clang  5.0.0
CommonArgs.cpp
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1 //===--- CommonArgs.cpp - Args handling for multiple toolchains -*- C++ -*-===//
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 "CommonArgs.h"
11 #include "InputInfo.h"
12 #include "Hexagon.h"
13 #include "Arch/AArch64.h"
14 #include "Arch/ARM.h"
15 #include "Arch/Mips.h"
16 #include "Arch/PPC.h"
17 #include "Arch/SystemZ.h"
18 #include "Arch/X86.h"
19 #include "clang/Basic/CharInfo.h"
22 #include "clang/Basic/Version.h"
24 #include "clang/Config/config.h"
25 #include "clang/Driver/Action.h"
27 #include "clang/Driver/Driver.h"
29 #include "clang/Driver/Job.h"
30 #include "clang/Driver/Options.h"
32 #include "clang/Driver/ToolChain.h"
33 #include "clang/Driver/Util.h"
34 #include "llvm/ADT/STLExtras.h"
35 #include "llvm/ADT/SmallString.h"
36 #include "llvm/ADT/StringExtras.h"
37 #include "llvm/ADT/StringSwitch.h"
38 #include "llvm/ADT/Twine.h"
39 #include "llvm/Option/Arg.h"
40 #include "llvm/Option/ArgList.h"
41 #include "llvm/Option/Option.h"
42 #include "llvm/Support/CodeGen.h"
43 #include "llvm/Support/Compression.h"
44 #include "llvm/Support/ErrorHandling.h"
45 #include "llvm/Support/FileSystem.h"
46 #include "llvm/Support/Host.h"
47 #include "llvm/Support/Path.h"
48 #include "llvm/Support/Process.h"
49 #include "llvm/Support/Program.h"
50 #include "llvm/Support/ScopedPrinter.h"
51 #include "llvm/Support/TargetParser.h"
52 #include "llvm/Support/YAMLParser.h"
53 
54 using namespace clang::driver;
55 using namespace clang::driver::tools;
56 using namespace clang;
57 using namespace llvm::opt;
58 
59 void tools::addPathIfExists(const Driver &D, const Twine &Path,
60  ToolChain::path_list &Paths) {
61  if (D.getVFS().exists(Path))
62  Paths.push_back(Path.str());
63 }
64 
65 void tools::handleTargetFeaturesGroup(const ArgList &Args,
66  std::vector<StringRef> &Features,
67  OptSpecifier Group) {
68  for (const Arg *A : Args.filtered(Group)) {
69  StringRef Name = A->getOption().getName();
70  A->claim();
71 
72  // Skip over "-m".
73  assert(Name.startswith("m") && "Invalid feature name.");
74  Name = Name.substr(1);
75 
76  bool IsNegative = Name.startswith("no-");
77  if (IsNegative)
78  Name = Name.substr(3);
79  Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
80  }
81 }
82 
83 void tools::addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,
84  const char *ArgName, const char *EnvVar) {
85  const char *DirList = ::getenv(EnvVar);
86  bool CombinedArg = false;
87 
88  if (!DirList)
89  return; // Nothing to do.
90 
91  StringRef Name(ArgName);
92  if (Name.equals("-I") || Name.equals("-L"))
93  CombinedArg = true;
94 
95  StringRef Dirs(DirList);
96  if (Dirs.empty()) // Empty string should not add '.'.
97  return;
98 
99  StringRef::size_type Delim;
100  while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {
101  if (Delim == 0) { // Leading colon.
102  if (CombinedArg) {
103  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
104  } else {
105  CmdArgs.push_back(ArgName);
106  CmdArgs.push_back(".");
107  }
108  } else {
109  if (CombinedArg) {
110  CmdArgs.push_back(
111  Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
112  } else {
113  CmdArgs.push_back(ArgName);
114  CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
115  }
116  }
117  Dirs = Dirs.substr(Delim + 1);
118  }
119 
120  if (Dirs.empty()) { // Trailing colon.
121  if (CombinedArg) {
122  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
123  } else {
124  CmdArgs.push_back(ArgName);
125  CmdArgs.push_back(".");
126  }
127  } else { // Add the last path.
128  if (CombinedArg) {
129  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
130  } else {
131  CmdArgs.push_back(ArgName);
132  CmdArgs.push_back(Args.MakeArgString(Dirs));
133  }
134  }
135 }
136 
137 void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
138  const ArgList &Args, ArgStringList &CmdArgs,
139  const JobAction &JA) {
140  const Driver &D = TC.getDriver();
141 
142  // Add extra linker input arguments which are not treated as inputs
143  // (constructed via -Xarch_).
144  Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
145 
146  for (const auto &II : Inputs) {
147  // If the current tool chain refers to an OpenMP offloading host, we should
148  // ignore inputs that refer to OpenMP offloading devices - they will be
149  // embedded according to a proper linker script.
150  if (auto *IA = II.getAction())
152  IA->isDeviceOffloading(Action::OFK_OpenMP))
153  continue;
154 
155  if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
156  // Don't try to pass LLVM inputs unless we have native support.
157  D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
158 
159  // Add filenames immediately.
160  if (II.isFilename()) {
161  CmdArgs.push_back(II.getFilename());
162  continue;
163  }
164 
165  // Otherwise, this is a linker input argument.
166  const Arg &A = II.getInputArg();
167 
168  // Handle reserved library options.
169  if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
170  TC.AddCXXStdlibLibArgs(Args, CmdArgs);
171  else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
172  TC.AddCCKextLibArgs(Args, CmdArgs);
173  else if (A.getOption().matches(options::OPT_z)) {
174  // Pass -z prefix for gcc linker compatibility.
175  A.claim();
176  A.render(Args, CmdArgs);
177  } else {
178  A.renderAsInput(Args, CmdArgs);
179  }
180  }
181 
182  // LIBRARY_PATH - included following the user specified library paths.
183  // and only supported on native toolchains.
184  if (!TC.isCrossCompiling()) {
185  addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
186  }
187 }
188 
189 void tools::AddTargetFeature(const ArgList &Args,
190  std::vector<StringRef> &Features,
191  OptSpecifier OnOpt, OptSpecifier OffOpt,
192  StringRef FeatureName) {
193  if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {
194  if (A->getOption().matches(OnOpt))
195  Features.push_back(Args.MakeArgString("+" + FeatureName));
196  else
197  Features.push_back(Args.MakeArgString("-" + FeatureName));
198  }
199 }
200 
201 /// Get the (LLVM) name of the R600 gpu we are targeting.
202 static std::string getR600TargetGPU(const ArgList &Args) {
203  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
204  const char *GPUName = A->getValue();
205  return llvm::StringSwitch<const char *>(GPUName)
206  .Cases("rv630", "rv635", "r600")
207  .Cases("rv610", "rv620", "rs780", "rs880")
208  .Case("rv740", "rv770")
209  .Case("palm", "cedar")
210  .Cases("sumo", "sumo2", "sumo")
211  .Case("hemlock", "cypress")
212  .Case("aruba", "cayman")
213  .Default(GPUName);
214  }
215  return "";
216 }
217 
218 static std::string getNios2TargetCPU(const ArgList &Args) {
219  Arg *A = Args.getLastArg(options::OPT_mcpu_EQ);
220  if (!A)
221  A = Args.getLastArg(options::OPT_march_EQ);
222 
223  if (!A)
224  return "";
225 
226  const char *name = A->getValue();
227  return llvm::StringSwitch<const char *>(name)
228  .Case("r1", "nios2r1")
229  .Case("r2", "nios2r2")
230  .Default(name);
231 }
232 
233 static std::string getLanaiTargetCPU(const ArgList &Args) {
234  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
235  return A->getValue();
236  }
237  return "";
238 }
239 
240 /// Get the (LLVM) name of the WebAssembly cpu we are targeting.
241 static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
242  // If we have -mcpu=, use that.
243  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
244  StringRef CPU = A->getValue();
245 
246 #ifdef __wasm__
247  // Handle "native" by examining the host. "native" isn't meaningful when
248  // cross compiling, so only support this when the host is also WebAssembly.
249  if (CPU == "native")
250  return llvm::sys::getHostCPUName();
251 #endif
252 
253  return CPU;
254  }
255 
256  return "generic";
257 }
258 
259 std::string tools::getCPUName(const ArgList &Args, const llvm::Triple &T,
260  bool FromAs) {
261  Arg *A;
262 
263  switch (T.getArch()) {
264  default:
265  return "";
266 
267  case llvm::Triple::aarch64:
268  case llvm::Triple::aarch64_be:
269  return aarch64::getAArch64TargetCPU(Args, A);
270 
271  case llvm::Triple::arm:
272  case llvm::Triple::armeb:
273  case llvm::Triple::thumb:
274  case llvm::Triple::thumbeb: {
275  StringRef MArch, MCPU;
276  arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
277  return arm::getARMTargetCPU(MCPU, MArch, T);
278  }
279 
280  case llvm::Triple::avr:
281  if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))
282  return A->getValue();
283  return "";
284 
285  case llvm::Triple::nios2: {
286  return getNios2TargetCPU(Args);
287  }
288 
289  case llvm::Triple::mips:
290  case llvm::Triple::mipsel:
291  case llvm::Triple::mips64:
292  case llvm::Triple::mips64el: {
293  StringRef CPUName;
294  StringRef ABIName;
295  mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
296  return CPUName;
297  }
298 
299  case llvm::Triple::nvptx:
300  case llvm::Triple::nvptx64:
301  if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
302  return A->getValue();
303  return "";
304 
305  case llvm::Triple::ppc:
306  case llvm::Triple::ppc64:
307  case llvm::Triple::ppc64le: {
308  std::string TargetCPUName = ppc::getPPCTargetCPU(Args);
309  // LLVM may default to generating code for the native CPU,
310  // but, like gcc, we default to a more generic option for
311  // each architecture. (except on Darwin)
312  if (TargetCPUName.empty() && !T.isOSDarwin()) {
313  if (T.getArch() == llvm::Triple::ppc64)
314  TargetCPUName = "ppc64";
315  else if (T.getArch() == llvm::Triple::ppc64le)
316  TargetCPUName = "ppc64le";
317  else
318  TargetCPUName = "ppc";
319  }
320  return TargetCPUName;
321  }
322 
323  case llvm::Triple::sparc:
324  case llvm::Triple::sparcel:
325  case llvm::Triple::sparcv9:
326  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
327  return A->getValue();
328  return "";
329 
330  case llvm::Triple::x86:
331  case llvm::Triple::x86_64:
332  return x86::getX86TargetCPU(Args, T);
333 
334  case llvm::Triple::hexagon:
335  return "hexagon" +
337 
338  case llvm::Triple::lanai:
339  return getLanaiTargetCPU(Args);
340 
341  case llvm::Triple::systemz:
342  return systemz::getSystemZTargetCPU(Args);
343 
344  case llvm::Triple::r600:
345  case llvm::Triple::amdgcn:
346  return getR600TargetGPU(Args);
347 
348  case llvm::Triple::wasm32:
349  case llvm::Triple::wasm64:
350  return getWebAssemblyTargetCPU(Args);
351  }
352 }
353 
354 unsigned tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
355  unsigned Parallelism = 0;
356  Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
357  if (LtoJobsArg &&
358  StringRef(LtoJobsArg->getValue()).getAsInteger(10, Parallelism))
359  D.Diag(diag::err_drv_invalid_int_value) << LtoJobsArg->getAsString(Args)
360  << LtoJobsArg->getValue();
361  return Parallelism;
362 }
363 
364 // CloudABI and WebAssembly use -ffunction-sections and -fdata-sections by
365 // default.
366 bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
367  return Triple.getOS() == llvm::Triple::CloudABI ||
368  Triple.getArch() == llvm::Triple::wasm32 ||
369  Triple.getArch() == llvm::Triple::wasm64;
370 }
371 
372 void tools::AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
373  ArgStringList &CmdArgs, bool IsThinLTO,
374  const Driver &D) {
375  // Tell the linker to load the plugin. This has to come before AddLinkerInputs
376  // as gold requires -plugin to come before any -plugin-opt that -Wl might
377  // forward.
378  CmdArgs.push_back("-plugin");
379  std::string Plugin =
380  ToolChain.getDriver().Dir + "/../lib" CLANG_LIBDIR_SUFFIX "/LLVMgold.so";
381  CmdArgs.push_back(Args.MakeArgString(Plugin));
382 
383  // Try to pass driver level flags relevant to LTO code generation down to
384  // the plugin.
385 
386  // Handle flags for selecting CPU variants.
387  std::string CPU = getCPUName(Args, ToolChain.getTriple());
388  if (!CPU.empty())
389  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
390 
391  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
392  StringRef OOpt;
393  if (A->getOption().matches(options::OPT_O4) ||
394  A->getOption().matches(options::OPT_Ofast))
395  OOpt = "3";
396  else if (A->getOption().matches(options::OPT_O))
397  OOpt = A->getValue();
398  else if (A->getOption().matches(options::OPT_O0))
399  OOpt = "0";
400  if (!OOpt.empty())
401  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
402  }
403 
404  if (IsThinLTO)
405  CmdArgs.push_back("-plugin-opt=thinlto");
406 
407  if (unsigned Parallelism = getLTOParallelism(Args, D))
408  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=jobs=") +
409  llvm::to_string(Parallelism)));
410 
411  // If an explicit debugger tuning argument appeared, pass it along.
412  if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
413  options::OPT_ggdbN_Group)) {
414  if (A->getOption().matches(options::OPT_glldb))
415  CmdArgs.push_back("-plugin-opt=-debugger-tune=lldb");
416  else if (A->getOption().matches(options::OPT_gsce))
417  CmdArgs.push_back("-plugin-opt=-debugger-tune=sce");
418  else
419  CmdArgs.push_back("-plugin-opt=-debugger-tune=gdb");
420  }
421 
422  bool UseSeparateSections =
424 
425  if (Args.hasFlag(options::OPT_ffunction_sections,
426  options::OPT_fno_function_sections, UseSeparateSections)) {
427  CmdArgs.push_back("-plugin-opt=-function-sections");
428  }
429 
430  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
431  UseSeparateSections)) {
432  CmdArgs.push_back("-plugin-opt=-data-sections");
433  }
434 
435  if (Arg *A = getLastProfileSampleUseArg(Args)) {
436  StringRef FName = A->getValue();
437  if (!llvm::sys::fs::exists(FName))
438  D.Diag(diag::err_drv_no_such_file) << FName;
439  else
440  CmdArgs.push_back(
441  Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
442  }
443 }
444 
445 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
446  ArgStringList &CmdArgs) {
447  std::string CandidateRPath = TC.getArchSpecificLibPath();
448  if (TC.getVFS().exists(CandidateRPath)) {
449  CmdArgs.push_back("-rpath");
450  CmdArgs.push_back(Args.MakeArgString(CandidateRPath.c_str()));
451  }
452 }
453 
454 bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
455  const ArgList &Args, bool IsOffloadingHost,
456  bool GompNeedsRT) {
457  if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
458  options::OPT_fno_openmp, false))
459  return false;
460 
461  switch (TC.getDriver().getOpenMPRuntime(Args)) {
462  case Driver::OMPRT_OMP:
463  CmdArgs.push_back("-lomp");
464  break;
465  case Driver::OMPRT_GOMP:
466  CmdArgs.push_back("-lgomp");
467 
468  if (GompNeedsRT)
469  CmdArgs.push_back("-lrt");
470  break;
471  case Driver::OMPRT_IOMP5:
472  CmdArgs.push_back("-liomp5");
473  break;
475  // Already diagnosed.
476  return false;
477  }
478 
479  if (IsOffloadingHost)
480  CmdArgs.push_back("-lomptarget");
481 
482  addArchSpecificRPath(TC, Args, CmdArgs);
483 
484  return true;
485 }
486 
487 static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
488  ArgStringList &CmdArgs, StringRef Sanitizer,
489  bool IsShared, bool IsWhole) {
490  // Wrap any static runtimes that must be forced into executable in
491  // whole-archive.
492  if (IsWhole) CmdArgs.push_back("-whole-archive");
493  CmdArgs.push_back(TC.getCompilerRTArgString(Args, Sanitizer, IsShared));
494  if (IsWhole) CmdArgs.push_back("-no-whole-archive");
495 
496  if (IsShared) {
497  addArchSpecificRPath(TC, Args, CmdArgs);
498  }
499 }
500 
501 // Tries to use a file with the list of dynamic symbols that need to be exported
502 // from the runtime library. Returns true if the file was found.
503 static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
504  ArgStringList &CmdArgs,
505  StringRef Sanitizer) {
506  SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
507  if (llvm::sys::fs::exists(SanRT + ".syms")) {
508  CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
509  return true;
510  }
511  return false;
512 }
513 
514 void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
515  ArgStringList &CmdArgs) {
516  // Force linking against the system libraries sanitizers depends on
517  // (see PR15823 why this is necessary).
518  CmdArgs.push_back("--no-as-needed");
519  // There's no libpthread or librt on RTEMS.
520  if (TC.getTriple().getOS() != llvm::Triple::RTEMS) {
521  CmdArgs.push_back("-lpthread");
522  CmdArgs.push_back("-lrt");
523  }
524  CmdArgs.push_back("-lm");
525  // There's no libdl on FreeBSD or RTEMS.
526  if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
527  TC.getTriple().getOS() != llvm::Triple::NetBSD &&
528  TC.getTriple().getOS() != llvm::Triple::RTEMS)
529  CmdArgs.push_back("-ldl");
530 }
531 
532 static void
533 collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
534  SmallVectorImpl<StringRef> &SharedRuntimes,
535  SmallVectorImpl<StringRef> &StaticRuntimes,
536  SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
537  SmallVectorImpl<StringRef> &HelperStaticRuntimes,
538  SmallVectorImpl<StringRef> &RequiredSymbols) {
539  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
540  // Collect shared runtimes.
541  if (SanArgs.needsAsanRt() && SanArgs.needsSharedAsanRt()) {
542  SharedRuntimes.push_back("asan");
543  }
544  // The stats_client library is also statically linked into DSOs.
545  if (SanArgs.needsStatsRt())
546  StaticRuntimes.push_back("stats_client");
547 
548  // Collect static runtimes.
549  if (Args.hasArg(options::OPT_shared) || TC.getTriple().isAndroid()) {
550  // Don't link static runtimes into DSOs or if compiling for Android.
551  return;
552  }
553  if (SanArgs.needsAsanRt()) {
554  if (SanArgs.needsSharedAsanRt()) {
555  HelperStaticRuntimes.push_back("asan-preinit");
556  } else {
557  StaticRuntimes.push_back("asan");
558  if (SanArgs.linkCXXRuntimes())
559  StaticRuntimes.push_back("asan_cxx");
560  }
561  }
562  if (SanArgs.needsDfsanRt())
563  StaticRuntimes.push_back("dfsan");
564  if (SanArgs.needsLsanRt())
565  StaticRuntimes.push_back("lsan");
566  if (SanArgs.needsMsanRt()) {
567  StaticRuntimes.push_back("msan");
568  if (SanArgs.linkCXXRuntimes())
569  StaticRuntimes.push_back("msan_cxx");
570  }
571  if (SanArgs.needsTsanRt()) {
572  StaticRuntimes.push_back("tsan");
573  if (SanArgs.linkCXXRuntimes())
574  StaticRuntimes.push_back("tsan_cxx");
575  }
576  if (SanArgs.needsUbsanRt()) {
577  StaticRuntimes.push_back("ubsan_standalone");
578  if (SanArgs.linkCXXRuntimes())
579  StaticRuntimes.push_back("ubsan_standalone_cxx");
580  }
581  if (SanArgs.needsSafeStackRt()) {
582  NonWholeStaticRuntimes.push_back("safestack");
583  RequiredSymbols.push_back("__safestack_init");
584  }
585  if (SanArgs.needsCfiRt())
586  StaticRuntimes.push_back("cfi");
587  if (SanArgs.needsCfiDiagRt()) {
588  StaticRuntimes.push_back("cfi_diag");
589  if (SanArgs.linkCXXRuntimes())
590  StaticRuntimes.push_back("ubsan_standalone_cxx");
591  }
592  if (SanArgs.needsStatsRt()) {
593  NonWholeStaticRuntimes.push_back("stats");
594  RequiredSymbols.push_back("__sanitizer_stats_register");
595  }
596  if (SanArgs.needsEsanRt())
597  StaticRuntimes.push_back("esan");
598 }
599 
600 static void addLibFuzzerRuntime(const ToolChain &TC,
601  const ArgList &Args,
602  ArgStringList &CmdArgs) {
603  StringRef ParentDir = llvm::sys::path::parent_path(TC.getDriver().InstalledDir);
604  SmallString<128> P(ParentDir);
605  llvm::sys::path::append(P, "lib", "libLLVMFuzzer.a");
606  CmdArgs.push_back(Args.MakeArgString(P));
607  TC.AddCXXStdlibLibArgs(Args, CmdArgs);
608 }
609 
610 
611 // Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
612 // C runtime, etc). Returns true if sanitizer system deps need to be linked in.
613 bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
614  ArgStringList &CmdArgs) {
615  SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
616  NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
617  collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
618  NonWholeStaticRuntimes, HelperStaticRuntimes,
619  RequiredSymbols);
620  // Inject libfuzzer dependencies.
621  if (TC.getSanitizerArgs().needsFuzzer()
622  && !Args.hasArg(options::OPT_shared)) {
623  addLibFuzzerRuntime(TC, Args, CmdArgs);
624  }
625 
626  for (auto RT : SharedRuntimes)
627  addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
628  for (auto RT : HelperStaticRuntimes)
629  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
630  bool AddExportDynamic = false;
631  for (auto RT : StaticRuntimes) {
632  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
633  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
634  }
635  for (auto RT : NonWholeStaticRuntimes) {
636  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
637  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
638  }
639  for (auto S : RequiredSymbols) {
640  CmdArgs.push_back("-u");
641  CmdArgs.push_back(Args.MakeArgString(S));
642  }
643  // If there is a static runtime with no dynamic list, force all the symbols
644  // to be dynamic to be sure we export sanitizer interface functions.
645  if (AddExportDynamic)
646  CmdArgs.push_back("-export-dynamic");
647 
648  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
649  if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
650  CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
651 
652  return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
653 }
654 
655 bool tools::areOptimizationsEnabled(const ArgList &Args) {
656  // Find the last -O arg and see if it is non-zero.
657  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
658  return !A->getOption().matches(options::OPT_O0);
659  // Defaults to -O0.
660  return false;
661 }
662 
663 const char *tools::SplitDebugName(const ArgList &Args, const InputInfo &Input) {
664  Arg *FinalOutput = Args.getLastArg(options::OPT_o);
665  if (FinalOutput && Args.hasArg(options::OPT_c)) {
666  SmallString<128> T(FinalOutput->getValue());
667  llvm::sys::path::replace_extension(T, "dwo");
668  return Args.MakeArgString(T);
669  } else {
670  // Use the compilation dir.
672  Args.getLastArgValue(options::OPT_fdebug_compilation_dir));
673  SmallString<128> F(llvm::sys::path::stem(Input.getBaseInput()));
674  llvm::sys::path::replace_extension(F, "dwo");
675  T += F;
676  return Args.MakeArgString(F);
677  }
678 }
679 
680 void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
681  const JobAction &JA, const ArgList &Args,
682  const InputInfo &Output, const char *OutFile) {
683  ArgStringList ExtractArgs;
684  ExtractArgs.push_back("--extract-dwo");
685 
686  ArgStringList StripArgs;
687  StripArgs.push_back("--strip-dwo");
688 
689  // Grabbing the output of the earlier compile step.
690  StripArgs.push_back(Output.getFilename());
691  ExtractArgs.push_back(Output.getFilename());
692  ExtractArgs.push_back(OutFile);
693 
694  const char *Exec = Args.MakeArgString(TC.GetProgramPath("objcopy"));
695  InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
696 
697  // First extract the dwo sections.
698  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, ExtractArgs, II));
699 
700  // Then remove them from the original .o file.
701  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, StripArgs, II));
702 }
703 
704 // Claim options we don't want to warn if they are unused. We do this for
705 // options that build systems might add but are unused when assembling or only
706 // running the preprocessor for example.
707 void tools::claimNoWarnArgs(const ArgList &Args) {
708  // Don't warn about unused -f(no-)?lto. This can happen when we're
709  // preprocessing, precompiling or assembling.
710  Args.ClaimAllArgs(options::OPT_flto_EQ);
711  Args.ClaimAllArgs(options::OPT_flto);
712  Args.ClaimAllArgs(options::OPT_fno_lto);
713 }
714 
715 Arg *tools::getLastProfileUseArg(const ArgList &Args) {
716  auto *ProfileUseArg = Args.getLastArg(
717  options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
718  options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
719  options::OPT_fno_profile_instr_use);
720 
721  if (ProfileUseArg &&
722  ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
723  ProfileUseArg = nullptr;
724 
725  return ProfileUseArg;
726 }
727 
728 Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
729  auto *ProfileSampleUseArg = Args.getLastArg(
730  options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
731  options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
732  options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
733 
734  if (ProfileSampleUseArg &&
735  (ProfileSampleUseArg->getOption().matches(
736  options::OPT_fno_profile_sample_use) ||
737  ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
738  return nullptr;
739 
740  return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
741  options::OPT_fauto_profile_EQ);
742 }
743 
744 /// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
745 /// smooshes them together with platform defaults, to decide whether
746 /// this compile should be using PIC mode or not. Returns a tuple of
747 /// (RelocationModel, PICLevel, IsPIE).
748 std::tuple<llvm::Reloc::Model, unsigned, bool>
749 tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
750  const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
751  const llvm::Triple &Triple = ToolChain.getTriple();
752 
753  bool PIE = ToolChain.isPIEDefault();
754  bool PIC = PIE || ToolChain.isPICDefault();
755  // The Darwin/MachO default to use PIC does not apply when using -static.
756  if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))
757  PIE = PIC = false;
758  bool IsPICLevelTwo = PIC;
759 
760  bool KernelOrKext =
761  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
762 
763  // Android-specific defaults for PIC/PIE
764  if (Triple.isAndroid()) {
765  switch (Triple.getArch()) {
766  case llvm::Triple::arm:
767  case llvm::Triple::armeb:
768  case llvm::Triple::thumb:
769  case llvm::Triple::thumbeb:
770  case llvm::Triple::aarch64:
771  case llvm::Triple::mips:
772  case llvm::Triple::mipsel:
773  case llvm::Triple::mips64:
774  case llvm::Triple::mips64el:
775  PIC = true; // "-fpic"
776  break;
777 
778  case llvm::Triple::x86:
779  case llvm::Triple::x86_64:
780  PIC = true; // "-fPIC"
781  IsPICLevelTwo = true;
782  break;
783 
784  default:
785  break;
786  }
787  }
788 
789  // OpenBSD-specific defaults for PIE
790  if (Triple.getOS() == llvm::Triple::OpenBSD) {
791  switch (ToolChain.getArch()) {
792  case llvm::Triple::arm:
793  case llvm::Triple::aarch64:
794  case llvm::Triple::mips64:
795  case llvm::Triple::mips64el:
796  case llvm::Triple::x86:
797  case llvm::Triple::x86_64:
798  IsPICLevelTwo = false; // "-fpie"
799  break;
800 
801  case llvm::Triple::ppc:
802  case llvm::Triple::sparc:
803  case llvm::Triple::sparcel:
804  case llvm::Triple::sparcv9:
805  IsPICLevelTwo = true; // "-fPIE"
806  break;
807 
808  default:
809  break;
810  }
811  }
812 
813  // The last argument relating to either PIC or PIE wins, and no
814  // other argument is used. If the last argument is any flavor of the
815  // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
816  // option implicitly enables PIC at the same level.
817  Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
818  options::OPT_fpic, options::OPT_fno_pic,
819  options::OPT_fPIE, options::OPT_fno_PIE,
820  options::OPT_fpie, options::OPT_fno_pie);
821  if (Triple.isOSWindows() && LastPICArg &&
822  LastPICArg ==
823  Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
824  options::OPT_fPIE, options::OPT_fpie)) {
825  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
826  << LastPICArg->getSpelling() << Triple.str();
827  if (Triple.getArch() == llvm::Triple::x86_64)
828  return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
829  return std::make_tuple(llvm::Reloc::Static, 0U, false);
830  }
831 
832  // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
833  // is forced, then neither PIC nor PIE flags will have no effect.
834  if (!ToolChain.isPICDefaultForced()) {
835  if (LastPICArg) {
836  Option O = LastPICArg->getOption();
837  if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
838  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
839  PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
840  PIC =
841  PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
842  IsPICLevelTwo =
843  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
844  } else {
845  PIE = PIC = false;
846  if (EffectiveTriple.isPS4CPU()) {
847  Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
848  StringRef Model = ModelArg ? ModelArg->getValue() : "";
849  if (Model != "kernel") {
850  PIC = true;
851  ToolChain.getDriver().Diag(diag::warn_drv_ps4_force_pic)
852  << LastPICArg->getSpelling();
853  }
854  }
855  }
856  }
857  }
858 
859  // Introduce a Darwin and PS4-specific hack. If the default is PIC, but the
860  // PIC level would've been set to level 1, force it back to level 2 PIC
861  // instead.
862  if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS4CPU()))
863  IsPICLevelTwo |= ToolChain.isPICDefault();
864 
865  // This kernel flags are a trump-card: they will disable PIC/PIE
866  // generation, independent of the argument order.
867  if (KernelOrKext &&
868  ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
869  !EffectiveTriple.isWatchOS()))
870  PIC = PIE = false;
871 
872  if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
873  // This is a very special mode. It trumps the other modes, almost no one
874  // uses it, and it isn't even valid on any OS but Darwin.
875  if (!Triple.isOSDarwin())
876  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
877  << A->getSpelling() << Triple.str();
878 
879  // FIXME: Warn when this flag trumps some other PIC or PIE flag.
880 
881  // Only a forced PIC mode can cause the actual compile to have PIC defines
882  // etc., no flags are sufficient. This behavior was selected to closely
883  // match that of llvm-gcc and Apple GCC before that.
884  PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();
885 
886  return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
887  }
888 
889  bool EmbeddedPISupported;
890  switch (Triple.getArch()) {
891  case llvm::Triple::arm:
892  case llvm::Triple::armeb:
893  case llvm::Triple::thumb:
894  case llvm::Triple::thumbeb:
895  EmbeddedPISupported = true;
896  break;
897  default:
898  EmbeddedPISupported = false;
899  break;
900  }
901 
902  bool ROPI = false, RWPI = false;
903  Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
904  if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
905  if (!EmbeddedPISupported)
906  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
907  << LastROPIArg->getSpelling() << Triple.str();
908  ROPI = true;
909  }
910  Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
911  if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
912  if (!EmbeddedPISupported)
913  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
914  << LastRWPIArg->getSpelling() << Triple.str();
915  RWPI = true;
916  }
917 
918  // ROPI and RWPI are not comaptible with PIC or PIE.
919  if ((ROPI || RWPI) && (PIC || PIE))
920  ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
921 
922  // When targettng MIPS64 with N64, the default is PIC, unless -mno-abicalls is
923  // used.
924  if ((Triple.getArch() == llvm::Triple::mips64 ||
925  Triple.getArch() == llvm::Triple::mips64el) &&
926  Args.hasArg(options::OPT_mno_abicalls))
927  return std::make_tuple(llvm::Reloc::Static, 0U, false);
928 
929  if (PIC)
930  return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
931 
932  llvm::Reloc::Model RelocM = llvm::Reloc::Static;
933  if (ROPI && RWPI)
934  RelocM = llvm::Reloc::ROPI_RWPI;
935  else if (ROPI)
936  RelocM = llvm::Reloc::ROPI;
937  else if (RWPI)
938  RelocM = llvm::Reloc::RWPI;
939 
940  return std::make_tuple(RelocM, 0U, false);
941 }
942 
943 void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
944  ArgStringList &CmdArgs) {
945  llvm::Reloc::Model RelocationModel;
946  unsigned PICLevel;
947  bool IsPIE;
948  std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
949 
950  if (RelocationModel != llvm::Reloc::Static)
951  CmdArgs.push_back("-KPIC");
952 }
953 
954 /// \brief Determine whether Objective-C automated reference counting is
955 /// enabled.
956 bool tools::isObjCAutoRefCount(const ArgList &Args) {
957  return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
958 }
959 
960 static void AddLibgcc(const llvm::Triple &Triple, const Driver &D,
961  ArgStringList &CmdArgs, const ArgList &Args) {
962  bool isAndroid = Triple.isAndroid();
963  bool isCygMing = Triple.isOSCygMing();
964  bool IsIAMCU = Triple.isOSIAMCU();
965  bool StaticLibgcc = Args.hasArg(options::OPT_static_libgcc) ||
966  Args.hasArg(options::OPT_static);
967  if (!D.CCCIsCXX())
968  CmdArgs.push_back("-lgcc");
969 
970  if (StaticLibgcc || isAndroid) {
971  if (D.CCCIsCXX())
972  CmdArgs.push_back("-lgcc");
973  } else {
974  if (!D.CCCIsCXX() && !isCygMing)
975  CmdArgs.push_back("--as-needed");
976  CmdArgs.push_back("-lgcc_s");
977  if (!D.CCCIsCXX() && !isCygMing)
978  CmdArgs.push_back("--no-as-needed");
979  }
980 
981  if (StaticLibgcc && !isAndroid && !IsIAMCU)
982  CmdArgs.push_back("-lgcc_eh");
983  else if (!Args.hasArg(options::OPT_shared) && D.CCCIsCXX())
984  CmdArgs.push_back("-lgcc");
985 
986  // According to Android ABI, we have to link with libdl if we are
987  // linking with non-static libgcc.
988  //
989  // NOTE: This fixes a link error on Android MIPS as well. The non-static
990  // libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl.
991  if (isAndroid && !StaticLibgcc)
992  CmdArgs.push_back("-ldl");
993 }
994 
995 void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
996  ArgStringList &CmdArgs, const ArgList &Args) {
997  // Make use of compiler-rt if --rtlib option is used
999 
1000  switch (RLT) {
1002  switch (TC.getTriple().getOS()) {
1003  default:
1004  llvm_unreachable("unsupported OS");
1005  case llvm::Triple::Win32:
1006  case llvm::Triple::Linux:
1007  case llvm::Triple::Fuchsia:
1008  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
1009  break;
1010  }
1011  break;
1012  case ToolChain::RLT_Libgcc:
1013  // Make sure libgcc is not used under MSVC environment by default
1014  if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1015  // Issue error diagnostic if libgcc is explicitly specified
1016  // through command line as --rtlib option argument.
1017  if (Args.hasArg(options::OPT_rtlib_EQ)) {
1018  TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
1019  << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC";
1020  }
1021  } else
1022  AddLibgcc(TC.getTriple(), D, CmdArgs, Args);
1023  break;
1024  }
1025 }
const llvm::Triple & getTriple() const
Definition: ToolChain.h:144
void handleTargetFeaturesGroup(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier Group)
SmallVector< std::string, 16 > path_list
Definition: ToolChain.h:52
const char * getSystemZTargetCPU(const llvm::opt::ArgList &Args)
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:371
const llvm::Triple & getEffectiveTriple() const
Get the toolchain's effective clang triple.
Definition: ToolChain.h:167
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:366
StringRef P
Defines types useful for describing an Objective-C runtime.
void AddRunTimeLibs(const ToolChain &TC, const Driver &D, llvm::opt::ArgStringList &CmdArgs, const llvm::opt::ArgList &Args)
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:116
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:153
void AddTargetFeature(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier OnOpt, llvm::opt::OptSpecifier OffOpt, StringRef FeatureName)
virtual bool isPICDefaultForced() const =0
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Sanitizer, bool IsShared, bool IsWhole)
Definition: CommonArgs.cpp:487
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:673
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:174
static void AddLibgcc(const llvm::Triple &Triple, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
Definition: CommonArgs.cpp:960
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
virtual bool HasNativeLLVMSupport() const
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: ToolChain.cpp:407
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:127
OpenMPRuntimeKind getOpenMPRuntime(const llvm::opt::ArgList &Args) const
Compute the desired OpenMP runtime from the flags provided.
Definition: Driver.cpp:483
std::string getAArch64TargetCPU(const llvm::opt::ArgList &Args, llvm::opt::Arg *&A)
virtual bool isCrossCompiling() const
Returns true if the toolchain is targeting a non-native architecture.
Definition: ToolChain.cpp:411
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Sanitizer)
Definition: CommonArgs.cpp:503
static std::string getNios2TargetCPU(const ArgList &Args)
Definition: CommonArgs.cpp:218
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:23
void addArchSpecificRPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, bool IsThinLTO, const Driver &D)
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:651
std::string getTripleString() const
Definition: ToolChain.h:162
The LLVM OpenMP runtime.
Definition: Driver.h:102
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:65
const Driver & getDriver() const
Definition: ToolChain.h:142
An unknown OpenMP runtime.
Definition: Driver.h:98
std::string getArchSpecificLibPath() const
Definition: ToolChain.cpp:337
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
void addDirectoryList(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const char *ArgName, const char *EnvVar)
static void addLibFuzzerRuntime(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs)
Definition: CommonArgs.cpp:600
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:311
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:560
Defines the clang::LangOptions interface.
static StringRef getWebAssemblyTargetCPU(const ArgList &Args)
Get the (LLVM) name of the WebAssembly cpu we are targeting.
Definition: CommonArgs.cpp:241
virtual bool isPICDefault() const =0
Test whether this toolchain defaults to PIC.
Defines version macros and version-related utility functions for Clang.
static const StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:483
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input)
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:189
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
bool isHostOffloading(OffloadKind OKind) const
Check if this action have any offload kinds.
Definition: Action.h:187
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
vfs::FileSystem & getVFS() const
Definition: Driver.h:284
const char * getX86TargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
const char * getFilename() const
Definition: InputInfo.h:84
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
std::string getPPCTargetCPU(const llvm::opt::ArgList &Args)
The legacy name for the LLVM OpenMP runtime from when it was the Intel OpenMP runtime.
Definition: Driver.h:112
std::string InstalledDir
The path to the installed clang directory, if any.
Definition: Driver.h:133
llvm::opt::Arg * getLastProfileSampleUseArg(const llvm::opt::ArgList &Args)
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
void SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T, const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Output, const char *OutFile)
std::string getARMTargetCPU(StringRef CPU, llvm::StringRef Arch, const llvm::Triple &Triple)
StringRef Name
Definition: USRFinder.cpp:123
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:331
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
unsigned getLTOParallelism(const llvm::opt::ArgList &Args, const Driver &D)
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
Defines the virtual file system interface vfs::FileSystem.
The GNU OpenMP runtime.
Definition: Driver.h:107
void getARMArchCPUFromArgs(const llvm::opt::ArgList &Args, llvm::StringRef &Arch, llvm::StringRef &CPU, bool FromAs=false)
bool areOptimizationsEnabled(const llvm::opt::ArgList &Args)
static std::string getLanaiTargetCPU(const ArgList &Args)
Definition: CommonArgs.cpp:233
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
bool exists(const Twine &Path)
Check whether a file exists. Provided for convenience.
virtual bool isPIEDefault() const =0
Test whether this toolchain defaults to PIE.
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:34
static std::string getR600TargetGPU(const ArgList &Args)
Get the (LLVM) name of the R600 gpu we are targeting.
Definition: CommonArgs.cpp:202
const char * getBaseInput() const
Definition: InputInfo.h:79
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:59
const StringRef Input
vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:90
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:148
static void collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args, SmallVectorImpl< StringRef > &SharedRuntimes, SmallVectorImpl< StringRef > &StaticRuntimes, SmallVectorImpl< StringRef > &NonWholeStaticRuntimes, SmallVectorImpl< StringRef > &HelperStaticRuntimes, SmallVectorImpl< StringRef > &RequiredSymbols)
Definition: CommonArgs.cpp:533
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:98
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:50