clang  8.0.0svn
CommonArgs.cpp
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1 //===--- CommonArgs.cpp - Args handling for multiple toolchains -*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "CommonArgs.h"
11 #include "Arch/AArch64.h"
12 #include "Arch/ARM.h"
13 #include "Arch/Mips.h"
14 #include "Arch/PPC.h"
15 #include "Arch/SystemZ.h"
16 #include "Arch/X86.h"
17 #include "HIP.h"
18 #include "Hexagon.h"
19 #include "InputInfo.h"
20 #include "clang/Basic/CharInfo.h"
23 #include "clang/Basic/Version.h"
24 #include "clang/Config/config.h"
25 #include "clang/Driver/Action.h"
27 #include "clang/Driver/Driver.h"
29 #include "clang/Driver/Job.h"
30 #include "clang/Driver/Options.h"
32 #include "clang/Driver/ToolChain.h"
33 #include "clang/Driver/Util.h"
34 #include "clang/Driver/XRayArgs.h"
35 #include "llvm/ADT/STLExtras.h"
36 #include "llvm/ADT/SmallString.h"
37 #include "llvm/ADT/StringExtras.h"
38 #include "llvm/ADT/StringSwitch.h"
39 #include "llvm/ADT/Twine.h"
40 #include "llvm/Option/Arg.h"
41 #include "llvm/Option/ArgList.h"
42 #include "llvm/Option/Option.h"
43 #include "llvm/Support/CodeGen.h"
44 #include "llvm/Support/Compression.h"
45 #include "llvm/Support/Debug.h"
46 #include "llvm/Support/ErrorHandling.h"
47 #include "llvm/Support/FileSystem.h"
48 #include "llvm/Support/Host.h"
49 #include "llvm/Support/Path.h"
50 #include "llvm/Support/Process.h"
51 #include "llvm/Support/Program.h"
52 #include "llvm/Support/ScopedPrinter.h"
53 #include "llvm/Support/TargetParser.h"
54 #include "llvm/Support/VirtualFileSystem.h"
55 #include "llvm/Support/YAMLParser.h"
56 
57 using namespace clang::driver;
58 using namespace clang::driver::tools;
59 using namespace clang;
60 using namespace llvm::opt;
61 
62 void tools::addPathIfExists(const Driver &D, const Twine &Path,
63  ToolChain::path_list &Paths) {
64  if (D.getVFS().exists(Path))
65  Paths.push_back(Path.str());
66 }
67 
68 void tools::handleTargetFeaturesGroup(const ArgList &Args,
69  std::vector<StringRef> &Features,
70  OptSpecifier Group) {
71  for (const Arg *A : Args.filtered(Group)) {
72  StringRef Name = A->getOption().getName();
73  A->claim();
74 
75  // Skip over "-m".
76  assert(Name.startswith("m") && "Invalid feature name.");
77  Name = Name.substr(1);
78 
79  bool IsNegative = Name.startswith("no-");
80  if (IsNegative)
81  Name = Name.substr(3);
82  Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
83  }
84 }
85 
86 void tools::addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,
87  const char *ArgName, const char *EnvVar) {
88  const char *DirList = ::getenv(EnvVar);
89  bool CombinedArg = false;
90 
91  if (!DirList)
92  return; // Nothing to do.
93 
94  StringRef Name(ArgName);
95  if (Name.equals("-I") || Name.equals("-L"))
96  CombinedArg = true;
97 
98  StringRef Dirs(DirList);
99  if (Dirs.empty()) // Empty string should not add '.'.
100  return;
101 
102  StringRef::size_type Delim;
103  while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {
104  if (Delim == 0) { // Leading colon.
105  if (CombinedArg) {
106  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
107  } else {
108  CmdArgs.push_back(ArgName);
109  CmdArgs.push_back(".");
110  }
111  } else {
112  if (CombinedArg) {
113  CmdArgs.push_back(
114  Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
115  } else {
116  CmdArgs.push_back(ArgName);
117  CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
118  }
119  }
120  Dirs = Dirs.substr(Delim + 1);
121  }
122 
123  if (Dirs.empty()) { // Trailing colon.
124  if (CombinedArg) {
125  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
126  } else {
127  CmdArgs.push_back(ArgName);
128  CmdArgs.push_back(".");
129  }
130  } else { // Add the last path.
131  if (CombinedArg) {
132  CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
133  } else {
134  CmdArgs.push_back(ArgName);
135  CmdArgs.push_back(Args.MakeArgString(Dirs));
136  }
137  }
138 }
139 
140 void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
141  const ArgList &Args, ArgStringList &CmdArgs,
142  const JobAction &JA) {
143  const Driver &D = TC.getDriver();
144 
145  // Add extra linker input arguments which are not treated as inputs
146  // (constructed via -Xarch_).
147  Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
148 
149  for (const auto &II : Inputs) {
150  // If the current tool chain refers to an OpenMP or HIP offloading host, we
151  // should ignore inputs that refer to OpenMP or HIP offloading devices -
152  // they will be embedded according to a proper linker script.
153  if (auto *IA = II.getAction())
155  IA->isDeviceOffloading(Action::OFK_OpenMP)) ||
157  IA->isDeviceOffloading(Action::OFK_HIP)))
158  continue;
159 
160  if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
161  // Don't try to pass LLVM inputs unless we have native support.
162  D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
163 
164  // Add filenames immediately.
165  if (II.isFilename()) {
166  CmdArgs.push_back(II.getFilename());
167  continue;
168  }
169 
170  // Otherwise, this is a linker input argument.
171  const Arg &A = II.getInputArg();
172 
173  // Handle reserved library options.
174  if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
175  TC.AddCXXStdlibLibArgs(Args, CmdArgs);
176  else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
177  TC.AddCCKextLibArgs(Args, CmdArgs);
178  else if (A.getOption().matches(options::OPT_z)) {
179  // Pass -z prefix for gcc linker compatibility.
180  A.claim();
181  A.render(Args, CmdArgs);
182  } else {
183  A.renderAsInput(Args, CmdArgs);
184  }
185  }
186 
187  // LIBRARY_PATH - included following the user specified library paths.
188  // and only supported on native toolchains.
189  if (!TC.isCrossCompiling()) {
190  addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
191  }
192 }
193 
194 void tools::AddTargetFeature(const ArgList &Args,
195  std::vector<StringRef> &Features,
196  OptSpecifier OnOpt, OptSpecifier OffOpt,
197  StringRef FeatureName) {
198  if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {
199  if (A->getOption().matches(OnOpt))
200  Features.push_back(Args.MakeArgString("+" + FeatureName));
201  else
202  Features.push_back(Args.MakeArgString("-" + FeatureName));
203  }
204 }
205 
206 /// Get the (LLVM) name of the R600 gpu we are targeting.
207 static std::string getR600TargetGPU(const ArgList &Args) {
208  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
209  const char *GPUName = A->getValue();
210  return llvm::StringSwitch<const char *>(GPUName)
211  .Cases("rv630", "rv635", "r600")
212  .Cases("rv610", "rv620", "rs780", "rs880")
213  .Case("rv740", "rv770")
214  .Case("palm", "cedar")
215  .Cases("sumo", "sumo2", "sumo")
216  .Case("hemlock", "cypress")
217  .Case("aruba", "cayman")
218  .Default(GPUName);
219  }
220  return "";
221 }
222 
223 static std::string getNios2TargetCPU(const ArgList &Args) {
224  Arg *A = Args.getLastArg(options::OPT_mcpu_EQ);
225  if (!A)
226  A = Args.getLastArg(options::OPT_march_EQ);
227 
228  if (!A)
229  return "";
230 
231  const char *name = A->getValue();
232  return llvm::StringSwitch<const char *>(name)
233  .Case("r1", "nios2r1")
234  .Case("r2", "nios2r2")
235  .Default(name);
236 }
237 
238 static std::string getLanaiTargetCPU(const ArgList &Args) {
239  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
240  return A->getValue();
241  }
242  return "";
243 }
244 
245 /// Get the (LLVM) name of the WebAssembly cpu we are targeting.
246 static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
247  // If we have -mcpu=, use that.
248  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
249  StringRef CPU = A->getValue();
250 
251 #ifdef __wasm__
252  // Handle "native" by examining the host. "native" isn't meaningful when
253  // cross compiling, so only support this when the host is also WebAssembly.
254  if (CPU == "native")
255  return llvm::sys::getHostCPUName();
256 #endif
257 
258  return CPU;
259  }
260 
261  return "generic";
262 }
263 
264 std::string tools::getCPUName(const ArgList &Args, const llvm::Triple &T,
265  bool FromAs) {
266  Arg *A;
267 
268  switch (T.getArch()) {
269  default:
270  return "";
271 
272  case llvm::Triple::aarch64:
273  case llvm::Triple::aarch64_be:
274  return aarch64::getAArch64TargetCPU(Args, A);
275 
276  case llvm::Triple::arm:
277  case llvm::Triple::armeb:
278  case llvm::Triple::thumb:
279  case llvm::Triple::thumbeb: {
280  StringRef MArch, MCPU;
281  arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
282  return arm::getARMTargetCPU(MCPU, MArch, T);
283  }
284 
285  case llvm::Triple::avr:
286  if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))
287  return A->getValue();
288  return "";
289 
290  case llvm::Triple::nios2: {
291  return getNios2TargetCPU(Args);
292  }
293 
294  case llvm::Triple::mips:
295  case llvm::Triple::mipsel:
296  case llvm::Triple::mips64:
297  case llvm::Triple::mips64el: {
298  StringRef CPUName;
299  StringRef ABIName;
300  mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
301  return CPUName;
302  }
303 
304  case llvm::Triple::nvptx:
305  case llvm::Triple::nvptx64:
306  if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
307  return A->getValue();
308  return "";
309 
310  case llvm::Triple::ppc:
311  case llvm::Triple::ppc64:
312  case llvm::Triple::ppc64le: {
313  std::string TargetCPUName = ppc::getPPCTargetCPU(Args);
314  // LLVM may default to generating code for the native CPU,
315  // but, like gcc, we default to a more generic option for
316  // each architecture. (except on Darwin)
317  if (TargetCPUName.empty() && !T.isOSDarwin()) {
318  if (T.getArch() == llvm::Triple::ppc64)
319  TargetCPUName = "ppc64";
320  else if (T.getArch() == llvm::Triple::ppc64le)
321  TargetCPUName = "ppc64le";
322  else
323  TargetCPUName = "ppc";
324  }
325  return TargetCPUName;
326  }
327 
328  case llvm::Triple::bpfel:
329  case llvm::Triple::bpfeb:
330  case llvm::Triple::sparc:
331  case llvm::Triple::sparcel:
332  case llvm::Triple::sparcv9:
333  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
334  return A->getValue();
335  return "";
336 
337  case llvm::Triple::x86:
338  case llvm::Triple::x86_64:
339  return x86::getX86TargetCPU(Args, T);
340 
341  case llvm::Triple::hexagon:
342  return "hexagon" +
344 
345  case llvm::Triple::lanai:
346  return getLanaiTargetCPU(Args);
347 
348  case llvm::Triple::systemz:
349  return systemz::getSystemZTargetCPU(Args);
350 
351  case llvm::Triple::r600:
352  case llvm::Triple::amdgcn:
353  return getR600TargetGPU(Args);
354 
355  case llvm::Triple::wasm32:
356  case llvm::Triple::wasm64:
357  return getWebAssemblyTargetCPU(Args);
358  }
359 }
360 
361 unsigned tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
362  unsigned Parallelism = 0;
363  Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
364  if (LtoJobsArg &&
365  StringRef(LtoJobsArg->getValue()).getAsInteger(10, Parallelism))
366  D.Diag(diag::err_drv_invalid_int_value) << LtoJobsArg->getAsString(Args)
367  << LtoJobsArg->getValue();
368  return Parallelism;
369 }
370 
371 // CloudABI uses -ffunction-sections and -fdata-sections by default.
372 bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
373  return Triple.getOS() == llvm::Triple::CloudABI;
374 }
375 
376 void tools::AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
377  ArgStringList &CmdArgs, const InputInfo &Output,
378  const InputInfo &Input, bool IsThinLTO) {
379  // Tell the linker to load the plugin. This has to come before AddLinkerInputs
380  // as gold requires -plugin to come before any -plugin-opt that -Wl might
381  // forward.
382  CmdArgs.push_back("-plugin");
383 
384 #if defined(_WIN32)
385  const char *Suffix = ".dll";
386 #elif defined(__APPLE__)
387  const char *Suffix = ".dylib";
388 #else
389  const char *Suffix = ".so";
390 #endif
391 
392  SmallString<1024> Plugin;
393  llvm::sys::path::native(Twine(ToolChain.getDriver().Dir) +
394  "/../lib" CLANG_LIBDIR_SUFFIX "/LLVMgold" +
395  Suffix,
396  Plugin);
397  CmdArgs.push_back(Args.MakeArgString(Plugin));
398 
399  // Try to pass driver level flags relevant to LTO code generation down to
400  // the plugin.
401 
402  // Handle flags for selecting CPU variants.
403  std::string CPU = getCPUName(Args, ToolChain.getTriple());
404  if (!CPU.empty())
405  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
406 
407  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
408  StringRef OOpt;
409  if (A->getOption().matches(options::OPT_O4) ||
410  A->getOption().matches(options::OPT_Ofast))
411  OOpt = "3";
412  else if (A->getOption().matches(options::OPT_O))
413  OOpt = A->getValue();
414  else if (A->getOption().matches(options::OPT_O0))
415  OOpt = "0";
416  if (!OOpt.empty())
417  CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
418  }
419 
420  if (Args.hasArg(options::OPT_gsplit_dwarf)) {
421  CmdArgs.push_back(
422  Args.MakeArgString(Twine("-plugin-opt=dwo_dir=") +
423  Output.getFilename() + "_dwo"));
424  }
425 
426  if (IsThinLTO)
427  CmdArgs.push_back("-plugin-opt=thinlto");
428 
429  if (unsigned Parallelism = getLTOParallelism(Args, ToolChain.getDriver()))
430  CmdArgs.push_back(
431  Args.MakeArgString("-plugin-opt=jobs=" + Twine(Parallelism)));
432 
433  // If an explicit debugger tuning argument appeared, pass it along.
434  if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
435  options::OPT_ggdbN_Group)) {
436  if (A->getOption().matches(options::OPT_glldb))
437  CmdArgs.push_back("-plugin-opt=-debugger-tune=lldb");
438  else if (A->getOption().matches(options::OPT_gsce))
439  CmdArgs.push_back("-plugin-opt=-debugger-tune=sce");
440  else
441  CmdArgs.push_back("-plugin-opt=-debugger-tune=gdb");
442  }
443 
444  bool UseSeparateSections =
446 
447  if (Args.hasFlag(options::OPT_ffunction_sections,
448  options::OPT_fno_function_sections, UseSeparateSections)) {
449  CmdArgs.push_back("-plugin-opt=-function-sections");
450  }
451 
452  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
453  UseSeparateSections)) {
454  CmdArgs.push_back("-plugin-opt=-data-sections");
455  }
456 
457  if (Arg *A = getLastProfileSampleUseArg(Args)) {
458  StringRef FName = A->getValue();
459  if (!llvm::sys::fs::exists(FName))
460  ToolChain.getDriver().Diag(diag::err_drv_no_such_file) << FName;
461  else
462  CmdArgs.push_back(
463  Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
464  }
465 
466  // Need this flag to turn on new pass manager via Gold plugin.
467  if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
468  options::OPT_fno_experimental_new_pass_manager,
469  /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER)) {
470  CmdArgs.push_back("-plugin-opt=new-pass-manager");
471  }
472 
473  // Setup statistics file output.
474  SmallString<128> StatsFile =
475  getStatsFileName(Args, Output, Input, ToolChain.getDriver());
476  if (!StatsFile.empty())
477  CmdArgs.push_back(
478  Args.MakeArgString(Twine("-plugin-opt=stats-file=") + StatsFile));
479 }
480 
481 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
482  ArgStringList &CmdArgs) {
483  if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
484  options::OPT_fno_rtlib_add_rpath, false))
485  return;
486 
487  std::string CandidateRPath = TC.getArchSpecificLibPath();
488  if (TC.getVFS().exists(CandidateRPath)) {
489  CmdArgs.push_back("-rpath");
490  CmdArgs.push_back(Args.MakeArgString(CandidateRPath.c_str()));
491  }
492 }
493 
494 bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
495  const ArgList &Args, bool IsOffloadingHost,
496  bool GompNeedsRT) {
497  if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
498  options::OPT_fno_openmp, false))
499  return false;
500 
501  switch (TC.getDriver().getOpenMPRuntime(Args)) {
502  case Driver::OMPRT_OMP:
503  CmdArgs.push_back("-lomp");
504  break;
505  case Driver::OMPRT_GOMP:
506  CmdArgs.push_back("-lgomp");
507 
508  if (GompNeedsRT)
509  CmdArgs.push_back("-lrt");
510  break;
511  case Driver::OMPRT_IOMP5:
512  CmdArgs.push_back("-liomp5");
513  break;
515  // Already diagnosed.
516  return false;
517  }
518 
519  if (IsOffloadingHost)
520  CmdArgs.push_back("-lomptarget");
521 
522  addArchSpecificRPath(TC, Args, CmdArgs);
523 
524  return true;
525 }
526 
527 static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
528  ArgStringList &CmdArgs, StringRef Sanitizer,
529  bool IsShared, bool IsWhole) {
530  // Wrap any static runtimes that must be forced into executable in
531  // whole-archive.
532  if (IsWhole) CmdArgs.push_back("--whole-archive");
533  CmdArgs.push_back(TC.getCompilerRTArgString(Args, Sanitizer, IsShared));
534  if (IsWhole) CmdArgs.push_back("--no-whole-archive");
535 
536  if (IsShared) {
537  addArchSpecificRPath(TC, Args, CmdArgs);
538  }
539 }
540 
541 // Tries to use a file with the list of dynamic symbols that need to be exported
542 // from the runtime library. Returns true if the file was found.
543 static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
544  ArgStringList &CmdArgs,
545  StringRef Sanitizer) {
546  // Solaris ld defaults to --export-dynamic behaviour but doesn't support
547  // the option, so don't try to pass it.
548  if (TC.getTriple().getOS() == llvm::Triple::Solaris)
549  return true;
550  // Myriad is static linking only. Furthermore, some versions of its
551  // linker have the bug where --export-dynamic overrides -static, so
552  // don't use --export-dynamic on that platform.
553  if (TC.getTriple().getVendor() == llvm::Triple::Myriad)
554  return true;
555  SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
556  if (llvm::sys::fs::exists(SanRT + ".syms")) {
557  CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
558  return true;
559  }
560  return false;
561 }
562 
563 static void addSanitizerLibPath(const ToolChain &TC, const ArgList &Args,
564  ArgStringList &CmdArgs, StringRef Name) {
565  for (const auto &LibPath : TC.getLibraryPaths()) {
566  if (!LibPath.empty()) {
567  SmallString<128> P(LibPath);
568  llvm::sys::path::append(P, Name);
569  if (TC.getVFS().exists(P))
570  CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + P));
571  }
572  }
573 }
574 
575 void tools::addSanitizerPathLibArgs(const ToolChain &TC, const ArgList &Args,
576  ArgStringList &CmdArgs) {
577  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
578  if (SanArgs.needsAsanRt()) {
579  addSanitizerLibPath(TC, Args, CmdArgs, "asan");
580  }
581  if (SanArgs.needsHwasanRt()) {
582  addSanitizerLibPath(TC, Args, CmdArgs, "hwasan");
583  }
584  if (SanArgs.needsLsanRt()) {
585  addSanitizerLibPath(TC, Args, CmdArgs, "lsan");
586  }
587  if (SanArgs.needsMsanRt()) {
588  addSanitizerLibPath(TC, Args, CmdArgs, "msan");
589  }
590  if (SanArgs.needsTsanRt()) {
591  addSanitizerLibPath(TC, Args, CmdArgs, "tsan");
592  }
593 }
594 
595 
596 
597 void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
598  ArgStringList &CmdArgs) {
599  // Force linking against the system libraries sanitizers depends on
600  // (see PR15823 why this is necessary).
601  CmdArgs.push_back("--no-as-needed");
602  // There's no libpthread or librt on RTEMS & Android.
603  if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&
604  !TC.getTriple().isAndroid()) {
605  CmdArgs.push_back("-lpthread");
606  if (TC.getTriple().getOS() != llvm::Triple::OpenBSD)
607  CmdArgs.push_back("-lrt");
608  }
609  CmdArgs.push_back("-lm");
610  // There's no libdl on all OSes.
611  if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
612  TC.getTriple().getOS() != llvm::Triple::NetBSD &&
613  TC.getTriple().getOS() != llvm::Triple::OpenBSD &&
614  TC.getTriple().getOS() != llvm::Triple::RTEMS)
615  CmdArgs.push_back("-ldl");
616  // Required for backtrace on some OSes
617  if (TC.getTriple().getOS() == llvm::Triple::NetBSD ||
618  TC.getTriple().getOS() == llvm::Triple::FreeBSD)
619  CmdArgs.push_back("-lexecinfo");
620 }
621 
622 static void
623 collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
624  SmallVectorImpl<StringRef> &SharedRuntimes,
625  SmallVectorImpl<StringRef> &StaticRuntimes,
626  SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
627  SmallVectorImpl<StringRef> &HelperStaticRuntimes,
628  SmallVectorImpl<StringRef> &RequiredSymbols) {
629  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
630  // Collect shared runtimes.
631  if (SanArgs.needsSharedRt()) {
632  if (SanArgs.needsAsanRt()) {
633  SharedRuntimes.push_back("asan");
634  if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
635  HelperStaticRuntimes.push_back("asan-preinit");
636  }
637  if (SanArgs.needsUbsanRt()) {
638  if (SanArgs.requiresMinimalRuntime())
639  SharedRuntimes.push_back("ubsan_minimal");
640  else
641  SharedRuntimes.push_back("ubsan_standalone");
642  }
643  if (SanArgs.needsScudoRt()) {
644  if (SanArgs.requiresMinimalRuntime())
645  SharedRuntimes.push_back("scudo_minimal");
646  else
647  SharedRuntimes.push_back("scudo");
648  }
649  if (SanArgs.needsHwasanRt())
650  SharedRuntimes.push_back("hwasan");
651  }
652 
653  // The stats_client library is also statically linked into DSOs.
654  if (SanArgs.needsStatsRt())
655  StaticRuntimes.push_back("stats_client");
656 
657  // Collect static runtimes.
658  if (Args.hasArg(options::OPT_shared) || SanArgs.needsSharedRt()) {
659  // Don't link static runtimes into DSOs or if -shared-libasan.
660  return;
661  }
662  if (SanArgs.needsAsanRt()) {
663  StaticRuntimes.push_back("asan");
664  if (SanArgs.linkCXXRuntimes())
665  StaticRuntimes.push_back("asan_cxx");
666  }
667 
668  if (SanArgs.needsHwasanRt()) {
669  StaticRuntimes.push_back("hwasan");
670  if (SanArgs.linkCXXRuntimes())
671  StaticRuntimes.push_back("hwasan_cxx");
672  }
673  if (SanArgs.needsDfsanRt())
674  StaticRuntimes.push_back("dfsan");
675  if (SanArgs.needsLsanRt())
676  StaticRuntimes.push_back("lsan");
677  if (SanArgs.needsMsanRt()) {
678  StaticRuntimes.push_back("msan");
679  if (SanArgs.linkCXXRuntimes())
680  StaticRuntimes.push_back("msan_cxx");
681  }
682  if (SanArgs.needsTsanRt()) {
683  StaticRuntimes.push_back("tsan");
684  if (SanArgs.linkCXXRuntimes())
685  StaticRuntimes.push_back("tsan_cxx");
686  }
687  if (SanArgs.needsUbsanRt()) {
688  if (SanArgs.requiresMinimalRuntime()) {
689  StaticRuntimes.push_back("ubsan_minimal");
690  } else {
691  StaticRuntimes.push_back("ubsan_standalone");
692  if (SanArgs.linkCXXRuntimes())
693  StaticRuntimes.push_back("ubsan_standalone_cxx");
694  }
695  }
696  if (SanArgs.needsSafeStackRt()) {
697  NonWholeStaticRuntimes.push_back("safestack");
698  RequiredSymbols.push_back("__safestack_init");
699  }
700  if (SanArgs.needsCfiRt())
701  StaticRuntimes.push_back("cfi");
702  if (SanArgs.needsCfiDiagRt()) {
703  StaticRuntimes.push_back("cfi_diag");
704  if (SanArgs.linkCXXRuntimes())
705  StaticRuntimes.push_back("ubsan_standalone_cxx");
706  }
707  if (SanArgs.needsStatsRt()) {
708  NonWholeStaticRuntimes.push_back("stats");
709  RequiredSymbols.push_back("__sanitizer_stats_register");
710  }
711  if (SanArgs.needsEsanRt())
712  StaticRuntimes.push_back("esan");
713  if (SanArgs.needsScudoRt()) {
714  if (SanArgs.requiresMinimalRuntime()) {
715  StaticRuntimes.push_back("scudo_minimal");
716  if (SanArgs.linkCXXRuntimes())
717  StaticRuntimes.push_back("scudo_cxx_minimal");
718  } else {
719  StaticRuntimes.push_back("scudo");
720  if (SanArgs.linkCXXRuntimes())
721  StaticRuntimes.push_back("scudo_cxx");
722  }
723  }
724 }
725 
726 // Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
727 // C runtime, etc). Returns true if sanitizer system deps need to be linked in.
728 bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
729  ArgStringList &CmdArgs) {
730  SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
731  NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
732  collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
733  NonWholeStaticRuntimes, HelperStaticRuntimes,
734  RequiredSymbols);
735 
736  // Inject libfuzzer dependencies.
737  if (TC.getSanitizerArgs().needsFuzzer()
738  && !Args.hasArg(options::OPT_shared)) {
739 
740  addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
741  if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx))
742  TC.AddCXXStdlibLibArgs(Args, CmdArgs);
743  }
744 
745  for (auto RT : SharedRuntimes)
746  addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
747  for (auto RT : HelperStaticRuntimes)
748  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
749  bool AddExportDynamic = false;
750  for (auto RT : StaticRuntimes) {
751  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
752  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
753  }
754  for (auto RT : NonWholeStaticRuntimes) {
755  addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
756  AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
757  }
758  for (auto S : RequiredSymbols) {
759  CmdArgs.push_back("-u");
760  CmdArgs.push_back(Args.MakeArgString(S));
761  }
762  // If there is a static runtime with no dynamic list, force all the symbols
763  // to be dynamic to be sure we export sanitizer interface functions.
764  if (AddExportDynamic)
765  CmdArgs.push_back("--export-dynamic");
766 
767  const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
768  if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
769  CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
770 
771  return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
772 }
773 
774 bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {
775  if (Args.hasArg(options::OPT_shared))
776  return false;
777 
778  if (TC.getXRayArgs().needsXRayRt()) {
779  CmdArgs.push_back("-whole-archive");
780  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray", false));
781  for (const auto &Mode : TC.getXRayArgs().modeList())
782  CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode, false));
783  CmdArgs.push_back("-no-whole-archive");
784  return true;
785  }
786 
787  return false;
788 }
789 
790 void tools::linkXRayRuntimeDeps(const ToolChain &TC, ArgStringList &CmdArgs) {
791  CmdArgs.push_back("--no-as-needed");
792  CmdArgs.push_back("-lpthread");
793  if (TC.getTriple().getOS() != llvm::Triple::OpenBSD)
794  CmdArgs.push_back("-lrt");
795  CmdArgs.push_back("-lm");
796 
797  if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
798  TC.getTriple().getOS() != llvm::Triple::NetBSD &&
799  TC.getTriple().getOS() != llvm::Triple::OpenBSD)
800  CmdArgs.push_back("-ldl");
801 }
802 
803 bool tools::areOptimizationsEnabled(const ArgList &Args) {
804  // Find the last -O arg and see if it is non-zero.
805  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
806  return !A->getOption().matches(options::OPT_O0);
807  // Defaults to -O0.
808  return false;
809 }
810 
811 const char *tools::SplitDebugName(const ArgList &Args,
812  const InputInfo &Output) {
813  SmallString<128> F(Output.isFilename()
814  ? Output.getFilename()
815  : llvm::sys::path::stem(Output.getBaseInput()));
816 
817  if (Arg *A = Args.getLastArg(options::OPT_gsplit_dwarf_EQ))
818  if (StringRef(A->getValue()) == "single")
819  return Args.MakeArgString(F);
820 
821  llvm::sys::path::replace_extension(F, "dwo");
822  return Args.MakeArgString(F);
823 }
824 
825 void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
826  const JobAction &JA, const ArgList &Args,
827  const InputInfo &Output, const char *OutFile) {
828  ArgStringList ExtractArgs;
829  ExtractArgs.push_back("--extract-dwo");
830 
831  ArgStringList StripArgs;
832  StripArgs.push_back("--strip-dwo");
833 
834  // Grabbing the output of the earlier compile step.
835  StripArgs.push_back(Output.getFilename());
836  ExtractArgs.push_back(Output.getFilename());
837  ExtractArgs.push_back(OutFile);
838 
839  const char *Exec =
840  Args.MakeArgString(TC.GetProgramPath(CLANG_DEFAULT_OBJCOPY));
841  InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
842 
843  // First extract the dwo sections.
844  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, ExtractArgs, II));
845 
846  // Then remove them from the original .o file.
847  C.addCommand(llvm::make_unique<Command>(JA, T, Exec, StripArgs, II));
848 }
849 
850 // Claim options we don't want to warn if they are unused. We do this for
851 // options that build systems might add but are unused when assembling or only
852 // running the preprocessor for example.
853 void tools::claimNoWarnArgs(const ArgList &Args) {
854  // Don't warn about unused -f(no-)?lto. This can happen when we're
855  // preprocessing, precompiling or assembling.
856  Args.ClaimAllArgs(options::OPT_flto_EQ);
857  Args.ClaimAllArgs(options::OPT_flto);
858  Args.ClaimAllArgs(options::OPT_fno_lto);
859 }
860 
861 Arg *tools::getLastProfileUseArg(const ArgList &Args) {
862  auto *ProfileUseArg = Args.getLastArg(
863  options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
864  options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
865  options::OPT_fno_profile_instr_use);
866 
867  if (ProfileUseArg &&
868  ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
869  ProfileUseArg = nullptr;
870 
871  return ProfileUseArg;
872 }
873 
874 Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
875  auto *ProfileSampleUseArg = Args.getLastArg(
876  options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
877  options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
878  options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
879 
880  if (ProfileSampleUseArg &&
881  (ProfileSampleUseArg->getOption().matches(
882  options::OPT_fno_profile_sample_use) ||
883  ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
884  return nullptr;
885 
886  return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
887  options::OPT_fauto_profile_EQ);
888 }
889 
890 /// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
891 /// smooshes them together with platform defaults, to decide whether
892 /// this compile should be using PIC mode or not. Returns a tuple of
893 /// (RelocationModel, PICLevel, IsPIE).
894 std::tuple<llvm::Reloc::Model, unsigned, bool>
895 tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
896  const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
897  const llvm::Triple &Triple = ToolChain.getTriple();
898 
899  bool PIE = ToolChain.isPIEDefault();
900  bool PIC = PIE || ToolChain.isPICDefault();
901  // The Darwin/MachO default to use PIC does not apply when using -static.
902  if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))
903  PIE = PIC = false;
904  bool IsPICLevelTwo = PIC;
905 
906  bool KernelOrKext =
907  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
908 
909  // Android-specific defaults for PIC/PIE
910  if (Triple.isAndroid()) {
911  switch (Triple.getArch()) {
912  case llvm::Triple::arm:
913  case llvm::Triple::armeb:
914  case llvm::Triple::thumb:
915  case llvm::Triple::thumbeb:
916  case llvm::Triple::aarch64:
917  case llvm::Triple::mips:
918  case llvm::Triple::mipsel:
919  case llvm::Triple::mips64:
920  case llvm::Triple::mips64el:
921  PIC = true; // "-fpic"
922  break;
923 
924  case llvm::Triple::x86:
925  case llvm::Triple::x86_64:
926  PIC = true; // "-fPIC"
927  IsPICLevelTwo = true;
928  break;
929 
930  default:
931  break;
932  }
933  }
934 
935  // OpenBSD-specific defaults for PIE
936  if (Triple.getOS() == llvm::Triple::OpenBSD) {
937  switch (ToolChain.getArch()) {
938  case llvm::Triple::arm:
939  case llvm::Triple::aarch64:
940  case llvm::Triple::mips64:
941  case llvm::Triple::mips64el:
942  case llvm::Triple::x86:
943  case llvm::Triple::x86_64:
944  IsPICLevelTwo = false; // "-fpie"
945  break;
946 
947  case llvm::Triple::ppc:
948  case llvm::Triple::sparc:
949  case llvm::Triple::sparcel:
950  case llvm::Triple::sparcv9:
951  IsPICLevelTwo = true; // "-fPIE"
952  break;
953 
954  default:
955  break;
956  }
957  }
958 
959  // AMDGPU-specific defaults for PIC.
960  if (Triple.getArch() == llvm::Triple::amdgcn)
961  PIC = true;
962 
963  // The last argument relating to either PIC or PIE wins, and no
964  // other argument is used. If the last argument is any flavor of the
965  // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
966  // option implicitly enables PIC at the same level.
967  Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
968  options::OPT_fpic, options::OPT_fno_pic,
969  options::OPT_fPIE, options::OPT_fno_PIE,
970  options::OPT_fpie, options::OPT_fno_pie);
971  if (Triple.isOSWindows() && LastPICArg &&
972  LastPICArg ==
973  Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
974  options::OPT_fPIE, options::OPT_fpie)) {
975  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
976  << LastPICArg->getSpelling() << Triple.str();
977  if (Triple.getArch() == llvm::Triple::x86_64)
978  return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
979  return std::make_tuple(llvm::Reloc::Static, 0U, false);
980  }
981 
982  // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
983  // is forced, then neither PIC nor PIE flags will have no effect.
984  if (!ToolChain.isPICDefaultForced()) {
985  if (LastPICArg) {
986  Option O = LastPICArg->getOption();
987  if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
988  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
989  PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
990  PIC =
991  PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
992  IsPICLevelTwo =
993  O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
994  } else {
995  PIE = PIC = false;
996  if (EffectiveTriple.isPS4CPU()) {
997  Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
998  StringRef Model = ModelArg ? ModelArg->getValue() : "";
999  if (Model != "kernel") {
1000  PIC = true;
1001  ToolChain.getDriver().Diag(diag::warn_drv_ps4_force_pic)
1002  << LastPICArg->getSpelling();
1003  }
1004  }
1005  }
1006  }
1007  }
1008 
1009  // Introduce a Darwin and PS4-specific hack. If the default is PIC, but the
1010  // PIC level would've been set to level 1, force it back to level 2 PIC
1011  // instead.
1012  if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS4CPU()))
1013  IsPICLevelTwo |= ToolChain.isPICDefault();
1014 
1015  // This kernel flags are a trump-card: they will disable PIC/PIE
1016  // generation, independent of the argument order.
1017  if (KernelOrKext &&
1018  ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
1019  !EffectiveTriple.isWatchOS()))
1020  PIC = PIE = false;
1021 
1022  if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
1023  // This is a very special mode. It trumps the other modes, almost no one
1024  // uses it, and it isn't even valid on any OS but Darwin.
1025  if (!Triple.isOSDarwin())
1026  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1027  << A->getSpelling() << Triple.str();
1028 
1029  // FIXME: Warn when this flag trumps some other PIC or PIE flag.
1030 
1031  // Only a forced PIC mode can cause the actual compile to have PIC defines
1032  // etc., no flags are sufficient. This behavior was selected to closely
1033  // match that of llvm-gcc and Apple GCC before that.
1034  PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();
1035 
1036  return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
1037  }
1038 
1039  bool EmbeddedPISupported;
1040  switch (Triple.getArch()) {
1041  case llvm::Triple::arm:
1042  case llvm::Triple::armeb:
1043  case llvm::Triple::thumb:
1044  case llvm::Triple::thumbeb:
1045  EmbeddedPISupported = true;
1046  break;
1047  default:
1048  EmbeddedPISupported = false;
1049  break;
1050  }
1051 
1052  bool ROPI = false, RWPI = false;
1053  Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
1054  if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
1055  if (!EmbeddedPISupported)
1056  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1057  << LastROPIArg->getSpelling() << Triple.str();
1058  ROPI = true;
1059  }
1060  Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
1061  if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
1062  if (!EmbeddedPISupported)
1063  ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1064  << LastRWPIArg->getSpelling() << Triple.str();
1065  RWPI = true;
1066  }
1067 
1068  // ROPI and RWPI are not compatible with PIC or PIE.
1069  if ((ROPI || RWPI) && (PIC || PIE))
1070  ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
1071 
1072  if (Triple.isMIPS()) {
1073  StringRef CPUName;
1074  StringRef ABIName;
1075  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1076  // When targeting the N64 ABI, PIC is the default, except in the case
1077  // when the -mno-abicalls option is used. In that case we exit
1078  // at next check regardless of PIC being set below.
1079  if (ABIName == "n64")
1080  PIC = true;
1081  // When targettng MIPS with -mno-abicalls, it's always static.
1082  if(Args.hasArg(options::OPT_mno_abicalls))
1083  return std::make_tuple(llvm::Reloc::Static, 0U, false);
1084  // Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,
1085  // does not use PIC level 2 for historical reasons.
1086  IsPICLevelTwo = false;
1087  }
1088 
1089  if (PIC)
1090  return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
1091 
1092  llvm::Reloc::Model RelocM = llvm::Reloc::Static;
1093  if (ROPI && RWPI)
1094  RelocM = llvm::Reloc::ROPI_RWPI;
1095  else if (ROPI)
1096  RelocM = llvm::Reloc::ROPI;
1097  else if (RWPI)
1098  RelocM = llvm::Reloc::RWPI;
1099 
1100  return std::make_tuple(RelocM, 0U, false);
1101 }
1102 
1103 // `-falign-functions` indicates that the functions should be aligned to a
1104 // 16-byte boundary.
1105 //
1106 // `-falign-functions=1` is the same as `-fno-align-functions`.
1107 //
1108 // The scalar `n` in `-falign-functions=n` must be an integral value between
1109 // [0, 65536]. If the value is not a power-of-two, it will be rounded up to
1110 // the nearest power-of-two.
1111 //
1112 // If we return `0`, the frontend will default to the backend's preferred
1113 // alignment.
1114 //
1115 // NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`
1116 // to mean `-falign-functions=16`. GCC defaults to the backend's preferred
1117 // alignment. For unaligned functions, we default to the backend's preferred
1118 // alignment.
1119 unsigned tools::ParseFunctionAlignment(const ToolChain &TC,
1120  const ArgList &Args) {
1121  const Arg *A = Args.getLastArg(options::OPT_falign_functions,
1122  options::OPT_falign_functions_EQ,
1123  options::OPT_fno_align_functions);
1124  if (!A || A->getOption().matches(options::OPT_fno_align_functions))
1125  return 0;
1126 
1127  if (A->getOption().matches(options::OPT_falign_functions))
1128  return 0;
1129 
1130  unsigned Value = 0;
1131  if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
1132  TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1133  << A->getAsString(Args) << A->getValue();
1134  return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;
1135 }
1136 
1137 void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
1138  ArgStringList &CmdArgs) {
1139  llvm::Reloc::Model RelocationModel;
1140  unsigned PICLevel;
1141  bool IsPIE;
1142  std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
1143 
1144  if (RelocationModel != llvm::Reloc::Static)
1145  CmdArgs.push_back("-KPIC");
1146 }
1147 
1148 /// Determine whether Objective-C automated reference counting is
1149 /// enabled.
1150 bool tools::isObjCAutoRefCount(const ArgList &Args) {
1151  return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
1152 }
1153 
1154 static void AddLibgcc(const llvm::Triple &Triple, const Driver &D,
1155  ArgStringList &CmdArgs, const ArgList &Args) {
1156  bool isAndroid = Triple.isAndroid();
1157  bool isCygMing = Triple.isOSCygMing();
1158  bool IsIAMCU = Triple.isOSIAMCU();
1159  bool StaticLibgcc = Args.hasArg(options::OPT_static_libgcc) ||
1160  Args.hasArg(options::OPT_static);
1161 
1162  // The driver ignores -shared-libgcc and therefore treats such cases as
1163  // unspecified. Breaking out the two variables as below makes the current
1164  // behavior explicit.
1165  bool UnspecifiedLibgcc = !StaticLibgcc;
1166  bool SharedLibgcc = !StaticLibgcc;
1167 
1168  // Gcc adds libgcc arguments in various ways:
1169  //
1170  // gcc <none>: -lgcc --as-needed -lgcc_s --no-as-needed
1171  // g++ <none>: -lgcc_s -lgcc
1172  // gcc shared: -lgcc_s -lgcc
1173  // g++ shared: -lgcc_s -lgcc
1174  // gcc static: -lgcc -lgcc_eh
1175  // g++ static: -lgcc -lgcc_eh
1176  //
1177  // Also, certain targets need additional adjustments.
1178 
1179  bool LibGccFirst = (D.CCCIsCC() && UnspecifiedLibgcc) || StaticLibgcc;
1180  if (LibGccFirst)
1181  CmdArgs.push_back("-lgcc");
1182 
1183  bool AsNeeded = D.CCCIsCC() && !StaticLibgcc && !isAndroid && !isCygMing;
1184  if (AsNeeded)
1185  CmdArgs.push_back("--as-needed");
1186 
1187  if ((UnspecifiedLibgcc || SharedLibgcc) && !isAndroid)
1188  CmdArgs.push_back("-lgcc_s");
1189 
1190  else if (StaticLibgcc && !isAndroid && !IsIAMCU)
1191  CmdArgs.push_back("-lgcc_eh");
1192 
1193  if (AsNeeded)
1194  CmdArgs.push_back("--no-as-needed");
1195 
1196  if (!LibGccFirst)
1197  CmdArgs.push_back("-lgcc");
1198 
1199  // According to Android ABI, we have to link with libdl if we are
1200  // linking with non-static libgcc.
1201  //
1202  // NOTE: This fixes a link error on Android MIPS as well. The non-static
1203  // libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl.
1204  if (isAndroid && !StaticLibgcc)
1205  CmdArgs.push_back("-ldl");
1206 }
1207 
1208 void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
1209  ArgStringList &CmdArgs, const ArgList &Args) {
1210  // Make use of compiler-rt if --rtlib option is used
1212 
1213  switch (RLT) {
1215  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
1216  break;
1217  case ToolChain::RLT_Libgcc:
1218  // Make sure libgcc is not used under MSVC environment by default
1219  if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1220  // Issue error diagnostic if libgcc is explicitly specified
1221  // through command line as --rtlib option argument.
1222  if (Args.hasArg(options::OPT_rtlib_EQ)) {
1223  TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
1224  << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC";
1225  }
1226  } else
1227  AddLibgcc(TC.getTriple(), D, CmdArgs, Args);
1228  break;
1229  }
1230 }
1231 
1232 /// Add OpenMP linker script arguments at the end of the argument list so that
1233 /// the fat binary is built by embedding each of the device images into the
1234 /// host. The linker script also defines a few symbols required by the code
1235 /// generation so that the images can be easily retrieved at runtime by the
1236 /// offloading library. This should be used only in tool chains that support
1237 /// linker scripts.
1238 void tools::AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C,
1239  const InputInfo &Output,
1240  const InputInfoList &Inputs,
1241  const ArgList &Args, ArgStringList &CmdArgs,
1242  const JobAction &JA) {
1243 
1244  // If this is not an OpenMP host toolchain, we don't need to do anything.
1246  return;
1247 
1248  // Create temporary linker script. Keep it if save-temps is enabled.
1249  const char *LKS;
1250  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
1251  if (C.getDriver().isSaveTempsEnabled()) {
1252  llvm::sys::path::replace_extension(Name, "lk");
1253  LKS = C.getArgs().MakeArgString(Name.c_str());
1254  } else {
1255  llvm::sys::path::replace_extension(Name, "");
1256  Name = C.getDriver().GetTemporaryPath(Name, "lk");
1257  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
1258  }
1259 
1260  // Add linker script option to the command.
1261  CmdArgs.push_back("-T");
1262  CmdArgs.push_back(LKS);
1263 
1264  // Create a buffer to write the contents of the linker script.
1265  std::string LksBuffer;
1266  llvm::raw_string_ostream LksStream(LksBuffer);
1267 
1268  // Get the OpenMP offload tool chains so that we can extract the triple
1269  // associated with each device input.
1270  auto OpenMPToolChains = C.getOffloadToolChains<Action::OFK_OpenMP>();
1271  assert(OpenMPToolChains.first != OpenMPToolChains.second &&
1272  "No OpenMP toolchains??");
1273 
1274  // Track the input file name and device triple in order to build the script,
1275  // inserting binaries in the designated sections.
1277 
1278  // Add commands to embed target binaries. We ensure that each section and
1279  // image is 16-byte aligned. This is not mandatory, but increases the
1280  // likelihood of data to be aligned with a cache block in several main host
1281  // machines.
1282  LksStream << "/*\n";
1283  LksStream << " OpenMP Offload Linker Script\n";
1284  LksStream << " *** Automatically generated by Clang ***\n";
1285  LksStream << "*/\n";
1286  LksStream << "TARGET(binary)\n";
1287  auto DTC = OpenMPToolChains.first;
1288  for (auto &II : Inputs) {
1289  const Action *A = II.getAction();
1290  // Is this a device linking action?
1291  if (A && isa<LinkJobAction>(A) &&
1293  assert(DTC != OpenMPToolChains.second &&
1294  "More device inputs than device toolchains??");
1295  InputBinaryInfo.push_back(std::make_pair(
1296  DTC->second->getTriple().normalize(), II.getFilename()));
1297  ++DTC;
1298  LksStream << "INPUT(" << II.getFilename() << ")\n";
1299  }
1300  }
1301 
1302  assert(DTC == OpenMPToolChains.second &&
1303  "Less device inputs than device toolchains??");
1304 
1305  LksStream << "SECTIONS\n";
1306  LksStream << "{\n";
1307 
1308  // Put each target binary into a separate section.
1309  for (const auto &BI : InputBinaryInfo) {
1310  LksStream << " .omp_offloading." << BI.first << " :\n";
1311  LksStream << " ALIGN(0x10)\n";
1312  LksStream << " {\n";
1313  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_start." << BI.first
1314  << " = .);\n";
1315  LksStream << " " << BI.second << "\n";
1316  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_end." << BI.first
1317  << " = .);\n";
1318  LksStream << " }\n";
1319  }
1320 
1321  // Add commands to define host entries begin and end. We use 1-byte subalign
1322  // so that the linker does not add any padding and the elements in this
1323  // section form an array.
1324  LksStream << " .omp_offloading.entries :\n";
1325  LksStream << " ALIGN(0x10)\n";
1326  LksStream << " SUBALIGN(0x01)\n";
1327  LksStream << " {\n";
1328  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_begin = .);\n";
1329  LksStream << " *(.omp_offloading.entries)\n";
1330  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_end = .);\n";
1331  LksStream << " }\n";
1332  LksStream << "}\n";
1333  LksStream << "INSERT BEFORE .data\n";
1334  LksStream.flush();
1335 
1336  // Dump the contents of the linker script if the user requested that. We
1337  // support this option to enable testing of behavior with -###.
1338  if (C.getArgs().hasArg(options::OPT_fopenmp_dump_offload_linker_script))
1339  llvm::errs() << LksBuffer;
1340 
1341  // If this is a dry run, do not create the linker script file.
1342  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1343  return;
1344 
1345  // Open script file and write the contents.
1346  std::error_code EC;
1347  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
1348 
1349  if (EC) {
1350  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1351  return;
1352  }
1353 
1354  Lksf << LksBuffer;
1355 }
1356 
1357 /// Add HIP linker script arguments at the end of the argument list so that
1358 /// the fat binary is built by embedding the device images into the host. The
1359 /// linker script also defines a symbol required by the code generation so that
1360 /// the image can be retrieved at runtime. This should be used only in tool
1361 /// chains that support linker scripts.
1362 void tools::AddHIPLinkerScript(const ToolChain &TC, Compilation &C,
1363  const InputInfo &Output,
1364  const InputInfoList &Inputs, const ArgList &Args,
1365  ArgStringList &CmdArgs, const JobAction &JA,
1366  const Tool &T) {
1367 
1368  // If this is not a HIP host toolchain, we don't need to do anything.
1370  return;
1371 
1372  InputInfoList DeviceInputs;
1373  for (const auto &II : Inputs) {
1374  const Action *A = II.getAction();
1375  // Is this a device linking action?
1376  if (A && isa<LinkJobAction>(A) && A->isDeviceOffloading(Action::OFK_HIP)) {
1377  DeviceInputs.push_back(II);
1378  }
1379  }
1380 
1381  if (DeviceInputs.empty())
1382  return;
1383 
1384  // Create temporary linker script. Keep it if save-temps is enabled.
1385  const char *LKS;
1386  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
1387  if (C.getDriver().isSaveTempsEnabled()) {
1388  llvm::sys::path::replace_extension(Name, "lk");
1389  LKS = C.getArgs().MakeArgString(Name.c_str());
1390  } else {
1391  llvm::sys::path::replace_extension(Name, "");
1392  Name = C.getDriver().GetTemporaryPath(Name, "lk");
1393  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
1394  }
1395 
1396  // Add linker script option to the command.
1397  CmdArgs.push_back("-T");
1398  CmdArgs.push_back(LKS);
1399 
1400  // Create a buffer to write the contents of the linker script.
1401  std::string LksBuffer;
1402  llvm::raw_string_ostream LksStream(LksBuffer);
1403 
1404  // Get the HIP offload tool chain.
1405  auto *HIPTC = static_cast<const toolchains::CudaToolChain *>(
1407  assert(HIPTC->getTriple().getArch() == llvm::Triple::amdgcn &&
1408  "Wrong platform");
1409  (void)HIPTC;
1410 
1411  // The output file name needs to persist through the compilation, therefore
1412  // it needs to be created through MakeArgString.
1413  std::string BundleFileName = C.getDriver().GetTemporaryPath("BUNDLE", "hipfb");
1414  const char *BundleFile =
1415  C.addTempFile(C.getArgs().MakeArgString(BundleFileName.c_str()));
1416  AMDGCN::constructHIPFatbinCommand(C, JA, BundleFile, DeviceInputs, Args, T);
1417 
1418  // Add commands to embed target binaries. We ensure that each section and
1419  // image is 16-byte aligned. This is not mandatory, but increases the
1420  // likelihood of data to be aligned with a cache block in several main host
1421  // machines.
1422  LksStream << "/*\n";
1423  LksStream << " HIP Offload Linker Script\n";
1424  LksStream << " *** Automatically generated by Clang ***\n";
1425  LksStream << "*/\n";
1426  LksStream << "TARGET(binary)\n";
1427  LksStream << "INPUT(" << BundleFileName << ")\n";
1428  LksStream << "SECTIONS\n";
1429  LksStream << "{\n";
1430  LksStream << " .hip_fatbin :\n";
1431  LksStream << " ALIGN(0x10)\n";
1432  LksStream << " {\n";
1433  LksStream << " PROVIDE_HIDDEN(__hip_fatbin = .);\n";
1434  LksStream << " " << BundleFileName << "\n";
1435  LksStream << " }\n";
1436  LksStream << " /DISCARD/ :\n";
1437  LksStream << " {\n";
1438  LksStream << " * ( __CLANG_OFFLOAD_BUNDLE__* )\n";
1439  LksStream << " }\n";
1440  LksStream << "}\n";
1441  LksStream << "INSERT BEFORE .data\n";
1442  LksStream.flush();
1443 
1444  // Dump the contents of the linker script if the user requested that. We
1445  // support this option to enable testing of behavior with -###.
1446  if (C.getArgs().hasArg(options::OPT_fhip_dump_offload_linker_script))
1447  llvm::errs() << LksBuffer;
1448 
1449  // If this is a dry run, do not create the linker script file.
1450  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1451  return;
1452 
1453  // Open script file and write the contents.
1454  std::error_code EC;
1455  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
1456 
1457  if (EC) {
1458  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1459  return;
1460  }
1461 
1462  Lksf << LksBuffer;
1463 }
1464 
1465 SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,
1466  const InputInfo &Output,
1467  const InputInfo &Input,
1468  const Driver &D) {
1469  const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);
1470  if (!A)
1471  return {};
1472 
1473  StringRef SaveStats = A->getValue();
1474  SmallString<128> StatsFile;
1475  if (SaveStats == "obj" && Output.isFilename()) {
1476  StatsFile.assign(Output.getFilename());
1477  llvm::sys::path::remove_filename(StatsFile);
1478  } else if (SaveStats != "cwd") {
1479  D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
1480  return {};
1481  }
1482 
1483  StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
1484  llvm::sys::path::append(StatsFile, BaseName);
1485  llvm::sys::path::replace_extension(StatsFile, "stats");
1486  return StatsFile;
1487 }
void handleTargetFeaturesGroup(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier Group)
SmallVector< std::string, 16 > path_list
Definition: ToolChain.h:91
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:547
virtual void AddCCKextLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCCKextLibArgs - Add the system specific linker arguments to use for kernel extensions (Darwin-spec...
Definition: ToolChain.cpp:789
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:4453
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:392
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Output)
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:372
StringRef P
Defines types useful for describing an Objective-C runtime.
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:122
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:202
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:109
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:527
static void AddLibgcc(const llvm::Triple &Triple, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
const char * getFilename() const
Definition: InputInfo.h:84
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
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:120
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfo &Input, bool IsThinLTO)
std::string getAArch64TargetCPU(const llvm::opt::ArgList &Args, llvm::opt::Arg *&A)
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Sanitizer)
Definition: CommonArgs.cpp:543
Action - Represent an abstract compilation step to perform.
Definition: Action.h:48
std::string getTripleString() const
Definition: ToolChain.h:211
static std::string getNios2TargetCPU(const ArgList &Args)
Definition: CommonArgs.cpp:223
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:23
void addArchSpecificRPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:205
The LLVM OpenMP runtime.
Definition: Driver.h:95
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:58
An unknown OpenMP runtime.
Definition: Driver.h:91
bool needsXRayRt() const
Definition: XRayArgs.h:41
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
void AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:297
void addDirectoryList(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const char *ArgName, const char *EnvVar)
void linkXRayRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
llvm::ArrayRef< std::string > modeList() const
Definition: XRayArgs.h:42
void constructHIPFatbinCommand(Compilation &C, const JobAction &JA, StringRef OutputFileName, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const Tool &T)
Definition: HIP.cpp:189
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:246
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:216
Defines version macros and version-related utility functions for Clang.
static const StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:576
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:206
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:365
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
const char * getX86TargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
const_offload_toolchains_range getOffloadToolChains() const
Definition: Compilation.h:151
unsigned ParseFunctionAlignment(const ToolChain &TC, const llvm::opt::ArgList &Args)
path_list & getLibraryPaths()
Definition: ToolChain.h:221
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:202
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:187
const Driver & getDriver() const
Definition: ToolChain.h:186
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:105
bool isSaveTempsEnabled() const
Definition: Driver.h:325
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:475
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:664
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:102
static void addSanitizerLibPath(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Name)
Definition: CommonArgs.cpp:563
std::string getARMTargetCPU(StringRef CPU, llvm::StringRef Arch, const llvm::Triple &Triple)
Dataflow Directional Tag Classes.
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
unsigned getLTOParallelism(const llvm::opt::ArgList &Args, const Driver &D)
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
The GNU OpenMP runtime.
Definition: Driver.h:100
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:116
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:238
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:46
const Driver & getDriver() const
Definition: Compilation.h:134
const llvm::Triple & getTriple() const
Definition: ToolChain.h:188
std::string getArchSpecificLibPath() const
Definition: ToolChain.cpp:398
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:435
const char * getBaseInput() const
Definition: InputInfo.h:79
static std::string getR600TargetGPU(const ArgList &Args)
Get the (LLVM) name of the R600 gpu we are targeting.
Definition: CommonArgs.cpp:207
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:62
bool isFilename() const
Definition: InputInfo.h:76
virtual bool isCrossCompiling() const
Returns true if the toolchain is targeting a non-native architecture.
Definition: ToolChain.cpp:479
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:233
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:164
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
__DEVICE__ int min(int __a, int __b)
bool CCCIsCC() const
Whether the driver should follow gcc like behavior.
Definition: Driver.h:179
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:154
static void collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args, SmallVectorImpl< StringRef > &SharedRuntimes, SmallVectorImpl< StringRef > &StaticRuntimes, SmallVectorImpl< StringRef > &NonWholeStaticRuntimes, SmallVectorImpl< StringRef > &HelperStaticRuntimes, SmallVectorImpl< StringRef > &RequiredSymbols)
Definition: CommonArgs.cpp:623
virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: ToolChain.cpp:761
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:89