clang  5.0.0
Clang.cpp
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1 //===--- LLVM.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "Clang.h"
11 #include "Arch/AArch64.h"
12 #include "Arch/ARM.h"
13 #include "Arch/Mips.h"
14 #include "Arch/PPC.h"
15 #include "Arch/Sparc.h"
16 #include "Arch/SystemZ.h"
17 #include "Arch/X86.h"
18 #include "CommonArgs.h"
19 #include "Hexagon.h"
20 #include "InputInfo.h"
21 #include "PS4CPU.h"
22 #include "clang/Basic/CharInfo.h"
25 #include "clang/Basic/Version.h"
26 #include "clang/Config/config.h"
28 #include "clang/Driver/Options.h"
30 #include "clang/Driver/XRayArgs.h"
31 #include "llvm/ADT/StringExtras.h"
32 #include "llvm/Option/ArgList.h"
33 #include "llvm/Support/CodeGen.h"
34 #include "llvm/Support/Compression.h"
35 #include "llvm/Support/FileSystem.h"
36 #include "llvm/Support/Path.h"
37 #include "llvm/Support/Process.h"
38 #include "llvm/Support/TargetParser.h"
39 #include "llvm/Support/YAMLParser.h"
40 
41 #ifdef LLVM_ON_UNIX
42 #include <unistd.h> // For getuid().
43 #endif
44 
45 using namespace clang::driver;
46 using namespace clang::driver::tools;
47 using namespace clang;
48 using namespace llvm::opt;
49 
50 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
51  if (Arg *A =
52  Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
53  if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
54  !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
55  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
56  << A->getBaseArg().getAsString(Args)
57  << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
58  }
59  }
60 }
61 
62 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
63  // In gcc, only ARM checks this, but it seems reasonable to check universally.
64  if (Args.hasArg(options::OPT_static))
65  if (const Arg *A =
66  Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
67  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
68  << "-static";
69 }
70 
71 // Add backslashes to escape spaces and other backslashes.
72 // This is used for the space-separated argument list specified with
73 // the -dwarf-debug-flags option.
74 static void EscapeSpacesAndBackslashes(const char *Arg,
75  SmallVectorImpl<char> &Res) {
76  for (; *Arg; ++Arg) {
77  switch (*Arg) {
78  default:
79  break;
80  case ' ':
81  case '\\':
82  Res.push_back('\\');
83  break;
84  }
85  Res.push_back(*Arg);
86  }
87 }
88 
89 // Quote target names for inclusion in GNU Make dependency files.
90 // Only the characters '$', '#', ' ', '\t' are quoted.
91 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
92  for (unsigned i = 0, e = Target.size(); i != e; ++i) {
93  switch (Target[i]) {
94  case ' ':
95  case '\t':
96  // Escape the preceding backslashes
97  for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
98  Res.push_back('\\');
99 
100  // Escape the space/tab
101  Res.push_back('\\');
102  break;
103  case '$':
104  Res.push_back('$');
105  break;
106  case '#':
107  Res.push_back('\\');
108  break;
109  default:
110  break;
111  }
112 
113  Res.push_back(Target[i]);
114  }
115 }
116 
117 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
118 /// offloading tool chain that is associated with the current action \a JA.
119 static void
121  const ToolChain &RegularToolChain,
122  llvm::function_ref<void(const ToolChain &)> Work) {
123  // Apply Work on the current/regular tool chain.
124  Work(RegularToolChain);
125 
126  // Apply Work on all the offloading tool chains associated with the current
127  // action.
132 
135  for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
136  Work(*II->second);
137  } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
139 
140  //
141  // TODO: Add support for other offloading programming models here.
142  //
143 }
144 
145 /// This is a helper function for validating the optional refinement step
146 /// parameter in reciprocal argument strings. Return false if there is an error
147 /// parsing the refinement step. Otherwise, return true and set the Position
148 /// of the refinement step in the input string.
149 static bool getRefinementStep(StringRef In, const Driver &D,
150  const Arg &A, size_t &Position) {
151  const char RefinementStepToken = ':';
152  Position = In.find(RefinementStepToken);
153  if (Position != StringRef::npos) {
154  StringRef Option = A.getOption().getName();
155  StringRef RefStep = In.substr(Position + 1);
156  // Allow exactly one numeric character for the additional refinement
157  // step parameter. This is reasonable for all currently-supported
158  // operations and architectures because we would expect that a larger value
159  // of refinement steps would cause the estimate "optimization" to
160  // under-perform the native operation. Also, if the estimate does not
161  // converge quickly, it probably will not ever converge, so further
162  // refinement steps will not produce a better answer.
163  if (RefStep.size() != 1) {
164  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
165  return false;
166  }
167  char RefStepChar = RefStep[0];
168  if (RefStepChar < '0' || RefStepChar > '9') {
169  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
170  return false;
171  }
172  }
173  return true;
174 }
175 
176 /// The -mrecip flag requires processing of many optional parameters.
177 static void ParseMRecip(const Driver &D, const ArgList &Args,
178  ArgStringList &OutStrings) {
179  StringRef DisabledPrefixIn = "!";
180  StringRef DisabledPrefixOut = "!";
181  StringRef EnabledPrefixOut = "";
182  StringRef Out = "-mrecip=";
183 
184  Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
185  if (!A)
186  return;
187 
188  unsigned NumOptions = A->getNumValues();
189  if (NumOptions == 0) {
190  // No option is the same as "all".
191  OutStrings.push_back(Args.MakeArgString(Out + "all"));
192  return;
193  }
194 
195  // Pass through "all", "none", or "default" with an optional refinement step.
196  if (NumOptions == 1) {
197  StringRef Val = A->getValue(0);
198  size_t RefStepLoc;
199  if (!getRefinementStep(Val, D, *A, RefStepLoc))
200  return;
201  StringRef ValBase = Val.slice(0, RefStepLoc);
202  if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
203  OutStrings.push_back(Args.MakeArgString(Out + Val));
204  return;
205  }
206  }
207 
208  // Each reciprocal type may be enabled or disabled individually.
209  // Check each input value for validity, concatenate them all back together,
210  // and pass through.
211 
212  llvm::StringMap<bool> OptionStrings;
213  OptionStrings.insert(std::make_pair("divd", false));
214  OptionStrings.insert(std::make_pair("divf", false));
215  OptionStrings.insert(std::make_pair("vec-divd", false));
216  OptionStrings.insert(std::make_pair("vec-divf", false));
217  OptionStrings.insert(std::make_pair("sqrtd", false));
218  OptionStrings.insert(std::make_pair("sqrtf", false));
219  OptionStrings.insert(std::make_pair("vec-sqrtd", false));
220  OptionStrings.insert(std::make_pair("vec-sqrtf", false));
221 
222  for (unsigned i = 0; i != NumOptions; ++i) {
223  StringRef Val = A->getValue(i);
224 
225  bool IsDisabled = Val.startswith(DisabledPrefixIn);
226  // Ignore the disablement token for string matching.
227  if (IsDisabled)
228  Val = Val.substr(1);
229 
230  size_t RefStep;
231  if (!getRefinementStep(Val, D, *A, RefStep))
232  return;
233 
234  StringRef ValBase = Val.slice(0, RefStep);
235  llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
236  if (OptionIter == OptionStrings.end()) {
237  // Try again specifying float suffix.
238  OptionIter = OptionStrings.find(ValBase.str() + 'f');
239  if (OptionIter == OptionStrings.end()) {
240  // The input name did not match any known option string.
241  D.Diag(diag::err_drv_unknown_argument) << Val;
242  return;
243  }
244  // The option was specified without a float or double suffix.
245  // Make sure that the double entry was not already specified.
246  // The float entry will be checked below.
247  if (OptionStrings[ValBase.str() + 'd']) {
248  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
249  return;
250  }
251  }
252 
253  if (OptionIter->second == true) {
254  // Duplicate option specified.
255  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
256  return;
257  }
258 
259  // Mark the matched option as found. Do not allow duplicate specifiers.
260  OptionIter->second = true;
261 
262  // If the precision was not specified, also mark the double entry as found.
263  if (ValBase.back() != 'f' && ValBase.back() != 'd')
264  OptionStrings[ValBase.str() + 'd'] = true;
265 
266  // Build the output string.
267  StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
268  Out = Args.MakeArgString(Out + Prefix + Val);
269  if (i != NumOptions - 1)
270  Out = Args.MakeArgString(Out + ",");
271  }
272 
273  OutStrings.push_back(Args.MakeArgString(Out));
274 }
275 
276 static void getHexagonTargetFeatures(const ArgList &Args,
277  std::vector<StringRef> &Features) {
278  handleTargetFeaturesGroup(Args, Features,
279  options::OPT_m_hexagon_Features_Group);
280 
281  bool UseLongCalls = false;
282  if (Arg *A = Args.getLastArg(options::OPT_mlong_calls,
283  options::OPT_mno_long_calls)) {
284  if (A->getOption().matches(options::OPT_mlong_calls))
285  UseLongCalls = true;
286  }
287 
288  Features.push_back(UseLongCalls ? "+long-calls" : "-long-calls");
289 }
290 
291 static void getWebAssemblyTargetFeatures(const ArgList &Args,
292  std::vector<StringRef> &Features) {
293  handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
294 }
295 
296 static void getAMDGPUTargetFeatures(const Driver &D, const ArgList &Args,
297  std::vector<StringRef> &Features) {
298  if (const Arg *dAbi = Args.getLastArg(options::OPT_mamdgpu_debugger_abi)) {
299  StringRef value = dAbi->getValue();
300  if (value == "1.0") {
301  Features.push_back("+amdgpu-debugger-insert-nops");
302  Features.push_back("+amdgpu-debugger-reserve-regs");
303  Features.push_back("+amdgpu-debugger-emit-prologue");
304  } else {
305  D.Diag(diag::err_drv_clang_unsupported) << dAbi->getAsString(Args);
306  }
307  }
308 
310  Args, Features, options::OPT_m_amdgpu_Features_Group);
311 }
312 
313 static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
314  const ArgList &Args, ArgStringList &CmdArgs,
315  bool ForAS) {
316  const Driver &D = TC.getDriver();
317  std::vector<StringRef> Features;
318  switch (Triple.getArch()) {
319  default:
320  break;
321  case llvm::Triple::mips:
322  case llvm::Triple::mipsel:
323  case llvm::Triple::mips64:
324  case llvm::Triple::mips64el:
325  mips::getMIPSTargetFeatures(D, Triple, Args, Features);
326  break;
327 
328  case llvm::Triple::arm:
329  case llvm::Triple::armeb:
330  case llvm::Triple::thumb:
331  case llvm::Triple::thumbeb:
332  arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
333  break;
334 
335  case llvm::Triple::ppc:
336  case llvm::Triple::ppc64:
337  case llvm::Triple::ppc64le:
338  ppc::getPPCTargetFeatures(D, Triple, Args, Features);
339  break;
340  case llvm::Triple::systemz:
341  systemz::getSystemZTargetFeatures(Args, Features);
342  break;
343  case llvm::Triple::aarch64:
344  case llvm::Triple::aarch64_be:
345  aarch64::getAArch64TargetFeatures(D, Args, Features);
346  break;
347  case llvm::Triple::x86:
348  case llvm::Triple::x86_64:
349  x86::getX86TargetFeatures(D, Triple, Args, Features);
350  break;
351  case llvm::Triple::hexagon:
352  getHexagonTargetFeatures(Args, Features);
353  break;
354  case llvm::Triple::wasm32:
355  case llvm::Triple::wasm64:
356  getWebAssemblyTargetFeatures(Args, Features);
357  break;
358  case llvm::Triple::sparc:
359  case llvm::Triple::sparcel:
360  case llvm::Triple::sparcv9:
361  sparc::getSparcTargetFeatures(D, Args, Features);
362  break;
363  case llvm::Triple::r600:
364  case llvm::Triple::amdgcn:
365  getAMDGPUTargetFeatures(D, Args, Features);
366  break;
367  }
368 
369  // Find the last of each feature.
370  llvm::StringMap<unsigned> LastOpt;
371  for (unsigned I = 0, N = Features.size(); I < N; ++I) {
372  StringRef Name = Features[I];
373  assert(Name[0] == '-' || Name[0] == '+');
374  LastOpt[Name.drop_front(1)] = I;
375  }
376 
377  for (unsigned I = 0, N = Features.size(); I < N; ++I) {
378  // If this feature was overridden, ignore it.
379  StringRef Name = Features[I];
380  llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
381  assert(LastI != LastOpt.end());
382  unsigned Last = LastI->second;
383  if (Last != I)
384  continue;
385 
386  CmdArgs.push_back("-target-feature");
387  CmdArgs.push_back(Name.data());
388  }
389 }
390 
391 static bool
393  const llvm::Triple &Triple) {
394  // We use the zero-cost exception tables for Objective-C if the non-fragile
395  // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
396  // later.
397  if (runtime.isNonFragile())
398  return true;
399 
400  if (!Triple.isMacOSX())
401  return false;
402 
403  return (!Triple.isMacOSXVersionLT(10, 5) &&
404  (Triple.getArch() == llvm::Triple::x86_64 ||
405  Triple.getArch() == llvm::Triple::arm));
406 }
407 
408 /// Adds exception related arguments to the driver command arguments. There's a
409 /// master flag, -fexceptions and also language specific flags to enable/disable
410 /// C++ and Objective-C exceptions. This makes it possible to for example
411 /// disable C++ exceptions but enable Objective-C exceptions.
412 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
413  const ToolChain &TC, bool KernelOrKext,
414  const ObjCRuntime &objcRuntime,
415  ArgStringList &CmdArgs) {
416  const Driver &D = TC.getDriver();
417  const llvm::Triple &Triple = TC.getTriple();
418 
419  if (KernelOrKext) {
420  // -mkernel and -fapple-kext imply no exceptions, so claim exception related
421  // arguments now to avoid warnings about unused arguments.
422  Args.ClaimAllArgs(options::OPT_fexceptions);
423  Args.ClaimAllArgs(options::OPT_fno_exceptions);
424  Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
425  Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
426  Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
427  Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
428  return;
429  }
430 
431  // See if the user explicitly enabled exceptions.
432  bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
433  false);
434 
435  // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
436  // is not necessarily sensible, but follows GCC.
437  if (types::isObjC(InputType) &&
438  Args.hasFlag(options::OPT_fobjc_exceptions,
439  options::OPT_fno_objc_exceptions, true)) {
440  CmdArgs.push_back("-fobjc-exceptions");
441 
442  EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
443  }
444 
445  if (types::isCXX(InputType)) {
446  // Disable C++ EH by default on XCore and PS4.
447  bool CXXExceptionsEnabled =
448  Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
449  Arg *ExceptionArg = Args.getLastArg(
450  options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
451  options::OPT_fexceptions, options::OPT_fno_exceptions);
452  if (ExceptionArg)
453  CXXExceptionsEnabled =
454  ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
455  ExceptionArg->getOption().matches(options::OPT_fexceptions);
456 
457  if (CXXExceptionsEnabled) {
458  if (Triple.isPS4CPU()) {
459  ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
460  assert(ExceptionArg &&
461  "On the PS4 exceptions should only be enabled if passing "
462  "an argument");
463  if (RTTIMode == ToolChain::RM_DisabledExplicitly) {
464  const Arg *RTTIArg = TC.getRTTIArg();
465  assert(RTTIArg && "RTTI disabled explicitly but no RTTIArg!");
466  D.Diag(diag::err_drv_argument_not_allowed_with)
467  << RTTIArg->getAsString(Args) << ExceptionArg->getAsString(Args);
468  } else if (RTTIMode == ToolChain::RM_EnabledImplicitly)
469  D.Diag(diag::warn_drv_enabling_rtti_with_exceptions);
470  } else
472 
473  CmdArgs.push_back("-fcxx-exceptions");
474 
475  EH = true;
476  }
477  }
478 
479  if (EH)
480  CmdArgs.push_back("-fexceptions");
481 }
482 
483 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
484  bool Default = true;
485  if (TC.getTriple().isOSDarwin()) {
486  // The native darwin assembler doesn't support the linker_option directives,
487  // so we disable them if we think the .s file will be passed to it.
488  Default = TC.useIntegratedAs();
489  }
490  return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
491  Default);
492 }
493 
494 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
495  const ToolChain &TC) {
496  bool UseDwarfDirectory =
497  Args.hasFlag(options::OPT_fdwarf_directory_asm,
498  options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
499  return !UseDwarfDirectory;
500 }
501 
502 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
503 // to the corresponding DebugInfoKind.
505  assert(A.getOption().matches(options::OPT_gN_Group) &&
506  "Not a -g option that specifies a debug-info level");
507  if (A.getOption().matches(options::OPT_g0) ||
508  A.getOption().matches(options::OPT_ggdb0))
510  if (A.getOption().matches(options::OPT_gline_tables_only) ||
511  A.getOption().matches(options::OPT_ggdb1))
514 }
515 
516 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
517  switch (Triple.getArch()){
518  default:
519  return false;
520  case llvm::Triple::arm:
521  case llvm::Triple::thumb:
522  // ARM Darwin targets require a frame pointer to be always present to aid
523  // offline debugging via backtraces.
524  return Triple.isOSDarwin();
525  }
526 }
527 
528 static bool useFramePointerForTargetByDefault(const ArgList &Args,
529  const llvm::Triple &Triple) {
530  switch (Triple.getArch()) {
531  case llvm::Triple::xcore:
532  case llvm::Triple::wasm32:
533  case llvm::Triple::wasm64:
534  // XCore never wants frame pointers, regardless of OS.
535  // WebAssembly never wants frame pointers.
536  return false;
537  default:
538  break;
539  }
540 
541  if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) {
542  switch (Triple.getArch()) {
543  // Don't use a frame pointer on linux if optimizing for certain targets.
544  case llvm::Triple::mips64:
545  case llvm::Triple::mips64el:
546  case llvm::Triple::mips:
547  case llvm::Triple::mipsel:
548  case llvm::Triple::ppc:
549  case llvm::Triple::ppc64:
550  case llvm::Triple::ppc64le:
551  case llvm::Triple::systemz:
552  case llvm::Triple::x86:
553  case llvm::Triple::x86_64:
554  return !areOptimizationsEnabled(Args);
555  default:
556  return true;
557  }
558  }
559 
560  if (Triple.isOSWindows()) {
561  switch (Triple.getArch()) {
562  case llvm::Triple::x86:
563  return !areOptimizationsEnabled(Args);
564  case llvm::Triple::x86_64:
565  return Triple.isOSBinFormatMachO();
566  case llvm::Triple::arm:
567  case llvm::Triple::thumb:
568  // Windows on ARM builds with FPO disabled to aid fast stack walking
569  return true;
570  default:
571  // All other supported Windows ISAs use xdata unwind information, so frame
572  // pointers are not generally useful.
573  return false;
574  }
575  }
576 
577  return true;
578 }
579 
580 static bool shouldUseFramePointer(const ArgList &Args,
581  const llvm::Triple &Triple) {
582  if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
583  options::OPT_fomit_frame_pointer))
584  return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
586 
587  if (Args.hasArg(options::OPT_pg))
588  return true;
589 
590  return useFramePointerForTargetByDefault(Args, Triple);
591 }
592 
593 static bool shouldUseLeafFramePointer(const ArgList &Args,
594  const llvm::Triple &Triple) {
595  if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
596  options::OPT_momit_leaf_frame_pointer))
597  return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
598 
599  if (Args.hasArg(options::OPT_pg))
600  return true;
601 
602  if (Triple.isPS4CPU())
603  return false;
604 
605  return useFramePointerForTargetByDefault(Args, Triple);
606 }
607 
608 /// Add a CC1 option to specify the debug compilation directory.
609 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
610  SmallString<128> cwd;
611  if (!llvm::sys::fs::current_path(cwd)) {
612  CmdArgs.push_back("-fdebug-compilation-dir");
613  CmdArgs.push_back(Args.MakeArgString(cwd));
614  }
615 }
616 
617 /// \brief Vectorize at all optimization levels greater than 1 except for -Oz.
618 /// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
619 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
620  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
621  if (A->getOption().matches(options::OPT_O4) ||
622  A->getOption().matches(options::OPT_Ofast))
623  return true;
624 
625  if (A->getOption().matches(options::OPT_O0))
626  return false;
627 
628  assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
629 
630  // Vectorize -Os.
631  StringRef S(A->getValue());
632  if (S == "s")
633  return true;
634 
635  // Don't vectorize -Oz, unless it's the slp vectorizer.
636  if (S == "z")
637  return isSlpVec;
638 
639  unsigned OptLevel = 0;
640  if (S.getAsInteger(10, OptLevel))
641  return false;
642 
643  return OptLevel > 1;
644  }
645 
646  return false;
647 }
648 
649 /// Add -x lang to \p CmdArgs for \p Input.
650 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
651  ArgStringList &CmdArgs) {
652  // When using -verify-pch, we don't want to provide the type
653  // 'precompiled-header' if it was inferred from the file extension
654  if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
655  return;
656 
657  CmdArgs.push_back("-x");
658  if (Args.hasArg(options::OPT_rewrite_objc))
659  CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
660  else {
661  // Map the driver type to the frontend type. This is mostly an identity
662  // mapping, except that the distinction between module interface units
663  // and other source files does not exist at the frontend layer.
664  const char *ClangType;
665  switch (Input.getType()) {
666  case types::TY_CXXModule:
667  ClangType = "c++";
668  break;
669  case types::TY_PP_CXXModule:
670  ClangType = "c++-cpp-output";
671  break;
672  default:
673  ClangType = types::getTypeName(Input.getType());
674  break;
675  }
676  CmdArgs.push_back(ClangType);
677  }
678 }
679 
681 #ifdef LLVM_ON_UNIX
682  const char *Username = getenv("LOGNAME");
683 #else
684  const char *Username = getenv("USERNAME");
685 #endif
686  if (Username) {
687  // Validate that LoginName can be used in a path, and get its length.
688  size_t Len = 0;
689  for (const char *P = Username; *P; ++P, ++Len) {
690  if (!clang::isAlphanumeric(*P) && *P != '_') {
691  Username = nullptr;
692  break;
693  }
694  }
695 
696  if (Username && Len > 0) {
697  Result.append(Username, Username + Len);
698  return;
699  }
700  }
701 
702 // Fallback to user id.
703 #ifdef LLVM_ON_UNIX
704  std::string UID = llvm::utostr(getuid());
705 #else
706  // FIXME: Windows seems to have an 'SID' that might work.
707  std::string UID = "9999";
708 #endif
709  Result.append(UID.begin(), UID.end());
710 }
711 
712 static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
713  const InputInfo &Output, const ArgList &Args,
714  ArgStringList &CmdArgs) {
715 
716  auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
717  options::OPT_fprofile_generate_EQ,
718  options::OPT_fno_profile_generate);
719  if (PGOGenerateArg &&
720  PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
721  PGOGenerateArg = nullptr;
722 
723  auto *ProfileGenerateArg = Args.getLastArg(
724  options::OPT_fprofile_instr_generate,
725  options::OPT_fprofile_instr_generate_EQ,
726  options::OPT_fno_profile_instr_generate);
727  if (ProfileGenerateArg &&
728  ProfileGenerateArg->getOption().matches(
729  options::OPT_fno_profile_instr_generate))
730  ProfileGenerateArg = nullptr;
731 
732  if (PGOGenerateArg && ProfileGenerateArg)
733  D.Diag(diag::err_drv_argument_not_allowed_with)
734  << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
735 
736  auto *ProfileUseArg = getLastProfileUseArg(Args);
737 
738  if (PGOGenerateArg && ProfileUseArg)
739  D.Diag(diag::err_drv_argument_not_allowed_with)
740  << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
741 
742  if (ProfileGenerateArg && ProfileUseArg)
743  D.Diag(diag::err_drv_argument_not_allowed_with)
744  << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
745 
746  if (ProfileGenerateArg) {
747  if (ProfileGenerateArg->getOption().matches(
748  options::OPT_fprofile_instr_generate_EQ))
749  CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
750  ProfileGenerateArg->getValue()));
751  // The default is to use Clang Instrumentation.
752  CmdArgs.push_back("-fprofile-instrument=clang");
753  }
754 
755  if (PGOGenerateArg) {
756  CmdArgs.push_back("-fprofile-instrument=llvm");
757  if (PGOGenerateArg->getOption().matches(
758  options::OPT_fprofile_generate_EQ)) {
759  SmallString<128> Path(PGOGenerateArg->getValue());
760  llvm::sys::path::append(Path, "default_%m.profraw");
761  CmdArgs.push_back(
762  Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
763  }
764  }
765 
766  if (ProfileUseArg) {
767  if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
768  CmdArgs.push_back(Args.MakeArgString(
769  Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
770  else if ((ProfileUseArg->getOption().matches(
771  options::OPT_fprofile_use_EQ) ||
772  ProfileUseArg->getOption().matches(
773  options::OPT_fprofile_instr_use))) {
774  SmallString<128> Path(
775  ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
776  if (Path.empty() || llvm::sys::fs::is_directory(Path))
777  llvm::sys::path::append(Path, "default.profdata");
778  CmdArgs.push_back(
779  Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
780  }
781  }
782 
783  if (Args.hasArg(options::OPT_ftest_coverage) ||
784  Args.hasArg(options::OPT_coverage))
785  CmdArgs.push_back("-femit-coverage-notes");
786  if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
787  false) ||
788  Args.hasArg(options::OPT_coverage))
789  CmdArgs.push_back("-femit-coverage-data");
790 
791  if (Args.hasFlag(options::OPT_fcoverage_mapping,
792  options::OPT_fno_coverage_mapping, false)) {
793  if (!ProfileGenerateArg)
794  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
795  << "-fcoverage-mapping"
796  << "-fprofile-instr-generate";
797 
798  CmdArgs.push_back("-fcoverage-mapping");
799  }
800 
801  if (C.getArgs().hasArg(options::OPT_c) ||
802  C.getArgs().hasArg(options::OPT_S)) {
803  if (Output.isFilename()) {
804  CmdArgs.push_back("-coverage-notes-file");
805  SmallString<128> OutputFilename;
806  if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
807  OutputFilename = FinalOutput->getValue();
808  else
809  OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
810  SmallString<128> CoverageFilename = OutputFilename;
811  if (llvm::sys::path::is_relative(CoverageFilename)) {
812  SmallString<128> Pwd;
813  if (!llvm::sys::fs::current_path(Pwd)) {
814  llvm::sys::path::append(Pwd, CoverageFilename);
815  CoverageFilename.swap(Pwd);
816  }
817  }
818  llvm::sys::path::replace_extension(CoverageFilename, "gcno");
819  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
820 
821  // Leave -fprofile-dir= an unused argument unless .gcda emission is
822  // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
823  // the flag used. There is no -fno-profile-dir, so the user has no
824  // targeted way to suppress the warning.
825  if (Args.hasArg(options::OPT_fprofile_arcs) ||
826  Args.hasArg(options::OPT_coverage)) {
827  CmdArgs.push_back("-coverage-data-file");
828  if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
829  CoverageFilename = FProfileDir->getValue();
830  llvm::sys::path::append(CoverageFilename, OutputFilename);
831  }
832  llvm::sys::path::replace_extension(CoverageFilename, "gcda");
833  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
834  }
835  }
836  }
837 }
838 
839 /// \brief Check whether the given input tree contains any compilation actions.
840 static bool ContainsCompileAction(const Action *A) {
841  if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
842  return true;
843 
844  for (const auto &AI : A->inputs())
845  if (ContainsCompileAction(AI))
846  return true;
847 
848  return false;
849 }
850 
851 /// \brief Check if -relax-all should be passed to the internal assembler.
852 /// This is done by default when compiling non-assembler source with -O0.
853 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
854  bool RelaxDefault = true;
855 
856  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
857  RelaxDefault = A->getOption().matches(options::OPT_O0);
858 
859  if (RelaxDefault) {
860  RelaxDefault = false;
861  for (const auto &Act : C.getActions()) {
862  if (ContainsCompileAction(Act)) {
863  RelaxDefault = true;
864  break;
865  }
866  }
867  }
868 
869  return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
870  RelaxDefault);
871 }
872 
873 // Extract the integer N from a string spelled "-dwarf-N", returning 0
874 // on mismatch. The StringRef input (rather than an Arg) allows
875 // for use by the "-Xassembler" option parser.
876 static unsigned DwarfVersionNum(StringRef ArgValue) {
877  return llvm::StringSwitch<unsigned>(ArgValue)
878  .Case("-gdwarf-2", 2)
879  .Case("-gdwarf-3", 3)
880  .Case("-gdwarf-4", 4)
881  .Case("-gdwarf-5", 5)
882  .Default(0);
883 }
884 
885 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
887  unsigned DwarfVersion,
888  llvm::DebuggerKind DebuggerTuning) {
889  switch (DebugInfoKind) {
891  CmdArgs.push_back("-debug-info-kind=line-tables-only");
892  break;
894  CmdArgs.push_back("-debug-info-kind=limited");
895  break;
897  CmdArgs.push_back("-debug-info-kind=standalone");
898  break;
899  default:
900  break;
901  }
902  if (DwarfVersion > 0)
903  CmdArgs.push_back(
904  Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
905  switch (DebuggerTuning) {
906  case llvm::DebuggerKind::GDB:
907  CmdArgs.push_back("-debugger-tuning=gdb");
908  break;
909  case llvm::DebuggerKind::LLDB:
910  CmdArgs.push_back("-debugger-tuning=lldb");
911  break;
912  case llvm::DebuggerKind::SCE:
913  CmdArgs.push_back("-debugger-tuning=sce");
914  break;
915  default:
916  break;
917  }
918 }
919 
920 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
921  ArgStringList &CmdArgs,
922  const Driver &D) {
923  const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
924  if (!A)
925  return;
926 
927  if (A->getOption().getID() == options::OPT_gz) {
928  if (llvm::zlib::isAvailable())
929  CmdArgs.push_back("-compress-debug-sections");
930  else
931  D.Diag(diag::warn_debug_compression_unavailable);
932  return;
933  }
934 
935  StringRef Value = A->getValue();
936  if (Value == "none") {
937  CmdArgs.push_back("-compress-debug-sections=none");
938  } else if (Value == "zlib" || Value == "zlib-gnu") {
939  if (llvm::zlib::isAvailable()) {
940  CmdArgs.push_back(
941  Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
942  } else {
943  D.Diag(diag::warn_debug_compression_unavailable);
944  }
945  } else {
946  D.Diag(diag::err_drv_unsupported_option_argument)
947  << A->getOption().getName() << Value;
948  }
949 }
950 
951 static const char *RelocationModelName(llvm::Reloc::Model Model) {
952  switch (Model) {
953  case llvm::Reloc::Static:
954  return "static";
955  case llvm::Reloc::PIC_:
956  return "pic";
957  case llvm::Reloc::DynamicNoPIC:
958  return "dynamic-no-pic";
959  case llvm::Reloc::ROPI:
960  return "ropi";
961  case llvm::Reloc::RWPI:
962  return "rwpi";
963  case llvm::Reloc::ROPI_RWPI:
964  return "ropi-rwpi";
965  }
966  llvm_unreachable("Unknown Reloc::Model kind");
967 }
968 
969 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
970  const Driver &D, const ArgList &Args,
971  ArgStringList &CmdArgs,
972  const InputInfo &Output,
973  const InputInfoList &Inputs) const {
974  Arg *A;
975  const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
976 
977  CheckPreprocessingOptions(D, Args);
978 
979  Args.AddLastArg(CmdArgs, options::OPT_C);
980  Args.AddLastArg(CmdArgs, options::OPT_CC);
981 
982  // Handle dependency file generation.
983  if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
984  (A = Args.getLastArg(options::OPT_MD)) ||
985  (A = Args.getLastArg(options::OPT_MMD))) {
986  // Determine the output location.
987  const char *DepFile;
988  if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
989  DepFile = MF->getValue();
990  C.addFailureResultFile(DepFile, &JA);
991  } else if (Output.getType() == types::TY_Dependencies) {
992  DepFile = Output.getFilename();
993  } else if (A->getOption().matches(options::OPT_M) ||
994  A->getOption().matches(options::OPT_MM)) {
995  DepFile = "-";
996  } else {
997  DepFile = getDependencyFileName(Args, Inputs);
998  C.addFailureResultFile(DepFile, &JA);
999  }
1000  CmdArgs.push_back("-dependency-file");
1001  CmdArgs.push_back(DepFile);
1002 
1003  // Add a default target if one wasn't specified.
1004  if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
1005  const char *DepTarget;
1006 
1007  // If user provided -o, that is the dependency target, except
1008  // when we are only generating a dependency file.
1009  Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1010  if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1011  DepTarget = OutputOpt->getValue();
1012  } else {
1013  // Otherwise derive from the base input.
1014  //
1015  // FIXME: This should use the computed output file location.
1016  SmallString<128> P(Inputs[0].getBaseInput());
1017  llvm::sys::path::replace_extension(P, "o");
1018  DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1019  }
1020 
1021  if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1022  CmdArgs.push_back("-w");
1023  }
1024  CmdArgs.push_back("-MT");
1026  QuoteTarget(DepTarget, Quoted);
1027  CmdArgs.push_back(Args.MakeArgString(Quoted));
1028  }
1029 
1030  if (A->getOption().matches(options::OPT_M) ||
1031  A->getOption().matches(options::OPT_MD))
1032  CmdArgs.push_back("-sys-header-deps");
1033  if ((isa<PrecompileJobAction>(JA) &&
1034  !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1035  Args.hasArg(options::OPT_fmodule_file_deps))
1036  CmdArgs.push_back("-module-file-deps");
1037  }
1038 
1039  if (Args.hasArg(options::OPT_MG)) {
1040  if (!A || A->getOption().matches(options::OPT_MD) ||
1041  A->getOption().matches(options::OPT_MMD))
1042  D.Diag(diag::err_drv_mg_requires_m_or_mm);
1043  CmdArgs.push_back("-MG");
1044  }
1045 
1046  Args.AddLastArg(CmdArgs, options::OPT_MP);
1047  Args.AddLastArg(CmdArgs, options::OPT_MV);
1048 
1049  // Convert all -MQ <target> args to -MT <quoted target>
1050  for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1051  A->claim();
1052 
1053  if (A->getOption().matches(options::OPT_MQ)) {
1054  CmdArgs.push_back("-MT");
1056  QuoteTarget(A->getValue(), Quoted);
1057  CmdArgs.push_back(Args.MakeArgString(Quoted));
1058 
1059  // -MT flag - no change
1060  } else {
1061  A->render(Args, CmdArgs);
1062  }
1063  }
1064 
1065  // Add offload include arguments specific for CUDA. This must happen before
1066  // we -I or -include anything else, because we must pick up the CUDA headers
1067  // from the particular CUDA installation, rather than from e.g.
1068  // /usr/local/include.
1070  getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1071 
1072  // Add -i* options, and automatically translate to
1073  // -include-pch/-include-pth for transparent PCH support. It's
1074  // wonky, but we include looking for .gch so we can support seamless
1075  // replacement into a build system already set up to be generating
1076  // .gch files.
1077  int YcIndex = -1, YuIndex = -1;
1078  {
1079  int AI = -1;
1080  const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1081  const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1082  for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1083  // Walk the whole i_Group and skip non "-include" flags so that the index
1084  // here matches the index in the next loop below.
1085  ++AI;
1086  if (!A->getOption().matches(options::OPT_include))
1087  continue;
1088  if (YcArg && strcmp(A->getValue(), YcArg->getValue()) == 0)
1089  YcIndex = AI;
1090  if (YuArg && strcmp(A->getValue(), YuArg->getValue()) == 0)
1091  YuIndex = AI;
1092  }
1093  }
1094  if (isa<PrecompileJobAction>(JA) && YcIndex != -1) {
1095  Driver::InputList Inputs;
1096  D.BuildInputs(getToolChain(), C.getArgs(), Inputs);
1097  assert(Inputs.size() == 1 && "Need one input when building pch");
1098  CmdArgs.push_back(Args.MakeArgString(Twine("-find-pch-source=") +
1099  Inputs[0].second->getValue()));
1100  }
1101 
1102  bool RenderedImplicitInclude = false;
1103  int AI = -1;
1104  for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1105  ++AI;
1106 
1107  if (getToolChain().getDriver().IsCLMode() &&
1108  A->getOption().matches(options::OPT_include)) {
1109  // In clang-cl mode, /Ycfoo.h means that all code up to a foo.h
1110  // include is compiled into foo.h, and everything after goes into
1111  // the .obj file. /Yufoo.h means that all includes prior to and including
1112  // foo.h are completely skipped and replaced with a use of the pch file
1113  // for foo.h. (Each flag can have at most one value, multiple /Yc flags
1114  // just mean that the last one wins.) If /Yc and /Yu are both present
1115  // and refer to the same file, /Yc wins.
1116  // Note that OPT__SLASH_FI gets mapped to OPT_include.
1117  // FIXME: The code here assumes that /Yc and /Yu refer to the same file.
1118  // cl.exe seems to support both flags with different values, but that
1119  // seems strange (which flag does /Fp now refer to?), so don't implement
1120  // that until someone needs it.
1121  int PchIndex = YcIndex != -1 ? YcIndex : YuIndex;
1122  if (PchIndex != -1) {
1123  if (isa<PrecompileJobAction>(JA)) {
1124  // When building the pch, skip all includes after the pch.
1125  assert(YcIndex != -1 && PchIndex == YcIndex);
1126  if (AI >= YcIndex)
1127  continue;
1128  } else {
1129  // When using the pch, skip all includes prior to the pch.
1130  if (AI < PchIndex) {
1131  A->claim();
1132  continue;
1133  }
1134  if (AI == PchIndex) {
1135  A->claim();
1136  CmdArgs.push_back("-include-pch");
1137  CmdArgs.push_back(
1138  Args.MakeArgString(D.GetClPchPath(C, A->getValue())));
1139  continue;
1140  }
1141  }
1142  }
1143  } else if (A->getOption().matches(options::OPT_include)) {
1144  // Handling of gcc-style gch precompiled headers.
1145  bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1146  RenderedImplicitInclude = true;
1147 
1148  // Use PCH if the user requested it.
1149  bool UsePCH = D.CCCUsePCH;
1150 
1151  bool FoundPTH = false;
1152  bool FoundPCH = false;
1153  SmallString<128> P(A->getValue());
1154  // We want the files to have a name like foo.h.pch. Add a dummy extension
1155  // so that replace_extension does the right thing.
1156  P += ".dummy";
1157  if (UsePCH) {
1158  llvm::sys::path::replace_extension(P, "pch");
1159  if (llvm::sys::fs::exists(P))
1160  FoundPCH = true;
1161  }
1162 
1163  if (!FoundPCH) {
1164  llvm::sys::path::replace_extension(P, "pth");
1165  if (llvm::sys::fs::exists(P))
1166  FoundPTH = true;
1167  }
1168 
1169  if (!FoundPCH && !FoundPTH) {
1170  llvm::sys::path::replace_extension(P, "gch");
1171  if (llvm::sys::fs::exists(P)) {
1172  FoundPCH = UsePCH;
1173  FoundPTH = !UsePCH;
1174  }
1175  }
1176 
1177  if (FoundPCH || FoundPTH) {
1178  if (IsFirstImplicitInclude) {
1179  A->claim();
1180  if (UsePCH)
1181  CmdArgs.push_back("-include-pch");
1182  else
1183  CmdArgs.push_back("-include-pth");
1184  CmdArgs.push_back(Args.MakeArgString(P));
1185  continue;
1186  } else {
1187  // Ignore the PCH if not first on command line and emit warning.
1188  D.Diag(diag::warn_drv_pch_not_first_include) << P
1189  << A->getAsString(Args);
1190  }
1191  }
1192  } else if (A->getOption().matches(options::OPT_isystem_after)) {
1193  // Handling of paths which must come late. These entries are handled by
1194  // the toolchain itself after the resource dir is inserted in the right
1195  // search order.
1196  // Do not claim the argument so that the use of the argument does not
1197  // silently go unnoticed on toolchains which do not honour the option.
1198  continue;
1199  }
1200 
1201  // Not translated, render as usual.
1202  A->claim();
1203  A->render(Args, CmdArgs);
1204  }
1205 
1206  Args.AddAllArgs(CmdArgs,
1207  {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1208  options::OPT_F, options::OPT_index_header_map});
1209 
1210  // Add -Wp, and -Xpreprocessor if using the preprocessor.
1211 
1212  // FIXME: There is a very unfortunate problem here, some troubled
1213  // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1214  // really support that we would have to parse and then translate
1215  // those options. :(
1216  Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1217  options::OPT_Xpreprocessor);
1218 
1219  // -I- is a deprecated GCC feature, reject it.
1220  if (Arg *A = Args.getLastArg(options::OPT_I_))
1221  D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1222 
1223  // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1224  // -isysroot to the CC1 invocation.
1225  StringRef sysroot = C.getSysRoot();
1226  if (sysroot != "") {
1227  if (!Args.hasArg(options::OPT_isysroot)) {
1228  CmdArgs.push_back("-isysroot");
1229  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1230  }
1231  }
1232 
1233  // Parse additional include paths from environment variables.
1234  // FIXME: We should probably sink the logic for handling these from the
1235  // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1236  // CPATH - included following the user specified includes (but prior to
1237  // builtin and standard includes).
1238  addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1239  // C_INCLUDE_PATH - system includes enabled when compiling C.
1240  addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1241  // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1242  addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1243  // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1244  addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1245  // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1246  addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1247 
1248  // While adding the include arguments, we also attempt to retrieve the
1249  // arguments of related offloading toolchains or arguments that are specific
1250  // of an offloading programming model.
1251 
1252  // Add C++ include arguments, if needed.
1253  if (types::isCXX(Inputs[0].getType()))
1254  forAllAssociatedToolChains(C, JA, getToolChain(),
1255  [&Args, &CmdArgs](const ToolChain &TC) {
1256  TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1257  });
1258 
1259  // Add system include arguments for all targets but IAMCU.
1260  if (!IsIAMCU)
1261  forAllAssociatedToolChains(C, JA, getToolChain(),
1262  [&Args, &CmdArgs](const ToolChain &TC) {
1263  TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1264  });
1265  else {
1266  // For IAMCU add special include arguments.
1267  getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1268  }
1269 }
1270 
1271 // FIXME: Move to target hook.
1272 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1273  switch (Triple.getArch()) {
1274  default:
1275  return true;
1276 
1277  case llvm::Triple::aarch64:
1278  case llvm::Triple::aarch64_be:
1279  case llvm::Triple::arm:
1280  case llvm::Triple::armeb:
1281  case llvm::Triple::thumb:
1282  case llvm::Triple::thumbeb:
1283  if (Triple.isOSDarwin() || Triple.isOSWindows())
1284  return true;
1285  return false;
1286 
1287  case llvm::Triple::ppc:
1288  case llvm::Triple::ppc64:
1289  if (Triple.isOSDarwin())
1290  return true;
1291  return false;
1292 
1293  case llvm::Triple::hexagon:
1294  case llvm::Triple::ppc64le:
1295  case llvm::Triple::systemz:
1296  case llvm::Triple::xcore:
1297  return false;
1298  }
1299 }
1300 
1301 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1302  switch (Triple.getArch()) {
1303  default:
1304  return false;
1305 
1306  case llvm::Triple::xcore:
1307  case llvm::Triple::wasm32:
1308  case llvm::Triple::wasm64:
1309  return true;
1310  }
1311 }
1312 
1313 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1314  ArgStringList &CmdArgs, bool KernelOrKext) const {
1315  // Select the ABI to use.
1316  // FIXME: Support -meabi.
1317  // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1318  const char *ABIName = nullptr;
1319  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1320  ABIName = A->getValue();
1321  else {
1322  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1323  ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1324  }
1325 
1326  CmdArgs.push_back("-target-abi");
1327  CmdArgs.push_back(ABIName);
1328 
1329  // Determine floating point ABI from the options & target defaults.
1330  arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1331  if (ABI == arm::FloatABI::Soft) {
1332  // Floating point operations and argument passing are soft.
1333  // FIXME: This changes CPP defines, we need -target-soft-float.
1334  CmdArgs.push_back("-msoft-float");
1335  CmdArgs.push_back("-mfloat-abi");
1336  CmdArgs.push_back("soft");
1337  } else if (ABI == arm::FloatABI::SoftFP) {
1338  // Floating point operations are hard, but argument passing is soft.
1339  CmdArgs.push_back("-mfloat-abi");
1340  CmdArgs.push_back("soft");
1341  } else {
1342  // Floating point operations and argument passing are hard.
1343  assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1344  CmdArgs.push_back("-mfloat-abi");
1345  CmdArgs.push_back("hard");
1346  }
1347 
1348  // Forward the -mglobal-merge option for explicit control over the pass.
1349  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1350  options::OPT_mno_global_merge)) {
1351  CmdArgs.push_back("-backend-option");
1352  if (A->getOption().matches(options::OPT_mno_global_merge))
1353  CmdArgs.push_back("-arm-global-merge=false");
1354  else
1355  CmdArgs.push_back("-arm-global-merge=true");
1356  }
1357 
1358  if (!Args.hasFlag(options::OPT_mimplicit_float,
1359  options::OPT_mno_implicit_float, true))
1360  CmdArgs.push_back("-no-implicit-float");
1361 }
1362 
1363 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1364  ArgStringList &CmdArgs) const {
1365  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1366 
1367  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1368  Args.hasArg(options::OPT_mkernel) ||
1369  Args.hasArg(options::OPT_fapple_kext))
1370  CmdArgs.push_back("-disable-red-zone");
1371 
1372  if (!Args.hasFlag(options::OPT_mimplicit_float,
1373  options::OPT_mno_implicit_float, true))
1374  CmdArgs.push_back("-no-implicit-float");
1375 
1376  const char *ABIName = nullptr;
1377  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1378  ABIName = A->getValue();
1379  else if (Triple.isOSDarwin())
1380  ABIName = "darwinpcs";
1381  else
1382  ABIName = "aapcs";
1383 
1384  CmdArgs.push_back("-target-abi");
1385  CmdArgs.push_back(ABIName);
1386 
1387  if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1388  options::OPT_mno_fix_cortex_a53_835769)) {
1389  CmdArgs.push_back("-backend-option");
1390  if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1391  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1392  else
1393  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1394  } else if (Triple.isAndroid()) {
1395  // Enabled A53 errata (835769) workaround by default on android
1396  CmdArgs.push_back("-backend-option");
1397  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1398  }
1399 
1400  // Forward the -mglobal-merge option for explicit control over the pass.
1401  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1402  options::OPT_mno_global_merge)) {
1403  CmdArgs.push_back("-backend-option");
1404  if (A->getOption().matches(options::OPT_mno_global_merge))
1405  CmdArgs.push_back("-aarch64-enable-global-merge=false");
1406  else
1407  CmdArgs.push_back("-aarch64-enable-global-merge=true");
1408  }
1409 }
1410 
1411 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1412  ArgStringList &CmdArgs) const {
1413  const Driver &D = getToolChain().getDriver();
1414  StringRef CPUName;
1415  StringRef ABIName;
1416  const llvm::Triple &Triple = getToolChain().getTriple();
1417  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1418 
1419  CmdArgs.push_back("-target-abi");
1420  CmdArgs.push_back(ABIName.data());
1421 
1422  mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1423  if (ABI == mips::FloatABI::Soft) {
1424  // Floating point operations and argument passing are soft.
1425  CmdArgs.push_back("-msoft-float");
1426  CmdArgs.push_back("-mfloat-abi");
1427  CmdArgs.push_back("soft");
1428  } else {
1429  // Floating point operations and argument passing are hard.
1430  assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1431  CmdArgs.push_back("-mfloat-abi");
1432  CmdArgs.push_back("hard");
1433  }
1434 
1435  if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1436  if (A->getOption().matches(options::OPT_mxgot)) {
1437  CmdArgs.push_back("-mllvm");
1438  CmdArgs.push_back("-mxgot");
1439  }
1440  }
1441 
1442  if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1443  options::OPT_mno_ldc1_sdc1)) {
1444  if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1445  CmdArgs.push_back("-mllvm");
1446  CmdArgs.push_back("-mno-ldc1-sdc1");
1447  }
1448  }
1449 
1450  if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1451  options::OPT_mno_check_zero_division)) {
1452  if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1453  CmdArgs.push_back("-mllvm");
1454  CmdArgs.push_back("-mno-check-zero-division");
1455  }
1456  }
1457 
1458  if (Arg *A = Args.getLastArg(options::OPT_G)) {
1459  StringRef v = A->getValue();
1460  CmdArgs.push_back("-mllvm");
1461  CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1462  A->claim();
1463  }
1464 
1465  if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1466  StringRef Val = StringRef(A->getValue());
1467  if (mips::hasCompactBranches(CPUName)) {
1468  if (Val == "never" || Val == "always" || Val == "optimal") {
1469  CmdArgs.push_back("-mllvm");
1470  CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1471  } else
1472  D.Diag(diag::err_drv_unsupported_option_argument)
1473  << A->getOption().getName() << Val;
1474  } else
1475  D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1476  }
1477 }
1478 
1479 void Clang::AddPPCTargetArgs(const ArgList &Args,
1480  ArgStringList &CmdArgs) const {
1481  // Select the ABI to use.
1482  const char *ABIName = nullptr;
1483  if (getToolChain().getTriple().isOSLinux())
1484  switch (getToolChain().getArch()) {
1485  case llvm::Triple::ppc64: {
1486  // When targeting a processor that supports QPX, or if QPX is
1487  // specifically enabled, default to using the ABI that supports QPX (so
1488  // long as it is not specifically disabled).
1489  bool HasQPX = false;
1490  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1491  HasQPX = A->getValue() == StringRef("a2q");
1492  HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1493  if (HasQPX) {
1494  ABIName = "elfv1-qpx";
1495  break;
1496  }
1497 
1498  ABIName = "elfv1";
1499  break;
1500  }
1501  case llvm::Triple::ppc64le:
1502  ABIName = "elfv2";
1503  break;
1504  default:
1505  break;
1506  }
1507 
1508  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1509  // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1510  // the option if given as we don't have backend support for any targets
1511  // that don't use the altivec abi.
1512  if (StringRef(A->getValue()) != "altivec")
1513  ABIName = A->getValue();
1514 
1516  ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1517 
1518  if (FloatABI == ppc::FloatABI::Soft) {
1519  // Floating point operations and argument passing are soft.
1520  CmdArgs.push_back("-msoft-float");
1521  CmdArgs.push_back("-mfloat-abi");
1522  CmdArgs.push_back("soft");
1523  } else {
1524  // Floating point operations and argument passing are hard.
1525  assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1526  CmdArgs.push_back("-mfloat-abi");
1527  CmdArgs.push_back("hard");
1528  }
1529 
1530  if (ABIName) {
1531  CmdArgs.push_back("-target-abi");
1532  CmdArgs.push_back(ABIName);
1533  }
1534 }
1535 
1536 void Clang::AddSparcTargetArgs(const ArgList &Args,
1537  ArgStringList &CmdArgs) const {
1538  sparc::FloatABI FloatABI =
1539  sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1540 
1541  if (FloatABI == sparc::FloatABI::Soft) {
1542  // Floating point operations and argument passing are soft.
1543  CmdArgs.push_back("-msoft-float");
1544  CmdArgs.push_back("-mfloat-abi");
1545  CmdArgs.push_back("soft");
1546  } else {
1547  // Floating point operations and argument passing are hard.
1548  assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1549  CmdArgs.push_back("-mfloat-abi");
1550  CmdArgs.push_back("hard");
1551  }
1552 }
1553 
1554 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1555  ArgStringList &CmdArgs) const {
1556  if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1557  CmdArgs.push_back("-mbackchain");
1558 }
1559 
1560 void Clang::AddX86TargetArgs(const ArgList &Args,
1561  ArgStringList &CmdArgs) const {
1562  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1563  Args.hasArg(options::OPT_mkernel) ||
1564  Args.hasArg(options::OPT_fapple_kext))
1565  CmdArgs.push_back("-disable-red-zone");
1566 
1567  // Default to avoid implicit floating-point for kernel/kext code, but allow
1568  // that to be overridden with -mno-soft-float.
1569  bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1570  Args.hasArg(options::OPT_fapple_kext));
1571  if (Arg *A = Args.getLastArg(
1572  options::OPT_msoft_float, options::OPT_mno_soft_float,
1573  options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1574  const Option &O = A->getOption();
1575  NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1576  O.matches(options::OPT_msoft_float));
1577  }
1578  if (NoImplicitFloat)
1579  CmdArgs.push_back("-no-implicit-float");
1580 
1581  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1582  StringRef Value = A->getValue();
1583  if (Value == "intel" || Value == "att") {
1584  CmdArgs.push_back("-mllvm");
1585  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1586  } else {
1587  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1588  << A->getOption().getName() << Value;
1589  }
1590  }
1591 
1592  // Set flags to support MCU ABI.
1593  if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1594  CmdArgs.push_back("-mfloat-abi");
1595  CmdArgs.push_back("soft");
1596  CmdArgs.push_back("-mstack-alignment=4");
1597  }
1598 }
1599 
1600 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1601  ArgStringList &CmdArgs) const {
1602  CmdArgs.push_back("-mqdsp6-compat");
1603  CmdArgs.push_back("-Wreturn-type");
1604 
1606  std::string N = llvm::utostr(G.getValue());
1607  std::string Opt = std::string("-hexagon-small-data-threshold=") + N;
1608  CmdArgs.push_back("-mllvm");
1609  CmdArgs.push_back(Args.MakeArgString(Opt));
1610  }
1611 
1612  if (!Args.hasArg(options::OPT_fno_short_enums))
1613  CmdArgs.push_back("-fshort-enums");
1614  if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1615  CmdArgs.push_back("-mllvm");
1616  CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1617  }
1618  CmdArgs.push_back("-mllvm");
1619  CmdArgs.push_back("-machine-sink-split=0");
1620 }
1621 
1622 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1623  ArgStringList &CmdArgs) const {
1624  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1625  StringRef CPUName = A->getValue();
1626 
1627  CmdArgs.push_back("-target-cpu");
1628  CmdArgs.push_back(Args.MakeArgString(CPUName));
1629  }
1630  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1631  StringRef Value = A->getValue();
1632  // Only support mregparm=4 to support old usage. Report error for all other
1633  // cases.
1634  int Mregparm;
1635  if (Value.getAsInteger(10, Mregparm)) {
1636  if (Mregparm != 4) {
1637  getToolChain().getDriver().Diag(
1638  diag::err_drv_unsupported_option_argument)
1639  << A->getOption().getName() << Value;
1640  }
1641  }
1642  }
1643 }
1644 
1645 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1646  ArgStringList &CmdArgs) const {
1647  // Default to "hidden" visibility.
1648  if (!Args.hasArg(options::OPT_fvisibility_EQ,
1649  options::OPT_fvisibility_ms_compat)) {
1650  CmdArgs.push_back("-fvisibility");
1651  CmdArgs.push_back("hidden");
1652  }
1653 }
1654 
1655 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1656  StringRef Target, const InputInfo &Output,
1657  const InputInfo &Input, const ArgList &Args) const {
1658  // If this is a dry run, do not create the compilation database file.
1659  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1660  return;
1661 
1662  using llvm::yaml::escape;
1663  const Driver &D = getToolChain().getDriver();
1664 
1665  if (!CompilationDatabase) {
1666  std::error_code EC;
1667  auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1668  if (EC) {
1669  D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1670  << EC.message();
1671  return;
1672  }
1673  CompilationDatabase = std::move(File);
1674  }
1675  auto &CDB = *CompilationDatabase;
1676  SmallString<128> Buf;
1677  if (llvm::sys::fs::current_path(Buf))
1678  Buf = ".";
1679  CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1680  CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1681  CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1682  CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1683  Buf = "-x";
1684  Buf += types::getTypeName(Input.getType());
1685  CDB << ", \"" << escape(Buf) << "\"";
1686  if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1687  Buf = "--sysroot=";
1688  Buf += D.SysRoot;
1689  CDB << ", \"" << escape(Buf) << "\"";
1690  }
1691  CDB << ", \"" << escape(Input.getFilename()) << "\"";
1692  for (auto &A: Args) {
1693  auto &O = A->getOption();
1694  // Skip language selection, which is positional.
1695  if (O.getID() == options::OPT_x)
1696  continue;
1697  // Skip writing dependency output and the compilation database itself.
1698  if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1699  continue;
1700  // Skip inputs.
1701  if (O.getKind() == Option::InputClass)
1702  continue;
1703  // All other arguments are quoted and appended.
1704  ArgStringList ASL;
1705  A->render(Args, ASL);
1706  for (auto &it: ASL)
1707  CDB << ", \"" << escape(it) << "\"";
1708  }
1709  Buf = "--target=";
1710  Buf += Target;
1711  CDB << ", \"" << escape(Buf) << "\"]},\n";
1712 }
1713 
1715  const ArgList &Args,
1716  ArgStringList &CmdArgs,
1717  const Driver &D) {
1718  if (UseRelaxAll(C, Args))
1719  CmdArgs.push_back("-mrelax-all");
1720 
1721  // Only default to -mincremental-linker-compatible if we think we are
1722  // targeting the MSVC linker.
1723  bool DefaultIncrementalLinkerCompatible =
1724  C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1725  if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1726  options::OPT_mno_incremental_linker_compatible,
1727  DefaultIncrementalLinkerCompatible))
1728  CmdArgs.push_back("-mincremental-linker-compatible");
1729 
1730  switch (C.getDefaultToolChain().getArch()) {
1731  case llvm::Triple::arm:
1732  case llvm::Triple::armeb:
1733  case llvm::Triple::thumb:
1734  case llvm::Triple::thumbeb:
1735  if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
1736  StringRef Value = A->getValue();
1737  if (Value == "always" || Value == "never" || Value == "arm" ||
1738  Value == "thumb") {
1739  CmdArgs.push_back("-mllvm");
1740  CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
1741  } else {
1742  D.Diag(diag::err_drv_unsupported_option_argument)
1743  << A->getOption().getName() << Value;
1744  }
1745  }
1746  break;
1747  default:
1748  break;
1749  }
1750 
1751  // When passing -I arguments to the assembler we sometimes need to
1752  // unconditionally take the next argument. For example, when parsing
1753  // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
1754  // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
1755  // arg after parsing the '-I' arg.
1756  bool TakeNextArg = false;
1757 
1758  bool UseRelaxRelocations = ENABLE_X86_RELAX_RELOCATIONS;
1759  const char *MipsTargetFeature = nullptr;
1760  for (const Arg *A :
1761  Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
1762  A->claim();
1763 
1764  for (StringRef Value : A->getValues()) {
1765  if (TakeNextArg) {
1766  CmdArgs.push_back(Value.data());
1767  TakeNextArg = false;
1768  continue;
1769  }
1770 
1771  if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
1772  Value == "-mbig-obj")
1773  continue; // LLVM handles bigobj automatically
1774 
1775  switch (C.getDefaultToolChain().getArch()) {
1776  default:
1777  break;
1778  case llvm::Triple::mips:
1779  case llvm::Triple::mipsel:
1780  case llvm::Triple::mips64:
1781  case llvm::Triple::mips64el:
1782  if (Value == "--trap") {
1783  CmdArgs.push_back("-target-feature");
1784  CmdArgs.push_back("+use-tcc-in-div");
1785  continue;
1786  }
1787  if (Value == "--break") {
1788  CmdArgs.push_back("-target-feature");
1789  CmdArgs.push_back("-use-tcc-in-div");
1790  continue;
1791  }
1792  if (Value.startswith("-msoft-float")) {
1793  CmdArgs.push_back("-target-feature");
1794  CmdArgs.push_back("+soft-float");
1795  continue;
1796  }
1797  if (Value.startswith("-mhard-float")) {
1798  CmdArgs.push_back("-target-feature");
1799  CmdArgs.push_back("-soft-float");
1800  continue;
1801  }
1802 
1803  MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
1804  .Case("-mips1", "+mips1")
1805  .Case("-mips2", "+mips2")
1806  .Case("-mips3", "+mips3")
1807  .Case("-mips4", "+mips4")
1808  .Case("-mips5", "+mips5")
1809  .Case("-mips32", "+mips32")
1810  .Case("-mips32r2", "+mips32r2")
1811  .Case("-mips32r3", "+mips32r3")
1812  .Case("-mips32r5", "+mips32r5")
1813  .Case("-mips32r6", "+mips32r6")
1814  .Case("-mips64", "+mips64")
1815  .Case("-mips64r2", "+mips64r2")
1816  .Case("-mips64r3", "+mips64r3")
1817  .Case("-mips64r5", "+mips64r5")
1818  .Case("-mips64r6", "+mips64r6")
1819  .Default(nullptr);
1820  if (MipsTargetFeature)
1821  continue;
1822  }
1823 
1824  if (Value == "-force_cpusubtype_ALL") {
1825  // Do nothing, this is the default and we don't support anything else.
1826  } else if (Value == "-L") {
1827  CmdArgs.push_back("-msave-temp-labels");
1828  } else if (Value == "--fatal-warnings") {
1829  CmdArgs.push_back("-massembler-fatal-warnings");
1830  } else if (Value == "--noexecstack") {
1831  CmdArgs.push_back("-mnoexecstack");
1832  } else if (Value.startswith("-compress-debug-sections") ||
1833  Value.startswith("--compress-debug-sections") ||
1834  Value == "-nocompress-debug-sections" ||
1835  Value == "--nocompress-debug-sections") {
1836  CmdArgs.push_back(Value.data());
1837  } else if (Value == "-mrelax-relocations=yes" ||
1838  Value == "--mrelax-relocations=yes") {
1839  UseRelaxRelocations = true;
1840  } else if (Value == "-mrelax-relocations=no" ||
1841  Value == "--mrelax-relocations=no") {
1842  UseRelaxRelocations = false;
1843  } else if (Value.startswith("-I")) {
1844  CmdArgs.push_back(Value.data());
1845  // We need to consume the next argument if the current arg is a plain
1846  // -I. The next arg will be the include directory.
1847  if (Value == "-I")
1848  TakeNextArg = true;
1849  } else if (Value.startswith("-gdwarf-")) {
1850  // "-gdwarf-N" options are not cc1as options.
1851  unsigned DwarfVersion = DwarfVersionNum(Value);
1852  if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
1853  CmdArgs.push_back(Value.data());
1854  } else {
1855  RenderDebugEnablingArgs(Args, CmdArgs,
1857  DwarfVersion, llvm::DebuggerKind::Default);
1858  }
1859  } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
1860  Value.startswith("-mhwdiv") || Value.startswith("-march")) {
1861  // Do nothing, we'll validate it later.
1862  } else if (Value == "-defsym") {
1863  if (A->getNumValues() != 2) {
1864  D.Diag(diag::err_drv_defsym_invalid_format) << Value;
1865  break;
1866  }
1867  const char *S = A->getValue(1);
1868  auto Pair = StringRef(S).split('=');
1869  auto Sym = Pair.first;
1870  auto SVal = Pair.second;
1871 
1872  if (Sym.empty() || SVal.empty()) {
1873  D.Diag(diag::err_drv_defsym_invalid_format) << S;
1874  break;
1875  }
1876  int64_t IVal;
1877  if (SVal.getAsInteger(0, IVal)) {
1878  D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
1879  break;
1880  }
1881  CmdArgs.push_back(Value.data());
1882  TakeNextArg = true;
1883  } else {
1884  D.Diag(diag::err_drv_unsupported_option_argument)
1885  << A->getOption().getName() << Value;
1886  }
1887  }
1888  }
1889  if (UseRelaxRelocations)
1890  CmdArgs.push_back("--mrelax-relocations");
1891  if (MipsTargetFeature != nullptr) {
1892  CmdArgs.push_back("-target-feature");
1893  CmdArgs.push_back(MipsTargetFeature);
1894  }
1895 }
1896 
1898  const InputInfo &Output, const InputInfoList &Inputs,
1899  const ArgList &Args, const char *LinkingOutput) const {
1900  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1901  const std::string &TripleStr = Triple.getTriple();
1902 
1903  bool KernelOrKext =
1904  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
1905  const Driver &D = getToolChain().getDriver();
1906  ArgStringList CmdArgs;
1907 
1908  // Check number of inputs for sanity. We need at least one input.
1909  assert(Inputs.size() >= 1 && "Must have at least one input.");
1910  const InputInfo &Input = Inputs[0];
1911  // CUDA compilation may have multiple inputs (source file + results of
1912  // device-side compilations). OpenMP device jobs also take the host IR as a
1913  // second input. All other jobs are expected to have exactly one
1914  // input.
1915  bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
1916  bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
1917  assert((IsCuda || (IsOpenMPDevice && Inputs.size() == 2) ||
1918  Inputs.size() == 1) &&
1919  "Unable to handle multiple inputs.");
1920 
1921  bool IsWindowsGNU = getToolChain().getTriple().isWindowsGNUEnvironment();
1922  bool IsWindowsCygnus =
1923  getToolChain().getTriple().isWindowsCygwinEnvironment();
1924  bool IsWindowsMSVC = getToolChain().getTriple().isWindowsMSVCEnvironment();
1925  bool IsPS4CPU = getToolChain().getTriple().isPS4CPU();
1926  bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
1927 
1928  // Adjust IsWindowsXYZ for CUDA compilations. Even when compiling in device
1929  // mode (i.e., getToolchain().getTriple() is NVPTX, not Windows), we need to
1930  // pass Windows-specific flags to cc1.
1931  if (IsCuda) {
1932  const llvm::Triple *AuxTriple = getToolChain().getAuxTriple();
1933  IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
1934  IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
1935  IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
1936  }
1937 
1938  // C++ is not supported for IAMCU.
1939  if (IsIAMCU && types::isCXX(Input.getType()))
1940  D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
1941 
1942  // Invoke ourselves in -cc1 mode.
1943  //
1944  // FIXME: Implement custom jobs for internal actions.
1945  CmdArgs.push_back("-cc1");
1946 
1947  // Add the "effective" target triple.
1948  CmdArgs.push_back("-triple");
1949  CmdArgs.push_back(Args.MakeArgString(TripleStr));
1950 
1951  if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
1952  DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
1953  Args.ClaimAllArgs(options::OPT_MJ);
1954  }
1955 
1956  if (IsCuda) {
1957  // We have to pass the triple of the host if compiling for a CUDA device and
1958  // vice-versa.
1959  std::string NormalizedTriple;
1961  NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
1962  ->getTriple()
1963  .normalize();
1964  else
1965  NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Cuda>()
1966  ->getTriple()
1967  .normalize();
1968 
1969  CmdArgs.push_back("-aux-triple");
1970  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
1971  }
1972 
1973  if (IsOpenMPDevice) {
1974  // We have to pass the triple of the host if compiling for an OpenMP device.
1975  std::string NormalizedTriple =
1977  ->getTriple()
1978  .normalize();
1979  CmdArgs.push_back("-aux-triple");
1980  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
1981  }
1982 
1983  if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
1984  Triple.getArch() == llvm::Triple::thumb)) {
1985  unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
1986  unsigned Version;
1987  Triple.getArchName().substr(Offset).getAsInteger(10, Version);
1988  if (Version < 7)
1989  D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
1990  << TripleStr;
1991  }
1992 
1993  // Push all default warning arguments that are specific to
1994  // the given target. These come before user provided warning options
1995  // are provided.
1996  getToolChain().addClangWarningOptions(CmdArgs);
1997 
1998  // Select the appropriate action.
1999  RewriteKind rewriteKind = RK_None;
2000 
2001  if (isa<AnalyzeJobAction>(JA)) {
2002  assert(JA.getType() == types::TY_Plist && "Invalid output type.");
2003  CmdArgs.push_back("-analyze");
2004  } else if (isa<MigrateJobAction>(JA)) {
2005  CmdArgs.push_back("-migrate");
2006  } else if (isa<PreprocessJobAction>(JA)) {
2007  if (Output.getType() == types::TY_Dependencies)
2008  CmdArgs.push_back("-Eonly");
2009  else {
2010  CmdArgs.push_back("-E");
2011  if (Args.hasArg(options::OPT_rewrite_objc) &&
2012  !Args.hasArg(options::OPT_g_Group))
2013  CmdArgs.push_back("-P");
2014  }
2015  } else if (isa<AssembleJobAction>(JA)) {
2016  CmdArgs.push_back("-emit-obj");
2017 
2018  CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
2019 
2020  // Also ignore explicit -force_cpusubtype_ALL option.
2021  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
2022  } else if (isa<PrecompileJobAction>(JA)) {
2023  // Use PCH if the user requested it.
2024  bool UsePCH = D.CCCUsePCH;
2025 
2026  if (JA.getType() == types::TY_Nothing)
2027  CmdArgs.push_back("-fsyntax-only");
2028  else if (JA.getType() == types::TY_ModuleFile)
2029  CmdArgs.push_back("-emit-module-interface");
2030  else if (UsePCH)
2031  CmdArgs.push_back("-emit-pch");
2032  else
2033  CmdArgs.push_back("-emit-pth");
2034  } else if (isa<VerifyPCHJobAction>(JA)) {
2035  CmdArgs.push_back("-verify-pch");
2036  } else {
2037  assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
2038  "Invalid action for clang tool.");
2039  if (JA.getType() == types::TY_Nothing) {
2040  CmdArgs.push_back("-fsyntax-only");
2041  } else if (JA.getType() == types::TY_LLVM_IR ||
2042  JA.getType() == types::TY_LTO_IR) {
2043  CmdArgs.push_back("-emit-llvm");
2044  } else if (JA.getType() == types::TY_LLVM_BC ||
2045  JA.getType() == types::TY_LTO_BC) {
2046  CmdArgs.push_back("-emit-llvm-bc");
2047  } else if (JA.getType() == types::TY_PP_Asm) {
2048  CmdArgs.push_back("-S");
2049  } else if (JA.getType() == types::TY_AST) {
2050  CmdArgs.push_back("-emit-pch");
2051  } else if (JA.getType() == types::TY_ModuleFile) {
2052  CmdArgs.push_back("-module-file-info");
2053  } else if (JA.getType() == types::TY_RewrittenObjC) {
2054  CmdArgs.push_back("-rewrite-objc");
2055  rewriteKind = RK_NonFragile;
2056  } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
2057  CmdArgs.push_back("-rewrite-objc");
2058  rewriteKind = RK_Fragile;
2059  } else {
2060  assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
2061  }
2062 
2063  // Preserve use-list order by default when emitting bitcode, so that
2064  // loading the bitcode up in 'opt' or 'llc' and running passes gives the
2065  // same result as running passes here. For LTO, we don't need to preserve
2066  // the use-list order, since serialization to bitcode is part of the flow.
2067  if (JA.getType() == types::TY_LLVM_BC)
2068  CmdArgs.push_back("-emit-llvm-uselists");
2069 
2070  if (D.isUsingLTO()) {
2071  Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
2072 
2073  // The Darwin and PS4 linkers currently use the legacy LTO API, which
2074  // does not support LTO unit features (CFI, whole program vtable opt)
2075  // under ThinLTO.
2076  if (!(getToolChain().getTriple().isOSDarwin() ||
2077  getToolChain().getTriple().isPS4()) ||
2078  D.getLTOMode() == LTOK_Full)
2079  CmdArgs.push_back("-flto-unit");
2080  }
2081  }
2082 
2083  if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
2084  if (!types::isLLVMIR(Input.getType()))
2085  D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
2086  << "-x ir";
2087  Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
2088  }
2089 
2090  // Embed-bitcode option.
2091  if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
2092  (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
2093  // Add flags implied by -fembed-bitcode.
2094  Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2095  // Disable all llvm IR level optimizations.
2096  CmdArgs.push_back("-disable-llvm-passes");
2097  }
2099  CmdArgs.push_back("-fembed-bitcode=marker");
2100 
2101  // We normally speed up the clang process a bit by skipping destructors at
2102  // exit, but when we're generating diagnostics we can rely on some of the
2103  // cleanup.
2104  if (!C.isForDiagnostics())
2105  CmdArgs.push_back("-disable-free");
2106 
2107 // Disable the verification pass in -asserts builds.
2108 #ifdef NDEBUG
2109  CmdArgs.push_back("-disable-llvm-verifier");
2110  // Discard LLVM value names in -asserts builds.
2111  CmdArgs.push_back("-discard-value-names");
2112 #endif
2113 
2114  // Set the main file name, so that debug info works even with
2115  // -save-temps.
2116  CmdArgs.push_back("-main-file-name");
2117  CmdArgs.push_back(getBaseInputName(Args, Input));
2118 
2119  // Some flags which affect the language (via preprocessor
2120  // defines).
2121  if (Args.hasArg(options::OPT_static))
2122  CmdArgs.push_back("-static-define");
2123 
2124  if (isa<AnalyzeJobAction>(JA)) {
2125  // Enable region store model by default.
2126  CmdArgs.push_back("-analyzer-store=region");
2127 
2128  // Treat blocks as analysis entry points.
2129  CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2130 
2131  CmdArgs.push_back("-analyzer-eagerly-assume");
2132 
2133  // Add default argument set.
2134  if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2135  CmdArgs.push_back("-analyzer-checker=core");
2136  CmdArgs.push_back("-analyzer-checker=apiModeling");
2137 
2138  if (!IsWindowsMSVC) {
2139  CmdArgs.push_back("-analyzer-checker=unix");
2140  } else {
2141  // Enable "unix" checkers that also work on Windows.
2142  CmdArgs.push_back("-analyzer-checker=unix.API");
2143  CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2144  CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2145  CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2146  CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2147  CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2148  }
2149 
2150  // Disable some unix checkers for PS4.
2151  if (IsPS4CPU) {
2152  CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2153  CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2154  }
2155 
2156  if (getToolChain().getTriple().getVendor() == llvm::Triple::Apple)
2157  CmdArgs.push_back("-analyzer-checker=osx");
2158 
2159  CmdArgs.push_back("-analyzer-checker=deadcode");
2160 
2161  if (types::isCXX(Input.getType()))
2162  CmdArgs.push_back("-analyzer-checker=cplusplus");
2163 
2164  if (!IsPS4CPU) {
2165  CmdArgs.push_back(
2166  "-analyzer-checker=security.insecureAPI.UncheckedReturn");
2167  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2168  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2169  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2170  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2171  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2172  }
2173 
2174  // Default nullability checks.
2175  CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2176  CmdArgs.push_back(
2177  "-analyzer-checker=nullability.NullReturnedFromNonnull");
2178  }
2179 
2180  // Set the output format. The default is plist, for (lame) historical
2181  // reasons.
2182  CmdArgs.push_back("-analyzer-output");
2183  if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2184  CmdArgs.push_back(A->getValue());
2185  else
2186  CmdArgs.push_back("plist");
2187 
2188  // Disable the presentation of standard compiler warnings when
2189  // using --analyze. We only want to show static analyzer diagnostics
2190  // or frontend errors.
2191  CmdArgs.push_back("-w");
2192 
2193  // Add -Xanalyzer arguments when running as analyzer.
2194  Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2195  }
2196 
2197  CheckCodeGenerationOptions(D, Args);
2198 
2199  llvm::Reloc::Model RelocationModel;
2200  unsigned PICLevel;
2201  bool IsPIE;
2202  std::tie(RelocationModel, PICLevel, IsPIE) =
2203  ParsePICArgs(getToolChain(), Args);
2204 
2205  const char *RMName = RelocationModelName(RelocationModel);
2206 
2207  if ((RelocationModel == llvm::Reloc::ROPI ||
2208  RelocationModel == llvm::Reloc::ROPI_RWPI) &&
2209  types::isCXX(Input.getType()) &&
2210  !Args.hasArg(options::OPT_fallow_unsupported))
2211  D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
2212 
2213  if (RMName) {
2214  CmdArgs.push_back("-mrelocation-model");
2215  CmdArgs.push_back(RMName);
2216  }
2217  if (PICLevel > 0) {
2218  CmdArgs.push_back("-pic-level");
2219  CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
2220  if (IsPIE)
2221  CmdArgs.push_back("-pic-is-pie");
2222  }
2223 
2224  if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
2225  CmdArgs.push_back("-meabi");
2226  CmdArgs.push_back(A->getValue());
2227  }
2228 
2229  CmdArgs.push_back("-mthread-model");
2230  if (Arg *A = Args.getLastArg(options::OPT_mthread_model))
2231  CmdArgs.push_back(A->getValue());
2232  else
2233  CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel()));
2234 
2235  Args.AddLastArg(CmdArgs, options::OPT_fveclib);
2236 
2237  if (!Args.hasFlag(options::OPT_fmerge_all_constants,
2238  options::OPT_fno_merge_all_constants))
2239  CmdArgs.push_back("-fno-merge-all-constants");
2240 
2241  // LLVM Code Generator Options.
2242 
2243  if (Args.hasArg(options::OPT_frewrite_map_file) ||
2244  Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
2245  for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
2246  options::OPT_frewrite_map_file_EQ)) {
2247  StringRef Map = A->getValue();
2248  if (!llvm::sys::fs::exists(Map)) {
2249  D.Diag(diag::err_drv_no_such_file) << Map;
2250  } else {
2251  CmdArgs.push_back("-frewrite-map-file");
2252  CmdArgs.push_back(A->getValue());
2253  A->claim();
2254  }
2255  }
2256  }
2257 
2258  if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
2259  StringRef v = A->getValue();
2260  CmdArgs.push_back("-mllvm");
2261  CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
2262  A->claim();
2263  }
2264 
2265  if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
2266  true))
2267  CmdArgs.push_back("-fno-jump-tables");
2268 
2269  if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
2270  options::OPT_fno_preserve_as_comments, true))
2271  CmdArgs.push_back("-fno-preserve-as-comments");
2272 
2273  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
2274  CmdArgs.push_back("-mregparm");
2275  CmdArgs.push_back(A->getValue());
2276  }
2277 
2278  if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
2279  options::OPT_freg_struct_return)) {
2280  if (getToolChain().getArch() != llvm::Triple::x86) {
2281  D.Diag(diag::err_drv_unsupported_opt_for_target)
2282  << A->getSpelling() << getToolChain().getTriple().str();
2283  } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
2284  CmdArgs.push_back("-fpcc-struct-return");
2285  } else {
2286  assert(A->getOption().matches(options::OPT_freg_struct_return));
2287  CmdArgs.push_back("-freg-struct-return");
2288  }
2289  }
2290 
2291  if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
2292  CmdArgs.push_back("-fdefault-calling-conv=stdcall");
2293 
2294  if (shouldUseFramePointer(Args, getToolChain().getTriple()))
2295  CmdArgs.push_back("-mdisable-fp-elim");
2296  if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
2297  options::OPT_fno_zero_initialized_in_bss))
2298  CmdArgs.push_back("-mno-zero-initialized-in-bss");
2299 
2300  bool OFastEnabled = isOptimizationLevelFast(Args);
2301  // If -Ofast is the optimization level, then -fstrict-aliasing should be
2302  // enabled. This alias option is being used to simplify the hasFlag logic.
2303  OptSpecifier StrictAliasingAliasOption =
2304  OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
2305  // We turn strict aliasing off by default if we're in CL mode, since MSVC
2306  // doesn't do any TBAA.
2307  bool TBAAOnByDefault = !getToolChain().getDriver().IsCLMode();
2308  if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
2309  options::OPT_fno_strict_aliasing, TBAAOnByDefault))
2310  CmdArgs.push_back("-relaxed-aliasing");
2311  if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
2312  options::OPT_fno_struct_path_tbaa))
2313  CmdArgs.push_back("-no-struct-path-tbaa");
2314  if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
2315  false))
2316  CmdArgs.push_back("-fstrict-enums");
2317  if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
2318  true))
2319  CmdArgs.push_back("-fno-strict-return");
2320  if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
2321  options::OPT_fno_allow_editor_placeholders, false))
2322  CmdArgs.push_back("-fallow-editor-placeholders");
2323  if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
2324  options::OPT_fno_strict_vtable_pointers,
2325  false))
2326  CmdArgs.push_back("-fstrict-vtable-pointers");
2327  if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
2328  options::OPT_fno_optimize_sibling_calls))
2329  CmdArgs.push_back("-mdisable-tail-calls");
2330 
2331  // Handle segmented stacks.
2332  if (Args.hasArg(options::OPT_fsplit_stack))
2333  CmdArgs.push_back("-split-stacks");
2334 
2335  // Handle various floating point optimization flags, mapping them to the
2336  // appropriate LLVM code generation flags. This is complicated by several
2337  // "umbrella" flags, so we do this by stepping through the flags incrementally
2338  // adjusting what we think is enabled/disabled, then at the end settting the
2339  // LLVM flags based on the final state.
2340  bool HonorInfs = true;
2341  bool HonorNans = true;
2342  // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2343  bool MathErrno = getToolChain().IsMathErrnoDefault();
2344  bool AssociativeMath = false;
2345  bool ReciprocalMath = false;
2346  bool SignedZeros = true;
2347  bool TrappingMath = true;
2348  StringRef DenormalFpMath = "";
2349  StringRef FpContract = "";
2350 
2351  for (Arg *A : Args) {
2352  switch (A->getOption().getID()) {
2353  // If this isn't an FP option skip the claim below
2354  default:
2355  continue;
2356 
2357  // Options controlling individual features
2358  case options::OPT_fhonor_infinities: HonorInfs = true; break;
2359  case options::OPT_fno_honor_infinities: HonorInfs = false; break;
2360  case options::OPT_fhonor_nans: HonorNans = true; break;
2361  case options::OPT_fno_honor_nans: HonorNans = false; break;
2362  case options::OPT_fmath_errno: MathErrno = true; break;
2363  case options::OPT_fno_math_errno: MathErrno = false; break;
2364  case options::OPT_fassociative_math: AssociativeMath = true; break;
2365  case options::OPT_fno_associative_math: AssociativeMath = false; break;
2366  case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2367  case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2368  case options::OPT_fsigned_zeros: SignedZeros = true; break;
2369  case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2370  case options::OPT_ftrapping_math: TrappingMath = true; break;
2371  case options::OPT_fno_trapping_math: TrappingMath = false; break;
2372 
2373  case options::OPT_fdenormal_fp_math_EQ:
2374  DenormalFpMath = A->getValue();
2375  break;
2376 
2377  // Validate and pass through -fp-contract option.
2378  case options::OPT_ffp_contract: {
2379  StringRef Val = A->getValue();
2380  if (Val == "fast" || Val == "on" || Val == "off") {
2381  FpContract = Val;
2382  } else {
2383  D.Diag(diag::err_drv_unsupported_option_argument)
2384  << A->getOption().getName() << Val;
2385  }
2386  break;
2387  }
2388 
2389  case options::OPT_ffinite_math_only:
2390  HonorInfs = false;
2391  HonorNans = false;
2392  break;
2393  case options::OPT_fno_finite_math_only:
2394  HonorInfs = true;
2395  HonorNans = true;
2396  break;
2397 
2398  case options::OPT_funsafe_math_optimizations:
2399  AssociativeMath = true;
2400  ReciprocalMath = true;
2401  SignedZeros = false;
2402  TrappingMath = false;
2403  break;
2404  case options::OPT_fno_unsafe_math_optimizations:
2405  AssociativeMath = false;
2406  ReciprocalMath = false;
2407  SignedZeros = true;
2408  TrappingMath = true;
2409  // -fno_unsafe_math_optimizations restores default denormal handling
2410  DenormalFpMath = "";
2411  break;
2412 
2413  case options::OPT_Ofast:
2414  // If -Ofast is the optimization level, then -ffast-math should be enabled
2415  if (!OFastEnabled)
2416  continue;
2417  LLVM_FALLTHROUGH;
2418  case options::OPT_ffast_math:
2419  HonorInfs = false;
2420  HonorNans = false;
2421  MathErrno = false;
2422  AssociativeMath = true;
2423  ReciprocalMath = true;
2424  SignedZeros = false;
2425  TrappingMath = false;
2426  // If fast-math is set then set the fp-contract mode to fast.
2427  FpContract = "fast";
2428  break;
2429  case options::OPT_fno_fast_math:
2430  HonorInfs = true;
2431  HonorNans = true;
2432  // Turning on -ffast-math (with either flag) removes the need for
2433  // MathErrno. However, turning *off* -ffast-math merely restores the
2434  // toolchain default (which may be false).
2435  MathErrno = getToolChain().IsMathErrnoDefault();
2436  AssociativeMath = false;
2437  ReciprocalMath = false;
2438  SignedZeros = true;
2439  TrappingMath = true;
2440  // -fno_fast_math restores default denormal and fpcontract handling
2441  DenormalFpMath = "";
2442  FpContract = "";
2443  break;
2444  }
2445  // If we handled this option claim it
2446  A->claim();
2447  }
2448 
2449  if (!HonorInfs)
2450  CmdArgs.push_back("-menable-no-infs");
2451 
2452  if (!HonorNans)
2453  CmdArgs.push_back("-menable-no-nans");
2454 
2455  if (MathErrno)
2456  CmdArgs.push_back("-fmath-errno");
2457 
2458  if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2459  !TrappingMath)
2460  CmdArgs.push_back("-menable-unsafe-fp-math");
2461 
2462  if (!SignedZeros)
2463  CmdArgs.push_back("-fno-signed-zeros");
2464 
2465  if (ReciprocalMath)
2466  CmdArgs.push_back("-freciprocal-math");
2467 
2468  if (!TrappingMath)
2469  CmdArgs.push_back("-fno-trapping-math");
2470 
2471  if (!DenormalFpMath.empty())
2472  CmdArgs.push_back(Args.MakeArgString("-fdenormal-fp-math="+DenormalFpMath));
2473 
2474  if (!FpContract.empty())
2475  CmdArgs.push_back(Args.MakeArgString("-ffp-contract="+FpContract));
2476 
2477  ParseMRecip(getToolChain().getDriver(), Args, CmdArgs);
2478 
2479  // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2480  // individual features enabled by -ffast-math instead of the option itself as
2481  // that's consistent with gcc's behaviour.
2482  if (!HonorInfs && !HonorNans && !MathErrno && AssociativeMath &&
2483  ReciprocalMath && !SignedZeros && !TrappingMath)
2484  CmdArgs.push_back("-ffast-math");
2485 
2486  // Handle __FINITE_MATH_ONLY__ similarly.
2487  if (!HonorInfs && !HonorNans)
2488  CmdArgs.push_back("-ffinite-math-only");
2489 
2490  // Decide whether to use verbose asm. Verbose assembly is the default on
2491  // toolchains which have the integrated assembler on by default.
2492  bool IsIntegratedAssemblerDefault =
2493  getToolChain().IsIntegratedAssemblerDefault();
2494  if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
2495  IsIntegratedAssemblerDefault) ||
2496  Args.hasArg(options::OPT_dA))
2497  CmdArgs.push_back("-masm-verbose");
2498 
2499  if (!Args.hasFlag(options::OPT_fintegrated_as, options::OPT_fno_integrated_as,
2500  IsIntegratedAssemblerDefault))
2501  CmdArgs.push_back("-no-integrated-as");
2502 
2503  if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
2504  CmdArgs.push_back("-mdebug-pass");
2505  CmdArgs.push_back("Structure");
2506  }
2507  if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
2508  CmdArgs.push_back("-mdebug-pass");
2509  CmdArgs.push_back("Arguments");
2510  }
2511 
2512  // Enable -mconstructor-aliases except on darwin, where we have to work around
2513  // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
2514  // aliases aren't supported.
2515  if (!getToolChain().getTriple().isOSDarwin() &&
2516  !getToolChain().getTriple().isNVPTX())
2517  CmdArgs.push_back("-mconstructor-aliases");
2518 
2519  // Darwin's kernel doesn't support guard variables; just die if we
2520  // try to use them.
2521  if (KernelOrKext && getToolChain().getTriple().isOSDarwin())
2522  CmdArgs.push_back("-fforbid-guard-variables");
2523 
2524  if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
2525  false)) {
2526  CmdArgs.push_back("-mms-bitfields");
2527  }
2528 
2529  if (Args.hasFlag(options::OPT_mpie_copy_relocations,
2530  options::OPT_mno_pie_copy_relocations,
2531  false)) {
2532  CmdArgs.push_back("-mpie-copy-relocations");
2533  }
2534 
2535  // This is a coarse approximation of what llvm-gcc actually does, both
2536  // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
2537  // complicated ways.
2538  bool AsynchronousUnwindTables =
2539  Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
2540  options::OPT_fno_asynchronous_unwind_tables,
2541  (getToolChain().IsUnwindTablesDefault(Args) ||
2542  getToolChain().getSanitizerArgs().needsUnwindTables()) &&
2543  !KernelOrKext);
2544  if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
2545  AsynchronousUnwindTables))
2546  CmdArgs.push_back("-munwind-tables");
2547 
2548  getToolChain().addClangTargetOptions(Args, CmdArgs,
2550 
2551  if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2552  CmdArgs.push_back("-mlimit-float-precision");
2553  CmdArgs.push_back(A->getValue());
2554  }
2555 
2556  // FIXME: Handle -mtune=.
2557  (void)Args.hasArg(options::OPT_mtune_EQ);
2558 
2559  if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
2560  CmdArgs.push_back("-mcode-model");
2561  CmdArgs.push_back(A->getValue());
2562  }
2563 
2564  // Add the target cpu
2565  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
2566  if (!CPU.empty()) {
2567  CmdArgs.push_back("-target-cpu");
2568  CmdArgs.push_back(Args.MakeArgString(CPU));
2569  }
2570 
2571  if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2572  CmdArgs.push_back("-mfpmath");
2573  CmdArgs.push_back(A->getValue());
2574  }
2575 
2576  // Add the target features
2577  getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, false);
2578 
2579  // Add target specific flags.
2580  switch (getToolChain().getArch()) {
2581  default:
2582  break;
2583 
2584  case llvm::Triple::arm:
2585  case llvm::Triple::armeb:
2586  case llvm::Triple::thumb:
2587  case llvm::Triple::thumbeb:
2588  // Use the effective triple, which takes into account the deployment target.
2589  AddARMTargetArgs(Triple, Args, CmdArgs, KernelOrKext);
2590  break;
2591 
2592  case llvm::Triple::aarch64:
2593  case llvm::Triple::aarch64_be:
2594  AddAArch64TargetArgs(Args, CmdArgs);
2595  break;
2596 
2597  case llvm::Triple::mips:
2598  case llvm::Triple::mipsel:
2599  case llvm::Triple::mips64:
2600  case llvm::Triple::mips64el:
2601  AddMIPSTargetArgs(Args, CmdArgs);
2602  break;
2603 
2604  case llvm::Triple::ppc:
2605  case llvm::Triple::ppc64:
2606  case llvm::Triple::ppc64le:
2607  AddPPCTargetArgs(Args, CmdArgs);
2608  break;
2609 
2610  case llvm::Triple::sparc:
2611  case llvm::Triple::sparcel:
2612  case llvm::Triple::sparcv9:
2613  AddSparcTargetArgs(Args, CmdArgs);
2614  break;
2615 
2616  case llvm::Triple::systemz:
2617  AddSystemZTargetArgs(Args, CmdArgs);
2618  break;
2619 
2620  case llvm::Triple::x86:
2621  case llvm::Triple::x86_64:
2622  AddX86TargetArgs(Args, CmdArgs);
2623  break;
2624 
2625  case llvm::Triple::lanai:
2626  AddLanaiTargetArgs(Args, CmdArgs);
2627  break;
2628 
2629  case llvm::Triple::hexagon:
2630  AddHexagonTargetArgs(Args, CmdArgs);
2631  break;
2632 
2633  case llvm::Triple::wasm32:
2634  case llvm::Triple::wasm64:
2635  AddWebAssemblyTargetArgs(Args, CmdArgs);
2636  break;
2637  }
2638 
2639  // The 'g' groups options involve a somewhat intricate sequence of decisions
2640  // about what to pass from the driver to the frontend, but by the time they
2641  // reach cc1 they've been factored into three well-defined orthogonal choices:
2642  // * what level of debug info to generate
2643  // * what dwarf version to write
2644  // * what debugger tuning to use
2645  // This avoids having to monkey around further in cc1 other than to disable
2646  // codeview if not running in a Windows environment. Perhaps even that
2647  // decision should be made in the driver as well though.
2648  unsigned DwarfVersion = 0;
2649  llvm::DebuggerKind DebuggerTuning = getToolChain().getDefaultDebuggerTuning();
2650  // These two are potentially updated by AddClangCLArgs.
2652  bool EmitCodeView = false;
2653 
2654  // Add clang-cl arguments.
2655  types::ID InputType = Input.getType();
2656  if (getToolChain().getDriver().IsCLMode())
2657  AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
2658 
2659  // Pass the linker version in use.
2660  if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
2661  CmdArgs.push_back("-target-linker-version");
2662  CmdArgs.push_back(A->getValue());
2663  }
2664 
2665  if (!shouldUseLeafFramePointer(Args, getToolChain().getTriple()))
2666  CmdArgs.push_back("-momit-leaf-frame-pointer");
2667 
2668  // Explicitly error on some things we know we don't support and can't just
2669  // ignore.
2670  if (!Args.hasArg(options::OPT_fallow_unsupported)) {
2671  Arg *Unsupported;
2672  if (types::isCXX(InputType) && getToolChain().getTriple().isOSDarwin() &&
2673  getToolChain().getArch() == llvm::Triple::x86) {
2674  if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
2675  (Unsupported = Args.getLastArg(options::OPT_mkernel)))
2676  D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
2677  << Unsupported->getOption().getName();
2678  }
2679  // The faltivec option has been superseded by the maltivec option.
2680  if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
2681  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
2682  << Unsupported->getOption().getName()
2683  << "please use -maltivec and include altivec.h explicitly";
2684  if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
2685  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
2686  << Unsupported->getOption().getName() << "please use -mno-altivec";
2687  }
2688 
2689  Args.AddAllArgs(CmdArgs, options::OPT_v);
2690  Args.AddLastArg(CmdArgs, options::OPT_H);
2691  if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
2692  CmdArgs.push_back("-header-include-file");
2693  CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
2694  : "-");
2695  }
2696  Args.AddLastArg(CmdArgs, options::OPT_P);
2697  Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
2698 
2699  if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
2700  CmdArgs.push_back("-diagnostic-log-file");
2701  CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
2702  : "-");
2703  }
2704 
2705  bool splitDwarfInlining =
2706  Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
2707  options::OPT_fno_split_dwarf_inlining, true);
2708 
2709  Args.ClaimAllArgs(options::OPT_g_Group);
2710  Arg *SplitDwarfArg = Args.getLastArg(options::OPT_gsplit_dwarf);
2711  if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
2712  // If the last option explicitly specified a debug-info level, use it.
2713  if (A->getOption().matches(options::OPT_gN_Group)) {
2714  DebugInfoKind = DebugLevelToInfoKind(*A);
2715  // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
2716  // But -gsplit-dwarf is not a g_group option, hence we have to check the
2717  // order explicitly. (If -gsplit-dwarf wins, we fix DebugInfoKind later.)
2718  // This gets a bit more complicated if you've disabled inline info in the
2719  // skeleton CUs (splitDwarfInlining) - then there's value in composing
2720  // split-dwarf and line-tables-only, so let those compose naturally in
2721  // that case.
2722  // And if you just turned off debug info, (-gsplit-dwarf -g0) - do that.
2723  if (SplitDwarfArg) {
2724  if (A->getIndex() > SplitDwarfArg->getIndex()) {
2725  if (DebugInfoKind == codegenoptions::NoDebugInfo ||
2726  (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
2727  splitDwarfInlining))
2728  SplitDwarfArg = nullptr;
2729  } else if (splitDwarfInlining)
2730  DebugInfoKind = codegenoptions::NoDebugInfo;
2731  }
2732  } else
2733  // For any other 'g' option, use Limited.
2734  DebugInfoKind = codegenoptions::LimitedDebugInfo;
2735  }
2736 
2737  // If a debugger tuning argument appeared, remember it.
2738  if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
2739  options::OPT_ggdbN_Group)) {
2740  if (A->getOption().matches(options::OPT_glldb))
2741  DebuggerTuning = llvm::DebuggerKind::LLDB;
2742  else if (A->getOption().matches(options::OPT_gsce))
2743  DebuggerTuning = llvm::DebuggerKind::SCE;
2744  else
2745  DebuggerTuning = llvm::DebuggerKind::GDB;
2746  }
2747 
2748  // If a -gdwarf argument appeared, remember it.
2749  if (Arg *A = Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
2750  options::OPT_gdwarf_4, options::OPT_gdwarf_5))
2751  DwarfVersion = DwarfVersionNum(A->getSpelling());
2752 
2753  // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
2754  // argument parsing.
2755  if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) {
2756  // DwarfVersion remains at 0 if no explicit choice was made.
2757  CmdArgs.push_back("-gcodeview");
2758  } else if (DwarfVersion == 0 &&
2759  DebugInfoKind != codegenoptions::NoDebugInfo) {
2760  DwarfVersion = getToolChain().GetDefaultDwarfVersion();
2761  }
2762 
2763  // We ignore flag -gstrict-dwarf for now.
2764  // And we handle flag -grecord-gcc-switches later with DwarfDebugFlags.
2765  Args.ClaimAllArgs(options::OPT_g_flags_Group);
2766 
2767  // Column info is included by default for everything except PS4 and CodeView.
2768  // Clang doesn't track end columns, just starting columns, which, in theory,
2769  // is fine for CodeView (and PDB). In practice, however, the Microsoft
2770  // debuggers don't handle missing end columns well, so it's better not to
2771  // include any column info.
2772  if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
2773  /*Default=*/ !IsPS4CPU && !(IsWindowsMSVC && EmitCodeView)))
2774  CmdArgs.push_back("-dwarf-column-info");
2775 
2776  // FIXME: Move backend command line options to the module.
2777  // If -gline-tables-only is the last option it wins.
2778  if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
2779  Args.hasArg(options::OPT_gmodules)) {
2780  DebugInfoKind = codegenoptions::LimitedDebugInfo;
2781  CmdArgs.push_back("-dwarf-ext-refs");
2782  CmdArgs.push_back("-fmodule-format=obj");
2783  }
2784 
2785  // -gsplit-dwarf should turn on -g and enable the backend dwarf
2786  // splitting and extraction.
2787  // FIXME: Currently only works on Linux.
2788  if (getToolChain().getTriple().isOSLinux()) {
2789  if (!splitDwarfInlining)
2790  CmdArgs.push_back("-fno-split-dwarf-inlining");
2791  if (SplitDwarfArg) {
2792  if (DebugInfoKind == codegenoptions::NoDebugInfo)
2793  DebugInfoKind = codegenoptions::LimitedDebugInfo;
2794  CmdArgs.push_back("-enable-split-dwarf");
2795  }
2796  }
2797 
2798  // After we've dealt with all combinations of things that could
2799  // make DebugInfoKind be other than None or DebugLineTablesOnly,
2800  // figure out if we need to "upgrade" it to standalone debug info.
2801  // We parse these two '-f' options whether or not they will be used,
2802  // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
2803  bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
2804  options::OPT_fno_standalone_debug,
2805  getToolChain().GetDefaultStandaloneDebug());
2806  if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
2807  DebugInfoKind = codegenoptions::FullDebugInfo;
2808  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
2809  DebuggerTuning);
2810 
2811  // -fdebug-macro turns on macro debug info generation.
2812  if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
2813  false))
2814  CmdArgs.push_back("-debug-info-macro");
2815 
2816  // -ggnu-pubnames turns on gnu style pubnames in the backend.
2817  if (Args.hasArg(options::OPT_ggnu_pubnames)) {
2818  CmdArgs.push_back("-backend-option");
2819  CmdArgs.push_back("-generate-gnu-dwarf-pub-sections");
2820  }
2821 
2822  // -gdwarf-aranges turns on the emission of the aranges section in the
2823  // backend.
2824  // Always enabled on the PS4.
2825  if (Args.hasArg(options::OPT_gdwarf_aranges) || IsPS4CPU) {
2826  CmdArgs.push_back("-backend-option");
2827  CmdArgs.push_back("-generate-arange-section");
2828  }
2829 
2830  if (Args.hasFlag(options::OPT_fdebug_types_section,
2831  options::OPT_fno_debug_types_section, false)) {
2832  CmdArgs.push_back("-backend-option");
2833  CmdArgs.push_back("-generate-type-units");
2834  }
2835 
2836  RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
2837 
2838  bool UseSeparateSections = isUseSeparateSections(Triple);
2839 
2840  if (Args.hasFlag(options::OPT_ffunction_sections,
2841  options::OPT_fno_function_sections, UseSeparateSections)) {
2842  CmdArgs.push_back("-ffunction-sections");
2843  }
2844 
2845  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
2846  UseSeparateSections)) {
2847  CmdArgs.push_back("-fdata-sections");
2848  }
2849 
2850  if (!Args.hasFlag(options::OPT_funique_section_names,
2851  options::OPT_fno_unique_section_names, true))
2852  CmdArgs.push_back("-fno-unique-section-names");
2853 
2854  Args.AddAllArgs(CmdArgs, options::OPT_finstrument_functions);
2855 
2856  addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
2857 
2858  if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
2859  ABICompatArg->render(Args, CmdArgs);
2860 
2861  // Add runtime flag for PS4 when PGO or Coverage are enabled.
2862  if (getToolChain().getTriple().isPS4CPU())
2863  PS4cpu::addProfileRTArgs(getToolChain(), Args, CmdArgs);
2864 
2865  // Pass options for controlling the default header search paths.
2866  if (Args.hasArg(options::OPT_nostdinc)) {
2867  CmdArgs.push_back("-nostdsysteminc");
2868  CmdArgs.push_back("-nobuiltininc");
2869  } else {
2870  if (Args.hasArg(options::OPT_nostdlibinc))
2871  CmdArgs.push_back("-nostdsysteminc");
2872  Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
2873  Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
2874  }
2875 
2876  // Pass the path to compiler resource files.
2877  CmdArgs.push_back("-resource-dir");
2878  CmdArgs.push_back(D.ResourceDir.c_str());
2879 
2880  Args.AddLastArg(CmdArgs, options::OPT_working_directory);
2881 
2882  bool ARCMTEnabled = false;
2883  if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2884  if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2885  options::OPT_ccc_arcmt_modify,
2886  options::OPT_ccc_arcmt_migrate)) {
2887  ARCMTEnabled = true;
2888  switch (A->getOption().getID()) {
2889  default:
2890  llvm_unreachable("missed a case");
2891  case options::OPT_ccc_arcmt_check:
2892  CmdArgs.push_back("-arcmt-check");
2893  break;
2894  case options::OPT_ccc_arcmt_modify:
2895  CmdArgs.push_back("-arcmt-modify");
2896  break;
2897  case options::OPT_ccc_arcmt_migrate:
2898  CmdArgs.push_back("-arcmt-migrate");
2899  CmdArgs.push_back("-mt-migrate-directory");
2900  CmdArgs.push_back(A->getValue());
2901 
2902  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2903  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2904  break;
2905  }
2906  }
2907  } else {
2908  Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2909  Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2910  Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2911  }
2912 
2913  if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2914  if (ARCMTEnabled) {
2915  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
2916  << "-ccc-arcmt-migrate";
2917  }
2918  CmdArgs.push_back("-mt-migrate-directory");
2919  CmdArgs.push_back(A->getValue());
2920 
2921  if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2922  options::OPT_objcmt_migrate_subscripting,
2923  options::OPT_objcmt_migrate_property)) {
2924  // None specified, means enable them all.
2925  CmdArgs.push_back("-objcmt-migrate-literals");
2926  CmdArgs.push_back("-objcmt-migrate-subscripting");
2927  CmdArgs.push_back("-objcmt-migrate-property");
2928  } else {
2929  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2930  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2931  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2932  }
2933  } else {
2934  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2935  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2936  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2937  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2938  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2939  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2940  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2941  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2942  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2943  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2944  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2945  Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2946  Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2947  Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2948  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2949  Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2950  }
2951 
2952  // Add preprocessing options like -I, -D, etc. if we are using the
2953  // preprocessor.
2954  //
2955  // FIXME: Support -fpreprocessed
2957  AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
2958 
2959  // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
2960  // that "The compiler can only warn and ignore the option if not recognized".
2961  // When building with ccache, it will pass -D options to clang even on
2962  // preprocessed inputs and configure concludes that -fPIC is not supported.
2963  Args.ClaimAllArgs(options::OPT_D);
2964 
2965  // Manually translate -O4 to -O3; let clang reject others.
2966  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
2967  if (A->getOption().matches(options::OPT_O4)) {
2968  CmdArgs.push_back("-O3");
2969  D.Diag(diag::warn_O4_is_O3);
2970  } else {
2971  A->render(Args, CmdArgs);
2972  }
2973  }
2974 
2975  // Warn about ignored options to clang.
2976  for (const Arg *A :
2977  Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
2978  D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
2979  A->claim();
2980  }
2981 
2982  for (const Arg *A :
2983  Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
2984  D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
2985  A->claim();
2986  }
2987 
2988  claimNoWarnArgs(Args);
2989 
2990  Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
2991 
2992  Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
2993  if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
2994  CmdArgs.push_back("-pedantic");
2995  Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
2996  Args.AddLastArg(CmdArgs, options::OPT_w);
2997 
2998  // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
2999  // (-ansi is equivalent to -std=c89 or -std=c++98).
3000  //
3001  // If a std is supplied, only add -trigraphs if it follows the
3002  // option.
3003  bool ImplyVCPPCXXVer = false;
3004  if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
3005  if (Std->getOption().matches(options::OPT_ansi))
3006  if (types::isCXX(InputType))
3007  CmdArgs.push_back("-std=c++98");
3008  else
3009  CmdArgs.push_back("-std=c89");
3010  else
3011  Std->render(Args, CmdArgs);
3012 
3013  // If -f(no-)trigraphs appears after the language standard flag, honor it.
3014  if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
3015  options::OPT_ftrigraphs,
3016  options::OPT_fno_trigraphs))
3017  if (A != Std)
3018  A->render(Args, CmdArgs);
3019  } else {
3020  // Honor -std-default.
3021  //
3022  // FIXME: Clang doesn't correctly handle -std= when the input language
3023  // doesn't match. For the time being just ignore this for C++ inputs;
3024  // eventually we want to do all the standard defaulting here instead of
3025  // splitting it between the driver and clang -cc1.
3026  if (!types::isCXX(InputType))
3027  Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
3028  /*Joined=*/true);
3029  else if (IsWindowsMSVC)
3030  ImplyVCPPCXXVer = true;
3031 
3032  Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
3033  options::OPT_fno_trigraphs);
3034  }
3035 
3036  // GCC's behavior for -Wwrite-strings is a bit strange:
3037  // * In C, this "warning flag" changes the types of string literals from
3038  // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
3039  // for the discarded qualifier.
3040  // * In C++, this is just a normal warning flag.
3041  //
3042  // Implementing this warning correctly in C is hard, so we follow GCC's
3043  // behavior for now. FIXME: Directly diagnose uses of a string literal as
3044  // a non-const char* in C, rather than using this crude hack.
3045  if (!types::isCXX(InputType)) {
3046  // FIXME: This should behave just like a warning flag, and thus should also
3047  // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
3048  Arg *WriteStrings =
3049  Args.getLastArg(options::OPT_Wwrite_strings,
3050  options::OPT_Wno_write_strings, options::OPT_w);
3051  if (WriteStrings &&
3052  WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
3053  CmdArgs.push_back("-fconst-strings");
3054  }
3055 
3056  // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
3057  // during C++ compilation, which it is by default. GCC keeps this define even
3058  // in the presence of '-w', match this behavior bug-for-bug.
3059  if (types::isCXX(InputType) &&
3060  Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
3061  true)) {
3062  CmdArgs.push_back("-fdeprecated-macro");
3063  }
3064 
3065  // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
3066  if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
3067  if (Asm->getOption().matches(options::OPT_fasm))
3068  CmdArgs.push_back("-fgnu-keywords");
3069  else
3070  CmdArgs.push_back("-fno-gnu-keywords");
3071  }
3072 
3073  if (ShouldDisableDwarfDirectory(Args, getToolChain()))
3074  CmdArgs.push_back("-fno-dwarf-directory-asm");
3075 
3076  if (ShouldDisableAutolink(Args, getToolChain()))
3077  CmdArgs.push_back("-fno-autolink");
3078 
3079  // Add in -fdebug-compilation-dir if necessary.
3080  addDebugCompDirArg(Args, CmdArgs);
3081 
3082  for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
3083  StringRef Map = A->getValue();
3084  if (Map.find('=') == StringRef::npos)
3085  D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
3086  else
3087  CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
3088  A->claim();
3089  }
3090 
3091  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
3092  options::OPT_ftemplate_depth_EQ)) {
3093  CmdArgs.push_back("-ftemplate-depth");
3094  CmdArgs.push_back(A->getValue());
3095  }
3096 
3097  if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
3098  CmdArgs.push_back("-foperator-arrow-depth");
3099  CmdArgs.push_back(A->getValue());
3100  }
3101 
3102  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
3103  CmdArgs.push_back("-fconstexpr-depth");
3104  CmdArgs.push_back(A->getValue());
3105  }
3106 
3107  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
3108  CmdArgs.push_back("-fconstexpr-steps");
3109  CmdArgs.push_back(A->getValue());
3110  }
3111 
3112  if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
3113  CmdArgs.push_back("-fbracket-depth");
3114  CmdArgs.push_back(A->getValue());
3115  }
3116 
3117  if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
3118  options::OPT_Wlarge_by_value_copy_def)) {
3119  if (A->getNumValues()) {
3120  StringRef bytes = A->getValue();
3121  CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
3122  } else
3123  CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
3124  }
3125 
3126  if (Args.hasArg(options::OPT_relocatable_pch))
3127  CmdArgs.push_back("-relocatable-pch");
3128 
3129  if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
3130  CmdArgs.push_back("-fconstant-string-class");
3131  CmdArgs.push_back(A->getValue());
3132  }
3133 
3134  if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
3135  CmdArgs.push_back("-ftabstop");
3136  CmdArgs.push_back(A->getValue());
3137  }
3138 
3139  CmdArgs.push_back("-ferror-limit");
3140  if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
3141  CmdArgs.push_back(A->getValue());
3142  else
3143  CmdArgs.push_back("19");
3144 
3145  if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
3146  CmdArgs.push_back("-fmacro-backtrace-limit");
3147  CmdArgs.push_back(A->getValue());
3148  }
3149 
3150  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
3151  CmdArgs.push_back("-ftemplate-backtrace-limit");
3152  CmdArgs.push_back(A->getValue());
3153  }
3154 
3155  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
3156  CmdArgs.push_back("-fconstexpr-backtrace-limit");
3157  CmdArgs.push_back(A->getValue());
3158  }
3159 
3160  if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
3161  CmdArgs.push_back("-fspell-checking-limit");
3162  CmdArgs.push_back(A->getValue());
3163  }
3164 
3165  // Pass -fmessage-length=.
3166  CmdArgs.push_back("-fmessage-length");
3167  if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
3168  CmdArgs.push_back(A->getValue());
3169  } else {
3170  // If -fmessage-length=N was not specified, determine whether this is a
3171  // terminal and, if so, implicitly define -fmessage-length appropriately.
3172  unsigned N = llvm::sys::Process::StandardErrColumns();
3173  CmdArgs.push_back(Args.MakeArgString(Twine(N)));
3174  }
3175 
3176  // -fvisibility= and -fvisibility-ms-compat are of a piece.
3177  if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
3178  options::OPT_fvisibility_ms_compat)) {
3179  if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
3180  CmdArgs.push_back("-fvisibility");
3181  CmdArgs.push_back(A->getValue());
3182  } else {
3183  assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
3184  CmdArgs.push_back("-fvisibility");
3185  CmdArgs.push_back("hidden");
3186  CmdArgs.push_back("-ftype-visibility");
3187  CmdArgs.push_back("default");
3188  }
3189  }
3190 
3191  Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
3192 
3193  Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
3194 
3195  // -fhosted is default.
3196  bool IsHosted = true;
3197  if (Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3198  KernelOrKext) {
3199  CmdArgs.push_back("-ffreestanding");
3200  IsHosted = false;
3201  }
3202 
3203  // Forward -f (flag) options which we can pass directly.
3204  Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
3205  Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
3206  Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
3207  // Emulated TLS is enabled by default on Android and OpenBSD, and can be enabled
3208  // manually with -femulated-tls.
3209  bool EmulatedTLSDefault = Triple.isAndroid() || Triple.isOSOpenBSD() ||
3210  Triple.isWindowsCygwinEnvironment();
3211  if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
3212  EmulatedTLSDefault))
3213  CmdArgs.push_back("-femulated-tls");
3214  // AltiVec-like language extensions aren't relevant for assembling.
3215  if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
3216  Args.AddLastArg(CmdArgs, options::OPT_fzvector);
3217 
3218  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
3219  Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
3220 
3221  // Forward flags for OpenMP. We don't do this if the current action is an
3222  // device offloading action other than OpenMP.
3223  if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
3224  options::OPT_fno_openmp, false) &&
3227  switch (getToolChain().getDriver().getOpenMPRuntime(Args)) {
3228  case Driver::OMPRT_OMP:
3229  case Driver::OMPRT_IOMP5:
3230  // Clang can generate useful OpenMP code for these two runtime libraries.
3231  CmdArgs.push_back("-fopenmp");
3232 
3233  // If no option regarding the use of TLS in OpenMP codegeneration is
3234  // given, decide a default based on the target. Otherwise rely on the
3235  // options and pass the right information to the frontend.
3236  if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
3237  options::OPT_fnoopenmp_use_tls, /*Default=*/true))
3238  CmdArgs.push_back("-fnoopenmp-use-tls");
3239  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3240  break;
3241  default:
3242  // By default, if Clang doesn't know how to generate useful OpenMP code
3243  // for a specific runtime library, we just don't pass the '-fopenmp' flag
3244  // down to the actual compilation.
3245  // FIXME: It would be better to have a mode which *only* omits IR
3246  // generation based on the OpenMP support so that we get consistent
3247  // semantic analysis, etc.
3248  break;
3249  }
3250  }
3251 
3252  const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs();
3253  Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType);
3254 
3255  const XRayArgs &XRay = getToolChain().getXRayArgs();
3256  XRay.addArgs(getToolChain(), Args, CmdArgs, InputType);
3257 
3258  if (getToolChain().SupportsProfiling())
3259  Args.AddLastArg(CmdArgs, options::OPT_pg);
3260 
3261  if (getToolChain().SupportsProfiling())
3262  Args.AddLastArg(CmdArgs, options::OPT_mfentry);
3263 
3264  // -flax-vector-conversions is default.
3265  if (!Args.hasFlag(options::OPT_flax_vector_conversions,
3266  options::OPT_fno_lax_vector_conversions))
3267  CmdArgs.push_back("-fno-lax-vector-conversions");
3268 
3269  if (Args.getLastArg(options::OPT_fapple_kext) ||
3270  (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
3271  CmdArgs.push_back("-fapple-kext");
3272 
3273  Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
3274  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
3275  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
3276  Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
3277  Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
3278 
3279  if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
3280  CmdArgs.push_back("-ftrapv-handler");
3281  CmdArgs.push_back(A->getValue());
3282  }
3283 
3284  Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
3285 
3286  // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
3287  // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
3288  if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
3289  if (A->getOption().matches(options::OPT_fwrapv))
3290  CmdArgs.push_back("-fwrapv");
3291  } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
3292  options::OPT_fno_strict_overflow)) {
3293  if (A->getOption().matches(options::OPT_fno_strict_overflow))
3294  CmdArgs.push_back("-fwrapv");
3295  }
3296 
3297  if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
3298  options::OPT_fno_reroll_loops))
3299  if (A->getOption().matches(options::OPT_freroll_loops))
3300  CmdArgs.push_back("-freroll-loops");
3301 
3302  Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
3303  Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
3304  options::OPT_fno_unroll_loops);
3305 
3306  Args.AddLastArg(CmdArgs, options::OPT_pthread);
3307 
3308  // -stack-protector=0 is default.
3309  unsigned StackProtectorLevel = 0;
3310  // NVPTX doesn't support stack protectors; from the compiler's perspective, it
3311  // doesn't even have a stack!
3312  if (!Triple.isNVPTX()) {
3313  if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
3314  options::OPT_fstack_protector_all,
3315  options::OPT_fstack_protector_strong,
3316  options::OPT_fstack_protector)) {
3317  if (A->getOption().matches(options::OPT_fstack_protector)) {
3318  StackProtectorLevel = std::max<unsigned>(
3320  getToolChain().GetDefaultStackProtectorLevel(KernelOrKext));
3321  } else if (A->getOption().matches(options::OPT_fstack_protector_strong))
3322  StackProtectorLevel = LangOptions::SSPStrong;
3323  else if (A->getOption().matches(options::OPT_fstack_protector_all))
3324  StackProtectorLevel = LangOptions::SSPReq;
3325  } else {
3326  StackProtectorLevel =
3327  getToolChain().GetDefaultStackProtectorLevel(KernelOrKext);
3328  // Only use a default stack protector on Darwin in case -ffreestanding
3329  // is not specified.
3330  if (Triple.isOSDarwin() && !IsHosted)
3331  StackProtectorLevel = 0;
3332  }
3333  }
3334  if (StackProtectorLevel) {
3335  CmdArgs.push_back("-stack-protector");
3336  CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
3337  }
3338 
3339  // --param ssp-buffer-size=
3340  for (const Arg *A : Args.filtered(options::OPT__param)) {
3341  StringRef Str(A->getValue());
3342  if (Str.startswith("ssp-buffer-size=")) {
3343  if (StackProtectorLevel) {
3344  CmdArgs.push_back("-stack-protector-buffer-size");
3345  // FIXME: Verify the argument is a valid integer.
3346  CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
3347  }
3348  A->claim();
3349  }
3350  }
3351 
3352  // Translate -mstackrealign
3353  if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
3354  false))
3355  CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
3356 
3357  if (Args.hasArg(options::OPT_mstack_alignment)) {
3358  StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
3359  CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
3360  }
3361 
3362  if (Args.hasArg(options::OPT_mstack_probe_size)) {
3363  StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
3364 
3365  if (!Size.empty())
3366  CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
3367  else
3368  CmdArgs.push_back("-mstack-probe-size=0");
3369  }
3370 
3371  switch (getToolChain().getArch()) {
3372  case llvm::Triple::aarch64:
3373  case llvm::Triple::aarch64_be:
3374  case llvm::Triple::arm:
3375  case llvm::Triple::armeb:
3376  case llvm::Triple::thumb:
3377  case llvm::Triple::thumbeb:
3378  CmdArgs.push_back("-fallow-half-arguments-and-returns");
3379  break;
3380 
3381  default:
3382  break;
3383  }
3384 
3385  if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
3386  options::OPT_mno_restrict_it)) {
3387  if (A->getOption().matches(options::OPT_mrestrict_it)) {
3388  CmdArgs.push_back("-backend-option");
3389  CmdArgs.push_back("-arm-restrict-it");
3390  } else {
3391  CmdArgs.push_back("-backend-option");
3392  CmdArgs.push_back("-arm-no-restrict-it");
3393  }
3394  } else if (Triple.isOSWindows() &&
3395  (Triple.getArch() == llvm::Triple::arm ||
3396  Triple.getArch() == llvm::Triple::thumb)) {
3397  // Windows on ARM expects restricted IT blocks
3398  CmdArgs.push_back("-backend-option");
3399  CmdArgs.push_back("-arm-restrict-it");
3400  }
3401 
3402  // Forward -cl options to -cc1
3403  if (Args.getLastArg(options::OPT_cl_opt_disable)) {
3404  CmdArgs.push_back("-cl-opt-disable");
3405  }
3406  if (Args.getLastArg(options::OPT_cl_strict_aliasing)) {
3407  CmdArgs.push_back("-cl-strict-aliasing");
3408  }
3409  if (Args.getLastArg(options::OPT_cl_single_precision_constant)) {
3410  CmdArgs.push_back("-cl-single-precision-constant");
3411  }
3412  if (Args.getLastArg(options::OPT_cl_finite_math_only)) {
3413  CmdArgs.push_back("-cl-finite-math-only");
3414  }
3415  if (Args.getLastArg(options::OPT_cl_kernel_arg_info)) {
3416  CmdArgs.push_back("-cl-kernel-arg-info");
3417  }
3418  if (Args.getLastArg(options::OPT_cl_unsafe_math_optimizations)) {
3419  CmdArgs.push_back("-cl-unsafe-math-optimizations");
3420  }
3421  if (Args.getLastArg(options::OPT_cl_fast_relaxed_math)) {
3422  CmdArgs.push_back("-cl-fast-relaxed-math");
3423  }
3424  if (Args.getLastArg(options::OPT_cl_mad_enable)) {
3425  CmdArgs.push_back("-cl-mad-enable");
3426  }
3427  if (Args.getLastArg(options::OPT_cl_no_signed_zeros)) {
3428  CmdArgs.push_back("-cl-no-signed-zeros");
3429  }
3430  if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
3431  std::string CLStdStr = "-cl-std=";
3432  CLStdStr += A->getValue();
3433  CmdArgs.push_back(Args.MakeArgString(CLStdStr));
3434  }
3435  if (Args.getLastArg(options::OPT_cl_denorms_are_zero)) {
3436  CmdArgs.push_back("-cl-denorms-are-zero");
3437  }
3438  if (Args.getLastArg(options::OPT_cl_fp32_correctly_rounded_divide_sqrt)) {
3439  CmdArgs.push_back("-cl-fp32-correctly-rounded-divide-sqrt");
3440  }
3441 
3442  // Forward -f options with positive and negative forms; we translate
3443  // these by hand.
3444  if (Arg *A = getLastProfileSampleUseArg(Args)) {
3445  StringRef fname = A->getValue();
3446  if (!llvm::sys::fs::exists(fname))
3447  D.Diag(diag::err_drv_no_such_file) << fname;
3448  else
3449  A->render(Args, CmdArgs);
3450  }
3451 
3452  if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3453  options::OPT_fno_debug_info_for_profiling, false))
3454  CmdArgs.push_back("-fdebug-info-for-profiling");
3455 
3456  // -fbuiltin is default unless -mkernel is used.
3457  bool UseBuiltins =
3458  Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
3459  !Args.hasArg(options::OPT_mkernel));
3460  if (!UseBuiltins)
3461  CmdArgs.push_back("-fno-builtin");
3462 
3463  // -ffreestanding implies -fno-builtin.
3464  if (Args.hasArg(options::OPT_ffreestanding))
3465  UseBuiltins = false;
3466 
3467  // Process the -fno-builtin-* options.
3468  for (const auto &Arg : Args) {
3469  const Option &O = Arg->getOption();
3470  if (!O.matches(options::OPT_fno_builtin_))
3471  continue;
3472 
3473  Arg->claim();
3474  // If -fno-builtin is specified, then there's no need to pass the option to
3475  // the frontend.
3476  if (!UseBuiltins)
3477  continue;
3478 
3479  StringRef FuncName = Arg->getValue();
3480  CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
3481  }
3482 
3483  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
3484  options::OPT_fno_assume_sane_operator_new))
3485  CmdArgs.push_back("-fno-assume-sane-operator-new");
3486 
3487  // -fblocks=0 is default.
3488  if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
3489  getToolChain().IsBlocksDefault()) ||
3490  (Args.hasArg(options::OPT_fgnu_runtime) &&
3491  Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
3492  !Args.hasArg(options::OPT_fno_blocks))) {
3493  CmdArgs.push_back("-fblocks");
3494 
3495  if (!Args.hasArg(options::OPT_fgnu_runtime) &&
3496  !getToolChain().hasBlocksRuntime())
3497  CmdArgs.push_back("-fblocks-runtime-optional");
3498  }
3499 
3500  if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
3501  false) &&
3502  types::isCXX(InputType)) {
3503  CmdArgs.push_back("-fcoroutines-ts");
3504  }
3505 
3506  // -fmodules enables the use of precompiled modules (off by default).
3507  // Users can pass -fno-cxx-modules to turn off modules support for
3508  // C++/Objective-C++ programs.
3509  bool HaveClangModules = false;
3510  if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
3511  bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
3512  options::OPT_fno_cxx_modules, true);
3513  if (AllowedInCXX || !types::isCXX(InputType)) {
3514  CmdArgs.push_back("-fmodules");
3515  HaveClangModules = true;
3516  }
3517  }
3518 
3519  bool HaveAnyModules = HaveClangModules;
3520  if (Args.hasArg(options::OPT_fmodules_ts)) {
3521  CmdArgs.push_back("-fmodules-ts");
3522  HaveAnyModules = true;
3523  }
3524 
3525  // -fmodule-maps enables implicit reading of module map files. By default,
3526  // this is enabled if we are using Clang's flavor of precompiled modules.
3527  if (Args.hasFlag(options::OPT_fimplicit_module_maps,
3528  options::OPT_fno_implicit_module_maps, HaveClangModules)) {
3529  CmdArgs.push_back("-fimplicit-module-maps");
3530  }
3531 
3532  // -fmodules-decluse checks that modules used are declared so (off by
3533  // default).
3534  if (Args.hasFlag(options::OPT_fmodules_decluse,
3535  options::OPT_fno_modules_decluse, false)) {
3536  CmdArgs.push_back("-fmodules-decluse");
3537  }
3538 
3539  // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
3540  // all #included headers are part of modules.
3541  if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
3542  options::OPT_fno_modules_strict_decluse, false)) {
3543  CmdArgs.push_back("-fmodules-strict-decluse");
3544  }
3545 
3546  // -fno-implicit-modules turns off implicitly compiling modules on demand.
3547  if (!Args.hasFlag(options::OPT_fimplicit_modules,
3548  options::OPT_fno_implicit_modules, HaveClangModules)) {
3549  if (HaveAnyModules)
3550  CmdArgs.push_back("-fno-implicit-modules");
3551  } else if (HaveAnyModules) {
3552  // -fmodule-cache-path specifies where our implicitly-built module files
3553  // should be written.
3554  SmallString<128> Path;
3555  if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
3556  Path = A->getValue();
3557  if (C.isForDiagnostics()) {
3558  // When generating crash reports, we want to emit the modules along with
3559  // the reproduction sources, so we ignore any provided module path.
3560  Path = Output.getFilename();
3561  llvm::sys::path::replace_extension(Path, ".cache");
3562  llvm::sys::path::append(Path, "modules");
3563  } else if (Path.empty()) {
3564  // No module path was provided: use the default.
3565  llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Path);
3566  llvm::sys::path::append(Path, "org.llvm.clang.");
3567  appendUserToPath(Path);
3568  llvm::sys::path::append(Path, "ModuleCache");
3569  }
3570  const char Arg[] = "-fmodules-cache-path=";
3571  Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
3572  CmdArgs.push_back(Args.MakeArgString(Path));
3573  }
3574 
3575  if (HaveAnyModules) {
3576  // -fprebuilt-module-path specifies where to load the prebuilt module files.
3577  for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path))
3578  CmdArgs.push_back(Args.MakeArgString(
3579  std::string("-fprebuilt-module-path=") + A->getValue()));
3580  }
3581 
3582  // -fmodule-name specifies the module that is currently being built (or
3583  // used for header checking by -fmodule-maps).
3584  Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
3585 
3586  // -fmodule-map-file can be used to specify files containing module
3587  // definitions.
3588  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
3589 
3590  // -fbuiltin-module-map can be used to load the clang
3591  // builtin headers modulemap file.
3592  if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
3593  SmallString<128> BuiltinModuleMap(getToolChain().getDriver().ResourceDir);
3594  llvm::sys::path::append(BuiltinModuleMap, "include");
3595  llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
3596  if (llvm::sys::fs::exists(BuiltinModuleMap)) {
3597  CmdArgs.push_back(Args.MakeArgString("-fmodule-map-file=" +
3598  BuiltinModuleMap));
3599  }
3600  }
3601 
3602  // -fmodule-file can be used to specify files containing precompiled modules.
3603  if (HaveAnyModules)
3604  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
3605  else
3606  Args.ClaimAllArgs(options::OPT_fmodule_file);
3607 
3608  // When building modules and generating crashdumps, we need to dump a module
3609  // dependency VFS alongside the output.
3610  if (HaveClangModules && C.isForDiagnostics()) {
3611  SmallString<128> VFSDir(Output.getFilename());
3612  llvm::sys::path::replace_extension(VFSDir, ".cache");
3613  // Add the cache directory as a temp so the crash diagnostics pick it up.
3614  C.addTempFile(Args.MakeArgString(VFSDir));
3615 
3616  llvm::sys::path::append(VFSDir, "vfs");
3617  CmdArgs.push_back("-module-dependency-dir");
3618  CmdArgs.push_back(Args.MakeArgString(VFSDir));
3619  }
3620 
3621  if (HaveClangModules)
3622  Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
3623 
3624  // Pass through all -fmodules-ignore-macro arguments.
3625  Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
3626  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
3627  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
3628 
3629  Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
3630 
3631  if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
3632  if (Args.hasArg(options::OPT_fbuild_session_timestamp))
3633  D.Diag(diag::err_drv_argument_not_allowed_with)
3634  << A->getAsString(Args) << "-fbuild-session-timestamp";
3635 
3636  llvm::sys::fs::file_status Status;
3637  if (llvm::sys::fs::status(A->getValue(), Status))
3638  D.Diag(diag::err_drv_no_such_file) << A->getValue();
3639  CmdArgs.push_back(
3640  Args.MakeArgString("-fbuild-session-timestamp=" +
3641  Twine((uint64_t)Status.getLastModificationTime()
3642  .time_since_epoch()
3643  .count())));
3644  }
3645 
3646  if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
3647  if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
3648  options::OPT_fbuild_session_file))
3649  D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
3650 
3651  Args.AddLastArg(CmdArgs,
3652  options::OPT_fmodules_validate_once_per_build_session);
3653  }
3654 
3655  Args.AddLastArg(CmdArgs, options::OPT_fmodules_validate_system_headers);
3656  Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
3657 
3658  // -faccess-control is default.
3659  if (Args.hasFlag(options::OPT_fno_access_control,
3660  options::OPT_faccess_control, false))
3661  CmdArgs.push_back("-fno-access-control");
3662 
3663  // -felide-constructors is the default.
3664  if (Args.hasFlag(options::OPT_fno_elide_constructors,
3665  options::OPT_felide_constructors, false))
3666  CmdArgs.push_back("-fno-elide-constructors");
3667 
3668  ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode();
3669 
3670  if (KernelOrKext || (types::isCXX(InputType) &&
3671  (RTTIMode == ToolChain::RM_DisabledExplicitly ||
3672  RTTIMode == ToolChain::RM_DisabledImplicitly)))
3673  CmdArgs.push_back("-fno-rtti");
3674 
3675  // -fshort-enums=0 is default for all architectures except Hexagon.
3676  if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
3677  getToolChain().getArch() == llvm::Triple::hexagon))
3678  CmdArgs.push_back("-fshort-enums");
3679 
3680  // -fsigned-char is default.
3681  if (Arg *A = Args.getLastArg(
3682  options::OPT_fsigned_char, options::OPT_fno_signed_char,
3683  options::OPT_funsigned_char, options::OPT_fno_unsigned_char)) {
3684  if (A->getOption().matches(options::OPT_funsigned_char) ||
3685  A->getOption().matches(options::OPT_fno_signed_char)) {
3686  CmdArgs.push_back("-fno-signed-char");
3687  }
3688  } else if (!isSignedCharDefault(getToolChain().getTriple())) {
3689  CmdArgs.push_back("-fno-signed-char");
3690  }
3691 
3692  // -fuse-cxa-atexit is default.
3693  if (!Args.hasFlag(
3694  options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
3695  !IsWindowsCygnus && !IsWindowsGNU &&
3696  getToolChain().getTriple().getOS() != llvm::Triple::Solaris &&
3697  getToolChain().getArch() != llvm::Triple::hexagon &&
3698  getToolChain().getArch() != llvm::Triple::xcore &&
3699  ((getToolChain().getTriple().getVendor() !=
3700  llvm::Triple::MipsTechnologies) ||
3701  getToolChain().getTriple().hasEnvironment())) ||
3702  KernelOrKext)
3703  CmdArgs.push_back("-fno-use-cxa-atexit");
3704 
3705  // -fms-extensions=0 is default.
3706  if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
3707  IsWindowsMSVC))
3708  CmdArgs.push_back("-fms-extensions");
3709 
3710  // -fno-use-line-directives is default.
3711  if (Args.hasFlag(options::OPT_fuse_line_directives,
3712  options::OPT_fno_use_line_directives, false))
3713  CmdArgs.push_back("-fuse-line-directives");
3714 
3715  // -fms-compatibility=0 is default.
3716  if (Args.hasFlag(options::OPT_fms_compatibility,
3717  options::OPT_fno_ms_compatibility,
3718  (IsWindowsMSVC &&
3719  Args.hasFlag(options::OPT_fms_extensions,
3720  options::OPT_fno_ms_extensions, true))))
3721  CmdArgs.push_back("-fms-compatibility");
3722 
3723  VersionTuple MSVT =
3724  getToolChain().computeMSVCVersion(&getToolChain().getDriver(), Args);
3725  if (!MSVT.empty())
3726  CmdArgs.push_back(
3727  Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
3728 
3729  bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
3730  if (ImplyVCPPCXXVer) {
3731  StringRef LanguageStandard;
3732  if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
3733  LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
3734  .Case("c++14", "-std=c++14")
3735  .Case("c++latest", "-std=c++1z")
3736  .Default("");
3737  if (LanguageStandard.empty())
3738  D.Diag(clang::diag::warn_drv_unused_argument)
3739  << StdArg->getAsString(Args);
3740  }
3741 
3742  if (LanguageStandard.empty()) {
3743  if (IsMSVC2015Compatible)
3744  LanguageStandard = "-std=c++14";
3745  else
3746  LanguageStandard = "-std=c++11";
3747  }
3748 
3749  CmdArgs.push_back(LanguageStandard.data());
3750  }
3751 
3752  // -fno-borland-extensions is default.
3753  if (Args.hasFlag(options::OPT_fborland_extensions,
3754  options::OPT_fno_borland_extensions, false))
3755  CmdArgs.push_back("-fborland-extensions");
3756 
3757  // -fno-declspec is default, except for PS4.
3758  if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
3759  getToolChain().getTriple().isPS4()))
3760  CmdArgs.push_back("-fdeclspec");
3761  else if (Args.hasArg(options::OPT_fno_declspec))
3762  CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
3763 
3764  // -fthreadsafe-static is default, except for MSVC compatibility versions less
3765  // than 19.
3766  if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
3767  options::OPT_fno_threadsafe_statics,
3768  !IsWindowsMSVC || IsMSVC2015Compatible))
3769  CmdArgs.push_back("-fno-threadsafe-statics");
3770 
3771  // -fno-delayed-template-parsing is default, except for Windows where MSVC STL
3772  // needs it.
3773  if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
3774  options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
3775  CmdArgs.push_back("-fdelayed-template-parsing");
3776 
3777  // -fgnu-keywords default varies depending on language; only pass if
3778  // specified.
3779  if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
3780  options::OPT_fno_gnu_keywords))
3781  A->render(Args, CmdArgs);
3782 
3783  if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
3784  false))
3785  CmdArgs.push_back("-fgnu89-inline");
3786 
3787  if (Args.hasArg(options::OPT_fno_inline))
3788  CmdArgs.push_back("-fno-inline");
3789 
3790  if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
3791  options::OPT_finline_hint_functions,
3792  options::OPT_fno_inline_functions))
3793  InlineArg->render(Args, CmdArgs);
3794 
3795  Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
3796  options::OPT_fno_experimental_new_pass_manager);
3797 
3798  ObjCRuntime objcRuntime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
3799 
3800  // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and
3801  // legacy is the default. Except for deployment target of 10.5,
3802  // next runtime is always legacy dispatch and -fno-objc-legacy-dispatch
3803  // gets ignored silently.
3804  if (objcRuntime.isNonFragile()) {
3805  if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
3806  options::OPT_fno_objc_legacy_dispatch,
3807  objcRuntime.isLegacyDispatchDefaultForArch(
3808  getToolChain().getArch()))) {
3809  if (getToolChain().UseObjCMixedDispatch())
3810  CmdArgs.push_back("-fobjc-dispatch-method=mixed");
3811  else
3812  CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
3813  }
3814  }
3815 
3816  // When ObjectiveC legacy runtime is in effect on MacOSX,
3817  // turn on the option to do Array/Dictionary subscripting
3818  // by default.
3819  if (getToolChain().getArch() == llvm::Triple::x86 &&
3820  getToolChain().getTriple().isMacOSX() &&
3821  !getToolChain().getTriple().isMacOSXVersionLT(10, 7) &&
3822  objcRuntime.getKind() == ObjCRuntime::FragileMacOSX &&
3823  objcRuntime.isNeXTFamily())
3824  CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
3825 
3826  // -fencode-extended-block-signature=1 is default.
3827  if (getToolChain().IsEncodeExtendedBlockSignatureDefault()) {
3828  CmdArgs.push_back("-fencode-extended-block-signature");
3829  }
3830 
3831  // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
3832  // NOTE: This logic is duplicated in ToolChains.cpp.
3833  bool ARC = isObjCAutoRefCount(Args);
3834  if (ARC) {
3835  getToolChain().CheckObjCARC();
3836 
3837  CmdArgs.push_back("-fobjc-arc");
3838 
3839  // FIXME: It seems like this entire block, and several around it should be
3840  // wrapped in isObjC, but for now we just use it here as this is where it
3841  // was being used previously.
3842  if (types::isCXX(InputType) && types::isObjC(InputType)) {
3843  if (getToolChain().GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
3844  CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
3845  else
3846  CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
3847  }
3848 
3849  // Allow the user to enable full exceptions code emission.
3850  // We define off for Objective-CC, on for Objective-C++.
3851  if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
3852  options::OPT_fno_objc_arc_exceptions,
3853  /*default*/ types::isCXX(InputType)))
3854  CmdArgs.push_back("-fobjc-arc-exceptions");
3855  }
3856 
3857  // Silence warning for full exception code emission options when explicitly
3858  // set to use no ARC.
3859  if (Args.hasArg(options::OPT_fno_objc_arc)) {
3860  Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
3861  Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
3862  }
3863 
3864  // -fobjc-infer-related-result-type is the default, except in the Objective-C
3865  // rewriter.
3866  if (rewriteKind != RK_None)
3867  CmdArgs.push_back("-fno-objc-infer-related-result-type");
3868 
3869  // Pass down -fobjc-weak or -fno-objc-weak if present.
3870  if (types::isObjC(InputType)) {
3871  auto WeakArg = Args.getLastArg(options::OPT_fobjc_weak,
3872  options::OPT_fno_objc_weak);
3873  if (!WeakArg) {
3874  // nothing to do
3875  } else if (!objcRuntime.allowsWeak()) {
3876  if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
3877  D.Diag(diag::err_objc_weak_unsupported);
3878  } else {
3879  WeakArg->render(Args, CmdArgs);
3880  }
3881  }
3882 
3883  if (Args.hasFlag(options::OPT_fapplication_extension,
3884  options::OPT_fno_application_extension, false))
3885  CmdArgs.push_back("-fapplication-extension");
3886 
3887  // Handle GCC-style exception args.
3888  if (!C.getDriver().IsCLMode())
3889  addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, objcRuntime,
3890  CmdArgs);
3891 
3892  if (Args.hasArg(options::OPT_fsjlj_exceptions) ||
3893  getToolChain().UseSjLjExceptions(Args))
3894  CmdArgs.push_back("-fsjlj-exceptions");
3895 
3896  // C++ "sane" operator new.
3897  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
3898  options::OPT_fno_assume_sane_operator_new))
3899  CmdArgs.push_back("-fno-assume-sane-operator-new");
3900 
3901  // -frelaxed-template-template-args is off by default, as it is a severe
3902  // breaking change until a corresponding change to template partial ordering
3903  // is provided.
3904  if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
3905  options::OPT_fno_relaxed_template_template_args, false))
3906  CmdArgs.push_back("-frelaxed-template-template-args");
3907 
3908  // -fsized-deallocation is off by default, as it is an ABI-breaking change for
3909  // most platforms.
3910  if (Args.hasFlag(options::OPT_fsized_deallocation,
3911  options::OPT_fno_sized_deallocation, false))
3912  CmdArgs.push_back("-fsized-deallocation");
3913 
3914  // -faligned-allocation is on by default in C++17 onwards and otherwise off
3915  // by default.
3916  if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
3917  options::OPT_fno_aligned_allocation,
3918  options::OPT_faligned_new_EQ)) {
3919  if (A->getOption().matches(options::OPT_fno_aligned_allocation))
3920  CmdArgs.push_back("-fno-aligned-allocation");
3921  else
3922  CmdArgs.push_back("-faligned-allocation");
3923  }
3924 
3925  // The default new alignment can be specified using a dedicated option or via
3926  // a GCC-compatible option that also turns on aligned allocation.
3927  if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
3928  options::OPT_faligned_new_EQ))
3929  CmdArgs.push_back(
3930  Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
3931 
3932  // -fconstant-cfstrings is default, and may be subject to argument translation
3933  // on Darwin.
3934  if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
3935  options::OPT_fno_constant_cfstrings) ||
3936  !Args.hasFlag(options::OPT_mconstant_cfstrings,
3937  options::OPT_mno_constant_cfstrings))
3938  CmdArgs.push_back("-fno-constant-cfstrings");
3939 
3940  // -fshort-wchar default varies depending on platform; only
3941  // pass if specified.
3942  if (Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
3943  options::OPT_fno_short_wchar))
3944  A->render(Args, CmdArgs);
3945 
3946  // -fno-pascal-strings is default, only pass non-default.
3947  if (Args.hasFlag(options::OPT_fpascal_strings,
3948  options::OPT_fno_pascal_strings, false))
3949  CmdArgs.push_back("-fpascal-strings");
3950 
3951  // Honor -fpack-struct= and -fpack-struct, if given. Note that
3952  // -fno-pack-struct doesn't apply to -fpack-struct=.
3953  if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
3954  std::string PackStructStr = "-fpack-struct=";
3955  PackStructStr += A->getValue();
3956  CmdArgs.push_back(Args.MakeArgString(PackStructStr));
3957  } else if (Args.hasFlag(options::OPT_fpack_struct,
3958  options::OPT_fno_pack_struct, false)) {
3959  CmdArgs.push_back("-fpack-struct=1");
3960  }
3961 
3962  // Handle -fmax-type-align=N and -fno-type-align
3963  bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
3964  if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
3965  if (!SkipMaxTypeAlign) {
3966  std::string MaxTypeAlignStr = "-fmax-type-align=";
3967  MaxTypeAlignStr += A->getValue();
3968  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
3969  }
3970  } else if (getToolChain().getTriple().isOSDarwin()) {
3971  if (!SkipMaxTypeAlign) {
3972  std::string MaxTypeAlignStr = "-fmax-type-align=16";
3973  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
3974  }
3975  }
3976 
3977  // -fcommon is the default unless compiling kernel code or the target says so
3978  bool NoCommonDefault =
3979  KernelOrKext || isNoCommonDefault(getToolChain().getTriple());
3980  if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
3981  !NoCommonDefault))
3982  CmdArgs.push_back("-fno-common");
3983 
3984  // -fsigned-bitfields is default, and clang doesn't yet support
3985  // -funsigned-bitfields.
3986  if (!Args.hasFlag(options::OPT_fsigned_bitfields,
3987  options::OPT_funsigned_bitfields))
3988  D.Diag(diag::warn_drv_clang_unsupported)
3989  << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
3990 
3991  // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
3992  if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
3993  D.Diag(diag::err_drv_clang_unsupported)
3994  << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
3995 
3996  // -finput_charset=UTF-8 is default. Reject others
3997  if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
3998  StringRef value = inputCharset->getValue();
3999  if (!value.equals_lower("utf-8"))
4000  D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4001  << value;
4002  }
4003 
4004  // -fexec_charset=UTF-8 is default. Reject others
4005  if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
4006  StringRef value = execCharset->getValue();
4007  if (!value.equals_lower("utf-8"))
4008  D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
4009  << value;
4010  }
4011 
4012  bool CaretDefault = true;
4013  bool ColumnDefault = true;
4014  if (Arg *DiagArg = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
4015  options::OPT__SLASH_diagnostics_column,
4016  options::OPT__SLASH_diagnostics_caret)) {
4017  switch (DiagArg->getOption().getID()) {
4018  case options::OPT__SLASH_diagnostics_caret:
4019  CaretDefault = true;
4020  ColumnDefault = true;
4021  break;
4022  case options::OPT__SLASH_diagnostics_column:
4023  CaretDefault = false;
4024  ColumnDefault = true;
4025  break;
4026  case options::OPT__SLASH_diagnostics_classic:
4027  CaretDefault = false;
4028  ColumnDefault = false;
4029  break;
4030  }
4031  }
4032 
4033  // -fcaret-diagnostics is default.
4034  if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
4035  options::OPT_fno_caret_diagnostics, CaretDefault))
4036  CmdArgs.push_back("-fno-caret-diagnostics");
4037 
4038  // -fdiagnostics-fixit-info is default, only pass non-default.
4039  if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
4040  options::OPT_fno_diagnostics_fixit_info))
4041  CmdArgs.push_back("-fno-diagnostics-fixit-info");
4042 
4043  // Enable -fdiagnostics-show-option by default.
4044  if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
4045  options::OPT_fno_diagnostics_show_option))
4046  CmdArgs.push_back("-fdiagnostics-show-option");
4047 
4048  if (const Arg *A =
4049  Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
4050  CmdArgs.push_back("-fdiagnostics-show-category");
4051  CmdArgs.push_back(A->getValue());
4052  }
4053 
4054  if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
4055  options::OPT_fno_diagnostics_show_hotness, false))
4056  CmdArgs.push_back("-fdiagnostics-show-hotness");
4057 
4058  if (const Arg *A =
4059  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
4060  std::string Opt = std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
4061  CmdArgs.push_back(Args.MakeArgString(Opt));
4062  }
4063 
4064  if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
4065  CmdArgs.push_back("-fdiagnostics-format");
4066  CmdArgs.push_back(A->getValue());
4067  }
4068 
4069  if (Arg *A = Args.getLastArg(
4070  options::OPT_fdiagnostics_show_note_include_stack,
4071  options::OPT_fno_diagnostics_show_note_include_stack)) {
4072  if (A->getOption().matches(
4073  options::OPT_fdiagnostics_show_note_include_stack))
4074  CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
4075  else
4076  CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
4077  }
4078 
4079  // Color diagnostics are parsed by the driver directly from argv
4080  // and later re-parsed to construct this job; claim any possible
4081  // color diagnostic here to avoid warn_drv_unused_argument and
4082  // diagnose bad OPT_fdiagnostics_color_EQ values.
4083  for (Arg *A : Args) {
4084  const Option &O = A->getOption();
4085  if (!O.matches(options::OPT_fcolor_diagnostics) &&
4086  !O.matches(options::OPT_fdiagnostics_color) &&
4087  !O.matches(options::OPT_fno_color_diagnostics) &&
4088  !O.matches(options::OPT_fno_diagnostics_color) &&
4089  !O.matches(options::OPT_fdiagnostics_color_EQ))
4090  continue;
4091  if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
4092  StringRef Value(A->getValue());
4093  if (Value != "always" && Value != "never" && Value != "auto")
4094  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4095  << ("-fdiagnostics-color=" + Value).str();
4096  }
4097  A->claim();
4098  }
4099  if (D.getDiags().getDiagnosticOptions().ShowColors)
4100  CmdArgs.push_back("-fcolor-diagnostics");
4101 
4102  if (Args.hasArg(options::OPT_fansi_escape_codes))
4103  CmdArgs.push_back("-fansi-escape-codes");
4104 
4105  if (!Args.hasFlag(options::OPT_fshow_source_location,
4106  options::OPT_fno_show_source_location))
4107  CmdArgs.push_back("-fno-show-source-location");
4108 
4109  if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
4110  CmdArgs.push_back("-fdiagnostics-absolute-paths");
4111 
4112  if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
4113  ColumnDefault))
4114  CmdArgs.push_back("-fno-show-column");
4115 
4116  if (!Args.hasFlag(options::OPT_fspell_checking,
4117  options::OPT_fno_spell_checking))
4118  CmdArgs.push_back("-fno-spell-checking");
4119 
4120  // -fno-asm-blocks is default.
4121  if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4122  false))
4123  CmdArgs.push_back("-fasm-blocks");
4124 
4125  // -fgnu-inline-asm is default.
4126  if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4127  options::OPT_fno_gnu_inline_asm, true))
4128  CmdArgs.push_back("-fno-gnu-inline-asm");
4129 
4130  // Enable vectorization per default according to the optimization level
4131  // selected. For optimization levels that want vectorization we use the alias
4132  // option to simplify the hasFlag logic.
4133  bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4134  OptSpecifier VectorizeAliasOption =
4135  EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4136  if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4137  options::OPT_fno_vectorize, EnableVec))
4138  CmdArgs.push_back("-vectorize-loops");
4139 
4140  // -fslp-vectorize is enabled based on the optimization level selected.
4141  bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4142  OptSpecifier SLPVectAliasOption =
4143  EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4144  if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4145  options::OPT_fno_slp_vectorize, EnableSLPVec))
4146  CmdArgs.push_back("-vectorize-slp");
4147 
4148  if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4149  A->render(Args, CmdArgs);
4150 
4151  if (Arg *A = Args.getLastArg(
4152  options::OPT_fsanitize_undefined_strip_path_components_EQ))
4153  A->render(Args, CmdArgs);
4154 
4155  // -fdollars-in-identifiers default varies depending on platform and
4156  // language; only pass if specified.
4157  if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4158  options::OPT_fno_dollars_in_identifiers)) {
4159  if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4160  CmdArgs.push_back("-fdollars-in-identifiers");
4161  else
4162  CmdArgs.push_back("-fno-dollars-in-identifiers");
4163  }
4164 
4165  // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4166  // practical purposes.
4167  if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4168  options::OPT_fno_unit_at_a_time)) {
4169  if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4170  D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4171  }
4172 
4173  if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4174  options::OPT_fno_apple_pragma_pack, false))
4175  CmdArgs.push_back("-fapple-pragma-pack");
4176 
4177  // le32-specific flags:
4178  // -fno-math-builtin: clang should not convert math builtins to intrinsics
4179  // by default.
4180  if (getToolChain().getArch() == llvm::Triple::le32) {
4181  CmdArgs.push_back("-fno-math-builtin");
4182  }
4183 
4184  if (Args.hasFlag(options::OPT_fsave_optimization_record,
4185  options::OPT_fno_save_optimization_record, false)) {
4186  CmdArgs.push_back("-opt-record-file");
4187 
4188  const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4189  if (A) {
4190  CmdArgs.push_back(A->getValue());
4191  } else {
4192  SmallString<128> F;
4193  if (Output.isFilename() && (Args.hasArg(options::OPT_c) ||
4194  Args.hasArg(options::OPT_S))) {
4195  F = Output.getFilename();
4196  } else {
4197  // Use the input filename.
4198  F = llvm::sys::path::stem(Input.getBaseInput());
4199 
4200  // If we're compiling for an offload architecture (i.e. a CUDA device),
4201  // we need to make the file name for the device compilation different
4202  // from the host compilation.
4205  llvm::sys::path::replace_extension(F, "");
4207  Triple.normalize());
4208  F += "-";
4209  F += JA.getOffloadingArch();
4210  }
4211  }
4212 
4213  llvm::sys::path::replace_extension(F, "opt.yaml");
4214  CmdArgs.push_back(Args.MakeArgString(F));
4215  }
4216  }
4217 
4218 // Default to -fno-builtin-str{cat,cpy} on Darwin for ARM.
4219 //
4220 // FIXME: Now that PR4941 has been fixed this can be enabled.
4221 #if 0
4222  if (getToolChain().getTriple().isOSDarwin() &&
4223  (getToolChain().getArch() == llvm::Triple::arm ||
4224  getToolChain().getArch() == llvm::Triple::thumb)) {
4225  if (!Args.hasArg(options::OPT_fbuiltin_strcat))
4226  CmdArgs.push_back("-fno-builtin-strcat");
4227  if (!Args.hasArg(options::OPT_fbuiltin_strcpy))
4228  CmdArgs.push_back("-fno-builtin-strcpy");
4229  }
4230 #endif
4231 
4232  bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
4233  options::OPT_fno_rewrite_imports, false);
4234  if (RewriteImports)
4235  CmdArgs.push_back("-frewrite-imports");
4236 
4237  // Enable rewrite includes if the user's asked for it or if we're generating
4238  // diagnostics.
4239  // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
4240  // nice to enable this when doing a crashdump for modules as well.
4241  if (Args.hasFlag(options::OPT_frewrite_includes,
4242  options::OPT_fno_rewrite_includes, false) ||
4243  (C.isForDiagnostics() && (RewriteImports || !HaveAnyModules)))
4244  CmdArgs.push_back("-frewrite-includes");
4245 
4246  // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
4247  if (Arg *A = Args.getLastArg(options::OPT_traditional,
4248  options::OPT_traditional_cpp)) {
4249  if (isa<PreprocessJobAction>(JA))
4250  CmdArgs.push_back("-traditional-cpp");
4251  else
4252  D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
4253  }
4254 
4255  Args.AddLastArg(CmdArgs, options::OPT_dM);
4256  Args.AddLastArg(CmdArgs, options::OPT_dD);
4257 
4258  // Handle serialized diagnostics.
4259  if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
4260  CmdArgs.push_back("-serialize-diagnostic-file");
4261  CmdArgs.push_back(Args.MakeArgString(A->getValue()));
4262  }
4263 
4264  if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
4265  CmdArgs.push_back("-fretain-comments-from-system-headers");
4266 
4267  // Forward -fcomment-block-commands to -cc1.
4268  Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
4269  // Forward -fparse-all-comments to -cc1.
4270  Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
4271 
4272  // Turn -fplugin=name.so into -load name.so
4273  for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
4274  CmdArgs.push_back("-load");
4275  CmdArgs.push_back(A->getValue());
4276  A->claim();
4277  }
4278 
4279  // Setup statistics file output.
4280  if (const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ)) {
4281  StringRef SaveStats = A->getValue();
4282 
4283  SmallString<128> StatsFile;
4284  bool DoSaveStats = false;
4285  if (SaveStats == "obj") {
4286  if (Output.isFilename()) {
4287  StatsFile.assign(Output.getFilename());
4288  llvm::sys::path::remove_filename(StatsFile);
4289  }
4290  DoSaveStats = true;
4291  } else if (SaveStats == "cwd") {
4292  DoSaveStats = true;
4293  } else {
4294  D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
4295  }
4296 
4297  if (DoSaveStats) {
4298  StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
4299  llvm::sys::path::append(StatsFile, BaseName);
4300  llvm::sys::path::replace_extension(StatsFile, "stats");
4301  CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") +
4302  StatsFile));
4303  }
4304  }
4305 
4306  // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
4307  // parser.
4308  // -finclude-default-header flag is for preprocessor,
4309  // do not pass it to other cc1 commands when save-temps is enabled
4310  if (C.getDriver().isSaveTempsEnabled() &&
4311  !isa<PreprocessJobAction>(JA)) {
4312  for (auto Arg : Args.filtered(options::OPT_Xclang)) {
4313  Arg->claim();
4314  if (StringRef(Arg->getValue()) != "-finclude-default-header")
4315  CmdArgs.push_back(Arg->getValue());
4316  }
4317  }
4318  else {
4319  Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
4320  }
4321  for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
4322  A->claim();
4323 
4324  // We translate this by hand to the -cc1 argument, since nightly test uses
4325  // it and developers have been trained to spell it with -mllvm. Both
4326  // spellings are now deprecated and should be removed.
4327  if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
4328  CmdArgs.push_back("-disable-llvm-optzns");
4329  } else {
4330  A->render(Args, CmdArgs);
4331  }
4332  }
4333 
4334  // With -save-temps, we want to save the unoptimized bitcode output from the
4335  // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
4336  // by the frontend.
4337  // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
4338  // has slightly different breakdown between stages.
4339  // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
4340  // pristine IR generated by the frontend. Ideally, a new compile action should
4341  // be added so both IR can be captured.
4342  if (C.getDriver().isSaveTempsEnabled() &&
4343  !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
4344  isa<CompileJobAction>(JA))
4345  CmdArgs.push_back("-disable-llvm-passes");
4346 
4347  if (Output.getType() == types::TY_Dependencies) {
4348  // Handled with other dependency code.
4349  } else if (Output.isFilename()) {
4350  CmdArgs.push_back("-o");
4351  CmdArgs.push_back(Output.getFilename());
4352  } else {
4353  assert(Output.isNothing() && "Invalid output.");
4354  }
4355 
4356  addDashXForInput(Args, Input, CmdArgs);
4357 
4358  if (Input.isFilename())
4359  CmdArgs.push_back(Input.getFilename());
4360  else
4361  Input.getInputArg().renderAsInput(Args, CmdArgs);
4362 
4363  Args.AddAllArgs(CmdArgs, options::OPT_undef);
4364 
4365  const char *Exec = getToolChain().getDriver().getClangProgramPath();
4366 
4367  // Optionally embed the -cc1 level arguments into the debug info, for build
4368  // analysis.
4369  // Also record command line arguments into the debug info if
4370  // -grecord-gcc-switches options is set on.
4371  // By default, -gno-record-gcc-switches is set on and no recording.
4372  if (getToolChain().UseDwarfDebugFlags() ||
4373  Args.hasFlag(options::OPT_grecord_gcc_switches,
4374  options::OPT_gno_record_gcc_switches, false)) {
4375  ArgStringList OriginalArgs;
4376  for (const auto &Arg : Args)
4377  Arg->render(Args, OriginalArgs);
4378 
4379  SmallString<256> Flags;
4380  Flags += Exec;
4381  for (const char *OriginalArg : OriginalArgs) {
4382  SmallString<128> EscapedArg;
4383  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
4384  Flags += " ";
4385  Flags += EscapedArg;
4386  }
4387  CmdArgs.push_back("-dwarf-debug-flags");
4388  CmdArgs.push_back(Args.MakeArgString(Flags));
4389  }
4390 
4391  // Add the split debug info name to the command lines here so we
4392  // can propagate it to the backend.
4393  bool SplitDwarf = SplitDwarfArg && getToolChain().getTriple().isOSLinux() &&
4394  (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4395  isa<BackendJobAction>(JA));
4396  const char *SplitDwarfOut;
4397  if (SplitDwarf) {
4398  CmdArgs.push_back("-split-dwarf-file");
4399  SplitDwarfOut = SplitDebugName(Args, Input);
4400  CmdArgs.push_back(SplitDwarfOut);
4401  }
4402 
4403  // Host-side cuda compilation receives device-side outputs as Inputs[1...].
4404  // Include them with -fcuda-include-gpubinary.
4405  if (IsCuda && Inputs.size() > 1)
4406  for (auto I = std::next(Inputs.begin()), E = Inputs.end(); I != E; ++I) {
4407  CmdArgs.push_back("-fcuda-include-gpubinary");
4408  CmdArgs.push_back(I->getFilename());
4409  }
4410 
4411  // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
4412  // to specify the result of the compile phase on the host, so the meaningful
4413  // device declarations can be identified. Also, -fopenmp-is-device is passed
4414  // along to tell the frontend that it is generating code for a device, so that
4415  // only the relevant declarations are emitted.
4416  if (IsOpenMPDevice) {
4417  CmdArgs.push_back("-fopenmp-is-device");
4418  if (Inputs.size() == 2) {
4419  CmdArgs.push_back("-fopenmp-host-ir-file-path");
4420  CmdArgs.push_back(Args.MakeArgString(Inputs.back().getFilename()));
4421  }
4422  }
4423 
4424  // For all the host OpenMP offloading compile jobs we need to pass the targets
4425  // information using -fopenmp-targets= option.
4426  if (isa<CompileJobAction>(JA) && JA.isHostOffloading(Action::OFK_OpenMP)) {
4427  SmallString<128> TargetInfo("-fopenmp-targets=");
4428 
4429  Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
4430  assert(Tgts && Tgts->getNumValues() &&
4431  "OpenMP offloading has to have targets specified.");
4432  for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
4433  if (i)
4434  TargetInfo += ',';
4435  // We need to get the string from the triple because it may be not exactly
4436  // the same as the one we get directly from the arguments.
4437  llvm::Triple T(Tgts->getValue(i));
4438  TargetInfo += T.getTriple();
4439  }
4440  CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
4441  }
4442 
4443  bool WholeProgramVTables =
4444  Args.hasFlag(options::OPT_fwhole_program_vtables,
4445  options::OPT_fno_whole_program_vtables, false);
4446  if (WholeProgramVTables) {
4447  if (!D.isUsingLTO())
4448  D.Diag(diag::err_drv_argument_only_allowed_with)
4449  << "-fwhole-program-vtables"
4450  << "-flto";
4451  CmdArgs.push_back("-fwhole-program-vtables");
4452  }
4453 
4454  // Finally add the compile command to the compilation.
4455  if (Args.hasArg(options::OPT__SLASH_fallback) &&
4456  Output.getType() == types::TY_Object &&
4457  (InputType == types::TY_C || InputType == types::TY_CXX)) {
4458  auto CLCommand =
4459  getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
4460  C.addCommand(llvm::make_unique<FallbackCommand>(
4461  JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
4462  } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
4463  isa<PrecompileJobAction>(JA)) {
4464  // In /fallback builds, run the main compilation even if the pch generation
4465  // fails, so that the main compilation's fallback to cl.exe runs.
4466  C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
4467  CmdArgs, Inputs));
4468  } else {
4469  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
4470  }
4471 
4472  // Handle the debug info splitting at object creation time if we're
4473  // creating an object.
4474  // TODO: Currently only works on linux with newer objcopy.
4475  if (SplitDwarf && Output.getType() == types::TY_Object)
4476  SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, SplitDwarfOut);
4477 
4478  if (Arg *A = Args.getLastArg(options::OPT_pg))
4479  if (Args.hasArg(options::OPT_fomit_frame_pointer))
4480  D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
4481  << A->getAsString(Args);
4482 
4483  // Claim some arguments which clang supports automatically.
4484 
4485  // -fpch-preprocess is used with gcc to add a special marker in the output to
4486  // include the PCH file. Clang's PTH solution is completely transparent, so we
4487  // do not need to deal with it at all.
4488  Args.ClaimAllArgs(options::OPT_fpch_preprocess);
4489 
4490  // Claim some arguments which clang doesn't support, but we don't
4491  // care to warn the user about.
4492  Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
4493  Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
4494 
4495  // Disable warnings for clang -E -emit-llvm foo.c
4496  Args.ClaimAllArgs(options::OPT_emit_llvm);
4497 }
4498 
4500  // CAUTION! The first constructor argument ("clang") is not arbitrary,
4501  // as it is for other tools. Some operations on a Tool actually test
4502  // whether that tool is Clang based on the Tool's Name as a string.
4503  : Tool("clang", "clang frontend", TC, RF_Full) {}
4504 
4506 
4507 /// Add options related to the Objective-C runtime/ABI.
4508 ///
4509 /// Returns true if the runtime is non-fragile.
4510 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
4511  ArgStringList &cmdArgs,
4512  RewriteKind rewriteKind) const {
4513  // Look for the controlling runtime option.
4514  Arg *runtimeArg =
4515  args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
4516  options::OPT_fobjc_runtime_EQ);
4517 
4518  // Just forward -fobjc-runtime= to the frontend. This supercedes
4519  // options about fragility.
4520  if (runtimeArg &&
4521  runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
4522  ObjCRuntime runtime;
4523  StringRef value = runtimeArg->getValue();
4524  if (runtime.tryParse(value)) {
4525  getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
4526  << value;
4527  }
4528 
4529  runtimeArg->render(args, cmdArgs);
4530  return runtime;
4531  }
4532 
4533  // Otherwise, we'll need the ABI "version". Version numbers are
4534  // slightly confusing for historical reasons:
4535  // 1 - Traditional "fragile" ABI
4536  // 2 - Non-fragile ABI, version 1
4537  // 3 - Non-fragile ABI, version 2
4538  unsigned objcABIVersion = 1;
4539  // If -fobjc-abi-version= is present, use that to set the version.
4540  if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
4541  StringRef value = abiArg->getValue();
4542  if (value == "1")
4543  objcABIVersion = 1;
4544  else if (value == "2")
4545  objcABIVersion = 2;
4546  else if (value == "3")
4547  objcABIVersion = 3;
4548  else
4549  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
4550  } else {
4551  // Otherwise, determine if we are using the non-fragile ABI.
4552  bool nonFragileABIIsDefault =
4553  (rewriteKind == RK_NonFragile ||
4554  (rewriteKind == RK_None &&
4556  if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
4557  options::OPT_fno_objc_nonfragile_abi,
4558  nonFragileABIIsDefault)) {
4559 // Determine the non-fragile ABI version to use.
4560 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
4561  unsigned nonFragileABIVersion = 1;
4562 #else
4563  unsigned nonFragileABIVersion = 2;
4564 #endif
4565 
4566  if (Arg *abiArg =
4567  args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
4568  StringRef value = abiArg->getValue();
4569  if (value == "1")
4570  nonFragileABIVersion = 1;
4571  else if (value == "2")
4572  nonFragileABIVersion = 2;
4573  else
4574  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4575  << value;
4576  }
4577 
4578  objcABIVersion = 1 + nonFragileABIVersion;
4579  } else {
4580  objcABIVersion = 1;
4581  }
4582  }
4583 
4584  // We don't actually care about the ABI version other than whether
4585  // it's non-fragile.
4586  bool isNonFragile = objcABIVersion != 1;
4587 
4588  // If we have no runtime argument, ask the toolchain for its default runtime.
4589  // However, the rewriter only really supports the Mac runtime, so assume that.
4590  ObjCRuntime runtime;
4591  if (!runtimeArg) {
4592  switch (rewriteKind) {
4593  case RK_None:
4594  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4595  break;
4596  case RK_Fragile:
4598  break;
4599  case RK_NonFragile:
4601  break;
4602  }
4603 
4604  // -fnext-runtime
4605  } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
4606  // On Darwin, make this use the default behavior for the toolchain.
4607  if (getToolChain().getTriple().isOSDarwin()) {
4608  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4609 
4610  // Otherwise, build for a generic macosx port.
4611  } else {
4613  }
4614 
4615  // -fgnu-runtime
4616  } else {
4617  assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
4618  // Legacy behaviour is to target the gnustep runtime if we are in
4619  // non-fragile mode or the GCC runtime in fragile mode.
4620  if (isNonFragile)
4621  runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(1, 6));
4622  else
4624  }
4625 
4626  cmdArgs.push_back(
4627  args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
4628  return runtime;
4629 }
4630 
4631 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
4632  bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
4633  I += HaveDash;
4634  return !HaveDash;
4635 }
4636 
4637 namespace {
4638 struct EHFlags {
4639  bool Synch = false;
4640  bool Asynch = false;
4641  bool NoUnwindC = false;
4642 };
4643 } // end anonymous namespace
4644 
4645 /// /EH controls whether to run destructor cleanups when exceptions are
4646 /// thrown. There are three modifiers:
4647 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
4648 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
4649 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
4650 /// - c: Assume that extern "C" functions are implicitly nounwind.
4651 /// The default is /EHs-c-, meaning cleanups are disabled.
4652 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
4653  EHFlags EH;
4654 
4655  std::vector<std::string> EHArgs =
4656  Args.getAllArgValues(options::OPT__SLASH_EH);
4657  for (auto EHVal : EHArgs) {
4658  for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
4659  switch (EHVal[I]) {
4660  case 'a':
4661  EH.Asynch = maybeConsumeDash(EHVal, I);
4662  if (EH.Asynch)
4663  EH.Synch = false;
4664  continue;
4665  case 'c':
4666  EH.NoUnwindC = maybeConsumeDash(EHVal, I);
4667  continue;
4668  case 's':
4669  EH.Synch = maybeConsumeDash(EHVal, I);
4670  if (EH.Synch)
4671  EH.Asynch = false;
4672  continue;
4673  default:
4674  break;
4675  }
4676  D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
4677  break;
4678  }
4679  }
4680  // The /GX, /GX- flags are only processed if there are not /EH flags.
4681  // The default is that /GX is not specified.
4682  if (EHArgs.empty() &&
4683  Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
4684  /*default=*/false)) {
4685  EH.Synch = true;
4686  EH.NoUnwindC = true;
4687  }
4688 
4689  return EH;
4690 }
4691 
4692 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
4693  ArgStringList &CmdArgs,
4695  bool *EmitCodeView) const {
4696  unsigned RTOptionID = options::OPT__SLASH_MT;
4697 
4698  if (Args.hasArg(options::OPT__SLASH_LDd))
4699  // The /LDd option implies /MTd. The dependent lib part can be overridden,
4700  // but defining _DEBUG is sticky.
4701  RTOptionID = options::OPT__SLASH_MTd;
4702 
4703  if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
4704  RTOptionID = A->getOption().getID();
4705 
4706  StringRef FlagForCRT;
4707  switch (RTOptionID) {
4708  case options::OPT__SLASH_MD:
4709  if (Args.hasArg(options::OPT__SLASH_LDd))
4710  CmdArgs.push_back("-D_DEBUG");
4711  CmdArgs.push_back("-D_MT");
4712  CmdArgs.push_back("-D_DLL");
4713  FlagForCRT = "--dependent-lib=msvcrt";
4714  break;
4715  case options::OPT__SLASH_MDd:
4716  CmdArgs.push_back("-D_DEBUG");
4717  CmdArgs.push_back("-D_MT");
4718  CmdArgs.push_back("-D_DLL");
4719  FlagForCRT = "--dependent-lib=msvcrtd";
4720  break;
4721  case options::OPT__SLASH_MT:
4722  if (Args.hasArg(options::OPT__SLASH_LDd))
4723  CmdArgs.push_back("-D_DEBUG");
4724  CmdArgs.push_back("-D_MT");
4725  CmdArgs.push_back("-flto-visibility-public-std");
4726  FlagForCRT = "--dependent-lib=libcmt";
4727  break;
4728  case options::OPT__SLASH_MTd:
4729  CmdArgs.push_back("-D_DEBUG");
4730  CmdArgs.push_back("-D_MT");
4731  CmdArgs.push_back("-flto-visibility-public-std");
4732  FlagForCRT = "--dependent-lib=libcmtd";
4733  break;
4734  default:
4735  llvm_unreachable("Unexpected option ID.");
4736  }
4737 
4738  if (Args.hasArg(options::OPT__SLASH_Zl)) {
4739  CmdArgs.push_back("-D_VC_NODEFAULTLIB");
4740  } else {
4741  CmdArgs.push_back(FlagForCRT.data());
4742 
4743  // This provides POSIX compatibility (maps 'open' to '_open'), which most
4744  // users want. The /Za flag to cl.exe turns this off, but it's not
4745  // implemented in clang.
4746  CmdArgs.push_back("--dependent-lib=oldnames");
4747  }
4748 
4749  // Both /showIncludes and /E (and /EP) write to stdout. Allowing both
4750  // would produce interleaved output, so ignore /showIncludes in such cases.
4751  if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_EP))
4752  if (Arg *A = Args.getLastArg(options::OPT_show_includes))
4753  A->render(Args, CmdArgs);
4754 
4755  // This controls whether or not we emit RTTI data for polymorphic types.
4756  if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
4757  /*default=*/false))
4758  CmdArgs.push_back("-fno-rtti-data");
4759 
4760  // This controls whether or not we emit stack-protector instrumentation.
4761  // In MSVC, Buffer Security Check (/GS) is on by default.
4762  if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
4763  /*default=*/true)) {
4764  CmdArgs.push_back("-stack-protector");
4765  CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
4766  }
4767 
4768  // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
4769  if (Arg *DebugInfoArg =
4770  Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
4771  options::OPT_gline_tables_only)) {
4772  *EmitCodeView = true;
4773  if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
4774  *DebugInfoKind = codegenoptions::LimitedDebugInfo;
4775  else
4776  *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
4777  CmdArgs.push_back("-gcodeview");
4778  } else {
4779  *EmitCodeView = false;
4780  }
4781 
4782  const Driver &D = getToolChain().getDriver();
4783  EHFlags EH = parseClangCLEHFlags(D, Args);
4784  if (EH.Synch || EH.Asynch) {
4785  if (types::isCXX(InputType))
4786  CmdArgs.push_back("-fcxx-exceptions");
4787  CmdArgs.push_back("-fexceptions");
4788  }
4789  if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
4790  CmdArgs.push_back("-fexternc-nounwind");
4791 
4792  // /EP should expand to -E -P.
4793  if (Args.hasArg(options::OPT__SLASH_EP)) {
4794  CmdArgs.push_back("-E");
4795  CmdArgs.push_back("-P");
4796  }
4797 
4798  unsigned VolatileOptionID;
4799  if (getToolChain().getArch() == llvm::Triple::x86_64 ||
4800  getToolChain().getArch() == llvm::Triple::x86)
4801  VolatileOptionID = options::OPT__SLASH_volatile_ms;
4802  else
4803  VolatileOptionID = options::OPT__SLASH_volatile_iso;
4804 
4805  if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
4806  VolatileOptionID = A->getOption().getID();
4807 
4808  if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
4809  CmdArgs.push_back("-fms-volatile");
4810 
4811  Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
4812  Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
4813  if (MostGeneralArg && BestCaseArg)
4814  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
4815  << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
4816 
4817  if (MostGeneralArg) {
4818  Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
4819  Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
4820  Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
4821 
4822  Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
4823  Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
4824  if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
4825  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
4826  << FirstConflict->getAsString(Args)
4827  << SecondConflict->getAsString(Args);
4828 
4829  if (SingleArg)
4830  CmdArgs.push_back("-fms-memptr-rep=single");
4831  else if (MultipleArg)
4832  CmdArgs.push_back("-fms-memptr-rep=multiple");
4833  else
4834  CmdArgs.push_back("-fms-memptr-rep=virtual");
4835  }
4836 
4837  // Parse the default calling convention options.
4838  if (Arg *CCArg =
4839  Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
4840  options::OPT__SLASH_Gz, options::OPT__SLASH_Gv)) {
4841  unsigned DCCOptId = CCArg->getOption().getID();
4842  const char *DCCFlag = nullptr;
4843  bool ArchSupported = true;
4844  llvm::Triple::ArchType Arch = getToolChain().getArch();
4845  switch (DCCOptId) {
4846  case options::OPT__SLASH_Gd:
4847  DCCFlag = "-fdefault-calling-conv=cdecl";
4848  break;
4849  case options::OPT__SLASH_Gr:
4850  ArchSupported = Arch == llvm::Triple::x86;
4851  DCCFlag = "-fdefault-calling-conv=fastcall";
4852  break;
4853  case options::OPT__SLASH_Gz:
4854  ArchSupported = Arch == llvm::Triple::x86;
4855  DCCFlag = "-fdefault-calling-conv=stdcall";
4856  break;
4857  case options::OPT__SLASH_Gv:
4858  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
4859  DCCFlag = "-fdefault-calling-conv=vectorcall";
4860  break;
4861  }
4862 
4863  // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
4864  if (ArchSupported && DCCFlag)
4865  CmdArgs.push_back(DCCFlag);
4866  }
4867 
4868  if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
4869  A->render(Args, CmdArgs);
4870 
4871  if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
4872  CmdArgs.push_back("-fdiagnostics-format");
4873  if (Args.hasArg(options::OPT__SLASH_fallback))
4874  CmdArgs.push_back("msvc-fallback");
4875  else
4876  CmdArgs.push_back("msvc");
4877  }
4878 }
4879 
4880 visualstudio::Compiler *Clang::getCLFallback() const {
4881  if (!CLFallback)
4882  CLFallback.reset(new visualstudio::Compiler(getToolChain()));
4883  return CLFallback.get();
4884 }
4885 
4886 
4887 const char *Clang::getBaseInputName(const ArgList &Args,
4888  const InputInfo &Input) {
4889  return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
4890 }
4891 
4892 const char *Clang::getBaseInputStem(const ArgList &Args,
4893  const InputInfoList &Inputs) {
4894  const char *Str = getBaseInputName(Args, Inputs[0]);
4895 
4896  if (const char *End = strrchr(Str, '.'))
4897  return Args.MakeArgString(std::string(Str, End));
4898 
4899  return Str;
4900 }
4901 
4902 const char *Clang::getDependencyFileName(const ArgList &Args,
4903  const InputInfoList &Inputs) {
4904  // FIXME: Think about this more.
4905  std::string Res;
4906 
4907  if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
4908  std::string Str(OutputOpt->getValue());
4909  Res = Str.substr(0, Str.rfind('.'));
4910  } else {
4911  Res = getBaseInputStem(Args, Inputs);
4912  }
4913  return Args.MakeArgString(Res + ".d");
4914 }
4915 
4916 // Begin ClangAs
4917 
4918 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
4919  ArgStringList &CmdArgs) const {
4920  StringRef CPUName;
4921  StringRef ABIName;
4922  const llvm::Triple &Triple = getToolChain().getTriple();
4923  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
4924 
4925  CmdArgs.push_back("-target-abi");
4926  CmdArgs.push_back(ABIName.data());
4927 }
4928 
4929 void ClangAs::AddX86TargetArgs(const ArgList &Args,
4930  ArgStringList &CmdArgs) const {
4931  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
4932  StringRef Value = A->getValue();
4933  if (Value == "intel" || Value == "att") {
4934  CmdArgs.push_back("-mllvm");
4935  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
4936  } else {
4937  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
4938  << A->getOption().getName() << Value;
4939  }
4940  }
4941 }
4942 
4944  const InputInfo &Output, const InputInfoList &Inputs,
4945  const ArgList &Args,
4946  const char *LinkingOutput) const {
4947  ArgStringList CmdArgs;
4948 
4949  assert(Inputs.size() == 1 && "Unexpected number of inputs.");
4950  const InputInfo &Input = Inputs[0];
4951 
4952  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
4953  const std::string &TripleStr = Triple.getTriple();
4954  const auto &D = getToolChain().getDriver();
4955 
4956  // Don't warn about "clang -w -c foo.s"
4957  Args.ClaimAllArgs(options::OPT_w);
4958  // and "clang -emit-llvm -c foo.s"
4959  Args.ClaimAllArgs(options::OPT_emit_llvm);
4960 
4961  claimNoWarnArgs(Args);
4962 
4963  // Invoke ourselves in -cc1as mode.
4964  //
4965  // FIXME: Implement custom jobs for internal actions.
4966  CmdArgs.push_back("-cc1as");
4967 
4968  // Add the "effective" target triple.
4969  CmdArgs.push_back("-triple");
4970  CmdArgs.push_back(Args.MakeArgString(TripleStr));
4971 
4972  // Set the output mode, we currently only expect to be used as a real
4973  // assembler.
4974  CmdArgs.push_back("-filetype");
4975  CmdArgs.push_back("obj");
4976 
4977  // Set the main file name, so that debug info works even with
4978  // -save-temps or preprocessed assembly.
4979  CmdArgs.push_back("-main-file-name");
4980  CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
4981 
4982  // Add the target cpu
4983  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
4984  if (!CPU.empty()) {
4985  CmdArgs.push_back("-target-cpu");
4986  CmdArgs.push_back(Args.MakeArgString(CPU));
4987  }
4988 
4989  // Add the target features
4990  getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
4991 
4992  // Ignore explicit -force_cpusubtype_ALL option.
4993  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
4994 
4995  // Pass along any -I options so we get proper .include search paths.
4996  Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
4997 
4998  // Determine the original source input.
4999  const Action *SourceAction = &JA;
5000  while (SourceAction->getKind() != Action::InputClass) {
5001  assert(!SourceAction->getInputs().empty() && "unexpected root action!");
5002  SourceAction = SourceAction->getInputs()[0];
5003  }
5004 
5005  // Forward -g and handle debug info related flags, assuming we are dealing
5006  // with an actual assembly file.
5007  bool WantDebug = false;
5008  unsigned DwarfVersion = 0;
5009  Args.ClaimAllArgs(options::OPT_g_Group);
5010  if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
5011  WantDebug = !A->getOption().matches(options::OPT_g0) &&
5012  !A->getOption().matches(options::OPT_ggdb0);
5013  if (WantDebug)
5014  DwarfVersion = DwarfVersionNum(A->getSpelling());
5015  }
5016  if (DwarfVersion == 0)
5017  DwarfVersion = getToolChain().GetDefaultDwarfVersion();
5018 
5020 
5021  if (SourceAction->getType() == types::TY_Asm ||
5022  SourceAction->getType() == types::TY_PP_Asm) {
5023  // You might think that it would be ok to set DebugInfoKind outside of
5024  // the guard for source type, however there is a test which asserts
5025  // that some assembler invocation receives no -debug-info-kind,
5026  // and it's not clear whether that test is just overly restrictive.
5027  DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
5029  // Add the -fdebug-compilation-dir flag if needed.
5030  addDebugCompDirArg(Args, CmdArgs);
5031 
5032  // Set the AT_producer to the clang version when using the integrated
5033  // assembler on assembly source files.
5034  CmdArgs.push_back("-dwarf-debug-producer");
5035  CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
5036 
5037  // And pass along -I options
5038  Args.AddAllArgs(CmdArgs, options::OPT_I);
5039  }
5040  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
5042  RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
5043 
5044 
5045  // Handle -fPIC et al -- the relocation-model affects the assembler
5046  // for some targets.
5047  llvm::Reloc::Model RelocationModel;
5048  unsigned PICLevel;
5049  bool IsPIE;
5050  std::tie(RelocationModel, PICLevel, IsPIE) =
5051  ParsePICArgs(getToolChain(), Args);
5052 
5053  const char *RMName = RelocationModelName(RelocationModel);
5054  if (RMName) {
5055  CmdArgs.push_back("-mrelocation-model");
5056  CmdArgs.push_back(RMName);
5057  }
5058 
5059  // Optionally embed the -cc1as level arguments into the debug info, for build
5060  // analysis.
5061  if (getToolChain().UseDwarfDebugFlags()) {
5062  ArgStringList OriginalArgs;
5063  for (const auto &Arg : Args)
5064  Arg->render(Args, OriginalArgs);
5065 
5066  SmallString<256> Flags;
5067  const char *Exec = getToolChain().getDriver().getClangProgramPath();
5068  Flags += Exec;
5069  for (const char *OriginalArg : OriginalArgs) {
5070  SmallString<128> EscapedArg;
5071  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5072  Flags += " ";
5073  Flags += EscapedArg;
5074  }
5075  CmdArgs.push_back("-dwarf-debug-flags");
5076  CmdArgs.push_back(Args.MakeArgString(Flags));
5077  }
5078 
5079  // FIXME: Add -static support, once we have it.
5080 
5081  // Add target specific flags.
5082  switch (getToolChain().getArch()) {
5083  default:
5084  break;
5085 
5086  case llvm::Triple::mips:
5087  case llvm::Triple::mipsel:
5088  case llvm::Triple::mips64:
5089  case llvm::Triple::mips64el:
5090  AddMIPSTargetArgs(Args, CmdArgs);
5091  break;
5092 
5093  case llvm::Triple::x86:
5094  case llvm::Triple::x86_64:
5095  AddX86TargetArgs(Args, CmdArgs);
5096  break;
5097 
5098  case llvm::Triple::arm:
5099  case llvm::Triple::armeb:
5100  case llvm::Triple::thumb:
5101  case llvm::Triple::thumbeb:
5102  // This isn't in AddARMTargetArgs because we want to do this for assembly
5103  // only, not C/C++.
5104  if (Args.hasFlag(options::OPT_mdefault_build_attributes,
5105  options::OPT_mno_default_build_attributes, true)) {
5106  CmdArgs.push_back("-mllvm");
5107  CmdArgs.push_back("-arm-add-build-attributes");
5108  }
5109  break;
5110  }
5111 
5112  // Consume all the warning flags. Usually this would be handled more
5113  // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
5114  // doesn't handle that so rather than warning about unused flags that are
5115  // actually used, we'll lie by omission instead.
5116  // FIXME: Stop lying and consume only the appropriate driver flags
5117  Args.ClaimAllArgs(options::OPT_W_Group);
5118 
5119  CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
5120  getToolChain().getDriver());
5121 
5122  Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
5123 
5124  assert(Output.isFilename() && "Unexpected lipo output.");
5125  CmdArgs.push_back("-o");
5126  CmdArgs.push_back(Output.getFilename());
5127 
5128  assert(Input.isFilename() && "Invalid input.");
5129  CmdArgs.push_back(Input.getFilename());
5130 
5131  const char *Exec = getToolChain().getDriver().getClangProgramPath();
5132  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5133 
5134  // Handle the debug info splitting at object creation time if we're
5135  // creating an object.
5136  // TODO: Currently only works on linux with newer objcopy.
5137  if (Args.hasArg(options::OPT_gsplit_dwarf) &&
5138  getToolChain().getTriple().isOSLinux())
5139  SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
5140  SplitDebugName(Args, Input));
5141 }
5142 
5143 // Begin OffloadBundler
5144 
5146  const InputInfo &Output,
5147  const InputInfoList &Inputs,
5148  const llvm::opt::ArgList &TCArgs,
5149  const char *LinkingOutput) const {
5150  // The version with only one output is expected to refer to a bundling job.
5151  assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
5152 
5153  // The bundling command looks like this:
5154  // clang-offload-bundler -type=bc
5155  // -targets=host-triple,openmp-triple1,openmp-triple2
5156  // -outputs=input_file
5157  // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5158 
5159  ArgStringList CmdArgs;
5160 
5161  // Get the type.
5162  CmdArgs.push_back(TCArgs.MakeArgString(
5163  Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
5164 
5165  assert(JA.getInputs().size() == Inputs.size() &&
5166  "Not have inputs for all dependence actions??");
5167 
5168  // Get the targets.
5169  SmallString<128> Triples;
5170  Triples += "-targets=";
5171  for (unsigned I = 0; I < Inputs.size(); ++I) {
5172  if (I)
5173  Triples += ',';
5174 
5176  const ToolChain *CurTC = &getToolChain();
5177  const Action *CurDep = JA.getInputs()[I];
5178 
5179  if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
5180  OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
5181  CurKind = A->getOffloadingDeviceKind();
5182  CurTC = TC;
5183  });
5184  }
5185  Triples += Action::GetOffloadKindName(CurKind);
5186  Triples += '-';
5187  Triples += CurTC->getTriple().normalize();
5188  }
5189  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5190 
5191  // Get bundled file command.
5192  CmdArgs.push_back(
5193  TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
5194 
5195  // Get unbundled files command.
5196  SmallString<128> UB;
5197  UB += "-inputs=";
5198  for (unsigned I = 0; I < Inputs.size(); ++I) {
5199  if (I)
5200  UB += ',';
5201  UB += Inputs[I].getFilename();
5202  }
5203  CmdArgs.push_back(TCArgs.MakeArgString(UB));
5204 
5205  // All the inputs are encoded as commands.
5206  C.addCommand(llvm::make_unique<Command>(
5207  JA, *this,
5208  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5209  CmdArgs, None));
5210 }
5211 
5213  Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
5214  const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
5215  const char *LinkingOutput) const {
5216  // The version with multiple outputs is expected to refer to a unbundling job.
5217  auto &UA = cast<OffloadUnbundlingJobAction>(JA);
5218 
5219  // The unbundling command looks like this:
5220  // clang-offload-bundler -type=bc
5221  // -targets=host-triple,openmp-triple1,openmp-triple2
5222  // -inputs=input_file
5223  // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5224  // -unbundle
5225 
5226  ArgStringList CmdArgs;
5227 
5228  assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
5229  InputInfo Input = Inputs.front();
5230 
5231  // Get the type.
5232  CmdArgs.push_back(TCArgs.MakeArgString(
5233  Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
5234 
5235  // Get the targets.
5236  SmallString<128> Triples;
5237  Triples += "-targets=";
5238  auto DepInfo = UA.getDependentActionsInfo();
5239  for (unsigned I = 0; I < DepInfo.size(); ++I) {
5240  if (I)
5241  Triples += ',';
5242 
5243  auto &Dep = DepInfo[I];
5244  Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
5245  Triples += '-';
5246  Triples += Dep.DependentToolChain->getTriple().normalize();
5247  }
5248 
5249  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5250 
5251  // Get bundled file command.
5252  CmdArgs.push_back(
5253  TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
5254 
5255  // Get unbundled files command.
5256  SmallString<128> UB;
5257  UB += "-outputs=";
5258  for (unsigned I = 0; I < Outputs.size(); ++I) {
5259  if (I)
5260  UB += ',';
5261  UB += Outputs[I].getFilename();
5262  }
5263  CmdArgs.push_back(TCArgs.MakeArgString(UB));
5264  CmdArgs.push_back("-unbundle");
5265 
5266  // All the inputs are encoded as commands.
5267  C.addCommand(llvm::make_unique<Command>(
5268  JA, *this,
5269  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5270  CmdArgs, None));
5271 }
const Driver & getDriver() const
Definition: Compilation.h:117
const llvm::Triple & getTriple() const
Definition: ToolChain.h:144
int Position
static const char * getBaseInputName(const llvm::opt::ArgList &Args, const InputInfo &Input)
Definition: Clang.cpp:4887
void handleTargetFeaturesGroup(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier Group)
types::ID getType() const
Definition: InputInfo.h:78
static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple, const ArgList &Args, ArgStringList &CmdArgs, bool ForAS)
Definition: Clang.cpp:313
void ConstructJobMultipleOutputs(Compilation &C, const JobAction &JA, const InputInfoList &Outputs, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
Construct jobs to perform the action JA, writing to the Outputs and with Inputs, and add the jobs to ...
Definition: Clang.cpp:5212
static bool useFramePointerForTargetByDefault(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:528
Represents a version number in the form major[.minor[.subminor[.build]]].
Definition: VersionTuple.h:26
static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC)
Definition: Clang.cpp:483
std::string getClangFullVersion()
Retrieves a string representing the complete clang version, which includes the clang version number...
Definition: Version.cpp:118
unsigned CCPrintHeaders
Set CC_PRINT_HEADERS mode, which causes the frontend to log header include information to CCPrintHead...
Definition: Driver.h:194
void addProfileRTArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
const llvm::Triple & getEffectiveTriple() const
Get the toolchain's effective clang triple.
Definition: ToolChain.h:167
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
static void addExceptionArgs(const ArgList &Args, types::ID InputType, const ToolChain &TC, bool KernelOrKext, const ObjCRuntime &objcRuntime, ArgStringList &CmdArgs)
Adds exception related arguments to the driver command arguments.
Definition: Clang.cpp:412
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:366
StringRef P
FloatABI getSparcFloatABI(const Driver &D, const llvm::opt::ArgList &Args)
Defines types useful for describing an Objective-C runtime.
input_range inputs()
Definition: Action.h:141
bool allowsWeak() const
Does this runtime allow the use of __weak?
Definition: ObjCRuntime.h:192
static void forAllAssociatedToolChains(Compilation &C, const JobAction &JA, const ToolChain &RegularToolChain, llvm::function_ref< void(const ToolChain &)> Work)
Apply Work on the current tool chain RegularToolChain and any other offloading tool chain that is ass...
Definition: Clang.cpp:120
virtual bool useIntegratedAs() const
Check if the toolchain should use the integrated assembler.
Definition: ToolChain.cpp:92
bool isFilename() const
Definition: InputInfo.h:76
void getSystemZTargetFeatures(const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:116
static void CollectArgsForIntegratedAssembler(Compilation &C, const ArgList &Args, ArgStringList &CmdArgs, const Driver &D)
Definition: Clang.cpp:1714
static void QuoteTarget(StringRef Target, SmallVectorImpl< char > &Res)
Definition: Clang.cpp:91
static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args)
Definition: Clang.cpp:50
'gcc' is the Objective-C runtime shipped with GCC, implementing a fragile Objective-C ABI ...
Definition: ObjCRuntime.h:50
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:153
static bool shouldUseFramePointer(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:580
static bool UseRelaxAll(Compilation &C, const ArgList &Args)
Check if -relax-all should be passed to the internal assembler.
Definition: Clang.cpp:853
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
types::ID getType() const
Definition: Action.h:132
static StringRef bytes(const std::vector< T, Allocator > &v)
Definition: ASTWriter.cpp:100
bool embedBitcodeInObject() const
Definition: Driver.h:312
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
'macosx-fragile' is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the fragil...
Definition: ObjCRuntime.h:37
ActionList & getInputs()
Definition: Action.h:134
unsigned CCLogDiagnostics
Set CC_LOG_DIAGNOSTICS mode, which causes the frontend to log diagnostics to CCLogDiagnosticsFilename...
Definition: Driver.h:199
void addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, types::ID InputType) const
OffloadKind getOffloadingDeviceKind() const
Definition: Action.h:182
ActionClass getKind() const
Definition: Action.h:131
Action - Represent an abstract compilation step to perform.
Definition: Action.h:45
static const char * RelocationModelName(llvm::Reloc::Model Model)
Definition: Clang.cpp:951
std::string getAsString() const
Retrieve a string representation of the version number.
static void addPGOAndCoverageFlags(Compilation &C, const Driver &D, const InputInfo &Output, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:712
uint32_t Offset
Definition: CacheTokens.cpp:43
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
static void addDashXForInput(const ArgList &Args, const InputInfo &Input, ArgStringList &CmdArgs)
Add -x lang to CmdArgs for Input.
Definition: Clang.cpp:650
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:170
bool isOptimizationLevelFast(const llvm::opt::ArgList &Args)
bool IsCLMode() const
Whether the driver should follow cl.exe like behavior.
Definition: Driver.h:183
The LLVM OpenMP runtime.
Definition: Driver.h:102
FloatABI getPPCFloatABI(const Driver &D, const llvm::opt::ArgList &Args)
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:65
const Driver & getDriver() const
Definition: ToolChain.h:142
const ToolChain & getToolChain() const
Definition: Tool.h:84
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Clang.cpp:5145
static void getAMDGPUTargetFeatures(const Driver &D, const ArgList &Args, std::vector< StringRef > &Features)
Definition: Clang.cpp:296
detail::InMemoryDirectory::const_iterator I
void addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, types::ID InputType) const
Definition: XRayArgs.cpp:88
bool isSaveTempsEnabled() const
Definition: Driver.h:308
void addDirectoryList(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const char *ArgName, const char *EnvVar)
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:1301
const SmallVectorImpl< AnnotatedLine * >::const_iterator End
Exposes information about the current target.
Definition: TargetInfo.h:54
bool isNeXTFamily() const
Is this runtime basically of the NeXT family of runtimes?
Definition: ObjCRuntime.h:133
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:39
static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs, codegenoptions::DebugInfoKind DebugInfoKind, unsigned DwarfVersion, llvm::DebuggerKind DebuggerTuning)
Definition: Clang.cpp:885
Defines the clang::LangOptions interface.
Emit only debug info necessary for generating line number tables (-gline-tables-only).
static void getWebAssemblyTargetFeatures(const ArgList &Args, std::vector< StringRef > &Features)
Definition: Clang.cpp:291
'macosx' is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the non-fragile AB...
Definition: ObjCRuntime.h:32
bool isForDiagnostics() const
Return true if we're compiling for diagnostics.
Definition: Compilation.h:279
static unsigned DwarfVersionNum(StringRef ArgValue)
Definition: Clang.cpp:876
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:147
Defines version macros and version-related utility functions for Clang.
bool tryParse(StringRef input)
Try to parse an Objective-C runtime specification from the given string.
Definition: ObjCRuntime.cpp:44
static StringRef GetOffloadKindName(OffloadKind Kind)
Return a string containing a offload kind name.
Definition: Action.cpp:137
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input)
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:189
const char * getOffloadingArch() const
Definition: Action.h:183
static const char * getDependencyFileName(const llvm::opt::ArgList &Args, const InputInfoList &Inputs)
Definition: Clang.cpp:4902
unsigned Map[FirstTargetAddressSpace]
The type of a lookup table which maps from language-specific address spaces to target-specific ones...
Definition: AddressSpaces.h:53
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
void getSparcTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
bool isHostOffloading(OffloadKind OKind) const
Check if this action have any offload kinds.
Definition: Action.h:187
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
'gnustep' is the modern non-fragile GNUstep runtime.
Definition: ObjCRuntime.h:53
do v
Definition: arm_acle.h:78
static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args)
Definition: Clang.cpp:62
static bool isSignedCharDefault(const llvm::Triple &Triple)
Definition: Clang.cpp:1272
const char * getFilename() const
Definition: InputInfo.h:84
std::string GetClPchPath(Compilation &C, StringRef BaseName) const
Return the pathname of the pch file in clang-cl mode.
Definition: Driver.cpp:3766
bool embedBitcodeMarkerOnly() const
Definition: Driver.h:313
bool isNonFragile() const
Does this runtime follow the set of implied behaviors for a "non-fragile" ABI?
Definition: ObjCRuntime.h:80
const llvm::opt::Arg * getRTTIArg() const
Definition: ToolChain.h:185
void getAArch64TargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
static bool isNoCommonDefault(const llvm::Triple &Triple)
Definition: Clang.cpp:1301
static void EscapeSpacesAndBackslashes(const char *Arg, SmallVectorImpl< char > &Res)
Definition: Clang.cpp:74
static LLVM_READONLY bool isAlphanumeric(unsigned char c)
Return true if this character is an ASCII letter or digit: [a-zA-Z0-9].
Definition: CharInfo.h:118
static bool getRefinementStep(StringRef In, const Driver &D, const Arg &A, size_t &Position)
This is a helper function for validating the optional refinement step parameter in reciprocal argumen...
Definition: Clang.cpp:149
const char * getShortName() const
Definition: Tool.h:82
const_offload_toolchains_range getOffloadToolChains() const
Definition: Compilation.h:134
Limit generated debug info to reduce size (-fno-standalone-debug).
mips::FloatABI getMipsFloatABI(const Driver &D, const llvm::opt::ArgList &Args)
virtual void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: ToolChain.cpp:637
The legacy name for the LLVM OpenMP runtime from when it was the Intel OpenMP runtime.
Definition: Driver.h:112
void getMIPSTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
llvm::opt::Arg * getLastProfileSampleUseArg(const llvm::opt::ArgList &Args)
unsigned getMajor() const
Retrieve the major version number.
Definition: VersionTuple.h:74
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:487
DiagnosticOptions & getDiagnosticOptions() const
Retrieve the diagnostic options.
Definition: Diagnostic.h:417
bool isLegacyDispatchDefaultForArch(llvm::Triple::ArchType Arch)
The default dispatch mechanism to use for the specified architecture.
Definition: ObjCRuntime.h:98
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
void SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T, const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Output, const char *OutFile)
static void appendUserToPath(SmallVectorImpl< char > &Result)
Definition: Clang.cpp:680
'#include ""' paths, added by 'gcc -iquote'.
const ToolChain & getDefaultToolChain() const
Definition: Compilation.h:119
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Clang.cpp:1897
virtual void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add the clang cc1 arguments for system include paths.
Definition: ToolChain.cpp:542
bool CCCIsCPP() const
Whether the driver is just the preprocessor.
Definition: Driver.h:177
RTTIMode getRTTIMode() const
Definition: ToolChain.h:188
const char * CCPrintHeadersFilename
The file to log CC_PRINT_HEADERS output to, if enabled.
Definition: Driver.h:164
void getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
StringRef Name
Definition: USRFinder.cpp:123
bool empty() const
Determine whether this version information is empty (e.g., all version components are zero)...
Definition: VersionTuple.h:69
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:25
void AddMIPSTargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:4918
Emit location information but do not generate debug info in the output.
std::string SysRoot
sysroot, if present
Definition: Driver.h:146
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
detail::InMemoryDirectory::const_iterator E
bool isOffloading(OffloadKind OKind) const
Definition: Action.h:193
bool areOptimizationsEnabled(const llvm::opt::ArgList &Args)
void getX86TargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
ActionList & getActions()
Definition: Compilation.h:174
virtual bool IsObjCNonFragileABIDefault() const
IsObjCNonFragileABIDefault - Does this tool chain set -fobjc-nonfragile-abi by default.
Definition: ToolChain.h:275
const char * getClangProgramPath() const
Get the path to the main clang executable.
Definition: Driver.h:294
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args)
/EH controls whether to run destructor cleanups when exceptions are thrown.
Definition: Clang.cpp:4652
static void getHexagonTargetFeatures(const ArgList &Args, std::vector< StringRef > &Features)
Definition: Clang.cpp:276
std::string ClangExecutable
The original path to the clang executable.
Definition: Driver.h:130
bool isCXX(ID Id)
isCXX - Is this a "C++" input (C++ and Obj-C++ sources and headers).
Definition: Types.cpp:133
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:1563
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:34
static Optional< unsigned > getSmallDataThreshold(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:314
static bool shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime, const llvm::Triple &Triple)
Definition: Clang.cpp:392
const DiagnosticsEngine & getDiags() const
Definition: Driver.h:282
bool hasCompactBranches(StringRef &CPU)
Definition: Mips.cpp:330
const char * CCLogDiagnosticsFilename
The file to log CC_LOG_DIAGNOSTICS output to, if enabled.
Definition: Driver.h:167
StringRef getSysRoot() const
Returns the sysroot path.
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:484
const char * addFailureResultFile(const char *Name, const JobAction *JA)
addFailureResultFile - Add a file to remove if we crash, and returns its argument.
Definition: Compilation.h:230
Kind getKind() const
Definition: ObjCRuntime.h:75
void getARMTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, std::vector< llvm::StringRef > &Features, bool ForAS)
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:190
bool isNothing() const
Definition: InputInfo.h:75
static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple)
Definition: Clang.cpp:516
const char * getBaseInput() const
Definition: InputInfo.h:79
static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs)
Add a CC1 option to specify the debug compilation directory.
Definition: Clang.cpp:609
static void ParseMRecip(const Driver &D, const ArgList &Args, ArgStringList &OutStrings)
The -mrecip flag requires processing of many optional parameters.
Definition: Clang.cpp:177
Clang(const ToolChain &TC)
Definition: Clang.cpp:4499
static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec)
Vectorize at all optimization levels greater than 1 except for -Oz.
Definition: Clang.cpp:619
static bool maybeConsumeDash(const std::string &EH, size_t &I)
Definition: Clang.cpp:4631
const StringRef Input
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:216
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Clang.cpp:4943
std::string getAsString() const
Definition: ObjCRuntime.cpp:19
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
void AddX86TargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:4929
static bool shouldUseLeafFramePointer(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:593
FormattingAttemptStatus * Status
Definition: Format.cpp:1073
virtual ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const
getDefaultObjCRuntime - Return the default Objective-C runtime for this platform. ...
Definition: ToolChain.cpp:427
static const char * getBaseInputStem(const llvm::opt::ArgList &Args, const InputInfoList &Inputs)
Definition: Clang.cpp:4892
static bool ContainsCompileAction(const Action *A)
Check whether the given input tree contains any compilation actions.
Definition: Clang.cpp:840
static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A)
Definition: Clang.cpp:504
static bool ShouldDisableDwarfDirectory(const ArgList &Args, const ToolChain &TC)
Definition: Clang.cpp:494
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:148
static void RenderDebugInfoCompressionArgs(const ArgList &Args, ArgStringList &CmdArgs, const Driver &D)
Definition: Clang.cpp:920
virtual unsigned GetDefaultDwarfVersion() const
Definition: ToolChain.h:347
unsigned CCGenDiagnostics
Whether the driver is generating diagnostics for debugging purposes.
Definition: Driver.h:202
bool isObjC(ID Id)
isObjC - Is this an "ObjC" input (Obj-C and Obj-C++ sources and headers).
Definition: Types.cpp:120
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:50
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:136