clang  17.0.0git
Gnu.cpp
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1 //===--- Gnu.cpp - Gnu Tool and 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 "Gnu.h"
10 #include "Arch/ARM.h"
11 #include "Arch/CSKY.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 "CommonArgs.h"
18 #include "Linux.h"
19 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
20 #include "clang/Driver/Compilation.h"
21 #include "clang/Driver/Driver.h"
22 #include "clang/Driver/DriverDiagnostic.h"
23 #include "clang/Driver/Options.h"
24 #include "clang/Driver/Tool.h"
25 #include "clang/Driver/ToolChain.h"
26 #include "llvm/ADT/StringSet.h"
27 #include "llvm/ADT/Twine.h"
28 #include "llvm/Option/ArgList.h"
29 #include "llvm/Support/CodeGen.h"
30 #include "llvm/Support/Path.h"
31 #include "llvm/Support/TargetParser.h"
32 #include "llvm/Support/VirtualFileSystem.h"
33 #include <system_error>
34 
35 using namespace clang::driver;
36 using namespace clang::driver::toolchains;
37 using namespace clang;
38 using namespace llvm::opt;
39 
40 using tools::addMultilibFlag;
41 using tools::addPathIfExists;
42 
43 static bool forwardToGCC(const Option &O) {
44  // LinkerInput options have been forwarded. Don't duplicate.
45  if (O.hasFlag(options::LinkerInput))
46  return false;
47  return O.matches(options::OPT_Link_Group) || O.hasFlag(options::LinkOption);
48 }
49 
50 // Switch CPU names not recognized by GNU assembler to a close CPU that it does
51 // recognize, instead of a lower march from being picked in the absence of a cpu
52 // flag.
53 static void normalizeCPUNamesForAssembler(const ArgList &Args,
54  ArgStringList &CmdArgs) {
55  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
56  StringRef CPUArg(A->getValue());
57  if (CPUArg.equals_insensitive("krait"))
58  CmdArgs.push_back("-mcpu=cortex-a15");
59  else if (CPUArg.equals_insensitive("kryo"))
60  CmdArgs.push_back("-mcpu=cortex-a57");
61  else
62  Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
63  }
64 }
65 
66 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
67  const InputInfo &Output,
68  const InputInfoList &Inputs,
69  const ArgList &Args,
70  const char *LinkingOutput) const {
71  const Driver &D = getToolChain().getDriver();
72  ArgStringList CmdArgs;
73 
74  for (const auto &A : Args) {
75  if (forwardToGCC(A->getOption())) {
76  // It is unfortunate that we have to claim here, as this means
77  // we will basically never report anything interesting for
78  // platforms using a generic gcc, even if we are just using gcc
79  // to get to the assembler.
80  A->claim();
81 
82  A->render(Args, CmdArgs);
83  }
84  }
85 
86  RenderExtraToolArgs(JA, CmdArgs);
87 
88  // If using a driver, force the arch.
89  if (getToolChain().getTriple().isOSDarwin()) {
90  CmdArgs.push_back("-arch");
91  CmdArgs.push_back(
92  Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
93  }
94 
95  // Try to force gcc to match the tool chain we want, if we recognize
96  // the arch.
97  //
98  // FIXME: The triple class should directly provide the information we want
99  // here.
100  switch (getToolChain().getArch()) {
101  default:
102  break;
103  case llvm::Triple::x86:
104  case llvm::Triple::ppc:
105  case llvm::Triple::ppcle:
106  CmdArgs.push_back("-m32");
107  break;
108  case llvm::Triple::x86_64:
109  case llvm::Triple::ppc64:
110  case llvm::Triple::ppc64le:
111  CmdArgs.push_back("-m64");
112  break;
113  case llvm::Triple::sparcel:
114  CmdArgs.push_back("-EL");
115  break;
116  }
117 
118  if (Output.isFilename()) {
119  CmdArgs.push_back("-o");
120  CmdArgs.push_back(Output.getFilename());
121  } else {
122  assert(Output.isNothing() && "Unexpected output");
123  CmdArgs.push_back("-fsyntax-only");
124  }
125 
126  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
127 
128  // Only pass -x if gcc will understand it; otherwise hope gcc
129  // understands the suffix correctly. The main use case this would go
130  // wrong in is for linker inputs if they happened to have an odd
131  // suffix; really the only way to get this to happen is a command
132  // like '-x foobar a.c' which will treat a.c like a linker input.
133  //
134  // FIXME: For the linker case specifically, can we safely convert
135  // inputs into '-Wl,' options?
136  for (const auto &II : Inputs) {
137  // Don't try to pass LLVM or AST inputs to a generic gcc.
138  if (types::isLLVMIR(II.getType()))
139  D.Diag(clang::diag::err_drv_no_linker_llvm_support)
140  << getToolChain().getTripleString();
141  else if (II.getType() == types::TY_AST)
142  D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
143  else if (II.getType() == types::TY_ModuleFile)
144  D.Diag(diag::err_drv_no_module_support)
145  << getToolChain().getTripleString();
146 
147  if (types::canTypeBeUserSpecified(II.getType())) {
148  CmdArgs.push_back("-x");
149  CmdArgs.push_back(types::getTypeName(II.getType()));
150  }
151 
152  if (II.isFilename())
153  CmdArgs.push_back(II.getFilename());
154  else {
155  const Arg &A = II.getInputArg();
156 
157  // Reverse translate some rewritten options.
158  if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
159  CmdArgs.push_back("-lstdc++");
160  continue;
161  }
162 
163  // Don't render as input, we need gcc to do the translations.
164  A.render(Args, CmdArgs);
165  }
166  }
167 
168  const std::string &customGCCName = D.getCCCGenericGCCName();
169  const char *GCCName;
170  if (!customGCCName.empty())
171  GCCName = customGCCName.c_str();
172  else if (D.CCCIsCXX()) {
173  GCCName = "g++";
174  } else
175  GCCName = "gcc";
176 
177  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
178  C.addCommand(std::make_unique<Command>(JA, *this,
179  ResponseFileSupport::AtFileCurCP(),
180  Exec, CmdArgs, Inputs, Output));
181 }
182 
183 void tools::gcc::Preprocessor::RenderExtraToolArgs(
184  const JobAction &JA, ArgStringList &CmdArgs) const {
185  CmdArgs.push_back("-E");
186 }
187 
188 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
189  ArgStringList &CmdArgs) const {
190  const Driver &D = getToolChain().getDriver();
191 
192  switch (JA.getType()) {
193  // If -flto, etc. are present then make sure not to force assembly output.
194  case types::TY_LLVM_IR:
195  case types::TY_LTO_IR:
196  case types::TY_LLVM_BC:
197  case types::TY_LTO_BC:
198  CmdArgs.push_back("-c");
199  break;
200  // We assume we've got an "integrated" assembler in that gcc will produce an
201  // object file itself.
202  case types::TY_Object:
203  CmdArgs.push_back("-c");
204  break;
205  case types::TY_PP_Asm:
206  CmdArgs.push_back("-S");
207  break;
208  case types::TY_Nothing:
209  CmdArgs.push_back("-fsyntax-only");
210  break;
211  default:
212  D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
213  }
214 }
215 
216 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
217  ArgStringList &CmdArgs) const {
218  // The types are (hopefully) good enough.
219 }
220 
221 // On Arm the endianness of the output file is determined by the target and
222 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and
223 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a
224 // normalized triple so we must handle the flag here.
225 static bool isArmBigEndian(const llvm::Triple &Triple,
226  const ArgList &Args) {
227  bool IsBigEndian = false;
228  switch (Triple.getArch()) {
229  case llvm::Triple::armeb:
230  case llvm::Triple::thumbeb:
231  IsBigEndian = true;
232  [[fallthrough]];
233  case llvm::Triple::arm:
234  case llvm::Triple::thumb:
235  if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
236  options::OPT_mbig_endian))
237  IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
238  break;
239  default:
240  break;
241  }
242  return IsBigEndian;
243 }
244 
245 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
246  switch (T.getArch()) {
247  case llvm::Triple::x86:
248  if (T.isOSIAMCU())
249  return "elf_iamcu";
250  return "elf_i386";
251  case llvm::Triple::aarch64:
252  return "aarch64linux";
253  case llvm::Triple::aarch64_be:
254  return "aarch64linuxb";
255  case llvm::Triple::arm:
256  case llvm::Triple::thumb:
257  case llvm::Triple::armeb:
258  case llvm::Triple::thumbeb:
259  return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi";
260  case llvm::Triple::m68k:
261  return "m68kelf";
262  case llvm::Triple::ppc:
263  if (T.isOSLinux())
264  return "elf32ppclinux";
265  return "elf32ppc";
266  case llvm::Triple::ppcle:
267  if (T.isOSLinux())
268  return "elf32lppclinux";
269  return "elf32lppc";
270  case llvm::Triple::ppc64:
271  return "elf64ppc";
272  case llvm::Triple::ppc64le:
273  return "elf64lppc";
274  case llvm::Triple::riscv32:
275  return "elf32lriscv";
276  case llvm::Triple::riscv64:
277  return "elf64lriscv";
278  case llvm::Triple::sparc:
279  case llvm::Triple::sparcel:
280  return "elf32_sparc";
281  case llvm::Triple::sparcv9:
282  return "elf64_sparc";
283  case llvm::Triple::loongarch32:
284  return "elf32loongarch";
285  case llvm::Triple::loongarch64:
286  return "elf64loongarch";
287  case llvm::Triple::mips:
288  return "elf32btsmip";
289  case llvm::Triple::mipsel:
290  return "elf32ltsmip";
291  case llvm::Triple::mips64:
292  if (tools::mips::hasMipsAbiArg(Args, "n32") ||
293  T.getEnvironment() == llvm::Triple::GNUABIN32)
294  return "elf32btsmipn32";
295  return "elf64btsmip";
296  case llvm::Triple::mips64el:
297  if (tools::mips::hasMipsAbiArg(Args, "n32") ||
298  T.getEnvironment() == llvm::Triple::GNUABIN32)
299  return "elf32ltsmipn32";
300  return "elf64ltsmip";
301  case llvm::Triple::systemz:
302  return "elf64_s390";
303  case llvm::Triple::x86_64:
304  if (T.isX32())
305  return "elf32_x86_64";
306  return "elf_x86_64";
307  case llvm::Triple::ve:
308  return "elf64ve";
309  case llvm::Triple::csky:
310  return "cskyelf_linux";
311  default:
312  return nullptr;
313  }
314 }
315 
316 static bool getPIE(const ArgList &Args, const ToolChain &TC) {
317  if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) ||
318  Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie))
319  return false;
320 
321  Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie,
322  options::OPT_nopie);
323  if (!A)
324  return TC.isPIEDefault(Args);
325  return A->getOption().matches(options::OPT_pie);
326 }
327 
328 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) {
329  bool HasStaticPIE = Args.hasArg(options::OPT_static_pie);
330  // -no-pie is an alias for -nopie. So, handling -nopie takes care of
331  // -no-pie as well.
332  if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) {
333  const Driver &D = TC.getDriver();
334  const llvm::opt::OptTable &Opts = D.getOpts();
335  StringRef StaticPIEName = Opts.getOptionName(options::OPT_static_pie);
336  StringRef NoPIEName = Opts.getOptionName(options::OPT_nopie);
337  D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName;
338  }
339  return HasStaticPIE;
340 }
341 
342 static bool getStatic(const ArgList &Args) {
343  return Args.hasArg(options::OPT_static) &&
344  !Args.hasArg(options::OPT_static_pie);
345 }
346 
347 void tools::gnutools::StaticLibTool::ConstructJob(
348  Compilation &C, const JobAction &JA, const InputInfo &Output,
349  const InputInfoList &Inputs, const ArgList &Args,
350  const char *LinkingOutput) const {
351  const Driver &D = getToolChain().getDriver();
352 
353  // Silence warning for "clang -g foo.o -o foo"
354  Args.ClaimAllArgs(options::OPT_g_Group);
355  // and "clang -emit-llvm foo.o -o foo"
356  Args.ClaimAllArgs(options::OPT_emit_llvm);
357  // and for "clang -w foo.o -o foo". Other warning options are already
358  // handled somewhere else.
359  Args.ClaimAllArgs(options::OPT_w);
360  // Silence warnings when linking C code with a C++ '-stdlib' argument.
361  Args.ClaimAllArgs(options::OPT_stdlib_EQ);
362 
363  // ar tool command "llvm-ar <options> <output_file> <input_files>".
364  ArgStringList CmdArgs;
365  // Create and insert file members with a deterministic index.
366  CmdArgs.push_back("rcsD");
367  CmdArgs.push_back(Output.getFilename());
368 
369  for (const auto &II : Inputs) {
370  if (II.isFilename()) {
371  CmdArgs.push_back(II.getFilename());
372  }
373  }
374 
375  // Delete old output archive file if it already exists before generating a new
376  // archive file.
377  auto OutputFileName = Output.getFilename();
378  if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) {
379  if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) {
380  D.Diag(diag::err_drv_unable_to_remove_file) << EC.message();
381  return;
382  }
383  }
384 
385  const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath());
386  C.addCommand(std::make_unique<Command>(JA, *this,
387  ResponseFileSupport::AtFileCurCP(),
388  Exec, CmdArgs, Inputs, Output));
389 }
390 
391 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
392  const InputInfo &Output,
393  const InputInfoList &Inputs,
394  const ArgList &Args,
395  const char *LinkingOutput) const {
396  // FIXME: The Linker class constructor takes a ToolChain and not a
397  // Generic_ELF, so the static_cast might return a reference to a invalid
398  // instance (see PR45061). Ideally, the Linker constructor needs to take a
399  // Generic_ELF instead.
400  const toolchains::Generic_ELF &ToolChain =
401  static_cast<const toolchains::Generic_ELF &>(getToolChain());
402  const Driver &D = ToolChain.getDriver();
403 
404  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
405 
406  const llvm::Triple::ArchType Arch = ToolChain.getArch();
407  const bool isAndroid = ToolChain.getTriple().isAndroid();
408  const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
409  const bool IsVE = ToolChain.getTriple().isVE();
410  const bool IsPIE = getPIE(Args, ToolChain);
411  const bool IsStaticPIE = getStaticPIE(Args, ToolChain);
412  const bool IsStatic = getStatic(Args);
413  const bool HasCRTBeginEndFiles =
414  ToolChain.getTriple().hasEnvironment() ||
415  (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
416 
417  ArgStringList CmdArgs;
418 
419  // Silence warning for "clang -g foo.o -o foo"
420  Args.ClaimAllArgs(options::OPT_g_Group);
421  // and "clang -emit-llvm foo.o -o foo"
422  Args.ClaimAllArgs(options::OPT_emit_llvm);
423  // and for "clang -w foo.o -o foo". Other warning options are already
424  // handled somewhere else.
425  Args.ClaimAllArgs(options::OPT_w);
426 
427  if (!D.SysRoot.empty())
428  CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
429 
430  if (IsPIE)
431  CmdArgs.push_back("-pie");
432 
433  if (IsStaticPIE) {
434  CmdArgs.push_back("-static");
435  CmdArgs.push_back("-pie");
436  CmdArgs.push_back("--no-dynamic-linker");
437  CmdArgs.push_back("-z");
438  CmdArgs.push_back("text");
439  }
440 
441  if (Args.hasArg(options::OPT_rdynamic))
442  CmdArgs.push_back("-export-dynamic");
443 
444  if (Args.hasArg(options::OPT_s))
445  CmdArgs.push_back("-s");
446 
447  if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) {
448  bool IsBigEndian = isArmBigEndian(Triple, Args);
449  if (IsBigEndian)
450  arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
451  IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be;
452  CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL");
453  }
454 
455  // Most Android ARM64 targets should enable the linker fix for erratum
456  // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
457  if (Arch == llvm::Triple::aarch64 && isAndroid) {
458  std::string CPU = getCPUName(D, Args, Triple);
459  if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
460  CmdArgs.push_back("--fix-cortex-a53-843419");
461  }
462 
463  ToolChain.addExtraOpts(CmdArgs);
464 
465  CmdArgs.push_back("--eh-frame-hdr");
466 
467  if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
468  CmdArgs.push_back("-m");
469  CmdArgs.push_back(LDMOption);
470  } else {
471  D.Diag(diag::err_target_unknown_triple) << Triple.str();
472  return;
473  }
474  if (Triple.isRISCV())
475  CmdArgs.push_back("-X");
476 
477  if (Args.hasArg(options::OPT_shared))
478  CmdArgs.push_back("-shared");
479 
480  if (IsStatic) {
481  CmdArgs.push_back("-static");
482  } else {
483  if (Args.hasArg(options::OPT_rdynamic))
484  CmdArgs.push_back("-export-dynamic");
485 
486  if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE &&
487  !Args.hasArg(options::OPT_r)) {
488  CmdArgs.push_back("-dynamic-linker");
489  CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) +
490  ToolChain.getDynamicLinker(Args)));
491  }
492  }
493 
494  CmdArgs.push_back("-o");
495  CmdArgs.push_back(Output.getFilename());
496 
497  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
498  options::OPT_r)) {
499  if (!isAndroid && !IsIAMCU) {
500  const char *crt1 = nullptr;
501  if (!Args.hasArg(options::OPT_shared)) {
502  if (Args.hasArg(options::OPT_pg))
503  crt1 = "gcrt1.o";
504  else if (IsPIE)
505  crt1 = "Scrt1.o";
506  else if (IsStaticPIE)
507  crt1 = "rcrt1.o";
508  else
509  crt1 = "crt1.o";
510  }
511  if (crt1)
512  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
513 
514  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
515  }
516 
517  if (IsVE) {
518  CmdArgs.push_back("-z");
519  CmdArgs.push_back("max-page-size=0x4000000");
520  }
521 
522  if (IsIAMCU)
523  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
524  else if (HasCRTBeginEndFiles) {
525  std::string P;
526  if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
527  !isAndroid) {
528  std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin",
529  ToolChain::FT_Object);
530  if (ToolChain.getVFS().exists(crtbegin))
531  P = crtbegin;
532  }
533  if (P.empty()) {
534  const char *crtbegin;
535  if (Args.hasArg(options::OPT_shared))
536  crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
537  else if (IsStatic)
538  crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
539  else if (IsPIE || IsStaticPIE)
540  crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
541  else
542  crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
543  P = ToolChain.GetFilePath(crtbegin);
544  }
545  CmdArgs.push_back(Args.MakeArgString(P));
546  }
547 
548  // Add crtfastmath.o if available and fast math is enabled.
549  ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs);
550  }
551 
552  Args.AddAllArgs(CmdArgs, options::OPT_L);
553  Args.AddAllArgs(CmdArgs, options::OPT_u);
554 
555  ToolChain.AddFilePathLibArgs(Args, CmdArgs);
556 
557  if (D.isUsingLTO()) {
558  assert(!Inputs.empty() && "Must have at least one input.");
559  addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0],
560  D.getLTOMode() == LTOK_Thin);
561  }
562 
563  if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
564  CmdArgs.push_back("--no-demangle");
565 
566  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
567  bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
568  addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs);
569  AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
570 
571  addHIPRuntimeLibArgs(ToolChain, Args, CmdArgs);
572 
573  // The profile runtime also needs access to system libraries.
574  getToolChain().addProfileRTLibs(Args, CmdArgs);
575 
576  if (D.CCCIsCXX() &&
577  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
578  options::OPT_r)) {
579  if (ToolChain.ShouldLinkCXXStdlib(Args)) {
580  bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
581  !Args.hasArg(options::OPT_static);
582  if (OnlyLibstdcxxStatic)
583  CmdArgs.push_back("-Bstatic");
584  ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
585  if (OnlyLibstdcxxStatic)
586  CmdArgs.push_back("-Bdynamic");
587  }
588  CmdArgs.push_back("-lm");
589  }
590 
591  // Silence warnings when linking C code with a C++ '-stdlib' argument.
592  Args.ClaimAllArgs(options::OPT_stdlib_EQ);
593 
594  // Additional linker set-up and flags for Fortran. This is required in order
595  // to generate executables. As Fortran runtime depends on the C runtime,
596  // these dependencies need to be listed before the C runtime below (i.e.
597  // AddRuntTimeLibs).
598  if (D.IsFlangMode()) {
599  addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs);
600  addFortranRuntimeLibs(ToolChain, CmdArgs);
601  CmdArgs.push_back("-lm");
602  }
603 
604  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_r)) {
605  if (!Args.hasArg(options::OPT_nodefaultlibs)) {
606  if (IsStatic || IsStaticPIE)
607  CmdArgs.push_back("--start-group");
608 
609  if (NeedsSanitizerDeps)
610  linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
611 
612  if (NeedsXRayDeps)
613  linkXRayRuntimeDeps(ToolChain, CmdArgs);
614 
615  bool WantPthread = Args.hasArg(options::OPT_pthread) ||
616  Args.hasArg(options::OPT_pthreads);
617 
618  // Use the static OpenMP runtime with -static-openmp
619  bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
620  !Args.hasArg(options::OPT_static);
621 
622  // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
623  // require librt. Most modern Linux platforms do, but some may not.
624  if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP,
625  JA.isHostOffloading(Action::OFK_OpenMP),
626  /* GompNeedsRT= */ true))
627  // OpenMP runtimes implies pthreads when using the GNU toolchain.
628  // FIXME: Does this really make sense for all GNU toolchains?
629  WantPthread = true;
630 
631  AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
632 
633  // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so
634  // forcibly link with libatomic as a workaround.
635  // TODO: Issue #41880 and D118021.
636  if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) {
637  CmdArgs.push_back("--push-state");
638  CmdArgs.push_back("--as-needed");
639  CmdArgs.push_back("-latomic");
640  CmdArgs.push_back("--pop-state");
641  }
642 
643  if (WantPthread && !isAndroid)
644  CmdArgs.push_back("-lpthread");
645 
646  if (Args.hasArg(options::OPT_fsplit_stack))
647  CmdArgs.push_back("--wrap=pthread_create");
648 
649  if (!Args.hasArg(options::OPT_nolibc))
650  CmdArgs.push_back("-lc");
651 
652  // Add IAMCU specific libs, if needed.
653  if (IsIAMCU)
654  CmdArgs.push_back("-lgloss");
655 
656  if (IsStatic || IsStaticPIE)
657  CmdArgs.push_back("--end-group");
658  else
659  AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
660 
661  // Add IAMCU specific libs (outside the group), if needed.
662  if (IsIAMCU) {
663  CmdArgs.push_back("--as-needed");
664  CmdArgs.push_back("-lsoftfp");
665  CmdArgs.push_back("--no-as-needed");
666  }
667  }
668 
669  if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
670  if (HasCRTBeginEndFiles) {
671  std::string P;
672  if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
673  !isAndroid) {
674  std::string crtend = ToolChain.getCompilerRT(Args, "crtend",
675  ToolChain::FT_Object);
676  if (ToolChain.getVFS().exists(crtend))
677  P = crtend;
678  }
679  if (P.empty()) {
680  const char *crtend;
681  if (Args.hasArg(options::OPT_shared))
682  crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
683  else if (IsPIE || IsStaticPIE)
684  crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
685  else
686  crtend = isAndroid ? "crtend_android.o" : "crtend.o";
687  P = ToolChain.GetFilePath(crtend);
688  }
689  CmdArgs.push_back(Args.MakeArgString(P));
690  }
691  if (!isAndroid)
692  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
693  }
694  }
695 
696  Args.AddAllArgs(CmdArgs, options::OPT_T);
697 
698  const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
699  C.addCommand(std::make_unique<Command>(JA, *this,
700  ResponseFileSupport::AtFileCurCP(),
701  Exec, CmdArgs, Inputs, Output));
702 }
703 
704 void tools::gnutools::Assembler::ConstructJob(Compilation &C,
705  const JobAction &JA,
706  const InputInfo &Output,
707  const InputInfoList &Inputs,
708  const ArgList &Args,
709  const char *LinkingOutput) const {
710  const auto &D = getToolChain().getDriver();
711 
712  claimNoWarnArgs(Args);
713 
714  ArgStringList CmdArgs;
715 
716  llvm::Reloc::Model RelocationModel;
717  unsigned PICLevel;
718  bool IsPIE;
719  const char *DefaultAssembler = "as";
720  std::tie(RelocationModel, PICLevel, IsPIE) =
721  ParsePICArgs(getToolChain(), Args);
722 
723  if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
724  if (A->getOption().getID() == options::OPT_gz) {
725  CmdArgs.push_back("--compress-debug-sections");
726  } else {
727  StringRef Value = A->getValue();
728  if (Value == "none" || Value == "zlib" || Value == "zstd") {
729  CmdArgs.push_back(
730  Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
731  } else {
732  D.Diag(diag::err_drv_unsupported_option_argument)
733  << A->getSpelling() << Value;
734  }
735  }
736  }
737 
738  switch (getToolChain().getArch()) {
739  default:
740  break;
741  // Add --32/--64 to make sure we get the format we want.
742  // This is incomplete
743  case llvm::Triple::x86:
744  CmdArgs.push_back("--32");
745  break;
746  case llvm::Triple::x86_64:
747  if (getToolChain().getTriple().isX32())
748  CmdArgs.push_back("--x32");
749  else
750  CmdArgs.push_back("--64");
751  break;
752  case llvm::Triple::ppc: {
753  CmdArgs.push_back("-a32");
754  CmdArgs.push_back("-mppc");
755  CmdArgs.push_back("-mbig-endian");
756  CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
757  getCPUName(D, Args, getToolChain().getTriple())));
758  break;
759  }
760  case llvm::Triple::ppcle: {
761  CmdArgs.push_back("-a32");
762  CmdArgs.push_back("-mppc");
763  CmdArgs.push_back("-mlittle-endian");
764  CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
765  getCPUName(D, Args, getToolChain().getTriple())));
766  break;
767  }
768  case llvm::Triple::ppc64: {
769  CmdArgs.push_back("-a64");
770  CmdArgs.push_back("-mppc64");
771  CmdArgs.push_back("-mbig-endian");
772  CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
773  getCPUName(D, Args, getToolChain().getTriple())));
774  break;
775  }
776  case llvm::Triple::ppc64le: {
777  CmdArgs.push_back("-a64");
778  CmdArgs.push_back("-mppc64");
779  CmdArgs.push_back("-mlittle-endian");
780  CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
781  getCPUName(D, Args, getToolChain().getTriple())));
782  break;
783  }
784  case llvm::Triple::riscv32:
785  case llvm::Triple::riscv64: {
786  StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple());
787  CmdArgs.push_back("-mabi");
788  CmdArgs.push_back(ABIName.data());
789  StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple());
790  CmdArgs.push_back("-march");
791  CmdArgs.push_back(MArchName.data());
792  if (!Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true))
793  Args.addOptOutFlag(CmdArgs, options::OPT_mrelax, options::OPT_mno_relax);
794  break;
795  }
796  case llvm::Triple::sparc:
797  case llvm::Triple::sparcel: {
798  CmdArgs.push_back("-32");
799  std::string CPU = getCPUName(D, Args, getToolChain().getTriple());
800  CmdArgs.push_back(
801  sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
802  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
803  break;
804  }
805  case llvm::Triple::sparcv9: {
806  CmdArgs.push_back("-64");
807  std::string CPU = getCPUName(D, Args, getToolChain().getTriple());
808  CmdArgs.push_back(
809  sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
810  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
811  break;
812  }
813  case llvm::Triple::arm:
814  case llvm::Triple::armeb:
815  case llvm::Triple::thumb:
816  case llvm::Triple::thumbeb: {
817  const llvm::Triple &Triple2 = getToolChain().getTriple();
818  CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL");
819  switch (Triple2.getSubArch()) {
820  case llvm::Triple::ARMSubArch_v7:
821  CmdArgs.push_back("-mfpu=neon");
822  break;
823  case llvm::Triple::ARMSubArch_v8:
824  CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
825  break;
826  default:
827  break;
828  }
829 
830  switch (arm::getARMFloatABI(getToolChain(), Args)) {
831  case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
832  case arm::FloatABI::Soft:
833  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
834  break;
835  case arm::FloatABI::SoftFP:
836  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
837  break;
838  case arm::FloatABI::Hard:
839  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
840  break;
841  }
842 
843  Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
844  normalizeCPUNamesForAssembler(Args, CmdArgs);
845 
846  Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
847  break;
848  }
849  case llvm::Triple::aarch64:
850  case llvm::Triple::aarch64_be: {
851  CmdArgs.push_back(
852  getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
853  Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
854  normalizeCPUNamesForAssembler(Args, CmdArgs);
855 
856  break;
857  }
858  case llvm::Triple::mips:
859  case llvm::Triple::mipsel:
860  case llvm::Triple::mips64:
861  case llvm::Triple::mips64el: {
862  StringRef CPUName;
863  StringRef ABIName;
864  mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
865  ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
866 
867  CmdArgs.push_back("-march");
868  CmdArgs.push_back(CPUName.data());
869 
870  CmdArgs.push_back("-mabi");
871  CmdArgs.push_back(ABIName.data());
872 
873  // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
874  // or -mshared (not implemented) is in effect.
875  if (RelocationModel == llvm::Reloc::Static)
876  CmdArgs.push_back("-mno-shared");
877 
878  // LLVM doesn't support -mplt yet and acts as if it is always given.
879  // However, -mplt has no effect with the N64 ABI.
880  if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
881  CmdArgs.push_back("-call_nonpic");
882 
883  if (getToolChain().getTriple().isLittleEndian())
884  CmdArgs.push_back("-EL");
885  else
886  CmdArgs.push_back("-EB");
887 
888  if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
889  if (StringRef(A->getValue()) == "2008")
890  CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
891  }
892 
893  // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
894  if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
895  options::OPT_mfp64)) {
896  A->claim();
897  A->render(Args, CmdArgs);
898  } else if (mips::shouldUseFPXX(
899  Args, getToolChain().getTriple(), CPUName, ABIName,
900  mips::getMipsFloatABI(getToolChain().getDriver(), Args,
901  getToolChain().getTriple())))
902  CmdArgs.push_back("-mfpxx");
903 
904  // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
905  // -mno-mips16 is actually -no-mips16.
906  if (Arg *A =
907  Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
908  if (A->getOption().matches(options::OPT_mips16)) {
909  A->claim();
910  A->render(Args, CmdArgs);
911  } else {
912  A->claim();
913  CmdArgs.push_back("-no-mips16");
914  }
915  }
916 
917  Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
918  options::OPT_mno_micromips);
919  Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
920  Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
921 
922  if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
923  // Do not use AddLastArg because not all versions of MIPS assembler
924  // support -mmsa / -mno-msa options.
925  if (A->getOption().matches(options::OPT_mmsa))
926  CmdArgs.push_back(Args.MakeArgString("-mmsa"));
927  }
928 
929  Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
930  options::OPT_msoft_float);
931 
932  Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
933  options::OPT_msingle_float);
934 
935  Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
936  options::OPT_mno_odd_spreg);
937 
938  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
939  break;
940  }
941  case llvm::Triple::systemz: {
942  // Always pass an -march option, since our default of z10 is later
943  // than the GNU assembler's default.
944  std::string CPUName = systemz::getSystemZTargetCPU(Args);
945  CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
946  break;
947  }
948  case llvm::Triple::ve:
949  DefaultAssembler = "nas";
950  }
951 
952  for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
953  options::OPT_fdebug_prefix_map_EQ)) {
954  StringRef Map = A->getValue();
955  if (!Map.contains('='))
956  D.Diag(diag::err_drv_invalid_argument_to_option)
957  << Map << A->getOption().getName();
958  else {
959  CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
960  CmdArgs.push_back(Args.MakeArgString(Map));
961  }
962  A->claim();
963  }
964 
965  Args.AddAllArgs(CmdArgs, options::OPT_I);
966  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
967 
968  CmdArgs.push_back("-o");
969  CmdArgs.push_back(Output.getFilename());
970 
971  for (const auto &II : Inputs)
972  CmdArgs.push_back(II.getFilename());
973 
974  if (Arg *A = Args.getLastArg(options::OPT_g_Flag, options::OPT_gN_Group,
975  options::OPT_gdwarf_2, options::OPT_gdwarf_3,
976  options::OPT_gdwarf_4, options::OPT_gdwarf_5,
977  options::OPT_gdwarf))
978  if (!A->getOption().matches(options::OPT_g0)) {
979  Args.AddLastArg(CmdArgs, options::OPT_g_Flag);
980 
981  unsigned DwarfVersion = getDwarfVersion(getToolChain(), Args);
982  CmdArgs.push_back(Args.MakeArgString("-gdwarf-" + Twine(DwarfVersion)));
983  }
984 
985  const char *Exec =
986  Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler));
987  C.addCommand(std::make_unique<Command>(JA, *this,
988  ResponseFileSupport::AtFileCurCP(),
989  Exec, CmdArgs, Inputs, Output));
990 
991  // Handle the debug info splitting at object creation time if we're
992  // creating an object.
993  // TODO: Currently only works on linux with newer objcopy.
994  if (Args.hasArg(options::OPT_gsplit_dwarf) &&
995  getToolChain().getTriple().isOSLinux())
996  SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
997  SplitDebugName(JA, Args, Inputs[0], Output));
998 }
999 
1000 namespace {
1001 // Filter to remove Multilibs that don't exist as a suffix to Path
1002 class FilterNonExistent {
1003  StringRef Base, File;
1004  llvm::vfs::FileSystem &VFS;
1005 
1006 public:
1007  FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
1008  : Base(Base), File(File), VFS(VFS) {}
1009  bool operator()(const Multilib &M) {
1010  return !VFS.exists(Base + M.gccSuffix() + File);
1011  }
1012 };
1013 } // end anonymous namespace
1014 
1015 static bool isSoftFloatABI(const ArgList &Args) {
1016  Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
1017  options::OPT_mfloat_abi_EQ);
1018  if (!A)
1019  return false;
1020 
1021  return A->getOption().matches(options::OPT_msoft_float) ||
1022  (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
1023  A->getValue() == StringRef("soft"));
1024 }
1025 
1026 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
1027  return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
1028 }
1029 
1030 static bool isMipsEL(llvm::Triple::ArchType Arch) {
1031  return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
1032 }
1033 
1034 static bool isMips16(const ArgList &Args) {
1035  Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
1036  return A && A->getOption().matches(options::OPT_mips16);
1037 }
1038 
1039 static bool isMicroMips(const ArgList &Args) {
1040  Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
1041  return A && A->getOption().matches(options::OPT_mmicromips);
1042 }
1043 
1044 static bool isMSP430(llvm::Triple::ArchType Arch) {
1045  return Arch == llvm::Triple::msp430;
1046 }
1047 
1048 static Multilib makeMultilib(StringRef commonSuffix) {
1049  return Multilib(commonSuffix, commonSuffix, commonSuffix);
1050 }
1051 
1052 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
1053  FilterNonExistent &NonExistent,
1054  DetectedMultilibs &Result) {
1055  // Check for Code Sourcery toolchain multilibs
1056  MultilibSet CSMipsMultilibs;
1057  {
1058  auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
1059 
1060  auto MArchMicroMips =
1061  makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
1062 
1063  auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
1064 
1065  auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1066 
1067  auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
1068 
1069  auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1070 
1071  auto DefaultFloat =
1072  makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
1073 
1074  auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1075 
1076  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1077 
1078  // Note that this one's osSuffix is ""
1079  auto MAbi64 = makeMultilib("")
1080  .gccSuffix("/64")
1081  .includeSuffix("/64")
1082  .flag("+mabi=n64")
1083  .flag("-mabi=n32")
1084  .flag("-m32");
1085 
1086  CSMipsMultilibs =
1087  MultilibSet()
1088  .Either(MArchMips16, MArchMicroMips, MArchDefault)
1089  .Maybe(UCLibc)
1090  .Either(SoftFloat, Nan2008, DefaultFloat)
1091  .FilterOut("/micromips/nan2008")
1092  .FilterOut("/mips16/nan2008")
1093  .Either(BigEndian, LittleEndian)
1094  .Maybe(MAbi64)
1095  .FilterOut("/mips16.*/64")
1096  .FilterOut("/micromips.*/64")
1097  .FilterOut(NonExistent)
1098  .setIncludeDirsCallback([](const Multilib &M) {
1099  std::vector<std::string> Dirs({"/include"});
1100  if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1101  Dirs.push_back(
1102  "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1103  else
1104  Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
1105  return Dirs;
1106  });
1107  }
1108 
1109  MultilibSet DebianMipsMultilibs;
1110  {
1111  Multilib MAbiN32 =
1112  Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
1113 
1114  Multilib M64 = Multilib()
1115  .gccSuffix("/64")
1116  .includeSuffix("/64")
1117  .flag("+m64")
1118  .flag("-m32")
1119  .flag("-mabi=n32");
1120 
1121  Multilib M32 =
1122  Multilib().gccSuffix("/32").flag("-m64").flag("+m32").flag("-mabi=n32");
1123 
1124  DebianMipsMultilibs =
1125  MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
1126  }
1127 
1128  // Sort candidates. Toolchain that best meets the directories tree goes first.
1129  // Then select the first toolchains matches command line flags.
1130  MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1131  if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1132  std::iter_swap(Candidates, Candidates + 1);
1133  for (const MultilibSet *Candidate : Candidates) {
1134  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1135  if (Candidate == &DebianMipsMultilibs)
1136  Result.BiarchSibling = Multilib();
1137  Result.Multilibs = *Candidate;
1138  return true;
1139  }
1140  }
1141  return false;
1142 }
1143 
1144 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path,
1145  const Multilib::flags_list &Flags,
1146  FilterNonExistent &NonExistent,
1147  DetectedMultilibs &Result) {
1148 
1149  MultilibSet AndroidMipsMultilibs =
1150  MultilibSet()
1151  .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
1152  .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
1153  .FilterOut(NonExistent);
1154 
1155  MultilibSet AndroidMipselMultilibs =
1156  MultilibSet()
1157  .Either(Multilib().flag("+march=mips32"),
1158  Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1159  Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1160  .FilterOut(NonExistent);
1161 
1162  MultilibSet AndroidMips64elMultilibs =
1163  MultilibSet()
1164  .Either(
1165  Multilib().flag("+march=mips64r6"),
1166  Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
1167  Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1168  Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1169  .FilterOut(NonExistent);
1170 
1171  MultilibSet *MS = &AndroidMipsMultilibs;
1172  if (VFS.exists(Path + "/mips-r6"))
1173  MS = &AndroidMipselMultilibs;
1174  else if (VFS.exists(Path + "/32"))
1175  MS = &AndroidMips64elMultilibs;
1176  if (MS->select(Flags, Result.SelectedMultilib)) {
1177  Result.Multilibs = *MS;
1178  return true;
1179  }
1180  return false;
1181 }
1182 
1183 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags,
1184  FilterNonExistent &NonExistent,
1185  DetectedMultilibs &Result) {
1186  // Musl toolchain multilibs
1187  MultilibSet MuslMipsMultilibs;
1188  {
1189  auto MArchMipsR2 = makeMultilib("")
1190  .osSuffix("/mips-r2-hard-musl")
1191  .flag("+EB")
1192  .flag("-EL")
1193  .flag("+march=mips32r2");
1194 
1195  auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1196  .flag("-EB")
1197  .flag("+EL")
1198  .flag("+march=mips32r2");
1199 
1200  MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1201 
1202  // Specify the callback that computes the include directories.
1203  MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1204  return std::vector<std::string>(
1205  {"/../sysroot" + M.osSuffix() + "/usr/include"});
1206  });
1207  }
1208  if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1209  Result.Multilibs = MuslMipsMultilibs;
1210  return true;
1211  }
1212  return false;
1213 }
1214 
1215 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags,
1216  FilterNonExistent &NonExistent,
1217  DetectedMultilibs &Result) {
1218  // CodeScape MTI toolchain v1.2 and early.
1219  MultilibSet MtiMipsMultilibsV1;
1220  {
1221  auto MArchMips32 = makeMultilib("/mips32")
1222  .flag("+m32")
1223  .flag("-m64")
1224  .flag("-mmicromips")
1225  .flag("+march=mips32");
1226 
1227  auto MArchMicroMips = makeMultilib("/micromips")
1228  .flag("+m32")
1229  .flag("-m64")
1230  .flag("+mmicromips");
1231 
1232  auto MArchMips64r2 = makeMultilib("/mips64r2")
1233  .flag("-m32")
1234  .flag("+m64")
1235  .flag("+march=mips64r2");
1236 
1237  auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1238  "-march=mips64r2");
1239 
1240  auto MArchDefault = makeMultilib("")
1241  .flag("+m32")
1242  .flag("-m64")
1243  .flag("-mmicromips")
1244  .flag("+march=mips32r2");
1245 
1246  auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1247 
1248  auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1249 
1250  auto MAbi64 =
1251  makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1252 
1253  auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1254 
1255  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1256 
1257  auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1258 
1259  auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1260 
1261  MtiMipsMultilibsV1 =
1262  MultilibSet()
1263  .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1264  MArchDefault)
1265  .Maybe(UCLibc)
1266  .Maybe(Mips16)
1267  .FilterOut("/mips64/mips16")
1268  .FilterOut("/mips64r2/mips16")
1269  .FilterOut("/micromips/mips16")
1270  .Maybe(MAbi64)
1271  .FilterOut("/micromips/64")
1272  .FilterOut("/mips32/64")
1273  .FilterOut("^/64")
1274  .FilterOut("/mips16/64")
1275  .Either(BigEndian, LittleEndian)
1276  .Maybe(SoftFloat)
1277  .Maybe(Nan2008)
1278  .FilterOut(".*sof/nan2008")
1279  .FilterOut(NonExistent)
1280  .setIncludeDirsCallback([](const Multilib &M) {
1281  std::vector<std::string> Dirs({"/include"});
1282  if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1283  Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1284  else
1285  Dirs.push_back("/../../../../sysroot/usr/include");
1286  return Dirs;
1287  });
1288  }
1289 
1290  // CodeScape IMG toolchain starting from v1.3.
1291  MultilibSet MtiMipsMultilibsV2;
1292  {
1293  auto BeHard = makeMultilib("/mips-r2-hard")
1294  .flag("+EB")
1295  .flag("-msoft-float")
1296  .flag("-mnan=2008")
1297  .flag("-muclibc");
1298  auto BeSoft = makeMultilib("/mips-r2-soft")
1299  .flag("+EB")
1300  .flag("+msoft-float")
1301  .flag("-mnan=2008");
1302  auto ElHard = makeMultilib("/mipsel-r2-hard")
1303  .flag("+EL")
1304  .flag("-msoft-float")
1305  .flag("-mnan=2008")
1306  .flag("-muclibc");
1307  auto ElSoft = makeMultilib("/mipsel-r2-soft")
1308  .flag("+EL")
1309  .flag("+msoft-float")
1310  .flag("-mnan=2008")
1311  .flag("-mmicromips");
1312  auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1313  .flag("+EB")
1314  .flag("-msoft-float")
1315  .flag("+mnan=2008")
1316  .flag("-muclibc");
1317  auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1318  .flag("+EL")
1319  .flag("-msoft-float")
1320  .flag("+mnan=2008")
1321  .flag("-muclibc")
1322  .flag("-mmicromips");
1323  auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1324  .flag("+EB")
1325  .flag("-msoft-float")
1326  .flag("+mnan=2008")
1327  .flag("+muclibc");
1328  auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1329  .flag("+EL")
1330  .flag("-msoft-float")
1331  .flag("+mnan=2008")
1332  .flag("+muclibc");
1333  auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1334  .flag("+EB")
1335  .flag("-msoft-float")
1336  .flag("-mnan=2008")
1337  .flag("+muclibc");
1338  auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1339  .flag("+EL")
1340  .flag("-msoft-float")
1341  .flag("-mnan=2008")
1342  .flag("+muclibc");
1343  auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1344  .flag("+EL")
1345  .flag("-msoft-float")
1346  .flag("+mnan=2008")
1347  .flag("+mmicromips");
1348  auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1349  .flag("+EL")
1350  .flag("+msoft-float")
1351  .flag("-mnan=2008")
1352  .flag("+mmicromips");
1353 
1354  auto O32 =
1355  makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1356  auto N32 =
1357  makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1358  auto N64 =
1359  makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1360 
1361  MtiMipsMultilibsV2 =
1362  MultilibSet()
1363  .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1364  BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1365  ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1366  .Either(O32, N32, N64)
1367  .FilterOut(NonExistent)
1368  .setIncludeDirsCallback([](const Multilib &M) {
1369  return std::vector<std::string>({"/../../../../sysroot" +
1370  M.includeSuffix() +
1371  "/../usr/include"});
1372  })
1373  .setFilePathsCallback([](const Multilib &M) {
1374  return std::vector<std::string>(
1375  {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1376  });
1377  }
1378  for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1379  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1380  Result.Multilibs = *Candidate;
1381  return true;
1382  }
1383  }
1384  return false;
1385 }
1386 
1387 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags,
1388  FilterNonExistent &NonExistent,
1389  DetectedMultilibs &Result) {
1390  // CodeScape IMG toolchain v1.2 and early.
1391  MultilibSet ImgMultilibsV1;
1392  {
1393  auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1394 
1395  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1396 
1397  auto MAbi64 =
1398  makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1399 
1400  ImgMultilibsV1 =
1401  MultilibSet()
1402  .Maybe(Mips64r6)
1403  .Maybe(MAbi64)
1404  .Maybe(LittleEndian)
1405  .FilterOut(NonExistent)
1406  .setIncludeDirsCallback([](const Multilib &M) {
1407  return std::vector<std::string>(
1408  {"/include", "/../../../../sysroot/usr/include"});
1409  });
1410  }
1411 
1412  // CodeScape IMG toolchain starting from v1.3.
1413  MultilibSet ImgMultilibsV2;
1414  {
1415  auto BeHard = makeMultilib("/mips-r6-hard")
1416  .flag("+EB")
1417  .flag("-msoft-float")
1418  .flag("-mmicromips");
1419  auto BeSoft = makeMultilib("/mips-r6-soft")
1420  .flag("+EB")
1421  .flag("+msoft-float")
1422  .flag("-mmicromips");
1423  auto ElHard = makeMultilib("/mipsel-r6-hard")
1424  .flag("+EL")
1425  .flag("-msoft-float")
1426  .flag("-mmicromips");
1427  auto ElSoft = makeMultilib("/mipsel-r6-soft")
1428  .flag("+EL")
1429  .flag("+msoft-float")
1430  .flag("-mmicromips");
1431  auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1432  .flag("+EB")
1433  .flag("-msoft-float")
1434  .flag("+mmicromips");
1435  auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1436  .flag("+EB")
1437  .flag("+msoft-float")
1438  .flag("+mmicromips");
1439  auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1440  .flag("+EL")
1441  .flag("-msoft-float")
1442  .flag("+mmicromips");
1443  auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1444  .flag("+EL")
1445  .flag("+msoft-float")
1446  .flag("+mmicromips");
1447 
1448  auto O32 =
1449  makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1450  auto N32 =
1451  makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1452  auto N64 =
1453  makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1454 
1455  ImgMultilibsV2 =
1456  MultilibSet()
1457  .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1458  ElMicroHard, ElMicroSoft})
1459  .Either(O32, N32, N64)
1460  .FilterOut(NonExistent)
1461  .setIncludeDirsCallback([](const Multilib &M) {
1462  return std::vector<std::string>({"/../../../../sysroot" +
1463  M.includeSuffix() +
1464  "/../usr/include"});
1465  })
1466  .setFilePathsCallback([](const Multilib &M) {
1467  return std::vector<std::string>(
1468  {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1469  });
1470  }
1471  for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1472  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1473  Result.Multilibs = *Candidate;
1474  return true;
1475  }
1476  }
1477  return false;
1478 }
1479 
1480 bool clang::driver::findMIPSMultilibs(const Driver &D,
1481  const llvm::Triple &TargetTriple,
1482  StringRef Path, const ArgList &Args,
1483  DetectedMultilibs &Result) {
1484  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1485 
1486  StringRef CPUName;
1487  StringRef ABIName;
1488  tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1489 
1490  llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1491 
1492  Multilib::flags_list Flags;
1493  addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags);
1494  addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags);
1495  addMultilibFlag(isMips16(Args), "mips16", Flags);
1496  addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1497  addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1498  CPUName == "mips32r5" || CPUName == "p5600",
1499  "march=mips32r2", Flags);
1500  addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1501  addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1502  addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1503  CPUName == "mips64r5" || CPUName == "octeon" ||
1504  CPUName == "octeon+",
1505  "march=mips64r2", Flags);
1506  addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1507  addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1508  addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1509  addMultilibFlag(tools::mips::isNaN2008(D, Args, TargetTriple), "mnan=2008",
1510  Flags);
1511  addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1512  addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1513  addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1514  addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1515  addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1516  addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1517 
1518  if (TargetTriple.isAndroid())
1519  return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1520  Result);
1521 
1522  if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1523  TargetTriple.getOS() == llvm::Triple::Linux &&
1524  TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1525  return findMipsMuslMultilibs(Flags, NonExistent, Result);
1526 
1527  if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1528  TargetTriple.getOS() == llvm::Triple::Linux &&
1529  TargetTriple.isGNUEnvironment())
1530  return findMipsMtiMultilibs(Flags, NonExistent, Result);
1531 
1532  if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1533  TargetTriple.getOS() == llvm::Triple::Linux &&
1534  TargetTriple.isGNUEnvironment())
1535  return findMipsImgMultilibs(Flags, NonExistent, Result);
1536 
1537  if (findMipsCsMultilibs(Flags, NonExistent, Result))
1538  return true;
1539 
1540  // Fallback to the regular toolchain-tree structure.
1541  Multilib Default;
1542  Result.Multilibs.push_back(Default);
1543  Result.Multilibs.FilterOut(NonExistent);
1544 
1545  if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1546  Result.BiarchSibling = Multilib();
1547  return true;
1548  }
1549 
1550  return false;
1551 }
1552 
1553 static void findAndroidArmMultilibs(const Driver &D,
1554  const llvm::Triple &TargetTriple,
1555  StringRef Path, const ArgList &Args,
1556  DetectedMultilibs &Result) {
1557  // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1558  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1559  Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1560  .flag("+march=armv7-a")
1561  .flag("-mthumb");
1562  Multilib ThumbMultilib = makeMultilib("/thumb")
1563  .flag("-march=armv7-a")
1564  .flag("+mthumb");
1565  Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1566  .flag("+march=armv7-a")
1567  .flag("+mthumb");
1568  Multilib DefaultMultilib = makeMultilib("")
1569  .flag("-march=armv7-a")
1570  .flag("-mthumb");
1571  MultilibSet AndroidArmMultilibs =
1572  MultilibSet()
1573  .Either(ThumbMultilib, ArmV7Multilib,
1574  ArmV7ThumbMultilib, DefaultMultilib)
1575  .FilterOut(NonExistent);
1576 
1577  Multilib::flags_list Flags;
1578  llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1579  bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1580  bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1581  bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1582  bool IsThumbMode = IsThumbArch ||
1583  Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1584  (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1585  bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1586  (llvm::ARM::parseArchVersion(Arch) == 7 ||
1587  (IsArmArch && Arch == "" && IsV7SubArch));
1588  addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags);
1589  addMultilibFlag(IsThumbMode, "mthumb", Flags);
1590 
1591  if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1592  Result.Multilibs = AndroidArmMultilibs;
1593 }
1594 
1595 static bool findMSP430Multilibs(const Driver &D,
1596  const llvm::Triple &TargetTriple,
1597  StringRef Path, const ArgList &Args,
1598  DetectedMultilibs &Result) {
1599  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1600  Multilib WithoutExceptions = makeMultilib("/430").flag("-exceptions");
1601  Multilib WithExceptions = makeMultilib("/430/exceptions").flag("+exceptions");
1602 
1603  // FIXME: when clang starts to support msp430x ISA additional logic
1604  // to select between multilib must be implemented
1605  // Multilib MSP430xMultilib = makeMultilib("/large");
1606 
1607  Result.Multilibs.push_back(WithoutExceptions);
1608  Result.Multilibs.push_back(WithExceptions);
1609  Result.Multilibs.FilterOut(NonExistent);
1610 
1611  Multilib::flags_list Flags;
1612  addMultilibFlag(Args.hasFlag(options::OPT_fexceptions,
1613  options::OPT_fno_exceptions, false),
1614  "exceptions", Flags);
1615  if (Result.Multilibs.select(Flags, Result.SelectedMultilib))
1616  return true;
1617 
1618  return false;
1619 }
1620 
1621 static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple,
1622  StringRef Path, const ArgList &Args,
1623  DetectedMultilibs &Result) {
1624  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1625 
1626  tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args);
1627  std::optional<llvm::StringRef> Res =
1628  tools::csky::getCSKYArchName(D, Args, TargetTriple);
1629 
1630  if (!Res)
1631  return;
1632  auto ARCHName = *Res;
1633 
1634  Multilib::flags_list Flags;
1635  addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Hard, "hard-fp", Flags);
1636  addMultilibFlag(TheFloatABI == tools::csky::FloatABI::SoftFP, "soft-fp",
1637  Flags);
1638  addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Soft, "soft", Flags);
1639  addMultilibFlag(ARCHName == "ck801", "march=ck801", Flags);
1640  addMultilibFlag(ARCHName == "ck802", "march=ck802", Flags);
1641  addMultilibFlag(ARCHName == "ck803", "march=ck803", Flags);
1642  addMultilibFlag(ARCHName == "ck804", "march=ck804", Flags);
1643  addMultilibFlag(ARCHName == "ck805", "march=ck805", Flags);
1644  addMultilibFlag(ARCHName == "ck807", "march=ck807", Flags);
1645  addMultilibFlag(ARCHName == "ck810", "march=ck810", Flags);
1646  addMultilibFlag(ARCHName == "ck810v", "march=ck810v", Flags);
1647  addMultilibFlag(ARCHName == "ck860", "march=ck860", Flags);
1648  addMultilibFlag(ARCHName == "ck860v", "march=ck860v", Flags);
1649 
1650  bool isBigEndian = false;
1651  if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
1652  options::OPT_mbig_endian))
1653  isBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
1654  addMultilibFlag(isBigEndian, "EB", Flags);
1655 
1656  auto HardFloat = makeMultilib("/hard-fp").flag("+hard-fp");
1657  auto SoftFpFloat = makeMultilib("/soft-fp").flag("+soft-fp");
1658  auto SoftFloat = makeMultilib("").flag("+soft");
1659  auto Arch801 = makeMultilib("/ck801").flag("+march=ck801");
1660  auto Arch802 = makeMultilib("/ck802").flag("+march=ck802");
1661  auto Arch803 = makeMultilib("/ck803").flag("+march=ck803");
1662  // CK804 use the same library as CK803
1663  auto Arch804 = makeMultilib("/ck803").flag("+march=ck804");
1664  auto Arch805 = makeMultilib("/ck805").flag("+march=ck805");
1665  auto Arch807 = makeMultilib("/ck807").flag("+march=ck807");
1666  auto Arch810 = makeMultilib("").flag("+march=ck810");
1667  auto Arch810v = makeMultilib("/ck810v").flag("+march=ck810v");
1668  auto Arch860 = makeMultilib("/ck860").flag("+march=ck860");
1669  auto Arch860v = makeMultilib("/ck860v").flag("+march=ck860v");
1670  auto BigEndian = makeMultilib("/big").flag("+EB");
1671 
1672  MultilibSet CSKYMultilibs =
1673  MultilibSet()
1674  .Maybe(BigEndian)
1675  .Either({Arch801, Arch802, Arch803, Arch804, Arch805, Arch807,
1676  Arch810, Arch810v, Arch860, Arch860v})
1677  .Either(HardFloat, SoftFpFloat, SoftFloat)
1678  .FilterOut(NonExistent);
1679 
1680  if (CSKYMultilibs.select(Flags, Result.SelectedMultilib))
1681  Result.Multilibs = CSKYMultilibs;
1682 }
1683 
1684 static void findRISCVBareMetalMultilibs(const Driver &D,
1685  const llvm::Triple &TargetTriple,
1686  StringRef Path, const ArgList &Args,
1687  DetectedMultilibs &Result) {
1688  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1689  struct RiscvMultilib {
1690  StringRef march;
1691  StringRef mabi;
1692  };
1693  // currently only support the set of multilibs like riscv-gnu-toolchain does.
1694  // TODO: support MULTILIB_REUSE
1695  constexpr RiscvMultilib RISCVMultilibSet[] = {
1696  {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"},
1697  {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"},
1698  {"rv64imafdc", "lp64d"}};
1699 
1700  std::vector<Multilib> Ms;
1701  for (auto Element : RISCVMultilibSet) {
1702  // multilib path rule is ${march}/${mabi}
1703  Ms.emplace_back(
1704  makeMultilib((Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1705  .flag(Twine("+march=", Element.march).str())
1706  .flag(Twine("+mabi=", Element.mabi).str()));
1707  }
1708  MultilibSet RISCVMultilibs =
1709  MultilibSet()
1710  .Either(ArrayRef<Multilib>(Ms))
1711  .FilterOut(NonExistent)
1712  .setFilePathsCallback([](const Multilib &M) {
1713  return std::vector<std::string>(
1714  {M.gccSuffix(),
1715  "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(),
1716  "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()});
1717  });
1718 
1719 
1720  Multilib::flags_list Flags;
1721  llvm::StringSet<> Added_ABIs;
1722  StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1723  StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple);
1724  for (auto Element : RISCVMultilibSet) {
1725  addMultilibFlag(MArch == Element.march,
1726  Twine("march=", Element.march).str().c_str(), Flags);
1727  if (!Added_ABIs.count(Element.mabi)) {
1728  Added_ABIs.insert(Element.mabi);
1729  addMultilibFlag(ABIName == Element.mabi,
1730  Twine("mabi=", Element.mabi).str().c_str(), Flags);
1731  }
1732  }
1733 
1734  if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1735  Result.Multilibs = RISCVMultilibs;
1736 }
1737 
1738 static void findRISCVMultilibs(const Driver &D,
1739  const llvm::Triple &TargetTriple, StringRef Path,
1740  const ArgList &Args, DetectedMultilibs &Result) {
1741  if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1742  return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1743 
1744  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1745  Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32");
1746  Multilib Ilp32f =
1747  makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f");
1748  Multilib Ilp32d =
1749  makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d");
1750  Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64");
1751  Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f");
1752  Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d");
1753  MultilibSet RISCVMultilibs =
1754  MultilibSet()
1755  .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1756  .FilterOut(NonExistent);
1757 
1758  Multilib::flags_list Flags;
1759  bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1760  StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1761 
1762  addMultilibFlag(!IsRV64, "m32", Flags);
1763  addMultilibFlag(IsRV64, "m64", Flags);
1764  addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags);
1765  addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags);
1766  addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags);
1767  addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags);
1768  addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags);
1769  addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags);
1770 
1771  if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1772  Result.Multilibs = RISCVMultilibs;
1773 }
1774 
1775 static bool findBiarchMultilibs(const Driver &D,
1776  const llvm::Triple &TargetTriple,
1777  StringRef Path, const ArgList &Args,
1778  bool NeedsBiarchSuffix,
1779  DetectedMultilibs &Result) {
1780  Multilib Default;
1781 
1782  // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1783  // in what would normally be GCCInstallPath and put the 64-bit
1784  // libs in a subdirectory named 64. The simple logic we follow is that
1785  // *if* there is a subdirectory of the right name with crtbegin.o in it,
1786  // we use that. If not, and if not a biarch triple alias, we look for
1787  // crtbegin.o without the subdirectory.
1788 
1789  StringRef Suff64 = "/64";
1790  // Solaris uses platform-specific suffixes instead of /64.
1791  if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1792  switch (TargetTriple.getArch()) {
1793  case llvm::Triple::x86:
1794  case llvm::Triple::x86_64:
1795  Suff64 = "/amd64";
1796  break;
1797  case llvm::Triple::sparc:
1798  case llvm::Triple::sparcv9:
1799  Suff64 = "/sparcv9";
1800  break;
1801  default:
1802  break;
1803  }
1804  }
1805 
1806  Multilib Alt64 = Multilib()
1807  .gccSuffix(Suff64)
1808  .includeSuffix(Suff64)
1809  .flag("-m32")
1810  .flag("+m64")
1811  .flag("-mx32");
1812  Multilib Alt32 = Multilib()
1813  .gccSuffix("/32")
1814  .includeSuffix("/32")
1815  .flag("+m32")
1816  .flag("-m64")
1817  .flag("-mx32");
1818  Multilib Altx32 = Multilib()
1819  .gccSuffix("/x32")
1820  .includeSuffix("/x32")
1821  .flag("-m32")
1822  .flag("-m64")
1823  .flag("+mx32");
1824 
1825  // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1826  FilterNonExistent NonExistent(
1827  Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1828 
1829  // Determine default multilib from: 32, 64, x32
1830  // Also handle cases such as 64 on 32, 32 on 64, etc.
1831  enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1832  const bool IsX32 = TargetTriple.isX32();
1833  if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1834  Want = WANT64;
1835  else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1836  Want = WANT64;
1837  else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1838  Want = WANT32;
1839  else {
1840  if (TargetTriple.isArch32Bit())
1841  Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1842  else if (IsX32)
1843  Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1844  else
1845  Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1846  }
1847 
1848  if (Want == WANT32)
1849  Default.flag("+m32").flag("-m64").flag("-mx32");
1850  else if (Want == WANT64)
1851  Default.flag("-m32").flag("+m64").flag("-mx32");
1852  else if (Want == WANTX32)
1853  Default.flag("-m32").flag("-m64").flag("+mx32");
1854  else
1855  return false;
1856 
1857  Result.Multilibs.push_back(Default);
1858  Result.Multilibs.push_back(Alt64);
1859  Result.Multilibs.push_back(Alt32);
1860  Result.Multilibs.push_back(Altx32);
1861 
1862  Result.Multilibs.FilterOut(NonExistent);
1863 
1864  Multilib::flags_list Flags;
1865  addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1866  addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1867  addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1868 
1869  if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1870  return false;
1871 
1872  if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1873  Result.SelectedMultilib == Altx32)
1874  Result.BiarchSibling = Default;
1875 
1876  return true;
1877 }
1878 
1879 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1880 /// all subcommands; this relies on gcc translating the majority of
1881 /// command line options.
1882 
1883 /// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1884 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1885  int RHSPatch,
1886  StringRef RHSPatchSuffix) const {
1887  if (Major != RHSMajor)
1888  return Major < RHSMajor;
1889  if (Minor != RHSMinor) {
1890  // Note that versions without a specified minor sort higher than those with
1891  // a minor.
1892  if (RHSMinor == -1)
1893  return true;
1894  if (Minor == -1)
1895  return false;
1896  return Minor < RHSMinor;
1897  }
1898  if (Patch != RHSPatch) {
1899  // Note that versions without a specified patch sort higher than those with
1900  // a patch.
1901  if (RHSPatch == -1)
1902  return true;
1903  if (Patch == -1)
1904  return false;
1905 
1906  // Otherwise just sort on the patch itself.
1907  return Patch < RHSPatch;
1908  }
1909  if (PatchSuffix != RHSPatchSuffix) {
1910  // Sort empty suffixes higher.
1911  if (RHSPatchSuffix.empty())
1912  return true;
1913  if (PatchSuffix.empty())
1914  return false;
1915 
1916  // Provide a lexicographic sort to make this a total ordering.
1917  return PatchSuffix < RHSPatchSuffix;
1918  }
1919 
1920  // The versions are equal.
1921  return false;
1922 }
1923 
1924 /// Parse a GCCVersion object out of a string of text.
1925 ///
1926 /// This is the primary means of forming GCCVersion objects.
1927 /*static*/
1928 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1929  const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1930  std::pair<StringRef, StringRef> First = VersionText.split('.');
1931  std::pair<StringRef, StringRef> Second = First.second.split('.');
1932 
1933  GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1934  if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
1935  return BadVersion;
1936  GoodVersion.MajorStr = First.first.str();
1937  if (First.second.empty())
1938  return GoodVersion;
1939  StringRef MinorStr = Second.first;
1940  if (Second.second.empty()) {
1941  if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) {
1942  GoodVersion.PatchSuffix = std::string(MinorStr.substr(EndNumber));
1943  MinorStr = MinorStr.slice(0, EndNumber);
1944  }
1945  }
1946  if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
1947  return BadVersion;
1948  GoodVersion.MinorStr = MinorStr.str();
1949 
1950  // First look for a number prefix and parse that if present. Otherwise just
1951  // stash the entire patch string in the suffix, and leave the number
1952  // unspecified. This covers versions strings such as:
1953  // 5 (handled above)
1954  // 4.4
1955  // 4.4-patched
1956  // 4.4.0
1957  // 4.4.x
1958  // 4.4.2-rc4
1959  // 4.4.x-patched
1960  // And retains any patch number it finds.
1961  StringRef PatchText = Second.second;
1962  if (!PatchText.empty()) {
1963  if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
1964  // Try to parse the number and any suffix.
1965  if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
1966  GoodVersion.Patch < 0)
1967  return BadVersion;
1968  GoodVersion.PatchSuffix = std::string(PatchText.substr(EndNumber));
1969  }
1970  }
1971 
1972  return GoodVersion;
1973 }
1974 
1975 static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
1976  llvm::StringRef SysRoot) {
1977  const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1978  if (A)
1979  return A->getValue();
1980 
1981  // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
1982  // GCC_INSTALL_PREFIX specifies the gcc installation for the default
1983  // sysroot and is likely not valid with a different sysroot.
1984  if (!SysRoot.empty())
1985  return "";
1986 
1987  return GCC_INSTALL_PREFIX;
1988 }
1989 
1990 /// Initialize a GCCInstallationDetector from the driver.
1991 ///
1992 /// This performs all of the autodetection and sets up the various paths.
1993 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1994 ///
1995 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1996 /// should instead pull the target out of the driver. This is currently
1997 /// necessary because the driver doesn't store the final version of the target
1998 /// triple.
1999 void Generic_GCC::GCCInstallationDetector::init(
2000  const llvm::Triple &TargetTriple, const ArgList &Args,
2001  ArrayRef<std::string> ExtraTripleAliases) {
2002  llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
2003  ? TargetTriple.get64BitArchVariant()
2004  : TargetTriple.get32BitArchVariant();
2005  // The library directories which may contain GCC installations.
2006  SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
2007  // The compatible GCC triples for this particular architecture.
2008  SmallVector<StringRef, 16> CandidateTripleAliases;
2009  SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
2010  CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
2011  CandidateTripleAliases, CandidateBiarchLibDirs,
2012  CandidateBiarchTripleAliases);
2013 
2014  // If --gcc-install-dir= is specified, skip filesystem detection.
2015  if (const Arg *A =
2016  Args.getLastArg(clang::driver::options::OPT_gcc_install_dir_EQ);
2017  A && A->getValue()[0]) {
2018  StringRef InstallDir = A->getValue();
2019  if (!ScanGCCForMultilibs(TargetTriple, Args, InstallDir, false)) {
2020  D.Diag(diag::err_drv_invalid_gcc_install_dir) << InstallDir;
2021  } else {
2022  (void)InstallDir.consume_back("/");
2023  StringRef VersionText = llvm::sys::path::filename(InstallDir);
2024  StringRef TripleText =
2025  llvm::sys::path::filename(llvm::sys::path::parent_path(InstallDir));
2026 
2027  Version = GCCVersion::Parse(VersionText);
2028  GCCTriple.setTriple(TripleText);
2029  GCCInstallPath = std::string(InstallDir);
2030  GCCParentLibPath = GCCInstallPath + "/../../..";
2031  IsValid = true;
2032  }
2033  return;
2034  }
2035 
2036  // Compute the set of prefixes for our search.
2037  SmallVector<std::string, 8> Prefixes;
2038  StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot);
2039  if (GCCToolchainDir != "") {
2040  if (GCCToolchainDir.back() == '/')
2041  GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
2042 
2043  Prefixes.push_back(std::string(GCCToolchainDir));
2044  } else {
2045  // If we have a SysRoot, try that first.
2046  if (!D.SysRoot.empty()) {
2047  Prefixes.push_back(D.SysRoot);
2048  AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
2049  }
2050 
2051  // Then look for gcc installed alongside clang.
2052  Prefixes.push_back(D.InstalledDir + "/..");
2053 
2054  // Next, look for prefix(es) that correspond to distribution-supplied gcc
2055  // installations.
2056  if (D.SysRoot.empty()) {
2057  // Typically /usr.
2058  AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
2059  }
2060 
2061  // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided.
2062  // This avoids accidentally enforcing the system GCC version when using a
2063  // custom toolchain.
2064  SmallVector<StringRef, 16> GentooTestTriples;
2065  // Try to match an exact triple as target triple first.
2066  // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
2067  // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
2068  // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
2069  // triple x86_64-gentoo-linux-gnu is present.
2070  GentooTestTriples.push_back(TargetTriple.str());
2071  // Check rest of triples.
2072  GentooTestTriples.append(ExtraTripleAliases.begin(),
2073  ExtraTripleAliases.end());
2074  GentooTestTriples.append(CandidateTripleAliases.begin(),
2075  CandidateTripleAliases.end());
2076  if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples,
2077  CandidateBiarchTripleAliases))
2078  return;
2079  }
2080 
2081  // Loop over the various components which exist and select the best GCC
2082  // installation available. GCC installs are ranked by version number.
2083  const GCCVersion VersionZero = GCCVersion::Parse("0.0.0");
2084  Version = VersionZero;
2085  for (const std::string &Prefix : Prefixes) {
2086  auto &VFS = D.getVFS();
2087  if (!VFS.exists(Prefix))
2088  continue;
2089  for (StringRef Suffix : CandidateLibDirs) {
2090  const std::string LibDir = concat(Prefix, Suffix);
2091  if (!VFS.exists(LibDir))
2092  continue;
2093  // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross.
2094  bool GCCDirExists = VFS.exists(LibDir + "/gcc");
2095  bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross");
2096  // Try to match the exact target triple first.
2097  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str(),
2098  false, GCCDirExists, GCCCrossDirExists);
2099  // Try rest of possible triples.
2100  for (StringRef Candidate : ExtraTripleAliases) // Try these first.
2101  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false,
2102  GCCDirExists, GCCCrossDirExists);
2103  for (StringRef Candidate : CandidateTripleAliases)
2104  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false,
2105  GCCDirExists, GCCCrossDirExists);
2106  }
2107  for (StringRef Suffix : CandidateBiarchLibDirs) {
2108  const std::string LibDir = Prefix + Suffix.str();
2109  if (!VFS.exists(LibDir))
2110  continue;
2111  bool GCCDirExists = VFS.exists(LibDir + "/gcc");
2112  bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross");
2113  for (StringRef Candidate : CandidateBiarchTripleAliases)
2114  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true,
2115  GCCDirExists, GCCCrossDirExists);
2116  }
2117 
2118  // Skip other prefixes once a GCC installation is found.
2119  if (Version > VersionZero)
2120  break;
2121  }
2122 }
2123 
2124 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
2125  for (const auto &InstallPath : CandidateGCCInstallPaths)
2126  OS << "Found candidate GCC installation: " << InstallPath << "\n";
2127 
2128  if (!GCCInstallPath.empty())
2129  OS << "Selected GCC installation: " << GCCInstallPath << "\n";
2130 
2131  for (const auto &Multilib : Multilibs)
2132  OS << "Candidate multilib: " << Multilib << "\n";
2133 
2134  if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
2135  OS << "Selected multilib: " << SelectedMultilib << "\n";
2136 }
2137 
2138 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
2139  if (BiarchSibling) {
2140  M = *BiarchSibling;
2141  return true;
2142  }
2143  return false;
2144 }
2145 
2146 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
2147  const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
2148  StringRef SysRoot) {
2149  if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2150  // Solaris is a special case.
2151  // The GCC installation is under
2152  // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2153  // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2154  // /usr/gcc/<version> as a prefix.
2155 
2156  std::string PrefixDir = concat(SysRoot, "/usr/gcc");
2157  std::error_code EC;
2158  for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC),
2159  LE;
2160  !EC && LI != LE; LI = LI.increment(EC)) {
2161  StringRef VersionText = llvm::sys::path::filename(LI->path());
2162  GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2163 
2164  // Filter out obviously bad entries.
2165  if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1))
2166  continue;
2167 
2168  std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2169  std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2170  if (!D.getVFS().exists(CandidateLibPath))
2171  continue;
2172 
2173  Prefixes.push_back(CandidatePrefix);
2174  }
2175  return;
2176  }
2177 
2178  // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets
2179  // and gcc-toolsets.
2180  if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
2181  D.getVFS().exists("/opt/rh")) {
2182  // TODO: We may want to remove this, since the functionality
2183  // can be achieved using config files.
2184  Prefixes.push_back("/opt/rh/gcc-toolset-12/root/usr");
2185  Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr");
2186  Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr");
2187  Prefixes.push_back("/opt/rh/devtoolset-12/root/usr");
2188  Prefixes.push_back("/opt/rh/devtoolset-11/root/usr");
2189  Prefixes.push_back("/opt/rh/devtoolset-10/root/usr");
2190  Prefixes.push_back("/opt/rh/devtoolset-9/root/usr");
2191  Prefixes.push_back("/opt/rh/devtoolset-8/root/usr");
2192  Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
2193  Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
2194  Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
2195  Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
2196  Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
2197  }
2198 
2199  // Fall back to /usr which is used by most non-Solaris systems.
2200  Prefixes.push_back(concat(SysRoot, "/usr"));
2201 }
2202 
2203 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2204  const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2205  SmallVectorImpl<StringRef> &LibDirs,
2206  SmallVectorImpl<StringRef> &TripleAliases,
2207  SmallVectorImpl<StringRef> &BiarchLibDirs,
2208  SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2209  // Declare a bunch of static data sets that we'll select between below. These
2210  // are specifically designed to always refer to string literals to avoid any
2211  // lifetime or initialization issues.
2212  //
2213  // The *Triples variables hard code some triples so that, for example,
2214  // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu.
2215  // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE
2216  // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The
2217  // lists should shrink over time. Please don't add more elements to *Triples.
2218  static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2219  static const char *const AArch64Triples[] = {
2220  "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux",
2221  "aarch64-suse-linux"};
2222  static const char *const AArch64beLibDirs[] = {"/lib"};
2223  static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
2224  "aarch64_be-linux-gnu"};
2225 
2226  static const char *const ARMLibDirs[] = {"/lib"};
2227  static const char *const ARMTriples[] = {"arm-linux-gnueabi"};
2228  static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2229  "armv7hl-redhat-linux-gnueabi",
2230  "armv6hl-suse-linux-gnueabi",
2231  "armv7hl-suse-linux-gnueabi"};
2232  static const char *const ARMebLibDirs[] = {"/lib"};
2233  static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"};
2234  static const char *const ARMebHFTriples[] = {
2235  "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2236 
2237  static const char *const AVRLibDirs[] = {"/lib"};
2238  static const char *const AVRTriples[] = {"avr"};
2239 
2240  static const char *const CSKYLibDirs[] = {"/lib"};
2241  static const char *const CSKYTriples[] = {
2242  "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"};
2243 
2244  static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2245  static const char *const X86_64Triples[] = {
2246  "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2247  "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2248  "x86_64-redhat-linux", "x86_64-suse-linux",
2249  "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
2250  "x86_64-slackware-linux", "x86_64-unknown-linux",
2251  "x86_64-amazon-linux"};
2252  static const char *const X32Triples[] = {"x86_64-linux-gnux32",
2253  "x86_64-pc-linux-gnux32"};
2254  static const char *const X32LibDirs[] = {"/libx32", "/lib"};
2255  static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2256  static const char *const X86Triples[] = {
2257  "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu",
2258  "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux",
2259  "i586-suse-linux", "i686-montavista-linux", "i686-gnu",
2260  };
2261 
2262  static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"};
2263  static const char *const LoongArch64Triples[] = {
2264  "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"};
2265 
2266  static const char *const M68kLibDirs[] = {"/lib"};
2267  static const char *const M68kTriples[] = {
2268  "m68k-linux-gnu", "m68k-unknown-linux-gnu", "m68k-suse-linux"};
2269 
2270  static const char *const MIPSLibDirs[] = {"/libo32", "/lib"};
2271  static const char *const MIPSTriples[] = {
2272  "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2273  "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2274  static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"};
2275  static const char *const MIPSELTriples[] = {
2276  "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu"};
2277 
2278  static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2279  static const char *const MIPS64Triples[] = {
2280  "mips64-linux-gnu", "mips-mti-linux-gnu",
2281  "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2282  "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2283  static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2284  static const char *const MIPS64ELTriples[] = {
2285  "mips64el-linux-gnu", "mips-mti-linux-gnu",
2286  "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2287  "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"};
2288 
2289  static const char *const MIPSN32LibDirs[] = {"/lib32"};
2290  static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2291  "mipsisa64r6-linux-gnuabin32"};
2292  static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2293  static const char *const MIPSN32ELTriples[] = {
2294  "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2295 
2296  static const char *const MSP430LibDirs[] = {"/lib"};
2297  static const char *const MSP430Triples[] = {"msp430-elf"};
2298 
2299  static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2300  static const char *const PPCTriples[] = {
2301  "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
2302  // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2303  // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2304  "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2305  static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
2306  static const char *const PPCLETriples[] = {"powerpcle-linux-gnu",
2307  "powerpcle-unknown-linux-gnu",
2308  "powerpcle-linux-musl"};
2309 
2310  static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2311  static const char *const PPC64Triples[] = {
2312  "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
2313  "powerpc64-suse-linux", "ppc64-redhat-linux"};
2314  static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2315  static const char *const PPC64LETriples[] = {
2316  "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
2317  "powerpc64le-none-linux-gnu", "powerpc64le-suse-linux",
2318  "ppc64le-redhat-linux"};
2319 
2320  static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2321  static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2322  "riscv32-linux-gnu",
2323  "riscv32-unknown-elf"};
2324  static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2325  static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2326  "riscv64-linux-gnu",
2327  "riscv64-unknown-elf"};
2328 
2329  static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2330  static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2331  "sparcv8-linux-gnu"};
2332  static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2333  static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2334  "sparcv9-linux-gnu"};
2335 
2336  static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2337  static const char *const SystemZTriples[] = {
2338  "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
2339  "s390x-suse-linux", "s390x-redhat-linux"};
2340 
2341 
2342  using std::begin;
2343  using std::end;
2344 
2345  if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2346  static const char *const SolarisLibDirs[] = {"/lib"};
2347  static const char *const SolarisSparcV8Triples[] = {
2348  "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"};
2349  static const char *const SolarisSparcV9Triples[] = {
2350  "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"};
2351  static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11",
2352  "i386-pc-solaris2.12"};
2353  static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11",
2354  "x86_64-pc-solaris2.12"};
2355  LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2356  BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2357  switch (TargetTriple.getArch()) {
2358  case llvm::Triple::x86:
2359  TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples));
2360  BiarchTripleAliases.append(begin(SolarisX86_64Triples),
2361  end(SolarisX86_64Triples));
2362  break;
2363  case llvm::Triple::x86_64:
2364  TripleAliases.append(begin(SolarisX86_64Triples),
2365  end(SolarisX86_64Triples));
2366  BiarchTripleAliases.append(begin(SolarisX86Triples),
2367  end(SolarisX86Triples));
2368  break;
2369  case llvm::Triple::sparc:
2370  TripleAliases.append(begin(SolarisSparcV8Triples),
2371  end(SolarisSparcV8Triples));
2372  BiarchTripleAliases.append(begin(SolarisSparcV9Triples),
2373  end(SolarisSparcV9Triples));
2374  break;
2375  case llvm::Triple::sparcv9:
2376  TripleAliases.append(begin(SolarisSparcV9Triples),
2377  end(SolarisSparcV9Triples));
2378  BiarchTripleAliases.append(begin(SolarisSparcV8Triples),
2379  end(SolarisSparcV8Triples));
2380  break;
2381  default:
2382  break;
2383  }
2384  return;
2385  }
2386 
2387  // Android targets should not use GNU/Linux tools or libraries.
2388  if (TargetTriple.isAndroid()) {
2389  static const char *const AArch64AndroidTriples[] = {
2390  "aarch64-linux-android"};
2391  static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2392  static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
2393  static const char *const MIPS64ELAndroidTriples[] = {
2394  "mips64el-linux-android"};
2395  static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2396  static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2397 
2398  switch (TargetTriple.getArch()) {
2399  case llvm::Triple::aarch64:
2400  LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2401  TripleAliases.append(begin(AArch64AndroidTriples),
2402  end(AArch64AndroidTriples));
2403  break;
2404  case llvm::Triple::arm:
2405  case llvm::Triple::thumb:
2406  LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2407  TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples));
2408  break;
2409  case llvm::Triple::mipsel:
2410  LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2411  TripleAliases.append(begin(MIPSELAndroidTriples),
2412  end(MIPSELAndroidTriples));
2413  BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2414  BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
2415  end(MIPS64ELAndroidTriples));
2416  break;
2417  case llvm::Triple::mips64el:
2418  LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2419  TripleAliases.append(begin(MIPS64ELAndroidTriples),
2420  end(MIPS64ELAndroidTriples));
2421  BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2422  BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
2423  end(MIPSELAndroidTriples));
2424  break;
2425  case llvm::Triple::x86_64:
2426  LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2427  TripleAliases.append(begin(X86_64AndroidTriples),
2428  end(X86_64AndroidTriples));
2429  BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2430  BiarchTripleAliases.append(begin(X86AndroidTriples),
2431  end(X86AndroidTriples));
2432  break;
2433  case llvm::Triple::x86:
2434  LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2435  TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples));
2436  BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2437  BiarchTripleAliases.append(begin(X86_64AndroidTriples),
2438  end(X86_64AndroidTriples));
2439  break;
2440  default:
2441  break;
2442  }
2443 
2444  return;
2445  }
2446 
2447  switch (TargetTriple.getArch()) {
2448  case llvm::Triple::aarch64:
2449  LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2450  TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2451  BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2452  BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2453  break;
2454  case llvm::Triple::aarch64_be:
2455  LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2456  TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2457  BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2458  BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2459  break;
2460  case llvm::Triple::arm:
2461  case llvm::Triple::thumb:
2462  LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2463  if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2464  TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
2465  } else {
2466  TripleAliases.append(begin(ARMTriples), end(ARMTriples));
2467  }
2468  break;
2469  case llvm::Triple::armeb:
2470  case llvm::Triple::thumbeb:
2471  LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
2472  if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2473  TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
2474  } else {
2475  TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
2476  }
2477  break;
2478  case llvm::Triple::avr:
2479  LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs));
2480  TripleAliases.append(begin(AVRTriples), end(AVRTriples));
2481  break;
2482  case llvm::Triple::csky:
2483  LibDirs.append(begin(CSKYLibDirs), end(CSKYLibDirs));
2484  TripleAliases.append(begin(CSKYTriples), end(CSKYTriples));
2485  break;
2486  case llvm::Triple::x86_64:
2487  if (TargetTriple.isX32()) {
2488  LibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2489  TripleAliases.append(begin(X32Triples), end(X32Triples));
2490  BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2491  BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2492  } else {
2493  LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2494  TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2495  BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2496  BiarchTripleAliases.append(begin(X32Triples), end(X32Triples));
2497  }
2498  BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2499  BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
2500  break;
2501  case llvm::Triple::x86:
2502  LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2503  // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2504  // itself, which will be appended below.
2505  if (!TargetTriple.isOSIAMCU()) {
2506  TripleAliases.append(begin(X86Triples), end(X86Triples));
2507  BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2508  BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2509  BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2510  BiarchTripleAliases.append(begin(X32Triples), end(X32Triples));
2511  }
2512  break;
2513  // TODO: Handle loongarch32.
2514  case llvm::Triple::loongarch64:
2515  LibDirs.append(begin(LoongArch64LibDirs), end(LoongArch64LibDirs));
2516  TripleAliases.append(begin(LoongArch64Triples), end(LoongArch64Triples));
2517  break;
2518  case llvm::Triple::m68k:
2519  LibDirs.append(begin(M68kLibDirs), end(M68kLibDirs));
2520  TripleAliases.append(begin(M68kTriples), end(M68kTriples));
2521  break;
2522  case llvm::Triple::mips:
2523  LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2524  TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2525  BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2526  BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2527  BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2528  BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2529  break;
2530  case llvm::Triple::mipsel:
2531  LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2532  TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2533  TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2534  BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2535  BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2536  BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2537  BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2538  break;
2539  case llvm::Triple::mips64:
2540  LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2541  TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2542  BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2543  BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2544  BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2545  BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2546  break;
2547  case llvm::Triple::mips64el:
2548  LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2549  TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2550  BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2551  BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2552  BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2553  BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2554  BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2555  break;
2556  case llvm::Triple::msp430:
2557  LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
2558  TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
2559  break;
2560  case llvm::Triple::ppc:
2561  LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2562  TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2563  BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2564  BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2565  break;
2566  case llvm::Triple::ppcle:
2567  LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
2568  TripleAliases.append(begin(PPCLETriples), end(PPCLETriples));
2569  BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2570  BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2571  break;
2572  case llvm::Triple::ppc64:
2573  LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2574  TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2575  BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2576  BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2577  break;
2578  case llvm::Triple::ppc64le:
2579  LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2580  TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2581  BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
2582  BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples));
2583  break;
2584  case llvm::Triple::riscv32:
2585  LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2586  TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2587  BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2588  BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2589  break;
2590  case llvm::Triple::riscv64:
2591  LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2592  TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2593  BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2594  BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2595  break;
2596  case llvm::Triple::sparc:
2597  case llvm::Triple::sparcel:
2598  LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2599  TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2600  BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2601  BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2602  break;
2603  case llvm::Triple::sparcv9:
2604  LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2605  TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2606  BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2607  BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2608  break;
2609  case llvm::Triple::systemz:
2610  LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2611  TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2612  break;
2613  default:
2614  // By default, just rely on the standard lib directories and the original
2615  // triple.
2616  break;
2617  }
2618 
2619  // Always append the drivers target triple to the end, in case it doesn't
2620  // match any of our aliases.
2621  TripleAliases.push_back(TargetTriple.str());
2622 
2623  // Also include the multiarch variant if it's different.
2624  if (TargetTriple.str() != BiarchTriple.str())
2625  BiarchTripleAliases.push_back(BiarchTriple.str());
2626 }
2627 
2628 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2629  const llvm::Triple &TargetTriple, const ArgList &Args,
2630  StringRef Path, bool NeedsBiarchSuffix) {
2631  llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2632  DetectedMultilibs Detected;
2633 
2634  // Android standalone toolchain could have multilibs for ARM and Thumb.
2635  // Debian mips multilibs behave more like the rest of the biarch ones,
2636  // so handle them there
2637  if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2638  // It should also work without multilibs in a simplified toolchain.
2639  findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2640  } else if (TargetTriple.isCSKY()) {
2641  findCSKYMultilibs(D, TargetTriple, Path, Args, Detected);
2642  } else if (TargetTriple.isMIPS()) {
2643  if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2644  return false;
2645  } else if (TargetTriple.isRISCV()) {
2646  findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
2647  } else if (isMSP430(TargetArch)) {
2648  findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
2649  } else if (TargetArch == llvm::Triple::avr) {
2650  // AVR has no multilibs.
2651  } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2652  NeedsBiarchSuffix, Detected)) {
2653  return false;
2654  }
2655 
2656  Multilibs = Detected.Multilibs;
2657  SelectedMultilib = Detected.SelectedMultilib;
2658  BiarchSibling = Detected.BiarchSibling;
2659 
2660  return true;
2661 }
2662 
2663 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2664  const llvm::Triple &TargetTriple, const ArgList &Args,
2665  const std::string &LibDir, StringRef CandidateTriple,
2666  bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) {
2667  // Locations relative to the system lib directory where GCC's triple-specific
2668  // directories might reside.
2669  struct GCCLibSuffix {
2670  // Path from system lib directory to GCC triple-specific directory.
2671  std::string LibSuffix;
2672  // Path from GCC triple-specific directory back to system lib directory.
2673  // This is one '..' component per component in LibSuffix.
2674  StringRef ReversePath;
2675  // Whether this library suffix is relevant for the triple.
2676  bool Active;
2677  } Suffixes[] = {
2678  // This is the normal place.
2679  {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists},
2680 
2681  // Debian puts cross-compilers in gcc-cross.
2682  {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists},
2683 
2684  // The Freescale PPC SDK has the gcc libraries in
2685  // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2686  // this on Freescale triples, though, since some systems put a *lot* of
2687  // files in that location, not just GCC installation data.
2688  {CandidateTriple.str(), "..",
2689  TargetTriple.getVendor() == llvm::Triple::Freescale ||
2690  TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}};
2691 
2692  for (auto &Suffix : Suffixes) {
2693  if (!Suffix.Active)
2694  continue;
2695 
2696  StringRef LibSuffix = Suffix.LibSuffix;
2697  std::error_code EC;
2698  for (llvm::vfs::directory_iterator
2699  LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2700  LE;
2701  !EC && LI != LE; LI = LI.increment(EC)) {
2702  StringRef VersionText = llvm::sys::path::filename(LI->path());
2703  GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2704  if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2705  if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second)
2706  continue; // Saw this path before; no need to look at it again.
2707  if (CandidateVersion.isOlderThan(4, 1, 1))
2708  continue;
2709  if (CandidateVersion <= Version)
2710  continue;
2711 
2712  if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(),
2713  NeedsBiarchSuffix))
2714  continue;
2715 
2716  Version = CandidateVersion;
2717  GCCTriple.setTriple(CandidateTriple);
2718  // FIXME: We hack together the directory name here instead of
2719  // using LI to ensure stable path separators across Windows and
2720  // Linux.
2721  GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2722  GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2723  IsValid = true;
2724  }
2725  }
2726 }
2727 
2728 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2729  const llvm::Triple &TargetTriple, const ArgList &Args,
2730  const SmallVectorImpl<StringRef> &CandidateTriples,
2731  const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2732  if (!D.getVFS().exists(concat(D.SysRoot, GentooConfigDir)))
2733  return false;
2734 
2735  for (StringRef CandidateTriple : CandidateTriples) {
2736  if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2737  return true;
2738  }
2739 
2740  for (StringRef CandidateTriple : CandidateBiarchTriples) {
2741  if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
2742  return true;
2743  }
2744  return false;
2745 }
2746 
2747 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2748  const llvm::Triple &TargetTriple, const ArgList &Args,
2749  StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2750  llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2751  D.getVFS().getBufferForFile(concat(D.SysRoot, GentooConfigDir,
2752  "/config-" + CandidateTriple.str()));
2753  if (File) {
2754  SmallVector<StringRef, 2> Lines;
2755  File.get()->getBuffer().split(Lines, "\n");
2756  for (StringRef Line : Lines) {
2757  Line = Line.trim();
2758  // CURRENT=triple-version
2759  if (!Line.consume_front("CURRENT="))
2760  continue;
2761  // Process the config file pointed to by CURRENT.
2762  llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2763  D.getVFS().getBufferForFile(
2764  concat(D.SysRoot, GentooConfigDir, "/" + Line));
2765  std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-');
2766  // List of paths to scan for libraries.
2767  SmallVector<StringRef, 4> GentooScanPaths;
2768  // Scan the Config file to find installed GCC libraries path.
2769  // Typical content of the GCC config file:
2770  // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2771  // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2772  // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2773  // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2774  // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2775  // We are looking for the paths listed in LDPATH=... .
2776  if (ConfigFile) {
2777  SmallVector<StringRef, 2> ConfigLines;
2778  ConfigFile.get()->getBuffer().split(ConfigLines, "\n");
2779  for (StringRef ConfLine : ConfigLines) {
2780  ConfLine = ConfLine.trim();
2781  if (ConfLine.consume_front("LDPATH=")) {
2782  // Drop '"' from front and back if present.
2783  ConfLine.consume_back("\"");
2784  ConfLine.consume_front("\"");
2785  // Get all paths sperated by ':'
2786  ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false);
2787  }
2788  }
2789  }
2790  // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2791  std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2792  + ActiveVersion.second.str();
2793  GentooScanPaths.push_back(StringRef(basePath));
2794 
2795  // Scan all paths for GCC libraries.
2796  for (const auto &GentooScanPath : GentooScanPaths) {
2797  std::string GentooPath = concat(D.SysRoot, GentooScanPath);
2798  if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2799  if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2800  NeedsBiarchSuffix))
2801  continue;
2802 
2803  Version = GCCVersion::Parse(ActiveVersion.second);
2804  GCCInstallPath = GentooPath;
2805  GCCParentLibPath = GentooPath + std::string("/../../..");
2806  GCCTriple.setTriple(ActiveVersion.first);
2807  IsValid = true;
2808  return true;
2809  }
2810  }
2811  }
2812  }
2813 
2814  return false;
2815 }
2816 
2817 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2818  const ArgList &Args)
2819  : ToolChain(D, Triple, Args), GCCInstallation(D),
2820  CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) {
2821  getProgramPaths().push_back(getDriver().getInstalledDir());
2822  if (getDriver().getInstalledDir() != getDriver().Dir)
2823  getProgramPaths().push_back(getDriver().Dir);
2824 }
2825 
2826 Generic_GCC::~Generic_GCC() {}
2827 
2828 Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
2829  switch (AC) {
2830  case Action::PreprocessJobClass:
2831  if (!Preprocess)
2832  Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2833  return Preprocess.get();
2834  case Action::CompileJobClass:
2835  if (!Compile)
2836  Compile.reset(new tools::gcc::Compiler(*this));
2837  return Compile.get();
2838  default:
2839  return ToolChain::getTool(AC);
2840  }
2841 }
2842 
2843 Tool *Generic_GCC::buildAssembler() const {
2844  return new tools::gnutools::Assembler(*this);
2845 }
2846 
2847 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2848 
2849 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2850  // Print the information about how we detected the GCC installation.
2851  GCCInstallation.print(OS);
2852  CudaInstallation.print(OS);
2853  RocmInstallation.print(OS);
2854 }
2855 
2856 ToolChain::UnwindTableLevel
2857 Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const {
2858  switch (getArch()) {
2859  case llvm::Triple::aarch64:
2860  case llvm::Triple::ppc:
2861  case llvm::Triple::ppcle:
2862  case llvm::Triple::ppc64:
2863  case llvm::Triple::ppc64le:
2864  case llvm::Triple::x86:
2865  case llvm::Triple::x86_64:
2866  return UnwindTableLevel::Asynchronous;
2867  default:
2868  return UnwindTableLevel::None;
2869  }
2870 }
2871 
2872 bool Generic_GCC::isPICDefault() const {
2873  switch (getArch()) {
2874  case llvm::Triple::x86_64:
2875  return getTriple().isOSWindows();
2876  case llvm::Triple::mips64:
2877  case llvm::Triple::mips64el:
2878  return true;
2879  default:
2880  return false;
2881  }
2882 }
2883 
2884 bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const {
2885  return false;
2886 }
2887 
2888 bool Generic_GCC::isPICDefaultForced() const {
2889  return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2890 }
2891 
2892 bool Generic_GCC::IsIntegratedAssemblerDefault() const {
2893  switch (getTriple().getArch()) {
2894  case llvm::Triple::aarch64:
2895  case llvm::Triple::aarch64_be:
2896  case llvm::Triple::amdgcn:
2897  case llvm::Triple::arm:
2898  case llvm::Triple::armeb:
2899  case llvm::Triple::avr:
2900  case llvm::Triple::bpfel:
2901  case llvm::Triple::bpfeb:
2902  case llvm::Triple::csky:
2903  case llvm::Triple::hexagon:
2904  case llvm::Triple::lanai:
2905  case llvm::Triple::loongarch32:
2906  case llvm::Triple::loongarch64:
2907  case llvm::Triple::m68k:
2908  case llvm::Triple::mips:
2909  case llvm::Triple::mipsel:
2910  case llvm::Triple::mips64:
2911  case llvm::Triple::mips64el:
2912  case llvm::Triple::msp430:
2913  case llvm::Triple::ppc:
2914  case llvm::Triple::ppcle:
2915  case llvm::Triple::ppc64:
2916  case llvm::Triple::ppc64le:
2917  case llvm::Triple::r600:
2918  case llvm::Triple::riscv32:
2919  case llvm::Triple::riscv64:
2920  case llvm::Triple::sparc:
2921  case llvm::Triple::sparcel:
2922  case llvm::Triple::sparcv9:
2923  case llvm::Triple::systemz:
2924  case llvm::Triple::thumb:
2925  case llvm::Triple::thumbeb:
2926  case llvm::Triple::ve:
2927  case llvm::Triple::x86:
2928  case llvm::Triple::x86_64:
2929  return true;
2930  default:
2931  return false;
2932  }
2933 }
2934 
2935 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) {
2936  // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
2937  // least) put various tools in a triple-prefixed directory off of the parent
2938  // of the GCC installation. We use the GCC triple here to ensure that we end
2939  // up with tools that support the same amount of cross compiling as the
2940  // detected GCC installation. For example, if we find a GCC installation
2941  // targeting x86_64, but it is a bi-arch GCC installation, it can also be
2942  // used to target i386.
2943  if (GCCInstallation.isValid()) {
2944  PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" +
2945  GCCInstallation.getTriple().str() + "/bin")
2946  .str());
2947  }
2948 }
2949 
2950 void Generic_GCC::AddMultilibPaths(const Driver &D,
2951  const std::string &SysRoot,
2952  const std::string &OSLibDir,
2953  const std::string &MultiarchTriple,
2954  path_list &Paths) {
2955  // Add the multilib suffixed paths where they are available.
2956  if (GCCInstallation.isValid()) {
2957  const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
2958  const std::string &LibPath =
2959  std::string(GCCInstallation.getParentLibPath());
2960 
2961  // Sourcery CodeBench MIPS toolchain holds some libraries under
2962  // a biarch-like suffix of the GCC installation.
2963  if (const auto &PathsCallback = Multilibs.filePathsCallback())
2964  for (const auto &Path : PathsCallback(SelectedMultilib))
2965  addPathIfExists(D, GCCInstallation.getInstallPath() + Path, Paths);
2966 
2967  // Add lib/gcc/$triple/$version, with an optional /multilib suffix.
2968  addPathIfExists(
2969  D, GCCInstallation.getInstallPath() + SelectedMultilib.gccSuffix(),
2970  Paths);
2971 
2972  // Add lib/gcc/$triple/$libdir
2973  // For GCC built with --enable-version-specific-runtime-libs.
2974  addPathIfExists(D, GCCInstallation.getInstallPath() + "/../" + OSLibDir,
2975  Paths);
2976 
2977  // GCC cross compiling toolchains will install target libraries which ship
2978  // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
2979  // any part of the GCC installation in
2980  // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
2981  // debatable, but is the reality today. We need to search this tree even
2982  // when we have a sysroot somewhere else. It is the responsibility of
2983  // whomever is doing the cross build targeting a sysroot using a GCC
2984  // installation that is *not* within the system root to ensure two things:
2985  //
2986  // 1) Any DSOs that are linked in from this tree or from the install path
2987  // above must be present on the system root and found via an
2988  // appropriate rpath.
2989  // 2) There must not be libraries installed into
2990  // <prefix>/<triple>/<libdir> unless they should be preferred over
2991  // those within the system root.
2992  //
2993  // Note that this matches the GCC behavior. See the below comment for where
2994  // Clang diverges from GCC's behavior.
2995  addPathIfExists(D,
2996  LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
2997  SelectedMultilib.osSuffix(),
2998  Paths);
2999 
3000  // If the GCC installation we found is inside of the sysroot, we want to
3001  // prefer libraries installed in the parent prefix of the GCC installation.
3002  // It is important to *not* use these paths when the GCC installation is
3003  // outside of the system root as that can pick up unintended libraries.
3004  // This usually happens when there is an external cross compiler on the
3005  // host system, and a more minimal sysroot available that is the target of
3006  // the cross. Note that GCC does include some of these directories in some
3007  // configurations but this seems somewhere between questionable and simply
3008  // a bug.
3009  if (StringRef(LibPath).startswith(SysRoot))
3010  addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths);
3011  }
3012 }
3013 
3014 void Generic_GCC::AddMultiarchPaths(const Driver &D,
3015  const std::string &SysRoot,
3016  const std::string &OSLibDir,
3017  path_list &Paths) {
3018  if (GCCInstallation.isValid()) {
3019  const std::string &LibPath =
3020  std::string(GCCInstallation.getParentLibPath());
3021  const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3022  const Multilib &Multilib = GCCInstallation.getMultilib();
3023  addPathIfExists(
3024  D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
3025  Paths);
3026  }
3027 }
3028 
3029 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
3030  ArgStringList &CC1Args) const {
3031  // Add include directories specific to the selected multilib set and multilib.
3032  if (!GCCInstallation.isValid())
3033  return;
3034  // gcc TOOL_INCLUDE_DIR.
3035  const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3036  std::string LibPath(GCCInstallation.getParentLibPath());
3037  addSystemInclude(DriverArgs, CC1Args,
3038  Twine(LibPath) + "/../" + GCCTriple.str() + "/include");
3039 
3040  const auto &Callback = Multilibs.includeDirsCallback();
3041  if (Callback) {
3042  for (const auto &Path : Callback(GCCInstallation.getMultilib()))
3043  addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
3044  GCCInstallation.getInstallPath() + Path);
3045  }
3046 }
3047 
3048 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
3049  ArgStringList &CC1Args) const {
3050  if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdincxx,
3051  options::OPT_nostdlibinc))
3052  return;
3053 
3054  switch (GetCXXStdlibType(DriverArgs)) {
3055  case ToolChain::CST_Libcxx:
3056  addLibCxxIncludePaths(DriverArgs, CC1Args);
3057  break;
3058 
3059  case ToolChain::CST_Libstdcxx:
3060  addLibStdCxxIncludePaths(DriverArgs, CC1Args);
3061  break;
3062  }
3063 }
3064 
3065 void
3066 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3067  llvm::opt::ArgStringList &CC1Args) const {
3068  const Driver &D = getDriver();
3069  std::string SysRoot = computeSysRoot();
3070  std::string Target = getTripleString();
3071 
3072  auto AddIncludePath = [&](std::string Path) {
3073  std::string Version = detectLibcxxVersion(Path);
3074  if (Version.empty())
3075  return false;
3076 
3077  // First add the per-target include path if it exists.
3078  std::string TargetDir = Path + "/" + Target + "/c++/" + Version;
3079  if (D.getVFS().exists(TargetDir))
3080  addSystemInclude(DriverArgs, CC1Args, TargetDir);
3081 
3082  // Second add the generic one.
3083  addSystemInclude(DriverArgs, CC1Args, Path + "/c++/" + Version);
3084  return true;
3085  };
3086 
3087  // Android never uses the libc++ headers installed alongside the toolchain,
3088  // which are generally incompatible with the NDK libraries anyway.
3089  if (!getTriple().isAndroid())
3090  if (AddIncludePath(getDriver().Dir + "/../include"))
3091  return;
3092  // If this is a development, non-installed, clang, libcxx will
3093  // not be found at ../include/c++ but it likely to be found at
3094  // one of the following two locations:
3095  if (AddIncludePath(concat(SysRoot, "/usr/local/include")))
3096  return;
3097  if (AddIncludePath(concat(SysRoot, "/usr/include")))
3098  return;
3099 }
3100 
3101 bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple,
3102  Twine IncludeSuffix,
3103  const llvm::opt::ArgList &DriverArgs,
3104  llvm::opt::ArgStringList &CC1Args,
3105  bool DetectDebian) const {
3106  if (!getVFS().exists(IncludeDir))
3107  return false;
3108 
3109  // Debian native gcc uses g++-multiarch-incdir.diff which uses
3110  // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of
3111  // include/c++/10/x86_64-linux-gnu$IncludeSuffix.
3112  std::string Dir = IncludeDir.str();
3113  StringRef Include =
3114  llvm::sys::path::parent_path(llvm::sys::path::parent_path(Dir));
3115  std::string Path =
3116  (Include + "/" + Triple + Dir.substr(Include.size()) + IncludeSuffix)
3117  .str();
3118  if (DetectDebian && !getVFS().exists(Path))
3119  return false;
3120 
3121  // GPLUSPLUS_INCLUDE_DIR
3122  addSystemInclude(DriverArgs, CC1Args, IncludeDir);
3123  // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent
3124  // include directory.
3125  if (DetectDebian)
3126  addSystemInclude(DriverArgs, CC1Args, Path);
3127  else if (!Triple.empty())
3128  addSystemInclude(DriverArgs, CC1Args,
3129  IncludeDir + "/" + Triple + IncludeSuffix);
3130  // GPLUSPLUS_BACKWARD_INCLUDE_DIR
3131  addSystemInclude(DriverArgs, CC1Args, IncludeDir + "/backward");
3132  return true;
3133 }
3134 
3135 bool Generic_GCC::addGCCLibStdCxxIncludePaths(
3136  const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,
3137  StringRef DebianMultiarch) const {
3138  assert(GCCInstallation.isValid());
3139 
3140  // By default, look for the C++ headers in an include directory adjacent to
3141  // the lib directory of the GCC installation. Note that this is expect to be
3142  // equivalent to '/usr/include/c++/X.Y' in almost all cases.
3143  StringRef LibDir = GCCInstallation.getParentLibPath();
3144  StringRef InstallDir = GCCInstallation.getInstallPath();
3145  StringRef TripleStr = GCCInstallation.getTriple().str();
3146  const Multilib &Multilib = GCCInstallation.getMultilib();
3147  const GCCVersion &Version = GCCInstallation.getVersion();
3148 
3149  // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty).
3150  if (addLibStdCXXIncludePaths(
3151  LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text,
3152  TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args))
3153  return true;
3154 
3155  // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not
3156  // empty). Like above but for GCC built with
3157  // --enable-version-specific-runtime-libs.
3158  if (addLibStdCXXIncludePaths(LibDir.str() + "/gcc/" + TripleStr + "/" +
3159  Version.Text + "/include/c++/",
3160  TripleStr, Multilib.includeSuffix(), DriverArgs,
3161  CC1Args))
3162  return true;
3163 
3164  // Detect Debian g++-multiarch-incdir.diff.
3165  if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text,
3166  DebianMultiarch, Multilib.includeSuffix(),
3167  DriverArgs, CC1Args, /*Debian=*/true))
3168  return true;
3169 
3170  // Try /../include/c++/$version (gcc --print-multiarch is empty).
3171  if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text,
3172  TripleStr, Multilib.includeSuffix(), DriverArgs,
3173  CC1Args))
3174  return true;
3175 
3176  // Otherwise, fall back on a bunch of options which don't use multiarch
3177  // layouts for simplicity.
3178  const std::string LibStdCXXIncludePathCandidates[] = {
3179  // Gentoo is weird and places its headers inside the GCC install,
3180  // so if the first attempt to find the headers fails, try these patterns.
3181  InstallDir.str() + "/include/g++-v" + Version.Text,
3182  InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
3183  Version.MinorStr,
3184  InstallDir.str() + "/include/g++-v" + Version.MajorStr,
3185  };
3186 
3187  for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
3188  if (addLibStdCXXIncludePaths(IncludePath, TripleStr,
3189  Multilib.includeSuffix(), DriverArgs, CC1Args))
3190  return true;
3191  }
3192  return false;
3193 }
3194 
3195 void
3196 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3197  llvm::opt::ArgStringList &CC1Args) const {
3198  if (GCCInstallation.isValid()) {
3199  addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args,
3200  GCCInstallation.getTriple().str());
3201  }
3202 }
3203 
3204 llvm::opt::DerivedArgList *
3205 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
3206  Action::OffloadKind DeviceOffloadKind) const {
3207 
3208  // If this tool chain is used for an OpenMP offloading device we have to make
3209  // sure we always generate a shared library regardless of the commands the
3210  // user passed to the host. This is required because the runtime library
3211  // is required to load the device image dynamically at run time.
3212  if (DeviceOffloadKind == Action::OFK_OpenMP) {
3213  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3214  const OptTable &Opts = getDriver().getOpts();
3215 
3216  // Request the shared library. Given that these options are decided
3217  // implicitly, they do not refer to any base argument.
3218  DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
3219  DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
3220 
3221  // Filter all the arguments we don't care passing to the offloading
3222  // toolchain as they can mess up with the creation of a shared library.
3223  for (auto *A : Args) {
3224  switch ((options::ID)A->getOption().getID()) {
3225  default:
3226  DAL->append(A);
3227  break;
3228  case options::OPT_shared:
3229  case options::OPT_dynamic:
3230  case options::OPT_static:
3231  case options::OPT_fPIC:
3232  case options::OPT_fno_PIC:
3233  case options::OPT_fpic:
3234  case options::OPT_fno_pic:
3235  case options::OPT_fPIE:
3236  case options::OPT_fno_PIE:
3237  case options::OPT_fpie:
3238  case options::OPT_fno_pie:
3239  break;
3240  }
3241  }
3242  return DAL;
3243  }
3244  return nullptr;
3245 }
3246 
3247 void Generic_ELF::anchor() {}
3248 
3249 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3250  ArgStringList &CC1Args,
3251  Action::OffloadKind) const {
3252  if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
3253  options::OPT_fno_use_init_array, true))
3254  CC1Args.push_back("-fno-use-init-array");
3255 }
clang::driver::tools::mips::getGnuCompatibleMipsABIName
StringRef getGnuCompatibleMipsABIName(StringRef ABI)
Definition: Mips.cpp:143
clang::driver::toolchains
Definition: AIX.h:55
Mips.h
clang::driver::tools::csky::getCSKYArchName
std::optional< llvm::StringRef > getCSKYArchName(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
clang::driver::Multilib::flags_list
std::vector< std::string > flags_list
Definition: Multilib.h:30
clang::driver::tools::gcc::Linker::RenderExtraToolArgs
void RenderExtraToolArgs(const JobAction &JA, llvm::opt::ArgStringList &CmdArgs) const override
RenderExtraToolArgs - Render any arguments necessary to force the particular tool mode.
Definition: Gnu.cpp:216
clang::driver::tools::AddAssemblerKPIC
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
clang::driver::Multilib::isDefault
bool isDefault() const
Check whether the default is selected.
Definition: Multilib.h:106
clang::driver::ToolChain::UnwindTableLevel::Asynchronous
@ Asynchronous
clang::driver::options::LinkerInput
@ LinkerInput
Definition: Options.h:26
isMips16
static bool isMips16(const ArgList &Args)
Definition: Gnu.cpp:1034
clang::driver::ToolChain::getCompilerRT
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:544
clang::driver::MultilibSet::Either
MultilibSet & Either(const Multilib &M1, const Multilib &M2)
Add a set of mutually incompatible Multilib segments.
Definition: Multilib.cpp:152
clang::driver::ToolChain::getVFS
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:127
clang::driver::tools::ppc::getPPCAsmModeForCPU
const char * getPPCAsmModeForCPU(StringRef Name)
Definition: PPC.cpp:87
isMSP430
static bool isMSP430(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:1044
clang::driver::ToolChain::getProgramPaths
path_list & getProgramPaths()
Definition: ToolChain.h:281
isSoftFloatABI
static bool isSoftFloatABI(const ArgList &Args)
Definition: Gnu.cpp:1015
clang::DeclaratorContext::File
@ File
Driver.h
string
string(SUBSTRING ${CMAKE_CURRENT_BINARY_DIR} 0 ${PATH_LIB_START} PATH_HEAD) string(SUBSTRING $
Definition: CMakeLists.txt:23
clang::driver::toolchains::Generic_GCC::addLibCxxIncludePaths
virtual void addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:3066
clang::driver::tools::ParsePICArgs
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
clang::driver::tools::getDwarfVersion
unsigned getDwarfVersion(const ToolChain &TC, const llvm::opt::ArgList &Args)
Definition: CommonArgs.cpp:1629
clang::driver::toolchains::Generic_GCC::TranslateArgs
llvm::opt::DerivedArgList * TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind) const override
TranslateArgs - Create a new derived argument list for any argument translations this ToolChain may w...
Definition: Gnu.cpp:3205
clang::driver::MultilibSet
Definition: Multilib.h:114
clang::driver::findMIPSMultilibs
bool findMIPSMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const llvm::opt::ArgList &Args, DetectedMultilibs &Result)
llvm::SmallVector
Definition: LLVM.h:38
clang::driver::ToolChain::UnwindTableLevel
UnwindTableLevel
Definition: ToolChain.h:111
clang::driver::tools::csky::FloatABI::Hard
@ Hard
clang::driver::toolchains::Generic_GCC::GCCInstallation
GCCInstallationDetector GCCInstallation
Definition: Gnu.h:288
clang::driver::tools::arm::getARMFloatABI
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
clang::driver::Action::ActionClass
ActionClass
Definition: Action.h:55
clang::driver::toolchains::Generic_GCC::AddMultiarchPaths
void AddMultiarchPaths(const Driver &D, const std::string &SysRoot, const std::string &OSLibDir, path_list &Paths)
Definition: Gnu.cpp:3014
clang::driver::toolchains::Generic_GCC::IsIntegratedAssemblerDefault
bool IsIntegratedAssemblerDefault() const override
IsIntegratedAssemblerDefault - Does this tool chain enable -integrated-as by default.
Definition: Gnu.cpp:2892
clang::MultiVersionKind::Target
@ Target
clang::driver::tools::csky::FloatABI::SoftFP
@ SoftFP
clang::driver::toolchains::Generic_GCC::CudaInstallation
CudaInstallationDetector CudaInstallation
Definition: Gnu.h:289
clang::driver::tools::mips::hasMipsAbiArg
bool hasMipsAbiArg(const llvm::opt::ArgList &Args, const char *Value)
clang::driver::MultilibSet::size
unsigned size() const
Definition: Multilib.h:169
clang::driver::ToolChain::getDriver
const Driver & getDriver() const
Definition: ToolChain.h:236
clang::driver::ToolChain::detectLibcxxVersion
virtual std::string detectLibcxxVersion(StringRef IncludePath) const
Definition: ToolChain.cpp:994
makeMultilib
static Multilib makeMultilib(StringRef commonSuffix)
Definition: Gnu.cpp:1048
clang::driver::ToolChain::FT_Object
@ FT_Object
Definition: ToolChain.h:129
clang::driver::ToolChain::getTripleString
std::string getTripleString() const
Definition: ToolChain.h:261
clang::driver::ToolChain::addFastMathRuntimeIfAvailable
bool addFastMathRuntimeIfAvailable(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFastMathRuntimeIfAvailable - If a runtime library exists that sets global flags for unsafe floatin...
Definition: ToolChain.cpp:1106
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::isValid
bool isValid() const
Check whether we detected a valid GCC install.
Definition: Gnu.h:224
Sparc.h
clang::driver::tools::getCPUName
std::string getCPUName(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
clang::ComparisonCategoryType::First
@ First
clang::driver::toolchains::Generic_GCC::GCCVersion::Minor
int Minor
Definition: Gnu.h:166
clang::driver::toolchains::Generic_GCC::AddMultilibPaths
void AddMultilibPaths(const Driver &D, const std::string &SysRoot, const std::string &OSLibDir, const std::string &MultiarchTriple, path_list &Paths)
Definition: Gnu.cpp:2950
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static bool findMSP430Multilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1595
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std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:638
clang::driver::MultilibSet::FilterOut
MultilibSet & FilterOut(FilterCallback F)
Filter out some subset of the Multilibs using a user defined callback.
Definition: Multilib.cpp:212
clang::driver::tools::SplitDebugInfo
void SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T, const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Output, const char *OutFile)
clang::driver::toolchains::Generic_GCC::isPICDefault
bool isPICDefault() const override
Test whether this toolchain defaults to PIC.
Definition: Gnu.cpp:2872
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const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:373
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InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
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FloatABI getCSKYFloatABI(const Driver &D, const llvm::opt::ArgList &Args)
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static bool isMipsEL(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:1030
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MultilibSet & setFilePathsCallback(IncludeDirsFunc F)
Definition: Multilib.h:181
clang::driver::ToolChain::addExternCSystemIncludeIfExists
static void addExternCSystemIncludeIfExists(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Definition: ToolChain.cpp:969
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void PushPPaths(ToolChain::path_list &PPaths)
Definition: Gnu.cpp:2935
clang::driver::Action::OFK_OpenMP
@ OFK_OpenMP
Definition: Action.h:94
SystemZ.h
clang::driver::toolchains::Generic_GCC::AddMultilibIncludeArgs
void AddMultilibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:3029
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Tool * buildAssembler() const override
Definition: Gnu.cpp:2843
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std::string InstalledDir
The path to the installed clang directory, if any.
Definition: Driver.h:163
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StringRef getRISCVArch(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
Definition: RISCV.cpp:230
Suffixes
static constexpr CPUSuffix Suffixes[]
Definition: Hexagon.cpp:233
clang::driver::tools::AddLinkerInputs
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
clang::driver::toolchains::Generic_GCC::GCCVersion
Struct to store and manipulate GCC versions.
Definition: Gnu.h:161
forwardToGCC
static bool forwardToGCC(const Option &O)
Definition: Gnu.cpp:43
clang::StructuralEquivalenceKind::Default
@ Default
clang::driver::Action::PreprocessJobClass
@ PreprocessJobClass
Definition: Action.h:59
clang::driver::tools::gnutools::Linker::ConstructJob
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: Gnu.cpp:391
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LTOKind getLTOMode(bool IsOffload=false) const
Get the specific kind of LTO being performed.
Definition: Driver.h:677
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DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:143
clang::driver::ToolChain::isPIEDefault
virtual bool isPIEDefault(const llvm::opt::ArgList &Args) const =0
Test whether this toolchain defaults to PIE.
clang::driver::Multilib::gccSuffix
const std::string & gccSuffix() const
Get the detected GCC installation path suffix for the multi-arch target variant.
Definition: Multilib.h:45
clang::driver::toolchains::Generic_GCC::getTool
Tool * getTool(Action::ActionClass AC) const override
Definition: Gnu.cpp:2828
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void addFortranRuntimeLibs(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
Adds Fortran runtime libraries to CmdArgs.
Definition: CommonArgs.cpp:888
clang::driver::Tool
Tool - Information on a specific compilation tool.
Definition: Tool.h:32
getStatic
static bool getStatic(const ArgList &Args)
Definition: Gnu.cpp:342
clang::driver::toolchains::Generic_GCC::GCCVersion::isOlderThan
bool isOlderThan(int RHSMajor, int RHSMinor, int RHSPatch, StringRef RHSPatchSuffix=StringRef()) const
Generic_GCC - A tool chain using the 'gcc' command to perform all subcommands; this relies on gcc tra...
Definition: Gnu.cpp:1884
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void claimNoWarnArgs(const llvm::opt::ArgList &Args)
clang::driver::toolchains::Generic_ELF
Definition: Gnu.h:363
Options.h
clang::driver::InputInfo::isFilename
bool isFilename() const
Definition: InputInfo.h:75
findRISCVBareMetalMultilibs
static void findRISCVBareMetalMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1684
clang::driver::toolchains::Generic_GCC::GCCVersion::Text
std::string Text
The unparsed text of the version.
Definition: Gnu.h:163
findMipsAndroidMultilibs
static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path, const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1144
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static std::string concat(StringRef Path, const Twine &A, const Twine &B="", const Twine &C="", const Twine &D="")
Definition: ToolChain.cpp:986
clang::driver::toolchains::Generic_GCC::Generic_GCC
Generic_GCC(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Gnu.cpp:2817
clang::driver::Multilib::osSuffix
const std::string & osSuffix() const
Get the detected os path suffix for the multi-arch target variant.
Definition: Multilib.h:56
CSKY.h
clang::interp::LE
bool LE(InterpState &S, CodePtr OpPC)
Definition: Interp.h:628
clang::driver::Action::getType
types::ID getType() const
Definition: Action.h:147
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::init
void init(const llvm::Triple &TargetTriple, const llvm::opt::ArgList &Args, ArrayRef< std::string > ExtraTripleAliases=std::nullopt)
Initialize a GCCInstallationDetector from the driver.
Definition: Gnu.cpp:1999
clang::driver::LTOK_Thin
@ LTOK_Thin
Definition: Driver.h:60
clang::driver::DetectedMultilibs::SelectedMultilib
Multilib SelectedMultilib
The primary multilib appropriate for the given flags.
Definition: Gnu.h:26
clang::driver::MultilibSet::includeDirsCallback
const IncludeDirsFunc & includeDirsCallback() const
Definition: Multilib.h:179
llvm::opt
Definition: DiagnosticOptions.h:19
DriverDiagnostic.h
clang::driver::options::ID
ID
Definition: Options.h:43
clang::driver::ResponseFileSupport::AtFileCurCP
static constexpr ResponseFileSupport AtFileCurCP()
Definition: Job.h:92
clang::driver::InputInfo::isNothing
bool isNothing() const
Definition: InputInfo.h:74
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::getTriple
const llvm::Triple & getTriple() const
Get the GCC triple for the detected install.
Definition: Gnu.h:227
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::getParentLibPath
StringRef getParentLibPath() const
Get the detected GCC parent lib path.
Definition: Gnu.h:233
clang::driver::tools::mips::isNaN2008
bool isNaN2008(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
clang::driver::tools::addPathIfExists
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:134
clang::driver::tools::systemz::getSystemZTargetCPU
std::string getSystemZTargetCPU(const llvm::opt::ArgList &Args)
Tool.h
clang::driver::ToolChain::getTriple
const llvm::Triple & getTriple() const
Definition: ToolChain.h:238
findBiarchMultilibs
static bool findBiarchMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, bool NeedsBiarchSuffix, DetectedMultilibs &Result)
Definition: Gnu.cpp:1775
clang::driver::ToolChain::SelectedMultilib
Multilib SelectedMultilib
Definition: ToolChain.h:190
clang::driver::Driver::SysRoot
std::string SysRoot
sysroot, if present
Definition: Driver.h:182
clang::driver::Action::isHostOffloading
bool isHostOffloading(unsigned int OKind) const
Check if this action have any offload kinds.
Definition: Action.h:217
clang::driver::Multilib
This corresponds to a single GCC Multilib, or a segment of one controlled by a command line flag.
Definition: Multilib.h:28
clang::driver::ToolChain::CST_Libcxx
@ CST_Libcxx
Definition: ToolChain.h:96
findRISCVMultilibs
static void findRISCVMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1738
clang::driver::Driver::CCCIsCXX
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:212
clang::driver::Driver::getCCCGenericGCCName
const std::string & getCCCGenericGCCName() const
Name to use when invoking gcc/g++.
Definition: Driver.h:367
findCSKYMultilibs
static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1621
clang::driver::toolchains::Generic_GCC::GCCVersion::PatchSuffix
std::string PatchSuffix
Any textual suffix on the patch number.
Definition: Gnu.h:172
getGCCToolchainDir
static llvm::StringRef getGCCToolchainDir(const ArgList &Args, llvm::StringRef SysRoot)
Definition: Gnu.cpp:1975
clang::driver::tools::addXRayRuntime
bool addXRayRuntime(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
clang::driver::tools::gcc::Compiler::RenderExtraToolArgs
void RenderExtraToolArgs(const JobAction &JA, llvm::opt::ArgStringList &CmdArgs) const override
RenderExtraToolArgs - Render any arguments necessary to force the particular tool mode.
Definition: Gnu.cpp:188
clang::driver::types::isLLVMIR
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:252
Base
clang::driver::toolchains::Generic_GCC::GCCVersion::MajorStr
std::string MajorStr
The text of the parsed major, and major+minor versions.
Definition: Gnu.h:169
Line
const AnnotatedLine * Line
Definition: UsingDeclarationsSorter.cpp:95
clang::driver::MultilibSet::filePathsCallback
const IncludeDirsFunc & filePathsCallback() const
Definition: Multilib.h:186
clang::driver::tools::gcc::Preprocessor::RenderExtraToolArgs
void RenderExtraToolArgs(const JobAction &JA, llvm::opt::ArgStringList &CmdArgs) const override
RenderExtraToolArgs - Render any arguments necessary to force the particular tool mode.
Definition: Gnu.cpp:183
clang::driver::toolchains::Generic_GCC::GCCVersion::Parse
static GCCVersion Parse(StringRef VersionText)
Parse a GCCVersion object out of a string of text.
Definition: Gnu.cpp:1928
findAndroidArmMultilibs
static void findAndroidArmMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1553
Linux.h
clang::driver::ToolChain::CST_Libstdcxx
@ CST_Libstdcxx
Definition: ToolChain.h:97
findMipsImgMultilibs
static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1387
clang::driver::toolchains::Generic_GCC::~Generic_GCC
~Generic_GCC() override
Definition: Gnu.cpp:2826
clang::driver::toolchains::Generic_GCC::addGCCLibStdCxxIncludePaths
bool addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, StringRef DebianMultiarch) const
Definition: Gnu.cpp:3135
clang::driver::ToolChain::getArch
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:252
clang::driver::ToolChain::AddFilePathLibArgs
void AddFilePathLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFilePathLibArgs - Add each thing in getFilePaths() as a "-L" option.
Definition: ToolChain.cpp:1074
clang::driver::tools::gcc::Linker
Definition: Gnu.h:126
clang::driver::ToolChain::ShouldLinkCXXStdlib
bool ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const
Returns if the C++ standard library should be linked in.
Definition: ToolChain.cpp:1049
clang::driver::options::LinkOption
@ LinkOption
Definition: Options.h:34
clang::driver::RocmInstallationDetector::print
void print(raw_ostream &OS) const
Print information about the detected ROCm installation.
Definition: AMDGPU.cpp:487
clang::driver::types::canTypeBeUserSpecified
bool canTypeBeUserSpecified(ID Id)
canTypeBeUserSpecified - Can this type be specified on the command line (by the type name); this is u...
Definition: Types.cpp:105
clang::driver::tools::addLTOOptions
void addLTOOptions(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfo &Input, bool IsThinLTO)
clang::driver::toolchains::Generic_GCC::RocmInstallation
RocmInstallationDetector RocmInstallation
Definition: Gnu.h:290
ToolChain.h
clang::transformer::remove
ASTEdit remove(RangeSelector S)
Removes the source selected by S.
Definition: RewriteRule.cpp:162
clang::driver::tools::addHIPRuntimeLibArgs
void addHIPRuntimeLibArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
Definition: CommonArgs.cpp:2338
findMipsMtiMultilibs
static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1215
P
StringRef P
Definition: ASTMatchersInternal.cpp:564
clang::driver::Driver::isUsingLTO
bool isUsingLTO(bool IsOffload=false) const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:672
clang::driver::ToolChain::UnwindTableLevel::None
@ None
clang::driver::ToolChain::getTool
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:402
isArmOrThumbArch
static bool isArmOrThumbArch(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:1026
clang::driver::toolchains::Generic_GCC::printVerboseInfo
void printVerboseInfo(raw_ostream &OS) const override
Dispatch to the specific toolchain for verbose printing.
Definition: Gnu.cpp:2849
clang::driver::ToolChain::AddCXXStdlibLibArgs
virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: ToolChain.cpp:1055
getLDMOption
static const char * getLDMOption(const llvm::Triple &T, const ArgList &Args)
Definition: Gnu.cpp:245
clang::driver::ToolChain::GetRuntimeLibType
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:859
Compilation.h
Gnu.h
clang::driver::ToolChain
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:91
clang::driver::ToolChain::GetLinkerPath
std::string GetLinkerPath(bool *LinkerIsLLD=nullptr) const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name.
Definition: ToolChain.cpp:646
clang::driver::ToolChain::RLT_CompilerRT
@ RLT_CompilerRT
Definition: ToolChain.h:101
llvm::ArrayRef
Definition: LLVM.h:34
Value
Value
Definition: UninitializedValues.cpp:102
clang::driver::tools::csky::FloatABI
FloatABI
Definition: CSKY.h:24
clang::driver::toolchains::Generic_GCC::getDefaultUnwindTableLevel
UnwindTableLevel getDefaultUnwindTableLevel(const llvm::opt::ArgList &Args) const override
How detailed should the unwind tables be by default.
Definition: Gnu.cpp:2857
clang::driver::ToolChain::computeSysRoot
virtual std::string computeSysRoot() const
Return the sysroot, possibly searching for a default sysroot using target-specific logic.
Definition: ToolChain.cpp:833
clang::driver::tools::gnutools::Assembler
Definition: Gnu.h:41
clang::driver::tools::AddRunTimeLibs
void AddRunTimeLibs(const ToolChain &TC, const Driver &D, llvm::opt::ArgStringList &CmdArgs, const llvm::opt::ArgList &Args)
clang::driver::tools::gcc::Preprocessor
Definition: Gnu.h:103
isMicroMips
static bool isMicroMips(const ArgList &Args)
Definition: Gnu.cpp:1039
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::getInstallPath
StringRef getInstallPath() const
Get the detected GCC installation path.
Definition: Gnu.h:230
clang::driver::Multilib::flag
Multilib & flag(StringRef F)
Add a flag to the flags list Flag must be a flag accepted by the driver with its leading '-' removed,...
Definition: Multilib.h:92
clang::driver::Compilation
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::getVersion
const GCCVersion & getVersion() const
Get the detected GCC version string.
Definition: Gnu.h:246
clang::driver::Action::CompileJobClass
@ CompileJobClass
Definition: Action.h:64
clang::driver::tools::gnutools::StaticLibTool::ConstructJob
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: Gnu.cpp:347
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::getBiarchSibling
bool getBiarchSibling(Multilib &M) const
Get the biarch sibling multilib (if it exists).
Definition: Gnu.cpp:2138
findMipsMuslMultilibs
static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1183
isArmBigEndian
static bool isArmBigEndian(const llvm::Triple &Triple, const ArgList &Args)
Definition: Gnu.cpp:225
clang::driver::ToolChain::GetCXXStdlibType
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:921
clang::driver::toolchains::Generic_GCC::addLibStdCXXIncludePaths
bool addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple, Twine IncludeSuffix, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, bool DetectDebian=false) const
Definition: Gnu.cpp:3101
IsStatic
bool IsStatic
Definition: Format.cpp:2784
clang::driver::toolchains::Generic_GCC::GCCVersion::Major
int Major
The parsed major, minor, and patch numbers.
Definition: Gnu.h:166
clang::driver::toolchains::Generic_GCC::addLibStdCxxIncludePaths
virtual void addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:3196
clang::driver::toolchains::Generic_GCC::GCCVersion::MinorStr
std::string MinorStr
Definition: Gnu.h:169
clang::driver::toolchains::Generic_ELF::addClangTargetOptions
void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, Action::OffloadKind DeviceOffloadKind) const override
Add options that need to be passed to cc1 for this target.
Definition: Gnu.cpp:3249
clang::driver::tools::gnutools::Assembler::ConstructJob
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: Gnu.cpp:704
clang::driver::tools::addOpenMPRuntime
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool ForceStaticHostRuntime=false, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
clang::driver::InputInfo::getFilename
const char * getFilename() const
Definition: InputInfo.h:83
clang::driver::tools::mips::getMipsCPUAndABI
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
clang::driver::tools::linkSanitizerRuntimeDeps
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
CommonArgs.h
clang
Definition: CalledOnceCheck.h:17
clang::driver::Driver
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:76
clang::driver::toolchains::Generic_GCC::isPICDefaultForced
bool isPICDefaultForced() const override
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
Definition: Gnu.cpp:2888
clang::driver::tools::mips::isUCLibc
bool isUCLibc(const llvm::opt::ArgList &Args)
clang::driver::tools::mips::getMipsFloatABI
mips::FloatABI getMipsFloatABI(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::getMultilib
const Multilib & getMultilib() const
Get the detected Multilib.
Definition: Gnu.h:236
clang::driver::tools::gcc::Compiler
Definition: Gnu.h:115
clang::driver::toolchains::Generic_GCC::AddClangCXXStdlibIncludeArgs
void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: Gnu.cpp:3048
clang::driver::toolchains::Generic_GCC::isPIEDefault
bool isPIEDefault(const llvm::opt::ArgList &Args) const override
Test whether this toolchain defaults to PIE.
Definition: Gnu.cpp:2884
clang::driver::tools::addSanitizerRuntimes
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
clang::driver::tools::addMultilibFlag
void addMultilibFlag(bool Enabled, const char *const Flag, Multilib::flags_list &Flags)
Flag must be a flag accepted by the driver with its leading '-' removed,
Definition: CommonArgs.cpp:1807
clang::driver::ToolChain::Multilibs
MultilibSet Multilibs
Definition: ToolChain.h:189
clang::driver::tools::linkXRayRuntimeDeps
void linkXRayRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
clang::driver::DetectedMultilibs
Definition: Gnu.h:21
clang::driver::Driver::getVFS
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:377
clang::driver::tools::riscv::getRISCVABI
StringRef getRISCVABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
clang::driver::Multilib::includeSuffix
const std::string & includeSuffix() const
Get the include directory suffix.
Definition: Multilib.h:67
clang::driver::toolchains::Generic_GCC::GCCVersion::Patch
int Patch
Definition: Gnu.h:166
clang::driver::tools::mips::shouldUseFPXX
bool shouldUseFPXX(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef CPUName, StringRef ABIName, mips::FloatABI FloatABI)
clang::driver::tools::addLinkerCompressDebugSectionsOption
void addLinkerCompressDebugSectionsOption(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
Definition: CommonArgs.cpp:289
ARM.h
clang::driver::Action::OffloadKind
OffloadKind
Definition: Action.h:86
clang::driver::MultilibSet::Maybe
MultilibSet & Maybe(const Multilib &M)
Add an optional Multilib segment.
Definition: Multilib.cpp:142
clang::driver
Definition: Action.h:31
clang::driver::tools::arm::appendBE8LinkFlag
void appendBE8LinkFlag(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const llvm::Triple &Triple)
llvm::SmallVectorImpl
Definition: Randstruct.h:18
clang::driver::ToolChain::addSystemInclude
static void addSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory to CC1 arguments.
Definition: ToolChain.cpp:947
findMipsCsMultilibs
static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1052
clang::driver::CudaInstallationDetector::print
void print(raw_ostream &OS) const
Print information about the detected CUDA installation.
Definition: Cuda.cpp:319
getPIE
static bool getPIE(const ArgList &Args, const ToolChain &TC)
Definition: Gnu.cpp:316
clang::driver::MultilibSet::select
bool select(const Multilib::flags_list &Flags, Multilib &M) const
Pick the best multilib in the set,.
Definition: Multilib.cpp:244
clang::driver::JobAction
Definition: Action.h:398
clang::driver::Driver::DyldPrefix
std::string DyldPrefix
Dynamic loader prefix, if present.
Definition: Driver.h:185
clang::driver::tools::gcc::Common::ConstructJob
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: Gnu.cpp:66
clang::driver::DetectedMultilibs::Multilibs
MultilibSet Multilibs
The set of multilibs that the detected installation supports.
Definition: Gnu.h:23
clang::CudaVersion::UNKNOWN
@ UNKNOWN
getStaticPIE
static bool getStaticPIE(const ArgList &Args, const ToolChain &TC)
Definition: Gnu.cpp:328
clang::driver::tools::sparc::getSparcAsmModeForCPU
const char * getSparcAsmModeForCPU(llvm::StringRef Name, const llvm::Triple &Triple)
PPC.h
clang::driver::MultilibSet::setIncludeDirsCallback
MultilibSet & setIncludeDirsCallback(IncludeDirsFunc F)
Definition: Multilib.h:174
clang::format::Base
Base
Definition: IntegerLiteralSeparatorFixer.cpp:20
clang::driver::DetectedMultilibs::BiarchSibling
std::optional< Multilib > BiarchSibling
On Biarch systems, this corresponds to the default multilib when targeting the non-default multilib.
Definition: Gnu.h:30
clang::RISCV::Invalid
@ Invalid
Definition: RISCVVIntrinsicUtils.h:213
clang::driver::tools::addFortranRuntimeLibraryPath
void addFortranRuntimeLibraryPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
Adds the path for the Fortran runtime libraries to CmdArgs.
clang::driver::toolchains::Generic_GCC::buildLinker
Tool * buildLinker() const override
Definition: Gnu.cpp:2847
clang::driver::tools::SplitDebugName
const char * SplitDebugName(const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Input, const InputInfo &Output)
normalizeCPUNamesForAssembler
static void normalizeCPUNamesForAssembler(const ArgList &Args, ArgStringList &CmdArgs)
Definition: Gnu.cpp:53
clang::driver::Driver::IsFlangMode
bool IsFlangMode() const
Whether the driver should invoke flang for fortran inputs.
Definition: Driver.h:225
clang::driver::tools::csky::FloatABI::Soft
@ Soft
clang::driver::types::getTypeName
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:52
clang::driver::toolchains::Generic_GCC::GCCInstallationDetector::print
void print(raw_ostream &OS) const
Print information about the detected GCC installation.
Definition: Gnu.cpp:2124
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