clang  5.0.0
Gnu.cpp
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1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "Gnu.h"
11 #include "Linux.h"
12 #include "Arch/ARM.h"
13 #include "Arch/Mips.h"
14 #include "Arch/Sparc.h"
15 #include "Arch/SystemZ.h"
16 #include "CommonArgs.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 "llvm/Option/ArgList.h"
25 #include "llvm/Support/CodeGen.h"
26 #include "llvm/Support/Path.h"
27 #include "llvm/Support/TargetParser.h"
28 #include <system_error>
29 
30 using namespace clang::driver;
31 using namespace clang::driver::toolchains;
32 using namespace clang;
33 using namespace llvm::opt;
34 
35 void tools::GnuTool::anchor() {}
36 
37 static bool forwardToGCC(const Option &O) {
38  // Don't forward inputs from the original command line. They are added from
39  // InputInfoList.
40  return O.getKind() != Option::InputClass &&
41  !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput);
42 }
43 
45  const InputInfo &Output,
46  const InputInfoList &Inputs,
47  const ArgList &Args,
48  const char *LinkingOutput) const {
49  const Driver &D = getToolChain().getDriver();
50  ArgStringList CmdArgs;
51 
52  for (const auto &A : Args) {
53  if (forwardToGCC(A->getOption())) {
54  // It is unfortunate that we have to claim here, as this means
55  // we will basically never report anything interesting for
56  // platforms using a generic gcc, even if we are just using gcc
57  // to get to the assembler.
58  A->claim();
59 
60  // Don't forward any -g arguments to assembly steps.
61  if (isa<AssembleJobAction>(JA) &&
62  A->getOption().matches(options::OPT_g_Group))
63  continue;
64 
65  // Don't forward any -W arguments to assembly and link steps.
66  if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
67  A->getOption().matches(options::OPT_W_Group))
68  continue;
69 
70  A->render(Args, CmdArgs);
71  }
72  }
73 
74  RenderExtraToolArgs(JA, CmdArgs);
75 
76  // If using a driver driver, force the arch.
77  if (getToolChain().getTriple().isOSDarwin()) {
78  CmdArgs.push_back("-arch");
79  CmdArgs.push_back(
80  Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
81  }
82 
83  // Try to force gcc to match the tool chain we want, if we recognize
84  // the arch.
85  //
86  // FIXME: The triple class should directly provide the information we want
87  // here.
88  switch (getToolChain().getArch()) {
89  default:
90  break;
91  case llvm::Triple::x86:
92  case llvm::Triple::ppc:
93  CmdArgs.push_back("-m32");
94  break;
95  case llvm::Triple::x86_64:
96  case llvm::Triple::ppc64:
97  case llvm::Triple::ppc64le:
98  CmdArgs.push_back("-m64");
99  break;
100  case llvm::Triple::sparcel:
101  CmdArgs.push_back("-EL");
102  break;
103  }
104 
105  if (Output.isFilename()) {
106  CmdArgs.push_back("-o");
107  CmdArgs.push_back(Output.getFilename());
108  } else {
109  assert(Output.isNothing() && "Unexpected output");
110  CmdArgs.push_back("-fsyntax-only");
111  }
112 
113  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
114 
115  // Only pass -x if gcc will understand it; otherwise hope gcc
116  // understands the suffix correctly. The main use case this would go
117  // wrong in is for linker inputs if they happened to have an odd
118  // suffix; really the only way to get this to happen is a command
119  // like '-x foobar a.c' which will treat a.c like a linker input.
120  //
121  // FIXME: For the linker case specifically, can we safely convert
122  // inputs into '-Wl,' options?
123  for (const auto &II : Inputs) {
124  // Don't try to pass LLVM or AST inputs to a generic gcc.
125  if (types::isLLVMIR(II.getType()))
126  D.Diag(clang::diag::err_drv_no_linker_llvm_support)
127  << getToolChain().getTripleString();
128  else if (II.getType() == types::TY_AST)
129  D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
130  else if (II.getType() == types::TY_ModuleFile)
131  D.Diag(diag::err_drv_no_module_support)
132  << getToolChain().getTripleString();
133 
134  if (types::canTypeBeUserSpecified(II.getType())) {
135  CmdArgs.push_back("-x");
136  CmdArgs.push_back(types::getTypeName(II.getType()));
137  }
138 
139  if (II.isFilename())
140  CmdArgs.push_back(II.getFilename());
141  else {
142  const Arg &A = II.getInputArg();
143 
144  // Reverse translate some rewritten options.
145  if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
146  CmdArgs.push_back("-lstdc++");
147  continue;
148  }
149 
150  // Don't render as input, we need gcc to do the translations.
151  A.render(Args, CmdArgs);
152  }
153  }
154 
155  const std::string &customGCCName = D.getCCCGenericGCCName();
156  const char *GCCName;
157  if (!customGCCName.empty())
158  GCCName = customGCCName.c_str();
159  else if (D.CCCIsCXX()) {
160  GCCName = "g++";
161  } else
162  GCCName = "gcc";
163 
164  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
165  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
166 }
167 
169  const JobAction &JA, ArgStringList &CmdArgs) const {
170  CmdArgs.push_back("-E");
171 }
172 
174  ArgStringList &CmdArgs) const {
175  const Driver &D = getToolChain().getDriver();
176 
177  switch (JA.getType()) {
178  // If -flto, etc. are present then make sure not to force assembly output.
179  case types::TY_LLVM_IR:
180  case types::TY_LTO_IR:
181  case types::TY_LLVM_BC:
182  case types::TY_LTO_BC:
183  CmdArgs.push_back("-c");
184  break;
185  // We assume we've got an "integrated" assembler in that gcc will produce an
186  // object file itself.
187  case types::TY_Object:
188  CmdArgs.push_back("-c");
189  break;
190  case types::TY_PP_Asm:
191  CmdArgs.push_back("-S");
192  break;
193  case types::TY_Nothing:
194  CmdArgs.push_back("-fsyntax-only");
195  break;
196  default:
197  D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
198  }
199 }
200 
202  ArgStringList &CmdArgs) const {
203  // The types are (hopefully) good enough.
204 }
205 
206 /// Add OpenMP linker script arguments at the end of the argument list so that
207 /// the fat binary is built by embedding each of the device images into the
208 /// host. The linker script also defines a few symbols required by the code
209 /// generation so that the images can be easily retrieved at runtime by the
210 /// offloading library. This should be used only in tool chains that support
211 /// linker scripts.
212 static void AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C,
213  const InputInfo &Output,
214  const InputInfoList &Inputs,
215  const ArgList &Args, ArgStringList &CmdArgs,
216  const JobAction &JA) {
217 
218  // If this is not an OpenMP host toolchain, we don't need to do anything.
220  return;
221 
222  // Create temporary linker script. Keep it if save-temps is enabled.
223  const char *LKS;
224  SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
225  if (C.getDriver().isSaveTempsEnabled()) {
226  llvm::sys::path::replace_extension(Name, "lk");
227  LKS = C.getArgs().MakeArgString(Name.c_str());
228  } else {
229  llvm::sys::path::replace_extension(Name, "");
230  Name = C.getDriver().GetTemporaryPath(Name, "lk");
231  LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
232  }
233 
234  // Add linker script option to the command.
235  CmdArgs.push_back("-T");
236  CmdArgs.push_back(LKS);
237 
238  // Create a buffer to write the contents of the linker script.
239  std::string LksBuffer;
240  llvm::raw_string_ostream LksStream(LksBuffer);
241 
242  // Get the OpenMP offload tool chains so that we can extract the triple
243  // associated with each device input.
244  auto OpenMPToolChains = C.getOffloadToolChains<Action::OFK_OpenMP>();
245  assert(OpenMPToolChains.first != OpenMPToolChains.second &&
246  "No OpenMP toolchains??");
247 
248  // Track the input file name and device triple in order to build the script,
249  // inserting binaries in the designated sections.
251 
252  // Add commands to embed target binaries. We ensure that each section and
253  // image is 16-byte aligned. This is not mandatory, but increases the
254  // likelihood of data to be aligned with a cache block in several main host
255  // machines.
256  LksStream << "/*\n";
257  LksStream << " OpenMP Offload Linker Script\n";
258  LksStream << " *** Automatically generated by Clang ***\n";
259  LksStream << "*/\n";
260  LksStream << "TARGET(binary)\n";
261  auto DTC = OpenMPToolChains.first;
262  for (auto &II : Inputs) {
263  const Action *A = II.getAction();
264  // Is this a device linking action?
265  if (A && isa<LinkJobAction>(A) &&
267  assert(DTC != OpenMPToolChains.second &&
268  "More device inputs than device toolchains??");
269  InputBinaryInfo.push_back(std::make_pair(
270  DTC->second->getTriple().normalize(), II.getFilename()));
271  ++DTC;
272  LksStream << "INPUT(" << II.getFilename() << ")\n";
273  }
274  }
275 
276  assert(DTC == OpenMPToolChains.second &&
277  "Less device inputs than device toolchains??");
278 
279  LksStream << "SECTIONS\n";
280  LksStream << "{\n";
281 
282  // Put each target binary into a separate section.
283  for (const auto &BI : InputBinaryInfo) {
284  LksStream << " .omp_offloading." << BI.first << " :\n";
285  LksStream << " ALIGN(0x10)\n";
286  LksStream << " {\n";
287  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_start." << BI.first
288  << " = .);\n";
289  LksStream << " " << BI.second << "\n";
290  LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_end." << BI.first
291  << " = .);\n";
292  LksStream << " }\n";
293  }
294 
295  // Add commands to define host entries begin and end. We use 1-byte subalign
296  // so that the linker does not add any padding and the elements in this
297  // section form an array.
298  LksStream << " .omp_offloading.entries :\n";
299  LksStream << " ALIGN(0x10)\n";
300  LksStream << " SUBALIGN(0x01)\n";
301  LksStream << " {\n";
302  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_begin = .);\n";
303  LksStream << " *(.omp_offloading.entries)\n";
304  LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_end = .);\n";
305  LksStream << " }\n";
306  LksStream << "}\n";
307  LksStream << "INSERT BEFORE .data\n";
308  LksStream.flush();
309 
310  // Dump the contents of the linker script if the user requested that. We
311  // support this option to enable testing of behavior with -###.
312  if (C.getArgs().hasArg(options::OPT_fopenmp_dump_offload_linker_script))
313  llvm::errs() << LksBuffer;
314 
315  // If this is a dry run, do not create the linker script file.
316  if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
317  return;
318 
319  // Open script file and write the contents.
320  std::error_code EC;
321  llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
322 
323  if (EC) {
324  C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
325  return;
326  }
327 
328  Lksf << LksBuffer;
329 }
330 
331 static bool addXRayRuntime(const ToolChain &TC, const ArgList &Args,
332  ArgStringList &CmdArgs) {
333  if (Args.hasFlag(options::OPT_fxray_instrument,
334  options::OPT_fnoxray_instrument, false)) {
335  CmdArgs.push_back("-whole-archive");
336  CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray", false));
337  CmdArgs.push_back("-no-whole-archive");
338  return true;
339  }
340  return false;
341 }
342 
343 static void linkXRayRuntimeDeps(const ToolChain &TC, const ArgList &Args,
344  ArgStringList &CmdArgs) {
345  CmdArgs.push_back("--no-as-needed");
346  CmdArgs.push_back("-lpthread");
347  CmdArgs.push_back("-lrt");
348  CmdArgs.push_back("-lm");
349 
350  if (TC.getTriple().getOS() != llvm::Triple::FreeBSD)
351  CmdArgs.push_back("-ldl");
352 }
353 
354 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
355  switch (T.getArch()) {
356  case llvm::Triple::x86:
357  if (T.isOSIAMCU())
358  return "elf_iamcu";
359  return "elf_i386";
360  case llvm::Triple::aarch64:
361  return "aarch64linux";
362  case llvm::Triple::aarch64_be:
363  return "aarch64_be_linux";
364  case llvm::Triple::arm:
365  case llvm::Triple::thumb:
366  return "armelf_linux_eabi";
367  case llvm::Triple::armeb:
368  case llvm::Triple::thumbeb:
369  return "armelfb_linux_eabi";
370  case llvm::Triple::ppc:
371  return "elf32ppclinux";
372  case llvm::Triple::ppc64:
373  return "elf64ppc";
374  case llvm::Triple::ppc64le:
375  return "elf64lppc";
376  case llvm::Triple::sparc:
377  case llvm::Triple::sparcel:
378  return "elf32_sparc";
379  case llvm::Triple::sparcv9:
380  return "elf64_sparc";
381  case llvm::Triple::mips:
382  return "elf32btsmip";
383  case llvm::Triple::mipsel:
384  return "elf32ltsmip";
385  case llvm::Triple::mips64:
386  if (tools::mips::hasMipsAbiArg(Args, "n32"))
387  return "elf32btsmipn32";
388  return "elf64btsmip";
389  case llvm::Triple::mips64el:
390  if (tools::mips::hasMipsAbiArg(Args, "n32"))
391  return "elf32ltsmipn32";
392  return "elf64ltsmip";
393  case llvm::Triple::systemz:
394  return "elf64_s390";
395  case llvm::Triple::x86_64:
396  if (T.getEnvironment() == llvm::Triple::GNUX32)
397  return "elf32_x86_64";
398  return "elf_x86_64";
399  default:
400  return nullptr;
401  }
402 }
403 
405  const InputInfo &Output,
406  const InputInfoList &Inputs,
407  const ArgList &Args,
408  const char *LinkingOutput) const {
410  static_cast<const toolchains::Linux &>(getToolChain());
411  const Driver &D = ToolChain.getDriver();
412 
413  const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
414 
415  const llvm::Triple::ArchType Arch = ToolChain.getArch();
416  const bool isAndroid = ToolChain.getTriple().isAndroid();
417  const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
418  const bool IsPIE =
419  !Args.hasArg(options::OPT_shared) && !Args.hasArg(options::OPT_static) &&
420  (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
421  const bool HasCRTBeginEndFiles =
422  ToolChain.getTriple().hasEnvironment() ||
423  (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
424 
425  ArgStringList CmdArgs;
426 
427  // Silence warning for "clang -g foo.o -o foo"
428  Args.ClaimAllArgs(options::OPT_g_Group);
429  // and "clang -emit-llvm foo.o -o foo"
430  Args.ClaimAllArgs(options::OPT_emit_llvm);
431  // and for "clang -w foo.o -o foo". Other warning options are already
432  // handled somewhere else.
433  Args.ClaimAllArgs(options::OPT_w);
434 
435  const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
436  if (llvm::sys::path::stem(Exec) == "lld") {
437  CmdArgs.push_back("-flavor");
438  CmdArgs.push_back("old-gnu");
439  CmdArgs.push_back("-target");
440  CmdArgs.push_back(Args.MakeArgString(getToolChain().getTripleString()));
441  }
442 
443  if (!D.SysRoot.empty())
444  CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
445 
446  if (IsPIE)
447  CmdArgs.push_back("-pie");
448 
449  if (Args.hasArg(options::OPT_rdynamic))
450  CmdArgs.push_back("-export-dynamic");
451 
452  if (Args.hasArg(options::OPT_s))
453  CmdArgs.push_back("-s");
454 
455  if (Arch == llvm::Triple::armeb || Arch == llvm::Triple::thumbeb)
456  arm::appendEBLinkFlags(Args, CmdArgs, Triple);
457 
458  // Most Android ARM64 targets should enable the linker fix for erratum
459  // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
460  if (Arch == llvm::Triple::aarch64 && isAndroid) {
461  std::string CPU = getCPUName(Args, Triple);
462  if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
463  CmdArgs.push_back("--fix-cortex-a53-843419");
464  }
465 
466  for (const auto &Opt : ToolChain.ExtraOpts)
467  CmdArgs.push_back(Opt.c_str());
468 
469  if (!Args.hasArg(options::OPT_static)) {
470  CmdArgs.push_back("--eh-frame-hdr");
471  }
472 
473  if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
474  CmdArgs.push_back("-m");
475  CmdArgs.push_back(LDMOption);
476  } else {
477  D.Diag(diag::err_target_unknown_triple) << Triple.str();
478  return;
479  }
480 
481  if (Args.hasArg(options::OPT_static)) {
482  if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
483  Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb)
484  CmdArgs.push_back("-Bstatic");
485  else
486  CmdArgs.push_back("-static");
487  } else if (Args.hasArg(options::OPT_shared)) {
488  CmdArgs.push_back("-shared");
489  }
490 
491  if (!Args.hasArg(options::OPT_static)) {
492  if (Args.hasArg(options::OPT_rdynamic))
493  CmdArgs.push_back("-export-dynamic");
494 
495  if (!Args.hasArg(options::OPT_shared)) {
496  const std::string Loader =
497  D.DyldPrefix + ToolChain.getDynamicLinker(Args);
498  CmdArgs.push_back("-dynamic-linker");
499  CmdArgs.push_back(Args.MakeArgString(Loader));
500  }
501  }
502 
503  CmdArgs.push_back("-o");
504  CmdArgs.push_back(Output.getFilename());
505 
506  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
507  if (!isAndroid && !IsIAMCU) {
508  const char *crt1 = nullptr;
509  if (!Args.hasArg(options::OPT_shared)) {
510  if (Args.hasArg(options::OPT_pg))
511  crt1 = "gcrt1.o";
512  else if (IsPIE)
513  crt1 = "Scrt1.o";
514  else
515  crt1 = "crt1.o";
516  }
517  if (crt1)
518  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
519 
520  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
521  }
522 
523  if (IsIAMCU)
524  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
525  else {
526  const char *crtbegin;
527  if (Args.hasArg(options::OPT_static))
528  crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
529  else if (Args.hasArg(options::OPT_shared))
530  crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
531  else if (IsPIE)
532  crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
533  else
534  crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
535 
536  if (HasCRTBeginEndFiles)
537  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
538  }
539 
540  // Add crtfastmath.o if available and fast math is enabled.
541  ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
542  }
543 
544  Args.AddAllArgs(CmdArgs, options::OPT_L);
545  Args.AddAllArgs(CmdArgs, options::OPT_u);
546 
547  ToolChain.AddFilePathLibArgs(Args, CmdArgs);
548 
549  if (D.isUsingLTO())
550  AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin, D);
551 
552  if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
553  CmdArgs.push_back("--no-demangle");
554 
555  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
556  bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
557  AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
558  // The profile runtime also needs access to system libraries.
559  getToolChain().addProfileRTLibs(Args, CmdArgs);
560 
561  if (D.CCCIsCXX() &&
562  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
563  bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
564  !Args.hasArg(options::OPT_static);
565  if (OnlyLibstdcxxStatic)
566  CmdArgs.push_back("-Bstatic");
567  ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
568  if (OnlyLibstdcxxStatic)
569  CmdArgs.push_back("-Bdynamic");
570  CmdArgs.push_back("-lm");
571  }
572  // Silence warnings when linking C code with a C++ '-stdlib' argument.
573  Args.ClaimAllArgs(options::OPT_stdlib_EQ);
574 
575  if (!Args.hasArg(options::OPT_nostdlib)) {
576  if (!Args.hasArg(options::OPT_nodefaultlibs)) {
577  if (Args.hasArg(options::OPT_static))
578  CmdArgs.push_back("--start-group");
579 
580  if (NeedsSanitizerDeps)
581  linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
582 
583  if (NeedsXRayDeps)
584  linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);
585 
586  bool WantPthread = Args.hasArg(options::OPT_pthread) ||
587  Args.hasArg(options::OPT_pthreads);
588 
589  // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
590  // require librt. Most modern Linux platforms do, but some may not.
591  if (addOpenMPRuntime(CmdArgs, ToolChain, Args,
593  /* GompNeedsRT= */ true))
594  // OpenMP runtimes implies pthreads when using the GNU toolchain.
595  // FIXME: Does this really make sense for all GNU toolchains?
596  WantPthread = true;
597 
598  AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
599 
600  if (WantPthread && !isAndroid)
601  CmdArgs.push_back("-lpthread");
602 
603  if (Args.hasArg(options::OPT_fsplit_stack))
604  CmdArgs.push_back("--wrap=pthread_create");
605 
606  CmdArgs.push_back("-lc");
607 
608  // Add IAMCU specific libs, if needed.
609  if (IsIAMCU)
610  CmdArgs.push_back("-lgloss");
611 
612  if (Args.hasArg(options::OPT_static))
613  CmdArgs.push_back("--end-group");
614  else
615  AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
616 
617  // Add IAMCU specific libs (outside the group), if needed.
618  if (IsIAMCU) {
619  CmdArgs.push_back("--as-needed");
620  CmdArgs.push_back("-lsoftfp");
621  CmdArgs.push_back("--no-as-needed");
622  }
623  }
624 
625  if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
626  const char *crtend;
627  if (Args.hasArg(options::OPT_shared))
628  crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
629  else if (IsPIE)
630  crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
631  else
632  crtend = isAndroid ? "crtend_android.o" : "crtend.o";
633 
634  if (HasCRTBeginEndFiles)
635  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend)));
636  if (!isAndroid)
637  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
638  }
639  }
640 
641  // Add OpenMP offloading linker script args if required.
642  AddOpenMPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA);
643 
644  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
645 }
646 
648  const JobAction &JA,
649  const InputInfo &Output,
650  const InputInfoList &Inputs,
651  const ArgList &Args,
652  const char *LinkingOutput) const {
653  const auto &D = getToolChain().getDriver();
654 
655  claimNoWarnArgs(Args);
656 
657  ArgStringList CmdArgs;
658 
659  llvm::Reloc::Model RelocationModel;
660  unsigned PICLevel;
661  bool IsPIE;
662  std::tie(RelocationModel, PICLevel, IsPIE) =
663  ParsePICArgs(getToolChain(), Args);
664 
665  if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
666  if (A->getOption().getID() == options::OPT_gz) {
667  CmdArgs.push_back("-compress-debug-sections");
668  } else {
669  StringRef Value = A->getValue();
670  if (Value == "none") {
671  CmdArgs.push_back("-compress-debug-sections=none");
672  } else if (Value == "zlib" || Value == "zlib-gnu") {
673  CmdArgs.push_back(
674  Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
675  } else {
676  D.Diag(diag::err_drv_unsupported_option_argument)
677  << A->getOption().getName() << Value;
678  }
679  }
680  }
681 
682  switch (getToolChain().getArch()) {
683  default:
684  break;
685  // Add --32/--64 to make sure we get the format we want.
686  // This is incomplete
687  case llvm::Triple::x86:
688  CmdArgs.push_back("--32");
689  break;
690  case llvm::Triple::x86_64:
691  if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32)
692  CmdArgs.push_back("--x32");
693  else
694  CmdArgs.push_back("--64");
695  break;
696  case llvm::Triple::ppc:
697  CmdArgs.push_back("-a32");
698  CmdArgs.push_back("-mppc");
699  CmdArgs.push_back("-many");
700  break;
701  case llvm::Triple::ppc64:
702  CmdArgs.push_back("-a64");
703  CmdArgs.push_back("-mppc64");
704  CmdArgs.push_back("-many");
705  break;
706  case llvm::Triple::ppc64le:
707  CmdArgs.push_back("-a64");
708  CmdArgs.push_back("-mppc64");
709  CmdArgs.push_back("-many");
710  CmdArgs.push_back("-mlittle-endian");
711  break;
712  case llvm::Triple::sparc:
713  case llvm::Triple::sparcel: {
714  CmdArgs.push_back("-32");
715  std::string CPU = getCPUName(Args, getToolChain().getTriple());
716  CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
717  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
718  break;
719  }
720  case llvm::Triple::sparcv9: {
721  CmdArgs.push_back("-64");
722  std::string CPU = getCPUName(Args, getToolChain().getTriple());
723  CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
724  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
725  break;
726  }
727  case llvm::Triple::arm:
728  case llvm::Triple::armeb:
729  case llvm::Triple::thumb:
730  case llvm::Triple::thumbeb: {
731  const llvm::Triple &Triple2 = getToolChain().getTriple();
732  switch (Triple2.getSubArch()) {
733  case llvm::Triple::ARMSubArch_v7:
734  CmdArgs.push_back("-mfpu=neon");
735  break;
736  case llvm::Triple::ARMSubArch_v8:
737  CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
738  break;
739  default:
740  break;
741  }
742 
743  switch (arm::getARMFloatABI(getToolChain(), Args)) {
744  case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
745  case arm::FloatABI::Soft:
746  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
747  break;
748  case arm::FloatABI::SoftFP:
749  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
750  break;
751  case arm::FloatABI::Hard:
752  CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
753  break;
754  }
755 
756  Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
757 
758  // FIXME: remove krait check when GNU tools support krait cpu
759  // for now replace it with -mcpu=cortex-a15 to avoid a lower
760  // march from being picked in the absence of a cpu flag.
761  Arg *A;
762  if ((A = Args.getLastArg(options::OPT_mcpu_EQ)) &&
763  StringRef(A->getValue()).equals_lower("krait"))
764  CmdArgs.push_back("-mcpu=cortex-a15");
765  else
766  Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
767  Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
768  break;
769  }
770  case llvm::Triple::aarch64:
771  case llvm::Triple::aarch64_be: {
772  Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
773  Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
774  break;
775  }
776  case llvm::Triple::mips:
777  case llvm::Triple::mipsel:
778  case llvm::Triple::mips64:
779  case llvm::Triple::mips64el: {
780  StringRef CPUName;
781  StringRef ABIName;
782  mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
783  ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
784 
785  CmdArgs.push_back("-march");
786  CmdArgs.push_back(CPUName.data());
787 
788  CmdArgs.push_back("-mabi");
789  CmdArgs.push_back(ABIName.data());
790 
791  // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
792  // or -mshared (not implemented) is in effect.
793  if (RelocationModel == llvm::Reloc::Static)
794  CmdArgs.push_back("-mno-shared");
795 
796  // LLVM doesn't support -mplt yet and acts as if it is always given.
797  // However, -mplt has no effect with the N64 ABI.
798  if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
799  CmdArgs.push_back("-call_nonpic");
800 
801  if (getToolChain().getArch() == llvm::Triple::mips ||
802  getToolChain().getArch() == llvm::Triple::mips64)
803  CmdArgs.push_back("-EB");
804  else
805  CmdArgs.push_back("-EL");
806 
807  if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
808  if (StringRef(A->getValue()) == "2008")
809  CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
810  }
811 
812  // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
813  if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
814  options::OPT_mfp64)) {
815  A->claim();
816  A->render(Args, CmdArgs);
817  } else if (mips::shouldUseFPXX(
818  Args, getToolChain().getTriple(), CPUName, ABIName,
819  mips::getMipsFloatABI(getToolChain().getDriver(), Args)))
820  CmdArgs.push_back("-mfpxx");
821 
822  // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
823  // -mno-mips16 is actually -no-mips16.
824  if (Arg *A =
825  Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
826  if (A->getOption().matches(options::OPT_mips16)) {
827  A->claim();
828  A->render(Args, CmdArgs);
829  } else {
830  A->claim();
831  CmdArgs.push_back("-no-mips16");
832  }
833  }
834 
835  Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
836  options::OPT_mno_micromips);
837  Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
838  Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
839 
840  if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
841  // Do not use AddLastArg because not all versions of MIPS assembler
842  // support -mmsa / -mno-msa options.
843  if (A->getOption().matches(options::OPT_mmsa))
844  CmdArgs.push_back(Args.MakeArgString("-mmsa"));
845  }
846 
847  Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
848  options::OPT_msoft_float);
849 
850  Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
851  options::OPT_msingle_float);
852 
853  Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
854  options::OPT_mno_odd_spreg);
855 
856  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
857  break;
858  }
859  case llvm::Triple::systemz: {
860  // Always pass an -march option, since our default of z10 is later
861  // than the GNU assembler's default.
862  StringRef CPUName = systemz::getSystemZTargetCPU(Args);
863  CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
864  break;
865  }
866  }
867 
868  Args.AddAllArgs(CmdArgs, options::OPT_I);
869  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
870 
871  CmdArgs.push_back("-o");
872  CmdArgs.push_back(Output.getFilename());
873 
874  for (const auto &II : Inputs)
875  CmdArgs.push_back(II.getFilename());
876 
877  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
878  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
879 
880  // Handle the debug info splitting at object creation time if we're
881  // creating an object.
882  // TODO: Currently only works on linux with newer objcopy.
883  if (Args.hasArg(options::OPT_gsplit_dwarf) &&
884  getToolChain().getTriple().isOSLinux())
885  SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
886  SplitDebugName(Args, Inputs[0]));
887 }
888 
889 namespace {
890 // Filter to remove Multilibs that don't exist as a suffix to Path
891 class FilterNonExistent {
892  StringRef Base, File;
893  vfs::FileSystem &VFS;
894 
895 public:
896  FilterNonExistent(StringRef Base, StringRef File, vfs::FileSystem &VFS)
897  : Base(Base), File(File), VFS(VFS) {}
898  bool operator()(const Multilib &M) {
899  return !VFS.exists(Base + M.gccSuffix() + File);
900  }
901 };
902 } // end anonymous namespace
903 
904 static bool isSoftFloatABI(const ArgList &Args) {
905  Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
906  options::OPT_mfloat_abi_EQ);
907  if (!A)
908  return false;
909 
910  return A->getOption().matches(options::OPT_msoft_float) ||
911  (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
912  A->getValue() == StringRef("soft"));
913 }
914 
915 /// \p Flag must be a flag accepted by the driver with its leading '-' removed,
916 // otherwise '-print-multi-lib' will not emit them correctly.
917 static void addMultilibFlag(bool Enabled, const char *const Flag,
918  std::vector<std::string> &Flags) {
919  if (Enabled)
920  Flags.push_back(std::string("+") + Flag);
921  else
922  Flags.push_back(std::string("-") + Flag);
923 }
924 
925 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
926  return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
927 }
928 
929 static bool isMips32(llvm::Triple::ArchType Arch) {
930  return Arch == llvm::Triple::mips || Arch == llvm::Triple::mipsel;
931 }
932 
933 static bool isMips64(llvm::Triple::ArchType Arch) {
934  return Arch == llvm::Triple::mips64 || Arch == llvm::Triple::mips64el;
935 }
936 
937 static bool isMipsEL(llvm::Triple::ArchType Arch) {
938  return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
939 }
940 
941 static bool isMips16(const ArgList &Args) {
942  Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
943  return A && A->getOption().matches(options::OPT_mips16);
944 }
945 
946 static bool isMicroMips(const ArgList &Args) {
947  Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
948  return A && A->getOption().matches(options::OPT_mmicromips);
949 }
950 
951 static Multilib makeMultilib(StringRef commonSuffix) {
952  return Multilib(commonSuffix, commonSuffix, commonSuffix);
953 }
954 
955 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
956  FilterNonExistent &NonExistent,
957  DetectedMultilibs &Result) {
958  // Check for Code Sourcery toolchain multilibs
959  MultilibSet CSMipsMultilibs;
960  {
961  auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
962 
963  auto MArchMicroMips =
964  makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
965 
966  auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
967 
968  auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
969 
970  auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
971 
972  auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
973 
974  auto DefaultFloat =
975  makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
976 
977  auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
978 
979  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
980 
981  // Note that this one's osSuffix is ""
982  auto MAbi64 = makeMultilib("")
983  .gccSuffix("/64")
984  .includeSuffix("/64")
985  .flag("+mabi=n64")
986  .flag("-mabi=n32")
987  .flag("-m32");
988 
989  CSMipsMultilibs =
990  MultilibSet()
991  .Either(MArchMips16, MArchMicroMips, MArchDefault)
992  .Maybe(UCLibc)
993  .Either(SoftFloat, Nan2008, DefaultFloat)
994  .FilterOut("/micromips/nan2008")
995  .FilterOut("/mips16/nan2008")
996  .Either(BigEndian, LittleEndian)
997  .Maybe(MAbi64)
998  .FilterOut("/mips16.*/64")
999  .FilterOut("/micromips.*/64")
1000  .FilterOut(NonExistent)
1001  .setIncludeDirsCallback([](const Multilib &M) {
1002  std::vector<std::string> Dirs({"/include"});
1003  if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1004  Dirs.push_back(
1005  "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1006  else
1007  Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
1008  return Dirs;
1009  });
1010  }
1011 
1012  MultilibSet DebianMipsMultilibs;
1013  {
1014  Multilib MAbiN32 =
1015  Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
1016 
1017  Multilib M64 = Multilib()
1018  .gccSuffix("/64")
1019  .includeSuffix("/64")
1020  .flag("+m64")
1021  .flag("-m32")
1022  .flag("-mabi=n32");
1023 
1024  Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32");
1025 
1026  DebianMipsMultilibs =
1027  MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
1028  }
1029 
1030  // Sort candidates. Toolchain that best meets the directories tree goes first.
1031  // Then select the first toolchains matches command line flags.
1032  MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1033  if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1034  std::iter_swap(Candidates, Candidates + 1);
1035  for (const MultilibSet *Candidate : Candidates) {
1036  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1037  if (Candidate == &DebianMipsMultilibs)
1038  Result.BiarchSibling = Multilib();
1039  Result.Multilibs = *Candidate;
1040  return true;
1041  }
1042  }
1043  return false;
1044 }
1045 
1046 static bool findMipsAndroidMultilibs(vfs::FileSystem &VFS, StringRef Path,
1047  const Multilib::flags_list &Flags,
1048  FilterNonExistent &NonExistent,
1049  DetectedMultilibs &Result) {
1050 
1051  MultilibSet AndroidMipsMultilibs =
1052  MultilibSet()
1053  .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
1054  .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
1055  .FilterOut(NonExistent);
1056 
1057  MultilibSet AndroidMipselMultilibs =
1058  MultilibSet()
1059  .Either(Multilib().flag("+march=mips32"),
1060  Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1061  Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1062  .FilterOut(NonExistent);
1063 
1064  MultilibSet AndroidMips64elMultilibs =
1065  MultilibSet()
1066  .Either(
1067  Multilib().flag("+march=mips64r6"),
1068  Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
1069  Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1070  Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1071  .FilterOut(NonExistent);
1072 
1073  MultilibSet *MS = &AndroidMipsMultilibs;
1074  if (VFS.exists(Path + "/mips-r6"))
1075  MS = &AndroidMipselMultilibs;
1076  else if (VFS.exists(Path + "/32"))
1077  MS = &AndroidMips64elMultilibs;
1078  if (MS->select(Flags, Result.SelectedMultilib)) {
1079  Result.Multilibs = *MS;
1080  return true;
1081  }
1082  return false;
1083 }
1084 
1086  FilterNonExistent &NonExistent,
1087  DetectedMultilibs &Result) {
1088  // Musl toolchain multilibs
1089  MultilibSet MuslMipsMultilibs;
1090  {
1091  auto MArchMipsR2 = makeMultilib("")
1092  .osSuffix("/mips-r2-hard-musl")
1093  .flag("+EB")
1094  .flag("-EL")
1095  .flag("+march=mips32r2");
1096 
1097  auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1098  .flag("-EB")
1099  .flag("+EL")
1100  .flag("+march=mips32r2");
1101 
1102  MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1103 
1104  // Specify the callback that computes the include directories.
1105  MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1106  return std::vector<std::string>(
1107  {"/../sysroot" + M.osSuffix() + "/usr/include"});
1108  });
1109  }
1110  if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1111  Result.Multilibs = MuslMipsMultilibs;
1112  return true;
1113  }
1114  return false;
1115 }
1116 
1118  FilterNonExistent &NonExistent,
1119  DetectedMultilibs &Result) {
1120  // CodeScape MTI toolchain v1.2 and early.
1121  MultilibSet MtiMipsMultilibsV1;
1122  {
1123  auto MArchMips32 = makeMultilib("/mips32")
1124  .flag("+m32")
1125  .flag("-m64")
1126  .flag("-mmicromips")
1127  .flag("+march=mips32");
1128 
1129  auto MArchMicroMips = makeMultilib("/micromips")
1130  .flag("+m32")
1131  .flag("-m64")
1132  .flag("+mmicromips");
1133 
1134  auto MArchMips64r2 = makeMultilib("/mips64r2")
1135  .flag("-m32")
1136  .flag("+m64")
1137  .flag("+march=mips64r2");
1138 
1139  auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1140  "-march=mips64r2");
1141 
1142  auto MArchDefault = makeMultilib("")
1143  .flag("+m32")
1144  .flag("-m64")
1145  .flag("-mmicromips")
1146  .flag("+march=mips32r2");
1147 
1148  auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1149 
1150  auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1151 
1152  auto MAbi64 =
1153  makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1154 
1155  auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1156 
1157  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1158 
1159  auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1160 
1161  auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1162 
1163  MtiMipsMultilibsV1 =
1164  MultilibSet()
1165  .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1166  MArchDefault)
1167  .Maybe(UCLibc)
1168  .Maybe(Mips16)
1169  .FilterOut("/mips64/mips16")
1170  .FilterOut("/mips64r2/mips16")
1171  .FilterOut("/micromips/mips16")
1172  .Maybe(MAbi64)
1173  .FilterOut("/micromips/64")
1174  .FilterOut("/mips32/64")
1175  .FilterOut("^/64")
1176  .FilterOut("/mips16/64")
1177  .Either(BigEndian, LittleEndian)
1178  .Maybe(SoftFloat)
1179  .Maybe(Nan2008)
1180  .FilterOut(".*sof/nan2008")
1181  .FilterOut(NonExistent)
1182  .setIncludeDirsCallback([](const Multilib &M) {
1183  std::vector<std::string> Dirs({"/include"});
1184  if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1185  Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1186  else
1187  Dirs.push_back("/../../../../sysroot/usr/include");
1188  return Dirs;
1189  });
1190  }
1191 
1192  // CodeScape IMG toolchain starting from v1.3.
1193  MultilibSet MtiMipsMultilibsV2;
1194  {
1195  auto BeHard = makeMultilib("/mips-r2-hard")
1196  .flag("+EB")
1197  .flag("-msoft-float")
1198  .flag("-mnan=2008")
1199  .flag("-muclibc");
1200  auto BeSoft = makeMultilib("/mips-r2-soft")
1201  .flag("+EB")
1202  .flag("+msoft-float")
1203  .flag("-mnan=2008");
1204  auto ElHard = makeMultilib("/mipsel-r2-hard")
1205  .flag("+EL")
1206  .flag("-msoft-float")
1207  .flag("-mnan=2008")
1208  .flag("-muclibc");
1209  auto ElSoft = makeMultilib("/mipsel-r2-soft")
1210  .flag("+EL")
1211  .flag("+msoft-float")
1212  .flag("-mnan=2008")
1213  .flag("-mmicromips");
1214  auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1215  .flag("+EB")
1216  .flag("-msoft-float")
1217  .flag("+mnan=2008")
1218  .flag("-muclibc");
1219  auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1220  .flag("+EL")
1221  .flag("-msoft-float")
1222  .flag("+mnan=2008")
1223  .flag("-muclibc")
1224  .flag("-mmicromips");
1225  auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1226  .flag("+EB")
1227  .flag("-msoft-float")
1228  .flag("+mnan=2008")
1229  .flag("+muclibc");
1230  auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1231  .flag("+EL")
1232  .flag("-msoft-float")
1233  .flag("+mnan=2008")
1234  .flag("+muclibc");
1235  auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1236  .flag("+EB")
1237  .flag("-msoft-float")
1238  .flag("-mnan=2008")
1239  .flag("+muclibc");
1240  auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1241  .flag("+EL")
1242  .flag("-msoft-float")
1243  .flag("-mnan=2008")
1244  .flag("+muclibc");
1245  auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1246  .flag("+EL")
1247  .flag("-msoft-float")
1248  .flag("+mnan=2008")
1249  .flag("+mmicromips");
1250  auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1251  .flag("+EL")
1252  .flag("+msoft-float")
1253  .flag("-mnan=2008")
1254  .flag("+mmicromips");
1255 
1256  auto O32 =
1257  makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1258  auto N32 =
1259  makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1260  auto N64 =
1261  makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1262 
1263  MtiMipsMultilibsV2 =
1264  MultilibSet()
1265  .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1266  BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1267  ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1268  .Either(O32, N32, N64)
1269  .FilterOut(NonExistent)
1270  .setIncludeDirsCallback([](const Multilib &M) {
1271  return std::vector<std::string>({"/../../../../sysroot" +
1272  M.includeSuffix() +
1273  "/../usr/include"});
1274  })
1275  .setFilePathsCallback([](const Multilib &M) {
1276  return std::vector<std::string>(
1277  {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1278  });
1279  }
1280  for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1281  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1282  Result.Multilibs = *Candidate;
1283  return true;
1284  }
1285  }
1286  return false;
1287 }
1288 
1290  FilterNonExistent &NonExistent,
1291  DetectedMultilibs &Result) {
1292  // CodeScape IMG toolchain v1.2 and early.
1293  MultilibSet ImgMultilibsV1;
1294  {
1295  auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1296 
1297  auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1298 
1299  auto MAbi64 =
1300  makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1301 
1302  ImgMultilibsV1 =
1303  MultilibSet()
1304  .Maybe(Mips64r6)
1305  .Maybe(MAbi64)
1306  .Maybe(LittleEndian)
1307  .FilterOut(NonExistent)
1308  .setIncludeDirsCallback([](const Multilib &M) {
1309  return std::vector<std::string>(
1310  {"/include", "/../../../../sysroot/usr/include"});
1311  });
1312  }
1313 
1314  // CodeScape IMG toolchain starting from v1.3.
1315  MultilibSet ImgMultilibsV2;
1316  {
1317  auto BeHard = makeMultilib("/mips-r6-hard")
1318  .flag("+EB")
1319  .flag("-msoft-float")
1320  .flag("-mmicromips");
1321  auto BeSoft = makeMultilib("/mips-r6-soft")
1322  .flag("+EB")
1323  .flag("+msoft-float")
1324  .flag("-mmicromips");
1325  auto ElHard = makeMultilib("/mipsel-r6-hard")
1326  .flag("+EL")
1327  .flag("-msoft-float")
1328  .flag("-mmicromips");
1329  auto ElSoft = makeMultilib("/mipsel-r6-soft")
1330  .flag("+EL")
1331  .flag("+msoft-float")
1332  .flag("-mmicromips");
1333  auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1334  .flag("+EB")
1335  .flag("-msoft-float")
1336  .flag("+mmicromips");
1337  auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1338  .flag("+EB")
1339  .flag("+msoft-float")
1340  .flag("+mmicromips");
1341  auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1342  .flag("+EL")
1343  .flag("-msoft-float")
1344  .flag("+mmicromips");
1345  auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1346  .flag("+EL")
1347  .flag("+msoft-float")
1348  .flag("+mmicromips");
1349 
1350  auto O32 =
1351  makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1352  auto N32 =
1353  makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1354  auto N64 =
1355  makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1356 
1357  ImgMultilibsV2 =
1358  MultilibSet()
1359  .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1360  ElMicroHard, ElMicroSoft})
1361  .Either(O32, N32, N64)
1362  .FilterOut(NonExistent)
1363  .setIncludeDirsCallback([](const Multilib &M) {
1364  return std::vector<std::string>({"/../../../../sysroot" +
1365  M.includeSuffix() +
1366  "/../usr/include"});
1367  })
1368  .setFilePathsCallback([](const Multilib &M) {
1369  return std::vector<std::string>(
1370  {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1371  });
1372  }
1373  for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1374  if (Candidate->select(Flags, Result.SelectedMultilib)) {
1375  Result.Multilibs = *Candidate;
1376  return true;
1377  }
1378  }
1379  return false;
1380 }
1381 
1383  const llvm::Triple &TargetTriple,
1384  StringRef Path, const ArgList &Args,
1385  DetectedMultilibs &Result) {
1386  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1387 
1388  StringRef CPUName;
1389  StringRef ABIName;
1390  tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1391 
1392  llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1393 
1394  Multilib::flags_list Flags;
1395  addMultilibFlag(isMips32(TargetArch), "m32", Flags);
1396  addMultilibFlag(isMips64(TargetArch), "m64", Flags);
1397  addMultilibFlag(isMips16(Args), "mips16", Flags);
1398  addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1399  addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1400  CPUName == "mips32r5" || CPUName == "p5600",
1401  "march=mips32r2", Flags);
1402  addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1403  addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1404  addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1405  CPUName == "mips64r5" || CPUName == "octeon",
1406  "march=mips64r2", Flags);
1407  addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1408  addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1409  addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1410  addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008",
1411  Flags);
1412  addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1413  addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1414  addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1415  addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1416  addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1417  addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1418 
1419  if (TargetTriple.isAndroid())
1420  return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1421  Result);
1422 
1423  if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1424  TargetTriple.getOS() == llvm::Triple::Linux &&
1425  TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1426  return findMipsMuslMultilibs(Flags, NonExistent, Result);
1427 
1428  if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1429  TargetTriple.getOS() == llvm::Triple::Linux &&
1430  TargetTriple.getEnvironment() == llvm::Triple::GNU)
1431  return findMipsMtiMultilibs(Flags, NonExistent, Result);
1432 
1433  if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1434  TargetTriple.getOS() == llvm::Triple::Linux &&
1435  TargetTriple.getEnvironment() == llvm::Triple::GNU)
1436  return findMipsImgMultilibs(Flags, NonExistent, Result);
1437 
1438  if (findMipsCsMultilibs(Flags, NonExistent, Result))
1439  return true;
1440 
1441  // Fallback to the regular toolchain-tree structure.
1442  Multilib Default;
1443  Result.Multilibs.push_back(Default);
1444  Result.Multilibs.FilterOut(NonExistent);
1445 
1446  if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1447  Result.BiarchSibling = Multilib();
1448  return true;
1449  }
1450 
1451  return false;
1452 }
1453 
1454 static void findAndroidArmMultilibs(const Driver &D,
1455  const llvm::Triple &TargetTriple,
1456  StringRef Path, const ArgList &Args,
1457  DetectedMultilibs &Result) {
1458  // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1459  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1460  Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1461  .flag("+march=armv7-a")
1462  .flag("-mthumb");
1463  Multilib ThumbMultilib = makeMultilib("/thumb")
1464  .flag("-march=armv7-a")
1465  .flag("+mthumb");
1466  Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1467  .flag("+march=armv7-a")
1468  .flag("+mthumb");
1469  Multilib DefaultMultilib = makeMultilib("")
1470  .flag("-march=armv7-a")
1471  .flag("-mthumb");
1472  MultilibSet AndroidArmMultilibs =
1473  MultilibSet()
1474  .Either(ThumbMultilib, ArmV7Multilib,
1475  ArmV7ThumbMultilib, DefaultMultilib)
1476  .FilterOut(NonExistent);
1477 
1478  Multilib::flags_list Flags;
1479  llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1480  bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1481  bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1482  bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1483  bool IsThumbMode = IsThumbArch ||
1484  Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1485  (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::IK_THUMB);
1486  bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1487  (llvm::ARM::parseArchVersion(Arch) == 7 ||
1488  (IsArmArch && Arch == "" && IsV7SubArch));
1489  addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags);
1490  addMultilibFlag(IsThumbMode, "mthumb", Flags);
1491 
1492  if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1493  Result.Multilibs = AndroidArmMultilibs;
1494 }
1495 
1496 static bool findBiarchMultilibs(const Driver &D,
1497  const llvm::Triple &TargetTriple,
1498  StringRef Path, const ArgList &Args,
1499  bool NeedsBiarchSuffix,
1500  DetectedMultilibs &Result) {
1501  // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1502  // in what would normally be GCCInstallPath and put the 64-bit
1503  // libs in a subdirectory named 64. The simple logic we follow is that
1504  // *if* there is a subdirectory of the right name with crtbegin.o in it,
1505  // we use that. If not, and if not a biarch triple alias, we look for
1506  // crtbegin.o without the subdirectory.
1507 
1508  Multilib Default;
1509  Multilib Alt64 = Multilib()
1510  .gccSuffix("/64")
1511  .includeSuffix("/64")
1512  .flag("-m32")
1513  .flag("+m64")
1514  .flag("-mx32");
1515  Multilib Alt32 = Multilib()
1516  .gccSuffix("/32")
1517  .includeSuffix("/32")
1518  .flag("+m32")
1519  .flag("-m64")
1520  .flag("-mx32");
1521  Multilib Altx32 = Multilib()
1522  .gccSuffix("/x32")
1523  .includeSuffix("/x32")
1524  .flag("-m32")
1525  .flag("-m64")
1526  .flag("+mx32");
1527 
1528  // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1529  FilterNonExistent NonExistent(
1530  Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1531 
1532  // Determine default multilib from: 32, 64, x32
1533  // Also handle cases such as 64 on 32, 32 on 64, etc.
1534  enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1535  const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32;
1536  if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1537  Want = WANT64;
1538  else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1539  Want = WANT64;
1540  else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1541  Want = WANT32;
1542  else {
1543  if (TargetTriple.isArch32Bit())
1544  Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1545  else if (IsX32)
1546  Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1547  else
1548  Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1549  }
1550 
1551  if (Want == WANT32)
1552  Default.flag("+m32").flag("-m64").flag("-mx32");
1553  else if (Want == WANT64)
1554  Default.flag("-m32").flag("+m64").flag("-mx32");
1555  else if (Want == WANTX32)
1556  Default.flag("-m32").flag("-m64").flag("+mx32");
1557  else
1558  return false;
1559 
1560  Result.Multilibs.push_back(Default);
1561  Result.Multilibs.push_back(Alt64);
1562  Result.Multilibs.push_back(Alt32);
1563  Result.Multilibs.push_back(Altx32);
1564 
1565  Result.Multilibs.FilterOut(NonExistent);
1566 
1567  Multilib::flags_list Flags;
1568  addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1569  addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1570  addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1571 
1572  if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1573  return false;
1574 
1575  if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1576  Result.SelectedMultilib == Altx32)
1577  Result.BiarchSibling = Default;
1578 
1579  return true;
1580 }
1581 
1582 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1583 /// all subcommands; this relies on gcc translating the majority of
1584 /// command line options.
1585 
1586 /// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering.
1587 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1588  int RHSPatch,
1589  StringRef RHSPatchSuffix) const {
1590  if (Major != RHSMajor)
1591  return Major < RHSMajor;
1592  if (Minor != RHSMinor)
1593  return Minor < RHSMinor;
1594  if (Patch != RHSPatch) {
1595  // Note that versions without a specified patch sort higher than those with
1596  // a patch.
1597  if (RHSPatch == -1)
1598  return true;
1599  if (Patch == -1)
1600  return false;
1601 
1602  // Otherwise just sort on the patch itself.
1603  return Patch < RHSPatch;
1604  }
1605  if (PatchSuffix != RHSPatchSuffix) {
1606  // Sort empty suffixes higher.
1607  if (RHSPatchSuffix.empty())
1608  return true;
1609  if (PatchSuffix.empty())
1610  return false;
1611 
1612  // Provide a lexicographic sort to make this a total ordering.
1613  return PatchSuffix < RHSPatchSuffix;
1614  }
1615 
1616  // The versions are equal.
1617  return false;
1618 }
1619 
1620 /// \brief Parse a GCCVersion object out of a string of text.
1621 ///
1622 /// This is the primary means of forming GCCVersion objects.
1623 /*static*/
1625  const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1626  std::pair<StringRef, StringRef> First = VersionText.split('.');
1627  std::pair<StringRef, StringRef> Second = First.second.split('.');
1628 
1629  GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1630  if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
1631  return BadVersion;
1632  GoodVersion.MajorStr = First.first.str();
1633  if (First.second.empty())
1634  return GoodVersion;
1635  if (Second.first.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
1636  return BadVersion;
1637  GoodVersion.MinorStr = Second.first.str();
1638 
1639  // First look for a number prefix and parse that if present. Otherwise just
1640  // stash the entire patch string in the suffix, and leave the number
1641  // unspecified. This covers versions strings such as:
1642  // 5 (handled above)
1643  // 4.4
1644  // 4.4.0
1645  // 4.4.x
1646  // 4.4.2-rc4
1647  // 4.4.x-patched
1648  // And retains any patch number it finds.
1649  StringRef PatchText = GoodVersion.PatchSuffix = Second.second.str();
1650  if (!PatchText.empty()) {
1651  if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
1652  // Try to parse the number and any suffix.
1653  if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
1654  GoodVersion.Patch < 0)
1655  return BadVersion;
1656  GoodVersion.PatchSuffix = PatchText.substr(EndNumber);
1657  }
1658  }
1659 
1660  return GoodVersion;
1661 }
1662 
1663 static llvm::StringRef getGCCToolchainDir(const ArgList &Args) {
1664  const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1665  if (A)
1666  return A->getValue();
1667  return GCC_INSTALL_PREFIX;
1668 }
1669 
1670 /// \brief Initialize a GCCInstallationDetector from the driver.
1671 ///
1672 /// This performs all of the autodetection and sets up the various paths.
1673 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1674 ///
1675 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1676 /// should instead pull the target out of the driver. This is currently
1677 /// necessary because the driver doesn't store the final version of the target
1678 /// triple.
1680  const llvm::Triple &TargetTriple, const ArgList &Args,
1681  ArrayRef<std::string> ExtraTripleAliases) {
1682  llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
1683  ? TargetTriple.get64BitArchVariant()
1684  : TargetTriple.get32BitArchVariant();
1685  // The library directories which may contain GCC installations.
1686  SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
1687  // The compatible GCC triples for this particular architecture.
1688  SmallVector<StringRef, 16> CandidateTripleAliases;
1689  SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
1690  CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
1691  CandidateTripleAliases, CandidateBiarchLibDirs,
1692  CandidateBiarchTripleAliases);
1693 
1694  // Compute the set of prefixes for our search.
1695  SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
1696  D.PrefixDirs.end());
1697 
1698  StringRef GCCToolchainDir = getGCCToolchainDir(Args);
1699  if (GCCToolchainDir != "") {
1700  if (GCCToolchainDir.back() == '/')
1701  GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
1702 
1703  Prefixes.push_back(GCCToolchainDir);
1704  } else {
1705  // If we have a SysRoot, try that first.
1706  if (!D.SysRoot.empty()) {
1707  Prefixes.push_back(D.SysRoot);
1708  Prefixes.push_back(D.SysRoot + "/usr");
1709  }
1710 
1711  // Then look for gcc installed alongside clang.
1712  Prefixes.push_back(D.InstalledDir + "/..");
1713 
1714  // Then look for distribution supplied gcc installations.
1715  if (D.SysRoot.empty()) {
1716  // Look for RHEL devtoolsets.
1717  Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
1718  Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
1719  Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
1720  Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
1721  // And finally in /usr.
1722  Prefixes.push_back("/usr");
1723  }
1724  }
1725 
1726  // Try to respect gcc-config on Gentoo. However, do that only
1727  // if --gcc-toolchain is not provided or equal to the Gentoo install
1728  // in /usr. This avoids accidentally enforcing the system GCC version
1729  // when using a custom toolchain.
1730  if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") {
1731  for (StringRef CandidateTriple : ExtraTripleAliases) {
1732  if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
1733  return;
1734  }
1735  for (StringRef CandidateTriple : CandidateTripleAliases) {
1736  if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
1737  return;
1738  }
1739  for (StringRef CandidateTriple : CandidateBiarchTripleAliases) {
1740  if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
1741  return;
1742  }
1743  }
1744 
1745  // Loop over the various components which exist and select the best GCC
1746  // installation available. GCC installs are ranked by version number.
1747  Version = GCCVersion::Parse("0.0.0");
1748  for (const std::string &Prefix : Prefixes) {
1749  if (!D.getVFS().exists(Prefix))
1750  continue;
1751  for (StringRef Suffix : CandidateLibDirs) {
1752  const std::string LibDir = Prefix + Suffix.str();
1753  if (!D.getVFS().exists(LibDir))
1754  continue;
1755  for (StringRef Candidate : ExtraTripleAliases) // Try these first.
1756  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1757  for (StringRef Candidate : CandidateTripleAliases)
1758  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1759  }
1760  for (StringRef Suffix : CandidateBiarchLibDirs) {
1761  const std::string LibDir = Prefix + Suffix.str();
1762  if (!D.getVFS().exists(LibDir))
1763  continue;
1764  for (StringRef Candidate : CandidateBiarchTripleAliases)
1765  ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate,
1766  /*NeedsBiarchSuffix=*/ true);
1767  }
1768  }
1769 }
1770 
1771 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
1772  for (const auto &InstallPath : CandidateGCCInstallPaths)
1773  OS << "Found candidate GCC installation: " << InstallPath << "\n";
1774 
1775  if (!GCCInstallPath.empty())
1776  OS << "Selected GCC installation: " << GCCInstallPath << "\n";
1777 
1778  for (const auto &Multilib : Multilibs)
1779  OS << "Candidate multilib: " << Multilib << "\n";
1780 
1781  if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
1782  OS << "Selected multilib: " << SelectedMultilib << "\n";
1783 }
1784 
1786  if (BiarchSibling.hasValue()) {
1787  M = BiarchSibling.getValue();
1788  return true;
1789  }
1790  return false;
1791 }
1792 
1793 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
1794  const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
1795  SmallVectorImpl<StringRef> &LibDirs,
1796  SmallVectorImpl<StringRef> &TripleAliases,
1797  SmallVectorImpl<StringRef> &BiarchLibDirs,
1798  SmallVectorImpl<StringRef> &BiarchTripleAliases) {
1799  // Declare a bunch of static data sets that we'll select between below. These
1800  // are specifically designed to always refer to string literals to avoid any
1801  // lifetime or initialization issues.
1802  static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
1803  static const char *const AArch64Triples[] = {
1804  "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-linux-android",
1805  "aarch64-redhat-linux", "aarch64-suse-linux"};
1806  static const char *const AArch64beLibDirs[] = {"/lib"};
1807  static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
1808  "aarch64_be-linux-gnu"};
1809 
1810  static const char *const ARMLibDirs[] = {"/lib"};
1811  static const char *const ARMTriples[] = {"arm-linux-gnueabi",
1812  "arm-linux-androideabi"};
1813  static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
1814  "armv7hl-redhat-linux-gnueabi",
1815  "armv6hl-suse-linux-gnueabi",
1816  "armv7hl-suse-linux-gnueabi"};
1817  static const char *const ARMebLibDirs[] = {"/lib"};
1818  static const char *const ARMebTriples[] = {"armeb-linux-gnueabi",
1819  "armeb-linux-androideabi"};
1820  static const char *const ARMebHFTriples[] = {
1821  "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
1822 
1823  static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
1824  static const char *const X86_64Triples[] = {
1825  "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
1826  "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
1827  "x86_64-redhat-linux", "x86_64-suse-linux",
1828  "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
1829  "x86_64-slackware-linux", "x86_64-linux-android",
1830  "x86_64-unknown-linux"};
1831  static const char *const X32LibDirs[] = {"/libx32"};
1832  static const char *const X86LibDirs[] = {"/lib32", "/lib"};
1833  static const char *const X86Triples[] = {
1834  "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu",
1835  "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux",
1836  "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux",
1837  "i486-slackware-linux", "i686-montavista-linux", "i686-linux-android",
1838  "i586-linux-gnu"};
1839 
1840  static const char *const MIPSLibDirs[] = {"/lib"};
1841  static const char *const MIPSTriples[] = {"mips-linux-gnu", "mips-mti-linux",
1842  "mips-mti-linux-gnu",
1843  "mips-img-linux-gnu"};
1844  static const char *const MIPSELLibDirs[] = {"/lib"};
1845  static const char *const MIPSELTriples[] = {"mipsel-linux-gnu",
1846  "mips-img-linux-gnu"};
1847 
1848  static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
1849  static const char *const MIPS64Triples[] = {
1850  "mips64-linux-gnu", "mips-mti-linux-gnu", "mips-img-linux-gnu",
1851  "mips64-linux-gnuabi64"};
1852  static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
1853  static const char *const MIPS64ELTriples[] = {
1854  "mips64el-linux-gnu", "mips-mti-linux-gnu", "mips-img-linux-gnu",
1855  "mips64el-linux-gnuabi64"};
1856 
1857  static const char *const MIPSELAndroidLibDirs[] = {"/lib", "/libr2",
1858  "/libr6"};
1859  static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
1860  static const char *const MIPS64ELAndroidLibDirs[] = {"/lib64", "/lib",
1861  "/libr2", "/libr6"};
1862  static const char *const MIPS64ELAndroidTriples[] = {
1863  "mips64el-linux-android"};
1864 
1865  static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
1866  static const char *const PPCTriples[] = {
1867  "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
1868  "powerpc-suse-linux", "powerpc-montavista-linuxspe"};
1869  static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
1870  static const char *const PPC64Triples[] = {
1871  "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
1872  "powerpc64-suse-linux", "ppc64-redhat-linux"};
1873  static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
1874  static const char *const PPC64LETriples[] = {
1875  "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
1876  "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
1877 
1878  static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
1879  static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
1880  "sparcv8-linux-gnu"};
1881  static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
1882  static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
1883  "sparcv9-linux-gnu"};
1884 
1885  static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
1886  static const char *const SystemZTriples[] = {
1887  "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
1888  "s390x-suse-linux", "s390x-redhat-linux"};
1889 
1890  // Solaris.
1891  static const char *const SolarisSPARCLibDirs[] = {"/gcc"};
1892  static const char *const SolarisSPARCTriples[] = {"sparc-sun-solaris2.11",
1893  "i386-pc-solaris2.11"};
1894 
1895  using std::begin;
1896  using std::end;
1897 
1898  if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1899  LibDirs.append(begin(SolarisSPARCLibDirs), end(SolarisSPARCLibDirs));
1900  TripleAliases.append(begin(SolarisSPARCTriples), end(SolarisSPARCTriples));
1901  return;
1902  }
1903 
1904  switch (TargetTriple.getArch()) {
1905  case llvm::Triple::aarch64:
1906  LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
1907  TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
1908  BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
1909  BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
1910  break;
1911  case llvm::Triple::aarch64_be:
1912  LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
1913  TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
1914  BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
1915  BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
1916  break;
1917  case llvm::Triple::arm:
1918  case llvm::Triple::thumb:
1919  LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
1920  if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
1921  TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
1922  } else {
1923  TripleAliases.append(begin(ARMTriples), end(ARMTriples));
1924  }
1925  break;
1926  case llvm::Triple::armeb:
1927  case llvm::Triple::thumbeb:
1928  LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
1929  if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
1930  TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
1931  } else {
1932  TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
1933  }
1934  break;
1935  case llvm::Triple::x86_64:
1936  LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
1937  TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1938  // x32 is always available when x86_64 is available, so adding it as
1939  // secondary arch with x86_64 triples
1940  if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) {
1941  BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
1942  BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1943  } else {
1944  BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
1945  BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
1946  }
1947  break;
1948  case llvm::Triple::x86:
1949  LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
1950  // MCU toolchain is 32 bit only and its triple alias is TargetTriple
1951  // itself, which will be appended below.
1952  if (!TargetTriple.isOSIAMCU()) {
1953  TripleAliases.append(begin(X86Triples), end(X86Triples));
1954  BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
1955  BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1956  }
1957  break;
1958  case llvm::Triple::mips:
1959  LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
1960  TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1961  BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
1962  BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
1963  break;
1964  case llvm::Triple::mipsel:
1965  if (TargetTriple.isAndroid()) {
1966  LibDirs.append(begin(MIPSELAndroidLibDirs), end(MIPSELAndroidLibDirs));
1967  TripleAliases.append(begin(MIPSELAndroidTriples),
1968  end(MIPSELAndroidTriples));
1969  BiarchLibDirs.append(begin(MIPS64ELAndroidLibDirs),
1970  end(MIPS64ELAndroidLibDirs));
1971  BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
1972  end(MIPS64ELAndroidTriples));
1973 
1974  } else {
1975  LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
1976  TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
1977  TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1978  BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
1979  BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
1980  }
1981  break;
1982  case llvm::Triple::mips64:
1983  LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
1984  TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
1985  BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
1986  BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1987  break;
1988  case llvm::Triple::mips64el:
1989  if (TargetTriple.isAndroid()) {
1990  LibDirs.append(begin(MIPS64ELAndroidLibDirs),
1991  end(MIPS64ELAndroidLibDirs));
1992  TripleAliases.append(begin(MIPS64ELAndroidTriples),
1993  end(MIPS64ELAndroidTriples));
1994  BiarchLibDirs.append(begin(MIPSELAndroidLibDirs),
1995  end(MIPSELAndroidLibDirs));
1996  BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
1997  end(MIPSELAndroidTriples));
1998 
1999  } else {
2000  LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2001  TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2002  BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2003  BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2004  BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2005  }
2006  break;
2007  case llvm::Triple::ppc:
2008  LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2009  TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2010  BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2011  BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2012  break;
2013  case llvm::Triple::ppc64:
2014  LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2015  TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2016  BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2017  BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2018  break;
2019  case llvm::Triple::ppc64le:
2020  LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2021  TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2022  break;
2023  case llvm::Triple::sparc:
2024  case llvm::Triple::sparcel:
2025  LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2026  TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2027  BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2028  BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2029  break;
2030  case llvm::Triple::sparcv9:
2031  LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2032  TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2033  BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2034  BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2035  break;
2036  case llvm::Triple::systemz:
2037  LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2038  TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2039  break;
2040  default:
2041  // By default, just rely on the standard lib directories and the original
2042  // triple.
2043  break;
2044  }
2045 
2046  // Always append the drivers target triple to the end, in case it doesn't
2047  // match any of our aliases.
2048  TripleAliases.push_back(TargetTriple.str());
2049 
2050  // Also include the multiarch variant if it's different.
2051  if (TargetTriple.str() != BiarchTriple.str())
2052  BiarchTripleAliases.push_back(BiarchTriple.str());
2053 }
2054 
2055 void Generic_GCC::GCCInstallationDetector::scanLibDirForGCCTripleSolaris(
2056  const llvm::Triple &TargetArch, const llvm::opt::ArgList &Args,
2057  const std::string &LibDir, StringRef CandidateTriple,
2058  bool NeedsBiarchSuffix) {
2059  // Solaris is a special case. The GCC installation is under
2060  // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/, so we
2061  // need to iterate twice.
2062  std::error_code EC;
2063  for (vfs::directory_iterator LI = D.getVFS().dir_begin(LibDir, EC), LE;
2064  !EC && LI != LE; LI = LI.increment(EC)) {
2065  StringRef VersionText = llvm::sys::path::filename(LI->getName());
2066  GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2067 
2068  if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2069  if (!CandidateGCCInstallPaths.insert(LI->getName()).second)
2070  continue; // Saw this path before; no need to look at it again.
2071  if (CandidateVersion.isOlderThan(4, 1, 1))
2072  continue;
2073  if (CandidateVersion <= Version)
2074  continue;
2075 
2076  GCCInstallPath =
2077  LibDir + "/" + VersionText.str() + "/lib/gcc/" + CandidateTriple.str();
2078  if (!D.getVFS().exists(GCCInstallPath))
2079  continue;
2080 
2081  // If we make it here there has to be at least one GCC version, let's just
2082  // use the latest one.
2083  std::error_code EEC;
2085  LLI = D.getVFS().dir_begin(GCCInstallPath, EEC),
2086  LLE;
2087  !EEC && LLI != LLE; LLI = LLI.increment(EEC)) {
2088 
2089  StringRef SubVersionText = llvm::sys::path::filename(LLI->getName());
2090  GCCVersion CandidateSubVersion = GCCVersion::Parse(SubVersionText);
2091 
2092  if (CandidateSubVersion > Version)
2093  Version = CandidateSubVersion;
2094  }
2095 
2096  GCCTriple.setTriple(CandidateTriple);
2097 
2098  GCCInstallPath += "/" + Version.Text;
2099  GCCParentLibPath = GCCInstallPath + "/../../../../";
2100 
2101  IsValid = true;
2102  }
2103 }
2104 
2105 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2106  const llvm::Triple &TargetTriple, const ArgList &Args,
2107  StringRef Path, bool NeedsBiarchSuffix) {
2108  llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2109  DetectedMultilibs Detected;
2110 
2111  // Android standalone toolchain could have multilibs for ARM and Thumb.
2112  // Debian mips multilibs behave more like the rest of the biarch ones,
2113  // so handle them there
2114  if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2115  // It should also work without multilibs in a simplified toolchain.
2116  findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2117  } else if (tools::isMipsArch(TargetArch)) {
2118  if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2119  return false;
2120  } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2121  NeedsBiarchSuffix, Detected)) {
2122  return false;
2123  }
2124 
2125  Multilibs = Detected.Multilibs;
2126  SelectedMultilib = Detected.SelectedMultilib;
2127  BiarchSibling = Detected.BiarchSibling;
2128 
2129  return true;
2130 }
2131 
2132 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2133  const llvm::Triple &TargetTriple, const ArgList &Args,
2134  const std::string &LibDir, StringRef CandidateTriple,
2135  bool NeedsBiarchSuffix) {
2136  if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2137  scanLibDirForGCCTripleSolaris(TargetTriple, Args, LibDir, CandidateTriple,
2138  NeedsBiarchSuffix);
2139  return;
2140  }
2141 
2142  llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2143  // Locations relative to the system lib directory where GCC's triple-specific
2144  // directories might reside.
2145  struct GCCLibSuffix {
2146  // Path from system lib directory to GCC triple-specific directory.
2147  std::string LibSuffix;
2148  // Path from GCC triple-specific directory back to system lib directory.
2149  // This is one '..' component per component in LibSuffix.
2150  StringRef ReversePath;
2151  // Whether this library suffix is relevant for the triple.
2152  bool Active;
2153  } Suffixes[] = {
2154  // This is the normal place.
2155  {"gcc/" + CandidateTriple.str(), "../..", true},
2156 
2157  // Debian puts cross-compilers in gcc-cross.
2158  {"gcc-cross/" + CandidateTriple.str(), "../..", true},
2159 
2160  // The Freescale PPC SDK has the gcc libraries in
2161  // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2162  // this on Freescale triples, though, since some systems put a *lot* of
2163  // files in that location, not just GCC installation data.
2164  {CandidateTriple.str(), "..",
2165  TargetTriple.getVendor() == llvm::Triple::Freescale},
2166 
2167  // Natively multiarch systems sometimes put the GCC triple-specific
2168  // directory within their multiarch lib directory, resulting in the
2169  // triple appearing twice.
2170  {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..", true},
2171 
2172  // Deal with cases (on Ubuntu) where the system architecture could be i386
2173  // but the GCC target architecture could be (say) i686.
2174  // FIXME: It may be worthwhile to generalize this and look for a second
2175  // triple.
2176  {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..",
2177  TargetArch == llvm::Triple::x86}
2178  };
2179 
2180  for (auto &Suffix : Suffixes) {
2181  if (!Suffix.Active)
2182  continue;
2183 
2184  StringRef LibSuffix = Suffix.LibSuffix;
2185  std::error_code EC;
2187  LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2188  LE;
2189  !EC && LI != LE; LI = LI.increment(EC)) {
2190  StringRef VersionText = llvm::sys::path::filename(LI->getName());
2191  GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2192  if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2193  if (!CandidateGCCInstallPaths.insert(LI->getName()).second)
2194  continue; // Saw this path before; no need to look at it again.
2195  if (CandidateVersion.isOlderThan(4, 1, 1))
2196  continue;
2197  if (CandidateVersion <= Version)
2198  continue;
2199 
2200  if (!ScanGCCForMultilibs(TargetTriple, Args, LI->getName(),
2201  NeedsBiarchSuffix))
2202  continue;
2203 
2204  Version = CandidateVersion;
2205  GCCTriple.setTriple(CandidateTriple);
2206  // FIXME: We hack together the directory name here instead of
2207  // using LI to ensure stable path separators across Windows and
2208  // Linux.
2209  GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2210  GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2211  IsValid = true;
2212  }
2213  }
2214 }
2215 
2216 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2217  const llvm::Triple &TargetTriple, const ArgList &Args,
2218  StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2219  llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2220  D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" +
2221  CandidateTriple.str());
2222  if (File) {
2224  File.get()->getBuffer().split(Lines, "\n");
2225  for (StringRef Line : Lines) {
2226  Line = Line.trim();
2227  // CURRENT=triple-version
2228  if (Line.consume_front("CURRENT=")) {
2229  const std::pair<StringRef, StringRef> ActiveVersion =
2230  Line.rsplit('-');
2231  // Note: Strictly speaking, we should be reading
2232  // /etc/env.d/gcc/${CURRENT} now. However, the file doesn't
2233  // contain anything new or especially useful to us.
2234  const std::string GentooPath = D.SysRoot + "/usr/lib/gcc/" +
2235  ActiveVersion.first.str() + "/" +
2236  ActiveVersion.second.str();
2237  if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2238  if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2239  NeedsBiarchSuffix))
2240  return false;
2241 
2242  Version = GCCVersion::Parse(ActiveVersion.second);
2243  GCCInstallPath = GentooPath;
2244  GCCParentLibPath = GentooPath + "/../../..";
2245  GCCTriple.setTriple(ActiveVersion.first);
2246  IsValid = true;
2247  return true;
2248  }
2249  }
2250  }
2251  }
2252 
2253  return false;
2254 }
2255 
2256 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2257  const ArgList &Args)
2258  : ToolChain(D, Triple, Args), GCCInstallation(D),
2259  CudaInstallation(D, Triple, Args) {
2260  getProgramPaths().push_back(getDriver().getInstalledDir());
2261  if (getDriver().getInstalledDir() != getDriver().Dir)
2262  getProgramPaths().push_back(getDriver().Dir);
2263 }
2264 
2266 
2268  switch (AC) {
2270  if (!Preprocess)
2271  Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2272  return Preprocess.get();
2274  if (!Compile)
2275  Compile.reset(new tools::gcc::Compiler(*this));
2276  return Compile.get();
2277  default:
2278  return ToolChain::getTool(AC);
2279  }
2280 }
2281 
2283  return new tools::gnutools::Assembler(*this);
2284 }
2285 
2286 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2287 
2288 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2289  // Print the information about how we detected the GCC installation.
2290  GCCInstallation.print(OS);
2291  CudaInstallation.print(OS);
2292 }
2293 
2294 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
2295  return getArch() == llvm::Triple::x86_64;
2296 }
2297 
2299  switch (getArch()) {
2300  case llvm::Triple::x86_64:
2301  return getTriple().isOSWindows();
2302  case llvm::Triple::ppc64:
2303  case llvm::Triple::ppc64le:
2304  return !getTriple().isOSBinFormatMachO() && !getTriple().isMacOSX();
2305  case llvm::Triple::mips64:
2306  case llvm::Triple::mips64el:
2307  return true;
2308  default:
2309  return false;
2310  }
2311 }
2312 
2313 bool Generic_GCC::isPIEDefault() const { return false; }
2314 
2316  return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2317 }
2318 
2320  switch (getTriple().getArch()) {
2321  case llvm::Triple::x86:
2322  case llvm::Triple::x86_64:
2323  case llvm::Triple::aarch64:
2324  case llvm::Triple::aarch64_be:
2325  case llvm::Triple::arm:
2326  case llvm::Triple::armeb:
2327  case llvm::Triple::avr:
2328  case llvm::Triple::bpfel:
2329  case llvm::Triple::bpfeb:
2330  case llvm::Triple::thumb:
2331  case llvm::Triple::thumbeb:
2332  case llvm::Triple::ppc:
2333  case llvm::Triple::ppc64:
2334  case llvm::Triple::ppc64le:
2335  case llvm::Triple::systemz:
2336  case llvm::Triple::mips:
2337  case llvm::Triple::mipsel:
2338  return true;
2339  case llvm::Triple::mips64:
2340  case llvm::Triple::mips64el:
2341  // Enabled for Debian and Android mips64/mipsel, as they can precisely
2342  // identify the ABI in use (Debian) or only use N64 for MIPS64 (Android).
2343  // Other targets are unable to distinguish N32 from N64.
2344  if (getTriple().getEnvironment() == llvm::Triple::GNUABI64 ||
2345  getTriple().isAndroid())
2346  return true;
2347  return false;
2348  default:
2349  return false;
2350  }
2351 }
2352 
2353 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
2354  ArgStringList &CC1Args) const {
2355  if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
2356  DriverArgs.hasArg(options::OPT_nostdincxx))
2357  return;
2358 
2359  switch (GetCXXStdlibType(DriverArgs)) {
2360  case ToolChain::CST_Libcxx: {
2361  std::string Path = findLibCxxIncludePath();
2362  if (!Path.empty())
2363  addSystemInclude(DriverArgs, CC1Args, Path);
2364  break;
2365  }
2366 
2368  addLibStdCxxIncludePaths(DriverArgs, CC1Args);
2369  break;
2370  }
2371 }
2372 
2374  // FIXME: The Linux behavior would probaby be a better approach here.
2375  return getDriver().SysRoot + "/usr/include/c++/v1";
2376 }
2377 
2378 void
2379 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2380  llvm::opt::ArgStringList &CC1Args) const {
2381  // By default, we don't assume we know where libstdc++ might be installed.
2382  // FIXME: If we have a valid GCCInstallation, use it.
2383 }
2384 
2385 /// \brief Helper to add the variant paths of a libstdc++ installation.
2387  Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple,
2388  StringRef TargetMultiarchTriple, Twine IncludeSuffix,
2389  const ArgList &DriverArgs, ArgStringList &CC1Args) const {
2390  if (!getVFS().exists(Base + Suffix))
2391  return false;
2392 
2393  addSystemInclude(DriverArgs, CC1Args, Base + Suffix);
2394 
2395  // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If
2396  // that path exists or we have neither a GCC nor target multiarch triple, use
2397  // this vanilla search path.
2398  if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) ||
2399  getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) {
2400  addSystemInclude(DriverArgs, CC1Args,
2401  Base + Suffix + "/" + GCCTriple + IncludeSuffix);
2402  } else {
2403  // Otherwise try to use multiarch naming schemes which have normalized the
2404  // triples and put the triple before the suffix.
2405  //
2406  // GCC surprisingly uses *both* the GCC triple with a multilib suffix and
2407  // the target triple, so we support that here.
2408  addSystemInclude(DriverArgs, CC1Args,
2409  Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix);
2410  addSystemInclude(DriverArgs, CC1Args,
2411  Base + "/" + TargetMultiarchTriple + Suffix);
2412  }
2413 
2414  addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward");
2415  return true;
2416 }
2417 
2418 llvm::opt::DerivedArgList *
2419 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
2420  Action::OffloadKind DeviceOffloadKind) const {
2421 
2422  // If this tool chain is used for an OpenMP offloading device we have to make
2423  // sure we always generate a shared library regardless of the commands the
2424  // user passed to the host. This is required because the runtime library
2425  // is required to load the device image dynamically at run time.
2426  if (DeviceOffloadKind == Action::OFK_OpenMP) {
2427  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
2428  const OptTable &Opts = getDriver().getOpts();
2429 
2430  // Request the shared library. Given that these options are decided
2431  // implicitly, they do not refer to any base argument.
2432  DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
2433  DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
2434 
2435  // Filter all the arguments we don't care passing to the offloading
2436  // toolchain as they can mess up with the creation of a shared library.
2437  for (auto *A : Args) {
2438  switch ((options::ID)A->getOption().getID()) {
2439  default:
2440  DAL->append(A);
2441  break;
2442  case options::OPT_shared:
2443  case options::OPT_dynamic:
2444  case options::OPT_static:
2445  case options::OPT_fPIC:
2446  case options::OPT_fno_PIC:
2447  case options::OPT_fpic:
2448  case options::OPT_fno_pic:
2449  case options::OPT_fPIE:
2450  case options::OPT_fno_PIE:
2451  case options::OPT_fpie:
2452  case options::OPT_fno_pie:
2453  break;
2454  }
2455  }
2456  return DAL;
2457  }
2458  return nullptr;
2459 }
2460 
2461 void Generic_ELF::anchor() {}
2462 
2463 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
2464  ArgStringList &CC1Args,
2465  Action::OffloadKind) const {
2467  bool UseInitArrayDefault =
2468  getTriple().getArch() == llvm::Triple::aarch64 ||
2469  getTriple().getArch() == llvm::Triple::aarch64_be ||
2470  (getTriple().getOS() == llvm::Triple::Linux &&
2471  (!V.isOlderThan(4, 7, 0) || getTriple().isAndroid())) ||
2472  getTriple().getOS() == llvm::Triple::NaCl ||
2473  (getTriple().getVendor() == llvm::Triple::MipsTechnologies &&
2474  !getTriple().hasEnvironment()) ||
2475  getTriple().getOS() == llvm::Triple::Solaris;
2476 
2477  if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
2478  options::OPT_fno_use_init_array, UseInitArrayDefault))
2479  CC1Args.push_back("-fuse-init-array");
2480 }
MultilibSet & Either(const Multilib &M1, const Multilib &M2)
Add a set of mutually incompatible Multilib segments.
Definition: Multilib.cpp:155
MultilibSet & Maybe(const Multilib &M)
Add an optional Multilib segment.
Definition: Multilib.cpp:145
const Driver & getDriver() const
Definition: Compilation.h:117
const llvm::Triple & getTriple() const
Definition: ToolChain.h:144
const std::string & includeSuffix() const
Get the include directory suffix.
Definition: Multilib.h:61
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: Linux.cpp:813
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:262
Tool * buildLinker() const override
Definition: Gnu.cpp:2286
const char * getSystemZTargetCPU(const llvm::opt::ArgList &Args)
prefix_list PrefixDirs
Definition: Driver.h:143
const char * getSparcAsmModeForCPU(llvm::StringRef Name, const llvm::Triple &Triple)
bool shouldUseFPXX(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef CPUName, StringRef ABIName, mips::FloatABI FloatABI)
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:579
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:678
Tool * getTool(Action::ActionClass AC) const override
Definition: Gnu.cpp:2267
llvm::Optional< Multilib > BiarchSibling
On Biarch systems, this corresponds to the default multilib when targeting the non-default multilib...
Definition: Gnu.h:30
static llvm::StringRef getGCCToolchainDir(const ArgList &Args)
Definition: Gnu.cpp:1663
const std::string & osSuffix() const
Get the detected os path suffix for the multi-arch target variant.
Definition: Multilib.h:51
static GCCVersion Parse(StringRef VersionText)
Parse a GCCVersion object out of a string of text.
Definition: Gnu.cpp:1624
static bool findMipsAndroidMultilibs(vfs::FileSystem &VFS, StringRef Path, const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1046
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:280
std::string DyldPrefix
Dynamic loader prefix, if present.
Definition: Driver.h:149
bool canTypeBeUserSpecified(ID Id)
canTypeBeUserSpecified - Can this type be specified on the command line (by the type name); this is u...
Definition: Types.cpp:80
void AddRunTimeLibs(const ToolChain &TC, const Driver &D, llvm::opt::ArgStringList &CmdArgs, const llvm::opt::ArgList &Args)
bool isFilename() const
Definition: InputInfo.h:76
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:116
Struct to store and manipulate GCC versions.
Definition: Gnu.h:157
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:153
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:201
virtual directory_iterator dir_begin(const Twine &Dir, std::error_code &EC)=0
Get a directory_iterator for Dir.
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
types::ID getType() const
Definition: Action.h:132
std::string PatchSuffix
Any textual suffix on the patch number.
Definition: Gnu.h:168
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:174
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: Gnu.cpp:2313
The virtual file system interface.
Multilib & flag(StringRef F)
Add a flag to the flags list Flag must be a flag accepted by the driver with its leading '-' removed...
Definition: Multilib.h:81
std::string GetTemporaryPath(StringRef Prefix, StringRef Suffix) const
GetTemporaryPath - Return the pathname of a temporary file to use as part of compilation; the file wi...
Definition: Driver.cpp:3755
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
static void linkXRayRuntimeDeps(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Gnu.cpp:343
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:168
GCCInstallationDetector GCCInstallation
Definition: Gnu.h:277
path_list & getProgramPaths()
Definition: ToolChain.h:175
static Multilib makeMultilib(StringRef commonSuffix)
Definition: Gnu.cpp:951
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
virtual void addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:2379
virtual std::string getDynamicLinker(const llvm::opt::ArgList &Args) const
Definition: Linux.cpp:413
const std::string & gccSuffix() const
Get the detected GCC installation path suffix for the multi-arch target variant.
Definition: Multilib.h:41
virtual std::string findLibCxxIncludePath() const
Definition: Gnu.cpp:2373
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)
static bool isMips64(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:933
Action - Represent an abstract compilation step to perform.
Definition: Action.h:45
directory_iterator & increment(std::error_code &EC)
Equivalent to operator++, with an error code.
bool isOlderThan(int RHSMajor, int RHSMinor, int RHSPatch, StringRef RHSPatchSuffix=StringRef()) const
Generic_GCC - A tool chain using the 'gcc' command to perform all subcommands; this relies on gcc tra...
Definition: Gnu.cpp:1587
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:23
static bool isMipsEL(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:937
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:170
MultilibSet & setIncludeDirsCallback(IncludeDirsFunc F)
Definition: Multilib.h:164
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, bool IsThinLTO, const Driver &D)
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:651
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:65
const Driver & getDriver() const
Definition: ToolChain.h:142
bool hasMipsAbiArg(const llvm::opt::ArgList &Args, const char *Value)
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:173
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
bool isSaveTempsEnabled() const
Definition: Driver.h:308
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:404
static bool isMips16(const ArgList &Args)
Definition: Gnu.cpp:941
CudaInstallationDetector CudaInstallation
Definition: Gnu.h:278
static bool isSoftFloatABI(const ArgList &Args)
Definition: Gnu.cpp:904
static void addMultilibFlag(bool Enabled, const char *const Flag, std::vector< std::string > &Flags)
Flag must be a flag accepted by the driver with its leading '-' removed,
Definition: Gnu.cpp:917
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:2353
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:39
bool getBiarchSibling(Multilib &M) const
Get the biarch sibling multilib (if it exists).
Definition: Gnu.cpp:1785
static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1085
bool isPICDefault() const override
Test whether this toolchain defaults to PIC.
Definition: Gnu.cpp:2298
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input)
void push_back(const Multilib &M)
Add a completed Multilib to the set.
Definition: Multilib.cpp:235
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:189
This corresponds to a single GCC Multilib, or a segment of one controlled by a command line flag...
Definition: Multilib.h:25
static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1117
Tool * buildAssembler() const override
Definition: Gnu.cpp:2282
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
bool isHostOffloading(OffloadKind OKind) const
Check if this action have any offload kinds.
Definition: Action.h:187
vfs::FileSystem & getVFS() const
Definition: Driver.h:284
static bool forwardToGCC(const Option &O)
Definition: Gnu.cpp:37
bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const override
IsUnwindTablesDefault - Does this tool chain use -funwind-tables by default.
Definition: Gnu.cpp:2294
static const char * getLDMOption(const llvm::Triple &T, const ArgList &Args)
Definition: Gnu.cpp:354
const char * getFilename() const
Definition: InputInfo.h:84
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
void printVerboseInfo(raw_ostream &OS) const override
Dispatch to the specific toolchain for verbose printing.
Definition: Gnu.cpp:2288
static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1289
AnnotatedLine & Line
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:44
const_offload_toolchains_range getOffloadToolChains() const
Definition: Compilation.h:134
mips::FloatABI getMipsFloatABI(const Driver &D, const llvm::opt::ArgList &Args)
bool isMipsArch(llvm::Triple::ArchType Arch)
Definition: Mips.cpp:23
std::string InstalledDir
The path to the installed clang directory, if any.
Definition: Driver.h:133
bool isUCLibc(const llvm::opt::ArgList &Args)
static bool isMips32(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:929
void print(raw_ostream &OS) const
Print information about the detected CUDA installation.
Definition: Cuda.cpp:200
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:487
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:598
void appendEBLinkFlags(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const llvm::Triple &Triple)
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:925
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:647
static bool findBiarchMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, bool NeedsBiarchSuffix, DetectedMultilibs &Result)
Definition: Gnu.cpp:1496
bool isPICDefaultForced() const override
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
Definition: Gnu.cpp:2315
Generic_GCC(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Gnu.cpp:2256
StringRef Name
Definition: USRFinder.cpp:123
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, bool Shared=false) const
Definition: ToolChain.cpp:331
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:146
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
Defines the virtual file system interface vfs::FileSystem.
static bool addXRayRuntime(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs)
Definition: Gnu.cpp:331
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:2463
static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:955
bool IsIntegratedAssemblerDefault() const override
IsIntegratedAssemblerDefault - Does this tool chain enable -integrated-as by default.
Definition: Gnu.cpp:2319
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
bool exists(const Twine &Path)
Check whether a file exists. Provided for convenience.
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:2386
std::string MajorStr
The text of the parsed major, and major+minor versions.
Definition: Gnu.h:165
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:2419
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:34
llvm::ErrorOr< std::unique_ptr< llvm::MemoryBuffer > > getBufferForFile(const Twine &Name, int64_t FileSize=-1, bool RequiresNullTerminator=true, bool IsVolatile=false)
This is a convenience method that opens a file, gets its content and then closes the file...
bool findMIPSMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const llvm::opt::ArgList &Args, DetectedMultilibs &Result)
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:484
StringRef getGnuCompatibleMipsABIName(StringRef ABI)
Definition: Mips.cpp:138
bool isDefault() const
Check whether the default is selected.
Definition: Multilib.h:95
const GCCVersion & getVersion() const
Get the detected GCC version string.
Definition: Gnu.h:239
An input iterator over the entries in a virtual path, similar to llvm::sys::fs::directory_iterator.
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:190
bool isNothing() const
Definition: InputInfo.h:75
MultilibSet & FilterOut(FilterCallback F)
Filter out some subset of the Multilibs using a user defined callback.
Definition: Multilib.cpp:215
static void AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C, const InputInfo &Output, const InputInfoList &Inputs, const ArgList &Args, ArgStringList &CmdArgs, const JobAction &JA)
Add OpenMP linker script arguments at the end of the argument list so that the fat binary is built by...
Definition: Gnu.cpp:212
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:666
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:216
vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:90
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:1679
const std::string & getCCCGenericGCCName() const
Name to use when invoking gcc/g++.
Definition: Driver.h:278
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:23
std::vector< std::string > flags_list
Definition: Multilib.h:27
void print(raw_ostream &OS) const
Print information about the detected GCC installation.
Definition: Gnu.cpp:1771
bool select(const Multilib::flags_list &Flags, Multilib &M) const
Pick the best multilib in the set,.
Definition: Multilib.cpp:247
std::vector< std::string > ExtraOpts
Definition: Linux.h:46
static bool isMicroMips(const ArgList &Args)
Definition: Gnu.cpp:946
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:148
int Major
The parsed major, minor, and patch numbers.
Definition: Gnu.h:162
static void findAndroidArmMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1454
std::string GetLinkerPath() const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name...
Definition: ToolChain.cpp:375
unsigned size() const
Definition: Multilib.h:159
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:367
Multilib SelectedMultilib
The primary multilib appropriate for the given flags.
Definition: Gnu.h:26
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:50