clang  10.0.0svn
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"
28 #include "clang/Basic/Version.h"
29 #include "clang/Driver/Distro.h"
31 #include "clang/Driver/Options.h"
33 #include "clang/Driver/XRayArgs.h"
34 #include "llvm/ADT/StringExtras.h"
35 #include "llvm/Config/llvm-config.h"
36 #include "llvm/Option/ArgList.h"
37 #include "llvm/Support/CodeGen.h"
38 #include "llvm/Support/Compression.h"
39 #include "llvm/Support/FileSystem.h"
40 #include "llvm/Support/Path.h"
41 #include "llvm/Support/Process.h"
42 #include "llvm/Support/TargetParser.h"
43 #include "llvm/Support/YAMLParser.h"
44 
45 #ifdef LLVM_ON_UNIX
46 #include <unistd.h> // For getuid().
47 #endif
48 
49 using namespace clang::driver;
50 using namespace clang::driver::tools;
51 using namespace clang;
52 using namespace llvm::opt;
53 
54 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
55  if (Arg *A =
56  Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) {
57  if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
58  !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
59  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
60  << A->getBaseArg().getAsString(Args)
61  << (D.IsCLMode() ? "/E, /P or /EP" : "-E");
62  }
63  }
64 }
65 
66 static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
67  // In gcc, only ARM checks this, but it seems reasonable to check universally.
68  if (Args.hasArg(options::OPT_static))
69  if (const Arg *A =
70  Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
71  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
72  << "-static";
73 }
74 
75 // Add backslashes to escape spaces and other backslashes.
76 // This is used for the space-separated argument list specified with
77 // the -dwarf-debug-flags option.
78 static void EscapeSpacesAndBackslashes(const char *Arg,
79  SmallVectorImpl<char> &Res) {
80  for (; *Arg; ++Arg) {
81  switch (*Arg) {
82  default:
83  break;
84  case ' ':
85  case '\\':
86  Res.push_back('\\');
87  break;
88  }
89  Res.push_back(*Arg);
90  }
91 }
92 
93 // Quote target names for inclusion in GNU Make dependency files.
94 // Only the characters '$', '#', ' ', '\t' are quoted.
95 static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
96  for (unsigned i = 0, e = Target.size(); i != e; ++i) {
97  switch (Target[i]) {
98  case ' ':
99  case '\t':
100  // Escape the preceding backslashes
101  for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
102  Res.push_back('\\');
103 
104  // Escape the space/tab
105  Res.push_back('\\');
106  break;
107  case '$':
108  Res.push_back('$');
109  break;
110  case '#':
111  Res.push_back('\\');
112  break;
113  default:
114  break;
115  }
116 
117  Res.push_back(Target[i]);
118  }
119 }
120 
121 /// Apply \a Work on the current tool chain \a RegularToolChain and any other
122 /// offloading tool chain that is associated with the current action \a JA.
123 static void
125  const ToolChain &RegularToolChain,
126  llvm::function_ref<void(const ToolChain &)> Work) {
127  // Apply Work on the current/regular tool chain.
128  Work(RegularToolChain);
129 
130  // Apply Work on all the offloading tool chains associated with the current
131  // action.
136  else if (JA.isHostOffloading(Action::OFK_HIP))
138  else if (JA.isDeviceOffloading(Action::OFK_HIP))
140 
143  for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
144  Work(*II->second);
145  } else if (JA.isDeviceOffloading(Action::OFK_OpenMP))
147 
148  //
149  // TODO: Add support for other offloading programming models here.
150  //
151 }
152 
153 /// This is a helper function for validating the optional refinement step
154 /// parameter in reciprocal argument strings. Return false if there is an error
155 /// parsing the refinement step. Otherwise, return true and set the Position
156 /// of the refinement step in the input string.
157 static bool getRefinementStep(StringRef In, const Driver &D,
158  const Arg &A, size_t &Position) {
159  const char RefinementStepToken = ':';
160  Position = In.find(RefinementStepToken);
161  if (Position != StringRef::npos) {
162  StringRef Option = A.getOption().getName();
163  StringRef RefStep = In.substr(Position + 1);
164  // Allow exactly one numeric character for the additional refinement
165  // step parameter. This is reasonable for all currently-supported
166  // operations and architectures because we would expect that a larger value
167  // of refinement steps would cause the estimate "optimization" to
168  // under-perform the native operation. Also, if the estimate does not
169  // converge quickly, it probably will not ever converge, so further
170  // refinement steps will not produce a better answer.
171  if (RefStep.size() != 1) {
172  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
173  return false;
174  }
175  char RefStepChar = RefStep[0];
176  if (RefStepChar < '0' || RefStepChar > '9') {
177  D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
178  return false;
179  }
180  }
181  return true;
182 }
183 
184 /// The -mrecip flag requires processing of many optional parameters.
185 static void ParseMRecip(const Driver &D, const ArgList &Args,
186  ArgStringList &OutStrings) {
187  StringRef DisabledPrefixIn = "!";
188  StringRef DisabledPrefixOut = "!";
189  StringRef EnabledPrefixOut = "";
190  StringRef Out = "-mrecip=";
191 
192  Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
193  if (!A)
194  return;
195 
196  unsigned NumOptions = A->getNumValues();
197  if (NumOptions == 0) {
198  // No option is the same as "all".
199  OutStrings.push_back(Args.MakeArgString(Out + "all"));
200  return;
201  }
202 
203  // Pass through "all", "none", or "default" with an optional refinement step.
204  if (NumOptions == 1) {
205  StringRef Val = A->getValue(0);
206  size_t RefStepLoc;
207  if (!getRefinementStep(Val, D, *A, RefStepLoc))
208  return;
209  StringRef ValBase = Val.slice(0, RefStepLoc);
210  if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
211  OutStrings.push_back(Args.MakeArgString(Out + Val));
212  return;
213  }
214  }
215 
216  // Each reciprocal type may be enabled or disabled individually.
217  // Check each input value for validity, concatenate them all back together,
218  // and pass through.
219 
220  llvm::StringMap<bool> OptionStrings;
221  OptionStrings.insert(std::make_pair("divd", false));
222  OptionStrings.insert(std::make_pair("divf", false));
223  OptionStrings.insert(std::make_pair("vec-divd", false));
224  OptionStrings.insert(std::make_pair("vec-divf", false));
225  OptionStrings.insert(std::make_pair("sqrtd", false));
226  OptionStrings.insert(std::make_pair("sqrtf", false));
227  OptionStrings.insert(std::make_pair("vec-sqrtd", false));
228  OptionStrings.insert(std::make_pair("vec-sqrtf", false));
229 
230  for (unsigned i = 0; i != NumOptions; ++i) {
231  StringRef Val = A->getValue(i);
232 
233  bool IsDisabled = Val.startswith(DisabledPrefixIn);
234  // Ignore the disablement token for string matching.
235  if (IsDisabled)
236  Val = Val.substr(1);
237 
238  size_t RefStep;
239  if (!getRefinementStep(Val, D, *A, RefStep))
240  return;
241 
242  StringRef ValBase = Val.slice(0, RefStep);
243  llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
244  if (OptionIter == OptionStrings.end()) {
245  // Try again specifying float suffix.
246  OptionIter = OptionStrings.find(ValBase.str() + 'f');
247  if (OptionIter == OptionStrings.end()) {
248  // The input name did not match any known option string.
249  D.Diag(diag::err_drv_unknown_argument) << Val;
250  return;
251  }
252  // The option was specified without a float or double suffix.
253  // Make sure that the double entry was not already specified.
254  // The float entry will be checked below.
255  if (OptionStrings[ValBase.str() + 'd']) {
256  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
257  return;
258  }
259  }
260 
261  if (OptionIter->second == true) {
262  // Duplicate option specified.
263  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
264  return;
265  }
266 
267  // Mark the matched option as found. Do not allow duplicate specifiers.
268  OptionIter->second = true;
269 
270  // If the precision was not specified, also mark the double entry as found.
271  if (ValBase.back() != 'f' && ValBase.back() != 'd')
272  OptionStrings[ValBase.str() + 'd'] = true;
273 
274  // Build the output string.
275  StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
276  Out = Args.MakeArgString(Out + Prefix + Val);
277  if (i != NumOptions - 1)
278  Out = Args.MakeArgString(Out + ",");
279  }
280 
281  OutStrings.push_back(Args.MakeArgString(Out));
282 }
283 
284 /// The -mprefer-vector-width option accepts either a positive integer
285 /// or the string "none".
286 static void ParseMPreferVectorWidth(const Driver &D, const ArgList &Args,
287  ArgStringList &CmdArgs) {
288  Arg *A = Args.getLastArg(options::OPT_mprefer_vector_width_EQ);
289  if (!A)
290  return;
291 
292  StringRef Value = A->getValue();
293  if (Value == "none") {
294  CmdArgs.push_back("-mprefer-vector-width=none");
295  } else {
296  unsigned Width;
297  if (Value.getAsInteger(10, Width)) {
298  D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
299  return;
300  }
301  CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + Value));
302  }
303 }
304 
305 static bool
307  const llvm::Triple &Triple) {
308  // We use the zero-cost exception tables for Objective-C if the non-fragile
309  // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
310  // later.
311  if (runtime.isNonFragile())
312  return true;
313 
314  if (!Triple.isMacOSX())
315  return false;
316 
317  return (!Triple.isMacOSXVersionLT(10, 5) &&
318  (Triple.getArch() == llvm::Triple::x86_64 ||
319  Triple.getArch() == llvm::Triple::arm));
320 }
321 
322 /// Adds exception related arguments to the driver command arguments. There's a
323 /// master flag, -fexceptions and also language specific flags to enable/disable
324 /// C++ and Objective-C exceptions. This makes it possible to for example
325 /// disable C++ exceptions but enable Objective-C exceptions.
326 static void addExceptionArgs(const ArgList &Args, types::ID InputType,
327  const ToolChain &TC, bool KernelOrKext,
328  const ObjCRuntime &objcRuntime,
329  ArgStringList &CmdArgs) {
330  const llvm::Triple &Triple = TC.getTriple();
331 
332  if (KernelOrKext) {
333  // -mkernel and -fapple-kext imply no exceptions, so claim exception related
334  // arguments now to avoid warnings about unused arguments.
335  Args.ClaimAllArgs(options::OPT_fexceptions);
336  Args.ClaimAllArgs(options::OPT_fno_exceptions);
337  Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
338  Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
339  Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
340  Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
341  return;
342  }
343 
344  // See if the user explicitly enabled exceptions.
345  bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
346  false);
347 
348  // Obj-C exceptions are enabled by default, regardless of -fexceptions. This
349  // is not necessarily sensible, but follows GCC.
350  if (types::isObjC(InputType) &&
351  Args.hasFlag(options::OPT_fobjc_exceptions,
352  options::OPT_fno_objc_exceptions, true)) {
353  CmdArgs.push_back("-fobjc-exceptions");
354 
355  EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
356  }
357 
358  if (types::isCXX(InputType)) {
359  // Disable C++ EH by default on XCore and PS4.
360  bool CXXExceptionsEnabled =
361  Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
362  Arg *ExceptionArg = Args.getLastArg(
363  options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
364  options::OPT_fexceptions, options::OPT_fno_exceptions);
365  if (ExceptionArg)
366  CXXExceptionsEnabled =
367  ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
368  ExceptionArg->getOption().matches(options::OPT_fexceptions);
369 
370  if (CXXExceptionsEnabled) {
371  CmdArgs.push_back("-fcxx-exceptions");
372 
373  EH = true;
374  }
375  }
376 
377  if (EH)
378  CmdArgs.push_back("-fexceptions");
379 }
380 
381 static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
382  bool Default = true;
383  if (TC.getTriple().isOSDarwin()) {
384  // The native darwin assembler doesn't support the linker_option directives,
385  // so we disable them if we think the .s file will be passed to it.
386  Default = TC.useIntegratedAs();
387  }
388  return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
389  Default);
390 }
391 
392 static bool ShouldDisableDwarfDirectory(const ArgList &Args,
393  const ToolChain &TC) {
394  bool UseDwarfDirectory =
395  Args.hasFlag(options::OPT_fdwarf_directory_asm,
396  options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
397  return !UseDwarfDirectory;
398 }
399 
400 // Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
401 // to the corresponding DebugInfoKind.
403  assert(A.getOption().matches(options::OPT_gN_Group) &&
404  "Not a -g option that specifies a debug-info level");
405  if (A.getOption().matches(options::OPT_g0) ||
406  A.getOption().matches(options::OPT_ggdb0))
408  if (A.getOption().matches(options::OPT_gline_tables_only) ||
409  A.getOption().matches(options::OPT_ggdb1))
411  if (A.getOption().matches(options::OPT_gline_directives_only))
414 }
415 
416 static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {
417  switch (Triple.getArch()){
418  default:
419  return false;
420  case llvm::Triple::arm:
421  case llvm::Triple::thumb:
422  // ARM Darwin targets require a frame pointer to be always present to aid
423  // offline debugging via backtraces.
424  return Triple.isOSDarwin();
425  }
426 }
427 
428 static bool useFramePointerForTargetByDefault(const ArgList &Args,
429  const llvm::Triple &Triple) {
430  if (Args.hasArg(options::OPT_pg))
431  return true;
432 
433  switch (Triple.getArch()) {
434  case llvm::Triple::xcore:
435  case llvm::Triple::wasm32:
436  case llvm::Triple::wasm64:
437  case llvm::Triple::msp430:
438  // XCore never wants frame pointers, regardless of OS.
439  // WebAssembly never wants frame pointers.
440  return false;
441  case llvm::Triple::ppc:
442  case llvm::Triple::ppc64:
443  case llvm::Triple::ppc64le:
444  case llvm::Triple::riscv32:
445  case llvm::Triple::riscv64:
446  return !areOptimizationsEnabled(Args);
447  default:
448  break;
449  }
450 
451  if (Triple.isOSNetBSD()) {
452  return !areOptimizationsEnabled(Args);
453  }
454 
455  if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
456  Triple.isOSHurd()) {
457  switch (Triple.getArch()) {
458  // Don't use a frame pointer on linux if optimizing for certain targets.
459  case llvm::Triple::mips64:
460  case llvm::Triple::mips64el:
461  case llvm::Triple::mips:
462  case llvm::Triple::mipsel:
463  case llvm::Triple::systemz:
464  case llvm::Triple::x86:
465  case llvm::Triple::x86_64:
466  return !areOptimizationsEnabled(Args);
467  default:
468  return true;
469  }
470  }
471 
472  if (Triple.isOSWindows()) {
473  switch (Triple.getArch()) {
474  case llvm::Triple::x86:
475  return !areOptimizationsEnabled(Args);
476  case llvm::Triple::x86_64:
477  return Triple.isOSBinFormatMachO();
478  case llvm::Triple::arm:
479  case llvm::Triple::thumb:
480  // Windows on ARM builds with FPO disabled to aid fast stack walking
481  return true;
482  default:
483  // All other supported Windows ISAs use xdata unwind information, so frame
484  // pointers are not generally useful.
485  return false;
486  }
487  }
488 
489  return true;
490 }
491 
493 getFramePointerKind(const ArgList &Args, const llvm::Triple &Triple) {
494  // We have 4 states:
495  //
496  // 00) leaf retained, non-leaf retained
497  // 01) leaf retained, non-leaf omitted (this is invalid)
498  // 10) leaf omitted, non-leaf retained
499  // (what -momit-leaf-frame-pointer was designed for)
500  // 11) leaf omitted, non-leaf omitted
501  //
502  // "omit" options taking precedence over "no-omit" options is the only way
503  // to make 3 valid states representable
504  Arg *A = Args.getLastArg(options::OPT_fomit_frame_pointer,
505  options::OPT_fno_omit_frame_pointer);
506  bool OmitFP = A && A->getOption().matches(options::OPT_fomit_frame_pointer);
507  bool NoOmitFP =
508  A && A->getOption().matches(options::OPT_fno_omit_frame_pointer);
509  bool KeepLeaf =
510  Args.hasFlag(options::OPT_momit_leaf_frame_pointer,
511  options::OPT_mno_omit_leaf_frame_pointer, Triple.isPS4CPU());
512  if (NoOmitFP || mustUseNonLeafFramePointerForTarget(Triple) ||
513  (!OmitFP && useFramePointerForTargetByDefault(Args, Triple))) {
514  if (KeepLeaf)
517  }
519 }
520 
521 /// Add a CC1 option to specify the debug compilation directory.
522 static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs,
523  const llvm::vfs::FileSystem &VFS) {
524  if (Arg *A = Args.getLastArg(options::OPT_fdebug_compilation_dir)) {
525  CmdArgs.push_back("-fdebug-compilation-dir");
526  CmdArgs.push_back(A->getValue());
527  } else if (llvm::ErrorOr<std::string> CWD =
528  VFS.getCurrentWorkingDirectory()) {
529  CmdArgs.push_back("-fdebug-compilation-dir");
530  CmdArgs.push_back(Args.MakeArgString(*CWD));
531  }
532 }
533 
534 /// Add a CC1 and CC1AS option to specify the debug file path prefix map.
535 static void addDebugPrefixMapArg(const Driver &D, const ArgList &Args, ArgStringList &CmdArgs) {
536  for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
537  StringRef Map = A->getValue();
538  if (Map.find('=') == StringRef::npos)
539  D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
540  else
541  CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
542  A->claim();
543  }
544 }
545 
546 /// Vectorize at all optimization levels greater than 1 except for -Oz.
547 /// For -Oz the loop vectorizer is disabled, while the slp vectorizer is
548 /// enabled.
549 static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
550  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
551  if (A->getOption().matches(options::OPT_O4) ||
552  A->getOption().matches(options::OPT_Ofast))
553  return true;
554 
555  if (A->getOption().matches(options::OPT_O0))
556  return false;
557 
558  assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
559 
560  // Vectorize -Os.
561  StringRef S(A->getValue());
562  if (S == "s")
563  return true;
564 
565  // Don't vectorize -Oz, unless it's the slp vectorizer.
566  if (S == "z")
567  return isSlpVec;
568 
569  unsigned OptLevel = 0;
570  if (S.getAsInteger(10, OptLevel))
571  return false;
572 
573  return OptLevel > 1;
574  }
575 
576  return false;
577 }
578 
579 /// Add -x lang to \p CmdArgs for \p Input.
580 static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
581  ArgStringList &CmdArgs) {
582  // When using -verify-pch, we don't want to provide the type
583  // 'precompiled-header' if it was inferred from the file extension
584  if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
585  return;
586 
587  CmdArgs.push_back("-x");
588  if (Args.hasArg(options::OPT_rewrite_objc))
589  CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
590  else {
591  // Map the driver type to the frontend type. This is mostly an identity
592  // mapping, except that the distinction between module interface units
593  // and other source files does not exist at the frontend layer.
594  const char *ClangType;
595  switch (Input.getType()) {
596  case types::TY_CXXModule:
597  ClangType = "c++";
598  break;
599  case types::TY_PP_CXXModule:
600  ClangType = "c++-cpp-output";
601  break;
602  default:
603  ClangType = types::getTypeName(Input.getType());
604  break;
605  }
606  CmdArgs.push_back(ClangType);
607  }
608 }
609 
611 #ifdef LLVM_ON_UNIX
612  const char *Username = getenv("LOGNAME");
613 #else
614  const char *Username = getenv("USERNAME");
615 #endif
616  if (Username) {
617  // Validate that LoginName can be used in a path, and get its length.
618  size_t Len = 0;
619  for (const char *P = Username; *P; ++P, ++Len) {
620  if (!clang::isAlphanumeric(*P) && *P != '_') {
621  Username = nullptr;
622  break;
623  }
624  }
625 
626  if (Username && Len > 0) {
627  Result.append(Username, Username + Len);
628  return;
629  }
630  }
631 
632 // Fallback to user id.
633 #ifdef LLVM_ON_UNIX
634  std::string UID = llvm::utostr(getuid());
635 #else
636  // FIXME: Windows seems to have an 'SID' that might work.
637  std::string UID = "9999";
638 #endif
639  Result.append(UID.begin(), UID.end());
640 }
641 
642 static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C,
643  const Driver &D, const InputInfo &Output,
644  const ArgList &Args,
645  ArgStringList &CmdArgs) {
646 
647  auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
648  options::OPT_fprofile_generate_EQ,
649  options::OPT_fno_profile_generate);
650  if (PGOGenerateArg &&
651  PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
652  PGOGenerateArg = nullptr;
653 
654  auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
655  options::OPT_fcs_profile_generate_EQ,
656  options::OPT_fno_profile_generate);
657  if (CSPGOGenerateArg &&
658  CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
659  CSPGOGenerateArg = nullptr;
660 
661  auto *ProfileGenerateArg = Args.getLastArg(
662  options::OPT_fprofile_instr_generate,
663  options::OPT_fprofile_instr_generate_EQ,
664  options::OPT_fno_profile_instr_generate);
665  if (ProfileGenerateArg &&
666  ProfileGenerateArg->getOption().matches(
667  options::OPT_fno_profile_instr_generate))
668  ProfileGenerateArg = nullptr;
669 
670  if (PGOGenerateArg && ProfileGenerateArg)
671  D.Diag(diag::err_drv_argument_not_allowed_with)
672  << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
673 
674  auto *ProfileUseArg = getLastProfileUseArg(Args);
675 
676  if (PGOGenerateArg && ProfileUseArg)
677  D.Diag(diag::err_drv_argument_not_allowed_with)
678  << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
679 
680  if (ProfileGenerateArg && ProfileUseArg)
681  D.Diag(diag::err_drv_argument_not_allowed_with)
682  << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
683 
684  if (CSPGOGenerateArg && PGOGenerateArg)
685  D.Diag(diag::err_drv_argument_not_allowed_with)
686  << CSPGOGenerateArg->getSpelling() << PGOGenerateArg->getSpelling();
687 
688  if (ProfileGenerateArg) {
689  if (ProfileGenerateArg->getOption().matches(
690  options::OPT_fprofile_instr_generate_EQ))
691  CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
692  ProfileGenerateArg->getValue()));
693  // The default is to use Clang Instrumentation.
694  CmdArgs.push_back("-fprofile-instrument=clang");
695  if (TC.getTriple().isWindowsMSVCEnvironment()) {
696  // Add dependent lib for clang_rt.profile
697  CmdArgs.push_back(Args.MakeArgString("--dependent-lib=" +
698  TC.getCompilerRT(Args, "profile")));
699  }
700  }
701 
702  Arg *PGOGenArg = nullptr;
703  if (PGOGenerateArg) {
704  assert(!CSPGOGenerateArg);
705  PGOGenArg = PGOGenerateArg;
706  CmdArgs.push_back("-fprofile-instrument=llvm");
707  }
708  if (CSPGOGenerateArg) {
709  assert(!PGOGenerateArg);
710  PGOGenArg = CSPGOGenerateArg;
711  CmdArgs.push_back("-fprofile-instrument=csllvm");
712  }
713  if (PGOGenArg) {
714  if (TC.getTriple().isWindowsMSVCEnvironment()) {
715  CmdArgs.push_back(Args.MakeArgString("--dependent-lib=" +
716  TC.getCompilerRT(Args, "profile")));
717  }
718  if (PGOGenArg->getOption().matches(
719  PGOGenerateArg ? options::OPT_fprofile_generate_EQ
720  : options::OPT_fcs_profile_generate_EQ)) {
721  SmallString<128> Path(PGOGenArg->getValue());
722  llvm::sys::path::append(Path, "default_%m.profraw");
723  CmdArgs.push_back(
724  Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
725  }
726  }
727 
728  if (ProfileUseArg) {
729  if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
730  CmdArgs.push_back(Args.MakeArgString(
731  Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
732  else if ((ProfileUseArg->getOption().matches(
733  options::OPT_fprofile_use_EQ) ||
734  ProfileUseArg->getOption().matches(
735  options::OPT_fprofile_instr_use))) {
736  SmallString<128> Path(
737  ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
738  if (Path.empty() || llvm::sys::fs::is_directory(Path))
739  llvm::sys::path::append(Path, "default.profdata");
740  CmdArgs.push_back(
741  Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
742  }
743  }
744 
745  bool EmitCovNotes = Args.hasArg(options::OPT_ftest_coverage) ||
746  Args.hasArg(options::OPT_coverage);
747  bool EmitCovData = Args.hasFlag(options::OPT_fprofile_arcs,
748  options::OPT_fno_profile_arcs, false) ||
749  Args.hasArg(options::OPT_coverage);
750  if (EmitCovNotes)
751  CmdArgs.push_back("-femit-coverage-notes");
752  if (EmitCovData)
753  CmdArgs.push_back("-femit-coverage-data");
754 
755  if (Args.hasFlag(options::OPT_fcoverage_mapping,
756  options::OPT_fno_coverage_mapping, false)) {
757  if (!ProfileGenerateArg)
758  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
759  << "-fcoverage-mapping"
760  << "-fprofile-instr-generate";
761 
762  CmdArgs.push_back("-fcoverage-mapping");
763  }
764 
765  if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {
766  auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
767  if (!Args.hasArg(options::OPT_coverage))
768  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
769  << "-fprofile-exclude-files="
770  << "--coverage";
771 
772  StringRef v = Arg->getValue();
773  CmdArgs.push_back(
774  Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));
775  }
776 
777  if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {
778  auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
779  if (!Args.hasArg(options::OPT_coverage))
780  D.Diag(clang::diag::err_drv_argument_only_allowed_with)
781  << "-fprofile-filter-files="
782  << "--coverage";
783 
784  StringRef v = Arg->getValue();
785  CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));
786  }
787 
788  // Leave -fprofile-dir= an unused argument unless .gcda emission is
789  // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
790  // the flag used. There is no -fno-profile-dir, so the user has no
791  // targeted way to suppress the warning.
792  Arg *FProfileDir = nullptr;
793  if (Args.hasArg(options::OPT_fprofile_arcs) ||
794  Args.hasArg(options::OPT_coverage))
795  FProfileDir = Args.getLastArg(options::OPT_fprofile_dir);
796 
797  // Put the .gcno and .gcda files (if needed) next to the object file or
798  // bitcode file in the case of LTO.
799  // FIXME: There should be a simpler way to find the object file for this
800  // input, and this code probably does the wrong thing for commands that
801  // compile and link all at once.
802  if ((Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) &&
803  (EmitCovNotes || EmitCovData) && Output.isFilename()) {
804  SmallString<128> OutputFilename;
805  if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
806  OutputFilename = FinalOutput->getValue();
807  else
808  OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
809  SmallString<128> CoverageFilename = OutputFilename;
810  if (llvm::sys::path::is_relative(CoverageFilename))
811  (void)D.getVFS().makeAbsolute(CoverageFilename);
812  llvm::sys::path::replace_extension(CoverageFilename, "gcno");
813 
814  CmdArgs.push_back("-coverage-notes-file");
815  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
816 
817  if (EmitCovData) {
818  if (FProfileDir) {
819  CoverageFilename = FProfileDir->getValue();
820  llvm::sys::path::append(CoverageFilename, OutputFilename);
821  }
822  llvm::sys::path::replace_extension(CoverageFilename, "gcda");
823  CmdArgs.push_back("-coverage-data-file");
824  CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
825  }
826  }
827 }
828 
829 /// Check whether the given input tree contains any compilation actions.
830 static bool ContainsCompileAction(const Action *A) {
831  if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
832  return true;
833 
834  for (const auto &AI : A->inputs())
835  if (ContainsCompileAction(AI))
836  return true;
837 
838  return false;
839 }
840 
841 /// Check if -relax-all should be passed to the internal assembler.
842 /// This is done by default when compiling non-assembler source with -O0.
843 static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
844  bool RelaxDefault = true;
845 
846  if (Arg *A = Args.getLastArg(options::OPT_O_Group))
847  RelaxDefault = A->getOption().matches(options::OPT_O0);
848 
849  if (RelaxDefault) {
850  RelaxDefault = false;
851  for (const auto &Act : C.getActions()) {
852  if (ContainsCompileAction(Act)) {
853  RelaxDefault = true;
854  break;
855  }
856  }
857  }
858 
859  return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
860  RelaxDefault);
861 }
862 
863 // Extract the integer N from a string spelled "-dwarf-N", returning 0
864 // on mismatch. The StringRef input (rather than an Arg) allows
865 // for use by the "-Xassembler" option parser.
866 static unsigned DwarfVersionNum(StringRef ArgValue) {
867  return llvm::StringSwitch<unsigned>(ArgValue)
868  .Case("-gdwarf-2", 2)
869  .Case("-gdwarf-3", 3)
870  .Case("-gdwarf-4", 4)
871  .Case("-gdwarf-5", 5)
872  .Default(0);
873 }
874 
875 static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
877  unsigned DwarfVersion,
878  llvm::DebuggerKind DebuggerTuning) {
879  switch (DebugInfoKind) {
881  CmdArgs.push_back("-debug-info-kind=line-directives-only");
882  break;
884  CmdArgs.push_back("-debug-info-kind=line-tables-only");
885  break;
887  CmdArgs.push_back("-debug-info-kind=limited");
888  break;
890  CmdArgs.push_back("-debug-info-kind=standalone");
891  break;
892  default:
893  break;
894  }
895  if (DwarfVersion > 0)
896  CmdArgs.push_back(
897  Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
898  switch (DebuggerTuning) {
899  case llvm::DebuggerKind::GDB:
900  CmdArgs.push_back("-debugger-tuning=gdb");
901  break;
902  case llvm::DebuggerKind::LLDB:
903  CmdArgs.push_back("-debugger-tuning=lldb");
904  break;
905  case llvm::DebuggerKind::SCE:
906  CmdArgs.push_back("-debugger-tuning=sce");
907  break;
908  default:
909  break;
910  }
911 }
912 
913 static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
914  const Driver &D, const ToolChain &TC) {
915  assert(A && "Expected non-nullptr argument.");
916  if (TC.supportsDebugInfoOption(A))
917  return true;
918  D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)
919  << A->getAsString(Args) << TC.getTripleString();
920  return false;
921 }
922 
923 static void RenderDebugInfoCompressionArgs(const ArgList &Args,
924  ArgStringList &CmdArgs,
925  const Driver &D,
926  const ToolChain &TC) {
927  const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ);
928  if (!A)
929  return;
930  if (checkDebugInfoOption(A, Args, D, TC)) {
931  if (A->getOption().getID() == options::OPT_gz) {
932  if (llvm::zlib::isAvailable())
933  CmdArgs.push_back("--compress-debug-sections");
934  else
935  D.Diag(diag::warn_debug_compression_unavailable);
936  return;
937  }
938 
939  StringRef Value = A->getValue();
940  if (Value == "none") {
941  CmdArgs.push_back("--compress-debug-sections=none");
942  } else if (Value == "zlib" || Value == "zlib-gnu") {
943  if (llvm::zlib::isAvailable()) {
944  CmdArgs.push_back(
945  Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
946  } else {
947  D.Diag(diag::warn_debug_compression_unavailable);
948  }
949  } else {
950  D.Diag(diag::err_drv_unsupported_option_argument)
951  << A->getOption().getName() << Value;
952  }
953  }
954 }
955 
956 static const char *RelocationModelName(llvm::Reloc::Model Model) {
957  switch (Model) {
958  case llvm::Reloc::Static:
959  return "static";
960  case llvm::Reloc::PIC_:
961  return "pic";
962  case llvm::Reloc::DynamicNoPIC:
963  return "dynamic-no-pic";
964  case llvm::Reloc::ROPI:
965  return "ropi";
966  case llvm::Reloc::RWPI:
967  return "rwpi";
968  case llvm::Reloc::ROPI_RWPI:
969  return "ropi-rwpi";
970  }
971  llvm_unreachable("Unknown Reloc::Model kind");
972 }
973 
974 void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
975  const Driver &D, const ArgList &Args,
976  ArgStringList &CmdArgs,
977  const InputInfo &Output,
978  const InputInfoList &Inputs) const {
979  const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
980 
981  CheckPreprocessingOptions(D, Args);
982 
983  Args.AddLastArg(CmdArgs, options::OPT_C);
984  Args.AddLastArg(CmdArgs, options::OPT_CC);
985 
986  // Handle dependency file generation.
987  Arg *ArgM = Args.getLastArg(options::OPT_MM);
988  if (!ArgM)
989  ArgM = Args.getLastArg(options::OPT_M);
990  Arg *ArgMD = Args.getLastArg(options::OPT_MMD);
991  if (!ArgMD)
992  ArgMD = Args.getLastArg(options::OPT_MD);
993 
994  // -M and -MM imply -w.
995  if (ArgM)
996  CmdArgs.push_back("-w");
997  else
998  ArgM = ArgMD;
999 
1000  if (ArgM) {
1001  // Determine the output location.
1002  const char *DepFile;
1003  if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
1004  DepFile = MF->getValue();
1005  C.addFailureResultFile(DepFile, &JA);
1006  } else if (Output.getType() == types::TY_Dependencies) {
1007  DepFile = Output.getFilename();
1008  } else if (!ArgMD) {
1009  DepFile = "-";
1010  } else {
1011  DepFile = getDependencyFileName(Args, Inputs);
1012  C.addFailureResultFile(DepFile, &JA);
1013  }
1014  CmdArgs.push_back("-dependency-file");
1015  CmdArgs.push_back(DepFile);
1016 
1017  bool HasTarget = false;
1018  for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
1019  HasTarget = true;
1020  A->claim();
1021  if (A->getOption().matches(options::OPT_MT)) {
1022  A->render(Args, CmdArgs);
1023  } else {
1024  CmdArgs.push_back("-MT");
1025  SmallString<128> Quoted;
1026  QuoteTarget(A->getValue(), Quoted);
1027  CmdArgs.push_back(Args.MakeArgString(Quoted));
1028  }
1029  }
1030 
1031  // Add a default target if one wasn't specified.
1032  if (!HasTarget) {
1033  const char *DepTarget;
1034 
1035  // If user provided -o, that is the dependency target, except
1036  // when we are only generating a dependency file.
1037  Arg *OutputOpt = Args.getLastArg(options::OPT_o);
1038  if (OutputOpt && Output.getType() != types::TY_Dependencies) {
1039  DepTarget = OutputOpt->getValue();
1040  } else {
1041  // Otherwise derive from the base input.
1042  //
1043  // FIXME: This should use the computed output file location.
1044  SmallString<128> P(Inputs[0].getBaseInput());
1045  llvm::sys::path::replace_extension(P, "o");
1046  DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
1047  }
1048 
1049  CmdArgs.push_back("-MT");
1050  SmallString<128> Quoted;
1051  QuoteTarget(DepTarget, Quoted);
1052  CmdArgs.push_back(Args.MakeArgString(Quoted));
1053  }
1054 
1055  if (ArgM->getOption().matches(options::OPT_M) ||
1056  ArgM->getOption().matches(options::OPT_MD))
1057  CmdArgs.push_back("-sys-header-deps");
1058  if ((isa<PrecompileJobAction>(JA) &&
1059  !Args.hasArg(options::OPT_fno_module_file_deps)) ||
1060  Args.hasArg(options::OPT_fmodule_file_deps))
1061  CmdArgs.push_back("-module-file-deps");
1062  }
1063 
1064  if (Args.hasArg(options::OPT_MG)) {
1065  if (!ArgM || ArgM->getOption().matches(options::OPT_MD) ||
1066  ArgM->getOption().matches(options::OPT_MMD))
1067  D.Diag(diag::err_drv_mg_requires_m_or_mm);
1068  CmdArgs.push_back("-MG");
1069  }
1070 
1071  Args.AddLastArg(CmdArgs, options::OPT_MP);
1072  Args.AddLastArg(CmdArgs, options::OPT_MV);
1073 
1074  // Add offload include arguments specific for CUDA. This must happen before
1075  // we -I or -include anything else, because we must pick up the CUDA headers
1076  // from the particular CUDA installation, rather than from e.g.
1077  // /usr/local/include.
1079  getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
1080 
1081  // If we are offloading to a target via OpenMP we need to include the
1082  // openmp_wrappers folder which contains alternative system headers.
1084  getToolChain().getTriple().isNVPTX()){
1085  if (!Args.hasArg(options::OPT_nobuiltininc)) {
1086  // Add openmp_wrappers/* to our system include path. This lets us wrap
1087  // standard library headers.
1089  llvm::sys::path::append(P, "include");
1090  llvm::sys::path::append(P, "openmp_wrappers");
1091  CmdArgs.push_back("-internal-isystem");
1092  CmdArgs.push_back(Args.MakeArgString(P));
1093  }
1094 
1095  CmdArgs.push_back("-include");
1096  CmdArgs.push_back("__clang_openmp_math_declares.h");
1097  }
1098 
1099  // Add -i* options, and automatically translate to
1100  // -include-pch/-include-pth for transparent PCH support. It's
1101  // wonky, but we include looking for .gch so we can support seamless
1102  // replacement into a build system already set up to be generating
1103  // .gch files.
1104 
1105  if (getToolChain().getDriver().IsCLMode()) {
1106  const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
1107  const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
1108  if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
1110  CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));
1111  }
1112  if (YcArg || YuArg) {
1113  StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
1114  if (!isa<PrecompileJobAction>(JA)) {
1115  CmdArgs.push_back("-include-pch");
1116  CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(
1117  C, !ThroughHeader.empty()
1118  ? ThroughHeader
1119  : llvm::sys::path::filename(Inputs[0].getBaseInput()))));
1120  }
1121 
1122  if (ThroughHeader.empty()) {
1123  CmdArgs.push_back(Args.MakeArgString(
1124  Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1125  } else {
1126  CmdArgs.push_back(
1127  Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));
1128  }
1129  }
1130  }
1131 
1132  bool RenderedImplicitInclude = false;
1133  for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1134  if (A->getOption().matches(options::OPT_include)) {
1135  // Handling of gcc-style gch precompiled headers.
1136  bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1137  RenderedImplicitInclude = true;
1138 
1139  bool FoundPCH = false;
1140  SmallString<128> P(A->getValue());
1141  // We want the files to have a name like foo.h.pch. Add a dummy extension
1142  // so that replace_extension does the right thing.
1143  P += ".dummy";
1144  llvm::sys::path::replace_extension(P, "pch");
1145  if (llvm::sys::fs::exists(P))
1146  FoundPCH = true;
1147 
1148  if (!FoundPCH) {
1149  llvm::sys::path::replace_extension(P, "gch");
1150  if (llvm::sys::fs::exists(P)) {
1151  FoundPCH = true;
1152  }
1153  }
1154 
1155  if (FoundPCH) {
1156  if (IsFirstImplicitInclude) {
1157  A->claim();
1158  CmdArgs.push_back("-include-pch");
1159  CmdArgs.push_back(Args.MakeArgString(P));
1160  continue;
1161  } else {
1162  // Ignore the PCH if not first on command line and emit warning.
1163  D.Diag(diag::warn_drv_pch_not_first_include) << P
1164  << A->getAsString(Args);
1165  }
1166  }
1167  } else if (A->getOption().matches(options::OPT_isystem_after)) {
1168  // Handling of paths which must come late. These entries are handled by
1169  // the toolchain itself after the resource dir is inserted in the right
1170  // search order.
1171  // Do not claim the argument so that the use of the argument does not
1172  // silently go unnoticed on toolchains which do not honour the option.
1173  continue;
1174  } else if (A->getOption().matches(options::OPT_stdlibxx_isystem)) {
1175  // Translated to -internal-isystem by the driver, no need to pass to cc1.
1176  continue;
1177  }
1178 
1179  // Not translated, render as usual.
1180  A->claim();
1181  A->render(Args, CmdArgs);
1182  }
1183 
1184  Args.AddAllArgs(CmdArgs,
1185  {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1186  options::OPT_F, options::OPT_index_header_map});
1187 
1188  // Add -Wp, and -Xpreprocessor if using the preprocessor.
1189 
1190  // FIXME: There is a very unfortunate problem here, some troubled
1191  // souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1192  // really support that we would have to parse and then translate
1193  // those options. :(
1194  Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1195  options::OPT_Xpreprocessor);
1196 
1197  // -I- is a deprecated GCC feature, reject it.
1198  if (Arg *A = Args.getLastArg(options::OPT_I_))
1199  D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1200 
1201  // If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1202  // -isysroot to the CC1 invocation.
1203  StringRef sysroot = C.getSysRoot();
1204  if (sysroot != "") {
1205  if (!Args.hasArg(options::OPT_isysroot)) {
1206  CmdArgs.push_back("-isysroot");
1207  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
1208  }
1209  }
1210 
1211  // Parse additional include paths from environment variables.
1212  // FIXME: We should probably sink the logic for handling these from the
1213  // frontend into the driver. It will allow deleting 4 otherwise unused flags.
1214  // CPATH - included following the user specified includes (but prior to
1215  // builtin and standard includes).
1216  addDirectoryList(Args, CmdArgs, "-I", "CPATH");
1217  // C_INCLUDE_PATH - system includes enabled when compiling C.
1218  addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
1219  // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1220  addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
1221  // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1222  addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
1223  // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1224  addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
1225 
1226  // While adding the include arguments, we also attempt to retrieve the
1227  // arguments of related offloading toolchains or arguments that are specific
1228  // of an offloading programming model.
1229 
1230  // Add C++ include arguments, if needed.
1231  if (types::isCXX(Inputs[0].getType())) {
1232  bool HasStdlibxxIsystem = Args.hasArg(options::OPT_stdlibxx_isystem);
1234  C, JA, getToolChain(),
1235  [&Args, &CmdArgs, HasStdlibxxIsystem](const ToolChain &TC) {
1236  HasStdlibxxIsystem ? TC.AddClangCXXStdlibIsystemArgs(Args, CmdArgs)
1237  : TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
1238  });
1239  }
1240 
1241  // Add system include arguments for all targets but IAMCU.
1242  if (!IsIAMCU)
1243  forAllAssociatedToolChains(C, JA, getToolChain(),
1244  [&Args, &CmdArgs](const ToolChain &TC) {
1245  TC.AddClangSystemIncludeArgs(Args, CmdArgs);
1246  });
1247  else {
1248  // For IAMCU add special include arguments.
1249  getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
1250  }
1251 }
1252 
1253 // FIXME: Move to target hook.
1254 static bool isSignedCharDefault(const llvm::Triple &Triple) {
1255  switch (Triple.getArch()) {
1256  default:
1257  return true;
1258 
1259  case llvm::Triple::aarch64:
1260  case llvm::Triple::aarch64_be:
1261  case llvm::Triple::arm:
1262  case llvm::Triple::armeb:
1263  case llvm::Triple::thumb:
1264  case llvm::Triple::thumbeb:
1265  if (Triple.isOSDarwin() || Triple.isOSWindows())
1266  return true;
1267  return false;
1268 
1269  case llvm::Triple::ppc:
1270  case llvm::Triple::ppc64:
1271  if (Triple.isOSDarwin())
1272  return true;
1273  return false;
1274 
1275  case llvm::Triple::hexagon:
1276  case llvm::Triple::ppc64le:
1277  case llvm::Triple::riscv32:
1278  case llvm::Triple::riscv64:
1279  case llvm::Triple::systemz:
1280  case llvm::Triple::xcore:
1281  return false;
1282  }
1283 }
1284 
1285 static bool isNoCommonDefault(const llvm::Triple &Triple) {
1286  switch (Triple.getArch()) {
1287  default:
1288  if (Triple.isOSFuchsia())
1289  return true;
1290  return false;
1291 
1292  case llvm::Triple::xcore:
1293  case llvm::Triple::wasm32:
1294  case llvm::Triple::wasm64:
1295  return true;
1296  }
1297 }
1298 
1299 namespace {
1300 void RenderARMABI(const llvm::Triple &Triple, const ArgList &Args,
1301  ArgStringList &CmdArgs) {
1302  // Select the ABI to use.
1303  // FIXME: Support -meabi.
1304  // FIXME: Parts of this are duplicated in the backend, unify this somehow.
1305  const char *ABIName = nullptr;
1306  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1307  ABIName = A->getValue();
1308  } else {
1309  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
1310  ABIName = llvm::ARM::computeDefaultTargetABI(Triple, CPU).data();
1311  }
1312 
1313  CmdArgs.push_back("-target-abi");
1314  CmdArgs.push_back(ABIName);
1315 }
1316 }
1317 
1318 void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1319  ArgStringList &CmdArgs, bool KernelOrKext) const {
1320  RenderARMABI(Triple, Args, CmdArgs);
1321 
1322  // Determine floating point ABI from the options & target defaults.
1323  arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
1324  if (ABI == arm::FloatABI::Soft) {
1325  // Floating point operations and argument passing are soft.
1326  // FIXME: This changes CPP defines, we need -target-soft-float.
1327  CmdArgs.push_back("-msoft-float");
1328  CmdArgs.push_back("-mfloat-abi");
1329  CmdArgs.push_back("soft");
1330  } else if (ABI == arm::FloatABI::SoftFP) {
1331  // Floating point operations are hard, but argument passing is soft.
1332  CmdArgs.push_back("-mfloat-abi");
1333  CmdArgs.push_back("soft");
1334  } else {
1335  // Floating point operations and argument passing are hard.
1336  assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1337  CmdArgs.push_back("-mfloat-abi");
1338  CmdArgs.push_back("hard");
1339  }
1340 
1341  // Forward the -mglobal-merge option for explicit control over the pass.
1342  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1343  options::OPT_mno_global_merge)) {
1344  CmdArgs.push_back("-mllvm");
1345  if (A->getOption().matches(options::OPT_mno_global_merge))
1346  CmdArgs.push_back("-arm-global-merge=false");
1347  else
1348  CmdArgs.push_back("-arm-global-merge=true");
1349  }
1350 
1351  if (!Args.hasFlag(options::OPT_mimplicit_float,
1352  options::OPT_mno_implicit_float, true))
1353  CmdArgs.push_back("-no-implicit-float");
1354 
1355  if (Args.getLastArg(options::OPT_mcmse))
1356  CmdArgs.push_back("-mcmse");
1357 }
1358 
1359 void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1360  const ArgList &Args, bool KernelOrKext,
1361  ArgStringList &CmdArgs) const {
1362  const ToolChain &TC = getToolChain();
1363 
1364  // Add the target features
1365  getTargetFeatures(TC, EffectiveTriple, Args, CmdArgs, false);
1366 
1367  // Add target specific flags.
1368  switch (TC.getArch()) {
1369  default:
1370  break;
1371 
1372  case llvm::Triple::arm:
1373  case llvm::Triple::armeb:
1374  case llvm::Triple::thumb:
1375  case llvm::Triple::thumbeb:
1376  // Use the effective triple, which takes into account the deployment target.
1377  AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);
1378  CmdArgs.push_back("-fallow-half-arguments-and-returns");
1379  break;
1380 
1381  case llvm::Triple::aarch64:
1382  case llvm::Triple::aarch64_be:
1383  AddAArch64TargetArgs(Args, CmdArgs);
1384  CmdArgs.push_back("-fallow-half-arguments-and-returns");
1385  break;
1386 
1387  case llvm::Triple::mips:
1388  case llvm::Triple::mipsel:
1389  case llvm::Triple::mips64:
1390  case llvm::Triple::mips64el:
1391  AddMIPSTargetArgs(Args, CmdArgs);
1392  break;
1393 
1394  case llvm::Triple::ppc:
1395  case llvm::Triple::ppc64:
1396  case llvm::Triple::ppc64le:
1397  AddPPCTargetArgs(Args, CmdArgs);
1398  break;
1399 
1400  case llvm::Triple::riscv32:
1401  case llvm::Triple::riscv64:
1402  AddRISCVTargetArgs(Args, CmdArgs);
1403  break;
1404 
1405  case llvm::Triple::sparc:
1406  case llvm::Triple::sparcel:
1407  case llvm::Triple::sparcv9:
1408  AddSparcTargetArgs(Args, CmdArgs);
1409  break;
1410 
1411  case llvm::Triple::systemz:
1412  AddSystemZTargetArgs(Args, CmdArgs);
1413  break;
1414 
1415  case llvm::Triple::x86:
1416  case llvm::Triple::x86_64:
1417  AddX86TargetArgs(Args, CmdArgs);
1418  break;
1419 
1420  case llvm::Triple::lanai:
1421  AddLanaiTargetArgs(Args, CmdArgs);
1422  break;
1423 
1424  case llvm::Triple::hexagon:
1425  AddHexagonTargetArgs(Args, CmdArgs);
1426  break;
1427 
1428  case llvm::Triple::wasm32:
1429  case llvm::Triple::wasm64:
1430  AddWebAssemblyTargetArgs(Args, CmdArgs);
1431  break;
1432  }
1433 }
1434 
1435 // Parse -mbranch-protection=<protection>[+<protection>]* where
1436 // <protection> ::= standard | none | [bti,pac-ret[+b-key,+leaf]*]
1437 // Returns a triple of (return address signing Scope, signing key, require
1438 // landing pads)
1439 static std::tuple<StringRef, StringRef, bool>
1440 ParseAArch64BranchProtection(const Driver &D, const ArgList &Args,
1441  const Arg *A) {
1442  StringRef Scope = "none";
1443  StringRef Key = "a_key";
1444  bool IndirectBranches = false;
1445 
1446  StringRef Value = A->getValue();
1447  // This maps onto -mbranch-protection=<scope>+<key>
1448 
1449  if (Value.equals("standard")) {
1450  Scope = "non-leaf";
1451  Key = "a_key";
1452  IndirectBranches = true;
1453 
1454  } else if (!Value.equals("none")) {
1455  SmallVector<StringRef, 4> BranchProtection;
1456  StringRef(A->getValue()).split(BranchProtection, '+');
1457 
1458  auto Protection = BranchProtection.begin();
1459  while (Protection != BranchProtection.end()) {
1460  if (Protection->equals("bti"))
1461  IndirectBranches = true;
1462  else if (Protection->equals("pac-ret")) {
1463  Scope = "non-leaf";
1464  while (++Protection != BranchProtection.end()) {
1465  // Inner loop as "leaf" and "b-key" options must only appear attached
1466  // to pac-ret.
1467  if (Protection->equals("leaf"))
1468  Scope = "all";
1469  else if (Protection->equals("b-key"))
1470  Key = "b_key";
1471  else
1472  break;
1473  }
1474  Protection--;
1475  } else
1476  D.Diag(diag::err_invalid_branch_protection)
1477  << *Protection << A->getAsString(Args);
1478  Protection++;
1479  }
1480  }
1481 
1482  return std::make_tuple(Scope, Key, IndirectBranches);
1483 }
1484 
1485 namespace {
1486 void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1487  ArgStringList &CmdArgs) {
1488  const char *ABIName = nullptr;
1489  if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1490  ABIName = A->getValue();
1491  else if (Triple.isOSDarwin())
1492  ABIName = "darwinpcs";
1493  else
1494  ABIName = "aapcs";
1495 
1496  CmdArgs.push_back("-target-abi");
1497  CmdArgs.push_back(ABIName);
1498 }
1499 }
1500 
1501 void Clang::AddAArch64TargetArgs(const ArgList &Args,
1502  ArgStringList &CmdArgs) const {
1503  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1504 
1505  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1506  Args.hasArg(options::OPT_mkernel) ||
1507  Args.hasArg(options::OPT_fapple_kext))
1508  CmdArgs.push_back("-disable-red-zone");
1509 
1510  if (!Args.hasFlag(options::OPT_mimplicit_float,
1511  options::OPT_mno_implicit_float, true))
1512  CmdArgs.push_back("-no-implicit-float");
1513 
1514  RenderAArch64ABI(Triple, Args, CmdArgs);
1515 
1516  if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
1517  options::OPT_mno_fix_cortex_a53_835769)) {
1518  CmdArgs.push_back("-mllvm");
1519  if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
1520  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1521  else
1522  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
1523  } else if (Triple.isAndroid()) {
1524  // Enabled A53 errata (835769) workaround by default on android
1525  CmdArgs.push_back("-mllvm");
1526  CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
1527  }
1528 
1529  // Forward the -mglobal-merge option for explicit control over the pass.
1530  if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1531  options::OPT_mno_global_merge)) {
1532  CmdArgs.push_back("-mllvm");
1533  if (A->getOption().matches(options::OPT_mno_global_merge))
1534  CmdArgs.push_back("-aarch64-enable-global-merge=false");
1535  else
1536  CmdArgs.push_back("-aarch64-enable-global-merge=true");
1537  }
1538 
1539  // Enable/disable return address signing and indirect branch targets.
1540  if (Arg *A = Args.getLastArg(options::OPT_msign_return_address_EQ,
1541  options::OPT_mbranch_protection_EQ)) {
1542 
1543  const Driver &D = getToolChain().getDriver();
1544 
1545  StringRef Scope, Key;
1546  bool IndirectBranches;
1547 
1548  if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1549  Scope = A->getValue();
1550  if (!Scope.equals("none") && !Scope.equals("non-leaf") &&
1551  !Scope.equals("all"))
1552  D.Diag(diag::err_invalid_branch_protection)
1553  << Scope << A->getAsString(Args);
1554  Key = "a_key";
1555  IndirectBranches = false;
1556  } else
1557  std::tie(Scope, Key, IndirectBranches) =
1558  ParseAArch64BranchProtection(D, Args, A);
1559 
1560  CmdArgs.push_back(
1561  Args.MakeArgString(Twine("-msign-return-address=") + Scope));
1562  CmdArgs.push_back(
1563  Args.MakeArgString(Twine("-msign-return-address-key=") + Key));
1564  if (IndirectBranches)
1565  CmdArgs.push_back("-mbranch-target-enforce");
1566  }
1567 }
1568 
1569 void Clang::AddMIPSTargetArgs(const ArgList &Args,
1570  ArgStringList &CmdArgs) const {
1571  const Driver &D = getToolChain().getDriver();
1572  StringRef CPUName;
1573  StringRef ABIName;
1574  const llvm::Triple &Triple = getToolChain().getTriple();
1575  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1576 
1577  CmdArgs.push_back("-target-abi");
1578  CmdArgs.push_back(ABIName.data());
1579 
1580  mips::FloatABI ABI = mips::getMipsFloatABI(D, Args, Triple);
1581  if (ABI == mips::FloatABI::Soft) {
1582  // Floating point operations and argument passing are soft.
1583  CmdArgs.push_back("-msoft-float");
1584  CmdArgs.push_back("-mfloat-abi");
1585  CmdArgs.push_back("soft");
1586  } else {
1587  // Floating point operations and argument passing are hard.
1588  assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1589  CmdArgs.push_back("-mfloat-abi");
1590  CmdArgs.push_back("hard");
1591  }
1592 
1593  if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1594  options::OPT_mno_ldc1_sdc1)) {
1595  if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1596  CmdArgs.push_back("-mllvm");
1597  CmdArgs.push_back("-mno-ldc1-sdc1");
1598  }
1599  }
1600 
1601  if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1602  options::OPT_mno_check_zero_division)) {
1603  if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1604  CmdArgs.push_back("-mllvm");
1605  CmdArgs.push_back("-mno-check-zero-division");
1606  }
1607  }
1608 
1609  if (Arg *A = Args.getLastArg(options::OPT_G)) {
1610  StringRef v = A->getValue();
1611  CmdArgs.push_back("-mllvm");
1612  CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
1613  A->claim();
1614  }
1615 
1616  Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1617  Arg *ABICalls =
1618  Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1619 
1620  // -mabicalls is the default for many MIPS environments, even with -fno-pic.
1621  // -mgpopt is the default for static, -fno-pic environments but these two
1622  // options conflict. We want to be certain that -mno-abicalls -mgpopt is
1623  // the only case where -mllvm -mgpopt is passed.
1624  // NOTE: We need a warning here or in the backend to warn when -mgpopt is
1625  // passed explicitly when compiling something with -mabicalls
1626  // (implictly) in affect. Currently the warning is in the backend.
1627  //
1628  // When the ABI in use is N64, we also need to determine the PIC mode that
1629  // is in use, as -fno-pic for N64 implies -mno-abicalls.
1630  bool NoABICalls =
1631  ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1632 
1633  llvm::Reloc::Model RelocationModel;
1634  unsigned PICLevel;
1635  bool IsPIE;
1636  std::tie(RelocationModel, PICLevel, IsPIE) =
1637  ParsePICArgs(getToolChain(), Args);
1638 
1639  NoABICalls = NoABICalls ||
1640  (RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1641 
1642  bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1643  // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1644  if (NoABICalls && (!GPOpt || WantGPOpt)) {
1645  CmdArgs.push_back("-mllvm");
1646  CmdArgs.push_back("-mgpopt");
1647 
1648  Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1649  options::OPT_mno_local_sdata);
1650  Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1651  options::OPT_mno_extern_sdata);
1652  Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1653  options::OPT_mno_embedded_data);
1654  if (LocalSData) {
1655  CmdArgs.push_back("-mllvm");
1656  if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1657  CmdArgs.push_back("-mlocal-sdata=1");
1658  } else {
1659  CmdArgs.push_back("-mlocal-sdata=0");
1660  }
1661  LocalSData->claim();
1662  }
1663 
1664  if (ExternSData) {
1665  CmdArgs.push_back("-mllvm");
1666  if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1667  CmdArgs.push_back("-mextern-sdata=1");
1668  } else {
1669  CmdArgs.push_back("-mextern-sdata=0");
1670  }
1671  ExternSData->claim();
1672  }
1673 
1674  if (EmbeddedData) {
1675  CmdArgs.push_back("-mllvm");
1676  if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1677  CmdArgs.push_back("-membedded-data=1");
1678  } else {
1679  CmdArgs.push_back("-membedded-data=0");
1680  }
1681  EmbeddedData->claim();
1682  }
1683 
1684  } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1685  D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1686 
1687  if (GPOpt)
1688  GPOpt->claim();
1689 
1690  if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1691  StringRef Val = StringRef(A->getValue());
1692  if (mips::hasCompactBranches(CPUName)) {
1693  if (Val == "never" || Val == "always" || Val == "optimal") {
1694  CmdArgs.push_back("-mllvm");
1695  CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
1696  } else
1697  D.Diag(diag::err_drv_unsupported_option_argument)
1698  << A->getOption().getName() << Val;
1699  } else
1700  D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1701  }
1702 
1703  if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,
1704  options::OPT_mno_relax_pic_calls)) {
1705  if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {
1706  CmdArgs.push_back("-mllvm");
1707  CmdArgs.push_back("-mips-jalr-reloc=0");
1708  }
1709  }
1710 }
1711 
1712 void Clang::AddPPCTargetArgs(const ArgList &Args,
1713  ArgStringList &CmdArgs) const {
1714  // Select the ABI to use.
1715  const char *ABIName = nullptr;
1716  if (getToolChain().getTriple().isOSLinux())
1717  switch (getToolChain().getArch()) {
1718  case llvm::Triple::ppc64: {
1719  // When targeting a processor that supports QPX, or if QPX is
1720  // specifically enabled, default to using the ABI that supports QPX (so
1721  // long as it is not specifically disabled).
1722  bool HasQPX = false;
1723  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
1724  HasQPX = A->getValue() == StringRef("a2q");
1725  HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
1726  if (HasQPX) {
1727  ABIName = "elfv1-qpx";
1728  break;
1729  }
1730 
1731  ABIName = "elfv1";
1732  break;
1733  }
1734  case llvm::Triple::ppc64le:
1735  ABIName = "elfv2";
1736  break;
1737  default:
1738  break;
1739  }
1740 
1741  bool IEEELongDouble = false;
1742  for (const Arg *A : Args.filtered(options::OPT_mabi_EQ)) {
1743  StringRef V = A->getValue();
1744  if (V == "ieeelongdouble")
1745  IEEELongDouble = true;
1746  else if (V == "ibmlongdouble")
1747  IEEELongDouble = false;
1748  else if (V != "altivec")
1749  // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1750  // the option if given as we don't have backend support for any targets
1751  // that don't use the altivec abi.
1752  ABIName = A->getValue();
1753  }
1754  if (IEEELongDouble)
1755  CmdArgs.push_back("-mabi=ieeelongdouble");
1756 
1758  ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
1759 
1760  if (FloatABI == ppc::FloatABI::Soft) {
1761  // Floating point operations and argument passing are soft.
1762  CmdArgs.push_back("-msoft-float");
1763  CmdArgs.push_back("-mfloat-abi");
1764  CmdArgs.push_back("soft");
1765  } else {
1766  // Floating point operations and argument passing are hard.
1767  assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1768  CmdArgs.push_back("-mfloat-abi");
1769  CmdArgs.push_back("hard");
1770  }
1771 
1772  if (ABIName) {
1773  CmdArgs.push_back("-target-abi");
1774  CmdArgs.push_back(ABIName);
1775  }
1776 }
1777 
1778 void Clang::AddRISCVTargetArgs(const ArgList &Args,
1779  ArgStringList &CmdArgs) const {
1780  const llvm::Triple &Triple = getToolChain().getTriple();
1781  StringRef ABIName = riscv::getRISCVABI(Args, Triple);
1782 
1783  CmdArgs.push_back("-target-abi");
1784  CmdArgs.push_back(ABIName.data());
1785 }
1786 
1787 void Clang::AddSparcTargetArgs(const ArgList &Args,
1788  ArgStringList &CmdArgs) const {
1790  sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
1791 
1792  if (FloatABI == sparc::FloatABI::Soft) {
1793  // Floating point operations and argument passing are soft.
1794  CmdArgs.push_back("-msoft-float");
1795  CmdArgs.push_back("-mfloat-abi");
1796  CmdArgs.push_back("soft");
1797  } else {
1798  // Floating point operations and argument passing are hard.
1799  assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
1800  CmdArgs.push_back("-mfloat-abi");
1801  CmdArgs.push_back("hard");
1802  }
1803 }
1804 
1805 void Clang::AddSystemZTargetArgs(const ArgList &Args,
1806  ArgStringList &CmdArgs) const {
1807  if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
1808  CmdArgs.push_back("-mbackchain");
1809 }
1810 
1811 void Clang::AddX86TargetArgs(const ArgList &Args,
1812  ArgStringList &CmdArgs) const {
1813  if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1814  Args.hasArg(options::OPT_mkernel) ||
1815  Args.hasArg(options::OPT_fapple_kext))
1816  CmdArgs.push_back("-disable-red-zone");
1817 
1818  if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
1819  options::OPT_mno_tls_direct_seg_refs, true))
1820  CmdArgs.push_back("-mno-tls-direct-seg-refs");
1821 
1822  // Default to avoid implicit floating-point for kernel/kext code, but allow
1823  // that to be overridden with -mno-soft-float.
1824  bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
1825  Args.hasArg(options::OPT_fapple_kext));
1826  if (Arg *A = Args.getLastArg(
1827  options::OPT_msoft_float, options::OPT_mno_soft_float,
1828  options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
1829  const Option &O = A->getOption();
1830  NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
1831  O.matches(options::OPT_msoft_float));
1832  }
1833  if (NoImplicitFloat)
1834  CmdArgs.push_back("-no-implicit-float");
1835 
1836  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
1837  StringRef Value = A->getValue();
1838  if (Value == "intel" || Value == "att") {
1839  CmdArgs.push_back("-mllvm");
1840  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
1841  } else {
1842  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
1843  << A->getOption().getName() << Value;
1844  }
1845  } else if (getToolChain().getDriver().IsCLMode()) {
1846  CmdArgs.push_back("-mllvm");
1847  CmdArgs.push_back("-x86-asm-syntax=intel");
1848  }
1849 
1850  // Set flags to support MCU ABI.
1851  if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
1852  CmdArgs.push_back("-mfloat-abi");
1853  CmdArgs.push_back("soft");
1854  CmdArgs.push_back("-mstack-alignment=4");
1855  }
1856 }
1857 
1858 void Clang::AddHexagonTargetArgs(const ArgList &Args,
1859  ArgStringList &CmdArgs) const {
1860  CmdArgs.push_back("-mqdsp6-compat");
1861  CmdArgs.push_back("-Wreturn-type");
1862 
1864  CmdArgs.push_back("-mllvm");
1865  CmdArgs.push_back(Args.MakeArgString("-hexagon-small-data-threshold=" +
1866  Twine(G.getValue())));
1867  }
1868 
1869  if (!Args.hasArg(options::OPT_fno_short_enums))
1870  CmdArgs.push_back("-fshort-enums");
1871  if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
1872  CmdArgs.push_back("-mllvm");
1873  CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
1874  }
1875  CmdArgs.push_back("-mllvm");
1876  CmdArgs.push_back("-machine-sink-split=0");
1877 }
1878 
1879 void Clang::AddLanaiTargetArgs(const ArgList &Args,
1880  ArgStringList &CmdArgs) const {
1881  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
1882  StringRef CPUName = A->getValue();
1883 
1884  CmdArgs.push_back("-target-cpu");
1885  CmdArgs.push_back(Args.MakeArgString(CPUName));
1886  }
1887  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
1888  StringRef Value = A->getValue();
1889  // Only support mregparm=4 to support old usage. Report error for all other
1890  // cases.
1891  int Mregparm;
1892  if (Value.getAsInteger(10, Mregparm)) {
1893  if (Mregparm != 4) {
1894  getToolChain().getDriver().Diag(
1895  diag::err_drv_unsupported_option_argument)
1896  << A->getOption().getName() << Value;
1897  }
1898  }
1899  }
1900 }
1901 
1902 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
1903  ArgStringList &CmdArgs) const {
1904  // Default to "hidden" visibility.
1905  if (!Args.hasArg(options::OPT_fvisibility_EQ,
1906  options::OPT_fvisibility_ms_compat)) {
1907  CmdArgs.push_back("-fvisibility");
1908  CmdArgs.push_back("hidden");
1909  }
1910 }
1911 
1912 void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
1913  StringRef Target, const InputInfo &Output,
1914  const InputInfo &Input, const ArgList &Args) const {
1915  // If this is a dry run, do not create the compilation database file.
1916  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1917  return;
1918 
1919  using llvm::yaml::escape;
1920  const Driver &D = getToolChain().getDriver();
1921 
1922  if (!CompilationDatabase) {
1923  std::error_code EC;
1924  auto File = std::make_unique<llvm::raw_fd_ostream>(Filename, EC,
1925  llvm::sys::fs::OF_Text);
1926  if (EC) {
1927  D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
1928  << EC.message();
1929  return;
1930  }
1931  CompilationDatabase = std::move(File);
1932  }
1933  auto &CDB = *CompilationDatabase;
1934  auto CWD = D.getVFS().getCurrentWorkingDirectory();
1935  if (!CWD)
1936  CWD = ".";
1937  CDB << "{ \"directory\": \"" << escape(*CWD) << "\"";
1938  CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";
1939  CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";
1940  CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";
1941  SmallString<128> Buf;
1942  Buf = "-x";
1943  Buf += types::getTypeName(Input.getType());
1944  CDB << ", \"" << escape(Buf) << "\"";
1945  if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
1946  Buf = "--sysroot=";
1947  Buf += D.SysRoot;
1948  CDB << ", \"" << escape(Buf) << "\"";
1949  }
1950  CDB << ", \"" << escape(Input.getFilename()) << "\"";
1951  for (auto &A: Args) {
1952  auto &O = A->getOption();
1953  // Skip language selection, which is positional.
1954  if (O.getID() == options::OPT_x)
1955  continue;
1956  // Skip writing dependency output and the compilation database itself.
1957  if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
1958  continue;
1959  if (O.getID() == options::OPT_gen_cdb_fragment_path)
1960  continue;
1961  // Skip inputs.
1962  if (O.getKind() == Option::InputClass)
1963  continue;
1964  // All other arguments are quoted and appended.
1965  ArgStringList ASL;
1966  A->render(Args, ASL);
1967  for (auto &it: ASL)
1968  CDB << ", \"" << escape(it) << "\"";
1969  }
1970  Buf = "--target=";
1971  Buf += Target;
1972  CDB << ", \"" << escape(Buf) << "\"]},\n";
1973 }
1974 
1975 void Clang::DumpCompilationDatabaseFragmentToDir(
1976  StringRef Dir, Compilation &C, StringRef Target, const InputInfo &Output,
1977  const InputInfo &Input, const llvm::opt::ArgList &Args) const {
1978  // If this is a dry run, do not create the compilation database file.
1979  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1980  return;
1981 
1982  if (CompilationDatabase)
1983  DumpCompilationDatabase(C, "", Target, Output, Input, Args);
1984 
1985  SmallString<256> Path = Dir;
1986  const auto &Driver = C.getDriver();
1987  Driver.getVFS().makeAbsolute(Path);
1988  auto Err = llvm::sys::fs::create_directory(Path, /*IgnoreExisting=*/true);
1989  if (Err) {
1990  Driver.Diag(diag::err_drv_compilationdatabase) << Dir << Err.message();
1991  return;
1992  }
1993 
1994  llvm::sys::path::append(
1995  Path,
1996  Twine(llvm::sys::path::filename(Input.getFilename())) + ".%%%%.json");
1997  int FD;
1998  SmallString<256> TempPath;
1999  Err = llvm::sys::fs::createUniqueFile(Path, FD, TempPath);
2000  if (Err) {
2001  Driver.Diag(diag::err_drv_compilationdatabase) << Path << Err.message();
2002  return;
2003  }
2004  CompilationDatabase =
2005  std::make_unique<llvm::raw_fd_ostream>(FD, /*shouldClose=*/true);
2006  DumpCompilationDatabase(C, "", Target, Output, Input, Args);
2007 }
2008 
2010  const ArgList &Args,
2011  ArgStringList &CmdArgs,
2012  const Driver &D) {
2013  if (UseRelaxAll(C, Args))
2014  CmdArgs.push_back("-mrelax-all");
2015 
2016  // Only default to -mincremental-linker-compatible if we think we are
2017  // targeting the MSVC linker.
2018  bool DefaultIncrementalLinkerCompatible =
2019  C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2020  if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
2021  options::OPT_mno_incremental_linker_compatible,
2022  DefaultIncrementalLinkerCompatible))
2023  CmdArgs.push_back("-mincremental-linker-compatible");
2024 
2025  switch (C.getDefaultToolChain().getArch()) {
2026  case llvm::Triple::arm:
2027  case llvm::Triple::armeb:
2028  case llvm::Triple::thumb:
2029  case llvm::Triple::thumbeb:
2030  if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
2031  StringRef Value = A->getValue();
2032  if (Value == "always" || Value == "never" || Value == "arm" ||
2033  Value == "thumb") {
2034  CmdArgs.push_back("-mllvm");
2035  CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
2036  } else {
2037  D.Diag(diag::err_drv_unsupported_option_argument)
2038  << A->getOption().getName() << Value;
2039  }
2040  }
2041  break;
2042  default:
2043  break;
2044  }
2045 
2046  // If you add more args here, also add them to the block below that
2047  // starts with "// If CollectArgsForIntegratedAssembler() isn't called below".
2048 
2049  // When passing -I arguments to the assembler we sometimes need to
2050  // unconditionally take the next argument. For example, when parsing
2051  // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2052  // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2053  // arg after parsing the '-I' arg.
2054  bool TakeNextArg = false;
2055 
2056  bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2057  bool UseNoExecStack = C.getDefaultToolChain().isNoExecStackDefault();
2058  const char *MipsTargetFeature = nullptr;
2059  for (const Arg *A :
2060  Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
2061  A->claim();
2062 
2063  for (StringRef Value : A->getValues()) {
2064  if (TakeNextArg) {
2065  CmdArgs.push_back(Value.data());
2066  TakeNextArg = false;
2067  continue;
2068  }
2069 
2070  if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2071  Value == "-mbig-obj")
2072  continue; // LLVM handles bigobj automatically
2073 
2074  switch (C.getDefaultToolChain().getArch()) {
2075  default:
2076  break;
2077  case llvm::Triple::thumb:
2078  case llvm::Triple::thumbeb:
2079  case llvm::Triple::arm:
2080  case llvm::Triple::armeb:
2081  if (Value == "-mthumb")
2082  // -mthumb has already been processed in ComputeLLVMTriple()
2083  // recognize but skip over here.
2084  continue;
2085  break;
2086  case llvm::Triple::mips:
2087  case llvm::Triple::mipsel:
2088  case llvm::Triple::mips64:
2089  case llvm::Triple::mips64el:
2090  if (Value == "--trap") {
2091  CmdArgs.push_back("-target-feature");
2092  CmdArgs.push_back("+use-tcc-in-div");
2093  continue;
2094  }
2095  if (Value == "--break") {
2096  CmdArgs.push_back("-target-feature");
2097  CmdArgs.push_back("-use-tcc-in-div");
2098  continue;
2099  }
2100  if (Value.startswith("-msoft-float")) {
2101  CmdArgs.push_back("-target-feature");
2102  CmdArgs.push_back("+soft-float");
2103  continue;
2104  }
2105  if (Value.startswith("-mhard-float")) {
2106  CmdArgs.push_back("-target-feature");
2107  CmdArgs.push_back("-soft-float");
2108  continue;
2109  }
2110 
2111  MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2112  .Case("-mips1", "+mips1")
2113  .Case("-mips2", "+mips2")
2114  .Case("-mips3", "+mips3")
2115  .Case("-mips4", "+mips4")
2116  .Case("-mips5", "+mips5")
2117  .Case("-mips32", "+mips32")
2118  .Case("-mips32r2", "+mips32r2")
2119  .Case("-mips32r3", "+mips32r3")
2120  .Case("-mips32r5", "+mips32r5")
2121  .Case("-mips32r6", "+mips32r6")
2122  .Case("-mips64", "+mips64")
2123  .Case("-mips64r2", "+mips64r2")
2124  .Case("-mips64r3", "+mips64r3")
2125  .Case("-mips64r5", "+mips64r5")
2126  .Case("-mips64r6", "+mips64r6")
2127  .Default(nullptr);
2128  if (MipsTargetFeature)
2129  continue;
2130  }
2131 
2132  if (Value == "-force_cpusubtype_ALL") {
2133  // Do nothing, this is the default and we don't support anything else.
2134  } else if (Value == "-L") {
2135  CmdArgs.push_back("-msave-temp-labels");
2136  } else if (Value == "--fatal-warnings") {
2137  CmdArgs.push_back("-massembler-fatal-warnings");
2138  } else if (Value == "--no-warn" || Value == "-W") {
2139  CmdArgs.push_back("-massembler-no-warn");
2140  } else if (Value == "--noexecstack") {
2141  UseNoExecStack = true;
2142  } else if (Value.startswith("-compress-debug-sections") ||
2143  Value.startswith("--compress-debug-sections") ||
2144  Value == "-nocompress-debug-sections" ||
2145  Value == "--nocompress-debug-sections") {
2146  CmdArgs.push_back(Value.data());
2147  } else if (Value == "-mrelax-relocations=yes" ||
2148  Value == "--mrelax-relocations=yes") {
2149  UseRelaxRelocations = true;
2150  } else if (Value == "-mrelax-relocations=no" ||
2151  Value == "--mrelax-relocations=no") {
2152  UseRelaxRelocations = false;
2153  } else if (Value.startswith("-I")) {
2154  CmdArgs.push_back(Value.data());
2155  // We need to consume the next argument if the current arg is a plain
2156  // -I. The next arg will be the include directory.
2157  if (Value == "-I")
2158  TakeNextArg = true;
2159  } else if (Value.startswith("-gdwarf-")) {
2160  // "-gdwarf-N" options are not cc1as options.
2161  unsigned DwarfVersion = DwarfVersionNum(Value);
2162  if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2163  CmdArgs.push_back(Value.data());
2164  } else {
2165  RenderDebugEnablingArgs(Args, CmdArgs,
2167  DwarfVersion, llvm::DebuggerKind::Default);
2168  }
2169  } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
2170  Value.startswith("-mhwdiv") || Value.startswith("-march")) {
2171  // Do nothing, we'll validate it later.
2172  } else if (Value == "-defsym") {
2173  if (A->getNumValues() != 2) {
2174  D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2175  break;
2176  }
2177  const char *S = A->getValue(1);
2178  auto Pair = StringRef(S).split('=');
2179  auto Sym = Pair.first;
2180  auto SVal = Pair.second;
2181 
2182  if (Sym.empty() || SVal.empty()) {
2183  D.Diag(diag::err_drv_defsym_invalid_format) << S;
2184  break;
2185  }
2186  int64_t IVal;
2187  if (SVal.getAsInteger(0, IVal)) {
2188  D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2189  break;
2190  }
2191  CmdArgs.push_back(Value.data());
2192  TakeNextArg = true;
2193  } else if (Value == "-fdebug-compilation-dir") {
2194  CmdArgs.push_back("-fdebug-compilation-dir");
2195  TakeNextArg = true;
2196  } else {
2197  D.Diag(diag::err_drv_unsupported_option_argument)
2198  << A->getOption().getName() << Value;
2199  }
2200  }
2201  }
2202  if (UseRelaxRelocations)
2203  CmdArgs.push_back("--mrelax-relocations");
2204  if (UseNoExecStack)
2205  CmdArgs.push_back("-mnoexecstack");
2206  if (MipsTargetFeature != nullptr) {
2207  CmdArgs.push_back("-target-feature");
2208  CmdArgs.push_back(MipsTargetFeature);
2209  }
2210 
2211  // forward -fembed-bitcode to assmebler
2212  if (C.getDriver().embedBitcodeEnabled() ||
2214  Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2215 }
2216 
2217 static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2218  bool OFastEnabled, const ArgList &Args,
2219  ArgStringList &CmdArgs) {
2220  // Handle various floating point optimization flags, mapping them to the
2221  // appropriate LLVM code generation flags. This is complicated by several
2222  // "umbrella" flags, so we do this by stepping through the flags incrementally
2223  // adjusting what we think is enabled/disabled, then at the end setting the
2224  // LLVM flags based on the final state.
2225  bool HonorINFs = true;
2226  bool HonorNaNs = true;
2227  // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2228  bool MathErrno = TC.IsMathErrnoDefault();
2229  bool AssociativeMath = false;
2230  bool ReciprocalMath = false;
2231  bool SignedZeros = true;
2232  bool TrappingMath = true;
2233  StringRef DenormalFPMath = "";
2234  StringRef FPContract = "";
2235 
2236  if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2237  CmdArgs.push_back("-mlimit-float-precision");
2238  CmdArgs.push_back(A->getValue());
2239  }
2240 
2241  for (const Arg *A : Args) {
2242  switch (A->getOption().getID()) {
2243  // If this isn't an FP option skip the claim below
2244  default: continue;
2245 
2246  // Options controlling individual features
2247  case options::OPT_fhonor_infinities: HonorINFs = true; break;
2248  case options::OPT_fno_honor_infinities: HonorINFs = false; break;
2249  case options::OPT_fhonor_nans: HonorNaNs = true; break;
2250  case options::OPT_fno_honor_nans: HonorNaNs = false; break;
2251  case options::OPT_fmath_errno: MathErrno = true; break;
2252  case options::OPT_fno_math_errno: MathErrno = false; break;
2253  case options::OPT_fassociative_math: AssociativeMath = true; break;
2254  case options::OPT_fno_associative_math: AssociativeMath = false; break;
2255  case options::OPT_freciprocal_math: ReciprocalMath = true; break;
2256  case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
2257  case options::OPT_fsigned_zeros: SignedZeros = true; break;
2258  case options::OPT_fno_signed_zeros: SignedZeros = false; break;
2259  case options::OPT_ftrapping_math: TrappingMath = true; break;
2260  case options::OPT_fno_trapping_math: TrappingMath = false; break;
2261 
2262  case options::OPT_fdenormal_fp_math_EQ:
2263  DenormalFPMath = A->getValue();
2264  break;
2265 
2266  // Validate and pass through -fp-contract option.
2267  case options::OPT_ffp_contract: {
2268  StringRef Val = A->getValue();
2269  if (Val == "fast" || Val == "on" || Val == "off")
2270  FPContract = Val;
2271  else
2272  D.Diag(diag::err_drv_unsupported_option_argument)
2273  << A->getOption().getName() << Val;
2274  break;
2275  }
2276 
2277  case options::OPT_ffinite_math_only:
2278  HonorINFs = false;
2279  HonorNaNs = false;
2280  break;
2281  case options::OPT_fno_finite_math_only:
2282  HonorINFs = true;
2283  HonorNaNs = true;
2284  break;
2285 
2286  case options::OPT_funsafe_math_optimizations:
2287  AssociativeMath = true;
2288  ReciprocalMath = true;
2289  SignedZeros = false;
2290  TrappingMath = false;
2291  break;
2292  case options::OPT_fno_unsafe_math_optimizations:
2293  AssociativeMath = false;
2294  ReciprocalMath = false;
2295  SignedZeros = true;
2296  TrappingMath = true;
2297  // -fno_unsafe_math_optimizations restores default denormal handling
2298  DenormalFPMath = "";
2299  break;
2300 
2301  case options::OPT_Ofast:
2302  // If -Ofast is the optimization level, then -ffast-math should be enabled
2303  if (!OFastEnabled)
2304  continue;
2305  LLVM_FALLTHROUGH;
2306  case options::OPT_ffast_math:
2307  HonorINFs = false;
2308  HonorNaNs = false;
2309  MathErrno = false;
2310  AssociativeMath = true;
2311  ReciprocalMath = true;
2312  SignedZeros = false;
2313  TrappingMath = false;
2314  // If fast-math is set then set the fp-contract mode to fast.
2315  FPContract = "fast";
2316  break;
2317  case options::OPT_fno_fast_math:
2318  HonorINFs = true;
2319  HonorNaNs = true;
2320  // Turning on -ffast-math (with either flag) removes the need for
2321  // MathErrno. However, turning *off* -ffast-math merely restores the
2322  // toolchain default (which may be false).
2323  MathErrno = TC.IsMathErrnoDefault();
2324  AssociativeMath = false;
2325  ReciprocalMath = false;
2326  SignedZeros = true;
2327  TrappingMath = true;
2328  // -fno_fast_math restores default denormal and fpcontract handling
2329  DenormalFPMath = "";
2330  FPContract = "";
2331  break;
2332  }
2333 
2334  // If we handled this option claim it
2335  A->claim();
2336  }
2337 
2338  if (!HonorINFs)
2339  CmdArgs.push_back("-menable-no-infs");
2340 
2341  if (!HonorNaNs)
2342  CmdArgs.push_back("-menable-no-nans");
2343 
2344  if (MathErrno)
2345  CmdArgs.push_back("-fmath-errno");
2346 
2347  if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
2348  !TrappingMath)
2349  CmdArgs.push_back("-menable-unsafe-fp-math");
2350 
2351  if (!SignedZeros)
2352  CmdArgs.push_back("-fno-signed-zeros");
2353 
2354  if (AssociativeMath && !SignedZeros && !TrappingMath)
2355  CmdArgs.push_back("-mreassociate");
2356 
2357  if (ReciprocalMath)
2358  CmdArgs.push_back("-freciprocal-math");
2359 
2360  if (!TrappingMath)
2361  CmdArgs.push_back("-fno-trapping-math");
2362 
2363  if (!DenormalFPMath.empty())
2364  CmdArgs.push_back(
2365  Args.MakeArgString("-fdenormal-fp-math=" + DenormalFPMath));
2366 
2367  if (!FPContract.empty())
2368  CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
2369 
2370  ParseMRecip(D, Args, CmdArgs);
2371 
2372  // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
2373  // individual features enabled by -ffast-math instead of the option itself as
2374  // that's consistent with gcc's behaviour.
2375  if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath &&
2376  ReciprocalMath && !SignedZeros && !TrappingMath)
2377  CmdArgs.push_back("-ffast-math");
2378 
2379  // Handle __FINITE_MATH_ONLY__ similarly.
2380  if (!HonorINFs && !HonorNaNs)
2381  CmdArgs.push_back("-ffinite-math-only");
2382 
2383  if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
2384  CmdArgs.push_back("-mfpmath");
2385  CmdArgs.push_back(A->getValue());
2386  }
2387 
2388  // Disable a codegen optimization for floating-point casts.
2389  if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
2390  options::OPT_fstrict_float_cast_overflow, false))
2391  CmdArgs.push_back("-fno-strict-float-cast-overflow");
2392 }
2393 
2394 static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
2395  const llvm::Triple &Triple,
2396  const InputInfo &Input) {
2397  // Enable region store model by default.
2398  CmdArgs.push_back("-analyzer-store=region");
2399 
2400  // Treat blocks as analysis entry points.
2401  CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
2402 
2403  // Add default argument set.
2404  if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
2405  CmdArgs.push_back("-analyzer-checker=core");
2406  CmdArgs.push_back("-analyzer-checker=apiModeling");
2407 
2408  if (!Triple.isWindowsMSVCEnvironment()) {
2409  CmdArgs.push_back("-analyzer-checker=unix");
2410  } else {
2411  // Enable "unix" checkers that also work on Windows.
2412  CmdArgs.push_back("-analyzer-checker=unix.API");
2413  CmdArgs.push_back("-analyzer-checker=unix.Malloc");
2414  CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
2415  CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
2416  CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
2417  CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
2418  }
2419 
2420  // Disable some unix checkers for PS4.
2421  if (Triple.isPS4CPU()) {
2422  CmdArgs.push_back("-analyzer-disable-checker=unix.API");
2423  CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
2424  }
2425 
2426  if (Triple.isOSDarwin())
2427  CmdArgs.push_back("-analyzer-checker=osx");
2428 
2429  CmdArgs.push_back("-analyzer-checker=deadcode");
2430 
2431  if (types::isCXX(Input.getType()))
2432  CmdArgs.push_back("-analyzer-checker=cplusplus");
2433 
2434  if (!Triple.isPS4CPU()) {
2435  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");
2436  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
2437  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
2438  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
2439  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
2440  CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
2441  }
2442 
2443  // Default nullability checks.
2444  CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
2445  CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");
2446  }
2447 
2448  // Set the output format. The default is plist, for (lame) historical reasons.
2449  CmdArgs.push_back("-analyzer-output");
2450  if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
2451  CmdArgs.push_back(A->getValue());
2452  else
2453  CmdArgs.push_back("plist");
2454 
2455  // Disable the presentation of standard compiler warnings when using
2456  // --analyze. We only want to show static analyzer diagnostics or frontend
2457  // errors.
2458  CmdArgs.push_back("-w");
2459 
2460  // Add -Xanalyzer arguments when running as analyzer.
2461  Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
2462 }
2463 
2464 static void RenderSSPOptions(const ToolChain &TC, const ArgList &Args,
2465  ArgStringList &CmdArgs, bool KernelOrKext) {
2466  const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
2467 
2468  // NVPTX doesn't support stack protectors; from the compiler's perspective, it
2469  // doesn't even have a stack!
2470  if (EffectiveTriple.isNVPTX())
2471  return;
2472 
2473  // -stack-protector=0 is default.
2474  unsigned StackProtectorLevel = 0;
2475  unsigned DefaultStackProtectorLevel =
2476  TC.GetDefaultStackProtectorLevel(KernelOrKext);
2477 
2478  if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
2479  options::OPT_fstack_protector_all,
2480  options::OPT_fstack_protector_strong,
2481  options::OPT_fstack_protector)) {
2482  if (A->getOption().matches(options::OPT_fstack_protector))
2483  StackProtectorLevel =
2484  std::max<unsigned>(LangOptions::SSPOn, DefaultStackProtectorLevel);
2485  else if (A->getOption().matches(options::OPT_fstack_protector_strong))
2486  StackProtectorLevel = LangOptions::SSPStrong;
2487  else if (A->getOption().matches(options::OPT_fstack_protector_all))
2488  StackProtectorLevel = LangOptions::SSPReq;
2489  } else {
2490  StackProtectorLevel = DefaultStackProtectorLevel;
2491  }
2492 
2493  if (StackProtectorLevel) {
2494  CmdArgs.push_back("-stack-protector");
2495  CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
2496  }
2497 
2498  // --param ssp-buffer-size=
2499  for (const Arg *A : Args.filtered(options::OPT__param)) {
2500  StringRef Str(A->getValue());
2501  if (Str.startswith("ssp-buffer-size=")) {
2502  if (StackProtectorLevel) {
2503  CmdArgs.push_back("-stack-protector-buffer-size");
2504  // FIXME: Verify the argument is a valid integer.
2505  CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
2506  }
2507  A->claim();
2508  }
2509  }
2510 }
2511 
2513  const ToolChain &TC,
2514  const ArgList &Args,
2515  ArgStringList &CmdArgs) {
2516  auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
2517  StringRef TrivialAutoVarInit = "";
2518 
2519  for (const Arg *A : Args) {
2520  switch (A->getOption().getID()) {
2521  default:
2522  continue;
2523  case options::OPT_ftrivial_auto_var_init: {
2524  A->claim();
2525  StringRef Val = A->getValue();
2526  if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
2527  TrivialAutoVarInit = Val;
2528  else
2529  D.Diag(diag::err_drv_unsupported_option_argument)
2530  << A->getOption().getName() << Val;
2531  break;
2532  }
2533  }
2534  }
2535 
2536  if (TrivialAutoVarInit.empty())
2537  switch (DefaultTrivialAutoVarInit) {
2539  break;
2541  TrivialAutoVarInit = "pattern";
2542  break;
2544  TrivialAutoVarInit = "zero";
2545  break;
2546  }
2547 
2548  if (!TrivialAutoVarInit.empty()) {
2549  if (TrivialAutoVarInit == "zero" && !Args.hasArg(options::OPT_enable_trivial_var_init_zero))
2550  D.Diag(diag::err_drv_trivial_auto_var_init_zero_disabled);
2551  CmdArgs.push_back(
2552  Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));
2553  }
2554 }
2555 
2556 static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs) {
2557  const unsigned ForwardedArguments[] = {
2558  options::OPT_cl_opt_disable,
2559  options::OPT_cl_strict_aliasing,
2560  options::OPT_cl_single_precision_constant,
2561  options::OPT_cl_finite_math_only,
2562  options::OPT_cl_kernel_arg_info,
2563  options::OPT_cl_unsafe_math_optimizations,
2564  options::OPT_cl_fast_relaxed_math,
2565  options::OPT_cl_mad_enable,
2566  options::OPT_cl_no_signed_zeros,
2567  options::OPT_cl_denorms_are_zero,
2568  options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
2569  options::OPT_cl_uniform_work_group_size
2570  };
2571 
2572  if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
2573  std::string CLStdStr = std::string("-cl-std=") + A->getValue();
2574  CmdArgs.push_back(Args.MakeArgString(CLStdStr));
2575  }
2576 
2577  for (const auto &Arg : ForwardedArguments)
2578  if (const auto *A = Args.getLastArg(Arg))
2579  CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
2580 }
2581 
2582 static void RenderARCMigrateToolOptions(const Driver &D, const ArgList &Args,
2583  ArgStringList &CmdArgs) {
2584  bool ARCMTEnabled = false;
2585  if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
2586  if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
2587  options::OPT_ccc_arcmt_modify,
2588  options::OPT_ccc_arcmt_migrate)) {
2589  ARCMTEnabled = true;
2590  switch (A->getOption().getID()) {
2591  default: llvm_unreachable("missed a case");
2592  case options::OPT_ccc_arcmt_check:
2593  CmdArgs.push_back("-arcmt-check");
2594  break;
2595  case options::OPT_ccc_arcmt_modify:
2596  CmdArgs.push_back("-arcmt-modify");
2597  break;
2598  case options::OPT_ccc_arcmt_migrate:
2599  CmdArgs.push_back("-arcmt-migrate");
2600  CmdArgs.push_back("-mt-migrate-directory");
2601  CmdArgs.push_back(A->getValue());
2602 
2603  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
2604  Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
2605  break;
2606  }
2607  }
2608  } else {
2609  Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
2610  Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
2611  Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
2612  }
2613 
2614  if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
2615  if (ARCMTEnabled)
2616  D.Diag(diag::err_drv_argument_not_allowed_with)
2617  << A->getAsString(Args) << "-ccc-arcmt-migrate";
2618 
2619  CmdArgs.push_back("-mt-migrate-directory");
2620  CmdArgs.push_back(A->getValue());
2621 
2622  if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
2623  options::OPT_objcmt_migrate_subscripting,
2624  options::OPT_objcmt_migrate_property)) {
2625  // None specified, means enable them all.
2626  CmdArgs.push_back("-objcmt-migrate-literals");
2627  CmdArgs.push_back("-objcmt-migrate-subscripting");
2628  CmdArgs.push_back("-objcmt-migrate-property");
2629  } else {
2630  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2631  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2632  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2633  }
2634  } else {
2635  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
2636  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
2637  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
2638  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
2639  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
2640  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
2641  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
2642  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
2643  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
2644  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
2645  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
2646  Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
2647  Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
2648  Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
2649  Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
2650  Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
2651  }
2652 }
2653 
2654 static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
2655  const ArgList &Args, ArgStringList &CmdArgs) {
2656  // -fbuiltin is default unless -mkernel is used.
2657  bool UseBuiltins =
2658  Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
2659  !Args.hasArg(options::OPT_mkernel));
2660  if (!UseBuiltins)
2661  CmdArgs.push_back("-fno-builtin");
2662 
2663  // -ffreestanding implies -fno-builtin.
2664  if (Args.hasArg(options::OPT_ffreestanding))
2665  UseBuiltins = false;
2666 
2667  // Process the -fno-builtin-* options.
2668  for (const auto &Arg : Args) {
2669  const Option &O = Arg->getOption();
2670  if (!O.matches(options::OPT_fno_builtin_))
2671  continue;
2672 
2673  Arg->claim();
2674 
2675  // If -fno-builtin is specified, then there's no need to pass the option to
2676  // the frontend.
2677  if (!UseBuiltins)
2678  continue;
2679 
2680  StringRef FuncName = Arg->getValue();
2681  CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
2682  }
2683 
2684  // le32-specific flags:
2685  // -fno-math-builtin: clang should not convert math builtins to intrinsics
2686  // by default.
2687  if (TC.getArch() == llvm::Triple::le32)
2688  CmdArgs.push_back("-fno-math-builtin");
2689 }
2690 
2692  llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Result);
2693  llvm::sys::path::append(Result, "org.llvm.clang.");
2694  appendUserToPath(Result);
2695  llvm::sys::path::append(Result, "ModuleCache");
2696 }
2697 
2698 static void RenderModulesOptions(Compilation &C, const Driver &D,
2699  const ArgList &Args, const InputInfo &Input,
2700  const InputInfo &Output,
2701  ArgStringList &CmdArgs, bool &HaveModules) {
2702  // -fmodules enables the use of precompiled modules (off by default).
2703  // Users can pass -fno-cxx-modules to turn off modules support for
2704  // C++/Objective-C++ programs.
2705  bool HaveClangModules = false;
2706  if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
2707  bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
2708  options::OPT_fno_cxx_modules, true);
2709  if (AllowedInCXX || !types::isCXX(Input.getType())) {
2710  CmdArgs.push_back("-fmodules");
2711  HaveClangModules = true;
2712  }
2713  }
2714 
2715  HaveModules |= HaveClangModules;
2716  if (Args.hasArg(options::OPT_fmodules_ts)) {
2717  CmdArgs.push_back("-fmodules-ts");
2718  HaveModules = true;
2719  }
2720 
2721  // -fmodule-maps enables implicit reading of module map files. By default,
2722  // this is enabled if we are using Clang's flavor of precompiled modules.
2723  if (Args.hasFlag(options::OPT_fimplicit_module_maps,
2724  options::OPT_fno_implicit_module_maps, HaveClangModules))
2725  CmdArgs.push_back("-fimplicit-module-maps");
2726 
2727  // -fmodules-decluse checks that modules used are declared so (off by default)
2728  if (Args.hasFlag(options::OPT_fmodules_decluse,
2729  options::OPT_fno_modules_decluse, false))
2730  CmdArgs.push_back("-fmodules-decluse");
2731 
2732  // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
2733  // all #included headers are part of modules.
2734  if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
2735  options::OPT_fno_modules_strict_decluse, false))
2736  CmdArgs.push_back("-fmodules-strict-decluse");
2737 
2738  // -fno-implicit-modules turns off implicitly compiling modules on demand.
2739  bool ImplicitModules = false;
2740  if (!Args.hasFlag(options::OPT_fimplicit_modules,
2741  options::OPT_fno_implicit_modules, HaveClangModules)) {
2742  if (HaveModules)
2743  CmdArgs.push_back("-fno-implicit-modules");
2744  } else if (HaveModules) {
2745  ImplicitModules = true;
2746  // -fmodule-cache-path specifies where our implicitly-built module files
2747  // should be written.
2748  SmallString<128> Path;
2749  if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
2750  Path = A->getValue();
2751 
2752  if (C.isForDiagnostics()) {
2753  // When generating crash reports, we want to emit the modules along with
2754  // the reproduction sources, so we ignore any provided module path.
2755  Path = Output.getFilename();
2756  llvm::sys::path::replace_extension(Path, ".cache");
2757  llvm::sys::path::append(Path, "modules");
2758  } else if (Path.empty()) {
2759  // No module path was provided: use the default.
2761  }
2762 
2763  const char Arg[] = "-fmodules-cache-path=";
2764  Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
2765  CmdArgs.push_back(Args.MakeArgString(Path));
2766  }
2767 
2768  if (HaveModules) {
2769  // -fprebuilt-module-path specifies where to load the prebuilt module files.
2770  for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
2771  CmdArgs.push_back(Args.MakeArgString(
2772  std::string("-fprebuilt-module-path=") + A->getValue()));
2773  A->claim();
2774  }
2775  if (Args.hasFlag(options::OPT_fmodules_validate_input_files_content,
2776  options::OPT_fno_modules_validate_input_files_content,
2777  false))
2778  CmdArgs.push_back("-fvalidate-ast-input-files-content");
2779  }
2780 
2781  // -fmodule-name specifies the module that is currently being built (or
2782  // used for header checking by -fmodule-maps).
2783  Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
2784 
2785  // -fmodule-map-file can be used to specify files containing module
2786  // definitions.
2787  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
2788 
2789  // -fbuiltin-module-map can be used to load the clang
2790  // builtin headers modulemap file.
2791  if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
2792  SmallString<128> BuiltinModuleMap(D.ResourceDir);
2793  llvm::sys::path::append(BuiltinModuleMap, "include");
2794  llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");
2795  if (llvm::sys::fs::exists(BuiltinModuleMap))
2796  CmdArgs.push_back(
2797  Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));
2798  }
2799 
2800  // The -fmodule-file=<name>=<file> form specifies the mapping of module
2801  // names to precompiled module files (the module is loaded only if used).
2802  // The -fmodule-file=<file> form can be used to unconditionally load
2803  // precompiled module files (whether used or not).
2804  if (HaveModules)
2805  Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
2806  else
2807  Args.ClaimAllArgs(options::OPT_fmodule_file);
2808 
2809  // When building modules and generating crashdumps, we need to dump a module
2810  // dependency VFS alongside the output.
2811  if (HaveClangModules && C.isForDiagnostics()) {
2812  SmallString<128> VFSDir(Output.getFilename());
2813  llvm::sys::path::replace_extension(VFSDir, ".cache");
2814  // Add the cache directory as a temp so the crash diagnostics pick it up.
2815  C.addTempFile(Args.MakeArgString(VFSDir));
2816 
2817  llvm::sys::path::append(VFSDir, "vfs");
2818  CmdArgs.push_back("-module-dependency-dir");
2819  CmdArgs.push_back(Args.MakeArgString(VFSDir));
2820  }
2821 
2822  if (HaveClangModules)
2823  Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
2824 
2825  // Pass through all -fmodules-ignore-macro arguments.
2826  Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
2827  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
2828  Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
2829 
2830  Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
2831 
2832  if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
2833  if (Args.hasArg(options::OPT_fbuild_session_timestamp))
2834  D.Diag(diag::err_drv_argument_not_allowed_with)
2835  << A->getAsString(Args) << "-fbuild-session-timestamp";
2836 
2837  llvm::sys::fs::file_status Status;
2838  if (llvm::sys::fs::status(A->getValue(), Status))
2839  D.Diag(diag::err_drv_no_such_file) << A->getValue();
2840  CmdArgs.push_back(
2841  Args.MakeArgString("-fbuild-session-timestamp=" +
2842  Twine((uint64_t)Status.getLastModificationTime()
2843  .time_since_epoch()
2844  .count())));
2845  }
2846 
2847  if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
2848  if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
2849  options::OPT_fbuild_session_file))
2850  D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
2851 
2852  Args.AddLastArg(CmdArgs,
2853  options::OPT_fmodules_validate_once_per_build_session);
2854  }
2855 
2856  if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
2857  options::OPT_fno_modules_validate_system_headers,
2858  ImplicitModules))
2859  CmdArgs.push_back("-fmodules-validate-system-headers");
2860 
2861  Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
2862 }
2863 
2864 static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
2865  ArgStringList &CmdArgs) {
2866  // -fsigned-char is default.
2867  if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
2868  options::OPT_fno_signed_char,
2869  options::OPT_funsigned_char,
2870  options::OPT_fno_unsigned_char)) {
2871  if (A->getOption().matches(options::OPT_funsigned_char) ||
2872  A->getOption().matches(options::OPT_fno_signed_char)) {
2873  CmdArgs.push_back("-fno-signed-char");
2874  }
2875  } else if (!isSignedCharDefault(T)) {
2876  CmdArgs.push_back("-fno-signed-char");
2877  }
2878 
2879  // The default depends on the language standard.
2880  Args.AddLastArg(CmdArgs, options::OPT_fchar8__t, options::OPT_fno_char8__t);
2881 
2882  if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
2883  options::OPT_fno_short_wchar)) {
2884  if (A->getOption().matches(options::OPT_fshort_wchar)) {
2885  CmdArgs.push_back("-fwchar-type=short");
2886  CmdArgs.push_back("-fno-signed-wchar");
2887  } else {
2888  bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
2889  CmdArgs.push_back("-fwchar-type=int");
2890  if (IsARM && !(T.isOSWindows() || T.isOSNetBSD() ||
2891  T.isOSOpenBSD()))
2892  CmdArgs.push_back("-fno-signed-wchar");
2893  else
2894  CmdArgs.push_back("-fsigned-wchar");
2895  }
2896  }
2897 }
2898 
2899 static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
2900  const llvm::Triple &T, const ArgList &Args,
2901  ObjCRuntime &Runtime, bool InferCovariantReturns,
2902  const InputInfo &Input, ArgStringList &CmdArgs) {
2903  const llvm::Triple::ArchType Arch = TC.getArch();
2904 
2905  // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
2906  // is the default. Except for deployment target of 10.5, next runtime is
2907  // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
2908  if (Runtime.isNonFragile()) {
2909  if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
2910  options::OPT_fno_objc_legacy_dispatch,
2911  Runtime.isLegacyDispatchDefaultForArch(Arch))) {
2912  if (TC.UseObjCMixedDispatch())
2913  CmdArgs.push_back("-fobjc-dispatch-method=mixed");
2914  else
2915  CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
2916  }
2917  }
2918 
2919  // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
2920  // to do Array/Dictionary subscripting by default.
2921  if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
2922  Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
2923  CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
2924 
2925  // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
2926  // NOTE: This logic is duplicated in ToolChains.cpp.
2927  if (isObjCAutoRefCount(Args)) {
2928  TC.CheckObjCARC();
2929 
2930  CmdArgs.push_back("-fobjc-arc");
2931 
2932  // FIXME: It seems like this entire block, and several around it should be
2933  // wrapped in isObjC, but for now we just use it here as this is where it
2934  // was being used previously.
2935  if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {
2936  if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2937  CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
2938  else
2939  CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
2940  }
2941 
2942  // Allow the user to enable full exceptions code emission.
2943  // We default off for Objective-C, on for Objective-C++.
2944  if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
2945  options::OPT_fno_objc_arc_exceptions,
2946  /*Default=*/types::isCXX(Input.getType())))
2947  CmdArgs.push_back("-fobjc-arc-exceptions");
2948  }
2949 
2950  // Silence warning for full exception code emission options when explicitly
2951  // set to use no ARC.
2952  if (Args.hasArg(options::OPT_fno_objc_arc)) {
2953  Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
2954  Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
2955  }
2956 
2957  // Allow the user to control whether messages can be converted to runtime
2958  // functions.
2959  if (types::isObjC(Input.getType())) {
2960  auto *Arg = Args.getLastArg(
2961  options::OPT_fobjc_convert_messages_to_runtime_calls,
2962  options::OPT_fno_objc_convert_messages_to_runtime_calls);
2963  if (Arg &&
2964  Arg->getOption().matches(
2965  options::OPT_fno_objc_convert_messages_to_runtime_calls))
2966  CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");
2967  }
2968 
2969  // -fobjc-infer-related-result-type is the default, except in the Objective-C
2970  // rewriter.
2971  if (InferCovariantReturns)
2972  CmdArgs.push_back("-fno-objc-infer-related-result-type");
2973 
2974  // Pass down -fobjc-weak or -fno-objc-weak if present.
2975  if (types::isObjC(Input.getType())) {
2976  auto WeakArg =
2977  Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
2978  if (!WeakArg) {
2979  // nothing to do
2980  } else if (!Runtime.allowsWeak()) {
2981  if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
2982  D.Diag(diag::err_objc_weak_unsupported);
2983  } else {
2984  WeakArg->render(Args, CmdArgs);
2985  }
2986  }
2987 }
2988 
2989 static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
2990  ArgStringList &CmdArgs) {
2991  bool CaretDefault = true;
2992  bool ColumnDefault = true;
2993 
2994  if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
2995  options::OPT__SLASH_diagnostics_column,
2996  options::OPT__SLASH_diagnostics_caret)) {
2997  switch (A->getOption().getID()) {
2998  case options::OPT__SLASH_diagnostics_caret:
2999  CaretDefault = true;
3000  ColumnDefault = true;
3001  break;
3002  case options::OPT__SLASH_diagnostics_column:
3003  CaretDefault = false;
3004  ColumnDefault = true;
3005  break;
3006  case options::OPT__SLASH_diagnostics_classic:
3007  CaretDefault = false;
3008  ColumnDefault = false;
3009  break;
3010  }
3011  }
3012 
3013  // -fcaret-diagnostics is default.
3014  if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
3015  options::OPT_fno_caret_diagnostics, CaretDefault))
3016  CmdArgs.push_back("-fno-caret-diagnostics");
3017 
3018  // -fdiagnostics-fixit-info is default, only pass non-default.
3019  if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
3020  options::OPT_fno_diagnostics_fixit_info))
3021  CmdArgs.push_back("-fno-diagnostics-fixit-info");
3022 
3023  // Enable -fdiagnostics-show-option by default.
3024  if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
3025  options::OPT_fno_diagnostics_show_option))
3026  CmdArgs.push_back("-fdiagnostics-show-option");
3027 
3028  if (const Arg *A =
3029  Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
3030  CmdArgs.push_back("-fdiagnostics-show-category");
3031  CmdArgs.push_back(A->getValue());
3032  }
3033 
3034  if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
3035  options::OPT_fno_diagnostics_show_hotness, false))
3036  CmdArgs.push_back("-fdiagnostics-show-hotness");
3037 
3038  if (const Arg *A =
3039  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
3040  std::string Opt =
3041  std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
3042  CmdArgs.push_back(Args.MakeArgString(Opt));
3043  }
3044 
3045  if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
3046  CmdArgs.push_back("-fdiagnostics-format");
3047  CmdArgs.push_back(A->getValue());
3048  }
3049 
3050  if (const Arg *A = Args.getLastArg(
3051  options::OPT_fdiagnostics_show_note_include_stack,
3052  options::OPT_fno_diagnostics_show_note_include_stack)) {
3053  const Option &O = A->getOption();
3054  if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
3055  CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
3056  else
3057  CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
3058  }
3059 
3060  // Color diagnostics are parsed by the driver directly from argv and later
3061  // re-parsed to construct this job; claim any possible color diagnostic here
3062  // to avoid warn_drv_unused_argument and diagnose bad
3063  // OPT_fdiagnostics_color_EQ values.
3064  for (const Arg *A : Args) {
3065  const Option &O = A->getOption();
3066  if (!O.matches(options::OPT_fcolor_diagnostics) &&
3067  !O.matches(options::OPT_fdiagnostics_color) &&
3068  !O.matches(options::OPT_fno_color_diagnostics) &&
3069  !O.matches(options::OPT_fno_diagnostics_color) &&
3070  !O.matches(options::OPT_fdiagnostics_color_EQ))
3071  continue;
3072 
3073  if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
3074  StringRef Value(A->getValue());
3075  if (Value != "always" && Value != "never" && Value != "auto")
3076  D.Diag(diag::err_drv_clang_unsupported)
3077  << ("-fdiagnostics-color=" + Value).str();
3078  }
3079  A->claim();
3080  }
3081 
3082  if (D.getDiags().getDiagnosticOptions().ShowColors)
3083  CmdArgs.push_back("-fcolor-diagnostics");
3084 
3085  if (Args.hasArg(options::OPT_fansi_escape_codes))
3086  CmdArgs.push_back("-fansi-escape-codes");
3087 
3088  if (!Args.hasFlag(options::OPT_fshow_source_location,
3089  options::OPT_fno_show_source_location))
3090  CmdArgs.push_back("-fno-show-source-location");
3091 
3092  if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
3093  CmdArgs.push_back("-fdiagnostics-absolute-paths");
3094 
3095  if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
3096  ColumnDefault))
3097  CmdArgs.push_back("-fno-show-column");
3098 
3099  if (!Args.hasFlag(options::OPT_fspell_checking,
3100  options::OPT_fno_spell_checking))
3101  CmdArgs.push_back("-fno-spell-checking");
3102 }
3103 
3104 enum class DwarfFissionKind { None, Split, Single };
3105 
3107  const ArgList &Args, Arg *&Arg) {
3108  Arg =
3109  Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ);
3110  if (!Arg)
3111  return DwarfFissionKind::None;
3112 
3113  if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
3114  return DwarfFissionKind::Split;
3115 
3116  StringRef Value = Arg->getValue();
3117  if (Value == "split")
3118  return DwarfFissionKind::Split;
3119  if (Value == "single")
3120  return DwarfFissionKind::Single;
3121 
3122  D.Diag(diag::err_drv_unsupported_option_argument)
3123  << Arg->getOption().getName() << Arg->getValue();
3124  return DwarfFissionKind::None;
3125 }
3126 
3127 static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
3128  const llvm::Triple &T, const ArgList &Args,
3129  bool EmitCodeView, bool IsWindowsMSVC,
3130  ArgStringList &CmdArgs,
3132  DwarfFissionKind &DwarfFission) {
3133  if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
3134  options::OPT_fno_debug_info_for_profiling, false) &&
3136  Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
3137  CmdArgs.push_back("-fdebug-info-for-profiling");
3138 
3139  // The 'g' groups options involve a somewhat intricate sequence of decisions
3140  // about what to pass from the driver to the frontend, but by the time they
3141  // reach cc1 they've been factored into three well-defined orthogonal choices:
3142  // * what level of debug info to generate
3143  // * what dwarf version to write
3144  // * what debugger tuning to use
3145  // This avoids having to monkey around further in cc1 other than to disable
3146  // codeview if not running in a Windows environment. Perhaps even that
3147  // decision should be made in the driver as well though.
3148  unsigned DWARFVersion = 0;
3149  llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
3150 
3151  bool SplitDWARFInlining =
3152  Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
3153  options::OPT_fno_split_dwarf_inlining, true);
3154 
3155  Args.ClaimAllArgs(options::OPT_g_Group);
3156 
3157  Arg* SplitDWARFArg;
3158  DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);
3159 
3160  if (DwarfFission != DwarfFissionKind::None &&
3161  !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {
3162  DwarfFission = DwarfFissionKind::None;
3163  SplitDWARFInlining = false;
3164  }
3165 
3166  if (const Arg *A =
3167  Args.getLastArg(options::OPT_g_Group, options::OPT_gsplit_dwarf,
3168  options::OPT_gsplit_dwarf_EQ)) {
3169  DebugInfoKind = codegenoptions::LimitedDebugInfo;
3170 
3171  // If the last option explicitly specified a debug-info level, use it.
3172  if (checkDebugInfoOption(A, Args, D, TC) &&
3173  A->getOption().matches(options::OPT_gN_Group)) {
3174  DebugInfoKind = DebugLevelToInfoKind(*A);
3175  // For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
3176  // complicated if you've disabled inline info in the skeleton CUs
3177  // (SplitDWARFInlining) - then there's value in composing split-dwarf and
3178  // line-tables-only, so let those compose naturally in that case.
3179  if (DebugInfoKind == codegenoptions::NoDebugInfo ||
3180  DebugInfoKind == codegenoptions::DebugDirectivesOnly ||
3181  (DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
3182  SplitDWARFInlining))
3183  DwarfFission = DwarfFissionKind::None;
3184  }
3185  }
3186 
3187  // If a debugger tuning argument appeared, remember it.
3188  if (const Arg *A =
3189  Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
3190  if (checkDebugInfoOption(A, Args, D, TC)) {
3191  if (A->getOption().matches(options::OPT_glldb))
3192  DebuggerTuning = llvm::DebuggerKind::LLDB;
3193  else if (A->getOption().matches(options::OPT_gsce))
3194  DebuggerTuning = llvm::DebuggerKind::SCE;
3195  else
3196  DebuggerTuning = llvm::DebuggerKind::GDB;
3197  }
3198  }
3199 
3200  // If a -gdwarf argument appeared, remember it.
3201  if (const Arg *A =
3202  Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
3203  options::OPT_gdwarf_4, options::OPT_gdwarf_5))
3204  if (checkDebugInfoOption(A, Args, D, TC))
3205  DWARFVersion = DwarfVersionNum(A->getSpelling());
3206 
3207  if (const Arg *A = Args.getLastArg(options::OPT_gcodeview)) {
3208  if (checkDebugInfoOption(A, Args, D, TC))
3209  EmitCodeView = true;
3210  }
3211 
3212  // If the user asked for debug info but did not explicitly specify -gcodeview
3213  // or -gdwarf, ask the toolchain for the default format.
3214  if (!EmitCodeView && DWARFVersion == 0 &&
3215  DebugInfoKind != codegenoptions::NoDebugInfo) {
3216  switch (TC.getDefaultDebugFormat()) {
3218  EmitCodeView = true;
3219  break;
3221  DWARFVersion = TC.GetDefaultDwarfVersion();
3222  break;
3223  }
3224  }
3225 
3226  // -gline-directives-only supported only for the DWARF debug info.
3227  if (DWARFVersion == 0 && DebugInfoKind == codegenoptions::DebugDirectivesOnly)
3228  DebugInfoKind = codegenoptions::NoDebugInfo;
3229 
3230  // We ignore flag -gstrict-dwarf for now.
3231  // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
3232  Args.ClaimAllArgs(options::OPT_g_flags_Group);
3233 
3234  // Column info is included by default for everything except SCE and
3235  // CodeView. Clang doesn't track end columns, just starting columns, which,
3236  // in theory, is fine for CodeView (and PDB). In practice, however, the
3237  // Microsoft debuggers don't handle missing end columns well, so it's better
3238  // not to include any column info.
3239  if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
3240  (void)checkDebugInfoOption(A, Args, D, TC);
3241  if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
3242  /*Default=*/!EmitCodeView &&
3243  DebuggerTuning != llvm::DebuggerKind::SCE))
3244  CmdArgs.push_back("-dwarf-column-info");
3245 
3246  // FIXME: Move backend command line options to the module.
3247  // If -gline-tables-only or -gline-directives-only is the last option it wins.
3248  if (const Arg *A = Args.getLastArg(options::OPT_gmodules))
3249  if (checkDebugInfoOption(A, Args, D, TC)) {
3250  if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
3251  DebugInfoKind != codegenoptions::DebugDirectivesOnly) {
3252  DebugInfoKind = codegenoptions::LimitedDebugInfo;
3253  CmdArgs.push_back("-dwarf-ext-refs");
3254  CmdArgs.push_back("-fmodule-format=obj");
3255  }
3256  }
3257 
3258  if (T.isOSBinFormatELF() && !SplitDWARFInlining)
3259  CmdArgs.push_back("-fno-split-dwarf-inlining");
3260 
3261  // After we've dealt with all combinations of things that could
3262  // make DebugInfoKind be other than None or DebugLineTablesOnly,
3263  // figure out if we need to "upgrade" it to standalone debug info.
3264  // We parse these two '-f' options whether or not they will be used,
3265  // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
3266  bool NeedFullDebug = Args.hasFlag(
3267  options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,
3268  DebuggerTuning == llvm::DebuggerKind::LLDB ||
3270  if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
3271  (void)checkDebugInfoOption(A, Args, D, TC);
3272  if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
3273  DebugInfoKind = codegenoptions::FullDebugInfo;
3274 
3275  if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
3276  false)) {
3277  // Source embedding is a vendor extension to DWARF v5. By now we have
3278  // checked if a DWARF version was stated explicitly, and have otherwise
3279  // fallen back to the target default, so if this is still not at least 5
3280  // we emit an error.
3281  const Arg *A = Args.getLastArg(options::OPT_gembed_source);
3282  if (DWARFVersion < 5)
3283  D.Diag(diag::err_drv_argument_only_allowed_with)
3284  << A->getAsString(Args) << "-gdwarf-5";
3285  else if (checkDebugInfoOption(A, Args, D, TC))
3286  CmdArgs.push_back("-gembed-source");
3287  }
3288 
3289  if (EmitCodeView) {
3290  CmdArgs.push_back("-gcodeview");
3291 
3292  // Emit codeview type hashes if requested.
3293  if (Args.hasFlag(options::OPT_gcodeview_ghash,
3294  options::OPT_gno_codeview_ghash, false)) {
3295  CmdArgs.push_back("-gcodeview-ghash");
3296  }
3297  }
3298 
3299  // Adjust the debug info kind for the given toolchain.
3300  TC.adjustDebugInfoKind(DebugInfoKind, Args);
3301 
3302  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
3303  DebuggerTuning);
3304 
3305  // -fdebug-macro turns on macro debug info generation.
3306  if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
3307  false))
3308  if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
3309  D, TC))
3310  CmdArgs.push_back("-debug-info-macro");
3311 
3312  // -ggnu-pubnames turns on gnu style pubnames in the backend.
3313  const auto *PubnamesArg =
3314  Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
3315  options::OPT_gpubnames, options::OPT_gno_pubnames);
3316  if (DwarfFission != DwarfFissionKind::None ||
3317  (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
3318  if (!PubnamesArg ||
3319  (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
3320  !PubnamesArg->getOption().matches(options::OPT_gno_pubnames)))
3321  CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
3322  options::OPT_gpubnames)
3323  ? "-gpubnames"
3324  : "-ggnu-pubnames");
3325 
3326  if (Args.hasFlag(options::OPT_fdebug_ranges_base_address,
3327  options::OPT_fno_debug_ranges_base_address, false)) {
3328  CmdArgs.push_back("-fdebug-ranges-base-address");
3329  }
3330 
3331  // -gdwarf-aranges turns on the emission of the aranges section in the
3332  // backend.
3333  // Always enabled for SCE tuning.
3334  bool NeedAranges = DebuggerTuning == llvm::DebuggerKind::SCE;
3335  if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges))
3336  NeedAranges = checkDebugInfoOption(A, Args, D, TC) || NeedAranges;
3337  if (NeedAranges) {
3338  CmdArgs.push_back("-mllvm");
3339  CmdArgs.push_back("-generate-arange-section");
3340  }
3341 
3342  if (Args.hasFlag(options::OPT_fdebug_types_section,
3343  options::OPT_fno_debug_types_section, false)) {
3344  if (!T.isOSBinFormatELF()) {
3345  D.Diag(diag::err_drv_unsupported_opt_for_target)
3346  << Args.getLastArg(options::OPT_fdebug_types_section)
3347  ->getAsString(Args)
3348  << T.getTriple();
3349  } else if (checkDebugInfoOption(
3350  Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
3351  TC)) {
3352  CmdArgs.push_back("-mllvm");
3353  CmdArgs.push_back("-generate-type-units");
3354  }
3355  }
3356 
3357  // Decide how to render forward declarations of template instantiations.
3358  // SCE wants full descriptions, others just get them in the name.
3359  if (DebuggerTuning == llvm::DebuggerKind::SCE)
3360  CmdArgs.push_back("-debug-forward-template-params");
3361 
3362  // Do we need to explicitly import anonymous namespaces into the parent
3363  // scope?
3364  if (DebuggerTuning == llvm::DebuggerKind::SCE)
3365  CmdArgs.push_back("-dwarf-explicit-import");
3366 
3367  RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
3368 }
3369 
3371  const InputInfo &Output, const InputInfoList &Inputs,
3372  const ArgList &Args, const char *LinkingOutput) const {
3373  const auto &TC = getToolChain();
3374  const llvm::Triple &RawTriple = TC.getTriple();
3375  const llvm::Triple &Triple = TC.getEffectiveTriple();
3376  const std::string &TripleStr = Triple.getTriple();
3377 
3378  bool KernelOrKext =
3379  Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
3380  const Driver &D = TC.getDriver();
3381  ArgStringList CmdArgs;
3382 
3383  // Check number of inputs for sanity. We need at least one input.
3384  assert(Inputs.size() >= 1 && "Must have at least one input.");
3385  // CUDA/HIP compilation may have multiple inputs (source file + results of
3386  // device-side compilations). OpenMP device jobs also take the host IR as a
3387  // second input. Module precompilation accepts a list of header files to
3388  // include as part of the module. All other jobs are expected to have exactly
3389  // one input.
3390  bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
3391  bool IsHIP = JA.isOffloading(Action::OFK_HIP);
3392  bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);
3393  bool IsHeaderModulePrecompile = isa<HeaderModulePrecompileJobAction>(JA);
3394 
3395  // A header module compilation doesn't have a main input file, so invent a
3396  // fake one as a placeholder.
3397  const char *ModuleName = [&]{
3398  auto *ModuleNameArg = Args.getLastArg(options::OPT_fmodule_name_EQ);
3399  return ModuleNameArg ? ModuleNameArg->getValue() : "";
3400  }();
3401  InputInfo HeaderModuleInput(Inputs[0].getType(), ModuleName, ModuleName);
3402 
3403  const InputInfo &Input =
3404  IsHeaderModulePrecompile ? HeaderModuleInput : Inputs[0];
3405 
3406  InputInfoList ModuleHeaderInputs;
3407  const InputInfo *CudaDeviceInput = nullptr;
3408  const InputInfo *OpenMPDeviceInput = nullptr;
3409  for (const InputInfo &I : Inputs) {
3410  if (&I == &Input) {
3411  // This is the primary input.
3412  } else if (IsHeaderModulePrecompile &&
3413  types::getPrecompiledType(I.getType()) == types::TY_PCH) {
3414  types::ID Expected = HeaderModuleInput.getType();
3415  if (I.getType() != Expected) {
3416  D.Diag(diag::err_drv_module_header_wrong_kind)
3417  << I.getFilename() << types::getTypeName(I.getType())
3418  << types::getTypeName(Expected);
3419  }
3420  ModuleHeaderInputs.push_back(I);
3421  } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
3422  CudaDeviceInput = &I;
3423  } else if (IsOpenMPDevice && !OpenMPDeviceInput) {
3424  OpenMPDeviceInput = &I;
3425  } else {
3426  llvm_unreachable("unexpectedly given multiple inputs");
3427  }
3428  }
3429 
3430  const llvm::Triple *AuxTriple = IsCuda ? TC.getAuxTriple() : nullptr;
3431  bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
3432  bool IsIAMCU = RawTriple.isOSIAMCU();
3433 
3434  // Adjust IsWindowsXYZ for CUDA/HIP compilations. Even when compiling in
3435  // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
3436  // Windows), we need to pass Windows-specific flags to cc1.
3437  if (IsCuda || IsHIP)
3438  IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
3439 
3440  // C++ is not supported for IAMCU.
3441  if (IsIAMCU && types::isCXX(Input.getType()))
3442  D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
3443 
3444  // Invoke ourselves in -cc1 mode.
3445  //
3446  // FIXME: Implement custom jobs for internal actions.
3447  CmdArgs.push_back("-cc1");
3448 
3449  // Add the "effective" target triple.
3450  CmdArgs.push_back("-triple");
3451  CmdArgs.push_back(Args.MakeArgString(TripleStr));
3452 
3453  if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
3454  DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);
3455  Args.ClaimAllArgs(options::OPT_MJ);
3456  } else if (const Arg *GenCDBFragment =
3457  Args.getLastArg(options::OPT_gen_cdb_fragment_path)) {
3458  DumpCompilationDatabaseFragmentToDir(GenCDBFragment->getValue(), C,
3459  TripleStr, Output, Input, Args);
3460  Args.ClaimAllArgs(options::OPT_gen_cdb_fragment_path);
3461  }
3462 
3463  if (IsCuda || IsHIP) {
3464  // We have to pass the triple of the host if compiling for a CUDA/HIP device
3465  // and vice-versa.
3466  std::string NormalizedTriple;
3469  NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
3470  ->getTriple()
3471  .normalize();
3472  else {
3473  // Host-side compilation.
3474  NormalizedTriple =
3477  ->getTriple()
3478  .normalize();
3479  if (IsCuda) {
3480  // We need to figure out which CUDA version we're compiling for, as that
3481  // determines how we load and launch GPU kernels.
3482  auto *CTC = static_cast<const toolchains::CudaToolChain *>(
3484  assert(CTC && "Expected valid CUDA Toolchain.");
3485  if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
3486  CmdArgs.push_back(Args.MakeArgString(
3487  Twine("-target-sdk-version=") +
3488  CudaVersionToString(CTC->CudaInstallation.version())));
3489  }
3490  }
3491  CmdArgs.push_back("-aux-triple");
3492  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3493  }
3494 
3495  if (IsOpenMPDevice) {
3496  // We have to pass the triple of the host if compiling for an OpenMP device.
3497  std::string NormalizedTriple =
3499  ->getTriple()
3500  .normalize();
3501  CmdArgs.push_back("-aux-triple");
3502  CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
3503  }
3504 
3505  if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
3506  Triple.getArch() == llvm::Triple::thumb)) {
3507  unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
3508  unsigned Version;
3509  Triple.getArchName().substr(Offset).getAsInteger(10, Version);
3510  if (Version < 7)
3511  D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
3512  << TripleStr;
3513  }
3514 
3515  // Push all default warning arguments that are specific to
3516  // the given target. These come before user provided warning options
3517  // are provided.
3518  TC.addClangWarningOptions(CmdArgs);
3519 
3520  // Select the appropriate action.
3521  RewriteKind rewriteKind = RK_None;
3522 
3523  // If CollectArgsForIntegratedAssembler() isn't called below, claim the args
3524  // it claims when not running an assembler. Otherwise, clang would emit
3525  // "argument unused" warnings for assembler flags when e.g. adding "-E" to
3526  // flags while debugging something. That'd be somewhat inconvenient, and it's
3527  // also inconsistent with most other flags -- we don't warn on
3528  // -ffunction-sections not being used in -E mode either for example, even
3529  // though it's not really used either.
3530  if (!isa<AssembleJobAction>(JA)) {
3531  // The args claimed here should match the args used in
3532  // CollectArgsForIntegratedAssembler().
3533  if (TC.useIntegratedAs()) {
3534  Args.ClaimAllArgs(options::OPT_mrelax_all);
3535  Args.ClaimAllArgs(options::OPT_mno_relax_all);
3536  Args.ClaimAllArgs(options::OPT_mincremental_linker_compatible);
3537  Args.ClaimAllArgs(options::OPT_mno_incremental_linker_compatible);
3538  switch (C.getDefaultToolChain().getArch()) {
3539  case llvm::Triple::arm:
3540  case llvm::Triple::armeb:
3541  case llvm::Triple::thumb:
3542  case llvm::Triple::thumbeb:
3543  Args.ClaimAllArgs(options::OPT_mimplicit_it_EQ);
3544  break;
3545  default:
3546  break;
3547  }
3548  }
3549  Args.ClaimAllArgs(options::OPT_Wa_COMMA);
3550  Args.ClaimAllArgs(options::OPT_Xassembler);
3551  }
3552 
3553  if (isa<AnalyzeJobAction>(JA)) {
3554  assert(JA.getType() == types::TY_Plist && "Invalid output type.");
3555  CmdArgs.push_back("-analyze");
3556  } else if (isa<MigrateJobAction>(JA)) {
3557  CmdArgs.push_back("-migrate");
3558  } else if (isa<PreprocessJobAction>(JA)) {
3559  if (Output.getType() == types::TY_Dependencies)
3560  CmdArgs.push_back("-Eonly");
3561  else {
3562  CmdArgs.push_back("-E");
3563  if (Args.hasArg(options::OPT_rewrite_objc) &&
3564  !Args.hasArg(options::OPT_g_Group))
3565  CmdArgs.push_back("-P");
3566  }
3567  } else if (isa<AssembleJobAction>(JA)) {
3568  CmdArgs.push_back("-emit-obj");
3569 
3570  CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
3571 
3572  // Also ignore explicit -force_cpusubtype_ALL option.
3573  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
3574  } else if (isa<PrecompileJobAction>(JA)) {
3575  if (JA.getType() == types::TY_Nothing)
3576  CmdArgs.push_back("-fsyntax-only");
3577  else if (JA.getType() == types::TY_ModuleFile)
3578  CmdArgs.push_back(IsHeaderModulePrecompile
3579  ? "-emit-header-module"
3580  : "-emit-module-interface");
3581  else
3582  CmdArgs.push_back("-emit-pch");
3583  } else if (isa<VerifyPCHJobAction>(JA)) {
3584  CmdArgs.push_back("-verify-pch");
3585  } else {
3586  assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
3587  "Invalid action for clang tool.");
3588  if (JA.getType() == types::TY_Nothing) {
3589  CmdArgs.push_back("-fsyntax-only");
3590  } else if (JA.getType() == types::TY_LLVM_IR ||
3591  JA.getType() == types::TY_LTO_IR) {
3592  CmdArgs.push_back("-emit-llvm");
3593  } else if (JA.getType() == types::TY_LLVM_BC ||
3594  JA.getType() == types::TY_LTO_BC) {
3595  CmdArgs.push_back("-emit-llvm-bc");
3596  } else if (JA.getType() == types::TY_IFS ||
3597  JA.getType() == types::TY_IFS_CPP) {
3598  StringRef ArgStr =
3599  Args.hasArg(options::OPT_interface_stub_version_EQ)
3600  ? Args.getLastArgValue(options::OPT_interface_stub_version_EQ)
3601  : "experimental-ifs-v1";
3602  CmdArgs.push_back("-emit-interface-stubs");
3603  CmdArgs.push_back(
3604  Args.MakeArgString(Twine("-interface-stub-version=") + ArgStr.str()));
3605  } else if (JA.getType() == types::TY_PP_Asm) {
3606  CmdArgs.push_back("-S");
3607  } else if (JA.getType() == types::TY_AST) {
3608  CmdArgs.push_back("-emit-pch");
3609  } else if (JA.getType() == types::TY_ModuleFile) {
3610  CmdArgs.push_back("-module-file-info");
3611  } else if (JA.getType() == types::TY_RewrittenObjC) {
3612  CmdArgs.push_back("-rewrite-objc");
3613  rewriteKind = RK_NonFragile;
3614  } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
3615  CmdArgs.push_back("-rewrite-objc");
3616  rewriteKind = RK_Fragile;
3617  } else {
3618  assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
3619  }
3620 
3621  // Preserve use-list order by default when emitting bitcode, so that
3622  // loading the bitcode up in 'opt' or 'llc' and running passes gives the
3623  // same result as running passes here. For LTO, we don't need to preserve
3624  // the use-list order, since serialization to bitcode is part of the flow.
3625  if (JA.getType() == types::TY_LLVM_BC)
3626  CmdArgs.push_back("-emit-llvm-uselists");
3627 
3628  // Device-side jobs do not support LTO.
3629  bool isDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||
3631 
3632  if (D.isUsingLTO() && !isDeviceOffloadAction) {
3633  Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
3634  CmdArgs.push_back("-flto-unit");
3635  }
3636  }
3637 
3638  if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
3639  if (!types::isLLVMIR(Input.getType()))
3640  D.Diag(diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);
3641  Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
3642  }
3643 
3644  if (Args.getLastArg(options::OPT_save_temps_EQ))
3645  Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
3646 
3647  // Embed-bitcode option.
3648  // Only white-listed flags below are allowed to be embedded.
3649  if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() &&
3650  (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
3651  // Add flags implied by -fembed-bitcode.
3652  Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
3653  // Disable all llvm IR level optimizations.
3654  CmdArgs.push_back("-disable-llvm-passes");
3655 
3656  // Render target options such as -fuse-init-array on modern ELF platforms.
3657  TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
3658 
3659  // reject options that shouldn't be supported in bitcode
3660  // also reject kernel/kext
3661  static const constexpr unsigned kBitcodeOptionBlacklist[] = {
3662  options::OPT_mkernel,
3663  options::OPT_fapple_kext,
3664  options::OPT_ffunction_sections,
3665  options::OPT_fno_function_sections,
3666  options::OPT_fdata_sections,
3667  options::OPT_fno_data_sections,
3668  options::OPT_funique_section_names,
3669  options::OPT_fno_unique_section_names,
3670  options::OPT_mrestrict_it,
3671  options::OPT_mno_restrict_it,
3672  options::OPT_mstackrealign,
3673  options::OPT_mno_stackrealign,
3674  options::OPT_mstack_alignment,
3675  options::OPT_mcmodel_EQ,
3676  options::OPT_mlong_calls,
3677  options::OPT_mno_long_calls,
3678  options::OPT_ggnu_pubnames,
3679  options::OPT_gdwarf_aranges,
3680  options::OPT_fdebug_types_section,
3681  options::OPT_fno_debug_types_section,
3682  options::OPT_fdwarf_directory_asm,
3683  options::OPT_fno_dwarf_directory_asm,
3684  options::OPT_mrelax_all,
3685  options::OPT_mno_relax_all,
3686  options::OPT_ftrap_function_EQ,
3687  options::OPT_ffixed_r9,
3688  options::OPT_mfix_cortex_a53_835769,
3689  options::OPT_mno_fix_cortex_a53_835769,
3690  options::OPT_ffixed_x18,
3691  options::OPT_mglobal_merge,
3692  options::OPT_mno_global_merge,
3693  options::OPT_mred_zone,
3694  options::OPT_mno_red_zone,
3695  options::OPT_Wa_COMMA,
3696  options::OPT_Xassembler,
3697  options::OPT_mllvm,
3698  };
3699  for (const auto &A : Args)
3700  if (llvm::find(kBitcodeOptionBlacklist, A->getOption().getID()) !=
3701  std::end(kBitcodeOptionBlacklist))
3702  D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
3703 
3704  // Render the CodeGen options that need to be passed.
3705  if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3706  options::OPT_fno_optimize_sibling_calls))
3707  CmdArgs.push_back("-mdisable-tail-calls");
3708 
3710  CmdArgs);
3711 
3712  // Render ABI arguments
3713  switch (TC.getArch()) {
3714  default: break;
3715  case llvm::Triple::arm:
3716  case llvm::Triple::armeb:
3717  case llvm::Triple::thumbeb:
3718  RenderARMABI(Triple, Args, CmdArgs);
3719  break;
3720  case llvm::Triple::aarch64:
3721  case llvm::Triple::aarch64_be:
3722  RenderAArch64ABI(Triple, Args, CmdArgs);
3723  break;
3724  }
3725 
3726  // Optimization level for CodeGen.
3727  if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
3728  if (A->getOption().matches(options::OPT_O4)) {
3729  CmdArgs.push_back("-O3");
3730  D.Diag(diag::warn_O4_is_O3);
3731  } else {
3732  A->render(Args, CmdArgs);
3733  }
3734  }
3735 
3736  // Input/Output file.
3737  if (Output.getType() == types::TY_Dependencies) {
3738  // Handled with other dependency code.
3739  } else if (Output.isFilename()) {
3740  CmdArgs.push_back("-o");
3741  CmdArgs.push_back(Output.getFilename());
3742  } else {
3743  assert(Output.isNothing() && "Input output.");
3744  }
3745 
3746  for (const auto &II : Inputs) {
3747  addDashXForInput(Args, II, CmdArgs);
3748  if (II.isFilename())
3749  CmdArgs.push_back(II.getFilename());
3750  else
3751  II.getInputArg().renderAsInput(Args, CmdArgs);
3752  }
3753 
3754  C.addCommand(std::make_unique<Command>(JA, *this, D.getClangProgramPath(),
3755  CmdArgs, Inputs));
3756  return;
3757  }
3758 
3760  CmdArgs.push_back("-fembed-bitcode=marker");
3761 
3762  // We normally speed up the clang process a bit by skipping destructors at
3763  // exit, but when we're generating diagnostics we can rely on some of the
3764  // cleanup.
3765  if (!C.isForDiagnostics())
3766  CmdArgs.push_back("-disable-free");
3767 
3768 #ifdef NDEBUG
3769  const bool IsAssertBuild = false;
3770 #else
3771  const bool IsAssertBuild = true;
3772 #endif
3773 
3774  // Disable the verification pass in -asserts builds.
3775  if (!IsAssertBuild)
3776  CmdArgs.push_back("-disable-llvm-verifier");
3777 
3778  // Discard value names in assert builds unless otherwise specified.
3779  if (Args.hasFlag(options::OPT_fdiscard_value_names,
3780  options::OPT_fno_discard_value_names, !IsAssertBuild))
3781  CmdArgs.push_back("-discard-value-names");
3782 
3783  // Set the main file name, so that debug info works even with
3784  // -save-temps.
3785  CmdArgs.push_back("-main-file-name");
3786  CmdArgs.push_back(getBaseInputName(Args, Input));
3787 
3788  // Some flags which affect the language (via preprocessor
3789  // defines).
3790  if (Args.hasArg(options::OPT_static))
3791  CmdArgs.push_back("-static-define");
3792 
3793  if (Args.hasArg(options::OPT_municode))
3794  CmdArgs.push_back("-DUNICODE");
3795 
3796  if (isa<AnalyzeJobAction>(JA))
3797  RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
3798 
3799  if (isa<AnalyzeJobAction>(JA) ||
3800  (isa<PreprocessJobAction>(JA) && Args.hasArg(options::OPT__analyze)))
3801  CmdArgs.push_back("-setup-static-analyzer");
3802 
3803  // Enable compatilibily mode to avoid analyzer-config related errors.
3804  // Since we can't access frontend flags through hasArg, let's manually iterate
3805  // through them.
3806  bool FoundAnalyzerConfig = false;
3807  for (auto Arg : Args.filtered(options::OPT_Xclang))
3808  if (StringRef(Arg->getValue()) == "-analyzer-config") {
3809  FoundAnalyzerConfig = true;
3810  break;
3811  }
3812  if (!FoundAnalyzerConfig)
3813  for (auto Arg : Args.filtered(options::OPT_Xanalyzer))
3814  if (StringRef(Arg->getValue()) == "-analyzer-config") {
3815  FoundAnalyzerConfig = true;
3816  break;
3817  }
3818  if (FoundAnalyzerConfig)
3819  CmdArgs.push_back("-analyzer-config-compatibility-mode=true");
3820 
3821  CheckCodeGenerationOptions(D, Args);
3822 
3823  unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
3824  assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
3825  if (FunctionAlignment) {
3826  CmdArgs.push_back("-function-alignment");
3827  CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));
3828  }
3829 
3830  llvm::Reloc::Model RelocationModel;
3831  unsigned PICLevel;
3832  bool IsPIE;
3833  std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);
3834 
3835  const char *RMName = RelocationModelName(RelocationModel);
3836 
3837  if ((RelocationModel == llvm::Reloc::ROPI ||
3838  RelocationModel == llvm::Reloc::ROPI_RWPI) &&
3839  types::isCXX(Input.getType()) &&
3840  !Args.hasArg(options::OPT_fallow_unsupported))
3841  D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
3842 
3843  if (RMName) {
3844  CmdArgs.push_back("-mrelocation-model");
3845  CmdArgs.push_back(RMName);
3846  }
3847  if (PICLevel > 0) {
3848  CmdArgs.push_back("-pic-level");
3849  CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
3850  if (IsPIE)
3851  CmdArgs.push_back("-pic-is-pie");
3852  }
3853 
3854  if (RelocationModel == llvm::Reloc::ROPI ||
3855  RelocationModel == llvm::Reloc::ROPI_RWPI)
3856  CmdArgs.push_back("-fropi");
3857  if (RelocationModel == llvm::Reloc::RWPI ||
3858  RelocationModel == llvm::Reloc::ROPI_RWPI)
3859  CmdArgs.push_back("-frwpi");
3860 
3861  if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
3862  CmdArgs.push_back("-meabi");
3863  CmdArgs.push_back(A->getValue());
3864  }
3865 
3866  CmdArgs.push_back("-mthread-model");
3867  if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
3868  if (!TC.isThreadModelSupported(A->getValue()))
3869  D.Diag(diag::err_drv_invalid_thread_model_for_target)
3870  << A->getValue() << A->getAsString(Args);
3871  CmdArgs.push_back(A->getValue());
3872  }
3873  else
3874  CmdArgs.push_back(Args.MakeArgString(TC.getThreadModel()));
3875 
3876  Args.AddLastArg(CmdArgs, options::OPT_fveclib);
3877 
3878  if (Args.hasFlag(options::OPT_fmerge_all_constants,
3879  options::OPT_fno_merge_all_constants, false))
3880  CmdArgs.push_back("-fmerge-all-constants");
3881 
3882  if (Args.hasFlag(options::OPT_fno_delete_null_pointer_checks,
3883  options::OPT_fdelete_null_pointer_checks, false))
3884  CmdArgs.push_back("-fno-delete-null-pointer-checks");
3885 
3886  // LLVM Code Generator Options.
3887 
3888  if (Args.hasArg(options::OPT_frewrite_map_file) ||
3889  Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
3890  for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
3891  options::OPT_frewrite_map_file_EQ)) {
3892  StringRef Map = A->getValue();
3893  if (!llvm::sys::fs::exists(Map)) {
3894  D.Diag(diag::err_drv_no_such_file) << Map;
3895  } else {
3896  CmdArgs.push_back("-frewrite-map-file");
3897  CmdArgs.push_back(A->getValue());
3898  A->claim();
3899  }
3900  }
3901  }
3902 
3903  if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
3904  StringRef v = A->getValue();
3905  CmdArgs.push_back("-mllvm");
3906  CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
3907  A->claim();
3908  }
3909 
3910  if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
3911  true))
3912  CmdArgs.push_back("-fno-jump-tables");
3913 
3914  if (Args.hasFlag(options::OPT_fprofile_sample_accurate,
3915  options::OPT_fno_profile_sample_accurate, false))
3916  CmdArgs.push_back("-fprofile-sample-accurate");
3917 
3918  if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
3919  options::OPT_fno_preserve_as_comments, true))
3920  CmdArgs.push_back("-fno-preserve-as-comments");
3921 
3922  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
3923  CmdArgs.push_back("-mregparm");
3924  CmdArgs.push_back(A->getValue());
3925  }
3926 
3927  if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
3928  options::OPT_freg_struct_return)) {
3929  if (TC.getArch() != llvm::Triple::x86) {
3930  D.Diag(diag::err_drv_unsupported_opt_for_target)
3931  << A->getSpelling() << RawTriple.str();
3932  } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
3933  CmdArgs.push_back("-fpcc-struct-return");
3934  } else {
3935  assert(A->getOption().matches(options::OPT_freg_struct_return));
3936  CmdArgs.push_back("-freg-struct-return");
3937  }
3938  }
3939 
3940  if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
3941  CmdArgs.push_back("-fdefault-calling-conv=stdcall");
3942 
3944  getFramePointerKind(Args, RawTriple);
3945  const char *FPKeepKindStr = nullptr;
3946  switch (FPKeepKind) {
3948  FPKeepKindStr = "-mframe-pointer=none";
3949  break;
3951  FPKeepKindStr = "-mframe-pointer=non-leaf";
3952  break;
3954  FPKeepKindStr = "-mframe-pointer=all";
3955  break;
3956  }
3957  assert(FPKeepKindStr && "unknown FramePointerKind");
3958  CmdArgs.push_back(FPKeepKindStr);
3959 
3960  if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
3961  options::OPT_fno_zero_initialized_in_bss))
3962  CmdArgs.push_back("-mno-zero-initialized-in-bss");
3963 
3964  bool OFastEnabled = isOptimizationLevelFast(Args);
3965  // If -Ofast is the optimization level, then -fstrict-aliasing should be
3966  // enabled. This alias option is being used to simplify the hasFlag logic.
3967  OptSpecifier StrictAliasingAliasOption =
3968  OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
3969  // We turn strict aliasing off by default if we're in CL mode, since MSVC
3970  // doesn't do any TBAA.
3971  bool TBAAOnByDefault = !D.IsCLMode();
3972  if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
3973  options::OPT_fno_strict_aliasing, TBAAOnByDefault))
3974  CmdArgs.push_back("-relaxed-aliasing");
3975  if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
3976  options::OPT_fno_struct_path_tbaa))
3977  CmdArgs.push_back("-no-struct-path-tbaa");
3978  if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
3979  false))
3980  CmdArgs.push_back("-fstrict-enums");
3981  if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return,
3982  true))
3983  CmdArgs.push_back("-fno-strict-return");
3984  if (Args.hasFlag(options::OPT_fallow_editor_placeholders,
3985  options::OPT_fno_allow_editor_placeholders, false))
3986  CmdArgs.push_back("-fallow-editor-placeholders");
3987  if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
3988  options::OPT_fno_strict_vtable_pointers,
3989  false))
3990  CmdArgs.push_back("-fstrict-vtable-pointers");
3991  if (Args.hasFlag(options::OPT_fforce_emit_vtables,
3992  options::OPT_fno_force_emit_vtables,
3993  false))
3994  CmdArgs.push_back("-fforce-emit-vtables");
3995  if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
3996  options::OPT_fno_optimize_sibling_calls))
3997  CmdArgs.push_back("-mdisable-tail-calls");
3998  if (Args.hasFlag(options::OPT_fno_escaping_block_tail_calls,
3999  options::OPT_fescaping_block_tail_calls, false))
4000  CmdArgs.push_back("-fno-escaping-block-tail-calls");
4001 
4002  Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
4003  options::OPT_fno_fine_grained_bitfield_accesses);
4004 
4005  // Handle segmented stacks.
4006  if (Args.hasArg(options::OPT_fsplit_stack))
4007  CmdArgs.push_back("-split-stacks");
4008 
4009  RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs);
4010 
4011  if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) {
4012  if (TC.getArch() == llvm::Triple::x86 ||
4013  TC.getArch() == llvm::Triple::x86_64)
4014  A->render(Args, CmdArgs);
4015  else if ((TC.getArch() == llvm::Triple::ppc || TC.getTriple().isPPC64()) &&
4016  (A->getOption().getID() != options::OPT_mlong_double_80))
4017  A->render(Args, CmdArgs);
4018  else
4019  D.Diag(diag::err_drv_unsupported_opt_for_target)
4020  << A->getAsString(Args) << TripleStr;
4021  }
4022 
4023  // Decide whether to use verbose asm. Verbose assembly is the default on
4024  // toolchains which have the integrated assembler on by default.
4025  bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
4026  if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
4027  IsIntegratedAssemblerDefault))
4028  CmdArgs.push_back("-masm-verbose");
4029 
4030  if (!TC.useIntegratedAs())
4031  CmdArgs.push_back("-no-integrated-as");
4032 
4033  if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
4034  CmdArgs.push_back("-mdebug-pass");
4035  CmdArgs.push_back("Structure");
4036  }
4037  if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
4038  CmdArgs.push_back("-mdebug-pass");
4039  CmdArgs.push_back("Arguments");
4040  }
4041 
4042  // Enable -mconstructor-aliases except on darwin, where we have to work around
4043  // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
4044  // aliases aren't supported.
4045  if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
4046  CmdArgs.push_back("-mconstructor-aliases");
4047 
4048  // Darwin's kernel doesn't support guard variables; just die if we
4049  // try to use them.
4050  if (KernelOrKext && RawTriple.isOSDarwin())
4051  CmdArgs.push_back("-fforbid-guard-variables");
4052 
4053  if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
4054  false)) {
4055  CmdArgs.push_back("-mms-bitfields");
4056  }
4057 
4058  if (Args.hasFlag(options::OPT_mpie_copy_relocations,
4059  options::OPT_mno_pie_copy_relocations,
4060  false)) {
4061  CmdArgs.push_back("-mpie-copy-relocations");
4062  }
4063 
4064  if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
4065  CmdArgs.push_back("-fno-plt");
4066  }
4067 
4068  // -fhosted is default.
4069  // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
4070  // use Freestanding.
4071  bool Freestanding =
4072  Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
4073  KernelOrKext;
4074  if (Freestanding)
4075  CmdArgs.push_back("-ffreestanding");
4076 
4077  // This is a coarse approximation of what llvm-gcc actually does, both
4078  // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
4079  // complicated ways.
4080  bool AsynchronousUnwindTables =
4081  Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
4082  options::OPT_fno_asynchronous_unwind_tables,
4083  (TC.IsUnwindTablesDefault(Args) ||
4084  TC.getSanitizerArgs().needsUnwindTables()) &&
4085  !Freestanding);
4086  if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
4087  AsynchronousUnwindTables))
4088  CmdArgs.push_back("-munwind-tables");
4089 
4090  TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());
4091 
4092  // FIXME: Handle -mtune=.
4093  (void)Args.hasArg(options::OPT_mtune_EQ);
4094 
4095  if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
4096  CmdArgs.push_back("-mcode-model");
4097  CmdArgs.push_back(A->getValue());
4098  }
4099 
4100  // Add the target cpu
4101  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
4102  if (!CPU.empty()) {
4103  CmdArgs.push_back("-target-cpu");
4104  CmdArgs.push_back(Args.MakeArgString(CPU));
4105  }
4106 
4107  RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);
4108 
4109  // These two are potentially updated by AddClangCLArgs.
4111  bool EmitCodeView = false;
4112 
4113  // Add clang-cl arguments.
4114  types::ID InputType = Input.getType();
4115  if (D.IsCLMode())
4116  AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
4117 
4118  DwarfFissionKind DwarfFission;
4119  RenderDebugOptions(TC, D, RawTriple, Args, EmitCodeView, IsWindowsMSVC,
4120  CmdArgs, DebugInfoKind, DwarfFission);
4121 
4122  // Add the split debug info name to the command lines here so we
4123  // can propagate it to the backend.
4124  bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
4125  TC.getTriple().isOSBinFormatELF() &&
4126  (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
4127  isa<BackendJobAction>(JA));
4128  if (SplitDWARF) {
4129  const char *SplitDWARFOut = SplitDebugName(Args, Input, Output);
4130  CmdArgs.push_back("-split-dwarf-file");
4131  CmdArgs.push_back(SplitDWARFOut);
4132  if (DwarfFission == DwarfFissionKind::Split) {
4133  CmdArgs.push_back("-split-dwarf-output");
4134  CmdArgs.push_back(SplitDWARFOut);
4135  }
4136  }
4137 
4138  // Pass the linker version in use.
4139  if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
4140  CmdArgs.push_back("-target-linker-version");
4141  CmdArgs.push_back(A->getValue());
4142  }
4143 
4144  // Explicitly error on some things we know we don't support and can't just
4145  // ignore.
4146  if (!Args.hasArg(options::OPT_fallow_unsupported)) {
4147  Arg *Unsupported;
4148  if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&
4149  TC.getArch() == llvm::Triple::x86) {
4150  if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
4151  (Unsupported = Args.getLastArg(options::OPT_mkernel)))
4152  D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
4153  << Unsupported->getOption().getName();
4154  }
4155  // The faltivec option has been superseded by the maltivec option.
4156  if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
4157  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4158  << Unsupported->getOption().getName()
4159  << "please use -maltivec and include altivec.h explicitly";
4160  if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
4161  D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
4162  << Unsupported->getOption().getName() << "please use -mno-altivec";
4163  }
4164 
4165  Args.AddAllArgs(CmdArgs, options::OPT_v);
4166  Args.AddLastArg(CmdArgs, options::OPT_H);
4167  if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
4168  CmdArgs.push_back("-header-include-file");
4169  CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
4170  : "-");
4171  }
4172  Args.AddLastArg(CmdArgs, options::OPT_P);
4173  Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
4174 
4175  if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
4176  CmdArgs.push_back("-diagnostic-log-file");
4177  CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
4178  : "-");
4179  }
4180 
4181  bool UseSeparateSections = isUseSeparateSections(Triple);
4182 
4183  if (Args.hasFlag(options::OPT_ffunction_sections,
4184  options::OPT_fno_function_sections, UseSeparateSections)) {
4185  CmdArgs.push_back("-ffunction-sections");
4186  }
4187 
4188  if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
4189  UseSeparateSections)) {
4190  CmdArgs.push_back("-fdata-sections");
4191  }
4192 
4193  if (!Args.hasFlag(options::OPT_funique_section_names,
4194  options::OPT_fno_unique_section_names, true))
4195  CmdArgs.push_back("-fno-unique-section-names");
4196 
4197  Args.AddLastArg(CmdArgs, options::OPT_finstrument_functions,
4198  options::OPT_finstrument_functions_after_inlining,
4199  options::OPT_finstrument_function_entry_bare);
4200 
4201  // NVPTX doesn't support PGO or coverage. There's no runtime support for
4202  // sampling, overhead of call arc collection is way too high and there's no
4203  // way to collect the output.
4204  if (!Triple.isNVPTX())
4205  addPGOAndCoverageFlags(TC, C, D, Output, Args, CmdArgs);
4206 
4207  Args.AddLastArg(CmdArgs, options::OPT_fclang_abi_compat_EQ);
4208 
4209  // Add runtime flag for PS4 when PGO, coverage, or sanitizers are enabled.
4210  if (RawTriple.isPS4CPU() &&
4211  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
4212  PS4cpu::addProfileRTArgs(TC, Args, CmdArgs);
4213  PS4cpu::addSanitizerArgs(TC, CmdArgs);
4214  }
4215 
4216  // Pass options for controlling the default header search paths.
4217  if (Args.hasArg(options::OPT_nostdinc)) {
4218  CmdArgs.push_back("-nostdsysteminc");
4219  CmdArgs.push_back("-nobuiltininc");
4220  } else {
4221  if (Args.hasArg(options::OPT_nostdlibinc))
4222  CmdArgs.push_back("-nostdsysteminc");
4223  Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
4224  Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
4225  }
4226 
4227  // Pass the path to compiler resource files.
4228  CmdArgs.push_back("-resource-dir");
4229  CmdArgs.push_back(D.ResourceDir.c_str());
4230 
4231  Args.AddLastArg(CmdArgs, options::OPT_working_directory);
4232 
4233  RenderARCMigrateToolOptions(D, Args, CmdArgs);
4234 
4235  // Add preprocessing options like -I, -D, etc. if we are using the
4236  // preprocessor.
4237  //
4238  // FIXME: Support -fpreprocessed
4240  AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
4241 
4242  // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
4243  // that "The compiler can only warn and ignore the option if not recognized".
4244  // When building with ccache, it will pass -D options to clang even on
4245  // preprocessed inputs and configure concludes that -fPIC is not supported.
4246  Args.ClaimAllArgs(options::OPT_D);
4247 
4248  // Manually translate -O4 to -O3; let clang reject others.
4249  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
4250  if (A->getOption().matches(options::OPT_O4)) {
4251  CmdArgs.push_back("-O3");
4252  D.Diag(diag::warn_O4_is_O3);
4253  } else {
4254  A->render(Args, CmdArgs);
4255  }
4256  }
4257 
4258  // Warn about ignored options to clang.
4259  for (const Arg *A :
4260  Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
4261  D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
4262  A->claim();
4263  }
4264 
4265  for (const Arg *A :
4266  Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
4267  D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
4268  A->claim();
4269  }
4270 
4271  claimNoWarnArgs(Args);
4272 
4273  Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
4274 
4275  Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
4276  if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
4277  CmdArgs.push_back("-pedantic");
4278  Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
4279  Args.AddLastArg(CmdArgs, options::OPT_w);
4280 
4281  // Fixed point flags
4282  if (Args.hasFlag(options::OPT_ffixed_point, options::OPT_fno_fixed_point,
4283  /*Default=*/false))
4284  Args.AddLastArg(CmdArgs, options::OPT_ffixed_point);
4285 
4286  // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
4287  // (-ansi is equivalent to -std=c89 or -std=c++98).
4288  //
4289  // If a std is supplied, only add -trigraphs if it follows the
4290  // option.
4291  bool ImplyVCPPCXXVer = false;
4292  const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
4293  if (Std) {
4294  if (Std->getOption().matches(options::OPT_ansi))
4295  if (types::isCXX(InputType))
4296  CmdArgs.push_back("-std=c++98");
4297  else
4298  CmdArgs.push_back("-std=c89");
4299  else
4300  Std->render(Args, CmdArgs);
4301 
4302  // If -f(no-)trigraphs appears after the language standard flag, honor it.
4303  if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
4304  options::OPT_ftrigraphs,
4305  options::OPT_fno_trigraphs))
4306  if (A != Std)
4307  A->render(Args, CmdArgs);
4308  } else {
4309  // Honor -std-default.
4310  //
4311  // FIXME: Clang doesn't correctly handle -std= when the input language
4312  // doesn't match. For the time being just ignore this for C++ inputs;
4313  // eventually we want to do all the standard defaulting here instead of
4314  // splitting it between the driver and clang -cc1.
4315  if (!types::isCXX(InputType))
4316  Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
4317  /*Joined=*/true);
4318  else if (IsWindowsMSVC)
4319  ImplyVCPPCXXVer = true;
4320 
4321  Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
4322  options::OPT_fno_trigraphs);
4323  }
4324 
4325  // GCC's behavior for -Wwrite-strings is a bit strange:
4326  // * In C, this "warning flag" changes the types of string literals from
4327  // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
4328  // for the discarded qualifier.
4329  // * In C++, this is just a normal warning flag.
4330  //
4331  // Implementing this warning correctly in C is hard, so we follow GCC's
4332  // behavior for now. FIXME: Directly diagnose uses of a string literal as
4333  // a non-const char* in C, rather than using this crude hack.
4334  if (!types::isCXX(InputType)) {
4335  // FIXME: This should behave just like a warning flag, and thus should also
4336  // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
4337  Arg *WriteStrings =
4338  Args.getLastArg(options::OPT_Wwrite_strings,
4339  options::OPT_Wno_write_strings, options::OPT_w);
4340  if (WriteStrings &&
4341  WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
4342  CmdArgs.push_back("-fconst-strings");
4343  }
4344 
4345  // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
4346  // during C++ compilation, which it is by default. GCC keeps this define even
4347  // in the presence of '-w', match this behavior bug-for-bug.
4348  if (types::isCXX(InputType) &&
4349  Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
4350  true)) {
4351  CmdArgs.push_back("-fdeprecated-macro");
4352  }
4353 
4354  // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
4355  if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
4356  if (Asm->getOption().matches(options::OPT_fasm))
4357  CmdArgs.push_back("-fgnu-keywords");
4358  else
4359  CmdArgs.push_back("-fno-gnu-keywords");
4360  }
4361 
4362  if (ShouldDisableDwarfDirectory(Args, TC))
4363  CmdArgs.push_back("-fno-dwarf-directory-asm");
4364 
4365  if (ShouldDisableAutolink(Args, TC))
4366  CmdArgs.push_back("-fno-autolink");
4367 
4368  // Add in -fdebug-compilation-dir if necessary.
4369  addDebugCompDirArg(Args, CmdArgs, D.getVFS());
4370 
4371  addDebugPrefixMapArg(D, Args, CmdArgs);
4372 
4373  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
4374  options::OPT_ftemplate_depth_EQ)) {
4375  CmdArgs.push_back("-ftemplate-depth");
4376  CmdArgs.push_back(A->getValue());
4377  }
4378 
4379  if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
4380  CmdArgs.push_back("-foperator-arrow-depth");
4381  CmdArgs.push_back(A->getValue());
4382  }
4383 
4384  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
4385  CmdArgs.push_back("-fconstexpr-depth");
4386  CmdArgs.push_back(A->getValue());
4387  }
4388 
4389  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
4390  CmdArgs.push_back("-fconstexpr-steps");
4391  CmdArgs.push_back(A->getValue());
4392  }
4393 
4394  if (Args.hasArg(options::OPT_fexperimental_new_constant_interpreter))
4395  CmdArgs.push_back("-fexperimental-new-constant-interpreter");
4396 
4397  if (Args.hasArg(options::OPT_fforce_experimental_new_constant_interpreter))
4398  CmdArgs.push_back("-fforce-experimental-new-constant-interpreter");
4399 
4400  if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
4401  CmdArgs.push_back("-fbracket-depth");
4402  CmdArgs.push_back(A->getValue());
4403  }
4404 
4405  if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
4406  options::OPT_Wlarge_by_value_copy_def)) {
4407  if (A->getNumValues()) {
4408  StringRef bytes = A->getValue();
4409  CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
4410  } else
4411  CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
4412  }
4413 
4414  if (Args.hasArg(options::OPT_relocatable_pch))
4415  CmdArgs.push_back("-relocatable-pch");
4416 
4417  if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
4418  static const char *kCFABIs[] = {
4419  "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
4420  };
4421 
4422  if (find(kCFABIs, StringRef(A->getValue())) == std::end(kCFABIs))
4423  D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
4424  else
4425  A->render(Args, CmdArgs);
4426  }
4427 
4428  if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
4429  CmdArgs.push_back("-fconstant-string-class");
4430  CmdArgs.push_back(A->getValue());
4431  }
4432 
4433  if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
4434  CmdArgs.push_back("-ftabstop");
4435  CmdArgs.push_back(A->getValue());
4436  }
4437 
4438  if (Args.hasFlag(options::OPT_fstack_size_section,
4439  options::OPT_fno_stack_size_section, RawTriple.isPS4()))
4440  CmdArgs.push_back("-fstack-size-section");
4441 
4442  CmdArgs.push_back("-ferror-limit");
4443  if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
4444  CmdArgs.push_back(A->getValue());
4445  else
4446  CmdArgs.push_back("19");
4447 
4448  if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
4449  CmdArgs.push_back("-fmacro-backtrace-limit");
4450  CmdArgs.push_back(A->getValue());
4451  }
4452 
4453  if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
4454  CmdArgs.push_back("-ftemplate-backtrace-limit");
4455  CmdArgs.push_back(A->getValue());
4456  }
4457 
4458  if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
4459  CmdArgs.push_back("-fconstexpr-backtrace-limit");
4460  CmdArgs.push_back(A->getValue());
4461  }
4462 
4463  if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
4464  CmdArgs.push_back("-fspell-checking-limit");
4465  CmdArgs.push_back(A->getValue());
4466  }
4467 
4468  // Pass -fmessage-length=.
4469  CmdArgs.push_back("-fmessage-length");
4470  if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
4471  CmdArgs.push_back(A->getValue());
4472  } else {
4473  // If -fmessage-length=N was not specified, determine whether this is a
4474  // terminal and, if so, implicitly define -fmessage-length appropriately.
4475  unsigned N = llvm::sys::Process::StandardErrColumns();
4476  CmdArgs.push_back(Args.MakeArgString(Twine(N)));
4477  }
4478 
4479  // -fvisibility= and -fvisibility-ms-compat are of a piece.
4480  if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
4481  options::OPT_fvisibility_ms_compat)) {
4482  if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
4483  CmdArgs.push_back("-fvisibility");
4484  CmdArgs.push_back(A->getValue());
4485  } else {
4486  assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
4487  CmdArgs.push_back("-fvisibility");
4488  CmdArgs.push_back("hidden");
4489  CmdArgs.push_back("-ftype-visibility");
4490  CmdArgs.push_back("default");
4491  }
4492  }
4493 
4494  Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
4495  Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
4496 
4497  Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
4498 
4499  // Forward -f (flag) options which we can pass directly.
4500  Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
4501  Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
4502  Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
4503  Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
4504  Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
4505  options::OPT_fno_emulated_tls);
4506  Args.AddLastArg(CmdArgs, options::OPT_fkeep_static_consts);
4507 
4508  // AltiVec-like language extensions aren't relevant for assembling.
4509  if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
4510  Args.AddLastArg(CmdArgs, options::OPT_fzvector);
4511 
4512  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
4513  Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
4514 
4515  // Forward flags for OpenMP. We don't do this if the current action is an
4516  // device offloading action other than OpenMP.
4517  if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
4518  options::OPT_fno_openmp, false) &&
4521  switch (D.getOpenMPRuntime(Args)) {
4522  case Driver::OMPRT_OMP:
4523  case Driver::OMPRT_IOMP5:
4524  // Clang can generate useful OpenMP code for these two runtime libraries.
4525  CmdArgs.push_back("-fopenmp");
4526 
4527  // If no option regarding the use of TLS in OpenMP codegeneration is
4528  // given, decide a default based on the target. Otherwise rely on the
4529  // options and pass the right information to the frontend.
4530  if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
4531  options::OPT_fnoopenmp_use_tls, /*Default=*/true))
4532  CmdArgs.push_back("-fnoopenmp-use-tls");
4533  Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4534  options::OPT_fno_openmp_simd);
4535  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4536  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
4537  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
4538  Args.AddAllArgs(CmdArgs,
4539  options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
4540  if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
4541  options::OPT_fno_openmp_optimistic_collapse,
4542  /*Default=*/false))
4543  CmdArgs.push_back("-fopenmp-optimistic-collapse");
4544 
4545  // When in OpenMP offloading mode with NVPTX target, forward
4546  // cuda-mode flag
4547  if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
4548  options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
4549  CmdArgs.push_back("-fopenmp-cuda-mode");
4550 
4551  // When in OpenMP offloading mode with NVPTX target, check if full runtime
4552  // is required.
4553  if (Args.hasFlag(options::OPT_fopenmp_cuda_force_full_runtime,
4554  options::OPT_fno_openmp_cuda_force_full_runtime,
4555  /*Default=*/false))
4556  CmdArgs.push_back("-fopenmp-cuda-force-full-runtime");
4557  break;
4558  default:
4559  // By default, if Clang doesn't know how to generate useful OpenMP code
4560  // for a specific runtime library, we just don't pass the '-fopenmp' flag
4561  // down to the actual compilation.
4562  // FIXME: It would be better to have a mode which *only* omits IR
4563  // generation based on the OpenMP support so that we get consistent
4564  // semantic analysis, etc.
4565  break;
4566  }
4567  } else {
4568  Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
4569  options::OPT_fno_openmp_simd);
4570  Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
4571  }
4572 
4573  const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
4574  Sanitize.addArgs(TC, Args, CmdArgs, InputType);
4575 
4576  const XRayArgs &XRay = TC.getXRayArgs();
4577  XRay.addArgs(TC, Args, CmdArgs, InputType);
4578 
4579  if (TC.SupportsProfiling())
4580  Args.AddLastArg(CmdArgs, options::OPT_pg);
4581 
4582  if (TC.SupportsProfiling())
4583  Args.AddLastArg(CmdArgs, options::OPT_mfentry);
4584 
4585  if (Args.getLastArg(options::OPT_fapple_kext) ||
4586  (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
4587  CmdArgs.push_back("-fapple-kext");
4588 
4589  Args.AddLastArg(CmdArgs, options::OPT_flax_vector_conversions_EQ);
4590  Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
4591  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
4592  Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
4593  Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
4594  Args.AddLastArg(CmdArgs, options::OPT_ftime_trace);
4595  Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);
4596  Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
4597  Args.AddLastArg(CmdArgs, options::OPT_malign_double);
4598 
4599  if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
4600  CmdArgs.push_back("-ftrapv-handler");
4601  CmdArgs.push_back(A->getValue());
4602  }
4603 
4604  Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
4605 
4606  // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
4607  // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
4608  if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
4609  if (A->getOption().matches(options::OPT_fwrapv))
4610  CmdArgs.push_back("-fwrapv");
4611  } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
4612  options::OPT_fno_strict_overflow)) {
4613  if (A->getOption().matches(options::OPT_fno_strict_overflow))
4614  CmdArgs.push_back("-fwrapv");
4615  }
4616 
4617  if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
4618  options::OPT_fno_reroll_loops))
4619  if (A->getOption().matches(options::OPT_freroll_loops))
4620  CmdArgs.push_back("-freroll-loops");
4621 
4622  Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
4623  Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
4624  options::OPT_fno_unroll_loops);
4625 
4626  Args.AddLastArg(CmdArgs, options::OPT_pthread);
4627 
4628  if (Args.hasFlag(options::OPT_mspeculative_load_hardening, options::OPT_mno_speculative_load_hardening,
4629  false))
4630  CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening"));
4631 
4632  RenderSSPOptions(TC, Args, CmdArgs, KernelOrKext);
4633  RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
4634 
4635  // Translate -mstackrealign
4636  if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
4637  false))
4638  CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
4639 
4640  if (Args.hasArg(options::OPT_mstack_alignment)) {
4641  StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
4642  CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
4643  }
4644 
4645  if (Args.hasArg(options::OPT_mstack_probe_size)) {
4646  StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
4647 
4648  if (!Size.empty())
4649  CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
4650  else
4651  CmdArgs.push_back("-mstack-probe-size=0");
4652  }
4653 
4654  if (!Args.hasFlag(options::OPT_mstack_arg_probe,
4655  options::OPT_mno_stack_arg_probe, true))
4656  CmdArgs.push_back(Args.MakeArgString("-mno-stack-arg-probe"));
4657 
4658  if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
4659  options::OPT_mno_restrict_it)) {
4660  if (A->getOption().matches(options::OPT_mrestrict_it)) {
4661  CmdArgs.push_back("-mllvm");
4662  CmdArgs.push_back("-arm-restrict-it");
4663  } else {
4664  CmdArgs.push_back("-mllvm");
4665  CmdArgs.push_back("-arm-no-restrict-it");
4666  }
4667  } else if (Triple.isOSWindows() &&
4668  (Triple.getArch() == llvm::Triple::arm ||
4669  Triple.getArch() == llvm::Triple::thumb)) {
4670  // Windows on ARM expects restricted IT blocks
4671  CmdArgs.push_back("-mllvm");
4672  CmdArgs.push_back("-arm-restrict-it");
4673  }
4674 
4675  // Forward -cl options to -cc1
4676  RenderOpenCLOptions(Args, CmdArgs);
4677 
4678  if (Args.hasFlag(options::OPT_fhip_new_launch_api,
4679  options::OPT_fno_hip_new_launch_api, false))
4680  CmdArgs.push_back("-fhip-new-launch-api");
4681 
4682  if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
4683  CmdArgs.push_back(
4684  Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
4685  }
4686 
4687  // Forward -f options with positive and negative forms; we translate
4688  // these by hand.
4689  if (Arg *A = getLastProfileSampleUseArg(Args)) {
4690  auto *PGOArg = Args.getLastArg(
4691  options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,
4692  options::OPT_fcs_profile_generate, options::OPT_fcs_profile_generate_EQ,
4693  options::OPT_fprofile_use, options::OPT_fprofile_use_EQ);
4694  if (PGOArg)
4695  D.Diag(diag::err_drv_argument_not_allowed_with)
4696  << "SampleUse with PGO options";
4697 
4698  StringRef fname = A->getValue();
4699  if (!llvm::sys::fs::exists(fname))
4700  D.Diag(diag::err_drv_no_such_file) << fname;
4701  else
4702  A->render(Args, CmdArgs);
4703  }
4704  Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
4705 
4706  RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);
4707 
4708  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4709  options::OPT_fno_assume_sane_operator_new))
4710  CmdArgs.push_back("-fno-assume-sane-operator-new");
4711 
4712  // -fblocks=0 is default.
4713  if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
4714  TC.IsBlocksDefault()) ||
4715  (Args.hasArg(options::OPT_fgnu_runtime) &&
4716  Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
4717  !Args.hasArg(options::OPT_fno_blocks))) {
4718  CmdArgs.push_back("-fblocks");
4719 
4720  if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
4721  CmdArgs.push_back("-fblocks-runtime-optional");
4722  }
4723 
4724  // -fencode-extended-block-signature=1 is default.
4725  if (TC.IsEncodeExtendedBlockSignatureDefault())
4726  CmdArgs.push_back("-fencode-extended-block-signature");
4727 
4728  if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
4729  false) &&
4730  types::isCXX(InputType)) {
4731  CmdArgs.push_back("-fcoroutines-ts");
4732  }
4733 
4734  Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
4735  options::OPT_fno_double_square_bracket_attributes);
4736 
4737  // -faccess-control is default.
4738  if (Args.hasFlag(options::OPT_fno_access_control,
4739  options::OPT_faccess_control, false))
4740  CmdArgs.push_back("-fno-access-control");
4741 
4742  // -felide-constructors is the default.
4743  if (Args.hasFlag(options::OPT_fno_elide_constructors,
4744  options::OPT_felide_constructors, false))
4745  CmdArgs.push_back("-fno-elide-constructors");
4746 
4747  ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
4748 
4749  if (KernelOrKext || (types::isCXX(InputType) &&
4750  (RTTIMode == ToolChain::RM_Disabled)))
4751  CmdArgs.push_back("-fno-rtti");
4752 
4753  // -fshort-enums=0 is default for all architectures except Hexagon.
4754  if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
4755  TC.getArch() == llvm::Triple::hexagon))
4756  CmdArgs.push_back("-fshort-enums");
4757 
4758  RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
4759 
4760  // -fuse-cxa-atexit is default.
4761  if (!Args.hasFlag(
4762  options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
4763  !RawTriple.isOSWindows() &&
4764  TC.getArch() != llvm::Triple::xcore &&
4765  ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
4766  RawTriple.hasEnvironment())) ||
4767  KernelOrKext)
4768  CmdArgs.push_back("-fno-use-cxa-atexit");
4769 
4770  if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
4771  options::OPT_fno_register_global_dtors_with_atexit,
4772  RawTriple.isOSDarwin() && !KernelOrKext))
4773  CmdArgs.push_back("-fregister-global-dtors-with-atexit");
4774 
4775  // -fms-extensions=0 is default.
4776  if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
4777  IsWindowsMSVC))
4778  CmdArgs.push_back("-fms-extensions");
4779 
4780  // -fno-use-line-directives is default.
4781  if (Args.hasFlag(options::OPT_fuse_line_directives,
4782  options::OPT_fno_use_line_directives, false))
4783  CmdArgs.push_back("-fuse-line-directives");
4784 
4785  // -fms-compatibility=0 is default.
4786  bool IsMSVCCompat = Args.hasFlag(
4787  options::OPT_fms_compatibility, options::OPT_fno_ms_compatibility,
4788  (IsWindowsMSVC && Args.hasFlag(options::OPT_fms_extensions,
4789  options::OPT_fno_ms_extensions, true)));
4790  if (IsMSVCCompat)
4791  CmdArgs.push_back("-fms-compatibility");
4792 
4793  // Handle -fgcc-version, if present.
4794  VersionTuple GNUCVer;
4795  if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {
4796  // Check that the version has 1 to 3 components and the minor and patch
4797  // versions fit in two decimal digits.
4798  StringRef Val = A->getValue();
4799  Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable.
4800  bool Invalid = GNUCVer.tryParse(Val);
4801  unsigned Minor = GNUCVer.getMinor().getValueOr(0);
4802  unsigned Patch = GNUCVer.getSubminor().getValueOr(0);
4803  if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
4804  D.Diag(diag::err_drv_invalid_value)
4805  << A->getAsString(Args) << A->getValue();
4806  }
4807  } else if (!IsMSVCCompat) {
4808  // Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect.
4809  GNUCVer = VersionTuple(4, 2, 1);
4810  }
4811  if (!GNUCVer.empty()) {
4812  CmdArgs.push_back(
4813  Args.MakeArgString("-fgnuc-version=" + GNUCVer.getAsString()));
4814  }
4815 
4816  VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);
4817  if (!MSVT.empty())
4818  CmdArgs.push_back(
4819  Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
4820 
4821  bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
4822  if (ImplyVCPPCXXVer) {
4823  StringRef LanguageStandard;
4824  if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
4825  Std = StdArg;
4826  LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
4827  .Case("c++14", "-std=c++14")
4828  .Case("c++17", "-std=c++17")
4829  .Case("c++latest", "-std=c++2a")
4830  .Default("");
4831  if (LanguageStandard.empty())
4832  D.Diag(clang::diag::warn_drv_unused_argument)
4833  << StdArg->getAsString(Args);
4834  }
4835 
4836  if (LanguageStandard.empty()) {
4837  if (IsMSVC2015Compatible)
4838  LanguageStandard = "-std=c++14";
4839  else
4840  LanguageStandard = "-std=c++11";
4841  }
4842 
4843  CmdArgs.push_back(LanguageStandard.data());
4844  }
4845 
4846  // -fno-borland-extensions is default.
4847  if (Args.hasFlag(options::OPT_fborland_extensions,
4848  options::OPT_fno_borland_extensions, false))
4849  CmdArgs.push_back("-fborland-extensions");
4850 
4851  // -fno-declspec is default, except for PS4.
4852  if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
4853  RawTriple.isPS4()))
4854  CmdArgs.push_back("-fdeclspec");
4855  else if (Args.hasArg(options::OPT_fno_declspec))
4856  CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
4857 
4858  // -fthreadsafe-static is default, except for MSVC compatibility versions less
4859  // than 19.
4860  if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
4861  options::OPT_fno_threadsafe_statics,
4862  !IsWindowsMSVC || IsMSVC2015Compatible))
4863  CmdArgs.push_back("-fno-threadsafe-statics");
4864 
4865  // -fno-delayed-template-parsing is default, except when targeting MSVC.
4866  // Many old Windows SDK versions require this to parse.
4867  // FIXME: MSVC introduced /Zc:twoPhase- to disable this behavior in their
4868  // compiler. We should be able to disable this by default at some point.
4869  if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
4870  options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
4871  CmdArgs.push_back("-fdelayed-template-parsing");
4872 
4873  // -fgnu-keywords default varies depending on language; only pass if
4874  // specified.
4875  Args.AddLastArg(CmdArgs, options::OPT_fgnu_keywords,
4876  options::OPT_fno_gnu_keywords);
4877 
4878  if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
4879  false))
4880  CmdArgs.push_back("-fgnu89-inline");
4881 
4882  if (Args.hasArg(options::OPT_fno_inline))
4883  CmdArgs.push_back("-fno-inline");
4884 
4885  Args.AddLastArg(CmdArgs, options::OPT_finline_functions,
4886  options::OPT_finline_hint_functions,
4887  options::OPT_fno_inline_functions);
4888 
4889  // FIXME: Find a better way to determine whether the language has modules
4890  // support by default, or just assume that all languages do.
4891  bool HaveModules =
4892  Std && (Std->containsValue("c++2a") || Std->containsValue("c++latest"));
4893  RenderModulesOptions(C, D, Args, Input, Output, CmdArgs, HaveModules);
4894 
4895  if (Args.hasFlag(options::OPT_fpch_validate_input_files_content,
4896  options::OPT_fno_pch_validate_input_files_content, false))
4897  CmdArgs.push_back("-fvalidate-ast-input-files-content");
4898 
4899  Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
4900  options::OPT_fno_experimental_new_pass_manager);
4901 
4902  ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
4903  RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
4904  Input, CmdArgs);
4905 
4906  if (Args.hasFlag(options::OPT_fapplication_extension,
4907  options::OPT_fno_application_extension, false))
4908  CmdArgs.push_back("-fapplication-extension");
4909 
4910  // Handle GCC-style exception args.
4911  if (!C.getDriver().IsCLMode())
4912  addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);
4913 
4914  // Handle exception personalities
4915  Arg *A = Args.getLastArg(
4916  options::OPT_fsjlj_exceptions, options::OPT_fseh_exceptions,
4917  options::OPT_fdwarf_exceptions, options::OPT_fwasm_exceptions);
4918  if (A) {
4919  const Option &Opt = A->getOption();
4920  if (Opt.matches(options::OPT_fsjlj_exceptions))
4921  CmdArgs.push_back("-fsjlj-exceptions");
4922  if (Opt.matches(options::OPT_fseh_exceptions))
4923  CmdArgs.push_back("-fseh-exceptions");
4924  if (Opt.matches(options::OPT_fdwarf_exceptions))
4925  CmdArgs.push_back("-fdwarf-exceptions");
4926  if (Opt.matches(options::OPT_fwasm_exceptions))
4927  CmdArgs.push_back("-fwasm-exceptions");
4928  } else {
4929  switch (TC.GetExceptionModel(Args)) {
4930  default:
4931  break;
4932  case llvm::ExceptionHandling::DwarfCFI:
4933  CmdArgs.push_back("-fdwarf-exceptions");
4934  break;
4935  case llvm::ExceptionHandling::SjLj:
4936  CmdArgs.push_back("-fsjlj-exceptions");
4937  break;
4938  case llvm::ExceptionHandling::WinEH:
4939  CmdArgs.push_back("-fseh-exceptions");
4940  break;
4941  }
4942  }
4943 
4944  // C++ "sane" operator new.
4945  if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
4946  options::OPT_fno_assume_sane_operator_new))
4947  CmdArgs.push_back("-fno-assume-sane-operator-new");
4948 
4949  // -frelaxed-template-template-args is off by default, as it is a severe
4950  // breaking change until a corresponding change to template partial ordering
4951  // is provided.
4952  if (Args.hasFlag(options::OPT_frelaxed_template_template_args,
4953  options::OPT_fno_relaxed_template_template_args, false))
4954  CmdArgs.push_back("-frelaxed-template-template-args");
4955 
4956  // -fsized-deallocation is off by default, as it is an ABI-breaking change for
4957  // most platforms.
4958  if (Args.hasFlag(options::OPT_fsized_deallocation,
4959  options::OPT_fno_sized_deallocation, false))
4960  CmdArgs.push_back("-fsized-deallocation");
4961 
4962  // -faligned-allocation is on by default in C++17 onwards and otherwise off
4963  // by default.
4964  if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
4965  options::OPT_fno_aligned_allocation,
4966  options::OPT_faligned_new_EQ)) {
4967  if (A->getOption().matches(options::OPT_fno_aligned_allocation))
4968  CmdArgs.push_back("-fno-aligned-allocation");
4969  else
4970  CmdArgs.push_back("-faligned-allocation");
4971  }
4972 
4973  // The default new alignment can be specified using a dedicated option or via
4974  // a GCC-compatible option that also turns on aligned allocation.
4975  if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
4976  options::OPT_faligned_new_EQ))
4977  CmdArgs.push_back(
4978  Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
4979 
4980  // -fconstant-cfstrings is default, and may be subject to argument translation
4981  // on Darwin.
4982  if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
4983  options::OPT_fno_constant_cfstrings) ||
4984  !Args.hasFlag(options::OPT_mconstant_cfstrings,
4985  options::OPT_mno_constant_cfstrings))
4986  CmdArgs.push_back("-fno-constant-cfstrings");
4987 
4988  // -fno-pascal-strings is default, only pass non-default.
4989  if (Args.hasFlag(options::OPT_fpascal_strings,
4990  options::OPT_fno_pascal_strings, false))
4991  CmdArgs.push_back("-fpascal-strings");
4992 
4993  // Honor -fpack-struct= and -fpack-struct, if given. Note that
4994  // -fno-pack-struct doesn't apply to -fpack-struct=.
4995  if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
4996  std::string PackStructStr = "-fpack-struct=";
4997  PackStructStr += A->getValue();
4998  CmdArgs.push_back(Args.MakeArgString(PackStructStr));
4999  } else if (Args.hasFlag(options::OPT_fpack_struct,
5000  options::OPT_fno_pack_struct, false)) {
5001  CmdArgs.push_back("-fpack-struct=1");
5002  }
5003 
5004  // Handle -fmax-type-align=N and -fno-type-align
5005  bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
5006  if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
5007  if (!SkipMaxTypeAlign) {
5008  std::string MaxTypeAlignStr = "-fmax-type-align=";
5009  MaxTypeAlignStr += A->getValue();
5010  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
5011  }
5012  } else if (RawTriple.isOSDarwin()) {
5013  if (!SkipMaxTypeAlign) {
5014  std::string MaxTypeAlignStr = "-fmax-type-align=16";
5015  CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
5016  }
5017  }
5018 
5019  if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
5020  CmdArgs.push_back("-Qn");
5021 
5022  // -fcommon is the default unless compiling kernel code or the target says so
5023  bool NoCommonDefault = KernelOrKext || isNoCommonDefault(RawTriple);
5024  if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
5025  !NoCommonDefault))
5026  CmdArgs.push_back("-fno-common");
5027 
5028  // -fsigned-bitfields is default, and clang doesn't yet support
5029  // -funsigned-bitfields.
5030  if (!Args.hasFlag(options::OPT_fsigned_bitfields,
5031  options::OPT_funsigned_bitfields))
5032  D.Diag(diag::warn_drv_clang_unsupported)
5033  << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
5034 
5035  // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
5036  if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
5037  D.Diag(diag::err_drv_clang_unsupported)
5038  << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
5039 
5040  // -finput_charset=UTF-8 is default. Reject others
5041  if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
5042  StringRef value = inputCharset->getValue();
5043  if (!value.equals_lower("utf-8"))
5044  D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
5045  << value;
5046  }
5047 
5048  // -fexec_charset=UTF-8 is default. Reject others
5049  if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
5050  StringRef value = execCharset->getValue();
5051  if (!value.equals_lower("utf-8"))
5052  D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
5053  << value;
5054  }
5055 
5056  RenderDiagnosticsOptions(D, Args, CmdArgs);
5057 
5058  // -fno-asm-blocks is default.
5059  if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
5060  false))
5061  CmdArgs.push_back("-fasm-blocks");
5062 
5063  // -fgnu-inline-asm is default.
5064  if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
5065  options::OPT_fno_gnu_inline_asm, true))
5066  CmdArgs.push_back("-fno-gnu-inline-asm");
5067 
5068  // Enable vectorization per default according to the optimization level
5069  // selected. For optimization levels that want vectorization we use the alias
5070  // option to simplify the hasFlag logic.
5071  bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
5072  OptSpecifier VectorizeAliasOption =
5073  EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
5074  if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
5075  options::OPT_fno_vectorize, EnableVec))
5076  CmdArgs.push_back("-vectorize-loops");
5077 
5078  // -fslp-vectorize is enabled based on the optimization level selected.
5079  bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
5080  OptSpecifier SLPVectAliasOption =
5081  EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
5082  if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
5083  options::OPT_fno_slp_vectorize, EnableSLPVec))
5084  CmdArgs.push_back("-vectorize-slp");
5085 
5086  ParseMPreferVectorWidth(D, Args, CmdArgs);
5087 
5088  Args.AddLastArg(CmdArgs, options::OPT_fshow_overloads_EQ);
5089  Args.AddLastArg(CmdArgs,
5090  options::OPT_fsanitize_undefined_strip_path_components_EQ);
5091 
5092  // -fdollars-in-identifiers default varies depending on platform and
5093  // language; only pass if specified.
5094  if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
5095  options::OPT_fno_dollars_in_identifiers)) {
5096  if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
5097  CmdArgs.push_back("-fdollars-in-identifiers");
5098  else
5099  CmdArgs.push_back("-fno-dollars-in-identifiers");
5100  }
5101 
5102  // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
5103  // practical purposes.
5104  if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
5105  options::OPT_fno_unit_at_a_time)) {
5106  if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
5107  D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
5108  }
5109 
5110  if (Args.hasFlag(options::OPT_fapple_pragma_pack,
5111  options::OPT_fno_apple_pragma_pack, false))
5112  CmdArgs.push_back("-fapple-pragma-pack");
5113 
5114  // Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
5115  if (Args.hasFlag(options::OPT_fsave_optimization_record,
5116  options::OPT_foptimization_record_file_EQ,
5117  options::OPT_fno_save_optimization_record, false) ||
5118  Args.hasFlag(options::OPT_fsave_optimization_record_EQ,
5119  options::OPT_fno_save_optimization_record, false) ||
5120  Args.hasFlag(options::OPT_foptimization_record_passes_EQ,
5121  options::OPT_fno_save_optimization_record, false)) {
5122  CmdArgs.push_back("-opt-record-file");
5123 
5124  const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
5125  if (A) {
5126  CmdArgs.push_back(A->getValue());
5127  } else {
5128  SmallString<128> F;
5129 
5130  if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
5131  if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
5132  F = FinalOutput->getValue();
5133  }
5134 
5135  if (F.empty()) {
5136  // Use the input filename.
5137  F = llvm::sys::path::stem(Input.getBaseInput());
5138 
5139  // If we're compiling for an offload architecture (i.e. a CUDA device),
5140  // we need to make the file name for the device compilation different
5141  // from the host compilation.
5144  llvm::sys::path::replace_extension(F, "");
5146  Triple.normalize());
5147  F += "-";
5148  F += JA.getOffloadingArch();
5149  }
5150  }
5151 
5152  std::string Extension = "opt.";
5153  if (const Arg *A =
5154  Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
5155  Extension += A->getValue();
5156  else
5157  Extension += "yaml";
5158 
5159  llvm::sys::path::replace_extension(F, Extension);
5160  CmdArgs.push_back(Args.MakeArgString(F));
5161  }
5162 
5163  if (const Arg *A =
5164  Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
5165  CmdArgs.push_back("-opt-record-passes");
5166  CmdArgs.push_back(A->getValue());
5167  }
5168 
5169  if (const Arg *A =
5170  Args.getLastArg(options::OPT_fsave_optimization_record_EQ)) {
5171  CmdArgs.push_back("-opt-record-format");
5172  CmdArgs.push_back(A->getValue());
5173  }
5174  }
5175 
5176  bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
5177  options::OPT_fno_rewrite_imports, false);
5178  if (RewriteImports)
5179  CmdArgs.push_back("-frewrite-imports");
5180 
5181  // Enable rewrite includes if the user's asked for it or if we're generating
5182  // diagnostics.
5183  // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
5184  // nice to enable this when doing a crashdump for modules as well.
5185  if (Args.hasFlag(options::OPT_frewrite_includes,
5186  options::OPT_fno_rewrite_includes, false) ||
5187  (C.isForDiagnostics() && !HaveModules))
5188  CmdArgs.push_back("-frewrite-includes");
5189 
5190  // Only allow -traditional or -traditional-cpp outside in preprocessing modes.
5191  if (Arg *A = Args.getLastArg(options::OPT_traditional,
5192  options::OPT_traditional_cpp)) {
5193  if (isa<PreprocessJobAction>(JA))
5194  CmdArgs.push_back("-traditional-cpp");
5195  else
5196  D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
5197  }
5198 
5199  Args.AddLastArg(CmdArgs, options::OPT_dM);
5200  Args.AddLastArg(CmdArgs, options::OPT_dD);
5201 
5202  // Handle serialized diagnostics.
5203  if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
5204  CmdArgs.push_back("-serialize-diagnostic-file");
5205  CmdArgs.push_back(Args.MakeArgString(A->getValue()));
5206  }
5207 
5208  if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
5209  CmdArgs.push_back("-fretain-comments-from-system-headers");
5210 
5211  // Forward -fcomment-block-commands to -cc1.
5212  Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
5213  // Forward -fparse-all-comments to -cc1.
5214  Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
5215 
5216  // Turn -fplugin=name.so into -load name.so
5217  for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
5218  CmdArgs.push_back("-load");
5219  CmdArgs.push_back(A->getValue());
5220  A->claim();
5221  }
5222 
5223  // Forward -fpass-plugin=name.so to -cc1.
5224  for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {
5225  CmdArgs.push_back(
5226  Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));
5227  A->claim();
5228  }
5229 
5230  // Setup statistics file output.
5231  SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
5232  if (!StatsFile.empty())
5233  CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));
5234 
5235  // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
5236  // parser.
5237  // -finclude-default-header flag is for preprocessor,
5238  // do not pass it to other cc1 commands when save-temps is enabled
5239  if (C.getDriver().isSaveTempsEnabled() &&
5240  !isa<PreprocessJobAction>(JA)) {
5241  for (auto Arg : Args.filtered(options::OPT_Xclang)) {
5242  Arg->claim();
5243  if (StringRef(Arg->getValue()) != "-finclude-default-header")
5244  CmdArgs.push_back(Arg->getValue());
5245  }
5246  }
5247  else {
5248  Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
5249  }
5250  for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
5251  A->claim();
5252 
5253  // We translate this by hand to the -cc1 argument, since nightly test uses
5254  // it and developers have been trained to spell it with -mllvm. Both
5255  // spellings are now deprecated and should be removed.
5256  if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
5257  CmdArgs.push_back("-disable-llvm-optzns");
5258  } else {
5259  A->render(Args, CmdArgs);
5260  }
5261  }
5262 
5263  // With -save-temps, we want to save the unoptimized bitcode output from the
5264  // CompileJobAction, use -disable-llvm-passes to get pristine IR generated
5265  // by the frontend.
5266  // When -fembed-bitcode is enabled, optimized bitcode is emitted because it
5267  // has slightly different breakdown between stages.
5268  // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
5269  // pristine IR generated by the frontend. Ideally, a new compile action should
5270  // be added so both IR can be captured.
5271  if (C.getDriver().isSaveTempsEnabled() &&
5272  !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) &&
5273  isa<CompileJobAction>(JA))
5274  CmdArgs.push_back("-disable-llvm-passes");
5275 
5276  Args.AddAllArgs(CmdArgs, options::OPT_undef);
5277 
5278  const char *Exec = D.getClangProgramPath();
5279 
5280  // Optionally embed the -cc1 level arguments into the debug info or a
5281  // section, for build analysis.
5282  // Also record command line arguments into the debug info if
5283  // -grecord-gcc-switches options is set on.
5284  // By default, -gno-record-gcc-switches is set on and no recording.
5285  auto GRecordSwitches =
5286  Args.hasFlag(options::OPT_grecord_command_line,
5287  options::OPT_gno_record_command_line, false);
5288  auto FRecordSwitches =
5289  Args.hasFlag(options::OPT_frecord_command_line,
5290  options::OPT_fno_record_command_line, false);
5291  if (FRecordSwitches && !Triple.isOSBinFormatELF())
5292  D.Diag(diag::err_drv_unsupported_opt_for_target)
5293  << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)
5294  << TripleStr;
5295  if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
5296  ArgStringList OriginalArgs;
5297  for (const auto &Arg : Args)
5298  Arg->render(Args, OriginalArgs);
5299 
5300  SmallString<256> Flags;
5301  Flags += Exec;
5302  for (const char *OriginalArg : OriginalArgs) {
5303  SmallString<128> EscapedArg;
5304  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
5305  Flags += " ";
5306  Flags += EscapedArg;
5307  }
5308  auto FlagsArgString = Args.MakeArgString(Flags);
5309  if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
5310  CmdArgs.push_back("-dwarf-debug-flags");
5311  CmdArgs.push_back(FlagsArgString);
5312  }
5313  if (FRecordSwitches) {
5314  CmdArgs.push_back("-record-command-line");
5315  CmdArgs.push_back(FlagsArgString);
5316  }
5317  }
5318 
5319  // Host-side cuda compilation receives all device-side outputs in a single
5320  // fatbin as Inputs[1]. Include the binary with -fcuda-include-gpubinary.
5321  if ((IsCuda || IsHIP) && CudaDeviceInput) {
5322  CmdArgs.push_back("-fcuda-include-gpubinary");
5323  CmdArgs.push_back(CudaDeviceInput->getFilename());
5324  if (Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false))
5325  CmdArgs.push_back("-fgpu-rdc");
5326  }
5327 
5328  if (IsCuda) {
5329  if (Args.hasFlag(options::OPT_fcuda_short_ptr,
5330  options::OPT_fno_cuda_short_ptr, false))
5331  CmdArgs.push_back("-fcuda-short-ptr");
5332  }
5333 
5334  // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
5335  // to specify the result of the compile phase on the host, so the meaningful
5336  // device declarations can be identified. Also, -fopenmp-is-device is passed
5337  // along to tell the frontend that it is generating code for a device, so that
5338  // only the relevant declarations are emitted.
5339  if (IsOpenMPDevice) {
5340  CmdArgs.push_back("-fopenmp-is-device");
5341  if (OpenMPDeviceInput) {
5342  CmdArgs.push_back("-fopenmp-host-ir-file-path");
5343  CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));
5344  }
5345  }
5346 
5347  // For all the host OpenMP offloading compile jobs we need to pass the targets
5348  // information using -fopenmp-targets= option.
5350  SmallString<128> TargetInfo("-fopenmp-targets=");
5351 
5352  Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ);
5353  assert(Tgts && Tgts->getNumValues() &&
5354  "OpenMP offloading has to have targets specified.");
5355  for (unsigned i = 0; i < Tgts->getNumValues(); ++i) {
5356  if (i)
5357  TargetInfo += ',';
5358  // We need to get the string from the triple because it may be not exactly
5359  // the same as the one we get directly from the arguments.
5360  llvm::Triple T(Tgts->getValue(i));
5361  TargetInfo += T.getTriple();
5362  }
5363  CmdArgs.push_back(Args.MakeArgString(TargetInfo.str()));
5364  }
5365 
5366  bool VirtualFunctionElimination =
5367  Args.hasFlag(options::OPT_fvirtual_function_elimination,
5368  options::OPT_fno_virtual_function_elimination, false);
5369  if (VirtualFunctionElimination) {
5370  // VFE requires full LTO (currently, this might be relaxed to allow ThinLTO
5371  // in the future).
5372  if (D.getLTOMode() != LTOK_Full)
5373  D.Diag(diag::err_drv_argument_only_allowed_with)
5374  << "-fvirtual-function-elimination"
5375  << "-flto=full";
5376 
5377  CmdArgs.push_back("-fvirtual-function-elimination");
5378  }
5379 
5380  // VFE requires whole-program-vtables, and enables it by default.
5381  bool WholeProgramVTables = Args.hasFlag(
5382  options::OPT_fwhole_program_vtables,
5383  options::OPT_fno_whole_program_vtables, VirtualFunctionElimination);
5384  if (VirtualFunctionElimination && !WholeProgramVTables) {
5385  D.Diag(diag::err_drv_argument_not_allowed_with)
5386  << "-fno-whole-program-vtables"
5387  << "-fvirtual-function-elimination";
5388  }
5389 
5390  if (WholeProgramVTables) {
5391  if (!D.isUsingLTO())
5392  D.Diag(diag::err_drv_argument_only_allowed_with)
5393  << "-fwhole-program-vtables"
5394  << "-flto";
5395  CmdArgs.push_back("-fwhole-program-vtables");
5396  }
5397 
5398  bool DefaultsSplitLTOUnit = WholeProgramVTables || Sanitize.needsLTO();
5399  bool SplitLTOUnit =
5400  Args.hasFlag(options::OPT_fsplit_lto_unit,
5401  options::OPT_fno_split_lto_unit, DefaultsSplitLTOUnit);
5402  if (Sanitize.needsLTO() && !SplitLTOUnit)
5403  D.Diag(diag::err_drv_argument_not_allowed_with) << "-fno-split-lto-unit"
5404  << "-fsanitize=cfi";
5405  if (SplitLTOUnit)
5406  CmdArgs.push_back("-fsplit-lto-unit");
5407 
5408  if (Arg *A = Args.getLastArg(options::OPT_fexperimental_isel,
5409  options::OPT_fno_experimental_isel)) {
5410  CmdArgs.push_back("-mllvm");
5411  if (A->getOption().matches(options::OPT_fexperimental_isel)) {
5412  CmdArgs.push_back("-global-isel=1");
5413 
5414  // GISel is on by default on AArch64 -O0, so don't bother adding
5415  // the fallback remarks for it. Other combinations will add a warning of
5416  // some kind.
5417  bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
5418  bool IsOptLevelSupported = false;
5419 
5420  Arg *A = Args.getLastArg(options::OPT_O_Group);
5421  if (Triple.getArch() == llvm::Triple::aarch64) {
5422  if (!A || A->getOption().matches(options::OPT_O0))
5423  IsOptLevelSupported = true;
5424  }
5425  if (!IsArchSupported || !IsOptLevelSupported) {
5426  CmdArgs.push_back("-mllvm");
5427  CmdArgs.push_back("-global-isel-abort=2");
5428 
5429  if (!IsArchSupported)
5430  D.Diag(diag::warn_drv_experimental_isel_incomplete) << Triple.getArchName();
5431  else
5432  D.Diag(diag::warn_drv_experimental_isel_incomplete_opt);
5433  }
5434  } else {
5435  CmdArgs.push_back("-global-isel=0");
5436  }
5437  }
5438 
5439  if (Args.hasArg(options::OPT_forder_file_instrumentation)) {
5440  CmdArgs.push_back("-forder-file-instrumentation");
5441  // Enable order file instrumentation when ThinLTO is not on. When ThinLTO is
5442  // on, we need to pass these flags as linker flags and that will be handled
5443  // outside of the compiler.
5444  if (!D.isUsingLTO()) {
5445  CmdArgs.push_back("-mllvm");
5446  CmdArgs.push_back("-enable-order-file-instrumentation");
5447  }
5448  }
5449 
5450  if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
5451  options::OPT_fno_force_enable_int128)) {
5452  if (A->getOption().matches(options::OPT_fforce_enable_int128))
5453  CmdArgs.push_back("-fforce-enable-int128");
5454  }
5455 
5456  if (Args.hasFlag(options::OPT_fcomplete_member_pointers,
5457  options::OPT_fno_complete_member_pointers, false))
5458  CmdArgs.push_back("-fcomplete-member-pointers");
5459 
5460  if (!Args.hasFlag(options::OPT_fcxx_static_destructors,
5461  options::OPT_fno_cxx_static_destructors, true))
5462  CmdArgs.push_back("-fno-c++-static-destructors");
5463 
5464  if (Arg *A = Args.getLastArg(options::OPT_moutline,
5465  options::OPT_mno_outline)) {
5466  if (A->getOption().matches(options::OPT_moutline)) {
5467  // We only support -moutline in AArch64 right now. If we're not compiling
5468  // for AArch64, emit a warning and ignore the flag. Otherwise, add the
5469  // proper mllvm flags.
5470  if (Triple.getArch() != llvm::Triple::aarch64) {
5471  D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
5472  } else {
5473  CmdArgs.push_back("-mllvm");
5474  CmdArgs.push_back("-enable-machine-outliner");
5475  }
5476  } else {
5477  // Disable all outlining behaviour.
5478  CmdArgs.push_back("-mllvm");
5479  CmdArgs.push_back("-enable-machine-outliner=never");
5480  }
5481  }
5482 
5483  if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
5484  (TC.getTriple().isOSBinFormatELF() ||
5485  TC.getTriple().isOSBinFormatCOFF()) &&
5486  !TC.getTriple().isPS4() &&
5487  !TC.getTriple().isOSNetBSD() &&
5488  !Distro(D.getVFS()).IsGentoo() &&
5489  !TC.getTriple().isAndroid() &&
5490  TC.useIntegratedAs()))
5491  CmdArgs.push_back("-faddrsig");
5492 
5493  if (Arg *A = Args.getLastArg(options::OPT_fsymbol_partition_EQ)) {
5494  std::string Str = A->getAsString(Args);
5495  if (!TC.getTriple().isOSBinFormatELF())
5496  D.Diag(diag::err_drv_unsupported_opt_for_target)
5497  << Str << TC.getTripleString();
5498  CmdArgs.push_back(Args.MakeArgString(Str));
5499  }
5500 
5501  // Add the "-o out -x type src.c" flags last. This is done primarily to make
5502  // the -cc1 command easier to edit when reproducing compiler crashes.
5503  if (Output.getType() == types::TY_Dependencies) {
5504  // Handled with other dependency code.
5505  } else if (Output.isFilename()) {
5506  CmdArgs.push_back("-o");
5507  CmdArgs.push_back(Output.getFilename());
5508  } else {
5509  assert(Output.isNothing() && "Invalid output.");
5510  }
5511 
5512  addDashXForInput(Args, Input, CmdArgs);
5513 
5514  ArrayRef<InputInfo> FrontendInputs = Input;
5515  if (IsHeaderModulePrecompile)
5516  FrontendInputs = ModuleHeaderInputs;
5517  else if (Input.isNothing())
5518  FrontendInputs = {};
5519 
5520  for (const InputInfo &Input : FrontendInputs) {
5521  if (Input.isFilename())
5522  CmdArgs.push_back(Input.getFilename());
5523  else
5524  Input.getInputArg().renderAsInput(Args, CmdArgs);
5525  }
5526 
5527  // Finally add the compile command to the compilation.
5528  if (Args.hasArg(options::OPT__SLASH_fallback) &&
5529  Output.getType() == types::TY_Object &&
5530  (InputType == types::TY_C || InputType == types::TY_CXX)) {
5531  auto CLCommand =
5532  getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
5533  C.addCommand(std::make_unique<FallbackCommand>(
5534  JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
5535  } else if (Args.hasArg(options::OPT__SLASH_fallback) &&
5536  isa<PrecompileJobAction>(JA)) {
5537  // In /fallback builds, run the main compilation even if the pch generation
5538  // fails, so that the main compilation's fallback to cl.exe runs.
5539  C.addCommand(std::make_unique<ForceSuccessCommand>(JA, *this, Exec,
5540  CmdArgs, Inputs));
5541  } else {
5542  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
5543  }
5544 
5545  // Make the compile command echo its inputs for /showFilenames.
5546  if (Output.getType() == types::TY_Object &&
5547  Args.hasFlag(options::OPT__SLASH_showFilenames,
5548  options::OPT__SLASH_showFilenames_, false)) {
5549  C.getJobs().getJobs().back()->setPrintInputFilenames(true);
5550  }
5551 
5552  if (Arg *A = Args.getLastArg(options::OPT_pg))
5553  if (FPKeepKind == CodeGenOptions::FramePointerKind::None)
5554  D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
5555  << A->getAsString(Args);
5556 
5557  // Claim some arguments which clang supports automatically.
5558 
5559  // -fpch-preprocess is used with gcc to add a special marker in the output to
5560  // include the PCH file.
5561  Args.ClaimAllArgs(options::OPT_fpch_preprocess);
5562 
5563  // Claim some arguments which clang doesn't support, but we don't
5564  // care to warn the user about.
5565  Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
5566  Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
5567 
5568  // Disable warnings for clang -E -emit-llvm foo.c
5569  Args.ClaimAllArgs(options::OPT_emit_llvm);
5570 }
5571 
5573  // CAUTION! The first constructor argument ("clang") is not arbitrary,
5574  // as it is for other tools. Some operations on a Tool actually test
5575  // whether that tool is Clang based on the Tool's Name as a string.
5576  : Tool("clang", "clang frontend", TC, RF_Full) {}
5577 
5579 
5580 /// Add options related to the Objective-C runtime/ABI.
5581 ///
5582 /// Returns true if the runtime is non-fragile.
5583 ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
5584  ArgStringList &cmdArgs,
5585  RewriteKind rewriteKind) const {
5586  // Look for the controlling runtime option.
5587  Arg *runtimeArg =
5588  args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
5589  options::OPT_fobjc_runtime_EQ);
5590 
5591  // Just forward -fobjc-runtime= to the frontend. This supercedes
5592  // options about fragility.
5593  if (runtimeArg &&
5594  runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
5595  ObjCRuntime runtime;
5596  StringRef value = runtimeArg->getValue();
5597  if (runtime.tryParse(value)) {
5598  getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
5599  << value;
5600  }
5601  if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
5602  (runtime.getVersion() >= VersionTuple(2, 0)))
5603  if (!getToolChain().getTriple().isOSBinFormatELF() &&
5604  !getToolChain().getTriple().isOSBinFormatCOFF()) {
5606  diag::err_drv_gnustep_objc_runtime_incompatible_binary)
5607  << runtime.getVersion().getMajor();
5608  }
5609 
5610  runtimeArg->render(args, cmdArgs);
5611  return runtime;
5612  }
5613 
5614  // Otherwise, we'll need the ABI "version". Version numbers are
5615  // slightly confusing for historical reasons:
5616  // 1 - Traditional "fragile" ABI
5617  // 2 - Non-fragile ABI, version 1
5618  // 3 - Non-fragile ABI, version 2
5619  unsigned objcABIVersion = 1;
5620  // If -fobjc-abi-version= is present, use that to set the version.
5621  if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
5622  StringRef value = abiArg->getValue();
5623  if (value == "1")
5624  objcABIVersion = 1;
5625  else if (value == "2")
5626  objcABIVersion = 2;
5627  else if (value == "3")
5628  objcABIVersion = 3;
5629  else
5630  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
5631  } else {
5632  // Otherwise, determine if we are using the non-fragile ABI.
5633  bool nonFragileABIIsDefault =
5634  (rewriteKind == RK_NonFragile ||
5635  (rewriteKind == RK_None &&
5637  if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
5638  options::OPT_fno_objc_nonfragile_abi,
5639  nonFragileABIIsDefault)) {
5640 // Determine the non-fragile ABI version to use.
5641 #ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
5642  unsigned nonFragileABIVersion = 1;
5643 #else
5644  unsigned nonFragileABIVersion = 2;
5645 #endif
5646 
5647  if (Arg *abiArg =
5648  args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
5649  StringRef value = abiArg->getValue();
5650  if (value == "1")
5651  nonFragileABIVersion = 1;
5652  else if (value == "2")
5653  nonFragileABIVersion = 2;
5654  else
5655  getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
5656  << value;
5657  }
5658 
5659  objcABIVersion = 1 + nonFragileABIVersion;
5660  } else {
5661  objcABIVersion = 1;
5662  }
5663  }
5664 
5665  // We don't actually care about the ABI version other than whether
5666  // it's non-fragile.
5667  bool isNonFragile = objcABIVersion != 1;
5668 
5669  // If we have no runtime argument, ask the toolchain for its default runtime.
5670  // However, the rewriter only really supports the Mac runtime, so assume that.
5671  ObjCRuntime runtime;
5672  if (!runtimeArg) {
5673  switch (rewriteKind) {
5674  case RK_None:
5675  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5676  break;
5677  case RK_Fragile:
5678  runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
5679  break;
5680  case RK_NonFragile:
5681  runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5682  break;
5683  }
5684 
5685  // -fnext-runtime
5686  } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
5687  // On Darwin, make this use the default behavior for the toolchain.
5688  if (getToolChain().getTriple().isOSDarwin()) {
5689  runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
5690 
5691  // Otherwise, build for a generic macosx port.
5692  } else {
5693  runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
5694  }
5695 
5696  // -fgnu-runtime
5697  } else {
5698  assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
5699  // Legacy behaviour is to target the gnustep runtime if we are in
5700  // non-fragile mode or the GCC runtime in fragile mode.
5701  if (isNonFragile)
5702  runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
5703  else
5704  runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
5705  }
5706 
5707  cmdArgs.push_back(
5708  args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
5709  return runtime;
5710 }
5711 
5712 static bool maybeConsumeDash(const std::string &EH, size_t &I) {
5713  bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
5714  I += HaveDash;
5715  return !HaveDash;
5716 }
5717 
5718 namespace {
5719 struct EHFlags {
5720  bool Synch = false;
5721  bool Asynch = false;
5722  bool NoUnwindC = false;
5723 };
5724 } // end anonymous namespace
5725 
5726 /// /EH controls whether to run destructor cleanups when exceptions are
5727 /// thrown. There are three modifiers:
5728 /// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
5729 /// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
5730 /// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
5731 /// - c: Assume that extern "C" functions are implicitly nounwind.
5732 /// The default is /EHs-c-, meaning cleanups are disabled.
5733 static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
5734  EHFlags EH;
5735 
5736  std::vector<std::string> EHArgs =
5737  Args.getAllArgValues(options::OPT__SLASH_EH);
5738  for (auto EHVal : EHArgs) {
5739  for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
5740  switch (EHVal[I]) {
5741  case 'a':
5742  EH.Asynch = maybeConsumeDash(EHVal, I);
5743  if (EH.Asynch)
5744  EH.Synch = false;
5745  continue;
5746  case 'c':
5747  EH.NoUnwindC = maybeConsumeDash(EHVal, I);
5748  continue;
5749  case 's':
5750  EH.Synch = maybeConsumeDash(EHVal, I);
5751  if (EH.Synch)
5752  EH.Asynch = false;
5753  continue;
5754  default:
5755  break;
5756  }
5757  D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
5758  break;
5759  }
5760  }
5761  // The /GX, /GX- flags are only processed if there are not /EH flags.
5762  // The default is that /GX is not specified.
5763  if (EHArgs.empty() &&
5764  Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
5765  /*Default=*/false)) {
5766  EH.Synch = true;
5767  EH.NoUnwindC = true;
5768  }
5769 
5770  return EH;
5771 }
5772 
5773 void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
5774  ArgStringList &CmdArgs,
5776  bool *EmitCodeView) const {
5777  unsigned RTOptionID = options::OPT__SLASH_MT;
5778 
5779  if (Args.hasArg(options::OPT__SLASH_LDd))
5780  // The /LDd option implies /MTd. The dependent lib part can be overridden,
5781  // but defining _DEBUG is sticky.
5782  RTOptionID = options::OPT__SLASH_MTd;
5783 
5784  if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
5785  RTOptionID = A->getOption().getID();
5786 
5787  StringRef FlagForCRT;
5788  switch (RTOptionID) {
5789  case options::OPT__SLASH_MD:
5790  if (Args.hasArg(options::OPT__SLASH_LDd))
5791  CmdArgs.push_back("-D_DEBUG");
5792  CmdArgs.push_back("-D_MT");
5793  CmdArgs.push_back("-D_DLL");
5794  FlagForCRT = "--dependent-lib=msvcrt";
5795  break;
5796  case options::OPT__SLASH_MDd:
5797  CmdArgs.push_back("-D_DEBUG");
5798  CmdArgs.push_back("-D_MT");
5799  CmdArgs.push_back("-D_DLL");
5800  FlagForCRT = "--dependent-lib=msvcrtd";
5801  break;
5802  case options::OPT__SLASH_MT:
5803  if (Args.hasArg(options::OPT__SLASH_LDd))
5804  CmdArgs.push_back("-D_DEBUG");
5805  CmdArgs.push_back("-D_MT");
5806  CmdArgs.push_back("-flto-visibility-public-std");
5807  FlagForCRT = "--dependent-lib=libcmt";
5808  break;
5809  case options::OPT__SLASH_MTd:
5810  CmdArgs.push_back("-D_DEBUG");
5811  CmdArgs.push_back("-D_MT");
5812  CmdArgs.push_back("-flto-visibility-public-std");
5813  FlagForCRT = "--dependent-lib=libcmtd";
5814  break;
5815  default:
5816  llvm_unreachable("Unexpected option ID.");
5817  }
5818 
5819  if (Args.hasArg(options::OPT__SLASH_Zl)) {
5820  CmdArgs.push_back("-D_VC_NODEFAULTLIB");
5821  } else {
5822  CmdArgs.push_back(FlagForCRT.data());
5823 
5824  // This provides POSIX compatibility (maps 'open' to '_open'), which most
5825  // users want. The /Za flag to cl.exe turns this off, but it's not
5826  // implemented in clang.
5827  CmdArgs.push_back("--dependent-lib=oldnames");
5828  }
5829 
5830  Args.AddLastArg(CmdArgs, options::OPT_show_includes);
5831 
5832  // This controls whether or not we emit RTTI data for polymorphic types.
5833  if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
5834  /*Default=*/false))
5835  CmdArgs.push_back("-fno-rtti-data");
5836 
5837  // This controls whether or not we emit stack-protector instrumentation.
5838  // In MSVC, Buffer Security Check (/GS) is on by default.
5839  if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
5840  /*Default=*/true)) {
5841  CmdArgs.push_back("-stack-protector");
5842  CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
5843  }
5844 
5845  // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
5846  if (Arg *DebugInfoArg =
5847  Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
5848  options::OPT_gline_tables_only)) {
5849  *EmitCodeView = true;
5850  if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
5851  *DebugInfoKind = codegenoptions::LimitedDebugInfo;
5852  else
5853  *DebugInfoKind = codegenoptions::DebugLineTablesOnly;
5854  } else {
5855  *EmitCodeView = false;
5856  }
5857 
5858  const Driver &D = getToolChain().getDriver();
5859  EHFlags EH = parseClangCLEHFlags(D, Args);
5860  if (EH.Synch || EH.Asynch) {
5861  if (types::isCXX(InputType))
5862  CmdArgs.push_back("-fcxx-exceptions");
5863  CmdArgs.push_back("-fexceptions");
5864  }
5865  if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
5866  CmdArgs.push_back("-fexternc-nounwind");
5867 
5868  // /EP should expand to -E -P.
5869  if (Args.hasArg(options::OPT__SLASH_EP)) {
5870  CmdArgs.push_back("-E");
5871  CmdArgs.push_back("-P");
5872  }
5873 
5874  unsigned VolatileOptionID;
5875  if (getToolChain().getArch() == llvm::Triple::x86_64 ||
5876  getToolChain().getArch() == llvm::Triple::x86)
5877  VolatileOptionID = options::OPT__SLASH_volatile_ms;
5878  else
5879  VolatileOptionID = options::OPT__SLASH_volatile_iso;
5880 
5881  if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
5882  VolatileOptionID = A->getOption().getID();
5883 
5884  if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
5885  CmdArgs.push_back("-fms-volatile");
5886 
5887  if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
5888  options::OPT__SLASH_Zc_dllexportInlines,
5889  false)) {
5890  if (Args.hasArg(options::OPT__SLASH_fallback)) {
5891  D.Diag(clang::diag::err_drv_dllexport_inlines_and_fallback);
5892  } else {
5893  CmdArgs.push_back("-fno-dllexport-inlines");
5894  }
5895  }
5896 
5897  Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
5898  Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
5899  if (MostGeneralArg && BestCaseArg)
5900  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5901  << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
5902 
5903  if (MostGeneralArg) {
5904  Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
5905  Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
5906  Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
5907 
5908  Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
5909  Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
5910  if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
5911  D.Diag(clang::diag::err_drv_argument_not_allowed_with)
5912  << FirstConflict->getAsString(Args)
5913  << SecondConflict->getAsString(Args);
5914 
5915  if (SingleArg)
5916  CmdArgs.push_back("-fms-memptr-rep=single");
5917  else if (MultipleArg)
5918  CmdArgs.push_back("-fms-memptr-rep=multiple");
5919  else
5920  CmdArgs.push_back("-fms-memptr-rep=virtual");
5921  }
5922 
5923  // Parse the default calling convention options.
5924  if (Arg *CCArg =
5925  Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
5926  options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
5927  options::OPT__SLASH_Gregcall)) {
5928  unsigned DCCOptId = CCArg->getOption().getID();
5929  const char *DCCFlag = nullptr;
5930  bool ArchSupported = true;
5931  llvm::Triple::ArchType Arch = getToolChain().getArch();
5932  switch (DCCOptId) {
5933  case options::OPT__SLASH_Gd:
5934  DCCFlag = "-fdefault-calling-conv=cdecl";
5935  break;
5936  case options::OPT__SLASH_Gr:
5937  ArchSupported = Arch == llvm::Triple::x86;
5938  DCCFlag = "-fdefault-calling-conv=fastcall";
5939  break;
5940  case options::OPT__SLASH_Gz:
5941  ArchSupported = Arch == llvm::Triple::x86;
5942  DCCFlag = "-fdefault-calling-conv=stdcall";
5943  break;
5944  case options::OPT__SLASH_Gv:
5945  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5946  DCCFlag = "-fdefault-calling-conv=vectorcall";
5947  break;
5948  case options::OPT__SLASH_Gregcall:
5949  ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
5950  DCCFlag = "-fdefault-calling-conv=regcall";
5951  break;
5952  }
5953 
5954  // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
5955  if (ArchSupported && DCCFlag)
5956  CmdArgs.push_back(DCCFlag);
5957  }
5958 
5959  Args.AddLastArg(CmdArgs, options::OPT_vtordisp_mode_EQ);
5960 
5961  if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
5962  CmdArgs.push_back("-fdiagnostics-format");
5963  if (Args.hasArg(options::OPT__SLASH_fallback))
5964  CmdArgs.push_back("msvc-fallback");
5965  else
5966  CmdArgs.push_back("msvc");
5967  }
5968 
5969  if (Arg *A = Args.getLastArg(options::OPT__SLASH_guard)) {
5970  SmallVector<StringRef, 1> SplitArgs;
5971  StringRef(A->getValue()).split(SplitArgs, ",");
5972  bool Instrument = false;
5973  bool NoChecks = false;
5974  for (StringRef Arg : SplitArgs) {
5975  if (Arg.equals_lower("cf"))
5976  Instrument = true;
5977  else if (Arg.equals_lower("cf-"))
5978  Instrument = false;
5979  else if (Arg.equals_lower("nochecks"))
5980  NoChecks = true;
5981  else if (Arg.equals_lower("nochecks-"))
5982  NoChecks = false;
5983  else
5984  D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << Arg;
5985  }
5986  // Currently there's no support emitting CFG instrumentation; the flag only
5987  // emits the table of address-taken functions.
5988  if (Instrument || NoChecks)
5989  CmdArgs.push_back("-cfguard");
5990  }
5991 }
5992 
5993 visualstudio::Compiler *Clang::getCLFallback() const {
5994  if (!CLFallback)
5995  CLFallback.reset(new visualstudio::Compiler(getToolChain()));
5996  return CLFallback.get();
5997 }
5998 
5999 
6000 const char *Clang::getBaseInputName(const ArgList &Args,
6001  const InputInfo &Input) {
6002  return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
6003 }
6004 
6005 const char *Clang::getBaseInputStem(const ArgList &Args,
6006  const InputInfoList &Inputs) {
6007  const char *Str = getBaseInputName(Args, Inputs[0]);
6008 
6009  if (const char *End = strrchr(Str, '.'))
6010  return Args.MakeArgString(std::string(Str, End));
6011 
6012  return Str;
6013 }
6014 
6015 const char *Clang::getDependencyFileName(const ArgList &Args,
6016  const InputInfoList &Inputs) {
6017  // FIXME: Think about this more.
6018 
6019  if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
6020  SmallString<128> OutputFilename(OutputOpt->getValue());
6021  llvm::sys::path::replace_extension(OutputFilename, llvm::Twine('d'));
6022  return Args.MakeArgString(OutputFilename);
6023  }
6024 
6025  return Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".d");
6026 }
6027 
6028 // Begin ClangAs
6029 
6030 void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
6031  ArgStringList &CmdArgs) const {
6032  StringRef CPUName;
6033  StringRef ABIName;
6034  const llvm::Triple &Triple = getToolChain().getTriple();
6035  mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
6036 
6037  CmdArgs.push_back("-target-abi");
6038  CmdArgs.push_back(ABIName.data());
6039 }
6040 
6041 void ClangAs::AddX86TargetArgs(const ArgList &Args,
6042  ArgStringList &CmdArgs) const {
6043  if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
6044  StringRef Value = A->getValue();
6045  if (Value == "intel" || Value == "att") {
6046  CmdArgs.push_back("-mllvm");
6047  CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
6048  } else {
6049  getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
6050  << A->getOption().getName() << Value;
6051  }
6052  }
6053 }
6054 
6055 void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
6056  ArgStringList &CmdArgs) const {
6057  const llvm::Triple &Triple = getToolChain().getTriple();
6058  StringRef ABIName = riscv::getRISCVABI(Args, Triple);
6059 
6060  CmdArgs.push_back("-target-abi");
6061  CmdArgs.push_back(ABIName.data());
6062 }
6063 
6065  const InputInfo &Output, const InputInfoList &Inputs,
6066  const ArgList &Args,
6067  const char *LinkingOutput) const {
6068  ArgStringList CmdArgs;
6069 
6070  assert(Inputs.size() == 1 && "Unexpected number of inputs.");
6071  const InputInfo &Input = Inputs[0];
6072 
6073  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
6074  const std::string &TripleStr = Triple.getTriple();
6075  const auto &D = getToolChain().getDriver();
6076 
6077  // Don't warn about "clang -w -c foo.s"
6078  Args.ClaimAllArgs(options::OPT_w);
6079  // and "clang -emit-llvm -c foo.s"
6080  Args.ClaimAllArgs(options::OPT_emit_llvm);
6081 
6082  claimNoWarnArgs(Args);
6083 
6084  // Invoke ourselves in -cc1as mode.
6085  //
6086  // FIXME: Implement custom jobs for internal actions.
6087  CmdArgs.push_back("-cc1as");
6088 
6089  // Add the "effective" target triple.
6090  CmdArgs.push_back("-triple");
6091  CmdArgs.push_back(Args.MakeArgString(TripleStr));
6092 
6093  // Set the output mode, we currently only expect to be used as a real
6094  // assembler.
6095  CmdArgs.push_back("-filetype");
6096  CmdArgs.push_back("obj");
6097 
6098  // Set the main file name, so that debug info works even with
6099  // -save-temps or preprocessed assembly.
6100  CmdArgs.push_back("-main-file-name");
6101  CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
6102 
6103  // Add the target cpu
6104  std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
6105  if (!CPU.empty()) {
6106  CmdArgs.push_back("-target-cpu");
6107  CmdArgs.push_back(Args.MakeArgString(CPU));
6108  }
6109 
6110  // Add the target features
6111  getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
6112 
6113  // Ignore explicit -force_cpusubtype_ALL option.
6114  (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
6115 
6116  // Pass along any -I options so we get proper .include search paths.
6117  Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
6118 
6119  // Determine the original source input.
6120  const Action *SourceAction = &JA;
6121  while (SourceAction->getKind() != Action::InputClass) {
6122  assert(!SourceAction->getInputs().empty() && "unexpected root action!");
6123  SourceAction = SourceAction->getInputs()[0];
6124  }
6125 
6126  // Forward -g and handle debug info related flags, assuming we are dealing
6127  // with an actual assembly file.
6128  bool WantDebug = false;
6129  unsigned DwarfVersion = 0;
6130  Args.ClaimAllArgs(options::OPT_g_Group);
6131  if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
6132  WantDebug = !A->getOption().matches(options::OPT_g0) &&
6133  !A->getOption().matches(options::OPT_ggdb0);
6134  if (WantDebug)
6135  DwarfVersion = DwarfVersionNum(A->getSpelling());
6136  }
6137  if (DwarfVersion == 0)
6138  DwarfVersion = getToolChain().GetDefaultDwarfVersion();
6139 
6141 
6142  if (SourceAction->getType() == types::TY_Asm ||
6143  SourceAction->getType() == types::TY_PP_Asm) {
6144  // You might think that it would be ok to set DebugInfoKind outside of
6145  // the guard for source type, however there is a test which asserts
6146  // that some assembler invocation receives no -debug-info-kind,
6147  // and it's not clear whether that test is just overly restrictive.
6148  DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
6150  // Add the -fdebug-compilation-dir flag if needed.
6151  addDebugCompDirArg(Args, CmdArgs, C.getDriver().getVFS());
6152 
6153  addDebugPrefixMapArg(getToolChain().getDriver(), Args, CmdArgs);
6154 
6155  // Set the AT_producer to the clang version when using the integrated
6156  // assembler on assembly source files.
6157  CmdArgs.push_back("-dwarf-debug-producer");
6158  CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
6159 
6160  // And pass along -I options
6161  Args.AddAllArgs(CmdArgs, options::OPT_I);
6162  }
6163  RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
6164  llvm::DebuggerKind::Default);
6165  RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());
6166 
6167 
6168  // Handle -fPIC et al -- the relocation-model affects the assembler
6169  // for some targets.
6170  llvm::Reloc::Model RelocationModel;
6171  unsigned PICLevel;
6172  bool IsPIE;
6173  std::tie(RelocationModel, PICLevel, IsPIE) =
6174  ParsePICArgs(getToolChain(), Args);
6175 
6176  const char *RMName = RelocationModelName(RelocationModel);
6177  if (RMName) {
6178  CmdArgs.push_back("-mrelocation-model");
6179  CmdArgs.push_back(RMName);
6180  }
6181 
6182  // Optionally embed the -cc1as level arguments into the debug info, for build
6183  // analysis.
6184  if (getToolChain().UseDwarfDebugFlags()) {
6185  ArgStringList OriginalArgs;
6186  for (const auto &Arg : Args)
6187  Arg->render(Args, OriginalArgs);
6188 
6189  SmallString<256> Flags;
6190  const char *Exec = getToolChain().getDriver().getClangProgramPath();
6191  Flags += Exec;
6192  for (const char *OriginalArg : OriginalArgs) {
6193  SmallString<128> EscapedArg;
6194  EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
6195  Flags += " ";
6196  Flags += EscapedArg;
6197  }
6198  CmdArgs.push_back("-dwarf-debug-flags");
6199  CmdArgs.push_back(Args.MakeArgString(Flags));
6200  }
6201 
6202  // FIXME: Add -static support, once we have it.
6203 
6204  // Add target specific flags.
6205  switch (getToolChain().getArch()) {
6206  default:
6207  break;
6208 
6209  case llvm::Triple::mips:
6210  case llvm::Triple::mipsel:
6211  case llvm::Triple::mips64:
6212  case llvm::Triple::mips64el:
6213  AddMIPSTargetArgs(Args, CmdArgs);
6214  break;
6215 
6216  case llvm::Triple::x86:
6217  case llvm::Triple::x86_64:
6218  AddX86TargetArgs(Args, CmdArgs);
6219  break;
6220 
6221  case llvm::Triple::arm:
6222  case llvm::Triple::armeb:
6223  case llvm::Triple::thumb:
6224  case llvm::Triple::thumbeb:
6225  // This isn't in AddARMTargetArgs because we want to do this for assembly
6226  // only, not C/C++.
6227  if (Args.hasFlag(options::OPT_mdefault_build_attributes,
6228  options::OPT_mno_default_build_attributes, true)) {
6229  CmdArgs.push_back("-mllvm");
6230  CmdArgs.push_back("-arm-add-build-attributes");
6231  }
6232  break;
6233 
6234  case llvm::Triple::riscv32:
6235  case llvm::Triple::riscv64:
6236  AddRISCVTargetArgs(Args, CmdArgs);
6237  break;
6238  }
6239 
6240  // Consume all the warning flags. Usually this would be handled more
6241  // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
6242  // doesn't handle that so rather than warning about unused flags that are
6243  // actually used, we'll lie by omission instead.
6244  // FIXME: Stop lying and consume only the appropriate driver flags
6245  Args.ClaimAllArgs(options::OPT_W_Group);
6246 
6247  CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
6248  getToolChain().getDriver());
6249 
6250  Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
6251 
6252  assert(Output.isFilename() && "Unexpected lipo output.");
6253  CmdArgs.push_back("-o");
6254  CmdArgs.push_back(Output.getFilename());
6255 
6256  const llvm::Triple &T = getToolChain().getTriple();
6257  Arg *A;
6258  if (getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split &&
6259  T.isOSBinFormatELF()) {
6260  CmdArgs.push_back("-split-dwarf-output");
6261  CmdArgs.push_back(SplitDebugName(Args, Input, Output));
6262  }
6263 
6264  assert(Input.isFilename() && "Invalid input.");
6265  CmdArgs.push_back(Input.getFilename());
6266 
6267  const char *Exec = getToolChain().getDriver().getClangProgramPath();
6268  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
6269 }
6270 
6271 // Begin OffloadBundler
6272 
6274  const InputInfo &Output,
6275  const InputInfoList &Inputs,
6276  const llvm::opt::ArgList &TCArgs,
6277  const char *LinkingOutput) const {
6278  // The version with only one output is expected to refer to a bundling job.
6279  assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
6280 
6281  // The bundling command looks like this:
6282  // clang-offload-bundler -type=bc
6283  // -targets=host-triple,openmp-triple1,openmp-triple2
6284  // -outputs=input_file
6285  // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6286 
6287  ArgStringList CmdArgs;
6288 
6289  // Get the type.
6290  CmdArgs.push_back(TCArgs.MakeArgString(
6291  Twine("-type=") + types::getTypeTempSuffix(Output.getType())));
6292 
6293  assert(JA.getInputs().size() == Inputs.size() &&
6294  "Not have inputs for all dependence actions??");
6295 
6296  // Get the targets.
6297  SmallString<128> Triples;
6298  Triples += "-targets=";
6299  for (unsigned I = 0; I < Inputs.size(); ++I) {
6300  if (I)
6301  Triples += ',';
6302 
6303  // Find ToolChain for this input.
6305  const ToolChain *CurTC = &getToolChain();
6306  const Action *CurDep = JA.getInputs()[I];
6307 
6308  if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {
6309  CurTC = nullptr;
6310  OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {
6311  assert(CurTC == nullptr && "Expected one dependence!");
6312  CurKind = A->getOffloadingDeviceKind();
6313  CurTC = TC;
6314  });
6315  }
6316  Triples += Action::GetOffloadKindName(CurKind);
6317  Triples += '-';
6318  Triples += CurTC->getTriple().normalize();
6319  if (CurKind == Action::OFK_HIP && CurDep->getOffloadingArch()) {
6320  Triples += '-';
6321  Triples += CurDep->getOffloadingArch();
6322  }
6323  }
6324  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6325 
6326  // Get bundled file command.
6327  CmdArgs.push_back(
6328  TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename()));
6329 
6330  // Get unbundled files command.
6331  SmallString<128> UB;
6332  UB += "-inputs=";
6333  for (unsigned I = 0; I < Inputs.size(); ++I) {
6334  if (I)
6335  UB += ',';
6336 
6337  // Find ToolChain for this input.
6338  const ToolChain *CurTC = &getToolChain();
6339  if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {
6340  CurTC = nullptr;
6341  OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {
6342  assert(CurTC == nullptr && "Expected one dependence!");
6343  CurTC = TC;
6344  });
6345  }
6346  UB += CurTC->getInputFilename(Inputs[I]);
6347  }
6348  CmdArgs.push_back(TCArgs.MakeArgString(UB));
6349 
6350  // All the inputs are encoded as commands.
6351  C.addCommand(std::make_unique<Command>(
6352  JA, *this,
6353  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
6354  CmdArgs, None));
6355 }
6356 
6358  Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
6359  const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
6360  const char *LinkingOutput) const {
6361  // The version with multiple outputs is expected to refer to a unbundling job.
6362  auto &UA = cast<OffloadUnbundlingJobAction>(JA);
6363 
6364  // The unbundling command looks like this:
6365  // clang-offload-bundler -type=bc
6366  // -targets=host-triple,openmp-triple1,openmp-triple2
6367  // -inputs=input_file
6368  // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2"
6369  // -unbundle
6370 
6371  ArgStringList CmdArgs;
6372 
6373  assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
6374  InputInfo Input = Inputs.front();
6375 
6376  // Get the type.
6377  CmdArgs.push_back(TCArgs.MakeArgString(
6378  Twine("-type=") + types::getTypeTempSuffix(Input.getType())));
6379 
6380  // Get the targets.
6381  SmallString<128> Triples;
6382  Triples += "-targets=";
6383  auto DepInfo = UA.getDependentActionsInfo();
6384  for (unsigned I = 0; I < DepInfo.size(); ++I) {
6385  if (I)
6386  Triples += ',';
6387 
6388  auto &Dep = DepInfo[I];
6389  Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);
6390  Triples += '-';
6391  Triples += Dep.DependentToolChain->getTriple().normalize();
6392  if (Dep.DependentOffloadKind == Action::OFK_HIP &&
6393  !Dep.DependentBoundArch.empty()) {
6394  Triples += '-';
6395  Triples += Dep.DependentBoundArch;
6396  }
6397  }
6398 
6399  CmdArgs.push_back(TCArgs.MakeArgString(Triples));
6400 
6401  // Get bundled file command.
6402  CmdArgs.push_back(
6403  TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename()));
6404 
6405  // Get unbundled files command.
6406  SmallString<128> UB;
6407  UB += "-outputs=";
6408  for (unsigned I = 0; I < Outputs.size(); ++I) {
6409  if (I)
6410  UB += ',';
6411  UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);
6412  }
6413  CmdArgs.push_back(TCArgs.MakeArgString(UB));
6414  CmdArgs.push_back("-unbundle");
6415 
6416  // All the inputs are encoded as commands.
6417  C.addCommand(std::make_unique<Command>(
6418  JA, *this,
6419  TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),
6420  CmdArgs, None));
6421 }
6422 
6424  const InputInfo &Output,
6425  const InputInfoList &Inputs,
6426  const ArgList &Args,
6427  const char *LinkingOutput) const {
6428  ArgStringList CmdArgs;
6429 
6430  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
6431 
6432  // Add the "effective" target triple.
6433  CmdArgs.push_back("-target");
6434  CmdArgs.push_back(Args.MakeArgString(Triple.getTriple()));
6435 
6436  // Add the output file name.
6437  assert(Output.isFilename() && "Invalid output.");
6438  CmdArgs.push_back("-o");
6439  CmdArgs.push_back(Output.getFilename());
6440 
6441  // Add inputs.
6442  for (const InputInfo &I : Inputs) {
6443  assert(I.isFilename() && "Invalid input.");
6444  CmdArgs.push_back(I.getFilename());
6445  }
6446 
6447  C.addCommand(std::make_unique<Command>(
6448  JA, *this,
6449  Args.MakeArgString(getToolChain().GetProgramPath(getShortName())),
6450  CmdArgs, Inputs));
6451 }
StringRef getSysRoot() const
Returns the sysroot path.
static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T, ArgStringList &CmdArgs)
Definition: Clang.cpp:2864
DebugInfoKind
Definition: