clang  8.0.0svn
ToolChain.cpp
Go to the documentation of this file.
1 //===- ToolChain.cpp - Collections of tools for one platform --------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "clang/Driver/ToolChain.h"
11 #include "InputInfo.h"
12 #include "ToolChains/Arch/ARM.h"
13 #include "ToolChains/Clang.h"
15 #include "clang/Basic/Sanitizers.h"
16 #include "clang/Config/config.h"
17 #include "clang/Driver/Action.h"
18 #include "clang/Driver/Driver.h"
20 #include "clang/Driver/Job.h"
21 #include "clang/Driver/Options.h"
23 #include "clang/Driver/XRayArgs.h"
24 #include "llvm/ADT/STLExtras.h"
25 #include "llvm/ADT/SmallString.h"
26 #include "llvm/ADT/StringRef.h"
27 #include "llvm/ADT/Triple.h"
28 #include "llvm/ADT/Twine.h"
29 #include "llvm/Config/llvm-config.h"
30 #include "llvm/MC/MCTargetOptions.h"
31 #include "llvm/Option/Arg.h"
32 #include "llvm/Option/ArgList.h"
33 #include "llvm/Option/OptTable.h"
34 #include "llvm/Option/Option.h"
35 #include "llvm/Support/ErrorHandling.h"
36 #include "llvm/Support/FileSystem.h"
37 #include "llvm/Support/Path.h"
38 #include "llvm/Support/TargetParser.h"
39 #include "llvm/Support/TargetRegistry.h"
40 #include "llvm/Support/VersionTuple.h"
41 #include "llvm/Support/VirtualFileSystem.h"
42 #include <cassert>
43 #include <cstddef>
44 #include <cstring>
45 #include <string>
46 
47 using namespace clang;
48 using namespace driver;
49 using namespace tools;
50 using namespace llvm;
51 using namespace llvm::opt;
52 
53 static llvm::opt::Arg *GetRTTIArgument(const ArgList &Args) {
54  return Args.getLastArg(options::OPT_mkernel, options::OPT_fapple_kext,
55  options::OPT_fno_rtti, options::OPT_frtti);
56 }
57 
58 static ToolChain::RTTIMode CalculateRTTIMode(const ArgList &Args,
59  const llvm::Triple &Triple,
60  const Arg *CachedRTTIArg) {
61  // Explicit rtti/no-rtti args
62  if (CachedRTTIArg) {
63  if (CachedRTTIArg->getOption().matches(options::OPT_frtti))
64  return ToolChain::RM_Enabled;
65  else
67  }
68 
69  // -frtti is default, except for the PS4 CPU.
70  return (Triple.isPS4CPU()) ? ToolChain::RM_Disabled : ToolChain::RM_Enabled;
71 }
72 
73 ToolChain::ToolChain(const Driver &D, const llvm::Triple &T,
74  const ArgList &Args)
75  : D(D), Triple(T), Args(Args), CachedRTTIArg(GetRTTIArgument(Args)),
76  CachedRTTIMode(CalculateRTTIMode(Args, Triple, CachedRTTIArg)) {
78 
79  P.assign(D.ResourceDir);
80  llvm::sys::path::append(P, D.getTargetTriple(), "lib");
81  if (getVFS().exists(P))
82  getLibraryPaths().push_back(P.str());
83 
84  P.assign(D.ResourceDir);
85  llvm::sys::path::append(P, Triple.str(), "lib");
86  if (getVFS().exists(P))
87  getLibraryPaths().push_back(P.str());
88 
89  std::string CandidateLibPath = getArchSpecificLibPath();
90  if (getVFS().exists(CandidateLibPath))
91  getFilePaths().push_back(CandidateLibPath);
92 }
93 
94 void ToolChain::setTripleEnvironment(llvm::Triple::EnvironmentType Env) {
95  Triple.setEnvironment(Env);
96  if (EffectiveTriple != llvm::Triple())
97  EffectiveTriple.setEnvironment(Env);
98 }
99 
100 ToolChain::~ToolChain() = default;
101 
102 llvm::vfs::FileSystem &ToolChain::getVFS() const {
103  return getDriver().getVFS();
104 }
105 
107  return Args.hasFlag(options::OPT_fintegrated_as,
108  options::OPT_fno_integrated_as,
110 }
111 
113  return ENABLE_X86_RELAX_RELOCATIONS;
114 }
115 
117  if (!SanitizerArguments.get())
118  SanitizerArguments.reset(new SanitizerArgs(*this, Args));
119  return *SanitizerArguments.get();
120 }
121 
123  if (!XRayArguments.get())
124  XRayArguments.reset(new XRayArgs(*this, Args));
125  return *XRayArguments.get();
126 }
127 
128 namespace {
129 
130 struct DriverSuffix {
131  const char *Suffix;
132  const char *ModeFlag;
133 };
134 
135 } // namespace
136 
137 static const DriverSuffix *FindDriverSuffix(StringRef ProgName, size_t &Pos) {
138  // A list of known driver suffixes. Suffixes are compared against the
139  // program name in order. If there is a match, the frontend type is updated as
140  // necessary by applying the ModeFlag.
141  static const DriverSuffix DriverSuffixes[] = {
142  {"clang", nullptr},
143  {"clang++", "--driver-mode=g++"},
144  {"clang-c++", "--driver-mode=g++"},
145  {"clang-cc", nullptr},
146  {"clang-cpp", "--driver-mode=cpp"},
147  {"clang-g++", "--driver-mode=g++"},
148  {"clang-gcc", nullptr},
149  {"clang-cl", "--driver-mode=cl"},
150  {"cc", nullptr},
151  {"cpp", "--driver-mode=cpp"},
152  {"cl", "--driver-mode=cl"},
153  {"++", "--driver-mode=g++"},
154  };
155 
156  for (size_t i = 0; i < llvm::array_lengthof(DriverSuffixes); ++i) {
157  StringRef Suffix(DriverSuffixes[i].Suffix);
158  if (ProgName.endswith(Suffix)) {
159  Pos = ProgName.size() - Suffix.size();
160  return &DriverSuffixes[i];
161  }
162  }
163  return nullptr;
164 }
165 
166 /// Normalize the program name from argv[0] by stripping the file extension if
167 /// present and lower-casing the string on Windows.
168 static std::string normalizeProgramName(llvm::StringRef Argv0) {
169  std::string ProgName = llvm::sys::path::stem(Argv0);
170 #ifdef _WIN32
171  // Transform to lowercase for case insensitive file systems.
172  std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), ::tolower);
173 #endif
174  return ProgName;
175 }
176 
177 static const DriverSuffix *parseDriverSuffix(StringRef ProgName, size_t &Pos) {
178  // Try to infer frontend type and default target from the program name by
179  // comparing it against DriverSuffixes in order.
180 
181  // If there is a match, the function tries to identify a target as prefix.
182  // E.g. "x86_64-linux-clang" as interpreted as suffix "clang" with target
183  // prefix "x86_64-linux". If such a target prefix is found, it may be
184  // added via -target as implicit first argument.
185  const DriverSuffix *DS = FindDriverSuffix(ProgName, Pos);
186 
187  if (!DS) {
188  // Try again after stripping any trailing version number:
189  // clang++3.5 -> clang++
190  ProgName = ProgName.rtrim("0123456789.");
191  DS = FindDriverSuffix(ProgName, Pos);
192  }
193 
194  if (!DS) {
195  // Try again after stripping trailing -component.
196  // clang++-tot -> clang++
197  ProgName = ProgName.slice(0, ProgName.rfind('-'));
198  DS = FindDriverSuffix(ProgName, Pos);
199  }
200  return DS;
201 }
202 
205  std::string ProgName = normalizeProgramName(PN);
206  size_t SuffixPos;
207  const DriverSuffix *DS = parseDriverSuffix(ProgName, SuffixPos);
208  if (!DS)
209  return {};
210  size_t SuffixEnd = SuffixPos + strlen(DS->Suffix);
211 
212  size_t LastComponent = ProgName.rfind('-', SuffixPos);
213  if (LastComponent == std::string::npos)
214  return ParsedClangName(ProgName.substr(0, SuffixEnd), DS->ModeFlag);
215  std::string ModeSuffix = ProgName.substr(LastComponent + 1,
216  SuffixEnd - LastComponent - 1);
217 
218  // Infer target from the prefix.
219  StringRef Prefix(ProgName);
220  Prefix = Prefix.slice(0, LastComponent);
221  std::string IgnoredError;
222  bool IsRegistered = llvm::TargetRegistry::lookupTarget(Prefix, IgnoredError);
223  return ParsedClangName{Prefix, ModeSuffix, DS->ModeFlag, IsRegistered};
224 }
225 
227  // In universal driver terms, the arch name accepted by -arch isn't exactly
228  // the same as the ones that appear in the triple. Roughly speaking, this is
229  // an inverse of the darwin::getArchTypeForDarwinArchName() function, but the
230  // only interesting special case is powerpc.
231  switch (Triple.getArch()) {
232  case llvm::Triple::ppc:
233  return "ppc";
234  case llvm::Triple::ppc64:
235  return "ppc64";
236  case llvm::Triple::ppc64le:
237  return "ppc64le";
238  default:
239  return Triple.getArchName();
240  }
241 }
242 
243 std::string ToolChain::getInputFilename(const InputInfo &Input) const {
244  return Input.getFilename();
245 }
246 
247 bool ToolChain::IsUnwindTablesDefault(const ArgList &Args) const {
248  return false;
249 }
250 
251 Tool *ToolChain::getClang() const {
252  if (!Clang)
253  Clang.reset(new tools::Clang(*this));
254  return Clang.get();
255 }
256 
258  return new tools::ClangAs(*this);
259 }
260 
262  llvm_unreachable("Linking is not supported by this toolchain");
263 }
264 
265 Tool *ToolChain::getAssemble() const {
266  if (!Assemble)
267  Assemble.reset(buildAssembler());
268  return Assemble.get();
269 }
270 
271 Tool *ToolChain::getClangAs() const {
272  if (!Assemble)
273  Assemble.reset(new tools::ClangAs(*this));
274  return Assemble.get();
275 }
276 
277 Tool *ToolChain::getLink() const {
278  if (!Link)
279  Link.reset(buildLinker());
280  return Link.get();
281 }
282 
283 Tool *ToolChain::getOffloadBundler() const {
284  if (!OffloadBundler)
285  OffloadBundler.reset(new tools::OffloadBundler(*this));
286  return OffloadBundler.get();
287 }
288 
290  switch (AC) {
292  return getAssemble();
293 
295  return getLink();
296 
297  case Action::InputClass:
303  llvm_unreachable("Invalid tool kind.");
304 
313  return getClang();
314 
317  return getOffloadBundler();
318  }
319 
320  llvm_unreachable("Invalid tool kind.");
321 }
322 
323 static StringRef getArchNameForCompilerRTLib(const ToolChain &TC,
324  const ArgList &Args) {
325  const llvm::Triple &Triple = TC.getTriple();
326  bool IsWindows = Triple.isOSWindows();
327 
328  if (TC.getArch() == llvm::Triple::arm || TC.getArch() == llvm::Triple::armeb)
329  return (arm::getARMFloatABI(TC, Args) == arm::FloatABI::Hard && !IsWindows)
330  ? "armhf"
331  : "arm";
332 
333  // For historic reasons, Android library is using i686 instead of i386.
334  if (TC.getArch() == llvm::Triple::x86 && Triple.isAndroid())
335  return "i686";
336 
337  return llvm::Triple::getArchTypeName(TC.getArch());
338 }
339 
340 StringRef ToolChain::getOSLibName() const {
341  switch (Triple.getOS()) {
342  case llvm::Triple::FreeBSD:
343  return "freebsd";
344  case llvm::Triple::NetBSD:
345  return "netbsd";
346  case llvm::Triple::OpenBSD:
347  return "openbsd";
348  case llvm::Triple::Solaris:
349  return "sunos";
350  default:
351  return getOS();
352  }
353 }
354 
355 std::string ToolChain::getCompilerRTPath() const {
356  SmallString<128> Path(getDriver().ResourceDir);
357  if (Triple.isOSUnknown()) {
358  llvm::sys::path::append(Path, "lib");
359  } else {
360  llvm::sys::path::append(Path, "lib", getOSLibName());
361  }
362  return Path.str();
363 }
364 
365 std::string ToolChain::getCompilerRT(const ArgList &Args, StringRef Component,
366  bool Shared) const {
367  const llvm::Triple &TT = getTriple();
368  bool IsITANMSVCWindows =
369  TT.isWindowsMSVCEnvironment() || TT.isWindowsItaniumEnvironment();
370 
371  const char *Prefix = IsITANMSVCWindows ? "" : "lib";
372  const char *Suffix = Shared ? (Triple.isOSWindows() ? ".lib" : ".so")
373  : (IsITANMSVCWindows ? ".lib" : ".a");
374  if (Shared && Triple.isWindowsGNUEnvironment())
375  Suffix = ".dll.a";
376 
377  for (const auto &LibPath : getLibraryPaths()) {
378  SmallString<128> P(LibPath);
379  llvm::sys::path::append(P, Prefix + Twine("clang_rt.") + Component + Suffix);
380  if (getVFS().exists(P))
381  return P.str();
382  }
383 
384  StringRef Arch = getArchNameForCompilerRTLib(*this, Args);
385  const char *Env = TT.isAndroid() ? "-android" : "";
387  llvm::sys::path::append(Path, Prefix + Twine("clang_rt.") + Component + "-" +
388  Arch + Env + Suffix);
389  return Path.str();
390 }
391 
392 const char *ToolChain::getCompilerRTArgString(const llvm::opt::ArgList &Args,
393  StringRef Component,
394  bool Shared) const {
395  return Args.MakeArgString(getCompilerRT(Args, Component, Shared));
396 }
397 
399  SmallString<128> Path(getDriver().ResourceDir);
400  llvm::sys::path::append(Path, "lib", getOSLibName(),
401  llvm::Triple::getArchTypeName(getArch()));
402  return Path.str();
403 }
404 
405 bool ToolChain::needsProfileRT(const ArgList &Args) {
406  if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
407  false) ||
408  Args.hasArg(options::OPT_fprofile_generate) ||
409  Args.hasArg(options::OPT_fprofile_generate_EQ) ||
410  Args.hasArg(options::OPT_fprofile_instr_generate) ||
411  Args.hasArg(options::OPT_fprofile_instr_generate_EQ) ||
412  Args.hasArg(options::OPT_fcreate_profile) ||
413  Args.hasArg(options::OPT_coverage))
414  return true;
415 
416  return false;
417 }
418 
420  if (getDriver().ShouldUseClangCompiler(JA)) return getClang();
421  Action::ActionClass AC = JA.getKind();
423  return getClangAs();
424  return getTool(AC);
425 }
426 
427 std::string ToolChain::GetFilePath(const char *Name) const {
428  return D.GetFilePath(Name, *this);
429 }
430 
431 std::string ToolChain::GetProgramPath(const char *Name) const {
432  return D.GetProgramPath(Name, *this);
433 }
434 
435 std::string ToolChain::GetLinkerPath() const {
436  const Arg* A = Args.getLastArg(options::OPT_fuse_ld_EQ);
437  StringRef UseLinker = A ? A->getValue() : CLANG_DEFAULT_LINKER;
438 
439  if (llvm::sys::path::is_absolute(UseLinker)) {
440  // If we're passed what looks like an absolute path, don't attempt to
441  // second-guess that.
442  if (llvm::sys::fs::can_execute(UseLinker))
443  return UseLinker;
444  } else if (UseLinker.empty() || UseLinker == "ld") {
445  // If we're passed -fuse-ld= with no argument, or with the argument ld,
446  // then use whatever the default system linker is.
448  } else {
449  llvm::SmallString<8> LinkerName;
450  if (Triple.isOSDarwin())
451  LinkerName.append("ld64.");
452  else
453  LinkerName.append("ld.");
454  LinkerName.append(UseLinker);
455 
456  std::string LinkerPath(GetProgramPath(LinkerName.c_str()));
457  if (llvm::sys::fs::can_execute(LinkerPath))
458  return LinkerPath;
459  }
460 
461  if (A)
462  getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args);
463 
465 }
466 
468  return types::lookupTypeForExtension(Ext);
469 }
470 
472  return false;
473 }
474 
476  llvm::Triple HostTriple(LLVM_HOST_TRIPLE);
477  switch (HostTriple.getArch()) {
478  // The A32/T32/T16 instruction sets are not separate architectures in this
479  // context.
480  case llvm::Triple::arm:
481  case llvm::Triple::armeb:
482  case llvm::Triple::thumb:
483  case llvm::Triple::thumbeb:
484  return getArch() != llvm::Triple::arm && getArch() != llvm::Triple::thumb &&
485  getArch() != llvm::Triple::armeb && getArch() != llvm::Triple::thumbeb;
486  default:
487  return HostTriple.getArch() != getArch();
488  }
489 }
490 
492  return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
493  VersionTuple());
494 }
495 
496 llvm::ExceptionHandling
497 ToolChain::GetExceptionModel(const llvm::opt::ArgList &Args) const {
498  return llvm::ExceptionHandling::None;
499 }
500 
501 bool ToolChain::isThreadModelSupported(const StringRef Model) const {
502  if (Model == "single") {
503  // FIXME: 'single' is only supported on ARM and WebAssembly so far.
504  return Triple.getArch() == llvm::Triple::arm ||
505  Triple.getArch() == llvm::Triple::armeb ||
506  Triple.getArch() == llvm::Triple::thumb ||
507  Triple.getArch() == llvm::Triple::thumbeb ||
508  Triple.getArch() == llvm::Triple::wasm32 ||
509  Triple.getArch() == llvm::Triple::wasm64;
510  } else if (Model == "posix")
511  return true;
512 
513  return false;
514 }
515 
516 std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
517  types::ID InputType) const {
518  switch (getTriple().getArch()) {
519  default:
520  return getTripleString();
521 
522  case llvm::Triple::x86_64: {
523  llvm::Triple Triple = getTriple();
524  if (!Triple.isOSBinFormatMachO())
525  return getTripleString();
526 
527  if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
528  // x86_64h goes in the triple. Other -march options just use the
529  // vanilla triple we already have.
530  StringRef MArch = A->getValue();
531  if (MArch == "x86_64h")
532  Triple.setArchName(MArch);
533  }
534  return Triple.getTriple();
535  }
536  case llvm::Triple::aarch64: {
537  llvm::Triple Triple = getTriple();
538  if (!Triple.isOSBinFormatMachO())
539  return getTripleString();
540 
541  // FIXME: older versions of ld64 expect the "arm64" component in the actual
542  // triple string and query it to determine whether an LTO file can be
543  // handled. Remove this when we don't care any more.
544  Triple.setArchName("arm64");
545  return Triple.getTriple();
546  }
547  case llvm::Triple::arm:
548  case llvm::Triple::armeb:
549  case llvm::Triple::thumb:
550  case llvm::Triple::thumbeb: {
551  // FIXME: Factor into subclasses.
552  llvm::Triple Triple = getTriple();
553  bool IsBigEndian = getTriple().getArch() == llvm::Triple::armeb ||
554  getTriple().getArch() == llvm::Triple::thumbeb;
555 
556  // Handle pseudo-target flags '-mlittle-endian'/'-EL' and
557  // '-mbig-endian'/'-EB'.
558  if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
559  options::OPT_mbig_endian)) {
560  IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
561  }
562 
563  // Thumb2 is the default for V7 on Darwin.
564  //
565  // FIXME: Thumb should just be another -target-feaure, not in the triple.
566  StringRef MCPU, MArch;
567  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
568  MCPU = A->getValue();
569  if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
570  MArch = A->getValue();
571  std::string CPU =
572  Triple.isOSBinFormatMachO()
573  ? tools::arm::getARMCPUForMArch(MArch, Triple).str()
574  : tools::arm::getARMTargetCPU(MCPU, MArch, Triple);
575  StringRef Suffix =
576  tools::arm::getLLVMArchSuffixForARM(CPU, MArch, Triple);
577  bool IsMProfile = ARM::parseArchProfile(Suffix) == ARM::ProfileKind::M;
578  bool ThumbDefault = IsMProfile || (ARM::parseArchVersion(Suffix) == 7 &&
579  getTriple().isOSBinFormatMachO());
580  // FIXME: this is invalid for WindowsCE
581  if (getTriple().isOSWindows())
582  ThumbDefault = true;
583  std::string ArchName;
584  if (IsBigEndian)
585  ArchName = "armeb";
586  else
587  ArchName = "arm";
588 
589  // Check if ARM ISA was explicitly selected (using -mno-thumb or -marm) for
590  // M-Class CPUs/architecture variants, which is not supported.
591  bool ARMModeRequested = !Args.hasFlag(options::OPT_mthumb,
592  options::OPT_mno_thumb, ThumbDefault);
593  if (IsMProfile && ARMModeRequested) {
594  if (!MCPU.empty())
595  getDriver().Diag(diag::err_cpu_unsupported_isa) << CPU << "ARM";
596  else
597  getDriver().Diag(diag::err_arch_unsupported_isa)
598  << tools::arm::getARMArch(MArch, getTriple()) << "ARM";
599  }
600 
601  // Check to see if an explicit choice to use thumb has been made via
602  // -mthumb. For assembler files we must check for -mthumb in the options
603  // passed to the assember via -Wa or -Xassembler.
604  bool IsThumb = false;
605  if (InputType != types::TY_PP_Asm)
606  IsThumb = Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb,
607  ThumbDefault);
608  else {
609  // Ideally we would check for these flags in
610  // CollectArgsForIntegratedAssembler but we can't change the ArchName at
611  // that point. There is no assembler equivalent of -mno-thumb, -marm, or
612  // -mno-arm.
613  for (const auto *A :
614  Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
615  for (StringRef Value : A->getValues()) {
616  if (Value == "-mthumb")
617  IsThumb = true;
618  }
619  }
620  }
621  // Assembly files should start in ARM mode, unless arch is M-profile, or
622  // -mthumb has been passed explicitly to the assembler. Windows is always
623  // thumb.
624  if (IsThumb || IsMProfile || getTriple().isOSWindows()) {
625  if (IsBigEndian)
626  ArchName = "thumbeb";
627  else
628  ArchName = "thumb";
629  }
630  Triple.setArchName(ArchName + Suffix.str());
631 
632  return Triple.getTriple();
633  }
634  }
635 }
636 
637 std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
638  types::ID InputType) const {
639  return ComputeLLVMTriple(Args, InputType);
640 }
641 
642 void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
643  ArgStringList &CC1Args) const {
644  // Each toolchain should provide the appropriate include flags.
645 }
646 
648  const ArgList &DriverArgs, ArgStringList &CC1Args,
649  Action::OffloadKind DeviceOffloadKind) const {}
650 
651 void ToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {}
652 
653 void ToolChain::addProfileRTLibs(const llvm::opt::ArgList &Args,
654  llvm::opt::ArgStringList &CmdArgs) const {
655  if (!needsProfileRT(Args)) return;
656 
657  CmdArgs.push_back(getCompilerRTArgString(Args, "profile"));
658 }
659 
661  const ArgList &Args) const {
662  const Arg* A = Args.getLastArg(options::OPT_rtlib_EQ);
663  StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_RTLIB;
664 
665  // Only use "platform" in tests to override CLANG_DEFAULT_RTLIB!
666  if (LibName == "compiler-rt")
668  else if (LibName == "libgcc")
669  return ToolChain::RLT_Libgcc;
670  else if (LibName == "platform")
671  return GetDefaultRuntimeLibType();
672 
673  if (A)
674  getDriver().Diag(diag::err_drv_invalid_rtlib_name) << A->getAsString(Args);
675 
676  return GetDefaultRuntimeLibType();
677 }
678 
680  const Arg *A = Args.getLastArg(options::OPT_stdlib_EQ);
681  StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_CXX_STDLIB;
682 
683  // Only use "platform" in tests to override CLANG_DEFAULT_CXX_STDLIB!
684  if (LibName == "libc++")
685  return ToolChain::CST_Libcxx;
686  else if (LibName == "libstdc++")
688  else if (LibName == "platform")
689  return GetDefaultCXXStdlibType();
690 
691  if (A)
692  getDriver().Diag(diag::err_drv_invalid_stdlib_name) << A->getAsString(Args);
693 
694  return GetDefaultCXXStdlibType();
695 }
696 
697 /// Utility function to add a system include directory to CC1 arguments.
698 /*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
699  ArgStringList &CC1Args,
700  const Twine &Path) {
701  CC1Args.push_back("-internal-isystem");
702  CC1Args.push_back(DriverArgs.MakeArgString(Path));
703 }
704 
705 /// Utility function to add a system include directory with extern "C"
706 /// semantics to CC1 arguments.
707 ///
708 /// Note that this should be used rarely, and only for directories that
709 /// historically and for legacy reasons are treated as having implicit extern
710 /// "C" semantics. These semantics are *ignored* by and large today, but its
711 /// important to preserve the preprocessor changes resulting from the
712 /// classification.
713 /*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
714  ArgStringList &CC1Args,
715  const Twine &Path) {
716  CC1Args.push_back("-internal-externc-isystem");
717  CC1Args.push_back(DriverArgs.MakeArgString(Path));
718 }
719 
720 void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
721  ArgStringList &CC1Args,
722  const Twine &Path) {
723  if (llvm::sys::fs::exists(Path))
724  addExternCSystemInclude(DriverArgs, CC1Args, Path);
725 }
726 
727 /// Utility function to add a list of system include directories to CC1.
728 /*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
729  ArgStringList &CC1Args,
730  ArrayRef<StringRef> Paths) {
731  for (const auto Path : Paths) {
732  CC1Args.push_back("-internal-isystem");
733  CC1Args.push_back(DriverArgs.MakeArgString(Path));
734  }
735 }
736 
737 void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
738  ArgStringList &CC1Args) const {
739  // Header search paths should be handled by each of the subclasses.
740  // Historically, they have not been, and instead have been handled inside of
741  // the CC1-layer frontend. As the logic is hoisted out, this generic function
742  // will slowly stop being called.
743  //
744  // While it is being called, replicate a bit of a hack to propagate the
745  // '-stdlib=' flag down to CC1 so that it can in turn customize the C++
746  // header search paths with it. Once all systems are overriding this
747  // function, the CC1 flag and this line can be removed.
748  DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
749 }
750 
751 bool ToolChain::ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const {
752  return getDriver().CCCIsCXX() &&
753  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
754  options::OPT_nostdlibxx);
755 }
756 
757 void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
758  ArgStringList &CmdArgs) const {
759  assert(!Args.hasArg(options::OPT_nostdlibxx) &&
760  "should not have called this");
762 
763  switch (Type) {
765  CmdArgs.push_back("-lc++");
766  break;
767 
769  CmdArgs.push_back("-lstdc++");
770  break;
771  }
772 }
773 
774 void ToolChain::AddFilePathLibArgs(const ArgList &Args,
775  ArgStringList &CmdArgs) const {
776  for (const auto &LibPath : getLibraryPaths())
777  if(LibPath.length() > 0)
778  CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
779 
780  for (const auto &LibPath : getFilePaths())
781  if(LibPath.length() > 0)
782  CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
783 }
784 
785 void ToolChain::AddCCKextLibArgs(const ArgList &Args,
786  ArgStringList &CmdArgs) const {
787  CmdArgs.push_back("-lcc_kext");
788 }
789 
791  ArgStringList &CmdArgs) const {
792  // Do not check for -fno-fast-math or -fno-unsafe-math when -Ofast passed
793  // (to keep the linker options consistent with gcc and clang itself).
794  if (!isOptimizationLevelFast(Args)) {
795  // Check if -ffast-math or -funsafe-math.
796  Arg *A =
797  Args.getLastArg(options::OPT_ffast_math, options::OPT_fno_fast_math,
798  options::OPT_funsafe_math_optimizations,
799  options::OPT_fno_unsafe_math_optimizations);
800 
801  if (!A || A->getOption().getID() == options::OPT_fno_fast_math ||
802  A->getOption().getID() == options::OPT_fno_unsafe_math_optimizations)
803  return false;
804  }
805  // If crtfastmath.o exists add it to the arguments.
806  std::string Path = GetFilePath("crtfastmath.o");
807  if (Path == "crtfastmath.o") // Not found.
808  return false;
809 
810  CmdArgs.push_back(Args.MakeArgString(Path));
811  return true;
812 }
813 
815  // Return sanitizers which don't require runtime support and are not
816  // platform dependent.
817 
818  using namespace SanitizerKind;
819 
820  SanitizerMask Res = (Undefined & ~Vptr & ~Function) | (CFI & ~CFIICall) |
821  CFICastStrict | UnsignedIntegerOverflow |
822  ImplicitConversion | Nullability | LocalBounds;
823  if (getTriple().getArch() == llvm::Triple::x86 ||
824  getTriple().getArch() == llvm::Triple::x86_64 ||
825  getTriple().getArch() == llvm::Triple::arm ||
826  getTriple().getArch() == llvm::Triple::aarch64 ||
827  getTriple().getArch() == llvm::Triple::wasm32 ||
828  getTriple().getArch() == llvm::Triple::wasm64)
829  Res |= CFIICall;
830  if (getTriple().getArch() == llvm::Triple::x86_64 ||
831  getTriple().getArch() == llvm::Triple::aarch64)
832  Res |= ShadowCallStack;
833  return Res;
834 }
835 
836 void ToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs,
837  ArgStringList &CC1Args) const {}
838 
839 void ToolChain::AddIAMCUIncludeArgs(const ArgList &DriverArgs,
840  ArgStringList &CC1Args) const {}
841 
842 static VersionTuple separateMSVCFullVersion(unsigned Version) {
843  if (Version < 100)
844  return VersionTuple(Version);
845 
846  if (Version < 10000)
847  return VersionTuple(Version / 100, Version % 100);
848 
849  unsigned Build = 0, Factor = 1;
850  for (; Version > 10000; Version = Version / 10, Factor = Factor * 10)
851  Build = Build + (Version % 10) * Factor;
852  return VersionTuple(Version / 100, Version % 100, Build);
853 }
854 
855 VersionTuple
857  const llvm::opt::ArgList &Args) const {
858  const Arg *MSCVersion = Args.getLastArg(options::OPT_fmsc_version);
859  const Arg *MSCompatibilityVersion =
860  Args.getLastArg(options::OPT_fms_compatibility_version);
861 
862  if (MSCVersion && MSCompatibilityVersion) {
863  if (D)
864  D->Diag(diag::err_drv_argument_not_allowed_with)
865  << MSCVersion->getAsString(Args)
866  << MSCompatibilityVersion->getAsString(Args);
867  return VersionTuple();
868  }
869 
870  if (MSCompatibilityVersion) {
871  VersionTuple MSVT;
872  if (MSVT.tryParse(MSCompatibilityVersion->getValue())) {
873  if (D)
874  D->Diag(diag::err_drv_invalid_value)
875  << MSCompatibilityVersion->getAsString(Args)
876  << MSCompatibilityVersion->getValue();
877  } else {
878  return MSVT;
879  }
880  }
881 
882  if (MSCVersion) {
883  unsigned Version = 0;
884  if (StringRef(MSCVersion->getValue()).getAsInteger(10, Version)) {
885  if (D)
886  D->Diag(diag::err_drv_invalid_value)
887  << MSCVersion->getAsString(Args) << MSCVersion->getValue();
888  } else {
889  return separateMSVCFullVersion(Version);
890  }
891  }
892 
893  return VersionTuple();
894 }
895 
896 llvm::opt::DerivedArgList *ToolChain::TranslateOpenMPTargetArgs(
897  const llvm::opt::DerivedArgList &Args, bool SameTripleAsHost,
898  SmallVectorImpl<llvm::opt::Arg *> &AllocatedArgs) const {
899  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
900  const OptTable &Opts = getDriver().getOpts();
901  bool Modified = false;
902 
903  // Handle -Xopenmp-target flags
904  for (auto *A : Args) {
905  // Exclude flags which may only apply to the host toolchain.
906  // Do not exclude flags when the host triple (AuxTriple)
907  // matches the current toolchain triple. If it is not present
908  // at all, target and host share a toolchain.
909  if (A->getOption().matches(options::OPT_m_Group)) {
910  if (SameTripleAsHost)
911  DAL->append(A);
912  else
913  Modified = true;
914  continue;
915  }
916 
917  unsigned Index;
918  unsigned Prev;
919  bool XOpenMPTargetNoTriple =
920  A->getOption().matches(options::OPT_Xopenmp_target);
921 
922  if (A->getOption().matches(options::OPT_Xopenmp_target_EQ)) {
923  // Passing device args: -Xopenmp-target=<triple> -opt=val.
924  if (A->getValue(0) == getTripleString())
925  Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
926  else
927  continue;
928  } else if (XOpenMPTargetNoTriple) {
929  // Passing device args: -Xopenmp-target -opt=val.
930  Index = Args.getBaseArgs().MakeIndex(A->getValue(0));
931  } else {
932  DAL->append(A);
933  continue;
934  }
935 
936  // Parse the argument to -Xopenmp-target.
937  Prev = Index;
938  std::unique_ptr<Arg> XOpenMPTargetArg(Opts.ParseOneArg(Args, Index));
939  if (!XOpenMPTargetArg || Index > Prev + 1) {
940  getDriver().Diag(diag::err_drv_invalid_Xopenmp_target_with_args)
941  << A->getAsString(Args);
942  continue;
943  }
944  if (XOpenMPTargetNoTriple && XOpenMPTargetArg &&
945  Args.getAllArgValues(options::OPT_fopenmp_targets_EQ).size() != 1) {
946  getDriver().Diag(diag::err_drv_Xopenmp_target_missing_triple);
947  continue;
948  }
949  XOpenMPTargetArg->setBaseArg(A);
950  A = XOpenMPTargetArg.release();
951  AllocatedArgs.push_back(A);
952  DAL->append(A);
953  Modified = true;
954  }
955 
956  if (Modified)
957  return DAL;
958 
959  delete DAL;
960  return nullptr;
961 }
virtual void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const
Add warning options that need to be passed to cc1 for this target.
Definition: ToolChain.cpp:651
static void addExternCSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory with extern "C" semantics to CC1 arguments...
Definition: ToolChain.cpp:713
void setTripleEnvironment(llvm::Triple::EnvironmentType Env)
Definition: ToolChain.cpp:94
virtual std::string ComputeLLVMTriple(const llvm::opt::ArgList &Args, types::ID InputType=types::TY_INVALID) const
ComputeLLVMTriple - Return the LLVM target triple to use, after taking command line arguments into ac...
Definition: ToolChain.cpp:516
static void addExternCSystemIncludeIfExists(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Definition: ToolChain.cpp:720
virtual void AddCCKextLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCCKextLibArgs - Add the system specific linker arguments to use for kernel extensions (Darwin-spec...
Definition: ToolChain.cpp:785
virtual const char * getDefaultLinker() const
GetDefaultLinker - Get the default linker to use.
Definition: ToolChain.h:352
DominatorTree GraphTraits specialization so the DominatorTree can be iterable by generic graph iterat...
Definition: Dominators.h:30
virtual ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const
getDefaultObjCRuntime - Return the default Objective-C runtime for this platform. ...
Definition: ToolChain.cpp:491
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:392
StringRef P
Defines types useful for describing an Objective-C runtime.
The base class of the type hierarchy.
Definition: Type.h:1415
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:122
virtual void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: ToolChain.cpp:737
StringRef getOS() const
Definition: ToolChain.h:203
virtual bool isThreadModelSupported(const StringRef Model) const
isThreadModelSupported() - Does this target support a thread model?
Definition: ToolChain.cpp:501
std::string getTargetTriple() const
Definition: Driver.h:311
virtual bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const
IsUnwindTablesDefault - Does this tool chain use -funwind-tables by default.
Definition: ToolChain.cpp:247
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:109
&#39;gcc&#39; is the Objective-C runtime shipped with GCC, implementing a fragile Objective-C ABI ...
Definition: ObjCRuntime.h:53
static ParsedClangName getTargetAndModeFromProgramName(StringRef ProgName)
Return any implicit target and/or mode flag for an invocation of the compiler driver as ProgName...
Definition: ToolChain.cpp:204
static VersionTuple separateMSVCFullVersion(unsigned Version)
Definition: ToolChain.cpp:842
virtual void addProfileRTLibs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
addProfileRTLibs - When -fprofile-instr-profile is specified, try to pass a suitable profile runtime ...
Definition: ToolChain.cpp:653
std::string GetLinkerPath() const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name...
Definition: ToolChain.cpp:435
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
Clang integrated assembler tool.
Definition: Clang.h:115
Defines the clang::SanitizerKind enum.
const std::string getARMArch(llvm::StringRef Arch, const llvm::Triple &Triple)
const char * getFilename() const
Definition: InputInfo.h:84
virtual void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add the clang cc1 arguments for system include paths.
Definition: ToolChain.cpp:642
static StringRef getArchNameForCompilerRTLib(const ToolChain &TC, const ArgList &Args)
Definition: ToolChain.cpp:323
StringRef getOSLibName() const
Definition: ToolChain.cpp:340
static bool needsProfileRT(const llvm::opt::ArgList &Args)
needsProfileRT - returns true if instrumentation profile is on.
Definition: ToolChain.cpp:405
std::string getTripleString() const
Definition: ToolChain.h:209
StringRef getARMCPUForMArch(llvm::StringRef Arch, const llvm::Triple &Triple)
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:23
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:427
bool isOptimizationLevelFast(const llvm::opt::ArgList &Args)
path_list & getFilePaths()
Definition: ToolChain.h:222
virtual bool AddFastMathRuntimeIfAvailable(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFastMathRuntimeIfAvailable - If a runtime library exists that sets global flags for unsafe floatin...
Definition: ToolChain.cpp:790
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:58
ToolChain(const Driver &D, const llvm::Triple &T, const llvm::opt::ArgList &Args)
Definition: ToolChain.cpp:73
virtual bool IsIntegratedAssemblerDefault() const
IsIntegratedAssemblerDefault - Does this tool chain enable -integrated-as by default.
Definition: ToolChain.h:322
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:300
virtual bool useRelaxRelocations() const
Check whether to enable x86 relax relocations by default.
Definition: ToolChain.cpp:112
virtual bool useIntegratedAs() const
Check if the toolchain should use the integrated assembler.
Definition: ToolChain.cpp:106
ActionClass getKind() const
Definition: Action.h:140
virtual VersionTuple computeMSVCVersion(const Driver *D, const llvm::opt::ArgList &Args) const
On Windows, returns the MSVC compatibility version.
Definition: ToolChain.cpp:856
static void addSystemIncludes(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, ArrayRef< StringRef > Paths)
Utility function to add a list of system include directories to CC1.
Definition: ToolChain.cpp:728
virtual llvm::ExceptionHandling GetExceptionModel(const llvm::opt::ArgList &Args) const
GetExceptionModel - Return the tool chain exception model.
Definition: ToolChain.cpp:497
static llvm::opt::Arg * GetRTTIArgument(const ArgList &Args)
Definition: ToolChain.cpp:53
virtual Tool * buildLinker() const
Definition: ToolChain.cpp:261
static const DriverSuffix * parseDriverSuffix(StringRef ProgName, size_t &Pos)
Definition: ToolChain.cpp:177
virtual llvm::opt::DerivedArgList * TranslateOpenMPTargetArgs(const llvm::opt::DerivedArgList &Args, bool SameTripleAsHost, SmallVectorImpl< llvm::opt::Arg *> &AllocatedArgs) const
TranslateOpenMPTargetArgs - Create a new derived argument list for that contains the OpenMP target sp...
Definition: ToolChain.cpp:896
virtual types::ID LookupTypeForExtension(StringRef Ext) const
LookupTypeForExtension - Return the default language type to use for the given extension.
Definition: ToolChain.cpp:467
static const DriverSuffix * FindDriverSuffix(StringRef ProgName, size_t &Pos)
Definition: ToolChain.cpp:137
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:365
&#39;gnustep&#39; is the modern non-fragile GNUstep runtime.
Definition: ObjCRuntime.h:56
virtual CXXStdlibType GetDefaultCXXStdlibType() const
Definition: ToolChain.h:359
path_list & getLibraryPaths()
Definition: ToolChain.h:219
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:200
virtual void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add arguments to use system-specific CUDA includes.
Definition: ToolChain.cpp:836
virtual std::string getInputFilename(const InputInfo &Input) const
Some toolchains need to modify the file name, for example to replace the extension for object files w...
Definition: ToolChain.cpp:243
void AddFilePathLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFilePathLibArgs - Add each thing in getFilePaths() as a "-L" option.
Definition: ToolChain.cpp:774
Offload bundler tool.
Definition: Clang.h:134
const Driver & getDriver() const
Definition: ToolChain.h:184
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:173
static void addSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory to CC1 arguments.
Definition: ToolChain.cpp:698
virtual bool HasNativeLLVMSupport() const
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: ToolChain.cpp:471
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:660
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:102
virtual Tool * buildAssembler() const
Definition: ToolChain.cpp:257
Helper structure used to pass information extracted from clang executable name such as i686-linux-and...
Definition: ToolChain.h:60
std::string getARMTargetCPU(StringRef CPU, llvm::StringRef Arch, const llvm::Triple &Triple)
bool ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const
Returns if the C++ standard library should be linked in.
Definition: ToolChain.cpp:751
Dataflow Directional Tag Classes.
virtual std::string ComputeEffectiveClangTriple(const llvm::opt::ArgList &Args, types::ID InputType=types::TY_INVALID) const
ComputeEffectiveClangTriple - Return the Clang triple to use for this target, which may take into acc...
Definition: ToolChain.cpp:637
Clang compiler tool.
Definition: Clang.h:29
static ToolChain::RTTIMode CalculateRTTIMode(const ArgList &Args, const llvm::Triple &Triple, const Arg *CachedRTTIArg)
Definition: ToolChain.cpp:58
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:28
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:116
static std::string normalizeProgramName(llvm::StringRef Argv0)
Normalize the program name from argv[0] by stripping the file extension if present and lower-casing t...
Definition: ToolChain.cpp:168
uint64_t SanitizerMask
Definition: Sanitizers.h:26
StringRef getDefaultUniversalArchName() const
Provide the default architecture name (as expected by -arch) for this toolchain.
Definition: ToolChain.cpp:226
const llvm::Triple & getTriple() const
Definition: ToolChain.h:186
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:814
ID lookupTypeForExtension(llvm::StringRef Ext)
lookupTypeForExtension - Lookup the type to use for the file extension Ext.
Definition: Types.cpp:195
std::string getArchSpecificLibPath() const
Definition: ToolChain.cpp:398
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:289
virtual std::string getCompilerRTPath() const
Definition: ToolChain.cpp:355
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:431
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:296
virtual bool isCrossCompiling() const
Returns true if the toolchain is targeting a non-native architecture.
Definition: ToolChain.cpp:475
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:679
virtual Tool * SelectTool(const JobAction &JA) const
Choose a tool to use to handle the action JA.
Definition: ToolChain.cpp:419
virtual void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add arguments to use MCU GCC toolchain includes.
Definition: ToolChain.cpp:839
StringRef getLLVMArchSuffixForARM(llvm::StringRef CPU, llvm::StringRef Arch, const llvm::Triple &Triple)
virtual void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, Action::OffloadKind DeviceOffloadKind) const
Add options that need to be passed to cc1 for this target.
Definition: ToolChain.cpp:647
virtual RuntimeLibType GetDefaultRuntimeLibType() const
GetDefaultRuntimeLibType - Get the default runtime library variant to use.
Definition: ToolChain.h:355
virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: ToolChain.cpp:757
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:87
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:132