clang 10.0.0git

CommonArgs.cpp
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1 //===--- CommonArgs.cpp - Args handling for multiple toolchains -*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "CommonArgs.h"
10 #include "Arch/AArch64.h"
11 #include "Arch/ARM.h"
12 #include "Arch/Mips.h"
13 #include "Arch/PPC.h"
14 #include "Arch/SystemZ.h"
15 #include "Arch/X86.h"
16 #include "HIP.h"
17 #include "Hexagon.h"
18 #include "InputInfo.h"
19 #include "clang/Basic/CharInfo.h"
20 #include "clang/Basic/LangOptions.h"
21 #include "clang/Basic/ObjCRuntime.h"
22 #include "clang/Basic/Version.h"
23 #include "clang/Config/config.h"
24 #include "clang/Driver/Action.h"
25 #include "clang/Driver/Compilation.h"
26 #include "clang/Driver/Driver.h"
27 #include "clang/Driver/DriverDiagnostic.h"
28 #include "clang/Driver/Job.h"
29 #include "clang/Driver/Options.h"
30 #include "clang/Driver/SanitizerArgs.h"
31 #include "clang/Driver/ToolChain.h"
32 #include "clang/Driver/Util.h"
33 #include "clang/Driver/XRayArgs.h"
34 #include "llvm/ADT/STLExtras.h"
35 #include "llvm/ADT/SmallString.h"
36 #include "llvm/ADT/StringExtras.h"
37 #include "llvm/ADT/StringSwitch.h"
38 #include "llvm/ADT/Twine.h"
39 #include "llvm/Option/Arg.h"
40 #include "llvm/Option/ArgList.h"
41 #include "llvm/Option/Option.h"
42 #include "llvm/Support/CodeGen.h"
43 #include "llvm/Support/Compression.h"
44 #include "llvm/Support/Debug.h"
45 #include "llvm/Support/ErrorHandling.h"
46 #include "llvm/Support/FileSystem.h"
47 #include "llvm/Support/Host.h"
48 #include "llvm/Support/Path.h"
49 #include "llvm/Support/Process.h"
50 #include "llvm/Support/Program.h"
51 #include "llvm/Support/ScopedPrinter.h"
52 #include "llvm/Support/TargetParser.h"
53 #include "llvm/Support/VirtualFileSystem.h"
54 #include "llvm/Support/YAMLParser.h"
55
56 using namespace clang::driver;
57 using namespace clang::driver::tools;
58 using namespace clang;
59 using namespace llvm::opt;
60
61 void tools::addPathIfExists(const Driver &D, const Twine &Path,
62 ToolChain::path_list &Paths) {
63 if (D.getVFS().exists(Path))
64 Paths.push_back(Path.str());
65 }
66
67 void tools::handleTargetFeaturesGroup(const ArgList &Args,
68 std::vector<StringRef> &Features,
69 OptSpecifier Group) {
70 for (const Arg *A : Args.filtered(Group)) {
71 StringRef Name = A->getOption().getName();
72 A->claim();
73
74 // Skip over "-m".
75 assert(Name.startswith("m") && "Invalid feature name.");
76 Name = Name.substr(1);
77
78 bool IsNegative = Name.startswith("no-");
79 if (IsNegative)
80 Name = Name.substr(3);
81 Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
82 }
83 }
84
85 void tools::addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,
86 const char *ArgName, const char *EnvVar) {
87 const char *DirList = ::getenv(EnvVar);
88 bool CombinedArg = false;
89
90 if (!DirList)
91 return; // Nothing to do.
92
93 StringRef Name(ArgName);
94 if (Name.equals("-I") || Name.equals("-L"))
95 CombinedArg = true;
96
97 StringRef Dirs(DirList);
98 if (Dirs.empty()) // Empty string should not add '.'.
99 return;
100
101 StringRef::size_type Delim;
102 while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {
103 if (Delim == 0) { // Leading colon.
104 if (CombinedArg) {
105 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
106 } else {
107 CmdArgs.push_back(ArgName);
108 CmdArgs.push_back(".");
109 }
110 } else {
111 if (CombinedArg) {
112 CmdArgs.push_back(
113 Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
114 } else {
115 CmdArgs.push_back(ArgName);
116 CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
117 }
118 }
119 Dirs = Dirs.substr(Delim + 1);
120 }
121
122 if (Dirs.empty()) { // Trailing colon.
123 if (CombinedArg) {
124 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
125 } else {
126 CmdArgs.push_back(ArgName);
127 CmdArgs.push_back(".");
128 }
129 } else { // Add the last path.
130 if (CombinedArg) {
131 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
132 } else {
133 CmdArgs.push_back(ArgName);
134 CmdArgs.push_back(Args.MakeArgString(Dirs));
135 }
136 }
137 }
138
139 void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
140 const ArgList &Args, ArgStringList &CmdArgs,
141 const JobAction &JA) {
142 const Driver &D = TC.getDriver();
143
144 // Add extra linker input arguments which are not treated as inputs
145 // (constructed via -Xarch_).
146 Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
147
148 // LIBRARY_PATH are included before user inputs and only supported on native
149 // toolchains.
150 if (!TC.isCrossCompiling())
151 addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
152
153 for (const auto &II : Inputs) {
154 // If the current tool chain refers to an OpenMP or HIP offloading host, we
155 // should ignore inputs that refer to OpenMP or HIP offloading devices -
156 // they will be embedded according to a proper linker script.
157 if (auto *IA = II.getAction())
158 if ((JA.isHostOffloading(Action::OFK_OpenMP) &&
159 IA->isDeviceOffloading(Action::OFK_OpenMP)) ||
160 (JA.isHostOffloading(Action::OFK_HIP) &&
161 IA->isDeviceOffloading(Action::OFK_HIP)))
162 continue;
163
164 if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
165 // Don't try to pass LLVM inputs unless we have native support.
166 D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
167
168 // Add filenames immediately.
169 if (II.isFilename()) {
170 CmdArgs.push_back(II.getFilename());
171 continue;
172 }
173
174 // Otherwise, this is a linker input argument.
175 const Arg &A = II.getInputArg();
176
177 // Handle reserved library options.
178 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
179 TC.AddCXXStdlibLibArgs(Args, CmdArgs);
180 else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
181 TC.AddCCKextLibArgs(Args, CmdArgs);
182 else if (A.getOption().matches(options::OPT_z)) {
183 // Pass -z prefix for gcc linker compatibility.
184 A.claim();
185 A.render(Args, CmdArgs);
186 } else {
187 A.renderAsInput(Args, CmdArgs);
188 }
189 }
190 }
191
192 void tools::AddTargetFeature(const ArgList &Args,
193 std::vector<StringRef> &Features,
194 OptSpecifier OnOpt, OptSpecifier OffOpt,
195 StringRef FeatureName) {
196 if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {
197 if (A->getOption().matches(OnOpt))
198 Features.push_back(Args.MakeArgString("+" + FeatureName));
199 else
200 Features.push_back(Args.MakeArgString("-" + FeatureName));
201 }
202 }
203
204 /// Get the (LLVM) name of the R600 gpu we are targeting.
205 static std::string getR600TargetGPU(const ArgList &Args) {
206 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
207 const char *GPUName = A->getValue();
208 return llvm::StringSwitch<const char *>(GPUName)
209 .Cases("rv630", "rv635", "r600")
210 .Cases("rv610", "rv620", "rs780", "rs880")
211 .Case("rv740", "rv770")
212 .Case("palm", "cedar")
213 .Cases("sumo", "sumo2", "sumo")
214 .Case("hemlock", "cypress")
215 .Case("aruba", "cayman")
216 .Default(GPUName);
217 }
218 return "";
219 }
220
221 static std::string getLanaiTargetCPU(const ArgList &Args) {
222 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
223 return A->getValue();
224 }
225 return "";
226 }
227
228 /// Get the (LLVM) name of the WebAssembly cpu we are targeting.
229 static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
230 // If we have -mcpu=, use that.
231 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
232 StringRef CPU = A->getValue();
233
234 #ifdef __wasm__
235 // Handle "native" by examining the host. "native" isn't meaningful when
236 // cross compiling, so only support this when the host is also WebAssembly.
237 if (CPU == "native")
238 return llvm::sys::getHostCPUName();
239 #endif
240
241 return CPU;
242 }
243
244 return "generic";
245 }
246
247 std::string tools::getCPUName(const ArgList &Args, const llvm::Triple &T,
248 bool FromAs) {
249 Arg *A;
250
251 switch (T.getArch()) {
252 default:
253 return "";
254
255 case llvm::Triple::aarch64:
256 case llvm::Triple::aarch64_32:
257 case llvm::Triple::aarch64_be:
258 return aarch64::getAArch64TargetCPU(Args, T, A);
259
260 case llvm::Triple::arm:
261 case llvm::Triple::armeb:
262 case llvm::Triple::thumb:
263 case llvm::Triple::thumbeb: {
264 StringRef MArch, MCPU;
265 arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
266 return arm::getARMTargetCPU(MCPU, MArch, T);
267 }
268
269 case llvm::Triple::avr:
270 if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))
271 return A->getValue();
272 return "";
273
274 case llvm::Triple::mips:
275 case llvm::Triple::mipsel:
276 case llvm::Triple::mips64:
277 case llvm::Triple::mips64el: {
278 StringRef CPUName;
279 StringRef ABIName;
280 mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
281 return CPUName;
282 }
283
284 case llvm::Triple::nvptx:
285 case llvm::Triple::nvptx64:
286 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
287 return A->getValue();
288 return "";
289
290 case llvm::Triple::ppc:
291 case llvm::Triple::ppc64:
292 case llvm::Triple::ppc64le: {
293 std::string TargetCPUName = ppc::getPPCTargetCPU(Args);
294 // LLVM may default to generating code for the native CPU,
295 // but, like gcc, we default to a more generic option for
296 // each architecture. (except on Darwin)
297 if (TargetCPUName.empty() && !T.isOSDarwin()) {
298 if (T.getArch() == llvm::Triple::ppc64)
299 TargetCPUName = "ppc64";
300 else if (T.getArch() == llvm::Triple::ppc64le)
301 TargetCPUName = "ppc64le";
302 else
303 TargetCPUName = "ppc";
304 }
305 return TargetCPUName;
306 }
307
308 case llvm::Triple::bpfel:
309 case llvm::Triple::bpfeb:
310 case llvm::Triple::sparc:
311 case llvm::Triple::sparcel:
312 case llvm::Triple::sparcv9:
313 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
314 return A->getValue();
315 return "";
316
317 case llvm::Triple::x86:
318 case llvm::Triple::x86_64:
319 return x86::getX86TargetCPU(Args, T);
320
321 case llvm::Triple::hexagon:
322 return "hexagon" +
323 toolchains::HexagonToolChain::GetTargetCPUVersion(Args).str();
324
325 case llvm::Triple::lanai:
326 return getLanaiTargetCPU(Args);
327
328 case llvm::Triple::systemz:
329 return systemz::getSystemZTargetCPU(Args);
330
331 case llvm::Triple::r600:
332 case llvm::Triple::amdgcn:
333 return getR600TargetGPU(Args);
334
335 case llvm::Triple::wasm32:
336 case llvm::Triple::wasm64:
337 return getWebAssemblyTargetCPU(Args);
338 }
339 }
340
341 unsigned tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
342 unsigned Parallelism = 0;
343 Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
344 if (LtoJobsArg &&
345 StringRef(LtoJobsArg->getValue()).getAsInteger(10, Parallelism))
346 D.Diag(diag::err_drv_invalid_int_value) << LtoJobsArg->getAsString(Args)
347 << LtoJobsArg->getValue();
348 return Parallelism;
349 }
350
351 // CloudABI uses -ffunction-sections and -fdata-sections by default.
352 bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
353 return Triple.getOS() == llvm::Triple::CloudABI;
354 }
355
356 void tools::AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
357 ArgStringList &CmdArgs, const InputInfo &Output,
358 const InputInfo &Input, bool IsThinLTO) {
359 // Tell the linker to load the plugin. This has to come before AddLinkerInputs
360 // as gold requires -plugin to come before any -plugin-opt that -Wl might
361 // forward.
362 CmdArgs.push_back("-plugin");
363
364 #if defined(_WIN32)
365 const char *Suffix = ".dll";
366 #elif defined(__APPLE__)
367 const char *Suffix = ".dylib";
368 #else
369 const char *Suffix = ".so";
370 #endif
371
372 SmallString<1024> Plugin;
373 llvm::sys::path::native(Twine(ToolChain.getDriver().Dir) +
374 "/../lib" CLANG_LIBDIR_SUFFIX "/LLVMgold" +
375 Suffix,
376 Plugin);
377 CmdArgs.push_back(Args.MakeArgString(Plugin));
378
379 // Try to pass driver level flags relevant to LTO code generation down to
380 // the plugin.
381
382 // Handle flags for selecting CPU variants.
383 std::string CPU = getCPUName(Args, ToolChain.getTriple());
384 if (!CPU.empty())
385 CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
386
387 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
388 StringRef OOpt;
389 if (A->getOption().matches(options::OPT_O4) ||
390 A->getOption().matches(options::OPT_Ofast))
391 OOpt = "3";
392 else if (A->getOption().matches(options::OPT_O))
393 OOpt = A->getValue();
394 else if (A->getOption().matches(options::OPT_O0))
395 OOpt = "0";
396 if (!OOpt.empty())
397 CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
398 }
399
400 if (Args.hasArg(options::OPT_gsplit_dwarf)) {
401 CmdArgs.push_back(
402 Args.MakeArgString(Twine("-plugin-opt=dwo_dir=") +
403 Output.getFilename() + "_dwo"));
404 }
405
406 if (IsThinLTO)
407 CmdArgs.push_back("-plugin-opt=thinlto");
408
409 if (unsigned Parallelism = getLTOParallelism(Args, ToolChain.getDriver()))
410 CmdArgs.push_back(
411 Args.MakeArgString("-plugin-opt=jobs=" + Twine(Parallelism)));
412
413 // If an explicit debugger tuning argument appeared, pass it along.
414 if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
415 options::OPT_ggdbN_Group)) {
416 if (A->getOption().matches(options::OPT_glldb))
417 CmdArgs.push_back("-plugin-opt=-debugger-tune=lldb");
418 else if (A->getOption().matches(options::OPT_gsce))
419 CmdArgs.push_back("-plugin-opt=-debugger-tune=sce");
420 else
421 CmdArgs.push_back("-plugin-opt=-debugger-tune=gdb");
422 }
423
424 bool UseSeparateSections =
425 isUseSeparateSections(ToolChain.getEffectiveTriple());
426
427 if (Args.hasFlag(options::OPT_ffunction_sections,
428 options::OPT_fno_function_sections, UseSeparateSections)) {
429 CmdArgs.push_back("-plugin-opt=-function-sections");
430 }
431
432 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
433 UseSeparateSections)) {
434 CmdArgs.push_back("-plugin-opt=-data-sections");
435 }
436
437 if (Arg *A = getLastProfileSampleUseArg(Args)) {
438 StringRef FName = A->getValue();
439 if (!llvm::sys::fs::exists(FName))
440 ToolChain.getDriver().Diag(diag::err_drv_no_such_file) << FName;
441 else
442 CmdArgs.push_back(
443 Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
444 }
445
446 auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
447 options::OPT_fcs_profile_generate_EQ,
448 options::OPT_fno_profile_generate);
449 if (CSPGOGenerateArg &&
450 CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
451 CSPGOGenerateArg = nullptr;
452
453 auto *ProfileUseArg = getLastProfileUseArg(Args);
454
455 if (CSPGOGenerateArg) {
456 CmdArgs.push_back(Args.MakeArgString("-plugin-opt=cs-profile-generate"));
457 if (CSPGOGenerateArg->getOption().matches(
458 options::OPT_fcs_profile_generate_EQ)) {
459 SmallString<128> Path(CSPGOGenerateArg->getValue());
460 llvm::sys::path::append(Path, "default_%m.profraw");
461 CmdArgs.push_back(
462 Args.MakeArgString(Twine("-plugin-opt=cs-profile-path=") + Path));
463 } else
464 CmdArgs.push_back(
465 Args.MakeArgString("-plugin-opt=cs-profile-path=default_%m.profraw"));
466 } else if (ProfileUseArg) {
467 SmallString<128> Path(
468 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
469 if (Path.empty() || llvm::sys::fs::is_directory(Path))
470 llvm::sys::path::append(Path, "default.profdata");
471 CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=cs-profile-path=") +
472 Path));
473 }
474
475 // Need this flag to turn on new pass manager via Gold plugin.
476 if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
477 options::OPT_fno_experimental_new_pass_manager,
478 /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER)) {
479 CmdArgs.push_back("-plugin-opt=new-pass-manager");
480 }
481
482 // Setup statistics file output.
483 SmallString<128> StatsFile =
484 getStatsFileName(Args, Output, Input, ToolChain.getDriver());
485 if (!StatsFile.empty())
486 CmdArgs.push_back(
487 Args.MakeArgString(Twine("-plugin-opt=stats-file=") + StatsFile));
488 }
489
490 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
491 ArgStringList &CmdArgs) {
492 if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
493 options::OPT_fno_rtlib_add_rpath, false))
494 return;
495
496 std::string CandidateRPath = TC.getArchSpecificLibPath();
497 if (TC.getVFS().exists(CandidateRPath)) {
498 CmdArgs.push_back("-rpath");
499 CmdArgs.push_back(Args.MakeArgString(CandidateRPath.c_str()));
500 }
501 }
502
503 bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
504 const ArgList &Args, bool ForceStaticHostRuntime,
505 bool IsOffloadingHost, bool GompNeedsRT) {
506 if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
507 options::OPT_fno_openmp, false))
508 return false;
509
510 Driver::OpenMPRuntimeKind RTKind = TC.getDriver().getOpenMPRuntime(Args);
511
512 if (RTKind == Driver::OMPRT_Unknown)
513 // Already diagnosed.
514 return false;
515
516 if (ForceStaticHostRuntime)
517 CmdArgs.push_back("-Bstatic");
518
519 switch (RTKind) {
520 case Driver::OMPRT_OMP:
521 CmdArgs.push_back("-lomp");
522 break;
523 case Driver::OMPRT_GOMP:
524 CmdArgs.push_back("-lgomp");
525 break;
526 case Driver::OMPRT_IOMP5:
527 CmdArgs.push_back("-liomp5");
528 break;
529 case Driver::OMPRT_Unknown:
530 break;
531 }
532
533 if (ForceStaticHostRuntime)
534 CmdArgs.push_back("-Bdynamic");
535
536 if (RTKind == Driver::OMPRT_GOMP && GompNeedsRT)
537 CmdArgs.push_back("-lrt");
538
539 if (IsOffloadingHost)
540 CmdArgs.push_back("-lomptarget");
541
542 addArchSpecificRPath(TC, Args, CmdArgs);
543
544 return true;
545 }
546
547 static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
548 ArgStringList &CmdArgs, StringRef Sanitizer,
549 bool IsShared, bool IsWhole) {
550 // Wrap any static runtimes that must be forced into executable in
551 // whole-archive.
552 if (IsWhole) CmdArgs.push_back("--whole-archive");
553 CmdArgs.push_back(TC.getCompilerRTArgString(
554 Args, Sanitizer, IsShared ? ToolChain::FT_Shared : ToolChain::FT_Static));
555 if (IsWhole) CmdArgs.push_back("--no-whole-archive");
556
557 if (IsShared) {
558 addArchSpecificRPath(TC, Args, CmdArgs);
559 }
560 }
561
562 // Tries to use a file with the list of dynamic symbols that need to be exported
563 // from the runtime library. Returns true if the file was found.
564 static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
565 ArgStringList &CmdArgs,
566 StringRef Sanitizer) {
567 // Solaris ld defaults to --export-dynamic behaviour but doesn't support
568 // the option, so don't try to pass it.
569 if (TC.getTriple().getOS() == llvm::Triple::Solaris)
570 return true;
571 // Myriad is static linking only. Furthermore, some versions of its
572 // linker have the bug where --export-dynamic overrides -static, so
573 // don't use --export-dynamic on that platform.
574 if (TC.getTriple().getVendor() == llvm::Triple::Myriad)
575 return true;
576 SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
577 if (llvm::sys::fs::exists(SanRT + ".syms")) {
578 CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
579 return true;
580 }
581 return false;
582 }
583
584 void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
585 ArgStringList &CmdArgs) {
586 // Force linking against the system libraries sanitizers depends on
587 // (see PR15823 why this is necessary).
588 CmdArgs.push_back("--no-as-needed");
589 // There's no libpthread or librt on RTEMS & Android.
590 if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&
591 !TC.getTriple().isAndroid()) {
592 CmdArgs.push_back("-lpthread");
593 if (!TC.getTriple().isOSOpenBSD())
594 CmdArgs.push_back("-lrt");
595 }
596 CmdArgs.push_back("-lm");
597 // There's no libdl on all OSes.
598 if (!TC.getTriple().isOSFreeBSD() &&
599 !TC.getTriple().isOSNetBSD() &&
600 !TC.getTriple().isOSOpenBSD() &&
601 TC.getTriple().getOS() != llvm::Triple::RTEMS)
602 CmdArgs.push_back("-ldl");
603 // Required for backtrace on some OSes
604 if (TC.getTriple().isOSFreeBSD() ||
605 TC.getTriple().isOSNetBSD())
606 CmdArgs.push_back("-lexecinfo");
607 }
608
609 static void
610 collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
611 SmallVectorImpl<StringRef> &SharedRuntimes,
612 SmallVectorImpl<StringRef> &StaticRuntimes,
613 SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
614 SmallVectorImpl<StringRef> &HelperStaticRuntimes,
615 SmallVectorImpl<StringRef> &RequiredSymbols) {
616 const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
617 // Collect shared runtimes.
618 if (SanArgs.needsSharedRt()) {
619 if (SanArgs.needsAsanRt() && SanArgs.linkRuntimes()) {
620 SharedRuntimes.push_back("asan");
621 if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
622 HelperStaticRuntimes.push_back("asan-preinit");
623 }
624 if (SanArgs.needsUbsanRt() && SanArgs.linkRuntimes()) {
625 if (SanArgs.requiresMinimalRuntime())
626 SharedRuntimes.push_back("ubsan_minimal");
627 else
628 SharedRuntimes.push_back("ubsan_standalone");
629 }
630 if (SanArgs.needsScudoRt() && SanArgs.linkRuntimes()) {
631 if (SanArgs.requiresMinimalRuntime())
632 SharedRuntimes.push_back("scudo_minimal");
633 else
634 SharedRuntimes.push_back("scudo");
635 }
636 if (SanArgs.needsHwasanRt() && SanArgs.linkRuntimes())
637 SharedRuntimes.push_back("hwasan");
638 }
639
640 // The stats_client library is also statically linked into DSOs.
641 if (SanArgs.needsStatsRt() && SanArgs.linkRuntimes())
642 StaticRuntimes.push_back("stats_client");
643
644 // Collect static runtimes.
645 if (Args.hasArg(options::OPT_shared) || SanArgs.needsSharedRt()) {
646 // Don't link static runtimes into DSOs or if -shared-libasan.
647 return;
648 }
649 if (SanArgs.needsAsanRt() && SanArgs.linkRuntimes()) {
650 StaticRuntimes.push_back("asan");
651 if (SanArgs.linkCXXRuntimes())
652 StaticRuntimes.push_back("asan_cxx");
653 }
654
655 if (SanArgs.needsHwasanRt() && SanArgs.linkRuntimes()) {
656 StaticRuntimes.push_back("hwasan");
657 if (SanArgs.linkCXXRuntimes())
658 StaticRuntimes.push_back("hwasan_cxx");
659 }
660 if (SanArgs.needsDfsanRt() && SanArgs.linkRuntimes())
661 StaticRuntimes.push_back("dfsan");
662 if (SanArgs.needsLsanRt() && SanArgs.linkRuntimes())
663 StaticRuntimes.push_back("lsan");
664 if (SanArgs.needsMsanRt() && SanArgs.linkRuntimes()) {
665 StaticRuntimes.push_back("msan");
666 if (SanArgs.linkCXXRuntimes())
667 StaticRuntimes.push_back("msan_cxx");
668 }
669 if (SanArgs.needsTsanRt() && SanArgs.linkRuntimes()) {
670 StaticRuntimes.push_back("tsan");
671 if (SanArgs.linkCXXRuntimes())
672 StaticRuntimes.push_back("tsan_cxx");
673 }
674 if (SanArgs.needsUbsanRt() && SanArgs.linkRuntimes()) {
675 if (SanArgs.requiresMinimalRuntime()) {
676 StaticRuntimes.push_back("ubsan_minimal");
677 } else {
678 StaticRuntimes.push_back("ubsan_standalone");
679 if (SanArgs.linkCXXRuntimes())
680 StaticRuntimes.push_back("ubsan_standalone_cxx");
681 }
682 }
683 if (SanArgs.needsSafeStackRt() && SanArgs.linkRuntimes()) {
684 NonWholeStaticRuntimes.push_back("safestack");
685 RequiredSymbols.push_back("__safestack_init");
686 }
687 if (SanArgs.needsCfiRt() && SanArgs.linkRuntimes())
688 StaticRuntimes.push_back("cfi");
689 if (SanArgs.needsCfiDiagRt() && SanArgs.linkRuntimes()) {
690 StaticRuntimes.push_back("cfi_diag");
691 if (SanArgs.linkCXXRuntimes())
692 StaticRuntimes.push_back("ubsan_standalone_cxx");
693 }
694 if (SanArgs.needsStatsRt() && SanArgs.linkRuntimes()) {
695 NonWholeStaticRuntimes.push_back("stats");
696 RequiredSymbols.push_back("__sanitizer_stats_register");
697 }
698 if (SanArgs.needsScudoRt() && SanArgs.linkRuntimes()) {
699 if (SanArgs.requiresMinimalRuntime()) {
700 StaticRuntimes.push_back("scudo_minimal");
701 if (SanArgs.linkCXXRuntimes())
702 StaticRuntimes.push_back("scudo_cxx_minimal");
703 } else {
704 StaticRuntimes.push_back("scudo");
705 if (SanArgs.linkCXXRuntimes())
706 StaticRuntimes.push_back("scudo_cxx");
707 }
708 }
709 }
710
711 // Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
712 // C runtime, etc). Returns true if sanitizer system deps need to be linked in.
713 bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
714 ArgStringList &CmdArgs) {
715 SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
716 NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
717 collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
718 NonWholeStaticRuntimes, HelperStaticRuntimes,
719 RequiredSymbols);
720
721 const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
722 // Inject libfuzzer dependencies.
723 if (SanArgs.needsFuzzer() && SanArgs.linkRuntimes() &&
724 !Args.hasArg(options::OPT_shared)) {
725
726 addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
727 if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx))
728 TC.AddCXXStdlibLibArgs(Args, CmdArgs);
729 }
730
731 for (auto RT : SharedRuntimes)
732 addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
733 for (auto RT : HelperStaticRuntimes)
734 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
735 bool AddExportDynamic = false;
736 for (auto RT : StaticRuntimes) {
737 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
738 AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
739 }
740 for (auto RT : NonWholeStaticRuntimes) {
741 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
742 AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
743 }
744 for (auto S : RequiredSymbols) {
745 CmdArgs.push_back("-u");
746 CmdArgs.push_back(Args.MakeArgString(S));
747 }
748 // If there is a static runtime with no dynamic list, force all the symbols
749 // to be dynamic to be sure we export sanitizer interface functions.
750 if (AddExportDynamic)
751 CmdArgs.push_back("--export-dynamic");
752
753 if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
754 CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
755
756 return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
757 }
758
759 bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {
760 if (Args.hasArg(options::OPT_shared))
761 return false;
762
763 if (TC.getXRayArgs().needsXRayRt()) {
764 CmdArgs.push_back("-whole-archive");
765 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray"));
766 for (const auto &Mode : TC.getXRayArgs().modeList())
767 CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode));
768 CmdArgs.push_back("-no-whole-archive");
769 return true;
770 }
771
772 return false;
773 }
774
775 void tools::linkXRayRuntimeDeps(const ToolChain &TC, ArgStringList &CmdArgs) {
776 CmdArgs.push_back("--no-as-needed");
777 CmdArgs.push_back("-lpthread");
778 if (!TC.getTriple().isOSOpenBSD())
779 CmdArgs.push_back("-lrt");
780 CmdArgs.push_back("-lm");
781
782 if (!TC.getTriple().isOSFreeBSD() &&
783 !TC.getTriple().isOSNetBSD() &&
784 !TC.getTriple().isOSOpenBSD())
785 CmdArgs.push_back("-ldl");
786 }
787
788 bool tools::areOptimizationsEnabled(const ArgList &Args) {
789 // Find the last -O arg and see if it is non-zero.
790 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
791 return !A->getOption().matches(options::OPT_O0);
792 // Defaults to -O0.
793 return false;
794 }
795
796 const char *tools::SplitDebugName(const ArgList &Args, const InputInfo &Input,
797 const InputInfo &Output) {
798 if (Arg *A = Args.getLastArg(options::OPT_gsplit_dwarf_EQ))
799 if (StringRef(A->getValue()) == "single")
800 return Args.MakeArgString(Output.getFilename());
801
802 Arg *FinalOutput = Args.getLastArg(options::OPT_o);
803 if (FinalOutput && Args.hasArg(options::OPT_c)) {
804 SmallString<128> T(FinalOutput->getValue());
805 llvm::sys::path::replace_extension(T, "dwo");
806 return Args.MakeArgString(T);
807 } else {
808 // Use the compilation dir.
809 SmallString<128> T(
810 Args.getLastArgValue(options::OPT_fdebug_compilation_dir));
811 SmallString<128> F(llvm::sys::path::stem(Input.getBaseInput()));
812 llvm::sys::path::replace_extension(F, "dwo");
813 T += F;
814 return Args.MakeArgString(F);
815 }
816 }
817
818 void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
819 const JobAction &JA, const ArgList &Args,
820 const InputInfo &Output, const char *OutFile) {
821 ArgStringList ExtractArgs;
822 ExtractArgs.push_back("--extract-dwo");
823
824 ArgStringList StripArgs;
825 StripArgs.push_back("--strip-dwo");
826
827 // Grabbing the output of the earlier compile step.
828 StripArgs.push_back(Output.getFilename());
829 ExtractArgs.push_back(Output.getFilename());
830 ExtractArgs.push_back(OutFile);
831
832 const char *Exec =
833 Args.MakeArgString(TC.GetProgramPath(CLANG_DEFAULT_OBJCOPY));
834 InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
835
836 // First extract the dwo sections.
837 C.addCommand(std::make_unique<Command>(JA, T, Exec, ExtractArgs, II));
838
839 // Then remove them from the original .o file.
840 C.addCommand(std::make_unique<Command>(JA, T, Exec, StripArgs, II));
841 }
842
843 // Claim options we don't want to warn if they are unused. We do this for
844 // options that build systems might add but are unused when assembling or only
845 // running the preprocessor for example.
846 void tools::claimNoWarnArgs(const ArgList &Args) {
847 // Don't warn about unused -f(no-)?lto. This can happen when we're
848 // preprocessing, precompiling or assembling.
849 Args.ClaimAllArgs(options::OPT_flto_EQ);
850 Args.ClaimAllArgs(options::OPT_flto);
851 Args.ClaimAllArgs(options::OPT_fno_lto);
852 }
853
854 Arg *tools::getLastProfileUseArg(const ArgList &Args) {
855 auto *ProfileUseArg = Args.getLastArg(
856 options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
857 options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
858 options::OPT_fno_profile_instr_use);
859
860 if (ProfileUseArg &&
861 ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
862 ProfileUseArg = nullptr;
863
864 return ProfileUseArg;
865 }
866
867 Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
868 auto *ProfileSampleUseArg = Args.getLastArg(
869 options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
870 options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
871 options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
872
873 if (ProfileSampleUseArg &&
874 (ProfileSampleUseArg->getOption().matches(
875 options::OPT_fno_profile_sample_use) ||
876 ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
877 return nullptr;
878
879 return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
880 options::OPT_fauto_profile_EQ);
881 }
882
883 /// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
884 /// smooshes them together with platform defaults, to decide whether
885 /// this compile should be using PIC mode or not. Returns a tuple of
886 /// (RelocationModel, PICLevel, IsPIE).
887 std::tuple<llvm::Reloc::Model, unsigned, bool>
888 tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
889 const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
890 const llvm::Triple &Triple = ToolChain.getTriple();
891
892 bool PIE = ToolChain.isPIEDefault();
893 bool PIC = PIE || ToolChain.isPICDefault();
894 // The Darwin/MachO default to use PIC does not apply when using -static.
895 if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))
896 PIE = PIC = false;
897 bool IsPICLevelTwo = PIC;
898
899 bool KernelOrKext =
900 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
901
902 // Android-specific defaults for PIC/PIE
903 if (Triple.isAndroid()) {
904 switch (Triple.getArch()) {
905 case llvm::Triple::arm:
906 case llvm::Triple::armeb:
907 case llvm::Triple::thumb:
908 case llvm::Triple::thumbeb:
909 case llvm::Triple::aarch64:
910 case llvm::Triple::mips:
911 case llvm::Triple::mipsel:
912 case llvm::Triple::mips64:
913 case llvm::Triple::mips64el:
914 PIC = true; // "-fpic"
915 break;
916
917 case llvm::Triple::x86:
918 case llvm::Triple::x86_64:
919 PIC = true; // "-fPIC"
920 IsPICLevelTwo = true;
921 break;
922
923 default:
924 break;
925 }
926 }
927
928 // OpenBSD-specific defaults for PIE
929 if (Triple.isOSOpenBSD()) {
930 switch (ToolChain.getArch()) {
931 case llvm::Triple::arm:
932 case llvm::Triple::aarch64:
933 case llvm::Triple::mips64:
934 case llvm::Triple::mips64el:
935 case llvm::Triple::x86:
936 case llvm::Triple::x86_64:
937 IsPICLevelTwo = false; // "-fpie"
938 break;
939
940 case llvm::Triple::ppc:
941 case llvm::Triple::sparc:
942 case llvm::Triple::sparcel:
943 case llvm::Triple::sparcv9:
944 IsPICLevelTwo = true; // "-fPIE"
945 break;
946
947 default:
948 break;
949 }
950 }
951
952 // AMDGPU-specific defaults for PIC.
953 if (Triple.getArch() == llvm::Triple::amdgcn)
954 PIC = true;
955
956 // The last argument relating to either PIC or PIE wins, and no
957 // other argument is used. If the last argument is any flavor of the
958 // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
959 // option implicitly enables PIC at the same level.
960 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
961 options::OPT_fpic, options::OPT_fno_pic,
962 options::OPT_fPIE, options::OPT_fno_PIE,
963 options::OPT_fpie, options::OPT_fno_pie);
964 if (Triple.isOSWindows() && LastPICArg &&
965 LastPICArg ==
966 Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
967 options::OPT_fPIE, options::OPT_fpie)) {
968 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
969 << LastPICArg->getSpelling() << Triple.str();
970 if (Triple.getArch() == llvm::Triple::x86_64)
971 return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
972 return std::make_tuple(llvm::Reloc::Static, 0U, false);
973 }
974
975 // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
976 // is forced, then neither PIC nor PIE flags will have no effect.
977 if (!ToolChain.isPICDefaultForced()) {
978 if (LastPICArg) {
979 Option O = LastPICArg->getOption();
980 if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
981 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
982 PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
983 PIC =
984 PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
985 IsPICLevelTwo =
986 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
987 } else {
988 PIE = PIC = false;
989 if (EffectiveTriple.isPS4CPU()) {
990 Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
991 StringRef Model = ModelArg ? ModelArg->getValue() : "";
992 if (Model != "kernel") {
993 PIC = true;
994 ToolChain.getDriver().Diag(diag::warn_drv_ps4_force_pic)
995 << LastPICArg->getSpelling();
996 }
997 }
998 }
999 }
1000 }
1001
1002 // Introduce a Darwin and PS4-specific hack. If the default is PIC, but the
1003 // PIC level would've been set to level 1, force it back to level 2 PIC
1004 // instead.
1005 if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS4CPU()))
1006 IsPICLevelTwo |= ToolChain.isPICDefault();
1007
1008 // This kernel flags are a trump-card: they will disable PIC/PIE
1009 // generation, independent of the argument order.
1010 if (KernelOrKext &&
1011 ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
1012 !EffectiveTriple.isWatchOS()))
1013 PIC = PIE = false;
1014
1015 if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
1016 // This is a very special mode. It trumps the other modes, almost no one
1017 // uses it, and it isn't even valid on any OS but Darwin.
1018 if (!Triple.isOSDarwin())
1019 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1020 << A->getSpelling() << Triple.str();
1021
1022 // FIXME: Warn when this flag trumps some other PIC or PIE flag.
1023
1024 // Only a forced PIC mode can cause the actual compile to have PIC defines
1025 // etc., no flags are sufficient. This behavior was selected to closely
1026 // match that of llvm-gcc and Apple GCC before that.
1027 PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();
1028
1029 return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
1030 }
1031
1032 bool EmbeddedPISupported;
1033 switch (Triple.getArch()) {
1034 case llvm::Triple::arm:
1035 case llvm::Triple::armeb:
1036 case llvm::Triple::thumb:
1037 case llvm::Triple::thumbeb:
1038 EmbeddedPISupported = true;
1039 break;
1040 default:
1041 EmbeddedPISupported = false;
1042 break;
1043 }
1044
1045 bool ROPI = false, RWPI = false;
1046 Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
1047 if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
1048 if (!EmbeddedPISupported)
1049 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1050 << LastROPIArg->getSpelling() << Triple.str();
1051 ROPI = true;
1052 }
1053 Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
1054 if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
1055 if (!EmbeddedPISupported)
1056 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1057 << LastRWPIArg->getSpelling() << Triple.str();
1058 RWPI = true;
1059 }
1060
1061 // ROPI and RWPI are not compatible with PIC or PIE.
1062 if ((ROPI || RWPI) && (PIC || PIE))
1063 ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
1064
1065 if (Triple.isMIPS()) {
1066 StringRef CPUName;
1067 StringRef ABIName;
1068 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1069 // When targeting the N64 ABI, PIC is the default, except in the case
1070 // when the -mno-abicalls option is used. In that case we exit
1071 // at next check regardless of PIC being set below.
1072 if (ABIName == "n64")
1073 PIC = true;
1074 // When targettng MIPS with -mno-abicalls, it's always static.
1075 if(Args.hasArg(options::OPT_mno_abicalls))
1076 return std::make_tuple(llvm::Reloc::Static, 0U, false);
1077 // Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,
1078 // does not use PIC level 2 for historical reasons.
1079 IsPICLevelTwo = false;
1080 }
1081
1082 if (PIC)
1083 return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
1084
1085 llvm::Reloc::Model RelocM = llvm::Reloc::Static;
1086 if (ROPI && RWPI)
1087 RelocM = llvm::Reloc::ROPI_RWPI;
1088 else if (ROPI)
1089 RelocM = llvm::Reloc::ROPI;
1090 else if (RWPI)
1091 RelocM = llvm::Reloc::RWPI;
1092
1093 return std::make_tuple(RelocM, 0U, false);
1094 }
1095
1096 // `-falign-functions` indicates that the functions should be aligned to a
1097 // 16-byte boundary.
1098 //
1099 // `-falign-functions=1` is the same as `-fno-align-functions`.
1100 //
1101 // The scalar `n` in `-falign-functions=n` must be an integral value between
1102 // [0, 65536]. If the value is not a power-of-two, it will be rounded up to
1103 // the nearest power-of-two.
1104 //
1105 // If we return `0`, the frontend will default to the backend's preferred
1106 // alignment.
1107 //
1108 // NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`
1109 // to mean `-falign-functions=16`. GCC defaults to the backend's preferred
1110 // alignment. For unaligned functions, we default to the backend's preferred
1111 // alignment.
1112 unsigned tools::ParseFunctionAlignment(const ToolChain &TC,
1113 const ArgList &Args) {
1114 const Arg *A = Args.getLastArg(options::OPT_falign_functions,
1115 options::OPT_falign_functions_EQ,
1116 options::OPT_fno_align_functions);
1117 if (!A || A->getOption().matches(options::OPT_fno_align_functions))
1118 return 0;
1119
1120 if (A->getOption().matches(options::OPT_falign_functions))
1121 return 0;
1122
1123 unsigned Value = 0;
1124 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
1125 TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1126 << A->getAsString(Args) << A->getValue();
1127 return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;
1128 }
1129
1130 unsigned tools::ParseDebugDefaultVersion(const ToolChain &TC,
1131 const ArgList &Args) {
1132 const Arg *A = Args.getLastArg(options::OPT_fdebug_default_version);
1133
1134 if (!A)
1135 return 0;
1136
1137 unsigned Value = 0;
1138 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 5 ||
1139 Value < 2)
1140 TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1141 << A->getAsString(Args) << A->getValue();
1142 return Value;
1143 }
1144
1145 void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
1146 ArgStringList &CmdArgs) {
1147 llvm::Reloc::Model RelocationModel;
1148 unsigned PICLevel;
1149 bool IsPIE;
1150 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
1151
1152 if (RelocationModel != llvm::Reloc::Static)
1153 CmdArgs.push_back("-KPIC");
1154 }
1155
1156 /// Determine whether Objective-C automated reference counting is
1157 /// enabled.
1158 bool tools::isObjCAutoRefCount(const ArgList &Args) {
1159 return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
1160 }
1161
1162 enum class LibGccType { UnspecifiedLibGcc, StaticLibGcc, SharedLibGcc };
1163
1164 static LibGccType getLibGccType(const Driver &D, const ArgList &Args) {
1165 if (Args.hasArg(options::OPT_static_libgcc) ||
1166 Args.hasArg(options::OPT_static) || Args.hasArg(options::OPT_static_pie))
1167 return LibGccType::StaticLibGcc;
1168 if (Args.hasArg(options::OPT_shared_libgcc) || D.CCCIsCXX())
1169 return LibGccType::SharedLibGcc;
1170 return LibGccType::UnspecifiedLibGcc;
1171 }
1172
1173 // Gcc adds libgcc arguments in various ways:
1174 //
1175 // gcc <none>: -lgcc --as-needed -lgcc_s --no-as-needed
1176 // g++ <none>: -lgcc_s -lgcc
1177 // gcc shared: -lgcc_s -lgcc
1178 // g++ shared: -lgcc_s -lgcc
1179 // gcc static: -lgcc -lgcc_eh
1180 // g++ static: -lgcc -lgcc_eh
1181 // gcc static-pie: -lgcc -lgcc_eh
1182 // g++ static-pie: -lgcc -lgcc_eh
1183 //
1184 // Also, certain targets need additional adjustments.
1185
1186 static void AddUnwindLibrary(const ToolChain &TC, const Driver &D,
1187 ArgStringList &CmdArgs, const ArgList &Args) {
1188 ToolChain::UnwindLibType UNW = TC.GetUnwindLibType(Args);
1189 // Targets that don't use unwind libraries.
1190 if (TC.getTriple().isAndroid() || TC.getTriple().isOSIAMCU() ||
1191 TC.getTriple().isOSBinFormatWasm() ||
1192 UNW == ToolChain::UNW_None)
1193 return;
1194
1195 LibGccType LGT = getLibGccType(D, Args);
1196 bool AsNeeded = LGT == LibGccType::UnspecifiedLibGcc &&
1197 !TC.getTriple().isAndroid() && !TC.getTriple().isOSCygMing();
1198 if (AsNeeded)
1199 CmdArgs.push_back("--as-needed");
1200
1201 switch (UNW) {
1202 case ToolChain::UNW_None:
1203 return;
1204 case ToolChain::UNW_Libgcc: {
1205 if (LGT == LibGccType::StaticLibGcc)
1206 CmdArgs.push_back("-lgcc_eh");
1207 else
1208 CmdArgs.push_back("-lgcc_s");
1209 break;
1210 }
1211 case ToolChain::UNW_CompilerRT:
1212 if (LGT == LibGccType::StaticLibGcc)
1213 CmdArgs.push_back("-l:libunwind.a");
1214 else
1215 CmdArgs.push_back("-l:libunwind.so");
1216 break;
1217 }
1218
1219 if (AsNeeded)
1220 CmdArgs.push_back("--no-as-needed");
1221 }
1222
1223 static void AddLibgcc(const ToolChain &TC, const Driver &D,
1224 ArgStringList &CmdArgs, const ArgList &Args) {
1225 LibGccType LGT = getLibGccType(D, Args);
1226 if (LGT != LibGccType::SharedLibGcc)
1227 CmdArgs.push_back("-lgcc");
1228 AddUnwindLibrary(TC, D, CmdArgs, Args);
1229 if (LGT == LibGccType::SharedLibGcc)
1230 CmdArgs.push_back("-lgcc");
1231
1232 // According to Android ABI, we have to link with libdl if we are
1233 // linking with non-static libgcc.
1234 //
1235 // NOTE: This fixes a link error on Android MIPS as well. The non-static
1236 // libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl.
1237 if (TC.getTriple().isAndroid() && LGT != LibGccType::StaticLibGcc)
1238 CmdArgs.push_back("-ldl");
1239 }
1240
1241 void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
1242 ArgStringList &CmdArgs, const ArgList &Args) {
1243 // Make use of compiler-rt if --rtlib option is used
1244 ToolChain::RuntimeLibType RLT = TC.GetRuntimeLibType(Args);
1245
1246 switch (RLT) {
1247 case ToolChain::RLT_CompilerRT:
1248 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
1249 AddUnwindLibrary(TC, D, CmdArgs, Args);
1250 break;
1251 case ToolChain::RLT_Libgcc:
1252 // Make sure libgcc is not used under MSVC environment by default
1253 if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1254 // Issue error diagnostic if libgcc is explicitly specified
1255 // through command line as --rtlib option argument.
1256 if (Args.hasArg(options::OPT_rtlib_EQ)) {
1257 TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
1258 << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC";
1259 }
1260 } else
1261 AddLibgcc(TC, D, CmdArgs, Args);
1262 break;
1263 }
1264 }
1265
1266 /// Add HIP linker script arguments at the end of the argument list so that
1267 /// the fat binary is built by embedding the device images into the host. The
1268 /// linker script also defines a symbol required by the code generation so that
1269 /// the image can be retrieved at runtime. This should be used only in tool
1270 /// chains that support linker scripts.
1271 void tools::AddHIPLinkerScript(const ToolChain &TC, Compilation &C,
1272 const InputInfo &Output,
1273 const InputInfoList &Inputs, const ArgList &Args,
1274 ArgStringList &CmdArgs, const JobAction &JA,
1275 const Tool &T) {
1276
1277 // If this is not a HIP host toolchain, we don't need to do anything.
1278 if (!JA.isHostOffloading(Action::OFK_HIP))
1279 return;
1280
1281 InputInfoList DeviceInputs;
1282 for (const auto &II : Inputs) {
1283 const Action *A = II.getAction();
1284 // Is this a device linking action?
1285 if (A && isa<LinkJobAction>(A) && A->isDeviceOffloading(Action::OFK_HIP)) {
1286 DeviceInputs.push_back(II);
1287 }
1288 }
1289
1290 if (DeviceInputs.empty())
1291 return;
1292
1293 // Create temporary linker script. Keep it if save-temps is enabled.
1294 const char *LKS;
1295 std::string Name = llvm::sys::path::filename(Output.getFilename());
1296 if (C.getDriver().isSaveTempsEnabled()) {
1297 LKS = C.getArgs().MakeArgString(Name + ".lk");
1298 } else {
1299 auto TmpName = C.getDriver().GetTemporaryPath(Name, "lk");
1300 LKS = C.addTempFile(C.getArgs().MakeArgString(TmpName));
1301 }
1302
1303 // Add linker script option to the command.
1304 CmdArgs.push_back("-T");
1305 CmdArgs.push_back(LKS);
1306
1307 // Create a buffer to write the contents of the linker script.
1308 std::string LksBuffer;
1309 llvm::raw_string_ostream LksStream(LksBuffer);
1310
1311 // Get the HIP offload tool chain.
1312 auto *HIPTC = static_cast<const toolchains::CudaToolChain *>(
1313 C.getSingleOffloadToolChain<Action::OFK_HIP>());
1314 assert(HIPTC->getTriple().getArch() == llvm::Triple::amdgcn &&
1315 "Wrong platform");
1316 (void)HIPTC;
1317
1318 const char *BundleFile;
1319 if (C.getDriver().isSaveTempsEnabled()) {
1320 BundleFile = C.getArgs().MakeArgString(Name + ".hipfb");
1321 } else {
1322 auto TmpName = C.getDriver().GetTemporaryPath(Name, "hipfb");
1323 BundleFile = C.addTempFile(C.getArgs().MakeArgString(TmpName));
1324 }
1325 AMDGCN::constructHIPFatbinCommand(C, JA, BundleFile, DeviceInputs, Args, T);
1326
1327 // Add commands to embed target binaries. We ensure that each section and
1328 // image is 16-byte aligned. This is not mandatory, but increases the
1329 // likelihood of data to be aligned with a cache block in several main host
1330 // machines.
1331 LksStream << "/*\n";
1332 LksStream << " HIP Offload Linker Script\n";
1333 LksStream << " *** Automatically generated by Clang ***\n";
1334 LksStream << "*/\n";
1335 LksStream << "TARGET(binary)\n";
1336 LksStream << "INPUT(" << BundleFile << ")\n";
1337 LksStream << "SECTIONS\n";
1338 LksStream << "{\n";
1339 LksStream << " .hip_fatbin :\n";
1340 LksStream << " ALIGN(0x10)\n";
1341 LksStream << " {\n";
1342 LksStream << " PROVIDE_HIDDEN(__hip_fatbin = .);\n";
1343 LksStream << " " << BundleFile << "\n";
1344 LksStream << " }\n";
1345 LksStream << " /DISCARD/ :\n";
1346 LksStream << " {\n";
1347 LksStream << " * ( __CLANG_OFFLOAD_BUNDLE__* )\n";
1348 LksStream << " }\n";
1349 LksStream << "}\n";
1350 LksStream << "INSERT BEFORE .data\n";
1351 LksStream.flush();
1352
1353 // Dump the contents of the linker script if the user requested that. We
1354 // support this option to enable testing of behavior with -###.
1355 if (C.getArgs().hasArg(options::OPT_fhip_dump_offload_linker_script))
1356 llvm::errs() << LksBuffer;
1357
1358 // If this is a dry run, do not create the linker script file.
1359 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
1360 return;
1361
1362 // Open script file and write the contents.
1363 std::error_code EC;
1364 llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::OF_None);
1365
1366 if (EC) {
1367 C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
1368 return;
1369 }
1370
1371 Lksf << LksBuffer;
1372 }
1373
1374 SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,
1375 const InputInfo &Output,
1376 const InputInfo &Input,
1377 const Driver &D) {
1378 const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);
1379 if (!A)
1380 return {};
1381
1382 StringRef SaveStats = A->getValue();
1383 SmallString<128> StatsFile;
1384 if (SaveStats == "obj" && Output.isFilename()) {
1385 StatsFile.assign(Output.getFilename());
1386 llvm::sys::path::remove_filename(StatsFile);
1387 } else if (SaveStats != "cwd") {
1388 D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
1389 return {};
1390 }
1391
1392 StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
1393 llvm::sys::path::append(StatsFile, BaseName);
1394 llvm::sys::path::replace_extension(StatsFile, "stats");
1395 return StatsFile;
1396 }
1397
1398 void tools::addMultilibFlag(bool Enabled, const char *const Flag,
1399 Multilib::flags_list &Flags) {
1400 Flags.push_back(std::string(Enabled ? "+" : "-") + Flag);
1401 }
clang::driver::tools::handleTargetFeaturesGroup
void handleTargetFeaturesGroup(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier Group)
clang::driver::SanitizerArgs::needsStatsRt
bool needsStatsRt() const
Definition: SanitizerArgs.h:81
clang::driver::tools::addXRayRuntime
bool addXRayRuntime(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
clang::driver::Driver::getOpenMPRuntime
OpenMPRuntimeKind getOpenMPRuntime(const llvm::opt::ArgList &Args) const
Compute the desired OpenMP runtime from the flags provided.
Definition: Driver.cpp:581
clang::driver::ToolChain::AddCCKextLibArgs
virtual void AddCCKextLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCCKextLibArgs - Add the system specific linker arguments to use for kernel extensions (Darwin-spec...
Definition: ToolChain.cpp:913
clang::driver::tools::aarch64::getAArch64TargetCPU
std::string getAArch64TargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, llvm::opt::Arg *&A)
clang::driver::Driver::GetTemporaryPath
std::string GetTemporaryPath(StringRef Prefix, StringRef Suffix) const
GetTemporaryPath - Return the pathname of a temporary file to use as part of compilation; the file wi...
Definition: Driver.cpp:4744
clang::driver::Action::OFK_OpenMP
Definition: Action.h:92
clang::driver::SanitizerArgs::needsHwasanRt
bool needsHwasanRt() const
Definition: SanitizerArgs.h:64
clang::driver::tools::isUseSeparateSections
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:352
Job.h
ObjCRuntime.h
Defines types useful for describing an Objective-C runtime.
clang::driver::ToolChain::getXRayArgs
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:123
clang::driver::ToolChain::RLT_Libgcc
Definition: ToolChain.h:99
clang::driver::tools::AddRunTimeLibs
void AddRunTimeLibs(const ToolChain &TC, const Driver &D, llvm::opt::ArgStringList &CmdArgs, const llvm::opt::ArgList &Args)
clang::driver::tools::AddHIPLinkerScript
void AddHIPLinkerScript(const ToolChain &TC, Compilation &C, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA, const Tool &T)
clang::driver::Action::isHostOffloading
bool isHostOffloading(OffloadKind OKind) const
Check if this action have any offload kinds.
Definition: Action.h:203
clang::driver::Driver::Diag
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:109
clang::driver::SanitizerArgs::needsFuzzer
bool needsFuzzer() const
Definition: SanitizerArgs.h:69
Value
Value
Definition: UninitializedValues.cpp:101
clang::driver::tools::AddTargetFeature
void AddTargetFeature(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier OnOpt, llvm::opt::OptSpecifier OffOpt, StringRef FeatureName)
clang::driver::ToolChain::UNW_CompilerRT
Definition: ToolChain.h:104
clang::driver::ToolChain::isPICDefaultForced
virtual bool isPICDefaultForced() const =0
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
addSanitizerRuntime
static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Sanitizer, bool IsShared, bool IsWhole)
Definition: CommonArgs.cpp:547
Action.h
HIP.h
Hexagon.h
clang::driver::tools::addOpenMPRuntime
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool ForceStaticHostRuntime=false, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
clang::driver::tools::getCPUName
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
clang::driver::InputInfo::getFilename
const char * getFilename() const
Definition: InputInfo.h:83
SanitizerArgs.h
CommonArgs.h
clang::driver::SanitizerArgs::needsUbsanRt
bool needsUbsanRt() const
Definition: SanitizerArgs.cpp:208
clang::driver::SanitizerArgs::linkRuntimes
bool linkRuntimes() const
Definition: SanitizerArgs.h:87
clang::driver::tools::linkSanitizerRuntimeDeps
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
clang::driver::JobAction
Definition: Action.h:375
clang::driver::Driver::Dir
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:120
clang::driver::tools::AddGoldPlugin
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfo &Input, bool IsThinLTO)
clang::driver::SanitizerArgs::needsLsanRt
bool needsLsanRt() const
Definition: SanitizerArgs.h:70
PPC.h
llvm::SmallVectorImpl
Definition: LLVM.h:36
clang::driver::tools::addSanitizerRuntimes
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
addSanitizerDynamicList
static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Sanitizer)
Definition: CommonArgs.cpp:564
clang::driver::tools::addMultilibFlag
void addMultilibFlag(bool Enabled, const char *const Flag, Multilib::flags_list &Flags)
Flag must be a flag accepted by the driver with its leading &#39;-&#39; removed,
Definition: CommonArgs.cpp:1398
clang::driver::tools::systemz::getSystemZTargetCPU
std::string getSystemZTargetCPU(const llvm::opt::ArgList &Args)
clang::driver::Action
Action - Represent an abstract compilation step to perform.
Definition: Action.h:47
clang::driver::SanitizerArgs
Definition: SanitizerArgs.h:23
clang::driver::tools
Definition: AIX.h:17
clang::driver::ToolChain::getTripleString
std::string getTripleString() const
Definition: ToolChain.h:224
clang::driver::InputInfo
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
clang::driver::tools::addArchSpecificRPath
void addArchSpecificRPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
clang::driver::ToolChain::RuntimeLibType
RuntimeLibType
Definition: ToolChain.h:97
clang::driver::Action::isDeviceOffloading
bool isDeviceOffloading(OffloadKind OKind) const
Definition: Action.h:206
clang::driver::Driver::OMPRT_OMP
The LLVM OpenMP runtime.
Definition: Driver.h:95
clang::driver::Driver
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:59
clang::driver::Driver::OMPRT_Unknown
An unknown OpenMP runtime.
Definition: Driver.h:91
clang::driver::XRayArgs::needsXRayRt
bool needsXRayRt() const
Definition: XRayArgs.h:40
ARM.h
getLibGccType
static LibGccType getLibGccType(const Driver &D, const ArgList &Args)
Definition: CommonArgs.cpp:1164
clang::driver::tools::SplitDebugName
const char * SplitDebugName(const llvm::opt::ArgList &Args, const InputInfo &Input, const InputInfo &Output)
llvm::SmallString
Definition: LLVM.h:34
Driver.h
AddLibgcc
static void AddLibgcc(const ToolChain &TC, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
Definition: CommonArgs.cpp:1223
Compilation.h
clang::driver::Driver::getVFS
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:319
clang::driver::tools::addDirectoryList
void addDirectoryList(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const char *ArgName, const char *EnvVar)
clang::driver::tools::linkXRayRuntimeDeps
void linkXRayRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
clang::driver::SanitizerArgs::hasCrossDsoCfi
bool hasCrossDsoCfi() const
Definition: SanitizerArgs.h:89
CharInfo.h
clang::driver::SanitizerArgs::needsCfiDiagRt
bool needsCfiDiagRt() const
Definition: SanitizerArgs.cpp:224
clang::driver::Action::OFK_HIP
Definition: Action.h:93
clang::driver::XRayArgs::modeList
llvm::ArrayRef< std::string > modeList() const
Definition: XRayArgs.h:41
clang::driver::tools::AMDGCN::constructHIPFatbinCommand
void constructHIPFatbinCommand(Compilation &C, const JobAction &JA, StringRef OutputFileName, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const Tool &T)
Definition: HIP.cpp:201
clang::driver::toolchains::CudaToolChain
Definition: Cuda.h:133
clang::driver::SanitizerArgs::requiresMinimalRuntime
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:76
LangOptions.h
Defines the clang::LangOptions interface.
llvm::opt
Definition: Action.h:23
getWebAssemblyTargetCPU
static StringRef getWebAssemblyTargetCPU(const ArgList &Args)
Get the (LLVM) name of the WebAssembly cpu we are targeting.
Definition: CommonArgs.cpp:229
clang::driver::ToolChain::isPICDefault
virtual bool isPICDefault() const =0
Test whether this toolchain defaults to PIC.
AddUnwindLibrary
static void AddUnwindLibrary(const ToolChain &TC, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
Definition: CommonArgs.cpp:1186
clang::driver::ToolChain::getEffectiveTriple
const llvm::Triple & getEffectiveTriple() const
Get the toolchain&#39;s effective clang triple.
Definition: ToolChain.h:229
Version.h
Defines version macros and version-related utility functions for Clang.
clang::driver::toolchains::HexagonToolChain::GetTargetCPUVersion
static const StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:580
clang::driver::tools::getStatsFileName
SmallString< 128 > getStatsFileName(const llvm::opt::ArgList &Args, const InputInfo &Output, const InputInfo &Input, const Driver &D)
Handles the -save-stats option and returns the filename to save statistics to.
Definition: CommonArgs.cpp:1374
clang::driver::Multilib::flags_list
std::vector< std::string > flags_list
Definition: Multilib.h:30
clang::driver::SanitizerArgs::needsTsanRt
bool needsTsanRt() const
Definition: SanitizerArgs.h:67
clang::driver::Compilation::addCommand
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
clang::driver::ToolChain::GetUnwindLibType
virtual UnwindLibType GetUnwindLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:774
clang::driver::tools::ParsePICArgs
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
clang::driver::SanitizerArgs::needsSafeStackRt
bool needsSafeStackRt() const
Definition: SanitizerArgs.h:78
clang::driver::tools::isObjCAutoRefCount
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
clang::driver::tools::x86::getX86TargetCPU
const char * getX86TargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
clang::driver::tools::ParseFunctionAlignment
unsigned ParseFunctionAlignment(const ToolChain &TC, const llvm::opt::ArgList &Args)
LibGccType::UnspecifiedLibGcc
clang::driver::SanitizerArgs::needsDfsanRt
bool needsDfsanRt() const
Definition: SanitizerArgs.h:77
clang::driver::tools::AddAssemblerKPIC
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
clang::driver::ToolChain::getArch
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:215
LibGccType
LibGccType
Definition: CommonArgs.cpp:1162
X86.h
clang::driver::ToolChain::FT_Shared
Definition: ToolChain.h:113
clang::driver::ToolChain::getCompilerRT
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:391
clang::driver::SanitizerArgs::needsScudoRt
bool needsScudoRt() const
Definition: SanitizerArgs.h:82
clang::driver::Compilation::getArgs
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:186
clang::driver::ToolChain::getDriver
const Driver & getDriver() const
Definition: ToolChain.h:199
clang::driver::tools::ppc::getPPCTargetCPU
std::string getPPCTargetCPU(const llvm::opt::ArgList &Args)
clang::driver::Driver::OMPRT_IOMP5
The legacy name for the LLVM OpenMP runtime from when it was the Intel OpenMP runtime.
Definition: Driver.h:105
clang::driver::ToolChain::FT_Static
Definition: ToolChain.h:113
clang::driver::Driver::CCCIsCXX
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:173
ToolChain.h
clang::driver::Driver::isSaveTempsEnabled
bool isSaveTempsEnabled() const
Definition: Driver.h:347
clang::driver::tools::getLastProfileSampleUseArg
llvm::opt::Arg * getLastProfileSampleUseArg(const llvm::opt::ArgList &Args)
Util.h
clang::driver::SanitizerArgs::needsMsanRt
bool needsMsanRt() const
Definition: SanitizerArgs.h:68
llvm::SmallVector< std::string, 16 >
Options.h
clang::driver::ToolChain::HasNativeLLVMSupport
virtual bool HasNativeLLVMSupport() const
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: ToolChain.cpp:564
clang::driver::tools::getLastProfileUseArg
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
clang::driver::tools::SplitDebugInfo
void SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T, const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Output, const char *OutFile)
clang::driver::ToolChain::GetRuntimeLibType
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:755
clang::driver::ToolChain::getVFS
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:99
clang::driver::ToolChain::RLT_CompilerRT
Definition: ToolChain.h:98
clang::driver::tools::arm::getARMTargetCPU
std::string getARMTargetCPU(StringRef CPU, llvm::StringRef Arch, const llvm::Triple &Triple)
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
Mips.h
clang::driver::Driver::OpenMPRuntimeKind
OpenMPRuntimeKind
Definition: Driver.h:88
clang::driver::tools::AddLinkerInputs
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
clang::driver::SanitizerArgs::needsCfiRt
bool needsCfiRt() const
Definition: SanitizerArgs.cpp:219
clang::driver::tools::getLTOParallelism
unsigned getLTOParallelism(const llvm::opt::ArgList &Args, const Driver &D)
clang::driver::Tool
Tool - Information on a specific compilation tool.
Definition: Tool.h:33
clang::driver::Driver::OMPRT_GOMP
The GNU OpenMP runtime.
Definition: Driver.h:100
clang::driver::ToolChain::getSanitizerArgs
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:117
clang::driver::tools::arm::getARMArchCPUFromArgs
void getARMArchCPUFromArgs(const llvm::opt::ArgList &Args, llvm::StringRef &Arch, llvm::StringRef &CPU, bool FromAs=false)
SystemZ.h
clang::driver::tools::areOptimizationsEnabled
bool areOptimizationsEnabled(const llvm::opt::ArgList &Args)
getLanaiTargetCPU
static std::string getLanaiTargetCPU(const ArgList &Args)
Definition: CommonArgs.cpp:221
InputInfo.h
clang::driver::tools::claimNoWarnArgs
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
LibGccType::SharedLibGcc
clang::driver::ToolChain::UNW_None
Definition: ToolChain.h:103
clang::driver::SanitizerArgs::needsAsanRt
bool needsAsanRt() const
Definition: SanitizerArgs.h:63
clang::driver::ToolChain::isPIEDefault
virtual bool isPIEDefault() const =0
Test whether this toolchain defaults to PIE.
clang::driver::Compilation
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
clang::driver::Compilation::getDriver
const Driver & getDriver() const
Definition: Compilation.h:133
clang::driver::ToolChain::getTriple
const llvm::Triple & getTriple() const
Definition: ToolChain.h:201
clang::driver
Definition: Action.h:31
clang::driver::ToolChain::getArchSpecificLibPath
std::string getArchSpecificLibPath() const
Definition: ToolChain.cpp:472
DriverDiagnostic.h
clang::driver::ToolChain::getCompilerRTArgString
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:429
clang::driver::ToolChain::UNW_Libgcc
Definition: ToolChain.h:105
clang::driver::ToolChain::GetProgramPath
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:516
clang::driver::InputInfo::getBaseInput
const char * getBaseInput() const
Definition: InputInfo.h:78
getR600TargetGPU
static std::string getR600TargetGPU(const ArgList &Args)
Get the (LLVM) name of the R600 gpu we are targeting.
Definition: CommonArgs.cpp:205
clang::driver::tools::ParseDebugDefaultVersion
unsigned ParseDebugDefaultVersion(const ToolChain &TC, const llvm::opt::ArgList &Args)
clang::driver::tools::addPathIfExists
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:61
clang::driver::InputInfo::isFilename
bool isFilename() const
Definition: InputInfo.h:75
clang::driver::ToolChain::isCrossCompiling
virtual bool isCrossCompiling() const
Returns true if the toolchain is targeting a non-native architecture.
Definition: ToolChain.cpp:568
min
__DEVICE__ int min(int __a, int __b)
Definition: __clang_cuda_device_functions.h:1639
clang::driver::Compilation::addTempFile
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:232
clang::driver::SanitizerArgs::needsSharedRt
bool needsSharedRt() const
Definition: SanitizerArgs.h:61
clang::driver::Compilation::getSingleOffloadToolChain
const ToolChain * getSingleOffloadToolChain() const
Return an offload toolchain of the provided kind.
Definition: Compilation.h:163
clang::driver::tools::mips::getMipsCPUAndABI
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
clang::driver::types::isLLVMIR
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:178
collectSanitizerRuntimes
static void collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args, SmallVectorImpl< StringRef > &SharedRuntimes, SmallVectorImpl< StringRef > &StaticRuntimes, SmallVectorImpl< StringRef > &NonWholeStaticRuntimes, SmallVectorImpl< StringRef > &HelperStaticRuntimes, SmallVectorImpl< StringRef > &RequiredSymbols)
Definition: CommonArgs.cpp:610
AArch64.h
clang::driver::ToolChain::UnwindLibType
UnwindLibType
Definition: ToolChain.h:102
XRayArgs.h
clang::driver::ToolChain::AddCXXStdlibLibArgs
virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: ToolChain.cpp:889
LibGccType::StaticLibGcc
clang::driver::SanitizerArgs::linkCXXRuntimes
bool linkCXXRuntimes() const
Definition: SanitizerArgs.h:88
clang::driver::ToolChain
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88