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  auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
447  options::OPT_fcs_profile_generate_EQ,
448  options::OPT_fno_profile_generate);
449  if (CSPGOGenerateArg &&
450  CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
451  CSPGOGenerateArg = nullptr;
452 
453  auto *ProfileUseArg = getLastProfileUseArg(Args);
454 
455  if (CSPGOGenerateArg) {
456  CmdArgs.push_back(Args.MakeArgString("-plugin-opt=cs-profile-generate"));
457  if (CSPGOGenerateArg->getOption().matches(
458  options::OPT_fcs_profile_generate_EQ)) {
459  SmallString<128> Path(CSPGOGenerateArg->getValue());
460  llvm::sys::path::append(Path, "default_%m.profraw");
461  CmdArgs.push_back(
462  Args.MakeArgString(Twine("-plugin-opt=cs-profile-path=") + Path));
463  } else
464  CmdArgs.push_back(
465  Args.MakeArgString("-plugin-opt=cs-profile-path=default_%m.profraw"));
466  } else if (ProfileUseArg) {
467  SmallString<128> Path(
468  ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
469  if (Path.empty() || llvm::sys::fs::is_directory(Path))
470  llvm::sys::path::append(Path, "default.profdata");
471  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=cs-profile-path=") +
472  Path));
473  }
474 
475  // Need this flag to turn on new pass manager via Gold plugin.
476  if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
477  options::OPT_fno_experimental_new_pass_manager,
478  /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER)) {
479  CmdArgs.push_back("-plugin-opt=new-pass-manager");
480  }
481 
482  // Setup statistics file output.
483  SmallString<128> StatsFile =
484  getStatsFileName(Args, Output, Input, ToolChain.getDriver());
485  if (!StatsFile.empty())
486  CmdArgs.push_back(
487  Args.MakeArgString(Twine("-plugin-opt=stats-file=") + StatsFile));
488 }
489 
490 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
491  ArgStringList &CmdArgs) {
492  if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
493  options::OPT_fno_rtlib_add_rpath, false))
494  return;
495 
496  std::string CandidateRPath = TC.getArchSpecificLibPath();
497  if (TC.getVFS().exists(CandidateRPath)) {
498  CmdArgs.push_back("-rpath");
499  CmdArgs.push_back(Args.MakeArgString(CandidateRPath.c_str()));
500  }
501 }
502 
503 bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
504  const ArgList &Args, bool IsOffloadingHost,
505  bool GompNeedsRT) {
506  if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
507  options::OPT_fno_openmp, false))
508  return false;
509 
510  switch (TC.getDriver().getOpenMPRuntime(Args)) {
511  case Driver::OMPRT_OMP:
512  CmdArgs.push_back("-lomp");
513  break;
514  case Driver::OMPRT_GOMP:
515  CmdArgs.push_back("-lgomp");
516 
517  if (GompNeedsRT)
518  CmdArgs.push_back("-lrt");
519  break;
520  case Driver::OMPRT_IOMP5:
521  CmdArgs.push_back("-liomp5");
522  break;
524  // Already diagnosed.
525  return false;
526  }
527 
528  if (IsOffloadingHost)
529  CmdArgs.push_back("-lomptarget");
530 
531  addArchSpecificRPath(TC, Args, CmdArgs);
532 
533  return true;
534 }
535 
536 static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
537  ArgStringList &CmdArgs, StringRef Sanitizer,
538  bool IsShared, bool IsWhole) {
539  // Wrap any static runtimes that must be forced into executable in
540  // whole-archive.
541  if (IsWhole) CmdArgs.push_back("--whole-archive");
542  CmdArgs.push_back(TC.getCompilerRTArgString(
543  Args, Sanitizer, IsShared ? ToolChain::FT_Shared : ToolChain::FT_Static));
544  if (IsWhole) CmdArgs.push_back("--no-whole-archive");
545 
546  if (IsShared) {
547  addArchSpecificRPath(TC, Args, CmdArgs);
548  }
549 }
550 
551 // Tries to use a file with the list of dynamic symbols that need to be exported
552 // from the runtime library. Returns true if the file was found.
553 static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
554  ArgStringList &CmdArgs,
555  StringRef Sanitizer) {
556  // Solaris ld defaults to --export-dynamic behaviour but doesn't support
557  // the option, so don't try to pass it.
558  if (TC.getTriple().getOS() == llvm::Triple::Solaris)
559  return true;
560  // Myriad is static linking only. Furthermore, some versions of its
561  // linker have the bug where --export-dynamic overrides -static, so
562  // don't use --export-dynamic on that platform.
563  if (TC.getTriple().getVendor() == llvm::Triple::Myriad)
564  return true;
565  SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
566  if (llvm::sys::fs::exists(SanRT + ".syms")) {
567  CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
568  return true;
569  }
570  return false;
571 }
572 
573 void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
574  ArgStringList &CmdArgs) {
575  // Force linking against the system libraries sanitizers depends on
576  // (see PR15823 why this is necessary).
577  CmdArgs.push_back("--no-as-needed");
578  // There's no libpthread or librt on RTEMS & Android.
579  if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&
580  !TC.getTriple().isAndroid()) {
581  CmdArgs.push_back("-lpthread");
582  if (!TC.getTriple().isOSOpenBSD())
583  CmdArgs.push_back("-lrt");
584  }
585  CmdArgs.push_back("-lm");
586  // There's no libdl on all OSes.
587  if (!TC.getTriple().isOSFreeBSD() &&
588  !TC.getTriple().isOSNetBSD() &&
589  !TC.getTriple().isOSOpenBSD() &&
590  TC.getTriple().getOS() != llvm::Triple::RTEMS)
591  CmdArgs.push_back("-ldl");
592  // Required for backtrace on some OSes
593  if (TC.getTriple().isOSFreeBSD() ||
594  TC.getTriple().isOSNetBSD())
595  CmdArgs.push_back("-lexecinfo");
596 }
597 
598 static void
599 collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
600  SmallVectorImpl<StringRef> &SharedRuntimes,
601  SmallVectorImpl<StringRef> &StaticRuntimes,
602  SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
603  SmallVectorImpl<StringRef> &HelperStaticRuntimes,
604  SmallVectorImpl<StringRef> &RequiredSymbols) {
605  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
606  // Collect shared runtimes.
607  if (SanArgs.needsSharedRt()) {
608  if (SanArgs.needsAsanRt()) {
609  SharedRuntimes.push_back("asan");
610  if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
611  HelperStaticRuntimes.push_back("asan-preinit");
612  }
613  if (SanArgs.needsUbsanRt()) {
614  if (SanArgs.requiresMinimalRuntime())
615  SharedRuntimes.push_back("ubsan_minimal");
616  else
617  SharedRuntimes.push_back("ubsan_standalone");
618  }
619  if (SanArgs.needsScudoRt()) {
620  if (SanArgs.requiresMinimalRuntime())
621  SharedRuntimes.push_back("scudo_minimal");
622  else
623  SharedRuntimes.push_back("scudo");
624  }
625  if (SanArgs.needsHwasanRt())
626  SharedRuntimes.push_back("hwasan");
627  }
628 
629  // The stats_client library is also statically linked into DSOs.
630  if (SanArgs.needsStatsRt())
631  StaticRuntimes.push_back("stats_client");
632 
633  // Collect static runtimes.
634  if (Args.hasArg(options::OPT_shared) || SanArgs.needsSharedRt()) {
635  // Don't link static runtimes into DSOs or if -shared-libasan.
636  return;
637  }
638  if (SanArgs.needsAsanRt()) {
639  StaticRuntimes.push_back("asan");
640  if (SanArgs.linkCXXRuntimes())
641  StaticRuntimes.push_back("asan_cxx");
642  }
643 
644  if (SanArgs.needsHwasanRt()) {
645  StaticRuntimes.push_back("hwasan");
646  if (SanArgs.linkCXXRuntimes())
647  StaticRuntimes.push_back("hwasan_cxx");
648  }
649  if (SanArgs.needsDfsanRt())
650  StaticRuntimes.push_back("dfsan");
651  if (SanArgs.needsLsanRt())
652  StaticRuntimes.push_back("lsan");
653  if (SanArgs.needsMsanRt()) {
654  StaticRuntimes.push_back("msan");
655  if (SanArgs.linkCXXRuntimes())
656  StaticRuntimes.push_back("msan_cxx");
657  }
658  if (SanArgs.needsTsanRt()) {
659  StaticRuntimes.push_back("tsan");
660  if (SanArgs.linkCXXRuntimes())
661  StaticRuntimes.push_back("tsan_cxx");
662  }
663  if (SanArgs.needsUbsanRt()) {
664  if (SanArgs.requiresMinimalRuntime()) {
665  StaticRuntimes.push_back("ubsan_minimal");
666  } else {
667  StaticRuntimes.push_back("ubsan_standalone");
668  if (SanArgs.linkCXXRuntimes())
669  StaticRuntimes.push_back("ubsan_standalone_cxx");
670  }
671  }
672  if (SanArgs.needsSafeStackRt()) {
673  NonWholeStaticRuntimes.push_back("safestack");
674  RequiredSymbols.push_back("__safestack_init");
675  }
676  if (SanArgs.needsCfiRt())
677  StaticRuntimes.push_back("cfi");
678  if (SanArgs.needsCfiDiagRt()) {
679  StaticRuntimes.push_back("cfi_diag");
680  if (SanArgs.linkCXXRuntimes())
681  StaticRuntimes.push_back("ubsan_standalone_cxx");
682  }
683  if (SanArgs.needsStatsRt()) {
684  NonWholeStaticRuntimes.push_back("stats");
685  RequiredSymbols.push_back("__sanitizer_stats_register");
686  }
687  if (SanArgs.needsScudoRt()) {
688  if (SanArgs.requiresMinimalRuntime()) {
689  StaticRuntimes.push_back("scudo_minimal");
690  if (SanArgs.linkCXXRuntimes())
691  StaticRuntimes.push_back("scudo_cxx_minimal");
692  } else {
693  StaticRuntimes.push_back("scudo");
694  if (SanArgs.linkCXXRuntimes())
695  StaticRuntimes.push_back("scudo_cxx");
696  }
697  }
698 }
699 
700 // Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
701 // C runtime, etc). Returns true if sanitizer system deps need to be linked in.
702 bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
703  ArgStringList &CmdArgs) {
704  SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
705  NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
706  collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
707  NonWholeStaticRuntimes, HelperStaticRuntimes,
708  RequiredSymbols);
709 
710  // Inject libfuzzer dependencies.
711  if (TC.getSanitizerArgs().needsFuzzer()
712  && !Args.hasArg(options::OPT_shared)) {
713 
714  addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
715  if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx))
716  TC.AddCXXStdlibLibArgs(Args, CmdArgs);
717  }
718 
719  for (auto RT : SharedRuntimes)
720  addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
721  for (auto RT : HelperStaticRuntimes)
722  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
723  bool AddExportDynamic = false;
724  for (auto RT : StaticRuntimes) {
725  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
726  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
727  }
728  for (auto RT : NonWholeStaticRuntimes) {
729  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
730  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
731  }
732  for (auto S : RequiredSymbols) {
733  CmdArgs.push_back("-u");
734  CmdArgs.push_back(Args.MakeArgString(S));
735  }
736  // If there is a static runtime with no dynamic list, force all the symbols
737  // to be dynamic to be sure we export sanitizer interface functions.
738  if (AddExportDynamic)
739  CmdArgs.push_back("--export-dynamic");
740 
741  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
742  if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
743  CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
744 
745  return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
746 }
747 
748 bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {
749  if (Args.hasArg(options::OPT_shared))
750  return false;
751 
752  if (TC.getXRayArgs().needsXRayRt()) {
753  CmdArgs.push_back("-whole-archive");
754  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray"));
755  for (const auto &Mode : TC.getXRayArgs().modeList())
756  CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode));
757  CmdArgs.push_back("-no-whole-archive");
758  return true;
759  }
760 
761  return false;
762 }
763 
764 void tools::linkXRayRuntimeDeps(const ToolChain &TC, ArgStringList &CmdArgs) {
765  CmdArgs.push_back("--no-as-needed");
766  CmdArgs.push_back("-lpthread");
767  if (!TC.getTriple().isOSOpenBSD())
768  CmdArgs.push_back("-lrt");
769  CmdArgs.push_back("-lm");
770 
771  if (!TC.getTriple().isOSFreeBSD() &&
772  !TC.getTriple().isOSNetBSD() &&
773  !TC.getTriple().isOSOpenBSD())
774  CmdArgs.push_back("-ldl");
775 }
776 
777 bool tools::areOptimizationsEnabled(const ArgList &Args) {
778  // Find the last -O arg and see if it is non-zero.
779  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
780  return !A->getOption().matches(options::OPT_O0);
781  // Defaults to -O0.
782  return false;
783 }
784 
785 const char *tools::SplitDebugName(const ArgList &Args, const InputInfo &Input,
786  const InputInfo &Output) {
787  if (Arg *A = Args.getLastArg(options::OPT_gsplit_dwarf_EQ))
788  if (StringRef(A->getValue()) == "single")
789  return Args.MakeArgString(Output.getFilename());
790 
791  Arg *FinalOutput = Args.getLastArg(options::OPT_o);
792  if (FinalOutput && Args.hasArg(options::OPT_c)) {
793  SmallString<128> T(FinalOutput->getValue());
794  llvm::sys::path::replace_extension(T, "dwo");
795  return Args.MakeArgString(T);
796  } else {
797  // Use the compilation dir.
798  SmallString<128> T(
799  Args.getLastArgValue(options::OPT_fdebug_compilation_dir));
800  SmallString<128> F(llvm::sys::path::stem(Input.getBaseInput()));
801  llvm::sys::path::replace_extension(F, "dwo");
802  T += F;
803  return Args.MakeArgString(F);
804  }
805 }
806 
807 void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
808  const JobAction &JA, const ArgList &Args,
809  const InputInfo &Output, const char *OutFile) {
810  ArgStringList ExtractArgs;
811  ExtractArgs.push_back("--extract-dwo");
812 
813  ArgStringList StripArgs;
814  StripArgs.push_back("--strip-dwo");
815 
816  // Grabbing the output of the earlier compile step.
817  StripArgs.push_back(Output.getFilename());
818  ExtractArgs.push_back(Output.getFilename());
819  ExtractArgs.push_back(OutFile);
820 
821  const char *Exec =
822  Args.MakeArgString(TC.GetProgramPath(CLANG_DEFAULT_OBJCOPY));
823  InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
824 
825  // First extract the dwo sections.
826  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, ExtractArgs, II));
827 
828  // Then remove them from the original .o file.
829  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, StripArgs, II));
830 }
831 
832 // Claim options we don't want to warn if they are unused. We do this for
833 // options that build systems might add but are unused when assembling or only
834 // running the preprocessor for example.
835 void tools::claimNoWarnArgs(const ArgList &Args) {
836  // Don't warn about unused -f(no-)?lto. This can happen when we're
837  // preprocessing, precompiling or assembling.
838  Args.ClaimAllArgs(options::OPT_flto_EQ);
839  Args.ClaimAllArgs(options::OPT_flto);
840  Args.ClaimAllArgs(options::OPT_fno_lto);
841 }
842 
843 Arg *tools::getLastProfileUseArg(const ArgList &Args) {
844  auto *ProfileUseArg = Args.getLastArg(
845  options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
846  options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
847  options::OPT_fno_profile_instr_use);
848 
849  if (ProfileUseArg &&
850  ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
851  ProfileUseArg = nullptr;
852 
853  return ProfileUseArg;
854 }
855 
856 Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
857  auto *ProfileSampleUseArg = Args.getLastArg(
858  options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
859  options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
860  options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
861 
862  if (ProfileSampleUseArg &&
863  (ProfileSampleUseArg->getOption().matches(
864  options::OPT_fno_profile_sample_use) ||
865  ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
866  return nullptr;
867 
868  return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
869  options::OPT_fauto_profile_EQ);
870 }
871 
872 /// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
873 /// smooshes them together with platform defaults, to decide whether
874 /// this compile should be using PIC mode or not. Returns a tuple of
875 /// (RelocationModel, PICLevel, IsPIE).
876 std::tuple<llvm::Reloc::Model, unsigned, bool>
877 tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
878  const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
879  const llvm::Triple &Triple = ToolChain.getTriple();
880 
881  bool PIE = ToolChain.isPIEDefault();
882  bool PIC = PIE || ToolChain.isPICDefault();
883  // The Darwin/MachO default to use PIC does not apply when using -static.
884  if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))
885  PIE = PIC = false;
886  bool IsPICLevelTwo = PIC;
887 
888  bool KernelOrKext =
889  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
890 
891  // Android-specific defaults for PIC/PIE
892  if (Triple.isAndroid()) {
893  switch (Triple.getArch()) {
894  case llvm::Triple::arm:
895  case llvm::Triple::armeb:
896  case llvm::Triple::thumb:
897  case llvm::Triple::thumbeb:
898  case llvm::Triple::aarch64:
899  case llvm::Triple::mips:
900  case llvm::Triple::mipsel:
901  case llvm::Triple::mips64:
902  case llvm::Triple::mips64el:
903  PIC = true; // "-fpic"
904  break;
905 
906  case llvm::Triple::x86:
907  case llvm::Triple::x86_64:
908  PIC = true; // "-fPIC"
909  IsPICLevelTwo = true;
910  break;
911 
912  default:
913  break;
914  }
915  }
916 
917  // OpenBSD-specific defaults for PIE
918  if (Triple.isOSOpenBSD()) {
919  switch (ToolChain.getArch()) {
920  case llvm::Triple::arm:
921  case llvm::Triple::aarch64:
922  case llvm::Triple::mips64:
923  case llvm::Triple::mips64el:
924  case llvm::Triple::x86:
925  case llvm::Triple::x86_64:
926  IsPICLevelTwo = false; // "-fpie"
927  break;
928 
929  case llvm::Triple::ppc:
930  case llvm::Triple::sparc:
931  case llvm::Triple::sparcel:
932  case llvm::Triple::sparcv9:
933  IsPICLevelTwo = true; // "-fPIE"
934  break;
935 
936  default:
937  break;
938  }
939  }
940 
941  // AMDGPU-specific defaults for PIC.
942  if (Triple.getArch() == llvm::Triple::amdgcn)
943  PIC = true;
944 
945  // The last argument relating to either PIC or PIE wins, and no
946  // other argument is used. If the last argument is any flavor of the
947  // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
948  // option implicitly enables PIC at the same level.
949  Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
950  options::OPT_fpic, options::OPT_fno_pic,
951  options::OPT_fPIE, options::OPT_fno_PIE,
952  options::OPT_fpie, options::OPT_fno_pie);
953  if (Triple.isOSWindows() && LastPICArg &&
954  LastPICArg ==
955  Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
956  options::OPT_fPIE, options::OPT_fpie)) {
957  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
958  << LastPICArg->getSpelling() << Triple.str();
959  if (Triple.getArch() == llvm::Triple::x86_64)
960  return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
961  return std::make_tuple(llvm::Reloc::Static, 0U, false);
962  }
963 
964  // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
965  // is forced, then neither PIC nor PIE flags will have no effect.
966  if (!ToolChain.isPICDefaultForced()) {
967  if (LastPICArg) {
968  Option O = LastPICArg->getOption();
969  if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
970  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
971  PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
972  PIC =
973  PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
974  IsPICLevelTwo =
975  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
976  } else {
977  PIE = PIC = false;
978  if (EffectiveTriple.isPS4CPU()) {
979  Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
980  StringRef Model = ModelArg ? ModelArg->getValue() : "";
981  if (Model != "kernel") {
982  PIC = true;
983  ToolChain.getDriver().Diag(diag::warn_drv_ps4_force_pic)
984  << LastPICArg->getSpelling();
985  }
986  }
987  }
988  }
989  }
990 
991  // Introduce a Darwin and PS4-specific hack. If the default is PIC, but the
992  // PIC level would've been set to level 1, force it back to level 2 PIC
993  // instead.
994  if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS4CPU()))
995  IsPICLevelTwo |= ToolChain.isPICDefault();
996 
997  // This kernel flags are a trump-card: they will disable PIC/PIE
998  // generation, independent of the argument order.
999  if (KernelOrKext &&
1000  ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
1001  !EffectiveTriple.isWatchOS()))
1002  PIC = PIE = false;
1003 
1004  if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
1005  // This is a very special mode. It trumps the other modes, almost no one
1006  // uses it, and it isn't even valid on any OS but Darwin.
1007  if (!Triple.isOSDarwin())
1008  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1009  << A->getSpelling() << Triple.str();
1010 
1011  // FIXME: Warn when this flag trumps some other PIC or PIE flag.
1012 
1013  // Only a forced PIC mode can cause the actual compile to have PIC defines
1014  // etc., no flags are sufficient. This behavior was selected to closely
1015  // match that of llvm-gcc and Apple GCC before that.
1016  PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();
1017 
1018  return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
1019  }
1020 
1021  bool EmbeddedPISupported;
1022  switch (Triple.getArch()) {
1023  case llvm::Triple::arm:
1024  case llvm::Triple::armeb:
1025  case llvm::Triple::thumb:
1026  case llvm::Triple::thumbeb:
1027  EmbeddedPISupported = true;
1028  break;
1029  default:
1030  EmbeddedPISupported = false;
1031  break;
1032  }
1033 
1034  bool ROPI = false, RWPI = false;
1035  Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
1036  if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
1037  if (!EmbeddedPISupported)
1038  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1039  << LastROPIArg->getSpelling() << Triple.str();
1040  ROPI = true;
1041  }
1042  Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
1043  if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
1044  if (!EmbeddedPISupported)
1045  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1046  << LastRWPIArg->getSpelling() << Triple.str();
1047  RWPI = true;
1048  }
1049 
1050  // ROPI and RWPI are not compatible with PIC or PIE.
1051  if ((ROPI || RWPI) && (PIC || PIE))
1052  ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
1053 
1054  if (Triple.isMIPS()) {
1055  StringRef CPUName;
1056  StringRef ABIName;
1057  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1058  // When targeting the N64 ABI, PIC is the default, except in the case
1059  // when the -mno-abicalls option is used. In that case we exit
1060  // at next check regardless of PIC being set below.
1061  if (ABIName == "n64")
1062  PIC = true;
1063  // When targettng MIPS with -mno-abicalls, it's always static.
1064  if(Args.hasArg(options::OPT_mno_abicalls))
1065  return std::make_tuple(llvm::Reloc::Static, 0U, false);
1066  // Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,
1067  // does not use PIC level 2 for historical reasons.
1068  IsPICLevelTwo = false;
1069  }
1070 
1071  if (PIC)
1072  return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
1073 
1074  llvm::Reloc::Model RelocM = llvm::Reloc::Static;
1075  if (ROPI && RWPI)
1076  RelocM = llvm::Reloc::ROPI_RWPI;
1077  else if (ROPI)
1078  RelocM = llvm::Reloc::ROPI;
1079  else if (RWPI)
1080  RelocM = llvm::Reloc::RWPI;
1081 
1082  return std::make_tuple(RelocM, 0U, false);
1083 }
1084 
1085 // `-falign-functions` indicates that the functions should be aligned to a
1086 // 16-byte boundary.
1087 //
1088 // `-falign-functions=1` is the same as `-fno-align-functions`.
1089 //
1090 // The scalar `n` in `-falign-functions=n` must be an integral value between
1091 // [0, 65536]. If the value is not a power-of-two, it will be rounded up to
1092 // the nearest power-of-two.
1093 //
1094 // If we return `0`, the frontend will default to the backend's preferred
1095 // alignment.
1096 //
1097 // NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`
1098 // to mean `-falign-functions=16`. GCC defaults to the backend's preferred
1099 // alignment. For unaligned functions, we default to the backend's preferred
1100 // alignment.
1101 unsigned tools::ParseFunctionAlignment(const ToolChain &TC,
1102  const ArgList &Args) {
1103  const Arg *A = Args.getLastArg(options::OPT_falign_functions,
1104  options::OPT_falign_functions_EQ,
1105  options::OPT_fno_align_functions);
1106  if (!A || A->getOption().matches(options::OPT_fno_align_functions))
1107  return 0;
1108 
1109  if (A->getOption().matches(options::OPT_falign_functions))
1110  return 0;
1111 
1112  unsigned Value = 0;
1113  if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
1114  TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1115  << A->getAsString(Args) << A->getValue();
1116  return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;
1117 }
1118 
1119 void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
1120  ArgStringList &CmdArgs) {
1121  llvm::Reloc::Model RelocationModel;
1122  unsigned PICLevel;
1123  bool IsPIE;
1124  std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
1125 
1126  if (RelocationModel != llvm::Reloc::Static)
1127  CmdArgs.push_back("-KPIC");
1128 }
1129 
1130 /// Determine whether Objective-C automated reference counting is
1131 /// enabled.
1132 bool tools::isObjCAutoRefCount(const ArgList &Args) {
1133  return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
1134 }
1135 
1137 
1138 static LibGccType getLibGccType(const ArgList &Args) {
1139  bool Static = Args.hasArg(options::OPT_static_libgcc) ||
1140  Args.hasArg(options::OPT_static) ||
1141  Args.hasArg(options::OPT_static_pie);
1142 
1143  bool Shared = Args.hasArg(options::OPT_shared_libgcc);
1144  if (Shared)
1145  return LibGccType::SharedLibGcc;
1146  if (Static)
1147  return LibGccType::StaticLibGcc;
1149 }
1150 
1151 // Gcc adds libgcc arguments in various ways:
1152 //
1153 // gcc <none>: -lgcc --as-needed -lgcc_s --no-as-needed
1154 // g++ <none>: -lgcc_s -lgcc
1155 // gcc shared: -lgcc_s -lgcc
1156 // g++ shared: -lgcc_s -lgcc
1157 // gcc static: -lgcc -lgcc_eh
1158 // g++ static: -lgcc -lgcc_eh
1159 // gcc static-pie: -lgcc -lgcc_eh
1160 // g++ static-pie: -lgcc -lgcc_eh
1161 //
1162 // Also, certain targets need additional adjustments.
1163 
1164 static void AddUnwindLibrary(const ToolChain &TC, const Driver &D,
1165  ArgStringList &CmdArgs, const ArgList &Args) {
1167  // Targets that don't use unwind libraries.
1168  if (TC.getTriple().isAndroid() || TC.getTriple().isOSIAMCU() ||
1169  TC.getTriple().isOSBinFormatWasm() ||
1170  UNW == ToolChain::UNW_None)
1171  return;
1172 
1173  LibGccType LGT = getLibGccType(Args);
1174  bool AsNeeded = D.CCCIsCC() && LGT == LibGccType::UnspecifiedLibGcc &&
1175  !TC.getTriple().isAndroid() && !TC.getTriple().isOSCygMing();
1176  if (AsNeeded)
1177  CmdArgs.push_back("--as-needed");
1178 
1179  switch (UNW) {
1180  case ToolChain::UNW_None:
1181  return;
1182  case ToolChain::UNW_Libgcc: {
1183  LibGccType LGT = getLibGccType(Args);
1185  CmdArgs.push_back("-lgcc_s");
1186  else if (LGT == LibGccType::StaticLibGcc)
1187  CmdArgs.push_back("-lgcc_eh");
1188  break;
1189  }
1191  CmdArgs.push_back("-lunwind");
1192  break;
1193  }
1194 
1195  if (AsNeeded)
1196  CmdArgs.push_back("--no-as-needed");
1197 }
1198 
1199 static void AddLibgcc(const ToolChain &TC, const Driver &D,
1200  ArgStringList &CmdArgs, const ArgList &Args) {
1201  bool isAndroid = TC.getTriple().isAndroid();
1202 
1203  LibGccType LGT = getLibGccType(Args);
1204  bool LibGccFirst = (D.CCCIsCC() && LGT == LibGccType::UnspecifiedLibGcc) ||
1205  LGT == LibGccType::StaticLibGcc;
1206  if (LibGccFirst)
1207  CmdArgs.push_back("-lgcc");
1208 
1209  AddUnwindLibrary(TC, D, CmdArgs, Args);
1210 
1211  if (!LibGccFirst)
1212  CmdArgs.push_back("-lgcc");
1213 
1214  // According to Android ABI, we have to link with libdl if we are
1215  // linking with non-static libgcc.
1216  //
1217  // NOTE: This fixes a link error on Android MIPS as well. The non-static
1218  // libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl.
1219  if (isAndroid && getLibGccType(Args) != LibGccType::StaticLibGcc)
1220  CmdArgs.push_back("-ldl");
1221 }
1222 
1223 void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
1224  ArgStringList &CmdArgs, const ArgList &Args) {
1225  // Make use of compiler-rt if --rtlib option is used
1227 
1228  switch (RLT) {
1230  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
1231  AddUnwindLibrary(TC, D, CmdArgs, Args);
1232  break;
1233  case ToolChain::RLT_Libgcc:
1234  // Make sure libgcc is not used under MSVC environment by default
1235  if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1236  // Issue error diagnostic if libgcc is explicitly specified
1237  // through command line as --rtlib option argument.
1238  if (Args.hasArg(options::OPT_rtlib_EQ)) {
1239  TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
1240  << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC";
1241  }
1242  } else
1243  AddLibgcc(TC, D, CmdArgs, Args);
1244  break;
1245  }
1246 }
1247 
1248 /// Add OpenMP linker script arguments at the end of the argument list so that
1249 /// the fat binary is built by embedding each of the device images into the
1250 /// host. The linker script also defines a few symbols required by the code
1251 /// generation so that the images can be easily retrieved at runtime by the
1252 /// offloading library. This should be used only in tool chains that support
1253 /// linker scripts.
1254 void tools::AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C,
1255  const InputInfo &Output,
1256  const InputInfoList &Inputs,
1257  const ArgList &Args, ArgStringList &CmdArgs,
1258  const JobAction &JA) {
1259 
1260  // If this is not an OpenMP host toolchain, we don't need to do anything.
1262  return;
1263 
1264  // Create temporary linker script. Keep it if save-temps is enabled.
1265  const char *LKS;
1266  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
1267  if (C.getDriver().isSaveTempsEnabled()) {
1268  llvm::sys::path::replace_extension(Name, "lk");
1269  LKS = C.getArgs().MakeArgString(Name.c_str());
1270  } else {
1271  llvm::sys::path::replace_extension(Name, "");
1272  Name = C.getDriver().GetTemporaryPath(Name, "lk");
1273  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
1274  }
1275 
1276  // Add linker script option to the command.
1277  CmdArgs.push_back("-T");
1278  CmdArgs.push_back(LKS);
1279 
1280  // Create a buffer to write the contents of the linker script.
1281  std::string LksBuffer;
1282  llvm::raw_string_ostream LksStream(LksBuffer);
1283 
1284  // Get the OpenMP offload tool chains so that we can extract the triple
1285  // associated with each device input.
1286  auto OpenMPToolChains = C.getOffloadToolChains<Action::OFK_OpenMP>();
1287  assert(OpenMPToolChains.first != OpenMPToolChains.second &&
1288  "No OpenMP toolchains??");
1289 
1290  // Track the input file name and device triple in order to build the script,
1291  // inserting binaries in the designated sections.
1293 
1294  // Add commands to embed target binaries. We ensure that each section and
1295  // image is 16-byte aligned. This is not mandatory, but increases the
1296  // likelihood of data to be aligned with a cache block in several main host
1297  // machines.
1298  LksStream << "/*\n";
1299  LksStream << " OpenMP Offload Linker Script\n";
1300  LksStream << " *** Automatically generated by Clang ***\n";
1301  LksStream << "*/\n";
1302  LksStream << "TARGET(binary)\n";
1303  auto DTC = OpenMPToolChains.first;
1304  for (auto &II : Inputs) {
1305  const Action *A = II.getAction();
1306  // Is this a device linking action?
1307  if (A && isa<LinkJobAction>(A) &&
1309  assert(DTC != OpenMPToolChains.second &&
1310  "More device inputs than device toolchains??");
1311  InputBinaryInfo.push_back(std::make_pair(
1312  DTC->second->getTriple().normalize(), II.getFilename()));
1313  ++DTC;
1314  LksStream << "INPUT(" << II.getFilename() << ")\n";
1315  }
1316  }
1317 
1318  assert(DTC == OpenMPToolChains.second &&
1319  "Less device inputs than device toolchains??");
1320 
1321  LksStream << "SECTIONS\n";
1322  LksStream << "{\n";
1323 
1324  // Put each target binary into a separate section.
1325  for (const auto &BI : InputBinaryInfo) {
1326  LksStream << " .omp_offloading." << BI.first << " :\n";
1327  LksStream << " ALIGN(0x10)\n";
1328  LksStream << " {\n";
1329  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_start." << BI.first
1330  << " = .);\n";
1331  LksStream << " " << BI.second << "\n";
1332  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_end." << BI.first
1333  << " = .);\n";
1334  LksStream << " }\n";
1335  }
1336 
1337  // Add commands to define host entries begin and end. We use 1-byte subalign
1338  // so that the linker does not add any padding and the elements in this
1339  // section form an array.
1340  LksStream << " .omp_offloading.entries :\n";
1341  LksStream << " ALIGN(0x10)\n";
1342  LksStream << " SUBALIGN(0x01)\n";
1343  LksStream << " {\n";
1344  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_begin = .);\n";
1345  LksStream << " *(.omp_offloading.entries)\n";
1346  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_end = .);\n";
1347  LksStream << " }\n";
1348  LksStream << "}\n";
1349  LksStream << "INSERT BEFORE .data\n";
1350  LksStream.flush();
1351 
1352  // Dump the contents of the linker script if the user requested that. We
1353  // support this option to enable testing of behavior with -###.
1354  if (C.getArgs().hasArg(options::OPT_fopenmp_dump_offload_linker_script))
1355  llvm::errs() << LksBuffer;
1356 
1357  // If this is a dry run, do not create the linker script file.
1358  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1359  return;
1360 
1361  // Open script file and write the contents.
1362  std::error_code EC;
1363  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
1364 
1365  if (EC) {
1366  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1367  return;
1368  }
1369 
1370  Lksf << LksBuffer;
1371 }
1372 
1373 /// Add HIP linker script arguments at the end of the argument list so that
1374 /// the fat binary is built by embedding the device images into the host. The
1375 /// linker script also defines a symbol required by the code generation so that
1376 /// the image can be retrieved at runtime. This should be used only in tool
1377 /// chains that support linker scripts.
1378 void tools::AddHIPLinkerScript(const ToolChain &TC, Compilation &C,
1379  const InputInfo &Output,
1380  const InputInfoList &Inputs, const ArgList &Args,
1381  ArgStringList &CmdArgs, const JobAction &JA,
1382  const Tool &T) {
1383 
1384  // If this is not a HIP host toolchain, we don't need to do anything.
1386  return;
1387 
1388  InputInfoList DeviceInputs;
1389  for (const auto &II : Inputs) {
1390  const Action *A = II.getAction();
1391  // Is this a device linking action?
1392  if (A && isa<LinkJobAction>(A) && A->isDeviceOffloading(Action::OFK_HIP)) {
1393  DeviceInputs.push_back(II);
1394  }
1395  }
1396 
1397  if (DeviceInputs.empty())
1398  return;
1399 
1400  // Create temporary linker script. Keep it if save-temps is enabled.
1401  const char *LKS;
1402  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
1403  if (C.getDriver().isSaveTempsEnabled()) {
1404  llvm::sys::path::replace_extension(Name, "lk");
1405  LKS = C.getArgs().MakeArgString(Name.c_str());
1406  } else {
1407  llvm::sys::path::replace_extension(Name, "");
1408  Name = C.getDriver().GetTemporaryPath(Name, "lk");
1409  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
1410  }
1411 
1412  // Add linker script option to the command.
1413  CmdArgs.push_back("-T");
1414  CmdArgs.push_back(LKS);
1415 
1416  // Create a buffer to write the contents of the linker script.
1417  std::string LksBuffer;
1418  llvm::raw_string_ostream LksStream(LksBuffer);
1419 
1420  // Get the HIP offload tool chain.
1421  auto *HIPTC = static_cast<const toolchains::CudaToolChain *>(
1423  assert(HIPTC->getTriple().getArch() == llvm::Triple::amdgcn &&
1424  "Wrong platform");
1425  (void)HIPTC;
1426 
1427  // The output file name needs to persist through the compilation, therefore
1428  // it needs to be created through MakeArgString.
1429  std::string BundleFileName = C.getDriver().GetTemporaryPath("BUNDLE", "hipfb");
1430  const char *BundleFile =
1431  C.addTempFile(C.getArgs().MakeArgString(BundleFileName.c_str()));
1432  AMDGCN::constructHIPFatbinCommand(C, JA, BundleFile, DeviceInputs, Args, T);
1433 
1434  // Add commands to embed target binaries. We ensure that each section and
1435  // image is 16-byte aligned. This is not mandatory, but increases the
1436  // likelihood of data to be aligned with a cache block in several main host
1437  // machines.
1438  LksStream << "/*\n";
1439  LksStream << " HIP Offload Linker Script\n";
1440  LksStream << " *** Automatically generated by Clang ***\n";
1441  LksStream << "*/\n";
1442  LksStream << "TARGET(binary)\n";
1443  LksStream << "INPUT(" << BundleFileName << ")\n";
1444  LksStream << "SECTIONS\n";
1445  LksStream << "{\n";
1446  LksStream << " .hip_fatbin :\n";
1447  LksStream << " ALIGN(0x10)\n";
1448  LksStream << " {\n";
1449  LksStream << " PROVIDE_HIDDEN(__hip_fatbin = .);\n";
1450  LksStream << " " << BundleFileName << "\n";
1451  LksStream << " }\n";
1452  LksStream << " /DISCARD/ :\n";
1453  LksStream << " {\n";
1454  LksStream << " * ( __CLANG_OFFLOAD_BUNDLE__* )\n";
1455  LksStream << " }\n";
1456  LksStream << "}\n";
1457  LksStream << "INSERT BEFORE .data\n";
1458  LksStream.flush();
1459 
1460  // Dump the contents of the linker script if the user requested that. We
1461  // support this option to enable testing of behavior with -###.
1462  if (C.getArgs().hasArg(options::OPT_fhip_dump_offload_linker_script))
1463  llvm::errs() << LksBuffer;
1464 
1465  // If this is a dry run, do not create the linker script file.
1466  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1467  return;
1468 
1469  // Open script file and write the contents.
1470  std::error_code EC;
1471  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
1472 
1473  if (EC) {
1474  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1475  return;
1476  }
1477 
1478  Lksf << LksBuffer;
1479 }
1480 
1481 SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,
1482  const InputInfo &Output,
1483  const InputInfo &Input,
1484  const Driver &D) {
1485  const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);
1486  if (!A)
1487  return {};
1488 
1489  StringRef SaveStats = A->getValue();
1490  SmallString<128> StatsFile;
1491  if (SaveStats == "obj" && Output.isFilename()) {
1492  StatsFile.assign(Output.getFilename());
1493  llvm::sys::path::remove_filename(StatsFile);
1494  } else if (SaveStats != "cwd") {
1495  D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
1496  return {};
1497  }
1498 
1499  StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
1500  llvm::sys::path::append(StatsFile, BaseName);
1501  llvm::sys::path::replace_extension(StatsFile, "stats");
1502  return StatsFile;
1503 }
1504 
1505 void tools::addMultilibFlag(bool Enabled, const char *const Flag,
1506  Multilib::flags_list &Flags) {
1507  Flags.push_back(std::string(Enabled ? "+" : "-") + Flag);
1508 }
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:568
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:833
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:4492
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:352
Defines types useful for describing an Objective-C runtime.
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:125
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:536
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)
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:553
void addMultilibFlag(bool Enabled, const char *const Flag, Multilib::flags_list &Flags)
Flag must be a flag accepted by the driver with its leading &#39;-&#39; removed,
Action - Represent an abstract compilation step to perform.
Definition: Action.h:47
std::string getTripleString() const
Definition: ToolChain.h:218
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
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input, const InputInfo &Output)
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.
static void AddLibgcc(const ToolChain &TC, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
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:184
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:72
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.
static void AddUnwindLibrary(const ToolChain &TC, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
const llvm::Triple & getEffectiveTriple() const
Get the toolchain&#39;s effective clang triple.
Definition: ToolChain.h:223
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.
std::vector< std::string > flags_list
Definition: Multilib.h:30
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
virtual UnwindLibType GetUnwindLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:700
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)
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:209
LibGccType
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:368
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:186
const Driver & getDriver() const
Definition: ToolChain.h:193
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:492
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:681
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:101
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:119
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:195
std::string getArchSpecificLibPath() const
Definition: ToolChain.cpp:412
static LibGccType getLibGccType(const ArgList &Args)
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:406
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:452
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:496
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:599
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:805
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88