clang  10.0.0git
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/Mips.h"
12 #include "Arch/PPC.h"
13 #include "Arch/RISCV.h"
14 #include "Arch/Sparc.h"
15 #include "Arch/SystemZ.h"
16 #include "CommonArgs.h"
17 #include "Linux.h"
18 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
20 #include "clang/Driver/Driver.h"
22 #include "clang/Driver/Options.h"
23 #include "clang/Driver/Tool.h"
24 #include "clang/Driver/ToolChain.h"
25 #include "llvm/Option/ArgList.h"
26 #include "llvm/Support/CodeGen.h"
27 #include "llvm/Support/Path.h"
28 #include "llvm/Support/TargetParser.h"
29 #include "llvm/Support/VirtualFileSystem.h"
30 #include <system_error>
31 
32 using namespace clang::driver;
33 using namespace clang::driver::toolchains;
34 using namespace clang;
35 using namespace llvm::opt;
36 
38 
39 void tools::GnuTool::anchor() {}
40 
41 static bool forwardToGCC(const Option &O) {
42  // Don't forward inputs from the original command line. They are added from
43  // InputInfoList.
44  return O.getKind() != Option::InputClass &&
45  !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput);
46 }
47 
48 // Switch CPU names not recognized by GNU assembler to a close CPU that it does
49 // recognize, instead of a lower march from being picked in the absence of a cpu
50 // flag.
51 static void normalizeCPUNamesForAssembler(const ArgList &Args,
52  ArgStringList &CmdArgs) {
53  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
54  StringRef CPUArg(A->getValue());
55  if (CPUArg.equals_lower("krait"))
56  CmdArgs.push_back("-mcpu=cortex-a15");
57  else if(CPUArg.equals_lower("kryo"))
58  CmdArgs.push_back("-mcpu=cortex-a57");
59  else
60  Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
61  }
62 }
63 
65  const InputInfo &Output,
66  const InputInfoList &Inputs,
67  const ArgList &Args,
68  const char *LinkingOutput) const {
69  const Driver &D = getToolChain().getDriver();
70  ArgStringList CmdArgs;
71 
72  for (const auto &A : Args) {
73  if (forwardToGCC(A->getOption())) {
74  // It is unfortunate that we have to claim here, as this means
75  // we will basically never report anything interesting for
76  // platforms using a generic gcc, even if we are just using gcc
77  // to get to the assembler.
78  A->claim();
79 
80  // Don't forward any -g arguments to assembly steps.
81  if (isa<AssembleJobAction>(JA) &&
82  A->getOption().matches(options::OPT_g_Group))
83  continue;
84 
85  // Don't forward any -W arguments to assembly and link steps.
86  if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
87  A->getOption().matches(options::OPT_W_Group))
88  continue;
89 
90  // Don't forward -mno-unaligned-access since GCC doesn't understand
91  // it and because it doesn't affect the assembly or link steps.
92  if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
93  (A->getOption().matches(options::OPT_munaligned_access) ||
94  A->getOption().matches(options::OPT_mno_unaligned_access)))
95  continue;
96 
97  A->render(Args, CmdArgs);
98  }
99  }
100 
101  RenderExtraToolArgs(JA, CmdArgs);
102 
103  // If using a driver driver, force the arch.
104  if (getToolChain().getTriple().isOSDarwin()) {
105  CmdArgs.push_back("-arch");
106  CmdArgs.push_back(
107  Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
108  }
109 
110  // Try to force gcc to match the tool chain we want, if we recognize
111  // the arch.
112  //
113  // FIXME: The triple class should directly provide the information we want
114  // here.
115  switch (getToolChain().getArch()) {
116  default:
117  break;
118  case llvm::Triple::x86:
119  case llvm::Triple::ppc:
120  CmdArgs.push_back("-m32");
121  break;
122  case llvm::Triple::x86_64:
123  case llvm::Triple::ppc64:
124  case llvm::Triple::ppc64le:
125  CmdArgs.push_back("-m64");
126  break;
127  case llvm::Triple::sparcel:
128  CmdArgs.push_back("-EL");
129  break;
130  }
131 
132  if (Output.isFilename()) {
133  CmdArgs.push_back("-o");
134  CmdArgs.push_back(Output.getFilename());
135  } else {
136  assert(Output.isNothing() && "Unexpected output");
137  CmdArgs.push_back("-fsyntax-only");
138  }
139 
140  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
141 
142  // Only pass -x if gcc will understand it; otherwise hope gcc
143  // understands the suffix correctly. The main use case this would go
144  // wrong in is for linker inputs if they happened to have an odd
145  // suffix; really the only way to get this to happen is a command
146  // like '-x foobar a.c' which will treat a.c like a linker input.
147  //
148  // FIXME: For the linker case specifically, can we safely convert
149  // inputs into '-Wl,' options?
150  for (const auto &II : Inputs) {
151  // Don't try to pass LLVM or AST inputs to a generic gcc.
152  if (types::isLLVMIR(II.getType()))
153  D.Diag(clang::diag::err_drv_no_linker_llvm_support)
154  << getToolChain().getTripleString();
155  else if (II.getType() == types::TY_AST)
156  D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
157  else if (II.getType() == types::TY_ModuleFile)
158  D.Diag(diag::err_drv_no_module_support)
159  << getToolChain().getTripleString();
160 
161  if (types::canTypeBeUserSpecified(II.getType())) {
162  CmdArgs.push_back("-x");
163  CmdArgs.push_back(types::getTypeName(II.getType()));
164  }
165 
166  if (II.isFilename())
167  CmdArgs.push_back(II.getFilename());
168  else {
169  const Arg &A = II.getInputArg();
170 
171  // Reverse translate some rewritten options.
172  if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
173  CmdArgs.push_back("-lstdc++");
174  continue;
175  }
176 
177  // Don't render as input, we need gcc to do the translations.
178  A.render(Args, CmdArgs);
179  }
180  }
181 
182  const std::string &customGCCName = D.getCCCGenericGCCName();
183  const char *GCCName;
184  if (!customGCCName.empty())
185  GCCName = customGCCName.c_str();
186  else if (D.CCCIsCXX()) {
187  GCCName = "g++";
188  } else
189  GCCName = "gcc";
190 
191  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
192  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
193 }
194 
196  const JobAction &JA, ArgStringList &CmdArgs) const {
197  CmdArgs.push_back("-E");
198 }
199 
201  ArgStringList &CmdArgs) const {
202  const Driver &D = getToolChain().getDriver();
203 
204  switch (JA.getType()) {
205  // If -flto, etc. are present then make sure not to force assembly output.
206  case types::TY_LLVM_IR:
207  case types::TY_LTO_IR:
208  case types::TY_LLVM_BC:
209  case types::TY_LTO_BC:
210  CmdArgs.push_back("-c");
211  break;
212  // We assume we've got an "integrated" assembler in that gcc will produce an
213  // object file itself.
214  case types::TY_Object:
215  CmdArgs.push_back("-c");
216  break;
217  case types::TY_PP_Asm:
218  CmdArgs.push_back("-S");
219  break;
220  case types::TY_Nothing:
221  CmdArgs.push_back("-fsyntax-only");
222  break;
223  default:
224  D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
225  }
226 }
227 
229  ArgStringList &CmdArgs) const {
230  // The types are (hopefully) good enough.
231 }
232 
233 // On Arm the endianness of the output file is determined by the target and
234 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and
235 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a
236 // normalized triple so we must handle the flag here.
237 static bool isArmBigEndian(const llvm::Triple &Triple,
238  const ArgList &Args) {
239  bool IsBigEndian = false;
240  switch (Triple.getArch()) {
241  case llvm::Triple::armeb:
242  case llvm::Triple::thumbeb:
243  IsBigEndian = true;
244  LLVM_FALLTHROUGH;
245  case llvm::Triple::arm:
246  case llvm::Triple::thumb:
247  if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
248  options::OPT_mbig_endian))
249  IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
250  break;
251  default:
252  break;
253  }
254  return IsBigEndian;
255 }
256 
257 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
258  switch (T.getArch()) {
259  case llvm::Triple::x86:
260  if (T.isOSIAMCU())
261  return "elf_iamcu";
262  return "elf_i386";
263  case llvm::Triple::aarch64:
264  return "aarch64linux";
265  case llvm::Triple::aarch64_be:
266  return "aarch64linuxb";
267  case llvm::Triple::arm:
268  case llvm::Triple::thumb:
269  case llvm::Triple::armeb:
270  case llvm::Triple::thumbeb:
271  return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi";
272  case llvm::Triple::ppc:
273  return "elf32ppclinux";
274  case llvm::Triple::ppc64:
275  return "elf64ppc";
276  case llvm::Triple::ppc64le:
277  return "elf64lppc";
278  case llvm::Triple::riscv32:
279  return "elf32lriscv";
280  case llvm::Triple::riscv64:
281  return "elf64lriscv";
282  case llvm::Triple::sparc:
283  case llvm::Triple::sparcel:
284  return "elf32_sparc";
285  case llvm::Triple::sparcv9:
286  return "elf64_sparc";
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.getEnvironment() == llvm::Triple::GNUX32)
305  return "elf32_x86_64";
306  return "elf_x86_64";
307  default:
308  return nullptr;
309  }
310 }
311 
312 static bool getPIE(const ArgList &Args, const toolchains::Linux &ToolChain) {
313  if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) ||
314  Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie))
315  return false;
316 
317  Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie,
318  options::OPT_nopie);
319  if (!A)
320  return ToolChain.isPIEDefault();
321  return A->getOption().matches(options::OPT_pie);
322 }
323 
324 static bool getStaticPIE(const ArgList &Args,
325  const toolchains::Linux &ToolChain) {
326  bool HasStaticPIE = Args.hasArg(options::OPT_static_pie);
327  // -no-pie is an alias for -nopie. So, handling -nopie takes care of
328  // -no-pie as well.
329  if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) {
330  const Driver &D = ToolChain.getDriver();
331  const llvm::opt::OptTable &Opts = D.getOpts();
332  const char *StaticPIEName = Opts.getOptionName(options::OPT_static_pie);
333  const char *NoPIEName = Opts.getOptionName(options::OPT_nopie);
334  D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName;
335  }
336  return HasStaticPIE;
337 }
338 
339 static bool getStatic(const ArgList &Args) {
340  return Args.hasArg(options::OPT_static) &&
341  !Args.hasArg(options::OPT_static_pie);
342 }
343 
345  const InputInfo &Output,
346  const InputInfoList &Inputs,
347  const ArgList &Args,
348  const char *LinkingOutput) const {
350  static_cast<const toolchains::Linux &>(getToolChain());
351  const Driver &D = ToolChain.getDriver();
352 
353  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
354 
355  const llvm::Triple::ArchType Arch = ToolChain.getArch();
356  const bool isAndroid = ToolChain.getTriple().isAndroid();
357  const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
358  const bool IsPIE = getPIE(Args, ToolChain);
359  const bool IsStaticPIE = getStaticPIE(Args, ToolChain);
360  const bool IsStatic = getStatic(Args);
361  const bool HasCRTBeginEndFiles =
362  ToolChain.getTriple().hasEnvironment() ||
363  (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
364 
365  ArgStringList CmdArgs;
366 
367  // Silence warning for "clang -g foo.o -o foo"
368  Args.ClaimAllArgs(options::OPT_g_Group);
369  // and "clang -emit-llvm foo.o -o foo"
370  Args.ClaimAllArgs(options::OPT_emit_llvm);
371  // and for "clang -w foo.o -o foo". Other warning options are already
372  // handled somewhere else.
373  Args.ClaimAllArgs(options::OPT_w);
374 
375  if (!D.SysRoot.empty())
376  CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
377 
378  if (IsPIE)
379  CmdArgs.push_back("-pie");
380 
381  if (IsStaticPIE) {
382  CmdArgs.push_back("-static");
383  CmdArgs.push_back("-pie");
384  CmdArgs.push_back("--no-dynamic-linker");
385  CmdArgs.push_back("-z");
386  CmdArgs.push_back("text");
387  }
388 
389  if (ToolChain.isNoExecStackDefault()) {
390  CmdArgs.push_back("-z");
391  CmdArgs.push_back("noexecstack");
392  }
393 
394  if (Args.hasArg(options::OPT_rdynamic))
395  CmdArgs.push_back("-export-dynamic");
396 
397  if (Args.hasArg(options::OPT_s))
398  CmdArgs.push_back("-s");
399 
400  if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) {
401  bool IsBigEndian = isArmBigEndian(Triple, Args);
402  if (IsBigEndian)
403  arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
404  IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be;
405  CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL");
406  }
407 
408  // Most Android ARM64 targets should enable the linker fix for erratum
409  // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
410  if (Arch == llvm::Triple::aarch64 && isAndroid) {
411  std::string CPU = getCPUName(Args, Triple);
412  if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
413  CmdArgs.push_back("--fix-cortex-a53-843419");
414  }
415 
416  // Android does not allow shared text relocations. Emit a warning if the
417  // user's code contains any.
418  if (isAndroid)
419  CmdArgs.push_back("--warn-shared-textrel");
420 
421  for (const auto &Opt : ToolChain.ExtraOpts)
422  CmdArgs.push_back(Opt.c_str());
423 
424  CmdArgs.push_back("--eh-frame-hdr");
425 
426  if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
427  CmdArgs.push_back("-m");
428  CmdArgs.push_back(LDMOption);
429  } else {
430  D.Diag(diag::err_target_unknown_triple) << Triple.str();
431  return;
432  }
433 
434  if (IsStatic) {
435  if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
436  Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb)
437  CmdArgs.push_back("-Bstatic");
438  else
439  CmdArgs.push_back("-static");
440  } else if (Args.hasArg(options::OPT_shared)) {
441  CmdArgs.push_back("-shared");
442  }
443 
444  if (!IsStatic) {
445  if (Args.hasArg(options::OPT_rdynamic))
446  CmdArgs.push_back("-export-dynamic");
447 
448  if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) {
449  const std::string Loader =
450  D.DyldPrefix + ToolChain.getDynamicLinker(Args);
451  CmdArgs.push_back("-dynamic-linker");
452  CmdArgs.push_back(Args.MakeArgString(Loader));
453  }
454  }
455 
456  CmdArgs.push_back("-o");
457  CmdArgs.push_back(Output.getFilename());
458 
459  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
460  if (!isAndroid && !IsIAMCU) {
461  const char *crt1 = nullptr;
462  if (!Args.hasArg(options::OPT_shared)) {
463  if (Args.hasArg(options::OPT_pg))
464  crt1 = "gcrt1.o";
465  else if (IsPIE)
466  crt1 = "Scrt1.o";
467  else if (IsStaticPIE)
468  crt1 = "rcrt1.o";
469  else
470  crt1 = "crt1.o";
471  }
472  if (crt1)
473  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
474 
475  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
476  }
477 
478  if (IsIAMCU)
479  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
480  else if (HasCRTBeginEndFiles) {
481  std::string P;
482  if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
483  !isAndroid) {
484  std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin",
486  if (ToolChain.getVFS().exists(crtbegin))
487  P = crtbegin;
488  }
489  if (P.empty()) {
490  const char *crtbegin;
491  if (IsStatic)
492  crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
493  else if (Args.hasArg(options::OPT_shared))
494  crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
495  else if (IsPIE || IsStaticPIE)
496  crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
497  else
498  crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
499  P = ToolChain.GetFilePath(crtbegin);
500  }
501  CmdArgs.push_back(Args.MakeArgString(P));
502  }
503 
504  // Add crtfastmath.o if available and fast math is enabled.
505  ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
506  }
507 
508  Args.AddAllArgs(CmdArgs, options::OPT_L);
509  Args.AddAllArgs(CmdArgs, options::OPT_u);
510 
511  ToolChain.AddFilePathLibArgs(Args, CmdArgs);
512 
513  if (D.isUsingLTO()) {
514  assert(!Inputs.empty() && "Must have at least one input.");
515  AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
516  D.getLTOMode() == LTOK_Thin);
517  }
518 
519  if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
520  CmdArgs.push_back("--no-demangle");
521 
522  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
523  bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
524  AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
525  // The profile runtime also needs access to system libraries.
526  getToolChain().addProfileRTLibs(Args, CmdArgs);
527 
528  if (D.CCCIsCXX() &&
529  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
530  if (ToolChain.ShouldLinkCXXStdlib(Args)) {
531  bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
532  !Args.hasArg(options::OPT_static);
533  if (OnlyLibstdcxxStatic)
534  CmdArgs.push_back("-Bstatic");
535  ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
536  if (OnlyLibstdcxxStatic)
537  CmdArgs.push_back("-Bdynamic");
538  }
539  CmdArgs.push_back("-lm");
540  }
541  // Silence warnings when linking C code with a C++ '-stdlib' argument.
542  Args.ClaimAllArgs(options::OPT_stdlib_EQ);
543 
544  if (!Args.hasArg(options::OPT_nostdlib)) {
545  if (!Args.hasArg(options::OPT_nodefaultlibs)) {
546  if (IsStatic || IsStaticPIE)
547  CmdArgs.push_back("--start-group");
548 
549  if (NeedsSanitizerDeps)
550  linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
551 
552  if (NeedsXRayDeps)
553  linkXRayRuntimeDeps(ToolChain, CmdArgs);
554 
555  bool WantPthread = Args.hasArg(options::OPT_pthread) ||
556  Args.hasArg(options::OPT_pthreads);
557 
558  // Use the static OpenMP runtime with -static-openmp
559  bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
560  !Args.hasArg(options::OPT_static);
561 
562  // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
563  // require librt. Most modern Linux platforms do, but some may not.
564  if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP,
566  /* GompNeedsRT= */ true))
567  // OpenMP runtimes implies pthreads when using the GNU toolchain.
568  // FIXME: Does this really make sense for all GNU toolchains?
569  WantPthread = true;
570 
571  AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
572 
573  if (WantPthread && !isAndroid)
574  CmdArgs.push_back("-lpthread");
575 
576  if (Args.hasArg(options::OPT_fsplit_stack))
577  CmdArgs.push_back("--wrap=pthread_create");
578 
579  if (!Args.hasArg(options::OPT_nolibc))
580  CmdArgs.push_back("-lc");
581 
582  // Add IAMCU specific libs, if needed.
583  if (IsIAMCU)
584  CmdArgs.push_back("-lgloss");
585 
586  if (IsStatic || IsStaticPIE)
587  CmdArgs.push_back("--end-group");
588  else
589  AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
590 
591  // Add IAMCU specific libs (outside the group), if needed.
592  if (IsIAMCU) {
593  CmdArgs.push_back("--as-needed");
594  CmdArgs.push_back("-lsoftfp");
595  CmdArgs.push_back("--no-as-needed");
596  }
597  }
598 
599  if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
600  if (HasCRTBeginEndFiles) {
601  std::string P;
602  if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
603  !isAndroid) {
604  std::string crtend = ToolChain.getCompilerRT(Args, "crtend",
606  if (ToolChain.getVFS().exists(crtend))
607  P = crtend;
608  }
609  if (P.empty()) {
610  const char *crtend;
611  if (Args.hasArg(options::OPT_shared))
612  crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
613  else if (IsPIE || IsStaticPIE)
614  crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
615  else
616  crtend = isAndroid ? "crtend_android.o" : "crtend.o";
617  P = ToolChain.GetFilePath(crtend);
618  }
619  CmdArgs.push_back(Args.MakeArgString(P));
620  }
621  if (!isAndroid)
622  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
623  }
624  }
625 
626  // Add HIP offloading linker script args if required.
627  AddHIPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA,
628  *this);
629 
630  const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
631  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
632 }
633 
635  const JobAction &JA,
636  const InputInfo &Output,
637  const InputInfoList &Inputs,
638  const ArgList &Args,
639  const char *LinkingOutput) const {
640  const auto &D = getToolChain().getDriver();
641 
642  claimNoWarnArgs(Args);
643 
644  ArgStringList CmdArgs;
645 
646  llvm::Reloc::Model RelocationModel;
647  unsigned PICLevel;
648  bool IsPIE;
649  std::tie(RelocationModel, PICLevel, IsPIE) =
650  ParsePICArgs(getToolChain(), Args);
651 
652  if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
653  if (A->getOption().getID() == options::OPT_gz) {
654  CmdArgs.push_back("--compress-debug-sections");
655  } else {
656  StringRef Value = A->getValue();
657  if (Value == "none" || Value == "zlib" || Value == "zlib-gnu") {
658  CmdArgs.push_back(
659  Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
660  } else {
661  D.Diag(diag::err_drv_unsupported_option_argument)
662  << A->getOption().getName() << Value;
663  }
664  }
665  }
666 
667  if (getToolChain().isNoExecStackDefault()) {
668  CmdArgs.push_back("--noexecstack");
669  }
670 
671  switch (getToolChain().getArch()) {
672  default:
673  break;
674  // Add --32/--64 to make sure we get the format we want.
675  // This is incomplete
676  case llvm::Triple::x86:
677  CmdArgs.push_back("--32");
678  break;
679  case llvm::Triple::x86_64:
680  if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32)
681  CmdArgs.push_back("--x32");
682  else
683  CmdArgs.push_back("--64");
684  break;
685  case llvm::Triple::ppc: {
686  CmdArgs.push_back("-a32");
687  CmdArgs.push_back("-mppc");
688  CmdArgs.push_back(
689  ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
690  break;
691  }
692  case llvm::Triple::ppc64: {
693  CmdArgs.push_back("-a64");
694  CmdArgs.push_back("-mppc64");
695  CmdArgs.push_back(
696  ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
697  break;
698  }
699  case llvm::Triple::ppc64le: {
700  CmdArgs.push_back("-a64");
701  CmdArgs.push_back("-mppc64");
702  CmdArgs.push_back("-mlittle-endian");
703  CmdArgs.push_back(
704  ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
705  break;
706  }
707  case llvm::Triple::riscv32:
708  case llvm::Triple::riscv64: {
709  StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple());
710  CmdArgs.push_back("-mabi");
711  CmdArgs.push_back(ABIName.data());
712  StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple());
713  CmdArgs.push_back("-march");
714  CmdArgs.push_back(MArchName.data());
715  break;
716  }
717  case llvm::Triple::sparc:
718  case llvm::Triple::sparcel: {
719  CmdArgs.push_back("-32");
720  std::string CPU = getCPUName(Args, getToolChain().getTriple());
721  CmdArgs.push_back(
722  sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
723  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
724  break;
725  }
726  case llvm::Triple::sparcv9: {
727  CmdArgs.push_back("-64");
728  std::string CPU = getCPUName(Args, getToolChain().getTriple());
729  CmdArgs.push_back(
730  sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
731  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
732  break;
733  }
734  case llvm::Triple::arm:
735  case llvm::Triple::armeb:
736  case llvm::Triple::thumb:
737  case llvm::Triple::thumbeb: {
738  const llvm::Triple &Triple2 = getToolChain().getTriple();
739  CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL");
740  switch (Triple2.getSubArch()) {
741  case llvm::Triple::ARMSubArch_v7:
742  CmdArgs.push_back("-mfpu=neon");
743  break;
744  case llvm::Triple::ARMSubArch_v8:
745  CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
746  break;
747  default:
748  break;
749  }
750 
751  switch (arm::getARMFloatABI(getToolChain(), Args)) {
752  case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
753  case arm::FloatABI::Soft:
754  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
755  break;
756  case arm::FloatABI::SoftFP:
757  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
758  break;
759  case arm::FloatABI::Hard:
760  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
761  break;
762  }
763 
764  Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
765  normalizeCPUNamesForAssembler(Args, CmdArgs);
766 
767  Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
768  break;
769  }
770  case llvm::Triple::aarch64:
771  case llvm::Triple::aarch64_be: {
772  CmdArgs.push_back(
773  getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
774  Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
775  normalizeCPUNamesForAssembler(Args, CmdArgs);
776 
777  break;
778  }
779  case llvm::Triple::mips:
780  case llvm::Triple::mipsel:
781  case llvm::Triple::mips64:
782  case llvm::Triple::mips64el: {
783  StringRef CPUName;
784  StringRef ABIName;
785  mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
786  ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
787 
788  CmdArgs.push_back("-march");
789  CmdArgs.push_back(CPUName.data());
790 
791  CmdArgs.push_back("-mabi");
792  CmdArgs.push_back(ABIName.data());
793 
794  // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
795  // or -mshared (not implemented) is in effect.
796  if (RelocationModel == llvm::Reloc::Static)
797  CmdArgs.push_back("-mno-shared");
798 
799  // LLVM doesn't support -mplt yet and acts as if it is always given.
800  // However, -mplt has no effect with the N64 ABI.
801  if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
802  CmdArgs.push_back("-call_nonpic");
803 
804  if (getToolChain().getTriple().isLittleEndian())
805  CmdArgs.push_back("-EL");
806  else
807  CmdArgs.push_back("-EB");
808 
809  if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
810  if (StringRef(A->getValue()) == "2008")
811  CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
812  }
813 
814  // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
815  if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
816  options::OPT_mfp64)) {
817  A->claim();
818  A->render(Args, CmdArgs);
819  } else if (mips::shouldUseFPXX(
820  Args, getToolChain().getTriple(), CPUName, ABIName,
821  mips::getMipsFloatABI(getToolChain().getDriver(), Args,
822  getToolChain().getTriple())))
823  CmdArgs.push_back("-mfpxx");
824 
825  // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
826  // -mno-mips16 is actually -no-mips16.
827  if (Arg *A =
828  Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
829  if (A->getOption().matches(options::OPT_mips16)) {
830  A->claim();
831  A->render(Args, CmdArgs);
832  } else {
833  A->claim();
834  CmdArgs.push_back("-no-mips16");
835  }
836  }
837 
838  Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
839  options::OPT_mno_micromips);
840  Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
841  Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
842 
843  if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
844  // Do not use AddLastArg because not all versions of MIPS assembler
845  // support -mmsa / -mno-msa options.
846  if (A->getOption().matches(options::OPT_mmsa))
847  CmdArgs.push_back(Args.MakeArgString("-mmsa"));
848  }
849 
850  Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
851  options::OPT_msoft_float);
852 
853  Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
854  options::OPT_msingle_float);
855 
856  Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
857  options::OPT_mno_odd_spreg);
858 
859  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
860  break;
861  }
862  case llvm::Triple::systemz: {
863  // Always pass an -march option, since our default of z10 is later
864  // than the GNU assembler's default.
865  std::string CPUName = systemz::getSystemZTargetCPU(Args);
866  CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
867  break;
868  }
869  }
870 
871  for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
872  options::OPT_fdebug_prefix_map_EQ)) {
873  StringRef Map = A->getValue();
874  if (Map.find('=') == StringRef::npos)
875  D.Diag(diag::err_drv_invalid_argument_to_option)
876  << Map << A->getOption().getName();
877  else {
878  CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
879  CmdArgs.push_back(Args.MakeArgString(Map));
880  }
881  A->claim();
882  }
883 
884  Args.AddAllArgs(CmdArgs, options::OPT_I);
885  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
886 
887  CmdArgs.push_back("-o");
888  CmdArgs.push_back(Output.getFilename());
889 
890  for (const auto &II : Inputs)
891  CmdArgs.push_back(II.getFilename());
892 
893  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
894  C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
895 
896  // Handle the debug info splitting at object creation time if we're
897  // creating an object.
898  // TODO: Currently only works on linux with newer objcopy.
899  if (Args.hasArg(options::OPT_gsplit_dwarf) &&
900  getToolChain().getTriple().isOSLinux())
901  SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
902  SplitDebugName(Args, Inputs[0], Output));
903 }
904 
905 namespace {
906 // Filter to remove Multilibs that don't exist as a suffix to Path
907 class FilterNonExistent {
908  StringRef Base, File;
909  llvm::vfs::FileSystem &VFS;
910 
911 public:
912  FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
913  : Base(Base), File(File), VFS(VFS) {}
914  bool operator()(const Multilib &M) {
915  return !VFS.exists(Base + M.gccSuffix() + File);
916  }
917 };
918 } // end anonymous namespace
919 
920 static bool isSoftFloatABI(const ArgList &Args) {
921  Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
922  options::OPT_mfloat_abi_EQ);
923  if (!A)
924  return false;
925 
926  return A->getOption().matches(options::OPT_msoft_float) ||
927  (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
928  A->getValue() == StringRef("soft"));
929 }
930 
931 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
932  return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
933 }
934 
935 static bool isMipsEL(llvm::Triple::ArchType Arch) {
936  return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
937 }
938 
939 static bool isMips16(const ArgList &Args) {
940  Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
941  return A && A->getOption().matches(options::OPT_mips16);
942 }
943 
944 static bool isMicroMips(const ArgList &Args) {
945  Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
946  return A && A->getOption().matches(options::OPT_mmicromips);
947 }
948 
949 static bool isMSP430(llvm::Triple::ArchType Arch) {
950  return Arch == llvm::Triple::msp430;
951 }
952 
953 static Multilib makeMultilib(StringRef commonSuffix) {
954  return Multilib(commonSuffix, commonSuffix, commonSuffix);
955 }
956 
957 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
958  FilterNonExistent &NonExistent,
959  DetectedMultilibs &Result) {
960  // Check for Code Sourcery toolchain multilibs
961  MultilibSet CSMipsMultilibs;
962  {
963  auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
964 
965  auto MArchMicroMips =
966  makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
967 
968  auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
969 
970  auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
971 
972  auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
973 
974  auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
975 
976  auto DefaultFloat =
977  makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
978 
979  auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
980 
981  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
982 
983  // Note that this one's osSuffix is ""
984  auto MAbi64 = makeMultilib("")
985  .gccSuffix("/64")
986  .includeSuffix("/64")
987  .flag("+mabi=n64")
988  .flag("-mabi=n32")
989  .flag("-m32");
990 
991  CSMipsMultilibs =
992  MultilibSet()
993  .Either(MArchMips16, MArchMicroMips, MArchDefault)
994  .Maybe(UCLibc)
995  .Either(SoftFloat, Nan2008, DefaultFloat)
996  .FilterOut("/micromips/nan2008")
997  .FilterOut("/mips16/nan2008")
998  .Either(BigEndian, LittleEndian)
999  .Maybe(MAbi64)
1000  .FilterOut("/mips16.*/64")
1001  .FilterOut("/micromips.*/64")
1002  .FilterOut(NonExistent)
1003  .setIncludeDirsCallback([](const Multilib &M) {
1004  std::vector<std::string> Dirs({"/include"});
1005  if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1006  Dirs.push_back(
1007  "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1008  else
1009  Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
1010  return Dirs;
1011  });
1012  }
1013 
1014  MultilibSet DebianMipsMultilibs;
1015  {
1016  Multilib MAbiN32 =
1017  Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
1018 
1019  Multilib M64 = Multilib()
1020  .gccSuffix("/64")
1021  .includeSuffix("/64")
1022  .flag("+m64")
1023  .flag("-m32")
1024  .flag("-mabi=n32");
1025 
1026  Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32");
1027 
1028  DebianMipsMultilibs =
1029  MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
1030  }
1031 
1032  // Sort candidates. Toolchain that best meets the directories tree goes first.
1033  // Then select the first toolchains matches command line flags.
1034  MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1035  if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1036  std::iter_swap(Candidates, Candidates + 1);
1037  for (const MultilibSet *Candidate : Candidates) {
1038  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1039  if (Candidate == &DebianMipsMultilibs)
1040  Result.BiarchSibling = Multilib();
1041  Result.Multilibs = *Candidate;
1042  return true;
1043  }
1044  }
1045  return false;
1046 }
1047 
1048 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path,
1049  const Multilib::flags_list &Flags,
1050  FilterNonExistent &NonExistent,
1051  DetectedMultilibs &Result) {
1052 
1053  MultilibSet AndroidMipsMultilibs =
1054  MultilibSet()
1055  .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
1056  .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
1057  .FilterOut(NonExistent);
1058 
1059  MultilibSet AndroidMipselMultilibs =
1060  MultilibSet()
1061  .Either(Multilib().flag("+march=mips32"),
1062  Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1063  Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1064  .FilterOut(NonExistent);
1065 
1066  MultilibSet AndroidMips64elMultilibs =
1067  MultilibSet()
1068  .Either(
1069  Multilib().flag("+march=mips64r6"),
1070  Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
1071  Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1072  Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1073  .FilterOut(NonExistent);
1074 
1075  MultilibSet *MS = &AndroidMipsMultilibs;
1076  if (VFS.exists(Path + "/mips-r6"))
1077  MS = &AndroidMipselMultilibs;
1078  else if (VFS.exists(Path + "/32"))
1079  MS = &AndroidMips64elMultilibs;
1080  if (MS->select(Flags, Result.SelectedMultilib)) {
1081  Result.Multilibs = *MS;
1082  return true;
1083  }
1084  return false;
1085 }
1086 
1088  FilterNonExistent &NonExistent,
1089  DetectedMultilibs &Result) {
1090  // Musl toolchain multilibs
1091  MultilibSet MuslMipsMultilibs;
1092  {
1093  auto MArchMipsR2 = makeMultilib("")
1094  .osSuffix("/mips-r2-hard-musl")
1095  .flag("+EB")
1096  .flag("-EL")
1097  .flag("+march=mips32r2");
1098 
1099  auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1100  .flag("-EB")
1101  .flag("+EL")
1102  .flag("+march=mips32r2");
1103 
1104  MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1105 
1106  // Specify the callback that computes the include directories.
1107  MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1108  return std::vector<std::string>(
1109  {"/../sysroot" + M.osSuffix() + "/usr/include"});
1110  });
1111  }
1112  if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1113  Result.Multilibs = MuslMipsMultilibs;
1114  return true;
1115  }
1116  return false;
1117 }
1118 
1120  FilterNonExistent &NonExistent,
1121  DetectedMultilibs &Result) {
1122  // CodeScape MTI toolchain v1.2 and early.
1123  MultilibSet MtiMipsMultilibsV1;
1124  {
1125  auto MArchMips32 = makeMultilib("/mips32")
1126  .flag("+m32")
1127  .flag("-m64")
1128  .flag("-mmicromips")
1129  .flag("+march=mips32");
1130 
1131  auto MArchMicroMips = makeMultilib("/micromips")
1132  .flag("+m32")
1133  .flag("-m64")
1134  .flag("+mmicromips");
1135 
1136  auto MArchMips64r2 = makeMultilib("/mips64r2")
1137  .flag("-m32")
1138  .flag("+m64")
1139  .flag("+march=mips64r2");
1140 
1141  auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1142  "-march=mips64r2");
1143 
1144  auto MArchDefault = makeMultilib("")
1145  .flag("+m32")
1146  .flag("-m64")
1147  .flag("-mmicromips")
1148  .flag("+march=mips32r2");
1149 
1150  auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1151 
1152  auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1153 
1154  auto MAbi64 =
1155  makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1156 
1157  auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1158 
1159  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1160 
1161  auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1162 
1163  auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1164 
1165  MtiMipsMultilibsV1 =
1166  MultilibSet()
1167  .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1168  MArchDefault)
1169  .Maybe(UCLibc)
1170  .Maybe(Mips16)
1171  .FilterOut("/mips64/mips16")
1172  .FilterOut("/mips64r2/mips16")
1173  .FilterOut("/micromips/mips16")
1174  .Maybe(MAbi64)
1175  .FilterOut("/micromips/64")
1176  .FilterOut("/mips32/64")
1177  .FilterOut("^/64")
1178  .FilterOut("/mips16/64")
1179  .Either(BigEndian, LittleEndian)
1180  .Maybe(SoftFloat)
1181  .Maybe(Nan2008)
1182  .FilterOut(".*sof/nan2008")
1183  .FilterOut(NonExistent)
1184  .setIncludeDirsCallback([](const Multilib &M) {
1185  std::vector<std::string> Dirs({"/include"});
1186  if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1187  Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1188  else
1189  Dirs.push_back("/../../../../sysroot/usr/include");
1190  return Dirs;
1191  });
1192  }
1193 
1194  // CodeScape IMG toolchain starting from v1.3.
1195  MultilibSet MtiMipsMultilibsV2;
1196  {
1197  auto BeHard = makeMultilib("/mips-r2-hard")
1198  .flag("+EB")
1199  .flag("-msoft-float")
1200  .flag("-mnan=2008")
1201  .flag("-muclibc");
1202  auto BeSoft = makeMultilib("/mips-r2-soft")
1203  .flag("+EB")
1204  .flag("+msoft-float")
1205  .flag("-mnan=2008");
1206  auto ElHard = makeMultilib("/mipsel-r2-hard")
1207  .flag("+EL")
1208  .flag("-msoft-float")
1209  .flag("-mnan=2008")
1210  .flag("-muclibc");
1211  auto ElSoft = makeMultilib("/mipsel-r2-soft")
1212  .flag("+EL")
1213  .flag("+msoft-float")
1214  .flag("-mnan=2008")
1215  .flag("-mmicromips");
1216  auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1217  .flag("+EB")
1218  .flag("-msoft-float")
1219  .flag("+mnan=2008")
1220  .flag("-muclibc");
1221  auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1222  .flag("+EL")
1223  .flag("-msoft-float")
1224  .flag("+mnan=2008")
1225  .flag("-muclibc")
1226  .flag("-mmicromips");
1227  auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1228  .flag("+EB")
1229  .flag("-msoft-float")
1230  .flag("+mnan=2008")
1231  .flag("+muclibc");
1232  auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1233  .flag("+EL")
1234  .flag("-msoft-float")
1235  .flag("+mnan=2008")
1236  .flag("+muclibc");
1237  auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1238  .flag("+EB")
1239  .flag("-msoft-float")
1240  .flag("-mnan=2008")
1241  .flag("+muclibc");
1242  auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1243  .flag("+EL")
1244  .flag("-msoft-float")
1245  .flag("-mnan=2008")
1246  .flag("+muclibc");
1247  auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1248  .flag("+EL")
1249  .flag("-msoft-float")
1250  .flag("+mnan=2008")
1251  .flag("+mmicromips");
1252  auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1253  .flag("+EL")
1254  .flag("+msoft-float")
1255  .flag("-mnan=2008")
1256  .flag("+mmicromips");
1257 
1258  auto O32 =
1259  makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1260  auto N32 =
1261  makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1262  auto N64 =
1263  makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1264 
1265  MtiMipsMultilibsV2 =
1266  MultilibSet()
1267  .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1268  BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1269  ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1270  .Either(O32, N32, N64)
1271  .FilterOut(NonExistent)
1272  .setIncludeDirsCallback([](const Multilib &M) {
1273  return std::vector<std::string>({"/../../../../sysroot" +
1274  M.includeSuffix() +
1275  "/../usr/include"});
1276  })
1277  .setFilePathsCallback([](const Multilib &M) {
1278  return std::vector<std::string>(
1279  {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1280  });
1281  }
1282  for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1283  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1284  Result.Multilibs = *Candidate;
1285  return true;
1286  }
1287  }
1288  return false;
1289 }
1290 
1292  FilterNonExistent &NonExistent,
1293  DetectedMultilibs &Result) {
1294  // CodeScape IMG toolchain v1.2 and early.
1295  MultilibSet ImgMultilibsV1;
1296  {
1297  auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1298 
1299  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1300 
1301  auto MAbi64 =
1302  makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1303 
1304  ImgMultilibsV1 =
1305  MultilibSet()
1306  .Maybe(Mips64r6)
1307  .Maybe(MAbi64)
1308  .Maybe(LittleEndian)
1309  .FilterOut(NonExistent)
1310  .setIncludeDirsCallback([](const Multilib &M) {
1311  return std::vector<std::string>(
1312  {"/include", "/../../../../sysroot/usr/include"});
1313  });
1314  }
1315 
1316  // CodeScape IMG toolchain starting from v1.3.
1317  MultilibSet ImgMultilibsV2;
1318  {
1319  auto BeHard = makeMultilib("/mips-r6-hard")
1320  .flag("+EB")
1321  .flag("-msoft-float")
1322  .flag("-mmicromips");
1323  auto BeSoft = makeMultilib("/mips-r6-soft")
1324  .flag("+EB")
1325  .flag("+msoft-float")
1326  .flag("-mmicromips");
1327  auto ElHard = makeMultilib("/mipsel-r6-hard")
1328  .flag("+EL")
1329  .flag("-msoft-float")
1330  .flag("-mmicromips");
1331  auto ElSoft = makeMultilib("/mipsel-r6-soft")
1332  .flag("+EL")
1333  .flag("+msoft-float")
1334  .flag("-mmicromips");
1335  auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1336  .flag("+EB")
1337  .flag("-msoft-float")
1338  .flag("+mmicromips");
1339  auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1340  .flag("+EB")
1341  .flag("+msoft-float")
1342  .flag("+mmicromips");
1343  auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1344  .flag("+EL")
1345  .flag("-msoft-float")
1346  .flag("+mmicromips");
1347  auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1348  .flag("+EL")
1349  .flag("+msoft-float")
1350  .flag("+mmicromips");
1351 
1352  auto O32 =
1353  makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1354  auto N32 =
1355  makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1356  auto N64 =
1357  makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1358 
1359  ImgMultilibsV2 =
1360  MultilibSet()
1361  .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1362  ElMicroHard, ElMicroSoft})
1363  .Either(O32, N32, N64)
1364  .FilterOut(NonExistent)
1365  .setIncludeDirsCallback([](const Multilib &M) {
1366  return std::vector<std::string>({"/../../../../sysroot" +
1367  M.includeSuffix() +
1368  "/../usr/include"});
1369  })
1370  .setFilePathsCallback([](const Multilib &M) {
1371  return std::vector<std::string>(
1372  {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1373  });
1374  }
1375  for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1376  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1377  Result.Multilibs = *Candidate;
1378  return true;
1379  }
1380  }
1381  return false;
1382 }
1383 
1385  const llvm::Triple &TargetTriple,
1386  StringRef Path, const ArgList &Args,
1387  DetectedMultilibs &Result) {
1388  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1389 
1390  StringRef CPUName;
1391  StringRef ABIName;
1392  tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1393 
1394  llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1395 
1396  Multilib::flags_list Flags;
1397  addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags);
1398  addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags);
1399  addMultilibFlag(isMips16(Args), "mips16", Flags);
1400  addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1401  addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1402  CPUName == "mips32r5" || CPUName == "p5600",
1403  "march=mips32r2", Flags);
1404  addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1405  addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1406  addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1407  CPUName == "mips64r5" || CPUName == "octeon" ||
1408  CPUName == "octeon+",
1409  "march=mips64r2", Flags);
1410  addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1411  addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1412  addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1413  addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008",
1414  Flags);
1415  addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1416  addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1417  addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1418  addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1419  addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1420  addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1421 
1422  if (TargetTriple.isAndroid())
1423  return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1424  Result);
1425 
1426  if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1427  TargetTriple.getOS() == llvm::Triple::Linux &&
1428  TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1429  return findMipsMuslMultilibs(Flags, NonExistent, Result);
1430 
1431  if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1432  TargetTriple.getOS() == llvm::Triple::Linux &&
1433  TargetTriple.isGNUEnvironment())
1434  return findMipsMtiMultilibs(Flags, NonExistent, Result);
1435 
1436  if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1437  TargetTriple.getOS() == llvm::Triple::Linux &&
1438  TargetTriple.isGNUEnvironment())
1439  return findMipsImgMultilibs(Flags, NonExistent, Result);
1440 
1441  if (findMipsCsMultilibs(Flags, NonExistent, Result))
1442  return true;
1443 
1444  // Fallback to the regular toolchain-tree structure.
1445  Multilib Default;
1446  Result.Multilibs.push_back(Default);
1447  Result.Multilibs.FilterOut(NonExistent);
1448 
1449  if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1450  Result.BiarchSibling = Multilib();
1451  return true;
1452  }
1453 
1454  return false;
1455 }
1456 
1457 static void findAndroidArmMultilibs(const Driver &D,
1458  const llvm::Triple &TargetTriple,
1459  StringRef Path, const ArgList &Args,
1460  DetectedMultilibs &Result) {
1461  // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1462  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1463  Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1464  .flag("+march=armv7-a")
1465  .flag("-mthumb");
1466  Multilib ThumbMultilib = makeMultilib("/thumb")
1467  .flag("-march=armv7-a")
1468  .flag("+mthumb");
1469  Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1470  .flag("+march=armv7-a")
1471  .flag("+mthumb");
1472  Multilib DefaultMultilib = makeMultilib("")
1473  .flag("-march=armv7-a")
1474  .flag("-mthumb");
1475  MultilibSet AndroidArmMultilibs =
1476  MultilibSet()
1477  .Either(ThumbMultilib, ArmV7Multilib,
1478  ArmV7ThumbMultilib, DefaultMultilib)
1479  .FilterOut(NonExistent);
1480 
1481  Multilib::flags_list Flags;
1482  llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1483  bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1484  bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1485  bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1486  bool IsThumbMode = IsThumbArch ||
1487  Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1488  (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1489  bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1490  (llvm::ARM::parseArchVersion(Arch) == 7 ||
1491  (IsArmArch && Arch == "" && IsV7SubArch));
1492  addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags);
1493  addMultilibFlag(IsThumbMode, "mthumb", Flags);
1494 
1495  if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1496  Result.Multilibs = AndroidArmMultilibs;
1497 }
1498 
1499 static bool findMSP430Multilibs(const Driver &D,
1500  const llvm::Triple &TargetTriple,
1501  StringRef Path, const ArgList &Args,
1502  DetectedMultilibs &Result) {
1503  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1504  Multilib MSP430Multilib = makeMultilib("/430");
1505  // FIXME: when clang starts to support msp430x ISA additional logic
1506  // to select between multilib must be implemented
1507  // Multilib MSP430xMultilib = makeMultilib("/large");
1508 
1509  Result.Multilibs.push_back(MSP430Multilib);
1510  Result.Multilibs.FilterOut(NonExistent);
1511 
1512  Multilib::flags_list Flags;
1513  if (Result.Multilibs.select(Flags, Result.SelectedMultilib))
1514  return true;
1515 
1516  return false;
1517 }
1518 
1520  const llvm::Triple &TargetTriple,
1521  StringRef Path, const ArgList &Args,
1522  DetectedMultilibs &Result) {
1523  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1524  struct RiscvMultilib {
1525  StringRef march;
1526  StringRef mabi;
1527  };
1528  // currently only support the set of multilibs like riscv-gnu-toolchain does.
1529  // TODO: support MULTILIB_REUSE
1530  SmallVector<RiscvMultilib, 8> RISCVMultilibSet = {
1531  {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"},
1532  {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"},
1533  {"rv64imafdc", "lp64d"}};
1534 
1535  std::vector<Multilib> Ms;
1536  for (auto Element : RISCVMultilibSet) {
1537  // multilib path rule is ${march}/${mabi}
1538  Ms.emplace_back(
1539  makeMultilib((Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1540  .flag(Twine("+march=", Element.march).str())
1541  .flag(Twine("+mabi=", Element.mabi).str()));
1542  }
1543  MultilibSet RISCVMultilibs =
1544  MultilibSet()
1546  .FilterOut(NonExistent)
1547  .setFilePathsCallback([](const Multilib &M) {
1548  return std::vector<std::string>(
1549  {M.gccSuffix(),
1550  "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(),
1551  "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()});
1552  });
1553 
1554 
1555  Multilib::flags_list Flags;
1556  llvm::StringSet<> Added_ABIs;
1557  StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1558  StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple);
1559  for (auto Element : RISCVMultilibSet) {
1560  addMultilibFlag(MArch == Element.march,
1561  Twine("march=", Element.march).str().c_str(), Flags);
1562  if (!Added_ABIs.count(Element.mabi)) {
1563  Added_ABIs.insert(Element.mabi);
1564  addMultilibFlag(ABIName == Element.mabi,
1565  Twine("mabi=", Element.mabi).str().c_str(), Flags);
1566  }
1567  }
1568 
1569  if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1570  Result.Multilibs = RISCVMultilibs;
1571 }
1572 
1573 static void findRISCVMultilibs(const Driver &D,
1574  const llvm::Triple &TargetTriple, StringRef Path,
1575  const ArgList &Args, DetectedMultilibs &Result) {
1576  if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1577  return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1578 
1579  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1580  Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32");
1581  Multilib Ilp32f =
1582  makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f");
1583  Multilib Ilp32d =
1584  makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d");
1585  Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64");
1586  Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f");
1587  Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d");
1588  MultilibSet RISCVMultilibs =
1589  MultilibSet()
1590  .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1591  .FilterOut(NonExistent);
1592 
1593  Multilib::flags_list Flags;
1594  bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1595  StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1596 
1597  addMultilibFlag(!IsRV64, "m32", Flags);
1598  addMultilibFlag(IsRV64, "m64", Flags);
1599  addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags);
1600  addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags);
1601  addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags);
1602  addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags);
1603  addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags);
1604  addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags);
1605 
1606  if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1607  Result.Multilibs = RISCVMultilibs;
1608 }
1609 
1610 static bool findBiarchMultilibs(const Driver &D,
1611  const llvm::Triple &TargetTriple,
1612  StringRef Path, const ArgList &Args,
1613  bool NeedsBiarchSuffix,
1614  DetectedMultilibs &Result) {
1615  Multilib Default;
1616 
1617  // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1618  // in what would normally be GCCInstallPath and put the 64-bit
1619  // libs in a subdirectory named 64. The simple logic we follow is that
1620  // *if* there is a subdirectory of the right name with crtbegin.o in it,
1621  // we use that. If not, and if not a biarch triple alias, we look for
1622  // crtbegin.o without the subdirectory.
1623 
1624  StringRef Suff64 = "/64";
1625  // Solaris uses platform-specific suffixes instead of /64.
1626  if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1627  switch (TargetTriple.getArch()) {
1628  case llvm::Triple::x86:
1629  case llvm::Triple::x86_64:
1630  Suff64 = "/amd64";
1631  break;
1632  case llvm::Triple::sparc:
1633  case llvm::Triple::sparcv9:
1634  Suff64 = "/sparcv9";
1635  break;
1636  default:
1637  break;
1638  }
1639  }
1640 
1641  Multilib Alt64 = Multilib()
1642  .gccSuffix(Suff64)
1643  .includeSuffix(Suff64)
1644  .flag("-m32")
1645  .flag("+m64")
1646  .flag("-mx32");
1647  Multilib Alt32 = Multilib()
1648  .gccSuffix("/32")
1649  .includeSuffix("/32")
1650  .flag("+m32")
1651  .flag("-m64")
1652  .flag("-mx32");
1653  Multilib Altx32 = Multilib()
1654  .gccSuffix("/x32")
1655  .includeSuffix("/x32")
1656  .flag("-m32")
1657  .flag("-m64")
1658  .flag("+mx32");
1659 
1660  // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1661  FilterNonExistent NonExistent(
1662  Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1663 
1664  // Determine default multilib from: 32, 64, x32
1665  // Also handle cases such as 64 on 32, 32 on 64, etc.
1666  enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1667  const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32;
1668  if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1669  Want = WANT64;
1670  else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1671  Want = WANT64;
1672  else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1673  Want = WANT32;
1674  else {
1675  if (TargetTriple.isArch32Bit())
1676  Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1677  else if (IsX32)
1678  Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1679  else
1680  Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1681  }
1682 
1683  if (Want == WANT32)
1684  Default.flag("+m32").flag("-m64").flag("-mx32");
1685  else if (Want == WANT64)
1686  Default.flag("-m32").flag("+m64").flag("-mx32");
1687  else if (Want == WANTX32)
1688  Default.flag("-m32").flag("-m64").flag("+mx32");
1689  else
1690  return false;
1691 
1692  Result.Multilibs.push_back(Default);
1693  Result.Multilibs.push_back(Alt64);
1694  Result.Multilibs.push_back(Alt32);
1695  Result.Multilibs.push_back(Altx32);
1696 
1697  Result.Multilibs.FilterOut(NonExistent);
1698 
1699  Multilib::flags_list Flags;
1700  addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1701  addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1702  addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1703 
1704  if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1705  return false;
1706 
1707  if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1708  Result.SelectedMultilib == Altx32)
1709  Result.BiarchSibling = Default;
1710 
1711  return true;
1712 }
1713 
1714 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1715 /// all subcommands; this relies on gcc translating the majority of
1716 /// command line options.
1717 
1718 /// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1719 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1720  int RHSPatch,
1721  StringRef RHSPatchSuffix) const {
1722  if (Major != RHSMajor)
1723  return Major < RHSMajor;
1724  if (Minor != RHSMinor)
1725  return Minor < RHSMinor;
1726  if (Patch != RHSPatch) {
1727  // Note that versions without a specified patch sort higher than those with
1728  // a patch.
1729  if (RHSPatch == -1)
1730  return true;
1731  if (Patch == -1)
1732  return false;
1733 
1734  // Otherwise just sort on the patch itself.
1735  return Patch < RHSPatch;
1736  }
1737  if (PatchSuffix != RHSPatchSuffix) {
1738  // Sort empty suffixes higher.
1739  if (RHSPatchSuffix.empty())
1740  return true;
1741  if (PatchSuffix.empty())
1742  return false;
1743 
1744  // Provide a lexicographic sort to make this a total ordering.
1745  return PatchSuffix < RHSPatchSuffix;
1746  }
1747 
1748  // The versions are equal.
1749  return false;
1750 }
1751 
1752 /// Parse a GCCVersion object out of a string of text.
1753 ///
1754 /// This is the primary means of forming GCCVersion objects.
1755 /*static*/
1757  const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1758  std::pair<StringRef, StringRef> First = VersionText.split('.');
1759  std::pair<StringRef, StringRef> Second = First.second.split('.');
1760 
1761  GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1762  if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
1763  return BadVersion;
1764  GoodVersion.MajorStr = First.first.str();
1765  if (First.second.empty())
1766  return GoodVersion;
1767  StringRef MinorStr = Second.first;
1768  if (Second.second.empty()) {
1769  if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) {
1770  GoodVersion.PatchSuffix = MinorStr.substr(EndNumber);
1771  MinorStr = MinorStr.slice(0, EndNumber);
1772  }
1773  }
1774  if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
1775  return BadVersion;
1776  GoodVersion.MinorStr = MinorStr.str();
1777 
1778  // First look for a number prefix and parse that if present. Otherwise just
1779  // stash the entire patch string in the suffix, and leave the number
1780  // unspecified. This covers versions strings such as:
1781  // 5 (handled above)
1782  // 4.4
1783  // 4.4-patched
1784  // 4.4.0
1785  // 4.4.x
1786  // 4.4.2-rc4
1787  // 4.4.x-patched
1788  // And retains any patch number it finds.
1789  StringRef PatchText = Second.second;
1790  if (!PatchText.empty()) {
1791  if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
1792  // Try to parse the number and any suffix.
1793  if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
1794  GoodVersion.Patch < 0)
1795  return BadVersion;
1796  GoodVersion.PatchSuffix = PatchText.substr(EndNumber);
1797  }
1798  }
1799 
1800  return GoodVersion;
1801 }
1802 
1803 static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
1804  llvm::StringRef SysRoot) {
1805  const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1806  if (A)
1807  return A->getValue();
1808 
1809  // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
1810  // GCC_INSTALL_PREFIX specifies the gcc installation for the default
1811  // sysroot and is likely not valid with a different sysroot.
1812  if (!SysRoot.empty())
1813  return "";
1814 
1815  return GCC_INSTALL_PREFIX;
1816 }
1817 
1818 /// Initialize a GCCInstallationDetector from the driver.
1819 ///
1820 /// This performs all of the autodetection and sets up the various paths.
1821 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1822 ///
1823 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1824 /// should instead pull the target out of the driver. This is currently
1825 /// necessary because the driver doesn't store the final version of the target
1826 /// triple.
1828  const llvm::Triple &TargetTriple, const ArgList &Args,
1829  ArrayRef<std::string> ExtraTripleAliases) {
1830  llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
1831  ? TargetTriple.get64BitArchVariant()
1832  : TargetTriple.get32BitArchVariant();
1833  // The library directories which may contain GCC installations.
1834  SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
1835  // The compatible GCC triples for this particular architecture.
1836  SmallVector<StringRef, 16> CandidateTripleAliases;
1837  SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
1838  CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
1839  CandidateTripleAliases, CandidateBiarchLibDirs,
1840  CandidateBiarchTripleAliases);
1841 
1842  // Compute the set of prefixes for our search.
1843  SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
1844  D.PrefixDirs.end());
1845 
1846  StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot);
1847  if (GCCToolchainDir != "") {
1848  if (GCCToolchainDir.back() == '/')
1849  GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
1850 
1851  Prefixes.push_back(GCCToolchainDir);
1852  } else {
1853  // If we have a SysRoot, try that first.
1854  if (!D.SysRoot.empty()) {
1855  Prefixes.push_back(D.SysRoot);
1856  AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
1857  }
1858 
1859  // Then look for gcc installed alongside clang.
1860  Prefixes.push_back(D.InstalledDir + "/..");
1861 
1862  // Next, look for prefix(es) that correspond to distribution-supplied gcc
1863  // installations.
1864  if (D.SysRoot.empty()) {
1865  // Typically /usr.
1866  AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
1867  }
1868  }
1869 
1870  // Try to respect gcc-config on Gentoo. However, do that only
1871  // if --gcc-toolchain is not provided or equal to the Gentoo install
1872  // in /usr. This avoids accidentally enforcing the system GCC version
1873  // when using a custom toolchain.
1874  if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") {
1875  SmallVector<StringRef, 16> GentooTestTriples;
1876  // Try to match an exact triple as target triple first.
1877  // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
1878  // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
1879  // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
1880  // triple x86_64-gentoo-linux-gnu is present.
1881  GentooTestTriples.push_back(TargetTriple.str());
1882  // Check rest of triples.
1883  GentooTestTriples.append(ExtraTripleAliases.begin(),
1884  ExtraTripleAliases.end());
1885  GentooTestTriples.append(CandidateTripleAliases.begin(),
1886  CandidateTripleAliases.end());
1887  if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples,
1888  CandidateBiarchTripleAliases))
1889  return;
1890  }
1891 
1892  // Loop over the various components which exist and select the best GCC
1893  // installation available. GCC installs are ranked by version number.
1894  Version = GCCVersion::Parse("0.0.0");
1895  for (const std::string &Prefix : Prefixes) {
1896  if (!D.getVFS().exists(Prefix))
1897  continue;
1898  for (StringRef Suffix : CandidateLibDirs) {
1899  const std::string LibDir = Prefix + Suffix.str();
1900  if (!D.getVFS().exists(LibDir))
1901  continue;
1902  // Try to match the exact target triple first.
1903  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str());
1904  // Try rest of possible triples.
1905  for (StringRef Candidate : ExtraTripleAliases) // Try these first.
1906  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1907  for (StringRef Candidate : CandidateTripleAliases)
1908  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1909  }
1910  for (StringRef Suffix : CandidateBiarchLibDirs) {
1911  const std::string LibDir = Prefix + Suffix.str();
1912  if (!D.getVFS().exists(LibDir))
1913  continue;
1914  for (StringRef Candidate : CandidateBiarchTripleAliases)
1915  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate,
1916  /*NeedsBiarchSuffix=*/ true);
1917  }
1918  }
1919 }
1920 
1921 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
1922  for (const auto &InstallPath : CandidateGCCInstallPaths)
1923  OS << "Found candidate GCC installation: " << InstallPath << "\n";
1924 
1925  if (!GCCInstallPath.empty())
1926  OS << "Selected GCC installation: " << GCCInstallPath << "\n";
1927 
1928  for (const auto &Multilib : Multilibs)
1929  OS << "Candidate multilib: " << Multilib << "\n";
1930 
1931  if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
1932  OS << "Selected multilib: " << SelectedMultilib << "\n";
1933 }
1934 
1936  if (BiarchSibling.hasValue()) {
1937  M = BiarchSibling.getValue();
1938  return true;
1939  }
1940  return false;
1941 }
1942 
1943 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
1944  const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
1945  StringRef SysRoot) {
1946  if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1947  // Solaris is a special case.
1948  // The GCC installation is under
1949  // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
1950  // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
1951  // /usr/gcc/<version> as a prefix.
1952 
1953  std::string PrefixDir = SysRoot.str() + "/usr/gcc";
1954  std::error_code EC;
1955  for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC),
1956  LE;
1957  !EC && LI != LE; LI = LI.increment(EC)) {
1958  StringRef VersionText = llvm::sys::path::filename(LI->path());
1959  GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
1960 
1961  // Filter out obviously bad entries.
1962  if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1))
1963  continue;
1964 
1965  std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
1966  std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
1967  if (!D.getVFS().exists(CandidateLibPath))
1968  continue;
1969 
1970  Prefixes.push_back(CandidatePrefix);
1971  }
1972  return;
1973  }
1974 
1975  // Non-Solaris is much simpler - most systems just go with "/usr".
1976  if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux) {
1977  // Yet, still look for RHEL devtoolsets.
1978  Prefixes.push_back("/opt/rh/devtoolset-8/root/usr");
1979  Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
1980  Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
1981  Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
1982  Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
1983  Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
1984  }
1985  Prefixes.push_back(SysRoot.str() + "/usr");
1986 }
1987 
1988 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
1989  const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
1990  SmallVectorImpl<StringRef> &LibDirs,
1991  SmallVectorImpl<StringRef> &TripleAliases,
1992  SmallVectorImpl<StringRef> &BiarchLibDirs,
1993  SmallVectorImpl<StringRef> &BiarchTripleAliases) {
1994  // Declare a bunch of static data sets that we'll select between below. These
1995  // are specifically designed to always refer to string literals to avoid any
1996  // lifetime or initialization issues.
1997  static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
1998  static const char *const AArch64Triples[] = {
1999  "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux",
2000  "aarch64-suse-linux", "aarch64-linux-android"};
2001  static const char *const AArch64beLibDirs[] = {"/lib"};
2002  static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
2003  "aarch64_be-linux-gnu"};
2004 
2005  static const char *const ARMLibDirs[] = {"/lib"};
2006  static const char *const ARMTriples[] = {"arm-linux-gnueabi",
2007  "arm-linux-androideabi"};
2008  static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2009  "armv7hl-redhat-linux-gnueabi",
2010  "armv6hl-suse-linux-gnueabi",
2011  "armv7hl-suse-linux-gnueabi"};
2012  static const char *const ARMebLibDirs[] = {"/lib"};
2013  static const char *const ARMebTriples[] = {"armeb-linux-gnueabi",
2014  "armeb-linux-androideabi"};
2015  static const char *const ARMebHFTriples[] = {
2016  "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2017 
2018  static const char *const AVRLibDirs[] = {"/lib"};
2019  static const char *const AVRTriples[] = {"avr"};
2020 
2021  static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2022  static const char *const X86_64Triples[] = {
2023  "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2024  "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2025  "x86_64-redhat-linux", "x86_64-suse-linux",
2026  "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
2027  "x86_64-slackware-linux", "x86_64-unknown-linux",
2028  "x86_64-amazon-linux", "x86_64-linux-android"};
2029  static const char *const X32LibDirs[] = {"/libx32"};
2030  static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2031  static const char *const X86Triples[] = {
2032  "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu",
2033  "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux",
2034  "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux",
2035  "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu",
2036  "i686-linux-android", "i386-gnu", "i486-gnu",
2037  "i586-gnu", "i686-gnu"};
2038 
2039  static const char *const MIPSLibDirs[] = {"/lib"};
2040  static const char *const MIPSTriples[] = {
2041  "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2042  "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2043  static const char *const MIPSELLibDirs[] = {"/lib"};
2044  static const char *const MIPSELTriples[] = {
2045  "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu",
2046  "mipsel-linux-android"};
2047 
2048  static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2049  static const char *const MIPS64Triples[] = {
2050  "mips64-linux-gnu", "mips-mti-linux-gnu",
2051  "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2052  "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2053  static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2054  static const char *const MIPS64ELTriples[] = {
2055  "mips64el-linux-gnu", "mips-mti-linux-gnu",
2056  "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2057  "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64",
2058  "mips64el-linux-android"};
2059 
2060  static const char *const MIPSN32LibDirs[] = {"/lib32"};
2061  static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2062  "mipsisa64r6-linux-gnuabin32"};
2063  static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2064  static const char *const MIPSN32ELTriples[] = {
2065  "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2066 
2067  static const char *const MSP430LibDirs[] = {"/lib"};
2068  static const char *const MSP430Triples[] = {"msp430-elf"};
2069 
2070  static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2071  static const char *const PPCTriples[] = {
2072  "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
2073  // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2074  // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2075  "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2076  static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2077  static const char *const PPC64Triples[] = {
2078  "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
2079  "powerpc64-suse-linux", "ppc64-redhat-linux"};
2080  static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2081  static const char *const PPC64LETriples[] = {
2082  "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
2083  "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
2084 
2085  static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2086  static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2087  "riscv32-linux-gnu",
2088  "riscv32-unknown-elf"};
2089  static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2090  static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2091  "riscv64-linux-gnu",
2092  "riscv64-unknown-elf",
2093  "riscv64-suse-linux"};
2094 
2095  static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2096  static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2097  "sparcv8-linux-gnu"};
2098  static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2099  static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2100  "sparcv9-linux-gnu"};
2101 
2102  static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2103  static const char *const SystemZTriples[] = {
2104  "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
2105  "s390x-suse-linux", "s390x-redhat-linux"};
2106 
2107 
2108  using std::begin;
2109  using std::end;
2110 
2111  if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2112  static const char *const SolarisLibDirs[] = {"/lib"};
2113  static const char *const SolarisSparcV8Triples[] = {
2114  "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"};
2115  static const char *const SolarisSparcV9Triples[] = {
2116  "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"};
2117  static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11",
2118  "i386-pc-solaris2.12"};
2119  static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11",
2120  "x86_64-pc-solaris2.12"};
2121  LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2122  BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2123  switch (TargetTriple.getArch()) {
2124  case llvm::Triple::x86:
2125  TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples));
2126  BiarchTripleAliases.append(begin(SolarisX86_64Triples),
2127  end(SolarisX86_64Triples));
2128  break;
2129  case llvm::Triple::x86_64:
2130  TripleAliases.append(begin(SolarisX86_64Triples),
2131  end(SolarisX86_64Triples));
2132  BiarchTripleAliases.append(begin(SolarisX86Triples),
2133  end(SolarisX86Triples));
2134  break;
2135  case llvm::Triple::sparc:
2136  TripleAliases.append(begin(SolarisSparcV8Triples),
2137  end(SolarisSparcV8Triples));
2138  BiarchTripleAliases.append(begin(SolarisSparcV9Triples),
2139  end(SolarisSparcV9Triples));
2140  break;
2141  case llvm::Triple::sparcv9:
2142  TripleAliases.append(begin(SolarisSparcV9Triples),
2143  end(SolarisSparcV9Triples));
2144  BiarchTripleAliases.append(begin(SolarisSparcV8Triples),
2145  end(SolarisSparcV8Triples));
2146  break;
2147  default:
2148  break;
2149  }
2150  return;
2151  }
2152 
2153  // Android targets should not use GNU/Linux tools or libraries.
2154  if (TargetTriple.isAndroid()) {
2155  static const char *const AArch64AndroidTriples[] = {
2156  "aarch64-linux-android"};
2157  static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2158  static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
2159  static const char *const MIPS64ELAndroidTriples[] = {
2160  "mips64el-linux-android"};
2161  static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2162  static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2163 
2164  switch (TargetTriple.getArch()) {
2165  case llvm::Triple::aarch64:
2166  LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2167  TripleAliases.append(begin(AArch64AndroidTriples),
2168  end(AArch64AndroidTriples));
2169  break;
2170  case llvm::Triple::arm:
2171  case llvm::Triple::thumb:
2172  LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2173  TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples));
2174  break;
2175  case llvm::Triple::mipsel:
2176  LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2177  TripleAliases.append(begin(MIPSELAndroidTriples),
2178  end(MIPSELAndroidTriples));
2179  BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2180  BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
2181  end(MIPS64ELAndroidTriples));
2182  break;
2183  case llvm::Triple::mips64el:
2184  LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2185  TripleAliases.append(begin(MIPS64ELAndroidTriples),
2186  end(MIPS64ELAndroidTriples));
2187  BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2188  BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
2189  end(MIPSELAndroidTriples));
2190  break;
2191  case llvm::Triple::x86_64:
2192  LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2193  TripleAliases.append(begin(X86_64AndroidTriples),
2194  end(X86_64AndroidTriples));
2195  BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2196  BiarchTripleAliases.append(begin(X86AndroidTriples),
2197  end(X86AndroidTriples));
2198  break;
2199  case llvm::Triple::x86:
2200  LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2201  TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples));
2202  BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2203  BiarchTripleAliases.append(begin(X86_64AndroidTriples),
2204  end(X86_64AndroidTriples));
2205  break;
2206  default:
2207  break;
2208  }
2209 
2210  return;
2211  }
2212 
2213  switch (TargetTriple.getArch()) {
2214  case llvm::Triple::aarch64:
2215  LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2216  TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2217  BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2218  BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2219  break;
2220  case llvm::Triple::aarch64_be:
2221  LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2222  TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2223  BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2224  BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2225  break;
2226  case llvm::Triple::arm:
2227  case llvm::Triple::thumb:
2228  LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2229  if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2230  TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
2231  } else {
2232  TripleAliases.append(begin(ARMTriples), end(ARMTriples));
2233  }
2234  break;
2235  case llvm::Triple::armeb:
2236  case llvm::Triple::thumbeb:
2237  LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
2238  if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2239  TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
2240  } else {
2241  TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
2242  }
2243  break;
2244  case llvm::Triple::avr:
2245  LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs));
2246  TripleAliases.append(begin(AVRTriples), end(AVRTriples));
2247  break;
2248  case llvm::Triple::x86_64:
2249  LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2250  TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2251  // x32 is always available when x86_64 is available, so adding it as
2252  // secondary arch with x86_64 triples
2253  if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) {
2254  BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2255  BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2256  } else {
2257  BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2258  BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
2259  }
2260  break;
2261  case llvm::Triple::x86:
2262  LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2263  // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2264  // itself, which will be appended below.
2265  if (!TargetTriple.isOSIAMCU()) {
2266  TripleAliases.append(begin(X86Triples), end(X86Triples));
2267  BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2268  BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2269  }
2270  break;
2271  case llvm::Triple::mips:
2272  LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2273  TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2274  BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2275  BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2276  BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2277  BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2278  break;
2279  case llvm::Triple::mipsel:
2280  LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2281  TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2282  TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2283  BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2284  BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2285  BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2286  BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2287  break;
2288  case llvm::Triple::mips64:
2289  LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2290  TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2291  BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2292  BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2293  BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2294  BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2295  break;
2296  case llvm::Triple::mips64el:
2297  LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2298  TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2299  BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2300  BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2301  BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2302  BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2303  BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2304  break;
2305  case llvm::Triple::msp430:
2306  LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
2307  TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
2308  break;
2309  case llvm::Triple::ppc:
2310  LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2311  TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2312  BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2313  BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2314  break;
2315  case llvm::Triple::ppc64:
2316  LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2317  TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2318  BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2319  BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2320  break;
2321  case llvm::Triple::ppc64le:
2322  LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2323  TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2324  break;
2325  case llvm::Triple::riscv32:
2326  LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2327  TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2328  BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2329  BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2330  break;
2331  case llvm::Triple::riscv64:
2332  LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2333  TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2334  BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2335  BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2336  break;
2337  case llvm::Triple::sparc:
2338  case llvm::Triple::sparcel:
2339  LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2340  TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2341  BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2342  BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2343  break;
2344  case llvm::Triple::sparcv9:
2345  LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2346  TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2347  BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2348  BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2349  break;
2350  case llvm::Triple::systemz:
2351  LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2352  TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2353  break;
2354  default:
2355  // By default, just rely on the standard lib directories and the original
2356  // triple.
2357  break;
2358  }
2359 
2360  // Always append the drivers target triple to the end, in case it doesn't
2361  // match any of our aliases.
2362  TripleAliases.push_back(TargetTriple.str());
2363 
2364  // Also include the multiarch variant if it's different.
2365  if (TargetTriple.str() != BiarchTriple.str())
2366  BiarchTripleAliases.push_back(BiarchTriple.str());
2367 }
2368 
2369 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2370  const llvm::Triple &TargetTriple, const ArgList &Args,
2371  StringRef Path, bool NeedsBiarchSuffix) {
2372  llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2373  DetectedMultilibs Detected;
2374 
2375  // Android standalone toolchain could have multilibs for ARM and Thumb.
2376  // Debian mips multilibs behave more like the rest of the biarch ones,
2377  // so handle them there
2378  if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2379  // It should also work without multilibs in a simplified toolchain.
2380  findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2381  } else if (TargetTriple.isMIPS()) {
2382  if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2383  return false;
2384  } else if (TargetTriple.isRISCV()) {
2385  findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
2386  } else if (isMSP430(TargetArch)) {
2387  findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
2388  } else if (TargetArch == llvm::Triple::avr) {
2389  // AVR has no multilibs.
2390  } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2391  NeedsBiarchSuffix, Detected)) {
2392  return false;
2393  }
2394 
2395  Multilibs = Detected.Multilibs;
2396  SelectedMultilib = Detected.SelectedMultilib;
2397  BiarchSibling = Detected.BiarchSibling;
2398 
2399  return true;
2400 }
2401 
2402 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2403  const llvm::Triple &TargetTriple, const ArgList &Args,
2404  const std::string &LibDir, StringRef CandidateTriple,
2405  bool NeedsBiarchSuffix) {
2406  llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2407  // Locations relative to the system lib directory where GCC's triple-specific
2408  // directories might reside.
2409  struct GCCLibSuffix {
2410  // Path from system lib directory to GCC triple-specific directory.
2411  std::string LibSuffix;
2412  // Path from GCC triple-specific directory back to system lib directory.
2413  // This is one '..' component per component in LibSuffix.
2414  StringRef ReversePath;
2415  // Whether this library suffix is relevant for the triple.
2416  bool Active;
2417  } Suffixes[] = {
2418  // This is the normal place.
2419  {"gcc/" + CandidateTriple.str(), "../..", true},
2420 
2421  // Debian puts cross-compilers in gcc-cross.
2422  {"gcc-cross/" + CandidateTriple.str(), "../..",
2423  TargetTriple.getOS() != llvm::Triple::Solaris},
2424 
2425  // The Freescale PPC SDK has the gcc libraries in
2426  // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2427  // this on Freescale triples, though, since some systems put a *lot* of
2428  // files in that location, not just GCC installation data.
2429  {CandidateTriple.str(), "..",
2430  TargetTriple.getVendor() == llvm::Triple::Freescale ||
2431  TargetTriple.getVendor() == llvm::Triple::OpenEmbedded},
2432 
2433  // Natively multiarch systems sometimes put the GCC triple-specific
2434  // directory within their multiarch lib directory, resulting in the
2435  // triple appearing twice.
2436  {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..",
2437  TargetTriple.getOS() != llvm::Triple::Solaris},
2438 
2439  // Deal with cases (on Ubuntu) where the system architecture could be i386
2440  // but the GCC target architecture could be (say) i686.
2441  // FIXME: It may be worthwhile to generalize this and look for a second
2442  // triple.
2443  {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..",
2444  (TargetArch == llvm::Triple::x86 &&
2445  TargetTriple.getOS() != llvm::Triple::Solaris)},
2446  {"i386-gnu/gcc/" + CandidateTriple.str(), "../../..",
2447  (TargetArch == llvm::Triple::x86 &&
2448  TargetTriple.getOS() != llvm::Triple::Solaris)}};
2449 
2450  for (auto &Suffix : Suffixes) {
2451  if (!Suffix.Active)
2452  continue;
2453 
2454  StringRef LibSuffix = Suffix.LibSuffix;
2455  std::error_code EC;
2456  for (llvm::vfs::directory_iterator
2457  LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2458  LE;
2459  !EC && LI != LE; LI = LI.increment(EC)) {
2460  StringRef VersionText = llvm::sys::path::filename(LI->path());
2461  GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2462  if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2463  if (!CandidateGCCInstallPaths.insert(LI->path()).second)
2464  continue; // Saw this path before; no need to look at it again.
2465  if (CandidateVersion.isOlderThan(4, 1, 1))
2466  continue;
2467  if (CandidateVersion <= Version)
2468  continue;
2469 
2470  if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(),
2471  NeedsBiarchSuffix))
2472  continue;
2473 
2474  Version = CandidateVersion;
2475  GCCTriple.setTriple(CandidateTriple);
2476  // FIXME: We hack together the directory name here instead of
2477  // using LI to ensure stable path separators across Windows and
2478  // Linux.
2479  GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2480  GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2481  IsValid = true;
2482  }
2483  }
2484 }
2485 
2486 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2487  const llvm::Triple &TargetTriple, const ArgList &Args,
2488  const SmallVectorImpl<StringRef> &CandidateTriples,
2489  const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2490  for (StringRef CandidateTriple : CandidateTriples) {
2491  if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2492  return true;
2493  }
2494 
2495  for (StringRef CandidateTriple : CandidateBiarchTriples) {
2496  if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
2497  return true;
2498  }
2499  return false;
2500 }
2501 
2502 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2503  const llvm::Triple &TargetTriple, const ArgList &Args,
2504  StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2505  llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2506  D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" +
2507  CandidateTriple.str());
2508  if (File) {
2510  File.get()->getBuffer().split(Lines, "\n");
2511  for (StringRef Line : Lines) {
2512  Line = Line.trim();
2513  // CURRENT=triple-version
2514  if (!Line.consume_front("CURRENT="))
2515  continue;
2516  // Process the config file pointed to by CURRENT.
2517  llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2518  D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/" +
2519  Line.str());
2520  std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-');
2521  // List of paths to scan for libraries.
2522  SmallVector<StringRef, 4> GentooScanPaths;
2523  // Scan the Config file to find installed GCC libraries path.
2524  // Typical content of the GCC config file:
2525  // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2526  // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2527  // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2528  // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2529  // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2530  // We are looking for the paths listed in LDPATH=... .
2531  if (ConfigFile) {
2532  SmallVector<StringRef, 2> ConfigLines;
2533  ConfigFile.get()->getBuffer().split(ConfigLines, "\n");
2534  for (StringRef ConfLine : ConfigLines) {
2535  ConfLine = ConfLine.trim();
2536  if (ConfLine.consume_front("LDPATH=")) {
2537  // Drop '"' from front and back if present.
2538  ConfLine.consume_back("\"");
2539  ConfLine.consume_front("\"");
2540  // Get all paths sperated by ':'
2541  ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false);
2542  }
2543  }
2544  }
2545  // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2546  std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2547  + ActiveVersion.second.str();
2548  GentooScanPaths.push_back(StringRef(basePath));
2549 
2550  // Scan all paths for GCC libraries.
2551  for (const auto &GentooScanPath : GentooScanPaths) {
2552  std::string GentooPath = D.SysRoot + std::string(GentooScanPath);
2553  if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2554  if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2555  NeedsBiarchSuffix))
2556  continue;
2557 
2558  Version = GCCVersion::Parse(ActiveVersion.second);
2559  GCCInstallPath = GentooPath;
2560  GCCParentLibPath = GentooPath + std::string("/../../..");
2561  GCCTriple.setTriple(ActiveVersion.first);
2562  IsValid = true;
2563  return true;
2564  }
2565  }
2566  }
2567  }
2568 
2569  return false;
2570 }
2571 
2572 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2573  const ArgList &Args)
2574  : ToolChain(D, Triple, Args), GCCInstallation(D),
2575  CudaInstallation(D, Triple, Args) {
2576  getProgramPaths().push_back(getDriver().getInstalledDir());
2577  if (getDriver().getInstalledDir() != getDriver().Dir)
2578  getProgramPaths().push_back(getDriver().Dir);
2579 }
2580 
2582 
2584  switch (AC) {
2586  if (!Preprocess)
2587  Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2588  return Preprocess.get();
2590  if (!Compile)
2591  Compile.reset(new tools::gcc::Compiler(*this));
2592  return Compile.get();
2593  default:
2594  return ToolChain::getTool(AC);
2595  }
2596 }
2597 
2599  return new tools::gnutools::Assembler(*this);
2600 }
2601 
2602 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2603 
2604 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2605  // Print the information about how we detected the GCC installation.
2606  GCCInstallation.print(OS);
2607  CudaInstallation.print(OS);
2608 }
2609 
2610 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
2611  return getArch() == llvm::Triple::x86_64;
2612 }
2613 
2615  switch (getArch()) {
2616  case llvm::Triple::x86_64:
2617  return getTriple().isOSWindows();
2618  case llvm::Triple::mips64:
2619  case llvm::Triple::mips64el:
2620  return true;
2621  default:
2622  return false;
2623  }
2624 }
2625 
2626 bool Generic_GCC::isPIEDefault() const { return false; }
2627 
2629  return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2630 }
2631 
2633  switch (getTriple().getArch()) {
2634  case llvm::Triple::x86:
2635  case llvm::Triple::x86_64:
2636  case llvm::Triple::aarch64:
2637  case llvm::Triple::aarch64_be:
2638  case llvm::Triple::arm:
2639  case llvm::Triple::armeb:
2640  case llvm::Triple::avr:
2641  case llvm::Triple::bpfel:
2642  case llvm::Triple::bpfeb:
2643  case llvm::Triple::thumb:
2644  case llvm::Triple::thumbeb:
2645  case llvm::Triple::ppc:
2646  case llvm::Triple::ppc64:
2647  case llvm::Triple::ppc64le:
2648  case llvm::Triple::riscv32:
2649  case llvm::Triple::riscv64:
2650  case llvm::Triple::systemz:
2651  case llvm::Triple::mips:
2652  case llvm::Triple::mipsel:
2653  case llvm::Triple::mips64:
2654  case llvm::Triple::mips64el:
2655  case llvm::Triple::msp430:
2656  return true;
2657  case llvm::Triple::sparc:
2658  case llvm::Triple::sparcel:
2659  case llvm::Triple::sparcv9:
2660  if (getTriple().isOSFreeBSD() || getTriple().isOSOpenBSD() ||
2661  getTriple().isOSSolaris())
2662  return true;
2663  return false;
2664  default:
2665  return false;
2666  }
2667 }
2668 
2669 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
2670  ArgStringList &CC1Args) const {
2671  if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
2672  DriverArgs.hasArg(options::OPT_nostdincxx))
2673  return;
2674 
2675  switch (GetCXXStdlibType(DriverArgs)) {
2676  case ToolChain::CST_Libcxx:
2677  addLibCxxIncludePaths(DriverArgs, CC1Args);
2678  break;
2679 
2681  addLibStdCxxIncludePaths(DriverArgs, CC1Args);
2682  break;
2683  }
2684 }
2685 
2686 static std::string DetectLibcxxIncludePath(llvm::vfs::FileSystem &vfs,
2687  StringRef base) {
2688  std::error_code EC;
2689  int MaxVersion = 0;
2690  std::string MaxVersionString;
2691  for (llvm::vfs::directory_iterator LI = vfs.dir_begin(base, EC), LE;
2692  !EC && LI != LE; LI = LI.increment(EC)) {
2693  StringRef VersionText = llvm::sys::path::filename(LI->path());
2694  int Version;
2695  if (VersionText[0] == 'v' &&
2696  !VersionText.slice(1, StringRef::npos).getAsInteger(10, Version)) {
2697  if (Version > MaxVersion) {
2698  MaxVersion = Version;
2699  MaxVersionString = VersionText;
2700  }
2701  }
2702  }
2703  return MaxVersion ? (base + "/" + MaxVersionString).str() : "";
2704 }
2705 
2706 void
2707 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2708  llvm::opt::ArgStringList &CC1Args) const {
2709  const std::string& SysRoot = getDriver().SysRoot;
2710  auto AddIncludePath = [&](std::string Path) {
2711  std::string IncludePath = DetectLibcxxIncludePath(getVFS(), Path);
2712  if (IncludePath.empty() || !getVFS().exists(IncludePath))
2713  return false;
2714  addSystemInclude(DriverArgs, CC1Args, IncludePath);
2715  return true;
2716  };
2717  // Android never uses the libc++ headers installed alongside the toolchain,
2718  // which are generally incompatible with the NDK libraries anyway.
2719  if (!getTriple().isAndroid())
2720  if (AddIncludePath(getDriver().Dir + "/../include/c++"))
2721  return;
2722  // If this is a development, non-installed, clang, libcxx will
2723  // not be found at ../include/c++ but it likely to be found at
2724  // one of the following two locations:
2725  if (AddIncludePath(SysRoot + "/usr/local/include/c++"))
2726  return;
2727  if (AddIncludePath(SysRoot + "/usr/include/c++"))
2728  return;
2729 }
2730 
2731 /// Helper to add the variant paths of a libstdc++ installation.
2733  Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple,
2734  StringRef TargetMultiarchTriple, Twine IncludeSuffix,
2735  const ArgList &DriverArgs, ArgStringList &CC1Args) const {
2736  if (!getVFS().exists(Base + Suffix))
2737  return false;
2738 
2739  addSystemInclude(DriverArgs, CC1Args, Base + Suffix);
2740 
2741  // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If
2742  // that path exists or we have neither a GCC nor target multiarch triple, use
2743  // this vanilla search path.
2744  if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) ||
2745  getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) {
2746  addSystemInclude(DriverArgs, CC1Args,
2747  Base + Suffix + "/" + GCCTriple + IncludeSuffix);
2748  } else {
2749  // Otherwise try to use multiarch naming schemes which have normalized the
2750  // triples and put the triple before the suffix.
2751  //
2752  // GCC surprisingly uses *both* the GCC triple with a multilib suffix and
2753  // the target triple, so we support that here.
2754  addSystemInclude(DriverArgs, CC1Args,
2755  Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix);
2756  addSystemInclude(DriverArgs, CC1Args,
2757  Base + "/" + TargetMultiarchTriple + Suffix);
2758  }
2759 
2760  addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward");
2761  return true;
2762 }
2763 
2764 bool
2765 Generic_GCC::addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2766  llvm::opt::ArgStringList &CC1Args) const {
2767  // Use GCCInstallation to know where libstdc++ headers are installed.
2768  if (!GCCInstallation.isValid())
2769  return false;
2770 
2771  // By default, look for the C++ headers in an include directory adjacent to
2772  // the lib directory of the GCC installation. Note that this is expect to be
2773  // equivalent to '/usr/include/c++/X.Y' in almost all cases.
2774  StringRef LibDir = GCCInstallation.getParentLibPath();
2775  StringRef InstallDir = GCCInstallation.getInstallPath();
2776  StringRef TripleStr = GCCInstallation.getTriple().str();
2778  const std::string GCCMultiarchTriple = getMultiarchTriple(
2780  const std::string TargetMultiarchTriple =
2782  const GCCVersion &Version = GCCInstallation.getVersion();
2783 
2784  // The primary search for libstdc++ supports multiarch variants.
2785  if (addLibStdCXXIncludePaths(LibDir.str() + "/../include",
2786  "/c++/" + Version.Text, TripleStr,
2787  GCCMultiarchTriple, TargetMultiarchTriple,
2788  Multilib.includeSuffix(), DriverArgs, CC1Args))
2789  return true;
2790 
2791  // Otherwise, fall back on a bunch of options which don't use multiarch
2792  // layouts for simplicity.
2793  const std::string LibStdCXXIncludePathCandidates[] = {
2794  // Gentoo is weird and places its headers inside the GCC install,
2795  // so if the first attempt to find the headers fails, try these patterns.
2796  InstallDir.str() + "/include/g++-v" + Version.Text,
2797  InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
2798  Version.MinorStr,
2799  InstallDir.str() + "/include/g++-v" + Version.MajorStr,
2800  };
2801 
2802  for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
2803  if (addLibStdCXXIncludePaths(IncludePath, /*Suffix*/ "", TripleStr,
2804  /*GCCMultiarchTriple*/ "",
2805  /*TargetMultiarchTriple*/ "",
2806  Multilib.includeSuffix(), DriverArgs, CC1Args))
2807  return true;
2808  }
2809  return false;
2810 }
2811 
2812 void
2813 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2814  llvm::opt::ArgStringList &CC1Args) const {
2815  addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args);
2816 }
2817 
2818 llvm::opt::DerivedArgList *
2819 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
2820  Action::OffloadKind DeviceOffloadKind) const {
2821 
2822  // If this tool chain is used for an OpenMP offloading device we have to make
2823  // sure we always generate a shared library regardless of the commands the
2824  // user passed to the host. This is required because the runtime library
2825  // is required to load the device image dynamically at run time.
2826  if (DeviceOffloadKind == Action::OFK_OpenMP) {
2827  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
2828  const OptTable &Opts = getDriver().getOpts();
2829 
2830  // Request the shared library. Given that these options are decided
2831  // implicitly, they do not refer to any base argument.
2832  DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
2833  DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
2834 
2835  // Filter all the arguments we don't care passing to the offloading
2836  // toolchain as they can mess up with the creation of a shared library.
2837  for (auto *A : Args) {
2838  switch ((options::ID)A->getOption().getID()) {
2839  default:
2840  DAL->append(A);
2841  break;
2842  case options::OPT_shared:
2843  case options::OPT_dynamic:
2844  case options::OPT_static:
2845  case options::OPT_fPIC:
2846  case options::OPT_fno_PIC:
2847  case options::OPT_fpic:
2848  case options::OPT_fno_pic:
2849  case options::OPT_fPIE:
2850  case options::OPT_fno_PIE:
2851  case options::OPT_fpie:
2852  case options::OPT_fno_pie:
2853  break;
2854  }
2855  }
2856  return DAL;
2857  }
2858  return nullptr;
2859 }
2860 
2861 void Generic_ELF::anchor() {}
2862 
2863 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
2864  ArgStringList &CC1Args,
2865  Action::OffloadKind) const {
2866  if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
2867  options::OPT_fno_use_init_array, true))
2868  CC1Args.push_back("-fno-use-init-array");
2869 }
const char * getPPCAsmModeForCPU(StringRef Name)
Definition: PPC.cpp:92
MultilibSet & Either(const Multilib &M1, const Multilib &M2)
Add a set of mutually incompatible Multilib segments.
Definition: Multilib.cpp:152
MultilibSet & Maybe(const Multilib &M)
Add an optional Multilib segment.
Definition: Multilib.cpp:142
bool IsStatic
Definition: Format.cpp:1837
bool isNoExecStackDefault() const override
Test whether this toolchaind defaults to non-executable stacks.
Definition: Linux.cpp:924
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: Linux.cpp:919
virtual std::string getDynamicLinker(const llvm::opt::ArgList &Args) const
Definition: Linux.cpp:510
static void findRISCVBareMetalMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1519
Tool * buildLinker() const override
Definition: Gnu.cpp:2602
bool addXRayRuntime(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
prefix_list PrefixDirs
Definition: Driver.h:145
const char * getSparcAsmModeForCPU(llvm::StringRef Name, const llvm::Triple &Triple)
static bool getPIE(const ArgList &Args, const toolchains::Linux &ToolChain)
Definition: Gnu.cpp:312
bool shouldUseFPXX(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef CPUName, StringRef ABIName, mips::FloatABI FloatABI)
bool isDefault() const
Check whether the default is selected.
Definition: Multilib.h:106
Tool * getTool(Action::ActionClass AC) const override
Definition: Gnu.cpp:2583
bool getBiarchSibling(Multilib &M) const
Get the biarch sibling multilib (if it exists).
Definition: Gnu.cpp:1935
static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path, const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1048
llvm::Optional< Multilib > BiarchSibling
On Biarch systems, this corresponds to the default multilib when targeting the non-default multilib...
Definition: Gnu.h:29
const llvm::Triple & getTriple() const
Get the GCC triple for the detected install.
Definition: Gnu.h:219
StringRef P
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:554
static GCCVersion Parse(StringRef VersionText)
Parse a GCCVersion object out of a string of text.
Definition: Gnu.cpp:1756
std::string DyldPrefix
Dynamic loader prefix, if present.
Definition: Driver.h:151
bool canTypeBeUserSpecified(ID Id)
canTypeBeUserSpecified - Can this type be specified on the command line (by the type name); this is u...
Definition: Types.cpp:95
void AddRunTimeLibs(const ToolChain &TC, const Driver &D, llvm::opt::ArgStringList &CmdArgs, const llvm::opt::ArgList &Args)
void AddHIPLinkerScript(const ToolChain &TC, Compilation &C, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA, const Tool &T)
bool isHostOffloading(OffloadKind OKind) const
Check if this action have any offload kinds.
Definition: Action.h:203
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:557
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:109
Struct to store and manipulate GCC versions.
Definition: Gnu.h:156
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:228
std::string GetLinkerPath() const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name...
Definition: ToolChain.cpp:520
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
std::string PatchSuffix
Any textual suffix on the patch number.
Definition: Gnu.h:167
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: Gnu.cpp:2626
bool select(const Multilib::flags_list &Flags, Multilib &M) const
Pick the best multilib in the set,.
Definition: Multilib.cpp:244
void print(raw_ostream &OS) const
Print information about the detected CUDA installation.
Definition: Cuda.cpp:263
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.
Multilib & flag(StringRef F)
Add a flag to the flags list Flag must be a flag accepted by the driver with its leading &#39;-&#39; removed...
Definition: Multilib.h:92
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
void print(raw_ostream &OS) const
Print information about the detected GCC installation.
Definition: Gnu.cpp:1921
const char * getFilename() const
Definition: InputInfo.h:83
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:195
GCCInstallationDetector GCCInstallation
Definition: Gnu.h:279
path_list & getProgramPaths()
Definition: ToolChain.h:240
static Multilib makeMultilib(StringRef commonSuffix)
Definition: Gnu.cpp:953
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
const std::string & includeSuffix() const
Get the include directory suffix.
Definition: Multilib.h:67
bool addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:2765
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfo &Input, bool IsThinLTO)
const std::string & gccSuffix() const
Get the detected GCC installation path suffix for the multi-arch target variant.
Definition: Multilib.h:45
static std::string DetectLibcxxIncludePath(llvm::vfs::FileSystem &vfs, StringRef base)
Definition: Gnu.cpp:2686
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool isNaN2008(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
void addMultilibFlag(bool Enabled, const char *const Flag, Multilib::flags_list &Flags)
Flag must be a flag accepted by the driver with its leading &#39;-&#39; removed,
std::string getSystemZTargetCPU(const llvm::opt::ArgList &Args)
StringRef getRISCVArch(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
Definition: RISCV.cpp:520
const std::string & osSuffix() const
Get the detected os path suffix for the multi-arch target variant.
Definition: Multilib.h:56
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
static bool isMipsEL(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:935
MultilibSet & setIncludeDirsCallback(IncludeDirsFunc F)
Definition: Multilib.h:174
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:512
types::ID getType() const
Definition: Action.h:142
virtual 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:918
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:59
bool hasMipsAbiArg(const llvm::opt::ArgList &Args, const char *Value)
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input, const InputInfo &Output)
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:200
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:344
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:319
const GCCVersion & getVersion() const
Get the detected GCC version string.
Definition: Gnu.h:238
void linkXRayRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
static bool isMips16(const ArgList &Args)
Definition: Gnu.cpp:939
StringRef getRISCVABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
CudaInstallationDetector CudaInstallation
Definition: Gnu.h:280
static bool isSoftFloatABI(const ArgList &Args)
Definition: Gnu.cpp:920
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:2669
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:43
const AnnotatedLine * Line
static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1087
static void normalizeCPUNamesForAssembler(const ArgList &Args, ArgStringList &CmdArgs)
Definition: Gnu.cpp:51
bool isPICDefault() const override
Test whether this toolchain defaults to PIC.
Definition: Gnu.cpp:2614
std::vector< std::string > flags_list
Definition: Multilib.h:30
void push_back(const Multilib &M)
Add a completed Multilib to the set.
Definition: Multilib.cpp:232
unsigned size() const
Definition: Multilib.h:169
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
This corresponds to a single GCC Multilib, or a segment of one controlled by a command line flag...
Definition: Multilib.h:28
static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1119
Tool * buildAssembler() const override
Definition: Gnu.cpp:2598
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
static bool forwardToGCC(const Option &O)
Definition: Gnu.cpp:41
bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const override
IsUnwindTablesDefault - Does this tool chain use -funwind-tables by default.
Definition: Gnu.cpp:2610
static const char * getLDMOption(const llvm::Triple &T, const ArgList &Args)
Definition: Gnu.cpp:257
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:215
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:391
void printVerboseInfo(raw_ostream &OS) const override
Dispatch to the specific toolchain for verbose printing.
Definition: Gnu.cpp:2604
static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1291
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:906
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:64
static llvm::StringRef getGCCToolchainDir(const ArgList &Args, llvm::StringRef SysRoot)
Definition: Gnu.cpp:1803
const Driver & getDriver() const
Definition: ToolChain.h:199
virtual void addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:2707
std::string InstalledDir
The path to the installed clang directory, if any.
Definition: Driver.h:129
bool isUCLibc(const llvm::opt::ArgList &Args)
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:173
static bool findMSP430Multilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1499
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:820
StringRef getParentLibPath() const
Get the detected GCC parent lib path.
Definition: Gnu.h:225
void SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T, const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Output, const char *OutFile)
static bool isArmOrThumbArch(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:931
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:755
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:99
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:634
bool isOlderThan(int RHSMajor, int RHSMinor, int RHSPatch, StringRef RHSPatchSuffix=StringRef()) const
Generic_GCC - A tool chain using the &#39;gcc&#39; command to perform all subcommands; this relies on gcc tra...
Definition: Gnu.cpp:1719
MultilibSet & setFilePathsCallback(IncludeDirsFunc F)
Definition: Multilib.h:181
static bool findBiarchMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, bool NeedsBiarchSuffix, DetectedMultilibs &Result)
Definition: Gnu.cpp:1610
bool isPICDefaultForced() const override
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
Definition: Gnu.cpp:2628
bool ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const
Returns if the C++ standard library should be linked in.
Definition: ToolChain.cpp:883
Dataflow Directional Tag Classes.
Generic_GCC(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Gnu.cpp:2572
virtual std::string getMultiarchTriple(const Driver &D, const llvm::Triple &TargetTriple, StringRef SysRoot) const
Definition: Gnu.h:303
static bool isMSP430(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:949
const std::string & getCCCGenericGCCName() const
Name to use when invoking gcc/g++.
Definition: Driver.h:311
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
std::string SysRoot
sysroot, if present
Definition: Driver.h:148
Tool - Information on a specific compilation tool.
Definition: Tool.h:33
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:2863
static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:957
bool IsIntegratedAssemblerDefault() const override
IsIntegratedAssemblerDefault - Does this tool chain enable -integrated-as by default.
Definition: Gnu.cpp:2632
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
std::string MajorStr
The text of the parsed major, and major+minor versions.
Definition: Gnu.h:164
static bool isArmBigEndian(const llvm::Triple &Triple, const ArgList &Args)
Definition: Gnu.cpp:237
std::string Text
The unparsed text of the version.
Definition: Gnu.h:158
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:2819
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
const llvm::Triple & getTriple() const
Definition: ToolChain.h:201
virtual void addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:2813
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:309
bool findMIPSMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const llvm::opt::ArgList &Args, DetectedMultilibs &Result)
void appendBE8LinkFlag(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const llvm::Triple &Triple)
StringRef getGnuCompatibleMipsABIName(StringRef ABI)
Definition: Mips.cpp:143
bool isNothing() const
Definition: InputInfo.h:74
MultilibSet & FilterOut(FilterCallback F)
Filter out some subset of the Multilibs using a user defined callback.
Definition: Multilib.cpp:212
bool LE(InterpState &S, CodePtr OpPC)
Definition: Interp.h:237
bool isFilename() const
Definition: InputInfo.h:75
static bool getStatic(const ArgList &Args)
Definition: Gnu.cpp:339
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:315
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:801
static constexpr CPUSuffix Suffixes[]
Definition: Hexagon.cpp:150
bool addLibStdCXXIncludePaths(Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple, StringRef TargetMultiarchTriple, Twine IncludeSuffix, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Helper to add the variant paths of a libstdc++ installation.
Definition: Gnu.cpp:2732
void init(const llvm::Triple &TargetTriple, const llvm::opt::ArgList &Args, ArrayRef< std::string > ExtraTripleAliases=None)
Initialize a GCCInstallationDetector from the driver.
Definition: Gnu.cpp:1827
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
MultilibSet Multilibs
The set of multilibs that the detected installation supports.
Definition: Gnu.h:22
std::vector< std::string > ExtraOpts
Definition: Linux.h:47
static bool isMicroMips(const ArgList &Args)
Definition: Gnu.cpp:944
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:178
int Major
The parsed major, minor, and patch numbers.
Definition: Gnu.h:161
StringRef getInstallPath() const
Get the detected GCC installation path.
Definition: Gnu.h:222
static void findAndroidArmMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1457
const Multilib & getMultilib() const
Get the detected Multilib.
Definition: Gnu.h:228
static void findRISCVMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1573
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:889
Multilib SelectedMultilib
The primary multilib appropriate for the given flags.
Definition: Gnu.h:25
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88
static bool getStaticPIE(const ArgList &Args, const toolchains::Linux &ToolChain)
Definition: Gnu.cpp:324
mips::FloatABI getMipsFloatABI(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
bool isValid() const
Check whether we detected a valid GCC install.
Definition: Gnu.h:216