clang  6.0.0
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 "AMDGPU.h"
19 #include "CommonArgs.h"
20 #include "Hexagon.h"
21 #include "InputInfo.h"
22 #include "PS4CPU.h"
23 #include "clang/Basic/CharInfo.h"
26 #include "clang/Basic/Version.h"
27 #include "clang/Config/config.h"
29 #include "clang/Driver/Options.h"
31 #include "clang/Driver/XRayArgs.h"
32 #include "llvm/ADT/StringExtras.h"
33 #include "llvm/Option/ArgList.h"
34 #include "llvm/Support/CodeGen.h"
35 #include "llvm/Support/Compression.h"
36 #include "llvm/Support/FileSystem.h"
37 #include "llvm/Support/Path.h"
38 #include "llvm/Support/Process.h"
39 #include "llvm/Support/TargetParser.h"
40 #include "llvm/Support/YAMLParser.h"
41 
42 #ifdef LLVM_ON_UNIX
43 #include <unistd.h> // For getuid().
44 #endif
45 
46 using namespace clang::driver;
47 using namespace clang::driver::tools;
48 using namespace clang;
49 using namespace llvm::opt;
50 
51 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
52  if (Arg *A =
53  Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
54  if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
55  !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
56  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
57  << A->getBaseArg().getAsString(Args)
58  << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
59  }
60  }
61 }
62 
63 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
64  // In gcc, only ARM checks this, but it seems reasonable to check universally.
65  if (Args.hasArg(options::OPT_static))
66  if (const Arg *A =
67  Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
68  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
69  << "-static";
70 }
71 
72 // Add backslashes to escape spaces and other backslashes.
73 // This is used for the space-separated argument list specified with
74 // the -dwarf-debug-flags option.
75 static void EscapeSpacesAndBackslashes(const char *Arg,
76  SmallVectorImpl<char> &Res) {
77  for (; *Arg; ++Arg) {
78  switch (*Arg) {
79  default:
80  break;
81  case ' ':
82  case '\\':
83  Res.push_back('\\');
84  break;
85  }
86  Res.push_back(*Arg);
87  }
88 }
89 
90 // Quote target names for inclusion in GNU Make dependency files.
91 // Only the characters '$', '#', ' ', '\t' are quoted.
92 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
93  for (unsigned i = 0, e = Target.size(); i != e; ++i) {
94  switch (Target[i]) {
95  case ' ':
96  case '\t':
97  // Escape the preceding backslashes
98  for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
99  Res.push_back('\\');
100 
101  // Escape the space/tab
102  Res.push_back('\\');
103  break;
104  case '$':
105  Res.push_back('$');
106  break;
107  case '#':
108  Res.push_back('\\');
109  break;
110  default:
111  break;
112  }
113 
114  Res.push_back(Target[i]);
115  }
116 }
117 
118 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
119 /// offloading tool chain that is associated with the current action \a JA.
120 static void
122  const ToolChain &RegularToolChain,
123  llvm::function_ref<void(const ToolChain &)> Work) {
124  // Apply Work on the current/regular tool chain.
125  Work(RegularToolChain);
126 
127  // Apply Work on all the offloading tool chains associated with the current
128  // action.
133 
136  for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
137  Work(*II->second);
138  } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
140 
141  //
142  // TODO: Add support for other offloading programming models here.
143  //
144 }
145 
146 /// This is a helper function for validating the optional refinement step
147 /// parameter in reciprocal argument strings. Return false if there is an error
148 /// parsing the refinement step. Otherwise, return true and set the Position
149 /// of the refinement step in the input string.
150 static bool getRefinementStep(StringRef In, const Driver &D,
151  const Arg &A, size_t &Position) {
152  const char RefinementStepToken = ':';
153  Position = In.find(RefinementStepToken);
154  if (Position != StringRef::npos) {
155  StringRef Option = A.getOption().getName();
156  StringRef RefStep = In.substr(Position + 1);
157  // Allow exactly one numeric character for the additional refinement
158  // step parameter. This is reasonable for all currently-supported
159  // operations and architectures because we would expect that a larger value
160  // of refinement steps would cause the estimate "optimization" to
161  // under-perform the native operation. Also, if the estimate does not
162  // converge quickly, it probably will not ever converge, so further
163  // refinement steps will not produce a better answer.
164  if (RefStep.size() != 1) {
165  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
166  return false;
167  }
168  char RefStepChar = RefStep[0];
169  if (RefStepChar < '0' || RefStepChar > '9') {
170  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
171  return false;
172  }
173  }
174  return true;
175 }
176 
177 /// The -mrecip flag requires processing of many optional parameters.
178 static void ParseMRecip(const Driver &D, const ArgList &Args,
179  ArgStringList &OutStrings) {
180  StringRef DisabledPrefixIn = "!";
181  StringRef DisabledPrefixOut = "!";
182  StringRef EnabledPrefixOut = "";
183  StringRef Out = "-mrecip=";
184 
185  Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
186  if (!A)
187  return;
188 
189  unsigned NumOptions = A->getNumValues();
190  if (NumOptions == 0) {
191  // No option is the same as "all".
192  OutStrings.push_back(Args.MakeArgString(Out + "all"));
193  return;
194  }
195 
196  // Pass through "all", "none", or "default" with an optional refinement step.
197  if (NumOptions == 1) {
198  StringRef Val = A->getValue(0);
199  size_t RefStepLoc;
200  if (!getRefinementStep(Val, D, *A, RefStepLoc))
201  return;
202  StringRef ValBase = Val.slice(0, RefStepLoc);
203  if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
204  OutStrings.push_back(Args.MakeArgString(Out + Val));
205  return;
206  }
207  }
208 
209  // Each reciprocal type may be enabled or disabled individually.
210  // Check each input value for validity, concatenate them all back together,
211  // and pass through.
212 
213  llvm::StringMap<bool> OptionStrings;
214  OptionStrings.insert(std::make_pair("divd", false));
215  OptionStrings.insert(std::make_pair("divf", false));
216  OptionStrings.insert(std::make_pair("vec-divd", false));
217  OptionStrings.insert(std::make_pair("vec-divf", false));
218  OptionStrings.insert(std::make_pair("sqrtd", false));
219  OptionStrings.insert(std::make_pair("sqrtf", false));
220  OptionStrings.insert(std::make_pair("vec-sqrtd", false));
221  OptionStrings.insert(std::make_pair("vec-sqrtf", false));
222 
223  for (unsigned i = 0; i != NumOptions; ++i) {
224  StringRef Val = A->getValue(i);
225 
226  bool IsDisabled = Val.startswith(DisabledPrefixIn);
227  // Ignore the disablement token for string matching.
228  if (IsDisabled)
229  Val = Val.substr(1);
230 
231  size_t RefStep;
232  if (!getRefinementStep(Val, D, *A, RefStep))
233  return;
234 
235  StringRef ValBase = Val.slice(0, RefStep);
236  llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
237  if (OptionIter == OptionStrings.end()) {
238  // Try again specifying float suffix.
239  OptionIter = OptionStrings.find(ValBase.str() + 'f');
240  if (OptionIter == OptionStrings.end()) {
241  // The input name did not match any known option string.
242  D.Diag(diag::err_drv_unknown_argument) << Val;
243  return;
244  }
245  // The option was specified without a float or double suffix.
246  // Make sure that the double entry was not already specified.
247  // The float entry will be checked below.
248  if (OptionStrings[ValBase.str() + 'd']) {
249  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
250  return;
251  }
252  }
253 
254  if (OptionIter->second == true) {
255  // Duplicate option specified.
256  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
257  return;
258  }
259 
260  // Mark the matched option as found. Do not allow duplicate specifiers.
261  OptionIter->second = true;
262 
263  // If the precision was not specified, also mark the double entry as found.
264  if (ValBase.back() != 'f' && ValBase.back() != 'd')
265  OptionStrings[ValBase.str() + 'd'] = true;
266 
267  // Build the output string.
268  StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
269  Out = Args.MakeArgString(Out + Prefix + Val);
270  if (i != NumOptions - 1)
271  Out = Args.MakeArgString(Out + ",");
272  }
273 
274  OutStrings.push_back(Args.MakeArgString(Out));
275 }
276 
277 /// The -mprefer-vector-width option accepts either a positive integer
278 /// or the string "none".
279 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
280  ArgStringList &CmdArgs) {
281  Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
282  if (!A)
283  return;
284 
285  StringRef Value = A->getValue();
286  if (Value == "none") {
287  CmdArgs.push_back("-mprefer-vector-width=none");
288  } else {
289  unsigned Width;
290  if (Value.getAsInteger(10, Width)) {
291  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
292  return;
293  }
294  CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
295  }
296 }
297 
298 static void getWebAssemblyTargetFeatures(const ArgList &Args,
299  std::vector<StringRef> &Features) {
300  handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
301 }
302 
303 static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
304  const ArgList &Args, ArgStringList &CmdArgs,
305  bool ForAS) {
306  const Driver &D = TC.getDriver();
307  std::vector<StringRef> Features;
308  switch (Triple.getArch()) {
309  default:
310  break;
311  case llvm::Triple::mips:
312  case llvm::Triple::mipsel:
313  case llvm::Triple::mips64:
314  case llvm::Triple::mips64el:
315  mips::getMIPSTargetFeatures(D, Triple, Args, Features);
316  break;
317 
318  case llvm::Triple::arm:
319  case llvm::Triple::armeb:
320  case llvm::Triple::thumb:
321  case llvm::Triple::thumbeb:
322  arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
323  break;
324 
325  case llvm::Triple::ppc:
326  case llvm::Triple::ppc64:
327  case llvm::Triple::ppc64le:
328  ppc::getPPCTargetFeatures(D, Triple, Args, Features);
329  break;
330  case llvm::Triple::systemz:
331  systemz::getSystemZTargetFeatures(Args, Features);
332  break;
333  case llvm::Triple::aarch64:
334  case llvm::Triple::aarch64_be:
335  aarch64::getAArch64TargetFeatures(D, Args, Features);
336  break;
337  case llvm::Triple::x86:
338  case llvm::Triple::x86_64:
339  x86::getX86TargetFeatures(D, Triple, Args, Features);
340  break;
341  case llvm::Triple::hexagon:
342  hexagon::getHexagonTargetFeatures(D, Args, Features);
343  break;
344  case llvm::Triple::wasm32:
345  case llvm::Triple::wasm64:
346  getWebAssemblyTargetFeatures(Args, Features);
347  break;
348  case llvm::Triple::sparc:
349  case llvm::Triple::sparcel:
350  case llvm::Triple::sparcv9:
351  sparc::getSparcTargetFeatures(D, Args, Features);
352  break;
353  case llvm::Triple::r600:
354  case llvm::Triple::amdgcn:
355  amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
356  break;
357  }
358 
359  // Find the last of each feature.
360  llvm::StringMap<unsigned> LastOpt;
361  for (unsigned I = 0, N = Features.size(); I < N; ++I) {
362  StringRef Name = Features[I];
363  assert(Name[0] == '-' || Name[0] == '+');
364  LastOpt[Name.drop_front(1)] = I;
365  }
366 
367  for (unsigned I = 0, N = Features.size(); I < N; ++I) {
368  // If this feature was overridden, ignore it.
369  StringRef Name = Features[I];
370  llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
371  assert(LastI != LastOpt.end());
372  unsigned Last = LastI->second;
373  if (Last != I)
374  continue;
375 
376  CmdArgs.push_back("-target-feature");
377  CmdArgs.push_back(Name.data());
378  }
379 }
380 
381 static bool
383  const llvm::Triple &Triple) {
384  // We use the zero-cost exception tables for Objective-C if the non-fragile
385  // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
386  // later.
387  if (runtime.isNonFragile())
388  return true;
389 
390  if (!Triple.isMacOSX())
391  return false;
392 
393  return (!Triple.isMacOSXVersionLT(10, 5) &&
394  (Triple.getArch() == llvm::Triple::x86_64 ||
395  Triple.getArch() == llvm::Triple::arm));
396 }
397 
398 /// Adds exception related arguments to the driver command arguments. There's a
399 /// master flag, -fexceptions and also language specific flags to enable/disable
400 /// C++ and Objective-C exceptions. This makes it possible to for example
401 /// disable C++ exceptions but enable Objective-C exceptions.
402 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
403  const ToolChain &TC, bool KernelOrKext,
404  const ObjCRuntime &objcRuntime,
405  ArgStringList &CmdArgs) {
406  const Driver &D = TC.getDriver();
407  const llvm::Triple &Triple = TC.getTriple();
408 
409  if (KernelOrKext) {
410  // -mkernel and -fapple-kext imply no exceptions, so claim exception related
411  // arguments now to avoid warnings about unused arguments.
412  Args.ClaimAllArgs(options::OPT_fexceptions);
413  Args.ClaimAllArgs(options::OPT_fno_exceptions);
414  Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
415  Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
416  Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
417  Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
418  return;
419  }
420 
421  // See if the user explicitly enabled exceptions.
422  bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
423  false);
424 
425  // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
426  // is not necessarily sensible, but follows GCC.
427  if (types::isObjC(InputType) &&
428  Args.hasFlag(options::OPT_fobjc_exceptions,
429  options::OPT_fno_objc_exceptions, true)) {
430  CmdArgs.push_back("-fobjc-exceptions");
431 
432  EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
433  }
434 
435  if (types::isCXX(InputType)) {
436  // Disable C++ EH by default on XCore and PS4.
437  bool CXXExceptionsEnabled =
438  Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
439  Arg *ExceptionArg = Args.getLastArg(
440  options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
441  options::OPT_fexceptions, options::OPT_fno_exceptions);
442  if (ExceptionArg)
443  CXXExceptionsEnabled =
444  ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
445  ExceptionArg->getOption().matches(options::OPT_fexceptions);
446 
447  if (CXXExceptionsEnabled) {
448  if (Triple.isPS4CPU()) {
449  ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
450  assert(ExceptionArg &&
451  "On the PS4 exceptions should only be enabled if passing "
452  "an argument");
453  if (RTTIMode == ToolChain::RM_DisabledExplicitly) {
454  const Arg *RTTIArg = TC.getRTTIArg();
455  assert(RTTIArg && "RTTI disabled explicitly but no RTTIArg!");
456  D.Diag(diag::err_drv_argument_not_allowed_with)
457  << RTTIArg->getAsString(Args) << ExceptionArg->getAsString(Args);
458  } else if (RTTIMode == ToolChain::RM_EnabledImplicitly)
459  D.Diag(diag::warn_drv_enabling_rtti_with_exceptions);
460  } else
462 
463  CmdArgs.push_back("-fcxx-exceptions");
464 
465  EH = true;
466  }
467  }
468 
469  if (EH)
470  CmdArgs.push_back("-fexceptions");
471 }
472 
473 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
474  bool Default = true;
475  if (TC.getTriple().isOSDarwin()) {
476  // The native darwin assembler doesn't support the linker_option directives,
477  // so we disable them if we think the .s file will be passed to it.
478  Default = TC.useIntegratedAs();
479  }
480  return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
481  Default);
482 }
483 
484 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
485  const ToolChain &TC) {
486  bool UseDwarfDirectory =
487  Args.hasFlag(options::OPT_fdwarf_directory_asm,
488  options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
489  return !UseDwarfDirectory;
490 }
491 
492 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
493 // to the corresponding DebugInfoKind.
495  assert(A.getOption().matches(options::OPT_gN_Group) &&
496  "Not a -g option that specifies a debug-info level");
497  if (A.getOption().matches(options::OPT_g0) ||
498  A.getOption().matches(options::OPT_ggdb0))
500  if (A.getOption().matches(options::OPT_gline_tables_only) ||
501  A.getOption().matches(options::OPT_ggdb1))
504 }
505 
506 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
507  switch (Triple.getArch()){
508  default:
509  return false;
510  case llvm::Triple::arm:
511  case llvm::Triple::thumb:
512  // ARM Darwin targets require a frame pointer to be always present to aid
513  // offline debugging via backtraces.
514  return Triple.isOSDarwin();
515  }
516 }
517 
518 static bool useFramePointerForTargetByDefault(const ArgList &Args,
519  const llvm::Triple &Triple) {
520  switch (Triple.getArch()) {
521  case llvm::Triple::xcore:
522  case llvm::Triple::wasm32:
523  case llvm::Triple::wasm64:
524  // XCore never wants frame pointers, regardless of OS.
525  // WebAssembly never wants frame pointers.
526  return false;
527  default:
528  break;
529  }
530 
531  if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) {
532  switch (Triple.getArch()) {
533  // Don't use a frame pointer on linux if optimizing for certain targets.
534  case llvm::Triple::mips64:
535  case llvm::Triple::mips64el:
536  case llvm::Triple::mips:
537  case llvm::Triple::mipsel:
538  case llvm::Triple::ppc:
539  case llvm::Triple::ppc64:
540  case llvm::Triple::ppc64le:
541  case llvm::Triple::systemz:
542  case llvm::Triple::x86:
543  case llvm::Triple::x86_64:
544  return !areOptimizationsEnabled(Args);
545  default:
546  return true;
547  }
548  }
549 
550  if (Triple.isOSWindows()) {
551  switch (Triple.getArch()) {
552  case llvm::Triple::x86:
553  return !areOptimizationsEnabled(Args);
554  case llvm::Triple::x86_64:
555  return Triple.isOSBinFormatMachO();
556  case llvm::Triple::arm:
557  case llvm::Triple::thumb:
558  // Windows on ARM builds with FPO disabled to aid fast stack walking
559  return true;
560  default:
561  // All other supported Windows ISAs use xdata unwind information, so frame
562  // pointers are not generally useful.
563  return false;
564  }
565  }
566 
567  return true;
568 }
569 
570 static bool shouldUseFramePointer(const ArgList &Args,
571  const llvm::Triple &Triple) {
572  if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
573  options::OPT_fomit_frame_pointer))
574  return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
576 
577  if (Args.hasArg(options::OPT_pg))
578  return true;
579 
580  return useFramePointerForTargetByDefault(Args, Triple);
581 }
582 
583 static bool shouldUseLeafFramePointer(const ArgList &Args,
584  const llvm::Triple &Triple) {
585  if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
586  options::OPT_momit_leaf_frame_pointer))
587  return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
588 
589  if (Args.hasArg(options::OPT_pg))
590  return true;
591 
592  if (Triple.isPS4CPU())
593  return false;
594 
595  return useFramePointerForTargetByDefault(Args, Triple);
596 }
597 
598 /// Add a CC1 option to specify the debug compilation directory.
599 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
600  SmallString<128> cwd;
601  if (!llvm::sys::fs::current_path(cwd)) {
602  CmdArgs.push_back("-fdebug-compilation-dir");
603  CmdArgs.push_back(Args.MakeArgString(cwd));
604  }
605 }
606 
607 /// \brief Vectorize at all optimization levels greater than 1 except for -Oz.
608 /// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
609 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
610  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
611  if (A->getOption().matches(options::OPT_O4) ||
612  A->getOption().matches(options::OPT_Ofast))
613  return true;
614 
615  if (A->getOption().matches(options::OPT_O0))
616  return false;
617 
618  assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
619 
620  // Vectorize -Os.
621  StringRef S(A->getValue());
622  if (S == "s")
623  return true;
624 
625  // Don't vectorize -Oz, unless it's the slp vectorizer.
626  if (S == "z")
627  return isSlpVec;
628 
629  unsigned OptLevel = 0;
630  if (S.getAsInteger(10, OptLevel))
631  return false;
632 
633  return OptLevel > 1;
634  }
635 
636  return false;
637 }
638 
639 /// Add -x lang to \p CmdArgs for \p Input.
640 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
641  ArgStringList &CmdArgs) {
642  // When using -verify-pch, we don't want to provide the type
643  // 'precompiled-header' if it was inferred from the file extension
644  if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
645  return;
646 
647  CmdArgs.push_back("-x");
648  if (Args.hasArg(options::OPT_rewrite_objc))
649  CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
650  else {
651  // Map the driver type to the frontend type. This is mostly an identity
652  // mapping, except that the distinction between module interface units
653  // and other source files does not exist at the frontend layer.
654  const char *ClangType;
655  switch (Input.getType()) {
656  case types::TY_CXXModule:
657  ClangType = "c++";
658  break;
659  case types::TY_PP_CXXModule:
660  ClangType = "c++-cpp-output";
661  break;
662  default:
663  ClangType = types::getTypeName(Input.getType());
664  break;
665  }
666  CmdArgs.push_back(ClangType);
667  }
668 }
669 
671 #ifdef LLVM_ON_UNIX
672  const char *Username = getenv("LOGNAME");
673 #else
674  const char *Username = getenv("USERNAME");
675 #endif
676  if (Username) {
677  // Validate that LoginName can be used in a path, and get its length.
678  size_t Len = 0;
679  for (const char *P = Username; *P; ++P, ++Len) {
680  if (!clang::isAlphanumeric(*P) && *P != '_') {
681  Username = nullptr;
682  break;
683  }
684  }
685 
686  if (Username && Len > 0) {
687  Result.append(Username, Username + Len);
688  return;
689  }
690  }
691 
692 // Fallback to user id.
693 #ifdef LLVM_ON_UNIX
694  std::string UID = llvm::utostr(getuid());
695 #else
696  // FIXME: Windows seems to have an 'SID' that might work.
697  std::string UID = "9999";
698 #endif
699  Result.append(UID.begin(), UID.end());
700 }
701 
702 static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
703  const InputInfo &Output, const ArgList &Args,
704  ArgStringList &CmdArgs) {
705 
706  auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
707  options::OPT_fprofile_generate_EQ,
708  options::OPT_fno_profile_generate);
709  if (PGOGenerateArg &&
710  PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
711  PGOGenerateArg = nullptr;
712 
713  auto *ProfileGenerateArg = Args.getLastArg(
714  options::OPT_fprofile_instr_generate,
715  options::OPT_fprofile_instr_generate_EQ,
716  options::OPT_fno_profile_instr_generate);
717  if (ProfileGenerateArg &&
718  ProfileGenerateArg->getOption().matches(
719  options::OPT_fno_profile_instr_generate))
720  ProfileGenerateArg = nullptr;
721 
722  if (PGOGenerateArg && ProfileGenerateArg)
723  D.Diag(diag::err_drv_argument_not_allowed_with)
724  << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
725 
726  auto *ProfileUseArg = getLastProfileUseArg(Args);
727 
728  if (PGOGenerateArg && ProfileUseArg)
729  D.Diag(diag::err_drv_argument_not_allowed_with)
730  << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
731 
732  if (ProfileGenerateArg && ProfileUseArg)
733  D.Diag(diag::err_drv_argument_not_allowed_with)
734  << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
735 
736  if (ProfileGenerateArg) {
737  if (ProfileGenerateArg->getOption().matches(
738  options::OPT_fprofile_instr_generate_EQ))
739  CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
740  ProfileGenerateArg->getValue()));
741  // The default is to use Clang Instrumentation.
742  CmdArgs.push_back("-fprofile-instrument=clang");
743  }
744 
745  if (PGOGenerateArg) {
746  CmdArgs.push_back("-fprofile-instrument=llvm");
747  if (PGOGenerateArg->getOption().matches(
748  options::OPT_fprofile_generate_EQ)) {
749  SmallString<128> Path(PGOGenerateArg->getValue());
750  llvm::sys::path::append(Path, "default_%m.profraw");
751  CmdArgs.push_back(
752  Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
753  }
754  }
755 
756  if (ProfileUseArg) {
757  if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
758  CmdArgs.push_back(Args.MakeArgString(
759  Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
760  else if ((ProfileUseArg->getOption().matches(
761  options::OPT_fprofile_use_EQ) ||
762  ProfileUseArg->getOption().matches(
763  options::OPT_fprofile_instr_use))) {
764  SmallString<128> Path(
765  ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
766  if (Path.empty() || llvm::sys::fs::is_directory(Path))
767  llvm::sys::path::append(Path, "default.profdata");
768  CmdArgs.push_back(
769  Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
770  }
771  }
772 
773  if (Args.hasArg(options::OPT_ftest_coverage) ||
774  Args.hasArg(options::OPT_coverage))
775  CmdArgs.push_back("-femit-coverage-notes");
776  if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
777  false) ||
778  Args.hasArg(options::OPT_coverage))
779  CmdArgs.push_back("-femit-coverage-data");
780 
781  if (Args.hasFlag(options::OPT_fcoverage_mapping,
782  options::OPT_fno_coverage_mapping, false)) {
783  if (!ProfileGenerateArg)
784  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
785  << "-fcoverage-mapping"
786  << "-fprofile-instr-generate";
787 
788  CmdArgs.push_back("-fcoverage-mapping");
789  }
790 
791  if (C.getArgs().hasArg(options::OPT_c) ||
792  C.getArgs().hasArg(options::OPT_S)) {
793  if (Output.isFilename()) {
794  CmdArgs.push_back("-coverage-notes-file");
795  SmallString<128> OutputFilename;
796  if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
797  OutputFilename = FinalOutput->getValue();
798  else
799  OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
800  SmallString<128> CoverageFilename = OutputFilename;
801  if (llvm::sys::path::is_relative(CoverageFilename)) {
802  SmallString<128> Pwd;
803  if (!llvm::sys::fs::current_path(Pwd)) {
804  llvm::sys::path::append(Pwd, CoverageFilename);
805  CoverageFilename.swap(Pwd);
806  }
807  }
808  llvm::sys::path::replace_extension(CoverageFilename, "gcno");
809  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
810 
811  // Leave -fprofile-dir= an unused argument unless .gcda emission is
812  // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
813  // the flag used. There is no -fno-profile-dir, so the user has no
814  // targeted way to suppress the warning.
815  if (Args.hasArg(options::OPT_fprofile_arcs) ||
816  Args.hasArg(options::OPT_coverage)) {
817  CmdArgs.push_back("-coverage-data-file");
818  if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
819  CoverageFilename = FProfileDir->getValue();
820  llvm::sys::path::append(CoverageFilename, OutputFilename);
821  }
822  llvm::sys::path::replace_extension(CoverageFilename, "gcda");
823  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
824  }
825  }
826  }
827 }
828 
829 /// \brief Check whether the given input tree contains any compilation actions.
830 static bool ContainsCompileAction(const Action *A) {
831  if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
832  return true;
833 
834  for (const auto &AI : A->inputs())
835  if (ContainsCompileAction(AI))
836  return true;
837 
838  return false;
839 }
840 
841 /// \brief Check if -relax-all should be passed to the internal assembler.
842 /// This is done by default when compiling non-assembler source with -O0.
843 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
844  bool RelaxDefault = true;
845 
846  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
847  RelaxDefault = A->getOption().matches(options::OPT_O0);
848 
849  if (RelaxDefault) {
850  RelaxDefault = false;
851  for (const auto &Act : C.getActions()) {
852  if (ContainsCompileAction(Act)) {
853  RelaxDefault = true;
854  break;
855  }
856  }
857  }
858 
859  return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
860  RelaxDefault);
861 }
862 
863 // Extract the integer N from a string spelled "-dwarf-N", returning 0
864 // on mismatch. The StringRef input (rather than an Arg) allows
865 // for use by the "-Xassembler" option parser.
866 static unsigned DwarfVersionNum(StringRef ArgValue) {
867  return llvm::StringSwitch<unsigned>(ArgValue)
868  .Case("-gdwarf-2", 2)
869  .Case("-gdwarf-3", 3)
870  .Case("-gdwarf-4", 4)
871  .Case("-gdwarf-5", 5)
872  .Default(0);
873 }
874 
875 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
877  unsigned DwarfVersion,
878  llvm::DebuggerKind DebuggerTuning) {
879  switch (DebugInfoKind) {
881  CmdArgs.push_back("-debug-info-kind=line-tables-only");
882  break;
884  CmdArgs.push_back("-debug-info-kind=limited");
885  break;
887  CmdArgs.push_back("-debug-info-kind=standalone");
888  break;
889  default:
890  break;
891  }
892  if (DwarfVersion > 0)
893  CmdArgs.push_back(
894  Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
895  switch (DebuggerTuning) {
896  case llvm::DebuggerKind::GDB:
897  CmdArgs.push_back("-debugger-tuning=gdb");
898  break;
899  case llvm::DebuggerKind::LLDB:
900  CmdArgs.push_back("-debugger-tuning=lldb");
901  break;
902  case llvm::DebuggerKind::SCE:
903  CmdArgs.push_back("-debugger-tuning=sce");
904  break;
905  default:
906  break;
907  }
908 }
909 
910 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
911  ArgStringList &CmdArgs,
912  const Driver &D) {
913  const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
914  if (!A)
915  return;
916 
917  if (A->getOption().getID() == options::OPT_gz) {
918  if (llvm::zlib::isAvailable())
919  CmdArgs.push_back("-compress-debug-sections");
920  else
921  D.Diag(diag::warn_debug_compression_unavailable);
922  return;
923  }
924 
925  StringRef Value = A->getValue();
926  if (Value == "none") {
927  CmdArgs.push_back("-compress-debug-sections=none");
928  } else if (Value == "zlib" || Value == "zlib-gnu") {
929  if (llvm::zlib::isAvailable()) {
930  CmdArgs.push_back(
931  Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
932  } else {
933  D.Diag(diag::warn_debug_compression_unavailable);
934  }
935  } else {
936  D.Diag(diag::err_drv_unsupported_option_argument)
937  << A->getOption().getName() << Value;
938  }
939 }
940 
941 static const char *RelocationModelName(llvm::Reloc::Model Model) {
942  switch (Model) {
943  case llvm::Reloc::Static:
944  return "static";
945  case llvm::Reloc::PIC_:
946  return "pic";
947  case llvm::Reloc::DynamicNoPIC:
948  return "dynamic-no-pic";
949  case llvm::Reloc::ROPI:
950  return "ropi";
951  case llvm::Reloc::RWPI:
952  return "rwpi";
953  case llvm::Reloc::ROPI_RWPI:
954  return "ropi-rwpi";
955  }
956  llvm_unreachable("Unknown Reloc::Model kind");
957 }
958 
959 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
960  const Driver &D, const ArgList &Args,
961  ArgStringList &CmdArgs,
962  const InputInfo &Output,
963  const InputInfoList &Inputs) const {
964  Arg *A;
965  const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
966 
967  CheckPreprocessingOptions(D, Args);
968 
969  Args.AddLastArg(CmdArgs, options::OPT_C);
970  Args.AddLastArg(CmdArgs, options::OPT_CC);
971 
972  // Handle dependency file generation.
973  if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
974  (A = Args.getLastArg(options::OPT_MD)) ||
975  (A = Args.getLastArg(options::OPT_MMD))) {
976  // Determine the output location.
977  const char *DepFile;
978  if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
979  DepFile = MF->getValue();
980  C.addFailureResultFile(DepFile, &JA);
981  } else if (Output.getType() == types::TY_Dependencies) {
982  DepFile = Output.getFilename();
983  } else if (A->getOption().matches(options::OPT_M) ||
984  A->getOption().matches(options::OPT_MM)) {
985  DepFile = "-";
986  } else {
987  DepFile = getDependencyFileName(Args, Inputs);
988  C.addFailureResultFile(DepFile, &JA);
989  }
990  CmdArgs.push_back("-dependency-file");
991  CmdArgs.push_back(DepFile);
992 
993  // Add a default target if one wasn't specified.
994  if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
995  const char *DepTarget;
996 
997  // If user provided -o, that is the dependency target, except
998  // when we are only generating a dependency file.
999  Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1000  if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1001  DepTarget = OutputOpt->getValue();
1002  } else {
1003  // Otherwise derive from the base input.
1004  //
1005  // FIXME: This should use the computed output file location.
1006  SmallString<128> P(Inputs[0].getBaseInput());
1007  llvm::sys::path::replace_extension(P, "o");
1008  DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1009  }
1010 
1011  if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1012  CmdArgs.push_back("-w");
1013  }
1014  CmdArgs.push_back("-MT");
1016  QuoteTarget(DepTarget, Quoted);
1017  CmdArgs.push_back(Args.MakeArgString(Quoted));
1018  }
1019 
1020  if (A->getOption().matches(options::OPT_M) ||
1021  A->getOption().matches(options::OPT_MD))
1022  CmdArgs.push_back("-sys-header-deps");
1023  if ((isa<PrecompileJobAction>(JA) &&
1024  !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1025  Args.hasArg(options::OPT_fmodule_file_deps))
1026  CmdArgs.push_back("-module-file-deps");
1027  }
1028 
1029  if (Args.hasArg(options::OPT_MG)) {
1030  if (!A || A->getOption().matches(options::OPT_MD) ||
1031  A->getOption().matches(options::OPT_MMD))
1032  D.Diag(diag::err_drv_mg_requires_m_or_mm);
1033  CmdArgs.push_back("-MG");
1034  }
1035 
1036  Args.AddLastArg(CmdArgs, options::OPT_MP);
1037  Args.AddLastArg(CmdArgs, options::OPT_MV);
1038 
1039  // Convert all -MQ <target> args to -MT <quoted target>
1040  for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1041  A->claim();
1042 
1043  if (A->getOption().matches(options::OPT_MQ)) {
1044  CmdArgs.push_back("-MT");
1046  QuoteTarget(A->getValue(), Quoted);
1047  CmdArgs.push_back(Args.MakeArgString(Quoted));
1048 
1049  // -MT flag - no change
1050  } else {
1051  A->render(Args, CmdArgs);
1052  }
1053  }
1054 
1055  // Add offload include arguments specific for CUDA. This must happen before
1056  // we -I or -include anything else, because we must pick up the CUDA headers
1057  // from the particular CUDA installation, rather than from e.g.
1058  // /usr/local/include.
1060  getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1061 
1062  // Add -i* options, and automatically translate to
1063  // -include-pch/-include-pth for transparent PCH support. It's
1064  // wonky, but we include looking for .gch so we can support seamless
1065  // replacement into a build system already set up to be generating
1066  // .gch files.
1067  int YcIndex = -1, YuIndex = -1;
1068  {
1069  int AI = -1;
1070  const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1071  const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1072  for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1073  // Walk the whole i_Group and skip non "-include" flags so that the index
1074  // here matches the index in the next loop below.
1075  ++AI;
1076  if (!A->getOption().matches(options::OPT_include))
1077  continue;
1078  if (YcArg && strcmp(A->getValue(), YcArg->getValue()) == 0)
1079  YcIndex = AI;
1080  if (YuArg && strcmp(A->getValue(), YuArg->getValue()) == 0)
1081  YuIndex = AI;
1082  }
1083  }
1084  if (isa<PrecompileJobAction>(JA) && YcIndex != -1) {
1085  Driver::InputList Inputs;
1086  D.BuildInputs(getToolChain(), C.getArgs(), Inputs);
1087  assert(Inputs.size() == 1 && "Need one input when building pch");
1088  CmdArgs.push_back(Args.MakeArgString(Twine("-find-pch-source=") +
1089  Inputs[0].second->getValue()));
1090  }
1091 
1092  bool RenderedImplicitInclude = false;
1093  int AI = -1;
1094  for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1095  ++AI;
1096 
1097  if (getToolChain().getDriver().IsCLMode() &&
1098  A->getOption().matches(options::OPT_include)) {
1099  // In clang-cl mode, /Ycfoo.h means that all code up to a foo.h
1100  // include is compiled into foo.h, and everything after goes into
1101  // the .obj file. /Yufoo.h means that all includes prior to and including
1102  // foo.h are completely skipped and replaced with a use of the pch file
1103  // for foo.h. (Each flag can have at most one value, multiple /Yc flags
1104  // just mean that the last one wins.) If /Yc and /Yu are both present
1105  // and refer to the same file, /Yc wins.
1106  // Note that OPT__SLASH_FI gets mapped to OPT_include.
1107  // FIXME: The code here assumes that /Yc and /Yu refer to the same file.
1108  // cl.exe seems to support both flags with different values, but that
1109  // seems strange (which flag does /Fp now refer to?), so don't implement
1110  // that until someone needs it.
1111  int PchIndex = YcIndex != -1 ? YcIndex : YuIndex;
1112  if (PchIndex != -1) {
1113  if (isa<PrecompileJobAction>(JA)) {
1114  // When building the pch, skip all includes after the pch.
1115  assert(YcIndex != -1 && PchIndex == YcIndex);
1116  if (AI >= YcIndex)
1117  continue;
1118  } else {
1119  // When using the pch, skip all includes prior to the pch.
1120  if (AI < PchIndex) {
1121  A->claim();
1122  continue;
1123  }
1124  if (AI == PchIndex) {
1125  A->claim();
1126  CmdArgs.push_back("-include-pch");
1127  CmdArgs.push_back(
1128  Args.MakeArgString(D.GetClPchPath(C, A->getValue())));
1129  continue;
1130  }
1131  }
1132  }
1133  } else if (A->getOption().matches(options::OPT_include)) {
1134  // Handling of gcc-style gch precompiled headers.
1135  bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1136  RenderedImplicitInclude = true;
1137 
1138  // Use PCH if the user requested it.
1139  bool UsePCH = D.CCCUsePCH;
1140 
1141  bool FoundPTH = false;
1142  bool FoundPCH = false;
1143  SmallString<128> P(A->getValue());
1144  // We want the files to have a name like foo.h.pch. Add a dummy extension
1145  // so that replace_extension does the right thing.
1146  P += ".dummy";
1147  if (UsePCH) {
1148  llvm::sys::path::replace_extension(P, "pch");
1149  if (llvm::sys::fs::exists(P))
1150  FoundPCH = true;
1151  }
1152 
1153  if (!FoundPCH) {
1154  llvm::sys::path::replace_extension(P, "pth");
1155  if (llvm::sys::fs::exists(P))
1156  FoundPTH = true;
1157  }
1158 
1159  if (!FoundPCH && !FoundPTH) {
1160  llvm::sys::path::replace_extension(P, "gch");
1161  if (llvm::sys::fs::exists(P)) {
1162  FoundPCH = UsePCH;
1163  FoundPTH = !UsePCH;
1164  }
1165  }
1166 
1167  if (FoundPCH || FoundPTH) {
1168  if (IsFirstImplicitInclude) {
1169  A->claim();
1170  if (UsePCH)
1171  CmdArgs.push_back("-include-pch");
1172  else
1173  CmdArgs.push_back("-include-pth");
1174  CmdArgs.push_back(Args.MakeArgString(P));
1175  continue;
1176  } else {
1177  // Ignore the PCH if not first on command line and emit warning.
1178  D.Diag(diag::warn_drv_pch_not_first_include) << P
1179  << A->getAsString(Args);
1180  }
1181  }
1182  } else if (A->getOption().matches(options::OPT_isystem_after)) {
1183  // Handling of paths which must come late. These entries are handled by
1184  // the toolchain itself after the resource dir is inserted in the right
1185  // search order.
1186  // Do not claim the argument so that the use of the argument does not
1187  // silently go unnoticed on toolchains which do not honour the option.
1188  continue;
1189  }
1190 
1191  // Not translated, render as usual.
1192  A->claim();
1193  A->render(Args, CmdArgs);
1194  }
1195 
1196  Args.AddAllArgs(CmdArgs,
1197  {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1198  options::OPT_F, options::OPT_index_header_map});
1199 
1200  // Add -Wp, and -Xpreprocessor if using the preprocessor.
1201 
1202  // FIXME: There is a very unfortunate problem here, some troubled
1203  // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1204  // really support that we would have to parse and then translate
1205  // those options. :(
1206  Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1207  options::OPT_Xpreprocessor);
1208 
1209  // -I- is a deprecated GCC feature, reject it.
1210  if (Arg *A = Args.getLastArg(options::OPT_I_))
1211  D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1212 
1213  // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1214  // -isysroot to the CC1 invocation.
1215  StringRef sysroot = C.getSysRoot();
1216  if (sysroot != "") {
1217  if (!Args.hasArg(options::OPT_isysroot)) {
1218  CmdArgs.push_back("-isysroot");
1219  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1220  }
1221  }
1222 
1223  // Parse additional include paths from environment variables.
1224  // FIXME: We should probably sink the logic for handling these from the
1225  // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1226  // CPATH - included following the user specified includes (but prior to
1227  // builtin and standard includes).
1228  addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1229  // C_INCLUDE_PATH - system includes enabled when compiling C.
1230  addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1231  // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1232  addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1233  // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1234  addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1235  // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1236  addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1237 
1238  // While adding the include arguments, we also attempt to retrieve the
1239  // arguments of related offloading toolchains or arguments that are specific
1240  // of an offloading programming model.
1241 
1242  // Add C++ include arguments, if needed.
1243  if (types::isCXX(Inputs[0].getType()))
1244  forAllAssociatedToolChains(C, JA, getToolChain(),
1245  [&Args, &CmdArgs](const ToolChain &TC) {
1246  TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1247  });
1248 
1249  // Add system include arguments for all targets but IAMCU.
1250  if (!IsIAMCU)
1251  forAllAssociatedToolChains(C, JA, getToolChain(),
1252  [&Args, &CmdArgs](const ToolChain &TC) {
1253  TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1254  });
1255  else {
1256  // For IAMCU add special include arguments.
1257  getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1258  }
1259 }
1260 
1261 // FIXME: Move to target hook.
1262 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1263  switch (Triple.getArch()) {
1264  default:
1265  return true;
1266 
1267  case llvm::Triple::aarch64:
1268  case llvm::Triple::aarch64_be:
1269  case llvm::Triple::arm:
1270  case llvm::Triple::armeb:
1271  case llvm::Triple::thumb:
1272  case llvm::Triple::thumbeb:
1273  if (Triple.isOSDarwin() || Triple.isOSWindows())
1274  return true;
1275  return false;
1276 
1277  case llvm::Triple::ppc:
1278  case llvm::Triple::ppc64:
1279  if (Triple.isOSDarwin())
1280  return true;
1281  return false;
1282 
1283  case llvm::Triple::hexagon:
1284  case llvm::Triple::ppc64le:
1285  case llvm::Triple::systemz:
1286  case llvm::Triple::xcore:
1287  return false;
1288  }
1289 }
1290 
1291 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1292  switch (Triple.getArch()) {
1293  default:
1294  return false;
1295 
1296  case llvm::Triple::xcore:
1297  case llvm::Triple::wasm32:
1298  case llvm::Triple::wasm64:
1299  return true;
1300  }
1301 }
1302 
1303 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1304  ArgStringList &CmdArgs, bool KernelOrKext) const {
1305  // Select the ABI to use.
1306  // FIXME: Support -meabi.
1307  // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1308  const char *ABIName = nullptr;
1309  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1310  ABIName = A->getValue();
1311  else {
1312  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1313  ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1314  }
1315 
1316  CmdArgs.push_back("-target-abi");
1317  CmdArgs.push_back(ABIName);
1318 
1319  // Determine floating point ABI from the options & target defaults.
1320  arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1321  if (ABI == arm::FloatABI::Soft) {
1322  // Floating point operations and argument passing are soft.
1323  // FIXME: This changes CPP defines, we need -target-soft-float.
1324  CmdArgs.push_back("-msoft-float");
1325  CmdArgs.push_back("-mfloat-abi");
1326  CmdArgs.push_back("soft");
1327  } else if (ABI == arm::FloatABI::SoftFP) {
1328  // Floating point operations are hard, but argument passing is soft.
1329  CmdArgs.push_back("-mfloat-abi");
1330  CmdArgs.push_back("soft");
1331  } else {
1332  // Floating point operations and argument passing are hard.
1333  assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1334  CmdArgs.push_back("-mfloat-abi");
1335  CmdArgs.push_back("hard");
1336  }
1337 
1338  // Forward the -mglobal-merge option for explicit control over the pass.
1339  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1340  options::OPT_mno_global_merge)) {
1341  CmdArgs.push_back("-backend-option");
1342  if (A->getOption().matches(options::OPT_mno_global_merge))
1343  CmdArgs.push_back("-arm-global-merge=false");
1344  else
1345  CmdArgs.push_back("-arm-global-merge=true");
1346  }
1347 
1348  if (!Args.hasFlag(options::OPT_mimplicit_float,
1349  options::OPT_mno_implicit_float, true))
1350  CmdArgs.push_back("-no-implicit-float");
1351 }
1352 
1353 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1354  const ArgList &Args, bool KernelOrKext,
1355  ArgStringList &CmdArgs) const {
1356  const ToolChain &TC = getToolChain();
1357 
1358  // Add the target features
1359  getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1360 
1361  // Add target specific flags.
1362  switch (TC.getArch()) {
1363  default:
1364  break;
1365 
1366  case llvm::Triple::arm:
1367  case llvm::Triple::armeb:
1368  case llvm::Triple::thumb:
1369  case llvm::Triple::thumbeb:
1370  // Use the effective triple, which takes into account the deployment target.
1371  AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1372  CmdArgs.push_back("-fallow-half-arguments-and-returns");
1373  break;
1374 
1375  case llvm::Triple::aarch64:
1376  case llvm::Triple::aarch64_be:
1377  AddAArch64TargetArgs(Args, CmdArgs);
1378  CmdArgs.push_back("-fallow-half-arguments-and-returns");
1379  break;
1380 
1381  case llvm::Triple::mips:
1382  case llvm::Triple::mipsel:
1383  case llvm::Triple::mips64:
1384  case llvm::Triple::mips64el:
1385  AddMIPSTargetArgs(Args, CmdArgs);
1386  break;
1387 
1388  case llvm::Triple::ppc:
1389  case llvm::Triple::ppc64:
1390  case llvm::Triple::ppc64le:
1391  AddPPCTargetArgs(Args, CmdArgs);
1392  break;
1393 
1394  case llvm::Triple::sparc:
1395  case llvm::Triple::sparcel:
1396  case llvm::Triple::sparcv9:
1397  AddSparcTargetArgs(Args, CmdArgs);
1398  break;
1399 
1400  case llvm::Triple::systemz:
1401  AddSystemZTargetArgs(Args, CmdArgs);
1402  break;
1403 
1404  case llvm::Triple::x86:
1405  case llvm::Triple::x86_64:
1406  AddX86TargetArgs(Args, CmdArgs);
1407  break;
1408 
1409  case llvm::Triple::lanai:
1410  AddLanaiTargetArgs(Args, CmdArgs);
1411  break;
1412 
1413  case llvm::Triple::hexagon:
1414  AddHexagonTargetArgs(Args, CmdArgs);
1415  break;
1416 
1417  case llvm::Triple::wasm32:
1418  case llvm::Triple::wasm64:
1419  AddWebAssemblyTargetArgs(Args, CmdArgs);
1420  break;
1421  }
1422 }
1423 
1424 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1425  ArgStringList &CmdArgs) const {
1426  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1427 
1428  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1429  Args.hasArg(options::OPT_mkernel) ||
1430  Args.hasArg(options::OPT_fapple_kext))
1431  CmdArgs.push_back("-disable-red-zone");
1432 
1433  if (!Args.hasFlag(options::OPT_mimplicit_float,
1434  options::OPT_mno_implicit_float, true))
1435  CmdArgs.push_back("-no-implicit-float");
1436 
1437  const char *ABIName = nullptr;
1438  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1439  ABIName = A->getValue();
1440  else if (Triple.isOSDarwin())
1441  ABIName = "darwinpcs";
1442  else
1443  ABIName = "aapcs";
1444 
1445  CmdArgs.push_back("-target-abi");
1446  CmdArgs.push_back(ABIName);
1447 
1448  if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1449  options::OPT_mno_fix_cortex_a53_835769)) {
1450  CmdArgs.push_back("-backend-option");
1451  if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1452  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1453  else
1454  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1455  } else if (Triple.isAndroid()) {
1456  // Enabled A53 errata (835769) workaround by default on android
1457  CmdArgs.push_back("-backend-option");
1458  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1459  }
1460 
1461  // Forward the -mglobal-merge option for explicit control over the pass.
1462  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1463  options::OPT_mno_global_merge)) {
1464  CmdArgs.push_back("-backend-option");
1465  if (A->getOption().matches(options::OPT_mno_global_merge))
1466  CmdArgs.push_back("-aarch64-enable-global-merge=false");
1467  else
1468  CmdArgs.push_back("-aarch64-enable-global-merge=true");
1469  }
1470 }
1471 
1472 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1473  ArgStringList &CmdArgs) const {
1474  const Driver &D = getToolChain().getDriver();
1475  StringRef CPUName;
1476  StringRef ABIName;
1477  const llvm::Triple &Triple = getToolChain().getTriple();
1478  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1479 
1480  CmdArgs.push_back("-target-abi");
1481  CmdArgs.push_back(ABIName.data());
1482 
1483  mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1484  if (ABI == mips::FloatABI::Soft) {
1485  // Floating point operations and argument passing are soft.
1486  CmdArgs.push_back("-msoft-float");
1487  CmdArgs.push_back("-mfloat-abi");
1488  CmdArgs.push_back("soft");
1489  } else {
1490  // Floating point operations and argument passing are hard.
1491  assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1492  CmdArgs.push_back("-mfloat-abi");
1493  CmdArgs.push_back("hard");
1494  }
1495 
1496  if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1497  if (A->getOption().matches(options::OPT_mxgot)) {
1498  CmdArgs.push_back("-mllvm");
1499  CmdArgs.push_back("-mxgot");
1500  }
1501  }
1502 
1503  if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1504  options::OPT_mno_ldc1_sdc1)) {
1505  if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1506  CmdArgs.push_back("-mllvm");
1507  CmdArgs.push_back("-mno-ldc1-sdc1");
1508  }
1509  }
1510 
1511  if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1512  options::OPT_mno_check_zero_division)) {
1513  if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1514  CmdArgs.push_back("-mllvm");
1515  CmdArgs.push_back("-mno-check-zero-division");
1516  }
1517  }
1518 
1519  if (Arg *A = Args.getLastArg(options::OPT_G)) {
1520  StringRef v = A->getValue();
1521  CmdArgs.push_back("-mllvm");
1522  CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1523  A->claim();
1524  }
1525 
1526  Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1527  Arg *ABICalls =
1528  Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1529 
1530  // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1531  // -mgpopt is the default for static, -fno-pic environments but these two
1532  // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1533  // the only case where -mllvm -mgpopt is passed.
1534  // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1535  // passed explicitly when compiling something with -mabicalls
1536  // (implictly) in affect. Currently the warning is in the backend.
1537  //
1538  // When the ABI in use is N64, we also need to determine the PIC mode that
1539  // is in use, as -fno-pic for N64 implies -mno-abicalls.
1540  bool NoABICalls =
1541  ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1542 
1543  llvm::Reloc::Model RelocationModel;
1544  unsigned PICLevel;
1545  bool IsPIE;
1546  std::tie(RelocationModel, PICLevel, IsPIE) =
1547  ParsePICArgs(getToolChain(), Args);
1548 
1549  NoABICalls = NoABICalls ||
1550  (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1551 
1552  bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1553  // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1554  if (NoABICalls && (!GPOpt || WantGPOpt)) {
1555  CmdArgs.push_back("-mllvm");
1556  CmdArgs.push_back("-mgpopt");
1557 
1558  Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1559  options::OPT_mno_local_sdata);
1560  Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1561  options::OPT_mno_extern_sdata);
1562  Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1563  options::OPT_mno_embedded_data);
1564  if (LocalSData) {
1565  CmdArgs.push_back("-mllvm");
1566  if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1567  CmdArgs.push_back("-mlocal-sdata=1");
1568  } else {
1569  CmdArgs.push_back("-mlocal-sdata=0");
1570  }
1571  LocalSData->claim();
1572  }
1573 
1574  if (ExternSData) {
1575  CmdArgs.push_back("-mllvm");
1576  if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1577  CmdArgs.push_back("-mextern-sdata=1");
1578  } else {
1579  CmdArgs.push_back("-mextern-sdata=0");
1580  }
1581  ExternSData->claim();
1582  }
1583 
1584  if (EmbeddedData) {
1585  CmdArgs.push_back("-mllvm");
1586  if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1587  CmdArgs.push_back("-membedded-data=1");
1588  } else {
1589  CmdArgs.push_back("-membedded-data=0");
1590  }
1591  EmbeddedData->claim();
1592  }
1593 
1594  } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1595  D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1596 
1597  if (GPOpt)
1598  GPOpt->claim();
1599 
1600  if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1601  StringRef Val = StringRef(A->getValue());
1602  if (mips::hasCompactBranches(CPUName)) {
1603  if (Val == "never" || Val == "always" || Val == "optimal") {
1604  CmdArgs.push_back("-mllvm");
1605  CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1606  } else
1607  D.Diag(diag::err_drv_unsupported_option_argument)
1608  << A->getOption().getName() << Val;
1609  } else
1610  D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1611  }
1612 }
1613 
1614 void Clang::AddPPCTargetArgs(const ArgList &Args,
1615  ArgStringList &CmdArgs) const {
1616  // Select the ABI to use.
1617  const char *ABIName = nullptr;
1618  if (getToolChain().getTriple().isOSLinux())
1619  switch (getToolChain().getArch()) {
1620  case llvm::Triple::ppc64: {
1621  // When targeting a processor that supports QPX, or if QPX is
1622  // specifically enabled, default to using the ABI that supports QPX (so
1623  // long as it is not specifically disabled).
1624  bool HasQPX = false;
1625  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1626  HasQPX = A->getValue() == StringRef("a2q");
1627  HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1628  if (HasQPX) {
1629  ABIName = "elfv1-qpx";
1630  break;
1631  }
1632 
1633  ABIName = "elfv1";
1634  break;
1635  }
1636  case llvm::Triple::ppc64le:
1637  ABIName = "elfv2";
1638  break;
1639  default:
1640  break;
1641  }
1642 
1643  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1644  // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1645  // the option if given as we don't have backend support for any targets
1646  // that don't use the altivec abi.
1647  if (StringRef(A->getValue()) != "altivec")
1648  ABIName = A->getValue();
1649 
1651  ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1652 
1653  if (FloatABI == ppc::FloatABI::Soft) {
1654  // Floating point operations and argument passing are soft.
1655  CmdArgs.push_back("-msoft-float");
1656  CmdArgs.push_back("-mfloat-abi");
1657  CmdArgs.push_back("soft");
1658  } else {
1659  // Floating point operations and argument passing are hard.
1660  assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1661  CmdArgs.push_back("-mfloat-abi");
1662  CmdArgs.push_back("hard");
1663  }
1664 
1665  if (ABIName) {
1666  CmdArgs.push_back("-target-abi");
1667  CmdArgs.push_back(ABIName);
1668  }
1669 }
1670 
1671 void Clang::AddSparcTargetArgs(const ArgList &Args,
1672  ArgStringList &CmdArgs) const {
1674  sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1675 
1676  if (FloatABI == sparc::FloatABI::Soft) {
1677  // Floating point operations and argument passing are soft.
1678  CmdArgs.push_back("-msoft-float");
1679  CmdArgs.push_back("-mfloat-abi");
1680  CmdArgs.push_back("soft");
1681  } else {
1682  // Floating point operations and argument passing are hard.
1683  assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1684  CmdArgs.push_back("-mfloat-abi");
1685  CmdArgs.push_back("hard");
1686  }
1687 }
1688 
1689 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1690  ArgStringList &CmdArgs) const {
1691  if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1692  CmdArgs.push_back("-mbackchain");
1693 }
1694 
1695 void Clang::AddX86TargetArgs(const ArgList &Args,
1696  ArgStringList &CmdArgs) const {
1697  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1698  Args.hasArg(options::OPT_mkernel) ||
1699  Args.hasArg(options::OPT_fapple_kext))
1700  CmdArgs.push_back("-disable-red-zone");
1701 
1702  // Default to avoid implicit floating-point for kernel/kext code, but allow
1703  // that to be overridden with -mno-soft-float.
1704  bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1705  Args.hasArg(options::OPT_fapple_kext));
1706  if (Arg *A = Args.getLastArg(
1707  options::OPT_msoft_float, options::OPT_mno_soft_float,
1708  options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1709  const Option &O = A->getOption();
1710  NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1711  O.matches(options::OPT_msoft_float));
1712  }
1713  if (NoImplicitFloat)
1714  CmdArgs.push_back("-no-implicit-float");
1715 
1716  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1717  StringRef Value = A->getValue();
1718  if (Value == "intel" || Value == "att") {
1719  CmdArgs.push_back("-mllvm");
1720  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1721  } else {
1722  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1723  << A->getOption().getName() << Value;
1724  }
1725  }
1726 
1727  // Set flags to support MCU ABI.
1728  if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1729  CmdArgs.push_back("-mfloat-abi");
1730  CmdArgs.push_back("soft");
1731  CmdArgs.push_back("-mstack-alignment=4");
1732  }
1733 }
1734 
1735 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1736  ArgStringList &CmdArgs) const {
1737  CmdArgs.push_back("-mqdsp6-compat");
1738  CmdArgs.push_back("-Wreturn-type");
1739 
1741  CmdArgs.push_back("-mllvm");
1742  CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1743  Twine(G.getValue())));
1744  }
1745 
1746  if (!Args.hasArg(options::OPT_fno_short_enums))
1747  CmdArgs.push_back("-fshort-enums");
1748  if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1749  CmdArgs.push_back("-mllvm");
1750  CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1751  }
1752  CmdArgs.push_back("-mllvm");
1753  CmdArgs.push_back("-machine-sink-split=0");
1754 }
1755 
1756 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1757  ArgStringList &CmdArgs) const {
1758  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1759  StringRef CPUName = A->getValue();
1760 
1761  CmdArgs.push_back("-target-cpu");
1762  CmdArgs.push_back(Args.MakeArgString(CPUName));
1763  }
1764  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1765  StringRef Value = A->getValue();
1766  // Only support mregparm=4 to support old usage. Report error for all other
1767  // cases.
1768  int Mregparm;
1769  if (Value.getAsInteger(10, Mregparm)) {
1770  if (Mregparm != 4) {
1771  getToolChain().getDriver().Diag(
1772  diag::err_drv_unsupported_option_argument)
1773  << A->getOption().getName() << Value;
1774  }
1775  }
1776  }
1777 }
1778 
1779 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1780  ArgStringList &CmdArgs) const {
1781  // Default to "hidden" visibility.
1782  if (!Args.hasArg(options::OPT_fvisibility_EQ,
1783  options::OPT_fvisibility_ms_compat)) {
1784  CmdArgs.push_back("-fvisibility");
1785  CmdArgs.push_back("hidden");
1786  }
1787 }
1788 
1789 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1790  StringRef Target, const InputInfo &Output,
1791  const InputInfo &Input, const ArgList &Args) const {
1792  // If this is a dry run, do not create the compilation database file.
1793  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1794  return;
1795 
1796  using llvm::yaml::escape;
1797  const Driver &D = getToolChain().getDriver();
1798 
1799  if (!CompilationDatabase) {
1800  std::error_code EC;
1801  auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1802  if (EC) {
1803  D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1804  << EC.message();
1805  return;
1806  }
1807  CompilationDatabase = std::move(File);
1808  }
1809  auto &CDB = *CompilationDatabase;
1810  SmallString<128> Buf;
1811  if (llvm::sys::fs::current_path(Buf))
1812  Buf = ".";
1813  CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1814  CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1815  CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1816  CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1817  Buf = "-x";
1818  Buf += types::getTypeName(Input.getType());
1819  CDB << ", \"" << escape(Buf) << "\"";
1820  if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1821  Buf = "--sysroot=";
1822  Buf += D.SysRoot;
1823  CDB << ", \"" << escape(Buf) << "\"";
1824  }
1825  CDB << ", \"" << escape(Input.getFilename()) << "\"";
1826  for (auto &A: Args) {
1827  auto &O = A->getOption();
1828  // Skip language selection, which is positional.
1829  if (O.getID() == options::OPT_x)
1830  continue;
1831  // Skip writing dependency output and the compilation database itself.
1832  if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1833  continue;
1834  // Skip inputs.
1835  if (O.getKind() == Option::InputClass)
1836  continue;
1837  // All other arguments are quoted and appended.
1838  ArgStringList ASL;
1839  A->render(Args, ASL);
1840  for (auto &it: ASL)
1841  CDB << ", \"" << escape(it) << "\"";
1842  }
1843  Buf = "--target=";
1844  Buf += Target;
1845  CDB << ", \"" << escape(Buf) << "\"]},\n";
1846 }
1847 
1849  const ArgList &Args,
1850  ArgStringList &CmdArgs,
1851  const Driver &D) {
1852  if (UseRelaxAll(C, Args))
1853  CmdArgs.push_back("-mrelax-all");
1854 
1855  // Only default to -mincremental-linker-compatible if we think we are
1856  // targeting the MSVC linker.
1857  bool DefaultIncrementalLinkerCompatible =
1858  C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1859  if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1860  options::OPT_mno_incremental_linker_compatible,
1861  DefaultIncrementalLinkerCompatible))
1862  CmdArgs.push_back("-mincremental-linker-compatible");
1863 
1864  switch (C.getDefaultToolChain().getArch()) {
1865  case llvm::Triple::arm:
1866  case llvm::Triple::armeb:
1867  case llvm::Triple::thumb:
1868  case llvm::Triple::thumbeb:
1869  if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
1870  StringRef Value = A->getValue();
1871  if (Value == "always" || Value == "never" || Value == "arm" ||
1872  Value == "thumb") {
1873  CmdArgs.push_back("-mllvm");
1874  CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
1875  } else {
1876  D.Diag(diag::err_drv_unsupported_option_argument)
1877  << A->getOption().getName() << Value;
1878  }
1879  }
1880  break;
1881  default:
1882  break;
1883  }
1884 
1885  // When passing -I arguments to the assembler we sometimes need to
1886  // unconditionally take the next argument. For example, when parsing
1887  // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
1888  // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
1889  // arg after parsing the '-I' arg.
1890  bool TakeNextArg = false;
1891 
1892  bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
1893  const char *MipsTargetFeature = nullptr;
1894  for (const Arg *A :
1895  Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
1896  A->claim();
1897 
1898  for (StringRef Value : A->getValues()) {
1899  if (TakeNextArg) {
1900  CmdArgs.push_back(Value.data());
1901  TakeNextArg = false;
1902  continue;
1903  }
1904 
1905  if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
1906  Value == "-mbig-obj")
1907  continue; // LLVM handles bigobj automatically
1908 
1909  switch (C.getDefaultToolChain().getArch()) {
1910  default:
1911  break;
1912  case llvm::Triple::thumb:
1913  case llvm::Triple::thumbeb:
1914  case llvm::Triple::arm:
1915  case llvm::Triple::armeb:
1916  if (Value == "-mthumb")
1917  // -mthumb has already been processed in ComputeLLVMTriple()
1918  // recognize but skip over here.
1919  continue;
1920  break;
1921  case llvm::Triple::mips:
1922  case llvm::Triple::mipsel:
1923  case llvm::Triple::mips64:
1924  case llvm::Triple::mips64el:
1925  if (Value == "--trap") {
1926  CmdArgs.push_back("-target-feature");
1927  CmdArgs.push_back("+use-tcc-in-div");
1928  continue;
1929  }
1930  if (Value == "--break") {
1931  CmdArgs.push_back("-target-feature");
1932  CmdArgs.push_back("-use-tcc-in-div");
1933  continue;
1934  }
1935  if (Value.startswith("-msoft-float")) {
1936  CmdArgs.push_back("-target-feature");
1937  CmdArgs.push_back("+soft-float");
1938  continue;
1939  }
1940  if (Value.startswith("-mhard-float")) {
1941  CmdArgs.push_back("-target-feature");
1942  CmdArgs.push_back("-soft-float");
1943  continue;
1944  }
1945 
1946  MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
1947  .Case("-mips1", "+mips1")
1948  .Case("-mips2", "+mips2")
1949  .Case("-mips3", "+mips3")
1950  .Case("-mips4", "+mips4")
1951  .Case("-mips5", "+mips5")
1952  .Case("-mips32", "+mips32")
1953  .Case("-mips32r2", "+mips32r2")
1954  .Case("-mips32r3", "+mips32r3")
1955  .Case("-mips32r5", "+mips32r5")
1956  .Case("-mips32r6", "+mips32r6")
1957  .Case("-mips64", "+mips64")
1958  .Case("-mips64r2", "+mips64r2")
1959  .Case("-mips64r3", "+mips64r3")
1960  .Case("-mips64r5", "+mips64r5")
1961  .Case("-mips64r6", "+mips64r6")
1962  .Default(nullptr);
1963  if (MipsTargetFeature)
1964  continue;
1965  }
1966 
1967  if (Value == "-force_cpusubtype_ALL") {
1968  // Do nothing, this is the default and we don't support anything else.
1969  } else if (Value == "-L") {
1970  CmdArgs.push_back("-msave-temp-labels");
1971  } else if (Value == "--fatal-warnings") {
1972  CmdArgs.push_back("-massembler-fatal-warnings");
1973  } else if (Value == "--noexecstack") {
1974  CmdArgs.push_back("-mnoexecstack");
1975  } else if (Value.startswith("-compress-debug-sections") ||
1976  Value.startswith("--compress-debug-sections") ||
1977  Value == "-nocompress-debug-sections" ||
1978  Value == "--nocompress-debug-sections") {
1979  CmdArgs.push_back(Value.data());
1980  } else if (Value == "-mrelax-relocations=yes" ||
1981  Value == "--mrelax-relocations=yes") {
1982  UseRelaxRelocations = true;
1983  } else if (Value == "-mrelax-relocations=no" ||
1984  Value == "--mrelax-relocations=no") {
1985  UseRelaxRelocations = false;
1986  } else if (Value.startswith("-I")) {
1987  CmdArgs.push_back(Value.data());
1988  // We need to consume the next argument if the current arg is a plain
1989  // -I. The next arg will be the include directory.
1990  if (Value == "-I")
1991  TakeNextArg = true;
1992  } else if (Value.startswith("-gdwarf-")) {
1993  // "-gdwarf-N" options are not cc1as options.
1994  unsigned DwarfVersion = DwarfVersionNum(Value);
1995  if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
1996  CmdArgs.push_back(Value.data());
1997  } else {
1998  RenderDebugEnablingArgs(Args, CmdArgs,
2000  DwarfVersion, llvm::DebuggerKind::Default);
2001  }
2002  } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2003  Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2004  // Do nothing, we'll validate it later.
2005  } else if (Value == "-defsym") {
2006  if (A->getNumValues() != 2) {
2007  D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2008  break;
2009  }
2010  const char *S = A->getValue(1);
2011  auto Pair = StringRef(S).split('=');
2012  auto Sym = Pair.first;
2013  auto SVal = Pair.second;
2014 
2015  if (Sym.empty() || SVal.empty()) {
2016  D.Diag(diag::err_drv_defsym_invalid_format) << S;
2017  break;
2018  }
2019  int64_t IVal;
2020  if (SVal.getAsInteger(0, IVal)) {
2021  D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2022  break;
2023  }
2024  CmdArgs.push_back(Value.data());
2025  TakeNextArg = true;
2026  } else {
2027  D.Diag(diag::err_drv_unsupported_option_argument)
2028  << A->getOption().getName() << Value;
2029  }
2030  }
2031  }
2032  if (UseRelaxRelocations)
2033  CmdArgs.push_back("--mrelax-relocations");
2034  if (MipsTargetFeature != nullptr) {
2035  CmdArgs.push_back("-target-feature");
2036  CmdArgs.push_back(MipsTargetFeature);
2037  }
2038 }
2039 
2040 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2041  bool OFastEnabled, const ArgList &Args,
2042  ArgStringList &CmdArgs) {
2043  // Handle various floating point optimization flags, mapping them to the
2044  // appropriate LLVM code generation flags. This is complicated by several
2045  // "umbrella" flags, so we do this by stepping through the flags incrementally
2046  // adjusting what we think is enabled/disabled, then at the end settting the
2047  // LLVM flags based on the final state.
2048  bool HonorINFs = true;
2049  bool HonorNaNs = true;
2050  // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2051  bool MathErrno = TC.IsMathErrnoDefault();
2052  bool AssociativeMath = false;
2053  bool ReciprocalMath = false;
2054  bool SignedZeros = true;
2055  bool TrappingMath = true;
2056  StringRef DenormalFPMath = "";
2057  StringRef FPContract = "";
2058 
2059  for (const Arg *A : Args) {
2060  switch (A->getOption().getID()) {
2061  // If this isn't an FP option skip the claim below
2062  default: continue;
2063 
2064  // Options controlling individual features
2065  case options::OPT_fhonor_infinities: HonorINFs = true; break;
2066  case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2067  case options::OPT_fhonor_nans: HonorNaNs = true; break;
2068  case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2069  case options::OPT_fmath_errno: MathErrno = true; break;
2070  case options::OPT_fno_math_errno: MathErrno = false; break;
2071  case options::OPT_fassociative_math: AssociativeMath = true; break;
2072  case options::OPT_fno_associative_math: AssociativeMath = false; break;
2073  case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2074  case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2075  case options::OPT_fsigned_zeros: SignedZeros = true; break;
2076  case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2077  case options::OPT_ftrapping_math: TrappingMath = true; break;
2078  case options::OPT_fno_trapping_math: TrappingMath = false; break;
2079 
2080  case options::OPT_fdenormal_fp_math_EQ:
2081  DenormalFPMath = A->getValue();
2082  break;
2083 
2084  // Validate and pass through -fp-contract option.
2085  case options::OPT_ffp_contract: {
2086  StringRef Val = A->getValue();
2087  if (Val == "fast" || Val == "on" || Val == "off")
2088  FPContract = Val;
2089  else
2090  D.Diag(diag::err_drv_unsupported_option_argument)
2091  << A->getOption().getName() << Val;
2092  break;
2093  }
2094 
2095  case options::OPT_ffinite_math_only:
2096  HonorINFs = false;
2097  HonorNaNs = false;
2098  break;
2099  case options::OPT_fno_finite_math_only:
2100  HonorINFs = true;
2101  HonorNaNs = true;
2102  break;
2103 
2104  case options::OPT_funsafe_math_optimizations:
2105  AssociativeMath = true;
2106  ReciprocalMath = true;
2107  SignedZeros = false;
2108  TrappingMath = false;
2109  break;
2110  case options::OPT_fno_unsafe_math_optimizations:
2111  AssociativeMath = false;
2112  ReciprocalMath = false;
2113  SignedZeros = true;
2114  TrappingMath = true;
2115  // -fno_unsafe_math_optimizations restores default denormal handling
2116  DenormalFPMath = "";
2117  break;
2118 
2119  case options::OPT_Ofast:
2120  // If -Ofast is the optimization level, then -ffast-math should be enabled
2121  if (!OFastEnabled)
2122  continue;
2123  LLVM_FALLTHROUGH;
2124  case options::OPT_ffast_math:
2125  HonorINFs = false;
2126  HonorNaNs = false;
2127  MathErrno = false;
2128  AssociativeMath = true;
2129  ReciprocalMath = true;
2130  SignedZeros = false;
2131  TrappingMath = false;
2132  // If fast-math is set then set the fp-contract mode to fast.
2133  FPContract = "fast";
2134  break;
2135  case options::OPT_fno_fast_math:
2136  HonorINFs = true;
2137  HonorNaNs = true;
2138  // Turning on -ffast-math (with either flag) removes the need for
2139  // MathErrno. However, turning *off* -ffast-math merely restores the
2140  // toolchain default (which may be false).
2141  MathErrno = TC.IsMathErrnoDefault();
2142  AssociativeMath = false;
2143  ReciprocalMath = false;
2144  SignedZeros = true;
2145  TrappingMath = true;
2146  // -fno_fast_math restores default denormal and fpcontract handling
2147  DenormalFPMath = "";
2148  FPContract = "";
2149  break;
2150  }
2151 
2152  // If we handled this option claim it
2153  A->claim();
2154  }
2155 
2156  if (!HonorINFs)
2157  CmdArgs.push_back("-menable-no-infs");
2158 
2159  if (!HonorNaNs)
2160  CmdArgs.push_back("-menable-no-nans");
2161 
2162  if (MathErrno)
2163  CmdArgs.push_back("-fmath-errno");
2164 
2165  if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2166  !TrappingMath)
2167  CmdArgs.push_back("-menable-unsafe-fp-math");
2168 
2169  if (!SignedZeros)
2170  CmdArgs.push_back("-fno-signed-zeros");
2171 
2172  if (AssociativeMath && !SignedZeros && !TrappingMath)
2173  CmdArgs.push_back("-mreassociate");
2174 
2175  if (ReciprocalMath)
2176  CmdArgs.push_back("-freciprocal-math");
2177 
2178  if (!TrappingMath)
2179  CmdArgs.push_back("-fno-trapping-math");
2180 
2181  if (!DenormalFPMath.empty())
2182  CmdArgs.push_back(
2183  Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2184 
2185  if (!FPContract.empty())
2186  CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2187 
2188  ParseMRecip(D, Args, CmdArgs);
2189 
2190  // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2191  // individual features enabled by -ffast-math instead of the option itself as
2192  // that's consistent with gcc's behaviour.
2193  if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2194  ReciprocalMath && !SignedZeros && !TrappingMath)
2195  CmdArgs.push_back("-ffast-math");
2196 
2197  // Handle __FINITE_MATH_ONLY__ similarly.
2198  if (!HonorINFs && !HonorNaNs)
2199  CmdArgs.push_back("-ffinite-math-only");
2200 
2201  if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2202  CmdArgs.push_back("-mfpmath");
2203  CmdArgs.push_back(A->getValue());
2204  }
2205 }
2206 
2207 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2208  const llvm::Triple &Triple,
2209  const InputInfo &Input) {
2210  // Enable region store model by default.
2211  CmdArgs.push_back("-analyzer-store=region");
2212 
2213  // Treat blocks as analysis entry points.
2214  CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2215 
2216  CmdArgs.push_back("-analyzer-eagerly-assume");
2217 
2218  // Add default argument set.
2219  if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2220  CmdArgs.push_back("-analyzer-checker=core");
2221  CmdArgs.push_back("-analyzer-checker=apiModeling");
2222 
2223  if (!Triple.isWindowsMSVCEnvironment()) {
2224  CmdArgs.push_back("-analyzer-checker=unix");
2225  } else {
2226  // Enable "unix" checkers that also work on Windows.
2227  CmdArgs.push_back("-analyzer-checker=unix.API");
2228  CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2229  CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2230  CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2231  CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2232  CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2233  }
2234 
2235  // Disable some unix checkers for PS4.
2236  if (Triple.isPS4CPU()) {
2237  CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2238  CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2239  }
2240 
2241  if (Triple.isOSDarwin())
2242  CmdArgs.push_back("-analyzer-checker=osx");
2243 
2244  CmdArgs.push_back("-analyzer-checker=deadcode");
2245 
2246  if (types::isCXX(Input.getType()))
2247  CmdArgs.push_back("-analyzer-checker=cplusplus");
2248 
2249  if (!Triple.isPS4CPU()) {
2250  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2251  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2252  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2253  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2254  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2255  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2256  }
2257 
2258  // Default nullability checks.
2259  CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2260  CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2261  }
2262 
2263  // Set the output format. The default is plist, for (lame) historical reasons.
2264  CmdArgs.push_back("-analyzer-output");
2265  if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2266  CmdArgs.push_back(A->getValue());
2267  else
2268  CmdArgs.push_back("plist");
2269 
2270  // Disable the presentation of standard compiler warnings when using
2271  // --analyze. We only want to show static analyzer diagnostics or frontend
2272  // errors.
2273  CmdArgs.push_back("-w");
2274 
2275  // Add -Xanalyzer arguments when running as analyzer.
2276  Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2277 }
2278 
2279 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2280  ArgStringList &CmdArgs, bool KernelOrKext) {
2281  const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2282 
2283  // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2284  // doesn't even have a stack!
2285  if (EffectiveTriple.isNVPTX())
2286  return;
2287 
2288  // -stack-protector=0 is default.
2289  unsigned StackProtectorLevel = 0;
2290  unsigned DefaultStackProtectorLevel =
2291  TC.GetDefaultStackProtectorLevel(KernelOrKext);
2292 
2293  if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2294  options::OPT_fstack_protector_all,
2295  options::OPT_fstack_protector_strong,
2296  options::OPT_fstack_protector)) {
2297  if (A->getOption().matches(options::OPT_fstack_protector))
2298  StackProtectorLevel =
2299  std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2300  else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2301  StackProtectorLevel = LangOptions::SSPStrong;
2302  else if (A->getOption().matches(options::OPT_fstack_protector_all))
2303  StackProtectorLevel = LangOptions::SSPReq;
2304  } else {
2305  StackProtectorLevel = DefaultStackProtectorLevel;
2306  }
2307 
2308  if (StackProtectorLevel) {
2309  CmdArgs.push_back("-stack-protector");
2310  CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2311  }
2312 
2313  // --param ssp-buffer-size=
2314  for (const Arg *A : Args.filtered(options::OPT__param)) {
2315  StringRef Str(A->getValue());
2316  if (Str.startswith("ssp-buffer-size=")) {
2317  if (StackProtectorLevel) {
2318  CmdArgs.push_back("-stack-protector-buffer-size");
2319  // FIXME: Verify the argument is a valid integer.
2320  CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2321  }
2322  A->claim();
2323  }
2324  }
2325 }
2326 
2327 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2328  const unsigned ForwardedArguments[] = {
2329  options::OPT_cl_opt_disable,
2330  options::OPT_cl_strict_aliasing,
2331  options::OPT_cl_single_precision_constant,
2332  options::OPT_cl_finite_math_only,
2333  options::OPT_cl_kernel_arg_info,
2334  options::OPT_cl_unsafe_math_optimizations,
2335  options::OPT_cl_fast_relaxed_math,
2336  options::OPT_cl_mad_enable,
2337  options::OPT_cl_no_signed_zeros,
2338  options::OPT_cl_denorms_are_zero,
2339  options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2340  };
2341 
2342  if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2343  std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2344  CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2345  }
2346 
2347  for (const auto &Arg : ForwardedArguments)
2348  if (const auto *A = Args.getLastArg(Arg))
2349  CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2350 }
2351 
2352 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2353  ArgStringList &CmdArgs) {
2354  bool ARCMTEnabled = false;
2355  if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2356  if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2357  options::OPT_ccc_arcmt_modify,
2358  options::OPT_ccc_arcmt_migrate)) {
2359  ARCMTEnabled = true;
2360  switch (A->getOption().getID()) {
2361  default: llvm_unreachable("missed a case");
2362  case options::OPT_ccc_arcmt_check:
2363  CmdArgs.push_back("-arcmt-check");
2364  break;
2365  case options::OPT_ccc_arcmt_modify:
2366  CmdArgs.push_back("-arcmt-modify");
2367  break;
2368  case options::OPT_ccc_arcmt_migrate:
2369  CmdArgs.push_back("-arcmt-migrate");
2370  CmdArgs.push_back("-mt-migrate-directory");
2371  CmdArgs.push_back(A->getValue());
2372 
2373  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2374  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2375  break;
2376  }
2377  }
2378  } else {
2379  Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2380  Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2381  Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2382  }
2383 
2384  if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2385  if (ARCMTEnabled)
2386  D.Diag(diag::err_drv_argument_not_allowed_with)
2387  << A->getAsString(Args) << "-ccc-arcmt-migrate";
2388 
2389  CmdArgs.push_back("-mt-migrate-directory");
2390  CmdArgs.push_back(A->getValue());
2391 
2392  if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2393  options::OPT_objcmt_migrate_subscripting,
2394  options::OPT_objcmt_migrate_property)) {
2395  // None specified, means enable them all.
2396  CmdArgs.push_back("-objcmt-migrate-literals");
2397  CmdArgs.push_back("-objcmt-migrate-subscripting");
2398  CmdArgs.push_back("-objcmt-migrate-property");
2399  } else {
2400  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2401  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2402  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2403  }
2404  } else {
2405  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2406  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2407  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2408  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2409  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2410  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2411  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2412  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2413  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2414  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2415  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2416  Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2417  Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2418  Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2419  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2420  Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2421  }
2422 }
2423 
2424 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2425  const ArgList &Args, ArgStringList &CmdArgs) {
2426  // -fbuiltin is default unless -mkernel is used.
2427  bool UseBuiltins =
2428  Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2429  !Args.hasArg(options::OPT_mkernel));
2430  if (!UseBuiltins)
2431  CmdArgs.push_back("-fno-builtin");
2432 
2433  // -ffreestanding implies -fno-builtin.
2434  if (Args.hasArg(options::OPT_ffreestanding))
2435  UseBuiltins = false;
2436 
2437  // Process the -fno-builtin-* options.
2438  for (const auto &Arg : Args) {
2439  const Option &O = Arg->getOption();
2440  if (!O.matches(options::OPT_fno_builtin_))
2441  continue;
2442 
2443  Arg->claim();
2444 
2445  // If -fno-builtin is specified, then there's no need to pass the option to
2446  // the frontend.
2447  if (!UseBuiltins)
2448  continue;
2449 
2450  StringRef FuncName = Arg->getValue();
2451  CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2452  }
2453 
2454  // le32-specific flags:
2455  // -fno-math-builtin: clang should not convert math builtins to intrinsics
2456  // by default.
2457  if (TC.getArch() == llvm::Triple::le32)
2458  CmdArgs.push_back("-fno-math-builtin");
2459 }
2460 
2461 static void RenderModulesOptions(Compilation &C, const Driver &D,
2462  const ArgList &Args, const InputInfo &Input,
2463  const InputInfo &Output,
2464  ArgStringList &CmdArgs, bool &HaveModules) {
2465  // -fmodules enables the use of precompiled modules (off by default).
2466  // Users can pass -fno-cxx-modules to turn off modules support for
2467  // C++/Objective-C++ programs.
2468  bool HaveClangModules = false;
2469  if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2470  bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2471  options::OPT_fno_cxx_modules, true);
2472  if (AllowedInCXX || !types::isCXX(Input.getType())) {
2473  CmdArgs.push_back("-fmodules");
2474  HaveClangModules = true;
2475  }
2476  }
2477 
2478  HaveModules = HaveClangModules;
2479  if (Args.hasArg(options::OPT_fmodules_ts)) {
2480  CmdArgs.push_back("-fmodules-ts");
2481  HaveModules = true;
2482  }
2483 
2484  // -fmodule-maps enables implicit reading of module map files. By default,
2485  // this is enabled if we are using Clang's flavor of precompiled modules.
2486  if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2487  options::OPT_fno_implicit_module_maps, HaveClangModules))
2488  CmdArgs.push_back("-fimplicit-module-maps");
2489 
2490  // -fmodules-decluse checks that modules used are declared so (off by default)
2491  if (Args.hasFlag(options::OPT_fmodules_decluse,
2492  options::OPT_fno_modules_decluse, false))
2493  CmdArgs.push_back("-fmodules-decluse");
2494 
2495  // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2496  // all #included headers are part of modules.
2497  if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2498  options::OPT_fno_modules_strict_decluse, false))
2499  CmdArgs.push_back("-fmodules-strict-decluse");
2500 
2501  // -fno-implicit-modules turns off implicitly compiling modules on demand.
2502  if (!Args.hasFlag(options::OPT_fimplicit_modules,
2503  options::OPT_fno_implicit_modules, HaveClangModules)) {
2504  if (HaveModules)
2505  CmdArgs.push_back("-fno-implicit-modules");
2506  } else if (HaveModules) {
2507  // -fmodule-cache-path specifies where our implicitly-built module files
2508  // should be written.
2509  SmallString<128> Path;
2510  if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2511  Path = A->getValue();
2512 
2513  if (C.isForDiagnostics()) {
2514  // When generating crash reports, we want to emit the modules along with
2515  // the reproduction sources, so we ignore any provided module path.
2516  Path = Output.getFilename();
2517  llvm::sys::path::replace_extension(Path, ".cache");
2518  llvm::sys::path::append(Path, "modules");
2519  } else if (Path.empty()) {
2520  // No module path was provided: use the default.
2521  llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Path);
2522  llvm::sys::path::append(Path, "org.llvm.clang.");
2523  appendUserToPath(Path);
2524  llvm::sys::path::append(Path, "ModuleCache");
2525  }
2526 
2527  const char Arg[] = "-fmodules-cache-path=";
2528  Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2529  CmdArgs.push_back(Args.MakeArgString(Path));
2530  }
2531 
2532  if (HaveModules) {
2533  // -fprebuilt-module-path specifies where to load the prebuilt module files.
2534  for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2535  CmdArgs.push_back(Args.MakeArgString(
2536  std::string("-fprebuilt-module-path=") + A->getValue()));
2537  A->claim();
2538  }
2539  }
2540 
2541  // -fmodule-name specifies the module that is currently being built (or
2542  // used for header checking by -fmodule-maps).
2543  Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2544 
2545  // -fmodule-map-file can be used to specify files containing module
2546  // definitions.
2547  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2548 
2549  // -fbuiltin-module-map can be used to load the clang
2550  // builtin headers modulemap file.
2551  if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2552  SmallString<128> BuiltinModuleMap(D.ResourceDir);
2553  llvm::sys::path::append(BuiltinModuleMap, "include");
2554  llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2555  if (llvm::sys::fs::exists(BuiltinModuleMap))
2556  CmdArgs.push_back(
2557  Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2558  }
2559 
2560  // The -fmodule-file=<name>=<file> form specifies the mapping of module
2561  // names to precompiled module files (the module is loaded only if used).
2562  // The -fmodule-file=<file> form can be used to unconditionally load
2563  // precompiled module files (whether used or not).
2564  if (HaveModules)
2565  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2566  else
2567  Args.ClaimAllArgs(options::OPT_fmodule_file);
2568 
2569  // When building modules and generating crashdumps, we need to dump a module
2570  // dependency VFS alongside the output.
2571  if (HaveClangModules && C.isForDiagnostics()) {
2572  SmallString<128> VFSDir(Output.getFilename());
2573  llvm::sys::path::replace_extension(VFSDir, ".cache");
2574  // Add the cache directory as a temp so the crash diagnostics pick it up.
2575  C.addTempFile(Args.MakeArgString(VFSDir));
2576 
2577  llvm::sys::path::append(VFSDir, "vfs");
2578  CmdArgs.push_back("-module-dependency-dir");
2579  CmdArgs.push_back(Args.MakeArgString(VFSDir));
2580  }
2581 
2582  if (HaveClangModules)
2583  Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2584 
2585  // Pass through all -fmodules-ignore-macro arguments.
2586  Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2587  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2588  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2589 
2590  Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2591 
2592  if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2593  if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2594  D.Diag(diag::err_drv_argument_not_allowed_with)
2595  << A->getAsString(Args) << "-fbuild-session-timestamp";
2596 
2597  llvm::sys::fs::file_status Status;
2598  if (llvm::sys::fs::status(A->getValue(), Status))
2599  D.Diag(diag::err_drv_no_such_file) << A->getValue();
2600  CmdArgs.push_back(
2601  Args.MakeArgString("-fbuild-session-timestamp=" +
2602  Twine((uint64_t)Status.getLastModificationTime()
2603  .time_since_epoch()
2604  .count())));
2605  }
2606 
2607  if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2608  if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2609  options::OPT_fbuild_session_file))
2610  D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2611 
2612  Args.AddLastArg(CmdArgs,
2613  options::OPT_fmodules_validate_once_per_build_session);
2614  }
2615 
2616  Args.AddLastArg(CmdArgs, options::OPT_fmodules_validate_system_headers);
2617  Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2618 }
2619 
2620 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2621  ArgStringList &CmdArgs) {
2622  // -fsigned-char is default.
2623  if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2624  options::OPT_fno_signed_char,
2625  options::OPT_funsigned_char,
2626  options::OPT_fno_unsigned_char)) {
2627  if (A->getOption().matches(options::OPT_funsigned_char) ||
2628  A->getOption().matches(options::OPT_fno_signed_char)) {
2629  CmdArgs.push_back("-fno-signed-char");
2630  }
2631  } else if (!isSignedCharDefault(T)) {
2632  CmdArgs.push_back("-fno-signed-char");
2633  }
2634 
2635  if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2636  options::OPT_fno_short_wchar)) {
2637  if (A->getOption().matches(options::OPT_fshort_wchar)) {
2638  CmdArgs.push_back("-fwchar-type=short");
2639  CmdArgs.push_back("-fno-signed-wchar");
2640  } else {
2641  bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2642  CmdArgs.push_back("-fwchar-type=int");
2643  if (IsARM && !(T.isOSWindows() || T.getOS() == llvm::Triple::NetBSD ||
2644  T.getOS() == llvm::Triple::OpenBSD))
2645  CmdArgs.push_back("-fno-signed-wchar");
2646  else
2647  CmdArgs.push_back("-fsigned-wchar");
2648  }
2649  }
2650 }
2651 
2652 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2653  const llvm::Triple &T, const ArgList &Args,
2654  ObjCRuntime &Runtime, bool InferCovariantReturns,
2655  const InputInfo &Input, ArgStringList &CmdArgs) {
2656  const llvm::Triple::ArchType Arch = TC.getArch();
2657 
2658  // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2659  // is the default. Except for deployment target of 10.5, next runtime is
2660  // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2661  if (Runtime.isNonFragile()) {
2662  if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2663  options::OPT_fno_objc_legacy_dispatch,
2664  Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2665  if (TC.UseObjCMixedDispatch())
2666  CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2667  else
2668  CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2669  }
2670  }
2671 
2672  // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2673  // to do Array/Dictionary subscripting by default.
2674  if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2675  !T.isMacOSXVersionLT(10, 7) &&
2676  Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2677  CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2678 
2679  // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2680  // NOTE: This logic is duplicated in ToolChains.cpp.
2681  if (isObjCAutoRefCount(Args)) {
2682  TC.CheckObjCARC();
2683 
2684  CmdArgs.push_back("-fobjc-arc");
2685 
2686  // FIXME: It seems like this entire block, and several around it should be
2687  // wrapped in isObjC, but for now we just use it here as this is where it
2688  // was being used previously.
2689  if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2690  if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2691  CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2692  else
2693  CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2694  }
2695 
2696  // Allow the user to enable full exceptions code emission.
2697  // We default off for Objective-C, on for Objective-C++.
2698  if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2699  options::OPT_fno_objc_arc_exceptions,
2700  /*default=*/types::isCXX(Input.getType())))
2701  CmdArgs.push_back("-fobjc-arc-exceptions");
2702  }
2703 
2704  // Silence warning for full exception code emission options when explicitly
2705  // set to use no ARC.
2706  if (Args.hasArg(options::OPT_fno_objc_arc)) {
2707  Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2708  Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2709  }
2710 
2711  // -fobjc-infer-related-result-type is the default, except in the Objective-C
2712  // rewriter.
2713  if (InferCovariantReturns)
2714  CmdArgs.push_back("-fno-objc-infer-related-result-type");
2715 
2716  // Pass down -fobjc-weak or -fno-objc-weak if present.
2717  if (types::isObjC(Input.getType())) {
2718  auto WeakArg =
2719  Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
2720  if (!WeakArg) {
2721  // nothing to do
2722  } else if (!Runtime.allowsWeak()) {
2723  if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
2724  D.Diag(diag::err_objc_weak_unsupported);
2725  } else {
2726  WeakArg->render(Args, CmdArgs);
2727  }
2728  }
2729 }
2730 
2731 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
2732  ArgStringList &CmdArgs) {
2733  bool CaretDefault = true;
2734  bool ColumnDefault = true;
2735 
2736  if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
2737  options::OPT__SLASH_diagnostics_column,
2738  options::OPT__SLASH_diagnostics_caret)) {
2739  switch (A->getOption().getID()) {
2740  case options::OPT__SLASH_diagnostics_caret:
2741  CaretDefault = true;
2742  ColumnDefault = true;
2743  break;
2744  case options::OPT__SLASH_diagnostics_column:
2745  CaretDefault = false;
2746  ColumnDefault = true;
2747  break;
2748  case options::OPT__SLASH_diagnostics_classic:
2749  CaretDefault = false;
2750  ColumnDefault = false;
2751  break;
2752  }
2753  }
2754 
2755  // -fcaret-diagnostics is default.
2756  if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
2757  options::OPT_fno_caret_diagnostics, CaretDefault))
2758  CmdArgs.push_back("-fno-caret-diagnostics");
2759 
2760  // -fdiagnostics-fixit-info is default, only pass non-default.
2761  if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
2762  options::OPT_fno_diagnostics_fixit_info))
2763  CmdArgs.push_back("-fno-diagnostics-fixit-info");
2764 
2765  // Enable -fdiagnostics-show-option by default.
2766  if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
2767  options::OPT_fno_diagnostics_show_option))
2768  CmdArgs.push_back("-fdiagnostics-show-option");
2769 
2770  if (const Arg *A =
2771  Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
2772  CmdArgs.push_back("-fdiagnostics-show-category");
2773  CmdArgs.push_back(A->getValue());
2774  }
2775 
2776  if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
2777  options::OPT_fno_diagnostics_show_hotness, false))
2778  CmdArgs.push_back("-fdiagnostics-show-hotness");
2779 
2780  if (const Arg *A =
2781  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
2782  std::string Opt =
2783  std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
2784  CmdArgs.push_back(Args.MakeArgString(Opt));
2785  }
2786 
2787  if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
2788  CmdArgs.push_back("-fdiagnostics-format");
2789  CmdArgs.push_back(A->getValue());
2790  }
2791 
2792  if (const Arg *A = Args.getLastArg(
2793  options::OPT_fdiagnostics_show_note_include_stack,
2794  options::OPT_fno_diagnostics_show_note_include_stack)) {
2795  const Option &O = A->getOption();
2796  if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
2797  CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
2798  else
2799  CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
2800  }
2801 
2802  // Color diagnostics are parsed by the driver directly from argv and later
2803  // re-parsed to construct this job; claim any possible color diagnostic here
2804  // to avoid warn_drv_unused_argument and diagnose bad
2805  // OPT_fdiagnostics_color_EQ values.
2806  for (const Arg *A : Args) {
2807  const Option &O = A->getOption();
2808  if (!O.matches(options::OPT_fcolor_diagnostics) &&
2809  !O.matches(options::OPT_fdiagnostics_color) &&
2810  !O.matches(options::OPT_fno_color_diagnostics) &&
2811  !O.matches(options::OPT_fno_diagnostics_color) &&
2812  !O.matches(options::OPT_fdiagnostics_color_EQ))
2813  continue;
2814 
2815  if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
2816  StringRef Value(A->getValue());
2817  if (Value != "always" && Value != "never" && Value != "auto")
2818  D.Diag(diag::err_drv_clang_unsupported)
2819  << ("-fdiagnostics-color=" + Value).str();
2820  }
2821  A->claim();
2822  }
2823 
2824  if (D.getDiags().getDiagnosticOptions().ShowColors)
2825  CmdArgs.push_back("-fcolor-diagnostics");
2826 
2827  if (Args.hasArg(options::OPT_fansi_escape_codes))
2828  CmdArgs.push_back("-fansi-escape-codes");
2829 
2830  if (!Args.hasFlag(options::OPT_fshow_source_location,
2831  options::OPT_fno_show_source_location))
2832  CmdArgs.push_back("-fno-show-source-location");
2833 
2834  if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
2835  CmdArgs.push_back("-fdiagnostics-absolute-paths");
2836 
2837  if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
2838  ColumnDefault))
2839  CmdArgs.push_back("-fno-show-column");
2840 
2841  if (!Args.hasFlag(options::OPT_fspell_checking,
2842  options::OPT_fno_spell_checking))
2843  CmdArgs.push_back("-fno-spell-checking");
2844 }
2845 
2846 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
2847  const llvm::Triple &T, const ArgList &Args,
2848  bool EmitCodeView, bool IsWindowsMSVC,
2849  ArgStringList &CmdArgs,
2851  const Arg *&SplitDWARFArg) {
2852  if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
2853  options::OPT_fno_debug_info_for_profiling, false))
2854  CmdArgs.push_back("-fdebug-info-for-profiling");
2855 
2856  // The 'g' groups options involve a somewhat intricate sequence of decisions
2857  // about what to pass from the driver to the frontend, but by the time they
2858  // reach cc1 they've been factored into three well-defined orthogonal choices:
2859  // * what level of debug info to generate
2860  // * what dwarf version to write
2861  // * what debugger tuning to use
2862  // This avoids having to monkey around further in cc1 other than to disable
2863  // codeview if not running in a Windows environment. Perhaps even that
2864  // decision should be made in the driver as well though.
2865  unsigned DWARFVersion = 0;
2866  llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
2867 
2868  bool SplitDWARFInlining =
2869  Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
2870  options::OPT_fno_split_dwarf_inlining, true);
2871 
2872  Args.ClaimAllArgs(options::OPT_g_Group);
2873 
2874  SplitDWARFArg = Args.getLastArg(options::OPT_gsplit_dwarf);
2875 
2876  if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
2877  // If the last option explicitly specified a debug-info level, use it.
2878  if (A->getOption().matches(options::OPT_gN_Group)) {
2879  DebugInfoKind = DebugLevelToInfoKind(*A);
2880  // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
2881  // But -gsplit-dwarf is not a g_group option, hence we have to check the
2882  // order explicitly. If -gsplit-dwarf wins, we fix DebugInfoKind later.
2883  // This gets a bit more complicated if you've disabled inline info in the
2884  // skeleton CUs (SplitDWARFInlining) - then there's value in composing
2885  // split-dwarf and line-tables-only, so let those compose naturally in
2886  // that case.
2887  // And if you just turned off debug info, (-gsplit-dwarf -g0) - do that.
2888  if (SplitDWARFArg) {
2889  if (A->getIndex() > SplitDWARFArg->getIndex()) {
2890  if (DebugInfoKind == codegenoptions::NoDebugInfo ||
2891  (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
2892  SplitDWARFInlining))
2893  SplitDWARFArg = nullptr;
2894  } else if (SplitDWARFInlining)
2895  DebugInfoKind = codegenoptions::NoDebugInfo;
2896  }
2897  } else {
2898  // For any other 'g' option, use Limited.
2899  DebugInfoKind = codegenoptions::LimitedDebugInfo;
2900  }
2901  }
2902 
2903  // If a debugger tuning argument appeared, remember it.
2904  if (const Arg *A =
2905  Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
2906  if (A->getOption().matches(options::OPT_glldb))
2907  DebuggerTuning = llvm::DebuggerKind::LLDB;
2908  else if (A->getOption().matches(options::OPT_gsce))
2909  DebuggerTuning = llvm::DebuggerKind::SCE;
2910  else
2911  DebuggerTuning = llvm::DebuggerKind::GDB;
2912  }
2913 
2914  // If a -gdwarf argument appeared, remember it.
2915  if (const Arg *A =
2916  Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
2917  options::OPT_gdwarf_4, options::OPT_gdwarf_5))
2918  DWARFVersion = DwarfVersionNum(A->getSpelling());
2919 
2920  // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
2921  // argument parsing.
2922  if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) {
2923  // DWARFVersion remains at 0 if no explicit choice was made.
2924  CmdArgs.push_back("-gcodeview");
2925  } else if (DWARFVersion == 0 &&
2926  DebugInfoKind != codegenoptions::NoDebugInfo) {
2927  DWARFVersion = TC.GetDefaultDwarfVersion();
2928  }
2929 
2930  // We ignore flag -gstrict-dwarf for now.
2931  // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
2932  Args.ClaimAllArgs(options::OPT_g_flags_Group);
2933 
2934  // Column info is included by default for everything except SCE and CodeView.
2935  // Clang doesn't track end columns, just starting columns, which, in theory,
2936  // is fine for CodeView (and PDB). In practice, however, the Microsoft
2937  // debuggers don't handle missing end columns well, so it's better not to
2938  // include any column info.
2939  if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
2940  /*Default=*/!(IsWindowsMSVC && EmitCodeView) &&
2941  DebuggerTuning != llvm::DebuggerKind::SCE))
2942  CmdArgs.push_back("-dwarf-column-info");
2943 
2944  // FIXME: Move backend command line options to the module.
2945  // If -gline-tables-only is the last option it wins.
2946  if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
2947  Args.hasArg(options::OPT_gmodules)) {
2948  DebugInfoKind = codegenoptions::LimitedDebugInfo;
2949  CmdArgs.push_back("-dwarf-ext-refs");
2950  CmdArgs.push_back("-fmodule-format=obj");
2951  }
2952 
2953  // -gsplit-dwarf should turn on -g and enable the backend dwarf
2954  // splitting and extraction.
2955  // FIXME: Currently only works on Linux.
2956  if (T.isOSLinux()) {
2957  if (!SplitDWARFInlining)
2958  CmdArgs.push_back("-fno-split-dwarf-inlining");
2959 
2960  if (SplitDWARFArg) {
2961  if (DebugInfoKind == codegenoptions::NoDebugInfo)
2962  DebugInfoKind = codegenoptions::LimitedDebugInfo;
2963  CmdArgs.push_back("-enable-split-dwarf");
2964  }
2965  }
2966 
2967  // After we've dealt with all combinations of things that could
2968  // make DebugInfoKind be other than None or DebugLineTablesOnly,
2969  // figure out if we need to "upgrade" it to standalone debug info.
2970  // We parse these two '-f' options whether or not they will be used,
2971  // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
2972  bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
2973  options::OPT_fno_standalone_debug,
2975  if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
2976  DebugInfoKind = codegenoptions::FullDebugInfo;
2977 
2978  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
2979  DebuggerTuning);
2980 
2981  // -fdebug-macro turns on macro debug info generation.
2982  if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
2983  false))
2984  CmdArgs.push_back("-debug-info-macro");
2985 
2986  // -ggnu-pubnames turns on gnu style pubnames in the backend.
2987  if (Args.hasArg(options::OPT_ggnu_pubnames))
2988  CmdArgs.push_back("-ggnu-pubnames");
2989 
2990  // -gdwarf-aranges turns on the emission of the aranges section in the
2991  // backend.
2992  // Always enabled for SCE tuning.
2993  if (Args.hasArg(options::OPT_gdwarf_aranges) ||
2994  DebuggerTuning == llvm::DebuggerKind::SCE) {
2995  CmdArgs.push_back("-backend-option");
2996  CmdArgs.push_back("-generate-arange-section");
2997  }
2998 
2999  if (Args.hasFlag(options::OPT_fdebug_types_section,
3000  options::OPT_fno_debug_types_section, false)) {
3001  CmdArgs.push_back("-backend-option");
3002  CmdArgs.push_back("-generate-type-units");
3003  }
3004 
3005  // Decide how to render forward declarations of template instantiations.
3006  // SCE wants full descriptions, others just get them in the name.
3007  if (DebuggerTuning == llvm::DebuggerKind::SCE)
3008  CmdArgs.push_back("-debug-forward-template-params");
3009 
3010  // Do we need to explicitly import anonymous namespaces into the parent scope?
3011  if (DebuggerTuning == llvm::DebuggerKind::SCE)
3012  CmdArgs.push_back("-dwarf-explicit-import");
3013 
3014  RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
3015 }
3016 
3018  const InputInfo &Output, const InputInfoList &Inputs,
3019  const ArgList &Args, const char *LinkingOutput) const {
3020  const llvm::Triple &RawTriple = getToolChain().getTriple();
3021  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
3022  const std::string &TripleStr = Triple.getTriple();
3023 
3024  bool KernelOrKext =
3025  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3026  const Driver &D = getToolChain().getDriver();
3027  ArgStringList CmdArgs;
3028 
3029  // Check number of inputs for sanity. We need at least one input.
3030  assert(Inputs.size() >= 1 && "Must have at least one input.");
3031  const InputInfo &Input = Inputs[0];
3032  // CUDA compilation may have multiple inputs (source file + results of
3033  // device-side compilations). OpenMP device jobs also take the host IR as a
3034  // second input. All other jobs are expected to have exactly one
3035  // input.
3036  bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3037  bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3038  assert((IsCuda || (IsOpenMPDevice && Inputs.size() == 2) ||
3039  Inputs.size() == 1) &&
3040  "Unable to handle multiple inputs.");
3041 
3042  const llvm::Triple *AuxTriple =
3043  IsCuda ? getToolChain().getAuxTriple() : nullptr;
3044 
3045  bool IsWindowsGNU = RawTriple.isWindowsGNUEnvironment();
3046  bool IsWindowsCygnus = RawTriple.isWindowsCygwinEnvironment();
3047  bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3048  bool IsIAMCU = RawTriple.isOSIAMCU();
3049 
3050  // Adjust IsWindowsXYZ for CUDA compilations. Even when compiling in device
3051  // mode (i.e., getToolchain().getTriple() is NVPTX, not Windows), we need to
3052  // pass Windows-specific flags to cc1.
3053  if (IsCuda) {
3054  IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3055  IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
3056  IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
3057  }
3058 
3059  // C++ is not supported for IAMCU.
3060  if (IsIAMCU && types::isCXX(Input.getType()))
3061  D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3062 
3063  // Invoke ourselves in -cc1 mode.
3064  //
3065  // FIXME: Implement custom jobs for internal actions.
3066  CmdArgs.push_back("-cc1");
3067 
3068  // Add the "effective" target triple.
3069  CmdArgs.push_back("-triple");
3070  CmdArgs.push_back(Args.MakeArgString(TripleStr));
3071 
3072  if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3073  DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3074  Args.ClaimAllArgs(options::OPT_MJ);
3075  }
3076 
3077  if (IsCuda) {
3078  // We have to pass the triple of the host if compiling for a CUDA device and
3079  // vice-versa.
3080  std::string NormalizedTriple;
3082  NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3083  ->getTriple()
3084  .normalize();
3085  else
3086  NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Cuda>()
3087  ->getTriple()
3088  .normalize();
3089 
3090  CmdArgs.push_back("-aux-triple");
3091  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3092  }
3093 
3094  if (IsOpenMPDevice) {
3095  // We have to pass the triple of the host if compiling for an OpenMP device.
3096  std::string NormalizedTriple =
3098  ->getTriple()
3099  .normalize();
3100  CmdArgs.push_back("-aux-triple");
3101  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3102  }
3103 
3104  if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3105  Triple.getArch() == llvm::Triple::thumb)) {
3106  unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3107  unsigned Version;
3108  Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3109  if (Version < 7)
3110  D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3111  << TripleStr;
3112  }
3113 
3114  // Push all default warning arguments that are specific to
3115  // the given target. These come before user provided warning options
3116  // are provided.
3117  getToolChain().addClangWarningOptions(CmdArgs);
3118 
3119  // Select the appropriate action.
3120  RewriteKind rewriteKind = RK_None;
3121 
3122  if (isa<AnalyzeJobAction>(JA)) {
3123  assert(JA.getType() == types::TY_Plist && "Invalid output type.");
3124  CmdArgs.push_back("-analyze");
3125  } else if (isa<MigrateJobAction>(JA)) {
3126  CmdArgs.push_back("-migrate");
3127  } else if (isa<PreprocessJobAction>(JA)) {
3128  if (Output.getType() == types::TY_Dependencies)
3129  CmdArgs.push_back("-Eonly");
3130  else {
3131  CmdArgs.push_back("-E");
3132  if (Args.hasArg(options::OPT_rewrite_objc) &&
3133  !Args.hasArg(options::OPT_g_Group))
3134  CmdArgs.push_back("-P");
3135  }
3136  } else if (isa<AssembleJobAction>(JA)) {
3137  CmdArgs.push_back("-emit-obj");
3138 
3139  CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3140 
3141  // Also ignore explicit -force_cpusubtype_ALL option.
3142  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3143  } else if (isa<PrecompileJobAction>(JA)) {
3144  // Use PCH if the user requested it.
3145  bool UsePCH = D.CCCUsePCH;
3146 
3147  if (JA.getType() == types::TY_Nothing)
3148  CmdArgs.push_back("-fsyntax-only");
3149  else if (JA.getType() == types::TY_ModuleFile)
3150  CmdArgs.push_back("-emit-module-interface");
3151  else if (UsePCH)
3152  CmdArgs.push_back("-emit-pch");
3153  else
3154  CmdArgs.push_back("-emit-pth");
3155  } else if (isa<VerifyPCHJobAction>(JA)) {
3156  CmdArgs.push_back("-verify-pch");
3157  } else {
3158  assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
3159  "Invalid action for clang tool.");
3160  if (JA.getType() == types::TY_Nothing) {
3161  CmdArgs.push_back("-fsyntax-only");
3162  } else if (JA.getType() == types::TY_LLVM_IR ||
3163  JA.getType() == types::TY_LTO_IR) {
3164  CmdArgs.push_back("-emit-llvm");
3165  } else if (JA.getType() == types::TY_LLVM_BC ||
3166  JA.getType() == types::TY_LTO_BC) {
3167  CmdArgs.push_back("-emit-llvm-bc");
3168  } else if (JA.getType() == types::TY_PP_Asm) {
3169  CmdArgs.push_back("-S");
3170  } else if (JA.getType() == types::TY_AST) {
3171  CmdArgs.push_back("-emit-pch");
3172  } else if (JA.getType() == types::TY_ModuleFile) {
3173  CmdArgs.push_back("-module-file-info");
3174  } else if (JA.getType() == types::TY_RewrittenObjC) {
3175  CmdArgs.push_back("-rewrite-objc");
3176  rewriteKind = RK_NonFragile;
3177  } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3178  CmdArgs.push_back("-rewrite-objc");
3179  rewriteKind = RK_Fragile;
3180  } else {
3181  assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
3182  }
3183 
3184  // Preserve use-list order by default when emitting bitcode, so that
3185  // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3186  // same result as running passes here. For LTO, we don't need to preserve
3187  // the use-list order, since serialization to bitcode is part of the flow.
3188  if (JA.getType() == types::TY_LLVM_BC)
3189  CmdArgs.push_back("-emit-llvm-uselists");
3190 
3191  if (D.isUsingLTO()) {
3192  Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3193 
3194  // The Darwin and PS4 linkers currently use the legacy LTO API, which
3195  // does not support LTO unit features (CFI, whole program vtable opt)
3196  // under ThinLTO.
3197  if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3198  D.getLTOMode() == LTOK_Full)
3199  CmdArgs.push_back("-flto-unit");
3200  }
3201  }
3202 
3203  if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3204  if (!types::isLLVMIR(Input.getType()))
3205  D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
3206  << "-x ir";
3207  Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3208  }
3209 
3210  // Embed-bitcode option.
3211  if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3212  (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3213  // Add flags implied by -fembed-bitcode.
3214  Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3215  // Disable all llvm IR level optimizations.
3216  CmdArgs.push_back("-disable-llvm-passes");
3217  }
3219  CmdArgs.push_back("-fembed-bitcode=marker");
3220 
3221  // We normally speed up the clang process a bit by skipping destructors at
3222  // exit, but when we're generating diagnostics we can rely on some of the
3223  // cleanup.
3224  if (!C.isForDiagnostics())
3225  CmdArgs.push_back("-disable-free");
3226 
3227 // Disable the verification pass in -asserts builds.
3228 #ifdef NDEBUG
3229  CmdArgs.push_back("-disable-llvm-verifier");
3230  // Discard LLVM value names in -asserts builds.
3231  CmdArgs.push_back("-discard-value-names");
3232 #endif
3233 
3234  // Set the main file name, so that debug info works even with
3235  // -save-temps.
3236  CmdArgs.push_back("-main-file-name");
3237  CmdArgs.push_back(getBaseInputName(Args, Input));
3238 
3239  // Some flags which affect the language (via preprocessor
3240  // defines).
3241  if (Args.hasArg(options::OPT_static))
3242  CmdArgs.push_back("-static-define");
3243 
3244  if (isa<AnalyzeJobAction>(JA))
3245  RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3246 
3247  CheckCodeGenerationOptions(D, Args);
3248 
3249  llvm::Reloc::Model RelocationModel;
3250  unsigned PICLevel;
3251  bool IsPIE;
3252  std::tie(RelocationModel, PICLevel, IsPIE) =
3253  ParsePICArgs(getToolChain(), Args);
3254 
3255  const char *RMName = RelocationModelName(RelocationModel);
3256 
3257  if ((RelocationModel == llvm::Reloc::ROPI ||
3258  RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3259  types::isCXX(Input.getType()) &&
3260  !Args.hasArg(options::OPT_fallow_unsupported))
3261  D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3262 
3263  if (RMName) {
3264  CmdArgs.push_back("-mrelocation-model");
3265  CmdArgs.push_back(RMName);
3266  }
3267  if (PICLevel > 0) {
3268  CmdArgs.push_back("-pic-level");
3269  CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3270  if (IsPIE)
3271  CmdArgs.push_back("-pic-is-pie");
3272  }
3273 
3274  if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3275  CmdArgs.push_back("-meabi");
3276  CmdArgs.push_back(A->getValue());
3277  }
3278 
3279  CmdArgs.push_back("-mthread-model");
3280  if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3281  if (!getToolChain().isThreadModelSupported(A->getValue()))
3282  D.Diag(diag::err_drv_invalid_thread_model_for_target)
3283  << A->getValue() << A->getAsString(Args);
3284  CmdArgs.push_back(A->getValue());
3285  }
3286  else
3287  CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel()));
3288 
3289  Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3290 
3291  if (!Args.hasFlag(options::OPT_fmerge_all_constants,
3292  options::OPT_fno_merge_all_constants))
3293  CmdArgs.push_back("-fno-merge-all-constants");
3294 
3295  // LLVM Code Generator Options.
3296 
3297  if (Args.hasArg(options::OPT_frewrite_map_file) ||
3298  Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3299  for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3300  options::OPT_frewrite_map_file_EQ)) {
3301  StringRef Map = A->getValue();
3302  if (!llvm::sys::fs::exists(Map)) {
3303  D.Diag(diag::err_drv_no_such_file) << Map;
3304  } else {
3305  CmdArgs.push_back("-frewrite-map-file");
3306  CmdArgs.push_back(A->getValue());
3307  A->claim();
3308  }
3309  }
3310  }
3311 
3312  if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3313  StringRef v = A->getValue();
3314  CmdArgs.push_back("-mllvm");
3315  CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3316  A->claim();
3317  }
3318 
3319  if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3320  true))
3321  CmdArgs.push_back("-fno-jump-tables");
3322 
3323  if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3324  options::OPT_fno_profile_sample_accurate, false))
3325  CmdArgs.push_back("-fprofile-sample-accurate");
3326 
3327  if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3328  options::OPT_fno_preserve_as_comments, true))
3329  CmdArgs.push_back("-fno-preserve-as-comments");
3330 
3331  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3332  CmdArgs.push_back("-mregparm");
3333  CmdArgs.push_back(A->getValue());
3334  }
3335 
3336  if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3337  options::OPT_freg_struct_return)) {
3338  if (getToolChain().getArch() != llvm::Triple::x86) {
3339  D.Diag(diag::err_drv_unsupported_opt_for_target)
3340  << A->getSpelling() << RawTriple.str();
3341  } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3342  CmdArgs.push_back("-fpcc-struct-return");
3343  } else {
3344  assert(A->getOption().matches(options::OPT_freg_struct_return));
3345  CmdArgs.push_back("-freg-struct-return");
3346  }
3347  }
3348 
3349  if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3350  CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3351 
3352  if (shouldUseFramePointer(Args, RawTriple))
3353  CmdArgs.push_back("-mdisable-fp-elim");
3354  if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3355  options::OPT_fno_zero_initialized_in_bss))
3356  CmdArgs.push_back("-mno-zero-initialized-in-bss");
3357 
3358  bool OFastEnabled = isOptimizationLevelFast(Args);
3359  // If -Ofast is the optimization level, then -fstrict-aliasing should be
3360  // enabled. This alias option is being used to simplify the hasFlag logic.
3361  OptSpecifier StrictAliasingAliasOption =
3362  OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3363  // We turn strict aliasing off by default if we're in CL mode, since MSVC
3364  // doesn't do any TBAA.
3365  bool TBAAOnByDefault = !D.IsCLMode();
3366  if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3367  options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3368  CmdArgs.push_back("-relaxed-aliasing");
3369  if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3370  options::OPT_fno_struct_path_tbaa))
3371  CmdArgs.push_back("-no-struct-path-tbaa");
3372  if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3373  false))
3374  CmdArgs.push_back("-fstrict-enums");
3375  if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3376  true))
3377  CmdArgs.push_back("-fno-strict-return");
3378  if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3379  options::OPT_fno_allow_editor_placeholders, false))
3380  CmdArgs.push_back("-fallow-editor-placeholders");
3381  if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3382  options::OPT_fno_strict_vtable_pointers,
3383  false))
3384  CmdArgs.push_back("-fstrict-vtable-pointers");
3385  if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3386  options::OPT_fno_optimize_sibling_calls))
3387  CmdArgs.push_back("-mdisable-tail-calls");
3388 
3389  Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
3390  options::OPT_fno_fine_grained_bitfield_accesses);
3391 
3392  // Handle segmented stacks.
3393  if (Args.hasArg(options::OPT_fsplit_stack))
3394  CmdArgs.push_back("-split-stacks");
3395 
3396  RenderFloatingPointOptions(getToolChain(), D, OFastEnabled, Args, CmdArgs);
3397 
3398  // Decide whether to use verbose asm. Verbose assembly is the default on
3399  // toolchains which have the integrated assembler on by default.
3400  bool IsIntegratedAssemblerDefault =
3401  getToolChain().IsIntegratedAssemblerDefault();
3402  if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
3403  IsIntegratedAssemblerDefault) ||
3404  Args.hasArg(options::OPT_dA))
3405  CmdArgs.push_back("-masm-verbose");
3406 
3407  if (!Args.hasFlag(options::OPT_fintegrated_as, options::OPT_fno_integrated_as,
3408  IsIntegratedAssemblerDefault))
3409  CmdArgs.push_back("-no-integrated-as");
3410 
3411  if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
3412  CmdArgs.push_back("-mdebug-pass");
3413  CmdArgs.push_back("Structure");
3414  }
3415  if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
3416  CmdArgs.push_back("-mdebug-pass");
3417  CmdArgs.push_back("Arguments");
3418  }
3419 
3420  // Enable -mconstructor-aliases except on darwin, where we have to work around
3421  // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
3422  // aliases aren't supported.
3423  if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
3424  CmdArgs.push_back("-mconstructor-aliases");
3425 
3426  // Darwin's kernel doesn't support guard variables; just die if we
3427  // try to use them.
3428  if (KernelOrKext && RawTriple.isOSDarwin())
3429  CmdArgs.push_back("-fforbid-guard-variables");
3430 
3431  if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
3432  false)) {
3433  CmdArgs.push_back("-mms-bitfields");
3434  }
3435 
3436  if (Args.hasFlag(options::OPT_mpie_copy_relocations,
3437  options::OPT_mno_pie_copy_relocations,
3438  false)) {
3439  CmdArgs.push_back("-mpie-copy-relocations");
3440  }
3441 
3442  if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
3443  CmdArgs.push_back("-fno-plt");
3444  }
3445 
3446  // -fhosted is default.
3447  // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
3448  // use Freestanding.
3449  bool Freestanding =
3450  Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3451  KernelOrKext;
3452  if (Freestanding)
3453  CmdArgs.push_back("-ffreestanding");
3454 
3455  // This is a coarse approximation of what llvm-gcc actually does, both
3456  // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
3457  // complicated ways.
3458  bool AsynchronousUnwindTables =
3459  Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
3460  options::OPT_fno_asynchronous_unwind_tables,
3461  (getToolChain().IsUnwindTablesDefault(Args) ||
3462  getToolChain().getSanitizerArgs().needsUnwindTables()) &&
3463  !Freestanding);
3464  if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
3465  AsynchronousUnwindTables))
3466  CmdArgs.push_back("-munwind-tables");
3467 
3468  getToolChain().addClangTargetOptions(Args, CmdArgs,
3470 
3471  if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
3472  CmdArgs.push_back("-mlimit-float-precision");
3473  CmdArgs.push_back(A->getValue());
3474  }
3475 
3476  // FIXME: Handle -mtune=.
3477  (void)Args.hasArg(options::OPT_mtune_EQ);
3478 
3479  if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
3480  CmdArgs.push_back("-mcode-model");
3481  CmdArgs.push_back(A->getValue());
3482  }
3483 
3484  // Add the target cpu
3485  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
3486  if (!CPU.empty()) {
3487  CmdArgs.push_back("-target-cpu");
3488  CmdArgs.push_back(Args.MakeArgString(CPU));
3489  }
3490 
3491  RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
3492 
3493  // These two are potentially updated by AddClangCLArgs.
3495  bool EmitCodeView = false;
3496 
3497  // Add clang-cl arguments.
3498  types::ID InputType = Input.getType();
3499  if (D.IsCLMode())
3500  AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
3501 
3502  const Arg *SplitDWARFArg = nullptr;
3503  RenderDebugOptions(getToolChain(), D, RawTriple, Args, EmitCodeView,
3504  IsWindowsMSVC, CmdArgs, DebugInfoKind, SplitDWARFArg);
3505 
3506  // Add the split debug info name to the command lines here so we
3507  // can propagate it to the backend.
3508  bool SplitDWARF = SplitDWARFArg && RawTriple.isOSLinux() &&
3509  (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
3510  isa<BackendJobAction>(JA));
3511  const char *SplitDWARFOut;
3512  if (SplitDWARF) {
3513  CmdArgs.push_back("-split-dwarf-file");
3514  SplitDWARFOut = SplitDebugName(Args, Input);
3515  CmdArgs.push_back(SplitDWARFOut);
3516  }
3517 
3518  // Pass the linker version in use.
3519  if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
3520  CmdArgs.push_back("-target-linker-version");
3521  CmdArgs.push_back(A->getValue());
3522  }
3523 
3524  if (!shouldUseLeafFramePointer(Args, RawTriple))
3525  CmdArgs.push_back("-momit-leaf-frame-pointer");
3526 
3527  // Explicitly error on some things we know we don't support and can't just
3528  // ignore.
3529  if (!Args.hasArg(options::OPT_fallow_unsupported)) {
3530  Arg *Unsupported;
3531  if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
3532  getToolChain().getArch() == llvm::Triple::x86) {
3533  if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
3534  (Unsupported = Args.getLastArg(options::OPT_mkernel)))
3535  D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
3536  << Unsupported->getOption().getName();
3537  }
3538  // The faltivec option has been superseded by the maltivec option.
3539  if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
3540  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3541  << Unsupported->getOption().getName()
3542  << "please use -maltivec and include altivec.h explicitly";
3543  if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
3544  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3545  << Unsupported->getOption().getName() << "please use -mno-altivec";
3546  }
3547 
3548  Args.AddAllArgs(CmdArgs, options::OPT_v);
3549  Args.AddLastArg(CmdArgs, options::OPT_H);
3550  if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
3551  CmdArgs.push_back("-header-include-file");
3552  CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
3553  : "-");
3554  }
3555  Args.AddLastArg(CmdArgs, options::OPT_P);
3556  Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
3557 
3558  if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
3559  CmdArgs.push_back("-diagnostic-log-file");
3560  CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
3561  : "-");
3562  }
3563 
3564  bool UseSeparateSections = isUseSeparateSections(Triple);
3565 
3566  if (Args.hasFlag(options::OPT_ffunction_sections,
3567  options::OPT_fno_function_sections, UseSeparateSections)) {
3568  CmdArgs.push_back("-ffunction-sections");
3569  }
3570 
3571  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
3572  UseSeparateSections)) {
3573  CmdArgs.push_back("-fdata-sections");
3574  }
3575 
3576  if (!Args.hasFlag(options::OPT_funique_section_names,
3577  options::OPT_fno_unique_section_names, true))
3578  CmdArgs.push_back("-fno-unique-section-names");
3579 
3580  if (auto *A = Args.getLastArg(
3581  options::OPT_finstrument_functions,
3582  options::OPT_finstrument_functions_after_inlining,
3583  options::OPT_finstrument_function_entry_bare))
3584  A->render(Args, CmdArgs);
3585 
3586  addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
3587 
3588  if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
3589  ABICompatArg->render(Args, CmdArgs);
3590 
3591  // Add runtime flag for PS4 when PGO or Coverage are enabled.
3592  if (RawTriple.isPS4CPU())
3593  PS4cpu::addProfileRTArgs(getToolChain(), Args, CmdArgs);
3594 
3595  // Pass options for controlling the default header search paths.
3596  if (Args.hasArg(options::OPT_nostdinc)) {
3597  CmdArgs.push_back("-nostdsysteminc");
3598  CmdArgs.push_back("-nobuiltininc");
3599  } else {
3600  if (Args.hasArg(options::OPT_nostdlibinc))
3601  CmdArgs.push_back("-nostdsysteminc");
3602  Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
3603  Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
3604  }
3605 
3606  // Pass the path to compiler resource files.
3607  CmdArgs.push_back("-resource-dir");
3608  CmdArgs.push_back(D.ResourceDir.c_str());
3609 
3610  Args.AddLastArg(CmdArgs, options::OPT_working_directory);
3611 
3612  RenderARCMigrateToolOptions(D, Args, CmdArgs);
3613 
3614  // Add preprocessing options like -I, -D, etc. if we are using the
3615  // preprocessor.
3616  //
3617  // FIXME: Support -fpreprocessed
3619  AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
3620 
3621  // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
3622  // that "The compiler can only warn and ignore the option if not recognized".
3623  // When building with ccache, it will pass -D options to clang even on
3624  // preprocessed inputs and configure concludes that -fPIC is not supported.
3625  Args.ClaimAllArgs(options::OPT_D);
3626 
3627  // Manually translate -O4 to -O3; let clang reject others.
3628  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3629  if (A->getOption().matches(options::OPT_O4)) {
3630  CmdArgs.push_back("-O3");
3631  D.Diag(diag::warn_O4_is_O3);
3632  } else {
3633  A->render(Args, CmdArgs);
3634  }
3635  }
3636 
3637  // Warn about ignored options to clang.
3638  for (const Arg *A :
3639  Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
3640  D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
3641  A->claim();
3642  }
3643 
3644  for (const Arg *A :
3645  Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
3646  D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
3647  A->claim();
3648  }
3649 
3650  claimNoWarnArgs(Args);
3651 
3652  Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
3653 
3654  Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
3655  if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
3656  CmdArgs.push_back("-pedantic");
3657  Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
3658  Args.AddLastArg(CmdArgs, options::OPT_w);
3659 
3660  // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
3661  // (-ansi is equivalent to -std=c89 or -std=c++98).
3662  //
3663  // If a std is supplied, only add -trigraphs if it follows the
3664  // option.
3665  bool ImplyVCPPCXXVer = false;
3666  if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
3667  if (Std->getOption().matches(options::OPT_ansi))
3668  if (types::isCXX(InputType))
3669  CmdArgs.push_back("-std=c++98");
3670  else
3671  CmdArgs.push_back("-std=c89");
3672  else
3673  Std->render(Args, CmdArgs);
3674 
3675  // If -f(no-)trigraphs appears after the language standard flag, honor it.
3676  if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
3677  options::OPT_ftrigraphs,
3678  options::OPT_fno_trigraphs))
3679  if (A != Std)
3680  A->render(Args, CmdArgs);
3681  } else {
3682  // Honor -std-default.
3683  //
3684  // FIXME: Clang doesn't correctly handle -std= when the input language
3685  // doesn't match. For the time being just ignore this for C++ inputs;
3686  // eventually we want to do all the standard defaulting here instead of
3687  // splitting it between the driver and clang -cc1.
3688  if (!types::isCXX(InputType))
3689  Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
3690  /*Joined=*/true);
3691  else if (IsWindowsMSVC)
3692  ImplyVCPPCXXVer = true;
3693 
3694  Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
3695  options::OPT_fno_trigraphs);
3696  }
3697 
3698  // GCC's behavior for -Wwrite-strings is a bit strange:
3699  // * In C, this "warning flag" changes the types of string literals from
3700  // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
3701  // for the discarded qualifier.
3702  // * In C++, this is just a normal warning flag.
3703  //
3704  // Implementing this warning correctly in C is hard, so we follow GCC's
3705  // behavior for now. FIXME: Directly diagnose uses of a string literal as
3706  // a non-const char* in C, rather than using this crude hack.
3707  if (!types::isCXX(InputType)) {
3708  // FIXME: This should behave just like a warning flag, and thus should also
3709  // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
3710  Arg *WriteStrings =
3711  Args.getLastArg(options::OPT_Wwrite_strings,
3712  options::OPT_Wno_write_strings, options::OPT_w);
3713  if (WriteStrings &&
3714  WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
3715  CmdArgs.push_back("-fconst-strings");
3716  }
3717 
3718  // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
3719  // during C++ compilation, which it is by default. GCC keeps this define even
3720  // in the presence of '-w', match this behavior bug-for-bug.
3721  if (types::isCXX(InputType) &&
3722  Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
3723  true)) {
3724  CmdArgs.push_back("-fdeprecated-macro");
3725  }
3726 
3727  // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
3728  if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
3729  if (Asm->getOption().matches(options::OPT_fasm))
3730  CmdArgs.push_back("-fgnu-keywords");
3731  else
3732  CmdArgs.push_back("-fno-gnu-keywords");
3733  }
3734 
3735  if (ShouldDisableDwarfDirectory(Args, getToolChain()))
3736  CmdArgs.push_back("-fno-dwarf-directory-asm");
3737 
3738  if (ShouldDisableAutolink(Args, getToolChain()))
3739  CmdArgs.push_back("-fno-autolink");
3740 
3741  // Add in -fdebug-compilation-dir if necessary.
3742  addDebugCompDirArg(Args, CmdArgs);
3743 
3744  for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
3745  StringRef Map = A->getValue();
3746  if (Map.find('=') == StringRef::npos)
3747  D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
3748  else
3749  CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
3750  A->claim();
3751  }
3752 
3753  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
3754  options::OPT_ftemplate_depth_EQ)) {
3755  CmdArgs.push_back("-ftemplate-depth");
3756  CmdArgs.push_back(A->getValue());
3757  }
3758 
3759  if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
3760  CmdArgs.push_back("-foperator-arrow-depth");
3761  CmdArgs.push_back(A->getValue());
3762  }
3763 
3764  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
3765  CmdArgs.push_back("-fconstexpr-depth");
3766  CmdArgs.push_back(A->getValue());
3767  }
3768 
3769  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
3770  CmdArgs.push_back("-fconstexpr-steps");
3771  CmdArgs.push_back(A->getValue());
3772  }
3773 
3774  if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
3775  CmdArgs.push_back("-fbracket-depth");
3776  CmdArgs.push_back(A->getValue());
3777  }
3778 
3779  if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
3780  options::OPT_Wlarge_by_value_copy_def)) {
3781  if (A->getNumValues()) {
3782  StringRef bytes = A->getValue();
3783  CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
3784  } else
3785  CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
3786  }
3787 
3788  if (Args.hasArg(options::OPT_relocatable_pch))
3789  CmdArgs.push_back("-relocatable-pch");
3790 
3791  if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
3792  CmdArgs.push_back("-fconstant-string-class");
3793  CmdArgs.push_back(A->getValue());
3794  }
3795 
3796  if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
3797  CmdArgs.push_back("-ftabstop");
3798  CmdArgs.push_back(A->getValue());
3799  }
3800 
3801  CmdArgs.push_back("-ferror-limit");
3802  if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
3803  CmdArgs.push_back(A->getValue());
3804  else
3805  CmdArgs.push_back("19");
3806 
3807  if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
3808  CmdArgs.push_back("-fmacro-backtrace-limit");
3809  CmdArgs.push_back(A->getValue());
3810  }
3811 
3812  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
3813  CmdArgs.push_back("-ftemplate-backtrace-limit");
3814  CmdArgs.push_back(A->getValue());
3815  }
3816 
3817  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
3818  CmdArgs.push_back("-fconstexpr-backtrace-limit");
3819  CmdArgs.push_back(A->getValue());
3820  }
3821 
3822  if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
3823  CmdArgs.push_back("-fspell-checking-limit");
3824  CmdArgs.push_back(A->getValue());
3825  }
3826 
3827  // Pass -fmessage-length=.
3828  CmdArgs.push_back("-fmessage-length");
3829  if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
3830  CmdArgs.push_back(A->getValue());
3831  } else {
3832  // If -fmessage-length=N was not specified, determine whether this is a
3833  // terminal and, if so, implicitly define -fmessage-length appropriately.
3834  unsigned N = llvm::sys::Process::StandardErrColumns();
3835  CmdArgs.push_back(Args.MakeArgString(Twine(N)));
3836  }
3837 
3838  // -fvisibility= and -fvisibility-ms-compat are of a piece.
3839  if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
3840  options::OPT_fvisibility_ms_compat)) {
3841  if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
3842  CmdArgs.push_back("-fvisibility");
3843  CmdArgs.push_back(A->getValue());
3844  } else {
3845  assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
3846  CmdArgs.push_back("-fvisibility");
3847  CmdArgs.push_back("hidden");
3848  CmdArgs.push_back("-ftype-visibility");
3849  CmdArgs.push_back("default");
3850  }
3851  }
3852 
3853  Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
3854 
3855  Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
3856 
3857  // Forward -f (flag) options which we can pass directly.
3858  Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
3859  Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
3860  Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
3861  // Emulated TLS is enabled by default on Android and OpenBSD, and can be enabled
3862  // manually with -femulated-tls.
3863  bool EmulatedTLSDefault = Triple.isAndroid() || Triple.isOSOpenBSD() ||
3864  Triple.isWindowsCygwinEnvironment();
3865  if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
3866  EmulatedTLSDefault))
3867  CmdArgs.push_back("-femulated-tls");
3868  // AltiVec-like language extensions aren't relevant for assembling.
3869  if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
3870  Args.AddLastArg(CmdArgs, options::OPT_fzvector);
3871 
3872  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
3873  Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
3874 
3875  // Forward flags for OpenMP. We don't do this if the current action is an
3876  // device offloading action other than OpenMP.
3877  if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
3878  options::OPT_fno_openmp, false) &&
3881  switch (D.getOpenMPRuntime(Args)) {
3882  case Driver::OMPRT_OMP:
3883  case Driver::OMPRT_IOMP5:
3884  // Clang can generate useful OpenMP code for these two runtime libraries.
3885  CmdArgs.push_back("-fopenmp");
3886 
3887  // If no option regarding the use of TLS in OpenMP codegeneration is
3888  // given, decide a default based on the target. Otherwise rely on the
3889  // options and pass the right information to the frontend.
3890  if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
3891  options::OPT_fnoopenmp_use_tls, /*Default=*/true))
3892  CmdArgs.push_back("-fnoopenmp-use-tls");
3893  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3894  break;
3895  default:
3896  // By default, if Clang doesn't know how to generate useful OpenMP code
3897  // for a specific runtime library, we just don't pass the '-fopenmp' flag
3898  // down to the actual compilation.
3899  // FIXME: It would be better to have a mode which *only* omits IR
3900  // generation based on the OpenMP support so that we get consistent
3901  // semantic analysis, etc.
3902  break;
3903  }
3904  } else {
3905  Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
3906  options::OPT_fno_openmp_simd);
3907  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
3908  }
3909 
3910  const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs();
3911  Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType);
3912 
3913  const XRayArgs &XRay = getToolChain().getXRayArgs();
3914  XRay.addArgs(getToolChain(), Args, CmdArgs, InputType);
3915 
3916  if (getToolChain().SupportsProfiling())
3917  Args.AddLastArg(CmdArgs, options::OPT_pg);
3918 
3919  if (getToolChain().SupportsProfiling())
3920  Args.AddLastArg(CmdArgs, options::OPT_mfentry);
3921 
3922  // -flax-vector-conversions is default.
3923  if (!Args.hasFlag(options::OPT_flax_vector_conversions,
3924  options::OPT_fno_lax_vector_conversions))
3925  CmdArgs.push_back("-fno-lax-vector-conversions");
3926 
3927  if (Args.getLastArg(options::OPT_fapple_kext) ||
3928  (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
3929  CmdArgs.push_back("-fapple-kext");
3930 
3931  Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
3932  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
3933  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
3934  Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
3935  Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
3936 
3937  if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
3938  CmdArgs.push_back("-ftrapv-handler");
3939  CmdArgs.push_back(A->getValue());
3940  }
3941 
3942  Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
3943 
3944  // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
3945  // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
3946  if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
3947  if (A->getOption().matches(options::OPT_fwrapv))
3948  CmdArgs.push_back("-fwrapv");
3949  } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
3950  options::OPT_fno_strict_overflow)) {
3951  if (A->getOption().matches(options::OPT_fno_strict_overflow))
3952  CmdArgs.push_back("-fwrapv");
3953  }
3954 
3955  if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
3956  options::OPT_fno_reroll_loops))
3957  if (A->getOption().matches(options::OPT_freroll_loops))
3958  CmdArgs.push_back("-freroll-loops");
3959 
3960  Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
3961  Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
3962  options::OPT_fno_unroll_loops);
3963 
3964  Args.AddLastArg(CmdArgs, options::OPT_pthread);
3965 
3966  RenderSSPOptions(getToolChain(), Args, CmdArgs, KernelOrKext);
3967 
3968  // Translate -mstackrealign
3969  if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
3970  false))
3971  CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
3972 
3973  if (Args.hasArg(options::OPT_mstack_alignment)) {
3974  StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
3975  CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
3976  }
3977 
3978  if (Args.hasArg(options::OPT_mstack_probe_size)) {
3979  StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
3980 
3981  if (!Size.empty())
3982  CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
3983  else
3984  CmdArgs.push_back("-mstack-probe-size=0");
3985  }
3986 
3987  if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
3988  options::OPT_mno_restrict_it)) {
3989  if (A->getOption().matches(options::OPT_mrestrict_it)) {
3990  CmdArgs.push_back("-backend-option");
3991  CmdArgs.push_back("-arm-restrict-it");
3992  } else {
3993  CmdArgs.push_back("-backend-option");
3994  CmdArgs.push_back("-arm-no-restrict-it");
3995  }
3996  } else if (Triple.isOSWindows() &&
3997  (Triple.getArch() == llvm::Triple::arm ||
3998  Triple.getArch() == llvm::Triple::thumb)) {
3999  // Windows on ARM expects restricted IT blocks
4000  CmdArgs.push_back("-backend-option");
4001  CmdArgs.push_back("-arm-restrict-it");
4002  }
4003 
4004  // Forward -cl options to -cc1
4005  RenderOpenCLOptions(Args, CmdArgs);
4006 
4007  // Forward -f options with positive and negative forms; we translate
4008  // these by hand.
4009  if (Arg *A = getLastProfileSampleUseArg(Args)) {
4010  StringRef fname = A->getValue();
4011  if (!llvm::sys::fs::exists(fname))
4012  D.Diag(diag::err_drv_no_such_file) << fname;
4013  else
4014  A->render(Args, CmdArgs);
4015  }
4016 
4017  RenderBuiltinOptions(getToolChain(), RawTriple, Args, CmdArgs);
4018 
4019  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4020  options::OPT_fno_assume_sane_operator_new))
4021  CmdArgs.push_back("-fno-assume-sane-operator-new");
4022 
4023  // -fblocks=0 is default.
4024  if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4025  getToolChain().IsBlocksDefault()) ||
4026  (Args.hasArg(options::OPT_fgnu_runtime) &&
4027  Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4028  !Args.hasArg(options::OPT_fno_blocks))) {
4029  CmdArgs.push_back("-fblocks");
4030 
4031  if (!Args.hasArg(options::OPT_fgnu_runtime) &&
4032  !getToolChain().hasBlocksRuntime())
4033  CmdArgs.push_back("-fblocks-runtime-optional");
4034  }
4035 
4036  // -fencode-extended-block-signature=1 is default.
4037  if (getToolChain().IsEncodeExtendedBlockSignatureDefault())
4038  CmdArgs.push_back("-fencode-extended-block-signature");
4039 
4040  if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4041  false) &&
4042  types::isCXX(InputType)) {
4043  CmdArgs.push_back("-fcoroutines-ts");
4044  }
4045 
4046  Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4047  options::OPT_fno_double_square_bracket_attributes);
4048 
4049  bool HaveModules = false;
4050  RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4051 
4052  // -faccess-control is default.
4053  if (Args.hasFlag(options::OPT_fno_access_control,
4054  options::OPT_faccess_control, false))
4055  CmdArgs.push_back("-fno-access-control");
4056 
4057  // -felide-constructors is the default.
4058  if (Args.hasFlag(options::OPT_fno_elide_constructors,
4059  options::OPT_felide_constructors, false))
4060  CmdArgs.push_back("-fno-elide-constructors");
4061 
4062  ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode();
4063 
4064  if (KernelOrKext || (types::isCXX(InputType) &&
4065  (RTTIMode == ToolChain::RM_DisabledExplicitly ||
4066  RTTIMode == ToolChain::RM_DisabledImplicitly)))
4067  CmdArgs.push_back("-fno-rtti");
4068 
4069  // -fshort-enums=0 is default for all architectures except Hexagon.
4070  if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4071  getToolChain().getArch() == llvm::Triple::hexagon))
4072  CmdArgs.push_back("-fshort-enums");
4073 
4074  RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4075 
4076  // -fuse-cxa-atexit is default.
4077  if (!Args.hasFlag(
4078  options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4079  !RawTriple.isOSWindows() &&
4080  RawTriple.getOS() != llvm::Triple::Solaris &&
4081  getToolChain().getArch() != llvm::Triple::hexagon &&
4082  getToolChain().getArch() != llvm::Triple::xcore &&
4083  ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4084  RawTriple.hasEnvironment())) ||
4085  KernelOrKext)
4086  CmdArgs.push_back("-fno-use-cxa-atexit");
4087 
4088  // -fms-extensions=0 is default.
4089  if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4090  IsWindowsMSVC))
4091  CmdArgs.push_back("-fms-extensions");
4092 
4093  // -fno-use-line-directives is default.
4094  if (Args.hasFlag(options::OPT_fuse_line_directives,
4095  options::OPT_fno_use_line_directives, false))
4096  CmdArgs.push_back("-fuse-line-directives");
4097 
4098  // -fms-compatibility=0 is default.
4099  if (Args.hasFlag(options::OPT_fms_compatibility,
4100  options::OPT_fno_ms_compatibility,
4101  (IsWindowsMSVC &&
4102  Args.hasFlag(options::OPT_fms_extensions,
4103  options::OPT_fno_ms_extensions, true))))
4104  CmdArgs.push_back("-fms-compatibility");
4105 
4106  VersionTuple MSVT = getToolChain().computeMSVCVersion(&D, Args);
4107  if (!MSVT.empty())
4108  CmdArgs.push_back(
4109  Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4110 
4111  bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4112  if (ImplyVCPPCXXVer) {
4113  StringRef LanguageStandard;
4114  if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4115  LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4116  .Case("c++14", "-std=c++14")
4117  .Case("c++17", "-std=c++17")
4118  .Case("c++latest", "-std=c++2a")
4119  .Default("");
4120  if (LanguageStandard.empty())
4121  D.Diag(clang::diag::warn_drv_unused_argument)
4122  << StdArg->getAsString(Args);
4123  }
4124 
4125  if (LanguageStandard.empty()) {
4126  if (IsMSVC2015Compatible)
4127  LanguageStandard = "-std=c++14";
4128  else
4129  LanguageStandard = "-std=c++11";
4130  }
4131 
4132  CmdArgs.push_back(LanguageStandard.data());
4133  }
4134 
4135  // -fno-borland-extensions is default.
4136  if (Args.hasFlag(options::OPT_fborland_extensions,
4137  options::OPT_fno_borland_extensions, false))
4138  CmdArgs.push_back("-fborland-extensions");
4139 
4140  // -fno-declspec is default, except for PS4.
4141  if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4142  RawTriple.isPS4()))
4143  CmdArgs.push_back("-fdeclspec");
4144  else if (Args.hasArg(options::OPT_fno_declspec))
4145  CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4146 
4147  // -fthreadsafe-static is default, except for MSVC compatibility versions less
4148  // than 19.
4149  if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4150  options::OPT_fno_threadsafe_statics,
4151  !IsWindowsMSVC || IsMSVC2015Compatible))
4152  CmdArgs.push_back("-fno-threadsafe-statics");
4153 
4154  // -fno-delayed-template-parsing is default, except when targetting MSVC.
4155  // Many old Windows SDK versions require this to parse.
4156  // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4157  // compiler. We should be able to disable this by default at some point.
4158  if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4159  options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4160  CmdArgs.push_back("-fdelayed-template-parsing");
4161 
4162  // -fgnu-keywords default varies depending on language; only pass if
4163  // specified.
4164  if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
4165  options::OPT_fno_gnu_keywords))
4166  A->render(Args, CmdArgs);
4167 
4168  if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4169  false))
4170  CmdArgs.push_back("-fgnu89-inline");
4171 
4172  if (Args.hasArg(options::OPT_fno_inline))
4173  CmdArgs.push_back("-fno-inline");
4174 
4175  if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
4176  options::OPT_finline_hint_functions,
4177  options::OPT_fno_inline_functions))
4178  InlineArg->render(Args, CmdArgs);
4179 
4180  Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4181  options::OPT_fno_experimental_new_pass_manager);
4182 
4183  ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4184  RenderObjCOptions(getToolChain(), D, RawTriple, Args, Runtime,
4185  rewriteKind != RK_None, Input, CmdArgs);
4186 
4187  if (Args.hasFlag(options::OPT_fapplication_extension,
4188  options::OPT_fno_application_extension, false))
4189  CmdArgs.push_back("-fapplication-extension");
4190 
4191  // Handle GCC-style exception args.
4192  if (!C.getDriver().IsCLMode())
4193  addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, Runtime,
4194  CmdArgs);
4195 
4196  // Handle exception personalities
4197  Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4198  options::OPT_fseh_exceptions,
4199  options::OPT_fdwarf_exceptions);
4200  if (A) {
4201  const Option &Opt = A->getOption();
4202  if (Opt.matches(options::OPT_fsjlj_exceptions))
4203  CmdArgs.push_back("-fsjlj-exceptions");
4204  if (Opt.matches(options::OPT_fseh_exceptions))
4205  CmdArgs.push_back("-fseh-exceptions");
4206  if (Opt.matches(options::OPT_fdwarf_exceptions))
4207  CmdArgs.push_back("-fdwarf-exceptions");
4208  } else {
4209  switch (getToolChain().GetExceptionModel(Args)) {
4210  default:
4211  break;
4212  case llvm::ExceptionHandling::DwarfCFI:
4213  CmdArgs.push_back("-fdwarf-exceptions");
4214  break;
4215  case llvm::ExceptionHandling::SjLj:
4216  CmdArgs.push_back("-fsjlj-exceptions");
4217  break;
4218  case llvm::ExceptionHandling::WinEH:
4219  CmdArgs.push_back("-fseh-exceptions");
4220  break;
4221  }
4222  }
4223 
4224  // C++ "sane" operator new.
4225  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4226  options::OPT_fno_assume_sane_operator_new))
4227  CmdArgs.push_back("-fno-assume-sane-operator-new");
4228 
4229  // -frelaxed-template-template-args is off by default, as it is a severe
4230  // breaking change until a corresponding change to template partial ordering
4231  // is provided.
4232  if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4233  options::OPT_fno_relaxed_template_template_args, false))
4234  CmdArgs.push_back("-frelaxed-template-template-args");
4235 
4236  // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4237  // most platforms.
4238  if (Args.hasFlag(options::OPT_fsized_deallocation,
4239  options::OPT_fno_sized_deallocation, false))
4240  CmdArgs.push_back("-fsized-deallocation");
4241 
4242  // -faligned-allocation is on by default in C++17 onwards and otherwise off
4243  // by default.
4244  if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4245  options::OPT_fno_aligned_allocation,
4246  options::OPT_faligned_new_EQ)) {
4247  if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4248  CmdArgs.push_back("-fno-aligned-allocation");
4249  else
4250  CmdArgs.push_back("-faligned-allocation");
4251  }
4252 
4253  // The default new alignment can be specified using a dedicated option or via
4254  // a GCC-compatible option that also turns on aligned allocation.
4255  if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4256  options::OPT_faligned_new_EQ))
4257  CmdArgs.push_back(
4258  Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4259 
4260  // -fconstant-cfstrings is default, and may be subject to argument translation
4261  // on Darwin.
4262  if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4263  options::OPT_fno_constant_cfstrings) ||
4264  !Args.hasFlag(options::OPT_mconstant_cfstrings,
4265  options::OPT_mno_constant_cfstrings))
4266  CmdArgs.push_back("-fno-constant-cfstrings");
4267 
4268  // -fno-pascal-strings is default, only pass non-default.
4269  if (Args.hasFlag(options::OPT_fpascal_strings,
4270  options::OPT_fno_pascal_strings, false))
4271  CmdArgs.push_back("-fpascal-strings");
4272 
4273  // Honor -fpack-struct= and -fpack-struct, if given. Note that
4274  // -fno-pack-struct doesn't apply to -fpack-struct=.
4275  if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4276  std::string PackStructStr = "-fpack-struct=";
4277  PackStructStr += A->getValue();
4278  CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4279  } else if (Args.hasFlag(options::OPT_fpack_struct,
4280  options::OPT_fno_pack_struct, false)) {
4281  CmdArgs.push_back("-fpack-struct=1");
4282  }
4283 
4284  // Handle -fmax-type-align=N and -fno-type-align
4285  bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4286  if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4287  if (!SkipMaxTypeAlign) {
4288  std::string MaxTypeAlignStr = "-fmax-type-align=";
4289  MaxTypeAlignStr += A->getValue();
4290  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4291  }
4292  } else if (RawTriple.isOSDarwin()) {
4293  if (!SkipMaxTypeAlign) {
4294  std::string MaxTypeAlignStr = "-fmax-type-align=16";
4295  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4296  }
4297  }
4298 
4299  // -fcommon is the default unless compiling kernel code or the target says so
4300  bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4301  if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4302  !NoCommonDefault))
4303  CmdArgs.push_back("-fno-common");
4304 
4305  // -fsigned-bitfields is default, and clang doesn't yet support
4306  // -funsigned-bitfields.
4307  if (!Args.hasFlag(options::OPT_fsigned_bitfields,
4308  options::OPT_funsigned_bitfields))
4309  D.Diag(diag::warn_drv_clang_unsupported)
4310  << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
4311 
4312  // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
4313  if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
4314  D.Diag(diag::err_drv_clang_unsupported)
4315  << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
4316 
4317  // -finput_charset=UTF-8 is default. Reject others
4318  if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
4319  StringRef value = inputCharset->getValue();
4320  if (!value.equals_lower("utf-8"))
4321  D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4322  << value;
4323  }
4324 
4325  // -fexec_charset=UTF-8 is default. Reject others
4326  if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
4327  StringRef value = execCharset->getValue();
4328  if (!value.equals_lower("utf-8"))
4329  D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
4330  << value;
4331  }
4332 
4333  RenderDiagnosticsOptions(D, Args, CmdArgs);
4334 
4335  // -fno-asm-blocks is default.
4336  if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4337  false))
4338  CmdArgs.push_back("-fasm-blocks");
4339 
4340  // -fgnu-inline-asm is default.
4341  if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4342  options::OPT_fno_gnu_inline_asm, true))
4343  CmdArgs.push_back("-fno-gnu-inline-asm");
4344 
4345  // Enable vectorization per default according to the optimization level
4346  // selected. For optimization levels that want vectorization we use the alias
4347  // option to simplify the hasFlag logic.
4348  bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4349  OptSpecifier VectorizeAliasOption =
4350  EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4351  if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4352  options::OPT_fno_vectorize, EnableVec))
4353  CmdArgs.push_back("-vectorize-loops");
4354 
4355  // -fslp-vectorize is enabled based on the optimization level selected.
4356  bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4357  OptSpecifier SLPVectAliasOption =
4358  EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4359  if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4360  options::OPT_fno_slp_vectorize, EnableSLPVec))
4361  CmdArgs.push_back("-vectorize-slp");
4362 
4363  ParseMPreferVectorWidth(D, Args, CmdArgs);
4364 
4365  if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4366  A->render(Args, CmdArgs);
4367 
4368  if (Arg *A = Args.getLastArg(
4369  options::OPT_fsanitize_undefined_strip_path_components_EQ))
4370  A->render(Args, CmdArgs);
4371 
4372  // -fdollars-in-identifiers default varies depending on platform and
4373  // language; only pass if specified.
4374  if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4375  options::OPT_fno_dollars_in_identifiers)) {
4376  if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4377  CmdArgs.push_back("-fdollars-in-identifiers");
4378  else
4379  CmdArgs.push_back("-fno-dollars-in-identifiers");
4380  }
4381 
4382  // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4383  // practical purposes.
4384  if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4385  options::OPT_fno_unit_at_a_time)) {
4386  if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4387  D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4388  }
4389 
4390  if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4391  options::OPT_fno_apple_pragma_pack, false))
4392  CmdArgs.push_back("-fapple-pragma-pack");
4393 
4394  if (Args.hasFlag(options::OPT_fsave_optimization_record,
4395  options::OPT_foptimization_record_file_EQ,
4396  options::OPT_fno_save_optimization_record, false)) {
4397  CmdArgs.push_back("-opt-record-file");
4398 
4399  const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4400  if (A) {
4401  CmdArgs.push_back(A->getValue());
4402  } else {
4403  SmallString<128> F;
4404 
4405  if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
4406  if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
4407  F = FinalOutput->getValue();
4408  }
4409 
4410  if (F.empty()) {
4411  // Use the input filename.
4412  F = llvm::sys::path::stem(Input.getBaseInput());
4413 
4414  // If we're compiling for an offload architecture (i.e. a CUDA device),
4415  // we need to make the file name for the device compilation different
4416  // from the host compilation.
4419  llvm::sys::path::replace_extension(F, "");
4421  Triple.normalize());
4422  F += "-";
4423  F += JA.getOffloadingArch();
4424  }
4425  }
4426 
4427  llvm::sys::path::replace_extension(F, "opt.yaml");
4428  CmdArgs.push_back(Args.MakeArgString(F));
4429  }
4430  }
4431 
4432  bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
4433  options::OPT_fno_rewrite_imports, false);
4434  if (RewriteImports)
4435  CmdArgs.push_back("-frewrite-imports");
4436 
4437  // Enable rewrite includes if the user's asked for it or if we're generating
4438  // diagnostics.
4439  // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
4440  // nice to enable this when doing a crashdump for modules as well.
4441  if (Args.hasFlag(options::OPT_frewrite_includes,
4442  options::OPT_fno_rewrite_includes, false) ||
4443  (C.isForDiagnostics() && (RewriteImports || !HaveModules)))
4444  CmdArgs.push_back("-frewrite-includes");
4445 
4446  // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
4447  if (Arg *A = Args.getLastArg(options::OPT_traditional,
4448  options::OPT_traditional_cpp)) {
4449  if (isa<PreprocessJobAction>(JA))
4450  CmdArgs.push_back("-traditional-cpp");
4451  else
4452  D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
4453  }
4454 
4455  Args.AddLastArg(CmdArgs, options::OPT_dM);
4456  Args.AddLastArg(CmdArgs, options::OPT_dD);
4457 
4458  // Handle serialized diagnostics.
4459  if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
4460  CmdArgs.push_back("-serialize-diagnostic-file");
4461  CmdArgs.push_back(Args.MakeArgString(A->getValue()));
4462  }
4463 
4464  if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
4465  CmdArgs.push_back("-fretain-comments-from-system-headers");
4466 
4467  // Forward -fcomment-block-commands to -cc1.
4468  Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
4469  // Forward -fparse-all-comments to -cc1.
4470  Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
4471 
4472  // Turn -fplugin=name.so into -load name.so
4473  for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
4474  CmdArgs.push_back("-load");
4475  CmdArgs.push_back(A->getValue());
4476  A->claim();
4477  }
4478 
4479  // Setup statistics file output.
4480  if (const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ)) {
4481  StringRef SaveStats = A->getValue();
4482 
4483  SmallString<128> StatsFile;
4484  bool DoSaveStats = false;
4485  if (SaveStats == "obj") {
4486  if (Output.isFilename()) {
4487  StatsFile.assign(Output.getFilename());
4488  llvm::sys::path::remove_filename(StatsFile);
4489  }
4490  DoSaveStats = true;
4491  } else if (SaveStats == "cwd") {
4492  DoSaveStats = true;
4493  } else {
4494  D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
4495  }
4496 
4497  if (DoSaveStats) {
4498  StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
4499  llvm::sys::path::append(StatsFile, BaseName);
4500  llvm::sys::path::replace_extension(StatsFile, "stats");
4501  CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") +
4502  StatsFile));
4503  }
4504  }
4505 
4506  // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
4507  // parser.
4508  // -finclude-default-header flag is for preprocessor,
4509  // do not pass it to other cc1 commands when save-temps is enabled
4510  if (C.getDriver().isSaveTempsEnabled() &&
4511  !isa<PreprocessJobAction>(JA)) {
4512  for (auto Arg : Args.filtered(options::OPT_Xclang)) {
4513  Arg->claim();
4514  if (StringRef(Arg->getValue()) != "-finclude-default-header")
4515  CmdArgs.push_back(Arg->getValue());
4516  }
4517  }
4518  else {
4519  Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
4520  }
4521  for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
4522  A->claim();
4523 
4524  // We translate this by hand to the -cc1 argument, since nightly test uses
4525  // it and developers have been trained to spell it with -mllvm. Both
4526  // spellings are now deprecated and should be removed.
4527  if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
4528  CmdArgs.push_back("-disable-llvm-optzns");
4529  } else {
4530  A->render(Args, CmdArgs);
4531  }
4532  }
4533 
4534  // With -save-temps, we want to save the unoptimized bitcode output from the
4535  // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
4536  // by the frontend.
4537  // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
4538  // has slightly different breakdown between stages.
4539  // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
4540  // pristine IR generated by the frontend. Ideally, a new compile action should
4541  // be added so both IR can be captured.
4542  if (C.getDriver().isSaveTempsEnabled() &&
4543  !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
4544  isa<CompileJobAction>(JA))
4545  CmdArgs.push_back("-disable-llvm-passes");
4546 
4547  if (Output.getType() == types::TY_Dependencies) {
4548  // Handled with other dependency code.
4549  } else if (Output.isFilename()) {
4550  CmdArgs.push_back("-o");
4551  CmdArgs.push_back(Output.getFilename());
4552  } else {
4553  assert(Output.isNothing() && "Invalid output.");
4554  }
4555 
4556  addDashXForInput(Args, Input, CmdArgs);
4557 
4558  if (Input.isFilename())
4559  CmdArgs.push_back(Input.getFilename());
4560  else
4561  Input.getInputArg().renderAsInput(Args, CmdArgs);
4562 
4563  Args.AddAllArgs(CmdArgs, options::OPT_undef);
4564 
4565  const char *Exec = D.getClangProgramPath();
4566 
4567  // Optionally embed the -cc1 level arguments into the debug info, for build
4568  // analysis.
4569  // Also record command line arguments into the debug info if
4570  // -grecord-gcc-switches options is set on.
4571  // By default, -gno-record-gcc-switches is set on and no recording.
4572  if (getToolChain().UseDwarfDebugFlags() ||
4573  Args.hasFlag(options::OPT_grecord_gcc_switches,
4574  options::OPT_gno_record_gcc_switches, false)) {
4575  ArgStringList OriginalArgs;
4576  for (const auto &Arg : Args)
4577  Arg->render(Args, OriginalArgs);
4578 
4579  SmallString<256> Flags;
4580  Flags += Exec;
4581  for (const char *OriginalArg : OriginalArgs) {
4582  SmallString<128> EscapedArg;
4583  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
4584  Flags += " ";
4585  Flags += EscapedArg;
4586  }
4587  CmdArgs.push_back("-dwarf-debug-flags");
4588  CmdArgs.push_back(Args.MakeArgString(Flags));
4589  }
4590 
4591  // Host-side cuda compilation receives device-side outputs as Inputs[1...].
4592  // Include them with -fcuda-include-gpubinary.
4593  if (IsCuda && Inputs.size() > 1)
4594  for (auto I = std::next(Inputs.begin()), E = Inputs.end(); I != E; ++I) {
4595  CmdArgs.push_back("-fcuda-include-gpubinary");
4596  CmdArgs.push_back(I->getFilename());
4597  }
4598 
4599  // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
4600  // to specify the result of the compile phase on the host, so the meaningful
4601  // device declarations can be identified. Also, -fopenmp-is-device is passed
4602  // along to tell the frontend that it is generating code for a device, so that
4603  // only the relevant declarations are emitted.
4604  if (IsOpenMPDevice) {
4605  CmdArgs.push_back("-fopenmp-is-device");
4606  if (Inputs.size() == 2) {
4607  CmdArgs.push_back("-fopenmp-host-ir-file-path");
4608  CmdArgs.push_back(Args.MakeArgString(Inputs.back().getFilename()));
4609  }
4610  }
4611 
4612  // For all the host OpenMP offloading compile jobs we need to pass the targets
4613  // information using -fopenmp-targets= option.
4614  if (isa<CompileJobAction>(JA) && JA.isHostOffloading(Action::OFK_OpenMP)) {
4615  SmallString<128> TargetInfo("-fopenmp-targets=");
4616 
4617  Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
4618  assert(Tgts && Tgts->getNumValues() &&
4619  "OpenMP offloading has to have targets specified.");
4620  for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
4621  if (i)
4622  TargetInfo += ',';
4623  // We need to get the string from the triple because it may be not exactly
4624  // the same as the one we get directly from the arguments.
4625  llvm::Triple T(Tgts->getValue(i));
4626  TargetInfo += T.getTriple();
4627  }
4628  CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
4629  }
4630 
4631  bool WholeProgramVTables =
4632  Args.hasFlag(options::OPT_fwhole_program_vtables,
4633  options::OPT_fno_whole_program_vtables, false);
4634  if (WholeProgramVTables) {
4635  if (!D.isUsingLTO())
4636  D.Diag(diag::err_drv_argument_only_allowed_with)
4637  << "-fwhole-program-vtables"
4638  << "-flto";
4639  CmdArgs.push_back("-fwhole-program-vtables");
4640  }
4641 
4642  if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
4643  options::OPT_fno_experimental_isel)) {
4644  CmdArgs.push_back("-mllvm");
4645  if (A->getOption().matches(options::OPT_fexperimental_isel)) {
4646  CmdArgs.push_back("-global-isel=1");
4647 
4648  // GISel is on by default on AArch64 -O0, so don't bother adding
4649  // the fallback remarks for it. Other combinations will add a warning of
4650  // some kind.
4651  bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
4652  bool IsOptLevelSupported = false;
4653 
4654  Arg *A = Args.getLastArg(options::OPT_O_Group);
4655  if (Triple.getArch() == llvm::Triple::aarch64) {
4656  if (!A || A->getOption().matches(options::OPT_O0))
4657  IsOptLevelSupported = true;
4658  }
4659  if (!IsArchSupported || !IsOptLevelSupported) {
4660  CmdArgs.push_back("-mllvm");
4661  CmdArgs.push_back("-global-isel-abort=2");
4662 
4663  if (!IsArchSupported)
4664  D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
4665  else
4666  D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
4667  }
4668  } else {
4669  CmdArgs.push_back("-global-isel=0");
4670  }
4671  }
4672 
4673  // Finally add the compile command to the compilation.
4674  if (Args.hasArg(options::OPT__SLASH_fallback) &&
4675  Output.getType() == types::TY_Object &&
4676  (InputType == types::TY_C || InputType == types::TY_CXX)) {
4677  auto CLCommand =
4678  getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
4679  C.addCommand(llvm::make_unique<FallbackCommand>(
4680  JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
4681  } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
4682  isa<PrecompileJobAction>(JA)) {
4683  // In /fallback builds, run the main compilation even if the pch generation
4684  // fails, so that the main compilation's fallback to cl.exe runs.
4685  C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
4686  CmdArgs, Inputs));
4687  } else {
4688  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
4689  }
4690 
4691  // Handle the debug info splitting at object creation time if we're
4692  // creating an object.
4693  // TODO: Currently only works on linux with newer objcopy.
4694  if (SplitDWARF && Output.getType() == types::TY_Object)
4695  SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, SplitDWARFOut);
4696 
4697  if (Arg *A = Args.getLastArg(options::OPT_pg))
4698  if (Args.hasArg(options::OPT_fomit_frame_pointer))
4699  D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
4700  << A->getAsString(Args);
4701 
4702  // Claim some arguments which clang supports automatically.
4703 
4704  // -fpch-preprocess is used with gcc to add a special marker in the output to
4705  // include the PCH file. Clang's PTH solution is completely transparent, so we
4706  // do not need to deal with it at all.
4707  Args.ClaimAllArgs(options::OPT_fpch_preprocess);
4708 
4709  // Claim some arguments which clang doesn't support, but we don't
4710  // care to warn the user about.
4711  Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
4712  Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
4713 
4714  // Disable warnings for clang -E -emit-llvm foo.c
4715  Args.ClaimAllArgs(options::OPT_emit_llvm);
4716 }
4717 
4719  // CAUTION! The first constructor argument ("clang") is not arbitrary,
4720  // as it is for other tools. Some operations on a Tool actually test
4721  // whether that tool is Clang based on the Tool's Name as a string.
4722  : Tool("clang", "clang frontend", TC, RF_Full) {}
4723 
4725 
4726 /// Add options related to the Objective-C runtime/ABI.
4727 ///
4728 /// Returns true if the runtime is non-fragile.
4729 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
4730  ArgStringList &cmdArgs,
4731  RewriteKind rewriteKind) const {
4732  // Look for the controlling runtime option.
4733  Arg *runtimeArg =
4734  args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
4735  options::OPT_fobjc_runtime_EQ);
4736 
4737  // Just forward -fobjc-runtime= to the frontend. This supercedes
4738  // options about fragility.
4739  if (runtimeArg &&
4740  runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
4741  ObjCRuntime runtime;
4742  StringRef value = runtimeArg->getValue();
4743  if (runtime.tryParse(value)) {
4744  getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
4745  << value;
4746  }
4747 
4748  runtimeArg->render(args, cmdArgs);
4749  return runtime;
4750  }
4751 
4752  // Otherwise, we'll need the ABI "version". Version numbers are
4753  // slightly confusing for historical reasons:
4754  // 1 - Traditional "fragile" ABI
4755  // 2 - Non-fragile ABI, version 1
4756  // 3 - Non-fragile ABI, version 2
4757  unsigned objcABIVersion = 1;
4758  // If -fobjc-abi-version= is present, use that to set the version.
4759  if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
4760  StringRef value = abiArg->getValue();
4761  if (value == "1")
4762  objcABIVersion = 1;
4763  else if (value == "2")
4764  objcABIVersion = 2;
4765  else if (value == "3")
4766  objcABIVersion = 3;
4767  else
4768  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
4769  } else {
4770  // Otherwise, determine if we are using the non-fragile ABI.
4771  bool nonFragileABIIsDefault =
4772  (rewriteKind == RK_NonFragile ||
4773  (rewriteKind == RK_None &&
4775  if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
4776  options::OPT_fno_objc_nonfragile_abi,
4777  nonFragileABIIsDefault)) {
4778 // Determine the non-fragile ABI version to use.
4779 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
4780  unsigned nonFragileABIVersion = 1;
4781 #else
4782  unsigned nonFragileABIVersion = 2;
4783 #endif
4784 
4785  if (Arg *abiArg =
4786  args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
4787  StringRef value = abiArg->getValue();
4788  if (value == "1")
4789  nonFragileABIVersion = 1;
4790  else if (value == "2")
4791  nonFragileABIVersion = 2;
4792  else
4793  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4794  << value;
4795  }
4796 
4797  objcABIVersion = 1 + nonFragileABIVersion;
4798  } else {
4799  objcABIVersion = 1;
4800  }
4801  }
4802 
4803  // We don't actually care about the ABI version other than whether
4804  // it's non-fragile.
4805  bool isNonFragile = objcABIVersion != 1;
4806 
4807  // If we have no runtime argument, ask the toolchain for its default runtime.
4808  // However, the rewriter only really supports the Mac runtime, so assume that.
4809  ObjCRuntime runtime;
4810  if (!runtimeArg) {
4811  switch (rewriteKind) {
4812  case RK_None:
4813  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4814  break;
4815  case RK_Fragile:
4817  break;
4818  case RK_NonFragile:
4820  break;
4821  }
4822 
4823  // -fnext-runtime
4824  } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
4825  // On Darwin, make this use the default behavior for the toolchain.
4826  if (getToolChain().getTriple().isOSDarwin()) {
4827  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4828 
4829  // Otherwise, build for a generic macosx port.
4830  } else {
4832  }
4833 
4834  // -fgnu-runtime
4835  } else {
4836  assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
4837  // Legacy behaviour is to target the gnustep runtime if we are in
4838  // non-fragile mode or the GCC runtime in fragile mode.
4839  if (isNonFragile)
4840  runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(1, 6));
4841  else
4843  }
4844 
4845  cmdArgs.push_back(
4846  args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
4847  return runtime;
4848 }
4849 
4850 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
4851  bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
4852  I += HaveDash;
4853  return !HaveDash;
4854 }
4855 
4856 namespace {
4857 struct EHFlags {
4858  bool Synch = false;
4859  bool Asynch = false;
4860  bool NoUnwindC = false;
4861 };
4862 } // end anonymous namespace
4863 
4864 /// /EH controls whether to run destructor cleanups when exceptions are
4865 /// thrown. There are three modifiers:
4866 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
4867 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
4868 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
4869 /// - c: Assume that extern "C" functions are implicitly nounwind.
4870 /// The default is /EHs-c-, meaning cleanups are disabled.
4871 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
4872  EHFlags EH;
4873 
4874  std::vector<std::string> EHArgs =
4875  Args.getAllArgValues(options::OPT__SLASH_EH);
4876  for (auto EHVal : EHArgs) {
4877  for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
4878  switch (EHVal[I]) {
4879  case 'a':
4880  EH.Asynch = maybeConsumeDash(EHVal, I);
4881  if (EH.Asynch)
4882  EH.Synch = false;
4883  continue;
4884  case 'c':
4885  EH.NoUnwindC = maybeConsumeDash(EHVal, I);
4886  continue;
4887  case 's':
4888  EH.Synch = maybeConsumeDash(EHVal, I);
4889  if (EH.Synch)
4890  EH.Asynch = false;
4891  continue;
4892  default:
4893  break;
4894  }
4895  D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
4896  break;
4897  }
4898  }
4899  // The /GX, /GX- flags are only processed if there are not /EH flags.
4900  // The default is that /GX is not specified.
4901  if (EHArgs.empty() &&
4902  Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
4903  /*default=*/false)) {
4904  EH.Synch = true;
4905  EH.NoUnwindC = true;
4906  }
4907 
4908  return EH;
4909 }
4910 
4911 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
4912  ArgStringList &CmdArgs,
4914  bool *EmitCodeView) const {
4915  unsigned RTOptionID = options::OPT__SLASH_MT;
4916 
4917  if (Args.hasArg(options::OPT__SLASH_LDd))
4918  // The /LDd option implies /MTd. The dependent lib part can be overridden,
4919  // but defining _DEBUG is sticky.
4920  RTOptionID = options::OPT__SLASH_MTd;
4921 
4922  if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
4923  RTOptionID = A->getOption().getID();
4924 
4925  StringRef FlagForCRT;
4926  switch (RTOptionID) {
4927  case options::OPT__SLASH_MD:
4928  if (Args.hasArg(options::OPT__SLASH_LDd))
4929  CmdArgs.push_back("-D_DEBUG");
4930  CmdArgs.push_back("-D_MT");
4931  CmdArgs.push_back("-D_DLL");
4932  FlagForCRT = "--dependent-lib=msvcrt";
4933  break;
4934  case options::OPT__SLASH_MDd:
4935  CmdArgs.push_back("-D_DEBUG");
4936  CmdArgs.push_back("-D_MT");
4937  CmdArgs.push_back("-D_DLL");
4938  FlagForCRT = "--dependent-lib=msvcrtd";
4939  break;
4940  case options::OPT__SLASH_MT:
4941  if (Args.hasArg(options::OPT__SLASH_LDd))
4942  CmdArgs.push_back("-D_DEBUG");
4943  CmdArgs.push_back("-D_MT");
4944  CmdArgs.push_back("-flto-visibility-public-std");
4945  FlagForCRT = "--dependent-lib=libcmt";
4946  break;
4947  case options::OPT__SLASH_MTd:
4948  CmdArgs.push_back("-D_DEBUG");
4949  CmdArgs.push_back("-D_MT");
4950  CmdArgs.push_back("-flto-visibility-public-std");
4951  FlagForCRT = "--dependent-lib=libcmtd";
4952  break;
4953  default:
4954  llvm_unreachable("Unexpected option ID.");
4955  }
4956 
4957  if (Args.hasArg(options::OPT__SLASH_Zl)) {
4958  CmdArgs.push_back("-D_VC_NODEFAULTLIB");
4959  } else {
4960  CmdArgs.push_back(FlagForCRT.data());
4961 
4962  // This provides POSIX compatibility (maps 'open' to '_open'), which most
4963  // users want. The /Za flag to cl.exe turns this off, but it's not
4964  // implemented in clang.
4965  CmdArgs.push_back("--dependent-lib=oldnames");
4966  }
4967 
4968  // Both /showIncludes and /E (and /EP) write to stdout. Allowing both
4969  // would produce interleaved output, so ignore /showIncludes in such cases.
4970  if ((!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_EP)) ||
4971  (Args.hasArg(options::OPT__SLASH_P) &&
4972  Args.hasArg(options::OPT__SLASH_EP) && !Args.hasArg(options::OPT_E)))
4973  if (Arg *A = Args.getLastArg(options::OPT_show_includes))
4974  A->render(Args, CmdArgs);
4975 
4976  // This controls whether or not we emit RTTI data for polymorphic types.
4977  if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
4978  /*default=*/false))
4979  CmdArgs.push_back("-fno-rtti-data");
4980 
4981  // This controls whether or not we emit stack-protector instrumentation.
4982  // In MSVC, Buffer Security Check (/GS) is on by default.
4983  if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
4984  /*default=*/true)) {
4985  CmdArgs.push_back("-stack-protector");
4986  CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
4987  }
4988 
4989  // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
4990  if (Arg *DebugInfoArg =
4991  Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
4992  options::OPT_gline_tables_only)) {
4993  *EmitCodeView = true;
4994  if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
4995  *DebugInfoKind = codegenoptions::LimitedDebugInfo;
4996  else
4997  *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
4998  CmdArgs.push_back("-gcodeview");
4999  } else {
5000  *EmitCodeView = false;
5001  }
5002 
5003  const Driver &D = getToolChain().getDriver();
5004  EHFlags EH = parseClangCLEHFlags(D, Args);
5005  if (EH.Synch || EH.Asynch) {
5006  if (types::isCXX(InputType))
5007  CmdArgs.push_back("-fcxx-exceptions");
5008  CmdArgs.push_back("-fexceptions");
5009  }
5010  if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5011  CmdArgs.push_back("-fexternc-nounwind");
5012 
5013  // /EP should expand to -E -P.
5014  if (Args.hasArg(options::OPT__SLASH_EP)) {
5015  CmdArgs.push_back("-E");
5016  CmdArgs.push_back("-P");
5017  }
5018 
5019  unsigned VolatileOptionID;
5020  if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5021  getToolChain().getArch() == llvm::Triple::x86)
5022  VolatileOptionID = options::OPT__SLASH_volatile_ms;
5023  else
5024  VolatileOptionID = options::OPT__SLASH_volatile_iso;
5025 
5026  if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5027  VolatileOptionID = A->getOption().getID();
5028 
5029  if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5030  CmdArgs.push_back("-fms-volatile");
5031 
5032  Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5033  Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5034  if (MostGeneralArg && BestCaseArg)
5035  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5036  << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5037 
5038  if (MostGeneralArg) {
5039  Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5040  Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5041  Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5042 
5043  Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5044  Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5045  if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5046  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5047  << FirstConflict->getAsString(Args)
5048  << SecondConflict->getAsString(Args);
5049 
5050  if (SingleArg)
5051  CmdArgs.push_back("-fms-memptr-rep=single");
5052  else if (MultipleArg)
5053  CmdArgs.push_back("-fms-memptr-rep=multiple");
5054  else
5055  CmdArgs.push_back("-fms-memptr-rep=virtual");
5056  }
5057 
5058  // Parse the default calling convention options.
5059  if (Arg *CCArg =
5060  Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5061  options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5062  options::OPT__SLASH_Gregcall)) {
5063  unsigned DCCOptId = CCArg->getOption().getID();
5064  const char *DCCFlag = nullptr;
5065  bool ArchSupported = true;
5066  llvm::Triple::ArchType Arch = getToolChain().getArch();
5067  switch (DCCOptId) {
5068  case options::OPT__SLASH_Gd:
5069  DCCFlag = "-fdefault-calling-conv=cdecl";
5070  break;
5071  case options::OPT__SLASH_Gr:
5072  ArchSupported = Arch == llvm::Triple::x86;
5073  DCCFlag = "-fdefault-calling-conv=fastcall";
5074  break;
5075  case options::OPT__SLASH_Gz:
5076  ArchSupported = Arch == llvm::Triple::x86;
5077  DCCFlag = "-fdefault-calling-conv=stdcall";
5078  break;
5079  case options::OPT__SLASH_Gv:
5080  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5081  DCCFlag = "-fdefault-calling-conv=vectorcall";
5082  break;
5083  case options::OPT__SLASH_Gregcall:
5084  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5085  DCCFlag = "-fdefault-calling-conv=regcall";
5086  break;
5087  }
5088 
5089  // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5090  if (ArchSupported && DCCFlag)
5091  CmdArgs.push_back(DCCFlag);
5092  }
5093 
5094  if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
5095  A->render(Args, CmdArgs);
5096 
5097  if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5098  CmdArgs.push_back("-fdiagnostics-format");
5099  if (Args.hasArg(options::OPT__SLASH_fallback))
5100  CmdArgs.push_back("msvc-fallback");
5101  else
5102  CmdArgs.push_back("msvc");
5103  }
5104 }
5105 
5106 visualstudio::Compiler *Clang::getCLFallback() const {
5107  if (!CLFallback)
5108  CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5109  return CLFallback.get();
5110 }
5111 
5112 
5113 const char *Clang::getBaseInputName(const ArgList &Args,
5114  const InputInfo &Input) {
5115  return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5116 }
5117 
5118 const char *Clang::getBaseInputStem(const ArgList &Args,
5119  const InputInfoList &Inputs) {
5120  const char *Str = getBaseInputName(Args, Inputs[0]);
5121 
5122  if (const char *End = strrchr(Str, '.'))
5123  return Args.MakeArgString(std::string(Str, End));
5124 
5125  return Str;
5126 }
5127 
5128 const char *Clang::getDependencyFileName(const ArgList &Args,
5129  const InputInfoList &Inputs) {
5130  // FIXME: Think about this more.
5131  std::string Res;
5132 
5133  if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5134  std::string Str(OutputOpt->getValue());
5135  Res = Str.substr(0, Str.rfind('.'));
5136  } else {
5137  Res = getBaseInputStem(Args, Inputs);
5138  }
5139  return Args.MakeArgString(Res + ".d");
5140 }
5141 
5142 // Begin ClangAs
5143 
5144 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5145  ArgStringList &CmdArgs) const {
5146  StringRef CPUName;
5147  StringRef ABIName;
5148  const llvm::Triple &Triple = getToolChain().getTriple();
5149  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5150 
5151  CmdArgs.push_back("-target-abi");
5152  CmdArgs.push_back(ABIName.data());
5153 }
5154 
5155 void ClangAs::AddX86TargetArgs(const ArgList &Args,
5156  ArgStringList &CmdArgs) const {
5157  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5158  StringRef Value = A->getValue();
5159  if (Value == "intel" || Value == "att") {
5160  CmdArgs.push_back("-mllvm");
5161  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5162  } else {
5163  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
5164  << A->getOption().getName() << Value;
5165  }
5166  }
5167 }
5168 
5170  const InputInfo &Output, const InputInfoList &Inputs,
5171  const ArgList &Args,
5172  const char *LinkingOutput) const {
5173  ArgStringList CmdArgs;
5174 
5175  assert(Inputs.size() == 1 && "Unexpected number of inputs.");
5176  const InputInfo &Input = Inputs[0];
5177 
5178  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
5179  const std::string &TripleStr = Triple.getTriple();
5180  const auto &D = getToolChain().getDriver();
5181 
5182  // Don't warn about "clang -w -c foo.s"
5183  Args.ClaimAllArgs(options::OPT_w);
5184  // and "clang -emit-llvm -c foo.s"
5185  Args.ClaimAllArgs(options::OPT_emit_llvm);
5186 
5187  claimNoWarnArgs(Args);
5188 
5189  // Invoke ourselves in -cc1as mode.
5190  //
5191  // FIXME: Implement custom jobs for internal actions.
5192  CmdArgs.push_back("-cc1as");
5193 
5194  // Add the "effective" target triple.
5195  CmdArgs.push_back("-triple");
5196  CmdArgs.push_back(Args.MakeArgString(TripleStr));
5197 
5198  // Set the output mode, we currently only expect to be used as a real
5199  // assembler.
5200  CmdArgs.push_back("-filetype");
5201  CmdArgs.push_back("obj");
5202 
5203  // Set the main file name, so that debug info works even with
5204  // -save-temps or preprocessed assembly.
5205  CmdArgs.push_back("-main-file-name");
5206  CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
5207 
5208  // Add the target cpu
5209  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
5210  if (!CPU.empty()) {
5211  CmdArgs.push_back("-target-cpu");
5212  CmdArgs.push_back(Args.MakeArgString(CPU));
5213  }
5214 
5215  // Add the target features
5216  getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
5217 
5218  // Ignore explicit -force_cpusubtype_ALL option.
5219  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
5220 
5221  // Pass along any -I options so we get proper .include search paths.
5222  Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
5223 
5224  // Determine the original source input.
5225  const Action *SourceAction = &JA;
5226  while (SourceAction->getKind() != Action::InputClass) {
5227  assert(!SourceAction->getInputs().empty() && "unexpected root action!");
5228  SourceAction = SourceAction->getInputs()[0];
5229  }
5230 
5231  // Forward -g and handle debug info related flags, assuming we are dealing
5232  // with an actual assembly file.
5233  bool WantDebug = false;
5234  unsigned DwarfVersion = 0;
5235  Args.ClaimAllArgs(options::OPT_g_Group);
5236  if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
5237  WantDebug = !A->getOption().matches(options::OPT_g0) &&
5238  !A->getOption().matches(options::OPT_ggdb0);
5239  if (WantDebug)
5240  DwarfVersion = DwarfVersionNum(A->getSpelling());
5241  }
5242  if (DwarfVersion == 0)
5243  DwarfVersion = getToolChain().GetDefaultDwarfVersion();
5244 
5246 
5247  if (SourceAction->getType() == types::TY_Asm ||
5248  SourceAction->getType() == types::TY_PP_Asm) {
5249  // You might think that it would be ok to set DebugInfoKind outside of
5250  // the guard for source type, however there is a test which asserts
5251  // that some assembler invocation receives no -debug-info-kind,
5252  // and it's not clear whether that test is just overly restrictive.
5253  DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
5255  // Add the -fdebug-compilation-dir flag if needed.
5256  addDebugCompDirArg(Args, CmdArgs);
5257 
5258  // Set the AT_producer to the clang version when using the integrated
5259  // assembler on assembly source files.
5260  CmdArgs.push_back("-dwarf-debug-producer");
5261  CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
5262 
5263  // And pass along -I options
5264  Args.AddAllArgs(CmdArgs, options::OPT_I);
5265  }
5266  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
5267  llvm::DebuggerKind::Default);
5268  RenderDebugInfoCompressionArgs(Args, CmdArgs, D);
5269 
5270 
5271  // Handle -fPIC et al -- the relocation-model affects the assembler
5272  // for some targets.
5273  llvm::Reloc::Model RelocationModel;
5274  unsigned PICLevel;
5275  bool IsPIE;
5276  std::tie(RelocationModel, PICLevel, IsPIE) =
5277  ParsePICArgs(getToolChain(), Args);
5278 
5279  const char *RMName = RelocationModelName(RelocationModel);
5280  if (RMName) {
5281  CmdArgs.push_back("-mrelocation-model");
5282  CmdArgs.push_back(RMName);
5283  }
5284 
5285  // Optionally embed the -cc1as level arguments into the debug info, for build
5286  // analysis.
5287  if (getToolChain().UseDwarfDebugFlags()) {
5288  ArgStringList OriginalArgs;
5289  for (const auto &Arg : Args)
5290  Arg->render(Args, OriginalArgs);
5291 
5292  SmallString<256> Flags;
5293  const char *Exec = getToolChain().getDriver().getClangProgramPath();
5294  Flags += Exec;
5295  for (const char *OriginalArg : OriginalArgs) {
5296  SmallString<128> EscapedArg;
5297  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5298  Flags += " ";
5299  Flags += EscapedArg;
5300  }
5301  CmdArgs.push_back("-dwarf-debug-flags");
5302  CmdArgs.push_back(Args.MakeArgString(Flags));
5303  }
5304 
5305  // FIXME: Add -static support, once we have it.
5306 
5307  // Add target specific flags.
5308  switch (getToolChain().getArch()) {
5309  default:
5310  break;
5311 
5312  case llvm::Triple::mips:
5313  case llvm::Triple::mipsel:
5314  case llvm::Triple::mips64:
5315  case llvm::Triple::mips64el:
5316  AddMIPSTargetArgs(Args, CmdArgs);
5317  break;
5318 
5319  case llvm::Triple::x86:
5320  case llvm::Triple::x86_64:
5321  AddX86TargetArgs(Args, CmdArgs);
5322  break;
5323 
5324  case llvm::Triple::arm:
5325  case llvm::Triple::armeb:
5326  case llvm::Triple::thumb:
5327  case llvm::Triple::thumbeb:
5328  // This isn't in AddARMTargetArgs because we want to do this for assembly
5329  // only, not C/C++.
5330  if (Args.hasFlag(options::OPT_mdefault_build_attributes,
5331  options::OPT_mno_default_build_attributes, true)) {
5332  CmdArgs.push_back("-mllvm");
5333  CmdArgs.push_back("-arm-add-build-attributes");
5334  }
5335  break;
5336  }
5337 
5338  // Consume all the warning flags. Usually this would be handled more
5339  // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
5340  // doesn't handle that so rather than warning about unused flags that are
5341  // actually used, we'll lie by omission instead.
5342  // FIXME: Stop lying and consume only the appropriate driver flags
5343  Args.ClaimAllArgs(options::OPT_W_Group);
5344 
5345  CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
5346  getToolChain().getDriver());
5347 
5348  Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
5349 
5350  assert(Output.isFilename() && "Unexpected lipo output.");
5351  CmdArgs.push_back("-o");
5352  CmdArgs.push_back(Output.getFilename());
5353 
5354  assert(Input.isFilename() && "Invalid input.");
5355  CmdArgs.push_back(Input.getFilename());
5356 
5357  const char *Exec = getToolChain().getDriver().getClangProgramPath();
5358  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5359 
5360  // Handle the debug info splitting at object creation time if we're
5361  // creating an object.
5362  // TODO: Currently only works on linux with newer objcopy.
5363  if (Args.hasArg(options::OPT_gsplit_dwarf) &&
5364  getToolChain().getTriple().isOSLinux())
5365  SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
5366  SplitDebugName(Args, Input));
5367 }
5368 
5369 // Begin OffloadBundler
5370 
5372  const InputInfo &Output,
5373  const InputInfoList &Inputs,
5374  const llvm::opt::ArgList &TCArgs,
5375  const char *LinkingOutput) const {
5376  // The version with only one output is expected to refer to a bundling job.
5377  assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
5378 
5379  // The bundling command looks like this:
5380  // clang-offload-bundler -type=bc
5381  // -targets=host-triple,openmp-triple1,openmp-triple2
5382  // -outputs=input_file
5383  // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5384 
5385  ArgStringList CmdArgs;
5386 
5387  // Get the type.
5388  CmdArgs.push_back(TCArgs.MakeArgString(
5389  Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
5390 
5391  assert(JA.getInputs().size() == Inputs.size() &&
5392  "Not have inputs for all dependence actions??");
5393 
5394  // Get the targets.
5395  SmallString<128> Triples;
5396  Triples += "-targets=";
5397  for (unsigned I = 0; I < Inputs.size(); ++I) {
5398  if (I)
5399  Triples += ',';
5400 
5401  // Find ToolChain for this input.
5403  const ToolChain *CurTC = &getToolChain();
5404  const Action *CurDep = JA.getInputs()[I];
5405 
5406  if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
5407  CurTC = nullptr;
5408  OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
5409  assert(CurTC == nullptr && "Expected one dependence!");
5410  CurKind = A->getOffloadingDeviceKind();
5411  CurTC = TC;
5412  });
5413  }
5414  Triples += Action::GetOffloadKindName(CurKind);
5415  Triples += '-';
5416  Triples += CurTC->getTriple().normalize();
5417  }
5418  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5419 
5420  // Get bundled file command.
5421  CmdArgs.push_back(
5422  TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
5423 
5424  // Get unbundled files command.
5425  SmallString<128> UB;
5426  UB += "-inputs=";
5427  for (unsigned I = 0; I < Inputs.size(); ++I) {
5428  if (I)
5429  UB += ',';
5430 
5431  // Find ToolChain for this input.
5432  const ToolChain *CurTC = &getToolChain();
5433  if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
5434  CurTC = nullptr;
5435  OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
5436  assert(CurTC == nullptr && "Expected one dependence!");
5437  CurTC = TC;
5438  });
5439  }
5440  UB += CurTC->getInputFilename(Inputs[I]);
5441  }
5442  CmdArgs.push_back(TCArgs.MakeArgString(UB));
5443 
5444  // All the inputs are encoded as commands.
5445  C.addCommand(llvm::make_unique<Command>(
5446  JA, *this,
5447  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5448  CmdArgs, None));
5449 }
5450 
5452  Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
5453  const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
5454  const char *LinkingOutput) const {
5455  // The version with multiple outputs is expected to refer to a unbundling job.
5456  auto &UA = cast<OffloadUnbundlingJobAction>(JA);
5457 
5458  // The unbundling command looks like this:
5459  // clang-offload-bundler -type=bc
5460  // -targets=host-triple,openmp-triple1,openmp-triple2
5461  // -inputs=input_file
5462  // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5463  // -unbundle
5464 
5465  ArgStringList CmdArgs;
5466 
5467  assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
5468  InputInfo Input = Inputs.front();
5469 
5470  // Get the type.
5471  CmdArgs.push_back(TCArgs.MakeArgString(
5472  Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
5473 
5474  // Get the targets.
5475  SmallString<128> Triples;
5476  Triples += "-targets=";
5477  auto DepInfo = UA.getDependentActionsInfo();
5478  for (unsigned I = 0; I < DepInfo.size(); ++I) {
5479  if (I)
5480  Triples += ',';
5481 
5482  auto &Dep = DepInfo[I];
5483  Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
5484  Triples += '-';
5485  Triples += Dep.DependentToolChain->getTriple().normalize();
5486  }
5487 
5488  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5489 
5490  // Get bundled file command.
5491  CmdArgs.push_back(
5492  TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
5493 
5494  // Get unbundled files command.
5495  SmallString<128> UB;
5496  UB += "-outputs=";
5497  for (unsigned I = 0; I < Outputs.size(); ++I) {
5498  if (I)
5499  UB += ',';
5500  UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
5501  }
5502  CmdArgs.push_back(TCArgs.MakeArgString(UB));
5503  CmdArgs.push_back("-unbundle");
5504 
5505  // All the inputs are encoded as commands.
5506  C.addCommand(llvm::make_unique<Command>(
5507  JA, *this,
5508  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5509  CmdArgs, None));
5510 }
StringRef getSysRoot() const
Returns the sysroot path.
static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T, ArgStringList &CmdArgs)
Definition: Clang.cpp:2620
static const char * getBaseInputName(const llvm::opt::ArgList &Args, const InputInfo &Input)
Definition: Clang.cpp:5113
void handleTargetFeaturesGroup(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier Group)
static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple, const ArgList &Args, ArgStringList &CmdArgs, bool ForAS)
Definition: Clang.cpp:303
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:5451
static bool useFramePointerForTargetByDefault(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:518
Represents a version number in the form major[.minor[.subminor[.build]]].
Definition: VersionTuple.h:26
OpenMPRuntimeKind getOpenMPRuntime(const llvm::opt::ArgList &Args) const
Compute the desired OpenMP runtime from the flags provided.
Definition: Driver.cpp:492
static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC)
Definition: Clang.cpp:473
std::string getClangFullVersion()
Retrieves a string representing the complete clang version, which includes the clang version number...
Definition: Version.cpp:118
virtual ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const
getDefaultObjCRuntime - Return the default Objective-C runtime for this platform. ...
Definition: ToolChain.cpp:455
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 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:232
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:402
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:368
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:1828
StringRef P
FloatABI getSparcFloatABI(const Driver &D, const llvm::opt::ArgList &Args)
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:507
Defines types useful for describing an Objective-C runtime.
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:703
input_range inputs()
Definition: Action.h:141
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:121
void getSystemZTargetFeatures(const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
void addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, types::ID InputType) const
bool isHostOffloading(OffloadKind OKind) const
Check if this action have any offload kinds.
Definition: Action.h:187
static void CollectArgsForIntegratedAssembler(Compilation &C, const ArgList &Args, ArgStringList &CmdArgs, const Driver &D)
Definition: Clang.cpp:1848
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:510
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:110
static void QuoteTarget(StringRef Target, SmallVectorImpl< char > &Res)
Definition: Clang.cpp:92
static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args)
Definition: Clang.cpp:51
&#39;gcc&#39; is the Objective-C runtime shipped with GCC, implementing a fragile Objective-C ABI ...
Definition: ObjCRuntime.h:50
static bool shouldUseFramePointer(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:570
static bool UseRelaxAll(Compilation &C, const ArgList &Args)
Check if -relax-all should be passed to the internal assembler.
Definition: Clang.cpp:843
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
static StringRef bytes(const std::vector< T, Allocator > &v)
Definition: ASTWriter.cpp:119
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
&#39;macosx-fragile&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the fragil...
Definition: ObjCRuntime.h:37
const char * getFilename() const
Definition: InputInfo.h:84
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:608
bool embedBitcodeMarkerOnly() const
Definition: Driver.h:332
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
virtual unsigned GetDefaultStackProtectorLevel(bool KernelOrKext) const
GetDefaultStackProtectorLevel - Get the default stack protector level for this tool chain (0=off...
Definition: ToolChain.h:326
static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D, bool OFastEnabled, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2040
bool isOffloading(OffloadKind OKind) const
Definition: Action.h:193
std::string GetClPchPath(Compilation &C, StringRef BaseName) const
Return the pathname of the pch file in clang-cl mode.
Definition: Driver.cpp:4042
Action - Represent an abstract compilation step to perform.
Definition: Action.h:45
static const char * RelocationModelName(llvm::Reloc::Model Model)
Definition: Clang.cpp:941
bool isNonFragile() const
Does this runtime follow the set of implied behaviors for a "non-fragile" ABI?
Definition: ObjCRuntime.h:80
bool isNeXTFamily() const
Is this runtime basically of the NeXT family of runtimes?
Definition: ObjCRuntime.h:133
static void addPGOAndCoverageFlags(Compilation &C, const Driver &D, const InputInfo &Output, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:702
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:640
types::ID getType() const
Definition: Action.h:132
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:190
bool isOptimizationLevelFast(const llvm::opt::ArgList &Args)
The LLVM OpenMP runtime.
Definition: Driver.h:96
OffloadKind getOffloadingDeviceKind() const
Definition: Action.h:182
static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, bool KernelOrKext)
Definition: Clang.cpp:2279
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:59
const llvm::opt::Arg * getRTTIArg() const
Definition: ToolChain.h:215
types::ID getType() const
Definition: InputInfo.h:78
void addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, types::ID InputType) const
Definition: XRayArgs.cpp:94
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:5371
void getAMDGPUTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
Definition: AMDGPU.cpp:39
void AddX86TargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:5155
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
static void RenderDebugOptions(const ToolChain &TC, const Driver &D, const llvm::Triple &T, const ArgList &Args, bool EmitCodeView, bool IsWindowsMSVC, ArgStringList &CmdArgs, codegenoptions::DebugInfoKind &DebugInfoKind, const Arg *&SplitDWARFArg)
Definition: Clang.cpp:2846
static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2352
StringRef Filename
Definition: Format.cpp:1345
const ToolChain & getDefaultToolChain() const
Definition: Compilation.h:119
virtual bool useRelaxRelocations() const
Check whether to enable x86 relax relocations by default.
Definition: ToolChain.cpp:101
Exposes information about the current target.
Definition: TargetInfo.h:54
virtual bool useIntegratedAs() const
Check if the toolchain should use the integrated assembler.
Definition: ToolChain.cpp:95
static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2424
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:39
const DiagnosticsEngine & getDiags() const
Definition: Driver.h:299
bool isForDiagnostics() const
Return true if we&#39;re compiling for diagnostics.
Definition: Compilation.h:279
static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs, codegenoptions::DebugInfoKind DebugInfoKind, unsigned DwarfVersion, llvm::DebuggerKind DebuggerTuning)
Definition: Clang.cpp:875
Defines the clang::LangOptions interface.
ActionClass getKind() const
Definition: Action.h:131
SourceLocation End
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:298
&#39;macosx&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the non-fragile AB...
Definition: ObjCRuntime.h:32
const FunctionProtoType * T
std::string getAsString() const
Definition: ObjCRuntime.cpp:19
static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs)
The -mprefer-vector-width option accepts either a positive integer or the string "none".
Definition: Clang.cpp:279
const llvm::Triple & getEffectiveTriple() const
Get the toolchain&#39;s effective clang triple.
Definition: ToolChain.h:197
static unsigned DwarfVersionNum(StringRef ArgValue)
Definition: Clang.cpp:866
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
virtual bool IsObjCNonFragileABIDefault() const
IsObjCNonFragileABIDefault - Does this tool chain set -fobjc-nonfragile-abi by default.
Definition: ToolChain.h:315
static StringRef GetOffloadKindName(OffloadKind Kind)
Return a string containing a offload kind name.
Definition: Action.cpp:137
bool IsCLMode() const
Whether the driver should follow cl.exe like behavior.
Definition: Driver.h:183
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input)
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
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:189
static const char * getDependencyFileName(const llvm::opt::ArgList &Args, const InputInfoList &Inputs)
Definition: Clang.cpp:5128
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 isObjCAutoRefCount(const llvm::opt::ArgList &Args)
&#39;gnustep&#39; 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:63
const_offload_toolchains_range getOffloadToolChains() const
Definition: Compilation.h:134
static bool isSignedCharDefault(const llvm::Triple &Triple)
Definition: Clang.cpp:1262
virtual bool IsMathErrnoDefault() const
IsMathErrnoDefault - Does this tool chain use -fmath-errno by default.
Definition: ToolChain.h:307
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:183
bool empty() const
Determine whether this version information is empty (e.g., all version components are zero)...
Definition: VersionTuple.h:69
virtual bool UseObjCMixedDispatch() const
UseObjCMixedDispatchDefault - When using non-legacy dispatch, should the mixed dispatch method be use...
Definition: ToolChain.h:319
static void RenderModulesOptions(Compilation &C, const Driver &D, const ArgList &Args, const InputInfo &Input, const InputInfo &Output, ArgStringList &CmdArgs, bool &HaveModules)
Definition: Clang.cpp:2461
virtual std::string getInputFilename(const InputInfo &Input) const
Some toolchains need to modify the file name, for example to replace the extension for object files w...
Definition: ToolChain.cpp:230
void getAArch64TargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
bool embedBitcodeInObject() const
Definition: Driver.h:331
static bool isNoCommonDefault(const llvm::Triple &Triple)
Definition: Clang.cpp:1291
static void EscapeSpacesAndBackslashes(const char *Arg, SmallVectorImpl< char > &Res)
Definition: Clang.cpp:75
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:170
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:150
Limit generated debug info to reduce size (-fno-standalone-debug).
mips::FloatABI getMipsFloatABI(const Driver &D, const llvm::opt::ArgList &Args)
const Driver & getDriver() const
Definition: ToolChain.h:167
Kind getKind() const
Definition: ObjCRuntime.h:75
The legacy name for the LLVM OpenMP runtime from when it was the Intel OpenMP runtime.
Definition: Driver.h:106
void getMIPSTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
bool isSaveTempsEnabled() const
Definition: Driver.h:327
llvm::opt::Arg * getLastProfileSampleUseArg(const llvm::opt::ArgList &Args)
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:670
&#39;#include ""&#39; paths, added by &#39;gcc -iquote&#39;.
const char * getShortName() const
Definition: Tool.h:82
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:3017
Dataflow Directional Tag Classes.
const char * CCPrintHeadersFilename
The file to log CC_PRINT_HEADERS output to, if enabled.
Definition: Driver.h:164
static void RenderObjCOptions(const ToolChain &TC, const Driver &D, const llvm::Triple &T, const ArgList &Args, ObjCRuntime &Runtime, bool InferCovariantReturns, const InputInfo &Input, ArgStringList &CmdArgs)
Definition: Clang.cpp:2652
void AddMIPSTargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:5144
void getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
virtual void CheckObjCARC() const
Complain if this tool chain doesn&#39;t support Objective-C ARC.
Definition: ToolChain.h:381
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:25
virtual llvm::DebuggerKind getDefaultDebuggerTuning() const
Definition: ToolChain.h:398
Emit location information but do not generate debug info in the output.
unsigned getMajor() const
Retrieve the major version number.
Definition: VersionTuple.h:74
std::string SysRoot
sysroot, if present
Definition: Driver.h:149
void getHexagonTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
DiagnosticOptions & getDiagnosticOptions() const
Retrieve the diagnostic options.
Definition: Diagnostic.h:417
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
static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2731
virtual unsigned GetDefaultDwarfVersion() const
Definition: ToolChain.h:389
std::string getAsString() const
Retrieve a string representation of the version number.
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:4871
std::string ClangExecutable
The original path to the clang executable.
Definition: Driver.h:124
bool isCXX(ID Id)
isCXX - Is this a "C++" input (C++ and Obj-C++ sources and headers).
Definition: Types.cpp:133
RTTIMode getRTTIMode() const
Definition: ToolChain.h:218
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:34
const Driver & getDriver() const
Definition: Compilation.h:117
const llvm::Triple & getTriple() const
Definition: ToolChain.h:169
static Optional< unsigned > getSmallDataThreshold(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:405
static bool shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime, const llvm::Triple &Triple)
Definition: Clang.cpp:382
bool hasCompactBranches(StringRef &CPU)
Definition: Mips.cpp:372
const ToolChain & getToolChain() const
Definition: Tool.h:84
const char * CCLogDiagnosticsFilename
The file to log CC_LOG_DIAGNOSTICS output to, if enabled.
Definition: Driver.h:167
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
virtual bool GetDefaultStandaloneDebug() const
Definition: ToolChain.h:395
bool isNothing() const
Definition: InputInfo.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)
const char * getBaseInput() const
Definition: InputInfo.h:79
static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple)
Definition: Clang.cpp:506
static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs)
Add a CC1 option to specify the debug compilation directory.
Definition: Clang.cpp:599
static void ParseMRecip(const Driver &D, const ArgList &Args, ArgStringList &OutStrings)
The -mrecip flag requires processing of many optional parameters.
Definition: Clang.cpp:178
bool isFilename() const
Definition: InputInfo.h:76
Clang(const ToolChain &TC)
Definition: Clang.cpp:4718
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:645
static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec)
Vectorize at all optimization levels greater than 1 except for -Oz.
Definition: Clang.cpp:609
static bool maybeConsumeDash(const std::string &EH, size_t &I)
Definition: Clang.cpp:4850
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:216
const char * getClangProgramPath() const
Get the path to the main clang executable.
Definition: Driver.h:313
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:147
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:5169
bool CCCIsCPP() const
Whether the driver is just the preprocessor.
Definition: Driver.h:177
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
static bool shouldUseLeafFramePointer(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:583
static const char * getBaseInputStem(const llvm::opt::ArgList &Args, const InputInfoList &Inputs)
Definition: Clang.cpp:5118
static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs, const llvm::Triple &Triple, const InputInfo &Input)
Definition: Clang.cpp:2207
static bool ContainsCompileAction(const Action *A)
Check whether the given input tree contains any compilation actions.
Definition: Clang.cpp:830
static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A)
Definition: Clang.cpp:494
static bool ShouldDisableDwarfDirectory(const ArgList &Args, const ToolChain &TC)
Definition: Clang.cpp:484
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:910
const char * getOffloadingArch() const
Definition: Action.h:183
unsigned CCGenDiagnostics
Whether the driver is generating diagnostics for debugging purposes.
Definition: Driver.h:202
static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2327
bool isObjC(ID Id)
isObjC - Is this an "ObjC" input (Obj-C and Obj-C++ sources and headers).
Definition: Types.cpp:120
bool allowsWeak() const
Does this runtime allow the use of __weak?
Definition: ObjCRuntime.h:192
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:73
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:133