1 //===--- CommonArgs.cpp - Args handling for multiple toolchains -*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "CommonArgs.h"
10 #include "Arch/AArch64.h"
11 #include "Arch/ARM.h"
12 #include "Arch/Mips.h"
13 #include "Arch/PPC.h"
14 #include "Arch/SystemZ.h"
15 #include "Arch/VE.h"
16 #include "Arch/X86.h"
17 #include "HIP.h"
18 #include "Hexagon.h"
19 #include "InputInfo.h"
20 #include "clang/Basic/CharInfo.h"
21 #include "clang/Basic/LangOptions.h"
22 #include "clang/Basic/ObjCRuntime.h"
23 #include "clang/Basic/Version.h"
24 #include "clang/Config/config.h"
25 #include "clang/Driver/Action.h"
26 #include "clang/Driver/Compilation.h"
27 #include "clang/Driver/Driver.h"
28 #include "clang/Driver/DriverDiagnostic.h"
29 #include "clang/Driver/Job.h"
30 #include "clang/Driver/Options.h"
31 #include "clang/Driver/SanitizerArgs.h"
32 #include "clang/Driver/ToolChain.h"
33 #include "clang/Driver/Util.h"
34 #include "clang/Driver/XRayArgs.h"
35 #include "llvm/ADT/STLExtras.h"
36 #include "llvm/ADT/SmallString.h"
37 #include "llvm/ADT/StringExtras.h"
38 #include "llvm/ADT/StringSwitch.h"
39 #include "llvm/ADT/Twine.h"
40 #include "llvm/Config/llvm-config.h"
41 #include "llvm/Option/Arg.h"
42 #include "llvm/Option/ArgList.h"
43 #include "llvm/Option/Option.h"
44 #include "llvm/Support/CodeGen.h"
45 #include "llvm/Support/Compression.h"
46 #include "llvm/Support/Debug.h"
47 #include "llvm/Support/ErrorHandling.h"
48 #include "llvm/Support/FileSystem.h"
49 #include "llvm/Support/Host.h"
50 #include "llvm/Support/Path.h"
51 #include "llvm/Support/Process.h"
52 #include "llvm/Support/Program.h"
53 #include "llvm/Support/ScopedPrinter.h"
54 #include "llvm/Support/TargetParser.h"
55 #include "llvm/Support/Threading.h"
56 #include "llvm/Support/VirtualFileSystem.h"
57 #include "llvm/Support/YAMLParser.h"
58
59 using namespace clang::driver;
60 using namespace clang::driver::tools;
61 using namespace clang;
62 using namespace llvm::opt;
63
renderRpassOptions(const ArgList & Args,ArgStringList & CmdArgs)64 static void renderRpassOptions(const ArgList &Args, ArgStringList &CmdArgs) {
65 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_EQ))
66 CmdArgs.push_back(Args.MakeArgString(Twine("--plugin-opt=-pass-remarks=") +
67 A->getValue()));
68
69 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_missed_EQ))
70 CmdArgs.push_back(Args.MakeArgString(
71 Twine("--plugin-opt=-pass-remarks-missed=") + A->getValue()));
72
73 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_analysis_EQ))
74 CmdArgs.push_back(Args.MakeArgString(
75 Twine("--plugin-opt=-pass-remarks-analysis=") + A->getValue()));
76 }
77
renderRemarksOptions(const ArgList & Args,ArgStringList & CmdArgs,const llvm::Triple & Triple,const InputInfo & Input,const InputInfo & Output)78 static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,
79 const llvm::Triple &Triple,
80 const InputInfo &Input,
81 const InputInfo &Output) {
82 StringRef Format = "yaml";
83 if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
84 Format = A->getValue();
85
86 SmallString<128> F;
87 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
88 if (A)
89 F = A->getValue();
90 else if (Output.isFilename())
91 F = Output.getFilename();
92
93 assert(!F.empty() && "Cannot determine remarks output name.");
94 // Append "opt.ld.<format>" to the end of the file name.
95 CmdArgs.push_back(
96 Args.MakeArgString(Twine("--plugin-opt=opt-remarks-filename=") + F +
97 Twine(".opt.ld.") + Format));
98
99 if (const Arg *A =
100 Args.getLastArg(options::OPT_foptimization_record_passes_EQ))
101 CmdArgs.push_back(Args.MakeArgString(
102 Twine("--plugin-opt=opt-remarks-passes=") + A->getValue()));
103
104 CmdArgs.push_back(Args.MakeArgString(
105 Twine("--plugin-opt=opt-remarks-format=") + Format.data()));
106 }
107
renderRemarksHotnessOptions(const ArgList & Args,ArgStringList & CmdArgs)108 static void renderRemarksHotnessOptions(const ArgList &Args,
109 ArgStringList &CmdArgs) {
110 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
111 options::OPT_fno_diagnostics_show_hotness, false))
112 CmdArgs.push_back("--plugin-opt=opt-remarks-with-hotness");
113
114 if (const Arg *A =
115 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ))
116 CmdArgs.push_back(Args.MakeArgString(
117 Twine("--plugin-opt=opt-remarks-hotness-threshold=") + A->getValue()));
118 }
119
addPathIfExists(const Driver & D,const Twine & Path,ToolChain::path_list & Paths)120 void tools::addPathIfExists(const Driver &D, const Twine &Path,
121 ToolChain::path_list &Paths) {
122 if (D.getVFS().exists(Path))
123 Paths.push_back(Path.str());
124 }
125
handleTargetFeaturesGroup(const ArgList & Args,std::vector<StringRef> & Features,OptSpecifier Group)126 void tools::handleTargetFeaturesGroup(const ArgList &Args,
127 std::vector<StringRef> &Features,
128 OptSpecifier Group) {
129 for (const Arg *A : Args.filtered(Group)) {
130 StringRef Name = A->getOption().getName();
131 A->claim();
132
133 // Skip over "-m".
134 assert(Name.startswith("m") && "Invalid feature name.");
135 Name = Name.substr(1);
136
137 bool IsNegative = Name.startswith("no-");
138 if (IsNegative)
139 Name = Name.substr(3);
140 Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
141 }
142 }
143
144 std::vector<StringRef>
unifyTargetFeatures(const std::vector<StringRef> & Features)145 tools::unifyTargetFeatures(const std::vector<StringRef> &Features) {
146 std::vector<StringRef> UnifiedFeatures;
147 // Find the last of each feature.
148 llvm::StringMap<unsigned> LastOpt;
149 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
150 StringRef Name = Features[I];
151 assert(Name[0] == '-' || Name[0] == '+');
152 LastOpt[Name.drop_front(1)] = I;
153 }
154
155 for (unsigned I = 0, N = Features.size(); I < N; ++I) {
156 // If this feature was overridden, ignore it.
157 StringRef Name = Features[I];
158 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
159 assert(LastI != LastOpt.end());
160 unsigned Last = LastI->second;
161 if (Last != I)
162 continue;
163
164 UnifiedFeatures.push_back(Name);
165 }
166 return UnifiedFeatures;
167 }
168
addDirectoryList(const ArgList & Args,ArgStringList & CmdArgs,const char * ArgName,const char * EnvVar)169 void tools::addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,
170 const char *ArgName, const char *EnvVar) {
171 const char *DirList = ::getenv(EnvVar);
172 bool CombinedArg = false;
173
174 if (!DirList)
175 return; // Nothing to do.
176
177 StringRef Name(ArgName);
178 if (Name.equals("-I") || Name.equals("-L") || Name.empty())
179 CombinedArg = true;
180
181 StringRef Dirs(DirList);
182 if (Dirs.empty()) // Empty string should not add '.'.
183 return;
184
185 StringRef::size_type Delim;
186 while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {
187 if (Delim == 0) { // Leading colon.
188 if (CombinedArg) {
189 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
190 } else {
191 CmdArgs.push_back(ArgName);
192 CmdArgs.push_back(".");
193 }
194 } else {
195 if (CombinedArg) {
196 CmdArgs.push_back(
197 Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
198 } else {
199 CmdArgs.push_back(ArgName);
200 CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
201 }
202 }
203 Dirs = Dirs.substr(Delim + 1);
204 }
205
206 if (Dirs.empty()) { // Trailing colon.
207 if (CombinedArg) {
208 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
209 } else {
210 CmdArgs.push_back(ArgName);
211 CmdArgs.push_back(".");
212 }
213 } else { // Add the last path.
214 if (CombinedArg) {
215 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
216 } else {
217 CmdArgs.push_back(ArgName);
218 CmdArgs.push_back(Args.MakeArgString(Dirs));
219 }
220 }
221 }
222
AddLinkerInputs(const ToolChain & TC,const InputInfoList & Inputs,const ArgList & Args,ArgStringList & CmdArgs,const JobAction & JA)223 void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
224 const ArgList &Args, ArgStringList &CmdArgs,
225 const JobAction &JA) {
226 const Driver &D = TC.getDriver();
227
228 // Add extra linker input arguments which are not treated as inputs
229 // (constructed via -Xarch_).
230 Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
231
232 // LIBRARY_PATH are included before user inputs and only supported on native
233 // toolchains.
234 if (!TC.isCrossCompiling())
235 addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
236
237 for (const auto &II : Inputs) {
238 // If the current tool chain refers to an OpenMP offloading host, we
239 // should ignore inputs that refer to OpenMP offloading devices -
240 // they will be embedded according to a proper linker script.
241 if (auto *IA = II.getAction())
242 if ((JA.isHostOffloading(Action::OFK_OpenMP) &&
243 IA->isDeviceOffloading(Action::OFK_OpenMP)))
244 continue;
245
246 if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
247 // Don't try to pass LLVM inputs unless we have native support.
248 D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
249
250 // Add filenames immediately.
251 if (II.isFilename()) {
252 CmdArgs.push_back(II.getFilename());
253 continue;
254 }
255
256 // Otherwise, this is a linker input argument.
257 const Arg &A = II.getInputArg();
258
259 // Handle reserved library options.
260 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
261 TC.AddCXXStdlibLibArgs(Args, CmdArgs);
262 else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
263 TC.AddCCKextLibArgs(Args, CmdArgs);
264 else if (A.getOption().matches(options::OPT_z)) {
265 // Pass -z prefix for gcc linker compatibility.
266 A.claim();
267 A.render(Args, CmdArgs);
268 } else {
269 A.renderAsInput(Args, CmdArgs);
270 }
271 }
272 }
273
addLinkerCompressDebugSectionsOption(const ToolChain & TC,const llvm::opt::ArgList & Args,llvm::opt::ArgStringList & CmdArgs)274 void tools::addLinkerCompressDebugSectionsOption(
275 const ToolChain &TC, const llvm::opt::ArgList &Args,
276 llvm::opt::ArgStringList &CmdArgs) {
277 // GNU ld supports --compress-debug-sections=none|zlib|zlib-gnu|zlib-gabi
278 // whereas zlib is an alias to zlib-gabi. Therefore -gz=none|zlib|zlib-gnu
279 // are translated to --compress-debug-sections=none|zlib|zlib-gnu.
280 // -gz is not translated since ld --compress-debug-sections option requires an
281 // argument.
282 if (const Arg *A = Args.getLastArg(options::OPT_gz_EQ)) {
283 StringRef V = A->getValue();
284 if (V == "none" || V == "zlib" || V == "zlib-gnu")
285 CmdArgs.push_back(Args.MakeArgString("--compress-debug-sections=" + V));
286 else
287 TC.getDriver().Diag(diag::err_drv_unsupported_option_argument)
288 << A->getOption().getName() << V;
289 }
290 }
291
AddTargetFeature(const ArgList & Args,std::vector<StringRef> & Features,OptSpecifier OnOpt,OptSpecifier OffOpt,StringRef FeatureName)292 void tools::AddTargetFeature(const ArgList &Args,
293 std::vector<StringRef> &Features,
294 OptSpecifier OnOpt, OptSpecifier OffOpt,
295 StringRef FeatureName) {
296 if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {
297 if (A->getOption().matches(OnOpt))
298 Features.push_back(Args.MakeArgString("+" + FeatureName));
299 else
300 Features.push_back(Args.MakeArgString("-" + FeatureName));
301 }
302 }
303
304 /// Get the (LLVM) name of the AMDGPU gpu we are targeting.
getAMDGPUTargetGPU(const llvm::Triple & T,const ArgList & Args)305 static std::string getAMDGPUTargetGPU(const llvm::Triple &T,
306 const ArgList &Args) {
307 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
308 auto GPUName = getProcessorFromTargetID(T, A->getValue());
309 return llvm::StringSwitch<std::string>(GPUName)
310 .Cases("rv630", "rv635", "r600")
311 .Cases("rv610", "rv620", "rs780", "rs880")
312 .Case("rv740", "rv770")
313 .Case("palm", "cedar")
314 .Cases("sumo", "sumo2", "sumo")
315 .Case("hemlock", "cypress")
316 .Case("aruba", "cayman")
317 .Default(GPUName.str());
318 }
319 return "";
320 }
321
getLanaiTargetCPU(const ArgList & Args)322 static std::string getLanaiTargetCPU(const ArgList &Args) {
323 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
324 return A->getValue();
325 }
326 return "";
327 }
328
329 /// Get the (LLVM) name of the WebAssembly cpu we are targeting.
getWebAssemblyTargetCPU(const ArgList & Args)330 static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
331 // If we have -mcpu=, use that.
332 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
333 StringRef CPU = A->getValue();
334
335 #ifdef __wasm__
336 // Handle "native" by examining the host. "native" isn't meaningful when
337 // cross compiling, so only support this when the host is also WebAssembly.
338 if (CPU == "native")
339 return llvm::sys::getHostCPUName();
340 #endif
341
342 return CPU;
343 }
344
345 return "generic";
346 }
347
getCPUName(const ArgList & Args,const llvm::Triple & T,bool FromAs)348 std::string tools::getCPUName(const ArgList &Args, const llvm::Triple &T,
349 bool FromAs) {
350 Arg *A;
351
352 switch (T.getArch()) {
353 default:
354 return "";
355
356 case llvm::Triple::aarch64:
357 case llvm::Triple::aarch64_32:
358 case llvm::Triple::aarch64_be:
359 return aarch64::getAArch64TargetCPU(Args, T, A);
360
361 case llvm::Triple::arm:
362 case llvm::Triple::armeb:
363 case llvm::Triple::thumb:
364 case llvm::Triple::thumbeb: {
365 StringRef MArch, MCPU;
366 arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
367 return arm::getARMTargetCPU(MCPU, MArch, T);
368 }
369
370 case llvm::Triple::avr:
371 if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))
372 return A->getValue();
373 return "";
374
375 case llvm::Triple::mips:
376 case llvm::Triple::mipsel:
377 case llvm::Triple::mips64:
378 case llvm::Triple::mips64el: {
379 StringRef CPUName;
380 StringRef ABIName;
381 mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
382 return std::string(CPUName);
383 }
384
385 case llvm::Triple::nvptx:
386 case llvm::Triple::nvptx64:
387 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
388 return A->getValue();
389 return "";
390
391 case llvm::Triple::ppc:
392 case llvm::Triple::ppc64:
393 case llvm::Triple::ppc64le: {
394 std::string TargetCPUName = ppc::getPPCTargetCPU(Args);
395 // LLVM may default to generating code for the native CPU,
396 // but, like gcc, we default to a more generic option for
397 // each architecture. (except on AIX)
398 if (!TargetCPUName.empty())
399 return TargetCPUName;
400
401 if (T.isOSAIX())
402 TargetCPUName = "pwr4";
403 else if (T.getArch() == llvm::Triple::ppc64le)
404 TargetCPUName = "ppc64le";
405 else if (T.getArch() == llvm::Triple::ppc64)
406 TargetCPUName = "ppc64";
407 else
408 TargetCPUName = "ppc";
409
410 return TargetCPUName;
411 }
412 case llvm::Triple::riscv32:
413 case llvm::Triple::riscv64:
414 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
415 return A->getValue();
416 return "";
417
418 case llvm::Triple::bpfel:
419 case llvm::Triple::bpfeb:
420 case llvm::Triple::sparc:
421 case llvm::Triple::sparcel:
422 case llvm::Triple::sparcv9:
423 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
424 return A->getValue();
425 if (T.getArch() == llvm::Triple::sparc && T.isOSSolaris())
426 return "v9";
427 return "";
428
429 case llvm::Triple::x86:
430 case llvm::Triple::x86_64:
431 return x86::getX86TargetCPU(Args, T);
432
433 case llvm::Triple::hexagon:
434 return "hexagon" +
435 toolchains::HexagonToolChain::GetTargetCPUVersion(Args).str();
436
437 case llvm::Triple::lanai:
438 return getLanaiTargetCPU(Args);
439
440 case llvm::Triple::systemz:
441 return systemz::getSystemZTargetCPU(Args);
442
443 case llvm::Triple::r600:
444 case llvm::Triple::amdgcn:
445 return getAMDGPUTargetGPU(T, Args);
446
447 case llvm::Triple::wasm32:
448 case llvm::Triple::wasm64:
449 return std::string(getWebAssemblyTargetCPU(Args));
450 }
451 }
452
getLTOParallelism(const ArgList & Args,const Driver & D)453 llvm::StringRef tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
454 Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
455 if (!LtoJobsArg)
456 return {};
457 if (!llvm::get_threadpool_strategy(LtoJobsArg->getValue()))
458 D.Diag(diag::err_drv_invalid_int_value)
459 << LtoJobsArg->getAsString(Args) << LtoJobsArg->getValue();
460 return LtoJobsArg->getValue();
461 }
462
463 // CloudABI uses -ffunction-sections and -fdata-sections by default.
isUseSeparateSections(const llvm::Triple & Triple)464 bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
465 return Triple.getOS() == llvm::Triple::CloudABI;
466 }
467
addLTOOptions(const ToolChain & ToolChain,const ArgList & Args,ArgStringList & CmdArgs,const InputInfo & Output,const InputInfo & Input,bool IsThinLTO)468 void tools::addLTOOptions(const ToolChain &ToolChain, const ArgList &Args,
469 ArgStringList &CmdArgs, const InputInfo &Output,
470 const InputInfo &Input, bool IsThinLTO) {
471 const char *Linker = Args.MakeArgString(ToolChain.GetLinkerPath());
472 const Driver &D = ToolChain.getDriver();
473 if (llvm::sys::path::filename(Linker) != "ld.lld" &&
474 llvm::sys::path::stem(Linker) != "ld.lld") {
475 // Tell the linker to load the plugin. This has to come before
476 // AddLinkerInputs as gold requires -plugin to come before any -plugin-opt
477 // that -Wl might forward.
478 CmdArgs.push_back("-plugin");
479
480 #if defined(_WIN32)
481 const char *Suffix = ".dll";
482 #elif defined(__APPLE__)
483 const char *Suffix = ".dylib";
484 #else
485 const char *Suffix = ".so";
486 #endif
487
488 SmallString<1024> Plugin;
489 llvm::sys::path::native(
490 Twine(D.Dir) + "/../lib" CLANG_LIBDIR_SUFFIX "/LLVMgold" + Suffix,
491 Plugin);
492 CmdArgs.push_back(Args.MakeArgString(Plugin));
493 }
494
495 // Try to pass driver level flags relevant to LTO code generation down to
496 // the plugin.
497
498 // Handle flags for selecting CPU variants.
499 std::string CPU = getCPUName(Args, ToolChain.getTriple());
500 if (!CPU.empty())
501 CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
502
503 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
504 // The optimization level matches
505 // CompilerInvocation.cpp:getOptimizationLevel().
506 StringRef OOpt;
507 if (A->getOption().matches(options::OPT_O4) ||
508 A->getOption().matches(options::OPT_Ofast))
509 OOpt = "3";
510 else if (A->getOption().matches(options::OPT_O)) {
511 OOpt = A->getValue();
512 if (OOpt == "g")
513 OOpt = "1";
514 else if (OOpt == "s" || OOpt == "z")
515 OOpt = "2";
516 } else if (A->getOption().matches(options::OPT_O0))
517 OOpt = "0";
518 if (!OOpt.empty())
519 CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
520 }
521
522 if (Args.hasArg(options::OPT_gsplit_dwarf)) {
523 CmdArgs.push_back(
524 Args.MakeArgString(Twine("-plugin-opt=dwo_dir=") +
525 Output.getFilename() + "_dwo"));
526 }
527
528 if (IsThinLTO)
529 CmdArgs.push_back("-plugin-opt=thinlto");
530
531 StringRef Parallelism = getLTOParallelism(Args, D);
532 if (!Parallelism.empty())
533 CmdArgs.push_back(
534 Args.MakeArgString("-plugin-opt=jobs=" + Twine(Parallelism)));
535
536 // If an explicit debugger tuning argument appeared, pass it along.
537 if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
538 options::OPT_ggdbN_Group)) {
539 if (A->getOption().matches(options::OPT_glldb))
540 CmdArgs.push_back("-plugin-opt=-debugger-tune=lldb");
541 else if (A->getOption().matches(options::OPT_gsce))
542 CmdArgs.push_back("-plugin-opt=-debugger-tune=sce");
543 else
544 CmdArgs.push_back("-plugin-opt=-debugger-tune=gdb");
545 }
546
547 bool UseSeparateSections =
548 isUseSeparateSections(ToolChain.getEffectiveTriple());
549
550 if (Args.hasFlag(options::OPT_ffunction_sections,
551 options::OPT_fno_function_sections, UseSeparateSections)) {
552 CmdArgs.push_back("-plugin-opt=-function-sections");
553 }
554
555 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
556 UseSeparateSections)) {
557 CmdArgs.push_back("-plugin-opt=-data-sections");
558 }
559
560 if (Arg *A = getLastProfileSampleUseArg(Args)) {
561 StringRef FName = A->getValue();
562 if (!llvm::sys::fs::exists(FName))
563 D.Diag(diag::err_drv_no_such_file) << FName;
564 else
565 CmdArgs.push_back(
566 Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
567 }
568
569 auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,
570 options::OPT_fcs_profile_generate_EQ,
571 options::OPT_fno_profile_generate);
572 if (CSPGOGenerateArg &&
573 CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
574 CSPGOGenerateArg = nullptr;
575
576 auto *ProfileUseArg = getLastProfileUseArg(Args);
577
578 if (CSPGOGenerateArg) {
579 CmdArgs.push_back(Args.MakeArgString("-plugin-opt=cs-profile-generate"));
580 if (CSPGOGenerateArg->getOption().matches(
581 options::OPT_fcs_profile_generate_EQ)) {
582 SmallString<128> Path(CSPGOGenerateArg->getValue());
583 llvm::sys::path::append(Path, "default_%m.profraw");
584 CmdArgs.push_back(
585 Args.MakeArgString(Twine("-plugin-opt=cs-profile-path=") + Path));
586 } else
587 CmdArgs.push_back(
588 Args.MakeArgString("-plugin-opt=cs-profile-path=default_%m.profraw"));
589 } else if (ProfileUseArg) {
590 SmallString<128> Path(
591 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
592 if (Path.empty() || llvm::sys::fs::is_directory(Path))
593 llvm::sys::path::append(Path, "default.profdata");
594 CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=cs-profile-path=") +
595 Path));
596 }
597
598 // Need this flag to turn on new pass manager via Gold plugin.
599 if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
600 options::OPT_fno_experimental_new_pass_manager,
601 /* Default */ LLVM_ENABLE_NEW_PASS_MANAGER)) {
602 CmdArgs.push_back("-plugin-opt=new-pass-manager");
603 }
604
605 // Setup statistics file output.
606 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
607 if (!StatsFile.empty())
608 CmdArgs.push_back(
609 Args.MakeArgString(Twine("-plugin-opt=stats-file=") + StatsFile));
610
611 addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/true);
612
613 // Handle remark diagnostics on screen options: '-Rpass-*'.
614 renderRpassOptions(Args, CmdArgs);
615
616 // Handle serialized remarks options: '-fsave-optimization-record'
617 // and '-foptimization-record-*'.
618 if (willEmitRemarks(Args))
619 renderRemarksOptions(Args, CmdArgs, ToolChain.getEffectiveTriple(), Input,
620 Output);
621
622 // Handle remarks hotness/threshold related options.
623 renderRemarksHotnessOptions(Args, CmdArgs);
624 }
625
addArchSpecificRPath(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)626 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
627 ArgStringList &CmdArgs) {
628 // Enable -frtlib-add-rpath by default for the case of VE.
629 const bool IsVE = TC.getTriple().isVE();
630 bool DefaultValue = IsVE;
631 if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
632 options::OPT_fno_rtlib_add_rpath, DefaultValue))
633 return;
634
635 std::string CandidateRPath = TC.getArchSpecificLibPath();
636 if (TC.getVFS().exists(CandidateRPath)) {
637 CmdArgs.push_back("-rpath");
638 CmdArgs.push_back(Args.MakeArgString(CandidateRPath.c_str()));
639 }
640 }
641
addOpenMPRuntime(ArgStringList & CmdArgs,const ToolChain & TC,const ArgList & Args,bool ForceStaticHostRuntime,bool IsOffloadingHost,bool GompNeedsRT)642 bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
643 const ArgList &Args, bool ForceStaticHostRuntime,
644 bool IsOffloadingHost, bool GompNeedsRT) {
645 if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
646 options::OPT_fno_openmp, false))
647 return false;
648
649 Driver::OpenMPRuntimeKind RTKind = TC.getDriver().getOpenMPRuntime(Args);
650
651 if (RTKind == Driver::OMPRT_Unknown)
652 // Already diagnosed.
653 return false;
654
655 if (ForceStaticHostRuntime)
656 CmdArgs.push_back("-Bstatic");
657
658 switch (RTKind) {
659 case Driver::OMPRT_OMP:
660 CmdArgs.push_back("-lomp");
661 break;
662 case Driver::OMPRT_GOMP:
663 CmdArgs.push_back("-lgomp");
664 break;
665 case Driver::OMPRT_IOMP5:
666 CmdArgs.push_back("-liomp5");
667 break;
668 case Driver::OMPRT_Unknown:
669 break;
670 }
671
672 if (ForceStaticHostRuntime)
673 CmdArgs.push_back("-Bdynamic");
674
675 if (RTKind == Driver::OMPRT_GOMP && GompNeedsRT)
676 CmdArgs.push_back("-lrt");
677
678 if (IsOffloadingHost)
679 CmdArgs.push_back("-lomptarget");
680
681 addArchSpecificRPath(TC, Args, CmdArgs);
682
683 return true;
684 }
685
addSanitizerRuntime(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs,StringRef Sanitizer,bool IsShared,bool IsWhole)686 static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
687 ArgStringList &CmdArgs, StringRef Sanitizer,
688 bool IsShared, bool IsWhole) {
689 // Wrap any static runtimes that must be forced into executable in
690 // whole-archive.
691 if (IsWhole) CmdArgs.push_back("--whole-archive");
692 CmdArgs.push_back(TC.getCompilerRTArgString(
693 Args, Sanitizer, IsShared ? ToolChain::FT_Shared : ToolChain::FT_Static));
694 if (IsWhole) CmdArgs.push_back("--no-whole-archive");
695
696 if (IsShared) {
697 addArchSpecificRPath(TC, Args, CmdArgs);
698 }
699 }
700
701 // Tries to use a file with the list of dynamic symbols that need to be exported
702 // from the runtime library. Returns true if the file was found.
addSanitizerDynamicList(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs,StringRef Sanitizer)703 static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
704 ArgStringList &CmdArgs,
705 StringRef Sanitizer) {
706 // Solaris ld defaults to --export-dynamic behaviour but doesn't support
707 // the option, so don't try to pass it.
708 if (TC.getTriple().getOS() == llvm::Triple::Solaris)
709 return true;
710 // Myriad is static linking only. Furthermore, some versions of its
711 // linker have the bug where --export-dynamic overrides -static, so
712 // don't use --export-dynamic on that platform.
713 if (TC.getTriple().getVendor() == llvm::Triple::Myriad)
714 return true;
715 SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
716 if (llvm::sys::fs::exists(SanRT + ".syms")) {
717 CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
718 return true;
719 }
720 return false;
721 }
722
getAsNeededOption(const ToolChain & TC,bool as_needed)723 static const char *getAsNeededOption(const ToolChain &TC, bool as_needed) {
724 // While the Solaris 11.2 ld added --as-needed/--no-as-needed as aliases
725 // for the native forms -z ignore/-z record, they are missing in Illumos,
726 // so always use the native form.
727 if (TC.getTriple().isOSSolaris())
728 return as_needed ? "-zignore" : "-zrecord";
729 else
730 return as_needed ? "--as-needed" : "--no-as-needed";
731 }
732
linkSanitizerRuntimeDeps(const ToolChain & TC,ArgStringList & CmdArgs)733 void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
734 ArgStringList &CmdArgs) {
735 // Fuchsia never needs these. Any sanitizer runtimes with system
736 // dependencies use the `.deplibs` feature instead.
737 if (TC.getTriple().isOSFuchsia())
738 return;
739
740 // Force linking against the system libraries sanitizers depends on
741 // (see PR15823 why this is necessary).
742 CmdArgs.push_back(getAsNeededOption(TC, false));
743 // There's no libpthread or librt on RTEMS & Android.
744 if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&
745 !TC.getTriple().isAndroid()) {
746 CmdArgs.push_back("-lpthread");
747 if (!TC.getTriple().isOSOpenBSD())
748 CmdArgs.push_back("-lrt");
749 }
750 CmdArgs.push_back("-lm");
751 // There's no libdl on all OSes.
752 if (!TC.getTriple().isOSFreeBSD() &&
753 !TC.getTriple().isOSNetBSD() &&
754 !TC.getTriple().isOSOpenBSD() &&
755 TC.getTriple().getOS() != llvm::Triple::RTEMS)
756 CmdArgs.push_back("-ldl");
757 // Required for backtrace on some OSes
758 if (TC.getTriple().isOSFreeBSD() ||
759 TC.getTriple().isOSNetBSD())
760 CmdArgs.push_back("-lexecinfo");
761 }
762
763 static void
collectSanitizerRuntimes(const ToolChain & TC,const ArgList & Args,SmallVectorImpl<StringRef> & SharedRuntimes,SmallVectorImpl<StringRef> & StaticRuntimes,SmallVectorImpl<StringRef> & NonWholeStaticRuntimes,SmallVectorImpl<StringRef> & HelperStaticRuntimes,SmallVectorImpl<StringRef> & RequiredSymbols)764 collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
765 SmallVectorImpl<StringRef> &SharedRuntimes,
766 SmallVectorImpl<StringRef> &StaticRuntimes,
767 SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
768 SmallVectorImpl<StringRef> &HelperStaticRuntimes,
769 SmallVectorImpl<StringRef> &RequiredSymbols) {
770 const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
771 // Collect shared runtimes.
772 if (SanArgs.needsSharedRt()) {
773 if (SanArgs.needsAsanRt() && SanArgs.linkRuntimes()) {
774 SharedRuntimes.push_back("asan");
775 if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
776 HelperStaticRuntimes.push_back("asan-preinit");
777 }
778 if (SanArgs.needsMemProfRt() && SanArgs.linkRuntimes()) {
779 SharedRuntimes.push_back("memprof");
780 if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
781 HelperStaticRuntimes.push_back("memprof-preinit");
782 }
783 if (SanArgs.needsUbsanRt() && SanArgs.linkRuntimes()) {
784 if (SanArgs.requiresMinimalRuntime())
785 SharedRuntimes.push_back("ubsan_minimal");
786 else
787 SharedRuntimes.push_back("ubsan_standalone");
788 }
789 if (SanArgs.needsScudoRt() && SanArgs.linkRuntimes()) {
790 if (SanArgs.requiresMinimalRuntime())
791 SharedRuntimes.push_back("scudo_minimal");
792 else
793 SharedRuntimes.push_back("scudo");
794 }
795 if (SanArgs.needsTsanRt() && SanArgs.linkRuntimes())
796 SharedRuntimes.push_back("tsan");
797 if (SanArgs.needsHwasanRt() && SanArgs.linkRuntimes())
798 SharedRuntimes.push_back("hwasan");
799 }
800
801 // The stats_client library is also statically linked into DSOs.
802 if (SanArgs.needsStatsRt() && SanArgs.linkRuntimes())
803 StaticRuntimes.push_back("stats_client");
804
805 // Collect static runtimes.
806 if (Args.hasArg(options::OPT_shared)) {
807 // Don't link static runtimes into DSOs.
808 return;
809 }
810
811 // Each static runtime that has a DSO counterpart above is excluded below,
812 // but runtimes that exist only as static are not affected by needsSharedRt.
813
814 if (!SanArgs.needsSharedRt() && SanArgs.needsAsanRt() && SanArgs.linkRuntimes()) {
815 StaticRuntimes.push_back("asan");
816 if (SanArgs.linkCXXRuntimes())
817 StaticRuntimes.push_back("asan_cxx");
818 }
819
820 if (!SanArgs.needsSharedRt() && SanArgs.needsMemProfRt() &&
821 SanArgs.linkRuntimes()) {
822 StaticRuntimes.push_back("memprof");
823 if (SanArgs.linkCXXRuntimes())
824 StaticRuntimes.push_back("memprof_cxx");
825 }
826
827 if (!SanArgs.needsSharedRt() && SanArgs.needsHwasanRt() && SanArgs.linkRuntimes()) {
828 StaticRuntimes.push_back("hwasan");
829 if (SanArgs.linkCXXRuntimes())
830 StaticRuntimes.push_back("hwasan_cxx");
831 }
832 if (SanArgs.needsDfsanRt() && SanArgs.linkRuntimes())
833 StaticRuntimes.push_back("dfsan");
834 if (SanArgs.needsLsanRt() && SanArgs.linkRuntimes())
835 StaticRuntimes.push_back("lsan");
836 if (SanArgs.needsMsanRt() && SanArgs.linkRuntimes()) {
837 StaticRuntimes.push_back("msan");
838 if (SanArgs.linkCXXRuntimes())
839 StaticRuntimes.push_back("msan_cxx");
840 }
841 if (!SanArgs.needsSharedRt() && SanArgs.needsTsanRt() &&
842 SanArgs.linkRuntimes()) {
843 StaticRuntimes.push_back("tsan");
844 if (SanArgs.linkCXXRuntimes())
845 StaticRuntimes.push_back("tsan_cxx");
846 }
847 if (!SanArgs.needsSharedRt() && SanArgs.needsUbsanRt() && SanArgs.linkRuntimes()) {
848 if (SanArgs.requiresMinimalRuntime()) {
849 StaticRuntimes.push_back("ubsan_minimal");
850 } else {
851 StaticRuntimes.push_back("ubsan_standalone");
852 if (SanArgs.linkCXXRuntimes())
853 StaticRuntimes.push_back("ubsan_standalone_cxx");
854 }
855 }
856 if (SanArgs.needsSafeStackRt() && SanArgs.linkRuntimes()) {
857 NonWholeStaticRuntimes.push_back("safestack");
858 RequiredSymbols.push_back("__safestack_init");
859 }
860 if (!(SanArgs.needsSharedRt() && SanArgs.needsUbsanRt() && SanArgs.linkRuntimes())) {
861 if (SanArgs.needsCfiRt() && SanArgs.linkRuntimes())
862 StaticRuntimes.push_back("cfi");
863 if (SanArgs.needsCfiDiagRt() && SanArgs.linkRuntimes()) {
864 StaticRuntimes.push_back("cfi_diag");
865 if (SanArgs.linkCXXRuntimes())
866 StaticRuntimes.push_back("ubsan_standalone_cxx");
867 }
868 }
869 if (SanArgs.needsStatsRt() && SanArgs.linkRuntimes()) {
870 NonWholeStaticRuntimes.push_back("stats");
871 RequiredSymbols.push_back("__sanitizer_stats_register");
872 }
873 if (!SanArgs.needsSharedRt() && SanArgs.needsScudoRt() && SanArgs.linkRuntimes()) {
874 if (SanArgs.requiresMinimalRuntime()) {
875 StaticRuntimes.push_back("scudo_minimal");
876 if (SanArgs.linkCXXRuntimes())
877 StaticRuntimes.push_back("scudo_cxx_minimal");
878 } else {
879 StaticRuntimes.push_back("scudo");
880 if (SanArgs.linkCXXRuntimes())
881 StaticRuntimes.push_back("scudo_cxx");
882 }
883 }
884 }
885
886 // Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
887 // C runtime, etc). Returns true if sanitizer system deps need to be linked in.
addSanitizerRuntimes(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)888 bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
889 ArgStringList &CmdArgs) {
890 SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
891 NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
892 collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
893 NonWholeStaticRuntimes, HelperStaticRuntimes,
894 RequiredSymbols);
895
896 const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
897 // Inject libfuzzer dependencies.
898 if (SanArgs.needsFuzzer() && SanArgs.linkRuntimes() &&
899 !Args.hasArg(options::OPT_shared)) {
900
901 addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
902 if (SanArgs.needsFuzzerInterceptors())
903 addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer_interceptors", false,
904 true);
905 if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx)) {
906 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
907 !Args.hasArg(options::OPT_static);
908 if (OnlyLibstdcxxStatic)
909 CmdArgs.push_back("-Bstatic");
910 TC.AddCXXStdlibLibArgs(Args, CmdArgs);
911 if (OnlyLibstdcxxStatic)
912 CmdArgs.push_back("-Bdynamic");
913 }
914 }
915
916 for (auto RT : SharedRuntimes)
917 addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
918 for (auto RT : HelperStaticRuntimes)
919 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
920 bool AddExportDynamic = false;
921 for (auto RT : StaticRuntimes) {
922 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
923 AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
924 }
925 for (auto RT : NonWholeStaticRuntimes) {
926 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
927 AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
928 }
929 for (auto S : RequiredSymbols) {
930 CmdArgs.push_back("-u");
931 CmdArgs.push_back(Args.MakeArgString(S));
932 }
933 // If there is a static runtime with no dynamic list, force all the symbols
934 // to be dynamic to be sure we export sanitizer interface functions.
935 if (AddExportDynamic)
936 CmdArgs.push_back("--export-dynamic");
937
938 if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
939 CmdArgs.push_back("--export-dynamic-symbol=__cfi_check");
940
941 return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
942 }
943
addXRayRuntime(const ToolChain & TC,const ArgList & Args,ArgStringList & CmdArgs)944 bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {
945 if (Args.hasArg(options::OPT_shared))
946 return false;
947
948 if (TC.getXRayArgs().needsXRayRt()) {
949 CmdArgs.push_back("-whole-archive");
950 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray"));
951 for (const auto &Mode : TC.getXRayArgs().modeList())
952 CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode));
953 CmdArgs.push_back("-no-whole-archive");
954 return true;
955 }
956
957 return false;
958 }
959
linkXRayRuntimeDeps(const ToolChain & TC,ArgStringList & CmdArgs)960 void tools::linkXRayRuntimeDeps(const ToolChain &TC, ArgStringList &CmdArgs) {
961 CmdArgs.push_back(getAsNeededOption(TC, false));
962 CmdArgs.push_back("-lpthread");
963 if (!TC.getTriple().isOSOpenBSD())
964 CmdArgs.push_back("-lrt");
965 CmdArgs.push_back("-lm");
966
967 if (!TC.getTriple().isOSFreeBSD() &&
968 !TC.getTriple().isOSNetBSD() &&
969 !TC.getTriple().isOSOpenBSD())
970 CmdArgs.push_back("-ldl");
971 }
972
areOptimizationsEnabled(const ArgList & Args)973 bool tools::areOptimizationsEnabled(const ArgList &Args) {
974 // Find the last -O arg and see if it is non-zero.
975 if (Arg *A = Args.getLastArg(options::OPT_O_Group))
976 return !A->getOption().matches(options::OPT_O0);
977 // Defaults to -O0.
978 return false;
979 }
980
SplitDebugName(const JobAction & JA,const ArgList & Args,const InputInfo & Input,const InputInfo & Output)981 const char *tools::SplitDebugName(const JobAction &JA, const ArgList &Args,
982 const InputInfo &Input,
983 const InputInfo &Output) {
984 auto AddPostfix = [JA](auto &F) {
985 if (JA.getOffloadingDeviceKind() == Action::OFK_HIP)
986 F += (Twine("_") + JA.getOffloadingArch()).str();
987 F += ".dwo";
988 };
989 if (Arg *A = Args.getLastArg(options::OPT_gsplit_dwarf_EQ))
990 if (StringRef(A->getValue()) == "single")
991 return Args.MakeArgString(Output.getFilename());
992
993 Arg *FinalOutput = Args.getLastArg(options::OPT_o);
994 if (FinalOutput && Args.hasArg(options::OPT_c)) {
995 SmallString<128> T(FinalOutput->getValue());
996 llvm::sys::path::remove_filename(T);
997 llvm::sys::path::append(T, llvm::sys::path::stem(FinalOutput->getValue()));
998 AddPostfix(T);
999 return Args.MakeArgString(T);
1000 } else {
1001 // Use the compilation dir.
1002 SmallString<128> T(
1003 Args.getLastArgValue(options::OPT_fdebug_compilation_dir));
1004 SmallString<128> F(llvm::sys::path::stem(Input.getBaseInput()));
1005 AddPostfix(F);
1006 T += F;
1007 return Args.MakeArgString(F);
1008 }
1009 }
1010
SplitDebugInfo(const ToolChain & TC,Compilation & C,const Tool & T,const JobAction & JA,const ArgList & Args,const InputInfo & Output,const char * OutFile)1011 void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
1012 const JobAction &JA, const ArgList &Args,
1013 const InputInfo &Output, const char *OutFile) {
1014 ArgStringList ExtractArgs;
1015 ExtractArgs.push_back("--extract-dwo");
1016
1017 ArgStringList StripArgs;
1018 StripArgs.push_back("--strip-dwo");
1019
1020 // Grabbing the output of the earlier compile step.
1021 StripArgs.push_back(Output.getFilename());
1022 ExtractArgs.push_back(Output.getFilename());
1023 ExtractArgs.push_back(OutFile);
1024
1025 const char *Exec =
1026 Args.MakeArgString(TC.GetProgramPath(CLANG_DEFAULT_OBJCOPY));
1027 InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
1028
1029 // First extract the dwo sections.
1030 C.addCommand(std::make_unique<Command>(JA, T,
1031 ResponseFileSupport::AtFileCurCP(),
1032 Exec, ExtractArgs, II, Output));
1033
1034 // Then remove them from the original .o file.
1035 C.addCommand(std::make_unique<Command>(
1036 JA, T, ResponseFileSupport::AtFileCurCP(), Exec, StripArgs, II, Output));
1037 }
1038
1039 // Claim options we don't want to warn if they are unused. We do this for
1040 // options that build systems might add but are unused when assembling or only
1041 // running the preprocessor for example.
claimNoWarnArgs(const ArgList & Args)1042 void tools::claimNoWarnArgs(const ArgList &Args) {
1043 // Don't warn about unused -f(no-)?lto. This can happen when we're
1044 // preprocessing, precompiling or assembling.
1045 Args.ClaimAllArgs(options::OPT_flto_EQ);
1046 Args.ClaimAllArgs(options::OPT_flto);
1047 Args.ClaimAllArgs(options::OPT_fno_lto);
1048 }
1049
getLastProfileUseArg(const ArgList & Args)1050 Arg *tools::getLastProfileUseArg(const ArgList &Args) {
1051 auto *ProfileUseArg = Args.getLastArg(
1052 options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
1053 options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
1054 options::OPT_fno_profile_instr_use);
1055
1056 if (ProfileUseArg &&
1057 ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
1058 ProfileUseArg = nullptr;
1059
1060 return ProfileUseArg;
1061 }
1062
getLastProfileSampleUseArg(const ArgList & Args)1063 Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
1064 auto *ProfileSampleUseArg = Args.getLastArg(
1065 options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
1066 options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
1067 options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
1068
1069 if (ProfileSampleUseArg &&
1070 (ProfileSampleUseArg->getOption().matches(
1071 options::OPT_fno_profile_sample_use) ||
1072 ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
1073 return nullptr;
1074
1075 return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
1076 options::OPT_fauto_profile_EQ);
1077 }
1078
1079 /// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
1080 /// smooshes them together with platform defaults, to decide whether
1081 /// this compile should be using PIC mode or not. Returns a tuple of
1082 /// (RelocationModel, PICLevel, IsPIE).
1083 std::tuple<llvm::Reloc::Model, unsigned, bool>
ParsePICArgs(const ToolChain & ToolChain,const ArgList & Args)1084 tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
1085 const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
1086 const llvm::Triple &Triple = ToolChain.getTriple();
1087
1088 bool PIE = ToolChain.isPIEDefault();
1089 bool PIC = PIE || ToolChain.isPICDefault();
1090 // The Darwin/MachO default to use PIC does not apply when using -static.
1091 if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))
1092 PIE = PIC = false;
1093 bool IsPICLevelTwo = PIC;
1094
1095 bool KernelOrKext =
1096 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
1097
1098 // Android-specific defaults for PIC/PIE
1099 if (Triple.isAndroid()) {
1100 switch (Triple.getArch()) {
1101 case llvm::Triple::arm:
1102 case llvm::Triple::armeb:
1103 case llvm::Triple::thumb:
1104 case llvm::Triple::thumbeb:
1105 case llvm::Triple::aarch64:
1106 case llvm::Triple::mips:
1107 case llvm::Triple::mipsel:
1108 case llvm::Triple::mips64:
1109 case llvm::Triple::mips64el:
1110 PIC = true; // "-fpic"
1111 break;
1112
1113 case llvm::Triple::x86:
1114 case llvm::Triple::x86_64:
1115 PIC = true; // "-fPIC"
1116 IsPICLevelTwo = true;
1117 break;
1118
1119 default:
1120 break;
1121 }
1122 }
1123
1124 // OpenBSD-specific defaults for PIE
1125 if (Triple.isOSOpenBSD()) {
1126 switch (ToolChain.getArch()) {
1127 case llvm::Triple::arm:
1128 case llvm::Triple::aarch64:
1129 case llvm::Triple::mips64:
1130 case llvm::Triple::mips64el:
1131 case llvm::Triple::x86:
1132 case llvm::Triple::x86_64:
1133 IsPICLevelTwo = false; // "-fpie"
1134 break;
1135
1136 case llvm::Triple::ppc:
1137 case llvm::Triple::sparcv9:
1138 IsPICLevelTwo = true; // "-fPIE"
1139 break;
1140
1141 default:
1142 break;
1143 }
1144 }
1145
1146 // AMDGPU-specific defaults for PIC.
1147 if (Triple.getArch() == llvm::Triple::amdgcn)
1148 PIC = true;
1149
1150 // The last argument relating to either PIC or PIE wins, and no
1151 // other argument is used. If the last argument is any flavor of the
1152 // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
1153 // option implicitly enables PIC at the same level.
1154 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
1155 options::OPT_fpic, options::OPT_fno_pic,
1156 options::OPT_fPIE, options::OPT_fno_PIE,
1157 options::OPT_fpie, options::OPT_fno_pie);
1158 if (Triple.isOSWindows() && LastPICArg &&
1159 LastPICArg ==
1160 Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
1161 options::OPT_fPIE, options::OPT_fpie)) {
1162 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1163 << LastPICArg->getSpelling() << Triple.str();
1164 if (Triple.getArch() == llvm::Triple::x86_64)
1165 return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
1166 return std::make_tuple(llvm::Reloc::Static, 0U, false);
1167 }
1168
1169 // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
1170 // is forced, then neither PIC nor PIE flags will have no effect.
1171 if (!ToolChain.isPICDefaultForced()) {
1172 if (LastPICArg) {
1173 Option O = LastPICArg->getOption();
1174 if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
1175 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
1176 PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
1177 PIC =
1178 PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
1179 IsPICLevelTwo =
1180 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
1181 } else {
1182 PIE = PIC = false;
1183 if (EffectiveTriple.isPS4CPU()) {
1184 Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
1185 StringRef Model = ModelArg ? ModelArg->getValue() : "";
1186 if (Model != "kernel") {
1187 PIC = true;
1188 ToolChain.getDriver().Diag(diag::warn_drv_ps4_force_pic)
1189 << LastPICArg->getSpelling();
1190 }
1191 }
1192 }
1193 }
1194 }
1195
1196 // Introduce a Darwin and PS4-specific hack. If the default is PIC, but the
1197 // PIC level would've been set to level 1, force it back to level 2 PIC
1198 // instead.
1199 if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS4CPU()))
1200 IsPICLevelTwo |= ToolChain.isPICDefault();
1201
1202 // This kernel flags are a trump-card: they will disable PIC/PIE
1203 // generation, independent of the argument order.
1204 if (KernelOrKext &&
1205 ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
1206 !EffectiveTriple.isWatchOS()))
1207 PIC = PIE = false;
1208
1209 if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
1210 // This is a very special mode. It trumps the other modes, almost no one
1211 // uses it, and it isn't even valid on any OS but Darwin.
1212 if (!Triple.isOSDarwin())
1213 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1214 << A->getSpelling() << Triple.str();
1215
1216 // FIXME: Warn when this flag trumps some other PIC or PIE flag.
1217
1218 // Only a forced PIC mode can cause the actual compile to have PIC defines
1219 // etc., no flags are sufficient. This behavior was selected to closely
1220 // match that of llvm-gcc and Apple GCC before that.
1221 PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();
1222
1223 return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
1224 }
1225
1226 bool EmbeddedPISupported;
1227 switch (Triple.getArch()) {
1228 case llvm::Triple::arm:
1229 case llvm::Triple::armeb:
1230 case llvm::Triple::thumb:
1231 case llvm::Triple::thumbeb:
1232 EmbeddedPISupported = true;
1233 break;
1234 default:
1235 EmbeddedPISupported = false;
1236 break;
1237 }
1238
1239 bool ROPI = false, RWPI = false;
1240 Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
1241 if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
1242 if (!EmbeddedPISupported)
1243 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1244 << LastROPIArg->getSpelling() << Triple.str();
1245 ROPI = true;
1246 }
1247 Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
1248 if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
1249 if (!EmbeddedPISupported)
1250 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
1251 << LastRWPIArg->getSpelling() << Triple.str();
1252 RWPI = true;
1253 }
1254
1255 // ROPI and RWPI are not compatible with PIC or PIE.
1256 if ((ROPI || RWPI) && (PIC || PIE))
1257 ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
1258
1259 if (Triple.isMIPS()) {
1260 StringRef CPUName;
1261 StringRef ABIName;
1262 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1263 // When targeting the N64 ABI, PIC is the default, except in the case
1264 // when the -mno-abicalls option is used. In that case we exit
1265 // at next check regardless of PIC being set below.
1266 if (ABIName == "n64")
1267 PIC = true;
1268 // When targettng MIPS with -mno-abicalls, it's always static.
1269 if(Args.hasArg(options::OPT_mno_abicalls))
1270 return std::make_tuple(llvm::Reloc::Static, 0U, false);
1271 // Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,
1272 // does not use PIC level 2 for historical reasons.
1273 IsPICLevelTwo = false;
1274 }
1275
1276 if (PIC)
1277 return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
1278
1279 llvm::Reloc::Model RelocM = llvm::Reloc::Static;
1280 if (ROPI && RWPI)
1281 RelocM = llvm::Reloc::ROPI_RWPI;
1282 else if (ROPI)
1283 RelocM = llvm::Reloc::ROPI;
1284 else if (RWPI)
1285 RelocM = llvm::Reloc::RWPI;
1286
1287 return std::make_tuple(RelocM, 0U, false);
1288 }
1289
1290 // `-falign-functions` indicates that the functions should be aligned to a
1291 // 16-byte boundary.
1292 //
1293 // `-falign-functions=1` is the same as `-fno-align-functions`.
1294 //
1295 // The scalar `n` in `-falign-functions=n` must be an integral value between
1296 // [0, 65536]. If the value is not a power-of-two, it will be rounded up to
1297 // the nearest power-of-two.
1298 //
1299 // If we return `0`, the frontend will default to the backend's preferred
1300 // alignment.
1301 //
1302 // NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`
1303 // to mean `-falign-functions=16`. GCC defaults to the backend's preferred
1304 // alignment. For unaligned functions, we default to the backend's preferred
1305 // alignment.
ParseFunctionAlignment(const ToolChain & TC,const ArgList & Args)1306 unsigned tools::ParseFunctionAlignment(const ToolChain &TC,
1307 const ArgList &Args) {
1308 const Arg *A = Args.getLastArg(options::OPT_falign_functions,
1309 options::OPT_falign_functions_EQ,
1310 options::OPT_fno_align_functions);
1311 if (!A || A->getOption().matches(options::OPT_fno_align_functions))
1312 return 0;
1313
1314 if (A->getOption().matches(options::OPT_falign_functions))
1315 return 0;
1316
1317 unsigned Value = 0;
1318 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
1319 TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1320 << A->getAsString(Args) << A->getValue();
1321 return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;
1322 }
1323
ParseDebugDefaultVersion(const ToolChain & TC,const ArgList & Args)1324 unsigned tools::ParseDebugDefaultVersion(const ToolChain &TC,
1325 const ArgList &Args) {
1326 const Arg *A = Args.getLastArg(options::OPT_fdebug_default_version);
1327
1328 if (!A)
1329 return 0;
1330
1331 unsigned Value = 0;
1332 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 5 ||
1333 Value < 2)
1334 TC.getDriver().Diag(diag::err_drv_invalid_int_value)
1335 << A->getAsString(Args) << A->getValue();
1336 return Value;
1337 }
1338
AddAssemblerKPIC(const ToolChain & ToolChain,const ArgList & Args,ArgStringList & CmdArgs)1339 void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
1340 ArgStringList &CmdArgs) {
1341 llvm::Reloc::Model RelocationModel;
1342 unsigned PICLevel;
1343 bool IsPIE;
1344 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
1345
1346 if (RelocationModel != llvm::Reloc::Static)
1347 CmdArgs.push_back("-KPIC");
1348 }
1349
1350 /// Determine whether Objective-C automated reference counting is
1351 /// enabled.
isObjCAutoRefCount(const ArgList & Args)1352 bool tools::isObjCAutoRefCount(const ArgList &Args) {
1353 return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
1354 }
1355
1356 enum class LibGccType { UnspecifiedLibGcc, StaticLibGcc, SharedLibGcc };
1357
getLibGccType(const Driver & D,const ArgList & Args)1358 static LibGccType getLibGccType(const Driver &D, const ArgList &Args) {
1359 if (Args.hasArg(options::OPT_static_libgcc) ||
1360 Args.hasArg(options::OPT_static) || Args.hasArg(options::OPT_static_pie))
1361 return LibGccType::StaticLibGcc;
1362 if (Args.hasArg(options::OPT_shared_libgcc) || D.CCCIsCXX())
1363 return LibGccType::SharedLibGcc;
1364 return LibGccType::UnspecifiedLibGcc;
1365 }
1366
1367 // Gcc adds libgcc arguments in various ways:
1368 //
1369 // gcc <none>: -lgcc --as-needed -lgcc_s --no-as-needed
1370 // g++ <none>: -lgcc_s -lgcc
1371 // gcc shared: -lgcc_s -lgcc
1372 // g++ shared: -lgcc_s -lgcc
1373 // gcc static: -lgcc -lgcc_eh
1374 // g++ static: -lgcc -lgcc_eh
1375 // gcc static-pie: -lgcc -lgcc_eh
1376 // g++ static-pie: -lgcc -lgcc_eh
1377 //
1378 // Also, certain targets need additional adjustments.
1379
AddUnwindLibrary(const ToolChain & TC,const Driver & D,ArgStringList & CmdArgs,const ArgList & Args)1380 static void AddUnwindLibrary(const ToolChain &TC, const Driver &D,
1381 ArgStringList &CmdArgs, const ArgList &Args) {
1382 ToolChain::UnwindLibType UNW = TC.GetUnwindLibType(Args);
1383 // Targets that don't use unwind libraries.
1384 if (TC.getTriple().isAndroid() || TC.getTriple().isOSIAMCU() ||
1385 TC.getTriple().isOSBinFormatWasm() ||
1386 UNW == ToolChain::UNW_None)
1387 return;
1388
1389 LibGccType LGT = getLibGccType(D, Args);
1390 bool AsNeeded = LGT == LibGccType::UnspecifiedLibGcc &&
1391 !TC.getTriple().isAndroid() && !TC.getTriple().isOSCygMing();
1392 if (AsNeeded)
1393 CmdArgs.push_back(getAsNeededOption(TC, true));
1394
1395 switch (UNW) {
1396 case ToolChain::UNW_None:
1397 return;
1398 case ToolChain::UNW_Libgcc: {
1399 if (LGT == LibGccType::StaticLibGcc)
1400 CmdArgs.push_back("-lgcc_eh");
1401 else
1402 CmdArgs.push_back("-lgcc_s");
1403 break;
1404 }
1405 case ToolChain::UNW_CompilerRT:
1406 if (LGT == LibGccType::StaticLibGcc)
1407 CmdArgs.push_back("-l:libunwind.a");
1408 else if (TC.getTriple().isOSCygMing()) {
1409 if (LGT == LibGccType::SharedLibGcc)
1410 CmdArgs.push_back("-l:libunwind.dll.a");
1411 else
1412 // Let the linker choose between libunwind.dll.a and libunwind.a
1413 // depending on what's available, and depending on the -static flag
1414 CmdArgs.push_back("-lunwind");
1415 } else
1416 CmdArgs.push_back("-l:libunwind.so");
1417 break;
1418 }
1419
1420 if (AsNeeded)
1421 CmdArgs.push_back(getAsNeededOption(TC, false));
1422 }
1423
AddLibgcc(const ToolChain & TC,const Driver & D,ArgStringList & CmdArgs,const ArgList & Args)1424 static void AddLibgcc(const ToolChain &TC, const Driver &D,
1425 ArgStringList &CmdArgs, const ArgList &Args) {
1426 LibGccType LGT = getLibGccType(D, Args);
1427 if (LGT != LibGccType::SharedLibGcc)
1428 CmdArgs.push_back("-lgcc");
1429 AddUnwindLibrary(TC, D, CmdArgs, Args);
1430 if (LGT == LibGccType::SharedLibGcc)
1431 CmdArgs.push_back("-lgcc");
1432
1433 // According to Android ABI, we have to link with libdl if we are
1434 // linking with non-static libgcc.
1435 //
1436 // NOTE: This fixes a link error on Android MIPS as well. The non-static
1437 // libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl.
1438 if (TC.getTriple().isAndroid() && LGT != LibGccType::StaticLibGcc)
1439 CmdArgs.push_back("-ldl");
1440 }
1441
AddRunTimeLibs(const ToolChain & TC,const Driver & D,ArgStringList & CmdArgs,const ArgList & Args)1442 void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
1443 ArgStringList &CmdArgs, const ArgList &Args) {
1444 // Make use of compiler-rt if --rtlib option is used
1445 ToolChain::RuntimeLibType RLT = TC.GetRuntimeLibType(Args);
1446
1447 switch (RLT) {
1448 case ToolChain::RLT_CompilerRT:
1449 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
1450 AddUnwindLibrary(TC, D, CmdArgs, Args);
1451 break;
1452 case ToolChain::RLT_Libgcc:
1453 // Make sure libgcc is not used under MSVC environment by default
1454 if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1455 // Issue error diagnostic if libgcc is explicitly specified
1456 // through command line as --rtlib option argument.
1457 if (Args.hasArg(options::OPT_rtlib_EQ)) {
1458 TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
1459 << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC";
1460 }
1461 } else
1462 AddLibgcc(TC, D, CmdArgs, Args);
1463 break;
1464 }
1465 }
1466
getStatsFileName(const llvm::opt::ArgList & Args,const InputInfo & Output,const InputInfo & Input,const Driver & D)1467 SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,
1468 const InputInfo &Output,
1469 const InputInfo &Input,
1470 const Driver &D) {
1471 const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);
1472 if (!A)
1473 return {};
1474
1475 StringRef SaveStats = A->getValue();
1476 SmallString<128> StatsFile;
1477 if (SaveStats == "obj" && Output.isFilename()) {
1478 StatsFile.assign(Output.getFilename());
1479 llvm::sys::path::remove_filename(StatsFile);
1480 } else if (SaveStats != "cwd") {
1481 D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
1482 return {};
1483 }
1484
1485 StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
1486 llvm::sys::path::append(StatsFile, BaseName);
1487 llvm::sys::path::replace_extension(StatsFile, "stats");
1488 return StatsFile;
1489 }
1490
addMultilibFlag(bool Enabled,const char * const Flag,Multilib::flags_list & Flags)1491 void tools::addMultilibFlag(bool Enabled, const char *const Flag,
1492 Multilib::flags_list &Flags) {
1493 Flags.push_back(std::string(Enabled ? "+" : "-") + Flag);
1494 }
1495
addX86AlignBranchArgs(const Driver & D,const ArgList & Args,ArgStringList & CmdArgs,bool IsLTO)1496 void tools::addX86AlignBranchArgs(const Driver &D, const ArgList &Args,
1497 ArgStringList &CmdArgs, bool IsLTO) {
1498 auto addArg = [&, IsLTO](const Twine &Arg) {
1499 if (IsLTO) {
1500 CmdArgs.push_back(Args.MakeArgString("-plugin-opt=" + Arg));
1501 } else {
1502 CmdArgs.push_back("-mllvm");
1503 CmdArgs.push_back(Args.MakeArgString(Arg));
1504 }
1505 };
1506
1507 if (Args.hasArg(options::OPT_mbranches_within_32B_boundaries)) {
1508 addArg(Twine("-x86-branches-within-32B-boundaries"));
1509 }
1510 if (const Arg *A = Args.getLastArg(options::OPT_malign_branch_boundary_EQ)) {
1511 StringRef Value = A->getValue();
1512 unsigned Boundary;
1513 if (Value.getAsInteger(10, Boundary) || Boundary < 16 ||
1514 !llvm::isPowerOf2_64(Boundary)) {
1515 D.Diag(diag::err_drv_invalid_argument_to_option)
1516 << Value << A->getOption().getName();
1517 } else {
1518 addArg("-x86-align-branch-boundary=" + Twine(Boundary));
1519 }
1520 }
1521 if (const Arg *A = Args.getLastArg(options::OPT_malign_branch_EQ)) {
1522 std::string AlignBranch;
1523 for (StringRef T : A->getValues()) {
1524 if (T != "fused" && T != "jcc" && T != "jmp" && T != "call" &&
1525 T != "ret" && T != "indirect")
1526 D.Diag(diag::err_drv_invalid_malign_branch_EQ)
1527 << T << "fused, jcc, jmp, call, ret, indirect";
1528 if (!AlignBranch.empty())
1529 AlignBranch += '+';
1530 AlignBranch += T;
1531 }
1532 addArg("-x86-align-branch=" + Twine(AlignBranch));
1533 }
1534 if (const Arg *A = Args.getLastArg(options::OPT_mpad_max_prefix_size_EQ)) {
1535 StringRef Value = A->getValue();
1536 unsigned PrefixSize;
1537 if (Value.getAsInteger(10, PrefixSize)) {
1538 D.Diag(diag::err_drv_invalid_argument_to_option)
1539 << Value << A->getOption().getName();
1540 } else {
1541 addArg("-x86-pad-max-prefix-size=" + Twine(PrefixSize));
1542 }
1543 }
1544 }
1545
getOrCheckAMDGPUCodeObjectVersion(const Driver & D,const llvm::opt::ArgList & Args,bool Diagnose)1546 unsigned tools::getOrCheckAMDGPUCodeObjectVersion(
1547 const Driver &D, const llvm::opt::ArgList &Args, bool Diagnose) {
1548 const unsigned MinCodeObjVer = 2;
1549 const unsigned MaxCodeObjVer = 4;
1550 unsigned CodeObjVer = 4;
1551
1552 // Emit warnings for legacy options even if they are overridden.
1553 if (Diagnose) {
1554 if (Args.hasArg(options::OPT_mno_code_object_v3_legacy))
1555 D.Diag(diag::warn_drv_deprecated_arg) << "-mno-code-object-v3"
1556 << "-mcode-object-version=2";
1557
1558 if (Args.hasArg(options::OPT_mcode_object_v3_legacy))
1559 D.Diag(diag::warn_drv_deprecated_arg) << "-mcode-object-v3"
1560 << "-mcode-object-version=3";
1561 }
1562
1563 // The last of -mcode-object-v3, -mno-code-object-v3 and
1564 // -mcode-object-version=<version> wins.
1565 if (auto *CodeObjArg =
1566 Args.getLastArg(options::OPT_mcode_object_v3_legacy,
1567 options::OPT_mno_code_object_v3_legacy,
1568 options::OPT_mcode_object_version_EQ)) {
1569 if (CodeObjArg->getOption().getID() ==
1570 options::OPT_mno_code_object_v3_legacy) {
1571 CodeObjVer = 2;
1572 } else if (CodeObjArg->getOption().getID() ==
1573 options::OPT_mcode_object_v3_legacy) {
1574 CodeObjVer = 3;
1575 } else {
1576 auto Remnant =
1577 StringRef(CodeObjArg->getValue()).getAsInteger(0, CodeObjVer);
1578 if (Diagnose &&
1579 (Remnant || CodeObjVer < MinCodeObjVer || CodeObjVer > MaxCodeObjVer))
1580 D.Diag(diag::err_drv_invalid_int_value)
1581 << CodeObjArg->getAsString(Args) << CodeObjArg->getValue();
1582 }
1583 }
1584 return CodeObjVer;
1585 }
1586