clang 17.0.0git
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/CSKY.h"
13#include "Arch/LoongArch.h"
14#include "Arch/M68k.h"
15#include "Arch/Mips.h"
16#include "Arch/PPC.h"
17#include "Arch/RISCV.h"
18#include "Arch/Sparc.h"
19#include "Arch/SystemZ.h"
20#include "Arch/VE.h"
21#include "Arch/X86.h"
22#include "HIPAMD.h"
23#include "Hexagon.h"
24#include "MSP430.h"
28#include "clang/Basic/Version.h"
29#include "clang/Config/config.h"
30#include "clang/Driver/Action.h"
32#include "clang/Driver/Driver.h"
35#include "clang/Driver/Job.h"
39#include "clang/Driver/Util.h"
41#include "llvm/ADT/STLExtras.h"
42#include "llvm/ADT/SmallSet.h"
43#include "llvm/ADT/SmallString.h"
44#include "llvm/ADT/StringExtras.h"
45#include "llvm/ADT/StringSwitch.h"
46#include "llvm/ADT/Twine.h"
47#include "llvm/BinaryFormat/Magic.h"
48#include "llvm/Config/llvm-config.h"
49#include "llvm/Option/Arg.h"
50#include "llvm/Option/ArgList.h"
51#include "llvm/Option/Option.h"
52#include "llvm/Support/CodeGen.h"
53#include "llvm/Support/Compression.h"
54#include "llvm/Support/Debug.h"
55#include "llvm/Support/ErrorHandling.h"
56#include "llvm/Support/FileSystem.h"
57#include "llvm/Support/Path.h"
58#include "llvm/Support/Process.h"
59#include "llvm/Support/Program.h"
60#include "llvm/Support/ScopedPrinter.h"
61#include "llvm/Support/Threading.h"
62#include "llvm/Support/VirtualFileSystem.h"
63#include "llvm/Support/YAMLParser.h"
64#include "llvm/TargetParser/Host.h"
65#include "llvm/TargetParser/TargetParser.h"
66#include <optional>
67
68using namespace clang::driver;
69using namespace clang::driver::tools;
70using namespace clang;
71using namespace llvm::opt;
72
73static void renderRpassOptions(const ArgList &Args, ArgStringList &CmdArgs,
74 const StringRef PluginOptPrefix) {
75 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_EQ))
76 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +
77 "-pass-remarks=" + A->getValue()));
78
79 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_missed_EQ))
80 CmdArgs.push_back(Args.MakeArgString(
81 Twine(PluginOptPrefix) + "-pass-remarks-missed=" + A->getValue()));
82
83 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_analysis_EQ))
84 CmdArgs.push_back(Args.MakeArgString(
85 Twine(PluginOptPrefix) + "-pass-remarks-analysis=" + A->getValue()));
86}
87
88static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,
89 const llvm::Triple &Triple,
90 const InputInfo &Input,
91 const InputInfo &Output,
92 const StringRef PluginOptPrefix) {
93 StringRef Format = "yaml";
94 if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
95 Format = A->getValue();
96
98 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
99 if (A)
100 F = A->getValue();
101 else if (Output.isFilename())
102 F = Output.getFilename();
103
104 assert(!F.empty() && "Cannot determine remarks output name.");
105 // Append "opt.ld.<format>" to the end of the file name.
106 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +
107 "opt-remarks-filename=" + F +
108 ".opt.ld." + Format));
109
110 if (const Arg *A =
111 Args.getLastArg(options::OPT_foptimization_record_passes_EQ))
112 CmdArgs.push_back(Args.MakeArgString(
113 Twine(PluginOptPrefix) + "opt-remarks-passes=" + A->getValue()));
114
115 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +
116 "opt-remarks-format=" + Format.data()));
117}
118
119static void renderRemarksHotnessOptions(const ArgList &Args,
120 ArgStringList &CmdArgs,
121 const StringRef PluginOptPrefix) {
122 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
123 options::OPT_fno_diagnostics_show_hotness, false))
124 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +
125 "opt-remarks-with-hotness"));
126
127 if (const Arg *A =
128 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ))
129 CmdArgs.push_back(
130 Args.MakeArgString(Twine(PluginOptPrefix) +
131 "opt-remarks-hotness-threshold=" + A->getValue()));
132}
133
134static bool shouldIgnoreUnsupportedTargetFeature(const Arg &TargetFeatureArg,
135 llvm::Triple T,
136 StringRef Processor) {
137 // Warn no-cumode for AMDGCN processors not supporing WGP mode.
138 if (!T.isAMDGPU())
139 return false;
140 auto GPUKind = T.isAMDGCN() ? llvm::AMDGPU::parseArchAMDGCN(Processor)
141 : llvm::AMDGPU::parseArchR600(Processor);
142 auto GPUFeatures = T.isAMDGCN() ? llvm::AMDGPU::getArchAttrAMDGCN(GPUKind)
143 : llvm::AMDGPU::getArchAttrR600(GPUKind);
144 if (GPUFeatures & llvm::AMDGPU::FEATURE_WGP)
145 return false;
146 return TargetFeatureArg.getOption().matches(options::OPT_mno_cumode);
147}
148
149void tools::addPathIfExists(const Driver &D, const Twine &Path,
150 ToolChain::path_list &Paths) {
151 if (D.getVFS().exists(Path))
152 Paths.push_back(Path.str());
153}
154
156 const llvm::Triple &Triple,
157 const ArgList &Args,
158 std::vector<StringRef> &Features,
159 OptSpecifier Group) {
160 std::set<StringRef> Warned;
161 for (const Arg *A : Args.filtered(Group)) {
162 StringRef Name = A->getOption().getName();
163 A->claim();
164
165 // Skip over "-m".
166 assert(Name.startswith("m") && "Invalid feature name.");
167 Name = Name.substr(1);
168
169 auto Proc = getCPUName(D, Args, Triple);
170 if (shouldIgnoreUnsupportedTargetFeature(*A, Triple, Proc)) {
171 if (Warned.count(Name) == 0) {
172 D.getDiags().Report(
173 clang::diag::warn_drv_unsupported_option_for_processor)
174 << A->getAsString(Args) << Proc;
175 Warned.insert(Name);
176 }
177 continue;
178 }
179
180 bool IsNegative = Name.startswith("no-");
181 if (IsNegative)
182 Name = Name.substr(3);
183
184 Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
185 }
186}
187
190 // Only add a feature if it hasn't been seen before starting from the end.
191 SmallVector<StringRef> UnifiedFeatures;
192 llvm::DenseSet<StringRef> UsedFeatures;
193 for (StringRef Feature : llvm::reverse(Features)) {
194 if (UsedFeatures.insert(Feature.drop_front()).second)
195 UnifiedFeatures.insert(UnifiedFeatures.begin(), Feature);
196 }
197
198 return UnifiedFeatures;
199}
200
201void tools::addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,
202 const char *ArgName, const char *EnvVar) {
203 const char *DirList = ::getenv(EnvVar);
204 bool CombinedArg = false;
205
206 if (!DirList)
207 return; // Nothing to do.
208
209 StringRef Name(ArgName);
210 if (Name.equals("-I") || Name.equals("-L") || Name.empty())
211 CombinedArg = true;
212
213 StringRef Dirs(DirList);
214 if (Dirs.empty()) // Empty string should not add '.'.
215 return;
216
217 StringRef::size_type Delim;
218 while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {
219 if (Delim == 0) { // Leading colon.
220 if (CombinedArg) {
221 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
222 } else {
223 CmdArgs.push_back(ArgName);
224 CmdArgs.push_back(".");
225 }
226 } else {
227 if (CombinedArg) {
228 CmdArgs.push_back(
229 Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
230 } else {
231 CmdArgs.push_back(ArgName);
232 CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
233 }
234 }
235 Dirs = Dirs.substr(Delim + 1);
236 }
237
238 if (Dirs.empty()) { // Trailing colon.
239 if (CombinedArg) {
240 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
241 } else {
242 CmdArgs.push_back(ArgName);
243 CmdArgs.push_back(".");
244 }
245 } else { // Add the last path.
246 if (CombinedArg) {
247 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
248 } else {
249 CmdArgs.push_back(ArgName);
250 CmdArgs.push_back(Args.MakeArgString(Dirs));
251 }
252 }
253}
254
255void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
256 const ArgList &Args, ArgStringList &CmdArgs,
257 const JobAction &JA) {
258 const Driver &D = TC.getDriver();
259
260 // Add extra linker input arguments which are not treated as inputs
261 // (constructed via -Xarch_).
262 Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
263
264 // LIBRARY_PATH are included before user inputs and only supported on native
265 // toolchains. Otherwise only add the '-L' arguments requested by the user.
266 if (!TC.isCrossCompiling())
267 addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
268 else
269 Args.AddAllArgs(CmdArgs, options::OPT_L);
270
271 for (const auto &II : Inputs) {
272 // If the current tool chain refers to an OpenMP offloading host, we
273 // should ignore inputs that refer to OpenMP offloading devices -
274 // they will be embedded according to a proper linker script.
275 if (auto *IA = II.getAction())
277 IA->isDeviceOffloading(Action::OFK_OpenMP)))
278 continue;
279
280 if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
281 // Don't try to pass LLVM inputs unless we have native support.
282 D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
283
284 // Add filenames immediately.
285 if (II.isFilename()) {
286 CmdArgs.push_back(II.getFilename());
287 continue;
288 }
289
290 // In some error cases, the input could be Nothing; skip those.
291 if (II.isNothing())
292 continue;
293
294 // Otherwise, this is a linker input argument.
295 const Arg &A = II.getInputArg();
296
297 // Handle reserved library options.
298 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
299 TC.AddCXXStdlibLibArgs(Args, CmdArgs);
300 else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
301 TC.AddCCKextLibArgs(Args, CmdArgs);
302 else
303 A.renderAsInput(Args, CmdArgs);
304 }
305}
306
308 const ToolChain &TC, const llvm::opt::ArgList &Args,
309 llvm::opt::ArgStringList &CmdArgs) {
310 // GNU ld supports --compress-debug-sections=none|zlib|zlib-gnu|zlib-gabi
311 // whereas zlib is an alias to zlib-gabi and zlib-gnu is obsoleted. Therefore
312 // -gz=none|zlib are translated to --compress-debug-sections=none|zlib. -gz
313 // is not translated since ld --compress-debug-sections option requires an
314 // argument.
315 if (const Arg *A = Args.getLastArg(options::OPT_gz_EQ)) {
316 StringRef V = A->getValue();
317 if (V == "none" || V == "zlib" || V == "zstd")
318 CmdArgs.push_back(Args.MakeArgString("--compress-debug-sections=" + V));
319 else
320 TC.getDriver().Diag(diag::err_drv_unsupported_option_argument)
321 << A->getSpelling() << V;
322 }
323}
324
325void tools::AddTargetFeature(const ArgList &Args,
326 std::vector<StringRef> &Features,
327 OptSpecifier OnOpt, OptSpecifier OffOpt,
328 StringRef FeatureName) {
329 if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {
330 if (A->getOption().matches(OnOpt))
331 Features.push_back(Args.MakeArgString("+" + FeatureName));
332 else
333 Features.push_back(Args.MakeArgString("-" + FeatureName));
334 }
335}
336
337/// Get the (LLVM) name of the AMDGPU gpu we are targeting.
338static std::string getAMDGPUTargetGPU(const llvm::Triple &T,
339 const ArgList &Args) {
340 Arg *MArch = Args.getLastArg(options::OPT_march_EQ);
341 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
342 auto GPUName = getProcessorFromTargetID(T, A->getValue());
343 return llvm::StringSwitch<std::string>(GPUName)
344 .Cases("rv630", "rv635", "r600")
345 .Cases("rv610", "rv620", "rs780", "rs880")
346 .Case("rv740", "rv770")
347 .Case("palm", "cedar")
348 .Cases("sumo", "sumo2", "sumo")
349 .Case("hemlock", "cypress")
350 .Case("aruba", "cayman")
351 .Default(GPUName.str());
352 }
353 if (MArch)
354 return getProcessorFromTargetID(T, MArch->getValue()).str();
355 return "";
356}
357
358static std::string getLanaiTargetCPU(const ArgList &Args) {
359 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
360 return A->getValue();
361 }
362 return "";
363}
364
365/// Get the (LLVM) name of the WebAssembly cpu we are targeting.
366static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
367 // If we have -mcpu=, use that.
368 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
369 StringRef CPU = A->getValue();
370
371#ifdef __wasm__
372 // Handle "native" by examining the host. "native" isn't meaningful when
373 // cross compiling, so only support this when the host is also WebAssembly.
374 if (CPU == "native")
375 return llvm::sys::getHostCPUName();
376#endif
377
378 return CPU;
379 }
380
381 return "generic";
382}
383
384std::string tools::getCPUName(const Driver &D, const ArgList &Args,
385 const llvm::Triple &T, bool FromAs) {
386 Arg *A;
387
388 switch (T.getArch()) {
389 default:
390 return "";
391
392 case llvm::Triple::aarch64:
393 case llvm::Triple::aarch64_32:
394 case llvm::Triple::aarch64_be:
395 return aarch64::getAArch64TargetCPU(Args, T, A);
396
397 case llvm::Triple::arm:
398 case llvm::Triple::armeb:
399 case llvm::Triple::thumb:
400 case llvm::Triple::thumbeb: {
401 StringRef MArch, MCPU;
402 arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
403 return arm::getARMTargetCPU(MCPU, MArch, T);
404 }
405
406 case llvm::Triple::avr:
407 if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))
408 return A->getValue();
409 return "";
410
411 case llvm::Triple::m68k:
412 return m68k::getM68kTargetCPU(Args);
413
414 case llvm::Triple::mips:
415 case llvm::Triple::mipsel:
416 case llvm::Triple::mips64:
417 case llvm::Triple::mips64el: {
418 StringRef CPUName;
419 StringRef ABIName;
420 mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
421 return std::string(CPUName);
422 }
423
424 case llvm::Triple::nvptx:
425 case llvm::Triple::nvptx64:
426 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
427 return A->getValue();
428 return "";
429
430 case llvm::Triple::ppc:
431 case llvm::Triple::ppcle:
432 case llvm::Triple::ppc64:
433 case llvm::Triple::ppc64le:
434 return ppc::getPPCTargetCPU(D, Args, T);
435
436 case llvm::Triple::csky:
437 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
438 return A->getValue();
439 else if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
440 return A->getValue();
441 else
442 return "ck810";
443 case llvm::Triple::riscv32:
444 case llvm::Triple::riscv64:
445 return riscv::getRISCVTargetCPU(Args, T);
446
447 case llvm::Triple::bpfel:
448 case llvm::Triple::bpfeb:
449 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
450 return A->getValue();
451 return "";
452
453 case llvm::Triple::sparc:
454 case llvm::Triple::sparcel:
455 case llvm::Triple::sparcv9:
456 return sparc::getSparcTargetCPU(D, Args, T);
457
458 case llvm::Triple::x86:
459 case llvm::Triple::x86_64:
460 return x86::getX86TargetCPU(D, Args, T);
461
462 case llvm::Triple::hexagon:
463 return "hexagon" +
465
466 case llvm::Triple::lanai:
467 return getLanaiTargetCPU(Args);
468
469 case llvm::Triple::systemz:
470 return systemz::getSystemZTargetCPU(Args);
471
472 case llvm::Triple::r600:
473 case llvm::Triple::amdgcn:
474 return getAMDGPUTargetGPU(T, Args);
475
476 case llvm::Triple::wasm32:
477 case llvm::Triple::wasm64:
478 return std::string(getWebAssemblyTargetCPU(Args));
479 }
480}
481
483 const llvm::Triple &Triple,
484 const ArgList &Args,
485 std::vector<StringRef> &Features) {
486 handleTargetFeaturesGroup(D, Triple, Args, Features,
487 options::OPT_m_wasm_Features_Group);
488}
489
490void tools::getTargetFeatures(const Driver &D, const llvm::Triple &Triple,
491 const ArgList &Args, ArgStringList &CmdArgs,
492 bool ForAS, bool IsAux) {
493 std::vector<StringRef> Features;
494 switch (Triple.getArch()) {
495 default:
496 break;
497 case llvm::Triple::mips:
498 case llvm::Triple::mipsel:
499 case llvm::Triple::mips64:
500 case llvm::Triple::mips64el:
501 mips::getMIPSTargetFeatures(D, Triple, Args, Features);
502 break;
503 case llvm::Triple::arm:
504 case llvm::Triple::armeb:
505 case llvm::Triple::thumb:
506 case llvm::Triple::thumbeb:
507 arm::getARMTargetFeatures(D, Triple, Args, Features, ForAS);
508 break;
509 case llvm::Triple::ppc:
510 case llvm::Triple::ppcle:
511 case llvm::Triple::ppc64:
512 case llvm::Triple::ppc64le:
513 ppc::getPPCTargetFeatures(D, Triple, Args, Features);
514 break;
515 case llvm::Triple::riscv32:
516 case llvm::Triple::riscv64:
517 riscv::getRISCVTargetFeatures(D, Triple, Args, Features);
518 break;
519 case llvm::Triple::systemz:
520 systemz::getSystemZTargetFeatures(D, Args, Features);
521 break;
522 case llvm::Triple::aarch64:
523 case llvm::Triple::aarch64_32:
524 case llvm::Triple::aarch64_be:
525 aarch64::getAArch64TargetFeatures(D, Triple, Args, Features, ForAS);
526 break;
527 case llvm::Triple::x86:
528 case llvm::Triple::x86_64:
529 x86::getX86TargetFeatures(D, Triple, Args, Features);
530 break;
531 case llvm::Triple::hexagon:
532 hexagon::getHexagonTargetFeatures(D, Triple, Args, Features);
533 break;
534 case llvm::Triple::wasm32:
535 case llvm::Triple::wasm64:
536 getWebAssemblyTargetFeatures(D, Triple, Args, Features);
537 break;
538 case llvm::Triple::sparc:
539 case llvm::Triple::sparcel:
540 case llvm::Triple::sparcv9:
541 sparc::getSparcTargetFeatures(D, Args, Features);
542 break;
543 case llvm::Triple::r600:
544 case llvm::Triple::amdgcn:
545 amdgpu::getAMDGPUTargetFeatures(D, Triple, Args, Features);
546 break;
547 case llvm::Triple::nvptx:
548 case llvm::Triple::nvptx64:
549 NVPTX::getNVPTXTargetFeatures(D, Triple, Args, Features);
550 break;
551 case llvm::Triple::m68k:
552 m68k::getM68kTargetFeatures(D, Triple, Args, Features);
553 break;
554 case llvm::Triple::msp430:
555 msp430::getMSP430TargetFeatures(D, Args, Features);
556 break;
557 case llvm::Triple::ve:
558 ve::getVETargetFeatures(D, Args, Features);
559 break;
560 case llvm::Triple::csky:
561 csky::getCSKYTargetFeatures(D, Triple, Args, CmdArgs, Features);
562 break;
563 case llvm::Triple::loongarch32:
564 case llvm::Triple::loongarch64:
565 loongarch::getLoongArchTargetFeatures(D, Triple, Args, Features);
566 break;
567 }
568
569 for (auto Feature : unifyTargetFeatures(Features)) {
570 CmdArgs.push_back(IsAux ? "-aux-target-feature" : "-target-feature");
571 CmdArgs.push_back(Feature.data());
572 }
573}
574
575llvm::StringRef tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
576 Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
577 if (!LtoJobsArg)
578 return {};
579 if (!llvm::get_threadpool_strategy(LtoJobsArg->getValue()))
580 D.Diag(diag::err_drv_invalid_int_value)
581 << LtoJobsArg->getAsString(Args) << LtoJobsArg->getValue();
582 return LtoJobsArg->getValue();
583}
584
585// CloudABI and PS4/PS5 use -ffunction-sections and -fdata-sections by default.
586bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
587 return Triple.getOS() == llvm::Triple::CloudABI || Triple.isPS();
588}
589
590void tools::addLTOOptions(const ToolChain &ToolChain, const ArgList &Args,
591 ArgStringList &CmdArgs, const InputInfo &Output,
592 const InputInfo &Input, bool IsThinLTO) {
593 const bool IsOSAIX = ToolChain.getTriple().isOSAIX();
594 const bool IsAMDGCN = ToolChain.getTriple().isAMDGCN();
595 const char *Linker = Args.MakeArgString(ToolChain.GetLinkerPath());
596 const Driver &D = ToolChain.getDriver();
597 if (llvm::sys::path::filename(Linker) != "ld.lld" &&
598 llvm::sys::path::stem(Linker) != "ld.lld") {
599 // Tell the linker to load the plugin. This has to come before
600 // AddLinkerInputs as gold requires -plugin and AIX ld requires -bplugin to
601 // come before any -plugin-opt/-bplugin_opt that -Wl might forward.
602 const char *PluginPrefix = IsOSAIX ? "-bplugin:" : "";
603 const char *PluginName = IsOSAIX ? "/libLTO" : "/LLVMgold";
604
605 if (!IsOSAIX)
606 CmdArgs.push_back("-plugin");
607
608#if defined(_WIN32)
609 const char *Suffix = ".dll";
610#elif defined(__APPLE__)
611 const char *Suffix = ".dylib";
612#else
613 const char *Suffix = ".so";
614#endif
615
616 SmallString<1024> Plugin;
617 llvm::sys::path::native(Twine(D.Dir) +
618 "/../" CLANG_INSTALL_LIBDIR_BASENAME +
619 PluginName + Suffix,
620 Plugin);
621 CmdArgs.push_back(Args.MakeArgString(Twine(PluginPrefix) + Plugin));
622 }
623
624 const char *PluginOptPrefix = IsOSAIX ? "-bplugin_opt:" : "-plugin-opt=";
625 const char *ExtraDash = IsOSAIX ? "-" : "";
626
627 // Note, this solution is far from perfect, better to encode it into IR
628 // metadata, but this may not be worth it, since it looks like aranges is on
629 // the way out.
630 if (Args.hasArg(options::OPT_gdwarf_aranges)) {
631 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +
632 "-generate-arange-section"));
633 }
634
635 // Try to pass driver level flags relevant to LTO code generation down to
636 // the plugin.
637
638 // Handle flags for selecting CPU variants.
639 std::string CPU = getCPUName(D, Args, ToolChain.getTriple());
640 if (!CPU.empty())
641 CmdArgs.push_back(
642 Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash + "mcpu=" + CPU));
643
644 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
645 // The optimization level matches
646 // CompilerInvocation.cpp:getOptimizationLevel().
647 StringRef OOpt;
648 if (A->getOption().matches(options::OPT_O4) ||
649 A->getOption().matches(options::OPT_Ofast))
650 OOpt = "3";
651 else if (A->getOption().matches(options::OPT_O)) {
652 OOpt = A->getValue();
653 if (OOpt == "g")
654 OOpt = "1";
655 else if (OOpt == "s" || OOpt == "z")
656 OOpt = "2";
657 } else if (A->getOption().matches(options::OPT_O0))
658 OOpt = "0";
659 if (!OOpt.empty()) {
660 CmdArgs.push_back(
661 Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash + "O" + OOpt));
662 if (IsAMDGCN)
663 CmdArgs.push_back(Args.MakeArgString(Twine("--lto-CGO") + OOpt));
664 }
665 }
666
667 if (Args.hasArg(options::OPT_gsplit_dwarf))
668 CmdArgs.push_back(Args.MakeArgString(
669 Twine(PluginOptPrefix) + "dwo_dir=" + Output.getFilename() + "_dwo"));
670
671 if (IsThinLTO)
672 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + "thinlto"));
673
674 StringRef Parallelism = getLTOParallelism(Args, D);
675 if (!Parallelism.empty())
676 CmdArgs.push_back(
677 Args.MakeArgString(Twine(PluginOptPrefix) + "jobs=" + Parallelism));
678
679 // If an explicit debugger tuning argument appeared, pass it along.
680 if (Arg *A =
681 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
682 if (A->getOption().matches(options::OPT_glldb))
683 CmdArgs.push_back(
684 Args.MakeArgString(Twine(PluginOptPrefix) + "-debugger-tune=lldb"));
685 else if (A->getOption().matches(options::OPT_gsce))
686 CmdArgs.push_back(
687 Args.MakeArgString(Twine(PluginOptPrefix) + "-debugger-tune=sce"));
688 else if (A->getOption().matches(options::OPT_gdbx))
689 CmdArgs.push_back(
690 Args.MakeArgString(Twine(PluginOptPrefix) + "-debugger-tune=dbx"));
691 else
692 CmdArgs.push_back(
693 Args.MakeArgString(Twine(PluginOptPrefix) + "-debugger-tune=gdb"));
694 }
695
696 if (IsOSAIX) {
697 // On AIX, clang assumes strict-dwarf is true if any debug option is
698 // specified, unless it is told explicitly not to assume so.
699 Arg *A = Args.getLastArg(options::OPT_g_Group);
700 bool EnableDebugInfo = A && !A->getOption().matches(options::OPT_g0) &&
701 !A->getOption().matches(options::OPT_ggdb0);
702 if (EnableDebugInfo && Args.hasFlag(options::OPT_gstrict_dwarf,
703 options::OPT_gno_strict_dwarf, true))
704 CmdArgs.push_back(
705 Args.MakeArgString(Twine(PluginOptPrefix) + "-strict-dwarf=true"));
706
707 for (const Arg *A : Args.filtered_reverse(options::OPT_mabi_EQ)) {
708 StringRef V = A->getValue();
709 if (V == "vec-default")
710 break;
711 if (V == "vec-extabi") {
712 CmdArgs.push_back(
713 Args.MakeArgString(Twine(PluginOptPrefix) + "-vec-extabi"));
714 break;
715 }
716 }
717 }
718
719 bool UseSeparateSections =
721
722 if (Args.hasFlag(options::OPT_ffunction_sections,
723 options::OPT_fno_function_sections, UseSeparateSections))
724 CmdArgs.push_back(
725 Args.MakeArgString(Twine(PluginOptPrefix) + "-function-sections=1"));
726 else if (Args.hasArg(options::OPT_fno_function_sections))
727 CmdArgs.push_back(
728 Args.MakeArgString(Twine(PluginOptPrefix) + "-function-sections=0"));
729
730 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
731 UseSeparateSections))
732 CmdArgs.push_back(
733 Args.MakeArgString(Twine(PluginOptPrefix) + "-data-sections=1"));
734 else if (Args.hasArg(options::OPT_fno_data_sections))
735 CmdArgs.push_back(
736 Args.MakeArgString(Twine(PluginOptPrefix) + "-data-sections=0"));
737
738 if (Args.hasArg(options::OPT_mxcoff_roptr) ||
739 Args.hasArg(options::OPT_mno_xcoff_roptr)) {
740 bool HasRoptr = Args.hasFlag(options::OPT_mxcoff_roptr,
741 options::OPT_mno_xcoff_roptr, false);
742 StringRef OptStr = HasRoptr ? "-mxcoff-roptr" : "-mno-xcoff-roptr";
743
744 if (!IsOSAIX)
745 D.Diag(diag::err_drv_unsupported_opt_for_target)
746 << OptStr << ToolChain.getTriple().str();
747
748 if (HasRoptr) {
749 if (!Args.hasFlag(options::OPT_fdata_sections,
750 options::OPT_fno_data_sections, UseSeparateSections))
751 D.Diag(diag::err_roptr_requires_data_sections);
752
753 CmdArgs.push_back(
754 Args.MakeArgString(Twine(PluginOptPrefix) + "-mxcoff-roptr"));
755 }
756 }
757
758 // Pass an option to enable split machine functions.
759 if (auto *A = Args.getLastArg(options::OPT_fsplit_machine_functions,
760 options::OPT_fno_split_machine_functions)) {
761 if (A->getOption().matches(options::OPT_fsplit_machine_functions))
762 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +
763 "-split-machine-functions"));
764 }
765
766 if (Arg *A = getLastProfileSampleUseArg(Args)) {
767 StringRef FName = A->getValue();
768 if (!llvm::sys::fs::exists(FName))
769 D.Diag(diag::err_drv_no_such_file) << FName;
770 else
771 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +
772 "sample-profile=" + FName));
773 }
774
775 if (auto *CSPGOGenerateArg = getLastCSProfileGenerateArg(Args)) {
776 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash +
777 "cs-profile-generate"));
778 if (CSPGOGenerateArg->getOption().matches(
779 options::OPT_fcs_profile_generate_EQ)) {
780 SmallString<128> Path(CSPGOGenerateArg->getValue());
781 llvm::sys::path::append(Path, "default_%m.profraw");
782 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash +
783 "cs-profile-path=" + Path));
784 } else
785 CmdArgs.push_back(
786 Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash +
787 "cs-profile-path=default_%m.profraw"));
788 } else if (auto *ProfileUseArg = getLastProfileUseArg(Args)) {
789 SmallString<128> Path(
790 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
791 if (Path.empty() || llvm::sys::fs::is_directory(Path))
792 llvm::sys::path::append(Path, "default.profdata");
793 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash +
794 "cs-profile-path=" + Path));
795 }
796
797 // This controls whether or not we perform JustMyCode instrumentation.
798 if (Args.hasFlag(options::OPT_fjmc, options::OPT_fno_jmc, false)) {
799 if (ToolChain.getEffectiveTriple().isOSBinFormatELF())
800 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +
801 "-enable-jmc-instrument"));
802 else
803 D.Diag(clang::diag::warn_drv_fjmc_for_elf_only);
804 }
805
806 if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
807 ToolChain.getTriple().hasDefaultEmulatedTLS())) {
808 CmdArgs.push_back(
809 Args.MakeArgString(Twine(PluginOptPrefix) + "-emulated-tls"));
810 }
811
812 if (Args.hasFlag(options::OPT_fstack_size_section,
813 options::OPT_fno_stack_size_section, false))
814 CmdArgs.push_back(
815 Args.MakeArgString(Twine(PluginOptPrefix) + "-stack-size-section"));
816
817 // Setup statistics file output.
818 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
819 if (!StatsFile.empty())
820 CmdArgs.push_back(
821 Args.MakeArgString(Twine(PluginOptPrefix) + "stats-file=" + StatsFile));
822
823 // Setup crash diagnostics dir.
824 if (Arg *A = Args.getLastArg(options::OPT_fcrash_diagnostics_dir))
825 CmdArgs.push_back(Args.MakeArgString(
826 Twine(PluginOptPrefix) + "-crash-diagnostics-dir=" + A->getValue()));
827
828 addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/true, PluginOptPrefix);
829
830 // Handle remark diagnostics on screen options: '-Rpass-*'.
831 renderRpassOptions(Args, CmdArgs, PluginOptPrefix);
832
833 // Handle serialized remarks options: '-fsave-optimization-record'
834 // and '-foptimization-record-*'.
835 if (willEmitRemarks(Args))
836 renderRemarksOptions(Args, CmdArgs, ToolChain.getEffectiveTriple(), Input,
837 Output, PluginOptPrefix);
838
839 // Handle remarks hotness/threshold related options.
840 renderRemarksHotnessOptions(Args, CmdArgs, PluginOptPrefix);
841
843 /*IsLTO=*/true, PluginOptPrefix);
844}
845
847 const ArgList &Args,
848 ArgStringList &CmdArgs) {
849 // Default to clang lib / lib64 folder, i.e. the same location as device
850 // runtime.
851 SmallString<256> DefaultLibPath =
852 llvm::sys::path::parent_path(TC.getDriver().Dir);
853 llvm::sys::path::append(DefaultLibPath, CLANG_INSTALL_LIBDIR_BASENAME);
854 CmdArgs.push_back(Args.MakeArgString("-L" + DefaultLibPath));
855}
856
857void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
858 ArgStringList &CmdArgs) {
859 // Enable -frtlib-add-rpath by default for the case of VE.
860 const bool IsVE = TC.getTriple().isVE();
861 bool DefaultValue = IsVE;
862 if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
863 options::OPT_fno_rtlib_add_rpath, DefaultValue))
864 return;
865
866 for (const auto &CandidateRPath : TC.getArchSpecificLibPaths()) {
867 if (TC.getVFS().exists(CandidateRPath)) {
868 CmdArgs.push_back("-rpath");
869 CmdArgs.push_back(Args.MakeArgString(CandidateRPath));
870 }
871 }
872}
873
874bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
875 const ArgList &Args, bool ForceStaticHostRuntime,
876 bool IsOffloadingHost, bool GompNeedsRT) {
877 if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
878 options::OPT_fno_openmp, false))
879 return false;
880
882
883 if (RTKind == Driver::OMPRT_Unknown)
884 // Already diagnosed.
885 return false;
886
887 if (ForceStaticHostRuntime)
888 CmdArgs.push_back("-Bstatic");
889
890 switch (RTKind) {
892 CmdArgs.push_back("-lomp");
893 break;
895 CmdArgs.push_back("-lgomp");
896 break;
898 CmdArgs.push_back("-liomp5");
899 break;
901 break;
902 }
903
904 if (ForceStaticHostRuntime)
905 CmdArgs.push_back("-Bdynamic");
906
907 if (RTKind == Driver::OMPRT_GOMP && GompNeedsRT)
908 CmdArgs.push_back("-lrt");
909
910 if (IsOffloadingHost)
911 CmdArgs.push_back("-lomptarget");
912
913 if (IsOffloadingHost && !Args.hasArg(options::OPT_nogpulib))
914 CmdArgs.push_back("-lomptarget.devicertl");
915
916 addArchSpecificRPath(TC, Args, CmdArgs);
917 addOpenMPRuntimeLibraryPath(TC, Args, CmdArgs);
918
919 return true;
920}
921
923 llvm::opt::ArgStringList &CmdArgs) {
924 if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
925 CmdArgs.push_back("Fortran_main.lib");
926 CmdArgs.push_back("FortranRuntime.lib");
927 CmdArgs.push_back("FortranDecimal.lib");
928 } else {
929 CmdArgs.push_back("-lFortran_main");
930 CmdArgs.push_back("-lFortranRuntime");
931 CmdArgs.push_back("-lFortranDecimal");
932 }
933}
934
936 const llvm::opt::ArgList &Args,
937 ArgStringList &CmdArgs) {
938 // NOTE: Generating executables by Flang is considered an "experimental"
939 // feature and hence this is guarded with a command line option.
940 // TODO: Make this work unconditionally once Flang is mature enough.
941 if (!Args.hasArg(options::OPT_flang_experimental_exec))
942 return;
943
944 // Default to the <driver-path>/../lib directory. This works fine on the
945 // platforms that we have tested so far. We will probably have to re-fine
946 // this in the future. In particular, on some platforms, we may need to use
947 // lib64 instead of lib.
948 SmallString<256> DefaultLibPath =
949 llvm::sys::path::parent_path(TC.getDriver().Dir);
950 llvm::sys::path::append(DefaultLibPath, "lib");
951 if (TC.getTriple().isKnownWindowsMSVCEnvironment())
952 CmdArgs.push_back(Args.MakeArgString("-libpath:" + DefaultLibPath));
953 else
954 CmdArgs.push_back(Args.MakeArgString("-L" + DefaultLibPath));
955}
956
957static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
958 ArgStringList &CmdArgs, StringRef Sanitizer,
959 bool IsShared, bool IsWhole) {
960 // Wrap any static runtimes that must be forced into executable in
961 // whole-archive.
962 if (IsWhole) CmdArgs.push_back("--whole-archive");
963 CmdArgs.push_back(TC.getCompilerRTArgString(
964 Args, Sanitizer, IsShared ? ToolChain::FT_Shared : ToolChain::FT_Static));
965 if (IsWhole) CmdArgs.push_back("--no-whole-archive");
966
967 if (IsShared) {
968 addArchSpecificRPath(TC, Args, CmdArgs);
969 }
970}
971
972// Tries to use a file with the list of dynamic symbols that need to be exported
973// from the runtime library. Returns true if the file was found.
974static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
975 ArgStringList &CmdArgs,
976 StringRef Sanitizer) {
977 // Solaris ld defaults to --export-dynamic behaviour but doesn't support
978 // the option, so don't try to pass it.
979 if (TC.getTriple().getOS() == llvm::Triple::Solaris)
980 return true;
981 SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
982 if (llvm::sys::fs::exists(SanRT + ".syms")) {
983 CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
984 return true;
985 }
986 return false;
987}
988
989const char *tools::getAsNeededOption(const ToolChain &TC, bool as_needed) {
990 assert(!TC.getTriple().isOSAIX() &&
991 "AIX linker does not support any form of --as-needed option yet.");
992
993 // While the Solaris 11.2 ld added --as-needed/--no-as-needed as aliases
994 // for the native forms -z ignore/-z record, they are missing in Illumos,
995 // so always use the native form.
996 if (TC.getTriple().isOSSolaris())
997 return as_needed ? "-zignore" : "-zrecord";
998 else
999 return as_needed ? "--as-needed" : "--no-as-needed";
1000}
1001
1003 ArgStringList &CmdArgs) {
1004 // Force linking against the system libraries sanitizers depends on
1005 // (see PR15823 why this is necessary).
1006 CmdArgs.push_back(getAsNeededOption(TC, false));
1007 // There's no libpthread or librt on RTEMS & Android.
1008 if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&
1009 !TC.getTriple().isAndroid() && !TC.getTriple().isOHOSFamily()) {
1010 CmdArgs.push_back("-lpthread");
1011 if (!TC.getTriple().isOSOpenBSD())
1012 CmdArgs.push_back("-lrt");
1013 }
1014 CmdArgs.push_back("-lm");
1015 // There's no libdl on all OSes.
1016 if (!TC.getTriple().isOSFreeBSD() && !TC.getTriple().isOSNetBSD() &&
1017 !TC.getTriple().isOSOpenBSD() &&
1018 TC.getTriple().getOS() != llvm::Triple::RTEMS)
1019 CmdArgs.push_back("-ldl");
1020 // Required for backtrace on some OSes
1021 if (TC.getTriple().isOSFreeBSD() ||
1022 TC.getTriple().isOSNetBSD() ||
1023 TC.getTriple().isOSOpenBSD())
1024 CmdArgs.push_back("-lexecinfo");
1025 // There is no libresolv on Android, FreeBSD, OpenBSD, etc. On musl
1026 // libresolv.a, even if exists, is an empty archive to satisfy POSIX -lresolv
1027 // requirement.
1028 if (TC.getTriple().isOSLinux() && !TC.getTriple().isAndroid() &&
1029 !TC.getTriple().isMusl())
1030 CmdArgs.push_back("-lresolv");
1031}
1032
1033static void
1034collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
1035 SmallVectorImpl<StringRef> &SharedRuntimes,
1036 SmallVectorImpl<StringRef> &StaticRuntimes,
1037 SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
1038 SmallVectorImpl<StringRef> &HelperStaticRuntimes,
1039 SmallVectorImpl<StringRef> &RequiredSymbols) {
1040 const SanitizerArgs &SanArgs = TC.getSanitizerArgs(Args);
1041 // Collect shared runtimes.
1042 if (SanArgs.needsSharedRt()) {
1043 if (SanArgs.needsAsanRt() && SanArgs.linkRuntimes()) {
1044 SharedRuntimes.push_back("asan");
1045 if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
1046 HelperStaticRuntimes.push_back("asan-preinit");
1047 }
1048 if (SanArgs.needsMemProfRt() && SanArgs.linkRuntimes()) {
1049 SharedRuntimes.push_back("memprof");
1050 if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
1051 HelperStaticRuntimes.push_back("memprof-preinit");
1052 }
1053 if (SanArgs.needsUbsanRt() && SanArgs.linkRuntimes()) {
1054 if (SanArgs.requiresMinimalRuntime())
1055 SharedRuntimes.push_back("ubsan_minimal");
1056 else
1057 SharedRuntimes.push_back("ubsan_standalone");
1058 }
1059 if (SanArgs.needsScudoRt() && SanArgs.linkRuntimes()) {
1060 SharedRuntimes.push_back("scudo_standalone");
1061 }
1062 if (SanArgs.needsTsanRt() && SanArgs.linkRuntimes())
1063 SharedRuntimes.push_back("tsan");
1064 if (SanArgs.needsHwasanRt() && SanArgs.linkRuntimes()) {
1065 if (SanArgs.needsHwasanAliasesRt())
1066 SharedRuntimes.push_back("hwasan_aliases");
1067 else
1068 SharedRuntimes.push_back("hwasan");
1069 if (!Args.hasArg(options::OPT_shared))
1070 HelperStaticRuntimes.push_back("hwasan-preinit");
1071 }
1072 }
1073
1074 // The stats_client library is also statically linked into DSOs.
1075 if (SanArgs.needsStatsRt() && SanArgs.linkRuntimes())
1076 StaticRuntimes.push_back("stats_client");
1077
1078 // Always link the static runtime regardless of DSO or executable.
1079 if (SanArgs.needsAsanRt())
1080 HelperStaticRuntimes.push_back("asan_static");
1081
1082 // Collect static runtimes.
1083 if (Args.hasArg(options::OPT_shared)) {
1084 // Don't link static runtimes into DSOs.
1085 return;
1086 }
1087
1088 // Each static runtime that has a DSO counterpart above is excluded below,
1089 // but runtimes that exist only as static are not affected by needsSharedRt.
1090
1091 if (!SanArgs.needsSharedRt() && SanArgs.needsAsanRt() && SanArgs.linkRuntimes()) {
1092 StaticRuntimes.push_back("asan");
1093 if (SanArgs.linkCXXRuntimes())
1094 StaticRuntimes.push_back("asan_cxx");
1095 }
1096
1097 if (!SanArgs.needsSharedRt() && SanArgs.needsMemProfRt() &&
1098 SanArgs.linkRuntimes()) {
1099 StaticRuntimes.push_back("memprof");
1100 if (SanArgs.linkCXXRuntimes())
1101 StaticRuntimes.push_back("memprof_cxx");
1102 }
1103
1104 if (!SanArgs.needsSharedRt() && SanArgs.needsHwasanRt() && SanArgs.linkRuntimes()) {
1105 if (SanArgs.needsHwasanAliasesRt()) {
1106 StaticRuntimes.push_back("hwasan_aliases");
1107 if (SanArgs.linkCXXRuntimes())
1108 StaticRuntimes.push_back("hwasan_aliases_cxx");
1109 } else {
1110 StaticRuntimes.push_back("hwasan");
1111 if (SanArgs.linkCXXRuntimes())
1112 StaticRuntimes.push_back("hwasan_cxx");
1113 }
1114 }
1115 if (SanArgs.needsDfsanRt() && SanArgs.linkRuntimes())
1116 StaticRuntimes.push_back("dfsan");
1117 if (SanArgs.needsLsanRt() && SanArgs.linkRuntimes())
1118 StaticRuntimes.push_back("lsan");
1119 if (SanArgs.needsMsanRt() && SanArgs.linkRuntimes()) {
1120 StaticRuntimes.push_back("msan");
1121 if (SanArgs.linkCXXRuntimes())
1122 StaticRuntimes.push_back("msan_cxx");
1123 }
1124 if (!SanArgs.needsSharedRt() && SanArgs.needsTsanRt() &&
1125 SanArgs.linkRuntimes()) {
1126 StaticRuntimes.push_back("tsan");
1127 if (SanArgs.linkCXXRuntimes())
1128 StaticRuntimes.push_back("tsan_cxx");
1129 }
1130 if (!SanArgs.needsSharedRt() && SanArgs.needsUbsanRt() && SanArgs.linkRuntimes()) {
1131 if (SanArgs.requiresMinimalRuntime()) {
1132 StaticRuntimes.push_back("ubsan_minimal");
1133 } else {
1134 StaticRuntimes.push_back("ubsan_standalone");
1135 if (SanArgs.linkCXXRuntimes())
1136 StaticRuntimes.push_back("ubsan_standalone_cxx");
1137 }
1138 }
1139 if (SanArgs.needsSafeStackRt() && SanArgs.linkRuntimes()) {
1140 NonWholeStaticRuntimes.push_back("safestack");
1141 RequiredSymbols.push_back("__safestack_init");
1142 }
1143 if (!(SanArgs.needsSharedRt() && SanArgs.needsUbsanRt() && SanArgs.linkRuntimes())) {
1144 if (SanArgs.needsCfiRt() && SanArgs.linkRuntimes())
1145 StaticRuntimes.push_back("cfi");
1146 if (SanArgs.needsCfiDiagRt() && SanArgs.linkRuntimes()) {
1147 StaticRuntimes.push_back("cfi_diag");
1148 if (SanArgs.linkCXXRuntimes())
1149 StaticRuntimes.push_back("ubsan_standalone_cxx");
1150 }
1151 }
1152 if (SanArgs.needsStatsRt() && SanArgs.linkRuntimes()) {
1153 NonWholeStaticRuntimes.push_back("stats");
1154 RequiredSymbols.push_back("__sanitizer_stats_register");
1155 }
1156 if (!SanArgs.needsSharedRt() && SanArgs.needsScudoRt() && SanArgs.linkRuntimes()) {
1157 StaticRuntimes.push_back("scudo_standalone");
1158 if (SanArgs.linkCXXRuntimes())
1159 StaticRuntimes.push_back("scudo_standalone_cxx");
1160 }
1161}
1162
1163// Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
1164// C runtime, etc). Returns true if sanitizer system deps need to be linked in.
1165bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
1166 ArgStringList &CmdArgs) {
1167 SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
1168 NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
1169 collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
1170 NonWholeStaticRuntimes, HelperStaticRuntimes,
1171 RequiredSymbols);
1172
1173 const SanitizerArgs &SanArgs = TC.getSanitizerArgs(Args);
1174 // Inject libfuzzer dependencies.
1175 if (SanArgs.needsFuzzer() && SanArgs.linkRuntimes() &&
1176 !Args.hasArg(options::OPT_shared)) {
1177
1178 addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
1179 if (SanArgs.needsFuzzerInterceptors())
1180 addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer_interceptors", false,
1181 true);
1182 if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx)) {
1183 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
1184 !Args.hasArg(options::OPT_static);
1185 if (OnlyLibstdcxxStatic)
1186 CmdArgs.push_back("-Bstatic");
1187 TC.AddCXXStdlibLibArgs(Args, CmdArgs);
1188 if (OnlyLibstdcxxStatic)
1189 CmdArgs.push_back("-Bdynamic");
1190 }
1191 }
1192
1193 for (auto RT : SharedRuntimes)
1194 addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
1195 for (auto RT : HelperStaticRuntimes)
1196 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
1197 bool AddExportDynamic = false;
1198 for (auto RT : StaticRuntimes) {
1199 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
1200 AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
1201 }
1202 for (auto RT : NonWholeStaticRuntimes) {
1203 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
1204 AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
1205 }
1206 for (auto S : RequiredSymbols) {
1207 CmdArgs.push_back("-u");
1208 CmdArgs.push_back(Args.MakeArgString(S));
1209 }
1210 // If there is a static runtime with no dynamic list, force all the symbols
1211 // to be dynamic to be sure we export sanitizer interface functions.
1212 if (AddExportDynamic)
1213 CmdArgs.push_back("--export-dynamic");
1214
1215 if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
1216 CmdArgs.push_back("--export-dynamic-symbol=__cfi_check");
1217
1218 if (SanArgs.hasMemTag()) {
1219 if (!TC.getTriple().isAndroid()) {
1220 TC.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1221 << "-fsanitize=memtag*" << TC.getTriple().str();
1222 }
1223 CmdArgs.push_back(
1224 Args.MakeArgString("--android-memtag-mode=" + SanArgs.getMemtagMode()));
1225 if (SanArgs.hasMemtagHeap())
1226 CmdArgs.push_back("--android-memtag-heap");
1227 if (SanArgs.hasMemtagStack())
1228 CmdArgs.push_back("--android-memtag-stack");
1229 }
1230
1231 return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
1232}
1233
1234bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {
1235 if (Args.hasArg(options::OPT_shared))
1236 return false;
1237
1238 if (TC.getXRayArgs().needsXRayRt()) {
1239 CmdArgs.push_back("-whole-archive");
1240 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray"));
1241 for (const auto &Mode : TC.getXRayArgs().modeList())
1242 CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode));
1243 CmdArgs.push_back("-no-whole-archive");
1244 return true;
1245 }
1246
1247 return false;
1248}
1249
1250void tools::linkXRayRuntimeDeps(const ToolChain &TC, ArgStringList &CmdArgs) {
1251 CmdArgs.push_back(getAsNeededOption(TC, false));
1252 CmdArgs.push_back("-lpthread");
1253 if (!TC.getTriple().isOSOpenBSD())
1254 CmdArgs.push_back("-lrt");
1255 CmdArgs.push_back("-lm");
1256
1257 if (!TC.getTriple().isOSFreeBSD() &&
1258 !TC.getTriple().isOSNetBSD() &&
1259 !TC.getTriple().isOSOpenBSD())
1260 CmdArgs.push_back("-ldl");
1261}
1262
1263bool tools::areOptimizationsEnabled(const ArgList &Args) {
1264 // Find the last -O arg and see if it is non-zero.
1265 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
1266 return !A->getOption().matches(options::OPT_O0);
1267 // Defaults to -O0.
1268 return false;
1269}
1270
1271const char *tools::SplitDebugName(const JobAction &JA, const ArgList &Args,
1272 const InputInfo &Input,
1273 const InputInfo &Output) {
1274 auto AddPostfix = [JA](auto &F) {
1276 F += (Twine("_") + JA.getOffloadingArch()).str();
1277 F += ".dwo";
1278 };
1279 if (Arg *A = Args.getLastArg(options::OPT_gsplit_dwarf_EQ))
1280 if (StringRef(A->getValue()) == "single")
1281 return Args.MakeArgString(Output.getFilename());
1282
1284 if (const Arg *A = Args.getLastArg(options::OPT_dumpdir)) {
1285 T = A->getValue();
1286 } else {
1287 Arg *FinalOutput = Args.getLastArg(options::OPT_o);
1288 if (FinalOutput && Args.hasArg(options::OPT_c)) {
1289 T = FinalOutput->getValue();
1290 llvm::sys::path::remove_filename(T);
1291 llvm::sys::path::append(T,
1292 llvm::sys::path::stem(FinalOutput->getValue()));
1293 AddPostfix(T);
1294 return Args.MakeArgString(T);
1295 }
1296 }
1297
1298 T += llvm::sys::path::stem(Input.getBaseInput());
1299 AddPostfix(T);
1300 return Args.MakeArgString(T);
1301}
1302
1303void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
1304 const JobAction &JA, const ArgList &Args,
1305 const InputInfo &Output, const char *OutFile) {
1306 ArgStringList ExtractArgs;
1307 ExtractArgs.push_back("--extract-dwo");
1308
1309 ArgStringList StripArgs;
1310 StripArgs.push_back("--strip-dwo");
1311
1312 // Grabbing the output of the earlier compile step.
1313 StripArgs.push_back(Output.getFilename());
1314 ExtractArgs.push_back(Output.getFilename());
1315 ExtractArgs.push_back(OutFile);
1316
1317 const char *Exec =
1318 Args.MakeArgString(TC.GetProgramPath(CLANG_DEFAULT_OBJCOPY));
1319 InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
1320
1321 // First extract the dwo sections.
1322 C.addCommand(std::make_unique<Command>(JA, T,
1324 Exec, ExtractArgs, II, Output));
1325
1326 // Then remove them from the original .o file.
1327 C.addCommand(std::make_unique<Command>(
1328 JA, T, ResponseFileSupport::AtFileCurCP(), Exec, StripArgs, II, Output));
1329}
1330
1331// Claim options we don't want to warn if they are unused. We do this for
1332// options that build systems might add but are unused when assembling or only
1333// running the preprocessor for example.
1334void tools::claimNoWarnArgs(const ArgList &Args) {
1335 // Don't warn about unused -f(no-)?lto. This can happen when we're
1336 // preprocessing, precompiling or assembling.
1337 Args.ClaimAllArgs(options::OPT_flto_EQ);
1338 Args.ClaimAllArgs(options::OPT_flto);
1339 Args.ClaimAllArgs(options::OPT_fno_lto);
1340}
1341
1342Arg *tools::getLastCSProfileGenerateArg(const ArgList &Args) {
1343 auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
1344 options::OPT_fcs_profile_generate_EQ,
1345 options::OPT_fno_profile_generate);
1346 if (CSPGOGenerateArg &&
1347 CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
1348 CSPGOGenerateArg = nullptr;
1349
1350 return CSPGOGenerateArg;
1351}
1352
1353Arg *tools::getLastProfileUseArg(const ArgList &Args) {
1354 auto *ProfileUseArg = Args.getLastArg(
1355 options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
1356 options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
1357 options::OPT_fno_profile_instr_use);
1358
1359 if (ProfileUseArg &&
1360 ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
1361 ProfileUseArg = nullptr;
1362
1363 return ProfileUseArg;
1364}
1365
1366Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
1367 auto *ProfileSampleUseArg = Args.getLastArg(
1368 options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
1369 options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
1370 options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
1371
1372 if (ProfileSampleUseArg &&
1373 (ProfileSampleUseArg->getOption().matches(
1374 options::OPT_fno_profile_sample_use) ||
1375 ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
1376 return nullptr;
1377
1378 return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
1379 options::OPT_fauto_profile_EQ);
1380}
1381
1382const char *tools::RelocationModelName(llvm::Reloc::Model Model) {
1383 switch (Model) {
1384 case llvm::Reloc::Static:
1385 return "static";
1386 case llvm::Reloc::PIC_:
1387 return "pic";
1388 case llvm::Reloc::DynamicNoPIC:
1389 return "dynamic-no-pic";
1390 case llvm::Reloc::ROPI:
1391 return "ropi";
1392 case llvm::Reloc::RWPI:
1393 return "rwpi";
1394 case llvm::Reloc::ROPI_RWPI:
1395 return "ropi-rwpi";
1396 }
1397 llvm_unreachable("Unknown Reloc::Model kind");
1398}
1399
1400/// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
1401/// smooshes them together with platform defaults, to decide whether
1402/// this compile should be using PIC mode or not. Returns a tuple of
1403/// (RelocationModel, PICLevel, IsPIE).
1404std::tuple<llvm::Reloc::Model, unsigned, bool>
1405tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
1406 const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
1407 const llvm::Triple &Triple = ToolChain.getTriple();
1408
1409 bool PIE = ToolChain.isPIEDefault(Args);
1410 bool PIC = PIE || ToolChain.isPICDefault();
1411 // The Darwin/MachO default to use PIC does not apply when using -static.
1412 if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))
1413 PIE = PIC = false;
1414 bool IsPICLevelTwo = PIC;
1415
1416 bool KernelOrKext =
1417 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
1418
1419 // Android-specific defaults for PIC/PIE
1420 if (Triple.isAndroid()) {
1421 switch (Triple.getArch()) {
1422 case llvm::Triple::arm:
1423 case llvm::Triple::armeb:
1424 case llvm::Triple::thumb:
1425 case llvm::Triple::thumbeb:
1426 case llvm::Triple::aarch64:
1427 case llvm::Triple::mips:
1428 case llvm::Triple::mipsel:
1429 case llvm::Triple::mips64:
1430 case llvm::Triple::mips64el:
1431 PIC = true; // "-fpic"
1432 break;
1433
1434 case llvm::Triple::x86:
1435 case llvm::Triple::x86_64:
1436 PIC = true; // "-fPIC"
1437 IsPICLevelTwo = true;
1438 break;
1439
1440 default:
1441 break;
1442 }
1443 }
1444
1445 // OHOS-specific defaults for PIC/PIE
1446 if (Triple.isOHOSFamily() && Triple.getArch() == llvm::Triple::aarch64)
1447 PIC = true;
1448
1449 // OpenBSD-specific defaults for PIE
1450 if (Triple.isOSOpenBSD()) {
1451 switch (ToolChain.getArch()) {
1452 case llvm::Triple::arm:
1453 case llvm::Triple::aarch64:
1454 case llvm::Triple::mips64:
1455 case llvm::Triple::mips64el:
1456 case llvm::Triple::x86:
1457 case llvm::Triple::x86_64:
1458 IsPICLevelTwo = false; // "-fpie"
1459 break;
1460
1461 case llvm::Triple::ppc:
1462 case llvm::Triple::sparcv9:
1463 IsPICLevelTwo = true; // "-fPIE"
1464 break;
1465
1466 default:
1467 break;
1468 }
1469 }
1470
1471 // The last argument relating to either PIC or PIE wins, and no
1472 // other argument is used. If the last argument is any flavor of the
1473 // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
1474 // option implicitly enables PIC at the same level.
1475 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
1476 options::OPT_fpic, options::OPT_fno_pic,
1477 options::OPT_fPIE, options::OPT_fno_PIE,
1478 options::OPT_fpie, options::OPT_fno_pie);
1479 if (Triple.isOSWindows() && !Triple.isOSCygMing() && LastPICArg &&
1480 LastPICArg == Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
1481 options::OPT_fPIE, options::OPT_fpie)) {
1482 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1483 << LastPICArg->getSpelling() << Triple.str();
1484 if (Triple.getArch() == llvm::Triple::x86_64)
1485 return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
1486 return std::make_tuple(llvm::Reloc::Static, 0U, false);
1487 }
1488
1489 // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
1490 // is forced, then neither PIC nor PIE flags will have no effect.
1492 if (LastPICArg) {
1493 Option O = LastPICArg->getOption();
1494 if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
1495 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
1496 PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
1497 PIC =
1498 PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
1499 IsPICLevelTwo =
1500 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
1501 } else {
1502 PIE = PIC = false;
1503 if (EffectiveTriple.isPS()) {
1504 Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
1505 StringRef Model = ModelArg ? ModelArg->getValue() : "";
1506 if (Model != "kernel") {
1507 PIC = true;
1508 ToolChain.getDriver().Diag(diag::warn_drv_ps_force_pic)
1509 << LastPICArg->getSpelling()
1510 << (EffectiveTriple.isPS4() ? "PS4" : "PS5");
1511 }
1512 }
1513 }
1514 }
1515 }
1516
1517 // Introduce a Darwin and PS4/PS5-specific hack. If the default is PIC, but
1518 // the PIC level would've been set to level 1, force it back to level 2 PIC
1519 // instead.
1520 if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS()))
1521 IsPICLevelTwo |= ToolChain.isPICDefault();
1522
1523 // This kernel flags are a trump-card: they will disable PIC/PIE
1524 // generation, independent of the argument order.
1525 if (KernelOrKext &&
1526 ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
1527 !EffectiveTriple.isWatchOS() && !EffectiveTriple.isDriverKit()))
1528 PIC = PIE = false;
1529
1530 if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
1531 // This is a very special mode. It trumps the other modes, almost no one
1532 // uses it, and it isn't even valid on any OS but Darwin.
1533 if (!Triple.isOSDarwin())
1534 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1535 << A->getSpelling() << Triple.str();
1536
1537 // FIXME: Warn when this flag trumps some other PIC or PIE flag.
1538
1539 // Only a forced PIC mode can cause the actual compile to have PIC defines
1540 // etc., no flags are sufficient. This behavior was selected to closely
1541 // match that of llvm-gcc and Apple GCC before that.
1543
1544 return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
1545 }
1546
1547 bool EmbeddedPISupported;
1548 switch (Triple.getArch()) {
1549 case llvm::Triple::arm:
1550 case llvm::Triple::armeb:
1551 case llvm::Triple::thumb:
1552 case llvm::Triple::thumbeb:
1553 EmbeddedPISupported = true;
1554 break;
1555 default:
1556 EmbeddedPISupported = false;
1557 break;
1558 }
1559
1560 bool ROPI = false, RWPI = false;
1561 Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
1562 if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
1563 if (!EmbeddedPISupported)
1564 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1565 << LastROPIArg->getSpelling() << Triple.str();
1566 ROPI = true;
1567 }
1568 Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
1569 if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
1570 if (!EmbeddedPISupported)
1571 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1572 << LastRWPIArg->getSpelling() << Triple.str();
1573 RWPI = true;
1574 }
1575
1576 // ROPI and RWPI are not compatible with PIC or PIE.
1577 if ((ROPI || RWPI) && (PIC || PIE))
1578 ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
1579
1580 if (Triple.isMIPS()) {
1581 StringRef CPUName;
1582 StringRef ABIName;
1583 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1584 // When targeting the N64 ABI, PIC is the default, except in the case
1585 // when the -mno-abicalls option is used. In that case we exit
1586 // at next check regardless of PIC being set below.
1587 if (ABIName == "n64")
1588 PIC = true;
1589 // When targettng MIPS with -mno-abicalls, it's always static.
1590 if(Args.hasArg(options::OPT_mno_abicalls))
1591 return std::make_tuple(llvm::Reloc::Static, 0U, false);
1592 // Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,
1593 // does not use PIC level 2 for historical reasons.
1594 IsPICLevelTwo = false;
1595 }
1596
1597 if (PIC)
1598 return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
1599
1600 llvm::Reloc::Model RelocM = llvm::Reloc::Static;
1601 if (ROPI && RWPI)
1602 RelocM = llvm::Reloc::ROPI_RWPI;
1603 else if (ROPI)
1604 RelocM = llvm::Reloc::ROPI;
1605 else if (RWPI)
1606 RelocM = llvm::Reloc::RWPI;
1607
1608 return std::make_tuple(RelocM, 0U, false);
1609}
1610
1611// `-falign-functions` indicates that the functions should be aligned to a
1612// 16-byte boundary.
1613//
1614// `-falign-functions=1` is the same as `-fno-align-functions`.
1615//
1616// The scalar `n` in `-falign-functions=n` must be an integral value between
1617// [0, 65536]. If the value is not a power-of-two, it will be rounded up to
1618// the nearest power-of-two.
1619//
1620// If we return `0`, the frontend will default to the backend's preferred
1621// alignment.
1622//
1623// NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`
1624// to mean `-falign-functions=16`. GCC defaults to the backend's preferred
1625// alignment. For unaligned functions, we default to the backend's preferred
1626// alignment.
1627unsigned tools::ParseFunctionAlignment(const ToolChain &TC,
1628 const ArgList &Args) {
1629 const Arg *A = Args.getLastArg(options::OPT_falign_functions,
1630 options::OPT_falign_functions_EQ,
1631 options::OPT_fno_align_functions);
1632 if (!A || A->getOption().matches(options::OPT_fno_align_functions))
1633 return 0;
1634
1635 if (A->getOption().matches(options::OPT_falign_functions))
1636 return 0;
1637
1638 unsigned Value = 0;
1639 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
1640 TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1641 << A->getAsString(Args) << A->getValue();
1642 return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;
1643}
1644
1646 ArgStringList &CmdArgs, llvm::codegenoptions::DebugInfoKind DebugInfoKind) {
1647 switch (DebugInfoKind) {
1648 case llvm::codegenoptions::DebugDirectivesOnly:
1649 CmdArgs.push_back("-debug-info-kind=line-directives-only");
1650 break;
1651 case llvm::codegenoptions::DebugLineTablesOnly:
1652 CmdArgs.push_back("-debug-info-kind=line-tables-only");
1653 break;
1654 case llvm::codegenoptions::DebugInfoConstructor:
1655 CmdArgs.push_back("-debug-info-kind=constructor");
1656 break;
1657 case llvm::codegenoptions::LimitedDebugInfo:
1658 CmdArgs.push_back("-debug-info-kind=limited");
1659 break;
1660 case llvm::codegenoptions::FullDebugInfo:
1661 CmdArgs.push_back("-debug-info-kind=standalone");
1662 break;
1663 case llvm::codegenoptions::UnusedTypeInfo:
1664 CmdArgs.push_back("-debug-info-kind=unused-types");
1665 break;
1666 default:
1667 break;
1668 }
1669}
1670
1671// Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
1672// to the corresponding DebugInfoKind.
1673llvm::codegenoptions::DebugInfoKind tools::debugLevelToInfoKind(const Arg &A) {
1674 assert(A.getOption().matches(options::OPT_gN_Group) &&
1675 "Not a -g option that specifies a debug-info level");
1676 if (A.getOption().matches(options::OPT_g0) ||
1677 A.getOption().matches(options::OPT_ggdb0))
1678 return llvm::codegenoptions::NoDebugInfo;
1679 if (A.getOption().matches(options::OPT_gline_tables_only) ||
1680 A.getOption().matches(options::OPT_ggdb1))
1681 return llvm::codegenoptions::DebugLineTablesOnly;
1682 if (A.getOption().matches(options::OPT_gline_directives_only))
1683 return llvm::codegenoptions::DebugDirectivesOnly;
1684 return llvm::codegenoptions::DebugInfoConstructor;
1685}
1686
1687static unsigned ParseDebugDefaultVersion(const ToolChain &TC,
1688 const ArgList &Args) {
1689 const Arg *A = Args.getLastArg(options::OPT_fdebug_default_version);
1690
1691 if (!A)
1692 return 0;
1693
1694 unsigned Value = 0;
1695 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 5 ||
1696 Value < 2)
1697 TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1698 << A->getAsString(Args) << A->getValue();
1699 return Value;
1700}
1701
1702unsigned tools::DwarfVersionNum(StringRef ArgValue) {
1703 return llvm::StringSwitch<unsigned>(ArgValue)
1704 .Case("-gdwarf-2", 2)
1705 .Case("-gdwarf-3", 3)
1706 .Case("-gdwarf-4", 4)
1707 .Case("-gdwarf-5", 5)
1708 .Default(0);
1709}
1710
1711const Arg *tools::getDwarfNArg(const ArgList &Args) {
1712 return Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
1713 options::OPT_gdwarf_4, options::OPT_gdwarf_5,
1714 options::OPT_gdwarf);
1715}
1716
1718 const llvm::opt::ArgList &Args) {
1719 unsigned DwarfVersion = ParseDebugDefaultVersion(TC, Args);
1720 if (const Arg *GDwarfN = getDwarfNArg(Args))
1721 if (int N = DwarfVersionNum(GDwarfN->getSpelling()))
1722 DwarfVersion = N;
1723 if (DwarfVersion == 0) {
1724 DwarfVersion = TC.GetDefaultDwarfVersion();
1725 assert(DwarfVersion && "toolchain default DWARF version must be nonzero");
1726 }
1727 return DwarfVersion;
1728}
1729
1730void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
1731 ArgStringList &CmdArgs) {
1732 llvm::Reloc::Model RelocationModel;
1733 unsigned PICLevel;
1734 bool IsPIE;
1735 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
1736
1737 if (RelocationModel != llvm::Reloc::Static)
1738 CmdArgs.push_back("-KPIC");
1739}
1740
1741/// Determine whether Objective-C automated reference counting is
1742/// enabled.
1743bool tools::isObjCAutoRefCount(const ArgList &Args) {
1744 return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
1745}
1746
1748
1749static LibGccType getLibGccType(const ToolChain &TC, const Driver &D,
1750 const ArgList &Args) {
1751 if (Args.hasArg(options::OPT_static_libgcc) ||
1752 Args.hasArg(options::OPT_static) || Args.hasArg(options::OPT_static_pie) ||
1753 // The Android NDK only provides libunwind.a, not libunwind.so.
1754 TC.getTriple().isAndroid())
1756 if (Args.hasArg(options::OPT_shared_libgcc))
1759}
1760
1761// Gcc adds libgcc arguments in various ways:
1762//
1763// gcc <none>: -lgcc --as-needed -lgcc_s --no-as-needed
1764// g++ <none>: -lgcc_s -lgcc
1765// gcc shared: -lgcc_s -lgcc
1766// g++ shared: -lgcc_s -lgcc
1767// gcc static: -lgcc -lgcc_eh
1768// g++ static: -lgcc -lgcc_eh
1769// gcc static-pie: -lgcc -lgcc_eh
1770// g++ static-pie: -lgcc -lgcc_eh
1771//
1772// Also, certain targets need additional adjustments.
1773
1774static void AddUnwindLibrary(const ToolChain &TC, const Driver &D,
1775 ArgStringList &CmdArgs, const ArgList &Args) {
1777 // By default OHOS binaries are linked statically to libunwind.
1778 if (TC.getTriple().isOHOSFamily() && UNW == ToolChain::UNW_CompilerRT) {
1779 CmdArgs.push_back("-l:libunwind.a");
1780 return;
1781 }
1782
1783 // Targets that don't use unwind libraries.
1784 if ((TC.getTriple().isAndroid() && UNW == ToolChain::UNW_Libgcc) ||
1785 TC.getTriple().isOSIAMCU() || TC.getTriple().isOSBinFormatWasm() ||
1786 TC.getTriple().isWindowsMSVCEnvironment() || UNW == ToolChain::UNW_None)
1787 return;
1788
1789 LibGccType LGT = getLibGccType(TC, D, Args);
1790 bool AsNeeded = LGT == LibGccType::UnspecifiedLibGcc &&
1791 (UNW == ToolChain::UNW_CompilerRT || !D.CCCIsCXX()) &&
1792 !TC.getTriple().isAndroid() &&
1793 !TC.getTriple().isOSCygMing() && !TC.getTriple().isOSAIX();
1794 if (AsNeeded)
1795 CmdArgs.push_back(getAsNeededOption(TC, true));
1796
1797 switch (UNW) {
1799 return;
1800 case ToolChain::UNW_Libgcc: {
1801 if (LGT == LibGccType::StaticLibGcc)
1802 CmdArgs.push_back("-lgcc_eh");
1803 else
1804 CmdArgs.push_back("-lgcc_s");
1805 break;
1806 }
1808 if (TC.getTriple().isOSAIX()) {
1809 // AIX only has libunwind as a shared library. So do not pass
1810 // anything in if -static is specified.
1811 if (LGT != LibGccType::StaticLibGcc)
1812 CmdArgs.push_back("-lunwind");
1813 } else if (LGT == LibGccType::StaticLibGcc) {
1814 CmdArgs.push_back("-l:libunwind.a");
1815 } else if (LGT == LibGccType::SharedLibGcc) {
1816 if (TC.getTriple().isOSCygMing())
1817 CmdArgs.push_back("-l:libunwind.dll.a");
1818 else
1819 CmdArgs.push_back("-l:libunwind.so");
1820 } else {
1821 // Let the linker choose between libunwind.so and libunwind.a
1822 // depending on what's available, and depending on the -static flag
1823 CmdArgs.push_back("-lunwind");
1824 }
1825 break;
1826 }
1827
1828 if (AsNeeded)
1829 CmdArgs.push_back(getAsNeededOption(TC, false));
1830}
1831
1832static void AddLibgcc(const ToolChain &TC, const Driver &D,
1833 ArgStringList &CmdArgs, const ArgList &Args) {
1834 LibGccType LGT = getLibGccType(TC, D, Args);
1835 if (LGT == LibGccType::StaticLibGcc ||
1836 (LGT == LibGccType::UnspecifiedLibGcc && !D.CCCIsCXX()))
1837 CmdArgs.push_back("-lgcc");
1838 AddUnwindLibrary(TC, D, CmdArgs, Args);
1839 if (LGT == LibGccType::SharedLibGcc ||
1841 CmdArgs.push_back("-lgcc");
1842}
1843
1844void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
1845 ArgStringList &CmdArgs, const ArgList &Args) {
1846 // Make use of compiler-rt if --rtlib option is used
1848
1849 switch (RLT) {
1851 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
1852 AddUnwindLibrary(TC, D, CmdArgs, Args);
1853 break;
1855 // Make sure libgcc is not used under MSVC environment by default
1856 if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1857 // Issue error diagnostic if libgcc is explicitly specified
1858 // through command line as --rtlib option argument.
1859 Arg *A = Args.getLastArg(options::OPT_rtlib_EQ);
1860 if (A && A->getValue() != StringRef("platform")) {
1861 TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
1862 << A->getValue() << "MSVC";
1863 }
1864 } else
1865 AddLibgcc(TC, D, CmdArgs, Args);
1866 break;
1867 }
1868
1869 // On Android, the unwinder uses dl_iterate_phdr (or one of
1870 // dl_unwind_find_exidx/__gnu_Unwind_Find_exidx on arm32) from libdl.so. For
1871 // statically-linked executables, these functions come from libc.a instead.
1872 if (TC.getTriple().isAndroid() && !Args.hasArg(options::OPT_static) &&
1873 !Args.hasArg(options::OPT_static_pie))
1874 CmdArgs.push_back("-ldl");
1875}
1876
1877SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,
1878 const InputInfo &Output,
1879 const InputInfo &Input,
1880 const Driver &D) {
1881 const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);
1882 if (!A && !D.CCPrintInternalStats)
1883 return {};
1884
1885 SmallString<128> StatsFile;
1886 if (A) {
1887 StringRef SaveStats = A->getValue();
1888 if (SaveStats == "obj" && Output.isFilename()) {
1889 StatsFile.assign(Output.getFilename());
1890 llvm::sys::path::remove_filename(StatsFile);
1891 } else if (SaveStats != "cwd") {
1892 D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
1893 return {};
1894 }
1895
1896 StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
1897 llvm::sys::path::append(StatsFile, BaseName);
1898 llvm::sys::path::replace_extension(StatsFile, "stats");
1899 } else {
1900 assert(D.CCPrintInternalStats);
1901 StatsFile.assign(D.CCPrintInternalStatReportFilename.empty()
1902 ? "-"
1904 }
1905 return StatsFile;
1906}
1907
1908void tools::addMultilibFlag(bool Enabled, const char *const Flag,
1909 Multilib::flags_list &Flags) {
1910 Flags.push_back(std::string(Enabled ? "+" : "-") + Flag);
1911}
1912
1913void tools::addX86AlignBranchArgs(const Driver &D, const ArgList &Args,
1914 ArgStringList &CmdArgs, bool IsLTO,
1915 const StringRef PluginOptPrefix) {
1916 auto addArg = [&, IsLTO](const Twine &Arg) {
1917 if (IsLTO) {
1918 assert(!PluginOptPrefix.empty() && "Cannot have empty PluginOptPrefix!");
1919 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + Arg));
1920 } else {
1921 CmdArgs.push_back("-mllvm");
1922 CmdArgs.push_back(Args.MakeArgString(Arg));
1923 }
1924 };
1925
1926 if (Args.hasArg(options::OPT_mbranches_within_32B_boundaries)) {
1927 addArg(Twine("-x86-branches-within-32B-boundaries"));
1928 }
1929 if (const Arg *A = Args.getLastArg(options::OPT_malign_branch_boundary_EQ)) {
1930 StringRef Value = A->getValue();
1931 unsigned Boundary;
1932 if (Value.getAsInteger(10, Boundary) || Boundary < 16 ||
1933 !llvm::isPowerOf2_64(Boundary)) {
1934 D.Diag(diag::err_drv_invalid_argument_to_option)
1935 << Value << A->getOption().getName();
1936 } else {
1937 addArg("-x86-align-branch-boundary=" + Twine(Boundary));
1938 }
1939 }
1940 if (const Arg *A = Args.getLastArg(options::OPT_malign_branch_EQ)) {
1941 std::string AlignBranch;
1942 for (StringRef T : A->getValues()) {
1943 if (T != "fused" && T != "jcc" && T != "jmp" && T != "call" &&
1944 T != "ret" && T != "indirect")
1945 D.Diag(diag::err_drv_invalid_malign_branch_EQ)
1946 << T << "fused, jcc, jmp, call, ret, indirect";
1947 if (!AlignBranch.empty())
1948 AlignBranch += '+';
1949 AlignBranch += T;
1950 }
1951 addArg("-x86-align-branch=" + Twine(AlignBranch));
1952 }
1953 if (const Arg *A = Args.getLastArg(options::OPT_mpad_max_prefix_size_EQ)) {
1954 StringRef Value = A->getValue();
1955 unsigned PrefixSize;
1956 if (Value.getAsInteger(10, PrefixSize)) {
1957 D.Diag(diag::err_drv_invalid_argument_to_option)
1958 << Value << A->getOption().getName();
1959 } else {
1960 addArg("-x86-pad-max-prefix-size=" + Twine(PrefixSize));
1961 }
1962 }
1963}
1964
1965/// SDLSearch: Search for Static Device Library
1966/// The search for SDL bitcode files is consistent with how static host
1967/// libraries are discovered. That is, the -l option triggers a search for
1968/// files in a set of directories called the LINKPATH. The host library search
1969/// procedure looks for a specific filename in the LINKPATH. The filename for
1970/// a host library is lib<libname>.a or lib<libname>.so. For SDLs, there is an
1971/// ordered-set of filenames that are searched. We call this ordered-set of
1972/// filenames as SEARCH-ORDER. Since an SDL can either be device-type specific,
1973/// architecture specific, or generic across all architectures, a naming
1974/// convention and search order is used where the file name embeds the
1975/// architecture name <arch-name> (nvptx or amdgcn) and the GPU device type
1976/// <device-name> such as sm_30 and gfx906. <device-name> is absent in case of
1977/// device-independent SDLs. To reduce congestion in host library directories,
1978/// the search first looks for files in the “libdevice” subdirectory. SDLs that
1979/// are bc files begin with the prefix “lib”.
1980///
1981/// Machine-code SDLs can also be managed as an archive (*.a file). The
1982/// convention has been to use the prefix “lib”. To avoid confusion with host
1983/// archive libraries, we use prefix "libbc-" for the bitcode SDL archives.
1984///
1985bool tools::SDLSearch(const Driver &D, const llvm::opt::ArgList &DriverArgs,
1986 llvm::opt::ArgStringList &CC1Args,
1987 SmallVector<std::string, 8> LibraryPaths, std::string Lib,
1988 StringRef Arch, StringRef Target, bool isBitCodeSDL,
1989 bool postClangLink) {
1991
1992 std::string LibDeviceLoc = "/libdevice";
1993 std::string LibBcPrefix = "/libbc-";
1994 std::string LibPrefix = "/lib";
1995
1996 if (isBitCodeSDL) {
1997 // SEARCH-ORDER for Bitcode SDLs:
1998 // libdevice/libbc-<libname>-<arch-name>-<device-type>.a
1999 // libbc-<libname>-<arch-name>-<device-type>.a
2000 // libdevice/libbc-<libname>-<arch-name>.a
2001 // libbc-<libname>-<arch-name>.a
2002 // libdevice/libbc-<libname>.a
2003 // libbc-<libname>.a
2004 // libdevice/lib<libname>-<arch-name>-<device-type>.bc
2005 // lib<libname>-<arch-name>-<device-type>.bc
2006 // libdevice/lib<libname>-<arch-name>.bc
2007 // lib<libname>-<arch-name>.bc
2008 // libdevice/lib<libname>.bc
2009 // lib<libname>.bc
2010
2011 for (StringRef Base : {LibBcPrefix, LibPrefix}) {
2012 const auto *Ext = Base.contains(LibBcPrefix) ? ".a" : ".bc";
2013
2014 for (auto Suffix : {Twine(Lib + "-" + Arch + "-" + Target).str(),
2015 Twine(Lib + "-" + Arch).str(), Twine(Lib).str()}) {
2016 SDLs.push_back(Twine(LibDeviceLoc + Base + Suffix + Ext).str());
2017 SDLs.push_back(Twine(Base + Suffix + Ext).str());
2018 }
2019 }
2020 } else {
2021 // SEARCH-ORDER for Machine-code SDLs:
2022 // libdevice/lib<libname>-<arch-name>-<device-type>.a
2023 // lib<libname>-<arch-name>-<device-type>.a
2024 // libdevice/lib<libname>-<arch-name>.a
2025 // lib<libname>-<arch-name>.a
2026
2027 const auto *Ext = ".a";
2028
2029 for (auto Suffix : {Twine(Lib + "-" + Arch + "-" + Target).str(),
2030 Twine(Lib + "-" + Arch).str()}) {
2031 SDLs.push_back(Twine(LibDeviceLoc + LibPrefix + Suffix + Ext).str());
2032 SDLs.push_back(Twine(LibPrefix + Suffix + Ext).str());
2033 }
2034 }
2035
2036 // The CUDA toolchain does not use a global device llvm-link before the LLVM
2037 // backend generates ptx. So currently, the use of bitcode SDL for nvptx is
2038 // only possible with post-clang-cc1 linking. Clang cc1 has a feature that
2039 // will link libraries after clang compilation while the LLVM IR is still in
2040 // memory. This utilizes a clang cc1 option called “-mlink-builtin-bitcode”.
2041 // This is a clang -cc1 option that is generated by the clang driver. The
2042 // option value must a full path to an existing file.
2043 bool FoundSDL = false;
2044 for (auto LPath : LibraryPaths) {
2045 for (auto SDL : SDLs) {
2046 auto FullName = Twine(LPath + SDL).str();
2047 if (llvm::sys::fs::exists(FullName)) {
2048 if (postClangLink)
2049 CC1Args.push_back("-mlink-builtin-bitcode");
2050 CC1Args.push_back(DriverArgs.MakeArgString(FullName));
2051 FoundSDL = true;
2052 break;
2053 }
2054 }
2055 if (FoundSDL)
2056 break;
2057 }
2058 return FoundSDL;
2059}
2060
2061/// Search if a user provided archive file lib<libname>.a exists in any of
2062/// the library paths. If so, add a new command to clang-offload-bundler to
2063/// unbundle this archive and create a temporary device specific archive. Name
2064/// of this SDL is passed to the llvm-link tool.
2066 Compilation &C, const Driver &D, const Tool &T, const JobAction &JA,
2067 const InputInfoList &Inputs, const llvm::opt::ArgList &DriverArgs,
2068 llvm::opt::ArgStringList &CC1Args, SmallVector<std::string, 8> LibraryPaths,
2069 StringRef Lib, StringRef Arch, StringRef Target, bool isBitCodeSDL,
2070 bool postClangLink) {
2071
2072 // We don't support bitcode archive bundles for nvptx
2073 if (isBitCodeSDL && Arch.contains("nvptx"))
2074 return false;
2075
2076 bool FoundAOB = false;
2077 std::string ArchiveOfBundles;
2078
2079 llvm::Triple Triple(D.getTargetTriple());
2080 bool IsMSVC = Triple.isWindowsMSVCEnvironment();
2081 auto Ext = IsMSVC ? ".lib" : ".a";
2082 if (!Lib.startswith(":") && !Lib.startswith("-l")) {
2083 if (llvm::sys::fs::exists(Lib)) {
2084 ArchiveOfBundles = Lib;
2085 FoundAOB = true;
2086 }
2087 } else {
2088 if (Lib.startswith("-l"))
2089 Lib = Lib.drop_front(2);
2090 for (auto LPath : LibraryPaths) {
2091 ArchiveOfBundles.clear();
2092 SmallVector<std::string, 2> AOBFileNames;
2093 auto LibFile =
2094 (Lib.startswith(":") ? Lib.drop_front()
2095 : IsMSVC ? Lib + Ext : "lib" + Lib + Ext)
2096 .str();
2097 for (auto Prefix : {"/libdevice/", "/"}) {
2098 auto AOB = Twine(LPath + Prefix + LibFile).str();
2099 if (llvm::sys::fs::exists(AOB)) {
2100 ArchiveOfBundles = AOB;
2101 FoundAOB = true;
2102 break;
2103 }
2104 }
2105 if (FoundAOB)
2106 break;
2107 }
2108 }
2109
2110 if (!FoundAOB)
2111 return false;
2112
2113 llvm::file_magic Magic;
2114 auto EC = llvm::identify_magic(ArchiveOfBundles, Magic);
2115 if (EC || Magic != llvm::file_magic::archive)
2116 return false;
2117
2118 StringRef Prefix = isBitCodeSDL ? "libbc-" : "lib";
2119 std::string OutputLib =
2120 D.GetTemporaryPath(Twine(Prefix + llvm::sys::path::filename(Lib) + "-" +
2121 Arch + "-" + Target)
2122 .str(),
2123 "a");
2124
2125 C.addTempFile(C.getArgs().MakeArgString(OutputLib));
2126
2127 ArgStringList CmdArgs;
2128 SmallString<128> DeviceTriple;
2130 DeviceTriple += '-';
2131 std::string NormalizedTriple = T.getToolChain().getTriple().normalize();
2132 DeviceTriple += NormalizedTriple;
2133 if (!Target.empty()) {
2134 DeviceTriple += '-';
2135 DeviceTriple += Target;
2136 }
2137
2138 std::string UnbundleArg("-unbundle");
2139 std::string TypeArg("-type=a");
2140 std::string InputArg("-input=" + ArchiveOfBundles);
2141 std::string OffloadArg("-targets=" + std::string(DeviceTriple));
2142 std::string OutputArg("-output=" + OutputLib);
2143
2144 const char *UBProgram = DriverArgs.MakeArgString(
2145 T.getToolChain().GetProgramPath("clang-offload-bundler"));
2146
2147 ArgStringList UBArgs;
2148 UBArgs.push_back(C.getArgs().MakeArgString(UnbundleArg));
2149 UBArgs.push_back(C.getArgs().MakeArgString(TypeArg));
2150 UBArgs.push_back(C.getArgs().MakeArgString(InputArg));
2151 UBArgs.push_back(C.getArgs().MakeArgString(OffloadArg));
2152 UBArgs.push_back(C.getArgs().MakeArgString(OutputArg));
2153
2154 // Add this flag to not exit from clang-offload-bundler if no compatible
2155 // code object is found in heterogenous archive library.
2156 std::string AdditionalArgs("-allow-missing-bundles");
2157 UBArgs.push_back(C.getArgs().MakeArgString(AdditionalArgs));
2158
2159 // Add this flag to treat hip and hipv4 offload kinds as compatible with
2160 // openmp offload kind while extracting code objects from a heterogenous
2161 // archive library. Vice versa is also considered compatible.
2162 std::string HipCompatibleArgs("-hip-openmp-compatible");
2163 UBArgs.push_back(C.getArgs().MakeArgString(HipCompatibleArgs));
2164
2165 C.addCommand(std::make_unique<Command>(
2166 JA, T, ResponseFileSupport::AtFileCurCP(), UBProgram, UBArgs, Inputs,
2167 InputInfo(&JA, C.getArgs().MakeArgString(OutputLib))));
2168 if (postClangLink)
2169 CC1Args.push_back("-mlink-builtin-bitcode");
2170
2171 CC1Args.push_back(DriverArgs.MakeArgString(OutputLib));
2172
2173 return true;
2174}
2175
2176// Wrapper function used by driver for adding SDLs during link phase.
2178 const JobAction &JA,
2179 const InputInfoList &Inputs,
2180 const llvm::opt::ArgList &DriverArgs,
2181 llvm::opt::ArgStringList &CC1Args,
2182 StringRef Arch, StringRef Target,
2183 bool isBitCodeSDL, bool postClangLink) {
2184 AddStaticDeviceLibs(&C, &T, &JA, &Inputs, C.getDriver(), DriverArgs, CC1Args,
2185 Arch, Target, isBitCodeSDL, postClangLink);
2186}
2187
2188// User defined Static Device Libraries(SDLs) can be passed to clang for
2189// offloading GPU compilers. Like static host libraries, the use of a SDL is
2190// specified with the -l command line option. The primary difference between
2191// host and SDLs is the filenames for SDLs (refer SEARCH-ORDER for Bitcode SDLs
2192// and SEARCH-ORDER for Machine-code SDLs for the naming convention).
2193// SDLs are of following types:
2194//
2195// * Bitcode SDLs: They can either be a *.bc file or an archive of *.bc files.
2196// For NVPTX, these libraries are post-clang linked following each
2197// compilation. For AMDGPU, these libraries are linked one time
2198// during the application link phase.
2199//
2200// * Machine-code SDLs: They are archive files. For AMDGPU, the process for
2201// machine code SDLs is still in development. But they will be linked
2202// by the LLVM tool lld.
2203//
2204// * Bundled objects that contain both host and device codes: Bundled objects
2205// may also contain library code compiled from source. For NVPTX, the
2206// bundle contains cubin. For AMDGPU, the bundle contains bitcode.
2207//
2208// For Bitcode and Machine-code SDLs, current compiler toolchains hardcode the
2209// inclusion of specific SDLs such as math libraries and the OpenMP device
2210// library libomptarget.
2212 const JobAction *JA,
2213 const InputInfoList *Inputs, const Driver &D,
2214 const llvm::opt::ArgList &DriverArgs,
2215 llvm::opt::ArgStringList &CC1Args,
2216 StringRef Arch, StringRef Target,
2217 bool isBitCodeSDL, bool postClangLink) {
2218
2219 SmallVector<std::string, 8> LibraryPaths;
2220 // Add search directories from LIBRARY_PATH env variable
2221 std::optional<std::string> LibPath =
2222 llvm::sys::Process::GetEnv("LIBRARY_PATH");
2223 if (LibPath) {
2225 const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};
2226 llvm::SplitString(*LibPath, Frags, EnvPathSeparatorStr);
2227 for (StringRef Path : Frags)
2228 LibraryPaths.emplace_back(Path.trim());
2229 }
2230
2231 // Add directories from user-specified -L options
2232 for (std::string Search_Dir : DriverArgs.getAllArgValues(options::OPT_L))
2233 LibraryPaths.emplace_back(Search_Dir);
2234
2235 // Add path to lib-debug folders
2236 SmallString<256> DefaultLibPath = llvm::sys::path::parent_path(D.Dir);
2237 llvm::sys::path::append(DefaultLibPath, CLANG_INSTALL_LIBDIR_BASENAME);
2238 LibraryPaths.emplace_back(DefaultLibPath.c_str());
2239
2240 // Build list of Static Device Libraries SDLs specified by -l option
2241 llvm::SmallSet<std::string, 16> SDLNames;
2242 static const StringRef HostOnlyArchives[] = {
2243 "omp", "cudart", "m", "gcc", "gcc_s", "pthread", "hip_hcc"};
2244 for (auto SDLName : DriverArgs.getAllArgValues(options::OPT_l)) {
2245 if (!HostOnlyArchives->contains(SDLName)) {
2246 SDLNames.insert(std::string("-l") + SDLName);
2247 }
2248 }
2249
2250 for (auto Input : DriverArgs.getAllArgValues(options::OPT_INPUT)) {
2251 auto FileName = StringRef(Input);
2252 // Clang treats any unknown file types as archives and passes them to the
2253 // linker. Files with extension 'lib' are classified as TY_Object by clang
2254 // but they are usually archives. It is OK if the file is not really an
2255 // archive since GetSDLFromOffloadArchive will check the magic of the file
2256 // and only unbundle it if it is really an archive.
2257 const StringRef LibFileExt = ".lib";
2258 if (!llvm::sys::path::has_extension(FileName) ||
2260 llvm::sys::path::extension(FileName).drop_front()) ==
2262 llvm::sys::path::extension(FileName) == LibFileExt)
2263 SDLNames.insert(Input);
2264 }
2265
2266 // The search stops as soon as an SDL file is found. The driver then provides
2267 // the full filename of the SDL to the llvm-link command. If no SDL is found
2268 // after searching each LINKPATH with SEARCH-ORDER, it is possible that an
2269 // archive file lib<libname>.a exists and may contain bundled object files.
2270 for (auto SDLName : SDLNames) {
2271 // This is the only call to SDLSearch
2272 if (!SDLSearch(D, DriverArgs, CC1Args, LibraryPaths, SDLName, Arch, Target,
2273 isBitCodeSDL, postClangLink)) {
2274 GetSDLFromOffloadArchive(*C, D, *T, *JA, *Inputs, DriverArgs, CC1Args,
2275 LibraryPaths, SDLName, Arch, Target,
2276 isBitCodeSDL, postClangLink);
2277 }
2278 }
2279}
2280
2281static llvm::opt::Arg *
2282getAMDGPUCodeObjectArgument(const Driver &D, const llvm::opt::ArgList &Args) {
2283 return Args.getLastArg(options::OPT_mcode_object_version_EQ);
2284}
2285
2287 const llvm::opt::ArgList &Args) {
2288 const unsigned MinCodeObjVer = 2;
2289 const unsigned MaxCodeObjVer = 5;
2290
2291 if (auto *CodeObjArg = getAMDGPUCodeObjectArgument(D, Args)) {
2292 if (CodeObjArg->getOption().getID() ==
2293 options::OPT_mcode_object_version_EQ) {
2294 unsigned CodeObjVer = MaxCodeObjVer;
2295 auto Remnant =
2296 StringRef(CodeObjArg->getValue()).getAsInteger(0, CodeObjVer);
2297 if (Remnant || CodeObjVer < MinCodeObjVer || CodeObjVer > MaxCodeObjVer)
2298 D.Diag(diag::err_drv_invalid_int_value)
2299 << CodeObjArg->getAsString(Args) << CodeObjArg->getValue();
2300 }
2301 }
2302}
2303
2305 const llvm::opt::ArgList &Args) {
2306 unsigned CodeObjVer = 4; // default
2307 if (auto *CodeObjArg = getAMDGPUCodeObjectArgument(D, Args))
2308 StringRef(CodeObjArg->getValue()).getAsInteger(0, CodeObjVer);
2309 return CodeObjVer;
2310}
2311
2313 const Driver &D, const llvm::opt::ArgList &Args) {
2314 return getAMDGPUCodeObjectArgument(D, Args) != nullptr;
2315}
2316
2318 const llvm::opt::ArgList &Args,
2319 llvm::opt::ArgStringList &CmdArgs,
2320 const llvm::Triple &Triple, bool IsLTO,
2321 const StringRef PluginOptPrefix) {
2322 auto addArg = [&, IsLTO](const Twine &Arg) {
2323 if (IsLTO) {
2324 assert(!PluginOptPrefix.empty() && "Cannot have empty PluginOptPrefix!");
2325 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + Arg));
2326 } else {
2327 CmdArgs.push_back("-mllvm");
2328 CmdArgs.push_back(Args.MakeArgString(Arg));
2329 }
2330 };
2331
2332 if (Arg *A = Args.getLastArg(options::OPT_moutline,
2333 options::OPT_mno_outline)) {
2334 if (A->getOption().matches(options::OPT_moutline)) {
2335 // We only support -moutline in AArch64 and ARM targets right now. If
2336 // we're not compiling for these, emit a warning and ignore the flag.
2337 // Otherwise, add the proper mllvm flags.
2338 if (!(Triple.isARM() || Triple.isThumb() ||
2339 Triple.getArch() == llvm::Triple::aarch64 ||
2340 Triple.getArch() == llvm::Triple::aarch64_32)) {
2341 D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();
2342 } else {
2343 addArg(Twine("-enable-machine-outliner"));
2344 }
2345 } else {
2346 // Disable all outlining behaviour.
2347 addArg(Twine("-enable-machine-outliner=never"));
2348 }
2349 }
2350}
2351
2353 const llvm::opt::ArgList &DriverArgs,
2354 llvm::opt::ArgStringList &CC1Args,
2355 StringRef BitcodeSuffix,
2356 const llvm::Triple &Triple) {
2357 SmallVector<StringRef, 8> LibraryPaths;
2358
2359 // Add path to clang lib / lib64 folder.
2360 SmallString<256> DefaultLibPath = llvm::sys::path::parent_path(D.Dir);
2361 llvm::sys::path::append(DefaultLibPath, CLANG_INSTALL_LIBDIR_BASENAME);
2362 LibraryPaths.emplace_back(DefaultLibPath.c_str());
2363
2364 // Add user defined library paths from LIBRARY_PATH.
2365 std::optional<std::string> LibPath =
2366 llvm::sys::Process::GetEnv("LIBRARY_PATH");
2367 if (LibPath) {
2369 const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};
2370 llvm::SplitString(*LibPath, Frags, EnvPathSeparatorStr);
2371 for (StringRef Path : Frags)
2372 LibraryPaths.emplace_back(Path.trim());
2373 }
2374
2375 OptSpecifier LibomptargetBCPathOpt =
2376 Triple.isAMDGCN() ? options::OPT_libomptarget_amdgpu_bc_path_EQ
2377 : options::OPT_libomptarget_nvptx_bc_path_EQ;
2378
2379 StringRef ArchPrefix = Triple.isAMDGCN() ? "amdgpu" : "nvptx";
2380 std::string LibOmpTargetName =
2381 ("libomptarget-" + ArchPrefix + "-" + BitcodeSuffix + ".bc").str();
2382
2383 // First check whether user specifies bc library
2384 if (const Arg *A = DriverArgs.getLastArg(LibomptargetBCPathOpt)) {
2385 SmallString<128> LibOmpTargetFile(A->getValue());
2386 if (llvm::sys::fs::exists(LibOmpTargetFile) &&
2387 llvm::sys::fs::is_directory(LibOmpTargetFile)) {
2388 llvm::sys::path::append(LibOmpTargetFile, LibOmpTargetName);
2389 }
2390
2391 if (llvm::sys::fs::exists(LibOmpTargetFile)) {
2392 CC1Args.push_back("-mlink-builtin-bitcode");
2393 CC1Args.push_back(DriverArgs.MakeArgString(LibOmpTargetFile));
2394 } else {
2395 D.Diag(diag::err_drv_omp_offload_target_bcruntime_not_found)
2396 << LibOmpTargetFile;
2397 }
2398 } else {
2399 bool FoundBCLibrary = false;
2400
2401 for (StringRef LibraryPath : LibraryPaths) {
2402 SmallString<128> LibOmpTargetFile(LibraryPath);
2403 llvm::sys::path::append(LibOmpTargetFile, LibOmpTargetName);
2404 if (llvm::sys::fs::exists(LibOmpTargetFile)) {
2405 CC1Args.push_back("-mlink-builtin-bitcode");
2406 CC1Args.push_back(DriverArgs.MakeArgString(LibOmpTargetFile));
2407 FoundBCLibrary = true;
2408 break;
2409 }
2410 }
2411
2412 if (!FoundBCLibrary)
2413 D.Diag(diag::err_drv_omp_offload_target_missingbcruntime)
2414 << LibOmpTargetName << ArchPrefix;
2415 }
2416}
2418 const llvm::opt::ArgList &Args,
2419 llvm::opt::ArgStringList &CmdArgs) {
2420 if (Args.hasArg(options::OPT_hip_link) &&
2421 !Args.hasArg(options::OPT_nostdlib) &&
2422 !Args.hasArg(options::OPT_no_hip_rt)) {
2423 TC.AddHIPRuntimeLibArgs(Args, CmdArgs);
2424 } else {
2425 // Claim "no HIP libraries" arguments if any
2426 for (auto *Arg : Args.filtered(options::OPT_no_hip_rt)) {
2427 Arg->claim();
2428 }
2429 }
2430}
#define V(N, I)
Definition: ASTContext.h:3230
static unsigned ParseDebugDefaultVersion(const ToolChain &TC, const ArgList &Args)
static void getWebAssemblyTargetFeatures(const Driver &D, const llvm::Triple &Triple, const ArgList &Args, std::vector< StringRef > &Features)
Definition: CommonArgs.cpp:482
LibGccType
static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Sanitizer)
Definition: CommonArgs.cpp:974
static llvm::opt::Arg * getAMDGPUCodeObjectArgument(const Driver &D, const llvm::opt::ArgList &Args)
static void collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args, SmallVectorImpl< StringRef > &SharedRuntimes, SmallVectorImpl< StringRef > &StaticRuntimes, SmallVectorImpl< StringRef > &NonWholeStaticRuntimes, SmallVectorImpl< StringRef > &HelperStaticRuntimes, SmallVectorImpl< StringRef > &RequiredSymbols)
static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, StringRef Sanitizer, bool IsShared, bool IsWhole)
Definition: CommonArgs.cpp:957
static void AddUnwindLibrary(const ToolChain &TC, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
static void renderRpassOptions(const ArgList &Args, ArgStringList &CmdArgs, const StringRef PluginOptPrefix)
Definition: CommonArgs.cpp:73
static StringRef getWebAssemblyTargetCPU(const ArgList &Args)
Get the (LLVM) name of the WebAssembly cpu we are targeting.
Definition: CommonArgs.cpp:366
static void renderRemarksHotnessOptions(const ArgList &Args, ArgStringList &CmdArgs, const StringRef PluginOptPrefix)
Definition: CommonArgs.cpp:119
static std::string getLanaiTargetCPU(const ArgList &Args)
Definition: CommonArgs.cpp:358
static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs, const llvm::Triple &Triple, const InputInfo &Input, const InputInfo &Output, const StringRef PluginOptPrefix)
Definition: CommonArgs.cpp:88
static void AddLibgcc(const ToolChain &TC, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args)
static LibGccType getLibGccType(const ToolChain &TC, const Driver &D, const ArgList &Args)
static std::string getAMDGPUTargetGPU(const llvm::Triple &T, const ArgList &Args)
Get the (LLVM) name of the AMDGPU gpu we are targeting.
Definition: CommonArgs.cpp:338
static bool shouldIgnoreUnsupportedTargetFeature(const Arg &TargetFeatureArg, llvm::Triple T, StringRef Processor)
Definition: CommonArgs.cpp:134
Defines the clang::LangOptions interface.
Defines types useful for describing an Objective-C runtime.
Defines version macros and version-related utility functions for Clang.
DiagnosticBuilder Report(SourceLocation Loc, unsigned DiagID)
Issue the message to the client.
Definition: Diagnostic.h:1542
const char * getOffloadingArch() const
Definition: Action.h:211
static StringRef GetOffloadKindName(OffloadKind Kind)
Return a string containing a offload kind name.
Definition: Action.cpp:156
OffloadKind getOffloadingDeviceKind() const
Definition: Action.h:210
bool isHostOffloading(unsigned int OKind) const
Check if this action have any offload kinds.
Definition: Action.h:218
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:77
std::string CCPrintInternalStatReportFilename
The file to log CC_PRINT_INTERNAL_STAT_FILE output to, if enabled.
Definition: Driver.h:198
DiagnosticsEngine & getDiags() const
Definition: Driver.h:390
OpenMPRuntimeKind getOpenMPRuntime(const llvm::opt::ArgList &Args) const
Compute the desired OpenMP runtime from the flags provided.
Definition: Driver.cpp:749
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:144
unsigned CCPrintInternalStats
Set CC_PRINT_INTERNAL_STAT mode, which causes the driver to dump internal performance report to CC_PR...
Definition: Driver.h:266
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:392
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:6027
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:155
@ OMPRT_IOMP5
The legacy name for the LLVM OpenMP runtime from when it was the Intel OpenMP runtime.
Definition: Driver.h:140
@ OMPRT_OMP
The LLVM OpenMP runtime.
Definition: Driver.h:130
@ OMPRT_Unknown
An unknown OpenMP runtime.
Definition: Driver.h:126
@ OMPRT_GOMP
The GNU OpenMP runtime.
Definition: Driver.h:135
std::string getTargetTriple() const
Definition: Driver.h:409
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:216
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
const char * getBaseInput() const
Definition: InputInfo.h:78
const char * getFilename() const
Definition: InputInfo.h:83
bool isFilename() const
Definition: InputInfo.h:75
std::vector< std::string > flags_list
Definition: Multilib.h:32
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:98
const std::string & getMemtagMode() const
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:91
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:1113
virtual void AddHIPRuntimeLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Add the system specific linker arguments to use for the given HIP runtime library type.
Definition: ToolChain.h:743
virtual unsigned GetDefaultDwarfVersion() const
Definition: ToolChain.h:550
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:891
const char * getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:567
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:252
const Driver & getDriver() const
Definition: ToolChain.h:236
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:128
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:181
virtual bool isPIEDefault(const llvm::opt::ArgList &Args) const =0
Test whether this toolchain defaults to PIE.
virtual bool isPICDefaultForced() const =0
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
const llvm::Triple & getEffectiveTriple() const
Get the toolchain's effective clang triple.
Definition: ToolChain.h:266
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:1087
const llvm::Triple & getTriple() const
Definition: ToolChain.h:238
virtual bool HasNativeLLVMSupport() const
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: ToolChain.cpp:769
virtual UnwindLibType GetUnwindLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:917
std::string GetLinkerPath(bool *LinkerIsLLD=nullptr) const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name.
Definition: ToolChain.cpp:678
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static) const
Definition: ToolChain.cpp:546
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:674
std::string getTripleString() const
Definition: ToolChain.h:261
SanitizerArgs getSanitizerArgs(const llvm::opt::ArgList &JobArgs) const
Definition: ToolChain.cpp:175
virtual path_list getArchSpecificLibPaths() const
Definition: ToolChain.cpp:625
virtual bool isCrossCompiling() const
Returns true if the toolchain is targeting a non-native architecture.
Definition: ToolChain.cpp:773
virtual bool isPICDefault() const =0
Test whether this toolchain defaults to PIC.
Tool - Information on a specific compilation tool.
Definition: Tool.h:32
const ToolChain & getToolChain() const
Definition: Tool.h:52
bool needsXRayRt() const
Definition: XRayArgs.h:44
llvm::ArrayRef< std::string > modeList() const
Definition: XRayArgs.h:45
static StringRef GetTargetCPUVersion(const llvm::opt::ArgList &Args)
Definition: Hexagon.cpp:791
void getNVPTXTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
Definition: Cuda.cpp:655
void getAArch64TargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features, bool ForAS)
std::string getAArch64TargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, llvm::opt::Arg *&A)
void getAMDGPUTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
Definition: AMDGPU.cpp:555
void getARMArchCPUFromArgs(const llvm::opt::ArgList &Args, llvm::StringRef &Arch, llvm::StringRef &CPU, bool FromAs=false)
void getARMTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features, bool ForAS)
std::string getARMTargetCPU(StringRef CPU, llvm::StringRef Arch, const llvm::Triple &Triple)
void getCSKYTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, std::vector< llvm::StringRef > &Features)
void getHexagonTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
void getLoongArchTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
void getM68kTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
std::string getM68kTargetCPU(const llvm::opt::ArgList &Args)
void getMIPSTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features)
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
void getMSP430TargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
std::string getPPCTargetCPU(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &T)
void getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
std::string getRISCVTargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
Definition: RISCV.cpp:317
void getRISCVTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
void getSparcTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
std::string getSparcTargetCPU(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
void getSystemZTargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
std::string getSystemZTargetCPU(const llvm::opt::ArgList &Args)
void getVETargetFeatures(const Driver &D, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
std::string getX86TargetCPU(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
void getX86TargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
void addX86AlignBranchArgs(const Driver &D, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, bool IsLTO, const StringRef PluginOptPrefix="")
void addMachineOutlinerArgs(const Driver &D, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const llvm::Triple &Triple, bool IsLTO, const StringRef PluginOptPrefix="")
unsigned ParseFunctionAlignment(const ToolChain &TC, const llvm::opt::ArgList &Args)
void addOpenMPDeviceRTL(const Driver &D, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, StringRef BitcodeSuffix, const llvm::Triple &Triple)
void handleTargetFeaturesGroup(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier Group)
Iterate Args and convert -mxxx to +xxx and -mno-xxx to -xxx and append it to Features.
SmallVector< StringRef > unifyTargetFeatures(ArrayRef< StringRef > Features)
If there are multiple +xxx or -xxx features, keep the last one.
Definition: CommonArgs.cpp:189
llvm::opt::Arg * getLastProfileSampleUseArg(const llvm::opt::ArgList &Args)
bool GetSDLFromOffloadArchive(Compilation &C, const Driver &D, const Tool &T, const JobAction &JA, const InputInfoList &Inputs, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, SmallVector< std::string, 8 > LibraryPaths, StringRef Lib, StringRef Arch, StringRef Target, bool isBitCodeSDL, bool postClangLink)
Search if a user provided archive file lib<libname>.a exists in any of the library paths.
void AddStaticDeviceLibsLinking(Compilation &C, const Tool &T, const JobAction &JA, const InputInfoList &Inputs, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CmdArgs, StringRef Arch, StringRef Target, bool isBitCodeSDL, bool postClangLink)
const char * SplitDebugName(const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Input, const InputInfo &Output)
void checkAMDGPUCodeObjectVersion(const Driver &D, const llvm::opt::ArgList &Args)
void getTargetFeatures(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, bool ForAS, bool IsAux=false)
const char * getAsNeededOption(const ToolChain &TC, bool as_needed)
Definition: CommonArgs.cpp:989
std::string getCPUName(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
void linkXRayRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
bool isUseSeparateSections(const llvm::Triple &Triple)
Definition: CommonArgs.cpp:586
void AddRunTimeLibs(const ToolChain &TC, const Driver &D, llvm::opt::ArgStringList &CmdArgs, const llvm::opt::ArgList &Args)
void SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T, const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Output, const char *OutFile)
void addHIPRuntimeLibArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
void addDirectoryList(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const char *ArgName, const char *EnvVar)
EnvVar is split by system delimiter for environment variables.
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool areOptimizationsEnabled(const llvm::opt::ArgList &Args)
void addOpenMPRuntimeLibraryPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool addXRayRuntime(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool haveAMDGPUCodeObjectVersionArgument(const Driver &D, const llvm::opt::ArgList &Args)
void addFortranRuntimeLibs(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
Adds Fortran runtime libraries to CmdArgs.
Definition: CommonArgs.cpp:922
void addDebugInfoKind(llvm::opt::ArgStringList &CmdArgs, llvm::codegenoptions::DebugInfoKind DebugInfoKind)
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:149
llvm::codegenoptions::DebugInfoKind debugLevelToInfoKind(const llvm::opt::Arg &A)
llvm::opt::Arg * getLastCSProfileGenerateArg(const llvm::opt::ArgList &Args)
void AddStaticDeviceLibs(Compilation *C, const Tool *T, const JobAction *JA, const InputInfoList *Inputs, const Driver &D, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CmdArgs, StringRef Arch, StringRef Target, bool isBitCodeSDL, bool postClangLink)
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
void addMultilibFlag(bool Enabled, const char *const Flag, Multilib::flags_list &Flags)
Flag must be a flag accepted by the driver with its leading '-' removed,
void addFortranRuntimeLibraryPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
Adds the path for the Fortran runtime libraries to CmdArgs.
llvm::StringRef getLTOParallelism(const llvm::opt::ArgList &Args, const Driver &D)
void addLinkerCompressDebugSectionsOption(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
Definition: CommonArgs.cpp:307
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.
void addLTOOptions(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfo &Input, bool IsThinLTO)
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
unsigned DwarfVersionNum(StringRef ArgValue)
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
unsigned getDwarfVersion(const ToolChain &TC, const llvm::opt::ArgList &Args)
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
unsigned getAMDGPUCodeObjectVersion(const Driver &D, const llvm::opt::ArgList &Args)
const llvm::opt::Arg * getDwarfNArg(const llvm::opt::ArgList &Args)
void AddTargetFeature(const llvm::opt::ArgList &Args, std::vector< StringRef > &Features, llvm::opt::OptSpecifier OnOpt, llvm::opt::OptSpecifier OffOpt, StringRef FeatureName)
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.
void addArchSpecificRPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
const char * RelocationModelName(llvm::Reloc::Model Model)
bool SDLSearch(const Driver &D, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CmdArgs, SmallVector< std::string, 8 > LibraryPaths, std::string Lib, StringRef Arch, StringRef Target, bool isBitCodeSDL, bool postClangLink)
SDLSearch: Search for Static Device Library The search for SDL bitcode files is consistent with how s...
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:252
ID lookupTypeForExtension(llvm::StringRef Ext)
lookupTypeForExtension - Lookup the type to use for the file extension Ext.
Definition: Types.cpp:295
bool willEmitRemarks(const llvm::opt::ArgList &Args)
llvm::StringRef getProcessorFromTargetID(const llvm::Triple &T, llvm::StringRef OffloadArch)
Get processor name from target ID.
Definition: TargetID.cpp:54
@ C
Languages that the frontend can parse and compile.
static constexpr ResponseFileSupport AtFileCurCP()
Definition: Job.h:92