clang  8.0.0svn
ToolChain.cpp
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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 (needsGCovInstrumentation(Args) ||
407  Args.hasArg(options::OPT_fprofile_generate) ||
408  Args.hasArg(options::OPT_fprofile_generate_EQ) ||
409  Args.hasArg(options::OPT_fprofile_instr_generate) ||
410  Args.hasArg(options::OPT_fprofile_instr_generate_EQ) ||
411  Args.hasArg(options::OPT_fcreate_profile))
412  return true;
413 
414  return false;
415 }
416 
417 bool ToolChain::needsGCovInstrumentation(const llvm::opt::ArgList &Args) {
418  return Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
419  false) ||
420  Args.hasArg(options::OPT_coverage);
421 }
422 
424  if (getDriver().ShouldUseClangCompiler(JA)) return getClang();
425  Action::ActionClass AC = JA.getKind();
427  return getClangAs();
428  return getTool(AC);
429 }
430 
431 std::string ToolChain::GetFilePath(const char *Name) const {
432  return D.GetFilePath(Name, *this);
433 }
434 
435 std::string ToolChain::GetProgramPath(const char *Name) const {
436  return D.GetProgramPath(Name, *this);
437 }
438 
439 std::string ToolChain::GetLinkerPath() const {
440  const Arg* A = Args.getLastArg(options::OPT_fuse_ld_EQ);
441  StringRef UseLinker = A ? A->getValue() : CLANG_DEFAULT_LINKER;
442 
443  if (llvm::sys::path::is_absolute(UseLinker)) {
444  // If we're passed what looks like an absolute path, don't attempt to
445  // second-guess that.
446  if (llvm::sys::fs::can_execute(UseLinker))
447  return UseLinker;
448  } else if (UseLinker.empty() || UseLinker == "ld") {
449  // If we're passed -fuse-ld= with no argument, or with the argument ld,
450  // then use whatever the default system linker is.
452  } else {
453  llvm::SmallString<8> LinkerName;
454  if (Triple.isOSDarwin())
455  LinkerName.append("ld64.");
456  else
457  LinkerName.append("ld.");
458  LinkerName.append(UseLinker);
459 
460  std::string LinkerPath(GetProgramPath(LinkerName.c_str()));
461  if (llvm::sys::fs::can_execute(LinkerPath))
462  return LinkerPath;
463  }
464 
465  if (A)
466  getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args);
467 
469 }
470 
472  return types::lookupTypeForExtension(Ext);
473 }
474 
476  return false;
477 }
478 
480  llvm::Triple HostTriple(LLVM_HOST_TRIPLE);
481  switch (HostTriple.getArch()) {
482  // The A32/T32/T16 instruction sets are not separate architectures in this
483  // context.
484  case llvm::Triple::arm:
485  case llvm::Triple::armeb:
486  case llvm::Triple::thumb:
487  case llvm::Triple::thumbeb:
488  return getArch() != llvm::Triple::arm && getArch() != llvm::Triple::thumb &&
489  getArch() != llvm::Triple::armeb && getArch() != llvm::Triple::thumbeb;
490  default:
491  return HostTriple.getArch() != getArch();
492  }
493 }
494 
496  return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
497  VersionTuple());
498 }
499 
500 llvm::ExceptionHandling
501 ToolChain::GetExceptionModel(const llvm::opt::ArgList &Args) const {
503 }
504 
505 bool ToolChain::isThreadModelSupported(const StringRef Model) const {
506  if (Model == "single") {
507  // FIXME: 'single' is only supported on ARM and WebAssembly so far.
508  return Triple.getArch() == llvm::Triple::arm ||
509  Triple.getArch() == llvm::Triple::armeb ||
510  Triple.getArch() == llvm::Triple::thumb ||
511  Triple.getArch() == llvm::Triple::thumbeb ||
512  Triple.getArch() == llvm::Triple::wasm32 ||
513  Triple.getArch() == llvm::Triple::wasm64;
514  } else if (Model == "posix")
515  return true;
516 
517  return false;
518 }
519 
520 std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
521  types::ID InputType) const {
522  switch (getTriple().getArch()) {
523  default:
524  return getTripleString();
525 
526  case llvm::Triple::x86_64: {
527  llvm::Triple Triple = getTriple();
528  if (!Triple.isOSBinFormatMachO())
529  return getTripleString();
530 
531  if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
532  // x86_64h goes in the triple. Other -march options just use the
533  // vanilla triple we already have.
534  StringRef MArch = A->getValue();
535  if (MArch == "x86_64h")
536  Triple.setArchName(MArch);
537  }
538  return Triple.getTriple();
539  }
540  case llvm::Triple::aarch64: {
541  llvm::Triple Triple = getTriple();
542  if (!Triple.isOSBinFormatMachO())
543  return getTripleString();
544 
545  // FIXME: older versions of ld64 expect the "arm64" component in the actual
546  // triple string and query it to determine whether an LTO file can be
547  // handled. Remove this when we don't care any more.
548  Triple.setArchName("arm64");
549  return Triple.getTriple();
550  }
551  case llvm::Triple::arm:
552  case llvm::Triple::armeb:
553  case llvm::Triple::thumb:
554  case llvm::Triple::thumbeb: {
555  // FIXME: Factor into subclasses.
556  llvm::Triple Triple = getTriple();
557  bool IsBigEndian = getTriple().getArch() == llvm::Triple::armeb ||
558  getTriple().getArch() == llvm::Triple::thumbeb;
559 
560  // Handle pseudo-target flags '-mlittle-endian'/'-EL' and
561  // '-mbig-endian'/'-EB'.
562  if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
563  options::OPT_mbig_endian)) {
564  IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
565  }
566 
567  // Thumb2 is the default for V7 on Darwin.
568  //
569  // FIXME: Thumb should just be another -target-feaure, not in the triple.
570  StringRef MCPU, MArch;
571  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
572  MCPU = A->getValue();
573  if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
574  MArch = A->getValue();
575  std::string CPU =
576  Triple.isOSBinFormatMachO()
577  ? tools::arm::getARMCPUForMArch(MArch, Triple).str()
578  : tools::arm::getARMTargetCPU(MCPU, MArch, Triple);
579  StringRef Suffix =
580  tools::arm::getLLVMArchSuffixForARM(CPU, MArch, Triple);
581  bool IsMProfile = ARM::parseArchProfile(Suffix) == ARM::ProfileKind::M;
582  bool ThumbDefault = IsMProfile || (ARM::parseArchVersion(Suffix) == 7 &&
583  getTriple().isOSBinFormatMachO());
584  // FIXME: this is invalid for WindowsCE
585  if (getTriple().isOSWindows())
586  ThumbDefault = true;
587  std::string ArchName;
588  if (IsBigEndian)
589  ArchName = "armeb";
590  else
591  ArchName = "arm";
592 
593  // Check if ARM ISA was explicitly selected (using -mno-thumb or -marm) for
594  // M-Class CPUs/architecture variants, which is not supported.
595  bool ARMModeRequested = !Args.hasFlag(options::OPT_mthumb,
596  options::OPT_mno_thumb, ThumbDefault);
597  if (IsMProfile && ARMModeRequested) {
598  if (!MCPU.empty())
599  getDriver().Diag(diag::err_cpu_unsupported_isa) << CPU << "ARM";
600  else
601  getDriver().Diag(diag::err_arch_unsupported_isa)
602  << tools::arm::getARMArch(MArch, getTriple()) << "ARM";
603  }
604 
605  // Check to see if an explicit choice to use thumb has been made via
606  // -mthumb. For assembler files we must check for -mthumb in the options
607  // passed to the assembler via -Wa or -Xassembler.
608  bool IsThumb = false;
609  if (InputType != types::TY_PP_Asm)
610  IsThumb = Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb,
611  ThumbDefault);
612  else {
613  // Ideally we would check for these flags in
614  // CollectArgsForIntegratedAssembler but we can't change the ArchName at
615  // that point. There is no assembler equivalent of -mno-thumb, -marm, or
616  // -mno-arm.
617  for (const auto *A :
618  Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
619  for (StringRef Value : A->getValues()) {
620  if (Value == "-mthumb")
621  IsThumb = true;
622  }
623  }
624  }
625  // Assembly files should start in ARM mode, unless arch is M-profile, or
626  // -mthumb has been passed explicitly to the assembler. Windows is always
627  // thumb.
628  if (IsThumb || IsMProfile || getTriple().isOSWindows()) {
629  if (IsBigEndian)
630  ArchName = "thumbeb";
631  else
632  ArchName = "thumb";
633  }
634  Triple.setArchName(ArchName + Suffix.str());
635 
636  return Triple.getTriple();
637  }
638  }
639 }
640 
641 std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
642  types::ID InputType) const {
643  return ComputeLLVMTriple(Args, InputType);
644 }
645 
646 void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
647  ArgStringList &CC1Args) const {
648  // Each toolchain should provide the appropriate include flags.
649 }
650 
652  const ArgList &DriverArgs, ArgStringList &CC1Args,
653  Action::OffloadKind DeviceOffloadKind) const {}
654 
655 void ToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {}
656 
657 void ToolChain::addProfileRTLibs(const llvm::opt::ArgList &Args,
658  llvm::opt::ArgStringList &CmdArgs) const {
659  if (!needsProfileRT(Args)) return;
660 
661  CmdArgs.push_back(getCompilerRTArgString(Args, "profile"));
662 }
663 
665  const ArgList &Args) const {
666  const Arg* A = Args.getLastArg(options::OPT_rtlib_EQ);
667  StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_RTLIB;
668 
669  // Only use "platform" in tests to override CLANG_DEFAULT_RTLIB!
670  if (LibName == "compiler-rt")
672  else if (LibName == "libgcc")
673  return ToolChain::RLT_Libgcc;
674  else if (LibName == "platform")
675  return GetDefaultRuntimeLibType();
676 
677  if (A)
678  getDriver().Diag(diag::err_drv_invalid_rtlib_name) << A->getAsString(Args);
679 
680  return GetDefaultRuntimeLibType();
681 }
682 
684  const Arg *A = Args.getLastArg(options::OPT_stdlib_EQ);
685  StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_CXX_STDLIB;
686 
687  // Only use "platform" in tests to override CLANG_DEFAULT_CXX_STDLIB!
688  if (LibName == "libc++")
689  return ToolChain::CST_Libcxx;
690  else if (LibName == "libstdc++")
692  else if (LibName == "platform")
693  return GetDefaultCXXStdlibType();
694 
695  if (A)
696  getDriver().Diag(diag::err_drv_invalid_stdlib_name) << A->getAsString(Args);
697 
698  return GetDefaultCXXStdlibType();
699 }
700 
701 /// Utility function to add a system include directory to CC1 arguments.
702 /*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
703  ArgStringList &CC1Args,
704  const Twine &Path) {
705  CC1Args.push_back("-internal-isystem");
706  CC1Args.push_back(DriverArgs.MakeArgString(Path));
707 }
708 
709 /// Utility function to add a system include directory with extern "C"
710 /// semantics to CC1 arguments.
711 ///
712 /// Note that this should be used rarely, and only for directories that
713 /// historically and for legacy reasons are treated as having implicit extern
714 /// "C" semantics. These semantics are *ignored* by and large today, but its
715 /// important to preserve the preprocessor changes resulting from the
716 /// classification.
717 /*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
718  ArgStringList &CC1Args,
719  const Twine &Path) {
720  CC1Args.push_back("-internal-externc-isystem");
721  CC1Args.push_back(DriverArgs.MakeArgString(Path));
722 }
723 
724 void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
725  ArgStringList &CC1Args,
726  const Twine &Path) {
727  if (llvm::sys::fs::exists(Path))
728  addExternCSystemInclude(DriverArgs, CC1Args, Path);
729 }
730 
731 /// Utility function to add a list of system include directories to CC1.
732 /*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
733  ArgStringList &CC1Args,
734  ArrayRef<StringRef> Paths) {
735  for (const auto Path : Paths) {
736  CC1Args.push_back("-internal-isystem");
737  CC1Args.push_back(DriverArgs.MakeArgString(Path));
738  }
739 }
740 
741 void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
742  ArgStringList &CC1Args) const {
743  // Header search paths should be handled by each of the subclasses.
744  // Historically, they have not been, and instead have been handled inside of
745  // the CC1-layer frontend. As the logic is hoisted out, this generic function
746  // will slowly stop being called.
747  //
748  // While it is being called, replicate a bit of a hack to propagate the
749  // '-stdlib=' flag down to CC1 so that it can in turn customize the C++
750  // header search paths with it. Once all systems are overriding this
751  // function, the CC1 flag and this line can be removed.
752  DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
753 }
754 
755 bool ToolChain::ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const {
756  return getDriver().CCCIsCXX() &&
757  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
758  options::OPT_nostdlibxx);
759 }
760 
761 void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
762  ArgStringList &CmdArgs) const {
763  assert(!Args.hasArg(options::OPT_nostdlibxx) &&
764  "should not have called this");
766 
767  switch (Type) {
769  CmdArgs.push_back("-lc++");
770  break;
771 
773  CmdArgs.push_back("-lstdc++");
774  break;
775  }
776 }
777 
778 void ToolChain::AddFilePathLibArgs(const ArgList &Args,
779  ArgStringList &CmdArgs) const {
780  for (const auto &LibPath : getLibraryPaths())
781  if(LibPath.length() > 0)
782  CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
783 
784  for (const auto &LibPath : getFilePaths())
785  if(LibPath.length() > 0)
786  CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
787 }
788 
789 void ToolChain::AddCCKextLibArgs(const ArgList &Args,
790  ArgStringList &CmdArgs) const {
791  CmdArgs.push_back("-lcc_kext");
792 }
793 
795  ArgStringList &CmdArgs) const {
796  // Do not check for -fno-fast-math or -fno-unsafe-math when -Ofast passed
797  // (to keep the linker options consistent with gcc and clang itself).
798  if (!isOptimizationLevelFast(Args)) {
799  // Check if -ffast-math or -funsafe-math.
800  Arg *A =
801  Args.getLastArg(options::OPT_ffast_math, options::OPT_fno_fast_math,
802  options::OPT_funsafe_math_optimizations,
803  options::OPT_fno_unsafe_math_optimizations);
804 
805  if (!A || A->getOption().getID() == options::OPT_fno_fast_math ||
806  A->getOption().getID() == options::OPT_fno_unsafe_math_optimizations)
807  return false;
808  }
809  // If crtfastmath.o exists add it to the arguments.
810  std::string Path = GetFilePath("crtfastmath.o");
811  if (Path == "crtfastmath.o") // Not found.
812  return false;
813 
814  CmdArgs.push_back(Args.MakeArgString(Path));
815  return true;
816 }
817 
819  // Return sanitizers which don't require runtime support and are not
820  // platform dependent.
821 
822  using namespace SanitizerKind;
823 
824  SanitizerMask Res = (Undefined & ~Vptr & ~Function) | (CFI & ~CFIICall) |
825  CFICastStrict | UnsignedIntegerOverflow |
826  ImplicitConversion | Nullability | LocalBounds;
827  if (getTriple().getArch() == llvm::Triple::x86 ||
828  getTriple().getArch() == llvm::Triple::x86_64 ||
829  getTriple().getArch() == llvm::Triple::arm ||
830  getTriple().getArch() == llvm::Triple::aarch64 ||
831  getTriple().getArch() == llvm::Triple::wasm32 ||
832  getTriple().getArch() == llvm::Triple::wasm64)
833  Res |= CFIICall;
834  if (getTriple().getArch() == llvm::Triple::x86_64 ||
835  getTriple().getArch() == llvm::Triple::aarch64)
836  Res |= ShadowCallStack;
837  return Res;
838 }
839 
840 void ToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs,
841  ArgStringList &CC1Args) const {}
842 
843 void ToolChain::AddIAMCUIncludeArgs(const ArgList &DriverArgs,
844  ArgStringList &CC1Args) const {}
845 
846 static VersionTuple separateMSVCFullVersion(unsigned Version) {
847  if (Version < 100)
848  return VersionTuple(Version);
849 
850  if (Version < 10000)
851  return VersionTuple(Version / 100, Version % 100);
852 
853  unsigned Build = 0, Factor = 1;
854  for (; Version > 10000; Version = Version / 10, Factor = Factor * 10)
855  Build = Build + (Version % 10) * Factor;
856  return VersionTuple(Version / 100, Version % 100, Build);
857 }
858 
859 VersionTuple
861  const llvm::opt::ArgList &Args) const {
862  const Arg *MSCVersion = Args.getLastArg(options::OPT_fmsc_version);
863  const Arg *MSCompatibilityVersion =
864  Args.getLastArg(options::OPT_fms_compatibility_version);
865 
866  if (MSCVersion && MSCompatibilityVersion) {
867  if (D)
868  D->Diag(diag::err_drv_argument_not_allowed_with)
869  << MSCVersion->getAsString(Args)
870  << MSCompatibilityVersion->getAsString(Args);
871  return VersionTuple();
872  }
873 
874  if (MSCompatibilityVersion) {
875  VersionTuple MSVT;
876  if (MSVT.tryParse(MSCompatibilityVersion->getValue())) {
877  if (D)
878  D->Diag(diag::err_drv_invalid_value)
879  << MSCompatibilityVersion->getAsString(Args)
880  << MSCompatibilityVersion->getValue();
881  } else {
882  return MSVT;
883  }
884  }
885 
886  if (MSCVersion) {
887  unsigned Version = 0;
888  if (StringRef(MSCVersion->getValue()).getAsInteger(10, Version)) {
889  if (D)
890  D->Diag(diag::err_drv_invalid_value)
891  << MSCVersion->getAsString(Args) << MSCVersion->getValue();
892  } else {
893  return separateMSVCFullVersion(Version);
894  }
895  }
896 
897  return VersionTuple();
898 }
899 
900 llvm::opt::DerivedArgList *ToolChain::TranslateOpenMPTargetArgs(
901  const llvm::opt::DerivedArgList &Args, bool SameTripleAsHost,
902  SmallVectorImpl<llvm::opt::Arg *> &AllocatedArgs) const {
903  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
904  const OptTable &Opts = getDriver().getOpts();
905  bool Modified = false;
906 
907  // Handle -Xopenmp-target flags
908  for (auto *A : Args) {
909  // Exclude flags which may only apply to the host toolchain.
910  // Do not exclude flags when the host triple (AuxTriple)
911  // matches the current toolchain triple. If it is not present
912  // at all, target and host share a toolchain.
913  if (A->getOption().matches(options::OPT_m_Group)) {
914  if (SameTripleAsHost)
915  DAL->append(A);
916  else
917  Modified = true;
918  continue;
919  }
920 
921  unsigned Index;
922  unsigned Prev;
923  bool XOpenMPTargetNoTriple =
924  A->getOption().matches(options::OPT_Xopenmp_target);
925 
926  if (A->getOption().matches(options::OPT_Xopenmp_target_EQ)) {
927  // Passing device args: -Xopenmp-target=<triple> -opt=val.
928  if (A->getValue(0) == getTripleString())
929  Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
930  else
931  continue;
932  } else if (XOpenMPTargetNoTriple) {
933  // Passing device args: -Xopenmp-target -opt=val.
934  Index = Args.getBaseArgs().MakeIndex(A->getValue(0));
935  } else {
936  DAL->append(A);
937  continue;
938  }
939 
940  // Parse the argument to -Xopenmp-target.
941  Prev = Index;
942  std::unique_ptr<Arg> XOpenMPTargetArg(Opts.ParseOneArg(Args, Index));
943  if (!XOpenMPTargetArg || Index > Prev + 1) {
944  getDriver().Diag(diag::err_drv_invalid_Xopenmp_target_with_args)
945  << A->getAsString(Args);
946  continue;
947  }
948  if (XOpenMPTargetNoTriple && XOpenMPTargetArg &&
949  Args.getAllArgValues(options::OPT_fopenmp_targets_EQ).size() != 1) {
950  getDriver().Diag(diag::err_drv_Xopenmp_target_missing_triple);
951  continue;
952  }
953  XOpenMPTargetArg->setBaseArg(A);
954  A = XOpenMPTargetArg.release();
955  AllocatedArgs.push_back(A);
956  DAL->append(A);
957  Modified = true;
958  }
959 
960  if (Modified)
961  return DAL;
962 
963  delete DAL;
964  return nullptr;
965 }
virtual void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const
Add warning options that need to be passed to cc1 for this target.
Definition: ToolChain.cpp:655
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:717
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:520
static void addExternCSystemIncludeIfExists(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Definition: ToolChain.cpp:724
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:789
virtual const char * getDefaultLinker() const
GetDefaultLinker - Get the default linker to use.
Definition: ToolChain.h:360
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:495
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:1411
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:741
StringRef getOS() const
Definition: ToolChain.h:205
virtual bool isThreadModelSupported(const StringRef Model) const
isThreadModelSupported() - Does this target support a thread model?
Definition: ToolChain.cpp:505
std::string getTargetTriple() const
Definition: Driver.h:308
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:846
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:657
std::string GetLinkerPath() const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name...
Definition: ToolChain.cpp:439
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:646
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:211
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:431
bool isOptimizationLevelFast(const llvm::opt::ArgList &Args)
path_list & getFilePaths()
Definition: ToolChain.h:224
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:794
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:324
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:297
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:860
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:732
virtual llvm::ExceptionHandling GetExceptionModel(const llvm::opt::ArgList &Args) const
GetExceptionModel - Return the tool chain exception model.
Definition: ToolChain.cpp:501
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:900
virtual types::ID LookupTypeForExtension(StringRef Ext) const
LookupTypeForExtension - Return the default language type to use for the given extension.
Definition: ToolChain.cpp:471
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:367
path_list & getLibraryPaths()
Definition: ToolChain.h:221
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:202
virtual void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add arguments to use system-specific CUDA includes.
Definition: ToolChain.cpp:840
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:778
Offload bundler tool.
Definition: Clang.h:134
const Driver & getDriver() const
Definition: ToolChain.h:186
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:702
virtual bool HasNativeLLVMSupport() const
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: ToolChain.cpp:475
constexpr XRayInstrMask None
Definition: XRayInstr.h:38
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:664
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:62
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:755
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:641
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:188
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:818
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:435
static bool needsGCovInstrumentation(const llvm::opt::ArgList &Args)
Returns true if gcov instrumentation (-fprofile-arcs or –coverage) is on.
Definition: ToolChain.cpp:417
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:293
virtual bool isCrossCompiling() const
Returns true if the toolchain is targeting a non-native architecture.
Definition: ToolChain.cpp:479
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:683
virtual Tool * SelectTool(const JobAction &JA) const
Choose a tool to use to handle the action JA.
Definition: ToolChain.cpp:423
virtual void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add arguments to use MCU GCC toolchain includes.
Definition: ToolChain.cpp:843
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:651
virtual RuntimeLibType GetDefaultRuntimeLibType() const
GetDefaultRuntimeLibType - Get the default runtime library variant to use.
Definition: ToolChain.h:363
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:761
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:89
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:132