clang  9.0.0
Clang.cpp
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1 //===-- Clang.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "Clang.h"
10 #include "Arch/AArch64.h"
11 #include "Arch/ARM.h"
12 #include "Arch/Mips.h"
13 #include "Arch/PPC.h"
14 #include "Arch/RISCV.h"
15 #include "Arch/Sparc.h"
16 #include "Arch/SystemZ.h"
17 #include "Arch/X86.h"
18 #include "AMDGPU.h"
19 #include "CommonArgs.h"
20 #include "Hexagon.h"
21 #include "MSP430.h"
22 #include "InputInfo.h"
23 #include "PS4CPU.h"
24 #include "clang/Basic/CharInfo.h"
27 #include "clang/Basic/Version.h"
28 #include "clang/Driver/Distro.h"
30 #include "clang/Driver/Options.h"
32 #include "clang/Driver/XRayArgs.h"
33 #include "llvm/ADT/StringExtras.h"
34 #include "llvm/Config/llvm-config.h"
35 #include "llvm/Option/ArgList.h"
36 #include "llvm/Support/CodeGen.h"
37 #include "llvm/Support/Compression.h"
38 #include "llvm/Support/FileSystem.h"
39 #include "llvm/Support/Path.h"
40 #include "llvm/Support/Process.h"
41 #include "llvm/Support/TargetParser.h"
42 #include "llvm/Support/YAMLParser.h"
43 
44 #ifdef LLVM_ON_UNIX
45 #include <unistd.h> // For getuid().
46 #endif
47 
48 using namespace clang::driver;
49 using namespace clang::driver::tools;
50 using namespace clang;
51 using namespace llvm::opt;
52 
53 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
54  if (Arg *A =
55  Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
56  if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
57  !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
58  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
59  << A->getBaseArg().getAsString(Args)
60  << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
61  }
62  }
63 }
64 
65 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
66  // In gcc, only ARM checks this, but it seems reasonable to check universally.
67  if (Args.hasArg(options::OPT_static))
68  if (const Arg *A =
69  Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
70  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
71  << "-static";
72 }
73 
74 // Add backslashes to escape spaces and other backslashes.
75 // This is used for the space-separated argument list specified with
76 // the -dwarf-debug-flags option.
77 static void EscapeSpacesAndBackslashes(const char *Arg,
78  SmallVectorImpl<char> &Res) {
79  for (; *Arg; ++Arg) {
80  switch (*Arg) {
81  default:
82  break;
83  case ' ':
84  case '\\':
85  Res.push_back('\\');
86  break;
87  }
88  Res.push_back(*Arg);
89  }
90 }
91 
92 // Quote target names for inclusion in GNU Make dependency files.
93 // Only the characters '$', '#', ' ', '\t' are quoted.
94 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
95  for (unsigned i = 0, e = Target.size(); i != e; ++i) {
96  switch (Target[i]) {
97  case ' ':
98  case '\t':
99  // Escape the preceding backslashes
100  for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
101  Res.push_back('\\');
102 
103  // Escape the space/tab
104  Res.push_back('\\');
105  break;
106  case '$':
107  Res.push_back('$');
108  break;
109  case '#':
110  Res.push_back('\\');
111  break;
112  default:
113  break;
114  }
115 
116  Res.push_back(Target[i]);
117  }
118 }
119 
120 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
121 /// offloading tool chain that is associated with the current action \a JA.
122 static void
124  const ToolChain &RegularToolChain,
125  llvm::function_ref<void(const ToolChain &)> Work) {
126  // Apply Work on the current/regular tool chain.
127  Work(RegularToolChain);
128 
129  // Apply Work on all the offloading tool chains associated with the current
130  // action.
135  else if (JA.isHostOffloading(Action::OFK_HIP))
137  else if (JA.isDeviceOffloading(Action::OFK_HIP))
139 
142  for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
143  Work(*II->second);
144  } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
146 
147  //
148  // TODO: Add support for other offloading programming models here.
149  //
150 }
151 
152 /// This is a helper function for validating the optional refinement step
153 /// parameter in reciprocal argument strings. Return false if there is an error
154 /// parsing the refinement step. Otherwise, return true and set the Position
155 /// of the refinement step in the input string.
156 static bool getRefinementStep(StringRef In, const Driver &D,
157  const Arg &A, size_t &Position) {
158  const char RefinementStepToken = ':';
159  Position = In.find(RefinementStepToken);
160  if (Position != StringRef::npos) {
161  StringRef Option = A.getOption().getName();
162  StringRef RefStep = In.substr(Position + 1);
163  // Allow exactly one numeric character for the additional refinement
164  // step parameter. This is reasonable for all currently-supported
165  // operations and architectures because we would expect that a larger value
166  // of refinement steps would cause the estimate "optimization" to
167  // under-perform the native operation. Also, if the estimate does not
168  // converge quickly, it probably will not ever converge, so further
169  // refinement steps will not produce a better answer.
170  if (RefStep.size() != 1) {
171  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
172  return false;
173  }
174  char RefStepChar = RefStep[0];
175  if (RefStepChar < '0' || RefStepChar > '9') {
176  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
177  return false;
178  }
179  }
180  return true;
181 }
182 
183 /// The -mrecip flag requires processing of many optional parameters.
184 static void ParseMRecip(const Driver &D, const ArgList &Args,
185  ArgStringList &OutStrings) {
186  StringRef DisabledPrefixIn = "!";
187  StringRef DisabledPrefixOut = "!";
188  StringRef EnabledPrefixOut = "";
189  StringRef Out = "-mrecip=";
190 
191  Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
192  if (!A)
193  return;
194 
195  unsigned NumOptions = A->getNumValues();
196  if (NumOptions == 0) {
197  // No option is the same as "all".
198  OutStrings.push_back(Args.MakeArgString(Out + "all"));
199  return;
200  }
201 
202  // Pass through "all", "none", or "default" with an optional refinement step.
203  if (NumOptions == 1) {
204  StringRef Val = A->getValue(0);
205  size_t RefStepLoc;
206  if (!getRefinementStep(Val, D, *A, RefStepLoc))
207  return;
208  StringRef ValBase = Val.slice(0, RefStepLoc);
209  if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
210  OutStrings.push_back(Args.MakeArgString(Out + Val));
211  return;
212  }
213  }
214 
215  // Each reciprocal type may be enabled or disabled individually.
216  // Check each input value for validity, concatenate them all back together,
217  // and pass through.
218 
219  llvm::StringMap<bool> OptionStrings;
220  OptionStrings.insert(std::make_pair("divd", false));
221  OptionStrings.insert(std::make_pair("divf", false));
222  OptionStrings.insert(std::make_pair("vec-divd", false));
223  OptionStrings.insert(std::make_pair("vec-divf", false));
224  OptionStrings.insert(std::make_pair("sqrtd", false));
225  OptionStrings.insert(std::make_pair("sqrtf", false));
226  OptionStrings.insert(std::make_pair("vec-sqrtd", false));
227  OptionStrings.insert(std::make_pair("vec-sqrtf", false));
228 
229  for (unsigned i = 0; i != NumOptions; ++i) {
230  StringRef Val = A->getValue(i);
231 
232  bool IsDisabled = Val.startswith(DisabledPrefixIn);
233  // Ignore the disablement token for string matching.
234  if (IsDisabled)
235  Val = Val.substr(1);
236 
237  size_t RefStep;
238  if (!getRefinementStep(Val, D, *A, RefStep))
239  return;
240 
241  StringRef ValBase = Val.slice(0, RefStep);
242  llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
243  if (OptionIter == OptionStrings.end()) {
244  // Try again specifying float suffix.
245  OptionIter = OptionStrings.find(ValBase.str() + 'f');
246  if (OptionIter == OptionStrings.end()) {
247  // The input name did not match any known option string.
248  D.Diag(diag::err_drv_unknown_argument) << Val;
249  return;
250  }
251  // The option was specified without a float or double suffix.
252  // Make sure that the double entry was not already specified.
253  // The float entry will be checked below.
254  if (OptionStrings[ValBase.str() + 'd']) {
255  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
256  return;
257  }
258  }
259 
260  if (OptionIter->second == true) {
261  // Duplicate option specified.
262  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
263  return;
264  }
265 
266  // Mark the matched option as found. Do not allow duplicate specifiers.
267  OptionIter->second = true;
268 
269  // If the precision was not specified, also mark the double entry as found.
270  if (ValBase.back() != 'f' && ValBase.back() != 'd')
271  OptionStrings[ValBase.str() + 'd'] = true;
272 
273  // Build the output string.
274  StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
275  Out = Args.MakeArgString(Out + Prefix + Val);
276  if (i != NumOptions - 1)
277  Out = Args.MakeArgString(Out + ",");
278  }
279 
280  OutStrings.push_back(Args.MakeArgString(Out));
281 }
282 
283 /// The -mprefer-vector-width option accepts either a positive integer
284 /// or the string "none".
285 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
286  ArgStringList &CmdArgs) {
287  Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
288  if (!A)
289  return;
290 
291  StringRef Value = A->getValue();
292  if (Value == "none") {
293  CmdArgs.push_back("-mprefer-vector-width=none");
294  } else {
295  unsigned Width;
296  if (Value.getAsInteger(10, Width)) {
297  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
298  return;
299  }
300  CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
301  }
302 }
303 
304 static void getWebAssemblyTargetFeatures(const ArgList &Args,
305  std::vector<StringRef> &Features) {
306  handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
307 }
308 
309 static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
310  const ArgList &Args, ArgStringList &CmdArgs,
311  bool ForAS) {
312  const Driver &D = TC.getDriver();
313  std::vector<StringRef> Features;
314  switch (Triple.getArch()) {
315  default:
316  break;
317  case llvm::Triple::mips:
318  case llvm::Triple::mipsel:
319  case llvm::Triple::mips64:
320  case llvm::Triple::mips64el:
321  mips::getMIPSTargetFeatures(D, Triple, Args, Features);
322  break;
323 
324  case llvm::Triple::arm:
325  case llvm::Triple::armeb:
326  case llvm::Triple::thumb:
327  case llvm::Triple::thumbeb:
328  arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS);
329  break;
330 
331  case llvm::Triple::ppc:
332  case llvm::Triple::ppc64:
333  case llvm::Triple::ppc64le:
334  ppc::getPPCTargetFeatures(D, Triple, Args, Features);
335  break;
336  case llvm::Triple::riscv32:
337  case llvm::Triple::riscv64:
338  riscv::getRISCVTargetFeatures(D, Args, Features);
339  break;
340  case llvm::Triple::systemz:
341  systemz::getSystemZTargetFeatures(Args, Features);
342  break;
343  case llvm::Triple::aarch64:
344  case llvm::Triple::aarch64_be:
345  aarch64::getAArch64TargetFeatures(D, Triple, Args, Features);
346  break;
347  case llvm::Triple::x86:
348  case llvm::Triple::x86_64:
349  x86::getX86TargetFeatures(D, Triple, Args, Features);
350  break;
351  case llvm::Triple::hexagon:
352  hexagon::getHexagonTargetFeatures(D, Args, Features);
353  break;
354  case llvm::Triple::wasm32:
355  case llvm::Triple::wasm64:
356  getWebAssemblyTargetFeatures(Args, Features);
357  break;
358  case llvm::Triple::sparc:
359  case llvm::Triple::sparcel:
360  case llvm::Triple::sparcv9:
361  sparc::getSparcTargetFeatures(D, Args, Features);
362  break;
363  case llvm::Triple::r600:
364  case llvm::Triple::amdgcn:
365  amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
366  break;
367  case llvm::Triple::msp430:
368  msp430::getMSP430TargetFeatures(D, Args, Features);
369  }
370 
371  // Find the last of each feature.
372  llvm::StringMap<unsigned> LastOpt;
373  for (unsigned I = 0, N = Features.size(); I < N; ++I) {
374  StringRef Name = Features[I];
375  assert(Name[0] == '-' || Name[0] == '+');
376  LastOpt[Name.drop_front(1)] = I;
377  }
378 
379  for (unsigned I = 0, N = Features.size(); I < N; ++I) {
380  // If this feature was overridden, ignore it.
381  StringRef Name = Features[I];
382  llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
383  assert(LastI != LastOpt.end());
384  unsigned Last = LastI->second;
385  if (Last != I)
386  continue;
387 
388  CmdArgs.push_back("-target-feature");
389  CmdArgs.push_back(Name.data());
390  }
391 }
392 
393 static bool
395  const llvm::Triple &Triple) {
396  // We use the zero-cost exception tables for Objective-C if the non-fragile
397  // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
398  // later.
399  if (runtime.isNonFragile())
400  return true;
401 
402  if (!Triple.isMacOSX())
403  return false;
404 
405  return (!Triple.isMacOSXVersionLT(10, 5) &&
406  (Triple.getArch() == llvm::Triple::x86_64 ||
407  Triple.getArch() == llvm::Triple::arm));
408 }
409 
410 /// Adds exception related arguments to the driver command arguments. There's a
411 /// master flag, -fexceptions and also language specific flags to enable/disable
412 /// C++ and Objective-C exceptions. This makes it possible to for example
413 /// disable C++ exceptions but enable Objective-C exceptions.
414 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
415  const ToolChain &TC, bool KernelOrKext,
416  const ObjCRuntime &objcRuntime,
417  ArgStringList &CmdArgs) {
418  const llvm::Triple &Triple = TC.getTriple();
419 
420  if (KernelOrKext) {
421  // -mkernel and -fapple-kext imply no exceptions, so claim exception related
422  // arguments now to avoid warnings about unused arguments.
423  Args.ClaimAllArgs(options::OPT_fexceptions);
424  Args.ClaimAllArgs(options::OPT_fno_exceptions);
425  Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
426  Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
427  Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
428  Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
429  return;
430  }
431 
432  // See if the user explicitly enabled exceptions.
433  bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
434  false);
435 
436  // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
437  // is not necessarily sensible, but follows GCC.
438  if (types::isObjC(InputType) &&
439  Args.hasFlag(options::OPT_fobjc_exceptions,
440  options::OPT_fno_objc_exceptions, true)) {
441  CmdArgs.push_back("-fobjc-exceptions");
442 
443  EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
444  }
445 
446  if (types::isCXX(InputType)) {
447  // Disable C++ EH by default on XCore and PS4.
448  bool CXXExceptionsEnabled =
449  Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
450  Arg *ExceptionArg = Args.getLastArg(
451  options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
452  options::OPT_fexceptions, options::OPT_fno_exceptions);
453  if (ExceptionArg)
454  CXXExceptionsEnabled =
455  ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
456  ExceptionArg->getOption().matches(options::OPT_fexceptions);
457 
458  if (CXXExceptionsEnabled) {
459  CmdArgs.push_back("-fcxx-exceptions");
460 
461  EH = true;
462  }
463  }
464 
465  if (EH)
466  CmdArgs.push_back("-fexceptions");
467 }
468 
469 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
470  bool Default = true;
471  if (TC.getTriple().isOSDarwin()) {
472  // The native darwin assembler doesn't support the linker_option directives,
473  // so we disable them if we think the .s file will be passed to it.
474  Default = TC.useIntegratedAs();
475  }
476  return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
477  Default);
478 }
479 
480 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
481  const ToolChain &TC) {
482  bool UseDwarfDirectory =
483  Args.hasFlag(options::OPT_fdwarf_directory_asm,
484  options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
485  return !UseDwarfDirectory;
486 }
487 
488 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
489 // to the corresponding DebugInfoKind.
491  assert(A.getOption().matches(options::OPT_gN_Group) &&
492  "Not a -g option that specifies a debug-info level");
493  if (A.getOption().matches(options::OPT_g0) ||
494  A.getOption().matches(options::OPT_ggdb0))
496  if (A.getOption().matches(options::OPT_gline_tables_only) ||
497  A.getOption().matches(options::OPT_ggdb1))
499  if (A.getOption().matches(options::OPT_gline_directives_only))
502 }
503 
504 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
505  switch (Triple.getArch()){
506  default:
507  return false;
508  case llvm::Triple::arm:
509  case llvm::Triple::thumb:
510  // ARM Darwin targets require a frame pointer to be always present to aid
511  // offline debugging via backtraces.
512  return Triple.isOSDarwin();
513  }
514 }
515 
516 static bool useFramePointerForTargetByDefault(const ArgList &Args,
517  const llvm::Triple &Triple) {
518  switch (Triple.getArch()) {
519  case llvm::Triple::xcore:
520  case llvm::Triple::wasm32:
521  case llvm::Triple::wasm64:
522  case llvm::Triple::msp430:
523  // XCore never wants frame pointers, regardless of OS.
524  // WebAssembly never wants frame pointers.
525  return false;
526  case llvm::Triple::ppc:
527  case llvm::Triple::ppc64:
528  case llvm::Triple::ppc64le:
529  case llvm::Triple::riscv32:
530  case llvm::Triple::riscv64:
531  return !areOptimizationsEnabled(Args);
532  default:
533  break;
534  }
535 
536  if (Triple.isOSNetBSD()) {
537  return !areOptimizationsEnabled(Args);
538  }
539 
540  if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
541  Triple.isOSHurd()) {
542  switch (Triple.getArch()) {
543  // Don't use a frame pointer on linux if optimizing for certain targets.
544  case llvm::Triple::mips64:
545  case llvm::Triple::mips64el:
546  case llvm::Triple::mips:
547  case llvm::Triple::mipsel:
548  case llvm::Triple::systemz:
549  case llvm::Triple::x86:
550  case llvm::Triple::x86_64:
551  return !areOptimizationsEnabled(Args);
552  default:
553  return true;
554  }
555  }
556 
557  if (Triple.isOSWindows()) {
558  switch (Triple.getArch()) {
559  case llvm::Triple::x86:
560  return !areOptimizationsEnabled(Args);
561  case llvm::Triple::x86_64:
562  return Triple.isOSBinFormatMachO();
563  case llvm::Triple::arm:
564  case llvm::Triple::thumb:
565  // Windows on ARM builds with FPO disabled to aid fast stack walking
566  return true;
567  default:
568  // All other supported Windows ISAs use xdata unwind information, so frame
569  // pointers are not generally useful.
570  return false;
571  }
572  }
573 
574  return true;
575 }
576 
577 static bool shouldUseFramePointer(const ArgList &Args,
578  const llvm::Triple &Triple) {
579  if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
580  options::OPT_fomit_frame_pointer))
581  return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
583 
584  if (Args.hasArg(options::OPT_pg))
585  return true;
586 
587  return useFramePointerForTargetByDefault(Args, Triple);
588 }
589 
590 static bool shouldUseLeafFramePointer(const ArgList &Args,
591  const llvm::Triple &Triple) {
592  if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
593  options::OPT_momit_leaf_frame_pointer))
594  return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer);
595 
596  if (Args.hasArg(options::OPT_pg))
597  return true;
598 
599  if (Triple.isPS4CPU())
600  return false;
601 
602  return useFramePointerForTargetByDefault(Args, Triple);
603 }
604 
605 /// Add a CC1 option to specify the debug compilation directory.
606 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
607  if (Arg *A = Args.getLastArg(options::OPT_fdebug_compilation_dir)) {
608  CmdArgs.push_back("-fdebug-compilation-dir");
609  CmdArgs.push_back(A->getValue());
610  } else {
611  SmallString<128> cwd;
612  if (!llvm::sys::fs::current_path(cwd)) {
613  CmdArgs.push_back("-fdebug-compilation-dir");
614  CmdArgs.push_back(Args.MakeArgString(cwd));
615  }
616  }
617 }
618 
619 /// Add a CC1 and CC1AS option to specify the debug file path prefix map.
620 static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
621  for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
622  StringRef Map = A->getValue();
623  if (Map.find('=') == StringRef::npos)
624  D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
625  else
626  CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
627  A->claim();
628  }
629 }
630 
631 /// Vectorize at all optimization levels greater than 1 except for -Oz.
632 /// For -Oz the loop vectorizer is disabled, while the slp vectorizer is
633 /// enabled.
634 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
635  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
636  if (A->getOption().matches(options::OPT_O4) ||
637  A->getOption().matches(options::OPT_Ofast))
638  return true;
639 
640  if (A->getOption().matches(options::OPT_O0))
641  return false;
642 
643  assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
644 
645  // Vectorize -Os.
646  StringRef S(A->getValue());
647  if (S == "s")
648  return true;
649 
650  // Don't vectorize -Oz, unless it's the slp vectorizer.
651  if (S == "z")
652  return isSlpVec;
653 
654  unsigned OptLevel = 0;
655  if (S.getAsInteger(10, OptLevel))
656  return false;
657 
658  return OptLevel > 1;
659  }
660 
661  return false;
662 }
663 
664 /// Add -x lang to \p CmdArgs for \p Input.
665 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
666  ArgStringList &CmdArgs) {
667  // When using -verify-pch, we don't want to provide the type
668  // 'precompiled-header' if it was inferred from the file extension
669  if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
670  return;
671 
672  CmdArgs.push_back("-x");
673  if (Args.hasArg(options::OPT_rewrite_objc))
674  CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
675  else {
676  // Map the driver type to the frontend type. This is mostly an identity
677  // mapping, except that the distinction between module interface units
678  // and other source files does not exist at the frontend layer.
679  const char *ClangType;
680  switch (Input.getType()) {
681  case types::TY_CXXModule:
682  ClangType = "c++";
683  break;
684  case types::TY_PP_CXXModule:
685  ClangType = "c++-cpp-output";
686  break;
687  default:
688  ClangType = types::getTypeName(Input.getType());
689  break;
690  }
691  CmdArgs.push_back(ClangType);
692  }
693 }
694 
696 #ifdef LLVM_ON_UNIX
697  const char *Username = getenv("LOGNAME");
698 #else
699  const char *Username = getenv("USERNAME");
700 #endif
701  if (Username) {
702  // Validate that LoginName can be used in a path, and get its length.
703  size_t Len = 0;
704  for (const char *P = Username; *P; ++P, ++Len) {
705  if (!clang::isAlphanumeric(*P) && *P != '_') {
706  Username = nullptr;
707  break;
708  }
709  }
710 
711  if (Username && Len > 0) {
712  Result.append(Username, Username + Len);
713  return;
714  }
715  }
716 
717 // Fallback to user id.
718 #ifdef LLVM_ON_UNIX
719  std::string UID = llvm::utostr(getuid());
720 #else
721  // FIXME: Windows seems to have an 'SID' that might work.
722  std::string UID = "9999";
723 #endif
724  Result.append(UID.begin(), UID.end());
725 }
726 
727 static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C,
728  const Driver &D, const InputInfo &Output,
729  const ArgList &Args,
730  ArgStringList &CmdArgs) {
731 
732  auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
733  options::OPT_fprofile_generate_EQ,
734  options::OPT_fno_profile_generate);
735  if (PGOGenerateArg &&
736  PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
737  PGOGenerateArg = nullptr;
738 
739  auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
740  options::OPT_fcs_profile_generate_EQ,
741  options::OPT_fno_profile_generate);
742  if (CSPGOGenerateArg &&
743  CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
744  CSPGOGenerateArg = nullptr;
745 
746  auto *ProfileGenerateArg = Args.getLastArg(
747  options::OPT_fprofile_instr_generate,
748  options::OPT_fprofile_instr_generate_EQ,
749  options::OPT_fno_profile_instr_generate);
750  if (ProfileGenerateArg &&
751  ProfileGenerateArg->getOption().matches(
752  options::OPT_fno_profile_instr_generate))
753  ProfileGenerateArg = nullptr;
754 
755  if (PGOGenerateArg && ProfileGenerateArg)
756  D.Diag(diag::err_drv_argument_not_allowed_with)
757  << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
758 
759  auto *ProfileUseArg = getLastProfileUseArg(Args);
760 
761  if (PGOGenerateArg && ProfileUseArg)
762  D.Diag(diag::err_drv_argument_not_allowed_with)
763  << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
764 
765  if (ProfileGenerateArg && ProfileUseArg)
766  D.Diag(diag::err_drv_argument_not_allowed_with)
767  << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
768 
769  if (CSPGOGenerateArg && PGOGenerateArg)
770  D.Diag(diag::err_drv_argument_not_allowed_with)
771  << CSPGOGenerateArg->getSpelling() << PGOGenerateArg->getSpelling();
772 
773  if (ProfileGenerateArg) {
774  if (ProfileGenerateArg->getOption().matches(
775  options::OPT_fprofile_instr_generate_EQ))
776  CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
777  ProfileGenerateArg->getValue()));
778  // The default is to use Clang Instrumentation.
779  CmdArgs.push_back("-fprofile-instrument=clang");
780  if (TC.getTriple().isWindowsMSVCEnvironment()) {
781  // Add dependent lib for clang_rt.profile
782  CmdArgs.push_back(Args.MakeArgString("--dependent-lib=" +
783  TC.getCompilerRT(Args, "profile")));
784  }
785  }
786 
787  Arg *PGOGenArg = nullptr;
788  if (PGOGenerateArg) {
789  assert(!CSPGOGenerateArg);
790  PGOGenArg = PGOGenerateArg;
791  CmdArgs.push_back("-fprofile-instrument=llvm");
792  }
793  if (CSPGOGenerateArg) {
794  assert(!PGOGenerateArg);
795  PGOGenArg = CSPGOGenerateArg;
796  CmdArgs.push_back("-fprofile-instrument=csllvm");
797  }
798  if (PGOGenArg) {
799  if (TC.getTriple().isWindowsMSVCEnvironment()) {
800  CmdArgs.push_back(Args.MakeArgString("--dependent-lib=" +
801  TC.getCompilerRT(Args, "profile")));
802  }
803  if (PGOGenArg->getOption().matches(
804  PGOGenerateArg ? options::OPT_fprofile_generate_EQ
805  : options::OPT_fcs_profile_generate_EQ)) {
806  SmallString<128> Path(PGOGenArg->getValue());
807  llvm::sys::path::append(Path, "default_%m.profraw");
808  CmdArgs.push_back(
809  Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
810  }
811  }
812 
813  if (ProfileUseArg) {
814  if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
815  CmdArgs.push_back(Args.MakeArgString(
816  Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
817  else if ((ProfileUseArg->getOption().matches(
818  options::OPT_fprofile_use_EQ) ||
819  ProfileUseArg->getOption().matches(
820  options::OPT_fprofile_instr_use))) {
821  SmallString<128> Path(
822  ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
823  if (Path.empty() || llvm::sys::fs::is_directory(Path))
824  llvm::sys::path::append(Path, "default.profdata");
825  CmdArgs.push_back(
826  Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
827  }
828  }
829 
830  if (Args.hasArg(options::OPT_ftest_coverage) ||
831  Args.hasArg(options::OPT_coverage))
832  CmdArgs.push_back("-femit-coverage-notes");
833  if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
834  false) ||
835  Args.hasArg(options::OPT_coverage))
836  CmdArgs.push_back("-femit-coverage-data");
837 
838  if (Args.hasFlag(options::OPT_fcoverage_mapping,
839  options::OPT_fno_coverage_mapping, false)) {
840  if (!ProfileGenerateArg)
841  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
842  << "-fcoverage-mapping"
843  << "-fprofile-instr-generate";
844 
845  CmdArgs.push_back("-fcoverage-mapping");
846  }
847 
848  if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {
849  auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
850  if (!Args.hasArg(options::OPT_coverage))
851  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
852  << "-fprofile-exclude-files="
853  << "--coverage";
854 
855  StringRef v = Arg->getValue();
856  CmdArgs.push_back(
857  Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));
858  }
859 
860  if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {
861  auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
862  if (!Args.hasArg(options::OPT_coverage))
863  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
864  << "-fprofile-filter-files="
865  << "--coverage";
866 
867  StringRef v = Arg->getValue();
868  CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));
869  }
870 
871  if (C.getArgs().hasArg(options::OPT_c) ||
872  C.getArgs().hasArg(options::OPT_S)) {
873  if (Output.isFilename()) {
874  CmdArgs.push_back("-coverage-notes-file");
875  SmallString<128> OutputFilename;
876  if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
877  OutputFilename = FinalOutput->getValue();
878  else
879  OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
880  SmallString<128> CoverageFilename = OutputFilename;
881  if (llvm::sys::path::is_relative(CoverageFilename)) {
882  SmallString<128> Pwd;
883  if (!llvm::sys::fs::current_path(Pwd)) {
884  llvm::sys::path::append(Pwd, CoverageFilename);
885  CoverageFilename.swap(Pwd);
886  }
887  }
888  llvm::sys::path::replace_extension(CoverageFilename, "gcno");
889  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
890 
891  // Leave -fprofile-dir= an unused argument unless .gcda emission is
892  // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
893  // the flag used. There is no -fno-profile-dir, so the user has no
894  // targeted way to suppress the warning.
895  if (Args.hasArg(options::OPT_fprofile_arcs) ||
896  Args.hasArg(options::OPT_coverage)) {
897  CmdArgs.push_back("-coverage-data-file");
898  if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
899  CoverageFilename = FProfileDir->getValue();
900  llvm::sys::path::append(CoverageFilename, OutputFilename);
901  }
902  llvm::sys::path::replace_extension(CoverageFilename, "gcda");
903  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
904  }
905  }
906  }
907 }
908 
909 /// Check whether the given input tree contains any compilation actions.
910 static bool ContainsCompileAction(const Action *A) {
911  if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
912  return true;
913 
914  for (const auto &AI : A->inputs())
915  if (ContainsCompileAction(AI))
916  return true;
917 
918  return false;
919 }
920 
921 /// Check if -relax-all should be passed to the internal assembler.
922 /// This is done by default when compiling non-assembler source with -O0.
923 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
924  bool RelaxDefault = true;
925 
926  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
927  RelaxDefault = A->getOption().matches(options::OPT_O0);
928 
929  if (RelaxDefault) {
930  RelaxDefault = false;
931  for (const auto &Act : C.getActions()) {
932  if (ContainsCompileAction(Act)) {
933  RelaxDefault = true;
934  break;
935  }
936  }
937  }
938 
939  return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
940  RelaxDefault);
941 }
942 
943 // Extract the integer N from a string spelled "-dwarf-N", returning 0
944 // on mismatch. The StringRef input (rather than an Arg) allows
945 // for use by the "-Xassembler" option parser.
946 static unsigned DwarfVersionNum(StringRef ArgValue) {
947  return llvm::StringSwitch<unsigned>(ArgValue)
948  .Case("-gdwarf-2", 2)
949  .Case("-gdwarf-3", 3)
950  .Case("-gdwarf-4", 4)
951  .Case("-gdwarf-5", 5)
952  .Default(0);
953 }
954 
955 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
957  unsigned DwarfVersion,
958  llvm::DebuggerKind DebuggerTuning) {
959  switch (DebugInfoKind) {
961  CmdArgs.push_back("-debug-info-kind=line-directives-only");
962  break;
964  CmdArgs.push_back("-debug-info-kind=line-tables-only");
965  break;
967  CmdArgs.push_back("-debug-info-kind=limited");
968  break;
970  CmdArgs.push_back("-debug-info-kind=standalone");
971  break;
972  default:
973  break;
974  }
975  if (DwarfVersion > 0)
976  CmdArgs.push_back(
977  Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
978  switch (DebuggerTuning) {
979  case llvm::DebuggerKind::GDB:
980  CmdArgs.push_back("-debugger-tuning=gdb");
981  break;
982  case llvm::DebuggerKind::LLDB:
983  CmdArgs.push_back("-debugger-tuning=lldb");
984  break;
985  case llvm::DebuggerKind::SCE:
986  CmdArgs.push_back("-debugger-tuning=sce");
987  break;
988  default:
989  break;
990  }
991 }
992 
993 static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
994  const Driver &D, const ToolChain &TC) {
995  assert(A && "Expected non-nullptr argument.");
996  if (TC.supportsDebugInfoOption(A))
997  return true;
998  D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
999  << A->getAsString(Args) << TC.getTripleString();
1000  return false;
1001 }
1002 
1003 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
1004  ArgStringList &CmdArgs,
1005  const Driver &D,
1006  const ToolChain &TC) {
1007  const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
1008  if (!A)
1009  return;
1010  if (checkDebugInfoOption(A, Args, D, TC)) {
1011  if (A->getOption().getID() == options::OPT_gz) {
1012  if (llvm::zlib::isAvailable())
1013  CmdArgs.push_back("--compress-debug-sections");
1014  else
1015  D.Diag(diag::warn_debug_compression_unavailable);
1016  return;
1017  }
1018 
1019  StringRef Value = A->getValue();
1020  if (Value == "none") {
1021  CmdArgs.push_back("--compress-debug-sections=none");
1022  } else if (Value == "zlib" || Value == "zlib-gnu") {
1023  if (llvm::zlib::isAvailable()) {
1024  CmdArgs.push_back(
1025  Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
1026  } else {
1027  D.Diag(diag::warn_debug_compression_unavailable);
1028  }
1029  } else {
1030  D.Diag(diag::err_drv_unsupported_option_argument)
1031  << A->getOption().getName() << Value;
1032  }
1033  }
1034 }
1035 
1036 static const char *RelocationModelName(llvm::Reloc::Model Model) {
1037  switch (Model) {
1038  case llvm::Reloc::Static:
1039  return "static";
1040  case llvm::Reloc::PIC_:
1041  return "pic";
1042  case llvm::Reloc::DynamicNoPIC:
1043  return "dynamic-no-pic";
1044  case llvm::Reloc::ROPI:
1045  return "ropi";
1046  case llvm::Reloc::RWPI:
1047  return "rwpi";
1048  case llvm::Reloc::ROPI_RWPI:
1049  return "ropi-rwpi";
1050  }
1051  llvm_unreachable("Unknown Reloc::Model kind");
1052 }
1053 
1054 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
1055  const Driver &D, const ArgList &Args,
1056  ArgStringList &CmdArgs,
1057  const InputInfo &Output,
1058  const InputInfoList &Inputs) const {
1059  Arg *A;
1060  const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
1061 
1062  CheckPreprocessingOptions(D, Args);
1063 
1064  Args.AddLastArg(CmdArgs, options::OPT_C);
1065  Args.AddLastArg(CmdArgs, options::OPT_CC);
1066 
1067  // Handle dependency file generation.
1068  if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
1069  (A = Args.getLastArg(options::OPT_MD)) ||
1070  (A = Args.getLastArg(options::OPT_MMD))) {
1071  // Determine the output location.
1072  const char *DepFile;
1073  if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1074  DepFile = MF->getValue();
1075  C.addFailureResultFile(DepFile, &JA);
1076  } else if (Output.getType() == types::TY_Dependencies) {
1077  DepFile = Output.getFilename();
1078  } else if (A->getOption().matches(options::OPT_M) ||
1079  A->getOption().matches(options::OPT_MM)) {
1080  DepFile = "-";
1081  } else {
1082  DepFile = getDependencyFileName(Args, Inputs);
1083  C.addFailureResultFile(DepFile, &JA);
1084  }
1085  CmdArgs.push_back("-dependency-file");
1086  CmdArgs.push_back(DepFile);
1087 
1088  // Add a default target if one wasn't specified.
1089  if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
1090  const char *DepTarget;
1091 
1092  // If user provided -o, that is the dependency target, except
1093  // when we are only generating a dependency file.
1094  Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1095  if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1096  DepTarget = OutputOpt->getValue();
1097  } else {
1098  // Otherwise derive from the base input.
1099  //
1100  // FIXME: This should use the computed output file location.
1101  SmallString<128> P(Inputs[0].getBaseInput());
1102  llvm::sys::path::replace_extension(P, "o");
1103  DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1104  }
1105 
1106  if (!A->getOption().matches(options::OPT_MD) && !A->getOption().matches(options::OPT_MMD)) {
1107  CmdArgs.push_back("-w");
1108  }
1109  CmdArgs.push_back("-MT");
1110  SmallString<128> Quoted;
1111  QuoteTarget(DepTarget, Quoted);
1112  CmdArgs.push_back(Args.MakeArgString(Quoted));
1113  }
1114 
1115  if (A->getOption().matches(options::OPT_M) ||
1116  A->getOption().matches(options::OPT_MD))
1117  CmdArgs.push_back("-sys-header-deps");
1118  if ((isa<PrecompileJobAction>(JA) &&
1119  !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1120  Args.hasArg(options::OPT_fmodule_file_deps))
1121  CmdArgs.push_back("-module-file-deps");
1122  }
1123 
1124  if (Args.hasArg(options::OPT_MG)) {
1125  if (!A || A->getOption().matches(options::OPT_MD) ||
1126  A->getOption().matches(options::OPT_MMD))
1127  D.Diag(diag::err_drv_mg_requires_m_or_mm);
1128  CmdArgs.push_back("-MG");
1129  }
1130 
1131  Args.AddLastArg(CmdArgs, options::OPT_MP);
1132  Args.AddLastArg(CmdArgs, options::OPT_MV);
1133 
1134  // Convert all -MQ <target> args to -MT <quoted target>
1135  for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1136  A->claim();
1137 
1138  if (A->getOption().matches(options::OPT_MQ)) {
1139  CmdArgs.push_back("-MT");
1140  SmallString<128> Quoted;
1141  QuoteTarget(A->getValue(), Quoted);
1142  CmdArgs.push_back(Args.MakeArgString(Quoted));
1143 
1144  // -MT flag - no change
1145  } else {
1146  A->render(Args, CmdArgs);
1147  }
1148  }
1149 
1150  // Add offload include arguments specific for CUDA. This must happen before
1151  // we -I or -include anything else, because we must pick up the CUDA headers
1152  // from the particular CUDA installation, rather than from e.g.
1153  // /usr/local/include.
1155  getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1156 
1157  // If we are offloading to a target via OpenMP we need to include the
1158  // openmp_wrappers folder which contains alternative system headers.
1160  getToolChain().getTriple().isNVPTX()){
1161  if (!Args.hasArg(options::OPT_nobuiltininc)) {
1162  // Add openmp_wrappers/* to our system include path. This lets us wrap
1163  // standard library headers.
1165  llvm::sys::path::append(P, "include");
1166  llvm::sys::path::append(P, "openmp_wrappers");
1167  CmdArgs.push_back("-internal-isystem");
1168  CmdArgs.push_back(Args.MakeArgString(P));
1169  }
1170 
1171  CmdArgs.push_back("-include");
1172  CmdArgs.push_back("__clang_openmp_math_declares.h");
1173  }
1174 
1175  // Add -i* options, and automatically translate to
1176  // -include-pch/-include-pth for transparent PCH support. It's
1177  // wonky, but we include looking for .gch so we can support seamless
1178  // replacement into a build system already set up to be generating
1179  // .gch files.
1180 
1181  if (getToolChain().getDriver().IsCLMode()) {
1182  const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1183  const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1184  if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1186  CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1187  }
1188  if (YcArg || YuArg) {
1189  StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1190  if (!isa<PrecompileJobAction>(JA)) {
1191  CmdArgs.push_back("-include-pch");
1192  CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1193  C, !ThroughHeader.empty()
1194  ? ThroughHeader
1195  : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1196  }
1197 
1198  if (ThroughHeader.empty()) {
1199  CmdArgs.push_back(Args.MakeArgString(
1200  Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1201  } else {
1202  CmdArgs.push_back(
1203  Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1204  }
1205  }
1206  }
1207 
1208  bool RenderedImplicitInclude = false;
1209  for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1210  if (A->getOption().matches(options::OPT_include)) {
1211  // Handling of gcc-style gch precompiled headers.
1212  bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1213  RenderedImplicitInclude = true;
1214 
1215  bool FoundPCH = false;
1216  SmallString<128> P(A->getValue());
1217  // We want the files to have a name like foo.h.pch. Add a dummy extension
1218  // so that replace_extension does the right thing.
1219  P += ".dummy";
1220  llvm::sys::path::replace_extension(P, "pch");
1221  if (llvm::sys::fs::exists(P))
1222  FoundPCH = true;
1223 
1224  if (!FoundPCH) {
1225  llvm::sys::path::replace_extension(P, "gch");
1226  if (llvm::sys::fs::exists(P)) {
1227  FoundPCH = true;
1228  }
1229  }
1230 
1231  if (FoundPCH) {
1232  if (IsFirstImplicitInclude) {
1233  A->claim();
1234  CmdArgs.push_back("-include-pch");
1235  CmdArgs.push_back(Args.MakeArgString(P));
1236  continue;
1237  } else {
1238  // Ignore the PCH if not first on command line and emit warning.
1239  D.Diag(diag::warn_drv_pch_not_first_include) << P
1240  << A->getAsString(Args);
1241  }
1242  }
1243  } else if (A->getOption().matches(options::OPT_isystem_after)) {
1244  // Handling of paths which must come late. These entries are handled by
1245  // the toolchain itself after the resource dir is inserted in the right
1246  // search order.
1247  // Do not claim the argument so that the use of the argument does not
1248  // silently go unnoticed on toolchains which do not honour the option.
1249  continue;
1250  }
1251 
1252  // Not translated, render as usual.
1253  A->claim();
1254  A->render(Args, CmdArgs);
1255  }
1256 
1257  Args.AddAllArgs(CmdArgs,
1258  {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1259  options::OPT_F, options::OPT_index_header_map});
1260 
1261  // Add -Wp, and -Xpreprocessor if using the preprocessor.
1262 
1263  // FIXME: There is a very unfortunate problem here, some troubled
1264  // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1265  // really support that we would have to parse and then translate
1266  // those options. :(
1267  Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1268  options::OPT_Xpreprocessor);
1269 
1270  // -I- is a deprecated GCC feature, reject it.
1271  if (Arg *A = Args.getLastArg(options::OPT_I_))
1272  D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1273 
1274  // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1275  // -isysroot to the CC1 invocation.
1276  StringRef sysroot = C.getSysRoot();
1277  if (sysroot != "") {
1278  if (!Args.hasArg(options::OPT_isysroot)) {
1279  CmdArgs.push_back("-isysroot");
1280  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1281  }
1282  }
1283 
1284  // Parse additional include paths from environment variables.
1285  // FIXME: We should probably sink the logic for handling these from the
1286  // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1287  // CPATH - included following the user specified includes (but prior to
1288  // builtin and standard includes).
1289  addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1290  // C_INCLUDE_PATH - system includes enabled when compiling C.
1291  addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1292  // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1293  addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1294  // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1295  addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1296  // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1297  addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1298 
1299  // While adding the include arguments, we also attempt to retrieve the
1300  // arguments of related offloading toolchains or arguments that are specific
1301  // of an offloading programming model.
1302 
1303  // Add C++ include arguments, if needed.
1304  if (types::isCXX(Inputs[0].getType()))
1305  forAllAssociatedToolChains(C, JA, getToolChain(),
1306  [&Args, &CmdArgs](const ToolChain &TC) {
1307  TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1308  });
1309 
1310  // Add system include arguments for all targets but IAMCU.
1311  if (!IsIAMCU)
1312  forAllAssociatedToolChains(C, JA, getToolChain(),
1313  [&Args, &CmdArgs](const ToolChain &TC) {
1314  TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1315  });
1316  else {
1317  // For IAMCU add special include arguments.
1318  getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1319  }
1320 }
1321 
1322 // FIXME: Move to target hook.
1323 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1324  switch (Triple.getArch()) {
1325  default:
1326  return true;
1327 
1328  case llvm::Triple::aarch64:
1329  case llvm::Triple::aarch64_be:
1330  case llvm::Triple::arm:
1331  case llvm::Triple::armeb:
1332  case llvm::Triple::thumb:
1333  case llvm::Triple::thumbeb:
1334  if (Triple.isOSDarwin() || Triple.isOSWindows())
1335  return true;
1336  return false;
1337 
1338  case llvm::Triple::ppc:
1339  case llvm::Triple::ppc64:
1340  if (Triple.isOSDarwin())
1341  return true;
1342  return false;
1343 
1344  case llvm::Triple::hexagon:
1345  case llvm::Triple::ppc64le:
1346  case llvm::Triple::riscv32:
1347  case llvm::Triple::riscv64:
1348  case llvm::Triple::systemz:
1349  case llvm::Triple::xcore:
1350  return false;
1351  }
1352 }
1353 
1354 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1355  switch (Triple.getArch()) {
1356  default:
1357  if (Triple.isOSFuchsia())
1358  return true;
1359  return false;
1360 
1361  case llvm::Triple::xcore:
1362  case llvm::Triple::wasm32:
1363  case llvm::Triple::wasm64:
1364  return true;
1365  }
1366 }
1367 
1368 namespace {
1369 void RenderARMABI(const llvm::Triple &Triple, const ArgList &Args,
1370  ArgStringList &CmdArgs) {
1371  // Select the ABI to use.
1372  // FIXME: Support -meabi.
1373  // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1374  const char *ABIName = nullptr;
1375  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1376  ABIName = A->getValue();
1377  } else {
1378  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1379  ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1380  }
1381 
1382  CmdArgs.push_back("-target-abi");
1383  CmdArgs.push_back(ABIName);
1384 }
1385 }
1386 
1387 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1388  ArgStringList &CmdArgs, bool KernelOrKext) const {
1389  RenderARMABI(Triple, Args, CmdArgs);
1390 
1391  // Determine floating point ABI from the options & target defaults.
1392  arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1393  if (ABI == arm::FloatABI::Soft) {
1394  // Floating point operations and argument passing are soft.
1395  // FIXME: This changes CPP defines, we need -target-soft-float.
1396  CmdArgs.push_back("-msoft-float");
1397  CmdArgs.push_back("-mfloat-abi");
1398  CmdArgs.push_back("soft");
1399  } else if (ABI == arm::FloatABI::SoftFP) {
1400  // Floating point operations are hard, but argument passing is soft.
1401  CmdArgs.push_back("-mfloat-abi");
1402  CmdArgs.push_back("soft");
1403  } else {
1404  // Floating point operations and argument passing are hard.
1405  assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1406  CmdArgs.push_back("-mfloat-abi");
1407  CmdArgs.push_back("hard");
1408  }
1409 
1410  // Forward the -mglobal-merge option for explicit control over the pass.
1411  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1412  options::OPT_mno_global_merge)) {
1413  CmdArgs.push_back("-mllvm");
1414  if (A->getOption().matches(options::OPT_mno_global_merge))
1415  CmdArgs.push_back("-arm-global-merge=false");
1416  else
1417  CmdArgs.push_back("-arm-global-merge=true");
1418  }
1419 
1420  if (!Args.hasFlag(options::OPT_mimplicit_float,
1421  options::OPT_mno_implicit_float, true))
1422  CmdArgs.push_back("-no-implicit-float");
1423 
1424  if (Args.getLastArg(options::OPT_mcmse))
1425  CmdArgs.push_back("-mcmse");
1426 }
1427 
1428 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1429  const ArgList &Args, bool KernelOrKext,
1430  ArgStringList &CmdArgs) const {
1431  const ToolChain &TC = getToolChain();
1432 
1433  // Add the target features
1434  getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1435 
1436  // Add target specific flags.
1437  switch (TC.getArch()) {
1438  default:
1439  break;
1440 
1441  case llvm::Triple::arm:
1442  case llvm::Triple::armeb:
1443  case llvm::Triple::thumb:
1444  case llvm::Triple::thumbeb:
1445  // Use the effective triple, which takes into account the deployment target.
1446  AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1447  CmdArgs.push_back("-fallow-half-arguments-and-returns");
1448  break;
1449 
1450  case llvm::Triple::aarch64:
1451  case llvm::Triple::aarch64_be:
1452  AddAArch64TargetArgs(Args, CmdArgs);
1453  CmdArgs.push_back("-fallow-half-arguments-and-returns");
1454  break;
1455 
1456  case llvm::Triple::mips:
1457  case llvm::Triple::mipsel:
1458  case llvm::Triple::mips64:
1459  case llvm::Triple::mips64el:
1460  AddMIPSTargetArgs(Args, CmdArgs);
1461  break;
1462 
1463  case llvm::Triple::ppc:
1464  case llvm::Triple::ppc64:
1465  case llvm::Triple::ppc64le:
1466  AddPPCTargetArgs(Args, CmdArgs);
1467  break;
1468 
1469  case llvm::Triple::riscv32:
1470  case llvm::Triple::riscv64:
1471  AddRISCVTargetArgs(Args, CmdArgs);
1472  break;
1473 
1474  case llvm::Triple::sparc:
1475  case llvm::Triple::sparcel:
1476  case llvm::Triple::sparcv9:
1477  AddSparcTargetArgs(Args, CmdArgs);
1478  break;
1479 
1480  case llvm::Triple::systemz:
1481  AddSystemZTargetArgs(Args, CmdArgs);
1482  break;
1483 
1484  case llvm::Triple::x86:
1485  case llvm::Triple::x86_64:
1486  AddX86TargetArgs(Args, CmdArgs);
1487  break;
1488 
1489  case llvm::Triple::lanai:
1490  AddLanaiTargetArgs(Args, CmdArgs);
1491  break;
1492 
1493  case llvm::Triple::hexagon:
1494  AddHexagonTargetArgs(Args, CmdArgs);
1495  break;
1496 
1497  case llvm::Triple::wasm32:
1498  case llvm::Triple::wasm64:
1499  AddWebAssemblyTargetArgs(Args, CmdArgs);
1500  break;
1501  }
1502 }
1503 
1504 // Parse -mbranch-protection=<protection>[+<protection>]* where
1505 // <protection> ::= standard | none | [bti,pac-ret[+b-key,+leaf]*]
1506 // Returns a triple of (return address signing Scope, signing key, require
1507 // landing pads)
1508 static std::tuple<StringRef, StringRef, bool>
1509 ParseAArch64BranchProtection(const Driver &D, const ArgList &Args,
1510  const Arg *A) {
1511  StringRef Scope = "none";
1512  StringRef Key = "a_key";
1513  bool IndirectBranches = false;
1514 
1515  StringRef Value = A->getValue();
1516  // This maps onto -mbranch-protection=<scope>+<key>
1517 
1518  if (Value.equals("standard")) {
1519  Scope = "non-leaf";
1520  Key = "a_key";
1521  IndirectBranches = true;
1522 
1523  } else if (!Value.equals("none")) {
1524  SmallVector<StringRef, 4> BranchProtection;
1525  StringRef(A->getValue()).split(BranchProtection, '+');
1526 
1527  auto Protection = BranchProtection.begin();
1528  while (Protection != BranchProtection.end()) {
1529  if (Protection->equals("bti"))
1530  IndirectBranches = true;
1531  else if (Protection->equals("pac-ret")) {
1532  Scope = "non-leaf";
1533  while (++Protection != BranchProtection.end()) {
1534  // Inner loop as "leaf" and "b-key" options must only appear attached
1535  // to pac-ret.
1536  if (Protection->equals("leaf"))
1537  Scope = "all";
1538  else if (Protection->equals("b-key"))
1539  Key = "b_key";
1540  else
1541  break;
1542  }
1543  Protection--;
1544  } else
1545  D.Diag(diag::err_invalid_branch_protection)
1546  << *Protection << A->getAsString(Args);
1547  Protection++;
1548  }
1549  }
1550 
1551  return std::make_tuple(Scope, Key, IndirectBranches);
1552 }
1553 
1554 namespace {
1555 void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1556  ArgStringList &CmdArgs) {
1557  const char *ABIName = nullptr;
1558  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1559  ABIName = A->getValue();
1560  else if (Triple.isOSDarwin())
1561  ABIName = "darwinpcs";
1562  else
1563  ABIName = "aapcs";
1564 
1565  CmdArgs.push_back("-target-abi");
1566  CmdArgs.push_back(ABIName);
1567 }
1568 }
1569 
1570 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1571  ArgStringList &CmdArgs) const {
1572  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1573 
1574  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1575  Args.hasArg(options::OPT_mkernel) ||
1576  Args.hasArg(options::OPT_fapple_kext))
1577  CmdArgs.push_back("-disable-red-zone");
1578 
1579  if (!Args.hasFlag(options::OPT_mimplicit_float,
1580  options::OPT_mno_implicit_float, true))
1581  CmdArgs.push_back("-no-implicit-float");
1582 
1583  RenderAArch64ABI(Triple, Args, CmdArgs);
1584 
1585  if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1586  options::OPT_mno_fix_cortex_a53_835769)) {
1587  CmdArgs.push_back("-mllvm");
1588  if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1589  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1590  else
1591  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1592  } else if (Triple.isAndroid()) {
1593  // Enabled A53 errata (835769) workaround by default on android
1594  CmdArgs.push_back("-mllvm");
1595  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1596  }
1597 
1598  // Forward the -mglobal-merge option for explicit control over the pass.
1599  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1600  options::OPT_mno_global_merge)) {
1601  CmdArgs.push_back("-mllvm");
1602  if (A->getOption().matches(options::OPT_mno_global_merge))
1603  CmdArgs.push_back("-aarch64-enable-global-merge=false");
1604  else
1605  CmdArgs.push_back("-aarch64-enable-global-merge=true");
1606  }
1607 
1608  // Enable/disable return address signing and indirect branch targets.
1609  if (Arg *A = Args.getLastArg(options::OPT_msign_return_address_EQ,
1610  options::OPT_mbranch_protection_EQ)) {
1611 
1612  const Driver &D = getToolChain().getDriver();
1613 
1614  StringRef Scope, Key;
1615  bool IndirectBranches;
1616 
1617  if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1618  Scope = A->getValue();
1619  if (!Scope.equals("none") && !Scope.equals("non-leaf") &&
1620  !Scope.equals("all"))
1621  D.Diag(diag::err_invalid_branch_protection)
1622  << Scope << A->getAsString(Args);
1623  Key = "a_key";
1624  IndirectBranches = false;
1625  } else
1626  std::tie(Scope, Key, IndirectBranches) =
1627  ParseAArch64BranchProtection(D, Args, A);
1628 
1629  CmdArgs.push_back(
1630  Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1631  CmdArgs.push_back(
1632  Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1633  if (IndirectBranches)
1634  CmdArgs.push_back("-mbranch-target-enforce");
1635  }
1636 }
1637 
1638 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1639  ArgStringList &CmdArgs) const {
1640  const Driver &D = getToolChain().getDriver();
1641  StringRef CPUName;
1642  StringRef ABIName;
1643  const llvm::Triple &Triple = getToolChain().getTriple();
1644  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1645 
1646  CmdArgs.push_back("-target-abi");
1647  CmdArgs.push_back(ABIName.data());
1648 
1649  mips::FloatABI ABI = mips::getMipsFloatABI(D, Args);
1650  if (ABI == mips::FloatABI::Soft) {
1651  // Floating point operations and argument passing are soft.
1652  CmdArgs.push_back("-msoft-float");
1653  CmdArgs.push_back("-mfloat-abi");
1654  CmdArgs.push_back("soft");
1655  } else {
1656  // Floating point operations and argument passing are hard.
1657  assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1658  CmdArgs.push_back("-mfloat-abi");
1659  CmdArgs.push_back("hard");
1660  }
1661 
1662  if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
1663  if (A->getOption().matches(options::OPT_mxgot)) {
1664  CmdArgs.push_back("-mllvm");
1665  CmdArgs.push_back("-mxgot");
1666  }
1667  }
1668 
1669  if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1670  options::OPT_mno_ldc1_sdc1)) {
1671  if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1672  CmdArgs.push_back("-mllvm");
1673  CmdArgs.push_back("-mno-ldc1-sdc1");
1674  }
1675  }
1676 
1677  if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1678  options::OPT_mno_check_zero_division)) {
1679  if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1680  CmdArgs.push_back("-mllvm");
1681  CmdArgs.push_back("-mno-check-zero-division");
1682  }
1683  }
1684 
1685  if (Arg *A = Args.getLastArg(options::OPT_G)) {
1686  StringRef v = A->getValue();
1687  CmdArgs.push_back("-mllvm");
1688  CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1689  A->claim();
1690  }
1691 
1692  Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1693  Arg *ABICalls =
1694  Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1695 
1696  // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1697  // -mgpopt is the default for static, -fno-pic environments but these two
1698  // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1699  // the only case where -mllvm -mgpopt is passed.
1700  // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1701  // passed explicitly when compiling something with -mabicalls
1702  // (implictly) in affect. Currently the warning is in the backend.
1703  //
1704  // When the ABI in use is N64, we also need to determine the PIC mode that
1705  // is in use, as -fno-pic for N64 implies -mno-abicalls.
1706  bool NoABICalls =
1707  ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1708 
1709  llvm::Reloc::Model RelocationModel;
1710  unsigned PICLevel;
1711  bool IsPIE;
1712  std::tie(RelocationModel, PICLevel, IsPIE) =
1713  ParsePICArgs(getToolChain(), Args);
1714 
1715  NoABICalls = NoABICalls ||
1716  (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1717 
1718  bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1719  // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1720  if (NoABICalls && (!GPOpt || WantGPOpt)) {
1721  CmdArgs.push_back("-mllvm");
1722  CmdArgs.push_back("-mgpopt");
1723 
1724  Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1725  options::OPT_mno_local_sdata);
1726  Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1727  options::OPT_mno_extern_sdata);
1728  Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1729  options::OPT_mno_embedded_data);
1730  if (LocalSData) {
1731  CmdArgs.push_back("-mllvm");
1732  if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1733  CmdArgs.push_back("-mlocal-sdata=1");
1734  } else {
1735  CmdArgs.push_back("-mlocal-sdata=0");
1736  }
1737  LocalSData->claim();
1738  }
1739 
1740  if (ExternSData) {
1741  CmdArgs.push_back("-mllvm");
1742  if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1743  CmdArgs.push_back("-mextern-sdata=1");
1744  } else {
1745  CmdArgs.push_back("-mextern-sdata=0");
1746  }
1747  ExternSData->claim();
1748  }
1749 
1750  if (EmbeddedData) {
1751  CmdArgs.push_back("-mllvm");
1752  if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1753  CmdArgs.push_back("-membedded-data=1");
1754  } else {
1755  CmdArgs.push_back("-membedded-data=0");
1756  }
1757  EmbeddedData->claim();
1758  }
1759 
1760  } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1761  D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1762 
1763  if (GPOpt)
1764  GPOpt->claim();
1765 
1766  if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1767  StringRef Val = StringRef(A->getValue());
1768  if (mips::hasCompactBranches(CPUName)) {
1769  if (Val == "never" || Val == "always" || Val == "optimal") {
1770  CmdArgs.push_back("-mllvm");
1771  CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1772  } else
1773  D.Diag(diag::err_drv_unsupported_option_argument)
1774  << A->getOption().getName() << Val;
1775  } else
1776  D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1777  }
1778 
1779  if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,
1780  options::OPT_mno_relax_pic_calls)) {
1781  if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {
1782  CmdArgs.push_back("-mllvm");
1783  CmdArgs.push_back("-mips-jalr-reloc=0");
1784  }
1785  }
1786 }
1787 
1788 void Clang::AddPPCTargetArgs(const ArgList &Args,
1789  ArgStringList &CmdArgs) const {
1790  // Select the ABI to use.
1791  const char *ABIName = nullptr;
1792  if (getToolChain().getTriple().isOSLinux())
1793  switch (getToolChain().getArch()) {
1794  case llvm::Triple::ppc64: {
1795  // When targeting a processor that supports QPX, or if QPX is
1796  // specifically enabled, default to using the ABI that supports QPX (so
1797  // long as it is not specifically disabled).
1798  bool HasQPX = false;
1799  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1800  HasQPX = A->getValue() == StringRef("a2q");
1801  HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1802  if (HasQPX) {
1803  ABIName = "elfv1-qpx";
1804  break;
1805  }
1806 
1807  ABIName = "elfv1";
1808  break;
1809  }
1810  case llvm::Triple::ppc64le:
1811  ABIName = "elfv2";
1812  break;
1813  default:
1814  break;
1815  }
1816 
1817  bool IEEELongDouble = false;
1818  for (const Arg *A : Args.filtered(options::OPT_mabi_EQ)) {
1819  StringRef V = A->getValue();
1820  if (V == "ieeelongdouble")
1821  IEEELongDouble = true;
1822  else if (V == "ibmlongdouble")
1823  IEEELongDouble = false;
1824  else if (V != "altivec")
1825  // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1826  // the option if given as we don't have backend support for any targets
1827  // that don't use the altivec abi.
1828  ABIName = A->getValue();
1829  }
1830  if (IEEELongDouble)
1831  CmdArgs.push_back("-mabi=ieeelongdouble");
1832 
1834  ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1835 
1836  if (FloatABI == ppc::FloatABI::Soft) {
1837  // Floating point operations and argument passing are soft.
1838  CmdArgs.push_back("-msoft-float");
1839  CmdArgs.push_back("-mfloat-abi");
1840  CmdArgs.push_back("soft");
1841  } else {
1842  // Floating point operations and argument passing are hard.
1843  assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1844  CmdArgs.push_back("-mfloat-abi");
1845  CmdArgs.push_back("hard");
1846  }
1847 
1848  if (ABIName) {
1849  CmdArgs.push_back("-target-abi");
1850  CmdArgs.push_back(ABIName);
1851  }
1852 }
1853 
1854 void Clang::AddRISCVTargetArgs(const ArgList &Args,
1855  ArgStringList &CmdArgs) const {
1856  // FIXME: currently defaults to the soft-float ABIs. Will need to be
1857  // expanded to select ilp32f, ilp32d, lp64f, lp64d when appropriate.
1858  const char *ABIName = nullptr;
1859  const llvm::Triple &Triple = getToolChain().getTriple();
1860  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1861  ABIName = A->getValue();
1862  else if (Triple.getArch() == llvm::Triple::riscv32)
1863  ABIName = "ilp32";
1864  else if (Triple.getArch() == llvm::Triple::riscv64)
1865  ABIName = "lp64";
1866  else
1867  llvm_unreachable("Unexpected triple!");
1868 
1869  CmdArgs.push_back("-target-abi");
1870  CmdArgs.push_back(ABIName);
1871 }
1872 
1873 void Clang::AddSparcTargetArgs(const ArgList &Args,
1874  ArgStringList &CmdArgs) const {
1876  sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1877 
1878  if (FloatABI == sparc::FloatABI::Soft) {
1879  // Floating point operations and argument passing are soft.
1880  CmdArgs.push_back("-msoft-float");
1881  CmdArgs.push_back("-mfloat-abi");
1882  CmdArgs.push_back("soft");
1883  } else {
1884  // Floating point operations and argument passing are hard.
1885  assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1886  CmdArgs.push_back("-mfloat-abi");
1887  CmdArgs.push_back("hard");
1888  }
1889 }
1890 
1891 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1892  ArgStringList &CmdArgs) const {
1893  if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1894  CmdArgs.push_back("-mbackchain");
1895 }
1896 
1897 void Clang::AddX86TargetArgs(const ArgList &Args,
1898  ArgStringList &CmdArgs) const {
1899  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1900  Args.hasArg(options::OPT_mkernel) ||
1901  Args.hasArg(options::OPT_fapple_kext))
1902  CmdArgs.push_back("-disable-red-zone");
1903 
1904  if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
1905  options::OPT_mno_tls_direct_seg_refs, true))
1906  CmdArgs.push_back("-mno-tls-direct-seg-refs");
1907 
1908  // Default to avoid implicit floating-point for kernel/kext code, but allow
1909  // that to be overridden with -mno-soft-float.
1910  bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1911  Args.hasArg(options::OPT_fapple_kext));
1912  if (Arg *A = Args.getLastArg(
1913  options::OPT_msoft_float, options::OPT_mno_soft_float,
1914  options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1915  const Option &O = A->getOption();
1916  NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1917  O.matches(options::OPT_msoft_float));
1918  }
1919  if (NoImplicitFloat)
1920  CmdArgs.push_back("-no-implicit-float");
1921 
1922  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1923  StringRef Value = A->getValue();
1924  if (Value == "intel" || Value == "att") {
1925  CmdArgs.push_back("-mllvm");
1926  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1927  } else {
1928  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1929  << A->getOption().getName() << Value;
1930  }
1931  } else if (getToolChain().getDriver().IsCLMode()) {
1932  CmdArgs.push_back("-mllvm");
1933  CmdArgs.push_back("-x86-asm-syntax=intel");
1934  }
1935 
1936  // Set flags to support MCU ABI.
1937  if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1938  CmdArgs.push_back("-mfloat-abi");
1939  CmdArgs.push_back("soft");
1940  CmdArgs.push_back("-mstack-alignment=4");
1941  }
1942 }
1943 
1944 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1945  ArgStringList &CmdArgs) const {
1946  CmdArgs.push_back("-mqdsp6-compat");
1947  CmdArgs.push_back("-Wreturn-type");
1948 
1950  CmdArgs.push_back("-mllvm");
1951  CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1952  Twine(G.getValue())));
1953  }
1954 
1955  if (!Args.hasArg(options::OPT_fno_short_enums))
1956  CmdArgs.push_back("-fshort-enums");
1957  if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1958  CmdArgs.push_back("-mllvm");
1959  CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1960  }
1961  CmdArgs.push_back("-mllvm");
1962  CmdArgs.push_back("-machine-sink-split=0");
1963 }
1964 
1965 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1966  ArgStringList &CmdArgs) const {
1967  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1968  StringRef CPUName = A->getValue();
1969 
1970  CmdArgs.push_back("-target-cpu");
1971  CmdArgs.push_back(Args.MakeArgString(CPUName));
1972  }
1973  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1974  StringRef Value = A->getValue();
1975  // Only support mregparm=4 to support old usage. Report error for all other
1976  // cases.
1977  int Mregparm;
1978  if (Value.getAsInteger(10, Mregparm)) {
1979  if (Mregparm != 4) {
1980  getToolChain().getDriver().Diag(
1981  diag::err_drv_unsupported_option_argument)
1982  << A->getOption().getName() << Value;
1983  }
1984  }
1985  }
1986 }
1987 
1988 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1989  ArgStringList &CmdArgs) const {
1990  // Default to "hidden" visibility.
1991  if (!Args.hasArg(options::OPT_fvisibility_EQ,
1992  options::OPT_fvisibility_ms_compat)) {
1993  CmdArgs.push_back("-fvisibility");
1994  CmdArgs.push_back("hidden");
1995  }
1996 }
1997 
1998 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1999  StringRef Target, const InputInfo &Output,
2000  const InputInfo &Input, const ArgList &Args) const {
2001  // If this is a dry run, do not create the compilation database file.
2002  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2003  return;
2004 
2005  using llvm::yaml::escape;
2006  const Driver &D = getToolChain().getDriver();
2007 
2008  if (!CompilationDatabase) {
2009  std::error_code EC;
2010  auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text);
2011  if (EC) {
2012  D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
2013  << EC.message();
2014  return;
2015  }
2016  CompilationDatabase = std::move(File);
2017  }
2018  auto &CDB = *CompilationDatabase;
2019  SmallString<128> Buf;
2020  if (llvm::sys::fs::current_path(Buf))
2021  Buf = ".";
2022  CDB << "{ \"directory\": \"" << escape(Buf) << "\"";
2023  CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
2024  CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
2025  CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
2026  Buf = "-x";
2027  Buf += types::getTypeName(Input.getType());
2028  CDB << ", \"" << escape(Buf) << "\"";
2029  if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
2030  Buf = "--sysroot=";
2031  Buf += D.SysRoot;
2032  CDB << ", \"" << escape(Buf) << "\"";
2033  }
2034  CDB << ", \"" << escape(Input.getFilename()) << "\"";
2035  for (auto &A: Args) {
2036  auto &O = A->getOption();
2037  // Skip language selection, which is positional.
2038  if (O.getID() == options::OPT_x)
2039  continue;
2040  // Skip writing dependency output and the compilation database itself.
2041  if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
2042  continue;
2043  // Skip inputs.
2044  if (O.getKind() == Option::InputClass)
2045  continue;
2046  // All other arguments are quoted and appended.
2047  ArgStringList ASL;
2048  A->render(Args, ASL);
2049  for (auto &it: ASL)
2050  CDB << ", \"" << escape(it) << "\"";
2051  }
2052  Buf = "--target=";
2053  Buf += Target;
2054  CDB << ", \"" << escape(Buf) << "\"]},\n";
2055 }
2056 
2058  const ArgList &Args,
2059  ArgStringList &CmdArgs,
2060  const Driver &D) {
2061  if (UseRelaxAll(C, Args))
2062  CmdArgs.push_back("-mrelax-all");
2063 
2064  // Only default to -mincremental-linker-compatible if we think we are
2065  // targeting the MSVC linker.
2066  bool DefaultIncrementalLinkerCompatible =
2067  C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2068  if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
2069  options::OPT_mno_incremental_linker_compatible,
2070  DefaultIncrementalLinkerCompatible))
2071  CmdArgs.push_back("-mincremental-linker-compatible");
2072 
2073  switch (C.getDefaultToolChain().getArch()) {
2074  case llvm::Triple::arm:
2075  case llvm::Triple::armeb:
2076  case llvm::Triple::thumb:
2077  case llvm::Triple::thumbeb:
2078  if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
2079  StringRef Value = A->getValue();
2080  if (Value == "always" || Value == "never" || Value == "arm" ||
2081  Value == "thumb") {
2082  CmdArgs.push_back("-mllvm");
2083  CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2084  } else {
2085  D.Diag(diag::err_drv_unsupported_option_argument)
2086  << A->getOption().getName() << Value;
2087  }
2088  }
2089  break;
2090  default:
2091  break;
2092  }
2093 
2094  // When passing -I arguments to the assembler we sometimes need to
2095  // unconditionally take the next argument. For example, when parsing
2096  // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2097  // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2098  // arg after parsing the '-I' arg.
2099  bool TakeNextArg = false;
2100 
2101  bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2102  bool UseNoExecStack = C.getDefaultToolChain().isNoExecStackDefault();
2103  const char *MipsTargetFeature = nullptr;
2104  for (const Arg *A :
2105  Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
2106  A->claim();
2107 
2108  for (StringRef Value : A->getValues()) {
2109  if (TakeNextArg) {
2110  CmdArgs.push_back(Value.data());
2111  TakeNextArg = false;
2112  continue;
2113  }
2114 
2115  if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2116  Value == "-mbig-obj")
2117  continue; // LLVM handles bigobj automatically
2118 
2119  switch (C.getDefaultToolChain().getArch()) {
2120  default:
2121  break;
2122  case llvm::Triple::thumb:
2123  case llvm::Triple::thumbeb:
2124  case llvm::Triple::arm:
2125  case llvm::Triple::armeb:
2126  if (Value == "-mthumb")
2127  // -mthumb has already been processed in ComputeLLVMTriple()
2128  // recognize but skip over here.
2129  continue;
2130  break;
2131  case llvm::Triple::mips:
2132  case llvm::Triple::mipsel:
2133  case llvm::Triple::mips64:
2134  case llvm::Triple::mips64el:
2135  if (Value == "--trap") {
2136  CmdArgs.push_back("-target-feature");
2137  CmdArgs.push_back("+use-tcc-in-div");
2138  continue;
2139  }
2140  if (Value == "--break") {
2141  CmdArgs.push_back("-target-feature");
2142  CmdArgs.push_back("-use-tcc-in-div");
2143  continue;
2144  }
2145  if (Value.startswith("-msoft-float")) {
2146  CmdArgs.push_back("-target-feature");
2147  CmdArgs.push_back("+soft-float");
2148  continue;
2149  }
2150  if (Value.startswith("-mhard-float")) {
2151  CmdArgs.push_back("-target-feature");
2152  CmdArgs.push_back("-soft-float");
2153  continue;
2154  }
2155 
2156  MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2157  .Case("-mips1", "+mips1")
2158  .Case("-mips2", "+mips2")
2159  .Case("-mips3", "+mips3")
2160  .Case("-mips4", "+mips4")
2161  .Case("-mips5", "+mips5")
2162  .Case("-mips32", "+mips32")
2163  .Case("-mips32r2", "+mips32r2")
2164  .Case("-mips32r3", "+mips32r3")
2165  .Case("-mips32r5", "+mips32r5")
2166  .Case("-mips32r6", "+mips32r6")
2167  .Case("-mips64", "+mips64")
2168  .Case("-mips64r2", "+mips64r2")
2169  .Case("-mips64r3", "+mips64r3")
2170  .Case("-mips64r5", "+mips64r5")
2171  .Case("-mips64r6", "+mips64r6")
2172  .Default(nullptr);
2173  if (MipsTargetFeature)
2174  continue;
2175  }
2176 
2177  if (Value == "-force_cpusubtype_ALL") {
2178  // Do nothing, this is the default and we don't support anything else.
2179  } else if (Value == "-L") {
2180  CmdArgs.push_back("-msave-temp-labels");
2181  } else if (Value == "--fatal-warnings") {
2182  CmdArgs.push_back("-massembler-fatal-warnings");
2183  } else if (Value == "--noexecstack") {
2184  UseNoExecStack = true;
2185  } else if (Value.startswith("-compress-debug-sections") ||
2186  Value.startswith("--compress-debug-sections") ||
2187  Value == "-nocompress-debug-sections" ||
2188  Value == "--nocompress-debug-sections") {
2189  CmdArgs.push_back(Value.data());
2190  } else if (Value == "-mrelax-relocations=yes" ||
2191  Value == "--mrelax-relocations=yes") {
2192  UseRelaxRelocations = true;
2193  } else if (Value == "-mrelax-relocations=no" ||
2194  Value == "--mrelax-relocations=no") {
2195  UseRelaxRelocations = false;
2196  } else if (Value.startswith("-I")) {
2197  CmdArgs.push_back(Value.data());
2198  // We need to consume the next argument if the current arg is a plain
2199  // -I. The next arg will be the include directory.
2200  if (Value == "-I")
2201  TakeNextArg = true;
2202  } else if (Value.startswith("-gdwarf-")) {
2203  // "-gdwarf-N" options are not cc1as options.
2204  unsigned DwarfVersion = DwarfVersionNum(Value);
2205  if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2206  CmdArgs.push_back(Value.data());
2207  } else {
2208  RenderDebugEnablingArgs(Args, CmdArgs,
2210  DwarfVersion, llvm::DebuggerKind::Default);
2211  }
2212  } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2213  Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2214  // Do nothing, we'll validate it later.
2215  } else if (Value == "-defsym") {
2216  if (A->getNumValues() != 2) {
2217  D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2218  break;
2219  }
2220  const char *S = A->getValue(1);
2221  auto Pair = StringRef(S).split('=');
2222  auto Sym = Pair.first;
2223  auto SVal = Pair.second;
2224 
2225  if (Sym.empty() || SVal.empty()) {
2226  D.Diag(diag::err_drv_defsym_invalid_format) << S;
2227  break;
2228  }
2229  int64_t IVal;
2230  if (SVal.getAsInteger(0, IVal)) {
2231  D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2232  break;
2233  }
2234  CmdArgs.push_back(Value.data());
2235  TakeNextArg = true;
2236  } else if (Value == "-fdebug-compilation-dir") {
2237  CmdArgs.push_back("-fdebug-compilation-dir");
2238  TakeNextArg = true;
2239  } else {
2240  D.Diag(diag::err_drv_unsupported_option_argument)
2241  << A->getOption().getName() << Value;
2242  }
2243  }
2244  }
2245  if (UseRelaxRelocations)
2246  CmdArgs.push_back("--mrelax-relocations");
2247  if (UseNoExecStack)
2248  CmdArgs.push_back("-mnoexecstack");
2249  if (MipsTargetFeature != nullptr) {
2250  CmdArgs.push_back("-target-feature");
2251  CmdArgs.push_back(MipsTargetFeature);
2252  }
2253 
2254  // forward -fembed-bitcode to assmebler
2255  if (C.getDriver().embedBitcodeEnabled() ||
2257  Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2258 }
2259 
2260 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2261  bool OFastEnabled, const ArgList &Args,
2262  ArgStringList &CmdArgs) {
2263  // Handle various floating point optimization flags, mapping them to the
2264  // appropriate LLVM code generation flags. This is complicated by several
2265  // "umbrella" flags, so we do this by stepping through the flags incrementally
2266  // adjusting what we think is enabled/disabled, then at the end setting the
2267  // LLVM flags based on the final state.
2268  bool HonorINFs = true;
2269  bool HonorNaNs = true;
2270  // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2271  bool MathErrno = TC.IsMathErrnoDefault();
2272  bool AssociativeMath = false;
2273  bool ReciprocalMath = false;
2274  bool SignedZeros = true;
2275  bool TrappingMath = true;
2276  StringRef DenormalFPMath = "";
2277  StringRef FPContract = "";
2278 
2279  if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2280  CmdArgs.push_back("-mlimit-float-precision");
2281  CmdArgs.push_back(A->getValue());
2282  }
2283 
2284  for (const Arg *A : Args) {
2285  switch (A->getOption().getID()) {
2286  // If this isn't an FP option skip the claim below
2287  default: continue;
2288 
2289  // Options controlling individual features
2290  case options::OPT_fhonor_infinities: HonorINFs = true; break;
2291  case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2292  case options::OPT_fhonor_nans: HonorNaNs = true; break;
2293  case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2294  case options::OPT_fmath_errno: MathErrno = true; break;
2295  case options::OPT_fno_math_errno: MathErrno = false; break;
2296  case options::OPT_fassociative_math: AssociativeMath = true; break;
2297  case options::OPT_fno_associative_math: AssociativeMath = false; break;
2298  case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2299  case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2300  case options::OPT_fsigned_zeros: SignedZeros = true; break;
2301  case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2302  case options::OPT_ftrapping_math: TrappingMath = true; break;
2303  case options::OPT_fno_trapping_math: TrappingMath = false; break;
2304 
2305  case options::OPT_fdenormal_fp_math_EQ:
2306  DenormalFPMath = A->getValue();
2307  break;
2308 
2309  // Validate and pass through -fp-contract option.
2310  case options::OPT_ffp_contract: {
2311  StringRef Val = A->getValue();
2312  if (Val == "fast" || Val == "on" || Val == "off")
2313  FPContract = Val;
2314  else
2315  D.Diag(diag::err_drv_unsupported_option_argument)
2316  << A->getOption().getName() << Val;
2317  break;
2318  }
2319 
2320  case options::OPT_ffinite_math_only:
2321  HonorINFs = false;
2322  HonorNaNs = false;
2323  break;
2324  case options::OPT_fno_finite_math_only:
2325  HonorINFs = true;
2326  HonorNaNs = true;
2327  break;
2328 
2329  case options::OPT_funsafe_math_optimizations:
2330  AssociativeMath = true;
2331  ReciprocalMath = true;
2332  SignedZeros = false;
2333  TrappingMath = false;
2334  break;
2335  case options::OPT_fno_unsafe_math_optimizations:
2336  AssociativeMath = false;
2337  ReciprocalMath = false;
2338  SignedZeros = true;
2339  TrappingMath = true;
2340  // -fno_unsafe_math_optimizations restores default denormal handling
2341  DenormalFPMath = "";
2342  break;
2343 
2344  case options::OPT_Ofast:
2345  // If -Ofast is the optimization level, then -ffast-math should be enabled
2346  if (!OFastEnabled)
2347  continue;
2348  LLVM_FALLTHROUGH;
2349  case options::OPT_ffast_math:
2350  HonorINFs = false;
2351  HonorNaNs = false;
2352  MathErrno = false;
2353  AssociativeMath = true;
2354  ReciprocalMath = true;
2355  SignedZeros = false;
2356  TrappingMath = false;
2357  // If fast-math is set then set the fp-contract mode to fast.
2358  FPContract = "fast";
2359  break;
2360  case options::OPT_fno_fast_math:
2361  HonorINFs = true;
2362  HonorNaNs = true;
2363  // Turning on -ffast-math (with either flag) removes the need for
2364  // MathErrno. However, turning *off* -ffast-math merely restores the
2365  // toolchain default (which may be false).
2366  MathErrno = TC.IsMathErrnoDefault();
2367  AssociativeMath = false;
2368  ReciprocalMath = false;
2369  SignedZeros = true;
2370  TrappingMath = true;
2371  // -fno_fast_math restores default denormal and fpcontract handling
2372  DenormalFPMath = "";
2373  FPContract = "";
2374  break;
2375  }
2376 
2377  // If we handled this option claim it
2378  A->claim();
2379  }
2380 
2381  if (!HonorINFs)
2382  CmdArgs.push_back("-menable-no-infs");
2383 
2384  if (!HonorNaNs)
2385  CmdArgs.push_back("-menable-no-nans");
2386 
2387  if (MathErrno)
2388  CmdArgs.push_back("-fmath-errno");
2389 
2390  if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2391  !TrappingMath)
2392  CmdArgs.push_back("-menable-unsafe-fp-math");
2393 
2394  if (!SignedZeros)
2395  CmdArgs.push_back("-fno-signed-zeros");
2396 
2397  if (AssociativeMath && !SignedZeros && !TrappingMath)
2398  CmdArgs.push_back("-mreassociate");
2399 
2400  if (ReciprocalMath)
2401  CmdArgs.push_back("-freciprocal-math");
2402 
2403  if (!TrappingMath)
2404  CmdArgs.push_back("-fno-trapping-math");
2405 
2406  if (!DenormalFPMath.empty())
2407  CmdArgs.push_back(
2408  Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2409 
2410  if (!FPContract.empty())
2411  CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2412 
2413  ParseMRecip(D, Args, CmdArgs);
2414 
2415  // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2416  // individual features enabled by -ffast-math instead of the option itself as
2417  // that's consistent with gcc's behaviour.
2418  if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2419  ReciprocalMath && !SignedZeros && !TrappingMath)
2420  CmdArgs.push_back("-ffast-math");
2421 
2422  // Handle __FINITE_MATH_ONLY__ similarly.
2423  if (!HonorINFs && !HonorNaNs)
2424  CmdArgs.push_back("-ffinite-math-only");
2425 
2426  if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2427  CmdArgs.push_back("-mfpmath");
2428  CmdArgs.push_back(A->getValue());
2429  }
2430 
2431  // Disable a codegen optimization for floating-point casts.
2432  if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2433  options::OPT_fstrict_float_cast_overflow, false))
2434  CmdArgs.push_back("-fno-strict-float-cast-overflow");
2435 }
2436 
2437 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2438  const llvm::Triple &Triple,
2439  const InputInfo &Input) {
2440  // Enable region store model by default.
2441  CmdArgs.push_back("-analyzer-store=region");
2442 
2443  // Treat blocks as analysis entry points.
2444  CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2445 
2446  // Add default argument set.
2447  if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2448  CmdArgs.push_back("-analyzer-checker=core");
2449  CmdArgs.push_back("-analyzer-checker=apiModeling");
2450 
2451  if (!Triple.isWindowsMSVCEnvironment()) {
2452  CmdArgs.push_back("-analyzer-checker=unix");
2453  } else {
2454  // Enable "unix" checkers that also work on Windows.
2455  CmdArgs.push_back("-analyzer-checker=unix.API");
2456  CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2457  CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2458  CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2459  CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2460  CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2461  }
2462 
2463  // Disable some unix checkers for PS4.
2464  if (Triple.isPS4CPU()) {
2465  CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2466  CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2467  }
2468 
2469  if (Triple.isOSDarwin())
2470  CmdArgs.push_back("-analyzer-checker=osx");
2471 
2472  CmdArgs.push_back("-analyzer-checker=deadcode");
2473 
2474  if (types::isCXX(Input.getType()))
2475  CmdArgs.push_back("-analyzer-checker=cplusplus");
2476 
2477  if (!Triple.isPS4CPU()) {
2478  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2479  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2480  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2481  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2482  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2483  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2484  }
2485 
2486  // Default nullability checks.
2487  CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2488  CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2489  }
2490 
2491  // Set the output format. The default is plist, for (lame) historical reasons.
2492  CmdArgs.push_back("-analyzer-output");
2493  if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2494  CmdArgs.push_back(A->getValue());
2495  else
2496  CmdArgs.push_back("plist");
2497 
2498  // Disable the presentation of standard compiler warnings when using
2499  // --analyze. We only want to show static analyzer diagnostics or frontend
2500  // errors.
2501  CmdArgs.push_back("-w");
2502 
2503  // Add -Xanalyzer arguments when running as analyzer.
2504  Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2505 }
2506 
2507 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2508  ArgStringList &CmdArgs, bool KernelOrKext) {
2509  const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2510 
2511  // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2512  // doesn't even have a stack!
2513  if (EffectiveTriple.isNVPTX())
2514  return;
2515 
2516  // -stack-protector=0 is default.
2517  unsigned StackProtectorLevel = 0;
2518  unsigned DefaultStackProtectorLevel =
2519  TC.GetDefaultStackProtectorLevel(KernelOrKext);
2520 
2521  if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2522  options::OPT_fstack_protector_all,
2523  options::OPT_fstack_protector_strong,
2524  options::OPT_fstack_protector)) {
2525  if (A->getOption().matches(options::OPT_fstack_protector))
2526  StackProtectorLevel =
2527  std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2528  else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2529  StackProtectorLevel = LangOptions::SSPStrong;
2530  else if (A->getOption().matches(options::OPT_fstack_protector_all))
2531  StackProtectorLevel = LangOptions::SSPReq;
2532  } else {
2533  StackProtectorLevel = DefaultStackProtectorLevel;
2534  }
2535 
2536  if (StackProtectorLevel) {
2537  CmdArgs.push_back("-stack-protector");
2538  CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2539  }
2540 
2541  // --param ssp-buffer-size=
2542  for (const Arg *A : Args.filtered(options::OPT__param)) {
2543  StringRef Str(A->getValue());
2544  if (Str.startswith("ssp-buffer-size=")) {
2545  if (StackProtectorLevel) {
2546  CmdArgs.push_back("-stack-protector-buffer-size");
2547  // FIXME: Verify the argument is a valid integer.
2548  CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2549  }
2550  A->claim();
2551  }
2552  }
2553 }
2554 
2556  const ToolChain &TC,
2557  const ArgList &Args,
2558  ArgStringList &CmdArgs) {
2559  auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
2560  StringRef TrivialAutoVarInit = "";
2561 
2562  for (const Arg *A : Args) {
2563  switch (A->getOption().getID()) {
2564  default:
2565  continue;
2566  case options::OPT_ftrivial_auto_var_init: {
2567  A->claim();
2568  StringRef Val = A->getValue();
2569  if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
2570  TrivialAutoVarInit = Val;
2571  else
2572  D.Diag(diag::err_drv_unsupported_option_argument)
2573  << A->getOption().getName() << Val;
2574  break;
2575  }
2576  }
2577  }
2578 
2579  if (TrivialAutoVarInit.empty())
2580  switch (DefaultTrivialAutoVarInit) {
2582  break;
2584  TrivialAutoVarInit = "pattern";
2585  break;
2587  TrivialAutoVarInit = "zero";
2588  break;
2589  }
2590 
2591  if (!TrivialAutoVarInit.empty()) {
2592  if (TrivialAutoVarInit == "zero" && !Args.hasArg(options::OPT_enable_trivial_var_init_zero))
2593  D.Diag(diag::err_drv_trivial_auto_var_init_zero_disabled);
2594  CmdArgs.push_back(
2595  Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
2596  }
2597 }
2598 
2599 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2600  const unsigned ForwardedArguments[] = {
2601  options::OPT_cl_opt_disable,
2602  options::OPT_cl_strict_aliasing,
2603  options::OPT_cl_single_precision_constant,
2604  options::OPT_cl_finite_math_only,
2605  options::OPT_cl_kernel_arg_info,
2606  options::OPT_cl_unsafe_math_optimizations,
2607  options::OPT_cl_fast_relaxed_math,
2608  options::OPT_cl_mad_enable,
2609  options::OPT_cl_no_signed_zeros,
2610  options::OPT_cl_denorms_are_zero,
2611  options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2612  options::OPT_cl_uniform_work_group_size
2613  };
2614 
2615  if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2616  std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2617  CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2618  }
2619 
2620  for (const auto &Arg : ForwardedArguments)
2621  if (const auto *A = Args.getLastArg(Arg))
2622  CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2623 }
2624 
2625 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2626  ArgStringList &CmdArgs) {
2627  bool ARCMTEnabled = false;
2628  if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2629  if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2630  options::OPT_ccc_arcmt_modify,
2631  options::OPT_ccc_arcmt_migrate)) {
2632  ARCMTEnabled = true;
2633  switch (A->getOption().getID()) {
2634  default: llvm_unreachable("missed a case");
2635  case options::OPT_ccc_arcmt_check:
2636  CmdArgs.push_back("-arcmt-check");
2637  break;
2638  case options::OPT_ccc_arcmt_modify:
2639  CmdArgs.push_back("-arcmt-modify");
2640  break;
2641  case options::OPT_ccc_arcmt_migrate:
2642  CmdArgs.push_back("-arcmt-migrate");
2643  CmdArgs.push_back("-mt-migrate-directory");
2644  CmdArgs.push_back(A->getValue());
2645 
2646  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2647  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2648  break;
2649  }
2650  }
2651  } else {
2652  Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2653  Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2654  Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2655  }
2656 
2657  if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2658  if (ARCMTEnabled)
2659  D.Diag(diag::err_drv_argument_not_allowed_with)
2660  << A->getAsString(Args) << "-ccc-arcmt-migrate";
2661 
2662  CmdArgs.push_back("-mt-migrate-directory");
2663  CmdArgs.push_back(A->getValue());
2664 
2665  if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2666  options::OPT_objcmt_migrate_subscripting,
2667  options::OPT_objcmt_migrate_property)) {
2668  // None specified, means enable them all.
2669  CmdArgs.push_back("-objcmt-migrate-literals");
2670  CmdArgs.push_back("-objcmt-migrate-subscripting");
2671  CmdArgs.push_back("-objcmt-migrate-property");
2672  } else {
2673  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2674  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2675  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2676  }
2677  } else {
2678  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2679  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2680  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2681  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2682  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2683  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2684  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2685  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2686  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2687  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2688  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2689  Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2690  Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2691  Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2692  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2693  Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2694  }
2695 }
2696 
2697 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2698  const ArgList &Args, ArgStringList &CmdArgs) {
2699  // -fbuiltin is default unless -mkernel is used.
2700  bool UseBuiltins =
2701  Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2702  !Args.hasArg(options::OPT_mkernel));
2703  if (!UseBuiltins)
2704  CmdArgs.push_back("-fno-builtin");
2705 
2706  // -ffreestanding implies -fno-builtin.
2707  if (Args.hasArg(options::OPT_ffreestanding))
2708  UseBuiltins = false;
2709 
2710  // Process the -fno-builtin-* options.
2711  for (const auto &Arg : Args) {
2712  const Option &O = Arg->getOption();
2713  if (!O.matches(options::OPT_fno_builtin_))
2714  continue;
2715 
2716  Arg->claim();
2717 
2718  // If -fno-builtin is specified, then there's no need to pass the option to
2719  // the frontend.
2720  if (!UseBuiltins)
2721  continue;
2722 
2723  StringRef FuncName = Arg->getValue();
2724  CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2725  }
2726 
2727  // le32-specific flags:
2728  // -fno-math-builtin: clang should not convert math builtins to intrinsics
2729  // by default.
2730  if (TC.getArch() == llvm::Triple::le32)
2731  CmdArgs.push_back("-fno-math-builtin");
2732 }
2733 
2735  llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Result);
2736  llvm::sys::path::append(Result, "org.llvm.clang.");
2737  appendUserToPath(Result);
2738  llvm::sys::path::append(Result, "ModuleCache");
2739 }
2740 
2741 static void RenderModulesOptions(Compilation &C, const Driver &D,
2742  const ArgList &Args, const InputInfo &Input,
2743  const InputInfo &Output,
2744  ArgStringList &CmdArgs, bool &HaveModules) {
2745  // -fmodules enables the use of precompiled modules (off by default).
2746  // Users can pass -fno-cxx-modules to turn off modules support for
2747  // C++/Objective-C++ programs.
2748  bool HaveClangModules = false;
2749  if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2750  bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2751  options::OPT_fno_cxx_modules, true);
2752  if (AllowedInCXX || !types::isCXX(Input.getType())) {
2753  CmdArgs.push_back("-fmodules");
2754  HaveClangModules = true;
2755  }
2756  }
2757 
2758  HaveModules |= HaveClangModules;
2759  if (Args.hasArg(options::OPT_fmodules_ts)) {
2760  CmdArgs.push_back("-fmodules-ts");
2761  HaveModules = true;
2762  }
2763 
2764  // -fmodule-maps enables implicit reading of module map files. By default,
2765  // this is enabled if we are using Clang's flavor of precompiled modules.
2766  if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2767  options::OPT_fno_implicit_module_maps, HaveClangModules))
2768  CmdArgs.push_back("-fimplicit-module-maps");
2769 
2770  // -fmodules-decluse checks that modules used are declared so (off by default)
2771  if (Args.hasFlag(options::OPT_fmodules_decluse,
2772  options::OPT_fno_modules_decluse, false))
2773  CmdArgs.push_back("-fmodules-decluse");
2774 
2775  // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2776  // all #included headers are part of modules.
2777  if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2778  options::OPT_fno_modules_strict_decluse, false))
2779  CmdArgs.push_back("-fmodules-strict-decluse");
2780 
2781  // -fno-implicit-modules turns off implicitly compiling modules on demand.
2782  bool ImplicitModules = false;
2783  if (!Args.hasFlag(options::OPT_fimplicit_modules,
2784  options::OPT_fno_implicit_modules, HaveClangModules)) {
2785  if (HaveModules)
2786  CmdArgs.push_back("-fno-implicit-modules");
2787  } else if (HaveModules) {
2788  ImplicitModules = true;
2789  // -fmodule-cache-path specifies where our implicitly-built module files
2790  // should be written.
2791  SmallString<128> Path;
2792  if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2793  Path = A->getValue();
2794 
2795  if (C.isForDiagnostics()) {
2796  // When generating crash reports, we want to emit the modules along with
2797  // the reproduction sources, so we ignore any provided module path.
2798  Path = Output.getFilename();
2799  llvm::sys::path::replace_extension(Path, ".cache");
2800  llvm::sys::path::append(Path, "modules");
2801  } else if (Path.empty()) {
2802  // No module path was provided: use the default.
2804  }
2805 
2806  const char Arg[] = "-fmodules-cache-path=";
2807  Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2808  CmdArgs.push_back(Args.MakeArgString(Path));
2809  }
2810 
2811  if (HaveModules) {
2812  // -fprebuilt-module-path specifies where to load the prebuilt module files.
2813  for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2814  CmdArgs.push_back(Args.MakeArgString(
2815  std::string("-fprebuilt-module-path=") + A->getValue()));
2816  A->claim();
2817  }
2818  }
2819 
2820  // -fmodule-name specifies the module that is currently being built (or
2821  // used for header checking by -fmodule-maps).
2822  Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2823 
2824  // -fmodule-map-file can be used to specify files containing module
2825  // definitions.
2826  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2827 
2828  // -fbuiltin-module-map can be used to load the clang
2829  // builtin headers modulemap file.
2830  if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2831  SmallString<128> BuiltinModuleMap(D.ResourceDir);
2832  llvm::sys::path::append(BuiltinModuleMap, "include");
2833  llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2834  if (llvm::sys::fs::exists(BuiltinModuleMap))
2835  CmdArgs.push_back(
2836  Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2837  }
2838 
2839  // The -fmodule-file=<name>=<file> form specifies the mapping of module
2840  // names to precompiled module files (the module is loaded only if used).
2841  // The -fmodule-file=<file> form can be used to unconditionally load
2842  // precompiled module files (whether used or not).
2843  if (HaveModules)
2844  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2845  else
2846  Args.ClaimAllArgs(options::OPT_fmodule_file);
2847 
2848  // When building modules and generating crashdumps, we need to dump a module
2849  // dependency VFS alongside the output.
2850  if (HaveClangModules && C.isForDiagnostics()) {
2851  SmallString<128> VFSDir(Output.getFilename());
2852  llvm::sys::path::replace_extension(VFSDir, ".cache");
2853  // Add the cache directory as a temp so the crash diagnostics pick it up.
2854  C.addTempFile(Args.MakeArgString(VFSDir));
2855 
2856  llvm::sys::path::append(VFSDir, "vfs");
2857  CmdArgs.push_back("-module-dependency-dir");
2858  CmdArgs.push_back(Args.MakeArgString(VFSDir));
2859  }
2860 
2861  if (HaveClangModules)
2862  Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2863 
2864  // Pass through all -fmodules-ignore-macro arguments.
2865  Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2866  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2867  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2868 
2869  Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2870 
2871  if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2872  if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2873  D.Diag(diag::err_drv_argument_not_allowed_with)
2874  << A->getAsString(Args) << "-fbuild-session-timestamp";
2875 
2876  llvm::sys::fs::file_status Status;
2877  if (llvm::sys::fs::status(A->getValue(), Status))
2878  D.Diag(diag::err_drv_no_such_file) << A->getValue();
2879  CmdArgs.push_back(
2880  Args.MakeArgString("-fbuild-session-timestamp=" +
2881  Twine((uint64_t)Status.getLastModificationTime()
2882  .time_since_epoch()
2883  .count())));
2884  }
2885 
2886  if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2887  if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2888  options::OPT_fbuild_session_file))
2889  D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2890 
2891  Args.AddLastArg(CmdArgs,
2892  options::OPT_fmodules_validate_once_per_build_session);
2893  }
2894 
2895  if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
2896  options::OPT_fno_modules_validate_system_headers,
2897  ImplicitModules))
2898  CmdArgs.push_back("-fmodules-validate-system-headers");
2899 
2900  Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2901 }
2902 
2903 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2904  ArgStringList &CmdArgs) {
2905  // -fsigned-char is default.
2906  if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2907  options::OPT_fno_signed_char,
2908  options::OPT_funsigned_char,
2909  options::OPT_fno_unsigned_char)) {
2910  if (A->getOption().matches(options::OPT_funsigned_char) ||
2911  A->getOption().matches(options::OPT_fno_signed_char)) {
2912  CmdArgs.push_back("-fno-signed-char");
2913  }
2914  } else if (!isSignedCharDefault(T)) {
2915  CmdArgs.push_back("-fno-signed-char");
2916  }
2917 
2918  // The default depends on the language standard.
2919  Args.AddLastArg(CmdArgs, options::OPT_fchar8__t, options::OPT_fno_char8__t);
2920 
2921  if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2922  options::OPT_fno_short_wchar)) {
2923  if (A->getOption().matches(options::OPT_fshort_wchar)) {
2924  CmdArgs.push_back("-fwchar-type=short");
2925  CmdArgs.push_back("-fno-signed-wchar");
2926  } else {
2927  bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2928  CmdArgs.push_back("-fwchar-type=int");
2929  if (IsARM && !(T.isOSWindows() || T.isOSNetBSD() ||
2930  T.isOSOpenBSD()))
2931  CmdArgs.push_back("-fno-signed-wchar");
2932  else
2933  CmdArgs.push_back("-fsigned-wchar");
2934  }
2935  }
2936 }
2937 
2938 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2939  const llvm::Triple &T, const ArgList &Args,
2940  ObjCRuntime &Runtime, bool InferCovariantReturns,
2941  const InputInfo &Input, ArgStringList &CmdArgs) {
2942  const llvm::Triple::ArchType Arch = TC.getArch();
2943 
2944  // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2945  // is the default. Except for deployment target of 10.5, next runtime is
2946  // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2947  if (Runtime.isNonFragile()) {
2948  if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2949  options::OPT_fno_objc_legacy_dispatch,
2950  Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2951  if (TC.UseObjCMixedDispatch())
2952  CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2953  else
2954  CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2955  }
2956  }
2957 
2958  // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2959  // to do Array/Dictionary subscripting by default.
2960  if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2961  Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2962  CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2963 
2964  // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2965  // NOTE: This logic is duplicated in ToolChains.cpp.
2966  if (isObjCAutoRefCount(Args)) {
2967  TC.CheckObjCARC();
2968 
2969  CmdArgs.push_back("-fobjc-arc");
2970 
2971  // FIXME: It seems like this entire block, and several around it should be
2972  // wrapped in isObjC, but for now we just use it here as this is where it
2973  // was being used previously.
2974  if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2975  if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2976  CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2977  else
2978  CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2979  }
2980 
2981  // Allow the user to enable full exceptions code emission.
2982  // We default off for Objective-C, on for Objective-C++.
2983  if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2984  options::OPT_fno_objc_arc_exceptions,
2985  /*Default=*/types::isCXX(Input.getType())))
2986  CmdArgs.push_back("-fobjc-arc-exceptions");
2987  }
2988 
2989  // Silence warning for full exception code emission options when explicitly
2990  // set to use no ARC.
2991  if (Args.hasArg(options::OPT_fno_objc_arc)) {
2992  Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2993  Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2994  }
2995 
2996  // Allow the user to control whether messages can be converted to runtime
2997  // functions.
2998  if (types::isObjC(Input.getType())) {
2999  auto *Arg = Args.getLastArg(
3000  options::OPT_fobjc_convert_messages_to_runtime_calls,
3001  options::OPT_fno_objc_convert_messages_to_runtime_calls);
3002  if (Arg &&
3003  Arg->getOption().matches(
3004  options::OPT_fno_objc_convert_messages_to_runtime_calls))
3005  CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
3006  }
3007 
3008  // -fobjc-infer-related-result-type is the default, except in the Objective-C
3009  // rewriter.
3010  if (InferCovariantReturns)
3011  CmdArgs.push_back("-fno-objc-infer-related-result-type");
3012 
3013  // Pass down -fobjc-weak or -fno-objc-weak if present.
3014  if (types::isObjC(Input.getType())) {
3015  auto WeakArg =
3016  Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
3017  if (!WeakArg) {
3018  // nothing to do
3019  } else if (!Runtime.allowsWeak()) {
3020  if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
3021  D.Diag(diag::err_objc_weak_unsupported);
3022  } else {
3023  WeakArg->render(Args, CmdArgs);
3024  }
3025  }
3026 }
3027 
3028 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
3029  ArgStringList &CmdArgs) {
3030  bool CaretDefault = true;
3031  bool ColumnDefault = true;
3032 
3033  if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
3034  options::OPT__SLASH_diagnostics_column,
3035  options::OPT__SLASH_diagnostics_caret)) {
3036  switch (A->getOption().getID()) {
3037  case options::OPT__SLASH_diagnostics_caret:
3038  CaretDefault = true;
3039  ColumnDefault = true;
3040  break;
3041  case options::OPT__SLASH_diagnostics_column:
3042  CaretDefault = false;
3043  ColumnDefault = true;
3044  break;
3045  case options::OPT__SLASH_diagnostics_classic:
3046  CaretDefault = false;
3047  ColumnDefault = false;
3048  break;
3049  }
3050  }
3051 
3052  // -fcaret-diagnostics is default.
3053  if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
3054  options::OPT_fno_caret_diagnostics, CaretDefault))
3055  CmdArgs.push_back("-fno-caret-diagnostics");
3056 
3057  // -fdiagnostics-fixit-info is default, only pass non-default.
3058  if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
3059  options::OPT_fno_diagnostics_fixit_info))
3060  CmdArgs.push_back("-fno-diagnostics-fixit-info");
3061 
3062  // Enable -fdiagnostics-show-option by default.
3063  if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
3064  options::OPT_fno_diagnostics_show_option))
3065  CmdArgs.push_back("-fdiagnostics-show-option");
3066 
3067  if (const Arg *A =
3068  Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
3069  CmdArgs.push_back("-fdiagnostics-show-category");
3070  CmdArgs.push_back(A->getValue());
3071  }
3072 
3073  if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
3074  options::OPT_fno_diagnostics_show_hotness, false))
3075  CmdArgs.push_back("-fdiagnostics-show-hotness");
3076 
3077  if (const Arg *A =
3078  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
3079  std::string Opt =
3080  std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
3081  CmdArgs.push_back(Args.MakeArgString(Opt));
3082  }
3083 
3084  if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
3085  CmdArgs.push_back("-fdiagnostics-format");
3086  CmdArgs.push_back(A->getValue());
3087  }
3088 
3089  if (const Arg *A = Args.getLastArg(
3090  options::OPT_fdiagnostics_show_note_include_stack,
3091  options::OPT_fno_diagnostics_show_note_include_stack)) {
3092  const Option &O = A->getOption();
3093  if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
3094  CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
3095  else
3096  CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
3097  }
3098 
3099  // Color diagnostics are parsed by the driver directly from argv and later
3100  // re-parsed to construct this job; claim any possible color diagnostic here
3101  // to avoid warn_drv_unused_argument and diagnose bad
3102  // OPT_fdiagnostics_color_EQ values.
3103  for (const Arg *A : Args) {
3104  const Option &O = A->getOption();
3105  if (!O.matches(options::OPT_fcolor_diagnostics) &&
3106  !O.matches(options::OPT_fdiagnostics_color) &&
3107  !O.matches(options::OPT_fno_color_diagnostics) &&
3108  !O.matches(options::OPT_fno_diagnostics_color) &&
3109  !O.matches(options::OPT_fdiagnostics_color_EQ))
3110  continue;
3111 
3112  if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
3113  StringRef Value(A->getValue());
3114  if (Value != "always" && Value != "never" && Value != "auto")
3115  D.Diag(diag::err_drv_clang_unsupported)
3116  << ("-fdiagnostics-color=" + Value).str();
3117  }
3118  A->claim();
3119  }
3120 
3121  if (D.getDiags().getDiagnosticOptions().ShowColors)
3122  CmdArgs.push_back("-fcolor-diagnostics");
3123 
3124  if (Args.hasArg(options::OPT_fansi_escape_codes))
3125  CmdArgs.push_back("-fansi-escape-codes");
3126 
3127  if (!Args.hasFlag(options::OPT_fshow_source_location,
3128  options::OPT_fno_show_source_location))
3129  CmdArgs.push_back("-fno-show-source-location");
3130 
3131  if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
3132  CmdArgs.push_back("-fdiagnostics-absolute-paths");
3133 
3134  if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
3135  ColumnDefault))
3136  CmdArgs.push_back("-fno-show-column");
3137 
3138  if (!Args.hasFlag(options::OPT_fspell_checking,
3139  options::OPT_fno_spell_checking))
3140  CmdArgs.push_back("-fno-spell-checking");
3141 }
3142 
3143 enum class DwarfFissionKind { None, Split, Single };
3144 
3146  const ArgList &Args, Arg *&Arg) {
3147  Arg =
3148  Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ);
3149  if (!Arg)
3150  return DwarfFissionKind::None;
3151 
3152  if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
3153  return DwarfFissionKind::Split;
3154 
3155  StringRef Value = Arg->getValue();
3156  if (Value == "split")
3157  return DwarfFissionKind::Split;
3158  if (Value == "single")
3159  return DwarfFissionKind::Single;
3160 
3161  D.Diag(diag::err_drv_unsupported_option_argument)
3162  << Arg->getOption().getName() << Arg->getValue();
3163  return DwarfFissionKind::None;
3164 }
3165 
3166 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
3167  const llvm::Triple &T, const ArgList &Args,
3168  bool EmitCodeView, bool IsWindowsMSVC,
3169  ArgStringList &CmdArgs,
3171  DwarfFissionKind &DwarfFission) {
3172  if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3173  options::OPT_fno_debug_info_for_profiling, false) &&
3175  Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
3176  CmdArgs.push_back("-fdebug-info-for-profiling");
3177 
3178  // The 'g' groups options involve a somewhat intricate sequence of decisions
3179  // about what to pass from the driver to the frontend, but by the time they
3180  // reach cc1 they've been factored into three well-defined orthogonal choices:
3181  // * what level of debug info to generate
3182  // * what dwarf version to write
3183  // * what debugger tuning to use
3184  // This avoids having to monkey around further in cc1 other than to disable
3185  // codeview if not running in a Windows environment. Perhaps even that
3186  // decision should be made in the driver as well though.
3187  unsigned DWARFVersion = 0;
3188  llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
3189 
3190  bool SplitDWARFInlining =
3191  Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
3192  options::OPT_fno_split_dwarf_inlining, true);
3193 
3194  Args.ClaimAllArgs(options::OPT_g_Group);
3195 
3196  Arg* SplitDWARFArg;
3197  DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
3198 
3199  if (DwarfFission != DwarfFissionKind::None &&
3200  !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
3201  DwarfFission = DwarfFissionKind::None;
3202  SplitDWARFInlining = false;
3203  }
3204 
3205  if (const Arg *A =
3206  Args.getLastArg(options::OPT_g_Group, options::OPT_gsplit_dwarf,
3207  options::OPT_gsplit_dwarf_EQ)) {
3208  DebugInfoKind = codegenoptions::LimitedDebugInfo;
3209 
3210  // If the last option explicitly specified a debug-info level, use it.
3211  if (checkDebugInfoOption(A, Args, D, TC) &&
3212  A->getOption().matches(options::OPT_gN_Group)) {
3213  DebugInfoKind = DebugLevelToInfoKind(*A);
3214  // For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
3215  // complicated if you've disabled inline info in the skeleton CUs
3216  // (SplitDWARFInlining) - then there's value in composing split-dwarf and
3217  // line-tables-only, so let those compose naturally in that case.
3218  if (DebugInfoKind == codegenoptions::NoDebugInfo ||
3219  DebugInfoKind == codegenoptions::DebugDirectivesOnly ||
3220  (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
3221  SplitDWARFInlining))
3222  DwarfFission = DwarfFissionKind::None;
3223  }
3224  }
3225 
3226  // If a debugger tuning argument appeared, remember it.
3227  if (const Arg *A =
3228  Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
3229  if (checkDebugInfoOption(A, Args, D, TC)) {
3230  if (A->getOption().matches(options::OPT_glldb))
3231  DebuggerTuning = llvm::DebuggerKind::LLDB;
3232  else if (A->getOption().matches(options::OPT_gsce))
3233  DebuggerTuning = llvm::DebuggerKind::SCE;
3234  else
3235  DebuggerTuning = llvm::DebuggerKind::GDB;
3236  }
3237  }
3238 
3239  // If a -gdwarf argument appeared, remember it.
3240  if (const Arg *A =
3241  Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
3242  options::OPT_gdwarf_4, options::OPT_gdwarf_5))
3243  if (checkDebugInfoOption(A, Args, D, TC))
3244  DWARFVersion = DwarfVersionNum(A->getSpelling());
3245 
3246  if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
3247  if (checkDebugInfoOption(A, Args, D, TC))
3248  EmitCodeView = true;
3249  }
3250 
3251  // If the user asked for debug info but did not explicitly specify -gcodeview
3252  // or -gdwarf, ask the toolchain for the default format.
3253  if (!EmitCodeView && DWARFVersion == 0 &&
3254  DebugInfoKind != codegenoptions::NoDebugInfo) {
3255  switch (TC.getDefaultDebugFormat()) {
3257  EmitCodeView = true;
3258  break;
3260  DWARFVersion = TC.GetDefaultDwarfVersion();
3261  break;
3262  }
3263  }
3264 
3265  // -gline-directives-only supported only for the DWARF debug info.
3266  if (DWARFVersion == 0 && DebugInfoKind == codegenoptions::DebugDirectivesOnly)
3267  DebugInfoKind = codegenoptions::NoDebugInfo;
3268 
3269  // We ignore flag -gstrict-dwarf for now.
3270  // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
3271  Args.ClaimAllArgs(options::OPT_g_flags_Group);
3272 
3273  // Column info is included by default for everything except SCE and
3274  // CodeView. Clang doesn't track end columns, just starting columns, which,
3275  // in theory, is fine for CodeView (and PDB). In practice, however, the
3276  // Microsoft debuggers don't handle missing end columns well, so it's better
3277  // not to include any column info.
3278  if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
3279  (void)checkDebugInfoOption(A, Args, D, TC);
3280  if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
3281  /*Default=*/!EmitCodeView &&
3282  DebuggerTuning != llvm::DebuggerKind::SCE))
3283  CmdArgs.push_back("-dwarf-column-info");
3284 
3285  // FIXME: Move backend command line options to the module.
3286  // If -gline-tables-only or -gline-directives-only is the last option it wins.
3287  if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
3288  if (checkDebugInfoOption(A, Args, D, TC)) {
3289  if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
3290  DebugInfoKind != codegenoptions::DebugDirectivesOnly) {
3291  DebugInfoKind = codegenoptions::LimitedDebugInfo;
3292  CmdArgs.push_back("-dwarf-ext-refs");
3293  CmdArgs.push_back("-fmodule-format=obj");
3294  }
3295  }
3296 
3297  if (T.isOSBinFormatELF() && !SplitDWARFInlining)
3298  CmdArgs.push_back("-fno-split-dwarf-inlining");
3299 
3300  // After we've dealt with all combinations of things that could
3301  // make DebugInfoKind be other than None or DebugLineTablesOnly,
3302  // figure out if we need to "upgrade" it to standalone debug info.
3303  // We parse these two '-f' options whether or not they will be used,
3304  // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3305  bool NeedFullDebug = Args.hasFlag(
3306  options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,
3307  DebuggerTuning == llvm::DebuggerKind::LLDB ||
3309  if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
3310  (void)checkDebugInfoOption(A, Args, D, TC);
3311  if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
3312  DebugInfoKind = codegenoptions::FullDebugInfo;
3313 
3314  if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
3315  false)) {
3316  // Source embedding is a vendor extension to DWARF v5. By now we have
3317  // checked if a DWARF version was stated explicitly, and have otherwise
3318  // fallen back to the target default, so if this is still not at least 5
3319  // we emit an error.
3320  const Arg *A = Args.getLastArg(options::OPT_gembed_source);
3321  if (DWARFVersion < 5)
3322  D.Diag(diag::err_drv_argument_only_allowed_with)
3323  << A->getAsString(Args) << "-gdwarf-5";
3324  else if (checkDebugInfoOption(A, Args, D, TC))
3325  CmdArgs.push_back("-gembed-source");
3326  }
3327 
3328  if (EmitCodeView) {
3329  CmdArgs.push_back("-gcodeview");
3330 
3331  // Emit codeview type hashes if requested.
3332  if (Args.hasFlag(options::OPT_gcodeview_ghash,
3333  options::OPT_gno_codeview_ghash, false)) {
3334  CmdArgs.push_back("-gcodeview-ghash");
3335  }
3336  }
3337 
3338  // Adjust the debug info kind for the given toolchain.
3339  TC.adjustDebugInfoKind(DebugInfoKind, Args);
3340 
3341  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3342  DebuggerTuning);
3343 
3344  // -fdebug-macro turns on macro debug info generation.
3345  if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3346  false))
3347  if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
3348  D, TC))
3349  CmdArgs.push_back("-debug-info-macro");
3350 
3351  // -ggnu-pubnames turns on gnu style pubnames in the backend.
3352  const auto *PubnamesArg =
3353  Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3354  options::OPT_gpubnames, options::OPT_gno_pubnames);
3355  if (DwarfFission != DwarfFissionKind::None ||
3356  DebuggerTuning == llvm::DebuggerKind::LLDB ||
3357  (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
3358  if (!PubnamesArg ||
3359  (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
3360  !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
3361  CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
3362  options::OPT_gpubnames)
3363  ? "-gpubnames"
3364  : "-ggnu-pubnames");
3365 
3366  if (Args.hasFlag(options::OPT_fdebug_ranges_base_address,
3367  options::OPT_fno_debug_ranges_base_address, false)) {
3368  CmdArgs.push_back("-fdebug-ranges-base-address");
3369  }
3370 
3371  // -gdwarf-aranges turns on the emission of the aranges section in the
3372  // backend.
3373  // Always enabled for SCE tuning.
3374  bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
3375  if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
3376  NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
3377  if (NeedAranges) {
3378  CmdArgs.push_back("-mllvm");
3379  CmdArgs.push_back("-generate-arange-section");
3380  }
3381 
3382  if (Args.hasFlag(options::OPT_fdebug_types_section,
3383  options::OPT_fno_debug_types_section, false)) {
3384  if (!T.isOSBinFormatELF()) {
3385  D.Diag(diag::err_drv_unsupported_opt_for_target)
3386  << Args.getLastArg(options::OPT_fdebug_types_section)
3387  ->getAsString(Args)
3388  << T.getTriple();
3389  } else if (checkDebugInfoOption(
3390  Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
3391  TC)) {
3392  CmdArgs.push_back("-mllvm");
3393  CmdArgs.push_back("-generate-type-units");
3394  }
3395  }
3396 
3397  // Decide how to render forward declarations of template instantiations.
3398  // SCE wants full descriptions, others just get them in the name.
3399  if (DebuggerTuning == llvm::DebuggerKind::SCE)
3400  CmdArgs.push_back("-debug-forward-template-params");
3401 
3402  // Do we need to explicitly import anonymous namespaces into the parent
3403  // scope?
3404  if (DebuggerTuning == llvm::DebuggerKind::SCE)
3405  CmdArgs.push_back("-dwarf-explicit-import");
3406 
3407  RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
3408 }
3409 
3411  const InputInfo &Output, const InputInfoList &Inputs,
3412  const ArgList &Args, const char *LinkingOutput) const {
3413  const auto &TC = getToolChain();
3414  const llvm::Triple &RawTriple = TC.getTriple();
3415  const llvm::Triple &Triple = TC.getEffectiveTriple();
3416  const std::string &TripleStr = Triple.getTriple();
3417 
3418  bool KernelOrKext =
3419  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3420  const Driver &D = TC.getDriver();
3421  ArgStringList CmdArgs;
3422 
3423  // Check number of inputs for sanity. We need at least one input.
3424  assert(Inputs.size() >= 1 && "Must have at least one input.");
3425  // CUDA/HIP compilation may have multiple inputs (source file + results of
3426  // device-side compilations). OpenMP device jobs also take the host IR as a
3427  // second input. Module precompilation accepts a list of header files to
3428  // include as part of the module. All other jobs are expected to have exactly
3429  // one input.
3430  bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3431  bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3432  bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3433  bool IsHeaderModulePrecompile = isa<HeaderModulePrecompileJobAction>(JA);
3434 
3435  // A header module compilation doesn't have a main input file, so invent a
3436  // fake one as a placeholder.
3437  const char *ModuleName = [&]{
3438  auto *ModuleNameArg = Args.getLastArg(options::OPT_fmodule_name_EQ);
3439  return ModuleNameArg ? ModuleNameArg->getValue() : "";
3440  }();
3441  InputInfo HeaderModuleInput(Inputs[0].getType(), ModuleName, ModuleName);
3442 
3443  const InputInfo &Input =
3444  IsHeaderModulePrecompile ? HeaderModuleInput : Inputs[0];
3445 
3446  InputInfoList ModuleHeaderInputs;
3447  const InputInfo *CudaDeviceInput = nullptr;
3448  const InputInfo *OpenMPDeviceInput = nullptr;
3449  for (const InputInfo &I : Inputs) {
3450  if (&I == &Input) {
3451  // This is the primary input.
3452  } else if (IsHeaderModulePrecompile &&
3453  types::getPrecompiledType(I.getType()) == types::TY_PCH) {
3454  types::ID Expected = HeaderModuleInput.getType();
3455  if (I.getType() != Expected) {
3456  D.Diag(diag::err_drv_module_header_wrong_kind)
3457  << I.getFilename() << types::getTypeName(I.getType())
3458  << types::getTypeName(Expected);
3459  }
3460  ModuleHeaderInputs.push_back(I);
3461  } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
3462  CudaDeviceInput = &I;
3463  } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
3464  OpenMPDeviceInput = &I;
3465  } else {
3466  llvm_unreachable("unexpectedly given multiple inputs");
3467  }
3468  }
3469 
3470  const llvm::Triple *AuxTriple = IsCuda ? TC.getAuxTriple() : nullptr;
3471  bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3472  bool IsIAMCU = RawTriple.isOSIAMCU();
3473 
3474  // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3475  // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3476  // Windows), we need to pass Windows-specific flags to cc1.
3477  if (IsCuda || IsHIP)
3478  IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3479 
3480  // C++ is not supported for IAMCU.
3481  if (IsIAMCU && types::isCXX(Input.getType()))
3482  D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3483 
3484  // Invoke ourselves in -cc1 mode.
3485  //
3486  // FIXME: Implement custom jobs for internal actions.
3487  CmdArgs.push_back("-cc1");
3488 
3489  // Add the "effective" target triple.
3490  CmdArgs.push_back("-triple");
3491  CmdArgs.push_back(Args.MakeArgString(TripleStr));
3492 
3493  if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3494  DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3495  Args.ClaimAllArgs(options::OPT_MJ);
3496  }
3497 
3498  if (IsCuda || IsHIP) {
3499  // We have to pass the triple of the host if compiling for a CUDA/HIP device
3500  // and vice-versa.
3501  std::string NormalizedTriple;
3504  NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3505  ->getTriple()
3506  .normalize();
3507  else {
3508  // Host-side compilation.
3509  NormalizedTriple =
3512  ->getTriple()
3513  .normalize();
3514  if (IsCuda) {
3515  // We need to figure out which CUDA version we're compiling for, as that
3516  // determines how we load and launch GPU kernels.
3517  auto *CTC = static_cast<const toolchains::CudaToolChain *>(
3519  assert(CTC && "Expected valid CUDA Toolchain.");
3520  if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
3521  CmdArgs.push_back(Args.MakeArgString(
3522  Twine("-target-sdk-version=") +
3523  CudaVersionToString(CTC->CudaInstallation.version())));
3524  }
3525  }
3526  CmdArgs.push_back("-aux-triple");
3527  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3528  }
3529 
3530  if (IsOpenMPDevice) {
3531  // We have to pass the triple of the host if compiling for an OpenMP device.
3532  std::string NormalizedTriple =
3534  ->getTriple()
3535  .normalize();
3536  CmdArgs.push_back("-aux-triple");
3537  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3538  }
3539 
3540  if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3541  Triple.getArch() == llvm::Triple::thumb)) {
3542  unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3543  unsigned Version;
3544  Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3545  if (Version < 7)
3546  D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3547  << TripleStr;
3548  }
3549 
3550  // Push all default warning arguments that are specific to
3551  // the given target. These come before user provided warning options
3552  // are provided.
3553  TC.addClangWarningOptions(CmdArgs);
3554 
3555  // Select the appropriate action.
3556  RewriteKind rewriteKind = RK_None;
3557 
3558  if (isa<AnalyzeJobAction>(JA)) {
3559  assert(JA.getType() == types::TY_Plist && "Invalid output type.");
3560  CmdArgs.push_back("-analyze");
3561  } else if (isa<MigrateJobAction>(JA)) {
3562  CmdArgs.push_back("-migrate");
3563  } else if (isa<PreprocessJobAction>(JA)) {
3564  if (Output.getType() == types::TY_Dependencies)
3565  CmdArgs.push_back("-Eonly");
3566  else {
3567  CmdArgs.push_back("-E");
3568  if (Args.hasArg(options::OPT_rewrite_objc) &&
3569  !Args.hasArg(options::OPT_g_Group))
3570  CmdArgs.push_back("-P");
3571  }
3572  } else if (isa<AssembleJobAction>(JA)) {
3573  CmdArgs.push_back("-emit-obj");
3574 
3575  CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3576 
3577  // Also ignore explicit -force_cpusubtype_ALL option.
3578  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3579  } else if (isa<PrecompileJobAction>(JA)) {
3580  if (JA.getType() == types::TY_Nothing)
3581  CmdArgs.push_back("-fsyntax-only");
3582  else if (JA.getType() == types::TY_ModuleFile)
3583  CmdArgs.push_back(IsHeaderModulePrecompile
3584  ? "-emit-header-module"
3585  : "-emit-module-interface");
3586  else
3587  CmdArgs.push_back("-emit-pch");
3588  } else if (isa<VerifyPCHJobAction>(JA)) {
3589  CmdArgs.push_back("-verify-pch");
3590  } else {
3591  assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
3592  "Invalid action for clang tool.");
3593  if (JA.getType() == types::TY_Nothing) {
3594  CmdArgs.push_back("-fsyntax-only");
3595  } else if (JA.getType() == types::TY_LLVM_IR ||
3596  JA.getType() == types::TY_LTO_IR) {
3597  CmdArgs.push_back("-emit-llvm");
3598  } else if (JA.getType() == types::TY_LLVM_BC ||
3599  JA.getType() == types::TY_LTO_BC) {
3600  CmdArgs.push_back("-emit-llvm-bc");
3601  } else if (JA.getType() == types::TY_IFS) {
3602  StringRef StubFormat =
3603  llvm::StringSwitch<StringRef>(
3604  Args.hasArg(options::OPT_iterface_stub_version_EQ)
3605  ? Args.getLastArgValue(options::OPT_iterface_stub_version_EQ)
3606  : "")
3607  .Case("experimental-yaml-elf-v1", "experimental-yaml-elf-v1")
3608  .Case("experimental-tapi-elf-v1", "experimental-tapi-elf-v1")
3609  .Default("");
3610 
3611  if (StubFormat.empty())
3612  D.Diag(diag::err_drv_invalid_value)
3613  << "Must specify a valid interface stub format type using "
3614  << "-interface-stub-version=<experimental-tapi-elf-v1 | "
3615  "experimental-yaml-elf-v1>";
3616 
3617  CmdArgs.push_back("-emit-interface-stubs");
3618  CmdArgs.push_back(
3619  Args.MakeArgString(Twine("-interface-stub-version=") + StubFormat));
3620  } else if (JA.getType() == types::TY_PP_Asm) {
3621  CmdArgs.push_back("-S");
3622  } else if (JA.getType() == types::TY_AST) {
3623  CmdArgs.push_back("-emit-pch");
3624  } else if (JA.getType() == types::TY_ModuleFile) {
3625  CmdArgs.push_back("-module-file-info");
3626  } else if (JA.getType() == types::TY_RewrittenObjC) {
3627  CmdArgs.push_back("-rewrite-objc");
3628  rewriteKind = RK_NonFragile;
3629  } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3630  CmdArgs.push_back("-rewrite-objc");
3631  rewriteKind = RK_Fragile;
3632  } else {
3633  assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
3634  }
3635 
3636  // Preserve use-list order by default when emitting bitcode, so that
3637  // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3638  // same result as running passes here. For LTO, we don't need to preserve
3639  // the use-list order, since serialization to bitcode is part of the flow.
3640  if (JA.getType() == types::TY_LLVM_BC)
3641  CmdArgs.push_back("-emit-llvm-uselists");
3642 
3643  // Device-side jobs do not support LTO.
3644  bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
3646 
3647  if (D.isUsingLTO() && !isDeviceOffloadAction) {
3648  Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3649 
3650  // The Darwin and PS4 linkers currently use the legacy LTO API, which
3651  // does not support LTO unit features (CFI, whole program vtable opt)
3652  // under ThinLTO.
3653  if (!(RawTriple.isOSDarwin() || RawTriple.isPS4()) ||
3654  D.getLTOMode() == LTOK_Full)
3655  CmdArgs.push_back("-flto-unit");
3656  }
3657  }
3658 
3659  if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3660  if (!types::isLLVMIR(Input.getType()))
3661  D.Diag(diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);
3662  Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3663  }
3664 
3665  if (Args.getLastArg(options::OPT_save_temps_EQ))
3666  Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
3667 
3668  // Embed-bitcode option.
3669  // Only white-listed flags below are allowed to be embedded.
3670  if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3671  (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3672  // Add flags implied by -fembed-bitcode.
3673  Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3674  // Disable all llvm IR level optimizations.
3675  CmdArgs.push_back("-disable-llvm-passes");
3676 
3677  // Render target options such as -fuse-init-array on modern ELF platforms.
3678  TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
3679 
3680  // reject options that shouldn't be supported in bitcode
3681  // also reject kernel/kext
3682  static const constexpr unsigned kBitcodeOptionBlacklist[] = {
3683  options::OPT_mkernel,
3684  options::OPT_fapple_kext,
3685  options::OPT_ffunction_sections,
3686  options::OPT_fno_function_sections,
3687  options::OPT_fdata_sections,
3688  options::OPT_fno_data_sections,
3689  options::OPT_funique_section_names,
3690  options::OPT_fno_unique_section_names,
3691  options::OPT_mrestrict_it,
3692  options::OPT_mno_restrict_it,
3693  options::OPT_mstackrealign,
3694  options::OPT_mno_stackrealign,
3695  options::OPT_mstack_alignment,
3696  options::OPT_mcmodel_EQ,
3697  options::OPT_mlong_calls,
3698  options::OPT_mno_long_calls,
3699  options::OPT_ggnu_pubnames,
3700  options::OPT_gdwarf_aranges,
3701  options::OPT_fdebug_types_section,
3702  options::OPT_fno_debug_types_section,
3703  options::OPT_fdwarf_directory_asm,
3704  options::OPT_fno_dwarf_directory_asm,
3705  options::OPT_mrelax_all,
3706  options::OPT_mno_relax_all,
3707  options::OPT_ftrap_function_EQ,
3708  options::OPT_ffixed_r9,
3709  options::OPT_mfix_cortex_a53_835769,
3710  options::OPT_mno_fix_cortex_a53_835769,
3711  options::OPT_ffixed_x18,
3712  options::OPT_mglobal_merge,
3713  options::OPT_mno_global_merge,
3714  options::OPT_mred_zone,
3715  options::OPT_mno_red_zone,
3716  options::OPT_Wa_COMMA,
3717  options::OPT_Xassembler,
3718  options::OPT_mllvm,
3719  };
3720  for (const auto &A : Args)
3721  if (llvm::find(kBitcodeOptionBlacklist, A->getOption().getID()) !=
3722  std::end(kBitcodeOptionBlacklist))
3723  D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
3724 
3725  // Render the CodeGen options that need to be passed.
3726  if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3727  options::OPT_fno_optimize_sibling_calls))
3728  CmdArgs.push_back("-mdisable-tail-calls");
3729 
3731  CmdArgs);
3732 
3733  // Render ABI arguments
3734  switch (TC.getArch()) {
3735  default: break;
3736  case llvm::Triple::arm:
3737  case llvm::Triple::armeb:
3738  case llvm::Triple::thumbeb:
3739  RenderARMABI(Triple, Args, CmdArgs);
3740  break;
3741  case llvm::Triple::aarch64:
3742  case llvm::Triple::aarch64_be:
3743  RenderAArch64ABI(Triple, Args, CmdArgs);
3744  break;
3745  }
3746 
3747  // Optimization level for CodeGen.
3748  if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3749  if (A->getOption().matches(options::OPT_O4)) {
3750  CmdArgs.push_back("-O3");
3751  D.Diag(diag::warn_O4_is_O3);
3752  } else {
3753  A->render(Args, CmdArgs);
3754  }
3755  }
3756 
3757  // Input/Output file.
3758  if (Output.getType() == types::TY_Dependencies) {
3759  // Handled with other dependency code.
3760  } else if (Output.isFilename()) {
3761  CmdArgs.push_back("-o");
3762  CmdArgs.push_back(Output.getFilename());
3763  } else {
3764  assert(Output.isNothing() && "Input output.");
3765  }
3766 
3767  for (const auto &II : Inputs) {
3768  addDashXForInput(Args, II, CmdArgs);
3769  if (II.isFilename())
3770  CmdArgs.push_back(II.getFilename());
3771  else
3772  II.getInputArg().renderAsInput(Args, CmdArgs);
3773  }
3774 
3775  C.addCommand(llvm::make_unique<Command>(JA, *this, D.getClangProgramPath(),
3776  CmdArgs, Inputs));
3777  return;
3778  }
3779 
3781  CmdArgs.push_back("-fembed-bitcode=marker");
3782 
3783  // We normally speed up the clang process a bit by skipping destructors at
3784  // exit, but when we're generating diagnostics we can rely on some of the
3785  // cleanup.
3786  if (!C.isForDiagnostics())
3787  CmdArgs.push_back("-disable-free");
3788 
3789 #ifdef NDEBUG
3790  const bool IsAssertBuild = false;
3791 #else
3792  const bool IsAssertBuild = true;
3793 #endif
3794 
3795  // Disable the verification pass in -asserts builds.
3796  if (!IsAssertBuild)
3797  CmdArgs.push_back("-disable-llvm-verifier");
3798 
3799  // Discard value names in assert builds unless otherwise specified.
3800  if (Args.hasFlag(options::OPT_fdiscard_value_names,
3801  options::OPT_fno_discard_value_names, !IsAssertBuild))
3802  CmdArgs.push_back("-discard-value-names");
3803 
3804  // Set the main file name, so that debug info works even with
3805  // -save-temps.
3806  CmdArgs.push_back("-main-file-name");
3807  CmdArgs.push_back(getBaseInputName(Args, Input));
3808 
3809  // Some flags which affect the language (via preprocessor
3810  // defines).
3811  if (Args.hasArg(options::OPT_static))
3812  CmdArgs.push_back("-static-define");
3813 
3814  if (Args.hasArg(options::OPT_municode))
3815  CmdArgs.push_back("-DUNICODE");
3816 
3817  if (isa<AnalyzeJobAction>(JA))
3818  RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3819 
3820  // Enable compatilibily mode to avoid analyzer-config related errors.
3821  // Since we can't access frontend flags through hasArg, let's manually iterate
3822  // through them.
3823  bool FoundAnalyzerConfig = false;
3824  for (auto Arg : Args.filtered(options::OPT_Xclang))
3825  if (StringRef(Arg->getValue()) == "-analyzer-config") {
3826  FoundAnalyzerConfig = true;
3827  break;
3828  }
3829  if (!FoundAnalyzerConfig)
3830  for (auto Arg : Args.filtered(options::OPT_Xanalyzer))
3831  if (StringRef(Arg->getValue()) == "-analyzer-config") {
3832  FoundAnalyzerConfig = true;
3833  break;
3834  }
3835  if (FoundAnalyzerConfig)
3836  CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
3837 
3838  CheckCodeGenerationOptions(D, Args);
3839 
3840  unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
3841  assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
3842  if (FunctionAlignment) {
3843  CmdArgs.push_back("-function-alignment");
3844  CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
3845  }
3846 
3847  llvm::Reloc::Model RelocationModel;
3848  unsigned PICLevel;
3849  bool IsPIE;
3850  std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
3851 
3852  const char *RMName = RelocationModelName(RelocationModel);
3853 
3854  if ((RelocationModel == llvm::Reloc::ROPI ||
3855  RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3856  types::isCXX(Input.getType()) &&
3857  !Args.hasArg(options::OPT_fallow_unsupported))
3858  D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3859 
3860  if (RMName) {
3861  CmdArgs.push_back("-mrelocation-model");
3862  CmdArgs.push_back(RMName);
3863  }
3864  if (PICLevel > 0) {
3865  CmdArgs.push_back("-pic-level");
3866  CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3867  if (IsPIE)
3868  CmdArgs.push_back("-pic-is-pie");
3869  }
3870 
3871  if (RelocationModel == llvm::Reloc::ROPI ||
3872  RelocationModel == llvm::Reloc::ROPI_RWPI)
3873  CmdArgs.push_back("-fropi");
3874  if (RelocationModel == llvm::Reloc::RWPI ||
3875  RelocationModel == llvm::Reloc::ROPI_RWPI)
3876  CmdArgs.push_back("-frwpi");
3877 
3878  if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3879  CmdArgs.push_back("-meabi");
3880  CmdArgs.push_back(A->getValue());
3881  }
3882 
3883  CmdArgs.push_back("-mthread-model");
3884  if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3885  if (!TC.isThreadModelSupported(A->getValue()))
3886  D.Diag(diag::err_drv_invalid_thread_model_for_target)
3887  << A->getValue() << A->getAsString(Args);
3888  CmdArgs.push_back(A->getValue());
3889  }
3890  else
3891  CmdArgs.push_back(Args.MakeArgString(TC.getThreadModel()));
3892 
3893  Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3894 
3895  if (Args.hasFlag(options::OPT_fmerge_all_constants,
3896  options::OPT_fno_merge_all_constants, false))
3897  CmdArgs.push_back("-fmerge-all-constants");
3898 
3899  if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
3900  options::OPT_fdelete_null_pointer_checks, false))
3901  CmdArgs.push_back("-fno-delete-null-pointer-checks");
3902 
3903  // LLVM Code Generator Options.
3904 
3905  if (Args.hasArg(options::OPT_frewrite_map_file) ||
3906  Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3907  for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3908  options::OPT_frewrite_map_file_EQ)) {
3909  StringRef Map = A->getValue();
3910  if (!llvm::sys::fs::exists(Map)) {
3911  D.Diag(diag::err_drv_no_such_file) << Map;
3912  } else {
3913  CmdArgs.push_back("-frewrite-map-file");
3914  CmdArgs.push_back(A->getValue());
3915  A->claim();
3916  }
3917  }
3918  }
3919 
3920  if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3921  StringRef v = A->getValue();
3922  CmdArgs.push_back("-mllvm");
3923  CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3924  A->claim();
3925  }
3926 
3927  if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3928  true))
3929  CmdArgs.push_back("-fno-jump-tables");
3930 
3931  if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3932  options::OPT_fno_profile_sample_accurate, false))
3933  CmdArgs.push_back("-fprofile-sample-accurate");
3934 
3935  if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3936  options::OPT_fno_preserve_as_comments, true))
3937  CmdArgs.push_back("-fno-preserve-as-comments");
3938 
3939  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3940  CmdArgs.push_back("-mregparm");
3941  CmdArgs.push_back(A->getValue());
3942  }
3943 
3944  if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3945  options::OPT_freg_struct_return)) {
3946  if (TC.getArch() != llvm::Triple::x86) {
3947  D.Diag(diag::err_drv_unsupported_opt_for_target)
3948  << A->getSpelling() << RawTriple.str();
3949  } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3950  CmdArgs.push_back("-fpcc-struct-return");
3951  } else {
3952  assert(A->getOption().matches(options::OPT_freg_struct_return));
3953  CmdArgs.push_back("-freg-struct-return");
3954  }
3955  }
3956 
3957  if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3958  CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3959 
3960  if (shouldUseFramePointer(Args, RawTriple))
3961  CmdArgs.push_back("-mdisable-fp-elim");
3962  if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3963  options::OPT_fno_zero_initialized_in_bss))
3964  CmdArgs.push_back("-mno-zero-initialized-in-bss");
3965 
3966  bool OFastEnabled = isOptimizationLevelFast(Args);
3967  // If -Ofast is the optimization level, then -fstrict-aliasing should be
3968  // enabled. This alias option is being used to simplify the hasFlag logic.
3969  OptSpecifier StrictAliasingAliasOption =
3970  OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3971  // We turn strict aliasing off by default if we're in CL mode, since MSVC
3972  // doesn't do any TBAA.
3973  bool TBAAOnByDefault = !D.IsCLMode();
3974  if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3975  options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3976  CmdArgs.push_back("-relaxed-aliasing");
3977  if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3978  options::OPT_fno_struct_path_tbaa))
3979  CmdArgs.push_back("-no-struct-path-tbaa");
3980  if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3981  false))
3982  CmdArgs.push_back("-fstrict-enums");
3983  if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3984  true))
3985  CmdArgs.push_back("-fno-strict-return");
3986  if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3987  options::OPT_fno_allow_editor_placeholders, false))
3988  CmdArgs.push_back("-fallow-editor-placeholders");
3989  if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3990  options::OPT_fno_strict_vtable_pointers,
3991  false))
3992  CmdArgs.push_back("-fstrict-vtable-pointers");
3993  if (Args.hasFlag(options::OPT_fforce_emit_vtables,
3994  options::OPT_fno_force_emit_vtables,
3995  false))
3996  CmdArgs.push_back("-fforce-emit-vtables");
3997  if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3998  options::OPT_fno_optimize_sibling_calls))
3999  CmdArgs.push_back("-mdisable-tail-calls");
4000  if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
4001  options::OPT_fescaping_block_tail_calls, false))
4002  CmdArgs.push_back("-fno-escaping-block-tail-calls");
4003 
4004  Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
4005  options::OPT_fno_fine_grained_bitfield_accesses);
4006 
4007  // Handle segmented stacks.
4008  if (Args.hasArg(options::OPT_fsplit_stack))
4009  CmdArgs.push_back("-split-stacks");
4010 
4011  RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs);
4012 
4013  if (Arg *A = Args.getLastArg(options::OPT_mlong_double_64,
4014  options::OPT_mlong_double_128)) {
4015  if (TC.getArch() == llvm::Triple::x86 ||
4016  TC.getArch() == llvm::Triple::x86_64 ||
4017  TC.getArch() == llvm::Triple::ppc || TC.getTriple().isPPC64())
4018  A->render(Args, CmdArgs);
4019  else
4020  D.Diag(diag::err_drv_unsupported_opt_for_target)
4021  << A->getAsString(Args) << TripleStr;
4022  }
4023 
4024  // Decide whether to use verbose asm. Verbose assembly is the default on
4025  // toolchains which have the integrated assembler on by default.
4026  bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
4027  if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
4028  IsIntegratedAssemblerDefault) ||
4029  Args.hasArg(options::OPT_dA))
4030  CmdArgs.push_back("-masm-verbose");
4031 
4032  if (!TC.useIntegratedAs())
4033  CmdArgs.push_back("-no-integrated-as");
4034 
4035  if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
4036  CmdArgs.push_back("-mdebug-pass");
4037  CmdArgs.push_back("Structure");
4038  }
4039  if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
4040  CmdArgs.push_back("-mdebug-pass");
4041  CmdArgs.push_back("Arguments");
4042  }
4043 
4044  // Enable -mconstructor-aliases except on darwin, where we have to work around
4045  // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
4046  // aliases aren't supported.
4047  if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
4048  CmdArgs.push_back("-mconstructor-aliases");
4049 
4050  // Darwin's kernel doesn't support guard variables; just die if we
4051  // try to use them.
4052  if (KernelOrKext && RawTriple.isOSDarwin())
4053  CmdArgs.push_back("-fforbid-guard-variables");
4054 
4055  if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
4056  false)) {
4057  CmdArgs.push_back("-mms-bitfields");
4058  }
4059 
4060  if (Args.hasFlag(options::OPT_mpie_copy_relocations,
4061  options::OPT_mno_pie_copy_relocations,
4062  false)) {
4063  CmdArgs.push_back("-mpie-copy-relocations");
4064  }
4065 
4066  if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
4067  CmdArgs.push_back("-fno-plt");
4068  }
4069 
4070  // -fhosted is default.
4071  // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
4072  // use Freestanding.
4073  bool Freestanding =
4074  Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
4075  KernelOrKext;
4076  if (Freestanding)
4077  CmdArgs.push_back("-ffreestanding");
4078 
4079  // This is a coarse approximation of what llvm-gcc actually does, both
4080  // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
4081  // complicated ways.
4082  bool AsynchronousUnwindTables =
4083  Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
4084  options::OPT_fno_asynchronous_unwind_tables,
4085  (TC.IsUnwindTablesDefault(Args) ||
4086  TC.getSanitizerArgs().needsUnwindTables()) &&
4087  !Freestanding);
4088  if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
4089  AsynchronousUnwindTables))
4090  CmdArgs.push_back("-munwind-tables");
4091 
4092  TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
4093 
4094  // FIXME: Handle -mtune=.
4095  (void)Args.hasArg(options::OPT_mtune_EQ);
4096 
4097  if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
4098  CmdArgs.push_back("-mcode-model");
4099  CmdArgs.push_back(A->getValue());
4100  }
4101 
4102  // Add the target cpu
4103  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
4104  if (!CPU.empty()) {
4105  CmdArgs.push_back("-target-cpu");
4106  CmdArgs.push_back(Args.MakeArgString(CPU));
4107  }
4108 
4109  RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
4110 
4111  // These two are potentially updated by AddClangCLArgs.
4113  bool EmitCodeView = false;
4114 
4115  // Add clang-cl arguments.
4116  types::ID InputType = Input.getType();
4117  if (D.IsCLMode())
4118  AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
4119 
4120  DwarfFissionKind DwarfFission;
4121  RenderDebugOptions(TC, D, RawTriple, Args, EmitCodeView, IsWindowsMSVC,
4122  CmdArgs, DebugInfoKind, DwarfFission);
4123 
4124  // Add the split debug info name to the command lines here so we
4125  // can propagate it to the backend.
4126  bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
4127  TC.getTriple().isOSBinFormatELF() &&
4128  (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4129  isa<BackendJobAction>(JA));
4130  if (SplitDWARF) {
4131  const char *SplitDWARFOut = SplitDebugName(Args, Input, Output);
4132  CmdArgs.push_back("-split-dwarf-file");
4133  CmdArgs.push_back(SplitDWARFOut);
4134  if (DwarfFission == DwarfFissionKind::Split) {
4135  CmdArgs.push_back("-split-dwarf-output");
4136  CmdArgs.push_back(SplitDWARFOut);
4137  }
4138  }
4139 
4140  // Pass the linker version in use.
4141  if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
4142  CmdArgs.push_back("-target-linker-version");
4143  CmdArgs.push_back(A->getValue());
4144  }
4145 
4146  if (!shouldUseLeafFramePointer(Args, RawTriple))
4147  CmdArgs.push_back("-momit-leaf-frame-pointer");
4148 
4149  // Explicitly error on some things we know we don't support and can't just
4150  // ignore.
4151  if (!Args.hasArg(options::OPT_fallow_unsupported)) {
4152  Arg *Unsupported;
4153  if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
4154  TC.getArch() == llvm::Triple::x86) {
4155  if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
4156  (Unsupported = Args.getLastArg(options::OPT_mkernel)))
4157  D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
4158  << Unsupported->getOption().getName();
4159  }
4160  // The faltivec option has been superseded by the maltivec option.
4161  if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
4162  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4163  << Unsupported->getOption().getName()
4164  << "please use -maltivec and include altivec.h explicitly";
4165  if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
4166  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4167  << Unsupported->getOption().getName() << "please use -mno-altivec";
4168  }
4169 
4170  Args.AddAllArgs(CmdArgs, options::OPT_v);
4171  Args.AddLastArg(CmdArgs, options::OPT_H);
4172  if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
4173  CmdArgs.push_back("-header-include-file");
4174  CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
4175  : "-");
4176  }
4177  Args.AddLastArg(CmdArgs, options::OPT_P);
4178  Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
4179 
4180  if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
4181  CmdArgs.push_back("-diagnostic-log-file");
4182  CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
4183  : "-");
4184  }
4185 
4186  bool UseSeparateSections = isUseSeparateSections(Triple);
4187 
4188  if (Args.hasFlag(options::OPT_ffunction_sections,
4189  options::OPT_fno_function_sections, UseSeparateSections)) {
4190  CmdArgs.push_back("-ffunction-sections");
4191  }
4192 
4193  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
4194  UseSeparateSections)) {
4195  CmdArgs.push_back("-fdata-sections");
4196  }
4197 
4198  if (!Args.hasFlag(options::OPT_funique_section_names,
4199  options::OPT_fno_unique_section_names, true))
4200  CmdArgs.push_back("-fno-unique-section-names");
4201 
4202  Args.AddLastArg(CmdArgs, options::OPT_finstrument_functions,
4203  options::OPT_finstrument_functions_after_inlining,
4204  options::OPT_finstrument_function_entry_bare);
4205 
4206  // NVPTX doesn't support PGO or coverage. There's no runtime support for
4207  // sampling, overhead of call arc collection is way too high and there's no
4208  // way to collect the output.
4209  if (!Triple.isNVPTX())
4210  addPGOAndCoverageFlags(TC, C, D, Output, Args, CmdArgs);
4211 
4212  Args.AddLastArg(CmdArgs, options::OPT_fclang_abi_compat_EQ);
4213 
4214  // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
4215  if (RawTriple.isPS4CPU() &&
4216  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
4217  PS4cpu::addProfileRTArgs(TC, Args, CmdArgs);
4218  PS4cpu::addSanitizerArgs(TC, CmdArgs);
4219  }
4220 
4221  // Pass options for controlling the default header search paths.
4222  if (Args.hasArg(options::OPT_nostdinc)) {
4223  CmdArgs.push_back("-nostdsysteminc");
4224  CmdArgs.push_back("-nobuiltininc");
4225  } else {
4226  if (Args.hasArg(options::OPT_nostdlibinc))
4227  CmdArgs.push_back("-nostdsysteminc");
4228  Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
4229  Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
4230  }
4231 
4232  // Pass the path to compiler resource files.
4233  CmdArgs.push_back("-resource-dir");
4234  CmdArgs.push_back(D.ResourceDir.c_str());
4235 
4236  Args.AddLastArg(CmdArgs, options::OPT_working_directory);
4237 
4238  RenderARCMigrateToolOptions(D, Args, CmdArgs);
4239 
4240  // Add preprocessing options like -I, -D, etc. if we are using the
4241  // preprocessor.
4242  //
4243  // FIXME: Support -fpreprocessed
4245  AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
4246 
4247  // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
4248  // that "The compiler can only warn and ignore the option if not recognized".
4249  // When building with ccache, it will pass -D options to clang even on
4250  // preprocessed inputs and configure concludes that -fPIC is not supported.
4251  Args.ClaimAllArgs(options::OPT_D);
4252 
4253  // Manually translate -O4 to -O3; let clang reject others.
4254  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4255  if (A->getOption().matches(options::OPT_O4)) {
4256  CmdArgs.push_back("-O3");
4257  D.Diag(diag::warn_O4_is_O3);
4258  } else {
4259  A->render(Args, CmdArgs);
4260  }
4261  }
4262 
4263  // Warn about ignored options to clang.
4264  for (const Arg *A :
4265  Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
4266  D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
4267  A->claim();
4268  }
4269 
4270  for (const Arg *A :
4271  Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
4272  D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
4273  A->claim();
4274  }
4275 
4276  claimNoWarnArgs(Args);
4277 
4278  Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
4279 
4280  Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
4281  if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
4282  CmdArgs.push_back("-pedantic");
4283  Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
4284  Args.AddLastArg(CmdArgs, options::OPT_w);
4285 
4286  // Fixed point flags
4287  if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
4288  /*Default=*/false))
4289  Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
4290 
4291  // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
4292  // (-ansi is equivalent to -std=c89 or -std=c++98).
4293  //
4294  // If a std is supplied, only add -trigraphs if it follows the
4295  // option.
4296  bool ImplyVCPPCXXVer = false;
4297  const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
4298  if (Std) {
4299  if (Std->getOption().matches(options::OPT_ansi))
4300  if (types::isCXX(InputType))
4301  CmdArgs.push_back("-std=c++98");
4302  else
4303  CmdArgs.push_back("-std=c89");
4304  else
4305  Std->render(Args, CmdArgs);
4306 
4307  // If -f(no-)trigraphs appears after the language standard flag, honor it.
4308  if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
4309  options::OPT_ftrigraphs,
4310  options::OPT_fno_trigraphs))
4311  if (A != Std)
4312  A->render(Args, CmdArgs);
4313  } else {
4314  // Honor -std-default.
4315  //
4316  // FIXME: Clang doesn't correctly handle -std= when the input language
4317  // doesn't match. For the time being just ignore this for C++ inputs;
4318  // eventually we want to do all the standard defaulting here instead of
4319  // splitting it between the driver and clang -cc1.
4320  if (!types::isCXX(InputType))
4321  Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
4322  /*Joined=*/true);
4323  else if (IsWindowsMSVC)
4324  ImplyVCPPCXXVer = true;
4325 
4326  Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
4327  options::OPT_fno_trigraphs);
4328  }
4329 
4330  // GCC's behavior for -Wwrite-strings is a bit strange:
4331  // * In C, this "warning flag" changes the types of string literals from
4332  // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
4333  // for the discarded qualifier.
4334  // * In C++, this is just a normal warning flag.
4335  //
4336  // Implementing this warning correctly in C is hard, so we follow GCC's
4337  // behavior for now. FIXME: Directly diagnose uses of a string literal as
4338  // a non-const char* in C, rather than using this crude hack.
4339  if (!types::isCXX(InputType)) {
4340  // FIXME: This should behave just like a warning flag, and thus should also
4341  // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
4342  Arg *WriteStrings =
4343  Args.getLastArg(options::OPT_Wwrite_strings,
4344  options::OPT_Wno_write_strings, options::OPT_w);
4345  if (WriteStrings &&
4346  WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
4347  CmdArgs.push_back("-fconst-strings");
4348  }
4349 
4350  // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
4351  // during C++ compilation, which it is by default. GCC keeps this define even
4352  // in the presence of '-w', match this behavior bug-for-bug.
4353  if (types::isCXX(InputType) &&
4354  Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
4355  true)) {
4356  CmdArgs.push_back("-fdeprecated-macro");
4357  }
4358 
4359  // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
4360  if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
4361  if (Asm->getOption().matches(options::OPT_fasm))
4362  CmdArgs.push_back("-fgnu-keywords");
4363  else
4364  CmdArgs.push_back("-fno-gnu-keywords");
4365  }
4366 
4367  if (ShouldDisableDwarfDirectory(Args, TC))
4368  CmdArgs.push_back("-fno-dwarf-directory-asm");
4369 
4370  if (ShouldDisableAutolink(Args, TC))
4371  CmdArgs.push_back("-fno-autolink");
4372 
4373  // Add in -fdebug-compilation-dir if necessary.
4374  addDebugCompDirArg(Args, CmdArgs);
4375 
4376  addDebugPrefixMapArg(D, Args, CmdArgs);
4377 
4378  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
4379  options::OPT_ftemplate_depth_EQ)) {
4380  CmdArgs.push_back("-ftemplate-depth");
4381  CmdArgs.push_back(A->getValue());
4382  }
4383 
4384  if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
4385  CmdArgs.push_back("-foperator-arrow-depth");
4386  CmdArgs.push_back(A->getValue());
4387  }
4388 
4389  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
4390  CmdArgs.push_back("-fconstexpr-depth");
4391  CmdArgs.push_back(A->getValue());
4392  }
4393 
4394  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
4395  CmdArgs.push_back("-fconstexpr-steps");
4396  CmdArgs.push_back(A->getValue());
4397  }
4398 
4399  if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
4400  CmdArgs.push_back("-fbracket-depth");
4401  CmdArgs.push_back(A->getValue());
4402  }
4403 
4404  if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
4405  options::OPT_Wlarge_by_value_copy_def)) {
4406  if (A->getNumValues()) {
4407  StringRef bytes = A->getValue();
4408  CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
4409  } else
4410  CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
4411  }
4412 
4413  if (Args.hasArg(options::OPT_relocatable_pch))
4414  CmdArgs.push_back("-relocatable-pch");
4415 
4416  if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
4417  static const char *kCFABIs[] = {
4418  "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
4419  };
4420 
4421  if (find(kCFABIs, StringRef(A->getValue())) == std::end(kCFABIs))
4422  D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
4423  else
4424  A->render(Args, CmdArgs);
4425  }
4426 
4427  if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
4428  CmdArgs.push_back("-fconstant-string-class");
4429  CmdArgs.push_back(A->getValue());
4430  }
4431 
4432  if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
4433  CmdArgs.push_back("-ftabstop");
4434  CmdArgs.push_back(A->getValue());
4435  }
4436 
4437  if (Args.hasFlag(options::OPT_fstack_size_section,
4438  options::OPT_fno_stack_size_section, RawTriple.isPS4()))
4439  CmdArgs.push_back("-fstack-size-section");
4440 
4441  CmdArgs.push_back("-ferror-limit");
4442  if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
4443  CmdArgs.push_back(A->getValue());
4444  else
4445  CmdArgs.push_back("19");
4446 
4447  if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
4448  CmdArgs.push_back("-fmacro-backtrace-limit");
4449  CmdArgs.push_back(A->getValue());
4450  }
4451 
4452  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
4453  CmdArgs.push_back("-ftemplate-backtrace-limit");
4454  CmdArgs.push_back(A->getValue());
4455  }
4456 
4457  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
4458  CmdArgs.push_back("-fconstexpr-backtrace-limit");
4459  CmdArgs.push_back(A->getValue());
4460  }
4461 
4462  if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
4463  CmdArgs.push_back("-fspell-checking-limit");
4464  CmdArgs.push_back(A->getValue());
4465  }
4466 
4467  // Pass -fmessage-length=.
4468  CmdArgs.push_back("-fmessage-length");
4469  if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
4470  CmdArgs.push_back(A->getValue());
4471  } else {
4472  // If -fmessage-length=N was not specified, determine whether this is a
4473  // terminal and, if so, implicitly define -fmessage-length appropriately.
4474  unsigned N = llvm::sys::Process::StandardErrColumns();
4475  CmdArgs.push_back(Args.MakeArgString(Twine(N)));
4476  }
4477 
4478  // -fvisibility= and -fvisibility-ms-compat are of a piece.
4479  if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
4480  options::OPT_fvisibility_ms_compat)) {
4481  if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
4482  CmdArgs.push_back("-fvisibility");
4483  CmdArgs.push_back(A->getValue());
4484  } else {
4485  assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
4486  CmdArgs.push_back("-fvisibility");
4487  CmdArgs.push_back("hidden");
4488  CmdArgs.push_back("-ftype-visibility");
4489  CmdArgs.push_back("default");
4490  }
4491  }
4492 
4493  Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
4494  Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
4495 
4496  Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
4497 
4498  // Forward -f (flag) options which we can pass directly.
4499  Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
4500  Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
4501  Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
4502  Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
4503  Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
4504  options::OPT_fno_emulated_tls);
4505  Args.AddLastArg(CmdArgs, options::OPT_fkeep_static_consts);
4506 
4507  // AltiVec-like language extensions aren't relevant for assembling.
4508  if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
4509  Args.AddLastArg(CmdArgs, options::OPT_fzvector);
4510 
4511  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
4512  Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
4513 
4514  // Forward flags for OpenMP. We don't do this if the current action is an
4515  // device offloading action other than OpenMP.
4516  if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
4517  options::OPT_fno_openmp, false) &&
4520  switch (D.getOpenMPRuntime(Args)) {
4521  case Driver::OMPRT_OMP:
4522  case Driver::OMPRT_IOMP5:
4523  // Clang can generate useful OpenMP code for these two runtime libraries.
4524  CmdArgs.push_back("-fopenmp");
4525 
4526  // If no option regarding the use of TLS in OpenMP codegeneration is
4527  // given, decide a default based on the target. Otherwise rely on the
4528  // options and pass the right information to the frontend.
4529  if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
4530  options::OPT_fnoopenmp_use_tls, /*Default=*/true))
4531  CmdArgs.push_back("-fnoopenmp-use-tls");
4532  Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4533  options::OPT_fno_openmp_simd);
4534  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4535  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
4536  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
4537  Args.AddAllArgs(CmdArgs,
4538  options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
4539  if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
4540  options::OPT_fno_openmp_optimistic_collapse,
4541  /*Default=*/false))
4542  CmdArgs.push_back("-fopenmp-optimistic-collapse");
4543 
4544  // When in OpenMP offloading mode with NVPTX target, forward
4545  // cuda-mode flag
4546  if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
4547  options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
4548  CmdArgs.push_back("-fopenmp-cuda-mode");
4549 
4550  // When in OpenMP offloading mode with NVPTX target, check if full runtime
4551  // is required.
4552  if (Args.hasFlag(options::OPT_fopenmp_cuda_force_full_runtime,
4553  options::OPT_fno_openmp_cuda_force_full_runtime,
4554  /*Default=*/false))
4555  CmdArgs.push_back("-fopenmp-cuda-force-full-runtime");
4556  break;
4557  default:
4558  // By default, if Clang doesn't know how to generate useful OpenMP code
4559  // for a specific runtime library, we just don't pass the '-fopenmp' flag
4560  // down to the actual compilation.
4561  // FIXME: It would be better to have a mode which *only* omits IR
4562  // generation based on the OpenMP support so that we get consistent
4563  // semantic analysis, etc.
4564  break;
4565  }
4566  } else {
4567  Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4568  options::OPT_fno_openmp_simd);
4569  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4570  }
4571 
4572  const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
4573  Sanitize.addArgs(TC, Args, CmdArgs, InputType);
4574 
4575  const XRayArgs &XRay = TC.getXRayArgs();
4576  XRay.addArgs(TC, Args, CmdArgs, InputType);
4577 
4578  if (TC.SupportsProfiling())
4579  Args.AddLastArg(CmdArgs, options::OPT_pg);
4580 
4581  if (TC.SupportsProfiling())
4582  Args.AddLastArg(CmdArgs, options::OPT_mfentry);
4583 
4584  // -flax-vector-conversions is default.
4585  if (!Args.hasFlag(options::OPT_flax_vector_conversions,
4586  options::OPT_fno_lax_vector_conversions))
4587  CmdArgs.push_back("-fno-lax-vector-conversions");
4588 
4589  if (Args.getLastArg(options::OPT_fapple_kext) ||
4590  (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
4591  CmdArgs.push_back("-fapple-kext");
4592 
4593  Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
4594  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
4595  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
4596  Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
4597  Args.AddLastArg(CmdArgs, options::OPT_ftime_trace);
4598  Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
4599  Args.AddLastArg(CmdArgs, options::OPT_malign_double);
4600 
4601  if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
4602  CmdArgs.push_back("-ftrapv-handler");
4603  CmdArgs.push_back(A->getValue());
4604  }
4605 
4606  Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
4607 
4608  // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
4609  // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
4610  if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
4611  if (A->getOption().matches(options::OPT_fwrapv))
4612  CmdArgs.push_back("-fwrapv");
4613  } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
4614  options::OPT_fno_strict_overflow)) {
4615  if (A->getOption().matches(options::OPT_fno_strict_overflow))
4616  CmdArgs.push_back("-fwrapv");
4617  }
4618 
4619  if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
4620  options::OPT_fno_reroll_loops))
4621  if (A->getOption().matches(options::OPT_freroll_loops))
4622  CmdArgs.push_back("-freroll-loops");
4623 
4624  Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
4625  Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
4626  options::OPT_fno_unroll_loops);
4627 
4628  Args.AddLastArg(CmdArgs, options::OPT_pthread);
4629 
4630  if (Args.hasFlag(options::OPT_mspeculative_load_hardening, options::OPT_mno_speculative_load_hardening,
4631  false))
4632  CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening"));
4633 
4634  RenderSSPOptions(TC, Args, CmdArgs, KernelOrKext);
4635  RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
4636 
4637  // Translate -mstackrealign
4638  if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
4639  false))
4640  CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
4641 
4642  if (Args.hasArg(options::OPT_mstack_alignment)) {
4643  StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
4644  CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
4645  }
4646 
4647  if (Args.hasArg(options::OPT_mstack_probe_size)) {
4648  StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
4649 
4650  if (!Size.empty())
4651  CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
4652  else
4653  CmdArgs.push_back("-mstack-probe-size=0");
4654  }
4655 
4656  if (!Args.hasFlag(options::OPT_mstack_arg_probe,
4657  options::OPT_mno_stack_arg_probe, true))
4658  CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
4659 
4660  if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
4661  options::OPT_mno_restrict_it)) {
4662  if (A->getOption().matches(options::OPT_mrestrict_it)) {
4663  CmdArgs.push_back("-mllvm");
4664  CmdArgs.push_back("-arm-restrict-it");
4665  } else {
4666  CmdArgs.push_back("-mllvm");
4667  CmdArgs.push_back("-arm-no-restrict-it");
4668  }
4669  } else if (Triple.isOSWindows() &&
4670  (Triple.getArch() == llvm::Triple::arm ||
4671  Triple.getArch() == llvm::Triple::thumb)) {
4672  // Windows on ARM expects restricted IT blocks
4673  CmdArgs.push_back("-mllvm");
4674  CmdArgs.push_back("-arm-restrict-it");
4675  }
4676 
4677  // Forward -cl options to -cc1
4678  RenderOpenCLOptions(Args, CmdArgs);
4679 
4680  if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
4681  CmdArgs.push_back(
4682  Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
4683  }
4684 
4685  // Forward -f options with positive and negative forms; we translate
4686  // these by hand.
4687  if (Arg *A = getLastProfileSampleUseArg(Args)) {
4688  auto *PGOArg = Args.getLastArg(
4689  options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,
4690  options::OPT_fcs_profile_generate, options::OPT_fcs_profile_generate_EQ,
4691  options::OPT_fprofile_use, options::OPT_fprofile_use_EQ);
4692  if (PGOArg)
4693  D.Diag(diag::err_drv_argument_not_allowed_with)
4694  << "SampleUse with PGO options";
4695 
4696  StringRef fname = A->getValue();
4697  if (!llvm::sys::fs::exists(fname))
4698  D.Diag(diag::err_drv_no_such_file) << fname;
4699  else
4700  A->render(Args, CmdArgs);
4701  }
4702  Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
4703 
4704  RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
4705 
4706  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4707  options::OPT_fno_assume_sane_operator_new))
4708  CmdArgs.push_back("-fno-assume-sane-operator-new");
4709 
4710  // -fblocks=0 is default.
4711  if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4712  TC.IsBlocksDefault()) ||
4713  (Args.hasArg(options::OPT_fgnu_runtime) &&
4714  Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4715  !Args.hasArg(options::OPT_fno_blocks))) {
4716  CmdArgs.push_back("-fblocks");
4717 
4718  if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
4719  CmdArgs.push_back("-fblocks-runtime-optional");
4720  }
4721 
4722  // -fencode-extended-block-signature=1 is default.
4723  if (TC.IsEncodeExtendedBlockSignatureDefault())
4724  CmdArgs.push_back("-fencode-extended-block-signature");
4725 
4726  if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4727  false) &&
4728  types::isCXX(InputType)) {
4729  CmdArgs.push_back("-fcoroutines-ts");
4730  }
4731 
4732  Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4733  options::OPT_fno_double_square_bracket_attributes);
4734 
4735  // -faccess-control is default.
4736  if (Args.hasFlag(options::OPT_fno_access_control,
4737  options::OPT_faccess_control, false))
4738  CmdArgs.push_back("-fno-access-control");
4739 
4740  // -felide-constructors is the default.
4741  if (Args.hasFlag(options::OPT_fno_elide_constructors,
4742  options::OPT_felide_constructors, false))
4743  CmdArgs.push_back("-fno-elide-constructors");
4744 
4745  ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
4746 
4747  if (KernelOrKext || (types::isCXX(InputType) &&
4748  (RTTIMode == ToolChain::RM_Disabled)))
4749  CmdArgs.push_back("-fno-rtti");
4750 
4751  // -fshort-enums=0 is default for all architectures except Hexagon.
4752  if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4753  TC.getArch() == llvm::Triple::hexagon))
4754  CmdArgs.push_back("-fshort-enums");
4755 
4756  RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4757 
4758  // -fuse-cxa-atexit is default.
4759  if (!Args.hasFlag(
4760  options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4761  !RawTriple.isOSWindows() &&
4762  TC.getArch() != llvm::Triple::xcore &&
4763  ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4764  RawTriple.hasEnvironment())) ||
4765  KernelOrKext)
4766  CmdArgs.push_back("-fno-use-cxa-atexit");
4767 
4768  if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
4769  options::OPT_fno_register_global_dtors_with_atexit,
4770  RawTriple.isOSDarwin() && !KernelOrKext))
4771  CmdArgs.push_back("-fregister-global-dtors-with-atexit");
4772 
4773  // -fms-extensions=0 is default.
4774  if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4775  IsWindowsMSVC))
4776  CmdArgs.push_back("-fms-extensions");
4777 
4778  // -fno-use-line-directives is default.
4779  if (Args.hasFlag(options::OPT_fuse_line_directives,
4780  options::OPT_fno_use_line_directives, false))
4781  CmdArgs.push_back("-fuse-line-directives");
4782 
4783  // -fms-compatibility=0 is default.
4784  if (Args.hasFlag(options::OPT_fms_compatibility,
4785  options::OPT_fno_ms_compatibility,
4786  (IsWindowsMSVC &&
4787  Args.hasFlag(options::OPT_fms_extensions,
4788  options::OPT_fno_ms_extensions, true))))
4789  CmdArgs.push_back("-fms-compatibility");
4790 
4791  VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
4792  if (!MSVT.empty())
4793  CmdArgs.push_back(
4794  Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4795 
4796  bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4797  if (ImplyVCPPCXXVer) {
4798  StringRef LanguageStandard;
4799  if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4800  Std = StdArg;
4801  LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4802  .Case("c++14", "-std=c++14")
4803  .Case("c++17", "-std=c++17")
4804  .Case("c++latest", "-std=c++2a")
4805  .Default("");
4806  if (LanguageStandard.empty())
4807  D.Diag(clang::diag::warn_drv_unused_argument)
4808  << StdArg->getAsString(Args);
4809  }
4810 
4811  if (LanguageStandard.empty()) {
4812  if (IsMSVC2015Compatible)
4813  LanguageStandard = "-std=c++14";
4814  else
4815  LanguageStandard = "-std=c++11";
4816  }
4817 
4818  CmdArgs.push_back(LanguageStandard.data());
4819  }
4820 
4821  // -fno-borland-extensions is default.
4822  if (Args.hasFlag(options::OPT_fborland_extensions,
4823  options::OPT_fno_borland_extensions, false))
4824  CmdArgs.push_back("-fborland-extensions");
4825 
4826  // -fno-declspec is default, except for PS4.
4827  if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4828  RawTriple.isPS4()))
4829  CmdArgs.push_back("-fdeclspec");
4830  else if (Args.hasArg(options::OPT_fno_declspec))
4831  CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4832 
4833  // -fthreadsafe-static is default, except for MSVC compatibility versions less
4834  // than 19.
4835  if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4836  options::OPT_fno_threadsafe_statics,
4837  !IsWindowsMSVC || IsMSVC2015Compatible))
4838  CmdArgs.push_back("-fno-threadsafe-statics");
4839 
4840  // -fno-delayed-template-parsing is default, except when targeting MSVC.
4841  // Many old Windows SDK versions require this to parse.
4842  // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4843  // compiler. We should be able to disable this by default at some point.
4844  if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4845  options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4846  CmdArgs.push_back("-fdelayed-template-parsing");
4847 
4848  // -fgnu-keywords default varies depending on language; only pass if
4849  // specified.
4850  Args.AddLastArg(CmdArgs, options::OPT_fgnu_keywords,
4851  options::OPT_fno_gnu_keywords);
4852 
4853  if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4854  false))
4855  CmdArgs.push_back("-fgnu89-inline");
4856 
4857  if (Args.hasArg(options::OPT_fno_inline))
4858  CmdArgs.push_back("-fno-inline");
4859 
4860  Args.AddLastArg(CmdArgs, options::OPT_finline_functions,
4861  options::OPT_finline_hint_functions,
4862  options::OPT_fno_inline_functions);
4863 
4864  // FIXME: Find a better way to determine whether the language has modules
4865  // support by default, or just assume that all languages do.
4866  bool HaveModules =
4867  Std && (Std->containsValue("c++2a") || Std->containsValue("c++latest"));
4868  RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4869 
4870  Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4871  options::OPT_fno_experimental_new_pass_manager);
4872 
4873  ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4874  RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
4875  Input, CmdArgs);
4876 
4877  if (Args.hasFlag(options::OPT_fapplication_extension,
4878  options::OPT_fno_application_extension, false))
4879  CmdArgs.push_back("-fapplication-extension");
4880 
4881  // Handle GCC-style exception args.
4882  if (!C.getDriver().IsCLMode())
4883  addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
4884 
4885  // Handle exception personalities
4886  Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
4887  options::OPT_fseh_exceptions,
4888  options::OPT_fdwarf_exceptions);
4889  if (A) {
4890  const Option &Opt = A->getOption();
4891  if (Opt.matches(options::OPT_fsjlj_exceptions))
4892  CmdArgs.push_back("-fsjlj-exceptions");
4893  if (Opt.matches(options::OPT_fseh_exceptions))
4894  CmdArgs.push_back("-fseh-exceptions");
4895  if (Opt.matches(options::OPT_fdwarf_exceptions))
4896  CmdArgs.push_back("-fdwarf-exceptions");
4897  } else {
4898  switch (TC.GetExceptionModel(Args)) {
4899  default:
4900  break;
4901  case llvm::ExceptionHandling::DwarfCFI:
4902  CmdArgs.push_back("-fdwarf-exceptions");
4903  break;
4904  case llvm::ExceptionHandling::SjLj:
4905  CmdArgs.push_back("-fsjlj-exceptions");
4906  break;
4907  case llvm::ExceptionHandling::WinEH:
4908  CmdArgs.push_back("-fseh-exceptions");
4909  break;
4910  }
4911  }
4912 
4913  // C++ "sane" operator new.
4914  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4915  options::OPT_fno_assume_sane_operator_new))
4916  CmdArgs.push_back("-fno-assume-sane-operator-new");
4917 
4918  // -frelaxed-template-template-args is off by default, as it is a severe
4919  // breaking change until a corresponding change to template partial ordering
4920  // is provided.
4921  if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4922  options::OPT_fno_relaxed_template_template_args, false))
4923  CmdArgs.push_back("-frelaxed-template-template-args");
4924 
4925  // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4926  // most platforms.
4927  if (Args.hasFlag(options::OPT_fsized_deallocation,
4928  options::OPT_fno_sized_deallocation, false))
4929  CmdArgs.push_back("-fsized-deallocation");
4930 
4931  // -faligned-allocation is on by default in C++17 onwards and otherwise off
4932  // by default.
4933  if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4934  options::OPT_fno_aligned_allocation,
4935  options::OPT_faligned_new_EQ)) {
4936  if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4937  CmdArgs.push_back("-fno-aligned-allocation");
4938  else
4939  CmdArgs.push_back("-faligned-allocation");
4940  }
4941 
4942  // The default new alignment can be specified using a dedicated option or via
4943  // a GCC-compatible option that also turns on aligned allocation.
4944  if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4945  options::OPT_faligned_new_EQ))
4946  CmdArgs.push_back(
4947  Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4948 
4949  // -fconstant-cfstrings is default, and may be subject to argument translation
4950  // on Darwin.
4951  if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4952  options::OPT_fno_constant_cfstrings) ||
4953  !Args.hasFlag(options::OPT_mconstant_cfstrings,
4954  options::OPT_mno_constant_cfstrings))
4955  CmdArgs.push_back("-fno-constant-cfstrings");
4956 
4957  // -fno-pascal-strings is default, only pass non-default.
4958  if (Args.hasFlag(options::OPT_fpascal_strings,
4959  options::OPT_fno_pascal_strings, false))
4960  CmdArgs.push_back("-fpascal-strings");
4961 
4962  // Honor -fpack-struct= and -fpack-struct, if given. Note that
4963  // -fno-pack-struct doesn't apply to -fpack-struct=.
4964  if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4965  std::string PackStructStr = "-fpack-struct=";
4966  PackStructStr += A->getValue();
4967  CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4968  } else if (Args.hasFlag(options::OPT_fpack_struct,
4969  options::OPT_fno_pack_struct, false)) {
4970  CmdArgs.push_back("-fpack-struct=1");
4971  }
4972 
4973  // Handle -fmax-type-align=N and -fno-type-align
4974  bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
4975  if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
4976  if (!SkipMaxTypeAlign) {
4977  std::string MaxTypeAlignStr = "-fmax-type-align=";
4978  MaxTypeAlignStr += A->getValue();
4979  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4980  }
4981  } else if (RawTriple.isOSDarwin()) {
4982  if (!SkipMaxTypeAlign) {
4983  std::string MaxTypeAlignStr = "-fmax-type-align=16";
4984  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
4985  }
4986  }
4987 
4988  if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
4989  CmdArgs.push_back("-Qn");
4990 
4991  // -fcommon is the default unless compiling kernel code or the target says so
4992  bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
4993  if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
4994  !NoCommonDefault))
4995  CmdArgs.push_back("-fno-common");
4996 
4997  // -fsigned-bitfields is default, and clang doesn't yet support
4998  // -funsigned-bitfields.
4999  if (!Args.hasFlag(options::OPT_fsigned_bitfields,
5000  options::OPT_funsigned_bitfields))
5001  D.Diag(diag::warn_drv_clang_unsupported)
5002  << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
5003 
5004  // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
5005  if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
5006  D.Diag(diag::err_drv_clang_unsupported)
5007  << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
5008 
5009  // -finput_charset=UTF-8 is default. Reject others
5010  if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
5011  StringRef value = inputCharset->getValue();
5012  if (!value.equals_lower("utf-8"))
5013  D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
5014  << value;
5015  }
5016 
5017  // -fexec_charset=UTF-8 is default. Reject others
5018  if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
5019  StringRef value = execCharset->getValue();
5020  if (!value.equals_lower("utf-8"))
5021  D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
5022  << value;
5023  }
5024 
5025  RenderDiagnosticsOptions(D, Args, CmdArgs);
5026 
5027  // -fno-asm-blocks is default.
5028  if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
5029  false))
5030  CmdArgs.push_back("-fasm-blocks");
5031 
5032  // -fgnu-inline-asm is default.
5033  if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
5034  options::OPT_fno_gnu_inline_asm, true))
5035  CmdArgs.push_back("-fno-gnu-inline-asm");
5036 
5037  // Enable vectorization per default according to the optimization level
5038  // selected. For optimization levels that want vectorization we use the alias
5039  // option to simplify the hasFlag logic.
5040  bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
5041  OptSpecifier VectorizeAliasOption =
5042  EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
5043  if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
5044  options::OPT_fno_vectorize, EnableVec))
5045  CmdArgs.push_back("-vectorize-loops");
5046 
5047  // -fslp-vectorize is enabled based on the optimization level selected.
5048  bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
5049  OptSpecifier SLPVectAliasOption =
5050  EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
5051  if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
5052  options::OPT_fno_slp_vectorize, EnableSLPVec))
5053  CmdArgs.push_back("-vectorize-slp");
5054 
5055  ParseMPreferVectorWidth(D, Args, CmdArgs);
5056 
5057  Args.AddLastArg(CmdArgs, options::OPT_fshow_overloads_EQ);
5058  Args.AddLastArg(CmdArgs,
5059  options::OPT_fsanitize_undefined_strip_path_components_EQ);
5060 
5061  // -fdollars-in-identifiers default varies depending on platform and
5062  // language; only pass if specified.
5063  if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
5064  options::OPT_fno_dollars_in_identifiers)) {
5065  if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
5066  CmdArgs.push_back("-fdollars-in-identifiers");
5067  else
5068  CmdArgs.push_back("-fno-dollars-in-identifiers");
5069  }
5070 
5071  // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
5072  // practical purposes.
5073  if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
5074  options::OPT_fno_unit_at_a_time)) {
5075  if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
5076  D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
5077  }
5078 
5079  if (Args.hasFlag(options::OPT_fapple_pragma_pack,
5080  options::OPT_fno_apple_pragma_pack, false))
5081  CmdArgs.push_back("-fapple-pragma-pack");
5082 
5083  // Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
5084  if (Args.hasFlag(options::OPT_fsave_optimization_record,
5085  options::OPT_foptimization_record_file_EQ,
5086  options::OPT_fno_save_optimization_record, false) ||
5087  Args.hasFlag(options::OPT_fsave_optimization_record_EQ,
5088  options::OPT_fno_save_optimization_record, false) ||
5089  Args.hasFlag(options::OPT_foptimization_record_passes_EQ,
5090  options::OPT_fno_save_optimization_record, false)) {
5091  CmdArgs.push_back("-opt-record-file");
5092 
5093  const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
5094  if (A) {
5095  CmdArgs.push_back(A->getValue());
5096  } else {
5097  SmallString<128> F;
5098 
5099  if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
5100  if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
5101  F = FinalOutput->getValue();
5102  }
5103 
5104  if (F.empty()) {
5105  // Use the input filename.
5106  F = llvm::sys::path::stem(Input.getBaseInput());
5107 
5108  // If we're compiling for an offload architecture (i.e. a CUDA device),
5109  // we need to make the file name for the device compilation different
5110  // from the host compilation.
5113  llvm::sys::path::replace_extension(F, "");
5115  Triple.normalize());
5116  F += "-";
5117  F += JA.getOffloadingArch();
5118  }
5119  }
5120 
5121  std::string Extension = "opt.";
5122  if (const Arg *A =
5123  Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
5124  Extension += A->getValue();
5125  else
5126  Extension += "yaml";
5127 
5128  llvm::sys::path::replace_extension(F, Extension);
5129  CmdArgs.push_back(Args.MakeArgString(F));
5130  }
5131 
5132  if (const Arg *A =
5133  Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
5134  CmdArgs.push_back("-opt-record-passes");
5135  CmdArgs.push_back(A->getValue());
5136  }
5137 
5138  if (const Arg *A =
5139  Args.getLastArg(options::OPT_fsave_optimization_record_EQ)) {
5140  CmdArgs.push_back("-opt-record-format");
5141  CmdArgs.push_back(A->getValue());
5142  }
5143  }
5144 
5145  bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
5146  options::OPT_fno_rewrite_imports, false);
5147  if (RewriteImports)
5148  CmdArgs.push_back("-frewrite-imports");
5149 
5150  // Enable rewrite includes if the user's asked for it or if we're generating
5151  // diagnostics.
5152  // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
5153  // nice to enable this when doing a crashdump for modules as well.
5154  if (Args.hasFlag(options::OPT_frewrite_includes,
5155  options::OPT_fno_rewrite_includes, false) ||
5156  (C.isForDiagnostics() && !HaveModules))
5157  CmdArgs.push_back("-frewrite-includes");
5158 
5159  // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
5160  if (Arg *A = Args.getLastArg(options::OPT_traditional,
5161  options::OPT_traditional_cpp)) {
5162  if (isa<PreprocessJobAction>(JA))
5163  CmdArgs.push_back("-traditional-cpp");
5164  else
5165  D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
5166  }
5167 
5168  Args.AddLastArg(CmdArgs, options::OPT_dM);
5169  Args.AddLastArg(CmdArgs, options::OPT_dD);
5170 
5171  // Handle serialized diagnostics.
5172  if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
5173  CmdArgs.push_back("-serialize-diagnostic-file");
5174  CmdArgs.push_back(Args.MakeArgString(A->getValue()));
5175  }
5176 
5177  if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
5178  CmdArgs.push_back("-fretain-comments-from-system-headers");
5179 
5180  // Forward -fcomment-block-commands to -cc1.
5181  Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
5182  // Forward -fparse-all-comments to -cc1.
5183  Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
5184 
5185  // Turn -fplugin=name.so into -load name.so
5186  for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
5187  CmdArgs.push_back("-load");
5188  CmdArgs.push_back(A->getValue());
5189  A->claim();
5190  }
5191 
5192  // Forward -fpass-plugin=name.so to -cc1.
5193  for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {
5194  CmdArgs.push_back(
5195  Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));
5196  A->claim();
5197  }
5198 
5199  // Setup statistics file output.
5200  SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
5201  if (!StatsFile.empty())
5202  CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
5203 
5204  // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
5205  // parser.
5206  // -finclude-default-header flag is for preprocessor,
5207  // do not pass it to other cc1 commands when save-temps is enabled
5208  if (C.getDriver().isSaveTempsEnabled() &&
5209  !isa<PreprocessJobAction>(JA)) {
5210  for (auto Arg : Args.filtered(options::OPT_Xclang)) {
5211  Arg->claim();
5212  if (StringRef(Arg->getValue()) != "-finclude-default-header")
5213  CmdArgs.push_back(Arg->getValue());
5214  }
5215  }
5216  else {
5217  Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
5218  }
5219  for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
5220  A->claim();
5221 
5222  // We translate this by hand to the -cc1 argument, since nightly test uses
5223  // it and developers have been trained to spell it with -mllvm. Both
5224  // spellings are now deprecated and should be removed.
5225  if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
5226  CmdArgs.push_back("-disable-llvm-optzns");
5227  } else {
5228  A->render(Args, CmdArgs);
5229  }
5230  }
5231 
5232  // With -save-temps, we want to save the unoptimized bitcode output from the
5233  // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
5234  // by the frontend.
5235  // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
5236  // has slightly different breakdown between stages.
5237  // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
5238  // pristine IR generated by the frontend. Ideally, a new compile action should
5239  // be added so both IR can be captured.
5240  if (C.getDriver().isSaveTempsEnabled() &&
5241  !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
5242  isa<CompileJobAction>(JA))
5243  CmdArgs.push_back("-disable-llvm-passes");
5244 
5245  Args.AddAllArgs(CmdArgs, options::OPT_undef);
5246 
5247  const char *Exec = D.getClangProgramPath();
5248 
5249  // Optionally embed the -cc1 level arguments into the debug info or a
5250  // section, for build analysis.
5251  // Also record command line arguments into the debug info if
5252  // -grecord-gcc-switches options is set on.
5253  // By default, -gno-record-gcc-switches is set on and no recording.
5254  auto GRecordSwitches =
5255  Args.hasFlag(options::OPT_grecord_command_line,
5256  options::OPT_gno_record_command_line, false);
5257  auto FRecordSwitches =
5258  Args.hasFlag(options::OPT_frecord_command_line,
5259  options::OPT_fno_record_command_line, false);
5260  if (FRecordSwitches && !Triple.isOSBinFormatELF())
5261  D.Diag(diag::err_drv_unsupported_opt_for_target)
5262  << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
5263  << TripleStr;
5264  if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
5265  ArgStringList OriginalArgs;
5266  for (const auto &Arg : Args)
5267  Arg->render(Args, OriginalArgs);
5268 
5269  SmallString<256> Flags;
5270  Flags += Exec;
5271  for (const char *OriginalArg : OriginalArgs) {
5272  SmallString<128> EscapedArg;
5273  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5274  Flags += " ";
5275  Flags += EscapedArg;
5276  }
5277  auto FlagsArgString = Args.MakeArgString(Flags);
5278  if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
5279  CmdArgs.push_back("-dwarf-debug-flags");
5280  CmdArgs.push_back(FlagsArgString);
5281  }
5282  if (FRecordSwitches) {
5283  CmdArgs.push_back("-record-command-line");
5284  CmdArgs.push_back(FlagsArgString);
5285  }
5286  }
5287 
5288  // Host-side cuda compilation receives all device-side outputs in a single
5289  // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
5290  if ((IsCuda || IsHIP) && CudaDeviceInput) {
5291  CmdArgs.push_back("-fcuda-include-gpubinary");
5292  CmdArgs.push_back(CudaDeviceInput->getFilename());
5293  if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
5294  CmdArgs.push_back("-fgpu-rdc");
5295  }
5296 
5297  if (IsCuda) {
5298  if (Args.hasFlag(options::OPT_fcuda_short_ptr,
5299  options::OPT_fno_cuda_short_ptr, false))
5300  CmdArgs.push_back("-fcuda-short-ptr");
5301  }
5302 
5303  // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
5304  // to specify the result of the compile phase on the host, so the meaningful
5305  // device declarations can be identified. Also, -fopenmp-is-device is passed
5306  // along to tell the frontend that it is generating code for a device, so that
5307  // only the relevant declarations are emitted.
5308  if (IsOpenMPDevice) {
5309  CmdArgs.push_back("-fopenmp-is-device");
5310  if (OpenMPDeviceInput) {
5311  CmdArgs.push_back("-fopenmp-host-ir-file-path");
5312  CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
5313  }
5314  }
5315 
5316  // For all the host OpenMP offloading compile jobs we need to pass the targets
5317  // information using -fopenmp-targets= option.
5319  SmallString<128> TargetInfo("-fopenmp-targets=");
5320 
5321  Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
5322  assert(Tgts && Tgts->getNumValues() &&
5323  "OpenMP offloading has to have targets specified.");
5324  for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
5325  if (i)
5326  TargetInfo += ',';
5327  // We need to get the string from the triple because it may be not exactly
5328  // the same as the one we get directly from the arguments.
5329  llvm::Triple T(Tgts->getValue(i));
5330  TargetInfo += T.getTriple();
5331  }
5332  CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
5333  }
5334 
5335  bool WholeProgramVTables =
5336  Args.hasFlag(options::OPT_fwhole_program_vtables,
5337  options::OPT_fno_whole_program_vtables, false);
5338  if (WholeProgramVTables) {
5339  if (!D.isUsingLTO())
5340  D.Diag(diag::err_drv_argument_only_allowed_with)
5341  << "-fwhole-program-vtables"
5342  << "-flto";
5343  CmdArgs.push_back("-fwhole-program-vtables");
5344  }
5345 
5346  bool RequiresSplitLTOUnit = WholeProgramVTables || Sanitize.needsLTO();
5347  bool SplitLTOUnit =
5348  Args.hasFlag(options::OPT_fsplit_lto_unit,
5349  options::OPT_fno_split_lto_unit, RequiresSplitLTOUnit);
5350  if (RequiresSplitLTOUnit && !SplitLTOUnit)
5351  D.Diag(diag::err_drv_argument_not_allowed_with)
5352  << "-fno-split-lto-unit"
5353  << (WholeProgramVTables ? "-fwhole-program-vtables" : "-fsanitize=cfi");
5354  if (SplitLTOUnit)
5355  CmdArgs.push_back("-fsplit-lto-unit");
5356 
5357  if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
5358  options::OPT_fno_experimental_isel)) {
5359  CmdArgs.push_back("-mllvm");
5360  if (A->getOption().matches(options::OPT_fexperimental_isel)) {
5361  CmdArgs.push_back("-global-isel=1");
5362 
5363  // GISel is on by default on AArch64 -O0, so don't bother adding
5364  // the fallback remarks for it. Other combinations will add a warning of
5365  // some kind.
5366  bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
5367  bool IsOptLevelSupported = false;
5368 
5369  Arg *A = Args.getLastArg(options::OPT_O_Group);
5370  if (Triple.getArch() == llvm::Triple::aarch64) {
5371  if (!A || A->getOption().matches(options::OPT_O0))
5372  IsOptLevelSupported = true;
5373  }
5374  if (!IsArchSupported || !IsOptLevelSupported) {
5375  CmdArgs.push_back("-mllvm");
5376  CmdArgs.push_back("-global-isel-abort=2");
5377 
5378  if (!IsArchSupported)
5379  D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
5380  else
5381  D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
5382  }
5383  } else {
5384  CmdArgs.push_back("-global-isel=0");
5385  }
5386  }
5387 
5388  if (Args.hasArg(options::OPT_forder_file_instrumentation)) {
5389  CmdArgs.push_back("-forder-file-instrumentation");
5390  // Enable order file instrumentation when ThinLTO is not on. When ThinLTO is
5391  // on, we need to pass these flags as linker flags and that will be handled
5392  // outside of the compiler.
5393  if (!D.isUsingLTO()) {
5394  CmdArgs.push_back("-mllvm");
5395  CmdArgs.push_back("-enable-order-file-instrumentation");
5396  }
5397  }
5398 
5399  if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
5400  options::OPT_fno_force_enable_int128)) {
5401  if (A->getOption().matches(options::OPT_fforce_enable_int128))
5402  CmdArgs.push_back("-fforce-enable-int128");
5403  }
5404 
5405  if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
5406  options::OPT_fno_complete_member_pointers, false))
5407  CmdArgs.push_back("-fcomplete-member-pointers");
5408 
5409  if (!Args.hasFlag(options::OPT_fcxx_static_destructors,
5410  options::OPT_fno_cxx_static_destructors, true))
5411  CmdArgs.push_back("-fno-c++-static-destructors");
5412 
5413  if (Arg *A = Args.getLastArg(options::OPT_moutline,
5414  options::OPT_mno_outline)) {
5415  if (A->getOption().matches(options::OPT_moutline)) {
5416  // We only support -moutline in AArch64 right now. If we're not compiling
5417  // for AArch64, emit a warning and ignore the flag. Otherwise, add the
5418  // proper mllvm flags.
5419  if (Triple.getArch() != llvm::Triple::aarch64) {
5420  D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
5421  } else {
5422  CmdArgs.push_back("-mllvm");
5423  CmdArgs.push_back("-enable-machine-outliner");
5424  }
5425  } else {
5426  // Disable all outlining behaviour.
5427  CmdArgs.push_back("-mllvm");
5428  CmdArgs.push_back("-enable-machine-outliner=never");
5429  }
5430  }
5431 
5432  if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
5433  (TC.getTriple().isOSBinFormatELF() ||
5434  TC.getTriple().isOSBinFormatCOFF()) &&
5435  !TC.getTriple().isPS4() &&
5436  !TC.getTriple().isOSNetBSD() &&
5437  !Distro(D.getVFS()).IsGentoo() &&
5438  !TC.getTriple().isAndroid() &&
5439  TC.useIntegratedAs()))
5440  CmdArgs.push_back("-faddrsig");
5441 
5442  if (Arg *A = Args.getLastArg(options::OPT_fsymbol_partition_EQ)) {
5443  std::string Str = A->getAsString(Args);
5444  if (!TC.getTriple().isOSBinFormatELF())
5445  D.Diag(diag::err_drv_unsupported_opt_for_target)
5446  << Str << TC.getTripleString();
5447  CmdArgs.push_back(Args.MakeArgString(Str));
5448  }
5449 
5450  // Add the "-o out -x type src.c" flags last. This is done primarily to make
5451  // the -cc1 command easier to edit when reproducing compiler crashes.
5452  if (Output.getType() == types::TY_Dependencies) {
5453  // Handled with other dependency code.
5454  } else if (Output.isFilename()) {
5455  CmdArgs.push_back("-o");
5456  CmdArgs.push_back(Output.getFilename());
5457  } else {
5458  assert(Output.isNothing() && "Invalid output.");
5459  }
5460 
5461  addDashXForInput(Args, Input, CmdArgs);
5462 
5463  ArrayRef<InputInfo> FrontendInputs = Input;
5464  if (IsHeaderModulePrecompile)
5465  FrontendInputs = ModuleHeaderInputs;
5466  else if (Input.isNothing())
5467  FrontendInputs = {};
5468 
5469  for (const InputInfo &Input : FrontendInputs) {
5470  if (Input.isFilename())
5471  CmdArgs.push_back(Input.getFilename());
5472  else
5473  Input.getInputArg().renderAsInput(Args, CmdArgs);
5474  }
5475 
5476  // Finally add the compile command to the compilation.
5477  if (Args.hasArg(options::OPT__SLASH_fallback) &&
5478  Output.getType() == types::TY_Object &&
5479  (InputType == types::TY_C || InputType == types::TY_CXX)) {
5480  auto CLCommand =
5481  getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
5482  C.addCommand(llvm::make_unique<FallbackCommand>(
5483  JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
5484  } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
5485  isa<PrecompileJobAction>(JA)) {
5486  // In /fallback builds, run the main compilation even if the pch generation
5487  // fails, so that the main compilation's fallback to cl.exe runs.
5488  C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
5489  CmdArgs, Inputs));
5490  } else {
5491  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5492  }
5493 
5494  // Make the compile command echo its inputs for /showFilenames.
5495  if (Output.getType() == types::TY_Object &&
5496  Args.hasFlag(options::OPT__SLASH_showFilenames,
5497  options::OPT__SLASH_showFilenames_, false)) {
5498  C.getJobs().getJobs().back()->setPrintInputFilenames(true);
5499  }
5500 
5501  if (Arg *A = Args.getLastArg(options::OPT_pg))
5502  if (!shouldUseFramePointer(Args, Triple))
5503  D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
5504  << A->getAsString(Args);
5505 
5506  // Claim some arguments which clang supports automatically.
5507 
5508  // -fpch-preprocess is used with gcc to add a special marker in the output to
5509  // include the PCH file.
5510  Args.ClaimAllArgs(options::OPT_fpch_preprocess);
5511 
5512  // Claim some arguments which clang doesn't support, but we don't
5513  // care to warn the user about.
5514  Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
5515  Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
5516 
5517  // Disable warnings for clang -E -emit-llvm foo.c
5518  Args.ClaimAllArgs(options::OPT_emit_llvm);
5519 }
5520 
5522  // CAUTION! The first constructor argument ("clang") is not arbitrary,
5523  // as it is for other tools. Some operations on a Tool actually test
5524  // whether that tool is Clang based on the Tool's Name as a string.
5525  : Tool("clang", "clang frontend", TC, RF_Full) {}
5526 
5528 
5529 /// Add options related to the Objective-C runtime/ABI.
5530 ///
5531 /// Returns true if the runtime is non-fragile.
5532 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
5533  ArgStringList &cmdArgs,
5534  RewriteKind rewriteKind) const {
5535  // Look for the controlling runtime option.
5536  Arg *runtimeArg =
5537  args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
5538  options::OPT_fobjc_runtime_EQ);
5539 
5540  // Just forward -fobjc-runtime= to the frontend. This supercedes
5541  // options about fragility.
5542  if (runtimeArg &&
5543  runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
5544  ObjCRuntime runtime;
5545  StringRef value = runtimeArg->getValue();
5546  if (runtime.tryParse(value)) {
5547  getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
5548  << value;
5549  }
5550  if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
5551  (runtime.getVersion() >= VersionTuple(2, 0)))
5552  if (!getToolChain().getTriple().isOSBinFormatELF() &&
5553  !getToolChain().getTriple().isOSBinFormatCOFF()) {
5555  diag::err_drv_gnustep_objc_runtime_incompatible_binary)
5556  << runtime.getVersion().getMajor();
5557  }
5558 
5559  runtimeArg->render(args, cmdArgs);
5560  return runtime;
5561  }
5562 
5563  // Otherwise, we'll need the ABI "version". Version numbers are
5564  // slightly confusing for historical reasons:
5565  // 1 - Traditional "fragile" ABI
5566  // 2 - Non-fragile ABI, version 1
5567  // 3 - Non-fragile ABI, version 2
5568  unsigned objcABIVersion = 1;
5569  // If -fobjc-abi-version= is present, use that to set the version.
5570  if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
5571  StringRef value = abiArg->getValue();
5572  if (value == "1")
5573  objcABIVersion = 1;
5574  else if (value == "2")
5575  objcABIVersion = 2;
5576  else if (value == "3")
5577  objcABIVersion = 3;
5578  else
5579  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
5580  } else {
5581  // Otherwise, determine if we are using the non-fragile ABI.
5582  bool nonFragileABIIsDefault =
5583  (rewriteKind == RK_NonFragile ||
5584  (rewriteKind == RK_None &&
5586  if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
5587  options::OPT_fno_objc_nonfragile_abi,
5588  nonFragileABIIsDefault)) {
5589 // Determine the non-fragile ABI version to use.
5590 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
5591  unsigned nonFragileABIVersion = 1;
5592 #else
5593  unsigned nonFragileABIVersion = 2;
5594 #endif
5595 
5596  if (Arg *abiArg =
5597  args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
5598  StringRef value = abiArg->getValue();
5599  if (value == "1")
5600  nonFragileABIVersion = 1;
5601  else if (value == "2")
5602  nonFragileABIVersion = 2;
5603  else
5604  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
5605  << value;
5606  }
5607 
5608  objcABIVersion = 1 + nonFragileABIVersion;
5609  } else {
5610  objcABIVersion = 1;
5611  }
5612  }
5613 
5614  // We don't actually care about the ABI version other than whether
5615  // it's non-fragile.
5616  bool isNonFragile = objcABIVersion != 1;
5617 
5618  // If we have no runtime argument, ask the toolchain for its default runtime.
5619  // However, the rewriter only really supports the Mac runtime, so assume that.
5620  ObjCRuntime runtime;
5621  if (!runtimeArg) {
5622  switch (rewriteKind) {
5623  case RK_None:
5624  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5625  break;
5626  case RK_Fragile:
5627  runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
5628  break;
5629  case RK_NonFragile:
5630  runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5631  break;
5632  }
5633 
5634  // -fnext-runtime
5635  } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
5636  // On Darwin, make this use the default behavior for the toolchain.
5637  if (getToolChain().getTriple().isOSDarwin()) {
5638  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5639 
5640  // Otherwise, build for a generic macosx port.
5641  } else {
5642  runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5643  }
5644 
5645  // -fgnu-runtime
5646  } else {
5647  assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
5648  // Legacy behaviour is to target the gnustep runtime if we are in
5649  // non-fragile mode or the GCC runtime in fragile mode.
5650  if (isNonFragile)
5651  runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
5652  else
5653  runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
5654  }
5655 
5656  cmdArgs.push_back(
5657  args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
5658  return runtime;
5659 }
5660 
5661 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
5662  bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
5663  I += HaveDash;
5664  return !HaveDash;
5665 }
5666 
5667 namespace {
5668 struct EHFlags {
5669  bool Synch = false;
5670  bool Asynch = false;
5671  bool NoUnwindC = false;
5672 };
5673 } // end anonymous namespace
5674 
5675 /// /EH controls whether to run destructor cleanups when exceptions are
5676 /// thrown. There are three modifiers:
5677 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
5678 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
5679 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
5680 /// - c: Assume that extern "C" functions are implicitly nounwind.
5681 /// The default is /EHs-c-, meaning cleanups are disabled.
5682 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
5683  EHFlags EH;
5684 
5685  std::vector<std::string> EHArgs =
5686  Args.getAllArgValues(options::OPT__SLASH_EH);
5687  for (auto EHVal : EHArgs) {
5688  for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
5689  switch (EHVal[I]) {
5690  case 'a':
5691  EH.Asynch = maybeConsumeDash(EHVal, I);
5692  if (EH.Asynch)
5693  EH.Synch = false;
5694  continue;
5695  case 'c':
5696  EH.NoUnwindC = maybeConsumeDash(EHVal, I);
5697  continue;
5698  case 's':
5699  EH.Synch = maybeConsumeDash(EHVal, I);
5700  if (EH.Synch)
5701  EH.Asynch = false;
5702  continue;
5703  default:
5704  break;
5705  }
5706  D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
5707  break;
5708  }
5709  }
5710  // The /GX, /GX- flags are only processed if there are not /EH flags.
5711  // The default is that /GX is not specified.
5712  if (EHArgs.empty() &&
5713  Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
5714  /*Default=*/false)) {
5715  EH.Synch = true;
5716  EH.NoUnwindC = true;
5717  }
5718 
5719  return EH;
5720 }
5721 
5722 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
5723  ArgStringList &CmdArgs,
5725  bool *EmitCodeView) const {
5726  unsigned RTOptionID = options::OPT__SLASH_MT;
5727 
5728  if (Args.hasArg(options::OPT__SLASH_LDd))
5729  // The /LDd option implies /MTd. The dependent lib part can be overridden,
5730  // but defining _DEBUG is sticky.
5731  RTOptionID = options::OPT__SLASH_MTd;
5732 
5733  if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
5734  RTOptionID = A->getOption().getID();
5735 
5736  StringRef FlagForCRT;
5737  switch (RTOptionID) {
5738  case options::OPT__SLASH_MD:
5739  if (Args.hasArg(options::OPT__SLASH_LDd))
5740  CmdArgs.push_back("-D_DEBUG");
5741  CmdArgs.push_back("-D_MT");
5742  CmdArgs.push_back("-D_DLL");
5743  FlagForCRT = "--dependent-lib=msvcrt";
5744  break;
5745  case options::OPT__SLASH_MDd:
5746  CmdArgs.push_back("-D_DEBUG");
5747  CmdArgs.push_back("-D_MT");
5748  CmdArgs.push_back("-D_DLL");
5749  FlagForCRT = "--dependent-lib=msvcrtd";
5750  break;
5751  case options::OPT__SLASH_MT:
5752  if (Args.hasArg(options::OPT__SLASH_LDd))
5753  CmdArgs.push_back("-D_DEBUG");
5754  CmdArgs.push_back("-D_MT");
5755  CmdArgs.push_back("-flto-visibility-public-std");
5756  FlagForCRT = "--dependent-lib=libcmt";
5757  break;
5758  case options::OPT__SLASH_MTd:
5759  CmdArgs.push_back("-D_DEBUG");
5760  CmdArgs.push_back("-D_MT");
5761  CmdArgs.push_back("-flto-visibility-public-std");
5762  FlagForCRT = "--dependent-lib=libcmtd";
5763  break;
5764  default:
5765  llvm_unreachable("Unexpected option ID.");
5766  }
5767 
5768  if (Args.hasArg(options::OPT__SLASH_Zl)) {
5769  CmdArgs.push_back("-D_VC_NODEFAULTLIB");
5770  } else {
5771  CmdArgs.push_back(FlagForCRT.data());
5772 
5773  // This provides POSIX compatibility (maps 'open' to '_open'), which most
5774  // users want. The /Za flag to cl.exe turns this off, but it's not
5775  // implemented in clang.
5776  CmdArgs.push_back("--dependent-lib=oldnames");
5777  }
5778 
5779  Args.AddLastArg(CmdArgs, options::OPT_show_includes);
5780 
5781  // This controls whether or not we emit RTTI data for polymorphic types.
5782  if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
5783  /*Default=*/false))
5784  CmdArgs.push_back("-fno-rtti-data");
5785 
5786  // This controls whether or not we emit stack-protector instrumentation.
5787  // In MSVC, Buffer Security Check (/GS) is on by default.
5788  if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
5789  /*Default=*/true)) {
5790  CmdArgs.push_back("-stack-protector");
5791  CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
5792  }
5793 
5794  // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
5795  if (Arg *DebugInfoArg =
5796  Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
5797  options::OPT_gline_tables_only)) {
5798  *EmitCodeView = true;
5799  if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
5800  *DebugInfoKind = codegenoptions::LimitedDebugInfo;
5801  else
5802  *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
5803  } else {
5804  *EmitCodeView = false;
5805  }
5806 
5807  const Driver &D = getToolChain().getDriver();
5808  EHFlags EH = parseClangCLEHFlags(D, Args);
5809  if (EH.Synch || EH.Asynch) {
5810  if (types::isCXX(InputType))
5811  CmdArgs.push_back("-fcxx-exceptions");
5812  CmdArgs.push_back("-fexceptions");
5813  }
5814  if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5815  CmdArgs.push_back("-fexternc-nounwind");
5816 
5817  // /EP should expand to -E -P.
5818  if (Args.hasArg(options::OPT__SLASH_EP)) {
5819  CmdArgs.push_back("-E");
5820  CmdArgs.push_back("-P");
5821  }
5822 
5823  unsigned VolatileOptionID;
5824  if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5825  getToolChain().getArch() == llvm::Triple::x86)
5826  VolatileOptionID = options::OPT__SLASH_volatile_ms;
5827  else
5828  VolatileOptionID = options::OPT__SLASH_volatile_iso;
5829 
5830  if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5831  VolatileOptionID = A->getOption().getID();
5832 
5833  if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5834  CmdArgs.push_back("-fms-volatile");
5835 
5836  if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
5837  options::OPT__SLASH_Zc_dllexportInlines,
5838  false)) {
5839  if (Args.hasArg(options::OPT__SLASH_fallback)) {
5840  D.Diag(clang::diag::err_drv_dllexport_inlines_and_fallback);
5841  } else {
5842  CmdArgs.push_back("-fno-dllexport-inlines");
5843  }
5844  }
5845 
5846  Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5847  Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5848  if (MostGeneralArg && BestCaseArg)
5849  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5850  << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5851 
5852  if (MostGeneralArg) {
5853  Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5854  Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5855  Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5856 
5857  Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5858  Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5859  if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5860  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5861  << FirstConflict->getAsString(Args)
5862  << SecondConflict->getAsString(Args);
5863 
5864  if (SingleArg)
5865  CmdArgs.push_back("-fms-memptr-rep=single");
5866  else if (MultipleArg)
5867  CmdArgs.push_back("-fms-memptr-rep=multiple");
5868  else
5869  CmdArgs.push_back("-fms-memptr-rep=virtual");
5870  }
5871 
5872  // Parse the default calling convention options.
5873  if (Arg *CCArg =
5874  Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5875  options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5876  options::OPT__SLASH_Gregcall)) {
5877  unsigned DCCOptId = CCArg->getOption().getID();
5878  const char *DCCFlag = nullptr;
5879  bool ArchSupported = true;
5880  llvm::Triple::ArchType Arch = getToolChain().getArch();
5881  switch (DCCOptId) {
5882  case options::OPT__SLASH_Gd:
5883  DCCFlag = "-fdefault-calling-conv=cdecl";
5884  break;
5885  case options::OPT__SLASH_Gr:
5886  ArchSupported = Arch == llvm::Triple::x86;
5887  DCCFlag = "-fdefault-calling-conv=fastcall";
5888  break;
5889  case options::OPT__SLASH_Gz:
5890  ArchSupported = Arch == llvm::Triple::x86;
5891  DCCFlag = "-fdefault-calling-conv=stdcall";
5892  break;
5893  case options::OPT__SLASH_Gv:
5894  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5895  DCCFlag = "-fdefault-calling-conv=vectorcall";
5896  break;
5897  case options::OPT__SLASH_Gregcall:
5898  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5899  DCCFlag = "-fdefault-calling-conv=regcall";
5900  break;
5901  }
5902 
5903  // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5904  if (ArchSupported && DCCFlag)
5905  CmdArgs.push_back(DCCFlag);
5906  }
5907 
5908  Args.AddLastArg(CmdArgs, options::OPT_vtordisp_mode_EQ);
5909 
5910  if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5911  CmdArgs.push_back("-fdiagnostics-format");
5912  if (Args.hasArg(options::OPT__SLASH_fallback))
5913  CmdArgs.push_back("msvc-fallback");
5914  else
5915  CmdArgs.push_back("msvc");
5916  }
5917 
5918  if (Arg *A = Args.getLastArg(options::OPT__SLASH_guard)) {
5919  SmallVector<StringRef, 1> SplitArgs;
5920  StringRef(A->getValue()).split(SplitArgs, ",");
5921  bool Instrument = false;
5922  bool NoChecks = false;
5923  for (StringRef Arg : SplitArgs) {
5924  if (Arg.equals_lower("cf"))
5925  Instrument = true;
5926  else if (Arg.equals_lower("cf-"))
5927  Instrument = false;
5928  else if (Arg.equals_lower("nochecks"))
5929  NoChecks = true;
5930  else if (Arg.equals_lower("nochecks-"))
5931  NoChecks = false;
5932  else
5933  D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << Arg;
5934  }
5935  // Currently there's no support emitting CFG instrumentation; the flag only
5936  // emits the table of address-taken functions.
5937  if (Instrument || NoChecks)
5938  CmdArgs.push_back("-cfguard");
5939  }
5940 }
5941 
5942 visualstudio::Compiler *Clang::getCLFallback() const {
5943  if (!CLFallback)
5944  CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5945  return CLFallback.get();
5946 }
5947 
5948 
5949 const char *Clang::getBaseInputName(const ArgList &Args,
5950  const InputInfo &Input) {
5951  return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
5952 }
5953 
5954 const char *Clang::getBaseInputStem(const ArgList &Args,
5955  const InputInfoList &Inputs) {
5956  const char *Str = getBaseInputName(Args, Inputs[0]);
5957 
5958  if (const char *End = strrchr(Str, '.'))
5959  return Args.MakeArgString(std::string(Str, End));
5960 
5961  return Str;
5962 }
5963 
5964 const char *Clang::getDependencyFileName(const ArgList &Args,
5965  const InputInfoList &Inputs) {
5966  // FIXME: Think about this more.
5967  std::string Res;
5968 
5969  if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
5970  std::string Str(OutputOpt->getValue());
5971  Res = Str.substr(0, Str.rfind('.'));
5972  } else {
5973  Res = getBaseInputStem(Args, Inputs);
5974  }
5975  return Args.MakeArgString(Res + ".d");
5976 }
5977 
5978 // Begin ClangAs
5979 
5980 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
5981  ArgStringList &CmdArgs) const {
5982  StringRef CPUName;
5983  StringRef ABIName;
5984  const llvm::Triple &Triple = getToolChain().getTriple();
5985  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
5986 
5987  CmdArgs.push_back("-target-abi");
5988  CmdArgs.push_back(ABIName.data());
5989 }
5990 
5991 void ClangAs::AddX86TargetArgs(const ArgList &Args,
5992  ArgStringList &CmdArgs) const {
5993  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
5994  StringRef Value = A->getValue();
5995  if (Value == "intel" || Value == "att") {
5996  CmdArgs.push_back("-mllvm");
5997  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
5998  } else {
5999  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
6000  << A->getOption().getName() << Value;
6001  }
6002  }
6003 }
6004 
6005 void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
6006  ArgStringList &CmdArgs) const {
6007  const llvm::Triple &Triple = getToolChain().getTriple();
6008  StringRef ABIName = riscv::getRISCVABI(Args, Triple);
6009 
6010  CmdArgs.push_back("-target-abi");
6011  CmdArgs.push_back(ABIName.data());
6012 }
6013 
6015  const InputInfo &Output, const InputInfoList &Inputs,
6016  const ArgList &Args,
6017  const char *LinkingOutput) const {
6018  ArgStringList CmdArgs;
6019 
6020  assert(Inputs.size() == 1 && "Unexpected number of inputs.");
6021  const InputInfo &Input = Inputs[0];
6022 
6023  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
6024  const std::string &TripleStr = Triple.getTriple();
6025  const auto &D = getToolChain().getDriver();
6026 
6027  // Don't warn about "clang -w -c foo.s"
6028  Args.ClaimAllArgs(options::OPT_w);
6029  // and "clang -emit-llvm -c foo.s"
6030  Args.ClaimAllArgs(options::OPT_emit_llvm);
6031 
6032  claimNoWarnArgs(Args);
6033 
6034  // Invoke ourselves in -cc1as mode.
6035  //
6036  // FIXME: Implement custom jobs for internal actions.
6037  CmdArgs.push_back("-cc1as");
6038 
6039  // Add the "effective" target triple.
6040  CmdArgs.push_back("-triple");
6041  CmdArgs.push_back(Args.MakeArgString(TripleStr));
6042 
6043  // Set the output mode, we currently only expect to be used as a real
6044  // assembler.
6045  CmdArgs.push_back("-filetype");
6046  CmdArgs.push_back("obj");
6047 
6048  // Set the main file name, so that debug info works even with
6049  // -save-temps or preprocessed assembly.
6050  CmdArgs.push_back("-main-file-name");
6051  CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
6052 
6053  // Add the target cpu
6054  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
6055  if (!CPU.empty()) {
6056  CmdArgs.push_back("-target-cpu");
6057  CmdArgs.push_back(Args.MakeArgString(CPU));
6058  }
6059 
6060  // Add the target features
6061  getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
6062 
6063  // Ignore explicit -force_cpusubtype_ALL option.
6064  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
6065 
6066  // Pass along any -I options so we get proper .include search paths.
6067  Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
6068 
6069  // Determine the original source input.
6070  const Action *SourceAction = &JA;
6071  while (SourceAction->getKind() != Action::InputClass) {
6072  assert(!SourceAction->getInputs().empty() && "unexpected root action!");
6073  SourceAction = SourceAction->getInputs()[0];
6074  }
6075 
6076  // Forward -g and handle debug info related flags, assuming we are dealing
6077  // with an actual assembly file.
6078  bool WantDebug = false;
6079  unsigned DwarfVersion = 0;
6080  Args.ClaimAllArgs(options::OPT_g_Group);
6081  if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
6082  WantDebug = !A->getOption().matches(options::OPT_g0) &&
6083  !A->getOption().matches(options::OPT_ggdb0);
6084  if (WantDebug)
6085  DwarfVersion = DwarfVersionNum(A->getSpelling());
6086  }
6087  if (DwarfVersion == 0)
6088  DwarfVersion = getToolChain().GetDefaultDwarfVersion();
6089 
6091 
6092  if (SourceAction->getType() == types::TY_Asm ||
6093  SourceAction->getType() == types::TY_PP_Asm) {
6094  // You might think that it would be ok to set DebugInfoKind outside of
6095  // the guard for source type, however there is a test which asserts
6096  // that some assembler invocation receives no -debug-info-kind,
6097  // and it's not clear whether that test is just overly restrictive.
6098  DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
6100  // Add the -fdebug-compilation-dir flag if needed.
6101  addDebugCompDirArg(Args, CmdArgs);
6102 
6103  addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
6104 
6105  // Set the AT_producer to the clang version when using the integrated
6106  // assembler on assembly source files.
6107  CmdArgs.push_back("-dwarf-debug-producer");
6108  CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
6109 
6110  // And pass along -I options
6111  Args.AddAllArgs(CmdArgs, options::OPT_I);
6112  }
6113  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
6114  llvm::DebuggerKind::Default);
6115  RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
6116 
6117 
6118  // Handle -fPIC et al -- the relocation-model affects the assembler
6119  // for some targets.
6120  llvm::Reloc::Model RelocationModel;
6121  unsigned PICLevel;
6122  bool IsPIE;
6123  std::tie(RelocationModel, PICLevel, IsPIE) =
6124  ParsePICArgs(getToolChain(), Args);
6125 
6126  const char *RMName = RelocationModelName(RelocationModel);
6127  if (RMName) {
6128  CmdArgs.push_back("-mrelocation-model");
6129  CmdArgs.push_back(RMName);
6130  }
6131 
6132  // Optionally embed the -cc1as level arguments into the debug info, for build
6133  // analysis.
6134  if (getToolChain().UseDwarfDebugFlags()) {
6135  ArgStringList OriginalArgs;
6136  for (const auto &Arg : Args)
6137  Arg->render(Args, OriginalArgs);
6138 
6139  SmallString<256> Flags;
6140  const char *Exec = getToolChain().getDriver().getClangProgramPath();
6141  Flags += Exec;
6142  for (const char *OriginalArg : OriginalArgs) {
6143  SmallString<128> EscapedArg;
6144  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
6145  Flags += " ";
6146  Flags += EscapedArg;
6147  }
6148  CmdArgs.push_back("-dwarf-debug-flags");
6149  CmdArgs.push_back(Args.MakeArgString(Flags));
6150  }
6151 
6152  // FIXME: Add -static support, once we have it.
6153 
6154  // Add target specific flags.
6155  switch (getToolChain().getArch()) {
6156  default:
6157  break;
6158 
6159  case llvm::Triple::mips:
6160  case llvm::Triple::mipsel:
6161  case llvm::Triple::mips64:
6162  case llvm::Triple::mips64el:
6163  AddMIPSTargetArgs(Args, CmdArgs);
6164  break;
6165 
6166  case llvm::Triple::x86:
6167  case llvm::Triple::x86_64:
6168  AddX86TargetArgs(Args, CmdArgs);
6169  break;
6170 
6171  case llvm::Triple::arm:
6172  case llvm::Triple::armeb:
6173  case llvm::Triple::thumb:
6174  case llvm::Triple::thumbeb:
6175  // This isn't in AddARMTargetArgs because we want to do this for assembly
6176  // only, not C/C++.
6177  if (Args.hasFlag(options::OPT_mdefault_build_attributes,
6178  options::OPT_mno_default_build_attributes, true)) {
6179  CmdArgs.push_back("-mllvm");
6180  CmdArgs.push_back("-arm-add-build-attributes");
6181  }
6182  break;
6183 
6184  case llvm::Triple::riscv32:
6185  case llvm::Triple::riscv64:
6186  AddRISCVTargetArgs(Args, CmdArgs);
6187  break;
6188  }
6189 
6190  // Consume all the warning flags. Usually this would be handled more
6191  // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
6192  // doesn't handle that so rather than warning about unused flags that are
6193  // actually used, we'll lie by omission instead.
6194  // FIXME: Stop lying and consume only the appropriate driver flags
6195  Args.ClaimAllArgs(options::OPT_W_Group);
6196 
6197  CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
6198  getToolChain().getDriver());
6199 
6200  Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
6201 
6202  assert(Output.isFilename() && "Unexpected lipo output.");
6203  CmdArgs.push_back("-o");
6204  CmdArgs.push_back(Output.getFilename());
6205 
6206  const llvm::Triple &T = getToolChain().getTriple();
6207  Arg *A;
6208  if (getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split &&
6209  T.isOSBinFormatELF()) {
6210  CmdArgs.push_back("-split-dwarf-output");
6211  CmdArgs.push_back(SplitDebugName(Args, Input, Output));
6212  }
6213 
6214  assert(Input.isFilename() && "Invalid input.");
6215  CmdArgs.push_back(Input.getFilename());
6216 
6217  const char *Exec = getToolChain().getDriver().getClangProgramPath();
6218  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
6219 }
6220 
6221 // Begin OffloadBundler
6222 
6224  const InputInfo &Output,
6225  const InputInfoList &Inputs,
6226  const llvm::opt::ArgList &TCArgs,
6227  const char *LinkingOutput) const {
6228  // The version with only one output is expected to refer to a bundling job.
6229  assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
6230 
6231  // The bundling command looks like this:
6232  // clang-offload-bundler -type=bc
6233  // -targets=host-triple,openmp-triple1,openmp-triple2
6234  // -outputs=input_file
6235  // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6236 
6237  ArgStringList CmdArgs;
6238 
6239  // Get the type.
6240  CmdArgs.push_back(TCArgs.MakeArgString(
6241  Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
6242 
6243  assert(JA.getInputs().size() == Inputs.size() &&
6244  "Not have inputs for all dependence actions??");
6245 
6246  // Get the targets.
6247  SmallString<128> Triples;
6248  Triples += "-targets=";
6249  for (unsigned I = 0; I < Inputs.size(); ++I) {
6250  if (I)
6251  Triples += ',';
6252 
6253  // Find ToolChain for this input.
6255  const ToolChain *CurTC = &getToolChain();
6256  const Action *CurDep = JA.getInputs()[I];
6257 
6258  if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
6259  CurTC = nullptr;
6260  OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
6261  assert(CurTC == nullptr && "Expected one dependence!");
6262  CurKind = A->getOffloadingDeviceKind();
6263  CurTC = TC;
6264  });
6265  }
6266  Triples += Action::GetOffloadKindName(CurKind);
6267  Triples += '-';
6268  Triples += CurTC->getTriple().normalize();
6269  if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
6270  Triples += '-';
6271  Triples += CurDep->getOffloadingArch();
6272  }
6273  }
6274  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6275 
6276  // Get bundled file command.
6277  CmdArgs.push_back(
6278  TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
6279 
6280  // Get unbundled files command.
6281  SmallString<128> UB;
6282  UB += "-inputs=";
6283  for (unsigned I = 0; I < Inputs.size(); ++I) {
6284  if (I)
6285  UB += ',';
6286 
6287  // Find ToolChain for this input.
6288  const ToolChain *CurTC = &getToolChain();
6289  if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
6290  CurTC = nullptr;
6291  OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
6292  assert(CurTC == nullptr && "Expected one dependence!");
6293  CurTC = TC;
6294  });
6295  }
6296  UB += CurTC->getInputFilename(Inputs[I]);
6297  }
6298  CmdArgs.push_back(TCArgs.MakeArgString(UB));
6299 
6300  // All the inputs are encoded as commands.
6301  C.addCommand(llvm::make_unique<Command>(
6302  JA, *this,
6303  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
6304  CmdArgs, None));
6305 }
6306 
6308  Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
6309  const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
6310  const char *LinkingOutput) const {
6311  // The version with multiple outputs is expected to refer to a unbundling job.
6312  auto &UA = cast<OffloadUnbundlingJobAction>(JA);
6313 
6314  // The unbundling command looks like this:
6315  // clang-offload-bundler -type=bc
6316  // -targets=host-triple,openmp-triple1,openmp-triple2
6317  // -inputs=input_file
6318  // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6319  // -unbundle
6320 
6321  ArgStringList CmdArgs;
6322 
6323  assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
6324  InputInfo Input = Inputs.front();
6325 
6326  // Get the type.
6327  CmdArgs.push_back(TCArgs.MakeArgString(
6328  Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
6329 
6330  // Get the targets.
6331  SmallString<128> Triples;
6332  Triples += "-targets=";
6333  auto DepInfo = UA.getDependentActionsInfo();
6334  for (unsigned I = 0; I < DepInfo.size(); ++I) {
6335  if (I)
6336  Triples += ',';
6337 
6338  auto &Dep = DepInfo[I];
6339  Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
6340  Triples += '-';
6341  Triples += Dep.DependentToolChain->getTriple().normalize();
6342  if (Dep.DependentOffloadKind == Action::OFK_HIP &&
6343  !Dep.DependentBoundArch.empty()) {
6344  Triples += '-';
6345  Triples += Dep.DependentBoundArch;
6346  }
6347  }
6348 
6349  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6350 
6351  // Get bundled file command.
6352  CmdArgs.push_back(
6353  TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
6354 
6355  // Get unbundled files command.
6356  SmallString<128> UB;
6357  UB += "-outputs=";
6358  for (unsigned I = 0; I < Outputs.size(); ++I) {
6359  if (I)
6360  UB += ',';
6361  UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
6362  }
6363  CmdArgs.push_back(TCArgs.MakeArgString(UB));
6364  CmdArgs.push_back("-unbundle");
6365 
6366  // All the inputs are encoded as commands.
6367  C.addCommand(llvm::make_unique<Command>(
6368  JA, *this,
6369  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
6370  CmdArgs, None));
6371 }
StringRef getSysRoot() const
Returns the sysroot path.
static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T, ArgStringList &CmdArgs)
Definition: Clang.cpp:2903
void getAArch64TargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
static const char * getBaseInputName(const llvm::opt::ArgList &Args, const InputInfo &Input)
Definition: Clang.cpp:5949
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:309
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:6307
static bool useFramePointerForTargetByDefault(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:516
OpenMPRuntimeKind getOpenMPRuntime(const llvm::opt::ArgList &Args) const
Compute the desired OpenMP runtime from the flags provided.
Definition: Driver.cpp:570
static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC)
Definition: Clang.cpp:469
std::string getClangFullVersion()
Retrieves a string representing the complete clang version, which includes the clang version number...
Definition: Version.cpp:117
virtual ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const
getDefaultObjCRuntime - Return the default Objective-C runtime for this platform. ...
Definition: ToolChain.cpp:548
unsigned CCPrintHeaders
Set CC_PRINT_HEADERS mode, which causes the frontend to log header include information to CCPrintHead...
Definition: Driver.h:192
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:54
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:414
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:352
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:530
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:821
input_range inputs()
Definition: Action.h:149
bool embedBitcodeEnabled() const
Definition: Driver.h:330
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:620
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:123
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:2057
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:533
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:108
static void QuoteTarget(StringRef Target, SmallVectorImpl< char > &Res)
Definition: Clang.cpp:94
static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args)
Definition: Clang.cpp:53
&#39;gcc&#39; is the Objective-C runtime shipped with GCC, implementing a fragile Objective-C ABI ...
Definition: ObjCRuntime.h:52
static bool shouldUseFramePointer(const ArgList &Args, const llvm::Triple &Triple)
Definition: Clang.cpp:577
static bool UseRelaxAll(Compilation &C, const ArgList &Args)
Check if -relax-all should be passed to the internal assembler.
Definition: Clang.cpp:923
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
static StringRef bytes(const std::vector< T, Allocator > &v)
Definition: ASTWriter.cpp:119
long i
Definition: xmmintrin.h:1456
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:39
const char * getFilename() const
Definition: InputInfo.h:83
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:699
Distro - Helper class for detecting and classifying Linux distributions.
Definition: Distro.h:22
bool embedBitcodeMarkerOnly() const
Definition: Driver.h:332
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:197
virtual unsigned GetDefaultStackProtectorLevel(bool KernelOrKext) const
GetDefaultStackProtectorLevel - Get the default stack protector level for this tool chain (0=off...
Definition: ToolChain.h:356
static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C, const Driver &D, const InputInfo &Output, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:727
static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D, bool OFastEnabled, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2260
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:4564
Action - Represent an abstract compilation step to perform.
Definition: Action.h:47
static const char * RelocationModelName(llvm::Reloc::Model Model)
Definition: Clang.cpp:1036
bool isNonFragile() const
Does this runtime follow the set of implied behaviors for a "non-fragile" ABI?
Definition: ObjCRuntime.h:81
bool isNeXTFamily() const
Is this runtime basically of the NeXT family of runtimes?
Definition: ObjCRuntime.h:134
std::string getTripleString() const
Definition: ToolChain.h:218
Emit location information but do not generate debug info in the output.
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
static void addDashXForInput(const ArgList &Args, const InputInfo &Input, ArgStringList &CmdArgs)
Add -x lang to CmdArgs for Input.
Definition: Clang.cpp:665
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:94
Scope - A scope is a transient data structure that is used while parsing the program.
Definition: Scope.h:40
OffloadKind getOffloadingDeviceKind() const
Definition: Action.h:196
static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, bool KernelOrKext)
Definition: Clang.cpp:2507
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:57
types::ID getType() const
Definition: InputInfo.h:77
void addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, types::ID InputType) const
Definition: XRayArgs.cpp:181
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:6223
void getAMDGPUTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
Definition: AMDGPU.cpp:38
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input, const InputInfo &Output)
static void RenderDebugInfoCompressionArgs(const ArgList &Args, ArgStringList &CmdArgs, const Driver &D, const ToolChain &TC)
Definition: Clang.cpp:1003
void AddX86TargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:5991
virtual void adjustDebugInfoKind(codegenoptions::DebugInfoKind &DebugInfoKind, const llvm::opt::ArgList &Args) const
Adjust debug information kind considering all passed options.
Definition: ToolChain.h:466
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:299
void addDirectoryList(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const char *ArgName, const char *EnvVar)
static std::tuple< StringRef, StringRef, bool > ParseAArch64BranchProtection(const Driver &D, const ArgList &Args, const Arg *A)
Definition: Clang.cpp:1509
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:42
const char * CudaVersionToString(CudaVersion V)
Definition: Cuda.cpp:10
static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2625
StringRef getRISCVABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
StringRef Filename
Definition: Format.cpp:1711
const ToolChain & getDefaultToolChain() const
Definition: Compilation.h:135
virtual bool useRelaxRelocations() const
Check whether to enable x86 relax relocations by default.
Definition: ToolChain.cpp:107
static void getDefaultModuleCachePath(SmallVectorImpl< char > &Result)
Compute the default -fmodule-cache-path.
Definition: Clang.cpp:2734
unsigned Offset
Definition: Format.cpp:1713
Exposes information about the current target.
Definition: TargetInfo.h:161
virtual bool useIntegratedAs() const
Check if the toolchain should use the integrated assembler.
Definition: ToolChain.cpp:101
static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2697
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:38
const DiagnosticsEngine & getDiags() const
Definition: Driver.h:297
bool isForDiagnostics() const
Return true if we&#39;re compiling for diagnostics.
Definition: Compilation.h:295
static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs, codegenoptions::DebugInfoKind DebugInfoKind, unsigned DwarfVersion, llvm::DebuggerKind DebuggerTuning)
Definition: Clang.cpp:955
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:304
&#39;macosx&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the non-fragile AB...
Definition: ObjCRuntime.h:34
std::string getAsString() const
Definition: ObjCRuntime.cpp:23
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:285
const llvm::Triple & getEffectiveTriple() const
Get the toolchain&#39;s effective clang triple.
Definition: ToolChain.h:223
#define V(N, I)
Definition: ASTContext.h:2907
static unsigned DwarfVersionNum(StringRef ArgValue)
Definition: Clang.cpp:946
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:48
virtual bool IsObjCNonFragileABIDefault() const
IsObjCNonFragileABIDefault - Does this tool chain set -fobjc-nonfragile-abi by default.
Definition: ToolChain.h:345
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:181
void AddRISCVTargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:6005
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:117
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
static const char * getDependencyFileName(const llvm::opt::ArgList &Args, const InputInfoList &Inputs)
Definition: Clang.cpp:5964
virtual bool isNoExecStackDefault() const
Test whether this toolchaind defaults to non-executable stacks.
Definition: ToolChain.cpp:111
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:55
virtual bool supportsDebugInfoOption(const llvm::opt::Arg *) const
Does this toolchain supports given debug info option or not.
Definition: ToolChain.h:461
do v
Definition: arm_acle.h:64
static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args)
Definition: Clang.cpp:65
const_offload_toolchains_range getOffloadToolChains() const
Definition: Compilation.h:150
static bool isSignedCharDefault(const llvm::Triple &Triple)
Definition: Clang.cpp:1323
virtual bool IsMathErrnoDefault() const
IsMathErrnoDefault - Does this tool chain use -fmath-errno by default.
Definition: ToolChain.h:337
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:209
virtual bool UseObjCMixedDispatch() const
UseObjCMixedDispatchDefault - When using non-legacy dispatch, should the mixed dispatch method be use...
Definition: ToolChain.h:349
static void RenderModulesOptions(Compilation &C, const Driver &D, const ArgList &Args, const InputInfo &Input, const InputInfo &Output, ArgStringList &CmdArgs, bool &HaveModules)
Definition: Clang.cpp:2741
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:242
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:364
bool embedBitcodeInObject() const
Definition: Driver.h:331
static bool isNoCommonDefault(const llvm::Triple &Triple)
Definition: Clang.cpp:1354
static void EscapeSpacesAndBackslashes(const char *Arg, SmallVectorImpl< char > &Res)
Definition: Clang.cpp:77
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:186
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:156
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:193
Kind getKind() const
Definition: ObjCRuntime.h:76
static bool checkDebugInfoOption(const Arg *A, const ArgList &Args, const Driver &D, const ToolChain &TC)
Definition: Clang.cpp:993
The legacy name for the LLVM OpenMP runtime from when it was the Intel OpenMP runtime.
Definition: Driver.h:104
void getMIPSTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
static DwarfFissionKind getDebugFissionKind(const Driver &D, const ArgList &Args, Arg *&Arg)
Definition: Clang.cpp:3145
bool isSaveTempsEnabled() const
Definition: Driver.h:327
llvm::opt::Arg * getLastProfileSampleUseArg(const llvm::opt::ArgList &Args)
bool isLegacyDispatchDefaultForArch(llvm::Triple::ArchType Arch)
The default dispatch mechanism to use for the specified architecture.
Definition: ObjCRuntime.h:99
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
const VersionTuple & getVersion() const
Definition: ObjCRuntime.h:77
static void appendUserToPath(SmallVectorImpl< char > &Result)
Definition: Clang.cpp:695
const llvm::opt::Arg & getInputArg() const
Definition: InputInfo.h:87
const char * getShortName() const
Definition: Tool.h:81
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:3410
Dataflow Directional Tag Classes.
const char * CCPrintHeadersFilename
The file to log CC_PRINT_HEADERS output to, if enabled.
Definition: Driver.h:162
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:2938
void AddMIPSTargetArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Clang.cpp:5980
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:434
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:27
virtual llvm::DebuggerKind getDefaultDebuggerTuning() const
Definition: ToolChain.h:456
Emit only debug directives with the line numbers data.
std::string SysRoot
sysroot, if present
Definition: Driver.h:147
void getHexagonTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
Tool - Information on a specific compilation tool.
Definition: Tool.h:33
DiagnosticOptions & getDiagnosticOptions() const
Retrieve the diagnostic options.
Definition: Diagnostic.h:500
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:190
static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:3028
virtual unsigned GetDefaultDwarfVersion() const
Definition: ToolChain.h:447
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:5682
void getMSP430TargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
std::string ClangExecutable
The original path to the clang executable.
Definition: Driver.h:122
ID getPrecompiledType(ID Id)
getPrecompiledType - Get the ID of the type for this input when it has been precompiled, or INVALID if this input is not precompiled.
Definition: Types.cpp:46
bool isCXX(ID Id)
isCXX - Is this a "C++" input (C++ and Obj-C++ sources and headers).
Definition: Types.cpp:135
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
DwarfFissionKind
Definition: Clang.cpp:3143
virtual codegenoptions::DebugInfoFormat getDefaultDebugFormat() const
Get the default debug info format. Typically, this is DWARF.
Definition: ToolChain.h:437
const Driver & getDriver() const
Definition: Compilation.h:133
const llvm::Triple & getTriple() const
Definition: ToolChain.h:195
static Optional< unsigned > getSmallDataThreshold(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:396
static bool shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime, const llvm::Triple &Triple)
Definition: Clang.cpp:394
static StringRef GetOffloadKindName(OffloadKind Kind)
Return a string containing a offload kind name.
Definition: Action.cpp:143
bool hasCompactBranches(StringRef &CPU)
Definition: Mips.cpp:413
const ToolChain & getToolChain() const
Definition: Tool.h:83
const char * CCLogDiagnosticsFilename
The file to log CC_LOG_DIAGNOSTICS output to, if enabled.
Definition: Driver.h:165
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:246
virtual bool GetDefaultStandaloneDebug() const
Definition: ToolChain.h:453
bool isNothing() const
Definition: InputInfo.h:74
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:78
static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple)
Definition: Clang.cpp:504
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
virtual LangOptions::TrivialAutoVarInitKind GetDefaultTrivialAutoVarInit() const
Get the default trivial automatic variable initialization.
Definition: ToolChain.h:362
static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs)
Add a CC1 option to specify the debug compilation directory.
Definition: Clang.cpp:606
static void ParseMRecip(const Driver &D, const ArgList &Args, ArgStringList &OutStrings)
The -mrecip flag requires processing of many optional parameters.
Definition: Clang.cpp:184
bool isFilename() const
Definition: InputInfo.h:75
Clang(const ToolChain &TC)
Definition: Clang.cpp:5521
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:763
static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec)
Vectorize at all optimization levels greater than 1 except for -Oz.
Definition: Clang.cpp:634
static bool maybeConsumeDash(const std::string &EH, size_t &I)
Definition: Clang.cpp:5661
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:232
static void RenderTrivialAutoVarInitOptions(const Driver &D, const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2555
const char * getClangProgramPath() const
Get the path to the main clang executable.
Definition: Driver.h:313
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:163
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:6014
bool CCCIsCPP() const
Whether the driver is just the preprocessor.
Definition: Driver.h:175
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:590
static const char * getBaseInputStem(const llvm::opt::ArgList &Args, const InputInfoList &Inputs)
Definition: Clang.cpp:5954
static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs, const llvm::Triple &Triple, const InputInfo &Input)
Definition: Clang.cpp:2437
static bool ContainsCompileAction(const Action *A)
Check whether the given input tree contains any compilation actions.
Definition: Clang.cpp:910
static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A)
Definition: Clang.cpp:490
static bool ShouldDisableDwarfDirectory(const ArgList &Args, const ToolChain &TC)
Definition: Clang.cpp:480
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:153
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, DwarfFissionKind &DwarfFission)
Definition: Clang.cpp:3166
const char * getOffloadingArch() const
Definition: Action.h:197
unsigned CCGenDiagnostics
Whether the driver is generating diagnostics for debugging purposes.
Definition: Driver.h:200
const list_type & getJobs() const
Definition: Job.h:191
static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs)
Definition: Clang.cpp:2599
bool isObjC(ID Id)
isObjC - Is this an "ObjC" input (Obj-C and Obj-C++ sources and headers).
Definition: Types.cpp:122
bool allowsWeak() const
Does this runtime allow the use of __weak?
Definition: ObjCRuntime.h:282
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:131