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 "Arch/ARM.h"
12 #include "Arch/Mips.h"
13 #include "Arch/PPC.h"
14 #include "Arch/RISCV.h"
15 #include "Arch/Sparc.h"
16 #include "Arch/SystemZ.h"
17 #include "CommonArgs.h"
18 #include "Linux.h"
19 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
20 #include "clang/Driver/Compilation.h"
21 #include "clang/Driver/Driver.h"
22 #include "clang/Driver/DriverDiagnostic.h"
23 #include "clang/Driver/Options.h"
24 #include "clang/Driver/Tool.h"
25 #include "llvm/Option/ArgList.h"
26 #include "llvm/Support/CodeGen.h"
27 #include "llvm/Support/Path.h"
28 #include "llvm/Support/TargetParser.h"
29 #include "llvm/Support/VirtualFileSystem.h"
30 #include <system_error>
31
32 using namespace clang::driver;
33 using namespace clang::driver::toolchains;
34 using namespace clang;
35 using namespace llvm::opt;
36
anchor()37 void tools::GnuTool::anchor() {}
38
forwardToGCC(const Option & O)39 static bool forwardToGCC(const Option &O) {
40 // Don't forward inputs from the original command line. They are added from
41 // InputInfoList.
42 return O.getKind() != Option::InputClass &&
43 !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput);
44 }
45
46 // Switch CPU names not recognized by GNU assembler to a close CPU that it does
47 // recognize, instead of a lower march from being picked in the absence of a cpu
48 // flag.
normalizeCPUNamesForAssembler(const ArgList & Args,ArgStringList & CmdArgs)49 static void normalizeCPUNamesForAssembler(const ArgList &Args,
50 ArgStringList &CmdArgs) {
51 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
52 StringRef CPUArg(A->getValue());
53 if (CPUArg.equals_lower("krait"))
54 CmdArgs.push_back("-mcpu=cortex-a15");
55 else if(CPUArg.equals_lower("kryo"))
56 CmdArgs.push_back("-mcpu=cortex-a57");
57 else
58 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
59 }
60 }
61
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const62 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
63 const InputInfo &Output,
64 const InputInfoList &Inputs,
65 const ArgList &Args,
66 const char *LinkingOutput) const {
67 const Driver &D = getToolChain().getDriver();
68 ArgStringList CmdArgs;
69
70 for (const auto &A : Args) {
71 if (forwardToGCC(A->getOption())) {
72 // It is unfortunate that we have to claim here, as this means
73 // we will basically never report anything interesting for
74 // platforms using a generic gcc, even if we are just using gcc
75 // to get to the assembler.
76 A->claim();
77
78 // Don't forward any -g arguments to assembly steps.
79 if (isa<AssembleJobAction>(JA) &&
80 A->getOption().matches(options::OPT_g_Group))
81 continue;
82
83 // Don't forward any -W arguments to assembly and link steps.
84 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
85 A->getOption().matches(options::OPT_W_Group))
86 continue;
87
88 // Don't forward -mno-unaligned-access since GCC doesn't understand
89 // it and because it doesn't affect the assembly or link steps.
90 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
91 (A->getOption().matches(options::OPT_munaligned_access) ||
92 A->getOption().matches(options::OPT_mno_unaligned_access)))
93 continue;
94
95 A->render(Args, CmdArgs);
96 }
97 }
98
99 RenderExtraToolArgs(JA, CmdArgs);
100
101 // If using a driver driver, force the arch.
102 if (getToolChain().getTriple().isOSDarwin()) {
103 CmdArgs.push_back("-arch");
104 CmdArgs.push_back(
105 Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
106 }
107
108 // Try to force gcc to match the tool chain we want, if we recognize
109 // the arch.
110 //
111 // FIXME: The triple class should directly provide the information we want
112 // here.
113 switch (getToolChain().getArch()) {
114 default:
115 break;
116 case llvm::Triple::x86:
117 case llvm::Triple::ppc:
118 CmdArgs.push_back("-m32");
119 break;
120 case llvm::Triple::x86_64:
121 case llvm::Triple::ppc64:
122 case llvm::Triple::ppc64le:
123 CmdArgs.push_back("-m64");
124 break;
125 case llvm::Triple::sparcel:
126 CmdArgs.push_back("-EL");
127 break;
128 }
129
130 if (Output.isFilename()) {
131 CmdArgs.push_back("-o");
132 CmdArgs.push_back(Output.getFilename());
133 } else {
134 assert(Output.isNothing() && "Unexpected output");
135 CmdArgs.push_back("-fsyntax-only");
136 }
137
138 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
139
140 // Only pass -x if gcc will understand it; otherwise hope gcc
141 // understands the suffix correctly. The main use case this would go
142 // wrong in is for linker inputs if they happened to have an odd
143 // suffix; really the only way to get this to happen is a command
144 // like '-x foobar a.c' which will treat a.c like a linker input.
145 //
146 // FIXME: For the linker case specifically, can we safely convert
147 // inputs into '-Wl,' options?
148 for (const auto &II : Inputs) {
149 // Don't try to pass LLVM or AST inputs to a generic gcc.
150 if (types::isLLVMIR(II.getType()))
151 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
152 << getToolChain().getTripleString();
153 else if (II.getType() == types::TY_AST)
154 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
155 else if (II.getType() == types::TY_ModuleFile)
156 D.Diag(diag::err_drv_no_module_support)
157 << getToolChain().getTripleString();
158
159 if (types::canTypeBeUserSpecified(II.getType())) {
160 CmdArgs.push_back("-x");
161 CmdArgs.push_back(types::getTypeName(II.getType()));
162 }
163
164 if (II.isFilename())
165 CmdArgs.push_back(II.getFilename());
166 else {
167 const Arg &A = II.getInputArg();
168
169 // Reverse translate some rewritten options.
170 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
171 CmdArgs.push_back("-lstdc++");
172 continue;
173 }
174
175 // Don't render as input, we need gcc to do the translations.
176 A.render(Args, CmdArgs);
177 }
178 }
179
180 const std::string &customGCCName = D.getCCCGenericGCCName();
181 const char *GCCName;
182 if (!customGCCName.empty())
183 GCCName = customGCCName.c_str();
184 else if (D.CCCIsCXX()) {
185 GCCName = "g++";
186 } else
187 GCCName = "gcc";
188
189 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
190 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
191 }
192
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const193 void tools::gcc::Preprocessor::RenderExtraToolArgs(
194 const JobAction &JA, ArgStringList &CmdArgs) const {
195 CmdArgs.push_back("-E");
196 }
197
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const198 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
199 ArgStringList &CmdArgs) const {
200 const Driver &D = getToolChain().getDriver();
201
202 switch (JA.getType()) {
203 // If -flto, etc. are present then make sure not to force assembly output.
204 case types::TY_LLVM_IR:
205 case types::TY_LTO_IR:
206 case types::TY_LLVM_BC:
207 case types::TY_LTO_BC:
208 CmdArgs.push_back("-c");
209 break;
210 // We assume we've got an "integrated" assembler in that gcc will produce an
211 // object file itself.
212 case types::TY_Object:
213 CmdArgs.push_back("-c");
214 break;
215 case types::TY_PP_Asm:
216 CmdArgs.push_back("-S");
217 break;
218 case types::TY_Nothing:
219 CmdArgs.push_back("-fsyntax-only");
220 break;
221 default:
222 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
223 }
224 }
225
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const226 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
227 ArgStringList &CmdArgs) const {
228 // The types are (hopefully) good enough.
229 }
230
231 // On Arm the endianness of the output file is determined by the target and
232 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and
233 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a
234 // normalized triple so we must handle the flag here.
isArmBigEndian(const llvm::Triple & Triple,const ArgList & Args)235 static bool isArmBigEndian(const llvm::Triple &Triple,
236 const ArgList &Args) {
237 bool IsBigEndian = false;
238 switch (Triple.getArch()) {
239 case llvm::Triple::armeb:
240 case llvm::Triple::thumbeb:
241 IsBigEndian = true;
242 LLVM_FALLTHROUGH;
243 case llvm::Triple::arm:
244 case llvm::Triple::thumb:
245 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
246 options::OPT_mbig_endian))
247 IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
248 break;
249 default:
250 break;
251 }
252 return IsBigEndian;
253 }
254
getLDMOption(const llvm::Triple & T,const ArgList & Args)255 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
256 switch (T.getArch()) {
257 case llvm::Triple::x86:
258 if (T.isOSIAMCU())
259 return "elf_iamcu";
260 return "elf_i386";
261 case llvm::Triple::aarch64:
262 return "aarch64linux";
263 case llvm::Triple::aarch64_be:
264 return "aarch64linuxb";
265 case llvm::Triple::arm:
266 case llvm::Triple::thumb:
267 case llvm::Triple::armeb:
268 case llvm::Triple::thumbeb:
269 return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi";
270 case llvm::Triple::ppc:
271 return "elf32ppclinux";
272 case llvm::Triple::ppc64:
273 return "elf64ppc";
274 case llvm::Triple::ppc64le:
275 return "elf64lppc";
276 case llvm::Triple::riscv32:
277 return "elf32lriscv";
278 case llvm::Triple::riscv64:
279 return "elf64lriscv";
280 case llvm::Triple::sparc:
281 case llvm::Triple::sparcel:
282 return "elf32_sparc";
283 case llvm::Triple::sparcv9:
284 return "elf64_sparc";
285 case llvm::Triple::mips:
286 return "elf32btsmip";
287 case llvm::Triple::mipsel:
288 return "elf32ltsmip";
289 case llvm::Triple::mips64:
290 if (tools::mips::hasMipsAbiArg(Args, "n32") ||
291 T.getEnvironment() == llvm::Triple::GNUABIN32)
292 return "elf32btsmipn32";
293 return "elf64btsmip";
294 case llvm::Triple::mips64el:
295 if (tools::mips::hasMipsAbiArg(Args, "n32") ||
296 T.getEnvironment() == llvm::Triple::GNUABIN32)
297 return "elf32ltsmipn32";
298 return "elf64ltsmip";
299 case llvm::Triple::systemz:
300 return "elf64_s390";
301 case llvm::Triple::x86_64:
302 if (T.getEnvironment() == llvm::Triple::GNUX32)
303 return "elf32_x86_64";
304 return "elf_x86_64";
305 default:
306 return nullptr;
307 }
308 }
309
getPIE(const ArgList & Args,const toolchains::Linux & ToolChain)310 static bool getPIE(const ArgList &Args, const toolchains::Linux &ToolChain) {
311 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) ||
312 Args.hasArg(options::OPT_r))
313 return false;
314
315 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie,
316 options::OPT_nopie);
317 if (!A)
318 return ToolChain.isPIEDefault();
319 return A->getOption().matches(options::OPT_pie);
320 }
321
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const322 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
323 const InputInfo &Output,
324 const InputInfoList &Inputs,
325 const ArgList &Args,
326 const char *LinkingOutput) const {
327 const toolchains::Linux &ToolChain =
328 static_cast<const toolchains::Linux &>(getToolChain());
329 const Driver &D = ToolChain.getDriver();
330
331 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
332
333 const llvm::Triple::ArchType Arch = ToolChain.getArch();
334 const bool isAndroid = ToolChain.getTriple().isAndroid();
335 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
336 const bool IsPIE = getPIE(Args, ToolChain);
337 const bool HasCRTBeginEndFiles =
338 ToolChain.getTriple().hasEnvironment() ||
339 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
340
341 ArgStringList CmdArgs;
342
343 // Silence warning for "clang -g foo.o -o foo"
344 Args.ClaimAllArgs(options::OPT_g_Group);
345 // and "clang -emit-llvm foo.o -o foo"
346 Args.ClaimAllArgs(options::OPT_emit_llvm);
347 // and for "clang -w foo.o -o foo". Other warning options are already
348 // handled somewhere else.
349 Args.ClaimAllArgs(options::OPT_w);
350
351 if (!D.SysRoot.empty())
352 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
353
354 if (IsPIE)
355 CmdArgs.push_back("-pie");
356
357 if (Args.hasArg(options::OPT_rdynamic))
358 CmdArgs.push_back("-export-dynamic");
359
360 if (Args.hasArg(options::OPT_s))
361 CmdArgs.push_back("-s");
362
363 if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) {
364 bool IsBigEndian = isArmBigEndian(Triple, Args);
365 if (IsBigEndian)
366 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
367 IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be;
368 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL");
369 }
370
371 // Most Android ARM64 targets should enable the linker fix for erratum
372 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
373 if (Arch == llvm::Triple::aarch64 && isAndroid) {
374 std::string CPU = getCPUName(Args, Triple);
375 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
376 CmdArgs.push_back("--fix-cortex-a53-843419");
377 }
378
379 for (const auto &Opt : ToolChain.ExtraOpts)
380 CmdArgs.push_back(Opt.c_str());
381
382 CmdArgs.push_back("--eh-frame-hdr");
383
384 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
385 CmdArgs.push_back("-m");
386 CmdArgs.push_back(LDMOption);
387 } else {
388 D.Diag(diag::err_target_unknown_triple) << Triple.str();
389 return;
390 }
391
392 if (Args.hasArg(options::OPT_static)) {
393 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
394 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb)
395 CmdArgs.push_back("-Bstatic");
396 else
397 CmdArgs.push_back("-static");
398 } else if (Args.hasArg(options::OPT_shared)) {
399 CmdArgs.push_back("-shared");
400 }
401
402 if (!Args.hasArg(options::OPT_static)) {
403 if (Args.hasArg(options::OPT_rdynamic))
404 CmdArgs.push_back("-export-dynamic");
405
406 if (!Args.hasArg(options::OPT_shared)) {
407 const std::string Loader =
408 D.DyldPrefix + ToolChain.getDynamicLinker(Args);
409 CmdArgs.push_back("-dynamic-linker");
410 CmdArgs.push_back(Args.MakeArgString(Loader));
411 }
412 }
413
414 CmdArgs.push_back("-o");
415 CmdArgs.push_back(Output.getFilename());
416
417 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
418 if (!isAndroid && !IsIAMCU) {
419 const char *crt1 = nullptr;
420 if (!Args.hasArg(options::OPT_shared)) {
421 if (Args.hasArg(options::OPT_pg))
422 crt1 = "gcrt1.o";
423 else if (IsPIE)
424 crt1 = "Scrt1.o";
425 else
426 crt1 = "crt1.o";
427 }
428 if (crt1)
429 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
430
431 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
432 }
433
434 if (IsIAMCU)
435 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
436 else {
437 const char *crtbegin;
438 if (Args.hasArg(options::OPT_static))
439 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
440 else if (Args.hasArg(options::OPT_shared))
441 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
442 else if (IsPIE)
443 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
444 else
445 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
446
447 if (HasCRTBeginEndFiles)
448 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
449 }
450
451 // Add crtfastmath.o if available and fast math is enabled.
452 ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
453 }
454
455 Args.AddAllArgs(CmdArgs, options::OPT_L);
456 Args.AddAllArgs(CmdArgs, options::OPT_u);
457
458 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
459
460 if (D.isUsingLTO()) {
461 assert(!Inputs.empty() && "Must have at least one input.");
462 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
463 D.getLTOMode() == LTOK_Thin);
464 }
465
466 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
467 CmdArgs.push_back("--no-demangle");
468
469 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
470 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
471 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
472 // The profile runtime also needs access to system libraries.
473 getToolChain().addProfileRTLibs(Args, CmdArgs);
474
475 if (D.CCCIsCXX() &&
476 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
477 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
478 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
479 !Args.hasArg(options::OPT_static);
480 if (OnlyLibstdcxxStatic)
481 CmdArgs.push_back("-Bstatic");
482 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
483 if (OnlyLibstdcxxStatic)
484 CmdArgs.push_back("-Bdynamic");
485 }
486 CmdArgs.push_back("-lm");
487 }
488 // Silence warnings when linking C code with a C++ '-stdlib' argument.
489 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
490
491 if (!Args.hasArg(options::OPT_nostdlib)) {
492 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
493 if (Args.hasArg(options::OPT_static))
494 CmdArgs.push_back("--start-group");
495
496 if (NeedsSanitizerDeps)
497 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
498
499 if (NeedsXRayDeps)
500 linkXRayRuntimeDeps(ToolChain, CmdArgs);
501
502 bool WantPthread = Args.hasArg(options::OPT_pthread) ||
503 Args.hasArg(options::OPT_pthreads);
504
505 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
506 // require librt. Most modern Linux platforms do, but some may not.
507 if (addOpenMPRuntime(CmdArgs, ToolChain, Args,
508 JA.isHostOffloading(Action::OFK_OpenMP),
509 /* GompNeedsRT= */ true))
510 // OpenMP runtimes implies pthreads when using the GNU toolchain.
511 // FIXME: Does this really make sense for all GNU toolchains?
512 WantPthread = true;
513
514 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
515
516 if (WantPthread && !isAndroid)
517 CmdArgs.push_back("-lpthread");
518
519 if (Args.hasArg(options::OPT_fsplit_stack))
520 CmdArgs.push_back("--wrap=pthread_create");
521
522 CmdArgs.push_back("-lc");
523
524 // Add IAMCU specific libs, if needed.
525 if (IsIAMCU)
526 CmdArgs.push_back("-lgloss");
527
528 if (Args.hasArg(options::OPT_static))
529 CmdArgs.push_back("--end-group");
530 else
531 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
532
533 // Add IAMCU specific libs (outside the group), if needed.
534 if (IsIAMCU) {
535 CmdArgs.push_back("--as-needed");
536 CmdArgs.push_back("-lsoftfp");
537 CmdArgs.push_back("--no-as-needed");
538 }
539 }
540
541 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
542 const char *crtend;
543 if (Args.hasArg(options::OPT_shared))
544 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
545 else if (IsPIE)
546 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
547 else
548 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
549
550 if (HasCRTBeginEndFiles)
551 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend)));
552 if (!isAndroid)
553 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
554 }
555 }
556
557 // Add OpenMP offloading linker script args if required.
558 AddOpenMPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA);
559
560 // Add HIP offloading linker script args if required.
561 AddHIPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA,
562 *this);
563
564 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
565 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
566 }
567
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const568 void tools::gnutools::Assembler::ConstructJob(Compilation &C,
569 const JobAction &JA,
570 const InputInfo &Output,
571 const InputInfoList &Inputs,
572 const ArgList &Args,
573 const char *LinkingOutput) const {
574 const auto &D = getToolChain().getDriver();
575
576 claimNoWarnArgs(Args);
577
578 ArgStringList CmdArgs;
579
580 llvm::Reloc::Model RelocationModel;
581 unsigned PICLevel;
582 bool IsPIE;
583 std::tie(RelocationModel, PICLevel, IsPIE) =
584 ParsePICArgs(getToolChain(), Args);
585
586 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
587 if (A->getOption().getID() == options::OPT_gz) {
588 CmdArgs.push_back("-compress-debug-sections");
589 } else {
590 StringRef Value = A->getValue();
591 if (Value == "none") {
592 CmdArgs.push_back("-compress-debug-sections=none");
593 } else if (Value == "zlib" || Value == "zlib-gnu") {
594 CmdArgs.push_back(
595 Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
596 } else {
597 D.Diag(diag::err_drv_unsupported_option_argument)
598 << A->getOption().getName() << Value;
599 }
600 }
601 }
602
603 switch (getToolChain().getArch()) {
604 default:
605 break;
606 // Add --32/--64 to make sure we get the format we want.
607 // This is incomplete
608 case llvm::Triple::x86:
609 CmdArgs.push_back("--32");
610 break;
611 case llvm::Triple::x86_64:
612 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32)
613 CmdArgs.push_back("--x32");
614 else
615 CmdArgs.push_back("--64");
616 break;
617 case llvm::Triple::ppc: {
618 CmdArgs.push_back("-a32");
619 CmdArgs.push_back("-mppc");
620 CmdArgs.push_back(
621 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
622 break;
623 }
624 case llvm::Triple::ppc64: {
625 CmdArgs.push_back("-a64");
626 CmdArgs.push_back("-mppc64");
627 CmdArgs.push_back(
628 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
629 break;
630 }
631 case llvm::Triple::ppc64le: {
632 CmdArgs.push_back("-a64");
633 CmdArgs.push_back("-mppc64");
634 CmdArgs.push_back("-mlittle-endian");
635 CmdArgs.push_back(
636 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
637 break;
638 }
639 case llvm::Triple::riscv32:
640 case llvm::Triple::riscv64: {
641 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple());
642 CmdArgs.push_back("-mabi");
643 CmdArgs.push_back(ABIName.data());
644 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
645 StringRef MArch = A->getValue();
646 CmdArgs.push_back("-march");
647 CmdArgs.push_back(MArch.data());
648 }
649 break;
650 }
651 case llvm::Triple::sparc:
652 case llvm::Triple::sparcel: {
653 CmdArgs.push_back("-32");
654 std::string CPU = getCPUName(Args, getToolChain().getTriple());
655 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
656 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
657 break;
658 }
659 case llvm::Triple::sparcv9: {
660 CmdArgs.push_back("-64");
661 std::string CPU = getCPUName(Args, getToolChain().getTriple());
662 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
663 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
664 break;
665 }
666 case llvm::Triple::arm:
667 case llvm::Triple::armeb:
668 case llvm::Triple::thumb:
669 case llvm::Triple::thumbeb: {
670 const llvm::Triple &Triple2 = getToolChain().getTriple();
671 CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL");
672 switch (Triple2.getSubArch()) {
673 case llvm::Triple::ARMSubArch_v7:
674 CmdArgs.push_back("-mfpu=neon");
675 break;
676 case llvm::Triple::ARMSubArch_v8:
677 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
678 break;
679 default:
680 break;
681 }
682
683 switch (arm::getARMFloatABI(getToolChain(), Args)) {
684 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
685 case arm::FloatABI::Soft:
686 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
687 break;
688 case arm::FloatABI::SoftFP:
689 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
690 break;
691 case arm::FloatABI::Hard:
692 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
693 break;
694 }
695
696 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
697 normalizeCPUNamesForAssembler(Args, CmdArgs);
698
699 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
700 break;
701 }
702 case llvm::Triple::aarch64:
703 case llvm::Triple::aarch64_be: {
704 CmdArgs.push_back(
705 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
706 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
707 normalizeCPUNamesForAssembler(Args, CmdArgs);
708
709 break;
710 }
711 case llvm::Triple::mips:
712 case llvm::Triple::mipsel:
713 case llvm::Triple::mips64:
714 case llvm::Triple::mips64el: {
715 StringRef CPUName;
716 StringRef ABIName;
717 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
718 ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
719
720 CmdArgs.push_back("-march");
721 CmdArgs.push_back(CPUName.data());
722
723 CmdArgs.push_back("-mabi");
724 CmdArgs.push_back(ABIName.data());
725
726 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
727 // or -mshared (not implemented) is in effect.
728 if (RelocationModel == llvm::Reloc::Static)
729 CmdArgs.push_back("-mno-shared");
730
731 // LLVM doesn't support -mplt yet and acts as if it is always given.
732 // However, -mplt has no effect with the N64 ABI.
733 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
734 CmdArgs.push_back("-call_nonpic");
735
736 if (getToolChain().getTriple().isLittleEndian())
737 CmdArgs.push_back("-EL");
738 else
739 CmdArgs.push_back("-EB");
740
741 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
742 if (StringRef(A->getValue()) == "2008")
743 CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
744 }
745
746 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
747 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
748 options::OPT_mfp64)) {
749 A->claim();
750 A->render(Args, CmdArgs);
751 } else if (mips::shouldUseFPXX(
752 Args, getToolChain().getTriple(), CPUName, ABIName,
753 mips::getMipsFloatABI(getToolChain().getDriver(), Args)))
754 CmdArgs.push_back("-mfpxx");
755
756 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
757 // -mno-mips16 is actually -no-mips16.
758 if (Arg *A =
759 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
760 if (A->getOption().matches(options::OPT_mips16)) {
761 A->claim();
762 A->render(Args, CmdArgs);
763 } else {
764 A->claim();
765 CmdArgs.push_back("-no-mips16");
766 }
767 }
768
769 Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
770 options::OPT_mno_micromips);
771 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
772 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
773
774 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
775 // Do not use AddLastArg because not all versions of MIPS assembler
776 // support -mmsa / -mno-msa options.
777 if (A->getOption().matches(options::OPT_mmsa))
778 CmdArgs.push_back(Args.MakeArgString("-mmsa"));
779 }
780
781 Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
782 options::OPT_msoft_float);
783
784 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
785 options::OPT_msingle_float);
786
787 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
788 options::OPT_mno_odd_spreg);
789
790 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
791 break;
792 }
793 case llvm::Triple::systemz: {
794 // Always pass an -march option, since our default of z10 is later
795 // than the GNU assembler's default.
796 StringRef CPUName = systemz::getSystemZTargetCPU(Args);
797 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
798 break;
799 }
800 }
801
802 Args.AddAllArgs(CmdArgs, options::OPT_I);
803 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
804
805 CmdArgs.push_back("-o");
806 CmdArgs.push_back(Output.getFilename());
807
808 for (const auto &II : Inputs)
809 CmdArgs.push_back(II.getFilename());
810
811 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
812 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
813
814 // Handle the debug info splitting at object creation time if we're
815 // creating an object.
816 // TODO: Currently only works on linux with newer objcopy.
817 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
818 getToolChain().getTriple().isOSLinux())
819 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
820 SplitDebugName(Args, Output));
821 }
822
823 namespace {
824 // Filter to remove Multilibs that don't exist as a suffix to Path
825 class FilterNonExistent {
826 StringRef Base, File;
827 llvm::vfs::FileSystem &VFS;
828
829 public:
FilterNonExistent(StringRef Base,StringRef File,llvm::vfs::FileSystem & VFS)830 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
831 : Base(Base), File(File), VFS(VFS) {}
operator ()(const Multilib & M)832 bool operator()(const Multilib &M) {
833 return !VFS.exists(Base + M.gccSuffix() + File);
834 }
835 };
836 } // end anonymous namespace
837
isSoftFloatABI(const ArgList & Args)838 static bool isSoftFloatABI(const ArgList &Args) {
839 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
840 options::OPT_mfloat_abi_EQ);
841 if (!A)
842 return false;
843
844 return A->getOption().matches(options::OPT_msoft_float) ||
845 (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
846 A->getValue() == StringRef("soft"));
847 }
848
849 /// \p Flag must be a flag accepted by the driver with its leading '-' removed,
850 // otherwise '-print-multi-lib' will not emit them correctly.
addMultilibFlag(bool Enabled,const char * const Flag,std::vector<std::string> & Flags)851 static void addMultilibFlag(bool Enabled, const char *const Flag,
852 std::vector<std::string> &Flags) {
853 if (Enabled)
854 Flags.push_back(std::string("+") + Flag);
855 else
856 Flags.push_back(std::string("-") + Flag);
857 }
858
isArmOrThumbArch(llvm::Triple::ArchType Arch)859 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
860 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
861 }
862
isMipsEL(llvm::Triple::ArchType Arch)863 static bool isMipsEL(llvm::Triple::ArchType Arch) {
864 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
865 }
866
isMips16(const ArgList & Args)867 static bool isMips16(const ArgList &Args) {
868 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
869 return A && A->getOption().matches(options::OPT_mips16);
870 }
871
isMicroMips(const ArgList & Args)872 static bool isMicroMips(const ArgList &Args) {
873 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
874 return A && A->getOption().matches(options::OPT_mmicromips);
875 }
876
isRISCV(llvm::Triple::ArchType Arch)877 static bool isRISCV(llvm::Triple::ArchType Arch) {
878 return Arch == llvm::Triple::riscv32 || Arch == llvm::Triple::riscv64;
879 }
880
isMSP430(llvm::Triple::ArchType Arch)881 static bool isMSP430(llvm::Triple::ArchType Arch) {
882 return Arch == llvm::Triple::msp430;
883 }
884
makeMultilib(StringRef commonSuffix)885 static Multilib makeMultilib(StringRef commonSuffix) {
886 return Multilib(commonSuffix, commonSuffix, commonSuffix);
887 }
888
findMipsCsMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)889 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
890 FilterNonExistent &NonExistent,
891 DetectedMultilibs &Result) {
892 // Check for Code Sourcery toolchain multilibs
893 MultilibSet CSMipsMultilibs;
894 {
895 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
896
897 auto MArchMicroMips =
898 makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
899
900 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
901
902 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
903
904 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
905
906 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
907
908 auto DefaultFloat =
909 makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
910
911 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
912
913 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
914
915 // Note that this one's osSuffix is ""
916 auto MAbi64 = makeMultilib("")
917 .gccSuffix("/64")
918 .includeSuffix("/64")
919 .flag("+mabi=n64")
920 .flag("-mabi=n32")
921 .flag("-m32");
922
923 CSMipsMultilibs =
924 MultilibSet()
925 .Either(MArchMips16, MArchMicroMips, MArchDefault)
926 .Maybe(UCLibc)
927 .Either(SoftFloat, Nan2008, DefaultFloat)
928 .FilterOut("/micromips/nan2008")
929 .FilterOut("/mips16/nan2008")
930 .Either(BigEndian, LittleEndian)
931 .Maybe(MAbi64)
932 .FilterOut("/mips16.*/64")
933 .FilterOut("/micromips.*/64")
934 .FilterOut(NonExistent)
935 .setIncludeDirsCallback([](const Multilib &M) {
936 std::vector<std::string> Dirs({"/include"});
937 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
938 Dirs.push_back(
939 "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
940 else
941 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
942 return Dirs;
943 });
944 }
945
946 MultilibSet DebianMipsMultilibs;
947 {
948 Multilib MAbiN32 =
949 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
950
951 Multilib M64 = Multilib()
952 .gccSuffix("/64")
953 .includeSuffix("/64")
954 .flag("+m64")
955 .flag("-m32")
956 .flag("-mabi=n32");
957
958 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32");
959
960 DebianMipsMultilibs =
961 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
962 }
963
964 // Sort candidates. Toolchain that best meets the directories tree goes first.
965 // Then select the first toolchains matches command line flags.
966 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
967 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
968 std::iter_swap(Candidates, Candidates + 1);
969 for (const MultilibSet *Candidate : Candidates) {
970 if (Candidate->select(Flags, Result.SelectedMultilib)) {
971 if (Candidate == &DebianMipsMultilibs)
972 Result.BiarchSibling = Multilib();
973 Result.Multilibs = *Candidate;
974 return true;
975 }
976 }
977 return false;
978 }
979
findMipsAndroidMultilibs(llvm::vfs::FileSystem & VFS,StringRef Path,const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)980 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path,
981 const Multilib::flags_list &Flags,
982 FilterNonExistent &NonExistent,
983 DetectedMultilibs &Result) {
984
985 MultilibSet AndroidMipsMultilibs =
986 MultilibSet()
987 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
988 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
989 .FilterOut(NonExistent);
990
991 MultilibSet AndroidMipselMultilibs =
992 MultilibSet()
993 .Either(Multilib().flag("+march=mips32"),
994 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
995 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
996 .FilterOut(NonExistent);
997
998 MultilibSet AndroidMips64elMultilibs =
999 MultilibSet()
1000 .Either(
1001 Multilib().flag("+march=mips64r6"),
1002 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
1003 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1004 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1005 .FilterOut(NonExistent);
1006
1007 MultilibSet *MS = &AndroidMipsMultilibs;
1008 if (VFS.exists(Path + "/mips-r6"))
1009 MS = &AndroidMipselMultilibs;
1010 else if (VFS.exists(Path + "/32"))
1011 MS = &AndroidMips64elMultilibs;
1012 if (MS->select(Flags, Result.SelectedMultilib)) {
1013 Result.Multilibs = *MS;
1014 return true;
1015 }
1016 return false;
1017 }
1018
findMipsMuslMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1019 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags,
1020 FilterNonExistent &NonExistent,
1021 DetectedMultilibs &Result) {
1022 // Musl toolchain multilibs
1023 MultilibSet MuslMipsMultilibs;
1024 {
1025 auto MArchMipsR2 = makeMultilib("")
1026 .osSuffix("/mips-r2-hard-musl")
1027 .flag("+EB")
1028 .flag("-EL")
1029 .flag("+march=mips32r2");
1030
1031 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1032 .flag("-EB")
1033 .flag("+EL")
1034 .flag("+march=mips32r2");
1035
1036 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1037
1038 // Specify the callback that computes the include directories.
1039 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1040 return std::vector<std::string>(
1041 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1042 });
1043 }
1044 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1045 Result.Multilibs = MuslMipsMultilibs;
1046 return true;
1047 }
1048 return false;
1049 }
1050
findMipsMtiMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1051 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags,
1052 FilterNonExistent &NonExistent,
1053 DetectedMultilibs &Result) {
1054 // CodeScape MTI toolchain v1.2 and early.
1055 MultilibSet MtiMipsMultilibsV1;
1056 {
1057 auto MArchMips32 = makeMultilib("/mips32")
1058 .flag("+m32")
1059 .flag("-m64")
1060 .flag("-mmicromips")
1061 .flag("+march=mips32");
1062
1063 auto MArchMicroMips = makeMultilib("/micromips")
1064 .flag("+m32")
1065 .flag("-m64")
1066 .flag("+mmicromips");
1067
1068 auto MArchMips64r2 = makeMultilib("/mips64r2")
1069 .flag("-m32")
1070 .flag("+m64")
1071 .flag("+march=mips64r2");
1072
1073 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1074 "-march=mips64r2");
1075
1076 auto MArchDefault = makeMultilib("")
1077 .flag("+m32")
1078 .flag("-m64")
1079 .flag("-mmicromips")
1080 .flag("+march=mips32r2");
1081
1082 auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1083
1084 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1085
1086 auto MAbi64 =
1087 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1088
1089 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1090
1091 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1092
1093 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1094
1095 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1096
1097 MtiMipsMultilibsV1 =
1098 MultilibSet()
1099 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1100 MArchDefault)
1101 .Maybe(UCLibc)
1102 .Maybe(Mips16)
1103 .FilterOut("/mips64/mips16")
1104 .FilterOut("/mips64r2/mips16")
1105 .FilterOut("/micromips/mips16")
1106 .Maybe(MAbi64)
1107 .FilterOut("/micromips/64")
1108 .FilterOut("/mips32/64")
1109 .FilterOut("^/64")
1110 .FilterOut("/mips16/64")
1111 .Either(BigEndian, LittleEndian)
1112 .Maybe(SoftFloat)
1113 .Maybe(Nan2008)
1114 .FilterOut(".*sof/nan2008")
1115 .FilterOut(NonExistent)
1116 .setIncludeDirsCallback([](const Multilib &M) {
1117 std::vector<std::string> Dirs({"/include"});
1118 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1119 Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1120 else
1121 Dirs.push_back("/../../../../sysroot/usr/include");
1122 return Dirs;
1123 });
1124 }
1125
1126 // CodeScape IMG toolchain starting from v1.3.
1127 MultilibSet MtiMipsMultilibsV2;
1128 {
1129 auto BeHard = makeMultilib("/mips-r2-hard")
1130 .flag("+EB")
1131 .flag("-msoft-float")
1132 .flag("-mnan=2008")
1133 .flag("-muclibc");
1134 auto BeSoft = makeMultilib("/mips-r2-soft")
1135 .flag("+EB")
1136 .flag("+msoft-float")
1137 .flag("-mnan=2008");
1138 auto ElHard = makeMultilib("/mipsel-r2-hard")
1139 .flag("+EL")
1140 .flag("-msoft-float")
1141 .flag("-mnan=2008")
1142 .flag("-muclibc");
1143 auto ElSoft = makeMultilib("/mipsel-r2-soft")
1144 .flag("+EL")
1145 .flag("+msoft-float")
1146 .flag("-mnan=2008")
1147 .flag("-mmicromips");
1148 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1149 .flag("+EB")
1150 .flag("-msoft-float")
1151 .flag("+mnan=2008")
1152 .flag("-muclibc");
1153 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1154 .flag("+EL")
1155 .flag("-msoft-float")
1156 .flag("+mnan=2008")
1157 .flag("-muclibc")
1158 .flag("-mmicromips");
1159 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1160 .flag("+EB")
1161 .flag("-msoft-float")
1162 .flag("+mnan=2008")
1163 .flag("+muclibc");
1164 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1165 .flag("+EL")
1166 .flag("-msoft-float")
1167 .flag("+mnan=2008")
1168 .flag("+muclibc");
1169 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1170 .flag("+EB")
1171 .flag("-msoft-float")
1172 .flag("-mnan=2008")
1173 .flag("+muclibc");
1174 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1175 .flag("+EL")
1176 .flag("-msoft-float")
1177 .flag("-mnan=2008")
1178 .flag("+muclibc");
1179 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1180 .flag("+EL")
1181 .flag("-msoft-float")
1182 .flag("+mnan=2008")
1183 .flag("+mmicromips");
1184 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1185 .flag("+EL")
1186 .flag("+msoft-float")
1187 .flag("-mnan=2008")
1188 .flag("+mmicromips");
1189
1190 auto O32 =
1191 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1192 auto N32 =
1193 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1194 auto N64 =
1195 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1196
1197 MtiMipsMultilibsV2 =
1198 MultilibSet()
1199 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1200 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1201 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1202 .Either(O32, N32, N64)
1203 .FilterOut(NonExistent)
1204 .setIncludeDirsCallback([](const Multilib &M) {
1205 return std::vector<std::string>({"/../../../../sysroot" +
1206 M.includeSuffix() +
1207 "/../usr/include"});
1208 })
1209 .setFilePathsCallback([](const Multilib &M) {
1210 return std::vector<std::string>(
1211 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1212 });
1213 }
1214 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1215 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1216 Result.Multilibs = *Candidate;
1217 return true;
1218 }
1219 }
1220 return false;
1221 }
1222
findMipsImgMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1223 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags,
1224 FilterNonExistent &NonExistent,
1225 DetectedMultilibs &Result) {
1226 // CodeScape IMG toolchain v1.2 and early.
1227 MultilibSet ImgMultilibsV1;
1228 {
1229 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1230
1231 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1232
1233 auto MAbi64 =
1234 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1235
1236 ImgMultilibsV1 =
1237 MultilibSet()
1238 .Maybe(Mips64r6)
1239 .Maybe(MAbi64)
1240 .Maybe(LittleEndian)
1241 .FilterOut(NonExistent)
1242 .setIncludeDirsCallback([](const Multilib &M) {
1243 return std::vector<std::string>(
1244 {"/include", "/../../../../sysroot/usr/include"});
1245 });
1246 }
1247
1248 // CodeScape IMG toolchain starting from v1.3.
1249 MultilibSet ImgMultilibsV2;
1250 {
1251 auto BeHard = makeMultilib("/mips-r6-hard")
1252 .flag("+EB")
1253 .flag("-msoft-float")
1254 .flag("-mmicromips");
1255 auto BeSoft = makeMultilib("/mips-r6-soft")
1256 .flag("+EB")
1257 .flag("+msoft-float")
1258 .flag("-mmicromips");
1259 auto ElHard = makeMultilib("/mipsel-r6-hard")
1260 .flag("+EL")
1261 .flag("-msoft-float")
1262 .flag("-mmicromips");
1263 auto ElSoft = makeMultilib("/mipsel-r6-soft")
1264 .flag("+EL")
1265 .flag("+msoft-float")
1266 .flag("-mmicromips");
1267 auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1268 .flag("+EB")
1269 .flag("-msoft-float")
1270 .flag("+mmicromips");
1271 auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1272 .flag("+EB")
1273 .flag("+msoft-float")
1274 .flag("+mmicromips");
1275 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1276 .flag("+EL")
1277 .flag("-msoft-float")
1278 .flag("+mmicromips");
1279 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1280 .flag("+EL")
1281 .flag("+msoft-float")
1282 .flag("+mmicromips");
1283
1284 auto O32 =
1285 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1286 auto N32 =
1287 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1288 auto N64 =
1289 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1290
1291 ImgMultilibsV2 =
1292 MultilibSet()
1293 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1294 ElMicroHard, ElMicroSoft})
1295 .Either(O32, N32, N64)
1296 .FilterOut(NonExistent)
1297 .setIncludeDirsCallback([](const Multilib &M) {
1298 return std::vector<std::string>({"/../../../../sysroot" +
1299 M.includeSuffix() +
1300 "/../usr/include"});
1301 })
1302 .setFilePathsCallback([](const Multilib &M) {
1303 return std::vector<std::string>(
1304 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1305 });
1306 }
1307 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1308 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1309 Result.Multilibs = *Candidate;
1310 return true;
1311 }
1312 }
1313 return false;
1314 }
1315
findMIPSMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1316 bool clang::driver::findMIPSMultilibs(const Driver &D,
1317 const llvm::Triple &TargetTriple,
1318 StringRef Path, const ArgList &Args,
1319 DetectedMultilibs &Result) {
1320 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1321
1322 StringRef CPUName;
1323 StringRef ABIName;
1324 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1325
1326 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1327
1328 Multilib::flags_list Flags;
1329 addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags);
1330 addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags);
1331 addMultilibFlag(isMips16(Args), "mips16", Flags);
1332 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1333 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1334 CPUName == "mips32r5" || CPUName == "p5600",
1335 "march=mips32r2", Flags);
1336 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1337 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1338 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1339 CPUName == "mips64r5" || CPUName == "octeon",
1340 "march=mips64r2", Flags);
1341 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1342 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1343 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1344 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008",
1345 Flags);
1346 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1347 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1348 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1349 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1350 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1351 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1352
1353 if (TargetTriple.isAndroid())
1354 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1355 Result);
1356
1357 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1358 TargetTriple.getOS() == llvm::Triple::Linux &&
1359 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1360 return findMipsMuslMultilibs(Flags, NonExistent, Result);
1361
1362 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1363 TargetTriple.getOS() == llvm::Triple::Linux &&
1364 TargetTriple.isGNUEnvironment())
1365 return findMipsMtiMultilibs(Flags, NonExistent, Result);
1366
1367 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1368 TargetTriple.getOS() == llvm::Triple::Linux &&
1369 TargetTriple.isGNUEnvironment())
1370 return findMipsImgMultilibs(Flags, NonExistent, Result);
1371
1372 if (findMipsCsMultilibs(Flags, NonExistent, Result))
1373 return true;
1374
1375 // Fallback to the regular toolchain-tree structure.
1376 Multilib Default;
1377 Result.Multilibs.push_back(Default);
1378 Result.Multilibs.FilterOut(NonExistent);
1379
1380 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1381 Result.BiarchSibling = Multilib();
1382 return true;
1383 }
1384
1385 return false;
1386 }
1387
findAndroidArmMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1388 static void findAndroidArmMultilibs(const Driver &D,
1389 const llvm::Triple &TargetTriple,
1390 StringRef Path, const ArgList &Args,
1391 DetectedMultilibs &Result) {
1392 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1393 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1394 Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1395 .flag("+march=armv7-a")
1396 .flag("-mthumb");
1397 Multilib ThumbMultilib = makeMultilib("/thumb")
1398 .flag("-march=armv7-a")
1399 .flag("+mthumb");
1400 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1401 .flag("+march=armv7-a")
1402 .flag("+mthumb");
1403 Multilib DefaultMultilib = makeMultilib("")
1404 .flag("-march=armv7-a")
1405 .flag("-mthumb");
1406 MultilibSet AndroidArmMultilibs =
1407 MultilibSet()
1408 .Either(ThumbMultilib, ArmV7Multilib,
1409 ArmV7ThumbMultilib, DefaultMultilib)
1410 .FilterOut(NonExistent);
1411
1412 Multilib::flags_list Flags;
1413 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1414 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1415 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1416 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1417 bool IsThumbMode = IsThumbArch ||
1418 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1419 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1420 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1421 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1422 (IsArmArch && Arch == "" && IsV7SubArch));
1423 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags);
1424 addMultilibFlag(IsThumbMode, "mthumb", Flags);
1425
1426 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1427 Result.Multilibs = AndroidArmMultilibs;
1428 }
1429
findMSP430Multilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1430 static bool findMSP430Multilibs(const Driver &D,
1431 const llvm::Triple &TargetTriple,
1432 StringRef Path, const ArgList &Args,
1433 DetectedMultilibs &Result) {
1434 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1435 Multilib MSP430Multilib = makeMultilib("/430");
1436 // FIXME: when clang starts to support msp430x ISA additional logic
1437 // to select between multilib must be implemented
1438 // Multilib MSP430xMultilib = makeMultilib("/large");
1439
1440 Result.Multilibs.push_back(MSP430Multilib);
1441 Result.Multilibs.FilterOut(NonExistent);
1442
1443 Multilib::flags_list Flags;
1444 if (Result.Multilibs.select(Flags, Result.SelectedMultilib))
1445 return true;
1446
1447 return false;
1448 }
1449
findRISCVMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1450 static void findRISCVMultilibs(const Driver &D,
1451 const llvm::Triple &TargetTriple, StringRef Path,
1452 const ArgList &Args, DetectedMultilibs &Result) {
1453
1454 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1455 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32");
1456 Multilib Ilp32f =
1457 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f");
1458 Multilib Ilp32d =
1459 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d");
1460 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64");
1461 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f");
1462 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d");
1463 MultilibSet RISCVMultilibs =
1464 MultilibSet()
1465 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1466 .FilterOut(NonExistent);
1467
1468 Multilib::flags_list Flags;
1469 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1470 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1471
1472 addMultilibFlag(!IsRV64, "m32", Flags);
1473 addMultilibFlag(IsRV64, "m64", Flags);
1474 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags);
1475 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags);
1476 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags);
1477 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags);
1478 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags);
1479 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags);
1480
1481 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1482 Result.Multilibs = RISCVMultilibs;
1483 }
1484
findBiarchMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,bool NeedsBiarchSuffix,DetectedMultilibs & Result)1485 static bool findBiarchMultilibs(const Driver &D,
1486 const llvm::Triple &TargetTriple,
1487 StringRef Path, const ArgList &Args,
1488 bool NeedsBiarchSuffix,
1489 DetectedMultilibs &Result) {
1490 Multilib Default;
1491
1492 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1493 // in what would normally be GCCInstallPath and put the 64-bit
1494 // libs in a subdirectory named 64. The simple logic we follow is that
1495 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1496 // we use that. If not, and if not a biarch triple alias, we look for
1497 // crtbegin.o without the subdirectory.
1498
1499 StringRef Suff64 = "/64";
1500 // Solaris uses platform-specific suffixes instead of /64.
1501 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1502 switch (TargetTriple.getArch()) {
1503 case llvm::Triple::x86:
1504 case llvm::Triple::x86_64:
1505 Suff64 = "/amd64";
1506 break;
1507 case llvm::Triple::sparc:
1508 case llvm::Triple::sparcv9:
1509 Suff64 = "/sparcv9";
1510 break;
1511 default:
1512 break;
1513 }
1514 }
1515
1516 Multilib Alt64 = Multilib()
1517 .gccSuffix(Suff64)
1518 .includeSuffix(Suff64)
1519 .flag("-m32")
1520 .flag("+m64")
1521 .flag("-mx32");
1522 Multilib Alt32 = Multilib()
1523 .gccSuffix("/32")
1524 .includeSuffix("/32")
1525 .flag("+m32")
1526 .flag("-m64")
1527 .flag("-mx32");
1528 Multilib Altx32 = Multilib()
1529 .gccSuffix("/x32")
1530 .includeSuffix("/x32")
1531 .flag("-m32")
1532 .flag("-m64")
1533 .flag("+mx32");
1534
1535 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1536 FilterNonExistent NonExistent(
1537 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1538
1539 // Determine default multilib from: 32, 64, x32
1540 // Also handle cases such as 64 on 32, 32 on 64, etc.
1541 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1542 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32;
1543 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1544 Want = WANT64;
1545 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1546 Want = WANT64;
1547 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1548 Want = WANT32;
1549 else {
1550 if (TargetTriple.isArch32Bit())
1551 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1552 else if (IsX32)
1553 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1554 else
1555 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1556 }
1557
1558 if (Want == WANT32)
1559 Default.flag("+m32").flag("-m64").flag("-mx32");
1560 else if (Want == WANT64)
1561 Default.flag("-m32").flag("+m64").flag("-mx32");
1562 else if (Want == WANTX32)
1563 Default.flag("-m32").flag("-m64").flag("+mx32");
1564 else
1565 return false;
1566
1567 Result.Multilibs.push_back(Default);
1568 Result.Multilibs.push_back(Alt64);
1569 Result.Multilibs.push_back(Alt32);
1570 Result.Multilibs.push_back(Altx32);
1571
1572 Result.Multilibs.FilterOut(NonExistent);
1573
1574 Multilib::flags_list Flags;
1575 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1576 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1577 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1578
1579 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1580 return false;
1581
1582 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1583 Result.SelectedMultilib == Altx32)
1584 Result.BiarchSibling = Default;
1585
1586 return true;
1587 }
1588
1589 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1590 /// all subcommands; this relies on gcc translating the majority of
1591 /// command line options.
1592
1593 /// Less-than for GCCVersion, implementing a Strict Weak Ordering.
isOlderThan(int RHSMajor,int RHSMinor,int RHSPatch,StringRef RHSPatchSuffix) const1594 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1595 int RHSPatch,
1596 StringRef RHSPatchSuffix) const {
1597 if (Major != RHSMajor)
1598 return Major < RHSMajor;
1599 if (Minor != RHSMinor)
1600 return Minor < RHSMinor;
1601 if (Patch != RHSPatch) {
1602 // Note that versions without a specified patch sort higher than those with
1603 // a patch.
1604 if (RHSPatch == -1)
1605 return true;
1606 if (Patch == -1)
1607 return false;
1608
1609 // Otherwise just sort on the patch itself.
1610 return Patch < RHSPatch;
1611 }
1612 if (PatchSuffix != RHSPatchSuffix) {
1613 // Sort empty suffixes higher.
1614 if (RHSPatchSuffix.empty())
1615 return true;
1616 if (PatchSuffix.empty())
1617 return false;
1618
1619 // Provide a lexicographic sort to make this a total ordering.
1620 return PatchSuffix < RHSPatchSuffix;
1621 }
1622
1623 // The versions are equal.
1624 return false;
1625 }
1626
1627 /// Parse a GCCVersion object out of a string of text.
1628 ///
1629 /// This is the primary means of forming GCCVersion objects.
1630 /*static*/
Parse(StringRef VersionText)1631 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1632 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1633 std::pair<StringRef, StringRef> First = VersionText.split('.');
1634 std::pair<StringRef, StringRef> Second = First.second.split('.');
1635
1636 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1637 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
1638 return BadVersion;
1639 GoodVersion.MajorStr = First.first.str();
1640 if (First.second.empty())
1641 return GoodVersion;
1642 StringRef MinorStr = Second.first;
1643 if (Second.second.empty()) {
1644 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) {
1645 GoodVersion.PatchSuffix = MinorStr.substr(EndNumber);
1646 MinorStr = MinorStr.slice(0, EndNumber);
1647 }
1648 }
1649 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
1650 return BadVersion;
1651 GoodVersion.MinorStr = MinorStr.str();
1652
1653 // First look for a number prefix and parse that if present. Otherwise just
1654 // stash the entire patch string in the suffix, and leave the number
1655 // unspecified. This covers versions strings such as:
1656 // 5 (handled above)
1657 // 4.4
1658 // 4.4-patched
1659 // 4.4.0
1660 // 4.4.x
1661 // 4.4.2-rc4
1662 // 4.4.x-patched
1663 // And retains any patch number it finds.
1664 StringRef PatchText = Second.second;
1665 if (!PatchText.empty()) {
1666 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
1667 // Try to parse the number and any suffix.
1668 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
1669 GoodVersion.Patch < 0)
1670 return BadVersion;
1671 GoodVersion.PatchSuffix = PatchText.substr(EndNumber);
1672 }
1673 }
1674
1675 return GoodVersion;
1676 }
1677
getGCCToolchainDir(const ArgList & Args,llvm::StringRef SysRoot)1678 static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
1679 llvm::StringRef SysRoot) {
1680 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1681 if (A)
1682 return A->getValue();
1683
1684 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
1685 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
1686 // sysroot and is likely not valid with a different sysroot.
1687 if (!SysRoot.empty())
1688 return "";
1689
1690 return GCC_INSTALL_PREFIX;
1691 }
1692
1693 /// Initialize a GCCInstallationDetector from the driver.
1694 ///
1695 /// This performs all of the autodetection and sets up the various paths.
1696 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1697 ///
1698 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1699 /// should instead pull the target out of the driver. This is currently
1700 /// necessary because the driver doesn't store the final version of the target
1701 /// triple.
init(const llvm::Triple & TargetTriple,const ArgList & Args,ArrayRef<std::string> ExtraTripleAliases)1702 void Generic_GCC::GCCInstallationDetector::init(
1703 const llvm::Triple &TargetTriple, const ArgList &Args,
1704 ArrayRef<std::string> ExtraTripleAliases) {
1705 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
1706 ? TargetTriple.get64BitArchVariant()
1707 : TargetTriple.get32BitArchVariant();
1708 // The library directories which may contain GCC installations.
1709 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
1710 // The compatible GCC triples for this particular architecture.
1711 SmallVector<StringRef, 16> CandidateTripleAliases;
1712 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
1713 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
1714 CandidateTripleAliases, CandidateBiarchLibDirs,
1715 CandidateBiarchTripleAliases);
1716
1717 // Compute the set of prefixes for our search.
1718 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
1719 D.PrefixDirs.end());
1720
1721 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot);
1722 if (GCCToolchainDir != "") {
1723 if (GCCToolchainDir.back() == '/')
1724 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
1725
1726 Prefixes.push_back(GCCToolchainDir);
1727 } else {
1728 // If we have a SysRoot, try that first.
1729 if (!D.SysRoot.empty()) {
1730 Prefixes.push_back(D.SysRoot);
1731 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
1732 }
1733
1734 // Then look for gcc installed alongside clang.
1735 Prefixes.push_back(D.InstalledDir + "/..");
1736
1737 // Next, look for prefix(es) that correspond to distribution-supplied gcc
1738 // installations.
1739 if (D.SysRoot.empty()) {
1740 // Typically /usr.
1741 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
1742 }
1743 }
1744
1745 // Try to respect gcc-config on Gentoo. However, do that only
1746 // if --gcc-toolchain is not provided or equal to the Gentoo install
1747 // in /usr. This avoids accidentally enforcing the system GCC version
1748 // when using a custom toolchain.
1749 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") {
1750 SmallVector<StringRef, 16> GentooTestTriples;
1751 // Try to match an exact triple as target triple first.
1752 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
1753 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
1754 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
1755 // triple x86_64-gentoo-linux-gnu is present.
1756 GentooTestTriples.push_back(TargetTriple.str());
1757 // Check rest of triples.
1758 GentooTestTriples.append(ExtraTripleAliases.begin(),
1759 ExtraTripleAliases.end());
1760 GentooTestTriples.append(CandidateTripleAliases.begin(),
1761 CandidateTripleAliases.end());
1762 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples,
1763 CandidateBiarchTripleAliases))
1764 return;
1765 }
1766
1767 // Loop over the various components which exist and select the best GCC
1768 // installation available. GCC installs are ranked by version number.
1769 Version = GCCVersion::Parse("0.0.0");
1770 for (const std::string &Prefix : Prefixes) {
1771 if (!D.getVFS().exists(Prefix))
1772 continue;
1773 for (StringRef Suffix : CandidateLibDirs) {
1774 const std::string LibDir = Prefix + Suffix.str();
1775 if (!D.getVFS().exists(LibDir))
1776 continue;
1777 // Try to match the exact target triple first.
1778 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str());
1779 // Try rest of possible triples.
1780 for (StringRef Candidate : ExtraTripleAliases) // Try these first.
1781 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1782 for (StringRef Candidate : CandidateTripleAliases)
1783 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1784 }
1785 for (StringRef Suffix : CandidateBiarchLibDirs) {
1786 const std::string LibDir = Prefix + Suffix.str();
1787 if (!D.getVFS().exists(LibDir))
1788 continue;
1789 for (StringRef Candidate : CandidateBiarchTripleAliases)
1790 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate,
1791 /*NeedsBiarchSuffix=*/ true);
1792 }
1793 }
1794 }
1795
print(raw_ostream & OS) const1796 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
1797 for (const auto &InstallPath : CandidateGCCInstallPaths)
1798 OS << "Found candidate GCC installation: " << InstallPath << "\n";
1799
1800 if (!GCCInstallPath.empty())
1801 OS << "Selected GCC installation: " << GCCInstallPath << "\n";
1802
1803 for (const auto &Multilib : Multilibs)
1804 OS << "Candidate multilib: " << Multilib << "\n";
1805
1806 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
1807 OS << "Selected multilib: " << SelectedMultilib << "\n";
1808 }
1809
getBiarchSibling(Multilib & M) const1810 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
1811 if (BiarchSibling.hasValue()) {
1812 M = BiarchSibling.getValue();
1813 return true;
1814 }
1815 return false;
1816 }
1817
AddDefaultGCCPrefixes(const llvm::Triple & TargetTriple,SmallVectorImpl<std::string> & Prefixes,StringRef SysRoot)1818 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
1819 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
1820 StringRef SysRoot) {
1821 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1822 // Solaris is a special case.
1823 // The GCC installation is under
1824 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
1825 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
1826 // /usr/gcc/<version> as a prefix.
1827
1828 std::string PrefixDir = SysRoot.str() + "/usr/gcc";
1829 std::error_code EC;
1830 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC),
1831 LE;
1832 !EC && LI != LE; LI = LI.increment(EC)) {
1833 StringRef VersionText = llvm::sys::path::filename(LI->path());
1834 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
1835
1836 // Filter out obviously bad entries.
1837 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1))
1838 continue;
1839
1840 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
1841 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
1842 if (!D.getVFS().exists(CandidateLibPath))
1843 continue;
1844
1845 Prefixes.push_back(CandidatePrefix);
1846 }
1847 return;
1848 }
1849
1850 // Non-Solaris is much simpler - most systems just go with "/usr".
1851 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux) {
1852 // Yet, still look for RHEL devtoolsets.
1853 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
1854 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
1855 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
1856 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
1857 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
1858 }
1859 Prefixes.push_back(SysRoot.str() + "/usr");
1860 }
1861
CollectLibDirsAndTriples(const llvm::Triple & TargetTriple,const llvm::Triple & BiarchTriple,SmallVectorImpl<StringRef> & LibDirs,SmallVectorImpl<StringRef> & TripleAliases,SmallVectorImpl<StringRef> & BiarchLibDirs,SmallVectorImpl<StringRef> & BiarchTripleAliases)1862 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
1863 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
1864 SmallVectorImpl<StringRef> &LibDirs,
1865 SmallVectorImpl<StringRef> &TripleAliases,
1866 SmallVectorImpl<StringRef> &BiarchLibDirs,
1867 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
1868 // Declare a bunch of static data sets that we'll select between below. These
1869 // are specifically designed to always refer to string literals to avoid any
1870 // lifetime or initialization issues.
1871 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
1872 static const char *const AArch64Triples[] = {
1873 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux",
1874 "aarch64-suse-linux", "aarch64-linux-android"};
1875 static const char *const AArch64beLibDirs[] = {"/lib"};
1876 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
1877 "aarch64_be-linux-gnu"};
1878
1879 static const char *const ARMLibDirs[] = {"/lib"};
1880 static const char *const ARMTriples[] = {"arm-linux-gnueabi",
1881 "arm-linux-androideabi"};
1882 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
1883 "armv7hl-redhat-linux-gnueabi",
1884 "armv6hl-suse-linux-gnueabi",
1885 "armv7hl-suse-linux-gnueabi"};
1886 static const char *const ARMebLibDirs[] = {"/lib"};
1887 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi",
1888 "armeb-linux-androideabi"};
1889 static const char *const ARMebHFTriples[] = {
1890 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
1891
1892 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
1893 static const char *const X86_64Triples[] = {
1894 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
1895 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
1896 "x86_64-redhat-linux", "x86_64-suse-linux",
1897 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
1898 "x86_64-slackware-linux", "x86_64-unknown-linux",
1899 "x86_64-amazon-linux", "x86_64-linux-android"};
1900 static const char *const X32LibDirs[] = {"/libx32"};
1901 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
1902 static const char *const X86Triples[] = {
1903 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu",
1904 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux",
1905 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux",
1906 "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu",
1907 "i686-linux-android", "i386-gnu", "i486-gnu",
1908 "i586-gnu", "i686-gnu"};
1909
1910 static const char *const MIPSLibDirs[] = {"/lib"};
1911 static const char *const MIPSTriples[] = {
1912 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
1913 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
1914 static const char *const MIPSELLibDirs[] = {"/lib"};
1915 static const char *const MIPSELTriples[] = {
1916 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu",
1917 "mipsel-linux-android"};
1918
1919 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
1920 static const char *const MIPS64Triples[] = {
1921 "mips64-linux-gnu", "mips-mti-linux-gnu",
1922 "mips-img-linux-gnu", "mips64-linux-gnuabi64",
1923 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
1924 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
1925 static const char *const MIPS64ELTriples[] = {
1926 "mips64el-linux-gnu", "mips-mti-linux-gnu",
1927 "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
1928 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64",
1929 "mips64el-linux-android"};
1930
1931 static const char *const MIPSN32LibDirs[] = {"/lib32"};
1932 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
1933 "mipsisa64r6-linux-gnuabin32"};
1934 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
1935 static const char *const MIPSN32ELTriples[] = {
1936 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
1937
1938 static const char *const MSP430LibDirs[] = {"/lib"};
1939 static const char *const MSP430Triples[] = {"msp430-elf"};
1940
1941 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
1942 static const char *const PPCTriples[] = {
1943 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
1944 "powerpc-suse-linux", "powerpc-montavista-linuxspe"};
1945 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
1946 static const char *const PPC64Triples[] = {
1947 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
1948 "powerpc64-suse-linux", "ppc64-redhat-linux"};
1949 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
1950 static const char *const PPC64LETriples[] = {
1951 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
1952 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
1953
1954 static const char *const RISCV32LibDirs[] = {"/lib", "/lib32"};
1955 static const char *const RISCVTriples[] = {"riscv32-unknown-linux-gnu",
1956 "riscv64-unknown-linux-gnu",
1957 "riscv32-unknown-elf"};
1958
1959 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
1960 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
1961 "sparcv8-linux-gnu"};
1962 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
1963 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
1964 "sparcv9-linux-gnu"};
1965
1966 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
1967 static const char *const SystemZTriples[] = {
1968 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
1969 "s390x-suse-linux", "s390x-redhat-linux"};
1970
1971
1972 using std::begin;
1973 using std::end;
1974
1975 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1976 static const char *const SolarisLibDirs[] = {"/lib"};
1977 static const char *const SolarisSparcV8Triples[] = {
1978 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"};
1979 static const char *const SolarisSparcV9Triples[] = {
1980 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"};
1981 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11",
1982 "i386-pc-solaris2.12"};
1983 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11",
1984 "x86_64-pc-solaris2.12"};
1985 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
1986 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
1987 switch (TargetTriple.getArch()) {
1988 case llvm::Triple::x86:
1989 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples));
1990 BiarchTripleAliases.append(begin(SolarisX86_64Triples),
1991 end(SolarisX86_64Triples));
1992 break;
1993 case llvm::Triple::x86_64:
1994 TripleAliases.append(begin(SolarisX86_64Triples),
1995 end(SolarisX86_64Triples));
1996 BiarchTripleAliases.append(begin(SolarisX86Triples),
1997 end(SolarisX86Triples));
1998 break;
1999 case llvm::Triple::sparc:
2000 TripleAliases.append(begin(SolarisSparcV8Triples),
2001 end(SolarisSparcV8Triples));
2002 BiarchTripleAliases.append(begin(SolarisSparcV9Triples),
2003 end(SolarisSparcV9Triples));
2004 break;
2005 case llvm::Triple::sparcv9:
2006 TripleAliases.append(begin(SolarisSparcV9Triples),
2007 end(SolarisSparcV9Triples));
2008 BiarchTripleAliases.append(begin(SolarisSparcV8Triples),
2009 end(SolarisSparcV8Triples));
2010 break;
2011 default:
2012 break;
2013 }
2014 return;
2015 }
2016
2017 // Android targets should not use GNU/Linux tools or libraries.
2018 if (TargetTriple.isAndroid()) {
2019 static const char *const AArch64AndroidTriples[] = {
2020 "aarch64-linux-android"};
2021 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2022 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
2023 static const char *const MIPS64ELAndroidTriples[] = {
2024 "mips64el-linux-android"};
2025 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2026 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2027
2028 switch (TargetTriple.getArch()) {
2029 case llvm::Triple::aarch64:
2030 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2031 TripleAliases.append(begin(AArch64AndroidTriples),
2032 end(AArch64AndroidTriples));
2033 break;
2034 case llvm::Triple::arm:
2035 case llvm::Triple::thumb:
2036 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2037 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples));
2038 break;
2039 case llvm::Triple::mipsel:
2040 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2041 TripleAliases.append(begin(MIPSELAndroidTriples),
2042 end(MIPSELAndroidTriples));
2043 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2044 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
2045 end(MIPS64ELAndroidTriples));
2046 break;
2047 case llvm::Triple::mips64el:
2048 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2049 TripleAliases.append(begin(MIPS64ELAndroidTriples),
2050 end(MIPS64ELAndroidTriples));
2051 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2052 BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
2053 end(MIPSELAndroidTriples));
2054 break;
2055 case llvm::Triple::x86_64:
2056 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2057 TripleAliases.append(begin(X86_64AndroidTriples),
2058 end(X86_64AndroidTriples));
2059 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2060 BiarchTripleAliases.append(begin(X86AndroidTriples),
2061 end(X86AndroidTriples));
2062 break;
2063 case llvm::Triple::x86:
2064 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2065 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples));
2066 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2067 BiarchTripleAliases.append(begin(X86_64AndroidTriples),
2068 end(X86_64AndroidTriples));
2069 break;
2070 default:
2071 break;
2072 }
2073
2074 return;
2075 }
2076
2077 switch (TargetTriple.getArch()) {
2078 case llvm::Triple::aarch64:
2079 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2080 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2081 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2082 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2083 break;
2084 case llvm::Triple::aarch64_be:
2085 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2086 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2087 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2088 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2089 break;
2090 case llvm::Triple::arm:
2091 case llvm::Triple::thumb:
2092 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2093 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2094 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
2095 } else {
2096 TripleAliases.append(begin(ARMTriples), end(ARMTriples));
2097 }
2098 break;
2099 case llvm::Triple::armeb:
2100 case llvm::Triple::thumbeb:
2101 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
2102 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2103 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
2104 } else {
2105 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
2106 }
2107 break;
2108 case llvm::Triple::x86_64:
2109 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2110 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2111 // x32 is always available when x86_64 is available, so adding it as
2112 // secondary arch with x86_64 triples
2113 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) {
2114 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2115 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2116 } else {
2117 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2118 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
2119 }
2120 break;
2121 case llvm::Triple::x86:
2122 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2123 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2124 // itself, which will be appended below.
2125 if (!TargetTriple.isOSIAMCU()) {
2126 TripleAliases.append(begin(X86Triples), end(X86Triples));
2127 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2128 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2129 }
2130 break;
2131 case llvm::Triple::mips:
2132 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2133 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2134 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2135 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2136 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2137 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2138 break;
2139 case llvm::Triple::mipsel:
2140 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2141 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2142 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2143 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2144 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2145 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2146 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2147 break;
2148 case llvm::Triple::mips64:
2149 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2150 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2151 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2152 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2153 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2154 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2155 break;
2156 case llvm::Triple::mips64el:
2157 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2158 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2159 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2160 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2161 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2162 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2163 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2164 break;
2165 case llvm::Triple::msp430:
2166 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
2167 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
2168 break;
2169 case llvm::Triple::ppc:
2170 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2171 TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2172 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2173 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2174 break;
2175 case llvm::Triple::ppc64:
2176 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2177 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2178 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2179 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2180 break;
2181 case llvm::Triple::ppc64le:
2182 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2183 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2184 break;
2185 case llvm::Triple::riscv32:
2186 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2187 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2188 TripleAliases.append(begin(RISCVTriples), end(RISCVTriples));
2189 BiarchTripleAliases.append(begin(RISCVTriples), end(RISCVTriples));
2190 break;
2191 case llvm::Triple::sparc:
2192 case llvm::Triple::sparcel:
2193 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2194 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2195 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2196 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2197 break;
2198 case llvm::Triple::sparcv9:
2199 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2200 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2201 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2202 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2203 break;
2204 case llvm::Triple::systemz:
2205 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2206 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2207 break;
2208 default:
2209 // By default, just rely on the standard lib directories and the original
2210 // triple.
2211 break;
2212 }
2213
2214 // Always append the drivers target triple to the end, in case it doesn't
2215 // match any of our aliases.
2216 TripleAliases.push_back(TargetTriple.str());
2217
2218 // Also include the multiarch variant if it's different.
2219 if (TargetTriple.str() != BiarchTriple.str())
2220 BiarchTripleAliases.push_back(BiarchTriple.str());
2221 }
2222
ScanGCCForMultilibs(const llvm::Triple & TargetTriple,const ArgList & Args,StringRef Path,bool NeedsBiarchSuffix)2223 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2224 const llvm::Triple &TargetTriple, const ArgList &Args,
2225 StringRef Path, bool NeedsBiarchSuffix) {
2226 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2227 DetectedMultilibs Detected;
2228
2229 // Android standalone toolchain could have multilibs for ARM and Thumb.
2230 // Debian mips multilibs behave more like the rest of the biarch ones,
2231 // so handle them there
2232 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2233 // It should also work without multilibs in a simplified toolchain.
2234 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2235 } else if (TargetTriple.isMIPS()) {
2236 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2237 return false;
2238 } else if (isRISCV(TargetArch)) {
2239 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
2240 } else if (isMSP430(TargetArch)) {
2241 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
2242 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2243 NeedsBiarchSuffix, Detected)) {
2244 return false;
2245 }
2246
2247 Multilibs = Detected.Multilibs;
2248 SelectedMultilib = Detected.SelectedMultilib;
2249 BiarchSibling = Detected.BiarchSibling;
2250
2251 return true;
2252 }
2253
ScanLibDirForGCCTriple(const llvm::Triple & TargetTriple,const ArgList & Args,const std::string & LibDir,StringRef CandidateTriple,bool NeedsBiarchSuffix)2254 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2255 const llvm::Triple &TargetTriple, const ArgList &Args,
2256 const std::string &LibDir, StringRef CandidateTriple,
2257 bool NeedsBiarchSuffix) {
2258 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2259 // Locations relative to the system lib directory where GCC's triple-specific
2260 // directories might reside.
2261 struct GCCLibSuffix {
2262 // Path from system lib directory to GCC triple-specific directory.
2263 std::string LibSuffix;
2264 // Path from GCC triple-specific directory back to system lib directory.
2265 // This is one '..' component per component in LibSuffix.
2266 StringRef ReversePath;
2267 // Whether this library suffix is relevant for the triple.
2268 bool Active;
2269 } Suffixes[] = {
2270 // This is the normal place.
2271 {"gcc/" + CandidateTriple.str(), "../..", true},
2272
2273 // Debian puts cross-compilers in gcc-cross.
2274 {"gcc-cross/" + CandidateTriple.str(), "../..",
2275 TargetTriple.getOS() != llvm::Triple::Solaris},
2276
2277 // The Freescale PPC SDK has the gcc libraries in
2278 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2279 // this on Freescale triples, though, since some systems put a *lot* of
2280 // files in that location, not just GCC installation data.
2281 {CandidateTriple.str(), "..",
2282 TargetTriple.getVendor() == llvm::Triple::Freescale ||
2283 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded},
2284
2285 // Natively multiarch systems sometimes put the GCC triple-specific
2286 // directory within their multiarch lib directory, resulting in the
2287 // triple appearing twice.
2288 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..",
2289 TargetTriple.getOS() != llvm::Triple::Solaris},
2290
2291 // Deal with cases (on Ubuntu) where the system architecture could be i386
2292 // but the GCC target architecture could be (say) i686.
2293 // FIXME: It may be worthwhile to generalize this and look for a second
2294 // triple.
2295 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..",
2296 (TargetArch == llvm::Triple::x86 &&
2297 TargetTriple.getOS() != llvm::Triple::Solaris)},
2298 {"i386-gnu/gcc/" + CandidateTriple.str(), "../../..",
2299 (TargetArch == llvm::Triple::x86 &&
2300 TargetTriple.getOS() != llvm::Triple::Solaris)}};
2301
2302 for (auto &Suffix : Suffixes) {
2303 if (!Suffix.Active)
2304 continue;
2305
2306 StringRef LibSuffix = Suffix.LibSuffix;
2307 std::error_code EC;
2308 for (llvm::vfs::directory_iterator
2309 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2310 LE;
2311 !EC && LI != LE; LI = LI.increment(EC)) {
2312 StringRef VersionText = llvm::sys::path::filename(LI->path());
2313 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2314 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2315 if (!CandidateGCCInstallPaths.insert(LI->path()).second)
2316 continue; // Saw this path before; no need to look at it again.
2317 if (CandidateVersion.isOlderThan(4, 1, 1))
2318 continue;
2319 if (CandidateVersion <= Version)
2320 continue;
2321
2322 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(),
2323 NeedsBiarchSuffix))
2324 continue;
2325
2326 Version = CandidateVersion;
2327 GCCTriple.setTriple(CandidateTriple);
2328 // FIXME: We hack together the directory name here instead of
2329 // using LI to ensure stable path separators across Windows and
2330 // Linux.
2331 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2332 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2333 IsValid = true;
2334 }
2335 }
2336 }
2337
ScanGentooConfigs(const llvm::Triple & TargetTriple,const ArgList & Args,const SmallVectorImpl<StringRef> & CandidateTriples,const SmallVectorImpl<StringRef> & CandidateBiarchTriples)2338 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2339 const llvm::Triple &TargetTriple, const ArgList &Args,
2340 const SmallVectorImpl<StringRef> &CandidateTriples,
2341 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2342 for (StringRef CandidateTriple : CandidateTriples) {
2343 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2344 return true;
2345 }
2346
2347 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2348 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
2349 return true;
2350 }
2351 return false;
2352 }
2353
ScanGentooGccConfig(const llvm::Triple & TargetTriple,const ArgList & Args,StringRef CandidateTriple,bool NeedsBiarchSuffix)2354 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2355 const llvm::Triple &TargetTriple, const ArgList &Args,
2356 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2357 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2358 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" +
2359 CandidateTriple.str());
2360 if (File) {
2361 SmallVector<StringRef, 2> Lines;
2362 File.get()->getBuffer().split(Lines, "\n");
2363 for (StringRef Line : Lines) {
2364 Line = Line.trim();
2365 // CURRENT=triple-version
2366 if (!Line.consume_front("CURRENT="))
2367 continue;
2368 // Process the config file pointed to by CURRENT.
2369 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2370 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/" +
2371 Line.str());
2372 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-');
2373 // List of paths to scan for libraries.
2374 SmallVector<StringRef, 4> GentooScanPaths;
2375 // Scan the Config file to find installed GCC libraries path.
2376 // Typical content of the GCC config file:
2377 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2378 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2379 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2380 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2381 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2382 // We are looking for the paths listed in LDPATH=... .
2383 if (ConfigFile) {
2384 SmallVector<StringRef, 2> ConfigLines;
2385 ConfigFile.get()->getBuffer().split(ConfigLines, "\n");
2386 for (StringRef ConfLine : ConfigLines) {
2387 ConfLine = ConfLine.trim();
2388 if (ConfLine.consume_front("LDPATH=")) {
2389 // Drop '"' from front and back if present.
2390 ConfLine.consume_back("\"");
2391 ConfLine.consume_front("\"");
2392 // Get all paths sperated by ':'
2393 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false);
2394 }
2395 }
2396 }
2397 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2398 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2399 + ActiveVersion.second.str();
2400 GentooScanPaths.push_back(StringRef(basePath));
2401
2402 // Scan all paths for GCC libraries.
2403 for (const auto &GentooScanPath : GentooScanPaths) {
2404 std::string GentooPath = D.SysRoot + std::string(GentooScanPath);
2405 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2406 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2407 NeedsBiarchSuffix))
2408 continue;
2409
2410 Version = GCCVersion::Parse(ActiveVersion.second);
2411 GCCInstallPath = GentooPath;
2412 GCCParentLibPath = GentooPath + std::string("/../../..");
2413 GCCTriple.setTriple(ActiveVersion.first);
2414 IsValid = true;
2415 return true;
2416 }
2417 }
2418 }
2419 }
2420
2421 return false;
2422 }
2423
Generic_GCC(const Driver & D,const llvm::Triple & Triple,const ArgList & Args)2424 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2425 const ArgList &Args)
2426 : ToolChain(D, Triple, Args), GCCInstallation(D),
2427 CudaInstallation(D, Triple, Args) {
2428 getProgramPaths().push_back(getDriver().getInstalledDir());
2429 if (getDriver().getInstalledDir() != getDriver().Dir)
2430 getProgramPaths().push_back(getDriver().Dir);
2431 }
2432
~Generic_GCC()2433 Generic_GCC::~Generic_GCC() {}
2434
getTool(Action::ActionClass AC) const2435 Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
2436 switch (AC) {
2437 case Action::PreprocessJobClass:
2438 if (!Preprocess)
2439 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2440 return Preprocess.get();
2441 case Action::CompileJobClass:
2442 if (!Compile)
2443 Compile.reset(new tools::gcc::Compiler(*this));
2444 return Compile.get();
2445 default:
2446 return ToolChain::getTool(AC);
2447 }
2448 }
2449
buildAssembler() const2450 Tool *Generic_GCC::buildAssembler() const {
2451 return new tools::gnutools::Assembler(*this);
2452 }
2453
buildLinker() const2454 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2455
printVerboseInfo(raw_ostream & OS) const2456 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2457 // Print the information about how we detected the GCC installation.
2458 GCCInstallation.print(OS);
2459 CudaInstallation.print(OS);
2460 }
2461
IsUnwindTablesDefault(const ArgList & Args) const2462 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
2463 return getArch() == llvm::Triple::x86_64;
2464 }
2465
isPICDefault() const2466 bool Generic_GCC::isPICDefault() const {
2467 switch (getArch()) {
2468 case llvm::Triple::x86_64:
2469 return getTriple().isOSWindows();
2470 case llvm::Triple::ppc64:
2471 // Big endian PPC is PIC by default
2472 return !getTriple().isOSBinFormatMachO() && !getTriple().isMacOSX();
2473 case llvm::Triple::mips64:
2474 case llvm::Triple::mips64el:
2475 return true;
2476 default:
2477 return false;
2478 }
2479 }
2480
isPIEDefault() const2481 bool Generic_GCC::isPIEDefault() const { return false; }
2482
isPICDefaultForced() const2483 bool Generic_GCC::isPICDefaultForced() const {
2484 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2485 }
2486
IsIntegratedAssemblerDefault() const2487 bool Generic_GCC::IsIntegratedAssemblerDefault() const {
2488 switch (getTriple().getArch()) {
2489 case llvm::Triple::x86:
2490 case llvm::Triple::x86_64:
2491 case llvm::Triple::aarch64:
2492 case llvm::Triple::aarch64_be:
2493 case llvm::Triple::arm:
2494 case llvm::Triple::armeb:
2495 case llvm::Triple::avr:
2496 case llvm::Triple::bpfel:
2497 case llvm::Triple::bpfeb:
2498 case llvm::Triple::thumb:
2499 case llvm::Triple::thumbeb:
2500 case llvm::Triple::ppc:
2501 case llvm::Triple::ppc64:
2502 case llvm::Triple::ppc64le:
2503 case llvm::Triple::riscv32:
2504 case llvm::Triple::riscv64:
2505 case llvm::Triple::systemz:
2506 case llvm::Triple::mips:
2507 case llvm::Triple::mipsel:
2508 case llvm::Triple::mips64:
2509 case llvm::Triple::mips64el:
2510 case llvm::Triple::msp430:
2511 return true;
2512 case llvm::Triple::sparc:
2513 case llvm::Triple::sparcel:
2514 case llvm::Triple::sparcv9:
2515 if (getTriple().isOSSolaris() || getTriple().isOSOpenBSD())
2516 return true;
2517 return false;
2518 default:
2519 return false;
2520 }
2521 }
2522
AddClangCXXStdlibIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const2523 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
2524 ArgStringList &CC1Args) const {
2525 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
2526 DriverArgs.hasArg(options::OPT_nostdincxx))
2527 return;
2528
2529 switch (GetCXXStdlibType(DriverArgs)) {
2530 case ToolChain::CST_Libcxx:
2531 addLibCxxIncludePaths(DriverArgs, CC1Args);
2532 break;
2533
2534 case ToolChain::CST_Libstdcxx:
2535 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
2536 break;
2537 }
2538 }
2539
2540 void
addLibCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const2541 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2542 llvm::opt::ArgStringList &CC1Args) const {
2543 // FIXME: The Linux behavior would probaby be a better approach here.
2544 addSystemInclude(DriverArgs, CC1Args,
2545 getDriver().SysRoot + "/usr/include/c++/v1");
2546 }
2547
2548 void
addLibStdCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const2549 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2550 llvm::opt::ArgStringList &CC1Args) const {
2551 // By default, we don't assume we know where libstdc++ might be installed.
2552 // FIXME: If we have a valid GCCInstallation, use it.
2553 }
2554
2555 /// Helper to add the variant paths of a libstdc++ installation.
addLibStdCXXIncludePaths(Twine Base,Twine Suffix,StringRef GCCTriple,StringRef GCCMultiarchTriple,StringRef TargetMultiarchTriple,Twine IncludeSuffix,const ArgList & DriverArgs,ArgStringList & CC1Args) const2556 bool Generic_GCC::addLibStdCXXIncludePaths(
2557 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple,
2558 StringRef TargetMultiarchTriple, Twine IncludeSuffix,
2559 const ArgList &DriverArgs, ArgStringList &CC1Args) const {
2560 if (!getVFS().exists(Base + Suffix))
2561 return false;
2562
2563 addSystemInclude(DriverArgs, CC1Args, Base + Suffix);
2564
2565 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If
2566 // that path exists or we have neither a GCC nor target multiarch triple, use
2567 // this vanilla search path.
2568 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) ||
2569 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) {
2570 addSystemInclude(DriverArgs, CC1Args,
2571 Base + Suffix + "/" + GCCTriple + IncludeSuffix);
2572 } else {
2573 // Otherwise try to use multiarch naming schemes which have normalized the
2574 // triples and put the triple before the suffix.
2575 //
2576 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and
2577 // the target triple, so we support that here.
2578 addSystemInclude(DriverArgs, CC1Args,
2579 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix);
2580 addSystemInclude(DriverArgs, CC1Args,
2581 Base + "/" + TargetMultiarchTriple + Suffix);
2582 }
2583
2584 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward");
2585 return true;
2586 }
2587
2588 llvm::opt::DerivedArgList *
TranslateArgs(const llvm::opt::DerivedArgList & Args,StringRef,Action::OffloadKind DeviceOffloadKind) const2589 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
2590 Action::OffloadKind DeviceOffloadKind) const {
2591
2592 // If this tool chain is used for an OpenMP offloading device we have to make
2593 // sure we always generate a shared library regardless of the commands the
2594 // user passed to the host. This is required because the runtime library
2595 // is required to load the device image dynamically at run time.
2596 if (DeviceOffloadKind == Action::OFK_OpenMP) {
2597 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
2598 const OptTable &Opts = getDriver().getOpts();
2599
2600 // Request the shared library. Given that these options are decided
2601 // implicitly, they do not refer to any base argument.
2602 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
2603 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
2604
2605 // Filter all the arguments we don't care passing to the offloading
2606 // toolchain as they can mess up with the creation of a shared library.
2607 for (auto *A : Args) {
2608 switch ((options::ID)A->getOption().getID()) {
2609 default:
2610 DAL->append(A);
2611 break;
2612 case options::OPT_shared:
2613 case options::OPT_dynamic:
2614 case options::OPT_static:
2615 case options::OPT_fPIC:
2616 case options::OPT_fno_PIC:
2617 case options::OPT_fpic:
2618 case options::OPT_fno_pic:
2619 case options::OPT_fPIE:
2620 case options::OPT_fno_PIE:
2621 case options::OPT_fpie:
2622 case options::OPT_fno_pie:
2623 break;
2624 }
2625 }
2626 return DAL;
2627 }
2628 return nullptr;
2629 }
2630
anchor()2631 void Generic_ELF::anchor() {}
2632
addClangTargetOptions(const ArgList & DriverArgs,ArgStringList & CC1Args,Action::OffloadKind) const2633 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
2634 ArgStringList &CC1Args,
2635 Action::OffloadKind) const {
2636 const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion();
2637 bool UseInitArrayDefault =
2638 getTriple().getArch() == llvm::Triple::aarch64 ||
2639 getTriple().getArch() == llvm::Triple::aarch64_be ||
2640 (getTriple().isOSFreeBSD() &&
2641 getTriple().getOSMajorVersion() >= 12) ||
2642 (getTriple().getOS() == llvm::Triple::Linux &&
2643 ((!GCCInstallation.isValid() || !V.isOlderThan(4, 7, 0)) ||
2644 getTriple().isAndroid())) ||
2645 getTriple().getOS() == llvm::Triple::NaCl ||
2646 (getTriple().getVendor() == llvm::Triple::MipsTechnologies &&
2647 !getTriple().hasEnvironment()) ||
2648 getTriple().getOS() == llvm::Triple::Solaris ||
2649 getTriple().getArch() == llvm::Triple::riscv32 ||
2650 getTriple().getArch() == llvm::Triple::riscv64;
2651
2652 if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
2653 options::OPT_fno_use_init_array, UseInitArrayDefault))
2654 CC1Args.push_back("-fuse-init-array");
2655 }
2656