clang  7.0.0
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/RISCV.h"
16 #include "Arch/Sparc.h"
17 #include "Arch/SystemZ.h"
18 #include "Arch/X86.h"
19 #include "AMDGPU.h"
20 #include "CommonArgs.h"
21 #include "Hexagon.h"
22 #include "InputInfo.h"
23 #include "PS4CPU.h"
24 #include "clang/Basic/CharInfo.h"
27 #include "clang/Basic/Version.h"
29 #include "clang/Driver/Options.h"
31 #include "clang/Driver/XRayArgs.h"
32 #include "llvm/ADT/StringExtras.h"
33 #include "llvm/Config/llvm-config.h"
34 #include "llvm/Option/ArgList.h"
35 #include "llvm/Support/CodeGen.h"
36 #include "llvm/Support/Compression.h"
37 #include "llvm/Support/FileSystem.h"
38 #include "llvm/Support/Path.h"
39 #include "llvm/Support/Process.h"
40 #include "llvm/Support/TargetParser.h"
41 #include "llvm/Support/YAMLParser.h"
42 
43 #ifdef LLVM_ON_UNIX
44 #include <unistd.h> // For getuid().
45 #endif
46 
47 using namespace clang::driver;
48 using namespace clang::driver::tools;
49 using namespace clang;
50 using namespace llvm::opt;
51 
52 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
53  if (Arg *A =
54  Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
55  if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
56  !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
57  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
58  << A->getBaseArg().getAsString(Args)
59  << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
60  }
61  }
62 }
63 
64 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
65  // In gcc, only ARM checks this, but it seems reasonable to check universally.
66  if (Args.hasArg(options::OPT_static))
67  if (const Arg *A =
68  Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
69  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
70  << "-static";
71 }
72 
73 // Add backslashes to escape spaces and other backslashes.
74 // This is used for the space-separated argument list specified with
75 // the -dwarf-debug-flags option.
76 static void EscapeSpacesAndBackslashes(const char *Arg,
77  SmallVectorImpl<char> &Res) {
78  for (; *Arg; ++Arg) {
79  switch (*Arg) {
80  default:
81  break;
82  case ' ':
83  case '\\':
84  Res.push_back('\\');
85  break;
86  }
87  Res.push_back(*Arg);
88  }
89 }
90 
91 // Quote target names for inclusion in GNU Make dependency files.
92 // Only the characters '$', '#', ' ', '\t' are quoted.
93 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
94  for (unsigned i = 0, e = Target.size(); i != e; ++i) {
95  switch (Target[i]) {
96  case ' ':
97  case '\t':
98  // Escape the preceding backslashes
99  for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
100  Res.push_back('\\');
101 
102  // Escape the space/tab
103  Res.push_back('\\');
104  break;
105  case '$':
106  Res.push_back('$');
107  break;
108  case '#':
109  Res.push_back('\\');
110  break;
111  default:
112  break;
113  }
114 
115  Res.push_back(Target[i]);
116  }
117 }
118 
119 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
120 /// offloading tool chain that is associated with the current action \a JA.
121 static void
123  const ToolChain &RegularToolChain,
124  llvm::function_ref<void(const ToolChain &)> Work) {
125  // Apply Work on the current/regular tool chain.
126  Work(RegularToolChain);
127 
128  // Apply Work on all the offloading tool chains associated with the current
129  // action.
134  else if (JA.isHostOffloading(Action::OFK_HIP))
136  else if (JA.isDeviceOffloading(Action::OFK_HIP))
138 
141  for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
142  Work(*II->second);
143  } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
145 
146  //
147  // TODO: Add support for other offloading programming models here.
148  //
149 }
150 
151 /// This is a helper function for validating the optional refinement step
152 /// parameter in reciprocal argument strings. Return false if there is an error
153 /// parsing the refinement step. Otherwise, return true and set the Position
154 /// of the refinement step in the input string.
155 static bool getRefinementStep(StringRef In, const Driver &D,
156  const Arg &A, size_t &Position) {
157  const char RefinementStepToken = ':';
158  Position = In.find(RefinementStepToken);
159  if (Position != StringRef::npos) {
160  StringRef Option = A.getOption().getName();
161  StringRef RefStep = In.substr(Position + 1);
162  // Allow exactly one numeric character for the additional refinement
163  // step parameter. This is reasonable for all currently-supported
164  // operations and architectures because we would expect that a larger value
165  // of refinement steps would cause the estimate "optimization" to
166  // under-perform the native operation. Also, if the estimate does not
167  // converge quickly, it probably will not ever converge, so further
168  // refinement steps will not produce a better answer.
169  if (RefStep.size() != 1) {
170  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
171  return false;
172  }
173  char RefStepChar = RefStep[0];
174  if (RefStepChar < '0' || RefStepChar > '9') {
175  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
176  return false;
177  }
178  }
179  return true;
180 }
181 
182 /// The -mrecip flag requires processing of many optional parameters.
183 static void ParseMRecip(const Driver &D, const ArgList &Args,
184  ArgStringList &OutStrings) {
185  StringRef DisabledPrefixIn = "!";
186  StringRef DisabledPrefixOut = "!";
187  StringRef EnabledPrefixOut = "";
188  StringRef Out = "-mrecip=";
189 
190  Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
191  if (!A)
192  return;
193 
194  unsigned NumOptions = A->getNumValues();
195  if (NumOptions == 0) {
196  // No option is the same as "all".
197  OutStrings.push_back(Args.MakeArgString(Out + "all"));
198  return;
199  }
200 
201  // Pass through "all", "none", or "default" with an optional refinement step.
202  if (NumOptions == 1) {
203  StringRef Val = A->getValue(0);
204  size_t RefStepLoc;
205  if (!getRefinementStep(Val, D, *A, RefStepLoc))
206  return;
207  StringRef ValBase = Val.slice(0, RefStepLoc);
208  if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
209  OutStrings.push_back(Args.MakeArgString(Out + Val));
210  return;
211  }
212  }
213 
214  // Each reciprocal type may be enabled or disabled individually.
215  // Check each input value for validity, concatenate them all back together,
216  // and pass through.
217 
218  llvm::StringMap<bool> OptionStrings;
219  OptionStrings.insert(std::make_pair("divd", false));
220  OptionStrings.insert(std::make_pair("divf", false));
221  OptionStrings.insert(std::make_pair("vec-divd", false));
222  OptionStrings.insert(std::make_pair("vec-divf", false));
223  OptionStrings.insert(std::make_pair("sqrtd", false));
224  OptionStrings.insert(std::make_pair("sqrtf", false));
225  OptionStrings.insert(std::make_pair("vec-sqrtd", false));
226  OptionStrings.insert(std::make_pair("vec-sqrtf", false));
227 
228  for (unsigned i = 0; i != NumOptions; ++i) {
229  StringRef Val = A->getValue(i);
230 
231  bool IsDisabled = Val.startswith(DisabledPrefixIn);
232  // Ignore the disablement token for string matching.
233  if (IsDisabled)
234  Val = Val.substr(1);
235 
236  size_t RefStep;
237  if (!getRefinementStep(Val, D, *A, RefStep))
238  return;
239 
240  StringRef ValBase = Val.slice(0, RefStep);
241  llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
242  if (OptionIter == OptionStrings.end()) {
243  // Try again specifying float suffix.
244  OptionIter = OptionStrings.find(ValBase.str() + 'f');
245  if (OptionIter == OptionStrings.end()) {
246  // The input name did not match any known option string.
247  D.Diag(diag::err_drv_unknown_argument) << Val;
248  return;
249  }
250  // The option was specified without a float or double suffix.
251  // Make sure that the double entry was not already specified.
252  // The float entry will be checked below.
253  if (OptionStrings[ValBase.str() + 'd']) {
254  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
255  return;
256  }
257  }
258 
259  if (OptionIter->second == true) {
260  // Duplicate option specified.
261  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
262  return;
263  }
264 
265  // Mark the matched option as found. Do not allow duplicate specifiers.
266  OptionIter->second = true;
267 
268  // If the precision was not specified, also mark the double entry as found.
269  if (ValBase.back() != 'f' && ValBase.back() != 'd')
270  OptionStrings[ValBase.str() + 'd'] = true;
271 
272  // Build the output string.
273  StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
274  Out = Args.MakeArgString(Out + Prefix + Val);
275  if (i != NumOptions - 1)
276  Out = Args.MakeArgString(Out + ",");
277  }
278 
279  OutStrings.push_back(Args.MakeArgString(Out));
280 }
281 
282 /// The -mprefer-vector-width option accepts either a positive integer
283 /// or the string "none".
284 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
285  ArgStringList &CmdArgs) {
286  Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
287  if (!A)
288  return;
289 
290  StringRef Value = A->getValue();
291  if (Value == "none") {
292  CmdArgs.push_back("-mprefer-vector-width=none");
293  } else {
294  unsigned Width;
295  if (Value.getAsInteger(10, Width)) {
296  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
297  return;
298  }
299  CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
300  }
301 }
302 
303 static void getWebAssemblyTargetFeatures(const ArgList &Args,
304  std::vector<StringRef> &Features) {
305  handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
306 }
307 
308 static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
309  const ArgList &Args, ArgStringList &CmdArgs,
310  bool ForAS) {
311  const Driver &D = TC.getDriver();
312  std::vector<StringRef> Features;
313  switch (Triple.getArch()) {
314  default:
315  break;
316  case llvm::Triple::mips:
317  case llvm::Triple::mipsel:
318  case llvm::Triple::mips64:
319  case llvm::Triple::mips64el:
320  mips::getMIPSTargetFeatures(D, Triple, Args, Features);
321  break;
322 
323  case llvm::Triple::arm:
324  case llvm::Triple::armeb:
325  case llvm::Triple::thumb:
326  case llvm::Triple::thumbeb:
327  arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
328  break;
329 
330  case llvm::Triple::ppc:
331  case llvm::Triple::ppc64:
332  case llvm::Triple::ppc64le:
333  ppc::getPPCTargetFeatures(D, Triple, Args, Features);
334  break;
335  case llvm::Triple::riscv32:
336  case llvm::Triple::riscv64:
337  riscv::getRISCVTargetFeatures(D, Args, Features);
338  break;
339  case llvm::Triple::systemz:
340  systemz::getSystemZTargetFeatures(Args, Features);
341  break;
342  case llvm::Triple::aarch64:
343  case llvm::Triple::aarch64_be:
344  aarch64::getAArch64TargetFeatures(D, Args, Features);
345  break;
346  case llvm::Triple::x86:
347  case llvm::Triple::x86_64:
348  x86::getX86TargetFeatures(D, Triple, Args, Features);
349  break;
350  case llvm::Triple::hexagon:
351  hexagon::getHexagonTargetFeatures(D, Args, Features);
352  break;
353  case llvm::Triple::wasm32:
354  case llvm::Triple::wasm64:
355  getWebAssemblyTargetFeatures(Args, Features);
356  break;
357  case llvm::Triple::sparc:
358  case llvm::Triple::sparcel:
359  case llvm::Triple::sparcv9:
360  sparc::getSparcTargetFeatures(D, Args, Features);
361  break;
362  case llvm::Triple::r600:
363  case llvm::Triple::amdgcn:
364  amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
365  break;
366  }
367 
368  // Find the last of each feature.
369  llvm::StringMap<unsigned> LastOpt;
370  for (unsigned I = 0, N = Features.size(); I < N; ++I) {
371  StringRef Name = Features[I];
372  assert(Name[0] == '-' || Name[0] == '+');
373  LastOpt[Name.drop_front(1)] = I;
374  }
375 
376  for (unsigned I = 0, N = Features.size(); I < N; ++I) {
377  // If this feature was overridden, ignore it.
378  StringRef Name = Features[I];
379  llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
380  assert(LastI != LastOpt.end());
381  unsigned Last = LastI->second;
382  if (Last != I)
383  continue;
384 
385  CmdArgs.push_back("-target-feature");
386  CmdArgs.push_back(Name.data());
387  }
388 }
389 
390 static bool
392  const llvm::Triple &Triple) {
393  // We use the zero-cost exception tables for Objective-C if the non-fragile
394  // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
395  // later.
396  if (runtime.isNonFragile())
397  return true;
398 
399  if (!Triple.isMacOSX())
400  return false;
401 
402  return (!Triple.isMacOSXVersionLT(10, 5) &&
403  (Triple.getArch() == llvm::Triple::x86_64 ||
404  Triple.getArch() == llvm::Triple::arm));
405 }
406 
407 /// Adds exception related arguments to the driver command arguments. There's a
408 /// master flag, -fexceptions and also language specific flags to enable/disable
409 /// C++ and Objective-C exceptions. This makes it possible to for example
410 /// disable C++ exceptions but enable Objective-C exceptions.
411 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
412  const ToolChain &TC, bool KernelOrKext,
413  const ObjCRuntime &objcRuntime,
414  ArgStringList &CmdArgs) {
415  const llvm::Triple &Triple = TC.getTriple();
416 
417  if (KernelOrKext) {
418  // -mkernel and -fapple-kext imply no exceptions, so claim exception related
419  // arguments now to avoid warnings about unused arguments.
420  Args.ClaimAllArgs(options::OPT_fexceptions);
421  Args.ClaimAllArgs(options::OPT_fno_exceptions);
422  Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
423  Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
424  Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
425  Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
426  return;
427  }
428 
429  // See if the user explicitly enabled exceptions.
430  bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
431  false);
432 
433  // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
434  // is not necessarily sensible, but follows GCC.
435  if (types::isObjC(InputType) &&
436  Args.hasFlag(options::OPT_fobjc_exceptions,
437  options::OPT_fno_objc_exceptions, true)) {
438  CmdArgs.push_back("-fobjc-exceptions");
439 
440  EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
441  }
442 
443  if (types::isCXX(InputType)) {
444  // Disable C++ EH by default on XCore and PS4.
445  bool CXXExceptionsEnabled =
446  Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
447  Arg *ExceptionArg = Args.getLastArg(
448  options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
449  options::OPT_fexceptions, options::OPT_fno_exceptions);
450  if (ExceptionArg)
451  CXXExceptionsEnabled =
452  ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
453  ExceptionArg->getOption().matches(options::OPT_fexceptions);
454 
455  if (CXXExceptionsEnabled) {
456  CmdArgs.push_back("-fcxx-exceptions");
457 
458  EH = true;
459  }
460  }
461 
462  if (EH)
463  CmdArgs.push_back("-fexceptions");
464 }
465 
466 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
467  bool Default = true;
468  if (TC.getTriple().isOSDarwin()) {
469  // The native darwin assembler doesn't support the linker_option directives,
470  // so we disable them if we think the .s file will be passed to it.
471  Default = TC.useIntegratedAs();
472  }
473  return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
474  Default);
475 }
476 
477 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
478  const ToolChain &TC) {
479  bool UseDwarfDirectory =
480  Args.hasFlag(options::OPT_fdwarf_directory_asm,
481  options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
482  return !UseDwarfDirectory;
483 }
484 
485 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
486 // to the corresponding DebugInfoKind.
488  assert(A.getOption().matches(options::OPT_gN_Group) &&
489  "Not a -g option that specifies a debug-info level");
490  if (A.getOption().matches(options::OPT_g0) ||
491  A.getOption().matches(options::OPT_ggdb0))
493  if (A.getOption().matches(options::OPT_gline_tables_only) ||
494  A.getOption().matches(options::OPT_ggdb1))
497 }
498 
499 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
500  switch (Triple.getArch()){
501  default:
502  return false;
503  case llvm::Triple::arm:
504  case llvm::Triple::thumb:
505  // ARM Darwin targets require a frame pointer to be always present to aid
506  // offline debugging via backtraces.
507  return Triple.isOSDarwin();
508  }
509 }
510 
511 static bool useFramePointerForTargetByDefault(const ArgList &Args,
512  const llvm::Triple &Triple) {
513  switch (Triple.getArch()) {
514  case llvm::Triple::xcore:
515  case llvm::Triple::wasm32:
516  case llvm::Triple::wasm64:
517  // XCore never wants frame pointers, regardless of OS.
518  // WebAssembly never wants frame pointers.
519  return false;
520  case llvm::Triple::riscv32:
521  case llvm::Triple::riscv64:
522  return !areOptimizationsEnabled(Args);
523  default:
524  break;
525  }
526 
527  if (Triple.getOS() == llvm::Triple::NetBSD) {
528  return !areOptimizationsEnabled(Args);
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 /// Add a CC1 and CC1AS option to specify the debug file path prefix map.
608 static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
609  for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
610  StringRef Map = A->getValue();
611  if (Map.find('=') == StringRef::npos)
612  D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
613  else
614  CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
615  A->claim();
616  }
617 }
618 
619 /// Vectorize at all optimization levels greater than 1 except for -Oz.
620 /// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
621 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
622  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
623  if (A->getOption().matches(options::OPT_O4) ||
624  A->getOption().matches(options::OPT_Ofast))
625  return true;
626 
627  if (A->getOption().matches(options::OPT_O0))
628  return false;
629 
630  assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
631 
632  // Vectorize -Os.
633  StringRef S(A->getValue());
634  if (S == "s")
635  return true;
636 
637  // Don't vectorize -Oz, unless it's the slp vectorizer.
638  if (S == "z")
639  return isSlpVec;
640 
641  unsigned OptLevel = 0;
642  if (S.getAsInteger(10, OptLevel))
643  return false;
644 
645  return OptLevel > 1;
646  }
647 
648  return false;
649 }
650 
651 /// Add -x lang to \p CmdArgs for \p Input.
652 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
653  ArgStringList &CmdArgs) {
654  // When using -verify-pch, we don't want to provide the type
655  // 'precompiled-header' if it was inferred from the file extension
656  if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
657  return;
658 
659  CmdArgs.push_back("-x");
660  if (Args.hasArg(options::OPT_rewrite_objc))
661  CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
662  else {
663  // Map the driver type to the frontend type. This is mostly an identity
664  // mapping, except that the distinction between module interface units
665  // and other source files does not exist at the frontend layer.
666  const char *ClangType;
667  switch (Input.getType()) {
668  case types::TY_CXXModule:
669  ClangType = "c++";
670  break;
671  case types::TY_PP_CXXModule:
672  ClangType = "c++-cpp-output";
673  break;
674  default:
675  ClangType = types::getTypeName(Input.getType());
676  break;
677  }
678  CmdArgs.push_back(ClangType);
679  }
680 }
681 
683 #ifdef LLVM_ON_UNIX
684  const char *Username = getenv("LOGNAME");
685 #else
686  const char *Username = getenv("USERNAME");
687 #endif
688  if (Username) {
689  // Validate that LoginName can be used in a path, and get its length.
690  size_t Len = 0;
691  for (const char *P = Username; *P; ++P, ++Len) {
692  if (!clang::isAlphanumeric(*P) && *P != '_') {
693  Username = nullptr;
694  break;
695  }
696  }
697 
698  if (Username && Len > 0) {
699  Result.append(Username, Username + Len);
700  return;
701  }
702  }
703 
704 // Fallback to user id.
705 #ifdef LLVM_ON_UNIX
706  std::string UID = llvm::utostr(getuid());
707 #else
708  // FIXME: Windows seems to have an 'SID' that might work.
709  std::string UID = "9999";
710 #endif
711  Result.append(UID.begin(), UID.end());
712 }
713 
714 static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
715  const InputInfo &Output, const ArgList &Args,
716  ArgStringList &CmdArgs) {
717 
718  auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
719  options::OPT_fprofile_generate_EQ,
720  options::OPT_fno_profile_generate);
721  if (PGOGenerateArg &&
722  PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
723  PGOGenerateArg = nullptr;
724 
725  auto *ProfileGenerateArg = Args.getLastArg(
726  options::OPT_fprofile_instr_generate,
727  options::OPT_fprofile_instr_generate_EQ,
728  options::OPT_fno_profile_instr_generate);
729  if (ProfileGenerateArg &&
730  ProfileGenerateArg->getOption().matches(
731  options::OPT_fno_profile_instr_generate))
732  ProfileGenerateArg = nullptr;
733 
734  if (PGOGenerateArg && ProfileGenerateArg)
735  D.Diag(diag::err_drv_argument_not_allowed_with)
736  << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
737 
738  auto *ProfileUseArg = getLastProfileUseArg(Args);
739 
740  if (PGOGenerateArg && ProfileUseArg)
741  D.Diag(diag::err_drv_argument_not_allowed_with)
742  << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
743 
744  if (ProfileGenerateArg && ProfileUseArg)
745  D.Diag(diag::err_drv_argument_not_allowed_with)
746  << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
747 
748  if (ProfileGenerateArg) {
749  if (ProfileGenerateArg->getOption().matches(
750  options::OPT_fprofile_instr_generate_EQ))
751  CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
752  ProfileGenerateArg->getValue()));
753  // The default is to use Clang Instrumentation.
754  CmdArgs.push_back("-fprofile-instrument=clang");
755  }
756 
757  if (PGOGenerateArg) {
758  CmdArgs.push_back("-fprofile-instrument=llvm");
759  if (PGOGenerateArg->getOption().matches(
760  options::OPT_fprofile_generate_EQ)) {
761  SmallString<128> Path(PGOGenerateArg->getValue());
762  llvm::sys::path::append(Path, "default_%m.profraw");
763  CmdArgs.push_back(
764  Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
765  }
766  }
767 
768  if (ProfileUseArg) {
769  if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
770  CmdArgs.push_back(Args.MakeArgString(
771  Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
772  else if ((ProfileUseArg->getOption().matches(
773  options::OPT_fprofile_use_EQ) ||
774  ProfileUseArg->getOption().matches(
775  options::OPT_fprofile_instr_use))) {
776  SmallString<128> Path(
777  ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
778  if (Path.empty() || llvm::sys::fs::is_directory(Path))
779  llvm::sys::path::append(Path, "default.profdata");
780  CmdArgs.push_back(
781  Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
782  }
783  }
784 
785  if (Args.hasArg(options::OPT_ftest_coverage) ||
786  Args.hasArg(options::OPT_coverage))
787  CmdArgs.push_back("-femit-coverage-notes");
788  if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
789  false) ||
790  Args.hasArg(options::OPT_coverage))
791  CmdArgs.push_back("-femit-coverage-data");
792 
793  if (Args.hasFlag(options::OPT_fcoverage_mapping,
794  options::OPT_fno_coverage_mapping, false)) {
795  if (!ProfileGenerateArg)
796  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
797  << "-fcoverage-mapping"
798  << "-fprofile-instr-generate";
799 
800  CmdArgs.push_back("-fcoverage-mapping");
801  }
802 
803  if (C.getArgs().hasArg(options::OPT_c) ||
804  C.getArgs().hasArg(options::OPT_S)) {
805  if (Output.isFilename()) {
806  CmdArgs.push_back("-coverage-notes-file");
807  SmallString<128> OutputFilename;
808  if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
809  OutputFilename = FinalOutput->getValue();
810  else
811  OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
812  SmallString<128> CoverageFilename = OutputFilename;
813  if (llvm::sys::path::is_relative(CoverageFilename)) {
814  SmallString<128> Pwd;
815  if (!llvm::sys::fs::current_path(Pwd)) {
816  llvm::sys::path::append(Pwd, CoverageFilename);
817  CoverageFilename.swap(Pwd);
818  }
819  }
820  llvm::sys::path::replace_extension(CoverageFilename, "gcno");
821  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
822 
823  // Leave -fprofile-dir= an unused argument unless .gcda emission is
824  // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
825  // the flag used. There is no -fno-profile-dir, so the user has no
826  // targeted way to suppress the warning.
827  if (Args.hasArg(options::OPT_fprofile_arcs) ||
828  Args.hasArg(options::OPT_coverage)) {
829  CmdArgs.push_back("-coverage-data-file");
830  if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
831  CoverageFilename = FProfileDir->getValue();
832  llvm::sys::path::append(CoverageFilename, OutputFilename);
833  }
834  llvm::sys::path::replace_extension(CoverageFilename, "gcda");
835  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
836  }
837  }
838  }
839 }
840 
841 /// Check whether the given input tree contains any compilation actions.
842 static bool ContainsCompileAction(const Action *A) {
843  if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
844  return true;
845 
846  for (const auto &AI : A->inputs())
847  if (ContainsCompileAction(AI))
848  return true;
849 
850  return false;
851 }
852 
853 /// Check if -relax-all should be passed to the internal assembler.
854 /// This is done by default when compiling non-assembler source with -O0.
855 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
856  bool RelaxDefault = true;
857 
858  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
859  RelaxDefault = A->getOption().matches(options::OPT_O0);
860 
861  if (RelaxDefault) {
862  RelaxDefault = false;
863  for (const auto &Act : C.getActions()) {
864  if (ContainsCompileAction(Act)) {
865  RelaxDefault = true;
866  break;
867  }
868  }
869  }
870 
871  return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
872  RelaxDefault);
873 }
874 
875 // Extract the integer N from a string spelled "-dwarf-N", returning 0
876 // on mismatch. The StringRef input (rather than an Arg) allows
877 // for use by the "-Xassembler" option parser.
878 static unsigned DwarfVersionNum(StringRef ArgValue) {
879  return llvm::StringSwitch<unsigned>(ArgValue)
880  .Case("-gdwarf-2", 2)
881  .Case("-gdwarf-3", 3)
882  .Case("-gdwarf-4", 4)
883  .Case("-gdwarf-5", 5)
884  .Default(0);
885 }
886 
887 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
889  unsigned DwarfVersion,
890  llvm::DebuggerKind DebuggerTuning) {
891  switch (DebugInfoKind) {
893  CmdArgs.push_back("-debug-info-kind=line-tables-only");
894  break;
896  CmdArgs.push_back("-debug-info-kind=limited");
897  break;
899  CmdArgs.push_back("-debug-info-kind=standalone");
900  break;
901  default:
902  break;
903  }
904  if (DwarfVersion > 0)
905  CmdArgs.push_back(
906  Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
907  switch (DebuggerTuning) {
908  case llvm::DebuggerKind::GDB:
909  CmdArgs.push_back("-debugger-tuning=gdb");
910  break;
911  case llvm::DebuggerKind::LLDB:
912  CmdArgs.push_back("-debugger-tuning=lldb");
913  break;
914  case llvm::DebuggerKind::SCE:
915  CmdArgs.push_back("-debugger-tuning=sce");
916  break;
917  default:
918  break;
919  }
920 }
921 
922 static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
923  const Driver &D, const ToolChain &TC) {
924  assert(A && "Expected non-nullptr argument.");
925  if (TC.supportsDebugInfoOption(A))
926  return true;
927  D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
928  << A->getAsString(Args) << TC.getTripleString();
929  return false;
930 }
931 
932 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
933  ArgStringList &CmdArgs,
934  const Driver &D,
935  const ToolChain &TC) {
936  const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
937  if (!A)
938  return;
939  if (checkDebugInfoOption(A, Args, D, TC)) {
940  if (A->getOption().getID() == options::OPT_gz) {
941  if (llvm::zlib::isAvailable())
942  CmdArgs.push_back("-compress-debug-sections");
943  else
944  D.Diag(diag::warn_debug_compression_unavailable);
945  return;
946  }
947 
948  StringRef Value = A->getValue();
949  if (Value == "none") {
950  CmdArgs.push_back("-compress-debug-sections=none");
951  } else if (Value == "zlib" || Value == "zlib-gnu") {
952  if (llvm::zlib::isAvailable()) {
953  CmdArgs.push_back(
954  Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
955  } else {
956  D.Diag(diag::warn_debug_compression_unavailable);
957  }
958  } else {
959  D.Diag(diag::err_drv_unsupported_option_argument)
960  << A->getOption().getName() << Value;
961  }
962  }
963 }
964 
965 static const char *RelocationModelName(llvm::Reloc::Model Model) {
966  switch (Model) {
967  case llvm::Reloc::Static:
968  return "static";
969  case llvm::Reloc::PIC_:
970  return "pic";
971  case llvm::Reloc::DynamicNoPIC:
972  return "dynamic-no-pic";
973  case llvm::Reloc::ROPI:
974  return "ropi";
975  case llvm::Reloc::RWPI:
976  return "rwpi";
977  case llvm::Reloc::ROPI_RWPI:
978  return "ropi-rwpi";
979  }
980  llvm_unreachable("Unknown Reloc::Model kind");
981 }
982 
983 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
984  const Driver &D, const ArgList &Args,
985  ArgStringList &CmdArgs,
986  const InputInfo &Output,
987  const InputInfoList &Inputs) const {
988  Arg *A;
989  const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
990 
991  CheckPreprocessingOptions(D, Args);
992 
993  Args.AddLastArg(CmdArgs, options::OPT_C);
994  Args.AddLastArg(CmdArgs, options::OPT_CC);
995 
996  // Handle dependency file generation.
997  if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
998  (A = Args.getLastArg(options::OPT_MD)) ||
999  (A = Args.getLastArg(options::OPT_MMD))) {
1000  // Determine the output location.
1001  const char *DepFile;
1002  if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1003  DepFile = MF->getValue();
1004  C.addFailureResultFile(DepFile, &JA);
1005  } else if (Output.getType() == types::TY_Dependencies) {
1006  DepFile = Output.getFilename();
1007  } else if (A->getOption().matches(options::OPT_M) ||
1008  A->getOption().matches(options::OPT_MM)) {
1009  DepFile = "-";
1010  } else {
1011  DepFile = getDependencyFileName(Args, Inputs);
1012  C.addFailureResultFile(DepFile, &JA);
1013  }
1014  CmdArgs.push_back("-dependency-file");
1015  CmdArgs.push_back(DepFile);
1016 
1017  // Add a default target if one wasn't specified.
1018  if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
1019  const char *DepTarget;
1020 
1021  // If user provided -o, that is the dependency target, except
1022  // when we are only generating a dependency file.
1023  Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1024  if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1025  DepTarget = OutputOpt->getValue();
1026  } else {
1027  // Otherwise derive from the base input.
1028  //
1029  // FIXME: This should use the computed output file location.
1030  SmallString<128> P(Inputs[0].getBaseInput());
1031  llvm::sys::path::replace_extension(P, "o");
1032  DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1033  }
1034 
1035  if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1036  CmdArgs.push_back("-w");
1037  }
1038  CmdArgs.push_back("-MT");
1040  QuoteTarget(DepTarget, Quoted);
1041  CmdArgs.push_back(Args.MakeArgString(Quoted));
1042  }
1043 
1044  if (A->getOption().matches(options::OPT_M) ||
1045  A->getOption().matches(options::OPT_MD))
1046  CmdArgs.push_back("-sys-header-deps");
1047  if ((isa<PrecompileJobAction>(JA) &&
1048  !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1049  Args.hasArg(options::OPT_fmodule_file_deps))
1050  CmdArgs.push_back("-module-file-deps");
1051  }
1052 
1053  if (Args.hasArg(options::OPT_MG)) {
1054  if (!A || A->getOption().matches(options::OPT_MD) ||
1055  A->getOption().matches(options::OPT_MMD))
1056  D.Diag(diag::err_drv_mg_requires_m_or_mm);
1057  CmdArgs.push_back("-MG");
1058  }
1059 
1060  Args.AddLastArg(CmdArgs, options::OPT_MP);
1061  Args.AddLastArg(CmdArgs, options::OPT_MV);
1062 
1063  // Convert all -MQ <target> args to -MT <quoted target>
1064  for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1065  A->claim();
1066 
1067  if (A->getOption().matches(options::OPT_MQ)) {
1068  CmdArgs.push_back("-MT");
1070  QuoteTarget(A->getValue(), Quoted);
1071  CmdArgs.push_back(Args.MakeArgString(Quoted));
1072 
1073  // -MT flag - no change
1074  } else {
1075  A->render(Args, CmdArgs);
1076  }
1077  }
1078 
1079  // Add offload include arguments specific for CUDA. This must happen before
1080  // we -I or -include anything else, because we must pick up the CUDA headers
1081  // from the particular CUDA installation, rather than from e.g.
1082  // /usr/local/include.
1084  getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1085 
1086  // Add -i* options, and automatically translate to
1087  // -include-pch/-include-pth for transparent PCH support. It's
1088  // wonky, but we include looking for .gch so we can support seamless
1089  // replacement into a build system already set up to be generating
1090  // .gch files.
1091 
1092  if (getToolChain().getDriver().IsCLMode()) {
1093  const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1094  const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1095  if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1097  CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1098  }
1099  if (YcArg || YuArg) {
1100  StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1101  if (!isa<PrecompileJobAction>(JA)) {
1102  CmdArgs.push_back("-include-pch");
1103  CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(C, ThroughHeader)));
1104  }
1105  CmdArgs.push_back(
1106  Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1107  }
1108  }
1109 
1110  bool RenderedImplicitInclude = false;
1111  for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1112  if (A->getOption().matches(options::OPT_include)) {
1113  // Handling of gcc-style gch precompiled headers.
1114  bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1115  RenderedImplicitInclude = true;
1116 
1117  // Use PCH if the user requested it.
1118  bool UsePCH = D.CCCUsePCH;
1119 
1120  bool FoundPTH = false;
1121  bool FoundPCH = false;
1122  SmallString<128> P(A->getValue());
1123  // We want the files to have a name like foo.h.pch. Add a dummy extension
1124  // so that replace_extension does the right thing.
1125  P += ".dummy";
1126  if (UsePCH) {
1127  llvm::sys::path::replace_extension(P, "pch");
1128  if (llvm::sys::fs::exists(P))
1129  FoundPCH = true;
1130  }
1131 
1132  if (!FoundPCH) {
1133  llvm::sys::path::replace_extension(P, "pth");
1134  if (llvm::sys::fs::exists(P))
1135  FoundPTH = true;
1136  }
1137 
1138  if (!FoundPCH && !FoundPTH) {
1139  llvm::sys::path::replace_extension(P, "gch");
1140  if (llvm::sys::fs::exists(P)) {
1141  FoundPCH = UsePCH;
1142  FoundPTH = !UsePCH;
1143  }
1144  }
1145 
1146  if (FoundPCH || FoundPTH) {
1147  if (IsFirstImplicitInclude) {
1148  A->claim();
1149  if (UsePCH)
1150  CmdArgs.push_back("-include-pch");
1151  else
1152  CmdArgs.push_back("-include-pth");
1153  CmdArgs.push_back(Args.MakeArgString(P));
1154  continue;
1155  } else {
1156  // Ignore the PCH if not first on command line and emit warning.
1157  D.Diag(diag::warn_drv_pch_not_first_include) << P
1158  << A->getAsString(Args);
1159  }
1160  }
1161  } else if (A->getOption().matches(options::OPT_isystem_after)) {
1162  // Handling of paths which must come late. These entries are handled by
1163  // the toolchain itself after the resource dir is inserted in the right
1164  // search order.
1165  // Do not claim the argument so that the use of the argument does not
1166  // silently go unnoticed on toolchains which do not honour the option.
1167  continue;
1168  }
1169 
1170  // Not translated, render as usual.
1171  A->claim();
1172  A->render(Args, CmdArgs);
1173  }
1174 
1175  Args.AddAllArgs(CmdArgs,
1176  {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1177  options::OPT_F, options::OPT_index_header_map});
1178 
1179  // Add -Wp, and -Xpreprocessor if using the preprocessor.
1180 
1181  // FIXME: There is a very unfortunate problem here, some troubled
1182  // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1183  // really support that we would have to parse and then translate
1184  // those options. :(
1185  Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1186  options::OPT_Xpreprocessor);
1187 
1188  // -I- is a deprecated GCC feature, reject it.
1189  if (Arg *A = Args.getLastArg(options::OPT_I_))
1190  D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1191 
1192  // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1193  // -isysroot to the CC1 invocation.
1194  StringRef sysroot = C.getSysRoot();
1195  if (sysroot != "") {
1196  if (!Args.hasArg(options::OPT_isysroot)) {
1197  CmdArgs.push_back("-isysroot");
1198  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1199  }
1200  }
1201 
1202  // Parse additional include paths from environment variables.
1203  // FIXME: We should probably sink the logic for handling these from the
1204  // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1205  // CPATH - included following the user specified includes (but prior to
1206  // builtin and standard includes).
1207  addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1208  // C_INCLUDE_PATH - system includes enabled when compiling C.
1209  addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1210  // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1211  addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1212  // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1213  addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1214  // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1215  addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1216 
1217  // While adding the include arguments, we also attempt to retrieve the
1218  // arguments of related offloading toolchains or arguments that are specific
1219  // of an offloading programming model.
1220 
1221  // Add C++ include arguments, if needed.
1222  if (types::isCXX(Inputs[0].getType()))
1223  forAllAssociatedToolChains(C, JA, getToolChain(),
1224  [&Args, &CmdArgs](const ToolChain &TC) {
1225  TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1226  });
1227 
1228  // Add system include arguments for all targets but IAMCU.
1229  if (!IsIAMCU)
1230  forAllAssociatedToolChains(C, JA, getToolChain(),
1231  [&Args, &CmdArgs](const ToolChain &TC) {
1232  TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1233  });
1234  else {
1235  // For IAMCU add special include arguments.
1236  getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1237  }
1238 }
1239 
1240 // FIXME: Move to target hook.
1241 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1242  switch (Triple.getArch()) {
1243  default:
1244  return true;
1245 
1246  case llvm::Triple::aarch64:
1247  case llvm::Triple::aarch64_be:
1248  case llvm::Triple::arm:
1249  case llvm::Triple::armeb:
1250  case llvm::Triple::thumb:
1251  case llvm::Triple::thumbeb:
1252  if (Triple.isOSDarwin() || Triple.isOSWindows())
1253  return true;
1254  return false;
1255 
1256  case llvm::Triple::ppc:
1257  case llvm::Triple::ppc64:
1258  if (Triple.isOSDarwin())
1259  return true;
1260  return false;
1261 
1262  case llvm::Triple::hexagon:
1263  case llvm::Triple::ppc64le:
1264  case llvm::Triple::riscv32:
1265  case llvm::Triple::riscv64:
1266  case llvm::Triple::systemz:
1267  case llvm::Triple::xcore:
1268  return false;
1269  }
1270 }
1271 
1272 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1273  switch (Triple.getArch()) {
1274  default:
1275  if (Triple.isOSFuchsia())
1276  return true;
1277  return false;
1278 
1279  case llvm::Triple::xcore:
1280  case llvm::Triple::wasm32:
1281  case llvm::Triple::wasm64:
1282  return true;
1283  }
1284 }
1285 
1286 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1287  ArgStringList &CmdArgs, bool KernelOrKext) const {
1288  // Select the ABI to use.
1289  // FIXME: Support -meabi.
1290  // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1291  const char *ABIName = nullptr;
1292  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1293  ABIName = A->getValue();
1294  else {
1295  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1296  ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1297  }
1298 
1299  CmdArgs.push_back("-target-abi");
1300  CmdArgs.push_back(ABIName);
1301 
1302  // Determine floating point ABI from the options & target defaults.
1303  arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1304  if (ABI == arm::FloatABI::Soft) {
1305  // Floating point operations and argument passing are soft.
1306  // FIXME: This changes CPP defines, we need -target-soft-float.
1307  CmdArgs.push_back("-msoft-float");
1308  CmdArgs.push_back("-mfloat-abi");
1309  CmdArgs.push_back("soft");
1310  } else if (ABI == arm::FloatABI::SoftFP) {
1311  // Floating point operations are hard, but argument passing is soft.
1312  CmdArgs.push_back("-mfloat-abi");
1313  CmdArgs.push_back("soft");
1314  } else {
1315  // Floating point operations and argument passing are hard.
1316  assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1317  CmdArgs.push_back("-mfloat-abi");
1318  CmdArgs.push_back("hard");
1319  }
1320 
1321  // Forward the -mglobal-merge option for explicit control over the pass.
1322  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1323  options::OPT_mno_global_merge)) {
1324  CmdArgs.push_back("-mllvm");
1325  if (A->getOption().matches(options::OPT_mno_global_merge))
1326  CmdArgs.push_back("-arm-global-merge=false");
1327  else
1328  CmdArgs.push_back("-arm-global-merge=true");
1329  }
1330 
1331  if (!Args.hasFlag(options::OPT_mimplicit_float,
1332  options::OPT_mno_implicit_float, true))
1333  CmdArgs.push_back("-no-implicit-float");
1334 }
1335 
1336 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1337  const ArgList &Args, bool KernelOrKext,
1338  ArgStringList &CmdArgs) const {
1339  const ToolChain &TC = getToolChain();
1340 
1341  // Add the target features
1342  getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1343 
1344  // Add target specific flags.
1345  switch (TC.getArch()) {
1346  default:
1347  break;
1348 
1349  case llvm::Triple::arm:
1350  case llvm::Triple::armeb:
1351  case llvm::Triple::thumb:
1352  case llvm::Triple::thumbeb:
1353  // Use the effective triple, which takes into account the deployment target.
1354  AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1355  CmdArgs.push_back("-fallow-half-arguments-and-returns");
1356  break;
1357 
1358  case llvm::Triple::aarch64:
1359  case llvm::Triple::aarch64_be:
1360  AddAArch64TargetArgs(Args, CmdArgs);
1361  CmdArgs.push_back("-fallow-half-arguments-and-returns");
1362  break;
1363 
1364  case llvm::Triple::mips:
1365  case llvm::Triple::mipsel:
1366  case llvm::Triple::mips64:
1367  case llvm::Triple::mips64el:
1368  AddMIPSTargetArgs(Args, CmdArgs);
1369  break;
1370 
1371  case llvm::Triple::ppc:
1372  case llvm::Triple::ppc64:
1373  case llvm::Triple::ppc64le:
1374  AddPPCTargetArgs(Args, CmdArgs);
1375  break;
1376 
1377  case llvm::Triple::riscv32:
1378  case llvm::Triple::riscv64:
1379  AddRISCVTargetArgs(Args, CmdArgs);
1380  break;
1381 
1382  case llvm::Triple::sparc:
1383  case llvm::Triple::sparcel:
1384  case llvm::Triple::sparcv9:
1385  AddSparcTargetArgs(Args, CmdArgs);
1386  break;
1387 
1388  case llvm::Triple::systemz:
1389  AddSystemZTargetArgs(Args, CmdArgs);
1390  break;
1391 
1392  case llvm::Triple::x86:
1393  case llvm::Triple::x86_64:
1394  AddX86TargetArgs(Args, CmdArgs);
1395  break;
1396 
1397  case llvm::Triple::lanai:
1398  AddLanaiTargetArgs(Args, CmdArgs);
1399  break;
1400 
1401  case llvm::Triple::hexagon:
1402  AddHexagonTargetArgs(Args, CmdArgs);
1403  break;
1404 
1405  case llvm::Triple::wasm32:
1406  case llvm::Triple::wasm64:
1407  AddWebAssemblyTargetArgs(Args, CmdArgs);
1408  break;
1409  }
1410 }
1411 
1412 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1413  ArgStringList &CmdArgs) const {
1414  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1415 
1416  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1417  Args.hasArg(options::OPT_mkernel) ||
1418  Args.hasArg(options::OPT_fapple_kext))
1419  CmdArgs.push_back("-disable-red-zone");
1420 
1421  if (!Args.hasFlag(options::OPT_mimplicit_float,
1422  options::OPT_mno_implicit_float, true))
1423  CmdArgs.push_back("-no-implicit-float");
1424 
1425  const char *ABIName = nullptr;
1426  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1427  ABIName = A->getValue();
1428  else if (Triple.isOSDarwin())
1429  ABIName = "darwinpcs";
1430  else
1431  ABIName = "aapcs";
1432 
1433  CmdArgs.push_back("-target-abi");
1434  CmdArgs.push_back(ABIName);
1435 
1436  if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1437  options::OPT_mno_fix_cortex_a53_835769)) {
1438  CmdArgs.push_back("-mllvm");
1439  if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1440  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1441  else
1442  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1443  } else if (Triple.isAndroid()) {
1444  // Enabled A53 errata (835769) workaround by default on android
1445  CmdArgs.push_back("-mllvm");
1446  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1447  }
1448 
1449  // Forward the -mglobal-merge option for explicit control over the pass.
1450  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1451  options::OPT_mno_global_merge)) {
1452  CmdArgs.push_back("-mllvm");
1453  if (A->getOption().matches(options::OPT_mno_global_merge))
1454  CmdArgs.push_back("-aarch64-enable-global-merge=false");
1455  else
1456  CmdArgs.push_back("-aarch64-enable-global-merge=true");
1457  }
1458 }
1459 
1460 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1461  ArgStringList &CmdArgs) const {
1462  const Driver &D = getToolChain().getDriver();
1463  StringRef CPUName;
1464  StringRef ABIName;
1465  const llvm::Triple &Triple = getToolChain().getTriple();
1466  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1467 
1468  CmdArgs.push_back("-target-abi");
1469  CmdArgs.push_back(ABIName.data());
1470 
1471  mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1472  if (ABI == mips::FloatABI::Soft) {
1473  // Floating point operations and argument passing are soft.
1474  CmdArgs.push_back("-msoft-float");
1475  CmdArgs.push_back("-mfloat-abi");
1476  CmdArgs.push_back("soft");
1477  } else {
1478  // Floating point operations and argument passing are hard.
1479  assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1480  CmdArgs.push_back("-mfloat-abi");
1481  CmdArgs.push_back("hard");
1482  }
1483 
1484  if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1485  if (A->getOption().matches(options::OPT_mxgot)) {
1486  CmdArgs.push_back("-mllvm");
1487  CmdArgs.push_back("-mxgot");
1488  }
1489  }
1490 
1491  if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1492  options::OPT_mno_ldc1_sdc1)) {
1493  if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1494  CmdArgs.push_back("-mllvm");
1495  CmdArgs.push_back("-mno-ldc1-sdc1");
1496  }
1497  }
1498 
1499  if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1500  options::OPT_mno_check_zero_division)) {
1501  if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1502  CmdArgs.push_back("-mllvm");
1503  CmdArgs.push_back("-mno-check-zero-division");
1504  }
1505  }
1506 
1507  if (Arg *A = Args.getLastArg(options::OPT_G)) {
1508  StringRef v = A->getValue();
1509  CmdArgs.push_back("-mllvm");
1510  CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1511  A->claim();
1512  }
1513 
1514  Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1515  Arg *ABICalls =
1516  Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1517 
1518  // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1519  // -mgpopt is the default for static, -fno-pic environments but these two
1520  // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1521  // the only case where -mllvm -mgpopt is passed.
1522  // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1523  // passed explicitly when compiling something with -mabicalls
1524  // (implictly) in affect. Currently the warning is in the backend.
1525  //
1526  // When the ABI in use is N64, we also need to determine the PIC mode that
1527  // is in use, as -fno-pic for N64 implies -mno-abicalls.
1528  bool NoABICalls =
1529  ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1530 
1531  llvm::Reloc::Model RelocationModel;
1532  unsigned PICLevel;
1533  bool IsPIE;
1534  std::tie(RelocationModel, PICLevel, IsPIE) =
1535  ParsePICArgs(getToolChain(), Args);
1536 
1537  NoABICalls = NoABICalls ||
1538  (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1539 
1540  bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1541  // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1542  if (NoABICalls && (!GPOpt || WantGPOpt)) {
1543  CmdArgs.push_back("-mllvm");
1544  CmdArgs.push_back("-mgpopt");
1545 
1546  Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1547  options::OPT_mno_local_sdata);
1548  Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1549  options::OPT_mno_extern_sdata);
1550  Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1551  options::OPT_mno_embedded_data);
1552  if (LocalSData) {
1553  CmdArgs.push_back("-mllvm");
1554  if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1555  CmdArgs.push_back("-mlocal-sdata=1");
1556  } else {
1557  CmdArgs.push_back("-mlocal-sdata=0");
1558  }
1559  LocalSData->claim();
1560  }
1561 
1562  if (ExternSData) {
1563  CmdArgs.push_back("-mllvm");
1564  if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1565  CmdArgs.push_back("-mextern-sdata=1");
1566  } else {
1567  CmdArgs.push_back("-mextern-sdata=0");
1568  }
1569  ExternSData->claim();
1570  }
1571 
1572  if (EmbeddedData) {
1573  CmdArgs.push_back("-mllvm");
1574  if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1575  CmdArgs.push_back("-membedded-data=1");
1576  } else {
1577  CmdArgs.push_back("-membedded-data=0");
1578  }
1579  EmbeddedData->claim();
1580  }
1581 
1582  } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1583  D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1584 
1585  if (GPOpt)
1586  GPOpt->claim();
1587 
1588  if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1589  StringRef Val = StringRef(A->getValue());
1590  if (mips::hasCompactBranches(CPUName)) {
1591  if (Val == "never" || Val == "always" || Val == "optimal") {
1592  CmdArgs.push_back("-mllvm");
1593  CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1594  } else
1595  D.Diag(diag::err_drv_unsupported_option_argument)
1596  << A->getOption().getName() << Val;
1597  } else
1598  D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1599  }
1600 }
1601 
1602 void Clang::AddPPCTargetArgs(const ArgList &Args,
1603  ArgStringList &CmdArgs) const {
1604  // Select the ABI to use.
1605  const char *ABIName = nullptr;
1606  if (getToolChain().getTriple().isOSLinux())
1607  switch (getToolChain().getArch()) {
1608  case llvm::Triple::ppc64: {
1609  // When targeting a processor that supports QPX, or if QPX is
1610  // specifically enabled, default to using the ABI that supports QPX (so
1611  // long as it is not specifically disabled).
1612  bool HasQPX = false;
1613  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1614  HasQPX = A->getValue() == StringRef("a2q");
1615  HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1616  if (HasQPX) {
1617  ABIName = "elfv1-qpx";
1618  break;
1619  }
1620 
1621  ABIName = "elfv1";
1622  break;
1623  }
1624  case llvm::Triple::ppc64le:
1625  ABIName = "elfv2";
1626  break;
1627  default:
1628  break;
1629  }
1630 
1631  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1632  // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1633  // the option if given as we don't have backend support for any targets
1634  // that don't use the altivec abi.
1635  if (StringRef(A->getValue()) != "altivec")
1636  ABIName = A->getValue();
1637 
1639  ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1640 
1641  if (FloatABI == ppc::FloatABI::Soft) {
1642  // Floating point operations and argument passing are soft.
1643  CmdArgs.push_back("-msoft-float");
1644  CmdArgs.push_back("-mfloat-abi");
1645  CmdArgs.push_back("soft");
1646  } else {
1647  // Floating point operations and argument passing are hard.
1648  assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1649  CmdArgs.push_back("-mfloat-abi");
1650  CmdArgs.push_back("hard");
1651  }
1652 
1653  if (ABIName) {
1654  CmdArgs.push_back("-target-abi");
1655  CmdArgs.push_back(ABIName);
1656  }
1657 }
1658 
1659 void Clang::AddRISCVTargetArgs(const ArgList &Args,
1660  ArgStringList &CmdArgs) const {
1661  // FIXME: currently defaults to the soft-float ABIs. Will need to be
1662  // expanded to select ilp32f, ilp32d, lp64f, lp64d when appropriate.
1663  const char *ABIName = nullptr;
1664  const llvm::Triple &Triple = getToolChain().getTriple();
1665  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1666  ABIName = A->getValue();
1667  else if (Triple.getArch() == llvm::Triple::riscv32)
1668  ABIName = "ilp32";
1669  else if (Triple.getArch() == llvm::Triple::riscv64)
1670  ABIName = "lp64";
1671  else
1672  llvm_unreachable("Unexpected triple!");
1673 
1674  CmdArgs.push_back("-target-abi");
1675  CmdArgs.push_back(ABIName);
1676 }
1677 
1678 void Clang::AddSparcTargetArgs(const ArgList &Args,
1679  ArgStringList &CmdArgs) const {
1681  sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1682 
1683  if (FloatABI == sparc::FloatABI::Soft) {
1684  // Floating point operations and argument passing are soft.
1685  CmdArgs.push_back("-msoft-float");
1686  CmdArgs.push_back("-mfloat-abi");
1687  CmdArgs.push_back("soft");
1688  } else {
1689  // Floating point operations and argument passing are hard.
1690  assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1691  CmdArgs.push_back("-mfloat-abi");
1692  CmdArgs.push_back("hard");
1693  }
1694 }
1695 
1696 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1697  ArgStringList &CmdArgs) const {
1698  if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1699  CmdArgs.push_back("-mbackchain");
1700 }
1701 
1702 void Clang::AddX86TargetArgs(const ArgList &Args,
1703  ArgStringList &CmdArgs) const {
1704  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1705  Args.hasArg(options::OPT_mkernel) ||
1706  Args.hasArg(options::OPT_fapple_kext))
1707  CmdArgs.push_back("-disable-red-zone");
1708 
1709  // Default to avoid implicit floating-point for kernel/kext code, but allow
1710  // that to be overridden with -mno-soft-float.
1711  bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1712  Args.hasArg(options::OPT_fapple_kext));
1713  if (Arg *A = Args.getLastArg(
1714  options::OPT_msoft_float, options::OPT_mno_soft_float,
1715  options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1716  const Option &O = A->getOption();
1717  NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1718  O.matches(options::OPT_msoft_float));
1719  }
1720  if (NoImplicitFloat)
1721  CmdArgs.push_back("-no-implicit-float");
1722 
1723  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1724  StringRef Value = A->getValue();
1725  if (Value == "intel" || Value == "att") {
1726  CmdArgs.push_back("-mllvm");
1727  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1728  } else {
1729  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1730  << A->getOption().getName() << Value;
1731  }
1732  } else if (getToolChain().getDriver().IsCLMode()) {
1733  CmdArgs.push_back("-mllvm");
1734  CmdArgs.push_back("-x86-asm-syntax=intel");
1735  }
1736 
1737  // Set flags to support MCU ABI.
1738  if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1739  CmdArgs.push_back("-mfloat-abi");
1740  CmdArgs.push_back("soft");
1741  CmdArgs.push_back("-mstack-alignment=4");
1742  }
1743 }
1744 
1745 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1746  ArgStringList &CmdArgs) const {
1747  CmdArgs.push_back("-mqdsp6-compat");
1748  CmdArgs.push_back("-Wreturn-type");
1749 
1751  CmdArgs.push_back("-mllvm");
1752  CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1753  Twine(G.getValue())));
1754  }
1755 
1756  if (!Args.hasArg(options::OPT_fno_short_enums))
1757  CmdArgs.push_back("-fshort-enums");
1758  if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1759  CmdArgs.push_back("-mllvm");
1760  CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1761  }
1762  CmdArgs.push_back("-mllvm");
1763  CmdArgs.push_back("-machine-sink-split=0");
1764 }
1765 
1766 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1767  ArgStringList &CmdArgs) const {
1768  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1769  StringRef CPUName = A->getValue();
1770 
1771  CmdArgs.push_back("-target-cpu");
1772  CmdArgs.push_back(Args.MakeArgString(CPUName));
1773  }
1774  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1775  StringRef Value = A->getValue();
1776  // Only support mregparm=4 to support old usage. Report error for all other
1777  // cases.
1778  int Mregparm;
1779  if (Value.getAsInteger(10, Mregparm)) {
1780  if (Mregparm != 4) {
1781  getToolChain().getDriver().Diag(
1782  diag::err_drv_unsupported_option_argument)
1783  << A->getOption().getName() << Value;
1784  }
1785  }
1786  }
1787 }
1788 
1789 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1790  ArgStringList &CmdArgs) const {
1791  // Default to "hidden" visibility.
1792  if (!Args.hasArg(options::OPT_fvisibility_EQ,
1793  options::OPT_fvisibility_ms_compat)) {
1794  CmdArgs.push_back("-fvisibility");
1795  CmdArgs.push_back("hidden");
1796  }
1797 }
1798 
1799 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1800  StringRef Target, const InputInfo &Output,
1801  const InputInfo &Input, const ArgList &Args) const {
1802  // If this is a dry run, do not create the compilation database file.
1803  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1804  return;
1805 
1806  using llvm::yaml::escape;
1807  const Driver &D = getToolChain().getDriver();
1808 
1809  if (!CompilationDatabase) {
1810  std::error_code EC;
1811  auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
1812  if (EC) {
1813  D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1814  << EC.message();
1815  return;
1816  }
1817  CompilationDatabase = std::move(File);
1818  }
1819  auto &CDB = *CompilationDatabase;
1820  SmallString<128> Buf;
1821  if (llvm::sys::fs::current_path(Buf))
1822  Buf = ".";
1823  CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
1824  CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1825  CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1826  CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1827  Buf = "-x";
1828  Buf += types::getTypeName(Input.getType());
1829  CDB << ", \"" << escape(Buf) << "\"";
1830  if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1831  Buf = "--sysroot=";
1832  Buf += D.SysRoot;
1833  CDB << ", \"" << escape(Buf) << "\"";
1834  }
1835  CDB << ", \"" << escape(Input.getFilename()) << "\"";
1836  for (auto &A: Args) {
1837  auto &O = A->getOption();
1838  // Skip language selection, which is positional.
1839  if (O.getID() == options::OPT_x)
1840  continue;
1841  // Skip writing dependency output and the compilation database itself.
1842  if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1843  continue;
1844  // Skip inputs.
1845  if (O.getKind() == Option::InputClass)
1846  continue;
1847  // All other arguments are quoted and appended.
1848  ArgStringList ASL;
1849  A->render(Args, ASL);
1850  for (auto &it: ASL)
1851  CDB << ", \"" << escape(it) << "\"";
1852  }
1853  Buf = "--target=";
1854  Buf += Target;
1855  CDB << ", \"" << escape(Buf) << "\"]},\n";
1856 }
1857 
1859  const ArgList &Args,
1860  ArgStringList &CmdArgs,
1861  const Driver &D) {
1862  if (UseRelaxAll(C, Args))
1863  CmdArgs.push_back("-mrelax-all");
1864 
1865  // Only default to -mincremental-linker-compatible if we think we are
1866  // targeting the MSVC linker.
1867  bool DefaultIncrementalLinkerCompatible =
1868  C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
1869  if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
1870  options::OPT_mno_incremental_linker_compatible,
1871  DefaultIncrementalLinkerCompatible))
1872  CmdArgs.push_back("-mincremental-linker-compatible");
1873 
1874  switch (C.getDefaultToolChain().getArch()) {
1875  case llvm::Triple::arm:
1876  case llvm::Triple::armeb:
1877  case llvm::Triple::thumb:
1878  case llvm::Triple::thumbeb:
1879  if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
1880  StringRef Value = A->getValue();
1881  if (Value == "always" || Value == "never" || Value == "arm" ||
1882  Value == "thumb") {
1883  CmdArgs.push_back("-mllvm");
1884  CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
1885  } else {
1886  D.Diag(diag::err_drv_unsupported_option_argument)
1887  << A->getOption().getName() << Value;
1888  }
1889  }
1890  break;
1891  default:
1892  break;
1893  }
1894 
1895  // When passing -I arguments to the assembler we sometimes need to
1896  // unconditionally take the next argument. For example, when parsing
1897  // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
1898  // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
1899  // arg after parsing the '-I' arg.
1900  bool TakeNextArg = false;
1901 
1902  bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
1903  const char *MipsTargetFeature = nullptr;
1904  for (const Arg *A :
1905  Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
1906  A->claim();
1907 
1908  for (StringRef Value : A->getValues()) {
1909  if (TakeNextArg) {
1910  CmdArgs.push_back(Value.data());
1911  TakeNextArg = false;
1912  continue;
1913  }
1914 
1915  if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
1916  Value == "-mbig-obj")
1917  continue; // LLVM handles bigobj automatically
1918 
1919  switch (C.getDefaultToolChain().getArch()) {
1920  default:
1921  break;
1922  case llvm::Triple::thumb:
1923  case llvm::Triple::thumbeb:
1924  case llvm::Triple::arm:
1925  case llvm::Triple::armeb:
1926  if (Value == "-mthumb")
1927  // -mthumb has already been processed in ComputeLLVMTriple()
1928  // recognize but skip over here.
1929  continue;
1930  break;
1931  case llvm::Triple::mips:
1932  case llvm::Triple::mipsel:
1933  case llvm::Triple::mips64:
1934  case llvm::Triple::mips64el:
1935  if (Value == "--trap") {
1936  CmdArgs.push_back("-target-feature");
1937  CmdArgs.push_back("+use-tcc-in-div");
1938  continue;
1939  }
1940  if (Value == "--break") {
1941  CmdArgs.push_back("-target-feature");
1942  CmdArgs.push_back("-use-tcc-in-div");
1943  continue;
1944  }
1945  if (Value.startswith("-msoft-float")) {
1946  CmdArgs.push_back("-target-feature");
1947  CmdArgs.push_back("+soft-float");
1948  continue;
1949  }
1950  if (Value.startswith("-mhard-float")) {
1951  CmdArgs.push_back("-target-feature");
1952  CmdArgs.push_back("-soft-float");
1953  continue;
1954  }
1955 
1956  MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
1957  .Case("-mips1", "+mips1")
1958  .Case("-mips2", "+mips2")
1959  .Case("-mips3", "+mips3")
1960  .Case("-mips4", "+mips4")
1961  .Case("-mips5", "+mips5")
1962  .Case("-mips32", "+mips32")
1963  .Case("-mips32r2", "+mips32r2")
1964  .Case("-mips32r3", "+mips32r3")
1965  .Case("-mips32r5", "+mips32r5")
1966  .Case("-mips32r6", "+mips32r6")
1967  .Case("-mips64", "+mips64")
1968  .Case("-mips64r2", "+mips64r2")
1969  .Case("-mips64r3", "+mips64r3")
1970  .Case("-mips64r5", "+mips64r5")
1971  .Case("-mips64r6", "+mips64r6")
1972  .Default(nullptr);
1973  if (MipsTargetFeature)
1974  continue;
1975  }
1976 
1977  if (Value == "-force_cpusubtype_ALL") {
1978  // Do nothing, this is the default and we don't support anything else.
1979  } else if (Value == "-L") {
1980  CmdArgs.push_back("-msave-temp-labels");
1981  } else if (Value == "--fatal-warnings") {
1982  CmdArgs.push_back("-massembler-fatal-warnings");
1983  } else if (Value == "--noexecstack") {
1984  CmdArgs.push_back("-mnoexecstack");
1985  } else if (Value.startswith("-compress-debug-sections") ||
1986  Value.startswith("--compress-debug-sections") ||
1987  Value == "-nocompress-debug-sections" ||
1988  Value == "--nocompress-debug-sections") {
1989  CmdArgs.push_back(Value.data());
1990  } else if (Value == "-mrelax-relocations=yes" ||
1991  Value == "--mrelax-relocations=yes") {
1992  UseRelaxRelocations = true;
1993  } else if (Value == "-mrelax-relocations=no" ||
1994  Value == "--mrelax-relocations=no") {
1995  UseRelaxRelocations = false;
1996  } else if (Value.startswith("-I")) {
1997  CmdArgs.push_back(Value.data());
1998  // We need to consume the next argument if the current arg is a plain
1999  // -I. The next arg will be the include directory.
2000  if (Value == "-I")
2001  TakeNextArg = true;
2002  } else if (Value.startswith("-gdwarf-")) {
2003  // "-gdwarf-N" options are not cc1as options.
2004  unsigned DwarfVersion = DwarfVersionNum(Value);
2005  if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2006  CmdArgs.push_back(Value.data());
2007  } else {
2008  RenderDebugEnablingArgs(Args, CmdArgs,
2010  DwarfVersion, llvm::DebuggerKind::Default);
2011  }
2012  } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2013  Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2014  // Do nothing, we'll validate it later.
2015  } else if (Value == "-defsym") {
2016  if (A->getNumValues() != 2) {
2017  D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2018  break;
2019  }
2020  const char *S = A->getValue(1);
2021  auto Pair = StringRef(S).split('=');
2022  auto Sym = Pair.first;
2023  auto SVal = Pair.second;
2024 
2025  if (Sym.empty() || SVal.empty()) {
2026  D.Diag(diag::err_drv_defsym_invalid_format) << S;
2027  break;
2028  }
2029  int64_t IVal;
2030  if (SVal.getAsInteger(0, IVal)) {
2031  D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2032  break;
2033  }
2034  CmdArgs.push_back(Value.data());
2035  TakeNextArg = true;
2036  } else {
2037  D.Diag(diag::err_drv_unsupported_option_argument)
2038  << A->getOption().getName() << Value;
2039  }
2040  }
2041  }
2042  if (UseRelaxRelocations)
2043  CmdArgs.push_back("--mrelax-relocations");
2044  if (MipsTargetFeature != nullptr) {
2045  CmdArgs.push_back("-target-feature");
2046  CmdArgs.push_back(MipsTargetFeature);
2047  }
2048 }
2049 
2050 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2051  bool OFastEnabled, const ArgList &Args,
2052  ArgStringList &CmdArgs) {
2053  // Handle various floating point optimization flags, mapping them to the
2054  // appropriate LLVM code generation flags. This is complicated by several
2055  // "umbrella" flags, so we do this by stepping through the flags incrementally
2056  // adjusting what we think is enabled/disabled, then at the end setting the
2057  // LLVM flags based on the final state.
2058  bool HonorINFs = true;
2059  bool HonorNaNs = true;
2060  // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2061  bool MathErrno = TC.IsMathErrnoDefault();
2062  bool AssociativeMath = false;
2063  bool ReciprocalMath = false;
2064  bool SignedZeros = true;
2065  bool TrappingMath = true;
2066  StringRef DenormalFPMath = "";
2067  StringRef FPContract = "";
2068 
2069  for (const Arg *A : Args) {
2070  switch (A->getOption().getID()) {
2071  // If this isn't an FP option skip the claim below
2072  default: continue;
2073 
2074  // Options controlling individual features
2075  case options::OPT_fhonor_infinities: HonorINFs = true; break;
2076  case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2077  case options::OPT_fhonor_nans: HonorNaNs = true; break;
2078  case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2079  case options::OPT_fmath_errno: MathErrno = true; break;
2080  case options::OPT_fno_math_errno: MathErrno = false; break;
2081  case options::OPT_fassociative_math: AssociativeMath = true; break;
2082  case options::OPT_fno_associative_math: AssociativeMath = false; break;
2083  case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2084  case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2085  case options::OPT_fsigned_zeros: SignedZeros = true; break;
2086  case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2087  case options::OPT_ftrapping_math: TrappingMath = true; break;
2088  case options::OPT_fno_trapping_math: TrappingMath = false; break;
2089 
2090  case options::OPT_fdenormal_fp_math_EQ:
2091  DenormalFPMath = A->getValue();
2092  break;
2093 
2094  // Validate and pass through -fp-contract option.
2095  case options::OPT_ffp_contract: {
2096  StringRef Val = A->getValue();
2097  if (Val == "fast" || Val == "on" || Val == "off")
2098  FPContract = Val;
2099  else
2100  D.Diag(diag::err_drv_unsupported_option_argument)
2101  << A->getOption().getName() << Val;
2102  break;
2103  }
2104 
2105  case options::OPT_ffinite_math_only:
2106  HonorINFs = false;
2107  HonorNaNs = false;
2108  break;
2109  case options::OPT_fno_finite_math_only:
2110  HonorINFs = true;
2111  HonorNaNs = true;
2112  break;
2113 
2114  case options::OPT_funsafe_math_optimizations:
2115  AssociativeMath = true;
2116  ReciprocalMath = true;
2117  SignedZeros = false;
2118  TrappingMath = false;
2119  break;
2120  case options::OPT_fno_unsafe_math_optimizations:
2121  AssociativeMath = false;
2122  ReciprocalMath = false;
2123  SignedZeros = true;
2124  TrappingMath = true;
2125  // -fno_unsafe_math_optimizations restores default denormal handling
2126  DenormalFPMath = "";
2127  break;
2128 
2129  case options::OPT_Ofast:
2130  // If -Ofast is the optimization level, then -ffast-math should be enabled
2131  if (!OFastEnabled)
2132  continue;
2133  LLVM_FALLTHROUGH;
2134  case options::OPT_ffast_math:
2135  HonorINFs = false;
2136  HonorNaNs = false;
2137  MathErrno = false;
2138  AssociativeMath = true;
2139  ReciprocalMath = true;
2140  SignedZeros = false;
2141  TrappingMath = false;
2142  // If fast-math is set then set the fp-contract mode to fast.
2143  FPContract = "fast";
2144  break;
2145  case options::OPT_fno_fast_math:
2146  HonorINFs = true;
2147  HonorNaNs = true;
2148  // Turning on -ffast-math (with either flag) removes the need for
2149  // MathErrno. However, turning *off* -ffast-math merely restores the
2150  // toolchain default (which may be false).
2151  MathErrno = TC.IsMathErrnoDefault();
2152  AssociativeMath = false;
2153  ReciprocalMath = false;
2154  SignedZeros = true;
2155  TrappingMath = true;
2156  // -fno_fast_math restores default denormal and fpcontract handling
2157  DenormalFPMath = "";
2158  FPContract = "";
2159  break;
2160  }
2161 
2162  // If we handled this option claim it
2163  A->claim();
2164  }
2165 
2166  if (!HonorINFs)
2167  CmdArgs.push_back("-menable-no-infs");
2168 
2169  if (!HonorNaNs)
2170  CmdArgs.push_back("-menable-no-nans");
2171 
2172  if (MathErrno)
2173  CmdArgs.push_back("-fmath-errno");
2174 
2175  if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2176  !TrappingMath)
2177  CmdArgs.push_back("-menable-unsafe-fp-math");
2178 
2179  if (!SignedZeros)
2180  CmdArgs.push_back("-fno-signed-zeros");
2181 
2182  if (AssociativeMath && !SignedZeros && !TrappingMath)
2183  CmdArgs.push_back("-mreassociate");
2184 
2185  if (ReciprocalMath)
2186  CmdArgs.push_back("-freciprocal-math");
2187 
2188  if (!TrappingMath)
2189  CmdArgs.push_back("-fno-trapping-math");
2190 
2191  if (!DenormalFPMath.empty())
2192  CmdArgs.push_back(
2193  Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2194 
2195  if (!FPContract.empty())
2196  CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2197 
2198  ParseMRecip(D, Args, CmdArgs);
2199 
2200  // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2201  // individual features enabled by -ffast-math instead of the option itself as
2202  // that's consistent with gcc's behaviour.
2203  if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2204  ReciprocalMath && !SignedZeros && !TrappingMath)
2205  CmdArgs.push_back("-ffast-math");
2206 
2207  // Handle __FINITE_MATH_ONLY__ similarly.
2208  if (!HonorINFs && !HonorNaNs)
2209  CmdArgs.push_back("-ffinite-math-only");
2210 
2211  if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2212  CmdArgs.push_back("-mfpmath");
2213  CmdArgs.push_back(A->getValue());
2214  }
2215 
2216  // Disable a codegen optimization for floating-point casts.
2217  if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2218  options::OPT_fstrict_float_cast_overflow, false))
2219  CmdArgs.push_back("-fno-strict-float-cast-overflow");
2220 }
2221 
2222 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2223  const llvm::Triple &Triple,
2224  const InputInfo &Input) {
2225  // Enable region store model by default.
2226  CmdArgs.push_back("-analyzer-store=region");
2227 
2228  // Treat blocks as analysis entry points.
2229  CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2230 
2231  CmdArgs.push_back("-analyzer-eagerly-assume");
2232 
2233  // Add default argument set.
2234  if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2235  CmdArgs.push_back("-analyzer-checker=core");
2236  CmdArgs.push_back("-analyzer-checker=apiModeling");
2237 
2238  if (!Triple.isWindowsMSVCEnvironment()) {
2239  CmdArgs.push_back("-analyzer-checker=unix");
2240  } else {
2241  // Enable "unix" checkers that also work on Windows.
2242  CmdArgs.push_back("-analyzer-checker=unix.API");
2243  CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2244  CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2245  CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2246  CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2247  CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2248  }
2249 
2250  // Disable some unix checkers for PS4.
2251  if (Triple.isPS4CPU()) {
2252  CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2253  CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2254  }
2255 
2256  if (Triple.isOSDarwin())
2257  CmdArgs.push_back("-analyzer-checker=osx");
2258 
2259  CmdArgs.push_back("-analyzer-checker=deadcode");
2260 
2261  if (types::isCXX(Input.getType()))
2262  CmdArgs.push_back("-analyzer-checker=cplusplus");
2263 
2264  if (!Triple.isPS4CPU()) {
2265  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2266  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2267  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2268  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2269  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2270  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2271  }
2272 
2273  // Default nullability checks.
2274  CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2275  CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2276  }
2277 
2278  // Set the output format. The default is plist, for (lame) historical reasons.
2279  CmdArgs.push_back("-analyzer-output");
2280  if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2281  CmdArgs.push_back(A->getValue());
2282  else
2283  CmdArgs.push_back("plist");
2284 
2285  // Disable the presentation of standard compiler warnings when using
2286  // --analyze. We only want to show static analyzer diagnostics or frontend
2287  // errors.
2288  CmdArgs.push_back("-w");
2289 
2290  // Add -Xanalyzer arguments when running as analyzer.
2291  Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2292 }
2293 
2294 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2295  ArgStringList &CmdArgs, bool KernelOrKext) {
2296  const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2297 
2298  // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2299  // doesn't even have a stack!
2300  if (EffectiveTriple.isNVPTX())
2301  return;
2302 
2303  // -stack-protector=0 is default.
2304  unsigned StackProtectorLevel = 0;
2305  unsigned DefaultStackProtectorLevel =
2306  TC.GetDefaultStackProtectorLevel(KernelOrKext);
2307 
2308  if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2309  options::OPT_fstack_protector_all,
2310  options::OPT_fstack_protector_strong,
2311  options::OPT_fstack_protector)) {
2312  if (A->getOption().matches(options::OPT_fstack_protector))
2313  StackProtectorLevel =
2314  std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2315  else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2316  StackProtectorLevel = LangOptions::SSPStrong;
2317  else if (A->getOption().matches(options::OPT_fstack_protector_all))
2318  StackProtectorLevel = LangOptions::SSPReq;
2319  } else {
2320  StackProtectorLevel = DefaultStackProtectorLevel;
2321  }
2322 
2323  if (StackProtectorLevel) {
2324  CmdArgs.push_back("-stack-protector");
2325  CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2326  }
2327 
2328  // --param ssp-buffer-size=
2329  for (const Arg *A : Args.filtered(options::OPT__param)) {
2330  StringRef Str(A->getValue());
2331  if (Str.startswith("ssp-buffer-size=")) {
2332  if (StackProtectorLevel) {
2333  CmdArgs.push_back("-stack-protector-buffer-size");
2334  // FIXME: Verify the argument is a valid integer.
2335  CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2336  }
2337  A->claim();
2338  }
2339  }
2340 }
2341 
2342 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2343  const unsigned ForwardedArguments[] = {
2344  options::OPT_cl_opt_disable,
2345  options::OPT_cl_strict_aliasing,
2346  options::OPT_cl_single_precision_constant,
2347  options::OPT_cl_finite_math_only,
2348  options::OPT_cl_kernel_arg_info,
2349  options::OPT_cl_unsafe_math_optimizations,
2350  options::OPT_cl_fast_relaxed_math,
2351  options::OPT_cl_mad_enable,
2352  options::OPT_cl_no_signed_zeros,
2353  options::OPT_cl_denorms_are_zero,
2354  options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2355  options::OPT_cl_uniform_work_group_size
2356  };
2357 
2358  if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2359  std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2360  CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2361  }
2362 
2363  for (const auto &Arg : ForwardedArguments)
2364  if (const auto *A = Args.getLastArg(Arg))
2365  CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2366 }
2367 
2368 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2369  ArgStringList &CmdArgs) {
2370  bool ARCMTEnabled = false;
2371  if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2372  if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2373  options::OPT_ccc_arcmt_modify,
2374  options::OPT_ccc_arcmt_migrate)) {
2375  ARCMTEnabled = true;
2376  switch (A->getOption().getID()) {
2377  default: llvm_unreachable("missed a case");
2378  case options::OPT_ccc_arcmt_check:
2379  CmdArgs.push_back("-arcmt-check");
2380  break;
2381  case options::OPT_ccc_arcmt_modify:
2382  CmdArgs.push_back("-arcmt-modify");
2383  break;
2384  case options::OPT_ccc_arcmt_migrate:
2385  CmdArgs.push_back("-arcmt-migrate");
2386  CmdArgs.push_back("-mt-migrate-directory");
2387  CmdArgs.push_back(A->getValue());
2388 
2389  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2390  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2391  break;
2392  }
2393  }
2394  } else {
2395  Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2396  Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2397  Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2398  }
2399 
2400  if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2401  if (ARCMTEnabled)
2402  D.Diag(diag::err_drv_argument_not_allowed_with)
2403  << A->getAsString(Args) << "-ccc-arcmt-migrate";
2404 
2405  CmdArgs.push_back("-mt-migrate-directory");
2406  CmdArgs.push_back(A->getValue());
2407 
2408  if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2409  options::OPT_objcmt_migrate_subscripting,
2410  options::OPT_objcmt_migrate_property)) {
2411  // None specified, means enable them all.
2412  CmdArgs.push_back("-objcmt-migrate-literals");
2413  CmdArgs.push_back("-objcmt-migrate-subscripting");
2414  CmdArgs.push_back("-objcmt-migrate-property");
2415  } else {
2416  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2417  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2418  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2419  }
2420  } else {
2421  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2422  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2423  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2424  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2425  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2426  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2427  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2428  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2429  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2430  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2431  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2432  Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2433  Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2434  Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2435  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2436  Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2437  }
2438 }
2439 
2440 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2441  const ArgList &Args, ArgStringList &CmdArgs) {
2442  // -fbuiltin is default unless -mkernel is used.
2443  bool UseBuiltins =
2444  Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2445  !Args.hasArg(options::OPT_mkernel));
2446  if (!UseBuiltins)
2447  CmdArgs.push_back("-fno-builtin");
2448 
2449  // -ffreestanding implies -fno-builtin.
2450  if (Args.hasArg(options::OPT_ffreestanding))
2451  UseBuiltins = false;
2452 
2453  // Process the -fno-builtin-* options.
2454  for (const auto &Arg : Args) {
2455  const Option &O = Arg->getOption();
2456  if (!O.matches(options::OPT_fno_builtin_))
2457  continue;
2458 
2459  Arg->claim();
2460 
2461  // If -fno-builtin is specified, then there's no need to pass the option to
2462  // the frontend.
2463  if (!UseBuiltins)
2464  continue;
2465 
2466  StringRef FuncName = Arg->getValue();
2467  CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2468  }
2469 
2470  // le32-specific flags:
2471  // -fno-math-builtin: clang should not convert math builtins to intrinsics
2472  // by default.
2473  if (TC.getArch() == llvm::Triple::le32)
2474  CmdArgs.push_back("-fno-math-builtin");
2475 }
2476 
2478  llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Result);
2479  llvm::sys::path::append(Result, "org.llvm.clang.");
2480  appendUserToPath(Result);
2481  llvm::sys::path::append(Result, "ModuleCache");
2482 }
2483 
2484 static void RenderModulesOptions(Compilation &C, const Driver &D,
2485  const ArgList &Args, const InputInfo &Input,
2486  const InputInfo &Output,
2487  ArgStringList &CmdArgs, bool &HaveModules) {
2488  // -fmodules enables the use of precompiled modules (off by default).
2489  // Users can pass -fno-cxx-modules to turn off modules support for
2490  // C++/Objective-C++ programs.
2491  bool HaveClangModules = false;
2492  if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2493  bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2494  options::OPT_fno_cxx_modules, true);
2495  if (AllowedInCXX || !types::isCXX(Input.getType())) {
2496  CmdArgs.push_back("-fmodules");
2497  HaveClangModules = true;
2498  }
2499  }
2500 
2501  HaveModules = HaveClangModules;
2502  if (Args.hasArg(options::OPT_fmodules_ts)) {
2503  CmdArgs.push_back("-fmodules-ts");
2504  HaveModules = true;
2505  }
2506 
2507  // -fmodule-maps enables implicit reading of module map files. By default,
2508  // this is enabled if we are using Clang's flavor of precompiled modules.
2509  if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2510  options::OPT_fno_implicit_module_maps, HaveClangModules))
2511  CmdArgs.push_back("-fimplicit-module-maps");
2512 
2513  // -fmodules-decluse checks that modules used are declared so (off by default)
2514  if (Args.hasFlag(options::OPT_fmodules_decluse,
2515  options::OPT_fno_modules_decluse, false))
2516  CmdArgs.push_back("-fmodules-decluse");
2517 
2518  // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2519  // all #included headers are part of modules.
2520  if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2521  options::OPT_fno_modules_strict_decluse, false))
2522  CmdArgs.push_back("-fmodules-strict-decluse");
2523 
2524  // -fno-implicit-modules turns off implicitly compiling modules on demand.
2525  bool ImplicitModules = false;
2526  if (!Args.hasFlag(options::OPT_fimplicit_modules,
2527  options::OPT_fno_implicit_modules, HaveClangModules)) {
2528  if (HaveModules)
2529  CmdArgs.push_back("-fno-implicit-modules");
2530  } else if (HaveModules) {
2531  ImplicitModules = true;
2532  // -fmodule-cache-path specifies where our implicitly-built module files
2533  // should be written.
2534  SmallString<128> Path;
2535  if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2536  Path = A->getValue();
2537 
2538  if (C.isForDiagnostics()) {
2539  // When generating crash reports, we want to emit the modules along with
2540  // the reproduction sources, so we ignore any provided module path.
2541  Path = Output.getFilename();
2542  llvm::sys::path::replace_extension(Path, ".cache");
2543  llvm::sys::path::append(Path, "modules");
2544  } else if (Path.empty()) {
2545  // No module path was provided: use the default.
2547  }
2548 
2549  const char Arg[] = "-fmodules-cache-path=";
2550  Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2551  CmdArgs.push_back(Args.MakeArgString(Path));
2552  }
2553 
2554  if (HaveModules) {
2555  // -fprebuilt-module-path specifies where to load the prebuilt module files.
2556  for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2557  CmdArgs.push_back(Args.MakeArgString(
2558  std::string("-fprebuilt-module-path=") + A->getValue()));
2559  A->claim();
2560  }
2561  }
2562 
2563  // -fmodule-name specifies the module that is currently being built (or
2564  // used for header checking by -fmodule-maps).
2565  Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2566 
2567  // -fmodule-map-file can be used to specify files containing module
2568  // definitions.
2569  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2570 
2571  // -fbuiltin-module-map can be used to load the clang
2572  // builtin headers modulemap file.
2573  if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2574  SmallString<128> BuiltinModuleMap(D.ResourceDir);
2575  llvm::sys::path::append(BuiltinModuleMap, "include");
2576  llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2577  if (llvm::sys::fs::exists(BuiltinModuleMap))
2578  CmdArgs.push_back(
2579  Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2580  }
2581 
2582  // The -fmodule-file=<name>=<file> form specifies the mapping of module
2583  // names to precompiled module files (the module is loaded only if used).
2584  // The -fmodule-file=<file> form can be used to unconditionally load
2585  // precompiled module files (whether used or not).
2586  if (HaveModules)
2587  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2588  else
2589  Args.ClaimAllArgs(options::OPT_fmodule_file);
2590 
2591  // When building modules and generating crashdumps, we need to dump a module
2592  // dependency VFS alongside the output.
2593  if (HaveClangModules && C.isForDiagnostics()) {
2594  SmallString<128> VFSDir(Output.getFilename());
2595  llvm::sys::path::replace_extension(VFSDir, ".cache");
2596  // Add the cache directory as a temp so the crash diagnostics pick it up.
2597  C.addTempFile(Args.MakeArgString(VFSDir));
2598 
2599  llvm::sys::path::append(VFSDir, "vfs");
2600  CmdArgs.push_back("-module-dependency-dir");
2601  CmdArgs.push_back(Args.MakeArgString(VFSDir));
2602  }
2603 
2604  if (HaveClangModules)
2605  Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2606 
2607  // Pass through all -fmodules-ignore-macro arguments.
2608  Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2609  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2610  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2611 
2612  Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2613 
2614  if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2615  if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2616  D.Diag(diag::err_drv_argument_not_allowed_with)
2617  << A->getAsString(Args) << "-fbuild-session-timestamp";
2618 
2619  llvm::sys::fs::file_status Status;
2620  if (llvm::sys::fs::status(A->getValue(), Status))
2621  D.Diag(diag::err_drv_no_such_file) << A->getValue();
2622  CmdArgs.push_back(
2623  Args.MakeArgString("-fbuild-session-timestamp=" +
2624  Twine((uint64_t)Status.getLastModificationTime()
2625  .time_since_epoch()
2626  .count())));
2627  }
2628 
2629  if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2630  if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2631  options::OPT_fbuild_session_file))
2632  D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2633 
2634  Args.AddLastArg(CmdArgs,
2635  options::OPT_fmodules_validate_once_per_build_session);
2636  }
2637 
2638  if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
2639  options::OPT_fno_modules_validate_system_headers,
2640  ImplicitModules))
2641  CmdArgs.push_back("-fmodules-validate-system-headers");
2642 
2643  Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2644 }
2645 
2646 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2647  ArgStringList &CmdArgs) {
2648  // -fsigned-char is default.
2649  if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2650  options::OPT_fno_signed_char,
2651  options::OPT_funsigned_char,
2652  options::OPT_fno_unsigned_char)) {
2653  if (A->getOption().matches(options::OPT_funsigned_char) ||
2654  A->getOption().matches(options::OPT_fno_signed_char)) {
2655  CmdArgs.push_back("-fno-signed-char");
2656  }
2657  } else if (!isSignedCharDefault(T)) {
2658  CmdArgs.push_back("-fno-signed-char");
2659  }
2660 
2661  if (Args.hasFlag(options::OPT_fchar8__t, options::OPT_fno_char8__t, false))
2662  CmdArgs.push_back("-fchar8_t");
2663 
2664  if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2665  options::OPT_fno_short_wchar)) {
2666  if (A->getOption().matches(options::OPT_fshort_wchar)) {
2667  CmdArgs.push_back("-fwchar-type=short");
2668  CmdArgs.push_back("-fno-signed-wchar");
2669  } else {
2670  bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2671  CmdArgs.push_back("-fwchar-type=int");
2672  if (IsARM && !(T.isOSWindows() || T.getOS() == llvm::Triple::NetBSD ||
2673  T.getOS() == llvm::Triple::OpenBSD))
2674  CmdArgs.push_back("-fno-signed-wchar");
2675  else
2676  CmdArgs.push_back("-fsigned-wchar");
2677  }
2678  }
2679 }
2680 
2681 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2682  const llvm::Triple &T, const ArgList &Args,
2683  ObjCRuntime &Runtime, bool InferCovariantReturns,
2684  const InputInfo &Input, ArgStringList &CmdArgs) {
2685  const llvm::Triple::ArchType Arch = TC.getArch();
2686 
2687  // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2688  // is the default. Except for deployment target of 10.5, next runtime is
2689  // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2690  if (Runtime.isNonFragile()) {
2691  if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2692  options::OPT_fno_objc_legacy_dispatch,
2693  Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2694  if (TC.UseObjCMixedDispatch())
2695  CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2696  else
2697  CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2698  }
2699  }
2700 
2701  // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2702  // to do Array/Dictionary subscripting by default.
2703  if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2704  !T.isMacOSXVersionLT(10, 7) &&
2705  Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2706  CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2707 
2708  // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2709  // NOTE: This logic is duplicated in ToolChains.cpp.
2710  if (isObjCAutoRefCount(Args)) {
2711  TC.CheckObjCARC();
2712 
2713  CmdArgs.push_back("-fobjc-arc");
2714 
2715  // FIXME: It seems like this entire block, and several around it should be
2716  // wrapped in isObjC, but for now we just use it here as this is where it
2717  // was being used previously.
2718  if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2719  if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2720  CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2721  else
2722  CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2723  }
2724 
2725  // Allow the user to enable full exceptions code emission.
2726  // We default off for Objective-C, on for Objective-C++.
2727  if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2728  options::OPT_fno_objc_arc_exceptions,
2729  /*default=*/types::isCXX(Input.getType())))
2730  CmdArgs.push_back("-fobjc-arc-exceptions");
2731  }
2732 
2733  // Silence warning for full exception code emission options when explicitly
2734  // set to use no ARC.
2735  if (Args.hasArg(options::OPT_fno_objc_arc)) {
2736  Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2737  Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2738  }
2739 
2740  // -fobjc-infer-related-result-type is the default, except in the Objective-C
2741  // rewriter.
2742  if (InferCovariantReturns)
2743  CmdArgs.push_back("-fno-objc-infer-related-result-type");
2744 
2745  // Pass down -fobjc-weak or -fno-objc-weak if present.
2746  if (types::isObjC(Input.getType())) {
2747  auto WeakArg =
2748  Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
2749  if (!WeakArg) {
2750  // nothing to do
2751  } else if (!Runtime.allowsWeak()) {
2752  if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
2753  D.Diag(diag::err_objc_weak_unsupported);
2754  } else {
2755  WeakArg->render(Args, CmdArgs);
2756  }
2757  }
2758 }
2759 
2760 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
2761  ArgStringList &CmdArgs) {
2762  bool CaretDefault = true;
2763  bool ColumnDefault = true;
2764 
2765  if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
2766  options::OPT__SLASH_diagnostics_column,
2767  options::OPT__SLASH_diagnostics_caret)) {
2768  switch (A->getOption().getID()) {
2769  case options::OPT__SLASH_diagnostics_caret:
2770  CaretDefault = true;
2771  ColumnDefault = true;
2772  break;
2773  case options::OPT__SLASH_diagnostics_column:
2774  CaretDefault = false;
2775  ColumnDefault = true;
2776  break;
2777  case options::OPT__SLASH_diagnostics_classic:
2778  CaretDefault = false;
2779  ColumnDefault = false;
2780  break;
2781  }
2782  }
2783 
2784  // -fcaret-diagnostics is default.
2785  if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
2786  options::OPT_fno_caret_diagnostics, CaretDefault))
2787  CmdArgs.push_back("-fno-caret-diagnostics");
2788 
2789  // -fdiagnostics-fixit-info is default, only pass non-default.
2790  if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
2791  options::OPT_fno_diagnostics_fixit_info))
2792  CmdArgs.push_back("-fno-diagnostics-fixit-info");
2793 
2794  // Enable -fdiagnostics-show-option by default.
2795  if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
2796  options::OPT_fno_diagnostics_show_option))
2797  CmdArgs.push_back("-fdiagnostics-show-option");
2798 
2799  if (const Arg *A =
2800  Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
2801  CmdArgs.push_back("-fdiagnostics-show-category");
2802  CmdArgs.push_back(A->getValue());
2803  }
2804 
2805  if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
2806  options::OPT_fno_diagnostics_show_hotness, false))
2807  CmdArgs.push_back("-fdiagnostics-show-hotness");
2808 
2809  if (const Arg *A =
2810  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
2811  std::string Opt =
2812  std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
2813  CmdArgs.push_back(Args.MakeArgString(Opt));
2814  }
2815 
2816  if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
2817  CmdArgs.push_back("-fdiagnostics-format");
2818  CmdArgs.push_back(A->getValue());
2819  }
2820 
2821  if (const Arg *A = Args.getLastArg(
2822  options::OPT_fdiagnostics_show_note_include_stack,
2823  options::OPT_fno_diagnostics_show_note_include_stack)) {
2824  const Option &O = A->getOption();
2825  if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
2826  CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
2827  else
2828  CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
2829  }
2830 
2831  // Color diagnostics are parsed by the driver directly from argv and later
2832  // re-parsed to construct this job; claim any possible color diagnostic here
2833  // to avoid warn_drv_unused_argument and diagnose bad
2834  // OPT_fdiagnostics_color_EQ values.
2835  for (const Arg *A : Args) {
2836  const Option &O = A->getOption();
2837  if (!O.matches(options::OPT_fcolor_diagnostics) &&
2838  !O.matches(options::OPT_fdiagnostics_color) &&
2839  !O.matches(options::OPT_fno_color_diagnostics) &&
2840  !O.matches(options::OPT_fno_diagnostics_color) &&
2841  !O.matches(options::OPT_fdiagnostics_color_EQ))
2842  continue;
2843 
2844  if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
2845  StringRef Value(A->getValue());
2846  if (Value != "always" && Value != "never" && Value != "auto")
2847  D.Diag(diag::err_drv_clang_unsupported)
2848  << ("-fdiagnostics-color=" + Value).str();
2849  }
2850  A->claim();
2851  }
2852 
2853  if (D.getDiags().getDiagnosticOptions().ShowColors)
2854  CmdArgs.push_back("-fcolor-diagnostics");
2855 
2856  if (Args.hasArg(options::OPT_fansi_escape_codes))
2857  CmdArgs.push_back("-fansi-escape-codes");
2858 
2859  if (!Args.hasFlag(options::OPT_fshow_source_location,
2860  options::OPT_fno_show_source_location))
2861  CmdArgs.push_back("-fno-show-source-location");
2862 
2863  if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
2864  CmdArgs.push_back("-fdiagnostics-absolute-paths");
2865 
2866  if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
2867  ColumnDefault))
2868  CmdArgs.push_back("-fno-show-column");
2869 
2870  if (!Args.hasFlag(options::OPT_fspell_checking,
2871  options::OPT_fno_spell_checking))
2872  CmdArgs.push_back("-fno-spell-checking");
2873 }
2874 
2875 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
2876  const llvm::Triple &T, const ArgList &Args,
2877  bool EmitCodeView, bool IsWindowsMSVC,
2878  ArgStringList &CmdArgs,
2880  const Arg *&SplitDWARFArg) {
2881  if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
2882  options::OPT_fno_debug_info_for_profiling, false) &&
2884  Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
2885  CmdArgs.push_back("-fdebug-info-for-profiling");
2886 
2887  // The 'g' groups options involve a somewhat intricate sequence of decisions
2888  // about what to pass from the driver to the frontend, but by the time they
2889  // reach cc1 they've been factored into three well-defined orthogonal choices:
2890  // * what level of debug info to generate
2891  // * what dwarf version to write
2892  // * what debugger tuning to use
2893  // This avoids having to monkey around further in cc1 other than to disable
2894  // codeview if not running in a Windows environment. Perhaps even that
2895  // decision should be made in the driver as well though.
2896  unsigned DWARFVersion = 0;
2897  llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
2898 
2899  bool SplitDWARFInlining =
2900  Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
2901  options::OPT_fno_split_dwarf_inlining, true);
2902 
2903  Args.ClaimAllArgs(options::OPT_g_Group);
2904 
2905  SplitDWARFArg = Args.getLastArg(options::OPT_gsplit_dwarf);
2906 
2907  if (SplitDWARFArg && !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
2908  SplitDWARFArg = nullptr;
2909  SplitDWARFInlining = false;
2910  }
2911 
2912  if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
2913  if (checkDebugInfoOption(A, Args, D, TC)) {
2914  // If the last option explicitly specified a debug-info level, use it.
2915  if (A->getOption().matches(options::OPT_gN_Group)) {
2916  DebugInfoKind = DebugLevelToInfoKind(*A);
2917  // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
2918  // But -gsplit-dwarf is not a g_group option, hence we have to check the
2919  // order explicitly. If -gsplit-dwarf wins, we fix DebugInfoKind later.
2920  // This gets a bit more complicated if you've disabled inline info in
2921  // the skeleton CUs (SplitDWARFInlining) - then there's value in
2922  // composing split-dwarf and line-tables-only, so let those compose
2923  // naturally in that case. And if you just turned off debug info,
2924  // (-gsplit-dwarf -g0) - do that.
2925  if (SplitDWARFArg) {
2926  if (A->getIndex() > SplitDWARFArg->getIndex()) {
2927  if (DebugInfoKind == codegenoptions::NoDebugInfo ||
2928  (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
2929  SplitDWARFInlining))
2930  SplitDWARFArg = nullptr;
2931  } else if (SplitDWARFInlining)
2932  DebugInfoKind = codegenoptions::NoDebugInfo;
2933  }
2934  } else {
2935  // For any other 'g' option, use Limited.
2936  DebugInfoKind = codegenoptions::LimitedDebugInfo;
2937  }
2938  } else {
2939  DebugInfoKind = codegenoptions::LimitedDebugInfo;
2940  }
2941  }
2942 
2943  // If a debugger tuning argument appeared, remember it.
2944  if (const Arg *A =
2945  Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
2946  if (checkDebugInfoOption(A, Args, D, TC)) {
2947  if (A->getOption().matches(options::OPT_glldb))
2948  DebuggerTuning = llvm::DebuggerKind::LLDB;
2949  else if (A->getOption().matches(options::OPT_gsce))
2950  DebuggerTuning = llvm::DebuggerKind::SCE;
2951  else
2952  DebuggerTuning = llvm::DebuggerKind::GDB;
2953  }
2954  }
2955 
2956  // If a -gdwarf argument appeared, remember it.
2957  if (const Arg *A =
2958  Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
2959  options::OPT_gdwarf_4, options::OPT_gdwarf_5))
2960  if (checkDebugInfoOption(A, Args, D, TC))
2961  DWARFVersion = DwarfVersionNum(A->getSpelling());
2962 
2963  // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
2964  // argument parsing.
2965  if (EmitCodeView) {
2966  if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
2967  EmitCodeView = checkDebugInfoOption(A, Args, D, TC);
2968  if (EmitCodeView) {
2969  // DWARFVersion remains at 0 if no explicit choice was made.
2970  CmdArgs.push_back("-gcodeview");
2971  }
2972  }
2973  }
2974 
2975  if (!EmitCodeView && DWARFVersion == 0 &&
2976  DebugInfoKind != codegenoptions::NoDebugInfo)
2977  DWARFVersion = TC.GetDefaultDwarfVersion();
2978 
2979  // We ignore flag -gstrict-dwarf for now.
2980  // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
2981  Args.ClaimAllArgs(options::OPT_g_flags_Group);
2982 
2983  // Column info is included by default for everything except SCE and
2984  // CodeView. Clang doesn't track end columns, just starting columns, which,
2985  // in theory, is fine for CodeView (and PDB). In practice, however, the
2986  // Microsoft debuggers don't handle missing end columns well, so it's better
2987  // not to include any column info.
2988  if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
2989  (void)checkDebugInfoOption(A, Args, D, TC);
2990  if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
2991  /*Default=*/!EmitCodeView &&
2992  DebuggerTuning != llvm::DebuggerKind::SCE))
2993  CmdArgs.push_back("-dwarf-column-info");
2994 
2995  // FIXME: Move backend command line options to the module.
2996  // If -gline-tables-only is the last option it wins.
2997  if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
2998  if (checkDebugInfoOption(A, Args, D, TC)) {
2999  if (DebugInfoKind != codegenoptions::DebugLineTablesOnly) {
3000  DebugInfoKind = codegenoptions::LimitedDebugInfo;
3001  CmdArgs.push_back("-dwarf-ext-refs");
3002  CmdArgs.push_back("-fmodule-format=obj");
3003  }
3004  }
3005 
3006  // -gsplit-dwarf should turn on -g and enable the backend dwarf
3007  // splitting and extraction.
3008  // FIXME: Currently only works on Linux.
3009  if (T.isOSLinux()) {
3010  if (!SplitDWARFInlining)
3011  CmdArgs.push_back("-fno-split-dwarf-inlining");
3012 
3013  if (SplitDWARFArg) {
3014  if (DebugInfoKind == codegenoptions::NoDebugInfo)
3015  DebugInfoKind = codegenoptions::LimitedDebugInfo;
3016  CmdArgs.push_back("-enable-split-dwarf");
3017  }
3018  }
3019 
3020  // After we've dealt with all combinations of things that could
3021  // make DebugInfoKind be other than None or DebugLineTablesOnly,
3022  // figure out if we need to "upgrade" it to standalone debug info.
3023  // We parse these two '-f' options whether or not they will be used,
3024  // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3025  bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
3026  options::OPT_fno_standalone_debug,
3028  if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
3029  (void)checkDebugInfoOption(A, Args, D, TC);
3030  if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
3031  DebugInfoKind = codegenoptions::FullDebugInfo;
3032 
3033  if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
3034  false)) {
3035  // Source embedding is a vendor extension to DWARF v5. By now we have
3036  // checked if a DWARF version was stated explicitly, and have otherwise
3037  // fallen back to the target default, so if this is still not at least 5
3038  // we emit an error.
3039  const Arg *A = Args.getLastArg(options::OPT_gembed_source);
3040  if (DWARFVersion < 5)
3041  D.Diag(diag::err_drv_argument_only_allowed_with)
3042  << A->getAsString(Args) << "-gdwarf-5";
3043  else if (checkDebugInfoOption(A, Args, D, TC))
3044  CmdArgs.push_back("-gembed-source");
3045  }
3046 
3047  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3048  DebuggerTuning);
3049 
3050  // -fdebug-macro turns on macro debug info generation.
3051  if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3052  false))
3053  if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
3054  D, TC))
3055  CmdArgs.push_back("-debug-info-macro");
3056 
3057  // -ggnu-pubnames turns on gnu style pubnames in the backend.
3058  if (Args.hasFlag(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3059  false))
3060  if (checkDebugInfoOption(Args.getLastArg(options::OPT_ggnu_pubnames), Args,
3061  D, TC))
3062  CmdArgs.push_back("-ggnu-pubnames");
3063 
3064  // -gdwarf-aranges turns on the emission of the aranges section in the
3065  // backend.
3066  // Always enabled for SCE tuning.
3067  bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
3068  if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
3069  NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
3070  if (NeedAranges) {
3071  CmdArgs.push_back("-mllvm");
3072  CmdArgs.push_back("-generate-arange-section");
3073  }
3074 
3075  if (Args.hasFlag(options::OPT_fdebug_types_section,
3076  options::OPT_fno_debug_types_section, false)) {
3077  if (!T.isOSBinFormatELF()) {
3078  D.Diag(diag::err_drv_unsupported_opt_for_target)
3079  << Args.getLastArg(options::OPT_fdebug_types_section)
3080  ->getAsString(Args)
3081  << T.getTriple();
3082  } else if (checkDebugInfoOption(
3083  Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
3084  TC)) {
3085  CmdArgs.push_back("-mllvm");
3086  CmdArgs.push_back("-generate-type-units");
3087  }
3088  }
3089 
3090  // Decide how to render forward declarations of template instantiations.
3091  // SCE wants full descriptions, others just get them in the name.
3092  if (DebuggerTuning == llvm::DebuggerKind::SCE)
3093  CmdArgs.push_back("-debug-forward-template-params");
3094 
3095  // Do we need to explicitly import anonymous namespaces into the parent
3096  // scope?
3097  if (DebuggerTuning == llvm::DebuggerKind::SCE)
3098  CmdArgs.push_back("-dwarf-explicit-import");
3099 
3100  RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
3101 }
3102 
3104  const InputInfo &Output, const InputInfoList &Inputs,
3105  const ArgList &Args, const char *LinkingOutput) const {
3106  const llvm::Triple &RawTriple = getToolChain().getTriple();
3107  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
3108  const std::string &TripleStr = Triple.getTriple();
3109 
3110  bool KernelOrKext =
3111  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3112  const Driver &D = getToolChain().getDriver();
3113  ArgStringList CmdArgs;
3114 
3115  // Check number of inputs for sanity. We need at least one input.
3116  assert(Inputs.size() >= 1 && "Must have at least one input.");
3117  const InputInfo &Input = Inputs[0];
3118  // CUDA/HIP compilation may have multiple inputs (source file + results of
3119  // device-side compilations). OpenMP device jobs also take the host IR as a
3120  // second input. All other jobs are expected to have exactly one
3121  // input.
3122  bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3123  bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3124  bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3125  assert((IsCuda || IsHIP || (IsOpenMPDevice && Inputs.size() == 2) ||
3126  Inputs.size() == 1) &&
3127  "Unable to handle multiple inputs.");
3128 
3129  const llvm::Triple *AuxTriple =
3130  IsCuda ? getToolChain().getAuxTriple() : nullptr;
3131 
3132  bool IsWindowsGNU = RawTriple.isWindowsGNUEnvironment();
3133  bool IsWindowsCygnus = RawTriple.isWindowsCygwinEnvironment();
3134  bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3135  bool IsIAMCU = RawTriple.isOSIAMCU();
3136 
3137  // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3138  // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3139  // Windows), we need to pass Windows-specific flags to cc1.
3140  if (IsCuda || IsHIP) {
3141  IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3142  IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment();
3143  IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment();
3144  }
3145 
3146  // C++ is not supported for IAMCU.
3147  if (IsIAMCU && types::isCXX(Input.getType()))
3148  D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3149 
3150  // Invoke ourselves in -cc1 mode.
3151  //
3152  // FIXME: Implement custom jobs for internal actions.
3153  CmdArgs.push_back("-cc1");
3154 
3155  // Add the "effective" target triple.
3156  CmdArgs.push_back("-triple");
3157  CmdArgs.push_back(Args.MakeArgString(TripleStr));
3158 
3159  if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3160  DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3161  Args.ClaimAllArgs(options::OPT_MJ);
3162  }
3163 
3164  if (IsCuda || IsHIP) {
3165  // We have to pass the triple of the host if compiling for a CUDA/HIP device
3166  // and vice-versa.
3167  std::string NormalizedTriple;
3170  NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3171  ->getTriple()
3172  .normalize();
3173  else
3174  NormalizedTriple =
3177  ->getTriple()
3178  .normalize();
3179 
3180  CmdArgs.push_back("-aux-triple");
3181  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3182  }
3183 
3184  if (IsOpenMPDevice) {
3185  // We have to pass the triple of the host if compiling for an OpenMP device.
3186  std::string NormalizedTriple =
3188  ->getTriple()
3189  .normalize();
3190  CmdArgs.push_back("-aux-triple");
3191  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3192  }
3193 
3194  if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3195  Triple.getArch() == llvm::Triple::thumb)) {
3196  unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3197  unsigned Version;
3198  Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3199  if (Version < 7)
3200  D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3201  << TripleStr;
3202  }
3203 
3204  // Push all default warning arguments that are specific to
3205  // the given target. These come before user provided warning options
3206  // are provided.
3207  getToolChain().addClangWarningOptions(CmdArgs);
3208 
3209  // Select the appropriate action.
3210  RewriteKind rewriteKind = RK_None;
3211 
3212  if (isa<AnalyzeJobAction>(JA)) {
3213  assert(JA.getType() == types::TY_Plist && "Invalid output type.");
3214  CmdArgs.push_back("-analyze");
3215  } else if (isa<MigrateJobAction>(JA)) {
3216  CmdArgs.push_back("-migrate");
3217  } else if (isa<PreprocessJobAction>(JA)) {
3218  if (Output.getType() == types::TY_Dependencies)
3219  CmdArgs.push_back("-Eonly");
3220  else {
3221  CmdArgs.push_back("-E");
3222  if (Args.hasArg(options::OPT_rewrite_objc) &&
3223  !Args.hasArg(options::OPT_g_Group))
3224  CmdArgs.push_back("-P");
3225  }
3226  } else if (isa<AssembleJobAction>(JA)) {
3227  CmdArgs.push_back("-emit-obj");
3228 
3229  CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3230 
3231  // Also ignore explicit -force_cpusubtype_ALL option.
3232  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3233  } else if (isa<PrecompileJobAction>(JA)) {
3234  // Use PCH if the user requested it.
3235  bool UsePCH = D.CCCUsePCH;
3236 
3237  if (JA.getType() == types::TY_Nothing)
3238  CmdArgs.push_back("-fsyntax-only");
3239  else if (JA.getType() == types::TY_ModuleFile)
3240  CmdArgs.push_back("-emit-module-interface");
3241  else if (UsePCH)
3242  CmdArgs.push_back("-emit-pch");
3243  else
3244  CmdArgs.push_back("-emit-pth");
3245  } else if (isa<VerifyPCHJobAction>(JA)) {
3246  CmdArgs.push_back("-verify-pch");
3247  } else {
3248  assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
3249  "Invalid action for clang tool.");
3250  if (JA.getType() == types::TY_Nothing) {
3251  CmdArgs.push_back("-fsyntax-only");
3252  } else if (JA.getType() == types::TY_LLVM_IR ||
3253  JA.getType() == types::TY_LTO_IR) {
3254  CmdArgs.push_back("-emit-llvm");
3255  } else if (JA.getType() == types::TY_LLVM_BC ||
3256  JA.getType() == types::TY_LTO_BC) {
3257  CmdArgs.push_back("-emit-llvm-bc");
3258  } else if (JA.getType() == types::TY_PP_Asm) {
3259  CmdArgs.push_back("-S");
3260  } else if (JA.getType() == types::TY_AST) {
3261  CmdArgs.push_back("-emit-pch");
3262  } else if (JA.getType() == types::TY_ModuleFile) {
3263  CmdArgs.push_back("-module-file-info");
3264  } else if (JA.getType() == types::TY_RewrittenObjC) {
3265  CmdArgs.push_back("-rewrite-objc");
3266  rewriteKind = RK_NonFragile;
3267  } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3268  CmdArgs.push_back("-rewrite-objc");
3269  rewriteKind = RK_Fragile;
3270  } else {
3271  assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
3272  }
3273 
3274  // Preserve use-list order by default when emitting bitcode, so that
3275  // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3276  // same result as running passes here. For LTO, we don't need to preserve
3277  // the use-list order, since serialization to bitcode is part of the flow.
3278  if (JA.getType() == types::TY_LLVM_BC)
3279  CmdArgs.push_back("-emit-llvm-uselists");
3280 
3281  // Device-side jobs do not support LTO.
3282  bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
3284 
3285  if (D.isUsingLTO() && !isDeviceOffloadAction) {
3286  Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3287 
3288  // The Darwin and PS4 linkers currently use the legacy LTO API, which
3289  // does not support LTO unit features (CFI, whole program vtable opt)
3290  // under ThinLTO.
3291  if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3292  D.getLTOMode() == LTOK_Full)
3293  CmdArgs.push_back("-flto-unit");
3294  }
3295  }
3296 
3297  if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3298  if (!types::isLLVMIR(Input.getType()))
3299  D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
3300  << "-x ir";
3301  Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3302  }
3303 
3304  if (Args.getLastArg(options::OPT_save_temps_EQ))
3305  Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
3306 
3307  // Embed-bitcode option.
3308  if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3309  (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3310  // Add flags implied by -fembed-bitcode.
3311  Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3312  // Disable all llvm IR level optimizations.
3313  CmdArgs.push_back("-disable-llvm-passes");
3314  }
3316  CmdArgs.push_back("-fembed-bitcode=marker");
3317 
3318  // We normally speed up the clang process a bit by skipping destructors at
3319  // exit, but when we're generating diagnostics we can rely on some of the
3320  // cleanup.
3321  if (!C.isForDiagnostics())
3322  CmdArgs.push_back("-disable-free");
3323 
3324 #ifdef NDEBUG
3325  const bool IsAssertBuild = false;
3326 #else
3327  const bool IsAssertBuild = true;
3328 #endif
3329 
3330  // Disable the verification pass in -asserts builds.
3331  if (!IsAssertBuild)
3332  CmdArgs.push_back("-disable-llvm-verifier");
3333 
3334  // Discard value names in assert builds unless otherwise specified.
3335  if (Args.hasFlag(options::OPT_fdiscard_value_names,
3336  options::OPT_fno_discard_value_names, !IsAssertBuild))
3337  CmdArgs.push_back("-discard-value-names");
3338 
3339  // Set the main file name, so that debug info works even with
3340  // -save-temps.
3341  CmdArgs.push_back("-main-file-name");
3342  CmdArgs.push_back(getBaseInputName(Args, Input));
3343 
3344  // Some flags which affect the language (via preprocessor
3345  // defines).
3346  if (Args.hasArg(options::OPT_static))
3347  CmdArgs.push_back("-static-define");
3348 
3349  if (isa<AnalyzeJobAction>(JA))
3350  RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3351 
3352  CheckCodeGenerationOptions(D, Args);
3353 
3354  unsigned FunctionAlignment = ParseFunctionAlignment(getToolChain(), Args);
3355  assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
3356  if (FunctionAlignment) {
3357  CmdArgs.push_back("-function-alignment");
3358  CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
3359  }
3360 
3361  llvm::Reloc::Model RelocationModel;
3362  unsigned PICLevel;
3363  bool IsPIE;
3364  std::tie(RelocationModel, PICLevel, IsPIE) =
3365  ParsePICArgs(getToolChain(), Args);
3366 
3367  const char *RMName = RelocationModelName(RelocationModel);
3368 
3369  if ((RelocationModel == llvm::Reloc::ROPI ||
3370  RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3371  types::isCXX(Input.getType()) &&
3372  !Args.hasArg(options::OPT_fallow_unsupported))
3373  D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3374 
3375  if (RMName) {
3376  CmdArgs.push_back("-mrelocation-model");
3377  CmdArgs.push_back(RMName);
3378  }
3379  if (PICLevel > 0) {
3380  CmdArgs.push_back("-pic-level");
3381  CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3382  if (IsPIE)
3383  CmdArgs.push_back("-pic-is-pie");
3384  }
3385 
3386  if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3387  CmdArgs.push_back("-meabi");
3388  CmdArgs.push_back(A->getValue());
3389  }
3390 
3391  CmdArgs.push_back("-mthread-model");
3392  if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3393  if (!getToolChain().isThreadModelSupported(A->getValue()))
3394  D.Diag(diag::err_drv_invalid_thread_model_for_target)
3395  << A->getValue() << A->getAsString(Args);
3396  CmdArgs.push_back(A->getValue());
3397  }
3398  else
3399  CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel()));
3400 
3401  Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3402 
3403  if (Args.hasFlag(options::OPT_fmerge_all_constants,
3404  options::OPT_fno_merge_all_constants, false))
3405  CmdArgs.push_back("-fmerge-all-constants");
3406 
3407  if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
3408  options::OPT_fdelete_null_pointer_checks, false))
3409  CmdArgs.push_back("-fno-delete-null-pointer-checks");
3410 
3411  // LLVM Code Generator Options.
3412 
3413  if (Args.hasArg(options::OPT_frewrite_map_file) ||
3414  Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3415  for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3416  options::OPT_frewrite_map_file_EQ)) {
3417  StringRef Map = A->getValue();
3418  if (!llvm::sys::fs::exists(Map)) {
3419  D.Diag(diag::err_drv_no_such_file) << Map;
3420  } else {
3421  CmdArgs.push_back("-frewrite-map-file");
3422  CmdArgs.push_back(A->getValue());
3423  A->claim();
3424  }
3425  }
3426  }
3427 
3428  if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3429  StringRef v = A->getValue();
3430  CmdArgs.push_back("-mllvm");
3431  CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3432  A->claim();
3433  }
3434 
3435  if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3436  true))
3437  CmdArgs.push_back("-fno-jump-tables");
3438 
3439  if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3440  options::OPT_fno_profile_sample_accurate, false))
3441  CmdArgs.push_back("-fprofile-sample-accurate");
3442 
3443  if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3444  options::OPT_fno_preserve_as_comments, true))
3445  CmdArgs.push_back("-fno-preserve-as-comments");
3446 
3447  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3448  CmdArgs.push_back("-mregparm");
3449  CmdArgs.push_back(A->getValue());
3450  }
3451 
3452  if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3453  options::OPT_freg_struct_return)) {
3454  if (getToolChain().getArch() != llvm::Triple::x86) {
3455  D.Diag(diag::err_drv_unsupported_opt_for_target)
3456  << A->getSpelling() << RawTriple.str();
3457  } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3458  CmdArgs.push_back("-fpcc-struct-return");
3459  } else {
3460  assert(A->getOption().matches(options::OPT_freg_struct_return));
3461  CmdArgs.push_back("-freg-struct-return");
3462  }
3463  }
3464 
3465  if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3466  CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3467 
3468  if (shouldUseFramePointer(Args, RawTriple))
3469  CmdArgs.push_back("-mdisable-fp-elim");
3470  if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3471  options::OPT_fno_zero_initialized_in_bss))
3472  CmdArgs.push_back("-mno-zero-initialized-in-bss");
3473 
3474  bool OFastEnabled = isOptimizationLevelFast(Args);
3475  // If -Ofast is the optimization level, then -fstrict-aliasing should be
3476  // enabled. This alias option is being used to simplify the hasFlag logic.
3477  OptSpecifier StrictAliasingAliasOption =
3478  OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3479  // We turn strict aliasing off by default if we're in CL mode, since MSVC
3480  // doesn't do any TBAA.
3481  bool TBAAOnByDefault = !D.IsCLMode();
3482  if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3483  options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3484  CmdArgs.push_back("-relaxed-aliasing");
3485  if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3486  options::OPT_fno_struct_path_tbaa))
3487  CmdArgs.push_back("-no-struct-path-tbaa");
3488  if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3489  false))
3490  CmdArgs.push_back("-fstrict-enums");
3491  if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3492  true))
3493  CmdArgs.push_back("-fno-strict-return");
3494  if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3495  options::OPT_fno_allow_editor_placeholders, false))
3496  CmdArgs.push_back("-fallow-editor-placeholders");
3497  if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3498  options::OPT_fno_strict_vtable_pointers,
3499  false))
3500  CmdArgs.push_back("-fstrict-vtable-pointers");
3501  if (Args.hasFlag(options::OPT_fforce_emit_vtables,
3502  options::OPT_fno_force_emit_vtables,
3503  false))
3504  CmdArgs.push_back("-fforce-emit-vtables");
3505  if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3506  options::OPT_fno_optimize_sibling_calls))
3507  CmdArgs.push_back("-mdisable-tail-calls");
3508  if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
3509  options::OPT_fescaping_block_tail_calls, false))
3510  CmdArgs.push_back("-fno-escaping-block-tail-calls");
3511 
3512  Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
3513  options::OPT_fno_fine_grained_bitfield_accesses);
3514 
3515  // Handle segmented stacks.
3516  if (Args.hasArg(options::OPT_fsplit_stack))
3517  CmdArgs.push_back("-split-stacks");
3518 
3519  RenderFloatingPointOptions(getToolChain(), D, OFastEnabled, Args, CmdArgs);
3520 
3521  // Decide whether to use verbose asm. Verbose assembly is the default on
3522  // toolchains which have the integrated assembler on by default.
3523  bool IsIntegratedAssemblerDefault =
3524  getToolChain().IsIntegratedAssemblerDefault();
3525  if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
3526  IsIntegratedAssemblerDefault) ||
3527  Args.hasArg(options::OPT_dA))
3528  CmdArgs.push_back("-masm-verbose");
3529 
3530  if (!getToolChain().useIntegratedAs())
3531  CmdArgs.push_back("-no-integrated-as");
3532 
3533  if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
3534  CmdArgs.push_back("-mdebug-pass");
3535  CmdArgs.push_back("Structure");
3536  }
3537  if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
3538  CmdArgs.push_back("-mdebug-pass");
3539  CmdArgs.push_back("Arguments");
3540  }
3541 
3542  // Enable -mconstructor-aliases except on darwin, where we have to work around
3543  // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
3544  // aliases aren't supported.
3545  if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
3546  CmdArgs.push_back("-mconstructor-aliases");
3547 
3548  // Darwin's kernel doesn't support guard variables; just die if we
3549  // try to use them.
3550  if (KernelOrKext && RawTriple.isOSDarwin())
3551  CmdArgs.push_back("-fforbid-guard-variables");
3552 
3553  if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
3554  false)) {
3555  CmdArgs.push_back("-mms-bitfields");
3556  }
3557 
3558  if (Args.hasFlag(options::OPT_mpie_copy_relocations,
3559  options::OPT_mno_pie_copy_relocations,
3560  false)) {
3561  CmdArgs.push_back("-mpie-copy-relocations");
3562  }
3563 
3564  if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
3565  CmdArgs.push_back("-fno-plt");
3566  }
3567 
3568  // -fhosted is default.
3569  // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
3570  // use Freestanding.
3571  bool Freestanding =
3572  Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
3573  KernelOrKext;
3574  if (Freestanding)
3575  CmdArgs.push_back("-ffreestanding");
3576 
3577  // This is a coarse approximation of what llvm-gcc actually does, both
3578  // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
3579  // complicated ways.
3580  bool AsynchronousUnwindTables =
3581  Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
3582  options::OPT_fno_asynchronous_unwind_tables,
3583  (getToolChain().IsUnwindTablesDefault(Args) ||
3584  getToolChain().getSanitizerArgs().needsUnwindTables()) &&
3585  !Freestanding);
3586  if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
3587  AsynchronousUnwindTables))
3588  CmdArgs.push_back("-munwind-tables");
3589 
3590  getToolChain().addClangTargetOptions(Args, CmdArgs,
3592 
3593  if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
3594  CmdArgs.push_back("-mlimit-float-precision");
3595  CmdArgs.push_back(A->getValue());
3596  }
3597 
3598  // FIXME: Handle -mtune=.
3599  (void)Args.hasArg(options::OPT_mtune_EQ);
3600 
3601  if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
3602  CmdArgs.push_back("-mcode-model");
3603  CmdArgs.push_back(A->getValue());
3604  }
3605 
3606  // Add the target cpu
3607  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
3608  if (!CPU.empty()) {
3609  CmdArgs.push_back("-target-cpu");
3610  CmdArgs.push_back(Args.MakeArgString(CPU));
3611  }
3612 
3613  RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
3614 
3615  // These two are potentially updated by AddClangCLArgs.
3617  bool EmitCodeView = false;
3618 
3619  // Add clang-cl arguments.
3620  types::ID InputType = Input.getType();
3621  if (D.IsCLMode())
3622  AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
3623  else
3624  EmitCodeView = Args.hasArg(options::OPT_gcodeview);
3625 
3626  const Arg *SplitDWARFArg = nullptr;
3627  RenderDebugOptions(getToolChain(), D, RawTriple, Args, EmitCodeView,
3628  IsWindowsMSVC, CmdArgs, DebugInfoKind, SplitDWARFArg);
3629 
3630  // Add the split debug info name to the command lines here so we
3631  // can propagate it to the backend.
3632  bool SplitDWARF = SplitDWARFArg && RawTriple.isOSLinux() &&
3633  (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
3634  isa<BackendJobAction>(JA));
3635  const char *SplitDWARFOut;
3636  if (SplitDWARF) {
3637  CmdArgs.push_back("-split-dwarf-file");
3638  SplitDWARFOut = SplitDebugName(Args, Input);
3639  CmdArgs.push_back(SplitDWARFOut);
3640  }
3641 
3642  // Pass the linker version in use.
3643  if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
3644  CmdArgs.push_back("-target-linker-version");
3645  CmdArgs.push_back(A->getValue());
3646  }
3647 
3648  if (!shouldUseLeafFramePointer(Args, RawTriple))
3649  CmdArgs.push_back("-momit-leaf-frame-pointer");
3650 
3651  // Explicitly error on some things we know we don't support and can't just
3652  // ignore.
3653  if (!Args.hasArg(options::OPT_fallow_unsupported)) {
3654  Arg *Unsupported;
3655  if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
3656  getToolChain().getArch() == llvm::Triple::x86) {
3657  if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
3658  (Unsupported = Args.getLastArg(options::OPT_mkernel)))
3659  D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
3660  << Unsupported->getOption().getName();
3661  }
3662  // The faltivec option has been superseded by the maltivec option.
3663  if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
3664  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3665  << Unsupported->getOption().getName()
3666  << "please use -maltivec and include altivec.h explicitly";
3667  if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
3668  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
3669  << Unsupported->getOption().getName() << "please use -mno-altivec";
3670  }
3671 
3672  Args.AddAllArgs(CmdArgs, options::OPT_v);
3673  Args.AddLastArg(CmdArgs, options::OPT_H);
3674  if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
3675  CmdArgs.push_back("-header-include-file");
3676  CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
3677  : "-");
3678  }
3679  Args.AddLastArg(CmdArgs, options::OPT_P);
3680  Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
3681 
3682  if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
3683  CmdArgs.push_back("-diagnostic-log-file");
3684  CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
3685  : "-");
3686  }
3687 
3688  bool UseSeparateSections = isUseSeparateSections(Triple);
3689 
3690  if (Args.hasFlag(options::OPT_ffunction_sections,
3691  options::OPT_fno_function_sections, UseSeparateSections)) {
3692  CmdArgs.push_back("-ffunction-sections");
3693  }
3694 
3695  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
3696  UseSeparateSections)) {
3697  CmdArgs.push_back("-fdata-sections");
3698  }
3699 
3700  if (!Args.hasFlag(options::OPT_funique_section_names,
3701  options::OPT_fno_unique_section_names, true))
3702  CmdArgs.push_back("-fno-unique-section-names");
3703 
3704  if (auto *A = Args.getLastArg(
3705  options::OPT_finstrument_functions,
3706  options::OPT_finstrument_functions_after_inlining,
3707  options::OPT_finstrument_function_entry_bare))
3708  A->render(Args, CmdArgs);
3709 
3710  // NVPTX doesn't support PGO or coverage. There's no runtime support for
3711  // sampling, overhead of call arc collection is way too high and there's no
3712  // way to collect the output.
3713  if (!Triple.isNVPTX())
3714  addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
3715 
3716  if (auto *ABICompatArg = Args.getLastArg(options::OPT_fclang_abi_compat_EQ))
3717  ABICompatArg->render(Args, CmdArgs);
3718 
3719  // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
3720  if (RawTriple.isPS4CPU()) {
3721  PS4cpu::addProfileRTArgs(getToolChain(), Args, CmdArgs);
3722  PS4cpu::addSanitizerArgs(getToolChain(), CmdArgs);
3723  }
3724 
3725  // Pass options for controlling the default header search paths.
3726  if (Args.hasArg(options::OPT_nostdinc)) {
3727  CmdArgs.push_back("-nostdsysteminc");
3728  CmdArgs.push_back("-nobuiltininc");
3729  } else {
3730  if (Args.hasArg(options::OPT_nostdlibinc))
3731  CmdArgs.push_back("-nostdsysteminc");
3732  Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
3733  Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
3734  }
3735 
3736  // Pass the path to compiler resource files.
3737  CmdArgs.push_back("-resource-dir");
3738  CmdArgs.push_back(D.ResourceDir.c_str());
3739 
3740  Args.AddLastArg(CmdArgs, options::OPT_working_directory);
3741 
3742  RenderARCMigrateToolOptions(D, Args, CmdArgs);
3743 
3744  // Add preprocessing options like -I, -D, etc. if we are using the
3745  // preprocessor.
3746  //
3747  // FIXME: Support -fpreprocessed
3749  AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
3750 
3751  // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
3752  // that "The compiler can only warn and ignore the option if not recognized".
3753  // When building with ccache, it will pass -D options to clang even on
3754  // preprocessed inputs and configure concludes that -fPIC is not supported.
3755  Args.ClaimAllArgs(options::OPT_D);
3756 
3757  // Manually translate -O4 to -O3; let clang reject others.
3758  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3759  if (A->getOption().matches(options::OPT_O4)) {
3760  CmdArgs.push_back("-O3");
3761  D.Diag(diag::warn_O4_is_O3);
3762  } else {
3763  A->render(Args, CmdArgs);
3764  }
3765  }
3766 
3767  // Warn about ignored options to clang.
3768  for (const Arg *A :
3769  Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
3770  D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
3771  A->claim();
3772  }
3773 
3774  for (const Arg *A :
3775  Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
3776  D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
3777  A->claim();
3778  }
3779 
3780  claimNoWarnArgs(Args);
3781 
3782  Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
3783 
3784  Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
3785  if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
3786  CmdArgs.push_back("-pedantic");
3787  Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
3788  Args.AddLastArg(CmdArgs, options::OPT_w);
3789 
3790  // Fixed point flags
3791  if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
3792  /*Default=*/false))
3793  Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
3794 
3795  // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
3796  // (-ansi is equivalent to -std=c89 or -std=c++98).
3797  //
3798  // If a std is supplied, only add -trigraphs if it follows the
3799  // option.
3800  bool ImplyVCPPCXXVer = false;
3801  if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
3802  if (Std->getOption().matches(options::OPT_ansi))
3803  if (types::isCXX(InputType))
3804  CmdArgs.push_back("-std=c++98");
3805  else
3806  CmdArgs.push_back("-std=c89");
3807  else
3808  Std->render(Args, CmdArgs);
3809 
3810  // If -f(no-)trigraphs appears after the language standard flag, honor it.
3811  if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
3812  options::OPT_ftrigraphs,
3813  options::OPT_fno_trigraphs))
3814  if (A != Std)
3815  A->render(Args, CmdArgs);
3816  } else {
3817  // Honor -std-default.
3818  //
3819  // FIXME: Clang doesn't correctly handle -std= when the input language
3820  // doesn't match. For the time being just ignore this for C++ inputs;
3821  // eventually we want to do all the standard defaulting here instead of
3822  // splitting it between the driver and clang -cc1.
3823  if (!types::isCXX(InputType))
3824  Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
3825  /*Joined=*/true);
3826  else if (IsWindowsMSVC)
3827  ImplyVCPPCXXVer = true;
3828 
3829  Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
3830  options::OPT_fno_trigraphs);
3831  }
3832 
3833  // GCC's behavior for -Wwrite-strings is a bit strange:
3834  // * In C, this "warning flag" changes the types of string literals from
3835  // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
3836  // for the discarded qualifier.
3837  // * In C++, this is just a normal warning flag.
3838  //
3839  // Implementing this warning correctly in C is hard, so we follow GCC's
3840  // behavior for now. FIXME: Directly diagnose uses of a string literal as
3841  // a non-const char* in C, rather than using this crude hack.
3842  if (!types::isCXX(InputType)) {
3843  // FIXME: This should behave just like a warning flag, and thus should also
3844  // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
3845  Arg *WriteStrings =
3846  Args.getLastArg(options::OPT_Wwrite_strings,
3847  options::OPT_Wno_write_strings, options::OPT_w);
3848  if (WriteStrings &&
3849  WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
3850  CmdArgs.push_back("-fconst-strings");
3851  }
3852 
3853  // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
3854  // during C++ compilation, which it is by default. GCC keeps this define even
3855  // in the presence of '-w', match this behavior bug-for-bug.
3856  if (types::isCXX(InputType) &&
3857  Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
3858  true)) {
3859  CmdArgs.push_back("-fdeprecated-macro");
3860  }
3861 
3862  // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
3863  if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
3864  if (Asm->getOption().matches(options::OPT_fasm))
3865  CmdArgs.push_back("-fgnu-keywords");
3866  else
3867  CmdArgs.push_back("-fno-gnu-keywords");
3868  }
3869 
3870  if (ShouldDisableDwarfDirectory(Args, getToolChain()))
3871  CmdArgs.push_back("-fno-dwarf-directory-asm");
3872 
3873  if (ShouldDisableAutolink(Args, getToolChain()))
3874  CmdArgs.push_back("-fno-autolink");
3875 
3876  // Add in -fdebug-compilation-dir if necessary.
3877  addDebugCompDirArg(Args, CmdArgs);
3878 
3879  addDebugPrefixMapArg(D, Args, CmdArgs);
3880 
3881  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
3882  options::OPT_ftemplate_depth_EQ)) {
3883  CmdArgs.push_back("-ftemplate-depth");
3884  CmdArgs.push_back(A->getValue());
3885  }
3886 
3887  if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
3888  CmdArgs.push_back("-foperator-arrow-depth");
3889  CmdArgs.push_back(A->getValue());
3890  }
3891 
3892  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
3893  CmdArgs.push_back("-fconstexpr-depth");
3894  CmdArgs.push_back(A->getValue());
3895  }
3896 
3897  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
3898  CmdArgs.push_back("-fconstexpr-steps");
3899  CmdArgs.push_back(A->getValue());
3900  }
3901 
3902  if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
3903  CmdArgs.push_back("-fbracket-depth");
3904  CmdArgs.push_back(A->getValue());
3905  }
3906 
3907  if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
3908  options::OPT_Wlarge_by_value_copy_def)) {
3909  if (A->getNumValues()) {
3910  StringRef bytes = A->getValue();
3911  CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
3912  } else
3913  CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
3914  }
3915 
3916  if (Args.hasArg(options::OPT_relocatable_pch))
3917  CmdArgs.push_back("-relocatable-pch");
3918 
3919  if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
3920  CmdArgs.push_back("-fconstant-string-class");
3921  CmdArgs.push_back(A->getValue());
3922  }
3923 
3924  if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
3925  CmdArgs.push_back("-ftabstop");
3926  CmdArgs.push_back(A->getValue());
3927  }
3928 
3929  if (Args.hasFlag(options::OPT_fstack_size_section,
3930  options::OPT_fno_stack_size_section, RawTriple.isPS4()))
3931  CmdArgs.push_back("-fstack-size-section");
3932 
3933  CmdArgs.push_back("-ferror-limit");
3934  if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
3935  CmdArgs.push_back(A->getValue());
3936  else
3937  CmdArgs.push_back("19");
3938 
3939  if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
3940  CmdArgs.push_back("-fmacro-backtrace-limit");
3941  CmdArgs.push_back(A->getValue());
3942  }
3943 
3944  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
3945  CmdArgs.push_back("-ftemplate-backtrace-limit");
3946  CmdArgs.push_back(A->getValue());
3947  }
3948 
3949  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
3950  CmdArgs.push_back("-fconstexpr-backtrace-limit");
3951  CmdArgs.push_back(A->getValue());
3952  }
3953 
3954  if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
3955  CmdArgs.push_back("-fspell-checking-limit");
3956  CmdArgs.push_back(A->getValue());
3957  }
3958 
3959  // Pass -fmessage-length=.
3960  CmdArgs.push_back("-fmessage-length");
3961  if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
3962  CmdArgs.push_back(A->getValue());
3963  } else {
3964  // If -fmessage-length=N was not specified, determine whether this is a
3965  // terminal and, if so, implicitly define -fmessage-length appropriately.
3966  unsigned N = llvm::sys::Process::StandardErrColumns();
3967  CmdArgs.push_back(Args.MakeArgString(Twine(N)));
3968  }
3969 
3970  // -fvisibility= and -fvisibility-ms-compat are of a piece.
3971  if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
3972  options::OPT_fvisibility_ms_compat)) {
3973  if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
3974  CmdArgs.push_back("-fvisibility");
3975  CmdArgs.push_back(A->getValue());
3976  } else {
3977  assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
3978  CmdArgs.push_back("-fvisibility");
3979  CmdArgs.push_back("hidden");
3980  CmdArgs.push_back("-ftype-visibility");
3981  CmdArgs.push_back("default");
3982  }
3983  }
3984 
3985  Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
3986 
3987  Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
3988 
3989  // Forward -f (flag) options which we can pass directly.
3990  Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
3991  Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
3992  Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
3993  Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
3994  Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
3995  options::OPT_fno_emulated_tls);
3996 
3997  // AltiVec-like language extensions aren't relevant for assembling.
3998  if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
3999  Args.AddLastArg(CmdArgs, options::OPT_fzvector);
4000 
4001  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
4002  Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
4003 
4004  // Forward flags for OpenMP. We don't do this if the current action is an
4005  // device offloading action other than OpenMP.
4006  if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
4007  options::OPT_fno_openmp, false) &&
4010  switch (D.getOpenMPRuntime(Args)) {
4011  case Driver::OMPRT_OMP:
4012  case Driver::OMPRT_IOMP5:
4013  // Clang can generate useful OpenMP code for these two runtime libraries.
4014  CmdArgs.push_back("-fopenmp");
4015 
4016  // If no option regarding the use of TLS in OpenMP codegeneration is
4017  // given, decide a default based on the target. Otherwise rely on the
4018  // options and pass the right information to the frontend.
4019  if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
4020  options::OPT_fnoopenmp_use_tls, /*Default=*/true))
4021  CmdArgs.push_back("-fnoopenmp-use-tls");
4022  Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4023  options::OPT_fno_openmp_simd);
4024  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4025 
4026  // When in OpenMP offloading mode with NVPTX target, forward
4027  // cuda-mode flag
4028  Args.AddLastArg(CmdArgs, options::OPT_fopenmp_cuda_mode,
4029  options::OPT_fno_openmp_cuda_mode);
4030  break;
4031  default:
4032  // By default, if Clang doesn't know how to generate useful OpenMP code
4033  // for a specific runtime library, we just don't pass the '-fopenmp' flag
4034  // down to the actual compilation.
4035  // FIXME: It would be better to have a mode which *only* omits IR
4036  // generation based on the OpenMP support so that we get consistent
4037  // semantic analysis, etc.
4038  break;
4039  }
4040  } else {
4041  Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4042  options::OPT_fno_openmp_simd);
4043  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4044  }
4045 
4046  const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs();
4047  Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType);
4048 
4049  const XRayArgs &XRay = getToolChain().getXRayArgs();
4050  XRay.addArgs(getToolChain(), Args, CmdArgs, InputType);
4051 
4052  if (getToolChain().SupportsProfiling())
4053  Args.AddLastArg(CmdArgs, options::OPT_pg);
4054 
4055  if (getToolChain().SupportsProfiling())
4056  Args.AddLastArg(CmdArgs, options::OPT_mfentry);
4057 
4058  // -flax-vector-conversions is default.
4059  if (!Args.hasFlag(options::OPT_flax_vector_conversions,
4060  options::OPT_fno_lax_vector_conversions))
4061  CmdArgs.push_back("-fno-lax-vector-conversions");
4062 
4063  if (Args.getLastArg(options::OPT_fapple_kext) ||
4064  (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
4065  CmdArgs.push_back("-fapple-kext");
4066 
4067  Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
4068  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
4069  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
4070  Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
4071  Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
4072 
4073  if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
4074  CmdArgs.push_back("-ftrapv-handler");
4075  CmdArgs.push_back(A->getValue());
4076  }
4077 
4078  Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
4079 
4080  // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
4081  // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
4082  if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
4083  if (A->getOption().matches(options::OPT_fwrapv))
4084  CmdArgs.push_back("-fwrapv");
4085  } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
4086  options::OPT_fno_strict_overflow)) {
4087  if (A->getOption().matches(options::OPT_fno_strict_overflow))
4088  CmdArgs.push_back("-fwrapv");
4089  }
4090 
4091  if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
4092  options::OPT_fno_reroll_loops))
4093  if (A->getOption().matches(options::OPT_freroll_loops))
4094  CmdArgs.push_back("-freroll-loops");
4095 
4096  Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
4097  Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
4098  options::OPT_fno_unroll_loops);
4099 
4100  Args.AddLastArg(CmdArgs, options::OPT_pthread);
4101 
4102  RenderSSPOptions(getToolChain(), Args, CmdArgs, KernelOrKext);
4103 
4104  // Translate -mstackrealign
4105  if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
4106  false))
4107  CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
4108 
4109  if (Args.hasArg(options::OPT_mstack_alignment)) {
4110  StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
4111  CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
4112  }
4113 
4114  if (Args.hasArg(options::OPT_mstack_probe_size)) {
4115  StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
4116 
4117  if (!Size.empty())
4118  CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
4119  else
4120  CmdArgs.push_back("-mstack-probe-size=0");
4121  }
4122 
4123  if (!Args.hasFlag(options::OPT_mstack_arg_probe,
4124  options::OPT_mno_stack_arg_probe, true))
4125  CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
4126 
4127  if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
4128  options::OPT_mno_restrict_it)) {
4129  if (A->getOption().matches(options::OPT_mrestrict_it)) {
4130  CmdArgs.push_back("-mllvm");
4131  CmdArgs.push_back("-arm-restrict-it");
4132  } else {
4133  CmdArgs.push_back("-mllvm");
4134  CmdArgs.push_back("-arm-no-restrict-it");
4135  }
4136  } else if (Triple.isOSWindows() &&
4137  (Triple.getArch() == llvm::Triple::arm ||
4138  Triple.getArch() == llvm::Triple::thumb)) {
4139  // Windows on ARM expects restricted IT blocks
4140  CmdArgs.push_back("-mllvm");
4141  CmdArgs.push_back("-arm-restrict-it");
4142  }
4143 
4144  // Forward -cl options to -cc1
4145  RenderOpenCLOptions(Args, CmdArgs);
4146 
4147  if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
4148  CmdArgs.push_back(
4149  Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
4150  }
4151 
4152  // Forward -f options with positive and negative forms; we translate
4153  // these by hand.
4154  if (Arg *A = getLastProfileSampleUseArg(Args)) {
4155  StringRef fname = A->getValue();
4156  if (!llvm::sys::fs::exists(fname))
4157  D.Diag(diag::err_drv_no_such_file) << fname;
4158  else
4159  A->render(Args, CmdArgs);
4160  }
4161 
4162  RenderBuiltinOptions(getToolChain(), RawTriple, Args, CmdArgs);
4163 
4164  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4165  options::OPT_fno_assume_sane_operator_new))
4166  CmdArgs.push_back("-fno-assume-sane-operator-new");
4167 
4168  // -fblocks=0 is default.
4169  if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4170  getToolChain().IsBlocksDefault()) ||
4171  (Args.hasArg(options::OPT_fgnu_runtime) &&
4172  Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4173  !Args.hasArg(options::OPT_fno_blocks))) {
4174  CmdArgs.push_back("-fblocks");
4175 
4176  if (!Args.hasArg(options::OPT_fgnu_runtime) &&
4177  !getToolChain().hasBlocksRuntime())
4178  CmdArgs.push_back("-fblocks-runtime-optional");
4179  }
4180 
4181  // -fencode-extended-block-signature=1 is default.
4182  if (getToolChain().IsEncodeExtendedBlockSignatureDefault())
4183  CmdArgs.push_back("-fencode-extended-block-signature");
4184 
4185  if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4186  false) &&
4187  types::isCXX(InputType)) {
4188  CmdArgs.push_back("-fcoroutines-ts");
4189  }
4190 
4191  Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4192  options::OPT_fno_double_square_bracket_attributes);
4193 
4194  bool HaveModules = false;
4195  RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4196 
4197  // -faccess-control is default.
4198  if (Args.hasFlag(options::OPT_fno_access_control,
4199  options::OPT_faccess_control, false))
4200  CmdArgs.push_back("-fno-access-control");
4201 
4202  // -felide-constructors is the default.
4203  if (Args.hasFlag(options::OPT_fno_elide_constructors,
4204  options::OPT_felide_constructors, false))
4205  CmdArgs.push_back("-fno-elide-constructors");
4206 
4207  ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode();
4208 
4209  if (KernelOrKext || (types::isCXX(InputType) &&
4210  (RTTIMode == ToolChain::RM_Disabled)))
4211  CmdArgs.push_back("-fno-rtti");
4212 
4213  // -fshort-enums=0 is default for all architectures except Hexagon.
4214  if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4215  getToolChain().getArch() == llvm::Triple::hexagon))
4216  CmdArgs.push_back("-fshort-enums");
4217 
4218  RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4219 
4220  // -fuse-cxa-atexit is default.
4221  if (!Args.hasFlag(
4222  options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4223  !RawTriple.isOSWindows() &&
4224  RawTriple.getOS() != llvm::Triple::Solaris &&
4225  getToolChain().getArch() != llvm::Triple::hexagon &&
4226  getToolChain().getArch() != llvm::Triple::xcore &&
4227  ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4228  RawTriple.hasEnvironment())) ||
4229  KernelOrKext)
4230  CmdArgs.push_back("-fno-use-cxa-atexit");
4231 
4232  if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
4233  options::OPT_fno_register_global_dtors_with_atexit,
4234  RawTriple.isOSDarwin() && !KernelOrKext))
4235  CmdArgs.push_back("-fregister-global-dtors-with-atexit");
4236 
4237  // -fms-extensions=0 is default.
4238  if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4239  IsWindowsMSVC))
4240  CmdArgs.push_back("-fms-extensions");
4241 
4242  // -fno-use-line-directives is default.
4243  if (Args.hasFlag(options::OPT_fuse_line_directives,
4244  options::OPT_fno_use_line_directives, false))
4245  CmdArgs.push_back("-fuse-line-directives");
4246 
4247  // -fms-compatibility=0 is default.
4248  if (Args.hasFlag(options::OPT_fms_compatibility,
4249  options::OPT_fno_ms_compatibility,
4250  (IsWindowsMSVC &&
4251  Args.hasFlag(options::OPT_fms_extensions,
4252  options::OPT_fno_ms_extensions, true))))
4253  CmdArgs.push_back("-fms-compatibility");
4254 
4255  VersionTuple MSVT = getToolChain().computeMSVCVersion(&D, Args);
4256  if (!MSVT.empty())
4257  CmdArgs.push_back(
4258  Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4259 
4260  bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4261  if (ImplyVCPPCXXVer) {
4262  StringRef LanguageStandard;
4263  if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4264  LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4265  .Case("c++14", "-std=c++14")
4266  .Case("c++17", "-std=c++17")
4267  .Case("c++latest", "-std=c++2a")
4268  .Default("");
4269  if (LanguageStandard.empty())
4270  D.Diag(clang::diag::warn_drv_unused_argument)
4271  << StdArg->getAsString(Args);
4272  }
4273 
4274  if (LanguageStandard.empty()) {
4275  if (IsMSVC2015Compatible)
4276  LanguageStandard = "-std=c++14";
4277  else
4278  LanguageStandard = "-std=c++11";
4279  }
4280 
4281  CmdArgs.push_back(LanguageStandard.data());
4282  }
4283 
4284  // -fno-borland-extensions is default.
4285  if (Args.hasFlag(options::OPT_fborland_extensions,
4286  options::OPT_fno_borland_extensions, false))
4287  CmdArgs.push_back("-fborland-extensions");
4288 
4289  // -fno-declspec is default, except for PS4.
4290  if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4291  RawTriple.isPS4()))
4292  CmdArgs.push_back("-fdeclspec");
4293  else if (Args.hasArg(options::OPT_fno_declspec))
4294  CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4295 
4296  // -fthreadsafe-static is default, except for MSVC compatibility versions less
4297  // than 19.
4298  if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4299  options::OPT_fno_threadsafe_statics,
4300  !IsWindowsMSVC || IsMSVC2015Compatible))
4301  CmdArgs.push_back("-fno-threadsafe-statics");
4302 
4303  // -fno-delayed-template-parsing is default, except when targeting MSVC.
4304  // Many old Windows SDK versions require this to parse.
4305  // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4306  // compiler. We should be able to disable this by default at some point.
4307  if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4308  options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4309  CmdArgs.push_back("-fdelayed-template-parsing");
4310 
4311  // -fgnu-keywords default varies depending on language; only pass if
4312  // specified.
4313  if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
4314  options::OPT_fno_gnu_keywords))
4315  A->render(Args, CmdArgs);
4316 
4317  if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4318  false))
4319  CmdArgs.push_back("-fgnu89-inline");
4320 
4321  if (Args.hasArg(options::OPT_fno_inline))
4322  CmdArgs.push_back("-fno-inline");
4323 
4324  if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
4325  options::OPT_finline_hint_functions,
4326  options::OPT_fno_inline_functions))
4327  InlineArg->render(Args, CmdArgs);
4328 
4329  Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4330  options::OPT_fno_experimental_new_pass_manager);
4331 
4332  ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4333  RenderObjCOptions(getToolChain(), D, RawTriple, Args, Runtime,
4334  rewriteKind != RK_None, Input, CmdArgs);
4335 
4336  if (Args.hasFlag(options::OPT_fapplication_extension,
4337  options::OPT_fno_application_extension, false))
4338  CmdArgs.push_back("-fapplication-extension");
4339 
4340  // Handle GCC-style exception args.
4341  if (!C.getDriver().IsCLMode())
4342  addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, Runtime,
4343  CmdArgs);
4344 
4345  // Handle exception personalities
4346  Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4347  options::OPT_fseh_exceptions,
4348  options::OPT_fdwarf_exceptions);
4349  if (A) {
4350  const Option &Opt = A->getOption();
4351  if (Opt.matches(options::OPT_fsjlj_exceptions))
4352  CmdArgs.push_back("-fsjlj-exceptions");
4353  if (Opt.matches(options::OPT_fseh_exceptions))
4354  CmdArgs.push_back("-fseh-exceptions");
4355  if (Opt.matches(options::OPT_fdwarf_exceptions))
4356  CmdArgs.push_back("-fdwarf-exceptions");
4357  } else {
4358  switch (getToolChain().GetExceptionModel(Args)) {
4359  default:
4360  break;
4361  case llvm::ExceptionHandling::DwarfCFI:
4362  CmdArgs.push_back("-fdwarf-exceptions");
4363  break;
4364  case llvm::ExceptionHandling::SjLj:
4365  CmdArgs.push_back("-fsjlj-exceptions");
4366  break;
4367  case llvm::ExceptionHandling::WinEH:
4368  CmdArgs.push_back("-fseh-exceptions");
4369  break;
4370  }
4371  }
4372 
4373  // C++ "sane" operator new.
4374  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4375  options::OPT_fno_assume_sane_operator_new))
4376  CmdArgs.push_back("-fno-assume-sane-operator-new");
4377 
4378  // -frelaxed-template-template-args is off by default, as it is a severe
4379  // breaking change until a corresponding change to template partial ordering
4380  // is provided.
4381  if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4382  options::OPT_fno_relaxed_template_template_args, false))
4383  CmdArgs.push_back("-frelaxed-template-template-args");
4384 
4385  // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4386  // most platforms.
4387  if (Args.hasFlag(options::OPT_fsized_deallocation,
4388  options::OPT_fno_sized_deallocation, false))
4389  CmdArgs.push_back("-fsized-deallocation");
4390 
4391  // -faligned-allocation is on by default in C++17 onwards and otherwise off
4392  // by default.
4393  if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4394  options::OPT_fno_aligned_allocation,
4395  options::OPT_faligned_new_EQ)) {
4396  if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4397  CmdArgs.push_back("-fno-aligned-allocation");
4398  else
4399  CmdArgs.push_back("-faligned-allocation");
4400  }
4401 
4402  // The default new alignment can be specified using a dedicated option or via
4403  // a GCC-compatible option that also turns on aligned allocation.
4404  if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4405  options::OPT_faligned_new_EQ))
4406  CmdArgs.push_back(
4407  Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4408 
4409  // -fconstant-cfstrings is default, and may be subject to argument translation
4410  // on Darwin.
4411  if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4412  options::OPT_fno_constant_cfstrings) ||
4413  !Args.hasFlag(options::OPT_mconstant_cfstrings,
4414  options::OPT_mno_constant_cfstrings))
4415  CmdArgs.push_back("-fno-constant-cfstrings");
4416 
4417  // -fno-pascal-strings is default, only pass non-default.
4418  if (Args.hasFlag(options::OPT_fpascal_strings,
4419  options::OPT_fno_pascal_strings, false))
4420  CmdArgs.push_back("-fpascal-strings");
4421 
4422  // Honor -fpack-struct= and -fpack-struct, if given. Note that
4423  // -fno-pack-struct doesn't apply to -fpack-struct=.
4424  if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4425  std::string PackStructStr = "-fpack-struct=";
4426  PackStructStr += A->getValue();
4427  CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4428  } else if (Args.hasFlag(options::OPT_fpack_struct,
4429  options::OPT_fno_pack_struct, false)) {
4430  CmdArgs.push_back("-fpack-struct=1");
4431  }
4432 
4433  // Handle -fmax-type-align=N and -fno-type-align
4434  bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4435  if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4436  if (!SkipMaxTypeAlign) {
4437  std::string MaxTypeAlignStr = "-fmax-type-align=";
4438  MaxTypeAlignStr += A->getValue();
4439  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4440  }
4441  } else if (RawTriple.isOSDarwin()) {
4442  if (!SkipMaxTypeAlign) {
4443  std::string MaxTypeAlignStr = "-fmax-type-align=16";
4444  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4445  }
4446  }
4447 
4448  if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
4449  CmdArgs.push_back("-Qn");
4450 
4451  // -fcommon is the default unless compiling kernel code or the target says so
4452  bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4453  if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4454  !NoCommonDefault))
4455  CmdArgs.push_back("-fno-common");
4456 
4457  // -fsigned-bitfields is default, and clang doesn't yet support
4458  // -funsigned-bitfields.
4459  if (!Args.hasFlag(options::OPT_fsigned_bitfields,
4460  options::OPT_funsigned_bitfields))
4461  D.Diag(diag::warn_drv_clang_unsupported)
4462  << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
4463 
4464  // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
4465  if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
4466  D.Diag(diag::err_drv_clang_unsupported)
4467  << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
4468 
4469  // -finput_charset=UTF-8 is default. Reject others
4470  if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
4471  StringRef value = inputCharset->getValue();
4472  if (!value.equals_lower("utf-8"))
4473  D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
4474  << value;
4475  }
4476 
4477  // -fexec_charset=UTF-8 is default. Reject others
4478  if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
4479  StringRef value = execCharset->getValue();
4480  if (!value.equals_lower("utf-8"))
4481  D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
4482  << value;
4483  }
4484 
4485  RenderDiagnosticsOptions(D, Args, CmdArgs);
4486 
4487  // -fno-asm-blocks is default.
4488  if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
4489  false))
4490  CmdArgs.push_back("-fasm-blocks");
4491 
4492  // -fgnu-inline-asm is default.
4493  if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
4494  options::OPT_fno_gnu_inline_asm, true))
4495  CmdArgs.push_back("-fno-gnu-inline-asm");
4496 
4497  // Enable vectorization per default according to the optimization level
4498  // selected. For optimization levels that want vectorization we use the alias
4499  // option to simplify the hasFlag logic.
4500  bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
4501  OptSpecifier VectorizeAliasOption =
4502  EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
4503  if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
4504  options::OPT_fno_vectorize, EnableVec))
4505  CmdArgs.push_back("-vectorize-loops");
4506 
4507  // -fslp-vectorize is enabled based on the optimization level selected.
4508  bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
4509  OptSpecifier SLPVectAliasOption =
4510  EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
4511  if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
4512  options::OPT_fno_slp_vectorize, EnableSLPVec))
4513  CmdArgs.push_back("-vectorize-slp");
4514 
4515  ParseMPreferVectorWidth(D, Args, CmdArgs);
4516 
4517  if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
4518  A->render(Args, CmdArgs);
4519 
4520  if (Arg *A = Args.getLastArg(
4521  options::OPT_fsanitize_undefined_strip_path_components_EQ))
4522  A->render(Args, CmdArgs);
4523 
4524  // -fdollars-in-identifiers default varies depending on platform and
4525  // language; only pass if specified.
4526  if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
4527  options::OPT_fno_dollars_in_identifiers)) {
4528  if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
4529  CmdArgs.push_back("-fdollars-in-identifiers");
4530  else
4531  CmdArgs.push_back("-fno-dollars-in-identifiers");
4532  }
4533 
4534  // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
4535  // practical purposes.
4536  if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
4537  options::OPT_fno_unit_at_a_time)) {
4538  if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
4539  D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
4540  }
4541 
4542  if (Args.hasFlag(options::OPT_fapple_pragma_pack,
4543  options::OPT_fno_apple_pragma_pack, false))
4544  CmdArgs.push_back("-fapple-pragma-pack");
4545 
4546  if (Args.hasFlag(options::OPT_fsave_optimization_record,
4547  options::OPT_foptimization_record_file_EQ,
4548  options::OPT_fno_save_optimization_record, false)) {
4549  CmdArgs.push_back("-opt-record-file");
4550 
4551  const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
4552  if (A) {
4553  CmdArgs.push_back(A->getValue());
4554  } else {
4555  SmallString<128> F;
4556 
4557  if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
4558  if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
4559  F = FinalOutput->getValue();
4560  }
4561 
4562  if (F.empty()) {
4563  // Use the input filename.
4564  F = llvm::sys::path::stem(Input.getBaseInput());
4565 
4566  // If we're compiling for an offload architecture (i.e. a CUDA device),
4567  // we need to make the file name for the device compilation different
4568  // from the host compilation.
4571  llvm::sys::path::replace_extension(F, "");
4573  Triple.normalize());
4574  F += "-";
4575  F += JA.getOffloadingArch();
4576  }
4577  }
4578 
4579  llvm::sys::path::replace_extension(F, "opt.yaml");
4580  CmdArgs.push_back(Args.MakeArgString(F));
4581  }
4582  }
4583 
4584  bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
4585  options::OPT_fno_rewrite_imports, false);
4586  if (RewriteImports)
4587  CmdArgs.push_back("-frewrite-imports");
4588 
4589  // Enable rewrite includes if the user's asked for it or if we're generating
4590  // diagnostics.
4591  // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
4592  // nice to enable this when doing a crashdump for modules as well.
4593  if (Args.hasFlag(options::OPT_frewrite_includes,
4594  options::OPT_fno_rewrite_includes, false) ||
4595  (C.isForDiagnostics() && (RewriteImports || !HaveModules)))
4596  CmdArgs.push_back("-frewrite-includes");
4597 
4598  // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
4599  if (Arg *A = Args.getLastArg(options::OPT_traditional,
4600  options::OPT_traditional_cpp)) {
4601  if (isa<PreprocessJobAction>(JA))
4602  CmdArgs.push_back("-traditional-cpp");
4603  else
4604  D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
4605  }
4606 
4607  Args.AddLastArg(CmdArgs, options::OPT_dM);
4608  Args.AddLastArg(CmdArgs, options::OPT_dD);
4609 
4610  // Handle serialized diagnostics.
4611  if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
4612  CmdArgs.push_back("-serialize-diagnostic-file");
4613  CmdArgs.push_back(Args.MakeArgString(A->getValue()));
4614  }
4615 
4616  if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
4617  CmdArgs.push_back("-fretain-comments-from-system-headers");
4618 
4619  // Forward -fcomment-block-commands to -cc1.
4620  Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
4621  // Forward -fparse-all-comments to -cc1.
4622  Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
4623 
4624  // Turn -fplugin=name.so into -load name.so
4625  for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
4626  CmdArgs.push_back("-load");
4627  CmdArgs.push_back(A->getValue());
4628  A->claim();
4629  }
4630 
4631  // Setup statistics file output.
4632  SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
4633  if (!StatsFile.empty())
4634  CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
4635 
4636  // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
4637  // parser.
4638  // -finclude-default-header flag is for preprocessor,
4639  // do not pass it to other cc1 commands when save-temps is enabled
4640  if (C.getDriver().isSaveTempsEnabled() &&
4641  !isa<PreprocessJobAction>(JA)) {
4642  for (auto Arg : Args.filtered(options::OPT_Xclang)) {
4643  Arg->claim();
4644  if (StringRef(Arg->getValue()) != "-finclude-default-header")
4645  CmdArgs.push_back(Arg->getValue());
4646  }
4647  }
4648  else {
4649  Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
4650  }
4651  for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
4652  A->claim();
4653 
4654  // We translate this by hand to the -cc1 argument, since nightly test uses
4655  // it and developers have been trained to spell it with -mllvm. Both
4656  // spellings are now deprecated and should be removed.
4657  if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
4658  CmdArgs.push_back("-disable-llvm-optzns");
4659  } else {
4660  A->render(Args, CmdArgs);
4661  }
4662  }
4663 
4664  // With -save-temps, we want to save the unoptimized bitcode output from the
4665  // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
4666  // by the frontend.
4667  // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
4668  // has slightly different breakdown between stages.
4669  // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
4670  // pristine IR generated by the frontend. Ideally, a new compile action should
4671  // be added so both IR can be captured.
4672  if (C.getDriver().isSaveTempsEnabled() &&
4673  !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
4674  isa<CompileJobAction>(JA))
4675  CmdArgs.push_back("-disable-llvm-passes");
4676 
4677  if (Output.getType() == types::TY_Dependencies) {
4678  // Handled with other dependency code.
4679  } else if (Output.isFilename()) {
4680  CmdArgs.push_back("-o");
4681  CmdArgs.push_back(Output.getFilename());
4682  } else {
4683  assert(Output.isNothing() && "Invalid output.");
4684  }
4685 
4686  addDashXForInput(Args, Input, CmdArgs);
4687 
4688  if (Input.isFilename())
4689  CmdArgs.push_back(Input.getFilename());
4690  else
4691  Input.getInputArg().renderAsInput(Args, CmdArgs);
4692 
4693  Args.AddAllArgs(CmdArgs, options::OPT_undef);
4694 
4695  const char *Exec = D.getClangProgramPath();
4696 
4697  // Optionally embed the -cc1 level arguments into the debug info, for build
4698  // analysis.
4699  // Also record command line arguments into the debug info if
4700  // -grecord-gcc-switches options is set on.
4701  // By default, -gno-record-gcc-switches is set on and no recording.
4702  if (getToolChain().UseDwarfDebugFlags() ||
4703  Args.hasFlag(options::OPT_grecord_gcc_switches,
4704  options::OPT_gno_record_gcc_switches, false)) {
4705  ArgStringList OriginalArgs;
4706  for (const auto &Arg : Args)
4707  Arg->render(Args, OriginalArgs);
4708 
4709  SmallString<256> Flags;
4710  Flags += Exec;
4711  for (const char *OriginalArg : OriginalArgs) {
4712  SmallString<128> EscapedArg;
4713  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
4714  Flags += " ";
4715  Flags += EscapedArg;
4716  }
4717  CmdArgs.push_back("-dwarf-debug-flags");
4718  CmdArgs.push_back(Args.MakeArgString(Flags));
4719  }
4720 
4721  if (IsCuda) {
4722  // Host-side cuda compilation receives all device-side outputs in a single
4723  // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
4724  if (Inputs.size() > 1) {
4725  assert(Inputs.size() == 2 && "More than one GPU binary!");
4726  CmdArgs.push_back("-fcuda-include-gpubinary");
4727  CmdArgs.push_back(Inputs[1].getFilename());
4728  }
4729 
4730  if (Args.hasFlag(options::OPT_fcuda_rdc, options::OPT_fno_cuda_rdc, false))
4731  CmdArgs.push_back("-fcuda-rdc");
4732  if (Args.hasFlag(options::OPT_fcuda_short_ptr,
4733  options::OPT_fno_cuda_short_ptr, false))
4734  CmdArgs.push_back("-fcuda-short-ptr");
4735  }
4736 
4737  // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
4738  // to specify the result of the compile phase on the host, so the meaningful
4739  // device declarations can be identified. Also, -fopenmp-is-device is passed
4740  // along to tell the frontend that it is generating code for a device, so that
4741  // only the relevant declarations are emitted.
4742  if (IsOpenMPDevice) {
4743  CmdArgs.push_back("-fopenmp-is-device");
4744  if (Inputs.size() == 2) {
4745  CmdArgs.push_back("-fopenmp-host-ir-file-path");
4746  CmdArgs.push_back(Args.MakeArgString(Inputs.back().getFilename()));
4747  }
4748  }
4749 
4750  // For all the host OpenMP offloading compile jobs we need to pass the targets
4751  // information using -fopenmp-targets= option.
4753  SmallString<128> TargetInfo("-fopenmp-targets=");
4754 
4755  Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
4756  assert(Tgts && Tgts->getNumValues() &&
4757  "OpenMP offloading has to have targets specified.");
4758  for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
4759  if (i)
4760  TargetInfo += ',';
4761  // We need to get the string from the triple because it may be not exactly
4762  // the same as the one we get directly from the arguments.
4763  llvm::Triple T(Tgts->getValue(i));
4764  TargetInfo += T.getTriple();
4765  }
4766  CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
4767  }
4768 
4769  bool WholeProgramVTables =
4770  Args.hasFlag(options::OPT_fwhole_program_vtables,
4771  options::OPT_fno_whole_program_vtables, false);
4772  if (WholeProgramVTables) {
4773  if (!D.isUsingLTO())
4774  D.Diag(diag::err_drv_argument_only_allowed_with)
4775  << "-fwhole-program-vtables"
4776  << "-flto";
4777  CmdArgs.push_back("-fwhole-program-vtables");
4778  }
4779 
4780  if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
4781  options::OPT_fno_experimental_isel)) {
4782  CmdArgs.push_back("-mllvm");
4783  if (A->getOption().matches(options::OPT_fexperimental_isel)) {
4784  CmdArgs.push_back("-global-isel=1");
4785 
4786  // GISel is on by default on AArch64 -O0, so don't bother adding
4787  // the fallback remarks for it. Other combinations will add a warning of
4788  // some kind.
4789  bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
4790  bool IsOptLevelSupported = false;
4791 
4792  Arg *A = Args.getLastArg(options::OPT_O_Group);
4793  if (Triple.getArch() == llvm::Triple::aarch64) {
4794  if (!A || A->getOption().matches(options::OPT_O0))
4795  IsOptLevelSupported = true;
4796  }
4797  if (!IsArchSupported || !IsOptLevelSupported) {
4798  CmdArgs.push_back("-mllvm");
4799  CmdArgs.push_back("-global-isel-abort=2");
4800 
4801  if (!IsArchSupported)
4802  D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
4803  else
4804  D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
4805  }
4806  } else {
4807  CmdArgs.push_back("-global-isel=0");
4808  }
4809  }
4810 
4811  if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
4812  options::OPT_fno_force_enable_int128)) {
4813  if (A->getOption().matches(options::OPT_fforce_enable_int128))
4814  CmdArgs.push_back("-fforce-enable-int128");
4815  }
4816 
4817  if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
4818  options::OPT_fno_complete_member_pointers, false))
4819  CmdArgs.push_back("-fcomplete-member-pointers");
4820 
4821  if (Arg *A = Args.getLastArg(options::OPT_moutline,
4822  options::OPT_mno_outline)) {
4823  if (A->getOption().matches(options::OPT_moutline)) {
4824  // We only support -moutline in AArch64 right now. If we're not compiling
4825  // for AArch64, emit a warning and ignore the flag. Otherwise, add the
4826  // proper mllvm flags.
4827  if (Triple.getArch() != llvm::Triple::aarch64) {
4828  D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
4829  } else {
4830  CmdArgs.push_back("-mllvm");
4831  CmdArgs.push_back("-enable-machine-outliner");
4832  }
4833  } else {
4834  // Disable all outlining behaviour.
4835  CmdArgs.push_back("-mllvm");
4836  CmdArgs.push_back("-enable-machine-outliner=never");
4837  }
4838  }
4839 
4840  if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
4841  getToolChain().getTriple().isOSBinFormatELF() &&
4842  getToolChain().useIntegratedAs()))
4843  CmdArgs.push_back("-faddrsig");
4844 
4845  // Finally add the compile command to the compilation.
4846  if (Args.hasArg(options::OPT__SLASH_fallback) &&
4847  Output.getType() == types::TY_Object &&
4848  (InputType == types::TY_C || InputType == types::TY_CXX)) {
4849  auto CLCommand =
4850  getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
4851  C.addCommand(llvm::make_unique<FallbackCommand>(
4852  JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
4853  } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
4854  isa<PrecompileJobAction>(JA)) {
4855  // In /fallback builds, run the main compilation even if the pch generation
4856  // fails, so that the main compilation's fallback to cl.exe runs.
4857  C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
4858  CmdArgs, Inputs));
4859  } else {
4860  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
4861  }
4862 
4863  if (Arg *A = Args.getLastArg(options::OPT_pg))
4864  if (Args.hasArg(options::OPT_fomit_frame_pointer))
4865  D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
4866  << A->getAsString(Args);
4867 
4868  // Claim some arguments which clang supports automatically.
4869 
4870  // -fpch-preprocess is used with gcc to add a special marker in the output to
4871  // include the PCH file. Clang's PTH solution is completely transparent, so we
4872  // do not need to deal with it at all.
4873  Args.ClaimAllArgs(options::OPT_fpch_preprocess);
4874 
4875  // Claim some arguments which clang doesn't support, but we don't
4876  // care to warn the user about.
4877  Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
4878  Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
4879 
4880  // Disable warnings for clang -E -emit-llvm foo.c
4881  Args.ClaimAllArgs(options::OPT_emit_llvm);
4882 }
4883 
4885  // CAUTION! The first constructor argument ("clang") is not arbitrary,
4886  // as it is for other tools. Some operations on a Tool actually test
4887  // whether that tool is Clang based on the Tool's Name as a string.
4888  : Tool("clang", "clang frontend", TC, RF_Full) {}
4889 
4891 
4892 /// Add options related to the Objective-C runtime/ABI.
4893 ///
4894 /// Returns true if the runtime is non-fragile.
4895 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
4896  ArgStringList &cmdArgs,
4897  RewriteKind rewriteKind) const {
4898  // Look for the controlling runtime option.
4899  Arg *runtimeArg =
4900  args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
4901  options::OPT_fobjc_runtime_EQ);
4902 
4903  // Just forward -fobjc-runtime= to the frontend. This supercedes
4904  // options about fragility.
4905  if (runtimeArg &&
4906  runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
4907  ObjCRuntime runtime;
4908  StringRef value = runtimeArg->getValue();
4909  if (runtime.tryParse(value)) {
4910  getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
4911  << value;
4912  }
4913  if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
4914  (runtime.getVersion() >= VersionTuple(2, 0)))
4915  if (!getToolChain().getTriple().isOSBinFormatELF()) {
4917  diag::err_drv_gnustep_objc_runtime_incompatible_binary)
4918  << runtime.getVersion().getMajor();
4919  }
4920 
4921  runtimeArg->render(args, cmdArgs);
4922  return runtime;
4923  }
4924 
4925  // Otherwise, we'll need the ABI "version". Version numbers are
4926  // slightly confusing for historical reasons:
4927  // 1 - Traditional "fragile" ABI
4928  // 2 - Non-fragile ABI, version 1
4929  // 3 - Non-fragile ABI, version 2
4930  unsigned objcABIVersion = 1;
4931  // If -fobjc-abi-version= is present, use that to set the version.
4932  if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
4933  StringRef value = abiArg->getValue();
4934  if (value == "1")
4935  objcABIVersion = 1;
4936  else if (value == "2")
4937  objcABIVersion = 2;
4938  else if (value == "3")
4939  objcABIVersion = 3;
4940  else
4941  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
4942  } else {
4943  // Otherwise, determine if we are using the non-fragile ABI.
4944  bool nonFragileABIIsDefault =
4945  (rewriteKind == RK_NonFragile ||
4946  (rewriteKind == RK_None &&
4948  if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
4949  options::OPT_fno_objc_nonfragile_abi,
4950  nonFragileABIIsDefault)) {
4951 // Determine the non-fragile ABI version to use.
4952 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
4953  unsigned nonFragileABIVersion = 1;
4954 #else
4955  unsigned nonFragileABIVersion = 2;
4956 #endif
4957 
4958  if (Arg *abiArg =
4959  args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
4960  StringRef value = abiArg->getValue();
4961  if (value == "1")
4962  nonFragileABIVersion = 1;
4963  else if (value == "2")
4964  nonFragileABIVersion = 2;
4965  else
4966  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
4967  << value;
4968  }
4969 
4970  objcABIVersion = 1 + nonFragileABIVersion;
4971  } else {
4972  objcABIVersion = 1;
4973  }
4974  }
4975 
4976  // We don't actually care about the ABI version other than whether
4977  // it's non-fragile.
4978  bool isNonFragile = objcABIVersion != 1;
4979 
4980  // If we have no runtime argument, ask the toolchain for its default runtime.
4981  // However, the rewriter only really supports the Mac runtime, so assume that.
4982  ObjCRuntime runtime;
4983  if (!runtimeArg) {
4984  switch (rewriteKind) {
4985  case RK_None:
4986  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
4987  break;
4988  case RK_Fragile:
4989  runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
4990  break;
4991  case RK_NonFragile:
4992  runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
4993  break;
4994  }
4995 
4996  // -fnext-runtime
4997  } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
4998  // On Darwin, make this use the default behavior for the toolchain.
4999  if (getToolChain().getTriple().isOSDarwin()) {
5000  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5001 
5002  // Otherwise, build for a generic macosx port.
5003  } else {
5004  runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5005  }
5006 
5007  // -fgnu-runtime
5008  } else {
5009  assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
5010  // Legacy behaviour is to target the gnustep runtime if we are in
5011  // non-fragile mode or the GCC runtime in fragile mode.
5012  if (isNonFragile)
5013  runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
5014  else
5015  runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
5016  }
5017 
5018  cmdArgs.push_back(
5019  args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
5020  return runtime;
5021 }
5022 
5023 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
5024  bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
5025  I += HaveDash;
5026  return !HaveDash;
5027 }
5028 
5029 namespace {
5030 struct EHFlags {
5031  bool Synch = false;
5032  bool Asynch = false;
5033  bool NoUnwindC = false;
5034 };
5035 } // end anonymous namespace
5036 
5037 /// /EH controls whether to run destructor cleanups when exceptions are
5038 /// thrown. There are three modifiers:
5039 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
5040 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
5041 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
5042 /// - c: Assume that extern "C" functions are implicitly nounwind.
5043 /// The default is /EHs-c-, meaning cleanups are disabled.
5044 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
5045  EHFlags EH;
5046 
5047  std::vector<std::string> EHArgs =
5048  Args.getAllArgValues(options::OPT__SLASH_EH);
5049  for (auto EHVal : EHArgs) {
5050  for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
5051  switch (EHVal[I]) {
5052  case 'a':
5053  EH.Asynch = maybeConsumeDash(EHVal, I);
5054  if (EH.Asynch)
5055  EH.Synch = false;
5056  continue;
5057  case 'c':
5058  EH.NoUnwindC = maybeConsumeDash(EHVal, I);
5059  continue;
5060  case 's':
5061  EH.Synch = maybeConsumeDash(EHVal, I);
5062  if (EH.Synch)
5063  EH.Asynch = false;
5064  continue;
5065  default:
5066  break;
5067  }
5068  D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
5069  break;
5070  }
5071  }
5072  // The /GX, /GX- flags are only processed if there are not /EH flags.
5073  // The default is that /GX is not specified.
5074  if (EHArgs.empty() &&
5075  Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
5076  /*default=*/false)) {
5077  EH.Synch = true;
5078  EH.NoUnwindC = true;
5079  }
5080 
5081  return EH;
5082 }
5083 
5084 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
5085  ArgStringList &CmdArgs,
5087  bool *EmitCodeView) const {
5088  unsigned RTOptionID = options::OPT__SLASH_MT;
5089 
5090  if (Args.hasArg(options::OPT__SLASH_LDd))
5091  // The /LDd option implies /MTd. The dependent lib part can be overridden,
5092  // but defining _DEBUG is sticky.
5093  RTOptionID = options::OPT__SLASH_MTd;
5094 
5095  if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
5096  RTOptionID = A->getOption().getID();
5097 
5098  StringRef FlagForCRT;
5099  switch (RTOptionID) {
5100  case options::OPT__SLASH_MD:
5101  if (Args.hasArg(options::OPT__SLASH_LDd))
5102  CmdArgs.push_back("-D_DEBUG");
5103  CmdArgs.push_back("-D_MT");
5104  CmdArgs.push_back("-D_DLL");
5105  FlagForCRT = "--dependent-lib=msvcrt";
5106  break;
5107  case options::OPT__SLASH_MDd:
5108  CmdArgs.push_back("-D_DEBUG");
5109  CmdArgs.push_back("-D_MT");
5110  CmdArgs.push_back("-D_DLL");
5111  FlagForCRT = "--dependent-lib=msvcrtd";
5112  break;
5113  case options::OPT__SLASH_MT:
5114  if (Args.hasArg(options::OPT__SLASH_LDd))
5115  CmdArgs.push_back("-D_DEBUG");
5116  CmdArgs.push_back("-D_MT");
5117  CmdArgs.push_back("-flto-visibility-public-std");
5118  FlagForCRT = "--dependent-lib=libcmt";
5119  break;
5120  case options::OPT__SLASH_MTd:
5121  CmdArgs.push_back("-D_DEBUG");
5122  CmdArgs.push_back("-D_MT");
5123  CmdArgs.push_back("-flto-visibility-public-std");
5124  FlagForCRT = "--dependent-lib=libcmtd";
5125  break;
5126  default:
5127  llvm_unreachable("Unexpected option ID.");
5128  }
5129 
5130  if (Args.hasArg(options::OPT__SLASH_Zl)) {
5131  CmdArgs.push_back("-D_VC_NODEFAULTLIB");
5132  } else {
5133  CmdArgs.push_back(FlagForCRT.data());
5134 
5135  // This provides POSIX compatibility (maps 'open' to '_open'), which most
5136  // users want. The /Za flag to cl.exe turns this off, but it's not
5137  // implemented in clang.
5138  CmdArgs.push_back("--dependent-lib=oldnames");
5139  }
5140 
5141  if (Arg *A = Args.getLastArg(options::OPT_show_includes))
5142  A->render(Args, CmdArgs);
5143 
5144  // This controls whether or not we emit RTTI data for polymorphic types.
5145  if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
5146  /*default=*/false))
5147  CmdArgs.push_back("-fno-rtti-data");
5148 
5149  // This controls whether or not we emit stack-protector instrumentation.
5150  // In MSVC, Buffer Security Check (/GS) is on by default.
5151  if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
5152  /*default=*/true)) {
5153  CmdArgs.push_back("-stack-protector");
5154  CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
5155  }
5156 
5157  // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
5158  if (Arg *DebugInfoArg =
5159  Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
5160  options::OPT_gline_tables_only)) {
5161  *EmitCodeView = true;
5162  if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
5163  *DebugInfoKind = codegenoptions::LimitedDebugInfo;
5164  else
5165  *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
5166  CmdArgs.push_back("-gcodeview");
5167  } else {
5168  *EmitCodeView = false;
5169  }
5170 
5171  const Driver &D = getToolChain().getDriver();
5172  EHFlags EH = parseClangCLEHFlags(D, Args);
5173  if (EH.Synch || EH.Asynch) {
5174  if (types::isCXX(InputType))
5175  CmdArgs.push_back("-fcxx-exceptions");
5176  CmdArgs.push_back("-fexceptions");
5177  }
5178  if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5179  CmdArgs.push_back("-fexternc-nounwind");
5180 
5181  // /EP should expand to -E -P.
5182  if (Args.hasArg(options::OPT__SLASH_EP)) {
5183  CmdArgs.push_back("-E");
5184  CmdArgs.push_back("-P");
5185  }
5186 
5187  unsigned VolatileOptionID;
5188  if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5189  getToolChain().getArch() == llvm::Triple::x86)
5190  VolatileOptionID = options::OPT__SLASH_volatile_ms;
5191  else
5192  VolatileOptionID = options::OPT__SLASH_volatile_iso;
5193 
5194  if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5195  VolatileOptionID = A->getOption().getID();
5196 
5197  if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5198  CmdArgs.push_back("-fms-volatile");
5199 
5200  Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5201  Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5202  if (MostGeneralArg && BestCaseArg)
5203  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5204  << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5205 
5206  if (MostGeneralArg) {
5207  Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5208  Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5209  Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5210 
5211  Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5212  Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5213  if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5214  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5215  << FirstConflict->getAsString(Args)
5216  << SecondConflict->getAsString(Args);
5217 
5218  if (SingleArg)
5219  CmdArgs.push_back("-fms-memptr-rep=single");
5220  else if (MultipleArg)
5221  CmdArgs.push_back("-fms-memptr-rep=multiple");
5222  else
5223  CmdArgs.push_back("-fms-memptr-rep=virtual");
5224  }
5225 
5226  // Parse the default calling convention options.
5227  if (Arg *CCArg =
5228  Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5229  options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5230  options::OPT__SLASH_Gregcall)) {
5231  unsigned DCCOptId = CCArg->getOption().getID();
5232  const char *DCCFlag = nullptr;
5233  bool ArchSupported = true;
5234  llvm::Triple::ArchType Arch = getToolChain().getArch();
5235  switch (DCCOptId) {
5236  case options::OPT__SLASH_Gd:
5237  DCCFlag = "-fdefault-calling-conv=cdecl";
5238  break;
5239  case options::OPT__SLASH_Gr:
5240  ArchSupported = Arch == llvm::Triple::x86;
5241  DCCFlag = "-fdefault-calling-conv=fastcall";
5242  break;
5243  case options::OPT__SLASH_Gz:
5244  ArchSupported = Arch == llvm::Triple::x86;
5245  DCCFlag = "-fdefault-calling-conv=stdcall";
5246  break;
5247  case options::OPT__SLASH_Gv:
5248  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5249  DCCFlag = "-fdefault-calling-conv=vectorcall";
5250  break;
5251  case options::OPT__SLASH_Gregcall:
5252  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5253  DCCFlag = "-fdefault-calling-conv=regcall";
5254  break;
5255  }
5256 
5257  // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5258  if (ArchSupported && DCCFlag)
5259  CmdArgs.push_back(DCCFlag);
5260  }
5261 
5262  if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
5263  A->render(Args, CmdArgs);
5264 
5265  if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5266  CmdArgs.push_back("-fdiagnostics-format");
5267  if (Args.hasArg(options::OPT__SLASH_fallback))
5268  CmdArgs.push_back("msvc-fallback");
5269  else
5270  CmdArgs.push_back("msvc");
5271  }
5272 
5273  if (Args.hasArg(options::OPT__SLASH_Guard) &&
5274  Args.getLastArgValue(options::OPT__SLASH_Guard).equals_lower("cf"))
5275  CmdArgs.push_back("-cfguard");
5276 }
5277 
5278 visualstudio::Compiler *Clang::getCLFallback() const {
5279  if (!CLFallback)
5280  CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5281  return CLFallback.get();
5282 }
5283 
5284 
5285 const char *Clang::getBaseInputName(const ArgList &Args,
5286  const InputInfo &Input) {
5287  return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5288 }
5289 
5290 const char *Clang::getBaseInputStem(const ArgList &Args,
5291  const InputInfoList &Inputs) {
5292  const char *Str = getBaseInputName(Args, Inputs[0]);
5293 
5294  if (const char *End = strrchr(Str, '.'))
5295  return Args.MakeArgString(std::string(Str, End));
5296 
5297  return Str;
5298 }
5299 
5300 const char *Clang::getDependencyFileName(const ArgList &Args,
5301  const InputInfoList &Inputs) {
5302  // FIXME: Think about this more.
5303  std::string Res;
5304 
5305  if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5306  std::string Str(OutputOpt->getValue());
5307  Res = Str.substr(0, Str.rfind('.'));
5308  } else {
5309  Res = getBaseInputStem(Args, Inputs);
5310  }
5311  return Args.MakeArgString(Res + ".d");
5312 }
5313 
5314 // Begin ClangAs
5315 
5316 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5317  ArgStringList &CmdArgs) const {
5318  StringRef CPUName;
5319  StringRef ABIName;
5320  const llvm::Triple &Triple = getToolChain().getTriple();
5321  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5322 
5323  CmdArgs.push_back("-target-abi");
5324  CmdArgs.push_back(ABIName.data());
5325 }
5326 
5327 void ClangAs::AddX86TargetArgs(const ArgList &Args,
5328  ArgStringList &CmdArgs) const {
5329  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5330  StringRef Value = A->getValue();
5331  if (Value == "intel" || Value == "att") {
5332  CmdArgs.push_back("-mllvm");
5333  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5334  } else {
5335  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
5336  << A->getOption().getName() << Value;
5337  }
5338  }
5339 }
5340 
5342  const InputInfo &Output, const InputInfoList &Inputs,
5343  const ArgList &Args,
5344  const char *LinkingOutput) const {
5345  ArgStringList CmdArgs;
5346 
5347  assert(Inputs.size() == 1 && "Unexpected number of inputs.");
5348  const InputInfo &Input = Inputs[0];
5349 
5350  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
5351  const std::string &TripleStr = Triple.getTriple();
5352  const auto &D = getToolChain().getDriver();
5353 
5354  // Don't warn about "clang -w -c foo.s"
5355  Args.ClaimAllArgs(options::OPT_w);
5356  // and "clang -emit-llvm -c foo.s"
5357  Args.ClaimAllArgs(options::OPT_emit_llvm);
5358 
5359  claimNoWarnArgs(Args);
5360 
5361  // Invoke ourselves in -cc1as mode.
5362  //
5363  // FIXME: Implement custom jobs for internal actions.
5364  CmdArgs.push_back("-cc1as");
5365 
5366  // Add the "effective" target triple.
5367  CmdArgs.push_back("-triple");
5368  CmdArgs.push_back(Args.MakeArgString(TripleStr));
5369 
5370  // Set the output mode, we currently only expect to be used as a real
5371  // assembler.
5372  CmdArgs.push_back("-filetype");
5373  CmdArgs.push_back("obj");
5374 
5375  // Set the main file name, so that debug info works even with
5376  // -save-temps or preprocessed assembly.
5377  CmdArgs.push_back("-main-file-name");
5378  CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
5379 
5380  // Add the target cpu
5381  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
5382  if (!CPU.empty()) {
5383  CmdArgs.push_back("-target-cpu");
5384  CmdArgs.push_back(Args.MakeArgString(CPU));
5385  }
5386 
5387  // Add the target features
5388  getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
5389 
5390  // Ignore explicit -force_cpusubtype_ALL option.
5391  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
5392 
5393  // Pass along any -I options so we get proper .include search paths.
5394  Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
5395 
5396  // Determine the original source input.
5397  const Action *SourceAction = &JA;
5398  while (SourceAction->getKind() != Action::InputClass) {
5399  assert(!SourceAction->getInputs().empty() && "unexpected root action!");
5400  SourceAction = SourceAction->getInputs()[0];
5401  }
5402 
5403  // Forward -g and handle debug info related flags, assuming we are dealing
5404  // with an actual assembly file.
5405  bool WantDebug = false;
5406  unsigned DwarfVersion = 0;
5407  Args.ClaimAllArgs(options::OPT_g_Group);
5408  if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
5409  WantDebug = !A->getOption().matches(options::OPT_g0) &&
5410  !A->getOption().matches(options::OPT_ggdb0);
5411  if (WantDebug)
5412  DwarfVersion = DwarfVersionNum(A->getSpelling());
5413  }
5414  if (DwarfVersion == 0)
5415  DwarfVersion = getToolChain().GetDefaultDwarfVersion();
5416 
5418 
5419  if (SourceAction->getType() == types::TY_Asm ||
5420  SourceAction->getType() == types::TY_PP_Asm) {
5421  // You might think that it would be ok to set DebugInfoKind outside of
5422  // the guard for source type, however there is a test which asserts
5423  // that some assembler invocation receives no -debug-info-kind,
5424  // and it's not clear whether that test is just overly restrictive.
5425  DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
5427  // Add the -fdebug-compilation-dir flag if needed.
5428  addDebugCompDirArg(Args, CmdArgs);
5429 
5430  addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
5431 
5432  // Set the AT_producer to the clang version when using the integrated
5433  // assembler on assembly source files.
5434  CmdArgs.push_back("-dwarf-debug-producer");
5435  CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
5436 
5437  // And pass along -I options
5438  Args.AddAllArgs(CmdArgs, options::OPT_I);
5439  }
5440  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
5441  llvm::DebuggerKind::Default);
5442  RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
5443 
5444 
5445  // Handle -fPIC et al -- the relocation-model affects the assembler
5446  // for some targets.
5447  llvm::Reloc::Model RelocationModel;
5448  unsigned PICLevel;
5449  bool IsPIE;
5450  std::tie(RelocationModel, PICLevel, IsPIE) =
5451  ParsePICArgs(getToolChain(), Args);
5452 
5453  const char *RMName = RelocationModelName(RelocationModel);
5454  if (RMName) {
5455  CmdArgs.push_back("-mrelocation-model");
5456  CmdArgs.push_back(RMName);
5457  }
5458 
5459  // Optionally embed the -cc1as level arguments into the debug info, for build
5460  // analysis.
5461  if (getToolChain().UseDwarfDebugFlags()) {
5462  ArgStringList OriginalArgs;
5463  for (const auto &Arg : Args)
5464  Arg->render(Args, OriginalArgs);
5465 
5466  SmallString<256> Flags;
5467  const char *Exec = getToolChain().getDriver().getClangProgramPath();
5468  Flags += Exec;
5469  for (const char *OriginalArg : OriginalArgs) {
5470  SmallString<128> EscapedArg;
5471  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5472  Flags += " ";
5473  Flags += EscapedArg;
5474  }
5475  CmdArgs.push_back("-dwarf-debug-flags");
5476  CmdArgs.push_back(Args.MakeArgString(Flags));
5477  }
5478 
5479  // FIXME: Add -static support, once we have it.
5480 
5481  // Add target specific flags.
5482  switch (getToolChain().getArch()) {
5483  default:
5484  break;
5485 
5486  case llvm::Triple::mips:
5487  case llvm::Triple::mipsel:
5488  case llvm::Triple::mips64:
5489  case llvm::Triple::mips64el:
5490  AddMIPSTargetArgs(Args, CmdArgs);
5491  break;
5492 
5493  case llvm::Triple::x86:
5494  case llvm::Triple::x86_64:
5495  AddX86TargetArgs(Args, CmdArgs);
5496  break;
5497 
5498  case llvm::Triple::arm:
5499  case llvm::Triple::armeb:
5500  case llvm::Triple::thumb:
5501  case llvm::Triple::thumbeb:
5502  // This isn't in AddARMTargetArgs because we want to do this for assembly
5503  // only, not C/C++.
5504  if (Args.hasFlag(options::OPT_mdefault_build_attributes,
5505  options::OPT_mno_default_build_attributes, true)) {
5506  CmdArgs.push_back("-mllvm");
5507  CmdArgs.push_back("-arm-add-build-attributes");
5508  }
5509  break;
5510  }
5511 
5512  // Consume all the warning flags. Usually this would be handled more
5513  // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
5514  // doesn't handle that so rather than warning about unused flags that are
5515  // actually used, we'll lie by omission instead.
5516  // FIXME: Stop lying and consume only the appropriate driver flags
5517  Args.ClaimAllArgs(options::OPT_W_Group);
5518 
5519  CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
5520  getToolChain().getDriver());
5521 
5522  Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
5523 
5524  assert(Output.isFilename() && "Unexpected lipo output.");
5525  CmdArgs.push_back("-o");
5526  CmdArgs.push_back(Output.getFilename());
5527 
5528  if (Args.hasArg(options::OPT_gsplit_dwarf) &&
5529  getToolChain().getTriple().isOSLinux()) {
5530  CmdArgs.push_back("-split-dwarf-file");
5531  CmdArgs.push_back(SplitDebugName(Args, Input));
5532  }
5533 
5534  assert(Input.isFilename() && "Invalid input.");
5535  CmdArgs.push_back(Input.getFilename());
5536 
5537  const char *Exec = getToolChain().getDriver().getClangProgramPath();
5538  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5539 }
5540 
5541 // Begin OffloadBundler
5542 
5544  const InputInfo &Output,
5545  const InputInfoList &Inputs,
5546  const llvm::opt::ArgList &TCArgs,
5547  const char *LinkingOutput) const {
5548  // The version with only one output is expected to refer to a bundling job.
5549  assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
5550 
5551  // The bundling command looks like this:
5552  // clang-offload-bundler -type=bc
5553  // -targets=host-triple,openmp-triple1,openmp-triple2
5554  // -outputs=input_file
5555  // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5556 
5557  ArgStringList CmdArgs;
5558 
5559  // Get the type.
5560  CmdArgs.push_back(TCArgs.MakeArgString(
5561  Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
5562 
5563  assert(JA.getInputs().size() == Inputs.size() &&
5564  "Not have inputs for all dependence actions??");
5565 
5566  // Get the targets.
5567  SmallString<128> Triples;
5568  Triples += "-targets=";
5569  for (unsigned I = 0; I < Inputs.size(); ++I) {
5570  if (I)
5571  Triples += ',';
5572 
5573  // Find ToolChain for this input.
5575  const ToolChain *CurTC = &getToolChain();
5576  const Action *CurDep = JA.getInputs()[I];
5577 
5578  if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
5579  CurTC = nullptr;
5580  OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
5581  assert(CurTC == nullptr && "Expected one dependence!");
5582  CurKind = A->getOffloadingDeviceKind();
5583  CurTC = TC;
5584  });
5585  }
5586  Triples += Action::GetOffloadKindName(CurKind);
5587  Triples += '-';
5588  Triples += CurTC->getTriple().normalize();
5589  if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
5590  Triples += '-';
5591  Triples += CurDep->getOffloadingArch();
5592  }
5593  }
5594  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5595 
5596  // Get bundled file command.
5597  CmdArgs.push_back(
5598  TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
5599 
5600  // Get unbundled files command.
5601  SmallString<128> UB;
5602  UB += "-inputs=";
5603  for (unsigned I = 0; I < Inputs.size(); ++I) {
5604  if (I)
5605  UB += ',';
5606 
5607  // Find ToolChain for this input.
5608  const ToolChain *CurTC = &getToolChain();
5609  if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
5610  CurTC = nullptr;
5611  OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
5612  assert(CurTC == nullptr && "Expected one dependence!");
5613  CurTC = TC;
5614  });
5615  }
5616  UB += CurTC->getInputFilename(Inputs[I]);
5617  }
5618  CmdArgs.push_back(TCArgs.MakeArgString(UB));
5619 
5620  // All the inputs are encoded as commands.
5621  C.addCommand(llvm::make_unique<Command>(
5622  JA, *this,
5623  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5624  CmdArgs, None));
5625 }
5626 
5628  Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
5629  const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
5630  const char *LinkingOutput) const {
5631  // The version with multiple outputs is expected to refer to a unbundling job.
5632  auto &UA = cast<OffloadUnbundlingJobAction>(JA);
5633 
5634  // The unbundling command looks like this:
5635  // clang-offload-bundler -type=bc
5636  // -targets=host-triple,openmp-triple1,openmp-triple2
5637  // -inputs=input_file
5638  // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
5639  // -unbundle
5640 
5641  ArgStringList CmdArgs;
5642 
5643  assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
5644  InputInfo Input = Inputs.front();
5645 
5646  // Get the type.
5647  CmdArgs.push_back(TCArgs.MakeArgString(
5648  Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
5649 
5650  // Get the targets.
5651  SmallString<128> Triples;
5652  Triples += "-targets=";
5653  auto DepInfo = UA.getDependentActionsInfo();
5654  for (unsigned I = 0; I < DepInfo.size(); ++I) {
5655  if (I)
5656  Triples += ',';
5657 
5658  auto &Dep = DepInfo[I];
5659  Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
5660  Triples += '-';
5661  Triples += Dep.DependentToolChain->getTriple().normalize();
5662  if (Dep.DependentOffloadKind == Action::OFK_HIP &&
5663  !Dep.DependentBoundArch.empty()) {
5664  Triples += '-';
5665  Triples += Dep.DependentBoundArch;
5666  }
5667  }
5668 
5669  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
5670 
5671  // Get bundled file command.
5672  CmdArgs.push_back(
5673  TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
5674 
5675  // Get unbundled files command.
5676  SmallString<128> UB;
5677  UB += "-outputs=";
5678  for (unsigned I = 0; I < Outputs.size(); ++I) {
5679  if (I)
5680  UB += ',';
5681  UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
5682  }
5683  CmdArgs.push_back(TCArgs.MakeArgString(UB));
5684  CmdArgs.push_back("-unbundle");
5685 
5686  // All the inputs are encoded as commands.
5687  C.addCommand(llvm::make_unique<Command>(
5688  JA, *this,
5689  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
5690  CmdArgs, None));
5691 }
StringRef getSysRoot() const
Returns the sysroot path.
static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T, ArgStringList &CmdArgs)
Definition: Clang.cpp:2646
static const char * getBaseInputName(const llvm::opt::ArgList &Args, const InputInfo &Input)
Definition: Clang.cpp:5285
void handleTargetFeaturesGroup(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier Group)
void getRISCVTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple, const ArgList &Args, ArgStringList &CmdArgs, bool ForAS)
Definition: Clang.cpp:308
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:5627
static bool useFramePointerForTargetByDefault(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:511
OpenMPRuntimeKind getOpenMPRuntime(const llvm::opt::ArgList &Args) const
Compute the desired OpenMP runtime from the flags provided.
Definition: Driver.cpp:514
static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC)
Definition: Clang.cpp:466
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:480
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:411
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:371
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:519
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:726
input_range inputs()
Definition: Action.h:149
static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs)
Add a CC1 and CC1AS option to specify the debug file path prefix map.
Definition: Clang.cpp:608
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:122
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:201
static void CollectArgsForIntegratedAssembler(Compilation &C, const ArgList &Args, ArgStringList &CmdArgs, const Driver &D)
Definition: Clang.cpp:1858
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:522
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:110
static void QuoteTarget(StringRef Target, SmallVectorImpl< char > &Res)
Definition: Clang.cpp:93
static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args)
Definition: Clang.cpp:52
&#39;gcc&#39; is the Objective-C runtime shipped with GCC, implementing a fragile Objective-C ABI ...
Definition: ObjCRuntime.h:53
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:855
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
static StringRef bytes(const std::vector< T, Allocator > &v)
Definition: ASTWriter.cpp:120
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:40
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:631
bool embedBitcodeMarkerOnly() const
Definition: Driver.h:334
ActionList & getInputs()
Definition: Action.h:142
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:339
static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D, bool OFastEnabled, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2050
bool isOffloading(OffloadKind OKind) const
Definition: Action.h:207
std::string GetClPchPath(Compilation &C, StringRef BaseName) const
Return the pathname of the pch file in clang-cl mode.
Definition: Driver.cpp:4258
Action - Represent an abstract compilation step to perform.
Definition: Action.h:48
static const char * RelocationModelName(llvm::Reloc::Model Model)
Definition: Clang.cpp:965
bool isNonFragile() const
Does this runtime follow the set of implied behaviors for a "non-fragile" ABI?
Definition: ObjCRuntime.h:82
bool isNeXTFamily() const
Is this runtime basically of the NeXT family of runtimes?
Definition: ObjCRuntime.h:135
std::string getTripleString() const
Definition: ToolChain.h:206
static void addPGOAndCoverageFlags(Compilation &C, const Driver &D, const InputInfo &Output, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:714
uint32_t Offset
Definition: CacheTokens.cpp:43
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:652
types::ID getType() const
Definition: Action.h:140
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:204
bool isOptimizationLevelFast(const llvm::opt::ArgList &Args)
The LLVM OpenMP runtime.
Definition: Driver.h:96
OffloadKind getOffloadingDeviceKind() const
Definition: Action.h:196
static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, bool KernelOrKext)
Definition: Clang.cpp:2294
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
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:172
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:5543
void getAMDGPUTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
Definition: AMDGPU.cpp:39
DebugInfoKind
Debug info kind.
Definition: Cuda.cpp:280
static void RenderDebugInfoCompressionArgs(const ArgList &Args, ArgStringList &CmdArgs, const Driver &D, const ToolChain &TC)
Definition: Clang.cpp:932
void AddX86TargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:5327
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:2875
static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2368
StringRef Filename
Definition: Format.cpp:1605
const ToolChain & getDefaultToolChain() const
Definition: Compilation.h:136
virtual bool useRelaxRelocations() const
Check whether to enable x86 relax relocations by default.
Definition: ToolChain.cpp:103
static void getDefaultModuleCachePath(SmallVectorImpl< char > &Result)
Compute the default -fmodule-cache-path.
Definition: Clang.cpp:2477
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:97
static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2440
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:296
static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs, codegenoptions::DebugInfoKind DebugInfoKind, unsigned DwarfVersion, llvm::DebuggerKind DebuggerTuning)
Definition: Clang.cpp:887
Defines the clang::LangOptions interface.
ActionClass getKind() const
Definition: Action.h:139
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:303
&#39;macosx&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the non-fragile AB...
Definition: ObjCRuntime.h:35
std::string getAsString() const
Definition: ObjCRuntime.cpp:24
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:284
const llvm::Triple & getEffectiveTriple() const
Get the toolchain&#39;s effective clang triple.
Definition: ToolChain.h:211
static unsigned DwarfVersionNum(StringRef ArgValue)
Definition: Clang.cpp:878
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:49
virtual bool IsObjCNonFragileABIDefault() const
IsObjCNonFragileABIDefault - Does this tool chain set -fobjc-nonfragile-abi by default.
Definition: ToolChain.h:328
SmallString< 128 > getStatsFileName(const llvm::opt::ArgList &Args, const InputInfo &Output, const InputInfo &Input, const Driver &D)
Handles the -save-stats option and returns the filename to save statistics to.
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:206
static const char * getDependencyFileName(const llvm::opt::ArgList &Args, const InputInfoList &Inputs)
Definition: Clang.cpp:5300
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:56
virtual bool supportsDebugInfoOption(const llvm::opt::Arg *) const
Does this toolchain supports given debug info option or not.
Definition: ToolChain.h:417
do v
Definition: arm_acle.h:78
static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args)
Definition: Clang.cpp:64
const_offload_toolchains_range getOffloadToolChains() const
Definition: Compilation.h:151
static bool isSignedCharDefault(const llvm::Triple &Triple)
Definition: Clang.cpp:1241
virtual bool IsMathErrnoDefault() const
IsMathErrnoDefault - Does this tool chain use -fmath-errno by default.
Definition: ToolChain.h:320
unsigned ParseFunctionAlignment(const ToolChain &TC, const llvm::opt::ArgList &Args)
void addSanitizerArgs(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:197
virtual bool UseObjCMixedDispatch() const
UseObjCMixedDispatchDefault - When using non-legacy dispatch, should the mixed dispatch method be use...
Definition: ToolChain.h:332
static void RenderModulesOptions(Compilation &C, const Driver &D, const ArgList &Args, const InputInfo &Input, const InputInfo &Output, ArgStringList &CmdArgs, bool &HaveModules)
Definition: Clang.cpp:2484
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:234
void getAArch64TargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
bool embedBitcodeInObject() const
Definition: Driver.h:333
static bool isNoCommonDefault(const llvm::Triple &Triple)
Definition: Clang.cpp:1272
static void EscapeSpacesAndBackslashes(const char *Arg, SmallVectorImpl< char > &Res)
Definition: Clang.cpp:76
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:187
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:155
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:181
Kind getKind() const
Definition: ObjCRuntime.h:77
static bool checkDebugInfoOption(const Arg *A, const ArgList &Args, const Driver &D, const ToolChain &TC)
Definition: Clang.cpp:922
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:329
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:100
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
const VersionTuple & getVersion() const
Definition: ObjCRuntime.h:78
static void appendUserToPath(SmallVectorImpl< char > &Result)
Definition: Clang.cpp:682
&#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:3103
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:2681
void AddMIPSTargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:5316
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:395
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:28
virtual llvm::DebuggerKind getDefaultDebuggerTuning() const
Definition: ToolChain.h:412
Emit location information but do not generate debug info in the output.
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:499
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:191
static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2760
virtual unsigned GetDefaultDwarfVersion() const
Definition: ToolChain.h:403
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:5044
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:136
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:46
const Driver & getDriver() const
Definition: Compilation.h:134
const llvm::Triple & getTriple() const
Definition: ToolChain.h:183
static Optional< unsigned > getSmallDataThreshold(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:397
static bool shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime, const llvm::Triple &Triple)
Definition: Clang.cpp:391
static StringRef GetOffloadKindName(OffloadKind Kind)
Return a string containing a offload kind name.
Definition: Action.cpp:143
bool hasCompactBranches(StringRef &CPU)
Definition: Mips.cpp:407
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:247
virtual bool GetDefaultStandaloneDebug() const
Definition: ToolChain.h:409
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:499
static std::string GetOffloadingFileNamePrefix(OffloadKind Kind, 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:127
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:183
bool isFilename() const
Definition: InputInfo.h:76
Clang(const ToolChain &TC)
Definition: Clang.cpp:4884
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:668
static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec)
Vectorize at all optimization levels greater than 1 except for -Oz.
Definition: Clang.cpp:621
static bool maybeConsumeDash(const std::string &EH, size_t &I)
Definition: Clang.cpp:5023
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:233
const char * getClangProgramPath() const
Get the path to the main clang executable.
Definition: Driver.h:315
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:164
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:5341
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:5290
static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs, const llvm::Triple &Triple, const InputInfo &Input)
Definition: Clang.cpp:2222
static bool ContainsCompileAction(const Action *A)
Check whether the given input tree contains any compilation actions.
Definition: Clang.cpp:842
static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A)
Definition: Clang.cpp:487
static bool ShouldDisableDwarfDirectory(const ArgList &Args, const ToolChain &TC)
Definition: Clang.cpp:477
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:154
const char * getOffloadingArch() const
Definition: Action.h:197
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:2342
bool isObjC(ID Id)
isObjC - Is this an "ObjC" input (Obj-C and Obj-C++ sources and headers).
Definition: Types.cpp:123
bool allowsWeak() const
Does this runtime allow the use of __weak?
Definition: ObjCRuntime.h:193
LangStandard::Kind Std
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:133