clang  8.0.0svn
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 "Arch/AArch64.h"
12 #include "Arch/ARM.h"
13 #include "Arch/Mips.h"
14 #include "Arch/PPC.h"
15 #include "Arch/SystemZ.h"
16 #include "Arch/X86.h"
17 #include "Hexagon.h"
18 #include "InputInfo.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 "clang/Driver/XRayArgs.h"
35 #include "llvm/ADT/STLExtras.h"
36 #include "llvm/ADT/SmallString.h"
37 #include "llvm/ADT/StringExtras.h"
38 #include "llvm/ADT/StringSwitch.h"
39 #include "llvm/ADT/Twine.h"
40 #include "llvm/Option/Arg.h"
41 #include "llvm/Option/ArgList.h"
42 #include "llvm/Option/Option.h"
43 #include "llvm/Support/CodeGen.h"
44 #include "llvm/Support/Compression.h"
45 #include "llvm/Support/Debug.h"
46 #include "llvm/Support/ErrorHandling.h"
47 #include "llvm/Support/FileSystem.h"
48 #include "llvm/Support/Host.h"
49 #include "llvm/Support/Path.h"
50 #include "llvm/Support/Process.h"
51 #include "llvm/Support/Program.h"
52 #include "llvm/Support/ScopedPrinter.h"
53 #include "llvm/Support/TargetParser.h"
54 #include "llvm/Support/YAMLParser.h"
55 
56 using namespace clang::driver;
57 using namespace clang::driver::tools;
58 using namespace clang;
59 using namespace llvm::opt;
60 
61 void tools::addPathIfExists(const Driver &D, const Twine &Path,
62  ToolChain::path_list &Paths) {
63  if (D.getVFS().exists(Path))
64  Paths.push_back(Path.str());
65 }
66 
67 void tools::handleTargetFeaturesGroup(const ArgList &Args,
68  std::vector<StringRef> &Features,
69  OptSpecifier Group) {
70  for (const Arg *A : Args.filtered(Group)) {
71  StringRef Name = A->getOption().getName();
72  A->claim();
73 
74  // Skip over "-m".
75  assert(Name.startswith("m") && "Invalid feature name.");
76  Name = Name.substr(1);
77 
78  bool IsNegative = Name.startswith("no-");
79  if (IsNegative)
80  Name = Name.substr(3);
81  Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
82  }
83 }
84 
85 void tools::addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,
86  const char *ArgName, const char *EnvVar) {
87  const char *DirList = ::getenv(EnvVar);
88  bool CombinedArg = false;
89 
90  if (!DirList)
91  return; // Nothing to do.
92 
93  StringRef Name(ArgName);
94  if (Name.equals("-I") || Name.equals("-L"))
95  CombinedArg = true;
96 
97  StringRef Dirs(DirList);
98  if (Dirs.empty()) // Empty string should not add '.'.
99  return;
100 
101  StringRef::size_type Delim;
102  while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {
103  if (Delim == 0) { // Leading colon.
104  if (CombinedArg) {
105  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
106  } else {
107  CmdArgs.push_back(ArgName);
108  CmdArgs.push_back(".");
109  }
110  } else {
111  if (CombinedArg) {
112  CmdArgs.push_back(
113  Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
114  } else {
115  CmdArgs.push_back(ArgName);
116  CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
117  }
118  }
119  Dirs = Dirs.substr(Delim + 1);
120  }
121 
122  if (Dirs.empty()) { // Trailing colon.
123  if (CombinedArg) {
124  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
125  } else {
126  CmdArgs.push_back(ArgName);
127  CmdArgs.push_back(".");
128  }
129  } else { // Add the last path.
130  if (CombinedArg) {
131  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
132  } else {
133  CmdArgs.push_back(ArgName);
134  CmdArgs.push_back(Args.MakeArgString(Dirs));
135  }
136  }
137 }
138 
139 void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
140  const ArgList &Args, ArgStringList &CmdArgs,
141  const JobAction &JA) {
142  const Driver &D = TC.getDriver();
143 
144  // Add extra linker input arguments which are not treated as inputs
145  // (constructed via -Xarch_).
146  Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
147 
148  for (const auto &II : Inputs) {
149  // If the current tool chain refers to an OpenMP or HIP offloading host, we
150  // should ignore inputs that refer to OpenMP or HIP offloading devices -
151  // they will be embedded according to a proper linker script.
152  if (auto *IA = II.getAction())
154  IA->isDeviceOffloading(Action::OFK_OpenMP)) ||
156  IA->isDeviceOffloading(Action::OFK_HIP)))
157  continue;
158 
159  if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
160  // Don't try to pass LLVM inputs unless we have native support.
161  D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
162 
163  // Add filenames immediately.
164  if (II.isFilename()) {
165  CmdArgs.push_back(II.getFilename());
166  continue;
167  }
168 
169  // Otherwise, this is a linker input argument.
170  const Arg &A = II.getInputArg();
171 
172  // Handle reserved library options.
173  if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
174  TC.AddCXXStdlibLibArgs(Args, CmdArgs);
175  else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
176  TC.AddCCKextLibArgs(Args, CmdArgs);
177  else if (A.getOption().matches(options::OPT_z)) {
178  // Pass -z prefix for gcc linker compatibility.
179  A.claim();
180  A.render(Args, CmdArgs);
181  } else {
182  A.renderAsInput(Args, CmdArgs);
183  }
184  }
185 
186  // LIBRARY_PATH - included following the user specified library paths.
187  // and only supported on native toolchains.
188  if (!TC.isCrossCompiling()) {
189  addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
190  }
191 }
192 
193 void tools::AddTargetFeature(const ArgList &Args,
194  std::vector<StringRef> &Features,
195  OptSpecifier OnOpt, OptSpecifier OffOpt,
196  StringRef FeatureName) {
197  if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {
198  if (A->getOption().matches(OnOpt))
199  Features.push_back(Args.MakeArgString("+" + FeatureName));
200  else
201  Features.push_back(Args.MakeArgString("-" + FeatureName));
202  }
203 }
204 
205 /// Get the (LLVM) name of the R600 gpu we are targeting.
206 static std::string getR600TargetGPU(const ArgList &Args) {
207  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
208  const char *GPUName = A->getValue();
209  return llvm::StringSwitch<const char *>(GPUName)
210  .Cases("rv630", "rv635", "r600")
211  .Cases("rv610", "rv620", "rs780", "rs880")
212  .Case("rv740", "rv770")
213  .Case("palm", "cedar")
214  .Cases("sumo", "sumo2", "sumo")
215  .Case("hemlock", "cypress")
216  .Case("aruba", "cayman")
217  .Default(GPUName);
218  }
219  return "";
220 }
221 
222 static std::string getNios2TargetCPU(const ArgList &Args) {
223  Arg *A = Args.getLastArg(options::OPT_mcpu_EQ);
224  if (!A)
225  A = Args.getLastArg(options::OPT_march_EQ);
226 
227  if (!A)
228  return "";
229 
230  const char *name = A->getValue();
231  return llvm::StringSwitch<const char *>(name)
232  .Case("r1", "nios2r1")
233  .Case("r2", "nios2r2")
234  .Default(name);
235 }
236 
237 static std::string getLanaiTargetCPU(const ArgList &Args) {
238  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
239  return A->getValue();
240  }
241  return "";
242 }
243 
244 /// Get the (LLVM) name of the WebAssembly cpu we are targeting.
245 static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
246  // If we have -mcpu=, use that.
247  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
248  StringRef CPU = A->getValue();
249 
250 #ifdef __wasm__
251  // Handle "native" by examining the host. "native" isn't meaningful when
252  // cross compiling, so only support this when the host is also WebAssembly.
253  if (CPU == "native")
254  return llvm::sys::getHostCPUName();
255 #endif
256 
257  return CPU;
258  }
259 
260  return "generic";
261 }
262 
263 std::string tools::getCPUName(const ArgList &Args, const llvm::Triple &T,
264  bool FromAs) {
265  Arg *A;
266 
267  switch (T.getArch()) {
268  default:
269  return "";
270 
271  case llvm::Triple::aarch64:
272  case llvm::Triple::aarch64_be:
273  return aarch64::getAArch64TargetCPU(Args, A);
274 
275  case llvm::Triple::arm:
276  case llvm::Triple::armeb:
277  case llvm::Triple::thumb:
278  case llvm::Triple::thumbeb: {
279  StringRef MArch, MCPU;
280  arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
281  return arm::getARMTargetCPU(MCPU, MArch, T);
282  }
283 
284  case llvm::Triple::avr:
285  if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))
286  return A->getValue();
287  return "";
288 
289  case llvm::Triple::nios2: {
290  return getNios2TargetCPU(Args);
291  }
292 
293  case llvm::Triple::mips:
294  case llvm::Triple::mipsel:
295  case llvm::Triple::mips64:
296  case llvm::Triple::mips64el: {
297  StringRef CPUName;
298  StringRef ABIName;
299  mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
300  return CPUName;
301  }
302 
303  case llvm::Triple::nvptx:
304  case llvm::Triple::nvptx64:
305  if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
306  return A->getValue();
307  return "";
308 
309  case llvm::Triple::ppc:
310  case llvm::Triple::ppc64:
311  case llvm::Triple::ppc64le: {
312  std::string TargetCPUName = ppc::getPPCTargetCPU(Args);
313  // LLVM may default to generating code for the native CPU,
314  // but, like gcc, we default to a more generic option for
315  // each architecture. (except on Darwin)
316  if (TargetCPUName.empty() && !T.isOSDarwin()) {
317  if (T.getArch() == llvm::Triple::ppc64)
318  TargetCPUName = "ppc64";
319  else if (T.getArch() == llvm::Triple::ppc64le)
320  TargetCPUName = "ppc64le";
321  else
322  TargetCPUName = "ppc";
323  }
324  return TargetCPUName;
325  }
326 
327  case llvm::Triple::bpfel:
328  case llvm::Triple::bpfeb:
329  case llvm::Triple::sparc:
330  case llvm::Triple::sparcel:
331  case llvm::Triple::sparcv9:
332  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
333  return A->getValue();
334  return "";
335 
336  case llvm::Triple::x86:
337  case llvm::Triple::x86_64:
338  return x86::getX86TargetCPU(Args, T);
339 
340  case llvm::Triple::hexagon:
341  return "hexagon" +
343 
344  case llvm::Triple::lanai:
345  return getLanaiTargetCPU(Args);
346 
347  case llvm::Triple::systemz:
348  return systemz::getSystemZTargetCPU(Args);
349 
350  case llvm::Triple::r600:
351  case llvm::Triple::amdgcn:
352  return getR600TargetGPU(Args);
353 
354  case llvm::Triple::wasm32:
355  case llvm::Triple::wasm64:
356  return getWebAssemblyTargetCPU(Args);
357  }
358 }
359 
360 unsigned tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
361  unsigned Parallelism = 0;
362  Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
363  if (LtoJobsArg &&
364  StringRef(LtoJobsArg->getValue()).getAsInteger(10, Parallelism))
365  D.Diag(diag::err_drv_invalid_int_value) << LtoJobsArg->getAsString(Args)
366  << LtoJobsArg->getValue();
367  return Parallelism;
368 }
369 
370 // CloudABI uses -ffunction-sections and -fdata-sections by default.
371 bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
372  return Triple.getOS() == llvm::Triple::CloudABI;
373 }
374 
375 void tools::AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
376  ArgStringList &CmdArgs, const InputInfo &Output,
377  const InputInfo &Input, bool IsThinLTO) {
378  // Tell the linker to load the plugin. This has to come before AddLinkerInputs
379  // as gold requires -plugin to come before any -plugin-opt that -Wl might
380  // forward.
381  CmdArgs.push_back("-plugin");
382 
383 #if defined(_WIN32)
384  const char *Suffix = ".dll";
385 #elif defined(__APPLE__)
386  const char *Suffix = ".dylib";
387 #else
388  const char *Suffix = ".so";
389 #endif
390 
391  SmallString<1024> Plugin;
392  llvm::sys::path::native(Twine(ToolChain.getDriver().Dir) +
393  "/../lib" CLANG_LIBDIR_SUFFIX "/LLVMgold" +
394  Suffix,
395  Plugin);
396  CmdArgs.push_back(Args.MakeArgString(Plugin));
397 
398  // Try to pass driver level flags relevant to LTO code generation down to
399  // the plugin.
400 
401  // Handle flags for selecting CPU variants.
402  std::string CPU = getCPUName(Args, ToolChain.getTriple());
403  if (!CPU.empty())
404  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
405 
406  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
407  StringRef OOpt;
408  if (A->getOption().matches(options::OPT_O4) ||
409  A->getOption().matches(options::OPT_Ofast))
410  OOpt = "3";
411  else if (A->getOption().matches(options::OPT_O))
412  OOpt = A->getValue();
413  else if (A->getOption().matches(options::OPT_O0))
414  OOpt = "0";
415  if (!OOpt.empty())
416  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
417  }
418 
419  if (Args.hasArg(options::OPT_gsplit_dwarf)) {
420  CmdArgs.push_back(
421  Args.MakeArgString(Twine("-plugin-opt=dwo_dir=") +
422  Output.getFilename() + "_dwo"));
423  }
424 
425  if (IsThinLTO)
426  CmdArgs.push_back("-plugin-opt=thinlto");
427 
428  if (unsigned Parallelism = getLTOParallelism(Args, ToolChain.getDriver()))
429  CmdArgs.push_back(
430  Args.MakeArgString("-plugin-opt=jobs=" + Twine(Parallelism)));
431 
432  // If an explicit debugger tuning argument appeared, pass it along.
433  if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
434  options::OPT_ggdbN_Group)) {
435  if (A->getOption().matches(options::OPT_glldb))
436  CmdArgs.push_back("-plugin-opt=-debugger-tune=lldb");
437  else if (A->getOption().matches(options::OPT_gsce))
438  CmdArgs.push_back("-plugin-opt=-debugger-tune=sce");
439  else
440  CmdArgs.push_back("-plugin-opt=-debugger-tune=gdb");
441  }
442 
443  bool UseSeparateSections =
445 
446  if (Args.hasFlag(options::OPT_ffunction_sections,
447  options::OPT_fno_function_sections, UseSeparateSections)) {
448  CmdArgs.push_back("-plugin-opt=-function-sections");
449  }
450 
451  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
452  UseSeparateSections)) {
453  CmdArgs.push_back("-plugin-opt=-data-sections");
454  }
455 
456  if (Arg *A = getLastProfileSampleUseArg(Args)) {
457  StringRef FName = A->getValue();
458  if (!llvm::sys::fs::exists(FName))
459  ToolChain.getDriver().Diag(diag::err_drv_no_such_file) << FName;
460  else
461  CmdArgs.push_back(
462  Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
463  }
464 
465  // Need this flag to turn on new pass manager via Gold plugin.
466  if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
467  options::OPT_fno_experimental_new_pass_manager,
468  /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER)) {
469  CmdArgs.push_back("-plugin-opt=new-pass-manager");
470  }
471 
472  // Setup statistics file output.
473  SmallString<128> StatsFile =
474  getStatsFileName(Args, Output, Input, ToolChain.getDriver());
475  if (!StatsFile.empty())
476  CmdArgs.push_back(
477  Args.MakeArgString(Twine("-plugin-opt=stats-file=") + StatsFile));
478 }
479 
480 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
481  ArgStringList &CmdArgs) {
482  if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
483  options::OPT_fno_rtlib_add_rpath, false))
484  return;
485 
486  std::string CandidateRPath = TC.getArchSpecificLibPath();
487  if (TC.getVFS().exists(CandidateRPath)) {
488  CmdArgs.push_back("-rpath");
489  CmdArgs.push_back(Args.MakeArgString(CandidateRPath.c_str()));
490  }
491 }
492 
493 bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
494  const ArgList &Args, bool IsOffloadingHost,
495  bool GompNeedsRT) {
496  if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
497  options::OPT_fno_openmp, false))
498  return false;
499 
500  switch (TC.getDriver().getOpenMPRuntime(Args)) {
501  case Driver::OMPRT_OMP:
502  CmdArgs.push_back("-lomp");
503  break;
504  case Driver::OMPRT_GOMP:
505  CmdArgs.push_back("-lgomp");
506 
507  if (GompNeedsRT)
508  CmdArgs.push_back("-lrt");
509  break;
510  case Driver::OMPRT_IOMP5:
511  CmdArgs.push_back("-liomp5");
512  break;
514  // Already diagnosed.
515  return false;
516  }
517 
518  if (IsOffloadingHost)
519  CmdArgs.push_back("-lomptarget");
520 
521  addArchSpecificRPath(TC, Args, CmdArgs);
522 
523  return true;
524 }
525 
526 static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
527  ArgStringList &CmdArgs, StringRef Sanitizer,
528  bool IsShared, bool IsWhole) {
529  // Wrap any static runtimes that must be forced into executable in
530  // whole-archive.
531  if (IsWhole) CmdArgs.push_back("--whole-archive");
532  CmdArgs.push_back(TC.getCompilerRTArgString(Args, Sanitizer, IsShared));
533  if (IsWhole) CmdArgs.push_back("--no-whole-archive");
534 
535  if (IsShared) {
536  addArchSpecificRPath(TC, Args, CmdArgs);
537  }
538 }
539 
540 // Tries to use a file with the list of dynamic symbols that need to be exported
541 // from the runtime library. Returns true if the file was found.
542 static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
543  ArgStringList &CmdArgs,
544  StringRef Sanitizer) {
545  // Solaris ld defaults to --export-dynamic behaviour but doesn't support
546  // the option, so don't try to pass it.
547  if (TC.getTriple().getOS() == llvm::Triple::Solaris)
548  return true;
549  // Myriad is static linking only. Furthermore, some versions of its
550  // linker have the bug where --export-dynamic overrides -static, so
551  // don't use --export-dynamic on that platform.
552  if (TC.getTriple().getVendor() == llvm::Triple::Myriad)
553  return true;
554  SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
555  if (llvm::sys::fs::exists(SanRT + ".syms")) {
556  CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
557  return true;
558  }
559  return false;
560 }
561 
562 void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
563  ArgStringList &CmdArgs) {
564  // Force linking against the system libraries sanitizers depends on
565  // (see PR15823 why this is necessary).
566  CmdArgs.push_back("--no-as-needed");
567  // There's no libpthread or librt on RTEMS & Android.
568  if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&
569  !TC.getTriple().isAndroid()) {
570  CmdArgs.push_back("-lpthread");
571  if (TC.getTriple().getOS() != llvm::Triple::OpenBSD)
572  CmdArgs.push_back("-lrt");
573  }
574  CmdArgs.push_back("-lm");
575  // There's no libdl on all OSes.
576  if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
577  TC.getTriple().getOS() != llvm::Triple::NetBSD &&
578  TC.getTriple().getOS() != llvm::Triple::OpenBSD &&
579  TC.getTriple().getOS() != llvm::Triple::RTEMS)
580  CmdArgs.push_back("-ldl");
581  // Required for backtrace on some OSes
582  if (TC.getTriple().getOS() == llvm::Triple::NetBSD ||
583  TC.getTriple().getOS() == llvm::Triple::FreeBSD)
584  CmdArgs.push_back("-lexecinfo");
585 }
586 
587 static void
588 collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
589  SmallVectorImpl<StringRef> &SharedRuntimes,
590  SmallVectorImpl<StringRef> &StaticRuntimes,
591  SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
592  SmallVectorImpl<StringRef> &HelperStaticRuntimes,
593  SmallVectorImpl<StringRef> &RequiredSymbols) {
594  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
595  // Collect shared runtimes.
596  if (SanArgs.needsSharedRt()) {
597  if (SanArgs.needsAsanRt()) {
598  SharedRuntimes.push_back("asan");
599  if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
600  HelperStaticRuntimes.push_back("asan-preinit");
601  }
602  if (SanArgs.needsUbsanRt()) {
603  if (SanArgs.requiresMinimalRuntime())
604  SharedRuntimes.push_back("ubsan_minimal");
605  else
606  SharedRuntimes.push_back("ubsan_standalone");
607  }
608  if (SanArgs.needsScudoRt()) {
609  if (SanArgs.requiresMinimalRuntime())
610  SharedRuntimes.push_back("scudo_minimal");
611  else
612  SharedRuntimes.push_back("scudo");
613  }
614  if (SanArgs.needsHwasanRt())
615  SharedRuntimes.push_back("hwasan");
616  }
617 
618  // The stats_client library is also statically linked into DSOs.
619  if (SanArgs.needsStatsRt())
620  StaticRuntimes.push_back("stats_client");
621 
622  // Collect static runtimes.
623  if (Args.hasArg(options::OPT_shared) || SanArgs.needsSharedRt()) {
624  // Don't link static runtimes into DSOs or if -shared-libasan.
625  return;
626  }
627  if (SanArgs.needsAsanRt()) {
628  StaticRuntimes.push_back("asan");
629  if (SanArgs.linkCXXRuntimes())
630  StaticRuntimes.push_back("asan_cxx");
631  }
632 
633  if (SanArgs.needsHwasanRt()) {
634  StaticRuntimes.push_back("hwasan");
635  if (SanArgs.linkCXXRuntimes())
636  StaticRuntimes.push_back("hwasan_cxx");
637  }
638  if (SanArgs.needsDfsanRt())
639  StaticRuntimes.push_back("dfsan");
640  if (SanArgs.needsLsanRt())
641  StaticRuntimes.push_back("lsan");
642  if (SanArgs.needsMsanRt()) {
643  StaticRuntimes.push_back("msan");
644  if (SanArgs.linkCXXRuntimes())
645  StaticRuntimes.push_back("msan_cxx");
646  }
647  if (SanArgs.needsTsanRt()) {
648  StaticRuntimes.push_back("tsan");
649  if (SanArgs.linkCXXRuntimes())
650  StaticRuntimes.push_back("tsan_cxx");
651  }
652  if (SanArgs.needsUbsanRt()) {
653  if (SanArgs.requiresMinimalRuntime()) {
654  StaticRuntimes.push_back("ubsan_minimal");
655  } else {
656  StaticRuntimes.push_back("ubsan_standalone");
657  if (SanArgs.linkCXXRuntimes())
658  StaticRuntimes.push_back("ubsan_standalone_cxx");
659  }
660  }
661  if (SanArgs.needsSafeStackRt()) {
662  NonWholeStaticRuntimes.push_back("safestack");
663  RequiredSymbols.push_back("__safestack_init");
664  }
665  if (SanArgs.needsCfiRt())
666  StaticRuntimes.push_back("cfi");
667  if (SanArgs.needsCfiDiagRt()) {
668  StaticRuntimes.push_back("cfi_diag");
669  if (SanArgs.linkCXXRuntimes())
670  StaticRuntimes.push_back("ubsan_standalone_cxx");
671  }
672  if (SanArgs.needsStatsRt()) {
673  NonWholeStaticRuntimes.push_back("stats");
674  RequiredSymbols.push_back("__sanitizer_stats_register");
675  }
676  if (SanArgs.needsEsanRt())
677  StaticRuntimes.push_back("esan");
678  if (SanArgs.needsScudoRt()) {
679  if (SanArgs.requiresMinimalRuntime()) {
680  StaticRuntimes.push_back("scudo_minimal");
681  if (SanArgs.linkCXXRuntimes())
682  StaticRuntimes.push_back("scudo_cxx_minimal");
683  } else {
684  StaticRuntimes.push_back("scudo");
685  if (SanArgs.linkCXXRuntimes())
686  StaticRuntimes.push_back("scudo_cxx");
687  }
688  }
689 }
690 
691 // Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
692 // C runtime, etc). Returns true if sanitizer system deps need to be linked in.
693 bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
694  ArgStringList &CmdArgs) {
695  SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
696  NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
697  collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
698  NonWholeStaticRuntimes, HelperStaticRuntimes,
699  RequiredSymbols);
700 
701  // Inject libfuzzer dependencies.
702  if (TC.getSanitizerArgs().needsFuzzer()
703  && !Args.hasArg(options::OPT_shared)) {
704 
705  addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
706  if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx))
707  TC.AddCXXStdlibLibArgs(Args, CmdArgs);
708  }
709 
710  for (auto RT : SharedRuntimes)
711  addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
712  for (auto RT : HelperStaticRuntimes)
713  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
714  bool AddExportDynamic = false;
715  for (auto RT : StaticRuntimes) {
716  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
717  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
718  }
719  for (auto RT : NonWholeStaticRuntimes) {
720  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
721  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
722  }
723  for (auto S : RequiredSymbols) {
724  CmdArgs.push_back("-u");
725  CmdArgs.push_back(Args.MakeArgString(S));
726  }
727  // If there is a static runtime with no dynamic list, force all the symbols
728  // to be dynamic to be sure we export sanitizer interface functions.
729  if (AddExportDynamic)
730  CmdArgs.push_back("--export-dynamic");
731 
732  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
733  if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
734  CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
735 
736  return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
737 }
738 
739 bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {
740  if (Args.hasArg(options::OPT_shared))
741  return false;
742 
743  if (TC.getXRayArgs().needsXRayRt()) {
744  CmdArgs.push_back("-whole-archive");
745  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray", false));
746  for (const auto &Mode : TC.getXRayArgs().modeList())
747  CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode, false));
748  CmdArgs.push_back("-no-whole-archive");
749  return true;
750  }
751 
752  return false;
753 }
754 
755 void tools::linkXRayRuntimeDeps(const ToolChain &TC, ArgStringList &CmdArgs) {
756  CmdArgs.push_back("--no-as-needed");
757  CmdArgs.push_back("-lpthread");
758  if (TC.getTriple().getOS() != llvm::Triple::OpenBSD)
759  CmdArgs.push_back("-lrt");
760  CmdArgs.push_back("-lm");
761 
762  if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
763  TC.getTriple().getOS() != llvm::Triple::NetBSD &&
764  TC.getTriple().getOS() != llvm::Triple::OpenBSD)
765  CmdArgs.push_back("-ldl");
766 }
767 
768 bool tools::areOptimizationsEnabled(const ArgList &Args) {
769  // Find the last -O arg and see if it is non-zero.
770  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
771  return !A->getOption().matches(options::OPT_O0);
772  // Defaults to -O0.
773  return false;
774 }
775 
776 const char *tools::SplitDebugName(const ArgList &Args, const InputInfo &Input) {
777  Arg *FinalOutput = Args.getLastArg(options::OPT_o);
778  if (FinalOutput && Args.hasArg(options::OPT_c)) {
779  SmallString<128> T(FinalOutput->getValue());
780  llvm::sys::path::replace_extension(T, "dwo");
781  return Args.MakeArgString(T);
782  } else {
783  // Use the compilation dir.
785  Args.getLastArgValue(options::OPT_fdebug_compilation_dir));
786  SmallString<128> F(llvm::sys::path::stem(Input.getBaseInput()));
787  llvm::sys::path::replace_extension(F, "dwo");
788  T += F;
789  return Args.MakeArgString(F);
790  }
791 }
792 
793 void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
794  const JobAction &JA, const ArgList &Args,
795  const InputInfo &Output, const char *OutFile) {
796  ArgStringList ExtractArgs;
797  ExtractArgs.push_back("--extract-dwo");
798 
799  ArgStringList StripArgs;
800  StripArgs.push_back("--strip-dwo");
801 
802  // Grabbing the output of the earlier compile step.
803  StripArgs.push_back(Output.getFilename());
804  ExtractArgs.push_back(Output.getFilename());
805  ExtractArgs.push_back(OutFile);
806 
807  const char *Exec =
808  Args.MakeArgString(TC.GetProgramPath(CLANG_DEFAULT_OBJCOPY));
809  InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
810 
811  // First extract the dwo sections.
812  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, ExtractArgs, II));
813 
814  // Then remove them from the original .o file.
815  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, StripArgs, II));
816 }
817 
818 // Claim options we don't want to warn if they are unused. We do this for
819 // options that build systems might add but are unused when assembling or only
820 // running the preprocessor for example.
821 void tools::claimNoWarnArgs(const ArgList &Args) {
822  // Don't warn about unused -f(no-)?lto. This can happen when we're
823  // preprocessing, precompiling or assembling.
824  Args.ClaimAllArgs(options::OPT_flto_EQ);
825  Args.ClaimAllArgs(options::OPT_flto);
826  Args.ClaimAllArgs(options::OPT_fno_lto);
827 }
828 
829 Arg *tools::getLastProfileUseArg(const ArgList &Args) {
830  auto *ProfileUseArg = Args.getLastArg(
831  options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
832  options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
833  options::OPT_fno_profile_instr_use);
834 
835  if (ProfileUseArg &&
836  ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
837  ProfileUseArg = nullptr;
838 
839  return ProfileUseArg;
840 }
841 
842 Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
843  auto *ProfileSampleUseArg = Args.getLastArg(
844  options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
845  options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
846  options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
847 
848  if (ProfileSampleUseArg &&
849  (ProfileSampleUseArg->getOption().matches(
850  options::OPT_fno_profile_sample_use) ||
851  ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
852  return nullptr;
853 
854  return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
855  options::OPT_fauto_profile_EQ);
856 }
857 
858 /// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
859 /// smooshes them together with platform defaults, to decide whether
860 /// this compile should be using PIC mode or not. Returns a tuple of
861 /// (RelocationModel, PICLevel, IsPIE).
862 std::tuple<llvm::Reloc::Model, unsigned, bool>
863 tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
864  const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
865  const llvm::Triple &Triple = ToolChain.getTriple();
866 
867  bool PIE = ToolChain.isPIEDefault();
868  bool PIC = PIE || ToolChain.isPICDefault();
869  // The Darwin/MachO default to use PIC does not apply when using -static.
870  if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))
871  PIE = PIC = false;
872  bool IsPICLevelTwo = PIC;
873 
874  bool KernelOrKext =
875  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
876 
877  // Android-specific defaults for PIC/PIE
878  if (Triple.isAndroid()) {
879  switch (Triple.getArch()) {
880  case llvm::Triple::arm:
881  case llvm::Triple::armeb:
882  case llvm::Triple::thumb:
883  case llvm::Triple::thumbeb:
884  case llvm::Triple::aarch64:
885  case llvm::Triple::mips:
886  case llvm::Triple::mipsel:
887  case llvm::Triple::mips64:
888  case llvm::Triple::mips64el:
889  PIC = true; // "-fpic"
890  break;
891 
892  case llvm::Triple::x86:
893  case llvm::Triple::x86_64:
894  PIC = true; // "-fPIC"
895  IsPICLevelTwo = true;
896  break;
897 
898  default:
899  break;
900  }
901  }
902 
903  // OpenBSD-specific defaults for PIE
904  if (Triple.getOS() == llvm::Triple::OpenBSD) {
905  switch (ToolChain.getArch()) {
906  case llvm::Triple::arm:
907  case llvm::Triple::aarch64:
908  case llvm::Triple::mips64:
909  case llvm::Triple::mips64el:
910  case llvm::Triple::x86:
911  case llvm::Triple::x86_64:
912  IsPICLevelTwo = false; // "-fpie"
913  break;
914 
915  case llvm::Triple::ppc:
916  case llvm::Triple::sparc:
917  case llvm::Triple::sparcel:
918  case llvm::Triple::sparcv9:
919  IsPICLevelTwo = true; // "-fPIE"
920  break;
921 
922  default:
923  break;
924  }
925  }
926 
927  // AMDGPU-specific defaults for PIC.
928  if (Triple.getArch() == llvm::Triple::amdgcn)
929  PIC = true;
930 
931  // The last argument relating to either PIC or PIE wins, and no
932  // other argument is used. If the last argument is any flavor of the
933  // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
934  // option implicitly enables PIC at the same level.
935  Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
936  options::OPT_fpic, options::OPT_fno_pic,
937  options::OPT_fPIE, options::OPT_fno_PIE,
938  options::OPT_fpie, options::OPT_fno_pie);
939  if (Triple.isOSWindows() && LastPICArg &&
940  LastPICArg ==
941  Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
942  options::OPT_fPIE, options::OPT_fpie)) {
943  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
944  << LastPICArg->getSpelling() << Triple.str();
945  if (Triple.getArch() == llvm::Triple::x86_64)
946  return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
947  return std::make_tuple(llvm::Reloc::Static, 0U, false);
948  }
949 
950  // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
951  // is forced, then neither PIC nor PIE flags will have no effect.
952  if (!ToolChain.isPICDefaultForced()) {
953  if (LastPICArg) {
954  Option O = LastPICArg->getOption();
955  if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
956  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
957  PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
958  PIC =
959  PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
960  IsPICLevelTwo =
961  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
962  } else {
963  PIE = PIC = false;
964  if (EffectiveTriple.isPS4CPU()) {
965  Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
966  StringRef Model = ModelArg ? ModelArg->getValue() : "";
967  if (Model != "kernel") {
968  PIC = true;
969  ToolChain.getDriver().Diag(diag::warn_drv_ps4_force_pic)
970  << LastPICArg->getSpelling();
971  }
972  }
973  }
974  }
975  }
976 
977  // Introduce a Darwin and PS4-specific hack. If the default is PIC, but the
978  // PIC level would've been set to level 1, force it back to level 2 PIC
979  // instead.
980  if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS4CPU()))
981  IsPICLevelTwo |= ToolChain.isPICDefault();
982 
983  // This kernel flags are a trump-card: they will disable PIC/PIE
984  // generation, independent of the argument order.
985  if (KernelOrKext &&
986  ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
987  !EffectiveTriple.isWatchOS()))
988  PIC = PIE = false;
989 
990  if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
991  // This is a very special mode. It trumps the other modes, almost no one
992  // uses it, and it isn't even valid on any OS but Darwin.
993  if (!Triple.isOSDarwin())
994  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
995  << A->getSpelling() << Triple.str();
996 
997  // FIXME: Warn when this flag trumps some other PIC or PIE flag.
998 
999  // Only a forced PIC mode can cause the actual compile to have PIC defines
1000  // etc., no flags are sufficient. This behavior was selected to closely
1001  // match that of llvm-gcc and Apple GCC before that.
1002  PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();
1003 
1004  return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
1005  }
1006 
1007  bool EmbeddedPISupported;
1008  switch (Triple.getArch()) {
1009  case llvm::Triple::arm:
1010  case llvm::Triple::armeb:
1011  case llvm::Triple::thumb:
1012  case llvm::Triple::thumbeb:
1013  EmbeddedPISupported = true;
1014  break;
1015  default:
1016  EmbeddedPISupported = false;
1017  break;
1018  }
1019 
1020  bool ROPI = false, RWPI = false;
1021  Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
1022  if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
1023  if (!EmbeddedPISupported)
1024  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1025  << LastROPIArg->getSpelling() << Triple.str();
1026  ROPI = true;
1027  }
1028  Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
1029  if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
1030  if (!EmbeddedPISupported)
1031  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1032  << LastRWPIArg->getSpelling() << Triple.str();
1033  RWPI = true;
1034  }
1035 
1036  // ROPI and RWPI are not compatible with PIC or PIE.
1037  if ((ROPI || RWPI) && (PIC || PIE))
1038  ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
1039 
1040  if (Triple.isMIPS()) {
1041  StringRef CPUName;
1042  StringRef ABIName;
1043  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1044  // When targeting the N64 ABI, PIC is the default, except in the case
1045  // when the -mno-abicalls option is used. In that case we exit
1046  // at next check regardless of PIC being set below.
1047  if (ABIName == "n64")
1048  PIC = true;
1049  // When targettng MIPS with -mno-abicalls, it's always static.
1050  if(Args.hasArg(options::OPT_mno_abicalls))
1051  return std::make_tuple(llvm::Reloc::Static, 0U, false);
1052  // Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,
1053  // does not use PIC level 2 for historical reasons.
1054  IsPICLevelTwo = false;
1055  }
1056 
1057  if (PIC)
1058  return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
1059 
1060  llvm::Reloc::Model RelocM = llvm::Reloc::Static;
1061  if (ROPI && RWPI)
1062  RelocM = llvm::Reloc::ROPI_RWPI;
1063  else if (ROPI)
1064  RelocM = llvm::Reloc::ROPI;
1065  else if (RWPI)
1066  RelocM = llvm::Reloc::RWPI;
1067 
1068  return std::make_tuple(RelocM, 0U, false);
1069 }
1070 
1071 // `-falign-functions` indicates that the functions should be aligned to a
1072 // 16-byte boundary.
1073 //
1074 // `-falign-functions=1` is the same as `-fno-align-functions`.
1075 //
1076 // The scalar `n` in `-falign-functions=n` must be an integral value between
1077 // [0, 65536]. If the value is not a power-of-two, it will be rounded up to
1078 // the nearest power-of-two.
1079 //
1080 // If we return `0`, the frontend will default to the backend's preferred
1081 // alignment.
1082 //
1083 // NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`
1084 // to mean `-falign-functions=16`. GCC defaults to the backend's preferred
1085 // alignment. For unaligned functions, we default to the backend's preferred
1086 // alignment.
1087 unsigned tools::ParseFunctionAlignment(const ToolChain &TC,
1088  const ArgList &Args) {
1089  const Arg *A = Args.getLastArg(options::OPT_falign_functions,
1090  options::OPT_falign_functions_EQ,
1091  options::OPT_fno_align_functions);
1092  if (!A || A->getOption().matches(options::OPT_fno_align_functions))
1093  return 0;
1094 
1095  if (A->getOption().matches(options::OPT_falign_functions))
1096  return 0;
1097 
1098  unsigned Value = 0;
1099  if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
1100  TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1101  << A->getAsString(Args) << A->getValue();
1102  return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;
1103 }
1104 
1105 void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
1106  ArgStringList &CmdArgs) {
1107  llvm::Reloc::Model RelocationModel;
1108  unsigned PICLevel;
1109  bool IsPIE;
1110  std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
1111 
1112  if (RelocationModel != llvm::Reloc::Static)
1113  CmdArgs.push_back("-KPIC");
1114 }
1115 
1116 /// Determine whether Objective-C automated reference counting is
1117 /// enabled.
1118 bool tools::isObjCAutoRefCount(const ArgList &Args) {
1119  return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
1120 }
1121 
1122 static void AddLibgcc(const llvm::Triple &Triple, const Driver &D,
1123  ArgStringList &CmdArgs, const ArgList &Args) {
1124  bool isAndroid = Triple.isAndroid();
1125  bool isCygMing = Triple.isOSCygMing();
1126  bool IsIAMCU = Triple.isOSIAMCU();
1127  bool StaticLibgcc = Args.hasArg(options::OPT_static_libgcc) ||
1128  Args.hasArg(options::OPT_static);
1129  if (!D.CCCIsCXX())
1130  CmdArgs.push_back("-lgcc");
1131 
1132  if (StaticLibgcc || isAndroid) {
1133  if (D.CCCIsCXX())
1134  CmdArgs.push_back("-lgcc");
1135  } else {
1136  if (!D.CCCIsCXX() && !isCygMing)
1137  CmdArgs.push_back("--as-needed");
1138  CmdArgs.push_back("-lgcc_s");
1139  if (!D.CCCIsCXX() && !isCygMing)
1140  CmdArgs.push_back("--no-as-needed");
1141  }
1142 
1143  if (StaticLibgcc && !isAndroid && !IsIAMCU)
1144  CmdArgs.push_back("-lgcc_eh");
1145  else if (!Args.hasArg(options::OPT_shared) && D.CCCIsCXX())
1146  CmdArgs.push_back("-lgcc");
1147 
1148  // According to Android ABI, we have to link with libdl if we are
1149  // linking with non-static libgcc.
1150  //
1151  // NOTE: This fixes a link error on Android MIPS as well. The non-static
1152  // libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl.
1153  if (isAndroid && !StaticLibgcc)
1154  CmdArgs.push_back("-ldl");
1155 }
1156 
1157 void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
1158  ArgStringList &CmdArgs, const ArgList &Args) {
1159  // Make use of compiler-rt if --rtlib option is used
1161 
1162  switch (RLT) {
1164  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
1165  break;
1166  case ToolChain::RLT_Libgcc:
1167  // Make sure libgcc is not used under MSVC environment by default
1168  if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1169  // Issue error diagnostic if libgcc is explicitly specified
1170  // through command line as --rtlib option argument.
1171  if (Args.hasArg(options::OPT_rtlib_EQ)) {
1172  TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
1173  << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC";
1174  }
1175  } else
1176  AddLibgcc(TC.getTriple(), D, CmdArgs, Args);
1177  break;
1178  }
1179 }
1180 
1181 /// Add OpenMP linker script arguments at the end of the argument list so that
1182 /// the fat binary is built by embedding each of the device images into the
1183 /// host. The linker script also defines a few symbols required by the code
1184 /// generation so that the images can be easily retrieved at runtime by the
1185 /// offloading library. This should be used only in tool chains that support
1186 /// linker scripts.
1187 void tools::AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C,
1188  const InputInfo &Output,
1189  const InputInfoList &Inputs,
1190  const ArgList &Args, ArgStringList &CmdArgs,
1191  const JobAction &JA) {
1192 
1193  // If this is not an OpenMP host toolchain, we don't need to do anything.
1195  return;
1196 
1197  // Create temporary linker script. Keep it if save-temps is enabled.
1198  const char *LKS;
1199  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
1200  if (C.getDriver().isSaveTempsEnabled()) {
1201  llvm::sys::path::replace_extension(Name, "lk");
1202  LKS = C.getArgs().MakeArgString(Name.c_str());
1203  } else {
1204  llvm::sys::path::replace_extension(Name, "");
1205  Name = C.getDriver().GetTemporaryPath(Name, "lk");
1206  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
1207  }
1208 
1209  // Add linker script option to the command.
1210  CmdArgs.push_back("-T");
1211  CmdArgs.push_back(LKS);
1212 
1213  // Create a buffer to write the contents of the linker script.
1214  std::string LksBuffer;
1215  llvm::raw_string_ostream LksStream(LksBuffer);
1216 
1217  // Get the OpenMP offload tool chains so that we can extract the triple
1218  // associated with each device input.
1219  auto OpenMPToolChains = C.getOffloadToolChains<Action::OFK_OpenMP>();
1220  assert(OpenMPToolChains.first != OpenMPToolChains.second &&
1221  "No OpenMP toolchains??");
1222 
1223  // Track the input file name and device triple in order to build the script,
1224  // inserting binaries in the designated sections.
1226 
1227  // Add commands to embed target binaries. We ensure that each section and
1228  // image is 16-byte aligned. This is not mandatory, but increases the
1229  // likelihood of data to be aligned with a cache block in several main host
1230  // machines.
1231  LksStream << "/*\n";
1232  LksStream << " OpenMP Offload Linker Script\n";
1233  LksStream << " *** Automatically generated by Clang ***\n";
1234  LksStream << "*/\n";
1235  LksStream << "TARGET(binary)\n";
1236  auto DTC = OpenMPToolChains.first;
1237  for (auto &II : Inputs) {
1238  const Action *A = II.getAction();
1239  // Is this a device linking action?
1240  if (A && isa<LinkJobAction>(A) &&
1242  assert(DTC != OpenMPToolChains.second &&
1243  "More device inputs than device toolchains??");
1244  InputBinaryInfo.push_back(std::make_pair(
1245  DTC->second->getTriple().normalize(), II.getFilename()));
1246  ++DTC;
1247  LksStream << "INPUT(" << II.getFilename() << ")\n";
1248  }
1249  }
1250 
1251  assert(DTC == OpenMPToolChains.second &&
1252  "Less device inputs than device toolchains??");
1253 
1254  LksStream << "SECTIONS\n";
1255  LksStream << "{\n";
1256 
1257  // Put each target binary into a separate section.
1258  for (const auto &BI : InputBinaryInfo) {
1259  LksStream << " .omp_offloading." << BI.first << " :\n";
1260  LksStream << " ALIGN(0x10)\n";
1261  LksStream << " {\n";
1262  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_start." << BI.first
1263  << " = .);\n";
1264  LksStream << " " << BI.second << "\n";
1265  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_end." << BI.first
1266  << " = .);\n";
1267  LksStream << " }\n";
1268  }
1269 
1270  // Add commands to define host entries begin and end. We use 1-byte subalign
1271  // so that the linker does not add any padding and the elements in this
1272  // section form an array.
1273  LksStream << " .omp_offloading.entries :\n";
1274  LksStream << " ALIGN(0x10)\n";
1275  LksStream << " SUBALIGN(0x01)\n";
1276  LksStream << " {\n";
1277  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_begin = .);\n";
1278  LksStream << " *(.omp_offloading.entries)\n";
1279  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_end = .);\n";
1280  LksStream << " }\n";
1281  LksStream << "}\n";
1282  LksStream << "INSERT BEFORE .data\n";
1283  LksStream.flush();
1284 
1285  // Dump the contents of the linker script if the user requested that. We
1286  // support this option to enable testing of behavior with -###.
1287  if (C.getArgs().hasArg(options::OPT_fopenmp_dump_offload_linker_script))
1288  llvm::errs() << LksBuffer;
1289 
1290  // If this is a dry run, do not create the linker script file.
1291  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1292  return;
1293 
1294  // Open script file and write the contents.
1295  std::error_code EC;
1296  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
1297 
1298  if (EC) {
1299  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1300  return;
1301  }
1302 
1303  Lksf << LksBuffer;
1304 }
1305 
1306 /// Add HIP linker script arguments at the end of the argument list so that
1307 /// the fat binary is built by embedding the device images into the host. The
1308 /// linker script also defines a symbol required by the code generation so that
1309 /// the image can be retrieved at runtime. This should be used only in tool
1310 /// chains that support linker scripts.
1311 void tools::AddHIPLinkerScript(const ToolChain &TC, Compilation &C,
1312  const InputInfo &Output,
1313  const InputInfoList &Inputs, const ArgList &Args,
1314  ArgStringList &CmdArgs, const JobAction &JA,
1315  const Tool &T) {
1316 
1317  // If this is not a HIP host toolchain, we don't need to do anything.
1319  return;
1320 
1321  // Create temporary linker script. Keep it if save-temps is enabled.
1322  const char *LKS;
1323  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
1324  if (C.getDriver().isSaveTempsEnabled()) {
1325  llvm::sys::path::replace_extension(Name, "lk");
1326  LKS = C.getArgs().MakeArgString(Name.c_str());
1327  } else {
1328  llvm::sys::path::replace_extension(Name, "");
1329  Name = C.getDriver().GetTemporaryPath(Name, "lk");
1330  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
1331  }
1332 
1333  // Add linker script option to the command.
1334  CmdArgs.push_back("-T");
1335  CmdArgs.push_back(LKS);
1336 
1337  // Create a buffer to write the contents of the linker script.
1338  std::string LksBuffer;
1339  llvm::raw_string_ostream LksStream(LksBuffer);
1340 
1341  // Get the HIP offload tool chain.
1342  auto *HIPTC = static_cast<const toolchains::CudaToolChain *>(
1344  assert(HIPTC->getTriple().getArch() == llvm::Triple::amdgcn &&
1345  "Wrong platform");
1346  (void)HIPTC;
1347 
1348  // Construct clang-offload-bundler command to bundle object files for
1349  // for different GPU archs.
1350  ArgStringList BundlerArgs;
1351  BundlerArgs.push_back(Args.MakeArgString("-type=o"));
1352 
1353  // ToDo: Remove the dummy host binary entry which is required by
1354  // clang-offload-bundler.
1355  std::string BundlerTargetArg = "-targets=host-x86_64-unknown-linux";
1356  std::string BundlerInputArg = "-inputs=/dev/null";
1357 
1358  for (const auto &II : Inputs) {
1359  const Action *A = II.getAction();
1360  // Is this a device linking action?
1361  if (A && isa<LinkJobAction>(A) && A->isDeviceOffloading(Action::OFK_HIP)) {
1362  BundlerTargetArg = BundlerTargetArg + ",hip-amdgcn-amd-amdhsa-" +
1363  StringRef(A->getOffloadingArch()).str();
1364  BundlerInputArg = BundlerInputArg + "," + II.getFilename();
1365  }
1366  }
1367  BundlerArgs.push_back(Args.MakeArgString(BundlerTargetArg));
1368  BundlerArgs.push_back(Args.MakeArgString(BundlerInputArg));
1369 
1370  std::string BundleFileName = C.getDriver().GetTemporaryPath("BUNDLE", "o");
1371  const char *BundleFile =
1372  C.addTempFile(C.getArgs().MakeArgString(BundleFileName.c_str()));
1373  auto BundlerOutputArg =
1374  Args.MakeArgString(std::string("-outputs=").append(BundleFile));
1375  BundlerArgs.push_back(BundlerOutputArg);
1376 
1377  SmallString<128> BundlerPath(C.getDriver().Dir);
1378  llvm::sys::path::append(BundlerPath, "clang-offload-bundler");
1379  const char *Bundler = Args.MakeArgString(BundlerPath);
1380  C.addCommand(llvm::make_unique<Command>(JA, T, Bundler, BundlerArgs, Inputs));
1381 
1382  // Add commands to embed target binaries. We ensure that each section and
1383  // image is 16-byte aligned. This is not mandatory, but increases the
1384  // likelihood of data to be aligned with a cache block in several main host
1385  // machines.
1386  LksStream << "/*\n";
1387  LksStream << " HIP Offload Linker Script\n";
1388  LksStream << " *** Automatically generated by Clang ***\n";
1389  LksStream << "*/\n";
1390  LksStream << "TARGET(binary)\n";
1391  LksStream << "INPUT(" << BundleFileName << ")\n";
1392  LksStream << "SECTIONS\n";
1393  LksStream << "{\n";
1394  LksStream << " .hip_fatbin :\n";
1395  LksStream << " ALIGN(0x10)\n";
1396  LksStream << " {\n";
1397  LksStream << " PROVIDE_HIDDEN(__hip_fatbin = .);\n";
1398  LksStream << " " << BundleFileName << "\n";
1399  LksStream << " }\n";
1400  LksStream << "}\n";
1401  LksStream << "INSERT BEFORE .data\n";
1402  LksStream.flush();
1403 
1404  // Dump the contents of the linker script if the user requested that. We
1405  // support this option to enable testing of behavior with -###.
1406  if (C.getArgs().hasArg(options::OPT_fhip_dump_offload_linker_script))
1407  llvm::errs() << LksBuffer;
1408 
1409  // If this is a dry run, do not create the linker script file.
1410  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1411  return;
1412 
1413  // Open script file and write the contents.
1414  std::error_code EC;
1415  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
1416 
1417  if (EC) {
1418  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1419  return;
1420  }
1421 
1422  Lksf << LksBuffer;
1423 }
1424 
1425 SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,
1426  const InputInfo &Output,
1427  const InputInfo &Input,
1428  const Driver &D) {
1429  const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);
1430  if (!A)
1431  return {};
1432 
1433  StringRef SaveStats = A->getValue();
1434  SmallString<128> StatsFile;
1435  if (SaveStats == "obj" && Output.isFilename()) {
1436  StatsFile.assign(Output.getFilename());
1437  llvm::sys::path::remove_filename(StatsFile);
1438  } else if (SaveStats != "cwd") {
1439  D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
1440  return {};
1441  }
1442 
1443  StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
1444  llvm::sys::path::append(StatsFile, BaseName);
1445  llvm::sys::path::replace_extension(StatsFile, "stats");
1446  return StatsFile;
1447 }
void handleTargetFeaturesGroup(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier Group)
SmallVector< std::string, 16 > path_list
Definition: ToolChain.h:90
bool addXRayRuntime(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
const char * getSystemZTargetCPU(const llvm::opt::ArgList &Args)
OpenMPRuntimeKind getOpenMPRuntime(const llvm::opt::ArgList &Args) const
Compute the desired OpenMP runtime from the flags provided.
Definition: Driver.cpp:514
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:770
std::string GetTemporaryPath(StringRef Prefix, StringRef Suffix) const
GetTemporaryPath - Return the pathname of a temporary file to use as part of compilation; the file wi...
Definition: Driver.cpp:4260
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:381
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:371
Defines types useful for describing an Objective-C runtime.
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:113
void AddRunTimeLibs(const ToolChain &TC, const Driver &D, llvm::opt::ArgStringList &CmdArgs, const llvm::opt::ArgList &Args)
void AddHIPLinkerScript(const ToolChain &TC, Compilation &C, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA, const Tool &T)
bool isHostOffloading(OffloadKind OKind) const
Check if this action have any offload kinds.
Definition: Action.h:201
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:110
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:526
static void AddLibgcc(const llvm::Triple &Triple, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
const char * getFilename() const
Definition: InputInfo.h:84
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:121
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfo &Input, bool IsThinLTO)
std::string getAArch64TargetCPU(const llvm::opt::ArgList &Args, llvm::opt::Arg *&A)
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:542
Action - Represent an abstract compilation step to perform.
Definition: Action.h:48
std::string getTripleString() const
Definition: ToolChain.h:206
static std::string getNios2TargetCPU(const ArgList &Args)
Definition: CommonArgs.cpp:222
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)
vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:95
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:204
The LLVM OpenMP runtime.
Definition: Driver.h:96
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:59
An unknown OpenMP runtime.
Definition: Driver.h:92
bool needsXRayRt() const
Definition: XRayArgs.h:41
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 AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
void addDirectoryList(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const char *ArgName, const char *EnvVar)
void linkXRayRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
llvm::ArrayRef< std::string > modeList() const
Definition: XRayArgs.h:42
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:68
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:245
virtual bool isPICDefault() const =0
Test whether this toolchain defaults to PIC.
const llvm::Triple & getEffectiveTriple() const
Get the toolchain&#39;s effective clang triple.
Definition: ToolChain.h:211
Defines version macros and version-related utility functions for Clang.
static const StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:581
SmallString< 128 > getStatsFileName(const llvm::opt::ArgList &Args, const InputInfo &Output, const InputInfo &Input, const Driver &D)
Handles the -save-stats option and returns the filename to save statistics to.
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input)
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:206
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:355
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
const char * getX86TargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
const_offload_toolchains_range getOffloadToolChains() const
Definition: Compilation.h:151
unsigned ParseFunctionAlignment(const ToolChain &TC, const llvm::opt::ArgList &Args)
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:197
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:187
vfs::FileSystem & getVFS() const
Definition: Driver.h:301
const Driver & getDriver() const
Definition: ToolChain.h:181
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:106
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:174
bool isSaveTempsEnabled() const
Definition: Driver.h:329
llvm::opt::Arg * getLastProfileSampleUseArg(const llvm::opt::ArgList &Args)
virtual bool HasNativeLLVMSupport() const
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: ToolChain.cpp:460
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)
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:649
std::string getARMTargetCPU(StringRef CPU, llvm::StringRef Arch, const llvm::Triple &Triple)
Dataflow Directional Tag Classes.
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:101
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp: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:237
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:46
const Driver & getDriver() const
Definition: Compilation.h:134
const llvm::Triple & getTriple() const
Definition: ToolChain.h:183
std::string getArchSpecificLibPath() const
Definition: ToolChain.cpp:387
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:420
const char * getBaseInput() const
Definition: InputInfo.h:79
static std::string getR600TargetGPU(const ArgList &Args)
Get the (LLVM) name of the R600 gpu we are targeting.
Definition: CommonArgs.cpp:206
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:61
bool isFilename() const
Definition: InputInfo.h:76
virtual bool isCrossCompiling() const
Returns true if the toolchain is targeting a non-native architecture.
Definition: ToolChain.cpp:464
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:233
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:164
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
__DEVICE__ int min(int __a, int __b)
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:154
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:588
const char * getOffloadingArch() const
Definition: Action.h:197
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:746
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88