargetInfo += T.getTriple();
6047 CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
6050 bool VirtualFunctionElimination =
6051 Args.hasFlag(options::OPT_fvirtual_function_elimination,
6052 options::OPT_fno_virtual_function_elimination, false);
6053 if (VirtualFunctionElimination) {
6054 // VFE requires full LTO (currently, this might be relaxed to allow ThinLTO
6056 if (D.getLTOMode() != LTOK_Full)
6057 D.Diag(diag::err_drv_argument_only_allowed_with)
6058 << "-fvirtual-function-elimination"
6061 CmdArgs.push_back("-fvirtual-function-elimination");
6064 // VFE requires whole-program-vtables, and enables it by default.
6065 bool WholeProgramVTables = Args.hasFlag(
6066 options::OPT_fwhole_program_vtables,
6067 options::OPT_fno_whole_program_vtables, VirtualFunctionElimination);
6068 if (VirtualFunctionElimination && !WholeProgramVTables) {
6069 D.Diag(diag::err_drv_argument_not_allowed_with)
6070 << "-fno-whole-program-vtables"
6071 << "-fvirtual-function-elimination";
6074 if (WholeProgramVTables) {
6075 if (!D.isUsingLTO())
6076 D.Diag(diag::err_drv_argument_only_allowed_with)
6077 << "-fwhole-program-vtables"
6079 CmdArgs.push_back("-fwhole-program-vtables");
6082 bool DefaultsSplitLTOUnit =
6083 (WholeProgramVTables || Sanitize.needsLTO()) &&
6084 (D.getLTOMode() == LTOK_Full || TC.canSplitThinLTOUnit());
6086 Args.hasFlag(options::OPT_fsplit_lto_unit,
6087 options::OPT_fno_split_lto_unit, DefaultsSplitLTOUnit);
6088 if (Sanitize.needsLTO() && !SplitLTOUnit)
6089 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fno-split-lto-unit"
6090 << "-fsanitize=cfi";
6092 CmdArgs.push_back("-fsplit-lto-unit");
6094 if (Arg *A = Args.getLastArg(options::OPT_fglobal_isel,
6095 options::OPT_fno_global_isel)) {
6096 CmdArgs.push_back("-mllvm");
6097 if (A->getOption().matches(options::OPT_fglobal_isel)) {
6098 CmdArgs.push_back("-global-isel=1");
6100 // GISel is on by default on AArch64 -O0, so don't bother adding
6101 // the fallback remarks for it. Other combinations will add a warning of
6103 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
6104 bool IsOptLevelSupported = false;
6106 Arg *A = Args.getLastArg(options::OPT_O_Group);
6107 if (Triple.getArch() == llvm::Triple::aarch64) {
6108 if (!A || A->getOption().matches(options::OPT_O0))
6109 IsOptLevelSupported = true;
6111 if (!IsArchSupported || !IsOptLevelSupported) {
6112 CmdArgs.push_back("-mllvm");
6113 CmdArgs.push_back("-global-isel-abort=2");
6115 if (!IsArchSupported)
6116 D.Diag(diag::warn_drv_global_isel_incomplete) << Triple.getArchName();
6118 D.Diag(diag::warn_drv_global_isel_incomplete_opt);
6121 CmdArgs.push_back("-global-isel=0");
6125 if (Args.hasArg(options::OPT_forder_file_instrumentation)) {
6126 CmdArgs.push_back("-forder-file-instrumentation");
6127 // Enable order file instrumentation when ThinLTO is not on. When ThinLTO is
6128 // on, we need to pass these flags as linker flags and that will be handled
6129 // outside of the compiler.
6130 if (!D.isUsingLTO()) {
6131 CmdArgs.push_back("-mllvm");
6132 CmdArgs.push_back("-enable-order-file-instrumentation");
6136 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
6137 options::OPT_fno_force_enable_int128)) {
6138 if (A->getOption().matches(options::OPT_fforce_enable_int128))
6139 CmdArgs.push_back("-fforce-enable-int128");
6142 if (Args.hasFlag(options::OPT_fkeep_static_consts,
6143 options::OPT_fno_keep_static_consts, false))
6144 CmdArgs.push_back("-fkeep-static-consts");
6146 if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
6147 options::OPT_fno_complete_member_pointers, false))
6148 CmdArgs.push_back("-fcomplete-member-pointers");
6150 if (!Args.hasFlag(options::OPT_fcxx_static_destructors,
6151 options::OPT_fno_cxx_static_destructors, true))
6152 CmdArgs.push_back("-fno-c++-static-destructors");
6154 if (Arg *A = Args.getLastArg(options::OPT_moutline,
6155 options::OPT_mno_outline)) {
6156 if (A->getOption().matches(options::OPT_moutline)) {
6157 // We only support -moutline in AArch64 and ARM targets right now. If
6158 // we're not compiling for these, emit a warning and ignore the flag.
6159 // Otherwise, add the proper mllvm flags.
6160 if (!(Triple.isARM() || Triple.isThumb() ||
6161 Triple.getArch() == llvm::Triple::aarch64 ||
6162 Triple.getArch() == llvm::Triple::aarch64_32)) {
6163 D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
6165 CmdArgs.push_back("-mllvm");
6166 CmdArgs.push_back("-enable-machine-outliner");
6169 // Disable all outlining behaviour.
6170 CmdArgs.push_back("-mllvm");
6171 CmdArgs.push_back("-enable-machine-outliner=never");
6175 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
6176 (TC.getTriple().isOSBinFormatELF() ||
6177 TC.getTriple().isOSBinFormatCOFF()) &&
6178 !TC.getTriple().isPS4() &&
6179 !TC.getTriple().isOSNetBSD() &&
6180 !Distro(D.getVFS(), TC.getTriple()).IsGentoo() &&
6181 !TC.getTriple().isAndroid() &&
6182 TC.useIntegratedAs()))
6183 CmdArgs.push_back("-faddrsig");
6185 if (Arg *A = Args.getLastArg(options::OPT_fsymbol_partition_EQ)) {
6186 std::string Str = A->getAsString(Args);
6187 if (!TC.getTriple().isOSBinFormatELF())
6188 D.Diag(diag::err_drv_unsupported_opt_for_target)
6189 << Str << TC.getTripleString();
6190 CmdArgs.push_back(Args.MakeArgString(Str));
6193 // Add the "-o out -x type src.c" flags last. This is done primarily to make
6194 // the -cc1 command easier to edit when reproducing compiler crashes.
6195 if (Output.getType() == types::TY_Dependencies) {
6196 // Handled with other dependency code.
6197 } else if (Output.isFilename()) {
6198 if (Output.getType() == clang::driver::types::TY_IFS_CPP ||
6199 Output.getType() == clang::driver::types::TY_IFS) {
6200 SmallString<128> OutputFilename(Output.getFilename());
6201 llvm::sys::path::replace_extension(OutputFilename, "ifs");
6202 CmdArgs.push_back("-o");
6203 CmdArgs.push_back(Args.MakeArgString(OutputFilename));
6205 CmdArgs.push_back("-o");
6206 CmdArgs.push_back(Output.getFilename());
6209 assert(Output.isNothing() && "Invalid output.");
6212 addDashXForInput(Args, Input, CmdArgs);
6214 ArrayRef<InputInfo> FrontendInputs = Input;
6215 if (IsHeaderModulePrecompile)
6216 FrontendInputs = ModuleHeaderInputs;
6217 else if (Input.isNothing())
6218 FrontendInputs = {};
6220 for (const InputInfo &Input : FrontendInputs) {
6221 if (Input.isFilename())
6222 CmdArgs.push_back(Input.getFilename());
6224 Input.getInputArg().renderAsInput(Args, CmdArgs);
6227 // Finally add the compile command to the compilation.
6228 if (Args.hasArg(options::OPT__SLASH_fallback) &&
6229 Output.getType() == types::TY_Object &&
6230 (InputType == types::TY_C || InputType == types::TY_CXX)) {
6232 getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
6233 C.addCommand(std::make_unique<FallbackCommand>(
6234 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,
6235 std::move(CLCommand)));
6236 } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
6237 isa<PrecompileJobAction>(JA)) {
6238 // In /fallback builds, run the main compilation even if the pch generation
6239 // fails, so that the main compilation's fallback to cl.exe runs.
6240 C.addCommand(std::make_unique<ForceSuccessCommand>(
6241 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
6242 } else if (D.CC1Main && !D.CCGenDiagnostics) {
6243 // Invoke the CC1 directly in this process
6244 C.addCommand(std::make_unique<CC1Command>(
6245 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
6247 C.addCommand(std::make_unique<Command>(
6248 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
6251 // Make the compile command echo its inputs for /showFilenames.
6252 if (Output.getType() == types::TY_Object &&
6253 Args.hasFlag(options::OPT__SLASH_showFilenames,
6254 options::OPT__SLASH_showFilenames_, false)) {
6255 C.getJobs().getJobs().back()->PrintInputFilenames = true;
6258 if (Arg *A = Args.getLastArg(options::OPT_pg))
6259 if (FPKeepKind == CodeGenOptions::FramePointerKind::None &&
6260 !Args.hasArg(options::OPT_mfentry))
6261 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
6262 << A->getAsString(Args);
6264 // Claim some arguments which clang supports automatically.
6266 // -fpch-preprocess is used with gcc to add a special marker in the output to
6267 // include the PCH file.
6268 Args.ClaimAllArgs(options::OPT_fpch_preprocess);
6270 // Claim some arguments which clang doesn't support, but we don't
6271 // care to warn the user about.
6272 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
6273 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
6275 // Disable warnings for clang -E -emit-llvm foo.c
6276 Args.ClaimAllArgs(options::OPT_emit_llvm);
6279 Clang::Clang(const ToolChain &TC)
6280 // CAUTION! The first constructor argument ("clang") is not arbitrary,
6281 // as it is for other tools. Some operations on a Tool actually test
6282 // whether that tool is Clang based on the Tool's Name as a string.
6283 : Tool("clang", "clang frontend", TC) {}
6287 /// Add options related to the Objective-C runtime/ABI.
6289 /// Returns true if the runtime is non-fragile.
6290 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
6291 const InputInfoList &inputs,
6292 ArgStringList &cmdArgs,
6293 RewriteKind rewriteKind) const {
6294 // Look for the controlling runtime option.
6296 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
6297 options::OPT_fobjc_runtime_EQ);
6299 // Just forward -fobjc-runtime= to the frontend. This supercedes
6300 // options about fragility.
6302 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
6303 ObjCRuntime runtime;
6304 StringRef value = runtimeArg->getValue();
6305 if (runtime.tryParse(value)) {
6306 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
6309 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
6310 (runtime.getVersion() >= VersionTuple(2, 0)))
6311 if (!getToolChain().getTriple().isOSBinFormatELF() &&
6312 !getToolChain().getTriple().isOSBinFormatCOFF()) {
6313 getToolChain().getDriver().Diag(
6314 diag::err_drv_gnustep_objc_runtime_incompatible_binary)
6315 << runtime.getVersion().getMajor();
6318 runtimeArg->render(args, cmdArgs);
6322 // Otherwise, we'll need the ABI "version". Version numbers are
6323 // slightly confusing for historical reasons:
6324 // 1 - Traditional "fragile" ABI
6325 // 2 - Non-fragile ABI, version 1
6326 // 3 - Non-fragile ABI, version 2
6327 unsigned objcABIVersion = 1;
6328 // If -fobjc-abi-version= is present, use that to set the version.
6329 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
6330 StringRef value = abiArg->getValue();
6333 else if (value == "2")
6335 else if (value == "3")
6338 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
6340 // Otherwise, determine if we are using the non-fragile ABI.
6341 bool nonFragileABIIsDefault =
6342 (rewriteKind == RK_NonFragile ||
6343 (rewriteKind == RK_None &&
6344 getToolChain().IsObjCNonFragileABIDefault()));
6345 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
6346 options::OPT_fno_objc_nonfragile_abi,
6347 nonFragileABIIsDefault)) {
6348 // Determine the non-fragile ABI version to use.
6349 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
6350 unsigned nonFragileABIVersion = 1;
6352 unsigned nonFragileABIVersion = 2;
6356 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
6357 StringRef value = abiArg->getValue();
6359 nonFragileABIVersion = 1;
6360 else if (value == "2")
6361 nonFragileABIVersion = 2;
6363 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
6367 objcABIVersion = 1 + nonFragileABIVersion;
6373 // We don't actually care about the ABI version other than whether
6374 // it's non-fragile.
6375 bool isNonFragile = objcABIVersion != 1;
6377 // If we have no runtime argument, ask the toolchain for its default runtime.
6378 // However, the rewriter only really supports the Mac runtime, so assume that.
6379 ObjCRuntime runtime;
6381 switch (rewriteKind) {
6383 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
6386 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
6389 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
6394 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
6395 // On Darwin, make this use the default behavior for the toolchain.
6396 if (getToolChain().getTriple().isOSDarwin()) {
6397 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
6399 // Otherwise, build for a generic macosx port.
6401 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
6406 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
6407 // Legacy behaviour is to target the gnustep runtime if we are in
6408 // non-fragile mode or the GCC runtime in fragile mode.
6410 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
6412 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
6415 if (llvm::any_of(inputs, [](const InputInfo &input) {
6416 return types::isObjC(input.getType());
6419 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
6423 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
6424 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
6432 bool Asynch = false;
6433 bool NoUnwindC = false;
6435 } // end anonymous namespace
6437 /// /EH controls whether to run destructor cleanups when exceptions are
6438 /// thrown. There are three modifiers:
6439 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
6440 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
6441 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
6442 /// - c: Assume that extern "C" functions are implicitly nounwind.
6443 /// The default is /EHs-c-, meaning cleanups are disabled.
6444 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
6447 std::vector<std::string> EHArgs =
6448 Args.getAllArgValues(options::OPT__SLASH_EH);
6449 for (auto EHVal : EHArgs) {
6450 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
6453 EH.Asynch = maybeConsumeDash(EHVal, I);
6458 EH.NoUnwindC = maybeConsumeDash(EHVal, I);
6461 EH.Synch = maybeConsumeDash(EHVal, I);
6468 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
6472 // The /GX, /GX- flags are only processed if there are not /EH flags.
6473 // The default is that /GX is not specified.
6474 if (EHArgs.empty() &&
6475 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
6476 /*Default=*/false)) {
6478 EH.NoUnwindC = true;
6484 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
6485 ArgStringList &CmdArgs,
6486 codegenoptions::DebugInfoKind *DebugInfoKind,
6487 bool *EmitCodeView) const {
6488 unsigned RTOptionID = options::OPT__SLASH_MT;
6489 bool isNVPTX = getToolChain().getTriple().isNVPTX();
6491 if (Args.hasArg(options::OPT__SLASH_LDd))
6492 // The /LDd option implies /MTd. The dependent lib part can be overridden,
6493 // but defining _DEBUG is sticky.
6494 RTOptionID = options::OPT__SLASH_MTd;
6496 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
6497 RTOptionID = A->getOption().getID();
6499 StringRef FlagForCRT;
6500 switch (RTOptionID) {
6501 case options::OPT__SLASH_MD:
6502 if (Args.hasArg(options::OPT__SLASH_LDd))
6503 CmdArgs.push_back("-D_DEBUG");
6504 CmdArgs.push_back("-D_MT");
6505 CmdArgs.push_back("-D_DLL");
6506 FlagForCRT = "--dependent-lib=msvcrt";
6508 case options::OPT__SLASH_MDd:
6509 CmdArgs.push_back("-D_DEBUG");
6510 CmdArgs.push_back("-D_MT");
6511 CmdArgs.push_back("-D_DLL");
6512 FlagForCRT = "--dependent-lib=msvcrtd";
6514 case options::OPT__SLASH_MT:
6515 if (Args.hasArg(options::OPT__SLASH_LDd))
6516 CmdArgs.push_back("-D_DEBUG");
6517 CmdArgs.push_back("-D_MT");
6518 CmdArgs.push_back("-flto-visibility-public-std");
6519 FlagForCRT = "--dependent-lib=libcmt";
6521 case options::OPT__SLASH_MTd:
6522 CmdArgs.push_back("-D_DEBUG");
6523 CmdArgs.push_back("-D_MT");
6524 CmdArgs.push_back("-flto-visibility-public-std");
6525 FlagForCRT = "--dependent-lib=libcmtd";
6528 llvm_unreachable("Unexpected option ID.");
6531 if (Args.hasArg(options::OPT__SLASH_Zl)) {
6532 CmdArgs.push_back("-D_VC_NODEFAULTLIB");
6534 CmdArgs.push_back(FlagForCRT.data());
6536 // This provides POSIX compatibility (maps 'open' to '_open'), which most
6537 // users want. The /Za flag to cl.exe turns this off, but it's not
6538 // implemented in clang.
6539 CmdArgs.push_back("--dependent-lib=oldnames");
6542 if (Arg *ShowIncludes =
6543 Args.getLastArg(options::OPT__SLASH_showIncludes,
6544 options::OPT__SLASH_showIncludes_user)) {
6545 CmdArgs.push_back("--show-includes");
6546 if (ShowIncludes->getOption().matches(options::OPT__SLASH_showIncludes))
6547 CmdArgs.push_back("-sys-header-deps");
6550 // This controls whether or not we emit RTTI data for polymorphic types.
6551 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
6553 CmdArgs.push_back("-fno-rtti-data");
6555 // This controls whether or not we emit stack-protector instrumentation.
6556 // In MSVC, Buffer Security Check (/GS) is on by default.
6557 if (!isNVPTX && Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
6558 /*Default=*/true)) {
6559 CmdArgs.push_back("-stack-protector");
6560 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
6563 // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
6564 if (Arg *DebugInfoArg =
6565 Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
6566 options::OPT_gline_tables_only)) {
6567 *EmitCodeView = true;
6568 if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
6569 *DebugInfoKind = codegenoptions::DebugInfoConstructor;
6571 *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
6573 *EmitCodeView = false;
6576 const Driver &D = getToolChain().getDriver();
6577 EHFlags EH = parseClangCLEHFlags(D, Args);
6578 if (!isNVPTX && (EH.Synch || EH.Asynch)) {
6579 if (types::isCXX(InputType))
6580 CmdArgs.push_back("-fcxx-exceptions");
6581 CmdArgs.push_back("-fexceptions");
6583 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
6584 CmdArgs.push_back("-fexternc-nounwind");
6586 // /EP should expand to -E -P.
6587 if (Args.hasArg(options::OPT__SLASH_EP)) {
6588 CmdArgs.push_back("-E");
6589 CmdArgs.push_back("-P");
6592 unsigned VolatileOptionID;
6593 if (getToolChain().getTriple().isX86())
6594 VolatileOptionID = options::OPT__SLASH_volatile_ms;
6596 VolatileOptionID = options::OPT__SLASH_volatile_iso;
6598 if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
6599 VolatileOptionID = A->getOption().getID();
6601 if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
6602 CmdArgs.push_back("-fms-volatile");
6604 if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
6605 options::OPT__SLASH_Zc_dllexportInlines,
6607 if (Args.hasArg(options::OPT__SLASH_fallback)) {
6608 D.Diag(clang::diag::err_drv_dllexport_inlines_and_fallback);
6610 CmdArgs.push_back("-fno-dllexport-inlines");
6614 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
6615 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
6616 if (MostGeneralArg && BestCaseArg)
6617 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
6618 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
6620 if (MostGeneralArg) {
6621 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
6622 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
6623 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
6625 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
6626 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
6627 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
6628 D.Diag(clang::diag::err_drv_argument_not_allowed_with)
6629 << FirstConflict->getAsString(Args)
6630 << SecondConflict->getAsString(Args);
6633 CmdArgs.push_back("-fms-memptr-rep=single");
6634 else if (MultipleArg)
6635 CmdArgs.push_back("-fms-memptr-rep=multiple");
6637 CmdArgs.push_back("-fms-memptr-rep=virtual");
6640 // Parse the default calling convention options.
6642 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
6643 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
6644 options::OPT__SLASH_Gregcall)) {
6645 unsigned DCCOptId = CCArg->getOption().getID();
6646 const char *DCCFlag = nullptr;
6647 bool ArchSupported = !isNVPTX;
6648 llvm::Triple::ArchType Arch = getToolChain().getArch();
6650 case options::OPT__SLASH_Gd:
6651 DCCFlag = "-fdefault-calling-conv=cdecl";
6653 case options::OPT__SLASH_Gr:
6654 ArchSupported = Arch == llvm::Triple::x86;
6655 DCCFlag = "-fdefault-calling-conv=fastcall";
6657 case options::OPT__SLASH_Gz:
6658 ArchSupported = Arch == llvm::Triple::x86;
6659 DCCFlag = "-fdefault-calling-conv=stdcall";
6661 case options::OPT__SLASH_Gv:
6662 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
6663 DCCFlag = "-fdefault-calling-conv=vectorcall";
6665 case options::OPT__SLASH_Gregcall:
6666 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
6667 DCCFlag = "-fdefault-calling-conv=regcall";
6671 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
6672 if (ArchSupported && DCCFlag)
6673 CmdArgs.push_back(DCCFlag);
6676 Args.AddLastArg(CmdArgs, options::OPT_vtordisp_mode_EQ);
6678 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
6679 CmdArgs.push_back("-fdiagnostics-format");
6680 if (Args.hasArg(options::OPT__SLASH_fallback))
6681 CmdArgs.push_back("msvc-fallback");
6683 CmdArgs.push_back("msvc");
6686 if (Arg *A = Args.getLastArg(options::OPT__SLASH_guard)) {
6687 StringRef GuardArgs = A->getValue();
6688 // The only valid options are "cf", "cf,nochecks", and "cf-".
6689 if (GuardArgs.equals_lower("cf")) {
6690 // Emit CFG instrumentation and the table of address-taken functions.
6691 CmdArgs.push_back("-cfguard");
6692 } else if (GuardArgs.equals_lower("cf,nochecks")) {
6693 // Emit only the table of address-taken functions.
6694 CmdArgs.push_back("-cfguard-no-checks");
6695 } else if (GuardArgs.equals_lower("cf-")) {
6696 // Do nothing, but we might want to emit a security warning in future.
6698 D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << GuardArgs;
6703 visualstudio::Compiler *Clang::getCLFallback() const {
6705 CLFallback.reset(new visualstudio::Compiler(getToolChain()));
6706 return CLFallback.get();
6710 const char *Clang::getBaseInputName(const ArgList &Args,
6711 const InputInfo &Input) {
6712 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
6715 const char *Clang::getBaseInputStem(const ArgList &Args,
6716 const InputInfoList &Inputs) {
6717 const char *Str = getBaseInputName(Args, Inputs[0]);
6719 if (const char *End = strrchr(Str, '.'))
6720 return Args.MakeArgString(std::string(Str, End));
6725 const char *Clang::getDependencyFileName(const ArgList &Args,
6726 const InputInfoList &Inputs) {
6727 // FIXME: Think about this more.
6729 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
6730 SmallString<128> OutputFilename(OutputOpt->getValue());
6731 llvm::sys::path::replace_extension(OutputFilename, llvm::Twine('d'));
6732 return Args.MakeArgString(OutputFilename);
6735 return Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".d");
6740 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
6741 ArgStringList &CmdArgs) const {
6744 const llvm::Triple &Triple = getToolChain().getTriple();
6745 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
6747 CmdArgs.push_back("-target-abi");
6748 CmdArgs.push_back(ABIName.data());
6751 void ClangAs::AddX86TargetArgs(const ArgList &Args,
6752 ArgStringList &CmdArgs) const {
6753 addX86AlignBranchArgs(getToolChain().getDriver(), Args, CmdArgs,
6756 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
6757 StringRef Value = A->getValue();
6758 if (Value == "intel" || Value == "att") {
6759 CmdArgs.push_back("-mllvm");
6760 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
6762 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
6763 << A->getOption().getName() << Value;
6768 void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
6769 ArgStringList &CmdArgs) const {
6770 const llvm::Triple &Triple = getToolChain().getTriple();
6771 StringRef ABIName = riscv::getRISCVABI(Args, Triple);
6773 CmdArgs.push_back("-target-abi");
6774 CmdArgs.push_back(ABIName.data());
6777 void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
6778 const InputInfo &Output, const InputInfoList &Inputs,
6779 const ArgList &Args,
6780 const char *LinkingOutput) const {
6781 ArgStringList CmdArgs;
6783 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
6784 const InputInfo &Input = Inputs[0];
6786 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
6787 const std::string &TripleStr = Triple.getTriple();
6788 const auto &D = getToolChain().getDriver();
6790 // Don't warn about "clang -w -c foo.s"
6791 Args.ClaimAllArgs(options::OPT_w);
6792 // and "clang -emit-llvm -c foo.s"
6793 Args.ClaimAllArgs(options::OPT_emit_llvm);
6795 claimNoWarnArgs(Args);
6797 // Invoke ourselves in -cc1as mode.
6799 // FIXME: Implement custom jobs for internal actions.
6800 CmdArgs.push_back("-cc1as");
6802 // Add the "effective" target triple.
6803 CmdArgs.push_back("-triple");
6804 CmdArgs.push_back(Args.MakeArgString(TripleStr));
6806 // Set the output mode, we currently only expect to be used as a real
6808 CmdArgs.push_back("-filetype");
6809 CmdArgs.push_back("obj");
6811 // Set the main file name, so that debug info works even with
6812 // -save-temps or preprocessed assembly.
6813 CmdArgs.push_back("-main-file-name");
6814 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
6816 // Add the target cpu
6817 std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
6819 CmdArgs.push_back("-target-cpu");
6820 CmdArgs.push_back(Args.MakeArgString(CPU));
6823 // Add the target features
6824 getTargetFeatures(D, Triple, Args, CmdArgs, true);
6826 // Ignore explicit -force_cpusubtype_ALL option.
6827 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
6829 // Pass along any -I options so we get proper .include search paths.
6830 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
6832 // Determine the original source input.
6833 const Action *SourceAction = &JA;
6834 while (SourceAction->getKind() != Action::InputClass) {
6835 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
6836 SourceAction = SourceAction->getInputs()[0];
6839 // Forward -g and handle debug info related flags, assuming we are dealing
6840 // with an actual assembly file.
6841 bool WantDebug = false;
6842 unsigned DwarfVersion = 0;
6843 Args.ClaimAllArgs(options::OPT_g_Group);
6844 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
6845 WantDebug = !A->getOption().matches(options::OPT_g0) &&
6846 !A->getOption().matches(options::OPT_ggdb0);
6848 DwarfVersion = DwarfVersionNum(A->getSpelling());
6851 unsigned DefaultDwarfVersion = ParseDebugDefaultVersion(getToolChain(), Args);
6852 if (DwarfVersion == 0)
6853 DwarfVersion = DefaultDwarfVersion;
6855 if (DwarfVersion == 0)
6856 DwarfVersion = getToolChain().GetDefaultDwarfVersion();
6858 codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
6860 if (SourceAction->getType() == types::TY_Asm ||
6861 SourceAction->getType() == types::TY_PP_Asm) {
6862 // You might think that it would be ok to set DebugInfoKind outside of
6863 // the guard for source type, however there is a test which asserts
6864 // that some assembler invocation receives no -debug-info-kind,
6865 // and it's not clear whether that test is just overly restrictive.
6866 DebugInfoKind = (WantDebug ? codegenoptions::DebugInfoConstructor
6867 : codegenoptions::NoDebugInfo);
6868 // Add the -fdebug-compilation-dir flag if needed.
6869 addDebugCompDirArg(Args, CmdArgs, C.getDriver().getVFS());
6871 addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
6873 // Set the AT_producer to the clang version when using the integrated
6874 // assembler on assembly source files.
6875 CmdArgs.push_back("-dwarf-debug-producer");
6876 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
6878 // And pass along -I options
6879 Args.AddAllArgs(CmdArgs, options::OPT_I);
6881 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
6882 llvm::DebuggerKind::Default);
6883 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
6886 // Handle -fPIC et al -- the relocation-model affects the assembler
6887 // for some targets.
6888 llvm::Reloc::Model RelocationModel;
6891 std::tie(RelocationModel, PICLevel, IsPIE) =
6892 ParsePICArgs(getToolChain(), Args);
6894 const char *RMName = RelocationModelName(RelocationModel);
6896 CmdArgs.push_back("-mrelocation-model");
6897 CmdArgs.push_back(RMName);
6900 // Optionally embed the -cc1as level arguments into the debug info, for build
6902 if (getToolChain().UseDwarfDebugFlags()) {
6903 ArgStringList OriginalArgs;
6904 for (const auto &Arg : Args)
6905 Arg->render(Args, OriginalArgs);
6907 SmallString<256> Flags;
6908 const char *Exec = getToolChain().getDriver().getClangProgramPath();
6909 EscapeSpacesAndBackslashes(Exec, Flags);
6910 for (const char *OriginalArg : OriginalArgs) {
6911 SmallString<128> EscapedArg;
6912 EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
6914 Flags += EscapedArg;
6916 CmdArgs.push_back("-dwarf-debug-flags");
6917 CmdArgs.push_back(Args.MakeArgString(Flags));
6920 // FIXME: Add -static support, once we have it.
6922 // Add target specific flags.
6923 switch (getToolChain().getArch()) {
6927 case llvm::Triple::mips:
6928 case llvm::Triple::mipsel:
6929 case llvm::Triple::mips64:
6930 case llvm::Triple::mips64el:
6931 AddMIPSTargetArgs(Args, CmdArgs);
6934 case llvm::Triple::x86:
6935 case llvm::Triple::x86_64:
6936 AddX86TargetArgs(Args, CmdArgs);
6939 case llvm::Triple::arm:
6940 case llvm::Triple::armeb:
6941 case llvm::Triple::thumb:
6942 case llvm::Triple::thumbeb:
6943 // This isn't in AddARMTargetArgs because we want to do this for assembly
6945 if (Args.hasFlag(options::OPT_mdefault_build_attributes,
6946 options::OPT_mno_default_build_attributes, true)) {
6947 CmdArgs.push_back("-mllvm");
6948 CmdArgs.push_back("-arm-add-build-attributes");
6952 case llvm::Triple::riscv32:
6953 case llvm::Triple::riscv64:
6954 AddRISCVTargetArgs(Args, CmdArgs);
6958 // Consume all the warning flags. Usually this would be handled more
6959 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
6960 // doesn't handle that so rather than warning about unused flags that are
6961 // actually used, we'll lie by omission instead.
6962 // FIXME: Stop lying and consume only the appropriate driver flags
6963 Args.ClaimAllArgs(options::OPT_W_Group);
6965 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
6966 getToolChain().getDriver());
6968 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
6970 assert(Output.isFilename() && "Unexpected lipo output.");
6971 CmdArgs.push_back("-o");
6972 CmdArgs.push_back(Output.getFilename());
6974 const llvm::Triple &T = getToolChain().getTriple();
6976 if (getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split &&
6977 T.isOSBinFormatELF()) {
6978 CmdArgs.push_back("-split-dwarf-output");
6979 CmdArgs.push_back(SplitDebugName(Args, Input, Output));
6982 assert(Input.isFilename() && "Invalid input.");
6983 CmdArgs.push_back(Input.getFilename());
6985 const char *Exec = getToolChain().getDriver().getClangProgramPath();
6986 C.addCommand(std::make_unique<Command>(
6987 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs));
6990 // Begin OffloadBundler
6992 void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
6993 const InputInfo &Output,
6994 const InputInfoList &Inputs,
6995 const llvm::opt::ArgList &TCArgs,
6996 const char *LinkingOutput) const {
6997 // The version with only one output is expected to refer to a bundling job.
6998 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
7000 // The bundling command looks like this:
7001 // clang-offload-bundler -type=bc
7002 // -targets=host-triple,openmp-triple1,openmp-triple2
7003 // -outputs=input_file
7004 // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
7006 ArgStringList CmdArgs;
7009 CmdArgs.push_back(TCArgs.MakeArgString(
7010 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
7012 assert(JA.getInputs().size() == Inputs.size() &&
7013 "Not have inputs for all dependence actions??");
7016 SmallString<128> Triples;
7017 Triples += "-targets=";
7018 for (unsigned I = 0; I < Inputs.size(); ++I) {
7022 // Find ToolChain for this input.
7023 Action::OffloadKind CurKind = Action::OFK_Host;
7024 const ToolChain *CurTC = &getToolChain();
7025 const Action *CurDep = JA.getInputs()[I];
7027 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
7029 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
7030 assert(CurTC == nullptr && "Expected one dependence!");
7031 CurKind = A->getOffloadingDeviceKind();
7035 Triples += Action::GetOffloadKindName(CurKind);
7037 Triples += CurTC->getTriple().normalize();
7038 if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
7040 Triples += CurDep->getOffloadingArch();
7043 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
7045 // Get bundled file command.
7047 TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
7049 // Get unbundled files command.
7050 SmallString<128> UB;
7052 for (unsigned I = 0; I < Inputs.size(); ++I) {
7056 // Find ToolChain for this input.
7057 const ToolChain *CurTC = &getToolChain();
7058 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
7060 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
7061 assert(CurTC == nullptr && "Expected one dependence!");
7065 UB += CurTC->getInputFilename(Inputs[I]);
7067 CmdArgs.push_back(TCArgs.MakeArgString(UB));
7069 // All the inputs are encoded as commands.
7070 C.addCommand(std::make_unique<Command>(
7071 JA, *this, ResponseFileSupport::None(),
7072 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
7076 void OffloadBundler::ConstructJobMultipleOutputs(
7077 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
7078 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
7079 const char *LinkingOutput) const {
7080 // The version with multiple outputs is expected to refer to a unbundling job.
7081 auto &UA = cast<OffloadUnbundlingJobAction>(JA);
7083 // The unbundling command looks like this:
7084 // clang-offload-bundler -type=bc
7085 // -targets=host-triple,openmp-triple1,openmp-triple2
7086 // -inputs=input_file
7087 // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
7090 ArgStringList CmdArgs;
7092 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
7093 InputInfo Input = Inputs.front();
7096 CmdArgs.push_back(TCArgs.MakeArgString(
7097 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
7100 SmallString<128> Triples;
7101 Triples += "-targets=";
7102 auto DepInfo = UA.getDependentActionsInfo();
7103 for (unsigned I = 0; I < DepInfo.size(); ++I) {
7107 auto &Dep = DepInfo[I];
7108 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
7110 Triples += Dep.DependentToolChain->getTriple().normalize();
7111 if (Dep.DependentOffloadKind == Action::OFK_HIP &&
7112 !Dep.DependentBoundArch.empty()) {
7114 Triples += Dep.DependentBoundArch;
7118 CmdArgs.push_back(TCArgs.MakeArgString(Triples));
7120 // Get bundled file command.
7122 TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
7124 // Get unbundled files command.
7125 SmallString<128> UB;
7127 for (unsigned I = 0; I < Outputs.size(); ++I) {
7130 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
7132 CmdArgs.push_back(TCArgs.MakeArgString(UB));
7133 CmdArgs.push_back("-unbundle");
7135 // All the inputs are encoded as commands.
7136 C.addCommand(std::make_unique<Command>(
7137 JA, *this, ResponseFileSupport::None(),
7138 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
7142 void OffloadWrapper::ConstructJob(Compilation &C, const JobAction &JA,
7143 const InputInfo &Output,
7144 const InputInfoList &Inputs,
7145 const ArgList &Args,
7146 const char *LinkingOutput) const {
7147 ArgStringList CmdArgs;
7149 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
7151 // Add the "effective" target triple.
7152 CmdArgs.push_back("-target");
7153 CmdArgs.push_back(Args.MakeArgString(Triple.getTriple()));
7155 // Add the output file name.
7156 assert(Output.isFilename() && "Invalid output.");
7157 CmdArgs.push_back("-o");
7158 CmdArgs.push_back(Output.getFilename());
7161 for (const InputInfo &I : Inputs) {
7162 assert(I.isFilename() && "Invalid input.");
7163 CmdArgs.push_back(I.getFilename());
7166 C.addCommand(std::make_unique<Command>(
7167 JA, *this, ResponseFileSupport::None(),
7168 Args.MakeArgString(getToolChain().GetProgramPath(getShortName())),