clang  6.0.0svn
Driver.cpp
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1 //===--- Driver.cpp - Clang GCC Compatible Driver -------------------------===//
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 "clang/Driver/Driver.h"
11 #include "InputInfo.h"
12 #include "ToolChains/AMDGPU.h"
13 #include "ToolChains/AVR.h"
14 #include "ToolChains/Ananas.h"
15 #include "ToolChains/Clang.h"
16 #include "ToolChains/CloudABI.h"
17 #include "ToolChains/Contiki.h"
19 #include "ToolChains/Cuda.h"
20 #include "ToolChains/Darwin.h"
21 #include "ToolChains/DragonFly.h"
22 #include "ToolChains/FreeBSD.h"
23 #include "ToolChains/Fuchsia.h"
24 #include "ToolChains/Gnu.h"
25 #include "ToolChains/BareMetal.h"
26 #include "ToolChains/Haiku.h"
27 #include "ToolChains/Hexagon.h"
28 #include "ToolChains/Lanai.h"
29 #include "ToolChains/Linux.h"
30 #include "ToolChains/MinGW.h"
31 #include "ToolChains/Minix.h"
32 #include "ToolChains/MipsLinux.h"
33 #include "ToolChains/MSVC.h"
34 #include "ToolChains/Myriad.h"
35 #include "ToolChains/NaCl.h"
36 #include "ToolChains/NetBSD.h"
37 #include "ToolChains/OpenBSD.h"
38 #include "ToolChains/PS4CPU.h"
39 #include "ToolChains/Solaris.h"
40 #include "ToolChains/TCE.h"
41 #include "ToolChains/WebAssembly.h"
42 #include "ToolChains/XCore.h"
43 #include "clang/Basic/Version.h"
45 #include "clang/Config/config.h"
46 #include "clang/Driver/Action.h"
49 #include "clang/Driver/Job.h"
50 #include "clang/Driver/Options.h"
52 #include "clang/Driver/Tool.h"
53 #include "clang/Driver/ToolChain.h"
54 #include "llvm/ADT/ArrayRef.h"
55 #include "llvm/ADT/STLExtras.h"
56 #include "llvm/ADT/SmallSet.h"
57 #include "llvm/ADT/StringExtras.h"
58 #include "llvm/ADT/StringSet.h"
59 #include "llvm/ADT/StringSwitch.h"
60 #include "llvm/Option/Arg.h"
61 #include "llvm/Option/ArgList.h"
62 #include "llvm/Option/OptSpecifier.h"
63 #include "llvm/Option/OptTable.h"
64 #include "llvm/Option/Option.h"
65 #include "llvm/Support/ErrorHandling.h"
66 #include "llvm/Support/FileSystem.h"
67 #include "llvm/Support/Path.h"
68 #include "llvm/Support/PrettyStackTrace.h"
69 #include "llvm/Support/Process.h"
70 #include "llvm/Support/Program.h"
71 #include "llvm/Support/TargetRegistry.h"
72 #include "llvm/Support/raw_ostream.h"
73 #include <map>
74 #include <memory>
75 #include <utility>
76 #if LLVM_ON_UNIX
77 #include <unistd.h> // getpid
78 #endif
79 
80 using namespace clang::driver;
81 using namespace clang;
82 using namespace llvm::opt;
83 
84 Driver::Driver(StringRef ClangExecutable, StringRef DefaultTargetTriple,
85  DiagnosticsEngine &Diags,
87  : Opts(createDriverOptTable()), Diags(Diags), VFS(std::move(VFS)),
88  Mode(GCCMode), SaveTemps(SaveTempsNone), BitcodeEmbed(EmbedNone),
89  LTOMode(LTOK_None), ClangExecutable(ClangExecutable),
90  SysRoot(DEFAULT_SYSROOT),
91  DriverTitle("clang LLVM compiler"), CCPrintOptionsFilename(nullptr),
92  CCPrintHeadersFilename(nullptr), CCLogDiagnosticsFilename(nullptr),
93  CCCPrintBindings(false), CCPrintHeaders(false), CCLogDiagnostics(false),
94  CCGenDiagnostics(false), DefaultTargetTriple(DefaultTargetTriple),
95  CCCGenericGCCName(""), CheckInputsExist(true), CCCUsePCH(true),
96  GenReproducer(false), SuppressMissingInputWarning(false) {
97 
98  // Provide a sane fallback if no VFS is specified.
99  if (!this->VFS)
100  this->VFS = vfs::getRealFileSystem();
101 
102  Name = llvm::sys::path::filename(ClangExecutable);
103  Dir = llvm::sys::path::parent_path(ClangExecutable);
104  InstalledDir = Dir; // Provide a sensible default installed dir.
105 
106  // Compute the path to the resource directory.
107  StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
109  if (ClangResourceDir != "") {
110  llvm::sys::path::append(P, ClangResourceDir);
111  } else {
112  StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX);
113  P = llvm::sys::path::parent_path(Dir);
114  llvm::sys::path::append(P, Twine("lib") + ClangLibdirSuffix, "clang",
115  CLANG_VERSION_STRING);
116  }
117  ResourceDir = P.str();
118 }
119 
120 void Driver::ParseDriverMode(StringRef ProgramName,
121  ArrayRef<const char *> Args) {
123  setDriverModeFromOption(ClangNameParts.DriverMode);
124 
125  for (const char *ArgPtr : Args) {
126  // Ingore nullptrs, they are response file's EOL markers
127  if (ArgPtr == nullptr)
128  continue;
129  const StringRef Arg = ArgPtr;
130  setDriverModeFromOption(Arg);
131  }
132 }
133 
134 void Driver::setDriverModeFromOption(StringRef Opt) {
135  const std::string OptName =
136  getOpts().getOption(options::OPT_driver_mode).getPrefixedName();
137  if (!Opt.startswith(OptName))
138  return;
139  StringRef Value = Opt.drop_front(OptName.size());
140 
141  const unsigned M = llvm::StringSwitch<unsigned>(Value)
142  .Case("gcc", GCCMode)
143  .Case("g++", GXXMode)
144  .Case("cpp", CPPMode)
145  .Case("cl", CLMode)
146  .Default(~0U);
147 
148  if (M != ~0U)
149  Mode = static_cast<DriverMode>(M);
150  else
151  Diag(diag::err_drv_unsupported_option_argument) << OptName << Value;
152 }
153 
155  bool &ContainsError) {
156  llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
157  ContainsError = false;
158 
159  unsigned IncludedFlagsBitmask;
160  unsigned ExcludedFlagsBitmask;
161  std::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
162  getIncludeExcludeOptionFlagMasks();
163 
164  unsigned MissingArgIndex, MissingArgCount;
165  InputArgList Args =
166  getOpts().ParseArgs(ArgStrings, MissingArgIndex, MissingArgCount,
167  IncludedFlagsBitmask, ExcludedFlagsBitmask);
168 
169  // Check for missing argument error.
170  if (MissingArgCount) {
171  Diag(diag::err_drv_missing_argument)
172  << Args.getArgString(MissingArgIndex) << MissingArgCount;
173  ContainsError |=
174  Diags.getDiagnosticLevel(diag::err_drv_missing_argument,
176  }
177 
178  // Check for unsupported options.
179  for (const Arg *A : Args) {
180  if (A->getOption().hasFlag(options::Unsupported)) {
181  Diag(diag::err_drv_unsupported_opt) << A->getAsString(Args);
182  ContainsError |= Diags.getDiagnosticLevel(diag::err_drv_unsupported_opt,
183  SourceLocation()) >
185  continue;
186  }
187 
188  // Warn about -mcpu= without an argument.
189  if (A->getOption().matches(options::OPT_mcpu_EQ) && A->containsValue("")) {
190  Diag(diag::warn_drv_empty_joined_argument) << A->getAsString(Args);
191  ContainsError |= Diags.getDiagnosticLevel(
192  diag::warn_drv_empty_joined_argument,
194  }
195  }
196 
197  for (const Arg *A : Args.filtered(options::OPT_UNKNOWN)) {
198  auto ID = IsCLMode() ? diag::warn_drv_unknown_argument_clang_cl
199  : diag::err_drv_unknown_argument;
200 
201  Diags.Report(ID) << A->getAsString(Args);
202  ContainsError |= Diags.getDiagnosticLevel(ID, SourceLocation()) >
204  }
205 
206  return Args;
207 }
208 
209 // Determine which compilation mode we are in. We look for options which
210 // affect the phase, starting with the earliest phases, and record which
211 // option we used to determine the final phase.
212 phases::ID Driver::getFinalPhase(const DerivedArgList &DAL,
213  Arg **FinalPhaseArg) const {
214  Arg *PhaseArg = nullptr;
215  phases::ID FinalPhase;
216 
217  // -{E,EP,P,M,MM} only run the preprocessor.
218  if (CCCIsCPP() || (PhaseArg = DAL.getLastArg(options::OPT_E)) ||
219  (PhaseArg = DAL.getLastArg(options::OPT__SLASH_EP)) ||
220  (PhaseArg = DAL.getLastArg(options::OPT_M, options::OPT_MM)) ||
221  (PhaseArg = DAL.getLastArg(options::OPT__SLASH_P))) {
222  FinalPhase = phases::Preprocess;
223 
224  // --precompile only runs up to precompilation.
225  } else if ((PhaseArg = DAL.getLastArg(options::OPT__precompile))) {
226  FinalPhase = phases::Precompile;
227 
228  // -{fsyntax-only,-analyze,emit-ast} only run up to the compiler.
229  } else if ((PhaseArg = DAL.getLastArg(options::OPT_fsyntax_only)) ||
230  (PhaseArg = DAL.getLastArg(options::OPT_module_file_info)) ||
231  (PhaseArg = DAL.getLastArg(options::OPT_verify_pch)) ||
232  (PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) ||
233  (PhaseArg = DAL.getLastArg(options::OPT_rewrite_legacy_objc)) ||
234  (PhaseArg = DAL.getLastArg(options::OPT__migrate)) ||
235  (PhaseArg = DAL.getLastArg(options::OPT__analyze,
236  options::OPT__analyze_auto)) ||
237  (PhaseArg = DAL.getLastArg(options::OPT_emit_ast))) {
238  FinalPhase = phases::Compile;
239 
240  // -S only runs up to the backend.
241  } else if ((PhaseArg = DAL.getLastArg(options::OPT_S))) {
242  FinalPhase = phases::Backend;
243 
244  // -c compilation only runs up to the assembler.
245  } else if ((PhaseArg = DAL.getLastArg(options::OPT_c))) {
246  FinalPhase = phases::Assemble;
247 
248  // Otherwise do everything.
249  } else
250  FinalPhase = phases::Link;
251 
252  if (FinalPhaseArg)
253  *FinalPhaseArg = PhaseArg;
254 
255  return FinalPhase;
256 }
257 
258 static Arg *MakeInputArg(DerivedArgList &Args, OptTable &Opts,
259  StringRef Value) {
260  Arg *A = new Arg(Opts.getOption(options::OPT_INPUT), Value,
261  Args.getBaseArgs().MakeIndex(Value), Value.data());
262  Args.AddSynthesizedArg(A);
263  A->claim();
264  return A;
265 }
266 
267 DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
268  DerivedArgList *DAL = new DerivedArgList(Args);
269 
270  bool HasNostdlib = Args.hasArg(options::OPT_nostdlib);
271  bool HasNodefaultlib = Args.hasArg(options::OPT_nodefaultlibs);
272  for (Arg *A : Args) {
273  // Unfortunately, we have to parse some forwarding options (-Xassembler,
274  // -Xlinker, -Xpreprocessor) because we either integrate their functionality
275  // (assembler and preprocessor), or bypass a previous driver ('collect2').
276 
277  // Rewrite linker options, to replace --no-demangle with a custom internal
278  // option.
279  if ((A->getOption().matches(options::OPT_Wl_COMMA) ||
280  A->getOption().matches(options::OPT_Xlinker)) &&
281  A->containsValue("--no-demangle")) {
282  // Add the rewritten no-demangle argument.
283  DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle));
284 
285  // Add the remaining values as Xlinker arguments.
286  for (StringRef Val : A->getValues())
287  if (Val != "--no-demangle")
288  DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker), Val);
289 
290  continue;
291  }
292 
293  // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by
294  // some build systems. We don't try to be complete here because we don't
295  // care to encourage this usage model.
296  if (A->getOption().matches(options::OPT_Wp_COMMA) &&
297  (A->getValue(0) == StringRef("-MD") ||
298  A->getValue(0) == StringRef("-MMD"))) {
299  // Rewrite to -MD/-MMD along with -MF.
300  if (A->getValue(0) == StringRef("-MD"))
301  DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD));
302  else
303  DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD));
304  if (A->getNumValues() == 2)
305  DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF),
306  A->getValue(1));
307  continue;
308  }
309 
310  // Rewrite reserved library names.
311  if (A->getOption().matches(options::OPT_l)) {
312  StringRef Value = A->getValue();
313 
314  // Rewrite unless -nostdlib is present.
315  if (!HasNostdlib && !HasNodefaultlib && Value == "stdc++") {
316  DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_reserved_lib_stdcxx));
317  continue;
318  }
319 
320  // Rewrite unconditionally.
321  if (Value == "cc_kext") {
322  DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_reserved_lib_cckext));
323  continue;
324  }
325  }
326 
327  // Pick up inputs via the -- option.
328  if (A->getOption().matches(options::OPT__DASH_DASH)) {
329  A->claim();
330  for (StringRef Val : A->getValues())
331  DAL->append(MakeInputArg(*DAL, *Opts, Val));
332  continue;
333  }
334 
335  DAL->append(A);
336  }
337 
338  // Enforce -static if -miamcu is present.
339  if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false))
340  DAL->AddFlagArg(0, Opts->getOption(options::OPT_static));
341 
342 // Add a default value of -mlinker-version=, if one was given and the user
343 // didn't specify one.
344 #if defined(HOST_LINK_VERSION)
345  if (!Args.hasArg(options::OPT_mlinker_version_EQ) &&
346  strlen(HOST_LINK_VERSION) > 0) {
347  DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ),
348  HOST_LINK_VERSION);
349  DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim();
350  }
351 #endif
352 
353  return DAL;
354 }
355 
356 /// \brief Compute target triple from args.
357 ///
358 /// This routine provides the logic to compute a target triple from various
359 /// args passed to the driver and the default triple string.
360 static llvm::Triple computeTargetTriple(const Driver &D,
361  StringRef DefaultTargetTriple,
362  const ArgList &Args,
363  StringRef DarwinArchName = "") {
364  // FIXME: Already done in Compilation *Driver::BuildCompilation
365  if (const Arg *A = Args.getLastArg(options::OPT_target))
366  DefaultTargetTriple = A->getValue();
367 
368  llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple));
369 
370  // Handle Apple-specific options available here.
371  if (Target.isOSBinFormatMachO()) {
372  // If an explict Darwin arch name is given, that trumps all.
373  if (!DarwinArchName.empty()) {
374  tools::darwin::setTripleTypeForMachOArchName(Target, DarwinArchName);
375  return Target;
376  }
377 
378  // Handle the Darwin '-arch' flag.
379  if (Arg *A = Args.getLastArg(options::OPT_arch)) {
380  StringRef ArchName = A->getValue();
382  }
383  }
384 
385  // Handle pseudo-target flags '-mlittle-endian'/'-EL' and
386  // '-mbig-endian'/'-EB'.
387  if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
388  options::OPT_mbig_endian)) {
389  if (A->getOption().matches(options::OPT_mlittle_endian)) {
390  llvm::Triple LE = Target.getLittleEndianArchVariant();
391  if (LE.getArch() != llvm::Triple::UnknownArch)
392  Target = std::move(LE);
393  } else {
394  llvm::Triple BE = Target.getBigEndianArchVariant();
395  if (BE.getArch() != llvm::Triple::UnknownArch)
396  Target = std::move(BE);
397  }
398  }
399 
400  // Skip further flag support on OSes which don't support '-m32' or '-m64'.
401  if (Target.getArch() == llvm::Triple::tce ||
402  Target.getOS() == llvm::Triple::Minix)
403  return Target;
404 
405  // Handle pseudo-target flags '-m64', '-mx32', '-m32' and '-m16'.
406  Arg *A = Args.getLastArg(options::OPT_m64, options::OPT_mx32,
407  options::OPT_m32, options::OPT_m16);
408  if (A) {
409  llvm::Triple::ArchType AT = llvm::Triple::UnknownArch;
410 
411  if (A->getOption().matches(options::OPT_m64)) {
412  AT = Target.get64BitArchVariant().getArch();
413  if (Target.getEnvironment() == llvm::Triple::GNUX32)
414  Target.setEnvironment(llvm::Triple::GNU);
415  } else if (A->getOption().matches(options::OPT_mx32) &&
416  Target.get64BitArchVariant().getArch() == llvm::Triple::x86_64) {
417  AT = llvm::Triple::x86_64;
418  Target.setEnvironment(llvm::Triple::GNUX32);
419  } else if (A->getOption().matches(options::OPT_m32)) {
420  AT = Target.get32BitArchVariant().getArch();
421  if (Target.getEnvironment() == llvm::Triple::GNUX32)
422  Target.setEnvironment(llvm::Triple::GNU);
423  } else if (A->getOption().matches(options::OPT_m16) &&
424  Target.get32BitArchVariant().getArch() == llvm::Triple::x86) {
425  AT = llvm::Triple::x86;
426  Target.setEnvironment(llvm::Triple::CODE16);
427  }
428 
429  if (AT != llvm::Triple::UnknownArch && AT != Target.getArch())
430  Target.setArch(AT);
431  }
432 
433  // Handle -miamcu flag.
434  if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
435  if (Target.get32BitArchVariant().getArch() != llvm::Triple::x86)
436  D.Diag(diag::err_drv_unsupported_opt_for_target) << "-miamcu"
437  << Target.str();
438 
439  if (A && !A->getOption().matches(options::OPT_m32))
440  D.Diag(diag::err_drv_argument_not_allowed_with)
441  << "-miamcu" << A->getBaseArg().getAsString(Args);
442 
443  Target.setArch(llvm::Triple::x86);
444  Target.setArchName("i586");
445  Target.setEnvironment(llvm::Triple::UnknownEnvironment);
446  Target.setEnvironmentName("");
447  Target.setOS(llvm::Triple::ELFIAMCU);
448  Target.setVendor(llvm::Triple::UnknownVendor);
449  Target.setVendorName("intel");
450  }
451 
452  return Target;
453 }
454 
455 // \brief Parse the LTO options and record the type of LTO compilation
456 // based on which -f(no-)?lto(=.*)? option occurs last.
457 void Driver::setLTOMode(const llvm::opt::ArgList &Args) {
458  LTOMode = LTOK_None;
459  if (!Args.hasFlag(options::OPT_flto, options::OPT_flto_EQ,
460  options::OPT_fno_lto, false))
461  return;
462 
463  StringRef LTOName("full");
464 
465  const Arg *A = Args.getLastArg(options::OPT_flto_EQ);
466  if (A)
467  LTOName = A->getValue();
468 
469  LTOMode = llvm::StringSwitch<LTOKind>(LTOName)
470  .Case("full", LTOK_Full)
471  .Case("thin", LTOK_Thin)
472  .Default(LTOK_Unknown);
473 
474  if (LTOMode == LTOK_Unknown) {
475  assert(A);
476  Diag(diag::err_drv_unsupported_option_argument) << A->getOption().getName()
477  << A->getValue();
478  }
479 }
480 
481 /// Compute the desired OpenMP runtime from the flags provided.
483  StringRef RuntimeName(CLANG_DEFAULT_OPENMP_RUNTIME);
484 
485  const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ);
486  if (A)
487  RuntimeName = A->getValue();
488 
489  auto RT = llvm::StringSwitch<OpenMPRuntimeKind>(RuntimeName)
490  .Case("libomp", OMPRT_OMP)
491  .Case("libgomp", OMPRT_GOMP)
492  .Case("libiomp5", OMPRT_IOMP5)
493  .Default(OMPRT_Unknown);
494 
495  if (RT == OMPRT_Unknown) {
496  if (A)
497  Diag(diag::err_drv_unsupported_option_argument)
498  << A->getOption().getName() << A->getValue();
499  else
500  // FIXME: We could use a nicer diagnostic here.
501  Diag(diag::err_drv_unsupported_opt) << "-fopenmp";
502  }
503 
504  return RT;
505 }
506 
508  InputList &Inputs) {
509 
510  //
511  // CUDA
512  //
513  // We need to generate a CUDA toolchain if any of the inputs has a CUDA type.
514  if (llvm::any_of(Inputs, [](std::pair<types::ID, const llvm::opt::Arg *> &I) {
515  return types::isCuda(I.first);
516  })) {
518  const llvm::Triple &HostTriple = HostTC->getTriple();
519  llvm::Triple CudaTriple(HostTriple.isArch64Bit() ? "nvptx64-nvidia-cuda"
520  : "nvptx-nvidia-cuda");
521  // Use the CUDA and host triples as the key into the ToolChains map, because
522  // the device toolchain we create depends on both.
523  auto &CudaTC = ToolChains[CudaTriple.str() + "/" + HostTriple.str()];
524  if (!CudaTC) {
525  CudaTC = llvm::make_unique<toolchains::CudaToolChain>(
526  *this, CudaTriple, *HostTC, C.getInputArgs(), Action::OFK_Cuda);
527  }
529  }
530 
531  //
532  // OpenMP
533  //
534  // We need to generate an OpenMP toolchain if the user specified targets with
535  // the -fopenmp-targets option.
536  if (Arg *OpenMPTargets =
537  C.getInputArgs().getLastArg(options::OPT_fopenmp_targets_EQ)) {
538  if (OpenMPTargets->getNumValues()) {
539  // We expect that -fopenmp-targets is always used in conjunction with the
540  // option -fopenmp specifying a valid runtime with offloading support,
541  // i.e. libomp or libiomp.
542  bool HasValidOpenMPRuntime = C.getInputArgs().hasFlag(
543  options::OPT_fopenmp, options::OPT_fopenmp_EQ,
544  options::OPT_fno_openmp, false);
545  if (HasValidOpenMPRuntime) {
547  HasValidOpenMPRuntime =
548  OpenMPKind == OMPRT_OMP || OpenMPKind == OMPRT_IOMP5;
549  }
550 
551  if (HasValidOpenMPRuntime) {
552  llvm::StringMap<const char *> FoundNormalizedTriples;
553  for (const char *Val : OpenMPTargets->getValues()) {
554  llvm::Triple TT(Val);
555  std::string NormalizedName = TT.normalize();
556 
557  // Make sure we don't have a duplicate triple.
558  auto Duplicate = FoundNormalizedTriples.find(NormalizedName);
559  if (Duplicate != FoundNormalizedTriples.end()) {
560  Diag(clang::diag::warn_drv_omp_offload_target_duplicate)
561  << Val << Duplicate->second;
562  continue;
563  }
564 
565  // Store the current triple so that we can check for duplicates in the
566  // following iterations.
567  FoundNormalizedTriples[NormalizedName] = Val;
568 
569  // If the specified target is invalid, emit a diagnostic.
570  if (TT.getArch() == llvm::Triple::UnknownArch)
571  Diag(clang::diag::err_drv_invalid_omp_target) << Val;
572  else {
573  const ToolChain *TC;
574  // CUDA toolchains have to be selected differently. They pair host
575  // and device in their implementation.
576  if (TT.isNVPTX()) {
577  const ToolChain *HostTC =
579  assert(HostTC && "Host toolchain should be always defined.");
580  auto &CudaTC =
581  ToolChains[TT.str() + "/" + HostTC->getTriple().normalize()];
582  if (!CudaTC)
583  CudaTC = llvm::make_unique<toolchains::CudaToolChain>(
584  *this, TT, *HostTC, C.getInputArgs(), Action::OFK_OpenMP);
585  TC = CudaTC.get();
586  } else
587  TC = &getToolChain(C.getInputArgs(), TT);
589  }
590  }
591  } else
592  Diag(clang::diag::err_drv_expecting_fopenmp_with_fopenmp_targets);
593  } else
594  Diag(clang::diag::warn_drv_empty_joined_argument)
595  << OpenMPTargets->getAsString(C.getInputArgs());
596  }
597 
598  //
599  // TODO: Add support for other offloading programming models here.
600  //
601 
602  return;
603 }
604 
606  llvm::PrettyStackTraceString CrashInfo("Compilation construction");
607 
608  // FIXME: Handle environment options which affect driver behavior, somewhere
609  // (client?). GCC_EXEC_PREFIX, LPATH, CC_PRINT_OPTIONS.
610 
611  if (Optional<std::string> CompilerPathValue =
612  llvm::sys::Process::GetEnv("COMPILER_PATH")) {
613  StringRef CompilerPath = *CompilerPathValue;
614  while (!CompilerPath.empty()) {
615  std::pair<StringRef, StringRef> Split =
616  CompilerPath.split(llvm::sys::EnvPathSeparator);
617  PrefixDirs.push_back(Split.first);
618  CompilerPath = Split.second;
619  }
620  }
621 
622  // We look for the driver mode option early, because the mode can affect
623  // how other options are parsed.
624  ParseDriverMode(ClangExecutable, ArgList.slice(1));
625 
626  // FIXME: What are we going to do with -V and -b?
627 
628  // FIXME: This stuff needs to go into the Compilation, not the driver.
629  bool CCCPrintPhases;
630 
631  bool ContainsError;
632  InputArgList Args = ParseArgStrings(ArgList.slice(1), ContainsError);
633 
634  // Silence driver warnings if requested
635  Diags.setIgnoreAllWarnings(Args.hasArg(options::OPT_w));
636 
637  // -no-canonical-prefixes is used very early in main.
638  Args.ClaimAllArgs(options::OPT_no_canonical_prefixes);
639 
640  // Ignore -pipe.
641  Args.ClaimAllArgs(options::OPT_pipe);
642 
643  // Extract -ccc args.
644  //
645  // FIXME: We need to figure out where this behavior should live. Most of it
646  // should be outside in the client; the parts that aren't should have proper
647  // options, either by introducing new ones or by overloading gcc ones like -V
648  // or -b.
649  CCCPrintPhases = Args.hasArg(options::OPT_ccc_print_phases);
650  CCCPrintBindings = Args.hasArg(options::OPT_ccc_print_bindings);
651  if (const Arg *A = Args.getLastArg(options::OPT_ccc_gcc_name))
652  CCCGenericGCCName = A->getValue();
653  CCCUsePCH =
654  Args.hasFlag(options::OPT_ccc_pch_is_pch, options::OPT_ccc_pch_is_pth);
655  GenReproducer = Args.hasFlag(options::OPT_gen_reproducer,
656  options::OPT_fno_crash_diagnostics,
657  !!::getenv("FORCE_CLANG_DIAGNOSTICS_CRASH"));
658  // FIXME: DefaultTargetTriple is used by the target-prefixed calls to as/ld
659  // and getToolChain is const.
660  if (IsCLMode()) {
661  // clang-cl targets MSVC-style Win32.
662  llvm::Triple T(DefaultTargetTriple);
663  T.setOS(llvm::Triple::Win32);
664  T.setVendor(llvm::Triple::PC);
665  T.setEnvironment(llvm::Triple::MSVC);
666  T.setObjectFormat(llvm::Triple::COFF);
667  DefaultTargetTriple = T.str();
668  }
669  if (const Arg *A = Args.getLastArg(options::OPT_target))
670  DefaultTargetTriple = A->getValue();
671  if (const Arg *A = Args.getLastArg(options::OPT_ccc_install_dir))
672  Dir = InstalledDir = A->getValue();
673  for (const Arg *A : Args.filtered(options::OPT_B)) {
674  A->claim();
675  PrefixDirs.push_back(A->getValue(0));
676  }
677  if (const Arg *A = Args.getLastArg(options::OPT__sysroot_EQ))
678  SysRoot = A->getValue();
679  if (const Arg *A = Args.getLastArg(options::OPT__dyld_prefix_EQ))
680  DyldPrefix = A->getValue();
681 
682  if (const Arg *A = Args.getLastArg(options::OPT_resource_dir))
683  ResourceDir = A->getValue();
684 
685  if (const Arg *A = Args.getLastArg(options::OPT_save_temps_EQ)) {
686  SaveTemps = llvm::StringSwitch<SaveTempsMode>(A->getValue())
687  .Case("cwd", SaveTempsCwd)
688  .Case("obj", SaveTempsObj)
689  .Default(SaveTempsCwd);
690  }
691 
692  setLTOMode(Args);
693 
694  // Process -fembed-bitcode= flags.
695  if (Arg *A = Args.getLastArg(options::OPT_fembed_bitcode_EQ)) {
696  StringRef Name = A->getValue();
697  unsigned Model = llvm::StringSwitch<unsigned>(Name)
698  .Case("off", EmbedNone)
699  .Case("all", EmbedBitcode)
700  .Case("bitcode", EmbedBitcode)
701  .Case("marker", EmbedMarker)
702  .Default(~0U);
703  if (Model == ~0U) {
704  Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
705  << Name;
706  } else
707  BitcodeEmbed = static_cast<BitcodeEmbedMode>(Model);
708  }
709 
710  std::unique_ptr<llvm::opt::InputArgList> UArgs =
711  llvm::make_unique<InputArgList>(std::move(Args));
712 
713  // Perform the default argument translations.
714  DerivedArgList *TranslatedArgs = TranslateInputArgs(*UArgs);
715 
716  // Owned by the host.
717  const ToolChain &TC = getToolChain(
718  *UArgs, computeTargetTriple(*this, DefaultTargetTriple, *UArgs));
719 
720  // The compilation takes ownership of Args.
721  Compilation *C = new Compilation(*this, TC, UArgs.release(), TranslatedArgs,
722  ContainsError);
723 
724  if (!HandleImmediateArgs(*C))
725  return C;
726 
727  // Construct the list of inputs.
728  InputList Inputs;
729  BuildInputs(C->getDefaultToolChain(), *TranslatedArgs, Inputs);
730 
731  // Populate the tool chains for the offloading devices, if any.
733 
734  // Construct the list of abstract actions to perform for this compilation. On
735  // MachO targets this uses the driver-driver and universal actions.
736  if (TC.getTriple().isOSBinFormatMachO())
737  BuildUniversalActions(*C, C->getDefaultToolChain(), Inputs);
738  else
739  BuildActions(*C, C->getArgs(), Inputs, C->getActions());
740 
741  if (CCCPrintPhases) {
742  PrintActions(*C);
743  return C;
744  }
745 
746  BuildJobs(*C);
747 
748  return C;
749 }
750 
751 static void printArgList(raw_ostream &OS, const llvm::opt::ArgList &Args) {
752  llvm::opt::ArgStringList ASL;
753  for (const auto *A : Args)
754  A->render(Args, ASL);
755 
756  for (auto I = ASL.begin(), E = ASL.end(); I != E; ++I) {
757  if (I != ASL.begin())
758  OS << ' ';
759  Command::printArg(OS, *I, true);
760  }
761  OS << '\n';
762 }
763 
764 bool Driver::getCrashDiagnosticFile(StringRef ReproCrashFilename,
765  SmallString<128> &CrashDiagDir) {
766  using namespace llvm::sys;
767  assert(llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() &&
768  "Only knows about .crash files on Darwin");
769 
770  // The .crash file can be found on at ~/Library/Logs/DiagnosticReports/
771  // (or /Library/Logs/DiagnosticReports for root) and has the filename pattern
772  // clang-<VERSION>_<YYYY-MM-DD-HHMMSS>_<hostname>.crash.
773  path::home_directory(CrashDiagDir);
774  if (CrashDiagDir.startswith("/var/root"))
775  CrashDiagDir = "/";
776  path::append(CrashDiagDir, "Library/Logs/DiagnosticReports");
777  int PID =
778 #if LLVM_ON_UNIX
779  getpid();
780 #else
781  0;
782 #endif
783  std::error_code EC;
784  fs::file_status FileStatus;
785  TimePoint<> LastAccessTime;
786  SmallString<128> CrashFilePath;
787  // Lookup the .crash files and get the one generated by a subprocess spawned
788  // by this driver invocation.
789  for (fs::directory_iterator File(CrashDiagDir, EC), FileEnd;
790  File != FileEnd && !EC; File.increment(EC)) {
791  StringRef FileName = path::filename(File->path());
792  if (!FileName.startswith(Name))
793  continue;
794  if (fs::status(File->path(), FileStatus))
795  continue;
796  llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> CrashFile =
797  llvm::MemoryBuffer::getFile(File->path());
798  if (!CrashFile)
799  continue;
800  // The first line should start with "Process:", otherwise this isn't a real
801  // .crash file.
802  StringRef Data = CrashFile.get()->getBuffer();
803  if (!Data.startswith("Process:"))
804  continue;
805  // Parse parent process pid line, e.g: "Parent Process: clang-4.0 [79141]"
806  size_t ParentProcPos = Data.find("Parent Process:");
807  if (ParentProcPos == StringRef::npos)
808  continue;
809  size_t LineEnd = Data.find_first_of("\n", ParentProcPos);
810  if (LineEnd == StringRef::npos)
811  continue;
812  StringRef ParentProcess = Data.slice(ParentProcPos+15, LineEnd).trim();
813  int OpenBracket = -1, CloseBracket = -1;
814  for (size_t i = 0, e = ParentProcess.size(); i < e; ++i) {
815  if (ParentProcess[i] == '[')
816  OpenBracket = i;
817  if (ParentProcess[i] == ']')
818  CloseBracket = i;
819  }
820  // Extract the parent process PID from the .crash file and check whether
821  // it matches this driver invocation pid.
822  int CrashPID;
823  if (OpenBracket < 0 || CloseBracket < 0 ||
824  ParentProcess.slice(OpenBracket + 1, CloseBracket)
825  .getAsInteger(10, CrashPID) || CrashPID != PID) {
826  continue;
827  }
828 
829  // Found a .crash file matching the driver pid. To avoid getting an older
830  // and misleading crash file, continue looking for the most recent.
831  // FIXME: the driver can dispatch multiple cc1 invocations, leading to
832  // multiple crashes poiting to the same parent process. Since the driver
833  // does not collect pid information for the dispatched invocation there's
834  // currently no way to distinguish among them.
835  const auto FileAccessTime = FileStatus.getLastModificationTime();
836  if (FileAccessTime > LastAccessTime) {
837  CrashFilePath.assign(File->path());
838  LastAccessTime = FileAccessTime;
839  }
840  }
841 
842  // If found, copy it over to the location of other reproducer files.
843  if (!CrashFilePath.empty()) {
844  EC = fs::copy_file(CrashFilePath, ReproCrashFilename);
845  if (EC)
846  return false;
847  return true;
848  }
849 
850  return false;
851 }
852 
853 // When clang crashes, produce diagnostic information including the fully
854 // preprocessed source file(s). Request that the developer attach the
855 // diagnostic information to a bug report.
857  const Command &FailingCommand) {
858  if (C.getArgs().hasArg(options::OPT_fno_crash_diagnostics))
859  return;
860 
861  // Don't try to generate diagnostics for link or dsymutil jobs.
862  if (FailingCommand.getCreator().isLinkJob() ||
863  FailingCommand.getCreator().isDsymutilJob())
864  return;
865 
866  // Print the version of the compiler.
867  PrintVersion(C, llvm::errs());
868 
869  Diag(clang::diag::note_drv_command_failed_diag_msg)
870  << "PLEASE submit a bug report to " BUG_REPORT_URL " and include the "
871  "crash backtrace, preprocessed source, and associated run script.";
872 
873  // Suppress driver output and emit preprocessor output to temp file.
874  Mode = CPPMode;
875  CCGenDiagnostics = true;
876 
877  // Save the original job command(s).
878  Command Cmd = FailingCommand;
879 
880  // Keep track of whether we produce any errors while trying to produce
881  // preprocessed sources.
882  DiagnosticErrorTrap Trap(Diags);
883 
884  // Suppress tool output.
886 
887  // Construct the list of inputs.
888  InputList Inputs;
889  BuildInputs(C.getDefaultToolChain(), C.getArgs(), Inputs);
890 
891  for (InputList::iterator it = Inputs.begin(), ie = Inputs.end(); it != ie;) {
892  bool IgnoreInput = false;
893 
894  // Ignore input from stdin or any inputs that cannot be preprocessed.
895  // Check type first as not all linker inputs have a value.
896  if (types::getPreprocessedType(it->first) == types::TY_INVALID) {
897  IgnoreInput = true;
898  } else if (!strcmp(it->second->getValue(), "-")) {
899  Diag(clang::diag::note_drv_command_failed_diag_msg)
900  << "Error generating preprocessed source(s) - "
901  "ignoring input from stdin.";
902  IgnoreInput = true;
903  }
904 
905  if (IgnoreInput) {
906  it = Inputs.erase(it);
907  ie = Inputs.end();
908  } else {
909  ++it;
910  }
911  }
912 
913  if (Inputs.empty()) {
914  Diag(clang::diag::note_drv_command_failed_diag_msg)
915  << "Error generating preprocessed source(s) - "
916  "no preprocessable inputs.";
917  return;
918  }
919 
920  // Don't attempt to generate preprocessed files if multiple -arch options are
921  // used, unless they're all duplicates.
922  llvm::StringSet<> ArchNames;
923  for (const Arg *A : C.getArgs()) {
924  if (A->getOption().matches(options::OPT_arch)) {
925  StringRef ArchName = A->getValue();
926  ArchNames.insert(ArchName);
927  }
928  }
929  if (ArchNames.size() > 1) {
930  Diag(clang::diag::note_drv_command_failed_diag_msg)
931  << "Error generating preprocessed source(s) - cannot generate "
932  "preprocessed source with multiple -arch options.";
933  return;
934  }
935 
936  // Construct the list of abstract actions to perform for this compilation. On
937  // Darwin OSes this uses the driver-driver and builds universal actions.
938  const ToolChain &TC = C.getDefaultToolChain();
939  if (TC.getTriple().isOSBinFormatMachO())
940  BuildUniversalActions(C, TC, Inputs);
941  else
942  BuildActions(C, C.getArgs(), Inputs, C.getActions());
943 
944  BuildJobs(C);
945 
946  // If there were errors building the compilation, quit now.
947  if (Trap.hasErrorOccurred()) {
948  Diag(clang::diag::note_drv_command_failed_diag_msg)
949  << "Error generating preprocessed source(s).";
950  return;
951  }
952 
953  // Generate preprocessed output.
955  C.ExecuteJobs(C.getJobs(), FailingCommands);
956 
957  // If any of the preprocessing commands failed, clean up and exit.
958  if (!FailingCommands.empty()) {
959  if (!isSaveTempsEnabled())
960  C.CleanupFileList(C.getTempFiles(), true);
961 
962  Diag(clang::diag::note_drv_command_failed_diag_msg)
963  << "Error generating preprocessed source(s).";
964  return;
965  }
966 
967  const ArgStringList &TempFiles = C.getTempFiles();
968  if (TempFiles.empty()) {
969  Diag(clang::diag::note_drv_command_failed_diag_msg)
970  << "Error generating preprocessed source(s).";
971  return;
972  }
973 
974  Diag(clang::diag::note_drv_command_failed_diag_msg)
975  << "\n********************\n\n"
976  "PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\n"
977  "Preprocessed source(s) and associated run script(s) are located at:";
978 
979  SmallString<128> VFS;
980  SmallString<128> ReproCrashFilename;
981  for (const char *TempFile : TempFiles) {
982  Diag(clang::diag::note_drv_command_failed_diag_msg) << TempFile;
983  if (ReproCrashFilename.empty()) {
984  ReproCrashFilename = TempFile;
985  llvm::sys::path::replace_extension(ReproCrashFilename, ".crash");
986  }
987  if (StringRef(TempFile).endswith(".cache")) {
988  // In some cases (modules) we'll dump extra data to help with reproducing
989  // the crash into a directory next to the output.
990  VFS = llvm::sys::path::filename(TempFile);
991  llvm::sys::path::append(VFS, "vfs", "vfs.yaml");
992  }
993  }
994 
995  // Assume associated files are based off of the first temporary file.
996  CrashReportInfo CrashInfo(TempFiles[0], VFS);
997 
998  std::string Script = CrashInfo.Filename.rsplit('.').first.str() + ".sh";
999  std::error_code EC;
1000  llvm::raw_fd_ostream ScriptOS(Script, EC, llvm::sys::fs::F_Excl);
1001  if (EC) {
1002  Diag(clang::diag::note_drv_command_failed_diag_msg)
1003  << "Error generating run script: " + Script + " " + EC.message();
1004  } else {
1005  ScriptOS << "# Crash reproducer for " << getClangFullVersion() << "\n"
1006  << "# Driver args: ";
1007  printArgList(ScriptOS, C.getInputArgs());
1008  ScriptOS << "# Original command: ";
1009  Cmd.Print(ScriptOS, "\n", /*Quote=*/true);
1010  Cmd.Print(ScriptOS, "\n", /*Quote=*/true, &CrashInfo);
1011  Diag(clang::diag::note_drv_command_failed_diag_msg) << Script;
1012  }
1013 
1014  // On darwin, provide information about the .crash diagnostic report.
1015  if (llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin()) {
1016  SmallString<128> CrashDiagDir;
1017  if (getCrashDiagnosticFile(ReproCrashFilename, CrashDiagDir)) {
1018  Diag(clang::diag::note_drv_command_failed_diag_msg)
1019  << ReproCrashFilename.str();
1020  } else { // Suggest a directory for the user to look for .crash files.
1021  llvm::sys::path::append(CrashDiagDir, Name);
1022  CrashDiagDir += "_<YYYY-MM-DD-HHMMSS>_<hostname>.crash";
1023  Diag(clang::diag::note_drv_command_failed_diag_msg)
1024  << "Crash backtrace is located in";
1025  Diag(clang::diag::note_drv_command_failed_diag_msg)
1026  << CrashDiagDir.str();
1027  Diag(clang::diag::note_drv_command_failed_diag_msg)
1028  << "(choose the .crash file that corresponds to your crash)";
1029  }
1030  }
1031 
1032  for (const auto &A : C.getArgs().filtered(options::OPT_frewrite_map_file,
1033  options::OPT_frewrite_map_file_EQ))
1034  Diag(clang::diag::note_drv_command_failed_diag_msg) << A->getValue();
1035 
1036  Diag(clang::diag::note_drv_command_failed_diag_msg)
1037  << "\n\n********************";
1038 }
1039 
1040 void Driver::setUpResponseFiles(Compilation &C, Command &Cmd) {
1041  // Since commandLineFitsWithinSystemLimits() may underestimate system's capacity
1042  // if the tool does not support response files, there is a chance/ that things
1043  // will just work without a response file, so we silently just skip it.
1045  llvm::sys::commandLineFitsWithinSystemLimits(Cmd.getExecutable(), Cmd.getArguments()))
1046  return;
1047 
1048  std::string TmpName = GetTemporaryPath("response", "txt");
1049  Cmd.setResponseFile(C.addTempFile(C.getArgs().MakeArgString(TmpName)));
1050 }
1051 
1053  Compilation &C,
1054  SmallVectorImpl<std::pair<int, const Command *>> &FailingCommands) {
1055  // Just print if -### was present.
1056  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
1057  C.getJobs().Print(llvm::errs(), "\n", true);
1058  return 0;
1059  }
1060 
1061  // If there were errors building the compilation, quit now.
1062  if (Diags.hasErrorOccurred())
1063  return 1;
1064 
1065  // Set up response file names for each command, if necessary
1066  for (auto &Job : C.getJobs())
1067  setUpResponseFiles(C, Job);
1068 
1069  C.ExecuteJobs(C.getJobs(), FailingCommands);
1070 
1071  // Remove temp files.
1073 
1074  // If the command succeeded, we are done.
1075  if (FailingCommands.empty())
1076  return 0;
1077 
1078  // Otherwise, remove result files and print extra information about abnormal
1079  // failures.
1080  for (const auto &CmdPair : FailingCommands) {
1081  int Res = CmdPair.first;
1082  const Command *FailingCommand = CmdPair.second;
1083 
1084  // Remove result files if we're not saving temps.
1085  if (!isSaveTempsEnabled()) {
1086  const JobAction *JA = cast<JobAction>(&FailingCommand->getSource());
1087  C.CleanupFileMap(C.getResultFiles(), JA, true);
1088 
1089  // Failure result files are valid unless we crashed.
1090  if (Res < 0)
1091  C.CleanupFileMap(C.getFailureResultFiles(), JA, true);
1092  }
1093 
1094  // Print extra information about abnormal failures, if possible.
1095  //
1096  // This is ad-hoc, but we don't want to be excessively noisy. If the result
1097  // status was 1, assume the command failed normally. In particular, if it
1098  // was the compiler then assume it gave a reasonable error code. Failures
1099  // in other tools are less common, and they generally have worse
1100  // diagnostics, so always print the diagnostic there.
1101  const Tool &FailingTool = FailingCommand->getCreator();
1102 
1103  if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) {
1104  // FIXME: See FIXME above regarding result code interpretation.
1105  if (Res < 0)
1106  Diag(clang::diag::err_drv_command_signalled)
1107  << FailingTool.getShortName();
1108  else
1109  Diag(clang::diag::err_drv_command_failed) << FailingTool.getShortName()
1110  << Res;
1111  }
1112  }
1113  return 0;
1114 }
1115 
1116 void Driver::PrintHelp(bool ShowHidden) const {
1117  unsigned IncludedFlagsBitmask;
1118  unsigned ExcludedFlagsBitmask;
1119  std::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
1120  getIncludeExcludeOptionFlagMasks();
1121 
1122  ExcludedFlagsBitmask |= options::NoDriverOption;
1123  if (!ShowHidden)
1124  ExcludedFlagsBitmask |= HelpHidden;
1125 
1126  getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
1127  IncludedFlagsBitmask, ExcludedFlagsBitmask,
1128  /*ShowAllAliases=*/false);
1129 }
1130 
1131 void Driver::PrintVersion(const Compilation &C, raw_ostream &OS) const {
1132  // FIXME: The following handlers should use a callback mechanism, we don't
1133  // know what the client would like to do.
1134  OS << getClangFullVersion() << '\n';
1135  const ToolChain &TC = C.getDefaultToolChain();
1136  OS << "Target: " << TC.getTripleString() << '\n';
1137 
1138  // Print the threading model.
1139  if (Arg *A = C.getArgs().getLastArg(options::OPT_mthread_model)) {
1140  // Don't print if the ToolChain would have barfed on it already
1141  if (TC.isThreadModelSupported(A->getValue()))
1142  OS << "Thread model: " << A->getValue();
1143  } else
1144  OS << "Thread model: " << TC.getThreadModel();
1145  OS << '\n';
1146 
1147  // Print out the install directory.
1148  OS << "InstalledDir: " << InstalledDir << '\n';
1149 }
1150 
1151 /// PrintDiagnosticCategories - Implement the --print-diagnostic-categories
1152 /// option.
1153 static void PrintDiagnosticCategories(raw_ostream &OS) {
1154  // Skip the empty category.
1155  for (unsigned i = 1, max = DiagnosticIDs::getNumberOfCategories(); i != max;
1156  ++i)
1157  OS << i << ',' << DiagnosticIDs::getCategoryNameFromID(i) << '\n';
1158 }
1159 
1160 void Driver::handleAutocompletions(StringRef PassedFlags) const {
1161  // Print out all options that start with a given argument. This is used for
1162  // shell autocompletion.
1163  std::vector<std::string> SuggestedCompletions;
1164 
1165  unsigned short DisableFlags =
1167  // We want to show cc1-only options only when clang is invoked as "clang
1168  // -cc1". When clang is invoked as "clang -cc1", we add "#" to the beginning
1169  // of an --autocomplete option so that the clang driver can distinguish
1170  // whether it is requested to show cc1-only options or not.
1171  if (PassedFlags.size() > 0 && PassedFlags[0] == '#') {
1172  DisableFlags &= ~options::NoDriverOption;
1173  PassedFlags = PassedFlags.substr(1);
1174  }
1175 
1176  if (PassedFlags.find(',') == StringRef::npos) {
1177  // If the flag is in the form of "--autocomplete=-foo",
1178  // we were requested to print out all option names that start with "-foo".
1179  // For example, "--autocomplete=-fsyn" is expanded to "-fsyntax-only".
1180  SuggestedCompletions = Opts->findByPrefix(PassedFlags, DisableFlags);
1181 
1182  // We have to query the -W flags manually as they're not in the OptTable.
1183  // TODO: Find a good way to add them to OptTable instead and them remove
1184  // this code.
1185  for (StringRef S : DiagnosticIDs::getDiagnosticFlags())
1186  if (S.startswith(PassedFlags))
1187  SuggestedCompletions.push_back(S);
1188  } else {
1189  // If the flag is in the form of "--autocomplete=foo,bar", we were
1190  // requested to print out all option values for "-foo" that start with
1191  // "bar". For example,
1192  // "--autocomplete=-stdlib=,l" is expanded to "libc++" and "libstdc++".
1193  StringRef Option, Arg;
1194  std::tie(Option, Arg) = PassedFlags.split(',');
1195  SuggestedCompletions = Opts->suggestValueCompletions(Option, Arg);
1196  }
1197 
1198  // Sort the autocomplete candidates so that shells print them out in a
1199  // deterministic order. We could sort in any way, but we chose
1200  // case-insensitive sorting for consistency with the -help option
1201  // which prints out options in the case-insensitive alphabetical order.
1202  std::sort(SuggestedCompletions.begin(), SuggestedCompletions.end(),
1203  [](StringRef A, StringRef B) { return A.compare_lower(B) < 0; });
1204 
1205  llvm::outs() << llvm::join(SuggestedCompletions, "\n") << '\n';
1206 }
1207 
1209  // The order these options are handled in gcc is all over the place, but we
1210  // don't expect inconsistencies w.r.t. that to matter in practice.
1211 
1212  if (C.getArgs().hasArg(options::OPT_dumpmachine)) {
1213  llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n';
1214  return false;
1215  }
1216 
1217  if (C.getArgs().hasArg(options::OPT_dumpversion)) {
1218  // Since -dumpversion is only implemented for pedantic GCC compatibility, we
1219  // return an answer which matches our definition of __VERSION__.
1220  //
1221  // If we want to return a more correct answer some day, then we should
1222  // introduce a non-pedantically GCC compatible mode to Clang in which we
1223  // provide sensible definitions for -dumpversion, __VERSION__, etc.
1224  llvm::outs() << "4.2.1\n";
1225  return false;
1226  }
1227 
1228  if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) {
1229  PrintDiagnosticCategories(llvm::outs());
1230  return false;
1231  }
1232 
1233  if (C.getArgs().hasArg(options::OPT_help) ||
1234  C.getArgs().hasArg(options::OPT__help_hidden)) {
1235  PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
1236  return false;
1237  }
1238 
1239  if (C.getArgs().hasArg(options::OPT__version)) {
1240  // Follow gcc behavior and use stdout for --version and stderr for -v.
1241  PrintVersion(C, llvm::outs());
1242  return false;
1243  }
1244 
1245  if (C.getArgs().hasArg(options::OPT_v) ||
1246  C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
1247  PrintVersion(C, llvm::errs());
1248  SuppressMissingInputWarning = true;
1249  }
1250 
1251  const ToolChain &TC = C.getDefaultToolChain();
1252 
1253  if (C.getArgs().hasArg(options::OPT_v))
1254  TC.printVerboseInfo(llvm::errs());
1255 
1256  if (C.getArgs().hasArg(options::OPT_print_resource_dir)) {
1257  llvm::outs() << ResourceDir << '\n';
1258  return false;
1259  }
1260 
1261  if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
1262  llvm::outs() << "programs: =";
1263  bool separator = false;
1264  for (const std::string &Path : TC.getProgramPaths()) {
1265  if (separator)
1266  llvm::outs() << ':';
1267  llvm::outs() << Path;
1268  separator = true;
1269  }
1270  llvm::outs() << "\n";
1271  llvm::outs() << "libraries: =" << ResourceDir;
1272 
1273  StringRef sysroot = C.getSysRoot();
1274 
1275  for (const std::string &Path : TC.getFilePaths()) {
1276  // Always print a separator. ResourceDir was the first item shown.
1277  llvm::outs() << ':';
1278  // Interpretation of leading '=' is needed only for NetBSD.
1279  if (Path[0] == '=')
1280  llvm::outs() << sysroot << Path.substr(1);
1281  else
1282  llvm::outs() << Path;
1283  }
1284  llvm::outs() << "\n";
1285  return false;
1286  }
1287 
1288  // FIXME: The following handlers should use a callback mechanism, we don't
1289  // know what the client would like to do.
1290  if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
1291  llvm::outs() << GetFilePath(A->getValue(), TC) << "\n";
1292  return false;
1293  }
1294 
1295  if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
1296  llvm::outs() << GetProgramPath(A->getValue(), TC) << "\n";
1297  return false;
1298  }
1299 
1300  if (Arg *A = C.getArgs().getLastArg(options::OPT_autocomplete)) {
1301  StringRef PassedFlags = A->getValue();
1302  handleAutocompletions(PassedFlags);
1303  return false;
1304  }
1305 
1306  if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
1308  const llvm::Triple Triple(TC.ComputeEffectiveClangTriple(C.getArgs()));
1309  RegisterEffectiveTriple TripleRAII(TC, Triple);
1310  switch (RLT) {
1312  llvm::outs() << TC.getCompilerRT(C.getArgs(), "builtins") << "\n";
1313  break;
1314  case ToolChain::RLT_Libgcc:
1315  llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
1316  break;
1317  }
1318  return false;
1319  }
1320 
1321  if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
1322  for (const Multilib &Multilib : TC.getMultilibs())
1323  llvm::outs() << Multilib << "\n";
1324  return false;
1325  }
1326 
1327  if (C.getArgs().hasArg(options::OPT_print_multi_directory)) {
1328  for (const Multilib &Multilib : TC.getMultilibs()) {
1329  if (Multilib.gccSuffix().empty())
1330  llvm::outs() << ".\n";
1331  else {
1332  StringRef Suffix(Multilib.gccSuffix());
1333  assert(Suffix.front() == '/');
1334  llvm::outs() << Suffix.substr(1) << "\n";
1335  }
1336  }
1337  return false;
1338  }
1339  return true;
1340 }
1341 
1342 // Display an action graph human-readably. Action A is the "sink" node
1343 // and latest-occuring action. Traversal is in pre-order, visiting the
1344 // inputs to each action before printing the action itself.
1345 static unsigned PrintActions1(const Compilation &C, Action *A,
1346  std::map<Action *, unsigned> &Ids) {
1347  if (Ids.count(A)) // A was already visited.
1348  return Ids[A];
1349 
1350  std::string str;
1351  llvm::raw_string_ostream os(str);
1352 
1353  os << Action::getClassName(A->getKind()) << ", ";
1354  if (InputAction *IA = dyn_cast<InputAction>(A)) {
1355  os << "\"" << IA->getInputArg().getValue() << "\"";
1356  } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
1357  os << '"' << BIA->getArchName() << '"' << ", {"
1358  << PrintActions1(C, *BIA->input_begin(), Ids) << "}";
1359  } else if (OffloadAction *OA = dyn_cast<OffloadAction>(A)) {
1360  bool IsFirst = true;
1361  OA->doOnEachDependence(
1362  [&](Action *A, const ToolChain *TC, const char *BoundArch) {
1363  // E.g. for two CUDA device dependences whose bound arch is sm_20 and
1364  // sm_35 this will generate:
1365  // "cuda-device" (nvptx64-nvidia-cuda:sm_20) {#ID}, "cuda-device"
1366  // (nvptx64-nvidia-cuda:sm_35) {#ID}
1367  if (!IsFirst)
1368  os << ", ";
1369  os << '"';
1370  if (TC)
1371  os << A->getOffloadingKindPrefix();
1372  else
1373  os << "host";
1374  os << " (";
1375  os << TC->getTriple().normalize();
1376 
1377  if (BoundArch)
1378  os << ":" << BoundArch;
1379  os << ")";
1380  os << '"';
1381  os << " {" << PrintActions1(C, A, Ids) << "}";
1382  IsFirst = false;
1383  });
1384  } else {
1385  const ActionList *AL = &A->getInputs();
1386 
1387  if (AL->size()) {
1388  const char *Prefix = "{";
1389  for (Action *PreRequisite : *AL) {
1390  os << Prefix << PrintActions1(C, PreRequisite, Ids);
1391  Prefix = ", ";
1392  }
1393  os << "}";
1394  } else
1395  os << "{}";
1396  }
1397 
1398  // Append offload info for all options other than the offloading action
1399  // itself (e.g. (cuda-device, sm_20) or (cuda-host)).
1400  std::string offload_str;
1401  llvm::raw_string_ostream offload_os(offload_str);
1402  if (!isa<OffloadAction>(A)) {
1403  auto S = A->getOffloadingKindPrefix();
1404  if (!S.empty()) {
1405  offload_os << ", (" << S;
1406  if (A->getOffloadingArch())
1407  offload_os << ", " << A->getOffloadingArch();
1408  offload_os << ")";
1409  }
1410  }
1411 
1412  unsigned Id = Ids.size();
1413  Ids[A] = Id;
1414  llvm::errs() << Id << ": " << os.str() << ", "
1415  << types::getTypeName(A->getType()) << offload_os.str() << "\n";
1416 
1417  return Id;
1418 }
1419 
1420 // Print the action graphs in a compilation C.
1421 // For example "clang -c file1.c file2.c" is composed of two subgraphs.
1422 void Driver::PrintActions(const Compilation &C) const {
1423  std::map<Action *, unsigned> Ids;
1424  for (Action *A : C.getActions())
1425  PrintActions1(C, A, Ids);
1426 }
1427 
1428 /// \brief Check whether the given input tree contains any compilation or
1429 /// assembly actions.
1431  if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A) ||
1432  isa<AssembleJobAction>(A))
1433  return true;
1434 
1435  for (const Action *Input : A->inputs())
1437  return true;
1438 
1439  return false;
1440 }
1441 
1443  const InputList &BAInputs) const {
1444  DerivedArgList &Args = C.getArgs();
1445  ActionList &Actions = C.getActions();
1446  llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
1447  // Collect the list of architectures. Duplicates are allowed, but should only
1448  // be handled once (in the order seen).
1449  llvm::StringSet<> ArchNames;
1451  for (Arg *A : Args) {
1452  if (A->getOption().matches(options::OPT_arch)) {
1453  // Validate the option here; we don't save the type here because its
1454  // particular spelling may participate in other driver choices.
1455  llvm::Triple::ArchType Arch =
1457  if (Arch == llvm::Triple::UnknownArch) {
1458  Diag(clang::diag::err_drv_invalid_arch_name) << A->getAsString(Args);
1459  continue;
1460  }
1461 
1462  A->claim();
1463  if (ArchNames.insert(A->getValue()).second)
1464  Archs.push_back(A->getValue());
1465  }
1466  }
1467 
1468  // When there is no explicit arch for this platform, make sure we still bind
1469  // the architecture (to the default) so that -Xarch_ is handled correctly.
1470  if (!Archs.size())
1471  Archs.push_back(Args.MakeArgString(TC.getDefaultUniversalArchName()));
1472 
1473  ActionList SingleActions;
1474  BuildActions(C, Args, BAInputs, SingleActions);
1475 
1476  // Add in arch bindings for every top level action, as well as lipo and
1477  // dsymutil steps if needed.
1478  for (Action* Act : SingleActions) {
1479  // Make sure we can lipo this kind of output. If not (and it is an actual
1480  // output) then we disallow, since we can't create an output file with the
1481  // right name without overwriting it. We could remove this oddity by just
1482  // changing the output names to include the arch, which would also fix
1483  // -save-temps. Compatibility wins for now.
1484 
1485  if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
1486  Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
1487  << types::getTypeName(Act->getType());
1488 
1489  ActionList Inputs;
1490  for (unsigned i = 0, e = Archs.size(); i != e; ++i)
1491  Inputs.push_back(C.MakeAction<BindArchAction>(Act, Archs[i]));
1492 
1493  // Lipo if necessary, we do it this way because we need to set the arch flag
1494  // so that -Xarch_ gets overwritten.
1495  if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
1496  Actions.append(Inputs.begin(), Inputs.end());
1497  else
1498  Actions.push_back(C.MakeAction<LipoJobAction>(Inputs, Act->getType()));
1499 
1500  // Handle debug info queries.
1501  Arg *A = Args.getLastArg(options::OPT_g_Group);
1502  if (A && !A->getOption().matches(options::OPT_g0) &&
1503  !A->getOption().matches(options::OPT_gstabs) &&
1504  ContainsCompileOrAssembleAction(Actions.back())) {
1505 
1506  // Add a 'dsymutil' step if necessary, when debug info is enabled and we
1507  // have a compile input. We need to run 'dsymutil' ourselves in such cases
1508  // because the debug info will refer to a temporary object file which
1509  // will be removed at the end of the compilation process.
1510  if (Act->getType() == types::TY_Image) {
1511  ActionList Inputs;
1512  Inputs.push_back(Actions.back());
1513  Actions.pop_back();
1514  Actions.push_back(
1515  C.MakeAction<DsymutilJobAction>(Inputs, types::TY_dSYM));
1516  }
1517 
1518  // Verify the debug info output.
1519  if (Args.hasArg(options::OPT_verify_debug_info)) {
1520  Action* LastAction = Actions.back();
1521  Actions.pop_back();
1522  Actions.push_back(C.MakeAction<VerifyDebugInfoJobAction>(
1523  LastAction, types::TY_Nothing));
1524  }
1525  }
1526  }
1527 }
1528 
1529 /// \brief Check that the file referenced by Value exists. If it doesn't,
1530 /// issue a diagnostic and return false.
1531 static bool DiagnoseInputExistence(const Driver &D, const DerivedArgList &Args,
1532  StringRef Value, types::ID Ty) {
1533  if (!D.getCheckInputsExist())
1534  return true;
1535 
1536  // stdin always exists.
1537  if (Value == "-")
1538  return true;
1539 
1540  SmallString<64> Path(Value);
1541  if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory)) {
1542  if (!llvm::sys::path::is_absolute(Path)) {
1543  SmallString<64> Directory(WorkDir->getValue());
1544  llvm::sys::path::append(Directory, Value);
1545  Path.assign(Directory);
1546  }
1547  }
1548 
1549  if (llvm::sys::fs::exists(Twine(Path)))
1550  return true;
1551 
1552  if (D.IsCLMode()) {
1553  if (!llvm::sys::path::is_absolute(Twine(Path)) &&
1554  llvm::sys::Process::FindInEnvPath("LIB", Value))
1555  return true;
1556 
1557  if (Args.hasArg(options::OPT__SLASH_link) && Ty == types::TY_Object) {
1558  // Arguments to the /link flag might cause the linker to search for object
1559  // and library files in paths we don't know about. Don't error in such
1560  // cases.
1561  return true;
1562  }
1563  }
1564 
1565  D.Diag(clang::diag::err_drv_no_such_file) << Path;
1566  return false;
1567 }
1568 
1569 // Construct a the list of inputs and their types.
1570 void Driver::BuildInputs(const ToolChain &TC, DerivedArgList &Args,
1571  InputList &Inputs) const {
1572  // Track the current user specified (-x) input. We also explicitly track the
1573  // argument used to set the type; we only want to claim the type when we
1574  // actually use it, so we warn about unused -x arguments.
1575  types::ID InputType = types::TY_Nothing;
1576  Arg *InputTypeArg = nullptr;
1577 
1578  // The last /TC or /TP option sets the input type to C or C++ globally.
1579  if (Arg *TCTP = Args.getLastArgNoClaim(options::OPT__SLASH_TC,
1580  options::OPT__SLASH_TP)) {
1581  InputTypeArg = TCTP;
1582  InputType = TCTP->getOption().matches(options::OPT__SLASH_TC)
1583  ? types::TY_C
1584  : types::TY_CXX;
1585 
1586  Arg *Previous = nullptr;
1587  bool ShowNote = false;
1588  for (Arg *A : Args.filtered(options::OPT__SLASH_TC, options::OPT__SLASH_TP)) {
1589  if (Previous) {
1590  Diag(clang::diag::warn_drv_overriding_flag_option)
1591  << Previous->getSpelling() << A->getSpelling();
1592  ShowNote = true;
1593  }
1594  Previous = A;
1595  }
1596  if (ShowNote)
1597  Diag(clang::diag::note_drv_t_option_is_global);
1598 
1599  // No driver mode exposes -x and /TC or /TP; we don't support mixing them.
1600  assert(!Args.hasArg(options::OPT_x) && "-x and /TC or /TP is not allowed");
1601  }
1602 
1603  for (Arg *A : Args) {
1604  if (A->getOption().getKind() == Option::InputClass) {
1605  const char *Value = A->getValue();
1607 
1608  // Infer the input type if necessary.
1609  if (InputType == types::TY_Nothing) {
1610  // If there was an explicit arg for this, claim it.
1611  if (InputTypeArg)
1612  InputTypeArg->claim();
1613 
1614  // stdin must be handled specially.
1615  if (memcmp(Value, "-", 2) == 0) {
1616  // If running with -E, treat as a C input (this changes the builtin
1617  // macros, for example). This may be overridden by -ObjC below.
1618  //
1619  // Otherwise emit an error but still use a valid type to avoid
1620  // spurious errors (e.g., no inputs).
1621  if (!Args.hasArgNoClaim(options::OPT_E) && !CCCIsCPP())
1622  Diag(IsCLMode() ? clang::diag::err_drv_unknown_stdin_type_clang_cl
1623  : clang::diag::err_drv_unknown_stdin_type);
1624  Ty = types::TY_C;
1625  } else {
1626  // Otherwise lookup by extension.
1627  // Fallback is C if invoked as C preprocessor or Object otherwise.
1628  // We use a host hook here because Darwin at least has its own
1629  // idea of what .s is.
1630  if (const char *Ext = strrchr(Value, '.'))
1631  Ty = TC.LookupTypeForExtension(Ext + 1);
1632 
1633  if (Ty == types::TY_INVALID) {
1634  if (CCCIsCPP())
1635  Ty = types::TY_C;
1636  else
1637  Ty = types::TY_Object;
1638  }
1639 
1640  // If the driver is invoked as C++ compiler (like clang++ or c++) it
1641  // should autodetect some input files as C++ for g++ compatibility.
1642  if (CCCIsCXX()) {
1643  types::ID OldTy = Ty;
1645 
1646  if (Ty != OldTy)
1647  Diag(clang::diag::warn_drv_treating_input_as_cxx)
1648  << getTypeName(OldTy) << getTypeName(Ty);
1649  }
1650  }
1651 
1652  // -ObjC and -ObjC++ override the default language, but only for "source
1653  // files". We just treat everything that isn't a linker input as a
1654  // source file.
1655  //
1656  // FIXME: Clean this up if we move the phase sequence into the type.
1657  if (Ty != types::TY_Object) {
1658  if (Args.hasArg(options::OPT_ObjC))
1659  Ty = types::TY_ObjC;
1660  else if (Args.hasArg(options::OPT_ObjCXX))
1661  Ty = types::TY_ObjCXX;
1662  }
1663  } else {
1664  assert(InputTypeArg && "InputType set w/o InputTypeArg");
1665  if (!InputTypeArg->getOption().matches(options::OPT_x)) {
1666  // If emulating cl.exe, make sure that /TC and /TP don't affect input
1667  // object files.
1668  const char *Ext = strrchr(Value, '.');
1669  if (Ext && TC.LookupTypeForExtension(Ext + 1) == types::TY_Object)
1670  Ty = types::TY_Object;
1671  }
1672  if (Ty == types::TY_INVALID) {
1673  Ty = InputType;
1674  InputTypeArg->claim();
1675  }
1676  }
1677 
1678  if (DiagnoseInputExistence(*this, Args, Value, Ty))
1679  Inputs.push_back(std::make_pair(Ty, A));
1680 
1681  } else if (A->getOption().matches(options::OPT__SLASH_Tc)) {
1682  StringRef Value = A->getValue();
1683  if (DiagnoseInputExistence(*this, Args, Value, types::TY_C)) {
1684  Arg *InputArg = MakeInputArg(Args, *Opts, A->getValue());
1685  Inputs.push_back(std::make_pair(types::TY_C, InputArg));
1686  }
1687  A->claim();
1688  } else if (A->getOption().matches(options::OPT__SLASH_Tp)) {
1689  StringRef Value = A->getValue();
1690  if (DiagnoseInputExistence(*this, Args, Value, types::TY_CXX)) {
1691  Arg *InputArg = MakeInputArg(Args, *Opts, A->getValue());
1692  Inputs.push_back(std::make_pair(types::TY_CXX, InputArg));
1693  }
1694  A->claim();
1695  } else if (A->getOption().hasFlag(options::LinkerInput)) {
1696  // Just treat as object type, we could make a special type for this if
1697  // necessary.
1698  Inputs.push_back(std::make_pair(types::TY_Object, A));
1699 
1700  } else if (A->getOption().matches(options::OPT_x)) {
1701  InputTypeArg = A;
1702  InputType = types::lookupTypeForTypeSpecifier(A->getValue());
1703  A->claim();
1704 
1705  // Follow gcc behavior and treat as linker input for invalid -x
1706  // options. Its not clear why we shouldn't just revert to unknown; but
1707  // this isn't very important, we might as well be bug compatible.
1708  if (!InputType) {
1709  Diag(clang::diag::err_drv_unknown_language) << A->getValue();
1710  InputType = types::TY_Object;
1711  }
1712  } else if (A->getOption().getID() == options::OPT__SLASH_U) {
1713  assert(A->getNumValues() == 1 && "The /U option has one value.");
1714  StringRef Val = A->getValue(0);
1715  if (Val.find_first_of("/\\") != StringRef::npos) {
1716  // Warn about e.g. "/Users/me/myfile.c".
1717  Diag(diag::warn_slash_u_filename) << Val;
1718  Diag(diag::note_use_dashdash);
1719  }
1720  }
1721  }
1722  if (CCCIsCPP() && Inputs.empty()) {
1723  // If called as standalone preprocessor, stdin is processed
1724  // if no other input is present.
1725  Arg *A = MakeInputArg(Args, *Opts, "-");
1726  Inputs.push_back(std::make_pair(types::TY_C, A));
1727  }
1728 }
1729 
1730 namespace {
1731 /// Provides a convenient interface for different programming models to generate
1732 /// the required device actions.
1733 class OffloadingActionBuilder final {
1734  /// Flag used to trace errors in the builder.
1735  bool IsValid = false;
1736 
1737  /// The compilation that is using this builder.
1738  Compilation &C;
1739 
1740  /// Map between an input argument and the offload kinds used to process it.
1741  std::map<const Arg *, unsigned> InputArgToOffloadKindMap;
1742 
1743  /// Builder interface. It doesn't build anything or keep any state.
1744  class DeviceActionBuilder {
1745  public:
1747 
1748  enum ActionBuilderReturnCode {
1749  // The builder acted successfully on the current action.
1750  ABRT_Success,
1751  // The builder didn't have to act on the current action.
1752  ABRT_Inactive,
1753  // The builder was successful and requested the host action to not be
1754  // generated.
1755  ABRT_Ignore_Host,
1756  };
1757 
1758  protected:
1759  /// Compilation associated with this builder.
1760  Compilation &C;
1761 
1762  /// Tool chains associated with this builder. The same programming
1763  /// model may have associated one or more tool chains.
1765 
1766  /// The derived arguments associated with this builder.
1767  DerivedArgList &Args;
1768 
1769  /// The inputs associated with this builder.
1770  const Driver::InputList &Inputs;
1771 
1772  /// The associated offload kind.
1773  Action::OffloadKind AssociatedOffloadKind = Action::OFK_None;
1774 
1775  public:
1776  DeviceActionBuilder(Compilation &C, DerivedArgList &Args,
1777  const Driver::InputList &Inputs,
1778  Action::OffloadKind AssociatedOffloadKind)
1779  : C(C), Args(Args), Inputs(Inputs),
1780  AssociatedOffloadKind(AssociatedOffloadKind) {}
1781  virtual ~DeviceActionBuilder() {}
1782 
1783  /// Fill up the array \a DA with all the device dependences that should be
1784  /// added to the provided host action \a HostAction. By default it is
1785  /// inactive.
1786  virtual ActionBuilderReturnCode
1787  getDeviceDependences(OffloadAction::DeviceDependences &DA,
1788  phases::ID CurPhase, phases::ID FinalPhase,
1789  PhasesTy &Phases) {
1790  return ABRT_Inactive;
1791  }
1792 
1793  /// Update the state to include the provided host action \a HostAction as a
1794  /// dependency of the current device action. By default it is inactive.
1795  virtual ActionBuilderReturnCode addDeviceDepences(Action *HostAction) {
1796  return ABRT_Inactive;
1797  }
1798 
1799  /// Append top level actions generated by the builder. Return true if errors
1800  /// were found.
1801  virtual void appendTopLevelActions(ActionList &AL) {}
1802 
1803  /// Append linker actions generated by the builder. Return true if errors
1804  /// were found.
1805  virtual void appendLinkDependences(OffloadAction::DeviceDependences &DA) {}
1806 
1807  /// Initialize the builder. Return true if any initialization errors are
1808  /// found.
1809  virtual bool initialize() { return false; }
1810 
1811  /// Return true if the builder can use bundling/unbundling.
1812  virtual bool canUseBundlerUnbundler() const { return false; }
1813 
1814  /// Return true if this builder is valid. We have a valid builder if we have
1815  /// associated device tool chains.
1816  bool isValid() { return !ToolChains.empty(); }
1817 
1818  /// Return the associated offload kind.
1819  Action::OffloadKind getAssociatedOffloadKind() {
1820  return AssociatedOffloadKind;
1821  }
1822  };
1823 
1824  /// \brief CUDA action builder. It injects device code in the host backend
1825  /// action.
1826  class CudaActionBuilder final : public DeviceActionBuilder {
1827  /// Flags to signal if the user requested host-only or device-only
1828  /// compilation.
1829  bool CompileHostOnly = false;
1830  bool CompileDeviceOnly = false;
1831 
1832  /// List of GPU architectures to use in this compilation.
1833  SmallVector<CudaArch, 4> GpuArchList;
1834 
1835  /// The CUDA actions for the current input.
1836  ActionList CudaDeviceActions;
1837 
1838  /// The CUDA fat binary if it was generated for the current input.
1839  Action *CudaFatBinary = nullptr;
1840 
1841  /// Flag that is set to true if this builder acted on the current input.
1842  bool IsActive = false;
1843 
1844  public:
1845  CudaActionBuilder(Compilation &C, DerivedArgList &Args,
1846  const Driver::InputList &Inputs)
1847  : DeviceActionBuilder(C, Args, Inputs, Action::OFK_Cuda) {}
1848 
1849  ActionBuilderReturnCode
1850  getDeviceDependences(OffloadAction::DeviceDependences &DA,
1851  phases::ID CurPhase, phases::ID FinalPhase,
1852  PhasesTy &Phases) override {
1853  if (!IsActive)
1854  return ABRT_Inactive;
1855 
1856  // If we don't have more CUDA actions, we don't have any dependences to
1857  // create for the host.
1858  if (CudaDeviceActions.empty())
1859  return ABRT_Success;
1860 
1861  assert(CudaDeviceActions.size() == GpuArchList.size() &&
1862  "Expecting one action per GPU architecture.");
1863  assert(!CompileHostOnly &&
1864  "Not expecting CUDA actions in host-only compilation.");
1865 
1866  // If we are generating code for the device or we are in a backend phase,
1867  // we attempt to generate the fat binary. We compile each arch to ptx and
1868  // assemble to cubin, then feed the cubin *and* the ptx into a device
1869  // "link" action, which uses fatbinary to combine these cubins into one
1870  // fatbin. The fatbin is then an input to the host action if not in
1871  // device-only mode.
1872  if (CompileDeviceOnly || CurPhase == phases::Backend) {
1873  ActionList DeviceActions;
1874  for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I) {
1875  // Produce the device action from the current phase up to the assemble
1876  // phase.
1877  for (auto Ph : Phases) {
1878  // Skip the phases that were already dealt with.
1879  if (Ph < CurPhase)
1880  continue;
1881  // We have to be consistent with the host final phase.
1882  if (Ph > FinalPhase)
1883  break;
1884 
1885  CudaDeviceActions[I] = C.getDriver().ConstructPhaseAction(
1886  C, Args, Ph, CudaDeviceActions[I]);
1887 
1888  if (Ph == phases::Assemble)
1889  break;
1890  }
1891 
1892  // If we didn't reach the assemble phase, we can't generate the fat
1893  // binary. We don't need to generate the fat binary if we are not in
1894  // device-only mode.
1895  if (!isa<AssembleJobAction>(CudaDeviceActions[I]) ||
1896  CompileDeviceOnly)
1897  continue;
1898 
1899  Action *AssembleAction = CudaDeviceActions[I];
1900  assert(AssembleAction->getType() == types::TY_Object);
1901  assert(AssembleAction->getInputs().size() == 1);
1902 
1903  Action *BackendAction = AssembleAction->getInputs()[0];
1904  assert(BackendAction->getType() == types::TY_PP_Asm);
1905 
1906  for (auto &A : {AssembleAction, BackendAction}) {
1908  DDep.add(*A, *ToolChains.front(), CudaArchToString(GpuArchList[I]),
1910  DeviceActions.push_back(
1911  C.MakeAction<OffloadAction>(DDep, A->getType()));
1912  }
1913  }
1914 
1915  // We generate the fat binary if we have device input actions.
1916  if (!DeviceActions.empty()) {
1917  CudaFatBinary =
1918  C.MakeAction<LinkJobAction>(DeviceActions, types::TY_CUDA_FATBIN);
1919 
1920  if (!CompileDeviceOnly) {
1921  DA.add(*CudaFatBinary, *ToolChains.front(), /*BoundArch=*/nullptr,
1923  // Clear the fat binary, it is already a dependence to an host
1924  // action.
1925  CudaFatBinary = nullptr;
1926  }
1927 
1928  // Remove the CUDA actions as they are already connected to an host
1929  // action or fat binary.
1930  CudaDeviceActions.clear();
1931  }
1932 
1933  // We avoid creating host action in device-only mode.
1934  return CompileDeviceOnly ? ABRT_Ignore_Host : ABRT_Success;
1935  } else if (CurPhase > phases::Backend) {
1936  // If we are past the backend phase and still have a device action, we
1937  // don't have to do anything as this action is already a device
1938  // top-level action.
1939  return ABRT_Success;
1940  }
1941 
1942  assert(CurPhase < phases::Backend && "Generating single CUDA "
1943  "instructions should only occur "
1944  "before the backend phase!");
1945 
1946  // By default, we produce an action for each device arch.
1947  for (Action *&A : CudaDeviceActions)
1948  A = C.getDriver().ConstructPhaseAction(C, Args, CurPhase, A);
1949 
1950  return ABRT_Success;
1951  }
1952 
1953  ActionBuilderReturnCode addDeviceDepences(Action *HostAction) override {
1954  // While generating code for CUDA, we only depend on the host input action
1955  // to trigger the creation of all the CUDA device actions.
1956 
1957  // If we are dealing with an input action, replicate it for each GPU
1958  // architecture. If we are in host-only mode we return 'success' so that
1959  // the host uses the CUDA offload kind.
1960  if (auto *IA = dyn_cast<InputAction>(HostAction)) {
1961  assert(!GpuArchList.empty() &&
1962  "We should have at least one GPU architecture.");
1963 
1964  // If the host input is not CUDA, we don't need to bother about this
1965  // input.
1966  if (IA->getType() != types::TY_CUDA) {
1967  // The builder will ignore this input.
1968  IsActive = false;
1969  return ABRT_Inactive;
1970  }
1971 
1972  // Set the flag to true, so that the builder acts on the current input.
1973  IsActive = true;
1974 
1975  if (CompileHostOnly)
1976  return ABRT_Success;
1977 
1978  // Replicate inputs for each GPU architecture.
1979  for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
1980  CudaDeviceActions.push_back(C.MakeAction<InputAction>(
1981  IA->getInputArg(), types::TY_CUDA_DEVICE));
1982 
1983  return ABRT_Success;
1984  }
1985 
1986  return IsActive ? ABRT_Success : ABRT_Inactive;
1987  }
1988 
1989  void appendTopLevelActions(ActionList &AL) override {
1990  // Utility to append actions to the top level list.
1991  auto AddTopLevel = [&](Action *A, CudaArch BoundArch) {
1993  Dep.add(*A, *ToolChains.front(), CudaArchToString(BoundArch),
1995  AL.push_back(C.MakeAction<OffloadAction>(Dep, A->getType()));
1996  };
1997 
1998  // If we have a fat binary, add it to the list.
1999  if (CudaFatBinary) {
2000  AddTopLevel(CudaFatBinary, CudaArch::UNKNOWN);
2001  CudaDeviceActions.clear();
2002  CudaFatBinary = nullptr;
2003  return;
2004  }
2005 
2006  if (CudaDeviceActions.empty())
2007  return;
2008 
2009  // If we have CUDA actions at this point, that's because we have a have
2010  // partial compilation, so we should have an action for each GPU
2011  // architecture.
2012  assert(CudaDeviceActions.size() == GpuArchList.size() &&
2013  "Expecting one action per GPU architecture.");
2014  assert(ToolChains.size() == 1 &&
2015  "Expecting to have a sing CUDA toolchain.");
2016  for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
2017  AddTopLevel(CudaDeviceActions[I], GpuArchList[I]);
2018 
2019  CudaDeviceActions.clear();
2020  }
2021 
2022  bool initialize() override {
2023  // We don't need to support CUDA.
2025  return false;
2026 
2028  assert(HostTC && "No toolchain for host compilation.");
2029  if (HostTC->getTriple().isNVPTX()) {
2030  // We do not support targeting NVPTX for host compilation. Throw
2031  // an error and abort pipeline construction early so we don't trip
2032  // asserts that assume device-side compilation.
2033  C.getDriver().Diag(diag::err_drv_cuda_nvptx_host);
2034  return true;
2035  }
2036 
2037  ToolChains.push_back(C.getSingleOffloadToolChain<Action::OFK_Cuda>());
2038 
2039  Arg *PartialCompilationArg = Args.getLastArg(
2040  options::OPT_cuda_host_only, options::OPT_cuda_device_only,
2041  options::OPT_cuda_compile_host_device);
2042  CompileHostOnly = PartialCompilationArg &&
2043  PartialCompilationArg->getOption().matches(
2044  options::OPT_cuda_host_only);
2045  CompileDeviceOnly = PartialCompilationArg &&
2046  PartialCompilationArg->getOption().matches(
2047  options::OPT_cuda_device_only);
2048 
2049  // Collect all cuda_gpu_arch parameters, removing duplicates.
2050  std::set<CudaArch> GpuArchs;
2051  bool Error = false;
2052  for (Arg *A : Args) {
2053  if (!(A->getOption().matches(options::OPT_cuda_gpu_arch_EQ) ||
2054  A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ)))
2055  continue;
2056  A->claim();
2057 
2058  const StringRef ArchStr = A->getValue();
2059  if (A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ) &&
2060  ArchStr == "all") {
2061  GpuArchs.clear();
2062  continue;
2063  }
2064  CudaArch Arch = StringToCudaArch(ArchStr);
2065  if (Arch == CudaArch::UNKNOWN) {
2066  C.getDriver().Diag(clang::diag::err_drv_cuda_bad_gpu_arch) << ArchStr;
2067  Error = true;
2068  } else if (A->getOption().matches(options::OPT_cuda_gpu_arch_EQ))
2069  GpuArchs.insert(Arch);
2070  else if (A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ))
2071  GpuArchs.erase(Arch);
2072  else
2073  llvm_unreachable("Unexpected option.");
2074  }
2075 
2076  // Collect list of GPUs remaining in the set.
2077  for (CudaArch Arch : GpuArchs)
2078  GpuArchList.push_back(Arch);
2079 
2080  // Default to sm_20 which is the lowest common denominator for
2081  // supported GPUs. sm_20 code should work correctly, if
2082  // suboptimally, on all newer GPUs.
2083  if (GpuArchList.empty())
2084  GpuArchList.push_back(CudaArch::SM_20);
2085 
2086  return Error;
2087  }
2088  };
2089 
2090  /// OpenMP action builder. The host bitcode is passed to the device frontend
2091  /// and all the device linked images are passed to the host link phase.
2092  class OpenMPActionBuilder final : public DeviceActionBuilder {
2093  /// The OpenMP actions for the current input.
2094  ActionList OpenMPDeviceActions;
2095 
2096  /// The linker inputs obtained for each toolchain.
2097  SmallVector<ActionList, 8> DeviceLinkerInputs;
2098 
2099  public:
2100  OpenMPActionBuilder(Compilation &C, DerivedArgList &Args,
2101  const Driver::InputList &Inputs)
2102  : DeviceActionBuilder(C, Args, Inputs, Action::OFK_OpenMP) {}
2103 
2104  ActionBuilderReturnCode
2105  getDeviceDependences(OffloadAction::DeviceDependences &DA,
2106  phases::ID CurPhase, phases::ID FinalPhase,
2107  PhasesTy &Phases) override {
2108 
2109  // We should always have an action for each input.
2110  assert(OpenMPDeviceActions.size() == ToolChains.size() &&
2111  "Number of OpenMP actions and toolchains do not match.");
2112 
2113  // The host only depends on device action in the linking phase, when all
2114  // the device images have to be embedded in the host image.
2115  if (CurPhase == phases::Link) {
2116  assert(ToolChains.size() == DeviceLinkerInputs.size() &&
2117  "Toolchains and linker inputs sizes do not match.");
2118  auto LI = DeviceLinkerInputs.begin();
2119  for (auto *A : OpenMPDeviceActions) {
2120  LI->push_back(A);
2121  ++LI;
2122  }
2123 
2124  // We passed the device action as a host dependence, so we don't need to
2125  // do anything else with them.
2126  OpenMPDeviceActions.clear();
2127  return ABRT_Success;
2128  }
2129 
2130  // By default, we produce an action for each device arch.
2131  for (Action *&A : OpenMPDeviceActions)
2132  A = C.getDriver().ConstructPhaseAction(C, Args, CurPhase, A);
2133 
2134  return ABRT_Success;
2135  }
2136 
2137  ActionBuilderReturnCode addDeviceDepences(Action *HostAction) override {
2138 
2139  // If this is an input action replicate it for each OpenMP toolchain.
2140  if (auto *IA = dyn_cast<InputAction>(HostAction)) {
2141  OpenMPDeviceActions.clear();
2142  for (unsigned I = 0; I < ToolChains.size(); ++I)
2143  OpenMPDeviceActions.push_back(
2144  C.MakeAction<InputAction>(IA->getInputArg(), IA->getType()));
2145  return ABRT_Success;
2146  }
2147 
2148  // If this is an unbundling action use it as is for each OpenMP toolchain.
2149  if (auto *UA = dyn_cast<OffloadUnbundlingJobAction>(HostAction)) {
2150  OpenMPDeviceActions.clear();
2151  for (unsigned I = 0; I < ToolChains.size(); ++I) {
2152  OpenMPDeviceActions.push_back(UA);
2153  UA->registerDependentActionInfo(
2154  ToolChains[I], /*BoundArch=*/StringRef(), Action::OFK_OpenMP);
2155  }
2156  return ABRT_Success;
2157  }
2158 
2159  // When generating code for OpenMP we use the host compile phase result as
2160  // a dependence to the device compile phase so that it can learn what
2161  // declarations should be emitted. However, this is not the only use for
2162  // the host action, so we prevent it from being collapsed.
2163  if (isa<CompileJobAction>(HostAction)) {
2165  assert(ToolChains.size() == OpenMPDeviceActions.size() &&
2166  "Toolchains and device action sizes do not match.");
2168  *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2169  /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2170  auto TC = ToolChains.begin();
2171  for (Action *&A : OpenMPDeviceActions) {
2172  assert(isa<CompileJobAction>(A));
2174  DDep.add(*A, **TC, /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2175  A = C.MakeAction<OffloadAction>(HDep, DDep);
2176  ++TC;
2177  }
2178  }
2179  return ABRT_Success;
2180  }
2181 
2182  void appendTopLevelActions(ActionList &AL) override {
2183  if (OpenMPDeviceActions.empty())
2184  return;
2185 
2186  // We should always have an action for each input.
2187  assert(OpenMPDeviceActions.size() == ToolChains.size() &&
2188  "Number of OpenMP actions and toolchains do not match.");
2189 
2190  // Append all device actions followed by the proper offload action.
2191  auto TI = ToolChains.begin();
2192  for (auto *A : OpenMPDeviceActions) {
2194  Dep.add(*A, **TI, /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2195  AL.push_back(C.MakeAction<OffloadAction>(Dep, A->getType()));
2196  ++TI;
2197  }
2198  // We no longer need the action stored in this builder.
2199  OpenMPDeviceActions.clear();
2200  }
2201 
2202  void appendLinkDependences(OffloadAction::DeviceDependences &DA) override {
2203  assert(ToolChains.size() == DeviceLinkerInputs.size() &&
2204  "Toolchains and linker inputs sizes do not match.");
2205 
2206  // Append a new link action for each device.
2207  auto TC = ToolChains.begin();
2208  for (auto &LI : DeviceLinkerInputs) {
2209  auto *DeviceLinkAction =
2210  C.MakeAction<LinkJobAction>(LI, types::TY_Image);
2211  DA.add(*DeviceLinkAction, **TC, /*BoundArch=*/nullptr,
2213  ++TC;
2214  }
2215  }
2216 
2217  bool initialize() override {
2218  // Get the OpenMP toolchains. If we don't get any, the action builder will
2219  // know there is nothing to do related to OpenMP offloading.
2220  auto OpenMPTCRange = C.getOffloadToolChains<Action::OFK_OpenMP>();
2221  for (auto TI = OpenMPTCRange.first, TE = OpenMPTCRange.second; TI != TE;
2222  ++TI)
2223  ToolChains.push_back(TI->second);
2224 
2225  DeviceLinkerInputs.resize(ToolChains.size());
2226  return false;
2227  }
2228 
2229  bool canUseBundlerUnbundler() const override {
2230  // OpenMP should use bundled files whenever possible.
2231  return true;
2232  }
2233  };
2234 
2235  ///
2236  /// TODO: Add the implementation for other specialized builders here.
2237  ///
2238 
2239  /// Specialized builders being used by this offloading action builder.
2240  SmallVector<DeviceActionBuilder *, 4> SpecializedBuilders;
2241 
2242  /// Flag set to true if all valid builders allow file bundling/unbundling.
2243  bool CanUseBundler;
2244 
2245 public:
2246  OffloadingActionBuilder(Compilation &C, DerivedArgList &Args,
2247  const Driver::InputList &Inputs)
2248  : C(C) {
2249  // Create a specialized builder for each device toolchain.
2250 
2251  IsValid = true;
2252 
2253  // Create a specialized builder for CUDA.
2254  SpecializedBuilders.push_back(new CudaActionBuilder(C, Args, Inputs));
2255 
2256  // Create a specialized builder for OpenMP.
2257  SpecializedBuilders.push_back(new OpenMPActionBuilder(C, Args, Inputs));
2258 
2259  //
2260  // TODO: Build other specialized builders here.
2261  //
2262 
2263  // Initialize all the builders, keeping track of errors. If all valid
2264  // builders agree that we can use bundling, set the flag to true.
2265  unsigned ValidBuilders = 0u;
2266  unsigned ValidBuildersSupportingBundling = 0u;
2267  for (auto *SB : SpecializedBuilders) {
2268  IsValid = IsValid && !SB->initialize();
2269 
2270  // Update the counters if the builder is valid.
2271  if (SB->isValid()) {
2272  ++ValidBuilders;
2273  if (SB->canUseBundlerUnbundler())
2274  ++ValidBuildersSupportingBundling;
2275  }
2276  }
2277  CanUseBundler =
2278  ValidBuilders && ValidBuilders == ValidBuildersSupportingBundling;
2279  }
2280 
2281  ~OffloadingActionBuilder() {
2282  for (auto *SB : SpecializedBuilders)
2283  delete SB;
2284  }
2285 
2286  /// Generate an action that adds device dependences (if any) to a host action.
2287  /// If no device dependence actions exist, just return the host action \a
2288  /// HostAction. If an error is found or if no builder requires the host action
2289  /// to be generated, return nullptr.
2290  Action *
2291  addDeviceDependencesToHostAction(Action *HostAction, const Arg *InputArg,
2292  phases::ID CurPhase, phases::ID FinalPhase,
2293  DeviceActionBuilder::PhasesTy &Phases) {
2294  if (!IsValid)
2295  return nullptr;
2296 
2297  if (SpecializedBuilders.empty())
2298  return HostAction;
2299 
2300  assert(HostAction && "Invalid host action!");
2301 
2303  // Check if all the programming models agree we should not emit the host
2304  // action. Also, keep track of the offloading kinds employed.
2305  auto &OffloadKind = InputArgToOffloadKindMap[InputArg];
2306  unsigned InactiveBuilders = 0u;
2307  unsigned IgnoringBuilders = 0u;
2308  for (auto *SB : SpecializedBuilders) {
2309  if (!SB->isValid()) {
2310  ++InactiveBuilders;
2311  continue;
2312  }
2313 
2314  auto RetCode =
2315  SB->getDeviceDependences(DDeps, CurPhase, FinalPhase, Phases);
2316 
2317  // If the builder explicitly says the host action should be ignored,
2318  // we need to increment the variable that tracks the builders that request
2319  // the host object to be ignored.
2320  if (RetCode == DeviceActionBuilder::ABRT_Ignore_Host)
2321  ++IgnoringBuilders;
2322 
2323  // Unless the builder was inactive for this action, we have to record the
2324  // offload kind because the host will have to use it.
2325  if (RetCode != DeviceActionBuilder::ABRT_Inactive)
2326  OffloadKind |= SB->getAssociatedOffloadKind();
2327  }
2328 
2329  // If all builders agree that the host object should be ignored, just return
2330  // nullptr.
2331  if (IgnoringBuilders &&
2332  SpecializedBuilders.size() == (InactiveBuilders + IgnoringBuilders))
2333  return nullptr;
2334 
2335  if (DDeps.getActions().empty())
2336  return HostAction;
2337 
2338  // We have dependences we need to bundle together. We use an offload action
2339  // for that.
2341  *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2342  /*BoundArch=*/nullptr, DDeps);
2343  return C.MakeAction<OffloadAction>(HDep, DDeps);
2344  }
2345 
2346  /// Generate an action that adds a host dependence to a device action. The
2347  /// results will be kept in this action builder. Return true if an error was
2348  /// found.
2349  bool addHostDependenceToDeviceActions(Action *&HostAction,
2350  const Arg *InputArg) {
2351  if (!IsValid)
2352  return true;
2353 
2354  // If we are supporting bundling/unbundling and the current action is an
2355  // input action of non-source file, we replace the host action by the
2356  // unbundling action. The bundler tool has the logic to detect if an input
2357  // is a bundle or not and if the input is not a bundle it assumes it is a
2358  // host file. Therefore it is safe to create an unbundling action even if
2359  // the input is not a bundle.
2360  if (CanUseBundler && isa<InputAction>(HostAction) &&
2361  InputArg->getOption().getKind() == llvm::opt::Option::InputClass &&
2362  !types::isSrcFile(HostAction->getType())) {
2363  auto UnbundlingHostAction =
2364  C.MakeAction<OffloadUnbundlingJobAction>(HostAction);
2365  UnbundlingHostAction->registerDependentActionInfo(
2367  /*BoundArch=*/StringRef(), Action::OFK_Host);
2368  HostAction = UnbundlingHostAction;
2369  }
2370 
2371  assert(HostAction && "Invalid host action!");
2372 
2373  // Register the offload kinds that are used.
2374  auto &OffloadKind = InputArgToOffloadKindMap[InputArg];
2375  for (auto *SB : SpecializedBuilders) {
2376  if (!SB->isValid())
2377  continue;
2378 
2379  auto RetCode = SB->addDeviceDepences(HostAction);
2380 
2381  // Host dependences for device actions are not compatible with that same
2382  // action being ignored.
2383  assert(RetCode != DeviceActionBuilder::ABRT_Ignore_Host &&
2384  "Host dependence not expected to be ignored.!");
2385 
2386  // Unless the builder was inactive for this action, we have to record the
2387  // offload kind because the host will have to use it.
2388  if (RetCode != DeviceActionBuilder::ABRT_Inactive)
2389  OffloadKind |= SB->getAssociatedOffloadKind();
2390  }
2391 
2392  return false;
2393  }
2394 
2395  /// Add the offloading top level actions to the provided action list. This
2396  /// function can replace the host action by a bundling action if the
2397  /// programming models allow it.
2398  bool appendTopLevelActions(ActionList &AL, Action *HostAction,
2399  const Arg *InputArg) {
2400  // Get the device actions to be appended.
2401  ActionList OffloadAL;
2402  for (auto *SB : SpecializedBuilders) {
2403  if (!SB->isValid())
2404  continue;
2405  SB->appendTopLevelActions(OffloadAL);
2406  }
2407 
2408  // If we can use the bundler, replace the host action by the bundling one in
2409  // the resulting list. Otherwise, just append the device actions.
2410  if (CanUseBundler && !OffloadAL.empty()) {
2411  // Add the host action to the list in order to create the bundling action.
2412  OffloadAL.push_back(HostAction);
2413 
2414  // We expect that the host action was just appended to the action list
2415  // before this method was called.
2416  assert(HostAction == AL.back() && "Host action not in the list??");
2417  HostAction = C.MakeAction<OffloadBundlingJobAction>(OffloadAL);
2418  AL.back() = HostAction;
2419  } else
2420  AL.append(OffloadAL.begin(), OffloadAL.end());
2421 
2422  // Propagate to the current host action (if any) the offload information
2423  // associated with the current input.
2424  if (HostAction)
2425  HostAction->propagateHostOffloadInfo(InputArgToOffloadKindMap[InputArg],
2426  /*BoundArch=*/nullptr);
2427  return false;
2428  }
2429 
2430  /// Processes the host linker action. This currently consists of replacing it
2431  /// with an offload action if there are device link objects and propagate to
2432  /// the host action all the offload kinds used in the current compilation. The
2433  /// resulting action is returned.
2434  Action *processHostLinkAction(Action *HostAction) {
2435  // Add all the dependences from the device linking actions.
2437  for (auto *SB : SpecializedBuilders) {
2438  if (!SB->isValid())
2439  continue;
2440 
2441  SB->appendLinkDependences(DDeps);
2442  }
2443 
2444  // Calculate all the offload kinds used in the current compilation.
2445  unsigned ActiveOffloadKinds = 0u;
2446  for (auto &I : InputArgToOffloadKindMap)
2447  ActiveOffloadKinds |= I.second;
2448 
2449  // If we don't have device dependencies, we don't have to create an offload
2450  // action.
2451  if (DDeps.getActions().empty()) {
2452  // Propagate all the active kinds to host action. Given that it is a link
2453  // action it is assumed to depend on all actions generated so far.
2454  HostAction->propagateHostOffloadInfo(ActiveOffloadKinds,
2455  /*BoundArch=*/nullptr);
2456  return HostAction;
2457  }
2458 
2459  // Create the offload action with all dependences. When an offload action
2460  // is created the kinds are propagated to the host action, so we don't have
2461  // to do that explicitly here.
2463  *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2464  /*BoundArch*/ nullptr, ActiveOffloadKinds);
2465  return C.MakeAction<OffloadAction>(HDep, DDeps);
2466  }
2467 };
2468 } // anonymous namespace.
2469 
2470 void Driver::BuildActions(Compilation &C, DerivedArgList &Args,
2471  const InputList &Inputs, ActionList &Actions) const {
2472  llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
2473 
2474  if (!SuppressMissingInputWarning && Inputs.empty()) {
2475  Diag(clang::diag::err_drv_no_input_files);
2476  return;
2477  }
2478 
2479  Arg *FinalPhaseArg;
2480  phases::ID FinalPhase = getFinalPhase(Args, &FinalPhaseArg);
2481 
2482  if (FinalPhase == phases::Link) {
2483  if (Args.hasArg(options::OPT_emit_llvm))
2484  Diag(clang::diag::err_drv_emit_llvm_link);
2485  if (IsCLMode() && LTOMode != LTOK_None &&
2486  !Args.getLastArgValue(options::OPT_fuse_ld_EQ).equals_lower("lld"))
2487  Diag(clang::diag::err_drv_lto_without_lld);
2488  }
2489 
2490  // Reject -Z* at the top level, these options should never have been exposed
2491  // by gcc.
2492  if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
2493  Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
2494 
2495  // Diagnose misuse of /Fo.
2496  if (Arg *A = Args.getLastArg(options::OPT__SLASH_Fo)) {
2497  StringRef V = A->getValue();
2498  if (Inputs.size() > 1 && !V.empty() &&
2499  !llvm::sys::path::is_separator(V.back())) {
2500  // Check whether /Fo tries to name an output file for multiple inputs.
2501  Diag(clang::diag::err_drv_out_file_argument_with_multiple_sources)
2502  << A->getSpelling() << V;
2503  Args.eraseArg(options::OPT__SLASH_Fo);
2504  }
2505  }
2506 
2507  // Diagnose misuse of /Fa.
2508  if (Arg *A = Args.getLastArg(options::OPT__SLASH_Fa)) {
2509  StringRef V = A->getValue();
2510  if (Inputs.size() > 1 && !V.empty() &&
2511  !llvm::sys::path::is_separator(V.back())) {
2512  // Check whether /Fa tries to name an asm file for multiple inputs.
2513  Diag(clang::diag::err_drv_out_file_argument_with_multiple_sources)
2514  << A->getSpelling() << V;
2515  Args.eraseArg(options::OPT__SLASH_Fa);
2516  }
2517  }
2518 
2519  // Diagnose misuse of /o.
2520  if (Arg *A = Args.getLastArg(options::OPT__SLASH_o)) {
2521  if (A->getValue()[0] == '\0') {
2522  // It has to have a value.
2523  Diag(clang::diag::err_drv_missing_argument) << A->getSpelling() << 1;
2524  Args.eraseArg(options::OPT__SLASH_o);
2525  }
2526  }
2527 
2528  // Diagnose unsupported forms of /Yc /Yu. Ignore /Yc/Yu for now if:
2529  // * no filename after it
2530  // * both /Yc and /Yu passed but with different filenames
2531  // * corresponding file not also passed as /FI
2532  Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
2533  Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
2534  if (YcArg && YcArg->getValue()[0] == '\0') {
2535  Diag(clang::diag::warn_drv_ycyu_no_arg_clang_cl) << YcArg->getSpelling();
2536  Args.eraseArg(options::OPT__SLASH_Yc);
2537  YcArg = nullptr;
2538  }
2539  if (YuArg && YuArg->getValue()[0] == '\0') {
2540  Diag(clang::diag::warn_drv_ycyu_no_arg_clang_cl) << YuArg->getSpelling();
2541  Args.eraseArg(options::OPT__SLASH_Yu);
2542  YuArg = nullptr;
2543  }
2544  if (YcArg && YuArg && strcmp(YcArg->getValue(), YuArg->getValue()) != 0) {
2545  Diag(clang::diag::warn_drv_ycyu_different_arg_clang_cl);
2546  Args.eraseArg(options::OPT__SLASH_Yc);
2547  Args.eraseArg(options::OPT__SLASH_Yu);
2548  YcArg = YuArg = nullptr;
2549  }
2550  if (YcArg || YuArg) {
2551  StringRef Val = YcArg ? YcArg->getValue() : YuArg->getValue();
2552  bool FoundMatchingInclude = false;
2553  for (const Arg *Inc : Args.filtered(options::OPT_include)) {
2554  // FIXME: Do case-insensitive matching and consider / and \ as equal.
2555  if (Inc->getValue() == Val)
2556  FoundMatchingInclude = true;
2557  }
2558  if (!FoundMatchingInclude) {
2559  Diag(clang::diag::warn_drv_ycyu_no_fi_arg_clang_cl)
2560  << (YcArg ? YcArg : YuArg)->getSpelling();
2561  Args.eraseArg(options::OPT__SLASH_Yc);
2562  Args.eraseArg(options::OPT__SLASH_Yu);
2563  YcArg = YuArg = nullptr;
2564  }
2565  }
2566  if (YcArg && Inputs.size() > 1) {
2567  Diag(clang::diag::warn_drv_yc_multiple_inputs_clang_cl);
2568  Args.eraseArg(options::OPT__SLASH_Yc);
2569  YcArg = nullptr;
2570  }
2571  if (Args.hasArg(options::OPT__SLASH_Y_)) {
2572  // /Y- disables all pch handling. Rather than check for it everywhere,
2573  // just remove clang-cl pch-related flags here.
2574  Args.eraseArg(options::OPT__SLASH_Fp);
2575  Args.eraseArg(options::OPT__SLASH_Yc);
2576  Args.eraseArg(options::OPT__SLASH_Yu);
2577  YcArg = YuArg = nullptr;
2578  }
2579 
2580  // Builder to be used to build offloading actions.
2581  OffloadingActionBuilder OffloadBuilder(C, Args, Inputs);
2582 
2583  // Construct the actions to perform.
2584  ActionList LinkerInputs;
2585 
2587  for (auto &I : Inputs) {
2588  types::ID InputType = I.first;
2589  const Arg *InputArg = I.second;
2590 
2591  PL.clear();
2592  types::getCompilationPhases(InputType, PL);
2593 
2594  // If the first step comes after the final phase we are doing as part of
2595  // this compilation, warn the user about it.
2596  phases::ID InitialPhase = PL[0];
2597  if (InitialPhase > FinalPhase) {
2598  // Claim here to avoid the more general unused warning.
2599  InputArg->claim();
2600 
2601  // Suppress all unused style warnings with -Qunused-arguments
2602  if (Args.hasArg(options::OPT_Qunused_arguments))
2603  continue;
2604 
2605  // Special case when final phase determined by binary name, rather than
2606  // by a command-line argument with a corresponding Arg.
2607  if (CCCIsCPP())
2608  Diag(clang::diag::warn_drv_input_file_unused_by_cpp)
2609  << InputArg->getAsString(Args) << getPhaseName(InitialPhase);
2610  // Special case '-E' warning on a previously preprocessed file to make
2611  // more sense.
2612  else if (InitialPhase == phases::Compile &&
2613  FinalPhase == phases::Preprocess &&
2614  getPreprocessedType(InputType) == types::TY_INVALID)
2615  Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
2616  << InputArg->getAsString(Args) << !!FinalPhaseArg
2617  << (FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "");
2618  else
2619  Diag(clang::diag::warn_drv_input_file_unused)
2620  << InputArg->getAsString(Args) << getPhaseName(InitialPhase)
2621  << !!FinalPhaseArg
2622  << (FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "");
2623  continue;
2624  }
2625 
2626  if (YcArg) {
2627  // Add a separate precompile phase for the compile phase.
2628  if (FinalPhase >= phases::Compile) {
2629  const types::ID HeaderType = lookupHeaderTypeForSourceType(InputType);
2631  types::getCompilationPhases(HeaderType, PCHPL);
2632  Arg *PchInputArg = MakeInputArg(Args, *Opts, YcArg->getValue());
2633 
2634  // Build the pipeline for the pch file.
2635  Action *ClangClPch =
2636  C.MakeAction<InputAction>(*PchInputArg, HeaderType);
2637  for (phases::ID Phase : PCHPL)
2638  ClangClPch = ConstructPhaseAction(C, Args, Phase, ClangClPch);
2639  assert(ClangClPch);
2640  Actions.push_back(ClangClPch);
2641  // The driver currently exits after the first failed command. This
2642  // relies on that behavior, to make sure if the pch generation fails,
2643  // the main compilation won't run.
2644  }
2645  }
2646 
2647  // Build the pipeline for this file.
2648  Action *Current = C.MakeAction<InputAction>(*InputArg, InputType);
2649 
2650  // Use the current host action in any of the offloading actions, if
2651  // required.
2652  if (OffloadBuilder.addHostDependenceToDeviceActions(Current, InputArg))
2653  break;
2654 
2655  for (SmallVectorImpl<phases::ID>::iterator i = PL.begin(), e = PL.end();
2656  i != e; ++i) {
2657  phases::ID Phase = *i;
2658 
2659  // We are done if this step is past what the user requested.
2660  if (Phase > FinalPhase)
2661  break;
2662 
2663  // Add any offload action the host action depends on.
2664  Current = OffloadBuilder.addDeviceDependencesToHostAction(
2665  Current, InputArg, Phase, FinalPhase, PL);
2666  if (!Current)
2667  break;
2668 
2669  // Queue linker inputs.
2670  if (Phase == phases::Link) {
2671  assert((i + 1) == e && "linking must be final compilation step.");
2672  LinkerInputs.push_back(Current);
2673  Current = nullptr;
2674  break;
2675  }
2676 
2677  // Otherwise construct the appropriate action.
2678  auto *NewCurrent = ConstructPhaseAction(C, Args, Phase, Current);
2679 
2680  // We didn't create a new action, so we will just move to the next phase.
2681  if (NewCurrent == Current)
2682  continue;
2683 
2684  Current = NewCurrent;
2685 
2686  // Use the current host action in any of the offloading actions, if
2687  // required.
2688  if (OffloadBuilder.addHostDependenceToDeviceActions(Current, InputArg))
2689  break;
2690 
2691  if (Current->getType() == types::TY_Nothing)
2692  break;
2693  }
2694 
2695  // If we ended with something, add to the output list.
2696  if (Current)
2697  Actions.push_back(Current);
2698 
2699  // Add any top level actions generated for offloading.
2700  OffloadBuilder.appendTopLevelActions(Actions, Current, InputArg);
2701  }
2702 
2703  // Add a link action if necessary.
2704  if (!LinkerInputs.empty()) {
2705  Action *LA = C.MakeAction<LinkJobAction>(LinkerInputs, types::TY_Image);
2706  LA = OffloadBuilder.processHostLinkAction(LA);
2707  Actions.push_back(LA);
2708  }
2709 
2710  // If we are linking, claim any options which are obviously only used for
2711  // compilation.
2712  if (FinalPhase == phases::Link && PL.size() == 1) {
2713  Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
2714  Args.ClaimAllArgs(options::OPT_cl_compile_Group);
2715  }
2716 
2717  // Claim ignored clang-cl options.
2718  Args.ClaimAllArgs(options::OPT_cl_ignored_Group);
2719 
2720  // Claim --cuda-host-only and --cuda-compile-host-device, which may be passed
2721  // to non-CUDA compilations and should not trigger warnings there.
2722  Args.ClaimAllArgs(options::OPT_cuda_host_only);
2723  Args.ClaimAllArgs(options::OPT_cuda_compile_host_device);
2724 }
2725 
2727  phases::ID Phase, Action *Input) const {
2728  llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
2729 
2730  // Some types skip the assembler phase (e.g., llvm-bc), but we can't
2731  // encode this in the steps because the intermediate type depends on
2732  // arguments. Just special case here.
2733  if (Phase == phases::Assemble && Input->getType() != types::TY_PP_Asm)
2734  return Input;
2735 
2736  // Build the appropriate action.
2737  switch (Phase) {
2738  case phases::Link:
2739  llvm_unreachable("link action invalid here.");
2740  case phases::Preprocess: {
2741  types::ID OutputTy;
2742  // -{M, MM} alter the output type.
2743  if (Args.hasArg(options::OPT_M, options::OPT_MM)) {
2744  OutputTy = types::TY_Dependencies;
2745  } else {
2746  OutputTy = Input->getType();
2747  if (!Args.hasFlag(options::OPT_frewrite_includes,
2748  options::OPT_fno_rewrite_includes, false) &&
2749  !Args.hasFlag(options::OPT_frewrite_imports,
2750  options::OPT_fno_rewrite_imports, false) &&
2752  OutputTy = types::getPreprocessedType(OutputTy);
2753  assert(OutputTy != types::TY_INVALID &&
2754  "Cannot preprocess this input type!");
2755  }
2756  return C.MakeAction<PreprocessJobAction>(Input, OutputTy);
2757  }
2758  case phases::Precompile: {
2759  types::ID OutputTy = getPrecompiledType(Input->getType());
2760  assert(OutputTy != types::TY_INVALID &&
2761  "Cannot precompile this input type!");
2762  if (Args.hasArg(options::OPT_fsyntax_only)) {
2763  // Syntax checks should not emit a PCH file
2764  OutputTy = types::TY_Nothing;
2765  }
2766  return C.MakeAction<PrecompileJobAction>(Input, OutputTy);
2767  }
2768  case phases::Compile: {
2769  if (Args.hasArg(options::OPT_fsyntax_only))
2770  return C.MakeAction<CompileJobAction>(Input, types::TY_Nothing);
2771  if (Args.hasArg(options::OPT_rewrite_objc))
2772  return C.MakeAction<CompileJobAction>(Input, types::TY_RewrittenObjC);
2773  if (Args.hasArg(options::OPT_rewrite_legacy_objc))
2774  return C.MakeAction<CompileJobAction>(Input,
2775  types::TY_RewrittenLegacyObjC);
2776  if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto))
2777  return C.MakeAction<AnalyzeJobAction>(Input, types::TY_Plist);
2778  if (Args.hasArg(options::OPT__migrate))
2779  return C.MakeAction<MigrateJobAction>(Input, types::TY_Remap);
2780  if (Args.hasArg(options::OPT_emit_ast))
2781  return C.MakeAction<CompileJobAction>(Input, types::TY_AST);
2782  if (Args.hasArg(options::OPT_module_file_info))
2783  return C.MakeAction<CompileJobAction>(Input, types::TY_ModuleFile);
2784  if (Args.hasArg(options::OPT_verify_pch))
2785  return C.MakeAction<VerifyPCHJobAction>(Input, types::TY_Nothing);
2786  return C.MakeAction<CompileJobAction>(Input, types::TY_LLVM_BC);
2787  }
2788  case phases::Backend: {
2789  if (isUsingLTO()) {
2790  types::ID Output =
2791  Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC;
2792  return C.MakeAction<BackendJobAction>(Input, Output);
2793  }
2794  if (Args.hasArg(options::OPT_emit_llvm)) {
2795  types::ID Output =
2796  Args.hasArg(options::OPT_S) ? types::TY_LLVM_IR : types::TY_LLVM_BC;
2797  return C.MakeAction<BackendJobAction>(Input, Output);
2798  }
2799  return C.MakeAction<BackendJobAction>(Input, types::TY_PP_Asm);
2800  }
2801  case phases::Assemble:
2802  return C.MakeAction<AssembleJobAction>(std::move(Input), types::TY_Object);
2803  }
2804 
2805  llvm_unreachable("invalid phase in ConstructPhaseAction");
2806 }
2807 
2809  llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
2810 
2811  Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
2812 
2813  // It is an error to provide a -o option if we are making multiple output
2814  // files.
2815  if (FinalOutput) {
2816  unsigned NumOutputs = 0;
2817  for (const Action *A : C.getActions())
2818  if (A->getType() != types::TY_Nothing)
2819  ++NumOutputs;
2820 
2821  if (NumOutputs > 1) {
2822  Diag(clang::diag::err_drv_output_argument_with_multiple_files);
2823  FinalOutput = nullptr;
2824  }
2825  }
2826 
2827  // Collect the list of architectures.
2828  llvm::StringSet<> ArchNames;
2829  if (C.getDefaultToolChain().getTriple().isOSBinFormatMachO())
2830  for (const Arg *A : C.getArgs())
2831  if (A->getOption().matches(options::OPT_arch))
2832  ArchNames.insert(A->getValue());
2833 
2834  // Set of (Action, canonical ToolChain triple) pairs we've built jobs for.
2835  std::map<std::pair<const Action *, std::string>, InputInfo> CachedResults;
2836  for (Action *A : C.getActions()) {
2837  // If we are linking an image for multiple archs then the linker wants
2838  // -arch_multiple and -final_output <final image name>. Unfortunately, this
2839  // doesn't fit in cleanly because we have to pass this information down.
2840  //
2841  // FIXME: This is a hack; find a cleaner way to integrate this into the
2842  // process.
2843  const char *LinkingOutput = nullptr;
2844  if (isa<LipoJobAction>(A)) {
2845  if (FinalOutput)
2846  LinkingOutput = FinalOutput->getValue();
2847  else
2848  LinkingOutput = getDefaultImageName();
2849  }
2850 
2852  /*BoundArch*/ StringRef(),
2853  /*AtTopLevel*/ true,
2854  /*MultipleArchs*/ ArchNames.size() > 1,
2855  /*LinkingOutput*/ LinkingOutput, CachedResults,
2856  /*TargetDeviceOffloadKind*/ Action::OFK_None);
2857  }
2858 
2859  // If the user passed -Qunused-arguments or there were errors, don't warn
2860  // about any unused arguments.
2861  if (Diags.hasErrorOccurred() ||
2862  C.getArgs().hasArg(options::OPT_Qunused_arguments))
2863  return;
2864 
2865  // Claim -### here.
2866  (void)C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
2867 
2868  // Claim --driver-mode, --rsp-quoting, it was handled earlier.
2869  (void)C.getArgs().hasArg(options::OPT_driver_mode);
2870  (void)C.getArgs().hasArg(options::OPT_rsp_quoting);
2871 
2872  for (Arg *A : C.getArgs()) {
2873  // FIXME: It would be nice to be able to send the argument to the
2874  // DiagnosticsEngine, so that extra values, position, and so on could be
2875  // printed.
2876  if (!A->isClaimed()) {
2877  if (A->getOption().hasFlag(options::NoArgumentUnused))
2878  continue;
2879 
2880  // Suppress the warning automatically if this is just a flag, and it is an
2881  // instance of an argument we already claimed.
2882  const Option &Opt = A->getOption();
2883  if (Opt.getKind() == Option::FlagClass) {
2884  bool DuplicateClaimed = false;
2885 
2886  for (const Arg *AA : C.getArgs().filtered(&Opt)) {
2887  if (AA->isClaimed()) {
2888  DuplicateClaimed = true;
2889  break;
2890  }
2891  }
2892 
2893  if (DuplicateClaimed)
2894  continue;
2895  }
2896 
2897  // In clang-cl, don't mention unknown arguments here since they have
2898  // already been warned about.
2899  if (!IsCLMode() || !A->getOption().matches(options::OPT_UNKNOWN))
2900  Diag(clang::diag::warn_drv_unused_argument)
2901  << A->getAsString(C.getArgs());
2902  }
2903  }
2904 }
2905 
2906 namespace {
2907 /// Utility class to control the collapse of dependent actions and select the
2908 /// tools accordingly.
2909 class ToolSelector final {
2910  /// The tool chain this selector refers to.
2911  const ToolChain &TC;
2912 
2913  /// The compilation this selector refers to.
2914  const Compilation &C;
2915 
2916  /// The base action this selector refers to.
2917  const JobAction *BaseAction;
2918 
2919  /// Set to true if the current toolchain refers to host actions.
2920  bool IsHostSelector;
2921 
2922  /// Set to true if save-temps and embed-bitcode functionalities are active.
2923  bool SaveTemps;
2924  bool EmbedBitcode;
2925 
2926  /// Get previous dependent action or null if that does not exist. If
2927  /// \a CanBeCollapsed is false, that action must be legal to collapse or
2928  /// null will be returned.
2929  const JobAction *getPrevDependentAction(const ActionList &Inputs,
2930  ActionList &SavedOffloadAction,
2931  bool CanBeCollapsed = true) {
2932  // An option can be collapsed only if it has a single input.
2933  if (Inputs.size() != 1)
2934  return nullptr;
2935 
2936  Action *CurAction = *Inputs.begin();
2937  if (CanBeCollapsed &&
2939  return nullptr;
2940 
2941  // If the input action is an offload action. Look through it and save any
2942  // offload action that can be dropped in the event of a collapse.
2943  if (auto *OA = dyn_cast<OffloadAction>(CurAction)) {
2944  // If the dependent action is a device action, we will attempt to collapse
2945  // only with other device actions. Otherwise, we would do the same but
2946  // with host actions only.
2947  if (!IsHostSelector) {
2948  if (OA->hasSingleDeviceDependence(/*DoNotConsiderHostActions=*/true)) {
2949  CurAction =
2950  OA->getSingleDeviceDependence(/*DoNotConsiderHostActions=*/true);
2951  if (CanBeCollapsed &&
2953  return nullptr;
2954  SavedOffloadAction.push_back(OA);
2955  return dyn_cast<JobAction>(CurAction);
2956  }
2957  } else if (OA->hasHostDependence()) {
2958  CurAction = OA->getHostDependence();
2959  if (CanBeCollapsed &&
2961  return nullptr;
2962  SavedOffloadAction.push_back(OA);
2963  return dyn_cast<JobAction>(CurAction);
2964  }
2965  return nullptr;
2966  }
2967 
2968  return dyn_cast<JobAction>(CurAction);
2969  }
2970 
2971  /// Return true if an assemble action can be collapsed.
2972  bool canCollapseAssembleAction() const {
2973  return TC.useIntegratedAs() && !SaveTemps &&
2974  !C.getArgs().hasArg(options::OPT_via_file_asm) &&
2975  !C.getArgs().hasArg(options::OPT__SLASH_FA) &&
2976  !C.getArgs().hasArg(options::OPT__SLASH_Fa);
2977  }
2978 
2979  /// Return true if a preprocessor action can be collapsed.
2980  bool canCollapsePreprocessorAction() const {
2981  return !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
2982  !C.getArgs().hasArg(options::OPT_traditional_cpp) && !SaveTemps &&
2983  !C.getArgs().hasArg(options::OPT_rewrite_objc);
2984  }
2985 
2986  /// Struct that relates an action with the offload actions that would be
2987  /// collapsed with it.
2988  struct JobActionInfo final {
2989  /// The action this info refers to.
2990  const JobAction *JA = nullptr;
2991  /// The offload actions we need to take care off if this action is
2992  /// collapsed.
2993  ActionList SavedOffloadAction;
2994  };
2995 
2996  /// Append collapsed offload actions from the give nnumber of elements in the
2997  /// action info array.
2998  static void AppendCollapsedOffloadAction(ActionList &CollapsedOffloadAction,
2999  ArrayRef<JobActionInfo> &ActionInfo,
3000  unsigned ElementNum) {
3001  assert(ElementNum <= ActionInfo.size() && "Invalid number of elements.");
3002  for (unsigned I = 0; I < ElementNum; ++I)
3003  CollapsedOffloadAction.append(ActionInfo[I].SavedOffloadAction.begin(),
3004  ActionInfo[I].SavedOffloadAction.end());
3005  }
3006 
3007  /// Functions that attempt to perform the combining. They detect if that is
3008  /// legal, and if so they update the inputs \a Inputs and the offload action
3009  /// that were collapsed in \a CollapsedOffloadAction. A tool that deals with
3010  /// the combined action is returned. If the combining is not legal or if the
3011  /// tool does not exist, null is returned.
3012  /// Currently three kinds of collapsing are supported:
3013  /// - Assemble + Backend + Compile;
3014  /// - Assemble + Backend ;
3015  /// - Backend + Compile.
3016  const Tool *
3017  combineAssembleBackendCompile(ArrayRef<JobActionInfo> ActionInfo,
3018  const ActionList *&Inputs,
3019  ActionList &CollapsedOffloadAction) {
3020  if (ActionInfo.size() < 3 || !canCollapseAssembleAction())
3021  return nullptr;
3022  auto *AJ = dyn_cast<AssembleJobAction>(ActionInfo[0].JA);
3023  auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[1].JA);
3024  auto *CJ = dyn_cast<CompileJobAction>(ActionInfo[2].JA);
3025  if (!AJ || !BJ || !CJ)
3026  return nullptr;
3027 
3028  // Get compiler tool.
3029  const Tool *T = TC.SelectTool(*CJ);
3030  if (!T)
3031  return nullptr;
3032 
3033  // When using -fembed-bitcode, it is required to have the same tool (clang)
3034  // for both CompilerJA and BackendJA. Otherwise, combine two stages.
3035  if (EmbedBitcode) {
3036  const Tool *BT = TC.SelectTool(*BJ);
3037  if (BT == T)
3038  return nullptr;
3039  }
3040 
3041  if (!T->hasIntegratedAssembler())
3042  return nullptr;
3043 
3044  Inputs = &CJ->getInputs();
3045  AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3046  /*NumElements=*/3);
3047  return T;
3048  }
3049  const Tool *combineAssembleBackend(ArrayRef<JobActionInfo> ActionInfo,
3050  const ActionList *&Inputs,
3051  ActionList &CollapsedOffloadAction) {
3052  if (ActionInfo.size() < 2 || !canCollapseAssembleAction())
3053  return nullptr;
3054  auto *AJ = dyn_cast<AssembleJobAction>(ActionInfo[0].JA);
3055  auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[1].JA);
3056  if (!AJ || !BJ)
3057  return nullptr;
3058 
3059  // Retrieve the compile job, backend action must always be preceded by one.
3060  ActionList CompileJobOffloadActions;
3061  auto *CJ = getPrevDependentAction(BJ->getInputs(), CompileJobOffloadActions,
3062  /*CanBeCollapsed=*/false);
3063  if (!AJ || !BJ || !CJ)
3064  return nullptr;
3065 
3066  assert(isa<CompileJobAction>(CJ) &&
3067  "Expecting compile job preceding backend job.");
3068 
3069  // Get compiler tool.
3070  const Tool *T = TC.SelectTool(*CJ);
3071  if (!T)
3072  return nullptr;
3073 
3074  if (!T->hasIntegratedAssembler())
3075  return nullptr;
3076 
3077  Inputs = &BJ->getInputs();
3078  AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3079  /*NumElements=*/2);
3080  return T;
3081  }
3082  const Tool *combineBackendCompile(ArrayRef<JobActionInfo> ActionInfo,
3083  const ActionList *&Inputs,
3084  ActionList &CollapsedOffloadAction) {
3085  if (ActionInfo.size() < 2 || !canCollapsePreprocessorAction())
3086  return nullptr;
3087  auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[0].JA);
3088  auto *CJ = dyn_cast<CompileJobAction>(ActionInfo[1].JA);
3089  if (!BJ || !CJ)
3090  return nullptr;
3091 
3092  // Get compiler tool.
3093  const Tool *T = TC.SelectTool(*CJ);
3094  if (!T)
3095  return nullptr;
3096 
3097  if (T->canEmitIR() && (SaveTemps || EmbedBitcode))
3098  return nullptr;
3099 
3100  Inputs = &CJ->getInputs();
3101  AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3102  /*NumElements=*/2);
3103  return T;
3104  }
3105 
3106  /// Updates the inputs if the obtained tool supports combining with
3107  /// preprocessor action, and the current input is indeed a preprocessor
3108  /// action. If combining results in the collapse of offloading actions, those
3109  /// are appended to \a CollapsedOffloadAction.
3110  void combineWithPreprocessor(const Tool *T, const ActionList *&Inputs,
3111  ActionList &CollapsedOffloadAction) {
3112  if (!T || !canCollapsePreprocessorAction() || !T->hasIntegratedCPP())
3113  return;
3114 
3115  // Attempt to get a preprocessor action dependence.
3116  ActionList PreprocessJobOffloadActions;
3117  auto *PJ = getPrevDependentAction(*Inputs, PreprocessJobOffloadActions);
3118  if (!PJ || !isa<PreprocessJobAction>(PJ))
3119  return;
3120 
3121  // This is legal to combine. Append any offload action we found and set the
3122  // current inputs to preprocessor inputs.
3123  CollapsedOffloadAction.append(PreprocessJobOffloadActions.begin(),
3124  PreprocessJobOffloadActions.end());
3125  Inputs = &PJ->getInputs();
3126  }
3127 
3128 public:
3129  ToolSelector(const JobAction *BaseAction, const ToolChain &TC,
3130  const Compilation &C, bool SaveTemps, bool EmbedBitcode)
3131  : TC(TC), C(C), BaseAction(BaseAction), SaveTemps(SaveTemps),
3132  EmbedBitcode(EmbedBitcode) {
3133  assert(BaseAction && "Invalid base action.");
3134  IsHostSelector = BaseAction->getOffloadingDeviceKind() == Action::OFK_None;
3135  }
3136 
3137  /// Check if a chain of actions can be combined and return the tool that can
3138  /// handle the combination of actions. The pointer to the current inputs \a
3139  /// Inputs and the list of offload actions \a CollapsedOffloadActions
3140  /// connected to collapsed actions are updated accordingly. The latter enables
3141  /// the caller of the selector to process them afterwards instead of just
3142  /// dropping them. If no suitable tool is found, null will be returned.
3143  const Tool *getTool(const ActionList *&Inputs,
3144  ActionList &CollapsedOffloadAction) {
3145  //
3146  // Get the largest chain of actions that we could combine.
3147  //
3148 
3149  SmallVector<JobActionInfo, 5> ActionChain(1);
3150  ActionChain.back().JA = BaseAction;
3151  while (ActionChain.back().JA) {
3152  const Action *CurAction = ActionChain.back().JA;
3153 
3154  // Grow the chain by one element.
3155  ActionChain.resize(ActionChain.size() + 1);
3156  JobActionInfo &AI = ActionChain.back();
3157 
3158  // Attempt to fill it with the
3159  AI.JA =
3160  getPrevDependentAction(CurAction->getInputs(), AI.SavedOffloadAction);
3161  }
3162 
3163  // Pop the last action info as it could not be filled.
3164  ActionChain.pop_back();
3165 
3166  //
3167  // Attempt to combine actions. If all combining attempts failed, just return
3168  // the tool of the provided action. At the end we attempt to combine the
3169  // action with any preprocessor action it may depend on.
3170  //
3171 
3172  const Tool *T = combineAssembleBackendCompile(ActionChain, Inputs,
3173  CollapsedOffloadAction);
3174  if (!T)
3175  T = combineAssembleBackend(ActionChain, Inputs, CollapsedOffloadAction);
3176  if (!T)
3177  T = combineBackendCompile(ActionChain, Inputs, CollapsedOffloadAction);
3178  if (!T) {
3179  Inputs = &BaseAction->getInputs();
3180  T = TC.SelectTool(*BaseAction);
3181  }
3182 
3183  combineWithPreprocessor(T, Inputs, CollapsedOffloadAction);
3184  return T;
3185  }
3186 };
3187 }
3188 
3189 /// Return a string that uniquely identifies the result of a job. The bound arch
3190 /// is not necessarily represented in the toolchain's triple -- for example,
3191 /// armv7 and armv7s both map to the same triple -- so we need both in our map.
3192 /// Also, we need to add the offloading device kind, as the same tool chain can
3193 /// be used for host and device for some programming models, e.g. OpenMP.
3194 static std::string GetTriplePlusArchString(const ToolChain *TC,
3195  StringRef BoundArch,
3196  Action::OffloadKind OffloadKind) {
3197  std::string TriplePlusArch = TC->getTriple().normalize();
3198  if (!BoundArch.empty()) {
3199  TriplePlusArch += "-";
3200  TriplePlusArch += BoundArch;
3201  }
3202  TriplePlusArch += "-";
3203  TriplePlusArch += Action::GetOffloadKindName(OffloadKind);
3204  return TriplePlusArch;
3205 }
3206 
3208  Compilation &C, const Action *A, const ToolChain *TC, StringRef BoundArch,
3209  bool AtTopLevel, bool MultipleArchs, const char *LinkingOutput,
3210  std::map<std::pair<const Action *, std::string>, InputInfo> &CachedResults,
3211  Action::OffloadKind TargetDeviceOffloadKind) const {
3212  std::pair<const Action *, std::string> ActionTC = {
3213  A, GetTriplePlusArchString(TC, BoundArch, TargetDeviceOffloadKind)};
3214  auto CachedResult = CachedResults.find(ActionTC);
3215  if (CachedResult != CachedResults.end()) {
3216  return CachedResult->second;
3217  }
3218  InputInfo Result = BuildJobsForActionNoCache(
3219  C, A, TC, BoundArch, AtTopLevel, MultipleArchs, LinkingOutput,
3220  CachedResults, TargetDeviceOffloadKind);
3221  CachedResults[ActionTC] = Result;
3222  return Result;
3223 }
3224 
3225 InputInfo Driver::BuildJobsForActionNoCache(
3226  Compilation &C, const Action *A, const ToolChain *TC, StringRef BoundArch,
3227  bool AtTopLevel, bool MultipleArchs, const char *LinkingOutput,
3228  std::map<std::pair<const Action *, std::string>, InputInfo> &CachedResults,
3229  Action::OffloadKind TargetDeviceOffloadKind) const {
3230  llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
3231 
3232  InputInfoList OffloadDependencesInputInfo;
3233  bool BuildingForOffloadDevice = TargetDeviceOffloadKind != Action::OFK_None;
3234  if (const OffloadAction *OA = dyn_cast<OffloadAction>(A)) {
3235  // The 'Darwin' toolchain is initialized only when its arguments are
3236  // computed. Get the default arguments for OFK_None to ensure that
3237  // initialization is performed before processing the offload action.
3238  // FIXME: Remove when darwin's toolchain is initialized during construction.
3239  C.getArgsForToolChain(TC, BoundArch, Action::OFK_None);
3240 
3241  // The offload action is expected to be used in four different situations.
3242  //
3243  // a) Set a toolchain/architecture/kind for a host action:
3244  // Host Action 1 -> OffloadAction -> Host Action 2
3245  //
3246  // b) Set a toolchain/architecture/kind for a device action;
3247  // Device Action 1 -> OffloadAction -> Device Action 2
3248  //
3249  // c) Specify a device dependence to a host action;
3250  // Device Action 1 _
3251  // \
3252  // Host Action 1 ---> OffloadAction -> Host Action 2
3253  //
3254  // d) Specify a host dependence to a device action.
3255  // Host Action 1 _
3256  // \
3257  // Device Action 1 ---> OffloadAction -> Device Action 2
3258  //
3259  // For a) and b), we just return the job generated for the dependence. For
3260  // c) and d) we override the current action with the host/device dependence
3261  // if the current toolchain is host/device and set the offload dependences
3262  // info with the jobs obtained from the device/host dependence(s).
3263 
3264  // If there is a single device option, just generate the job for it.
3265  if (OA->hasSingleDeviceDependence()) {
3266  InputInfo DevA;
3267  OA->doOnEachDeviceDependence([&](Action *DepA, const ToolChain *DepTC,
3268  const char *DepBoundArch) {
3269  DevA =
3270  BuildJobsForAction(C, DepA, DepTC, DepBoundArch, AtTopLevel,
3271  /*MultipleArchs*/ !!DepBoundArch, LinkingOutput,
3272  CachedResults, DepA->getOffloadingDeviceKind());
3273  });
3274  return DevA;
3275  }
3276 
3277  // If 'Action 2' is host, we generate jobs for the device dependences and
3278  // override the current action with the host dependence. Otherwise, we
3279  // generate the host dependences and override the action with the device
3280  // dependence. The dependences can't therefore be a top-level action.
3281  OA->doOnEachDependence(
3282  /*IsHostDependence=*/BuildingForOffloadDevice,
3283  [&](Action *DepA, const ToolChain *DepTC, const char *DepBoundArch) {
3284  OffloadDependencesInputInfo.push_back(BuildJobsForAction(
3285  C, DepA, DepTC, DepBoundArch, /*AtTopLevel=*/false,
3286  /*MultipleArchs*/ !!DepBoundArch, LinkingOutput, CachedResults,
3287  DepA->getOffloadingDeviceKind()));
3288  });
3289 
3290  A = BuildingForOffloadDevice
3291  ? OA->getSingleDeviceDependence(/*DoNotConsiderHostActions=*/true)
3292  : OA->getHostDependence();
3293  }
3294 
3295  if (const InputAction *IA = dyn_cast<InputAction>(A)) {
3296  // FIXME: It would be nice to not claim this here; maybe the old scheme of
3297  // just using Args was better?
3298  const Arg &Input = IA->getInputArg();
3299  Input.claim();
3300  if (Input.getOption().matches(options::OPT_INPUT)) {
3301  const char *Name = Input.getValue();
3302  return InputInfo(A, Name, /* BaseInput = */ Name);
3303  }
3304  return InputInfo(A, &Input, /* BaseInput = */ "");
3305  }
3306 
3307  if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
3308  const ToolChain *TC;
3309  StringRef ArchName = BAA->getArchName();
3310 
3311  if (!ArchName.empty())
3312  TC = &getToolChain(C.getArgs(),
3313  computeTargetTriple(*this, DefaultTargetTriple,
3314  C.getArgs(), ArchName));
3315  else
3316  TC = &C.getDefaultToolChain();
3317 
3318  return BuildJobsForAction(C, *BAA->input_begin(), TC, ArchName, AtTopLevel,
3319  MultipleArchs, LinkingOutput, CachedResults,
3320  TargetDeviceOffloadKind);
3321  }
3322 
3323 
3324  const ActionList *Inputs = &A->getInputs();
3325 
3326  const JobAction *JA = cast<JobAction>(A);
3327  ActionList CollapsedOffloadActions;
3328 
3329  ToolSelector TS(JA, *TC, C, isSaveTempsEnabled(),
3331  const Tool *T = TS.getTool(Inputs, CollapsedOffloadActions);
3332 
3333  if (!T)
3334  return InputInfo();
3335 
3336  // If we've collapsed action list that contained OffloadAction we
3337  // need to build jobs for host/device-side inputs it may have held.
3338  for (const auto *OA : CollapsedOffloadActions)
3339  cast<OffloadAction>(OA)->doOnEachDependence(
3340  /*IsHostDependence=*/BuildingForOffloadDevice,
3341  [&](Action *DepA, const ToolChain *DepTC, const char *DepBoundArch) {
3342  OffloadDependencesInputInfo.push_back(BuildJobsForAction(
3343  C, DepA, DepTC, DepBoundArch, /* AtTopLevel */ false,
3344  /*MultipleArchs=*/!!DepBoundArch, LinkingOutput, CachedResults,
3345  DepA->getOffloadingDeviceKind()));
3346  });
3347 
3348  // Only use pipes when there is exactly one input.
3349  InputInfoList InputInfos;
3350  for (const Action *Input : *Inputs) {
3351  // Treat dsymutil and verify sub-jobs as being at the top-level too, they
3352  // shouldn't get temporary output names.
3353  // FIXME: Clean this up.
3354  bool SubJobAtTopLevel =
3355  AtTopLevel && (isa<DsymutilJobAction>(A) || isa<VerifyJobAction>(A));
3356  InputInfos.push_back(BuildJobsForAction(
3357  C, Input, TC, BoundArch, SubJobAtTopLevel, MultipleArchs, LinkingOutput,
3358  CachedResults, A->getOffloadingDeviceKind()));
3359  }
3360 
3361  // Always use the first input as the base input.
3362  const char *BaseInput = InputInfos[0].getBaseInput();
3363 
3364  // ... except dsymutil actions, which use their actual input as the base
3365  // input.
3366  if (JA->getType() == types::TY_dSYM)
3367  BaseInput = InputInfos[0].getFilename();
3368 
3369  // Append outputs of offload device jobs to the input list
3370  if (!OffloadDependencesInputInfo.empty())
3371  InputInfos.append(OffloadDependencesInputInfo.begin(),
3372  OffloadDependencesInputInfo.end());
3373 
3374  // Set the effective triple of the toolchain for the duration of this job.
3375  llvm::Triple EffectiveTriple;
3376  const ToolChain &ToolTC = T->getToolChain();
3377  const ArgList &Args =
3378  C.getArgsForToolChain(TC, BoundArch, A->getOffloadingDeviceKind());
3379  if (InputInfos.size() != 1) {
3380  EffectiveTriple = llvm::Triple(ToolTC.ComputeEffectiveClangTriple(Args));
3381  } else {
3382  // Pass along the input type if it can be unambiguously determined.
3383  EffectiveTriple = llvm::Triple(
3384  ToolTC.ComputeEffectiveClangTriple(Args, InputInfos[0].getType()));
3385  }
3386  RegisterEffectiveTriple TripleRAII(ToolTC, EffectiveTriple);
3387 
3388  // Determine the place to write output to, if any.
3389  InputInfo Result;
3390  InputInfoList UnbundlingResults;
3391  if (auto *UA = dyn_cast<OffloadUnbundlingJobAction>(JA)) {
3392  // If we have an unbundling job, we need to create results for all the
3393  // outputs. We also update the results cache so that other actions using
3394  // this unbundling action can get the right results.
3395  for (auto &UI : UA->getDependentActionsInfo()) {
3396  assert(UI.DependentOffloadKind != Action::OFK_None &&
3397  "Unbundling with no offloading??");
3398 
3399  // Unbundling actions are never at the top level. When we generate the
3400  // offloading prefix, we also do that for the host file because the
3401  // unbundling action does not change the type of the output which can
3402  // cause a overwrite.
3403  std::string OffloadingPrefix = Action::GetOffloadingFileNamePrefix(
3404  UI.DependentOffloadKind,
3405  UI.DependentToolChain->getTriple().normalize(),
3406  /*CreatePrefixForHost=*/true);
3407  auto CurI = InputInfo(
3408  UA, GetNamedOutputPath(C, *UA, BaseInput, UI.DependentBoundArch,
3409  /*AtTopLevel=*/false, MultipleArchs,
3410  OffloadingPrefix),
3411  BaseInput);
3412  // Save the unbundling result.
3413  UnbundlingResults.push_back(CurI);
3414 
3415  // Get the unique string identifier for this dependence and cache the
3416  // result.
3417  CachedResults[{A, GetTriplePlusArchString(
3418  UI.DependentToolChain, BoundArch,
3419  UI.DependentOffloadKind)}] = CurI;
3420  }
3421 
3422  // Now that we have all the results generated, select the one that should be
3423  // returned for the current depending action.
3424  std::pair<const Action *, std::string> ActionTC = {
3425  A, GetTriplePlusArchString(TC, BoundArch, TargetDeviceOffloadKind)};
3426  assert(CachedResults.find(ActionTC) != CachedResults.end() &&
3427  "Result does not exist??");
3428  Result = CachedResults[ActionTC];
3429  } else if (JA->getType() == types::TY_Nothing)
3430  Result = InputInfo(A, BaseInput);
3431  else {
3432  // We only have to generate a prefix for the host if this is not a top-level
3433  // action.
3434  std::string OffloadingPrefix = Action::GetOffloadingFileNamePrefix(
3435  A->getOffloadingDeviceKind(), TC->getTriple().normalize(),
3436  /*CreatePrefixForHost=*/!!A->getOffloadingHostActiveKinds() &&
3437  !AtTopLevel);
3438  Result = InputInfo(A, GetNamedOutputPath(C, *JA, BaseInput, BoundArch,
3439  AtTopLevel, MultipleArchs,
3440  OffloadingPrefix),
3441  BaseInput);
3442  }
3443 
3445  llvm::errs() << "# \"" << T->getToolChain().getTripleString() << '"'
3446  << " - \"" << T->getName() << "\", inputs: [";
3447  for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
3448  llvm::errs() << InputInfos[i].getAsString();
3449  if (i + 1 != e)
3450  llvm::errs() << ", ";
3451  }
3452  if (UnbundlingResults.empty())
3453  llvm::errs() << "], output: " << Result.getAsString() << "\n";
3454  else {
3455  llvm::errs() << "], outputs: [";
3456  for (unsigned i = 0, e = UnbundlingResults.size(); i != e; ++i) {
3457  llvm::errs() << UnbundlingResults[i].getAsString();
3458  if (i + 1 != e)
3459  llvm::errs() << ", ";
3460  }
3461  llvm::errs() << "] \n";
3462  }
3463  } else {
3464  if (UnbundlingResults.empty())
3465  T->ConstructJob(
3466  C, *JA, Result, InputInfos,
3467  C.getArgsForToolChain(TC, BoundArch, JA->getOffloadingDeviceKind()),
3468  LinkingOutput);
3469  else
3471  C, *JA, UnbundlingResults, InputInfos,
3472  C.getArgsForToolChain(TC, BoundArch, JA->getOffloadingDeviceKind()),
3473  LinkingOutput);
3474  }
3475  return Result;
3476 }
3477 
3478 const char *Driver::getDefaultImageName() const {
3479  llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple));
3480  return Target.isOSWindows() ? "a.exe" : "a.out";
3481 }
3482 
3483 /// \brief Create output filename based on ArgValue, which could either be a
3484 /// full filename, filename without extension, or a directory. If ArgValue
3485 /// does not provide a filename, then use BaseName, and use the extension
3486 /// suitable for FileType.
3487 static const char *MakeCLOutputFilename(const ArgList &Args, StringRef ArgValue,
3488  StringRef BaseName,
3489  types::ID FileType) {
3490  SmallString<128> Filename = ArgValue;
3491 
3492  if (ArgValue.empty()) {
3493  // If the argument is empty, output to BaseName in the current dir.
3494  Filename = BaseName;
3495  } else if (llvm::sys::path::is_separator(Filename.back())) {
3496  // If the argument is a directory, output to BaseName in that dir.
3497  llvm::sys::path::append(Filename, BaseName);
3498  }
3499 
3500  if (!llvm::sys::path::has_extension(ArgValue)) {
3501  // If the argument didn't provide an extension, then set it.
3502  const char *Extension = types::getTypeTempSuffix(FileType, true);
3503 
3504  if (FileType == types::TY_Image &&
3505  Args.hasArg(options::OPT__SLASH_LD, options::OPT__SLASH_LDd)) {
3506  // The output file is a dll.
3507  Extension = "dll";
3508  }
3509 
3510  llvm::sys::path::replace_extension(Filename, Extension);
3511  }
3512 
3513  return Args.MakeArgString(Filename.c_str());
3514 }
3515 
3517  const char *BaseInput,
3518  StringRef BoundArch, bool AtTopLevel,
3519  bool MultipleArchs,
3520  StringRef OffloadingPrefix) const {
3521  llvm::PrettyStackTraceString CrashInfo("Computing output path");
3522  // Output to a user requested destination?
3523  if (AtTopLevel && !isa<DsymutilJobAction>(JA) && !isa<VerifyJobAction>(JA)) {
3524  if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
3525  return C.addResultFile(FinalOutput->getValue(), &JA);
3526  }
3527 
3528  // For /P, preprocess to file named after BaseInput.
3529  if (C.getArgs().hasArg(options::OPT__SLASH_P)) {
3530  assert(AtTopLevel && isa<PreprocessJobAction>(JA));
3531  StringRef BaseName = llvm::sys::path::filename(BaseInput);
3532  StringRef NameArg;
3533  if (Arg *A = C.getArgs().getLastArg(options::OPT__SLASH_Fi))
3534  NameArg = A->getValue();
3535  return C.addResultFile(
3536  MakeCLOutputFilename(C.getArgs(), NameArg, BaseName, types::TY_PP_C),
3537  &JA);
3538  }
3539 
3540  // Default to writing to stdout?
3541  if (AtTopLevel && !CCGenDiagnostics &&
3542  (isa<PreprocessJobAction>(JA) || JA.getType() == types::TY_ModuleFile))
3543  return "-";
3544 
3545  // Is this the assembly listing for /FA?
3546  if (JA.getType() == types::TY_PP_Asm &&
3547  (C.getArgs().hasArg(options::OPT__SLASH_FA) ||
3548  C.getArgs().hasArg(options::OPT__SLASH_Fa))) {
3549  // Use /Fa and the input filename to determine the asm file name.
3550  StringRef BaseName = llvm::sys::path::filename(BaseInput);
3551  StringRef FaValue = C.getArgs().getLastArgValue(options::OPT__SLASH_Fa);
3552  return C.addResultFile(
3553  MakeCLOutputFilename(C.getArgs(), FaValue, BaseName, JA.getType()),
3554  &JA);
3555  }
3556 
3557  // Output to a temporary file?
3558  if ((!AtTopLevel && !isSaveTempsEnabled() &&
3559  !C.getArgs().hasArg(options::OPT__SLASH_Fo)) ||
3560  CCGenDiagnostics) {
3561  StringRef Name = llvm::sys::path::filename(BaseInput);
3562  std::pair<StringRef, StringRef> Split = Name.split('.');
3563  std::string TmpName = GetTemporaryPath(
3564  Split.first, types::getTypeTempSuffix(JA.getType(), IsCLMode()));
3565  return C.addTempFile(C.getArgs().MakeArgString(TmpName));
3566  }
3567 
3568  SmallString<128> BasePath(BaseInput);
3569  StringRef BaseName;
3570 
3571  // Dsymutil actions should use the full path.
3572  if (isa<DsymutilJobAction>(JA) || isa<VerifyJobAction>(JA))
3573  BaseName = BasePath;
3574  else
3575  BaseName = llvm::sys::path::filename(BasePath);
3576 
3577  // Determine what the derived output name should be.
3578  const char *NamedOutput;
3579 
3580  if ((JA.getType() == types::TY_Object || JA.getType() == types::TY_LTO_BC) &&
3581  C.getArgs().hasArg(options::OPT__SLASH_Fo, options::OPT__SLASH_o)) {
3582  // The /Fo or /o flag decides the object filename.
3583  StringRef Val =
3584  C.getArgs()
3585  .getLastArg(options::OPT__SLASH_Fo, options::OPT__SLASH_o)
3586  ->getValue();
3587  NamedOutput =
3588  MakeCLOutputFilename(C.getArgs(), Val, BaseName, types::TY_Object);
3589  } else if (JA.getType() == types::TY_Image &&
3590  C.getArgs().hasArg(options::OPT__SLASH_Fe,
3591  options::OPT__SLASH_o)) {
3592  // The /Fe or /o flag names the linked file.
3593  StringRef Val =
3594  C.getArgs()
3595  .getLastArg(options::OPT__SLASH_Fe, options::OPT__SLASH_o)
3596  ->getValue();
3597  NamedOutput =
3598  MakeCLOutputFilename(C.getArgs(), Val, BaseName, types::TY_Image);
3599  } else if (JA.getType() == types::TY_Image) {
3600  if (IsCLMode()) {
3601  // clang-cl uses BaseName for the executable name.
3602  NamedOutput =
3603  MakeCLOutputFilename(C.getArgs(), "", BaseName, types::TY_Image);
3604  } else {
3606  Output += OffloadingPrefix;
3607  if (MultipleArchs && !BoundArch.empty()) {
3608  Output += "-";
3609  Output.append(BoundArch);
3610  }
3611  NamedOutput = C.getArgs().MakeArgString(Output.c_str());
3612  }
3613  } else if (JA.getType() == types::TY_PCH && IsCLMode()) {
3614  NamedOutput = C.getArgs().MakeArgString(GetClPchPath(C, BaseName));
3615  } else {
3616  const char *Suffix = types::getTypeTempSuffix(JA.getType(), IsCLMode());
3617  assert(Suffix && "All types used for output should have a suffix.");
3618 
3619  std::string::size_type End = std::string::npos;
3621  End = BaseName.rfind('.');
3622  SmallString<128> Suffixed(BaseName.substr(0, End));
3623  Suffixed += OffloadingPrefix;
3624  if (MultipleArchs && !BoundArch.empty()) {
3625  Suffixed += "-";
3626  Suffixed.append(BoundArch);
3627  }
3628  // When using both -save-temps and -emit-llvm, use a ".tmp.bc" suffix for
3629  // the unoptimized bitcode so that it does not get overwritten by the ".bc"
3630  // optimized bitcode output.
3631  if (!AtTopLevel && C.getArgs().hasArg(options::OPT_emit_llvm) &&
3632  JA.getType() == types::TY_LLVM_BC)
3633  Suffixed += ".tmp";
3634  Suffixed += '.';
3635  Suffixed += Suffix;
3636  NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
3637  }
3638 
3639  // Prepend object file path if -save-temps=obj
3640  if (!AtTopLevel && isSaveTempsObj() && C.getArgs().hasArg(options::OPT_o) &&
3641  JA.getType() != types::TY_PCH) {
3642  Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
3643  SmallString<128> TempPath(FinalOutput->getValue());
3644  llvm::sys::path::remove_filename(TempPath);
3645  StringRef OutputFileName = llvm::sys::path::filename(NamedOutput);
3646  llvm::sys::path::append(TempPath, OutputFileName);
3647  NamedOutput = C.getArgs().MakeArgString(TempPath.c_str());
3648  }
3649 
3650  // If we're saving temps and the temp file conflicts with the input file,
3651  // then avoid overwriting input file.
3652  if (!AtTopLevel && isSaveTempsEnabled() && NamedOutput == BaseName) {
3653  bool SameFile = false;
3654  SmallString<256> Result;
3655  llvm::sys::fs::current_path(Result);
3656  llvm::sys::path::append(Result, BaseName);
3657  llvm::sys::fs::equivalent(BaseInput, Result.c_str(), SameFile);
3658  // Must share the same path to conflict.
3659  if (SameFile) {
3660  StringRef Name = llvm::sys::path::filename(BaseInput);
3661  std::pair<StringRef, StringRef> Split = Name.split('.');
3662  std::string TmpName = GetTemporaryPath(
3663  Split.first, types::getTypeTempSuffix(JA.getType(), IsCLMode()));
3664  return C.addTempFile(C.getArgs().MakeArgString(TmpName));
3665  }
3666  }
3667 
3668  // As an annoying special case, PCH generation doesn't strip the pathname.
3669  if (JA.getType() == types::TY_PCH && !IsCLMode()) {
3670  llvm::sys::path::remove_filename(BasePath);
3671  if (BasePath.empty())
3672  BasePath = NamedOutput;
3673  else
3674  llvm::sys::path::append(BasePath, NamedOutput);
3675  return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()), &JA);
3676  } else {
3677  return C.addResultFile(NamedOutput, &JA);
3678  }
3679 }
3680 
3681 std::string Driver::GetFilePath(StringRef Name, const ToolChain &TC) const {
3682  // Respect a limited subset of the '-Bprefix' functionality in GCC by
3683  // attempting to use this prefix when looking for file paths.
3684  for (const std::string &Dir : PrefixDirs) {
3685  if (Dir.empty())
3686  continue;
3687  SmallString<128> P(Dir[0] == '=' ? SysRoot + Dir.substr(1) : Dir);
3688  llvm::sys::path::append(P, Name);
3689  if (llvm::sys::fs::exists(Twine(P)))
3690  return P.str();
3691  }
3692 
3694  llvm::sys::path::append(R, Name);
3695  if (llvm::sys::fs::exists(Twine(R)))
3696  return R.str();
3697 
3699  llvm::sys::path::append(P, Name);
3700  if (llvm::sys::fs::exists(Twine(P)))
3701  return P.str();
3702 
3703  for (const std::string &Dir : TC.getFilePaths()) {
3704  if (Dir.empty())
3705  continue;
3706  SmallString<128> P(Dir[0] == '=' ? SysRoot + Dir.substr(1) : Dir);
3707  llvm::sys::path::append(P, Name);
3708  if (llvm::sys::fs::exists(Twine(P)))
3709  return P.str();
3710  }
3711 
3712  return Name;
3713 }
3714 
3715 void Driver::generatePrefixedToolNames(
3716  StringRef Tool, const ToolChain &TC,
3717  SmallVectorImpl<std::string> &Names) const {
3718  // FIXME: Needs a better variable than DefaultTargetTriple
3719  Names.emplace_back((DefaultTargetTriple + "-" + Tool).str());
3720  Names.emplace_back(Tool);
3721 
3722  // Allow the discovery of tools prefixed with LLVM's default target triple.
3723  std::string LLVMDefaultTargetTriple = llvm::sys::getDefaultTargetTriple();
3724  if (LLVMDefaultTargetTriple != DefaultTargetTriple)
3725  Names.emplace_back((LLVMDefaultTargetTriple + "-" + Tool).str());
3726 }
3727 
3729  ArrayRef<std::string> Names) {
3730  for (const auto &Name : Names) {
3731  llvm::sys::path::append(Dir, Name);
3732  if (llvm::sys::fs::can_execute(Twine(Dir)))
3733  return true;
3734  llvm::sys::path::remove_filename(Dir);
3735  }
3736  return false;
3737 }
3738 
3739 std::string Driver::GetProgramPath(StringRef Name, const ToolChain &TC) const {
3740  SmallVector<std::string, 2> TargetSpecificExecutables;
3741  generatePrefixedToolNames(Name, TC, TargetSpecificExecutables);
3742 
3743  // Respect a limited subset of the '-Bprefix' functionality in GCC by
3744  // attempting to use this prefix when looking for program paths.
3745  for (const auto &PrefixDir : PrefixDirs) {
3746  if (llvm::sys::fs::is_directory(PrefixDir)) {
3747  SmallString<128> P(PrefixDir);
3748  if (ScanDirForExecutable(P, TargetSpecificExecutables))
3749  return P.str();
3750  } else {
3751  SmallString<128> P((PrefixDir + Name).str());
3752  if (llvm::sys::fs::can_execute(Twine(P)))
3753  return P.str();
3754  }
3755  }
3756 
3757  const ToolChain::path_list &List = TC.getProgramPaths();
3758  for (const auto &Path : List) {
3759  SmallString<128> P(Path);
3760  if (ScanDirForExecutable(P, TargetSpecificExecutables))
3761  return P.str();
3762  }
3763 
3764  // If all else failed, search the path.
3765  for (const auto &TargetSpecificExecutable : TargetSpecificExecutables)
3766  if (llvm::ErrorOr<std::string> P =
3767  llvm::sys::findProgramByName(TargetSpecificExecutable))
3768  return *P;
3769 
3770  return Name;
3771 }
3772 
3773 std::string Driver::GetTemporaryPath(StringRef Prefix, StringRef Suffix) const {
3774  SmallString<128> Path;
3775  std::error_code EC = llvm::sys::fs::createTemporaryFile(Prefix, Suffix, Path);
3776  if (EC) {
3777  Diag(clang::diag::err_unable_to_make_temp) << EC.message();
3778  return "";
3779  }
3780 
3781  return Path.str();
3782 }
3783 
3784 std::string Driver::GetClPchPath(Compilation &C, StringRef BaseName) const {
3785  SmallString<128> Output;
3786  if (Arg *FpArg = C.getArgs().getLastArg(options::OPT__SLASH_Fp)) {
3787  // FIXME: If anybody needs it, implement this obscure rule:
3788  // "If you specify a directory without a file name, the default file name
3789  // is VCx0.pch., where x is the major version of Visual C++ in use."
3790  Output = FpArg->getValue();
3791 
3792  // "If you do not specify an extension as part of the path name, an
3793  // extension of .pch is assumed. "
3794  if (!llvm::sys::path::has_extension(Output))
3795  Output += ".pch";
3796  } else {
3797  Output = BaseName;
3798  llvm::sys::path::replace_extension(Output, ".pch");
3799  }
3800  return Output.str();
3801 }
3802 
3803 const ToolChain &Driver::getToolChain(const ArgList &Args,
3804  const llvm::Triple &Target) const {
3805 
3806  auto &TC = ToolChains[Target.str()];
3807  if (!TC) {
3808  switch (Target.getOS()) {
3809  case llvm::Triple::Haiku:
3810  TC = llvm::make_unique<toolchains::Haiku>(*this, Target, Args);
3811  break;
3812  case llvm::Triple::Ananas:
3813  TC = llvm::make_unique<toolchains::Ananas>(*this, Target, Args);
3814  break;
3815  case llvm::Triple::CloudABI:
3816  TC = llvm::make_unique<toolchains::CloudABI>(*this, Target, Args);
3817  break;
3818  case llvm::Triple::Darwin:
3819  case llvm::Triple::MacOSX:
3820  case llvm::Triple::IOS:
3821  case llvm::Triple::TvOS:
3822  case llvm::Triple::WatchOS:
3823  TC = llvm::make_unique<toolchains::DarwinClang>(*this, Target, Args);
3824  break;
3825  case llvm::Triple::DragonFly:
3826  TC = llvm::make_unique<toolchains::DragonFly>(*this, Target, Args);
3827  break;
3828  case llvm::Triple::OpenBSD:
3829  TC = llvm::make_unique<toolchains::OpenBSD>(*this, Target, Args);
3830  break;
3831  case llvm::Triple::NetBSD:
3832  TC = llvm::make_unique<toolchains::NetBSD>(*this, Target, Args);
3833  break;
3834  case llvm::Triple::FreeBSD:
3835  TC = llvm::make_unique<toolchains::FreeBSD>(*this, Target, Args);
3836  break;
3837  case llvm::Triple::Minix:
3838  TC = llvm::make_unique<toolchains::Minix>(*this, Target, Args);
3839  break;
3840  case llvm::Triple::Linux:
3841  case llvm::Triple::ELFIAMCU:
3842  if (Target.getArch() == llvm::Triple::hexagon)
3843  TC = llvm::make_unique<toolchains::HexagonToolChain>(*this, Target,
3844  Args);
3845  else if ((Target.getVendor() == llvm::Triple::MipsTechnologies) &&
3846  !Target.hasEnvironment())
3847  TC = llvm::make_unique<toolchains::MipsLLVMToolChain>(*this, Target,
3848  Args);
3849  else
3850  TC = llvm::make_unique<toolchains::Linux>(*this, Target, Args);
3851  break;
3852  case llvm::Triple::NaCl:
3853  TC = llvm::make_unique<toolchains::NaClToolChain>(*this, Target, Args);
3854  break;
3855  case llvm::Triple::Fuchsia:
3856  TC = llvm::make_unique<toolchains::Fuchsia>(*this, Target, Args);
3857  break;
3858  case llvm::Triple::Solaris:
3859  TC = llvm::make_unique<toolchains::Solaris>(*this, Target, Args);
3860  break;
3861  case llvm::Triple::AMDHSA:
3862  TC = llvm::make_unique<toolchains::AMDGPUToolChain>(*this, Target, Args);
3863  break;
3864  case llvm::Triple::Win32:
3865  switch (Target.getEnvironment()) {
3866  default:
3867  if (Target.isOSBinFormatELF())
3868  TC = llvm::make_unique<toolchains::Generic_ELF>(*this, Target, Args);
3869  else if (Target.isOSBinFormatMachO())
3870  TC = llvm::make_unique<toolchains::MachO>(*this, Target, Args);
3871  else
3872  TC = llvm::make_unique<toolchains::Generic_GCC>(*this, Target, Args);
3873  break;
3874  case llvm::Triple::GNU:
3875  TC = llvm::make_unique<toolchains::MinGW>(*this, Target, Args);
3876  break;
3877  case llvm::Triple::Itanium:
3878  TC = llvm::make_unique<toolchains::CrossWindowsToolChain>(*this, Target,
3879  Args);
3880  break;
3881  case llvm::Triple::MSVC:
3882  case llvm::Triple::UnknownEnvironment:
3883  TC = llvm::make_unique<toolchains::MSVCToolChain>(*this, Target, Args);
3884  break;
3885  }
3886  break;
3887  case llvm::Triple::PS4:
3888  TC = llvm::make_unique<toolchains::PS4CPU>(*this, Target, Args);
3889  break;
3890  case llvm::Triple::Contiki:
3891  TC = llvm::make_unique<toolchains::Contiki>(*this, Target, Args);
3892  break;
3893  default:
3894  // Of these targets, Hexagon is the only one that might have
3895  // an OS of Linux, in which case it got handled above already.
3896  switch (Target.getArch()) {
3897  case llvm::Triple::tce:
3898  TC = llvm::make_unique<toolchains::TCEToolChain>(*this, Target, Args);
3899  break;
3900  case llvm::Triple::tcele:
3901  TC = llvm::make_unique<toolchains::TCELEToolChain>(*this, Target, Args);
3902  break;
3903  case llvm::Triple::hexagon:
3904  TC = llvm::make_unique<toolchains::HexagonToolChain>(*this, Target,
3905  Args);
3906  break;
3907  case llvm::Triple::lanai:
3908  TC = llvm::make_unique<toolchains::LanaiToolChain>(*this, Target, Args);
3909  break;
3910  case llvm::Triple::xcore:
3911  TC = llvm::make_unique<toolchains::XCoreToolChain>(*this, Target, Args);
3912  break;
3913  case llvm::Triple::wasm32:
3914  case llvm::Triple::wasm64:
3915  TC = llvm::make_unique<toolchains::WebAssembly>(*this, Target, Args);
3916  break;
3917  case llvm::Triple::avr:
3918  TC = llvm::make_unique<toolchains::AVRToolChain>(*this, Target, Args);
3919  break;
3920  default:
3921  if (Target.getVendor() == llvm::Triple::Myriad)
3922  TC = llvm::make_unique<toolchains::MyriadToolChain>(*this, Target,
3923  Args);
3924  else if (toolchains::BareMetal::handlesTarget(Target))
3925  TC = llvm::make_unique<toolchains::BareMetal>(*this, Target, Args);
3926  else if (Target.isOSBinFormatELF())
3927  TC = llvm::make_unique<toolchains::Generic_ELF>(*this, Target, Args);
3928  else if (Target.isOSBinFormatMachO())
3929  TC = llvm::make_unique<toolchains::MachO>(*this, Target, Args);
3930  else
3931  TC = llvm::make_unique<toolchains::Generic_GCC>(*this, Target, Args);
3932  }
3933  }
3934  }
3935 
3936  // Intentionally omitted from the switch above: llvm::Triple::CUDA. CUDA
3937  // compiles always need two toolchains, the CUDA toolchain and the host
3938  // toolchain. So the only valid way to create a CUDA toolchain is via
3939  // CreateOffloadingDeviceToolChains.
3940 
3941  return *TC;
3942 }
3943 
3945  // Say "no" if there is not exactly one input of a type clang understands.
3946  if (JA.size() != 1 ||
3947  !types::isAcceptedByClang((*JA.input_begin())->getType()))
3948  return false;
3949 
3950  // And say "no" if this is not a kind of action clang understands.
3951  if (!isa<PreprocessJobAction>(JA) && !isa<PrecompileJobAction>(JA) &&
3952  !isa<CompileJobAction>(JA) && !isa<BackendJobAction>(JA))
3953  return false;
3954 
3955  return true;
3956 }
3957 
3958 /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
3959 /// grouped values as integers. Numbers which are not provided are set to 0.
3960 ///
3961 /// \return True if the entire string was parsed (9.2), or all groups were
3962 /// parsed (10.3.5extrastuff).
3963 bool Driver::GetReleaseVersion(StringRef Str, unsigned &Major, unsigned &Minor,
3964  unsigned &Micro, bool &HadExtra) {
3965  HadExtra = false;
3966 
3967  Major = Minor = Micro = 0;
3968  if (Str.empty())
3969  return false;
3970 
3971  if (Str.consumeInteger(10, Major))
3972  return false;
3973  if (Str.empty())
3974  return true;
3975  if (Str[0] != '.')
3976  return false;
3977 
3978  Str = Str.drop_front(1);
3979 
3980  if (Str.consumeInteger(10, Minor))
3981  return false;
3982  if (Str.empty())
3983  return true;
3984  if (Str[0] != '.')
3985  return false;
3986  Str = Str.drop_front(1);
3987 
3988  if (Str.consumeInteger(10, Micro))
3989  return false;
3990  if (!Str.empty())
3991  HadExtra = true;
3992  return true;
3993 }
3994 
3995 /// Parse digits from a string \p Str and fulfill \p Digits with
3996 /// the parsed numbers. This method assumes that the max number of
3997 /// digits to look for is equal to Digits.size().
3998 ///
3999 /// \return True if the entire string was parsed and there are
4000 /// no extra characters remaining at the end.
4001 bool Driver::GetReleaseVersion(StringRef Str,
4002  MutableArrayRef<unsigned> Digits) {
4003  if (Str.empty())
4004  return false;
4005 
4006  unsigned CurDigit = 0;
4007  while (CurDigit < Digits.size()) {
4008  unsigned Digit;
4009  if (Str.consumeInteger(10, Digit))
4010  return false;
4011  Digits[CurDigit] = Digit;
4012  if (Str.empty())
4013  return true;
4014  if (Str[0] != '.')
4015  return false;
4016  Str = Str.drop_front(1);
4017  CurDigit++;
4018  }
4019 
4020  // More digits than requested, bail out...
4021  return false;
4022 }
4023 
4024 std::pair<unsigned, unsigned> Driver::getIncludeExcludeOptionFlagMasks() const {
4025  unsigned IncludedFlagsBitmask = 0;
4026  unsigned ExcludedFlagsBitmask = options::NoDriverOption;
4027 
4028  if (Mode == CLMode) {
4029  // Include CL and Core options.
4030  IncludedFlagsBitmask |= options::CLOption;
4031  IncludedFlagsBitmask |= options::CoreOption;
4032  } else {
4033  ExcludedFlagsBitmask |= options::CLOption;
4034  }
4035 
4036  return std::make_pair(IncludedFlagsBitmask, ExcludedFlagsBitmask);
4037 }
4038 
4039 bool clang::driver::isOptimizationLevelFast(const ArgList &Args) {
4040  return Args.hasFlag(options::OPT_Ofast, options::OPT_O_Group, false);
4041 }
StringRef getSysRoot() const
Returns the sysroot path.
static bool GetReleaseVersion(StringRef Str, unsigned &Major, unsigned &Minor, unsigned &Micro, bool &HadExtra)
GetReleaseVersion - Parse (([0-9]+)(.
Definition: Driver.cpp:3963
static bool DiagnoseInputExistence(const Driver &D, const DerivedArgList &Args, StringRef Value, types::ID Ty)
Check that the file referenced by Value exists.
Definition: Driver.cpp:1531
ID
ID - Ordered values for successive stages in the compilation process which interact with user options...
Definition: Phases.h:18
Driver(StringRef ClangExecutable, StringRef DefaultTargetTriple, DiagnosticsEngine &Diags, IntrusiveRefCntPtr< vfs::FileSystem > VFS=nullptr)
Definition: Driver.cpp:84
static bool ContainsCompileOrAssembleAction(const Action *A)
Check whether the given input tree contains any compilation or assembly actions.
Definition: Driver.cpp:1430
bool isCollapsingWithNextDependentActionLegal() const
Return true if this function can be collapsed with others.
Definition: Action.h:153
const llvm::opt::ArgStringList & getTempFiles() const
Definition: Compilation.h:191
SmallVector< std::string, 16 > path_list
Definition: ToolChain.h:74
CudaArch
Definition: Cuda.h:31
const char * CudaArchToString(CudaArch A)
Definition: Cuda.cpp:25
OpenMPRuntimeKind getOpenMPRuntime(const llvm::opt::ArgList &Args) const
Compute the desired OpenMP runtime from the flags provided.
Definition: Driver.cpp:482
std::string getClangFullVersion()
Retrieves a string representing the complete clang version, which includes the clang version number...
Definition: Version.cpp:118
prefix_list PrefixDirs
Definition: Driver.h:146
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:3773
const MultilibSet & getMultilibs() const
Definition: ToolChain.h:200
StringRef getArchName() const
Definition: ToolChain.h:176
T * MakeAction(Args &&... Arg)
Creates a new Action owned by this Compilation.
Definition: Compilation.h:180
bool canLipoType(ID Id)
canLipoType - Is this type acceptable as the output of a universal build (currently, just the Nothing, Image, and Object types).
Definition: Types.cpp:88
Set a ToolChain&#39;s effective triple.
Definition: ToolChain.h:519
IntrusiveRefCntPtr< FileSystem > getRealFileSystem()
Gets an vfs::FileSystem for the &#39;real&#39; file system, as seen by the operating system.
const char * getTypeTempSuffix(ID Id, bool CLMode=false)
getTypeTempSuffix - Return the suffix to use when creating a temp file of this type, or null if unspecified.
Definition: Types.cpp:55
unsigned CCCUsePCH
Use lazy precompiled headers for PCH support.
Definition: Driver.h:217
void BuildInputs(const ToolChain &TC, llvm::opt::DerivedArgList &Args, InputList &Inputs) const
BuildInputs - Construct the list of inputs and their types from the given arguments.
Definition: Driver.cpp:1570
StringRef P
void setResponseFile(const char *FileName)
Set to pass arguments via a response file when launching the command.
Definition: Job.cpp:299
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:490
virtual std::string getThreadModel() const
getThreadModel() - Which thread model does this target use?
Definition: ToolChain.h:405
virtual void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const =0
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
input_range inputs()
Definition: Action.h:141
virtual bool isLinkJob() const
Definition: Tool.h:89
DiagnosticBuilder Report(SourceLocation Loc, unsigned DiagID)
Issue the message to the client.
Definition: Diagnostic.h:1205
std::string GetProgramPath(StringRef Name, const ToolChain &TC) const
GetProgramPath - Lookup Name in the list of program search paths.
Definition: Driver.cpp:3739
virtual bool isThreadModelSupported(const StringRef Model) const
isThreadModelSupported() - Does this target support a thread model?
Definition: ToolChain.cpp:440
std::string DyldPrefix
Dynamic loader prefix, if present.
Definition: Driver.h:152
Action * ConstructPhaseAction(Compilation &C, const llvm::opt::ArgList &Args, phases::ID Phase, Action *Input) const
ConstructAction - Construct the appropriate action to do for Phase on the Input, taking in to account...
Definition: Driver.cpp:2726
virtual void printVerboseInfo(raw_ostream &OS) const
Dispatch to the specific toolchain for verbose printing.
Definition: ToolChain.h:272
static StringRef getCategoryNameFromID(unsigned CategoryID)
Given a category ID, return the name of the category.
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:116
InputInfo BuildJobsForAction(Compilation &C, const Action *A, const ToolChain *TC, StringRef BoundArch, bool AtTopLevel, bool MultipleArchs, const char *LinkingOutput, std::map< std::pair< const Action *, std::string >, InputInfo > &CachedResults, Action::OffloadKind TargetDeviceOffloadKind) const
BuildJobsForAction - Construct the jobs to perform for the action A and return an InputInfo for the r...
Definition: Driver.cpp:3207
static ParsedClangName getTargetAndModeFromProgramName(StringRef ProgName)
Return any implicit target and/or mode flag for an invocation of the compiler driver as ProgName...
Definition: ToolChain.cpp:179
ResponseFileSupport getResponseFilesSupport() const
Returns the level of support for response files of this tool, whether it accepts arguments to be pass...
Definition: Tool.h:93
CudaArch StringToCudaArch(llvm::StringRef S)
Definition: Cuda.cpp:59
Type used to communicate device actions.
Definition: Action.h:237
const char * getClassName() const
Definition: Action.h:129
RAII class that determines when any errors have occurred between the time the instance was created an...
Definition: Diagnostic.h:909
virtual void ConstructJobMultipleOutputs(Compilation &C, const JobAction &JA, const InputInfoList &Outputs, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const
Construct jobs to perform the action JA, writing to the Outputs and with Inputs, and add the jobs to ...
Definition: Tool.cpp:26
void registerDependentActionInfo(const ToolChain *TC, StringRef BoundArch, OffloadKind Kind)
Register information about a dependent action.
Definition: Action.h:534
const ArgStringMap & getFailureResultFiles() const
Definition: Compilation.h:195
float __ovld __cnfn normalize(float p)
Returns a vector in the same direction as p but with a length of 1.
const llvm::opt::DerivedArgList & getArgsForToolChain(const ToolChain *TC, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind)
getArgsForToolChain - Return the derived argument list for the tool chain TC (or the default tool cha...
Definition: Compilation.cpp:47
void addOffloadDeviceToolChain(const ToolChain *DeviceToolChain, Action::OffloadKind OffloadKind)
Definition: Compilation.h:157
Compilation * BuildCompilation(ArrayRef< const char *> Args)
BuildCompilation - Construct a compilation object for a command line argument vector.
Definition: Driver.cpp:605
path_list & getProgramPaths()
Definition: ToolChain.h:197
static bool ScanDirForExecutable(SmallString< 128 > &Dir, ArrayRef< std::string > Names)
Definition: Driver.cpp:3728
bool CleanupFileList(const llvm::opt::ArgStringList &Files, bool IssueErrors=false) const
CleanupFileList - Remove the files in the given list.
Definition: Format.h:1821
ActionList & getInputs()
Definition: Action.h:134
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:127
ID lookupCXXTypeForCType(ID Id)
lookupCXXTypeForCType - Lookup CXX input type that corresponds to given C type (used for clang++ emul...
Definition: Types.cpp:275
const std::string & gccSuffix() const
Get the detected GCC installation path suffix for the multi-arch target variant.
Definition: Multilib.h:41
Type used to communicate host actions.
Definition: Action.h:275
static unsigned getNumberOfCategories()
Return the number of diagnostic categories.
BackendAction
Definition: BackendUtil.h:31
std::string GetClPchPath(Compilation &C, StringRef BaseName) const
Return the pathname of the pch file in clang-cl mode.
Definition: Driver.cpp:3784
Action - Represent an abstract compilation step to perform.
Definition: Action.h:45
std::string getTripleString() const
Definition: ToolChain.h:184
bool HandleImmediateArgs(const Compilation &C)
HandleImmediateArgs - Handle any arguments which should be treated before building actions or binding...
Definition: Driver.cpp:1208
static std::string GetOffloadingFileNamePrefix(OffloadKind Kind, llvm::StringRef NormalizedTriple, bool CreatePrefixForHost=false)
Return a string that can be used as prefix in order to generate unique files for each offloading kind...
Definition: Action.cpp:121
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:23
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:147
types::ID getType() const
Definition: Action.h:132
bool isOptimizationLevelFast(const llvm::opt::ArgList &Args)
path_list & getFilePaths()
Definition: ToolChain.h:194
The LLVM OpenMP runtime.
Definition: Driver.h:102
OffloadKind getOffloadingDeviceKind() const
Definition: Action.h:182
std::unique_ptr< llvm::opt::OptTable > createDriverOptTable()
virtual bool isDsymutilJob() const
Definition: Tool.h:90
void generateCompilationDiagnostics(Compilation &C, const Command &FailingCommand)
generateCompilationDiagnostics - Generate diagnostics information including preprocessed source file(...
Definition: Driver.cpp:856
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:65
An unknown OpenMP runtime.
Definition: Driver.h:98
const llvm::opt::InputArgList & getInputArgs() const
Definition: Compilation.h:168
input_iterator input_begin()
Definition: Action.h:139
bool hasOffloadToolChain() const
Return true if an offloading tool chain of a given kind exists.
Definition: Compilation.h:139
ID getPreprocessedType(ID Id)
getPreprocessedType - Get the ID of the type for this input when it has been preprocessed, or INVALID if this input is not preprocessed.
Definition: Types.cpp:43
StringRef Filename
Definition: Format.cpp:1316
void add(Action &A, const ToolChain &TC, const char *BoundArch, OffloadKind OKind)
Add a action along with the associated toolchain, bound arch, and offload kind.
Definition: Action.cpp:280
void PrintActions(const Compilation &C) const
PrintActions - Print the list of actions.
Definition: Driver.cpp:1422
const ToolChain & getDefaultToolChain() const
Definition: Compilation.h:119
const ArgStringMap & getResultFiles() const
Definition: Compilation.h:193
unsigned GenReproducer
Force clang to emit reproducer for driver invocation.
Definition: Driver.h:222
ID lookupHeaderTypeForSourceType(ID Id)
Lookup header file input type that corresponds to given source file type (used for clang-cl emulation...
Definition: Types.cpp:291
void handleAutocompletions(StringRef PassedFlags) const
handleAutocompletions - Handle –autocomplete by searching and printing possible flags, descriptions, and its arguments.
Definition: Driver.cpp:1160
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:39
std::string getAsString() const
getAsString - Return a string name for this input, for debugging.
Definition: InputInfo.h:95
static Arg * MakeInputArg(DerivedArgList &Args, OptTable &Opts, StringRef Value)
Definition: Driver.cpp:258
ActionClass getKind() const
Definition: Action.h:131
SourceLocation End
const char * getPhaseName(ID Id)
Definition: Phases.cpp:16
int Id
Definition: ASTDiff.cpp:191
const FunctionProtoType * T
const Tool & getCreator() const
getCreator - Return the Tool which caused the creation of this job.
Definition: Job.h:107
StateNode * Previous
bool isSaveTempsObj() const
Definition: Driver.h:311
Defines version macros and version-related utility functions for Clang.
static StringRef GetOffloadKindName(OffloadKind Kind)
Return a string containing a offload kind name.
Definition: Action.cpp:137
bool IsCLMode() const
Whether the driver should follow cl.exe like behavior.
Definition: Driver.h:183
virtual types::ID LookupTypeForExtension(StringRef Ext) const
LookupTypeForExtension - Return the default language type to use for the given extension.
Definition: ToolChain.cpp:411
This corresponds to a single GCC Multilib, or a segment of one controlled by a command line flag...
Definition: Multilib.h:25
static std::string GetTriplePlusArchString(const ToolChain *TC, StringRef BoundArch, Action::OffloadKind OffloadKind)
Return a string that uniquely identifies the result of a job.
Definition: Driver.cpp:3194
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:317
void getCompilationPhases(ID Id, llvm::SmallVectorImpl< phases::ID > &Phases)
getCompilationPhases - Get the list of compilation phases (&#39;Phases&#39;) to be done for type &#39;Id&#39;...
Definition: Types.cpp:249
void BuildUniversalActions(Compilation &C, const ToolChain &TC, const InputList &BAInputs) const
BuildUniversalActions - Construct the list of actions to perform for the given arguments, which may require a universal build.
Definition: Driver.cpp:1442
size_type size() const
Definition: Action.h:137
llvm::opt::InputArgList ParseArgStrings(ArrayRef< const char *> Args, bool &ContainsError)
ParseArgStrings - Parse the given list of strings into an ArgList.
Definition: Driver.cpp:154
void setCannotBeCollapsedWithNextDependentAction()
Mark this action as not legal to collapse.
Definition: Action.h:149
llvm::Triple::ArchType getArchTypeForMachOArchName(StringRef Str)
Definition: Darwin.cpp:34
const ActionList & getActions() const
Get each of the individual arrays.
Definition: Action.h:265
const_offload_toolchains_range getOffloadToolChains() const
Definition: Compilation.h:134
static void PrintDiagnosticCategories(raw_ostream &OS)
PrintDiagnosticCategories - Implement the –print-diagnostic-categories option.
Definition: Driver.cpp:1153
void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote, CrashReportInfo *CrashInfo=nullptr) const
Definition: Job.cpp:424
void PrintHelp(bool ShowHidden) const
PrintHelp - Print the help text.
Definition: Driver.cpp:1116
virtual bool canEmitIR() const
Definition: Tool.h:87
static void printArg(llvm::raw_ostream &OS, StringRef Arg, bool Quote)
Print a command argument, and optionally quote it.
Definition: Job.cpp:97
#define false
Definition: stdbool.h:33
virtual bool hasIntegratedCPP() const =0
static unsigned PrintActions1(const Compilation &C, Action *A, std::map< Action *, unsigned > &Ids)
Definition: Driver.cpp:1345
bool embedBitcodeInObject() const
Definition: Driver.h:314
Encodes a location in the source.
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:170
bool hasErrorOccurred() const
Determine whether any errors have occurred since this object instance was created.
Definition: Diagnostic.h:920
Command - An executable path/name and argument vector to execute.
Definition: Job.h:44
bool isCuda(ID Id)
isCuda - Is this a CUDA input.
Definition: Types.cpp:161
The legacy name for the LLVM OpenMP runtime from when it was the Intel OpenMP runtime.
Definition: Driver.h:112
std::string InstalledDir
The path to the installed clang directory, if any.
Definition: Driver.h:136
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:174
const char * addResultFile(const char *Name, const JobAction *JA)
addResultFile - Add a file to remove on failure, and returns its argument.
Definition: Compilation.h:223
bool isSaveTempsEnabled() const
Definition: Driver.h:310
static std::vector< std::string > getDiagnosticFlags()
Get the string of all diagnostic flags.
bool isAcceptedByClang(ID Id)
isAcceptedByClang - Can clang handle this input type.
Definition: Types.cpp:95
virtual bool hasIntegratedAssembler() const
Definition: Tool.h:86
An offload action combines host or/and device actions according to the programming model implementati...
Definition: Action.h:231
const char * getDefaultImageName() const
Returns the default name for linked images (e.g., "a.out").
Definition: Driver.cpp:3478
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:580
void ExecuteJobs(const JobList &Jobs, SmallVectorImpl< std::pair< int, const Command *>> &FailingCommands) const
ExecuteJob - Execute a single job.
const char * getShortName() const
Definition: Tool.h:82
void setIgnoreAllWarnings(bool Val)
When set to true, any unmapped warnings are ignored.
Definition: Diagnostic.h:503
unsigned getOffloadingHostActiveKinds() const
Definition: Action.h:179
void EmbedBitcode(llvm::Module *M, const CodeGenOptions &CGOpts, llvm::MemoryBufferRef Buf)
const Action & getSource() const
getSource - Return the Action which caused the creation of this job.
Definition: Job.h:104
Dataflow Directional Tag Classes.
Level getDiagnosticLevel(unsigned DiagID, SourceLocation Loc) const
Based on the way the client configured the DiagnosticsEngine object, classify the specified diagnosti...
Definition: Diagnostic.h:747
const char * getExecutable() const
Definition: Job.h:124
unsigned CCCPrintBindings
Only print tool bindings, don&#39;t build any jobs.
Definition: Driver.h:186
virtual std::string ComputeEffectiveClangTriple(const llvm::opt::ArgList &Args, types::ID InputType=types::TY_INVALID) const
ComputeEffectiveClangTriple - Return the Clang triple to use for this target, which may take into acc...
Definition: ToolChain.cpp:557
const llvm::opt::ArgStringList & getArguments() const
Definition: Job.h:126
virtual bool hasGoodDiagnostics() const
Does this tool have "good" standardized diagnostics, or should the driver add an additional "command ...
Definition: Tool.h:117
std::string SysRoot
sysroot, if present
Definition: Driver.h:149
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
void setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str)
Definition: Darwin.cpp:69
std::string Name
The name the driver was invoked as.
Definition: Driver.h:123
Defines the virtual file system interface vfs::FileSystem.
static bool handlesTarget(const llvm::Triple &Triple)
Definition: BareMetal.cpp:60
The GNU OpenMP runtime.
Definition: Driver.h:107
int ExecuteCompilation(Compilation &C, SmallVectorImpl< std::pair< int, const Command *> > &FailingCommands)
ExecuteCompilation - Execute the compilation according to the command line arguments and return an ap...
Definition: Driver.cpp:1052
ActionList & getActions()
Definition: Compilation.h:174
ParsedClangName ClangNameParts
Target and driver mode components extracted from clang executable name.
Definition: Driver.h:133
bool getCheckInputsExist() const
Definition: Driver.h:286
std::string ClangExecutable
The original path to the clang executable.
Definition: Driver.h:130
void BuildJobs(Compilation &C) const
BuildJobs - Bind actions to concrete tools and translate arguments to form the list of jobs to run...
Definition: Driver.cpp:2808
ID getPrecompiledType(ID Id)
getPrecompiledType - Get the ID of the type for this input when it has been precompiled, or INVALID if this input is not precompiled.
Definition: Types.cpp:47
bool ShouldUseClangCompiler(const JobAction &JA) const
ShouldUseClangCompiler - Should the clang compiler be used to handle this action. ...
Definition: Driver.cpp:3944
StringRef getDefaultUniversalArchName() const
Provide the default architecture name (as expected by -arch) for this toolchain.
Definition: ToolChain.cpp:201
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:34
void BuildActions(Compilation &C, llvm::opt::DerivedArgList &Args, const InputList &Inputs, ActionList &Actions) const
BuildActions - Construct the list of actions to perform for the given arguments, which are only done ...
Definition: Driver.cpp:2470
const Driver & getDriver() const
Definition: Compilation.h:117
const llvm::Triple & getTriple() const
Definition: ToolChain.h:166
std::string GetFilePath(StringRef Name, const ToolChain &TC) const
GetFilePath - Lookup Name in the list of file search paths.
Definition: Driver.cpp:3681
static void printArgList(raw_ostream &OS, const llvm::opt::ArgList &Args)
Definition: Driver.cpp:751
static llvm::Triple computeTargetTriple(const Driver &D, StringRef DefaultTargetTriple, const ArgList &Args, StringRef DarwinArchName="")
Compute target triple from args.
Definition: Driver.cpp:360
const ToolChain & getToolChain() const
Definition: Tool.h:84
char __ovld __cnfn max(char x, char y)
Returns y if x < y, otherwise it returns x.
bool CleanupFileMap(const ArgStringMap &Files, const JobAction *JA, bool IssueErrors=false) const
CleanupFileMap - Remove the files in the given map.
virtual std::string getCompilerRTPath() const
Definition: ToolChain.cpp:310
void propagateHostOffloadInfo(unsigned OKinds, const char *OArch)
Append the host offload info of this action and propagate it to its dependences.
Definition: Action.cpp:67
void ParseDriverMode(StringRef ProgramName, ArrayRef< const char *> Args)
ParseDriverMode - Look for and handle the driver mode option in Args.
Definition: Driver.cpp:120
const char * getName() const
Definition: Tool.h:80
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:280
virtual Tool * SelectTool(const JobAction &JA) const
Choose a tool to use to handle the action JA.
Definition: ToolChain.cpp:363
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:216
std::string getOffloadingKindPrefix() const
Return a string containing the offload kind of the action.
Definition: Action.cpp:89
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:147
std::string DriverTitle
Driver title to use with help.
Definition: Driver.h:155
static const char * MakeCLOutputFilename(const ArgList &Args, StringRef ArgValue, StringRef BaseName, types::ID FileType)
Create output filename based on ArgValue, which could either be a full filename, filename without ext...
Definition: Driver.cpp:3487
bool CCCIsCPP() const
Whether the driver is just the preprocessor.
Definition: Driver.h:177
void PrintVersion(const Compilation &C, raw_ostream &OS) const
PrintVersion - Print the driver version.
Definition: Driver.cpp:1131
void CreateOffloadingDeviceToolChains(Compilation &C, InputList &Inputs)
CreateOffloadingDeviceToolChains - create all the toolchains required to support offloading devices g...
Definition: Driver.cpp:507
bool appendSuffixForType(ID Id)
appendSuffixForType - When generating outputs of this type, should the suffix be appended (instead of...
Definition: Types.cpp:84
ID lookupTypeForTypeSpecifier(const char *Name)
lookupTypeForTypSpecifier - Lookup the type to use for a user specified type name.
Definition: Types.cpp:237
const char * GetNamedOutputPath(Compilation &C, const JobAction &JA, const char *BaseInput, StringRef BoundArch, bool AtTopLevel, bool MultipleArchs, StringRef NormalizedTriple) const
GetNamedOutputPath - Return the name to use for the output of the action JA.
Definition: Driver.cpp:3516
#define true
Definition: stdbool.h:32
void initCompilationForDiagnostics()
initCompilationForDiagnostics - Remove stale state and suppress output so compilation can be reexecut...
bool isSrcFile(ID Id)
isSrcFile - Is this a source file, i.e.
Definition: Types.cpp:173
const char * DriverMode
Corresponding driver mode argument, as &#39;–driver-mode=g++&#39;.
Definition: ToolChain.h:58
const char * getOffloadingArch() const
Definition: Action.h:183
virtual void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote, CrashReportInfo *CrashInfo=nullptr) const
Definition: Job.cpp:209
unsigned CCGenDiagnostics
Whether the driver is generating diagnostics for debugging purposes.
Definition: Driver.h:202
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:72
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:139