1 //===--- ToolChain.cpp - Collections of tools for one platform ------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "clang/Driver/ToolChain.h"
11 #include "ToolChains/CommonArgs.h"
12 #include "ToolChains/Arch/ARM.h"
13 #include "ToolChains/Clang.h"
14 #include "clang/Basic/ObjCRuntime.h"
15 #include "clang/Basic/VirtualFileSystem.h"
16 #include "clang/Config/config.h"
17 #include "clang/Driver/Action.h"
18 #include "clang/Driver/Driver.h"
19 #include "clang/Driver/DriverDiagnostic.h"
20 #include "clang/Driver/Options.h"
21 #include "clang/Driver/SanitizerArgs.h"
22 #include "clang/Driver/XRayArgs.h"
23 #include "llvm/ADT/SmallString.h"
24 #include "llvm/Option/Arg.h"
25 #include "llvm/Option/ArgList.h"
26 #include "llvm/Option/Option.h"
27 #include "llvm/Support/ErrorHandling.h"
28 #include "llvm/Support/FileSystem.h"
29 #include "llvm/Support/Path.h"
30 #include "llvm/Support/TargetParser.h"
31 #include "llvm/Support/TargetRegistry.h"
33 using namespace clang::driver;
34 using namespace clang::driver::tools;
35 using namespace clang;
37 using namespace llvm::opt;
39 static llvm::opt::Arg *GetRTTIArgument(const ArgList &Args) {
40 return Args.getLastArg(options::OPT_mkernel, options::OPT_fapple_kext,
41 options::OPT_fno_rtti, options::OPT_frtti);
44 static ToolChain::RTTIMode CalculateRTTIMode(const ArgList &Args,
45 const llvm::Triple &Triple,
46 const Arg *CachedRTTIArg) {
47 // Explicit rtti/no-rtti args
49 if (CachedRTTIArg->getOption().matches(options::OPT_frtti))
50 return ToolChain::RM_EnabledExplicitly;
52 return ToolChain::RM_DisabledExplicitly;
55 // -frtti is default, except for the PS4 CPU.
56 if (!Triple.isPS4CPU())
57 return ToolChain::RM_EnabledImplicitly;
59 // On the PS4, turning on c++ exceptions turns on rtti.
60 // We're assuming that, if we see -fexceptions, rtti gets turned on.
61 Arg *Exceptions = Args.getLastArgNoClaim(
62 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
63 options::OPT_fexceptions, options::OPT_fno_exceptions);
65 (Exceptions->getOption().matches(options::OPT_fexceptions) ||
66 Exceptions->getOption().matches(options::OPT_fcxx_exceptions)))
67 return ToolChain::RM_EnabledImplicitly;
69 return ToolChain::RM_DisabledImplicitly;
72 ToolChain::ToolChain(const Driver &D, const llvm::Triple &T,
74 : D(D), Triple(T), Args(Args), CachedRTTIArg(GetRTTIArgument(Args)),
75 CachedRTTIMode(CalculateRTTIMode(Args, Triple, CachedRTTIArg)),
77 if (Arg *A = Args.getLastArg(options::OPT_mthread_model))
78 if (!isThreadModelSupported(A->getValue()))
79 D.Diag(diag::err_drv_invalid_thread_model_for_target)
80 << A->getValue() << A->getAsString(Args);
82 std::string CandidateLibPath = getArchSpecificLibPath();
83 if (getVFS().exists(CandidateLibPath))
84 getFilePaths().push_back(CandidateLibPath);
87 ToolChain::~ToolChain() {
90 vfs::FileSystem &ToolChain::getVFS() const { return getDriver().getVFS(); }
92 bool ToolChain::useIntegratedAs() const {
93 return Args.hasFlag(options::OPT_fintegrated_as,
94 options::OPT_fno_integrated_as,
95 IsIntegratedAssemblerDefault());
98 const SanitizerArgs& ToolChain::getSanitizerArgs() const {
99 if (!SanitizerArguments.get())
100 SanitizerArguments.reset(new SanitizerArgs(*this, Args));
101 return *SanitizerArguments.get();
104 const XRayArgs& ToolChain::getXRayArgs() const {
105 if (!XRayArguments.get())
106 XRayArguments.reset(new XRayArgs(*this, Args));
107 return *XRayArguments.get();
111 struct DriverSuffix {
113 const char *ModeFlag;
116 const DriverSuffix *FindDriverSuffix(StringRef ProgName) {
117 // A list of known driver suffixes. Suffixes are compared against the
118 // program name in order. If there is a match, the frontend type is updated as
119 // necessary by applying the ModeFlag.
120 static const DriverSuffix DriverSuffixes[] = {
122 {"clang++", "--driver-mode=g++"},
123 {"clang-c++", "--driver-mode=g++"},
124 {"clang-cc", nullptr},
125 {"clang-cpp", "--driver-mode=cpp"},
126 {"clang-g++", "--driver-mode=g++"},
127 {"clang-gcc", nullptr},
128 {"clang-cl", "--driver-mode=cl"},
130 {"cpp", "--driver-mode=cpp"},
131 {"cl", "--driver-mode=cl"},
132 {"++", "--driver-mode=g++"},
135 for (size_t i = 0; i < llvm::array_lengthof(DriverSuffixes); ++i)
136 if (ProgName.endswith(DriverSuffixes[i].Suffix))
137 return &DriverSuffixes[i];
141 /// Normalize the program name from argv[0] by stripping the file extension if
142 /// present and lower-casing the string on Windows.
143 std::string normalizeProgramName(llvm::StringRef Argv0) {
144 std::string ProgName = llvm::sys::path::stem(Argv0);
146 // Transform to lowercase for case insensitive file systems.
147 std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), ::tolower);
152 const DriverSuffix *parseDriverSuffix(StringRef ProgName) {
153 // Try to infer frontend type and default target from the program name by
154 // comparing it against DriverSuffixes in order.
156 // If there is a match, the function tries to identify a target as prefix.
157 // E.g. "x86_64-linux-clang" as interpreted as suffix "clang" with target
158 // prefix "x86_64-linux". If such a target prefix is found, it may be
159 // added via -target as implicit first argument.
160 const DriverSuffix *DS = FindDriverSuffix(ProgName);
163 // Try again after stripping any trailing version number:
164 // clang++3.5 -> clang++
165 ProgName = ProgName.rtrim("0123456789.");
166 DS = FindDriverSuffix(ProgName);
170 // Try again after stripping trailing -component.
171 // clang++-tot -> clang++
172 ProgName = ProgName.slice(0, ProgName.rfind('-'));
173 DS = FindDriverSuffix(ProgName);
177 } // anonymous namespace
179 std::pair<std::string, std::string>
180 ToolChain::getTargetAndModeFromProgramName(StringRef PN) {
181 std::string ProgName = normalizeProgramName(PN);
182 const DriverSuffix *DS = parseDriverSuffix(ProgName);
184 return std::make_pair("", "");
185 std::string ModeFlag = DS->ModeFlag == nullptr ? "" : DS->ModeFlag;
187 std::string::size_type LastComponent =
188 ProgName.rfind('-', ProgName.size() - strlen(DS->Suffix));
189 if (LastComponent == std::string::npos)
190 return std::make_pair("", ModeFlag);
192 // Infer target from the prefix.
193 StringRef Prefix(ProgName);
194 Prefix = Prefix.slice(0, LastComponent);
195 std::string IgnoredError;
197 if (llvm::TargetRegistry::lookupTarget(Prefix, IgnoredError)) {
200 return std::make_pair(Target, ModeFlag);
203 StringRef ToolChain::getDefaultUniversalArchName() const {
204 // In universal driver terms, the arch name accepted by -arch isn't exactly
205 // the same as the ones that appear in the triple. Roughly speaking, this is
206 // an inverse of the darwin::getArchTypeForDarwinArchName() function, but the
207 // only interesting special case is powerpc.
208 switch (Triple.getArch()) {
209 case llvm::Triple::ppc:
211 case llvm::Triple::ppc64:
213 case llvm::Triple::ppc64le:
216 return Triple.getArchName();
220 bool ToolChain::IsUnwindTablesDefault() const {
224 Tool *ToolChain::getClang() const {
226 Clang.reset(new tools::Clang(*this));
230 Tool *ToolChain::buildAssembler() const {
231 return new tools::ClangAs(*this);
234 Tool *ToolChain::buildLinker() const {
235 llvm_unreachable("Linking is not supported by this toolchain");
238 Tool *ToolChain::getAssemble() const {
240 Assemble.reset(buildAssembler());
241 return Assemble.get();
244 Tool *ToolChain::getClangAs() const {
246 Assemble.reset(new tools::ClangAs(*this));
247 return Assemble.get();
250 Tool *ToolChain::getLink() const {
252 Link.reset(buildLinker());
256 Tool *ToolChain::getOffloadBundler() const {
258 OffloadBundler.reset(new tools::OffloadBundler(*this));
259 return OffloadBundler.get();
262 Tool *ToolChain::getTool(Action::ActionClass AC) const {
264 case Action::AssembleJobClass:
265 return getAssemble();
267 case Action::LinkJobClass:
270 case Action::InputClass:
271 case Action::BindArchClass:
272 case Action::OffloadClass:
273 case Action::LipoJobClass:
274 case Action::DsymutilJobClass:
275 case Action::VerifyDebugInfoJobClass:
276 llvm_unreachable("Invalid tool kind.");
278 case Action::CompileJobClass:
279 case Action::PrecompileJobClass:
280 case Action::PreprocessJobClass:
281 case Action::AnalyzeJobClass:
282 case Action::MigrateJobClass:
283 case Action::VerifyPCHJobClass:
284 case Action::BackendJobClass:
287 case Action::OffloadBundlingJobClass:
288 case Action::OffloadUnbundlingJobClass:
289 return getOffloadBundler();
292 llvm_unreachable("Invalid tool kind.");
295 static StringRef getArchNameForCompilerRTLib(const ToolChain &TC,
296 const ArgList &Args) {
297 const llvm::Triple &Triple = TC.getTriple();
298 bool IsWindows = Triple.isOSWindows();
300 if (Triple.isWindowsMSVCEnvironment() && TC.getArch() == llvm::Triple::x86)
303 if (TC.getArch() == llvm::Triple::arm || TC.getArch() == llvm::Triple::armeb)
304 return (arm::getARMFloatABI(TC, Args) == arm::FloatABI::Hard && !IsWindows)
308 return TC.getArchName();
311 std::string ToolChain::getCompilerRT(const ArgList &Args, StringRef Component,
313 const llvm::Triple &TT = getTriple();
314 const char *Env = TT.isAndroid() ? "-android" : "";
315 bool IsITANMSVCWindows =
316 TT.isWindowsMSVCEnvironment() || TT.isWindowsItaniumEnvironment();
318 StringRef Arch = getArchNameForCompilerRTLib(*this, Args);
319 const char *Prefix = IsITANMSVCWindows ? "" : "lib";
320 const char *Suffix = Shared ? (Triple.isOSWindows() ? ".dll" : ".so")
321 : (IsITANMSVCWindows ? ".lib" : ".a");
323 SmallString<128> Path(getDriver().ResourceDir);
324 StringRef OSLibName = Triple.isOSFreeBSD() ? "freebsd" : getOS();
325 llvm::sys::path::append(Path, "lib", OSLibName);
326 llvm::sys::path::append(Path, Prefix + Twine("clang_rt.") + Component + "-" +
327 Arch + Env + Suffix);
331 const char *ToolChain::getCompilerRTArgString(const llvm::opt::ArgList &Args,
334 return Args.MakeArgString(getCompilerRT(Args, Component, Shared));
337 std::string ToolChain::getArchSpecificLibPath() const {
338 SmallString<128> Path(getDriver().ResourceDir);
339 StringRef OSLibName = getTriple().isOSFreeBSD() ? "freebsd" : getOS();
340 llvm::sys::path::append(Path, "lib", OSLibName,
341 llvm::Triple::getArchTypeName(getArch()));
345 bool ToolChain::needsProfileRT(const ArgList &Args) {
346 if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
348 Args.hasArg(options::OPT_fprofile_generate) ||
349 Args.hasArg(options::OPT_fprofile_generate_EQ) ||
350 Args.hasArg(options::OPT_fprofile_instr_generate) ||
351 Args.hasArg(options::OPT_fprofile_instr_generate_EQ) ||
352 Args.hasArg(options::OPT_fcreate_profile) ||
353 Args.hasArg(options::OPT_coverage))
359 Tool *ToolChain::SelectTool(const JobAction &JA) const {
360 if (getDriver().ShouldUseClangCompiler(JA)) return getClang();
361 Action::ActionClass AC = JA.getKind();
362 if (AC == Action::AssembleJobClass && useIntegratedAs())
367 std::string ToolChain::GetFilePath(const char *Name) const {
368 return D.GetFilePath(Name, *this);
371 std::string ToolChain::GetProgramPath(const char *Name) const {
372 return D.GetProgramPath(Name, *this);
375 std::string ToolChain::GetLinkerPath() const {
376 const Arg* A = Args.getLastArg(options::OPT_fuse_ld_EQ);
377 StringRef UseLinker = A ? A->getValue() : CLANG_DEFAULT_LINKER;
379 if (llvm::sys::path::is_absolute(UseLinker)) {
380 // If we're passed what looks like an absolute path, don't attempt to
381 // second-guess that.
382 if (llvm::sys::fs::exists(UseLinker))
384 } else if (UseLinker.empty() || UseLinker == "ld") {
385 // If we're passed -fuse-ld= with no argument, or with the argument ld,
386 // then use whatever the default system linker is.
387 return GetProgramPath(getDefaultLinker());
389 llvm::SmallString<8> LinkerName("ld.");
390 LinkerName.append(UseLinker);
392 std::string LinkerPath(GetProgramPath(LinkerName.c_str()));
393 if (llvm::sys::fs::exists(LinkerPath))
398 getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args);
400 return GetProgramPath(getDefaultLinker());
403 types::ID ToolChain::LookupTypeForExtension(StringRef Ext) const {
404 return types::lookupTypeForExtension(Ext);
407 bool ToolChain::HasNativeLLVMSupport() const {
411 bool ToolChain::isCrossCompiling() const {
412 llvm::Triple HostTriple(LLVM_HOST_TRIPLE);
413 switch (HostTriple.getArch()) {
414 // The A32/T32/T16 instruction sets are not separate architectures in this
416 case llvm::Triple::arm:
417 case llvm::Triple::armeb:
418 case llvm::Triple::thumb:
419 case llvm::Triple::thumbeb:
420 return getArch() != llvm::Triple::arm && getArch() != llvm::Triple::thumb &&
421 getArch() != llvm::Triple::armeb && getArch() != llvm::Triple::thumbeb;
423 return HostTriple.getArch() != getArch();
427 ObjCRuntime ToolChain::getDefaultObjCRuntime(bool isNonFragile) const {
428 return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
432 bool ToolChain::isThreadModelSupported(const StringRef Model) const {
433 if (Model == "single") {
434 // FIXME: 'single' is only supported on ARM and WebAssembly so far.
435 return Triple.getArch() == llvm::Triple::arm ||
436 Triple.getArch() == llvm::Triple::armeb ||
437 Triple.getArch() == llvm::Triple::thumb ||
438 Triple.getArch() == llvm::Triple::thumbeb ||
439 Triple.getArch() == llvm::Triple::wasm32 ||
440 Triple.getArch() == llvm::Triple::wasm64;
441 } else if (Model == "posix")
447 std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
448 types::ID InputType) const {
449 switch (getTriple().getArch()) {
451 return getTripleString();
453 case llvm::Triple::x86_64: {
454 llvm::Triple Triple = getTriple();
455 if (!Triple.isOSBinFormatMachO())
456 return getTripleString();
458 if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
459 // x86_64h goes in the triple. Other -march options just use the
460 // vanilla triple we already have.
461 StringRef MArch = A->getValue();
462 if (MArch == "x86_64h")
463 Triple.setArchName(MArch);
465 return Triple.getTriple();
467 case llvm::Triple::aarch64: {
468 llvm::Triple Triple = getTriple();
469 if (!Triple.isOSBinFormatMachO())
470 return getTripleString();
472 // FIXME: older versions of ld64 expect the "arm64" component in the actual
473 // triple string and query it to determine whether an LTO file can be
474 // handled. Remove this when we don't care any more.
475 Triple.setArchName("arm64");
476 return Triple.getTriple();
478 case llvm::Triple::arm:
479 case llvm::Triple::armeb:
480 case llvm::Triple::thumb:
481 case llvm::Triple::thumbeb: {
482 // FIXME: Factor into subclasses.
483 llvm::Triple Triple = getTriple();
484 bool IsBigEndian = getTriple().getArch() == llvm::Triple::armeb ||
485 getTriple().getArch() == llvm::Triple::thumbeb;
487 // Handle pseudo-target flags '-mlittle-endian'/'-EL' and
488 // '-mbig-endian'/'-EB'.
489 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
490 options::OPT_mbig_endian)) {
491 IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
494 // Thumb2 is the default for V7 on Darwin.
496 // FIXME: Thumb should just be another -target-feaure, not in the triple.
497 StringRef MCPU, MArch;
498 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
499 MCPU = A->getValue();
500 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
501 MArch = A->getValue();
503 Triple.isOSBinFormatMachO()
504 ? tools::arm::getARMCPUForMArch(MArch, Triple).str()
505 : tools::arm::getARMTargetCPU(MCPU, MArch, Triple);
507 tools::arm::getLLVMArchSuffixForARM(CPU, MArch, Triple);
508 bool IsMProfile = ARM::parseArchProfile(Suffix) == ARM::PK_M;
509 bool ThumbDefault = IsMProfile || (ARM::parseArchVersion(Suffix) == 7 &&
510 getTriple().isOSBinFormatMachO());
511 // FIXME: this is invalid for WindowsCE
512 if (getTriple().isOSWindows())
514 std::string ArchName;
520 // Assembly files should start in ARM mode, unless arch is M-profile.
521 // Windows is always thumb.
522 if ((InputType != types::TY_PP_Asm && Args.hasFlag(options::OPT_mthumb,
523 options::OPT_mno_thumb, ThumbDefault)) || IsMProfile ||
524 getTriple().isOSWindows()) {
526 ArchName = "thumbeb";
530 Triple.setArchName(ArchName + Suffix.str());
532 return Triple.getTriple();
537 std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
538 types::ID InputType) const {
539 return ComputeLLVMTriple(Args, InputType);
542 void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
543 ArgStringList &CC1Args) const {
544 // Each toolchain should provide the appropriate include flags.
547 void ToolChain::addClangTargetOptions(const ArgList &DriverArgs,
548 ArgStringList &CC1Args) const {
551 void ToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {}
553 void ToolChain::addProfileRTLibs(const llvm::opt::ArgList &Args,
554 llvm::opt::ArgStringList &CmdArgs) const {
555 if (!needsProfileRT(Args)) return;
557 CmdArgs.push_back(getCompilerRTArgString(Args, "profile"));
560 ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType(
561 const ArgList &Args) const {
562 const Arg* A = Args.getLastArg(options::OPT_rtlib_EQ);
563 StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_RTLIB;
565 // Only use "platform" in tests to override CLANG_DEFAULT_RTLIB!
566 if (LibName == "compiler-rt")
567 return ToolChain::RLT_CompilerRT;
568 else if (LibName == "libgcc")
569 return ToolChain::RLT_Libgcc;
570 else if (LibName == "platform")
571 return GetDefaultRuntimeLibType();
574 getDriver().Diag(diag::err_drv_invalid_rtlib_name) << A->getAsString(Args);
576 return GetDefaultRuntimeLibType();
579 ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
580 const Arg *A = Args.getLastArg(options::OPT_stdlib_EQ);
581 StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_CXX_STDLIB;
583 // Only use "platform" in tests to override CLANG_DEFAULT_CXX_STDLIB!
584 if (LibName == "libc++")
585 return ToolChain::CST_Libcxx;
586 else if (LibName == "libstdc++")
587 return ToolChain::CST_Libstdcxx;
588 else if (LibName == "platform")
589 return GetDefaultCXXStdlibType();
592 getDriver().Diag(diag::err_drv_invalid_stdlib_name) << A->getAsString(Args);
594 return GetDefaultCXXStdlibType();
597 /// \brief Utility function to add a system include directory to CC1 arguments.
598 /*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
599 ArgStringList &CC1Args,
601 CC1Args.push_back("-internal-isystem");
602 CC1Args.push_back(DriverArgs.MakeArgString(Path));
605 /// \brief Utility function to add a system include directory with extern "C"
606 /// semantics to CC1 arguments.
608 /// Note that this should be used rarely, and only for directories that
609 /// historically and for legacy reasons are treated as having implicit extern
610 /// "C" semantics. These semantics are *ignored* by and large today, but its
611 /// important to preserve the preprocessor changes resulting from the
613 /*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
614 ArgStringList &CC1Args,
616 CC1Args.push_back("-internal-externc-isystem");
617 CC1Args.push_back(DriverArgs.MakeArgString(Path));
620 void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
621 ArgStringList &CC1Args,
623 if (llvm::sys::fs::exists(Path))
624 addExternCSystemInclude(DriverArgs, CC1Args, Path);
627 /// \brief Utility function to add a list of system include directories to CC1.
628 /*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
629 ArgStringList &CC1Args,
630 ArrayRef<StringRef> Paths) {
631 for (StringRef Path : Paths) {
632 CC1Args.push_back("-internal-isystem");
633 CC1Args.push_back(DriverArgs.MakeArgString(Path));
637 void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
638 ArgStringList &CC1Args) const {
639 // Header search paths should be handled by each of the subclasses.
640 // Historically, they have not been, and instead have been handled inside of
641 // the CC1-layer frontend. As the logic is hoisted out, this generic function
642 // will slowly stop being called.
644 // While it is being called, replicate a bit of a hack to propagate the
645 // '-stdlib=' flag down to CC1 so that it can in turn customize the C++
646 // header search paths with it. Once all systems are overriding this
647 // function, the CC1 flag and this line can be removed.
648 DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
651 void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
652 ArgStringList &CmdArgs) const {
653 CXXStdlibType Type = GetCXXStdlibType(Args);
656 case ToolChain::CST_Libcxx:
657 CmdArgs.push_back("-lc++");
660 case ToolChain::CST_Libstdcxx:
661 CmdArgs.push_back("-lstdc++");
666 void ToolChain::AddFilePathLibArgs(const ArgList &Args,
667 ArgStringList &CmdArgs) const {
668 for (const auto &LibPath : getFilePaths())
669 if(LibPath.length() > 0)
670 CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
673 void ToolChain::AddCCKextLibArgs(const ArgList &Args,
674 ArgStringList &CmdArgs) const {
675 CmdArgs.push_back("-lcc_kext");
678 bool ToolChain::AddFastMathRuntimeIfAvailable(const ArgList &Args,
679 ArgStringList &CmdArgs) const {
680 // Do not check for -fno-fast-math or -fno-unsafe-math when -Ofast passed
681 // (to keep the linker options consistent with gcc and clang itself).
682 if (!isOptimizationLevelFast(Args)) {
683 // Check if -ffast-math or -funsafe-math.
685 Args.getLastArg(options::OPT_ffast_math, options::OPT_fno_fast_math,
686 options::OPT_funsafe_math_optimizations,
687 options::OPT_fno_unsafe_math_optimizations);
689 if (!A || A->getOption().getID() == options::OPT_fno_fast_math ||
690 A->getOption().getID() == options::OPT_fno_unsafe_math_optimizations)
693 // If crtfastmath.o exists add it to the arguments.
694 std::string Path = GetFilePath("crtfastmath.o");
695 if (Path == "crtfastmath.o") // Not found.
698 CmdArgs.push_back(Args.MakeArgString(Path));
702 SanitizerMask ToolChain::getSupportedSanitizers() const {
703 // Return sanitizers which don't require runtime support and are not
704 // platform dependent.
705 using namespace SanitizerKind;
706 SanitizerMask Res = (Undefined & ~Vptr & ~Function) | (CFI & ~CFIICall) |
707 CFICastStrict | UnsignedIntegerOverflow | Nullability |
709 if (getTriple().getArch() == llvm::Triple::x86 ||
710 getTriple().getArch() == llvm::Triple::x86_64 ||
711 getTriple().getArch() == llvm::Triple::arm ||
712 getTriple().getArch() == llvm::Triple::aarch64 ||
713 getTriple().getArch() == llvm::Triple::wasm32 ||
714 getTriple().getArch() == llvm::Triple::wasm64)
719 void ToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs,
720 ArgStringList &CC1Args) const {}
722 void ToolChain::AddIAMCUIncludeArgs(const ArgList &DriverArgs,
723 ArgStringList &CC1Args) const {}
725 static VersionTuple separateMSVCFullVersion(unsigned Version) {
727 return VersionTuple(Version);
730 return VersionTuple(Version / 100, Version % 100);
732 unsigned Build = 0, Factor = 1;
733 for (; Version > 10000; Version = Version / 10, Factor = Factor * 10)
734 Build = Build + (Version % 10) * Factor;
735 return VersionTuple(Version / 100, Version % 100, Build);
739 ToolChain::computeMSVCVersion(const Driver *D,
740 const llvm::opt::ArgList &Args) const {
741 const Arg *MSCVersion = Args.getLastArg(options::OPT_fmsc_version);
742 const Arg *MSCompatibilityVersion =
743 Args.getLastArg(options::OPT_fms_compatibility_version);
745 if (MSCVersion && MSCompatibilityVersion) {
747 D->Diag(diag::err_drv_argument_not_allowed_with)
748 << MSCVersion->getAsString(Args)
749 << MSCompatibilityVersion->getAsString(Args);
750 return VersionTuple();
753 if (MSCompatibilityVersion) {
755 if (MSVT.tryParse(MSCompatibilityVersion->getValue())) {
757 D->Diag(diag::err_drv_invalid_value)
758 << MSCompatibilityVersion->getAsString(Args)
759 << MSCompatibilityVersion->getValue();
766 unsigned Version = 0;
767 if (StringRef(MSCVersion->getValue()).getAsInteger(10, Version)) {
769 D->Diag(diag::err_drv_invalid_value)
770 << MSCVersion->getAsString(Args) << MSCVersion->getValue();
772 return separateMSVCFullVersion(Version);
776 return VersionTuple();