clang  9.0.0svn
CommonArgs.cpp
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1 //===--- CommonArgs.cpp - Args handling for multiple toolchains -*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "CommonArgs.h"
10 #include "Arch/AArch64.h"
11 #include "Arch/ARM.h"
12 #include "Arch/Mips.h"
13 #include "Arch/PPC.h"
14 #include "Arch/SystemZ.h"
15 #include "Arch/X86.h"
16 #include "HIP.h"
17 #include "Hexagon.h"
18 #include "InputInfo.h"
19 #include "clang/Basic/CharInfo.h"
22 #include "clang/Basic/Version.h"
23 #include "clang/Config/config.h"
24 #include "clang/Driver/Action.h"
26 #include "clang/Driver/Driver.h"
28 #include "clang/Driver/Job.h"
29 #include "clang/Driver/Options.h"
31 #include "clang/Driver/ToolChain.h"
32 #include "clang/Driver/Util.h"
33 #include "clang/Driver/XRayArgs.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/Debug.h"
45 #include "llvm/Support/ErrorHandling.h"
46 #include "llvm/Support/FileSystem.h"
47 #include "llvm/Support/Host.h"
48 #include "llvm/Support/Path.h"
49 #include "llvm/Support/Process.h"
50 #include "llvm/Support/Program.h"
51 #include "llvm/Support/ScopedPrinter.h"
52 #include "llvm/Support/TargetParser.h"
53 #include "llvm/Support/VirtualFileSystem.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 getLanaiTargetCPU(const ArgList &Args) {
223  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
224  return A->getValue();
225  }
226  return "";
227 }
228 
229 /// Get the (LLVM) name of the WebAssembly cpu we are targeting.
230 static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
231  // If we have -mcpu=, use that.
232  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
233  StringRef CPU = A->getValue();
234 
235 #ifdef __wasm__
236  // Handle "native" by examining the host. "native" isn't meaningful when
237  // cross compiling, so only support this when the host is also WebAssembly.
238  if (CPU == "native")
239  return llvm::sys::getHostCPUName();
240 #endif
241 
242  return CPU;
243  }
244 
245  return "generic";
246 }
247 
248 std::string tools::getCPUName(const ArgList &Args, const llvm::Triple &T,
249  bool FromAs) {
250  Arg *A;
251 
252  switch (T.getArch()) {
253  default:
254  return "";
255 
256  case llvm::Triple::aarch64:
257  case llvm::Triple::aarch64_be:
258  return aarch64::getAArch64TargetCPU(Args, T, A);
259 
260  case llvm::Triple::arm:
261  case llvm::Triple::armeb:
262  case llvm::Triple::thumb:
263  case llvm::Triple::thumbeb: {
264  StringRef MArch, MCPU;
265  arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
266  return arm::getARMTargetCPU(MCPU, MArch, T);
267  }
268 
269  case llvm::Triple::avr:
270  if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))
271  return A->getValue();
272  return "";
273 
274  case llvm::Triple::mips:
275  case llvm::Triple::mipsel:
276  case llvm::Triple::mips64:
277  case llvm::Triple::mips64el: {
278  StringRef CPUName;
279  StringRef ABIName;
280  mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
281  return CPUName;
282  }
283 
284  case llvm::Triple::nvptx:
285  case llvm::Triple::nvptx64:
286  if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
287  return A->getValue();
288  return "";
289 
290  case llvm::Triple::ppc:
291  case llvm::Triple::ppc64:
292  case llvm::Triple::ppc64le: {
293  std::string TargetCPUName = ppc::getPPCTargetCPU(Args);
294  // LLVM may default to generating code for the native CPU,
295  // but, like gcc, we default to a more generic option for
296  // each architecture. (except on Darwin)
297  if (TargetCPUName.empty() && !T.isOSDarwin()) {
298  if (T.getArch() == llvm::Triple::ppc64)
299  TargetCPUName = "ppc64";
300  else if (T.getArch() == llvm::Triple::ppc64le)
301  TargetCPUName = "ppc64le";
302  else
303  TargetCPUName = "ppc";
304  }
305  return TargetCPUName;
306  }
307 
308  case llvm::Triple::bpfel:
309  case llvm::Triple::bpfeb:
310  case llvm::Triple::sparc:
311  case llvm::Triple::sparcel:
312  case llvm::Triple::sparcv9:
313  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
314  return A->getValue();
315  return "";
316 
317  case llvm::Triple::x86:
318  case llvm::Triple::x86_64:
319  return x86::getX86TargetCPU(Args, T);
320 
321  case llvm::Triple::hexagon:
322  return "hexagon" +
324 
325  case llvm::Triple::lanai:
326  return getLanaiTargetCPU(Args);
327 
328  case llvm::Triple::systemz:
329  return systemz::getSystemZTargetCPU(Args);
330 
331  case llvm::Triple::r600:
332  case llvm::Triple::amdgcn:
333  return getR600TargetGPU(Args);
334 
335  case llvm::Triple::wasm32:
336  case llvm::Triple::wasm64:
337  return getWebAssemblyTargetCPU(Args);
338  }
339 }
340 
341 unsigned tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
342  unsigned Parallelism = 0;
343  Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
344  if (LtoJobsArg &&
345  StringRef(LtoJobsArg->getValue()).getAsInteger(10, Parallelism))
346  D.Diag(diag::err_drv_invalid_int_value) << LtoJobsArg->getAsString(Args)
347  << LtoJobsArg->getValue();
348  return Parallelism;
349 }
350 
351 // CloudABI uses -ffunction-sections and -fdata-sections by default.
352 bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
353  return Triple.getOS() == llvm::Triple::CloudABI;
354 }
355 
356 void tools::AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
357  ArgStringList &CmdArgs, const InputInfo &Output,
358  const InputInfo &Input, bool IsThinLTO) {
359  // Tell the linker to load the plugin. This has to come before AddLinkerInputs
360  // as gold requires -plugin to come before any -plugin-opt that -Wl might
361  // forward.
362  CmdArgs.push_back("-plugin");
363 
364 #if defined(_WIN32)
365  const char *Suffix = ".dll";
366 #elif defined(__APPLE__)
367  const char *Suffix = ".dylib";
368 #else
369  const char *Suffix = ".so";
370 #endif
371 
372  SmallString<1024> Plugin;
373  llvm::sys::path::native(Twine(ToolChain.getDriver().Dir) +
374  "/../lib" CLANG_LIBDIR_SUFFIX "/LLVMgold" +
375  Suffix,
376  Plugin);
377  CmdArgs.push_back(Args.MakeArgString(Plugin));
378 
379  // Try to pass driver level flags relevant to LTO code generation down to
380  // the plugin.
381 
382  // Handle flags for selecting CPU variants.
383  std::string CPU = getCPUName(Args, ToolChain.getTriple());
384  if (!CPU.empty())
385  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
386 
387  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
388  StringRef OOpt;
389  if (A->getOption().matches(options::OPT_O4) ||
390  A->getOption().matches(options::OPT_Ofast))
391  OOpt = "3";
392  else if (A->getOption().matches(options::OPT_O))
393  OOpt = A->getValue();
394  else if (A->getOption().matches(options::OPT_O0))
395  OOpt = "0";
396  if (!OOpt.empty())
397  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
398  }
399 
400  if (Args.hasArg(options::OPT_gsplit_dwarf)) {
401  CmdArgs.push_back(
402  Args.MakeArgString(Twine("-plugin-opt=dwo_dir=") +
403  Output.getFilename() + "_dwo"));
404  }
405 
406  if (IsThinLTO)
407  CmdArgs.push_back("-plugin-opt=thinlto");
408 
409  if (unsigned Parallelism = getLTOParallelism(Args, ToolChain.getDriver()))
410  CmdArgs.push_back(
411  Args.MakeArgString("-plugin-opt=jobs=" + Twine(Parallelism)));
412 
413  // If an explicit debugger tuning argument appeared, pass it along.
414  if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
415  options::OPT_ggdbN_Group)) {
416  if (A->getOption().matches(options::OPT_glldb))
417  CmdArgs.push_back("-plugin-opt=-debugger-tune=lldb");
418  else if (A->getOption().matches(options::OPT_gsce))
419  CmdArgs.push_back("-plugin-opt=-debugger-tune=sce");
420  else
421  CmdArgs.push_back("-plugin-opt=-debugger-tune=gdb");
422  }
423 
424  bool UseSeparateSections =
426 
427  if (Args.hasFlag(options::OPT_ffunction_sections,
428  options::OPT_fno_function_sections, UseSeparateSections)) {
429  CmdArgs.push_back("-plugin-opt=-function-sections");
430  }
431 
432  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
433  UseSeparateSections)) {
434  CmdArgs.push_back("-plugin-opt=-data-sections");
435  }
436 
437  if (Arg *A = getLastProfileSampleUseArg(Args)) {
438  StringRef FName = A->getValue();
439  if (!llvm::sys::fs::exists(FName))
440  ToolChain.getDriver().Diag(diag::err_drv_no_such_file) << FName;
441  else
442  CmdArgs.push_back(
443  Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
444  }
445 
446  // Need this flag to turn on new pass manager via Gold plugin.
447  if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
448  options::OPT_fno_experimental_new_pass_manager,
449  /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER)) {
450  CmdArgs.push_back("-plugin-opt=new-pass-manager");
451  }
452 
453  // Setup statistics file output.
454  SmallString<128> StatsFile =
455  getStatsFileName(Args, Output, Input, ToolChain.getDriver());
456  if (!StatsFile.empty())
457  CmdArgs.push_back(
458  Args.MakeArgString(Twine("-plugin-opt=stats-file=") + StatsFile));
459 }
460 
461 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
462  ArgStringList &CmdArgs) {
463  if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
464  options::OPT_fno_rtlib_add_rpath, false))
465  return;
466 
467  std::string CandidateRPath = TC.getArchSpecificLibPath();
468  if (TC.getVFS().exists(CandidateRPath)) {
469  CmdArgs.push_back("-rpath");
470  CmdArgs.push_back(Args.MakeArgString(CandidateRPath.c_str()));
471  }
472 }
473 
474 bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
475  const ArgList &Args, bool IsOffloadingHost,
476  bool GompNeedsRT) {
477  if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
478  options::OPT_fno_openmp, false))
479  return false;
480 
481  switch (TC.getDriver().getOpenMPRuntime(Args)) {
482  case Driver::OMPRT_OMP:
483  CmdArgs.push_back("-lomp");
484  break;
485  case Driver::OMPRT_GOMP:
486  CmdArgs.push_back("-lgomp");
487 
488  if (GompNeedsRT)
489  CmdArgs.push_back("-lrt");
490  break;
491  case Driver::OMPRT_IOMP5:
492  CmdArgs.push_back("-liomp5");
493  break;
495  // Already diagnosed.
496  return false;
497  }
498 
499  if (IsOffloadingHost)
500  CmdArgs.push_back("-lomptarget");
501 
502  addArchSpecificRPath(TC, Args, CmdArgs);
503 
504  return true;
505 }
506 
507 static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
508  ArgStringList &CmdArgs, StringRef Sanitizer,
509  bool IsShared, bool IsWhole) {
510  // Wrap any static runtimes that must be forced into executable in
511  // whole-archive.
512  if (IsWhole) CmdArgs.push_back("--whole-archive");
513  CmdArgs.push_back(TC.getCompilerRTArgString(Args, Sanitizer, IsShared));
514  if (IsWhole) CmdArgs.push_back("--no-whole-archive");
515 
516  if (IsShared) {
517  addArchSpecificRPath(TC, Args, CmdArgs);
518  }
519 }
520 
521 // Tries to use a file with the list of dynamic symbols that need to be exported
522 // from the runtime library. Returns true if the file was found.
523 static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
524  ArgStringList &CmdArgs,
525  StringRef Sanitizer) {
526  // Solaris ld defaults to --export-dynamic behaviour but doesn't support
527  // the option, so don't try to pass it.
528  if (TC.getTriple().getOS() == llvm::Triple::Solaris)
529  return true;
530  // Myriad is static linking only. Furthermore, some versions of its
531  // linker have the bug where --export-dynamic overrides -static, so
532  // don't use --export-dynamic on that platform.
533  if (TC.getTriple().getVendor() == llvm::Triple::Myriad)
534  return true;
535  SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
536  if (llvm::sys::fs::exists(SanRT + ".syms")) {
537  CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
538  return true;
539  }
540  return false;
541 }
542 
543 static void addSanitizerLibPath(const ToolChain &TC, const ArgList &Args,
544  ArgStringList &CmdArgs, StringRef Name) {
545  for (const auto &LibPath : TC.getLibraryPaths()) {
546  if (!LibPath.empty()) {
547  SmallString<128> P(LibPath);
548  llvm::sys::path::append(P, Name);
549  if (TC.getVFS().exists(P))
550  CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + P));
551  }
552  }
553 }
554 
555 void tools::addSanitizerPathLibArgs(const ToolChain &TC, const ArgList &Args,
556  ArgStringList &CmdArgs) {
557  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
558  if (SanArgs.needsAsanRt()) {
559  addSanitizerLibPath(TC, Args, CmdArgs, "asan");
560  }
561  if (SanArgs.needsHwasanRt()) {
562  addSanitizerLibPath(TC, Args, CmdArgs, "hwasan");
563  }
564  if (SanArgs.needsLsanRt()) {
565  addSanitizerLibPath(TC, Args, CmdArgs, "lsan");
566  }
567  if (SanArgs.needsMsanRt()) {
568  addSanitizerLibPath(TC, Args, CmdArgs, "msan");
569  }
570  if (SanArgs.needsTsanRt()) {
571  addSanitizerLibPath(TC, Args, CmdArgs, "tsan");
572  }
573 }
574 
575 
576 
577 void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
578  ArgStringList &CmdArgs) {
579  // Force linking against the system libraries sanitizers depends on
580  // (see PR15823 why this is necessary).
581  CmdArgs.push_back("--no-as-needed");
582  // There's no libpthread or librt on RTEMS & Android.
583  if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&
584  !TC.getTriple().isAndroid()) {
585  CmdArgs.push_back("-lpthread");
586  if (!TC.getTriple().isOSOpenBSD())
587  CmdArgs.push_back("-lrt");
588  }
589  CmdArgs.push_back("-lm");
590  // There's no libdl on all OSes.
591  if (!TC.getTriple().isOSFreeBSD() &&
592  !TC.getTriple().isOSNetBSD() &&
593  !TC.getTriple().isOSOpenBSD() &&
594  TC.getTriple().getOS() != llvm::Triple::RTEMS)
595  CmdArgs.push_back("-ldl");
596  // Required for backtrace on some OSes
597  if (TC.getTriple().isOSFreeBSD() ||
598  TC.getTriple().isOSNetBSD())
599  CmdArgs.push_back("-lexecinfo");
600 }
601 
602 static void
603 collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
604  SmallVectorImpl<StringRef> &SharedRuntimes,
605  SmallVectorImpl<StringRef> &StaticRuntimes,
606  SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
607  SmallVectorImpl<StringRef> &HelperStaticRuntimes,
608  SmallVectorImpl<StringRef> &RequiredSymbols) {
609  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
610  // Collect shared runtimes.
611  if (SanArgs.needsSharedRt()) {
612  if (SanArgs.needsAsanRt()) {
613  SharedRuntimes.push_back("asan");
614  if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
615  HelperStaticRuntimes.push_back("asan-preinit");
616  }
617  if (SanArgs.needsUbsanRt()) {
618  if (SanArgs.requiresMinimalRuntime())
619  SharedRuntimes.push_back("ubsan_minimal");
620  else
621  SharedRuntimes.push_back("ubsan_standalone");
622  }
623  if (SanArgs.needsScudoRt()) {
624  if (SanArgs.requiresMinimalRuntime())
625  SharedRuntimes.push_back("scudo_minimal");
626  else
627  SharedRuntimes.push_back("scudo");
628  }
629  if (SanArgs.needsHwasanRt())
630  SharedRuntimes.push_back("hwasan");
631  }
632 
633  // The stats_client library is also statically linked into DSOs.
634  if (SanArgs.needsStatsRt())
635  StaticRuntimes.push_back("stats_client");
636 
637  // Collect static runtimes.
638  if (Args.hasArg(options::OPT_shared) || SanArgs.needsSharedRt()) {
639  // Don't link static runtimes into DSOs or if -shared-libasan.
640  return;
641  }
642  if (SanArgs.needsAsanRt()) {
643  StaticRuntimes.push_back("asan");
644  if (SanArgs.linkCXXRuntimes())
645  StaticRuntimes.push_back("asan_cxx");
646  }
647 
648  if (SanArgs.needsHwasanRt()) {
649  StaticRuntimes.push_back("hwasan");
650  if (SanArgs.linkCXXRuntimes())
651  StaticRuntimes.push_back("hwasan_cxx");
652  }
653  if (SanArgs.needsDfsanRt())
654  StaticRuntimes.push_back("dfsan");
655  if (SanArgs.needsLsanRt())
656  StaticRuntimes.push_back("lsan");
657  if (SanArgs.needsMsanRt()) {
658  StaticRuntimes.push_back("msan");
659  if (SanArgs.linkCXXRuntimes())
660  StaticRuntimes.push_back("msan_cxx");
661  }
662  if (SanArgs.needsTsanRt()) {
663  StaticRuntimes.push_back("tsan");
664  if (SanArgs.linkCXXRuntimes())
665  StaticRuntimes.push_back("tsan_cxx");
666  }
667  if (SanArgs.needsUbsanRt()) {
668  if (SanArgs.requiresMinimalRuntime()) {
669  StaticRuntimes.push_back("ubsan_minimal");
670  } else {
671  StaticRuntimes.push_back("ubsan_standalone");
672  if (SanArgs.linkCXXRuntimes())
673  StaticRuntimes.push_back("ubsan_standalone_cxx");
674  }
675  }
676  if (SanArgs.needsSafeStackRt()) {
677  NonWholeStaticRuntimes.push_back("safestack");
678  RequiredSymbols.push_back("__safestack_init");
679  }
680  if (SanArgs.needsCfiRt())
681  StaticRuntimes.push_back("cfi");
682  if (SanArgs.needsCfiDiagRt()) {
683  StaticRuntimes.push_back("cfi_diag");
684  if (SanArgs.linkCXXRuntimes())
685  StaticRuntimes.push_back("ubsan_standalone_cxx");
686  }
687  if (SanArgs.needsStatsRt()) {
688  NonWholeStaticRuntimes.push_back("stats");
689  RequiredSymbols.push_back("__sanitizer_stats_register");
690  }
691  if (SanArgs.needsEsanRt())
692  StaticRuntimes.push_back("esan");
693  if (SanArgs.needsScudoRt()) {
694  if (SanArgs.requiresMinimalRuntime()) {
695  StaticRuntimes.push_back("scudo_minimal");
696  if (SanArgs.linkCXXRuntimes())
697  StaticRuntimes.push_back("scudo_cxx_minimal");
698  } else {
699  StaticRuntimes.push_back("scudo");
700  if (SanArgs.linkCXXRuntimes())
701  StaticRuntimes.push_back("scudo_cxx");
702  }
703  }
704 }
705 
706 // Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
707 // C runtime, etc). Returns true if sanitizer system deps need to be linked in.
708 bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
709  ArgStringList &CmdArgs) {
710  SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
711  NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
712  collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
713  NonWholeStaticRuntimes, HelperStaticRuntimes,
714  RequiredSymbols);
715 
716  // Inject libfuzzer dependencies.
717  if (TC.getSanitizerArgs().needsFuzzer()
718  && !Args.hasArg(options::OPT_shared)) {
719 
720  addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
721  if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx))
722  TC.AddCXXStdlibLibArgs(Args, CmdArgs);
723  }
724 
725  for (auto RT : SharedRuntimes)
726  addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
727  for (auto RT : HelperStaticRuntimes)
728  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
729  bool AddExportDynamic = false;
730  for (auto RT : StaticRuntimes) {
731  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
732  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
733  }
734  for (auto RT : NonWholeStaticRuntimes) {
735  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
736  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
737  }
738  for (auto S : RequiredSymbols) {
739  CmdArgs.push_back("-u");
740  CmdArgs.push_back(Args.MakeArgString(S));
741  }
742  // If there is a static runtime with no dynamic list, force all the symbols
743  // to be dynamic to be sure we export sanitizer interface functions.
744  if (AddExportDynamic)
745  CmdArgs.push_back("--export-dynamic");
746 
747  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
748  if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
749  CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
750 
751  return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
752 }
753 
754 bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {
755  if (Args.hasArg(options::OPT_shared))
756  return false;
757 
758  if (TC.getXRayArgs().needsXRayRt()) {
759  CmdArgs.push_back("-whole-archive");
760  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray"));
761  for (const auto &Mode : TC.getXRayArgs().modeList())
762  CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode));
763  CmdArgs.push_back("-no-whole-archive");
764  return true;
765  }
766 
767  return false;
768 }
769 
770 void tools::linkXRayRuntimeDeps(const ToolChain &TC, ArgStringList &CmdArgs) {
771  CmdArgs.push_back("--no-as-needed");
772  CmdArgs.push_back("-lpthread");
773  if (!TC.getTriple().isOSOpenBSD())
774  CmdArgs.push_back("-lrt");
775  CmdArgs.push_back("-lm");
776 
777  if (!TC.getTriple().isOSFreeBSD() &&
778  !TC.getTriple().isOSNetBSD() &&
779  !TC.getTriple().isOSOpenBSD())
780  CmdArgs.push_back("-ldl");
781 }
782 
783 bool tools::areOptimizationsEnabled(const ArgList &Args) {
784  // Find the last -O arg and see if it is non-zero.
785  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
786  return !A->getOption().matches(options::OPT_O0);
787  // Defaults to -O0.
788  return false;
789 }
790 
791 const char *tools::SplitDebugName(const ArgList &Args,
792  const InputInfo &Output) {
793  SmallString<128> F(Output.isFilename()
794  ? Output.getFilename()
795  : llvm::sys::path::stem(Output.getBaseInput()));
796 
797  if (Arg *A = Args.getLastArg(options::OPT_gsplit_dwarf_EQ))
798  if (StringRef(A->getValue()) == "single")
799  return Args.MakeArgString(F);
800 
801  llvm::sys::path::replace_extension(F, "dwo");
802  return Args.MakeArgString(F);
803 }
804 
805 void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
806  const JobAction &JA, const ArgList &Args,
807  const InputInfo &Output, const char *OutFile) {
808  ArgStringList ExtractArgs;
809  ExtractArgs.push_back("--extract-dwo");
810 
811  ArgStringList StripArgs;
812  StripArgs.push_back("--strip-dwo");
813 
814  // Grabbing the output of the earlier compile step.
815  StripArgs.push_back(Output.getFilename());
816  ExtractArgs.push_back(Output.getFilename());
817  ExtractArgs.push_back(OutFile);
818 
819  const char *Exec =
820  Args.MakeArgString(TC.GetProgramPath(CLANG_DEFAULT_OBJCOPY));
821  InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
822 
823  // First extract the dwo sections.
824  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, ExtractArgs, II));
825 
826  // Then remove them from the original .o file.
827  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, StripArgs, II));
828 }
829 
830 // Claim options we don't want to warn if they are unused. We do this for
831 // options that build systems might add but are unused when assembling or only
832 // running the preprocessor for example.
833 void tools::claimNoWarnArgs(const ArgList &Args) {
834  // Don't warn about unused -f(no-)?lto. This can happen when we're
835  // preprocessing, precompiling or assembling.
836  Args.ClaimAllArgs(options::OPT_flto_EQ);
837  Args.ClaimAllArgs(options::OPT_flto);
838  Args.ClaimAllArgs(options::OPT_fno_lto);
839 }
840 
841 Arg *tools::getLastProfileUseArg(const ArgList &Args) {
842  auto *ProfileUseArg = Args.getLastArg(
843  options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
844  options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
845  options::OPT_fno_profile_instr_use);
846 
847  if (ProfileUseArg &&
848  ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
849  ProfileUseArg = nullptr;
850 
851  return ProfileUseArg;
852 }
853 
854 Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
855  auto *ProfileSampleUseArg = Args.getLastArg(
856  options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
857  options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
858  options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
859 
860  if (ProfileSampleUseArg &&
861  (ProfileSampleUseArg->getOption().matches(
862  options::OPT_fno_profile_sample_use) ||
863  ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
864  return nullptr;
865 
866  return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
867  options::OPT_fauto_profile_EQ);
868 }
869 
870 /// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
871 /// smooshes them together with platform defaults, to decide whether
872 /// this compile should be using PIC mode or not. Returns a tuple of
873 /// (RelocationModel, PICLevel, IsPIE).
874 std::tuple<llvm::Reloc::Model, unsigned, bool>
875 tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
876  const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
877  const llvm::Triple &Triple = ToolChain.getTriple();
878 
879  bool PIE = ToolChain.isPIEDefault();
880  bool PIC = PIE || ToolChain.isPICDefault();
881  // The Darwin/MachO default to use PIC does not apply when using -static.
882  if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))
883  PIE = PIC = false;
884  bool IsPICLevelTwo = PIC;
885 
886  bool KernelOrKext =
887  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
888 
889  // Android-specific defaults for PIC/PIE
890  if (Triple.isAndroid()) {
891  switch (Triple.getArch()) {
892  case llvm::Triple::arm:
893  case llvm::Triple::armeb:
894  case llvm::Triple::thumb:
895  case llvm::Triple::thumbeb:
896  case llvm::Triple::aarch64:
897  case llvm::Triple::mips:
898  case llvm::Triple::mipsel:
899  case llvm::Triple::mips64:
900  case llvm::Triple::mips64el:
901  PIC = true; // "-fpic"
902  break;
903 
904  case llvm::Triple::x86:
905  case llvm::Triple::x86_64:
906  PIC = true; // "-fPIC"
907  IsPICLevelTwo = true;
908  break;
909 
910  default:
911  break;
912  }
913  }
914 
915  // OpenBSD-specific defaults for PIE
916  if (Triple.isOSOpenBSD()) {
917  switch (ToolChain.getArch()) {
918  case llvm::Triple::arm:
919  case llvm::Triple::aarch64:
920  case llvm::Triple::mips64:
921  case llvm::Triple::mips64el:
922  case llvm::Triple::x86:
923  case llvm::Triple::x86_64:
924  IsPICLevelTwo = false; // "-fpie"
925  break;
926 
927  case llvm::Triple::ppc:
928  case llvm::Triple::sparc:
929  case llvm::Triple::sparcel:
930  case llvm::Triple::sparcv9:
931  IsPICLevelTwo = true; // "-fPIE"
932  break;
933 
934  default:
935  break;
936  }
937  }
938 
939  // AMDGPU-specific defaults for PIC.
940  if (Triple.getArch() == llvm::Triple::amdgcn)
941  PIC = true;
942 
943  // The last argument relating to either PIC or PIE wins, and no
944  // other argument is used. If the last argument is any flavor of the
945  // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
946  // option implicitly enables PIC at the same level.
947  Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
948  options::OPT_fpic, options::OPT_fno_pic,
949  options::OPT_fPIE, options::OPT_fno_PIE,
950  options::OPT_fpie, options::OPT_fno_pie);
951  if (Triple.isOSWindows() && LastPICArg &&
952  LastPICArg ==
953  Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
954  options::OPT_fPIE, options::OPT_fpie)) {
955  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
956  << LastPICArg->getSpelling() << Triple.str();
957  if (Triple.getArch() == llvm::Triple::x86_64)
958  return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
959  return std::make_tuple(llvm::Reloc::Static, 0U, false);
960  }
961 
962  // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
963  // is forced, then neither PIC nor PIE flags will have no effect.
964  if (!ToolChain.isPICDefaultForced()) {
965  if (LastPICArg) {
966  Option O = LastPICArg->getOption();
967  if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
968  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
969  PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
970  PIC =
971  PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
972  IsPICLevelTwo =
973  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
974  } else {
975  PIE = PIC = false;
976  if (EffectiveTriple.isPS4CPU()) {
977  Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
978  StringRef Model = ModelArg ? ModelArg->getValue() : "";
979  if (Model != "kernel") {
980  PIC = true;
981  ToolChain.getDriver().Diag(diag::warn_drv_ps4_force_pic)
982  << LastPICArg->getSpelling();
983  }
984  }
985  }
986  }
987  }
988 
989  // Introduce a Darwin and PS4-specific hack. If the default is PIC, but the
990  // PIC level would've been set to level 1, force it back to level 2 PIC
991  // instead.
992  if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS4CPU()))
993  IsPICLevelTwo |= ToolChain.isPICDefault();
994 
995  // This kernel flags are a trump-card: they will disable PIC/PIE
996  // generation, independent of the argument order.
997  if (KernelOrKext &&
998  ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
999  !EffectiveTriple.isWatchOS()))
1000  PIC = PIE = false;
1001 
1002  if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
1003  // This is a very special mode. It trumps the other modes, almost no one
1004  // uses it, and it isn't even valid on any OS but Darwin.
1005  if (!Triple.isOSDarwin())
1006  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1007  << A->getSpelling() << Triple.str();
1008 
1009  // FIXME: Warn when this flag trumps some other PIC or PIE flag.
1010 
1011  // Only a forced PIC mode can cause the actual compile to have PIC defines
1012  // etc., no flags are sufficient. This behavior was selected to closely
1013  // match that of llvm-gcc and Apple GCC before that.
1014  PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();
1015 
1016  return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
1017  }
1018 
1019  bool EmbeddedPISupported;
1020  switch (Triple.getArch()) {
1021  case llvm::Triple::arm:
1022  case llvm::Triple::armeb:
1023  case llvm::Triple::thumb:
1024  case llvm::Triple::thumbeb:
1025  EmbeddedPISupported = true;
1026  break;
1027  default:
1028  EmbeddedPISupported = false;
1029  break;
1030  }
1031 
1032  bool ROPI = false, RWPI = false;
1033  Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
1034  if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
1035  if (!EmbeddedPISupported)
1036  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1037  << LastROPIArg->getSpelling() << Triple.str();
1038  ROPI = true;
1039  }
1040  Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
1041  if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
1042  if (!EmbeddedPISupported)
1043  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1044  << LastRWPIArg->getSpelling() << Triple.str();
1045  RWPI = true;
1046  }
1047 
1048  // ROPI and RWPI are not compatible with PIC or PIE.
1049  if ((ROPI || RWPI) && (PIC || PIE))
1050  ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
1051 
1052  if (Triple.isMIPS()) {
1053  StringRef CPUName;
1054  StringRef ABIName;
1055  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1056  // When targeting the N64 ABI, PIC is the default, except in the case
1057  // when the -mno-abicalls option is used. In that case we exit
1058  // at next check regardless of PIC being set below.
1059  if (ABIName == "n64")
1060  PIC = true;
1061  // When targettng MIPS with -mno-abicalls, it's always static.
1062  if(Args.hasArg(options::OPT_mno_abicalls))
1063  return std::make_tuple(llvm::Reloc::Static, 0U, false);
1064  // Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,
1065  // does not use PIC level 2 for historical reasons.
1066  IsPICLevelTwo = false;
1067  }
1068 
1069  if (PIC)
1070  return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
1071 
1072  llvm::Reloc::Model RelocM = llvm::Reloc::Static;
1073  if (ROPI && RWPI)
1074  RelocM = llvm::Reloc::ROPI_RWPI;
1075  else if (ROPI)
1076  RelocM = llvm::Reloc::ROPI;
1077  else if (RWPI)
1078  RelocM = llvm::Reloc::RWPI;
1079 
1080  return std::make_tuple(RelocM, 0U, false);
1081 }
1082 
1083 // `-falign-functions` indicates that the functions should be aligned to a
1084 // 16-byte boundary.
1085 //
1086 // `-falign-functions=1` is the same as `-fno-align-functions`.
1087 //
1088 // The scalar `n` in `-falign-functions=n` must be an integral value between
1089 // [0, 65536]. If the value is not a power-of-two, it will be rounded up to
1090 // the nearest power-of-two.
1091 //
1092 // If we return `0`, the frontend will default to the backend's preferred
1093 // alignment.
1094 //
1095 // NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`
1096 // to mean `-falign-functions=16`. GCC defaults to the backend's preferred
1097 // alignment. For unaligned functions, we default to the backend's preferred
1098 // alignment.
1099 unsigned tools::ParseFunctionAlignment(const ToolChain &TC,
1100  const ArgList &Args) {
1101  const Arg *A = Args.getLastArg(options::OPT_falign_functions,
1102  options::OPT_falign_functions_EQ,
1103  options::OPT_fno_align_functions);
1104  if (!A || A->getOption().matches(options::OPT_fno_align_functions))
1105  return 0;
1106 
1107  if (A->getOption().matches(options::OPT_falign_functions))
1108  return 0;
1109 
1110  unsigned Value = 0;
1111  if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
1112  TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1113  << A->getAsString(Args) << A->getValue();
1114  return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;
1115 }
1116 
1117 void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
1118  ArgStringList &CmdArgs) {
1119  llvm::Reloc::Model RelocationModel;
1120  unsigned PICLevel;
1121  bool IsPIE;
1122  std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
1123 
1124  if (RelocationModel != llvm::Reloc::Static)
1125  CmdArgs.push_back("-KPIC");
1126 }
1127 
1128 /// Determine whether Objective-C automated reference counting is
1129 /// enabled.
1130 bool tools::isObjCAutoRefCount(const ArgList &Args) {
1131  return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
1132 }
1133 
1134 static void AddLibgcc(const llvm::Triple &Triple, const Driver &D,
1135  ArgStringList &CmdArgs, const ArgList &Args) {
1136  bool isAndroid = Triple.isAndroid();
1137  bool isCygMing = Triple.isOSCygMing();
1138  bool IsIAMCU = Triple.isOSIAMCU();
1139  bool StaticLibgcc = Args.hasArg(options::OPT_static_libgcc) ||
1140  Args.hasArg(options::OPT_static);
1141 
1142  bool SharedLibgcc = Args.hasArg(options::OPT_shared_libgcc);
1143  bool UnspecifiedLibgcc = !StaticLibgcc && !SharedLibgcc;
1144 
1145  // Gcc adds libgcc arguments in various ways:
1146  //
1147  // gcc <none>: -lgcc --as-needed -lgcc_s --no-as-needed
1148  // g++ <none>: -lgcc_s -lgcc
1149  // gcc shared: -lgcc_s -lgcc
1150  // g++ shared: -lgcc_s -lgcc
1151  // gcc static: -lgcc -lgcc_eh
1152  // g++ static: -lgcc -lgcc_eh
1153  //
1154  // Also, certain targets need additional adjustments.
1155 
1156  bool LibGccFirst = (D.CCCIsCC() && UnspecifiedLibgcc) || StaticLibgcc;
1157  if (LibGccFirst)
1158  CmdArgs.push_back("-lgcc");
1159 
1160  bool AsNeeded = D.CCCIsCC() && UnspecifiedLibgcc && !isAndroid && !isCygMing;
1161  if (AsNeeded)
1162  CmdArgs.push_back("--as-needed");
1163 
1164  if ((UnspecifiedLibgcc || SharedLibgcc) && !isAndroid)
1165  CmdArgs.push_back("-lgcc_s");
1166 
1167  else if (StaticLibgcc && !isAndroid && !IsIAMCU)
1168  CmdArgs.push_back("-lgcc_eh");
1169 
1170  if (AsNeeded)
1171  CmdArgs.push_back("--no-as-needed");
1172 
1173  if (!LibGccFirst)
1174  CmdArgs.push_back("-lgcc");
1175 
1176  // According to Android ABI, we have to link with libdl if we are
1177  // linking with non-static libgcc.
1178  //
1179  // NOTE: This fixes a link error on Android MIPS as well. The non-static
1180  // libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl.
1181  if (isAndroid && !StaticLibgcc)
1182  CmdArgs.push_back("-ldl");
1183 }
1184 
1185 void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
1186  ArgStringList &CmdArgs, const ArgList &Args) {
1187  // Make use of compiler-rt if --rtlib option is used
1189 
1190  switch (RLT) {
1192  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
1193  break;
1194  case ToolChain::RLT_Libgcc:
1195  // Make sure libgcc is not used under MSVC environment by default
1196  if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1197  // Issue error diagnostic if libgcc is explicitly specified
1198  // through command line as --rtlib option argument.
1199  if (Args.hasArg(options::OPT_rtlib_EQ)) {
1200  TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
1201  << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC";
1202  }
1203  } else
1204  AddLibgcc(TC.getTriple(), D, CmdArgs, Args);
1205  break;
1206  }
1207 }
1208 
1209 /// Add OpenMP linker script arguments at the end of the argument list so that
1210 /// the fat binary is built by embedding each of the device images into the
1211 /// host. The linker script also defines a few symbols required by the code
1212 /// generation so that the images can be easily retrieved at runtime by the
1213 /// offloading library. This should be used only in tool chains that support
1214 /// linker scripts.
1215 void tools::AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C,
1216  const InputInfo &Output,
1217  const InputInfoList &Inputs,
1218  const ArgList &Args, ArgStringList &CmdArgs,
1219  const JobAction &JA) {
1220 
1221  // If this is not an OpenMP host toolchain, we don't need to do anything.
1223  return;
1224 
1225  // Create temporary linker script. Keep it if save-temps is enabled.
1226  const char *LKS;
1227  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
1228  if (C.getDriver().isSaveTempsEnabled()) {
1229  llvm::sys::path::replace_extension(Name, "lk");
1230  LKS = C.getArgs().MakeArgString(Name.c_str());
1231  } else {
1232  llvm::sys::path::replace_extension(Name, "");
1233  Name = C.getDriver().GetTemporaryPath(Name, "lk");
1234  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
1235  }
1236 
1237  // Add linker script option to the command.
1238  CmdArgs.push_back("-T");
1239  CmdArgs.push_back(LKS);
1240 
1241  // Create a buffer to write the contents of the linker script.
1242  std::string LksBuffer;
1243  llvm::raw_string_ostream LksStream(LksBuffer);
1244 
1245  // Get the OpenMP offload tool chains so that we can extract the triple
1246  // associated with each device input.
1247  auto OpenMPToolChains = C.getOffloadToolChains<Action::OFK_OpenMP>();
1248  assert(OpenMPToolChains.first != OpenMPToolChains.second &&
1249  "No OpenMP toolchains??");
1250 
1251  // Track the input file name and device triple in order to build the script,
1252  // inserting binaries in the designated sections.
1254 
1255  // Add commands to embed target binaries. We ensure that each section and
1256  // image is 16-byte aligned. This is not mandatory, but increases the
1257  // likelihood of data to be aligned with a cache block in several main host
1258  // machines.
1259  LksStream << "/*\n";
1260  LksStream << " OpenMP Offload Linker Script\n";
1261  LksStream << " *** Automatically generated by Clang ***\n";
1262  LksStream << "*/\n";
1263  LksStream << "TARGET(binary)\n";
1264  auto DTC = OpenMPToolChains.first;
1265  for (auto &II : Inputs) {
1266  const Action *A = II.getAction();
1267  // Is this a device linking action?
1268  if (A && isa<LinkJobAction>(A) &&
1270  assert(DTC != OpenMPToolChains.second &&
1271  "More device inputs than device toolchains??");
1272  InputBinaryInfo.push_back(std::make_pair(
1273  DTC->second->getTriple().normalize(), II.getFilename()));
1274  ++DTC;
1275  LksStream << "INPUT(" << II.getFilename() << ")\n";
1276  }
1277  }
1278 
1279  assert(DTC == OpenMPToolChains.second &&
1280  "Less device inputs than device toolchains??");
1281 
1282  LksStream << "SECTIONS\n";
1283  LksStream << "{\n";
1284 
1285  // Put each target binary into a separate section.
1286  for (const auto &BI : InputBinaryInfo) {
1287  LksStream << " .omp_offloading." << BI.first << " :\n";
1288  LksStream << " ALIGN(0x10)\n";
1289  LksStream << " {\n";
1290  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_start." << BI.first
1291  << " = .);\n";
1292  LksStream << " " << BI.second << "\n";
1293  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_end." << BI.first
1294  << " = .);\n";
1295  LksStream << " }\n";
1296  }
1297 
1298  // Add commands to define host entries begin and end. We use 1-byte subalign
1299  // so that the linker does not add any padding and the elements in this
1300  // section form an array.
1301  LksStream << " .omp_offloading.entries :\n";
1302  LksStream << " ALIGN(0x10)\n";
1303  LksStream << " SUBALIGN(0x01)\n";
1304  LksStream << " {\n";
1305  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_begin = .);\n";
1306  LksStream << " *(.omp_offloading.entries)\n";
1307  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_end = .);\n";
1308  LksStream << " }\n";
1309  LksStream << "}\n";
1310  LksStream << "INSERT BEFORE .data\n";
1311  LksStream.flush();
1312 
1313  // Dump the contents of the linker script if the user requested that. We
1314  // support this option to enable testing of behavior with -###.
1315  if (C.getArgs().hasArg(options::OPT_fopenmp_dump_offload_linker_script))
1316  llvm::errs() << LksBuffer;
1317 
1318  // If this is a dry run, do not create the linker script file.
1319  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1320  return;
1321 
1322  // Open script file and write the contents.
1323  std::error_code EC;
1324  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
1325 
1326  if (EC) {
1327  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1328  return;
1329  }
1330 
1331  Lksf << LksBuffer;
1332 }
1333 
1334 /// Add HIP linker script arguments at the end of the argument list so that
1335 /// the fat binary is built by embedding the device images into the host. The
1336 /// linker script also defines a symbol required by the code generation so that
1337 /// the image can be retrieved at runtime. This should be used only in tool
1338 /// chains that support linker scripts.
1339 void tools::AddHIPLinkerScript(const ToolChain &TC, Compilation &C,
1340  const InputInfo &Output,
1341  const InputInfoList &Inputs, const ArgList &Args,
1342  ArgStringList &CmdArgs, const JobAction &JA,
1343  const Tool &T) {
1344 
1345  // If this is not a HIP host toolchain, we don't need to do anything.
1347  return;
1348 
1349  InputInfoList DeviceInputs;
1350  for (const auto &II : Inputs) {
1351  const Action *A = II.getAction();
1352  // Is this a device linking action?
1353  if (A && isa<LinkJobAction>(A) && A->isDeviceOffloading(Action::OFK_HIP)) {
1354  DeviceInputs.push_back(II);
1355  }
1356  }
1357 
1358  if (DeviceInputs.empty())
1359  return;
1360 
1361  // Create temporary linker script. Keep it if save-temps is enabled.
1362  const char *LKS;
1363  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
1364  if (C.getDriver().isSaveTempsEnabled()) {
1365  llvm::sys::path::replace_extension(Name, "lk");
1366  LKS = C.getArgs().MakeArgString(Name.c_str());
1367  } else {
1368  llvm::sys::path::replace_extension(Name, "");
1369  Name = C.getDriver().GetTemporaryPath(Name, "lk");
1370  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
1371  }
1372 
1373  // Add linker script option to the command.
1374  CmdArgs.push_back("-T");
1375  CmdArgs.push_back(LKS);
1376 
1377  // Create a buffer to write the contents of the linker script.
1378  std::string LksBuffer;
1379  llvm::raw_string_ostream LksStream(LksBuffer);
1380 
1381  // Get the HIP offload tool chain.
1382  auto *HIPTC = static_cast<const toolchains::CudaToolChain *>(
1384  assert(HIPTC->getTriple().getArch() == llvm::Triple::amdgcn &&
1385  "Wrong platform");
1386  (void)HIPTC;
1387 
1388  // The output file name needs to persist through the compilation, therefore
1389  // it needs to be created through MakeArgString.
1390  std::string BundleFileName = C.getDriver().GetTemporaryPath("BUNDLE", "hipfb");
1391  const char *BundleFile =
1392  C.addTempFile(C.getArgs().MakeArgString(BundleFileName.c_str()));
1393  AMDGCN::constructHIPFatbinCommand(C, JA, BundleFile, DeviceInputs, Args, T);
1394 
1395  // Add commands to embed target binaries. We ensure that each section and
1396  // image is 16-byte aligned. This is not mandatory, but increases the
1397  // likelihood of data to be aligned with a cache block in several main host
1398  // machines.
1399  LksStream << "/*\n";
1400  LksStream << " HIP Offload Linker Script\n";
1401  LksStream << " *** Automatically generated by Clang ***\n";
1402  LksStream << "*/\n";
1403  LksStream << "TARGET(binary)\n";
1404  LksStream << "INPUT(" << BundleFileName << ")\n";
1405  LksStream << "SECTIONS\n";
1406  LksStream << "{\n";
1407  LksStream << " .hip_fatbin :\n";
1408  LksStream << " ALIGN(0x10)\n";
1409  LksStream << " {\n";
1410  LksStream << " PROVIDE_HIDDEN(__hip_fatbin = .);\n";
1411  LksStream << " " << BundleFileName << "\n";
1412  LksStream << " }\n";
1413  LksStream << " /DISCARD/ :\n";
1414  LksStream << " {\n";
1415  LksStream << " * ( __CLANG_OFFLOAD_BUNDLE__* )\n";
1416  LksStream << " }\n";
1417  LksStream << "}\n";
1418  LksStream << "INSERT BEFORE .data\n";
1419  LksStream.flush();
1420 
1421  // Dump the contents of the linker script if the user requested that. We
1422  // support this option to enable testing of behavior with -###.
1423  if (C.getArgs().hasArg(options::OPT_fhip_dump_offload_linker_script))
1424  llvm::errs() << LksBuffer;
1425 
1426  // If this is a dry run, do not create the linker script file.
1427  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1428  return;
1429 
1430  // Open script file and write the contents.
1431  std::error_code EC;
1432  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
1433 
1434  if (EC) {
1435  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1436  return;
1437  }
1438 
1439  Lksf << LksBuffer;
1440 }
1441 
1442 SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,
1443  const InputInfo &Output,
1444  const InputInfo &Input,
1445  const Driver &D) {
1446  const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);
1447  if (!A)
1448  return {};
1449 
1450  StringRef SaveStats = A->getValue();
1451  SmallString<128> StatsFile;
1452  if (SaveStats == "obj" && Output.isFilename()) {
1453  StatsFile.assign(Output.getFilename());
1454  llvm::sys::path::remove_filename(StatsFile);
1455  } else if (SaveStats != "cwd") {
1456  D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
1457  return {};
1458  }
1459 
1460  StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
1461  llvm::sys::path::append(StatsFile, BaseName);
1462  llvm::sys::path::replace_extension(StatsFile, "stats");
1463  return StatsFile;
1464 }
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:566
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:788
std::string getAArch64TargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, llvm::opt::Arg *&A)
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:4486
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:391
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Output)
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:352
StringRef P
Defines types useful for describing an Objective-C runtime.
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:121
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:108
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:507
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:83
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
void addSanitizerPathLibArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:119
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfo &Input, bool IsThinLTO)
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:523
Action - Represent an abstract compilation step to perform.
Definition: Action.h:47
std::string getTripleString() const
Definition: ToolChain.h:210
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
void addArchSpecificRPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:204
The LLVM OpenMP runtime.
Definition: Driver.h:94
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:57
An unknown OpenMP runtime.
Definition: Driver.h:90
bool needsXRayRt() const
Definition: XRayArgs.h:40
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)
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:302
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:41
void constructHIPFatbinCommand(Compilation &C, const JobAction &JA, StringRef OutputFileName, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const Tool &T)
Definition: HIP.cpp:212
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:70
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:230
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:215
Defines version macros and version-related utility functions for Clang.
static const StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:575
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.
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:364
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:150
unsigned ParseFunctionAlignment(const ToolChain &TC, const llvm::opt::ArgList &Args)
path_list & getLibraryPaths()
Definition: ToolChain.h:220
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:201
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:186
const Driver & getDriver() const
Definition: ToolChain.h:185
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:104
bool isSaveTempsEnabled() const
Definition: Driver.h:330
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:474
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:663
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:101
static void addSanitizerLibPath(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Name)
Definition: CommonArgs.cpp:543
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:33
The GNU OpenMP runtime.
Definition: Driver.h:99
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:115
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:222
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
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:45
const Driver & getDriver() const
Definition: Compilation.h:133
const llvm::Triple & getTriple() const
Definition: ToolChain.h:187
std::string getArchSpecificLibPath() const
Definition: ToolChain.cpp:397
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:434
const char * getBaseInput() const
Definition: InputInfo.h:78
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:75
virtual bool isCrossCompiling() const
Returns true if the toolchain is targeting a non-native architecture.
Definition: ToolChain.cpp:478
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:232
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:163
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
__DEVICE__ int min(int __a, int __b)
bool CCCIsCC() const
Whether the driver should follow gcc like behavior.
Definition: Driver.h:178
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:153
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:603
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:760
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88