Bug Summary

File:tools/clang/lib/Driver/Driver.cpp
Warning:line 1375, column 17
Called C++ object pointer is null

Annotated Source Code

1//===--- Driver.cpp - Clang GCC Compatible Driver -------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Driver/Driver.h"
11#include "InputInfo.h"
12#include "ToolChains/AMDGPU.h"
13#include "ToolChains/AVR.h"
14#include "ToolChains/Ananas.h"
15#include "ToolChains/Clang.h"
16#include "ToolChains/CloudABI.h"
17#include "ToolChains/Contiki.h"
18#include "ToolChains/CrossWindows.h"
19#include "ToolChains/Cuda.h"
20#include "ToolChains/Darwin.h"
21#include "ToolChains/DragonFly.h"
22#include "ToolChains/FreeBSD.h"
23#include "ToolChains/Fuchsia.h"
24#include "ToolChains/Gnu.h"
25#include "ToolChains/BareMetal.h"
26#include "ToolChains/Haiku.h"
27#include "ToolChains/Hexagon.h"
28#include "ToolChains/Lanai.h"
29#include "ToolChains/Linux.h"
30#include "ToolChains/MinGW.h"
31#include "ToolChains/Minix.h"
32#include "ToolChains/MipsLinux.h"
33#include "ToolChains/MSVC.h"
34#include "ToolChains/Myriad.h"
35#include "ToolChains/NaCl.h"
36#include "ToolChains/NetBSD.h"
37#include "ToolChains/OpenBSD.h"
38#include "ToolChains/PS4CPU.h"
39#include "ToolChains/Solaris.h"
40#include "ToolChains/TCE.h"
41#include "ToolChains/WebAssembly.h"
42#include "ToolChains/XCore.h"
43#include "clang/Basic/Version.h"
44#include "clang/Basic/VirtualFileSystem.h"
45#include "clang/Config/config.h"
46#include "clang/Driver/Action.h"
47#include "clang/Driver/Compilation.h"
48#include "clang/Driver/DriverDiagnostic.h"
49#include "clang/Driver/Job.h"
50#include "clang/Driver/Options.h"
51#include "clang/Driver/SanitizerArgs.h"
52#include "clang/Driver/Tool.h"
53#include "clang/Driver/ToolChain.h"
54#include "llvm/ADT/ArrayRef.h"
55#include "llvm/ADT/STLExtras.h"
56#include "llvm/ADT/SmallSet.h"
57#include "llvm/ADT/StringExtras.h"
58#include "llvm/ADT/StringSet.h"
59#include "llvm/ADT/StringSwitch.h"
60#include "llvm/Option/Arg.h"
61#include "llvm/Option/ArgList.h"
62#include "llvm/Option/OptSpecifier.h"
63#include "llvm/Option/OptTable.h"
64#include "llvm/Option/Option.h"
65#include "llvm/Support/ErrorHandling.h"
66#include "llvm/Support/FileSystem.h"
67#include "llvm/Support/Path.h"
68#include "llvm/Support/PrettyStackTrace.h"
69#include "llvm/Support/Process.h"
70#include "llvm/Support/Program.h"
71#include "llvm/Support/TargetRegistry.h"
72#include "llvm/Support/raw_ostream.h"
73#include <map>
74#include <memory>
75#include <utility>
76#if LLVM_ON_UNIX1
77#include <unistd.h> // getpid
78#endif
79
80using namespace clang::driver;
81using namespace clang;
82using namespace llvm::opt;
83
84Driver::Driver(StringRef ClangExecutable, StringRef DefaultTargetTriple,
85 DiagnosticsEngine &Diags,
86 IntrusiveRefCntPtr<vfs::FileSystem> VFS)
87 : Opts(createDriverOptTable()), Diags(Diags), VFS(std::move(VFS)),
88 Mode(GCCMode), SaveTemps(SaveTempsNone), BitcodeEmbed(EmbedNone),
89 LTOMode(LTOK_None), ClangExecutable(ClangExecutable),
90 SysRoot(DEFAULT_SYSROOT""),
91 DriverTitle("clang LLVM compiler"), CCPrintOptionsFilename(nullptr),
92 CCPrintHeadersFilename(nullptr), CCLogDiagnosticsFilename(nullptr),
93 CCCPrintBindings(false), CCPrintHeaders(false), CCLogDiagnostics(false),
94 CCGenDiagnostics(false), DefaultTargetTriple(DefaultTargetTriple),
95 CCCGenericGCCName(""), CheckInputsExist(true), CCCUsePCH(true),
96 GenReproducer(false), SuppressMissingInputWarning(false) {
97
98 // Provide a sane fallback if no VFS is specified.
99 if (!this->VFS)
100 this->VFS = vfs::getRealFileSystem();
101
102 Name = llvm::sys::path::filename(ClangExecutable);
103 Dir = llvm::sys::path::parent_path(ClangExecutable);
104 InstalledDir = Dir; // Provide a sensible default installed dir.
105
106 // Compute the path to the resource directory.
107 StringRef ClangResourceDir(CLANG_RESOURCE_DIR"");
108 SmallString<128> P(Dir);
109 if (ClangResourceDir != "") {
110 llvm::sys::path::append(P, ClangResourceDir);
111 } else {
112 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX"");
113 P = llvm::sys::path::parent_path(Dir);
114 llvm::sys::path::append(P, Twine("lib") + ClangLibdirSuffix, "clang",
115 CLANG_VERSION_STRING"6.0.0");
116 }
117 ResourceDir = P.str();
118}
119
120void Driver::ParseDriverMode(StringRef ProgramName,
121 ArrayRef<const char *> Args) {
122 ClangNameParts = ToolChain::getTargetAndModeFromProgramName(ProgramName);
123 setDriverModeFromOption(ClangNameParts.DriverMode);
124
125 for (const char *ArgPtr : Args) {
126 // Ingore nullptrs, they are response file's EOL markers
127 if (ArgPtr == nullptr)
128 continue;
129 const StringRef Arg = ArgPtr;
130 setDriverModeFromOption(Arg);
131 }
132}
133
134void Driver::setDriverModeFromOption(StringRef Opt) {
135 const std::string OptName =
136 getOpts().getOption(options::OPT_driver_mode).getPrefixedName();
137 if (!Opt.startswith(OptName))
138 return;
139 StringRef Value = Opt.drop_front(OptName.size());
140
141 const unsigned M = llvm::StringSwitch<unsigned>(Value)
142 .Case("gcc", GCCMode)
143 .Case("g++", GXXMode)
144 .Case("cpp", CPPMode)
145 .Case("cl", CLMode)
146 .Default(~0U);
147
148 if (M != ~0U)
149 Mode = static_cast<DriverMode>(M);
150 else
151 Diag(diag::err_drv_unsupported_option_argument) << OptName << Value;
152}
153
154InputArgList Driver::ParseArgStrings(ArrayRef<const char *> ArgStrings,
155 bool &ContainsError) {
156 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
157 ContainsError = false;
158
159 unsigned IncludedFlagsBitmask;
160 unsigned ExcludedFlagsBitmask;
161 std::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
162 getIncludeExcludeOptionFlagMasks();
163
164 unsigned MissingArgIndex, MissingArgCount;
165 InputArgList Args =
166 getOpts().ParseArgs(ArgStrings, MissingArgIndex, MissingArgCount,
167 IncludedFlagsBitmask, ExcludedFlagsBitmask);
168
169 // Check for missing argument error.
170 if (MissingArgCount) {
171 Diag(diag::err_drv_missing_argument)
172 << Args.getArgString(MissingArgIndex) << MissingArgCount;
173 ContainsError |=
174 Diags.getDiagnosticLevel(diag::err_drv_missing_argument,
175 SourceLocation()) > DiagnosticsEngine::Warning;
176 }
177
178 // Check for unsupported options.
179 for (const Arg *A : Args) {
180 if (A->getOption().hasFlag(options::Unsupported)) {
181 Diag(diag::err_drv_unsupported_opt) << A->getAsString(Args);
182 ContainsError |= Diags.getDiagnosticLevel(diag::err_drv_unsupported_opt,
183 SourceLocation()) >
184 DiagnosticsEngine::Warning;
185 continue;
186 }
187
188 // Warn about -mcpu= without an argument.
189 if (A->getOption().matches(options::OPT_mcpu_EQ) && A->containsValue("")) {
190 Diag(diag::warn_drv_empty_joined_argument) << A->getAsString(Args);
191 ContainsError |= Diags.getDiagnosticLevel(
192 diag::warn_drv_empty_joined_argument,
193 SourceLocation()) > DiagnosticsEngine::Warning;
194 }
195 }
196
197 for (const Arg *A : Args.filtered(options::OPT_UNKNOWN)) {
198 auto ID = IsCLMode() ? diag::warn_drv_unknown_argument_clang_cl
199 : diag::err_drv_unknown_argument;
200
201 Diags.Report(ID) << A->getAsString(Args);
202 ContainsError |= Diags.getDiagnosticLevel(ID, SourceLocation()) >
203 DiagnosticsEngine::Warning;
204 }
205
206 return Args;
207}
208
209// Determine which compilation mode we are in. We look for options which
210// affect the phase, starting with the earliest phases, and record which
211// option we used to determine the final phase.
212phases::ID Driver::getFinalPhase(const DerivedArgList &DAL,
213 Arg **FinalPhaseArg) const {
214 Arg *PhaseArg = nullptr;
215 phases::ID FinalPhase;
216
217 // -{E,EP,P,M,MM} only run the preprocessor.
218 if (CCCIsCPP() || (PhaseArg = DAL.getLastArg(options::OPT_E)) ||
219 (PhaseArg = DAL.getLastArg(options::OPT__SLASH_EP)) ||
220 (PhaseArg = DAL.getLastArg(options::OPT_M, options::OPT_MM)) ||
221 (PhaseArg = DAL.getLastArg(options::OPT__SLASH_P))) {
222 FinalPhase = phases::Preprocess;
223
224 // --precompile only runs up to precompilation.
225 } else if ((PhaseArg = DAL.getLastArg(options::OPT__precompile))) {
226 FinalPhase = phases::Precompile;
227
228 // -{fsyntax-only,-analyze,emit-ast} only run up to the compiler.
229 } else if ((PhaseArg = DAL.getLastArg(options::OPT_fsyntax_only)) ||
230 (PhaseArg = DAL.getLastArg(options::OPT_module_file_info)) ||
231 (PhaseArg = DAL.getLastArg(options::OPT_verify_pch)) ||
232 (PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) ||
233 (PhaseArg = DAL.getLastArg(options::OPT_rewrite_legacy_objc)) ||
234 (PhaseArg = DAL.getLastArg(options::OPT__migrate)) ||
235 (PhaseArg = DAL.getLastArg(options::OPT__analyze,
236 options::OPT__analyze_auto)) ||
237 (PhaseArg = DAL.getLastArg(options::OPT_emit_ast))) {
238 FinalPhase = phases::Compile;
239
240 // -S only runs up to the backend.
241 } else if ((PhaseArg = DAL.getLastArg(options::OPT_S))) {
242 FinalPhase = phases::Backend;
243
244 // -c compilation only runs up to the assembler.
245 } else if ((PhaseArg = DAL.getLastArg(options::OPT_c))) {
246 FinalPhase = phases::Assemble;
247
248 // Otherwise do everything.
249 } else
250 FinalPhase = phases::Link;
251
252 if (FinalPhaseArg)
253 *FinalPhaseArg = PhaseArg;
254
255 return FinalPhase;
256}
257
258static Arg *MakeInputArg(DerivedArgList &Args, OptTable &Opts,
259 StringRef Value) {
260 Arg *A = new Arg(Opts.getOption(options::OPT_INPUT), Value,
261 Args.getBaseArgs().MakeIndex(Value), Value.data());
262 Args.AddSynthesizedArg(A);
263 A->claim();
264 return A;
265}
266
267DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
268 DerivedArgList *DAL = new DerivedArgList(Args);
269
270 bool HasNostdlib = Args.hasArg(options::OPT_nostdlib);
271 bool HasNodefaultlib = Args.hasArg(options::OPT_nodefaultlibs);
272 for (Arg *A : Args) {
273 // Unfortunately, we have to parse some forwarding options (-Xassembler,
274 // -Xlinker, -Xpreprocessor) because we either integrate their functionality
275 // (assembler and preprocessor), or bypass a previous driver ('collect2').
276
277 // Rewrite linker options, to replace --no-demangle with a custom internal
278 // option.
279 if ((A->getOption().matches(options::OPT_Wl_COMMA) ||
280 A->getOption().matches(options::OPT_Xlinker)) &&
281 A->containsValue("--no-demangle")) {
282 // Add the rewritten no-demangle argument.
283 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle));
284
285 // Add the remaining values as Xlinker arguments.
286 for (StringRef Val : A->getValues())
287 if (Val != "--no-demangle")
288 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker), Val);
289
290 continue;
291 }
292
293 // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by
294 // some build systems. We don't try to be complete here because we don't
295 // care to encourage this usage model.
296 if (A->getOption().matches(options::OPT_Wp_COMMA) &&
297 (A->getValue(0) == StringRef("-MD") ||
298 A->getValue(0) == StringRef("-MMD"))) {
299 // Rewrite to -MD/-MMD along with -MF.
300 if (A->getValue(0) == StringRef("-MD"))
301 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD));
302 else
303 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD));
304 if (A->getNumValues() == 2)
305 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF),
306 A->getValue(1));
307 continue;
308 }
309
310 // Rewrite reserved library names.
311 if (A->getOption().matches(options::OPT_l)) {
312 StringRef Value = A->getValue();
313
314 // Rewrite unless -nostdlib is present.
315 if (!HasNostdlib && !HasNodefaultlib && Value == "stdc++") {
316 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_reserved_lib_stdcxx));
317 continue;
318 }
319
320 // Rewrite unconditionally.
321 if (Value == "cc_kext") {
322 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_reserved_lib_cckext));
323 continue;
324 }
325 }
326
327 // Pick up inputs via the -- option.
328 if (A->getOption().matches(options::OPT__DASH_DASH)) {
329 A->claim();
330 for (StringRef Val : A->getValues())
331 DAL->append(MakeInputArg(*DAL, *Opts, Val));
332 continue;
333 }
334
335 DAL->append(A);
336 }
337
338 // Enforce -static if -miamcu is present.
339 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false))
340 DAL->AddFlagArg(0, Opts->getOption(options::OPT_static));
341
342// Add a default value of -mlinker-version=, if one was given and the user
343// didn't specify one.
344#if defined(HOST_LINK_VERSION)
345 if (!Args.hasArg(options::OPT_mlinker_version_EQ) &&
346 strlen(HOST_LINK_VERSION) > 0) {
347 DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ),
348 HOST_LINK_VERSION);
349 DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim();
350 }
351#endif
352
353 return DAL;
354}
355
356/// \brief Compute target triple from args.
357///
358/// This routine provides the logic to compute a target triple from various
359/// args passed to the driver and the default triple string.
360static llvm::Triple computeTargetTriple(const Driver &D,
361 StringRef DefaultTargetTriple,
362 const ArgList &Args,
363 StringRef DarwinArchName = "") {
364 // FIXME: Already done in Compilation *Driver::BuildCompilation
365 if (const Arg *A = Args.getLastArg(options::OPT_target))
366 DefaultTargetTriple = A->getValue();
367
368 llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple));
369
370 // Handle Apple-specific options available here.
371 if (Target.isOSBinFormatMachO()) {
372 // If an explict Darwin arch name is given, that trumps all.
373 if (!DarwinArchName.empty()) {
374 tools::darwin::setTripleTypeForMachOArchName(Target, DarwinArchName);
375 return Target;
376 }
377
378 // Handle the Darwin '-arch' flag.
379 if (Arg *A = Args.getLastArg(options::OPT_arch)) {
380 StringRef ArchName = A->getValue();
381 tools::darwin::setTripleTypeForMachOArchName(Target, ArchName);
382 }
383 }
384
385 // Handle pseudo-target flags '-mlittle-endian'/'-EL' and
386 // '-mbig-endian'/'-EB'.
387 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
388 options::OPT_mbig_endian)) {
389 if (A->getOption().matches(options::OPT_mlittle_endian)) {
390 llvm::Triple LE = Target.getLittleEndianArchVariant();
391 if (LE.getArch() != llvm::Triple::UnknownArch)
392 Target = std::move(LE);
393 } else {
394 llvm::Triple BE = Target.getBigEndianArchVariant();
395 if (BE.getArch() != llvm::Triple::UnknownArch)
396 Target = std::move(BE);
397 }
398 }
399
400 // Skip further flag support on OSes which don't support '-m32' or '-m64'.
401 if (Target.getArch() == llvm::Triple::tce ||
402 Target.getOS() == llvm::Triple::Minix)
403 return Target;
404
405 // Handle pseudo-target flags '-m64', '-mx32', '-m32' and '-m16'.
406 Arg *A = Args.getLastArg(options::OPT_m64, options::OPT_mx32,
407 options::OPT_m32, options::OPT_m16);
408 if (A) {
409 llvm::Triple::ArchType AT = llvm::Triple::UnknownArch;
410
411 if (A->getOption().matches(options::OPT_m64)) {
412 AT = Target.get64BitArchVariant().getArch();
413 if (Target.getEnvironment() == llvm::Triple::GNUX32)
414 Target.setEnvironment(llvm::Triple::GNU);
415 } else if (A->getOption().matches(options::OPT_mx32) &&
416 Target.get64BitArchVariant().getArch() == llvm::Triple::x86_64) {
417 AT = llvm::Triple::x86_64;
418 Target.setEnvironment(llvm::Triple::GNUX32);
419 } else if (A->getOption().matches(options::OPT_m32)) {
420 AT = Target.get32BitArchVariant().getArch();
421 if (Target.getEnvironment() == llvm::Triple::GNUX32)
422 Target.setEnvironment(llvm::Triple::GNU);
423 } else if (A->getOption().matches(options::OPT_m16) &&
424 Target.get32BitArchVariant().getArch() == llvm::Triple::x86) {
425 AT = llvm::Triple::x86;
426 Target.setEnvironment(llvm::Triple::CODE16);
427 }
428
429 if (AT != llvm::Triple::UnknownArch && AT != Target.getArch())
430 Target.setArch(AT);
431 }
432
433 // Handle -miamcu flag.
434 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
435 if (Target.get32BitArchVariant().getArch() != llvm::Triple::x86)
436 D.Diag(diag::err_drv_unsupported_opt_for_target) << "-miamcu"
437 << Target.str();
438
439 if (A && !A->getOption().matches(options::OPT_m32))
440 D.Diag(diag::err_drv_argument_not_allowed_with)
441 << "-miamcu" << A->getBaseArg().getAsString(Args);
442
443 Target.setArch(llvm::Triple::x86);
444 Target.setArchName("i586");
445 Target.setEnvironment(llvm::Triple::UnknownEnvironment);
446 Target.setEnvironmentName("");
447 Target.setOS(llvm::Triple::ELFIAMCU);
448 Target.setVendor(llvm::Triple::UnknownVendor);
449 Target.setVendorName("intel");
450 }
451
452 return Target;
453}
454
455// \brief Parse the LTO options and record the type of LTO compilation
456// based on which -f(no-)?lto(=.*)? option occurs last.
457void Driver::setLTOMode(const llvm::opt::ArgList &Args) {
458 LTOMode = LTOK_None;
459 if (!Args.hasFlag(options::OPT_flto, options::OPT_flto_EQ,
460 options::OPT_fno_lto, false))
461 return;
462
463 StringRef LTOName("full");
464
465 const Arg *A = Args.getLastArg(options::OPT_flto_EQ);
466 if (A)
467 LTOName = A->getValue();
468
469 LTOMode = llvm::StringSwitch<LTOKind>(LTOName)
470 .Case("full", LTOK_Full)
471 .Case("thin", LTOK_Thin)
472 .Default(LTOK_Unknown);
473
474 if (LTOMode == LTOK_Unknown) {
475 assert(A)((A) ? static_cast<void> (0) : __assert_fail ("A", "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 475, __PRETTY_FUNCTION__))
;
476 Diag(diag::err_drv_unsupported_option_argument) << A->getOption().getName()
477 << A->getValue();
478 }
479}
480
481/// Compute the desired OpenMP runtime from the flags provided.
482Driver::OpenMPRuntimeKind Driver::getOpenMPRuntime(const ArgList &Args) const {
483 StringRef RuntimeName(CLANG_DEFAULT_OPENMP_RUNTIME"libomp");
484
485 const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ);
486 if (A)
487 RuntimeName = A->getValue();
488
489 auto RT = llvm::StringSwitch<OpenMPRuntimeKind>(RuntimeName)
490 .Case("libomp", OMPRT_OMP)
491 .Case("libgomp", OMPRT_GOMP)
492 .Case("libiomp5", OMPRT_IOMP5)
493 .Default(OMPRT_Unknown);
494
495 if (RT == OMPRT_Unknown) {
496 if (A)
497 Diag(diag::err_drv_unsupported_option_argument)
498 << A->getOption().getName() << A->getValue();
499 else
500 // FIXME: We could use a nicer diagnostic here.
501 Diag(diag::err_drv_unsupported_opt) << "-fopenmp";
502 }
503
504 return RT;
505}
506
507void Driver::CreateOffloadingDeviceToolChains(Compilation &C,
508 InputList &Inputs) {
509
510 //
511 // CUDA
512 //
513 // We need to generate a CUDA toolchain if any of the inputs has a CUDA type.
514 if (llvm::any_of(Inputs, [](std::pair<types::ID, const llvm::opt::Arg *> &I) {
515 return types::isCuda(I.first);
516 })) {
517 const ToolChain *HostTC = C.getSingleOffloadToolChain<Action::OFK_Host>();
518 const llvm::Triple &HostTriple = HostTC->getTriple();
519 llvm::Triple CudaTriple(HostTriple.isArch64Bit() ? "nvptx64-nvidia-cuda"
520 : "nvptx-nvidia-cuda");
521 // Use the CUDA and host triples as the key into the ToolChains map, because
522 // the device toolchain we create depends on both.
523 auto &CudaTC = ToolChains[CudaTriple.str() + "/" + HostTriple.str()];
524 if (!CudaTC) {
525 CudaTC = llvm::make_unique<toolchains::CudaToolChain>(
526 *this, CudaTriple, *HostTC, C.getInputArgs(), Action::OFK_Cuda);
527 }
528 C.addOffloadDeviceToolChain(CudaTC.get(), Action::OFK_Cuda);
529 }
530
531 //
532 // OpenMP
533 //
534 // We need to generate an OpenMP toolchain if the user specified targets with
535 // the -fopenmp-targets option.
536 if (Arg *OpenMPTargets =
537 C.getInputArgs().getLastArg(options::OPT_fopenmp_targets_EQ)) {
538 if (OpenMPTargets->getNumValues()) {
539 // We expect that -fopenmp-targets is always used in conjunction with the
540 // option -fopenmp specifying a valid runtime with offloading support,
541 // i.e. libomp or libiomp.
542 bool HasValidOpenMPRuntime = C.getInputArgs().hasFlag(
543 options::OPT_fopenmp, options::OPT_fopenmp_EQ,
544 options::OPT_fno_openmp, false);
545 if (HasValidOpenMPRuntime) {
546 OpenMPRuntimeKind OpenMPKind = getOpenMPRuntime(C.getInputArgs());
547 HasValidOpenMPRuntime =
548 OpenMPKind == OMPRT_OMP || OpenMPKind == OMPRT_IOMP5;
549 }
550
551 if (HasValidOpenMPRuntime) {
552 llvm::StringMap<const char *> FoundNormalizedTriples;
553 for (const char *Val : OpenMPTargets->getValues()) {
554 llvm::Triple TT(Val);
555 std::string NormalizedName = TT.normalize();
556
557 // Make sure we don't have a duplicate triple.
558 auto Duplicate = FoundNormalizedTriples.find(NormalizedName);
559 if (Duplicate != FoundNormalizedTriples.end()) {
560 Diag(clang::diag::warn_drv_omp_offload_target_duplicate)
561 << Val << Duplicate->second;
562 continue;
563 }
564
565 // Store the current triple so that we can check for duplicates in the
566 // following iterations.
567 FoundNormalizedTriples[NormalizedName] = Val;
568
569 // If the specified target is invalid, emit a diagnostic.
570 if (TT.getArch() == llvm::Triple::UnknownArch)
571 Diag(clang::diag::err_drv_invalid_omp_target) << Val;
572 else {
573 const ToolChain *TC;
574 // CUDA toolchains have to be selected differently. They pair host
575 // and device in their implementation.
576 if (TT.isNVPTX()) {
577 const ToolChain *HostTC =
578 C.getSingleOffloadToolChain<Action::OFK_Host>();
579 assert(HostTC && "Host toolchain should be always defined.")((HostTC && "Host toolchain should be always defined."
) ? static_cast<void> (0) : __assert_fail ("HostTC && \"Host toolchain should be always defined.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 579, __PRETTY_FUNCTION__))
;
580 auto &CudaTC =
581 ToolChains[TT.str() + "/" + HostTC->getTriple().normalize()];
582 if (!CudaTC)
583 CudaTC = llvm::make_unique<toolchains::CudaToolChain>(
584 *this, TT, *HostTC, C.getInputArgs(), Action::OFK_OpenMP);
585 TC = CudaTC.get();
586 } else
587 TC = &getToolChain(C.getInputArgs(), TT);
588 C.addOffloadDeviceToolChain(TC, Action::OFK_OpenMP);
589 }
590 }
591 } else
592 Diag(clang::diag::err_drv_expecting_fopenmp_with_fopenmp_targets);
593 } else
594 Diag(clang::diag::warn_drv_empty_joined_argument)
595 << OpenMPTargets->getAsString(C.getInputArgs());
596 }
597
598 //
599 // TODO: Add support for other offloading programming models here.
600 //
601
602 return;
603}
604
605Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) {
606 llvm::PrettyStackTraceString CrashInfo("Compilation construction");
607
608 // FIXME: Handle environment options which affect driver behavior, somewhere
609 // (client?). GCC_EXEC_PREFIX, LPATH, CC_PRINT_OPTIONS.
610
611 if (Optional<std::string> CompilerPathValue =
612 llvm::sys::Process::GetEnv("COMPILER_PATH")) {
613 StringRef CompilerPath = *CompilerPathValue;
614 while (!CompilerPath.empty()) {
615 std::pair<StringRef, StringRef> Split =
616 CompilerPath.split(llvm::sys::EnvPathSeparator);
617 PrefixDirs.push_back(Split.first);
618 CompilerPath = Split.second;
619 }
620 }
621
622 // We look for the driver mode option early, because the mode can affect
623 // how other options are parsed.
624 ParseDriverMode(ClangExecutable, ArgList.slice(1));
625
626 // FIXME: What are we going to do with -V and -b?
627
628 // FIXME: This stuff needs to go into the Compilation, not the driver.
629 bool CCCPrintPhases;
630
631 bool ContainsError;
632 InputArgList Args = ParseArgStrings(ArgList.slice(1), ContainsError);
633
634 // Silence driver warnings if requested
635 Diags.setIgnoreAllWarnings(Args.hasArg(options::OPT_w));
636
637 // -no-canonical-prefixes is used very early in main.
638 Args.ClaimAllArgs(options::OPT_no_canonical_prefixes);
639
640 // Ignore -pipe.
641 Args.ClaimAllArgs(options::OPT_pipe);
642
643 // Extract -ccc args.
644 //
645 // FIXME: We need to figure out where this behavior should live. Most of it
646 // should be outside in the client; the parts that aren't should have proper
647 // options, either by introducing new ones or by overloading gcc ones like -V
648 // or -b.
649 CCCPrintPhases = Args.hasArg(options::OPT_ccc_print_phases);
650 CCCPrintBindings = Args.hasArg(options::OPT_ccc_print_bindings);
651 if (const Arg *A = Args.getLastArg(options::OPT_ccc_gcc_name))
652 CCCGenericGCCName = A->getValue();
653 CCCUsePCH =
654 Args.hasFlag(options::OPT_ccc_pch_is_pch, options::OPT_ccc_pch_is_pth);
655 GenReproducer = Args.hasFlag(options::OPT_gen_reproducer,
656 options::OPT_fno_crash_diagnostics,
657 !!::getenv("FORCE_CLANG_DIAGNOSTICS_CRASH"));
658 // FIXME: DefaultTargetTriple is used by the target-prefixed calls to as/ld
659 // and getToolChain is const.
660 if (IsCLMode()) {
661 // clang-cl targets MSVC-style Win32.
662 llvm::Triple T(DefaultTargetTriple);
663 T.setOS(llvm::Triple::Win32);
664 T.setVendor(llvm::Triple::PC);
665 T.setEnvironment(llvm::Triple::MSVC);
666 T.setObjectFormat(llvm::Triple::COFF);
667 DefaultTargetTriple = T.str();
668 }
669 if (const Arg *A = Args.getLastArg(options::OPT_target))
670 DefaultTargetTriple = A->getValue();
671 if (const Arg *A = Args.getLastArg(options::OPT_ccc_install_dir))
672 Dir = InstalledDir = A->getValue();
673 for (const Arg *A : Args.filtered(options::OPT_B)) {
674 A->claim();
675 PrefixDirs.push_back(A->getValue(0));
676 }
677 if (const Arg *A = Args.getLastArg(options::OPT__sysroot_EQ))
678 SysRoot = A->getValue();
679 if (const Arg *A = Args.getLastArg(options::OPT__dyld_prefix_EQ))
680 DyldPrefix = A->getValue();
681
682 if (const Arg *A = Args.getLastArg(options::OPT_resource_dir))
683 ResourceDir = A->getValue();
684
685 if (const Arg *A = Args.getLastArg(options::OPT_save_temps_EQ)) {
686 SaveTemps = llvm::StringSwitch<SaveTempsMode>(A->getValue())
687 .Case("cwd", SaveTempsCwd)
688 .Case("obj", SaveTempsObj)
689 .Default(SaveTempsCwd);
690 }
691
692 setLTOMode(Args);
693
694 // Process -fembed-bitcode= flags.
695 if (Arg *A = Args.getLastArg(options::OPT_fembed_bitcode_EQ)) {
696 StringRef Name = A->getValue();
697 unsigned Model = llvm::StringSwitch<unsigned>(Name)
698 .Case("off", EmbedNone)
699 .Case("all", EmbedBitcode)
700 .Case("bitcode", EmbedBitcode)
701 .Case("marker", EmbedMarker)
702 .Default(~0U);
703 if (Model == ~0U) {
704 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
705 << Name;
706 } else
707 BitcodeEmbed = static_cast<BitcodeEmbedMode>(Model);
708 }
709
710 std::unique_ptr<llvm::opt::InputArgList> UArgs =
711 llvm::make_unique<InputArgList>(std::move(Args));
712
713 // Perform the default argument translations.
714 DerivedArgList *TranslatedArgs = TranslateInputArgs(*UArgs);
715
716 // Owned by the host.
717 const ToolChain &TC = getToolChain(
718 *UArgs, computeTargetTriple(*this, DefaultTargetTriple, *UArgs));
719
720 // The compilation takes ownership of Args.
721 Compilation *C = new Compilation(*this, TC, UArgs.release(), TranslatedArgs,
722 ContainsError);
723
724 if (!HandleImmediateArgs(*C))
725 return C;
726
727 // Construct the list of inputs.
728 InputList Inputs;
729 BuildInputs(C->getDefaultToolChain(), *TranslatedArgs, Inputs);
730
731 // Populate the tool chains for the offloading devices, if any.
732 CreateOffloadingDeviceToolChains(*C, Inputs);
733
734 // Construct the list of abstract actions to perform for this compilation. On
735 // MachO targets this uses the driver-driver and universal actions.
736 if (TC.getTriple().isOSBinFormatMachO())
737 BuildUniversalActions(*C, C->getDefaultToolChain(), Inputs);
738 else
739 BuildActions(*C, C->getArgs(), Inputs, C->getActions());
740
741 if (CCCPrintPhases) {
742 PrintActions(*C);
743 return C;
744 }
745
746 BuildJobs(*C);
747
748 return C;
749}
750
751static void printArgList(raw_ostream &OS, const llvm::opt::ArgList &Args) {
752 llvm::opt::ArgStringList ASL;
753 for (const auto *A : Args)
754 A->render(Args, ASL);
755
756 for (auto I = ASL.begin(), E = ASL.end(); I != E; ++I) {
757 if (I != ASL.begin())
758 OS << ' ';
759 Command::printArg(OS, *I, true);
760 }
761 OS << '\n';
762}
763
764bool Driver::getCrashDiagnosticFile(StringRef ReproCrashFilename,
765 SmallString<128> &CrashDiagDir) {
766 using namespace llvm::sys;
767 assert(llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() &&((llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() &&
"Only knows about .crash files on Darwin") ? static_cast<
void> (0) : __assert_fail ("llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() && \"Only knows about .crash files on Darwin\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 768, __PRETTY_FUNCTION__))
768 "Only knows about .crash files on Darwin")((llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() &&
"Only knows about .crash files on Darwin") ? static_cast<
void> (0) : __assert_fail ("llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() && \"Only knows about .crash files on Darwin\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 768, __PRETTY_FUNCTION__))
;
769
770 // The .crash file can be found on at ~/Library/Logs/DiagnosticReports/
771 // (or /Library/Logs/DiagnosticReports for root) and has the filename pattern
772 // clang-<VERSION>_<YYYY-MM-DD-HHMMSS>_<hostname>.crash.
773 path::home_directory(CrashDiagDir);
774 if (CrashDiagDir.startswith("/var/root"))
775 CrashDiagDir = "/";
776 path::append(CrashDiagDir, "Library/Logs/DiagnosticReports");
777 int PID =
778#if LLVM_ON_UNIX1
779 getpid();
780#else
781 0;
782#endif
783 std::error_code EC;
784 fs::file_status FileStatus;
785 TimePoint<> LastAccessTime;
786 SmallString<128> CrashFilePath;
787 // Lookup the .crash files and get the one generated by a subprocess spawned
788 // by this driver invocation.
789 for (fs::directory_iterator File(CrashDiagDir, EC), FileEnd;
790 File != FileEnd && !EC; File.increment(EC)) {
791 StringRef FileName = path::filename(File->path());
792 if (!FileName.startswith(Name))
793 continue;
794 if (fs::status(File->path(), FileStatus))
795 continue;
796 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> CrashFile =
797 llvm::MemoryBuffer::getFile(File->path());
798 if (!CrashFile)
799 continue;
800 // The first line should start with "Process:", otherwise this isn't a real
801 // .crash file.
802 StringRef Data = CrashFile.get()->getBuffer();
803 if (!Data.startswith("Process:"))
804 continue;
805 // Parse parent process pid line, e.g: "Parent Process: clang-4.0 [79141]"
806 size_t ParentProcPos = Data.find("Parent Process:");
807 if (ParentProcPos == StringRef::npos)
808 continue;
809 size_t LineEnd = Data.find_first_of("\n", ParentProcPos);
810 if (LineEnd == StringRef::npos)
811 continue;
812 StringRef ParentProcess = Data.slice(ParentProcPos+15, LineEnd).trim();
813 int OpenBracket = -1, CloseBracket = -1;
814 for (size_t i = 0, e = ParentProcess.size(); i < e; ++i) {
815 if (ParentProcess[i] == '[')
816 OpenBracket = i;
817 if (ParentProcess[i] == ']')
818 CloseBracket = i;
819 }
820 // Extract the parent process PID from the .crash file and check whether
821 // it matches this driver invocation pid.
822 int CrashPID;
823 if (OpenBracket < 0 || CloseBracket < 0 ||
824 ParentProcess.slice(OpenBracket + 1, CloseBracket)
825 .getAsInteger(10, CrashPID) || CrashPID != PID) {
826 continue;
827 }
828
829 // Found a .crash file matching the driver pid. To avoid getting an older
830 // and misleading crash file, continue looking for the most recent.
831 // FIXME: the driver can dispatch multiple cc1 invocations, leading to
832 // multiple crashes poiting to the same parent process. Since the driver
833 // does not collect pid information for the dispatched invocation there's
834 // currently no way to distinguish among them.
835 const auto FileAccessTime = FileStatus.getLastModificationTime();
836 if (FileAccessTime > LastAccessTime) {
837 CrashFilePath.assign(File->path());
838 LastAccessTime = FileAccessTime;
839 }
840 }
841
842 // If found, copy it over to the location of other reproducer files.
843 if (!CrashFilePath.empty()) {
844 EC = fs::copy_file(CrashFilePath, ReproCrashFilename);
845 if (EC)
846 return false;
847 return true;
848 }
849
850 return false;
851}
852
853// When clang crashes, produce diagnostic information including the fully
854// preprocessed source file(s). Request that the developer attach the
855// diagnostic information to a bug report.
856void Driver::generateCompilationDiagnostics(Compilation &C,
857 const Command &FailingCommand) {
858 if (C.getArgs().hasArg(options::OPT_fno_crash_diagnostics))
859 return;
860
861 // Don't try to generate diagnostics for link or dsymutil jobs.
862 if (FailingCommand.getCreator().isLinkJob() ||
863 FailingCommand.getCreator().isDsymutilJob())
864 return;
865
866 // Print the version of the compiler.
867 PrintVersion(C, llvm::errs());
868
869 Diag(clang::diag::note_drv_command_failed_diag_msg)
870 << "PLEASE submit a bug report to " BUG_REPORT_URL"http://llvm.org/bugs/" " and include the "
871 "crash backtrace, preprocessed source, and associated run script.";
872
873 // Suppress driver output and emit preprocessor output to temp file.
874 Mode = CPPMode;
875 CCGenDiagnostics = true;
876
877 // Save the original job command(s).
878 Command Cmd = FailingCommand;
879
880 // Keep track of whether we produce any errors while trying to produce
881 // preprocessed sources.
882 DiagnosticErrorTrap Trap(Diags);
883
884 // Suppress tool output.
885 C.initCompilationForDiagnostics();
886
887 // Construct the list of inputs.
888 InputList Inputs;
889 BuildInputs(C.getDefaultToolChain(), C.getArgs(), Inputs);
890
891 for (InputList::iterator it = Inputs.begin(), ie = Inputs.end(); it != ie;) {
892 bool IgnoreInput = false;
893
894 // Ignore input from stdin or any inputs that cannot be preprocessed.
895 // Check type first as not all linker inputs have a value.
896 if (types::getPreprocessedType(it->first) == types::TY_INVALID) {
897 IgnoreInput = true;
898 } else if (!strcmp(it->second->getValue(), "-")) {
899 Diag(clang::diag::note_drv_command_failed_diag_msg)
900 << "Error generating preprocessed source(s) - "
901 "ignoring input from stdin.";
902 IgnoreInput = true;
903 }
904
905 if (IgnoreInput) {
906 it = Inputs.erase(it);
907 ie = Inputs.end();
908 } else {
909 ++it;
910 }
911 }
912
913 if (Inputs.empty()) {
914 Diag(clang::diag::note_drv_command_failed_diag_msg)
915 << "Error generating preprocessed source(s) - "
916 "no preprocessable inputs.";
917 return;
918 }
919
920 // Don't attempt to generate preprocessed files if multiple -arch options are
921 // used, unless they're all duplicates.
922 llvm::StringSet<> ArchNames;
923 for (const Arg *A : C.getArgs()) {
924 if (A->getOption().matches(options::OPT_arch)) {
925 StringRef ArchName = A->getValue();
926 ArchNames.insert(ArchName);
927 }
928 }
929 if (ArchNames.size() > 1) {
930 Diag(clang::diag::note_drv_command_failed_diag_msg)
931 << "Error generating preprocessed source(s) - cannot generate "
932 "preprocessed source with multiple -arch options.";
933 return;
934 }
935
936 // Construct the list of abstract actions to perform for this compilation. On
937 // Darwin OSes this uses the driver-driver and builds universal actions.
938 const ToolChain &TC = C.getDefaultToolChain();
939 if (TC.getTriple().isOSBinFormatMachO())
940 BuildUniversalActions(C, TC, Inputs);
941 else
942 BuildActions(C, C.getArgs(), Inputs, C.getActions());
943
944 BuildJobs(C);
945
946 // If there were errors building the compilation, quit now.
947 if (Trap.hasErrorOccurred()) {
948 Diag(clang::diag::note_drv_command_failed_diag_msg)
949 << "Error generating preprocessed source(s).";
950 return;
951 }
952
953 // Generate preprocessed output.
954 SmallVector<std::pair<int, const Command *>, 4> FailingCommands;
955 C.ExecuteJobs(C.getJobs(), FailingCommands);
956
957 // If any of the preprocessing commands failed, clean up and exit.
958 if (!FailingCommands.empty()) {
959 if (!isSaveTempsEnabled())
960 C.CleanupFileList(C.getTempFiles(), true);
961
962 Diag(clang::diag::note_drv_command_failed_diag_msg)
963 << "Error generating preprocessed source(s).";
964 return;
965 }
966
967 const ArgStringList &TempFiles = C.getTempFiles();
968 if (TempFiles.empty()) {
969 Diag(clang::diag::note_drv_command_failed_diag_msg)
970 << "Error generating preprocessed source(s).";
971 return;
972 }
973
974 Diag(clang::diag::note_drv_command_failed_diag_msg)
975 << "\n********************\n\n"
976 "PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\n"
977 "Preprocessed source(s) and associated run script(s) are located at:";
978
979 SmallString<128> VFS;
980 SmallString<128> ReproCrashFilename;
981 for (const char *TempFile : TempFiles) {
982 Diag(clang::diag::note_drv_command_failed_diag_msg) << TempFile;
983 if (ReproCrashFilename.empty()) {
984 ReproCrashFilename = TempFile;
985 llvm::sys::path::replace_extension(ReproCrashFilename, ".crash");
986 }
987 if (StringRef(TempFile).endswith(".cache")) {
988 // In some cases (modules) we'll dump extra data to help with reproducing
989 // the crash into a directory next to the output.
990 VFS = llvm::sys::path::filename(TempFile);
991 llvm::sys::path::append(VFS, "vfs", "vfs.yaml");
992 }
993 }
994
995 // Assume associated files are based off of the first temporary file.
996 CrashReportInfo CrashInfo(TempFiles[0], VFS);
997
998 std::string Script = CrashInfo.Filename.rsplit('.').first.str() + ".sh";
999 std::error_code EC;
1000 llvm::raw_fd_ostream ScriptOS(Script, EC, llvm::sys::fs::F_Excl);
1001 if (EC) {
1002 Diag(clang::diag::note_drv_command_failed_diag_msg)
1003 << "Error generating run script: " + Script + " " + EC.message();
1004 } else {
1005 ScriptOS << "# Crash reproducer for " << getClangFullVersion() << "\n"
1006 << "# Driver args: ";
1007 printArgList(ScriptOS, C.getInputArgs());
1008 ScriptOS << "# Original command: ";
1009 Cmd.Print(ScriptOS, "\n", /*Quote=*/true);
1010 Cmd.Print(ScriptOS, "\n", /*Quote=*/true, &CrashInfo);
1011 Diag(clang::diag::note_drv_command_failed_diag_msg) << Script;
1012 }
1013
1014 // On darwin, provide information about the .crash diagnostic report.
1015 if (llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin()) {
1016 SmallString<128> CrashDiagDir;
1017 if (getCrashDiagnosticFile(ReproCrashFilename, CrashDiagDir)) {
1018 Diag(clang::diag::note_drv_command_failed_diag_msg)
1019 << ReproCrashFilename.str();
1020 } else { // Suggest a directory for the user to look for .crash files.
1021 llvm::sys::path::append(CrashDiagDir, Name);
1022 CrashDiagDir += "_<YYYY-MM-DD-HHMMSS>_<hostname>.crash";
1023 Diag(clang::diag::note_drv_command_failed_diag_msg)
1024 << "Crash backtrace is located in";
1025 Diag(clang::diag::note_drv_command_failed_diag_msg)
1026 << CrashDiagDir.str();
1027 Diag(clang::diag::note_drv_command_failed_diag_msg)
1028 << "(choose the .crash file that corresponds to your crash)";
1029 }
1030 }
1031
1032 for (const auto &A : C.getArgs().filtered(options::OPT_frewrite_map_file,
1033 options::OPT_frewrite_map_file_EQ))
1034 Diag(clang::diag::note_drv_command_failed_diag_msg) << A->getValue();
1035
1036 Diag(clang::diag::note_drv_command_failed_diag_msg)
1037 << "\n\n********************";
1038}
1039
1040void Driver::setUpResponseFiles(Compilation &C, Command &Cmd) {
1041 // Since commandLineFitsWithinSystemLimits() may underestimate system's capacity
1042 // if the tool does not support response files, there is a chance/ that things
1043 // will just work without a response file, so we silently just skip it.
1044 if (Cmd.getCreator().getResponseFilesSupport() == Tool::RF_None ||
1045 llvm::sys::commandLineFitsWithinSystemLimits(Cmd.getExecutable(), Cmd.getArguments()))
1046 return;
1047
1048 std::string TmpName = GetTemporaryPath("response", "txt");
1049 Cmd.setResponseFile(C.addTempFile(C.getArgs().MakeArgString(TmpName)));
1050}
1051
1052int Driver::ExecuteCompilation(
1053 Compilation &C,
1054 SmallVectorImpl<std::pair<int, const Command *>> &FailingCommands) {
1055 // Just print if -### was present.
1056 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
1057 C.getJobs().Print(llvm::errs(), "\n", true);
1058 return 0;
1059 }
1060
1061 // If there were errors building the compilation, quit now.
1062 if (Diags.hasErrorOccurred())
1063 return 1;
1064
1065 // Set up response file names for each command, if necessary
1066 for (auto &Job : C.getJobs())
1067 setUpResponseFiles(C, Job);
1068
1069 C.ExecuteJobs(C.getJobs(), FailingCommands);
1070
1071 // Remove temp files.
1072 C.CleanupFileList(C.getTempFiles());
1073
1074 // If the command succeeded, we are done.
1075 if (FailingCommands.empty())
1076 return 0;
1077
1078 // Otherwise, remove result files and print extra information about abnormal
1079 // failures.
1080 for (const auto &CmdPair : FailingCommands) {
1081 int Res = CmdPair.first;
1082 const Command *FailingCommand = CmdPair.second;
1083
1084 // Remove result files if we're not saving temps.
1085 if (!isSaveTempsEnabled()) {
1086 const JobAction *JA = cast<JobAction>(&FailingCommand->getSource());
1087 C.CleanupFileMap(C.getResultFiles(), JA, true);
1088
1089 // Failure result files are valid unless we crashed.
1090 if (Res < 0)
1091 C.CleanupFileMap(C.getFailureResultFiles(), JA, true);
1092 }
1093
1094 // Print extra information about abnormal failures, if possible.
1095 //
1096 // This is ad-hoc, but we don't want to be excessively noisy. If the result
1097 // status was 1, assume the command failed normally. In particular, if it
1098 // was the compiler then assume it gave a reasonable error code. Failures
1099 // in other tools are less common, and they generally have worse
1100 // diagnostics, so always print the diagnostic there.
1101 const Tool &FailingTool = FailingCommand->getCreator();
1102
1103 if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) {
1104 // FIXME: See FIXME above regarding result code interpretation.
1105 if (Res < 0)
1106 Diag(clang::diag::err_drv_command_signalled)
1107 << FailingTool.getShortName();
1108 else
1109 Diag(clang::diag::err_drv_command_failed) << FailingTool.getShortName()
1110 << Res;
1111 }
1112 }
1113 return 0;
1114}
1115
1116void Driver::PrintHelp(bool ShowHidden) const {
1117 unsigned IncludedFlagsBitmask;
1118 unsigned ExcludedFlagsBitmask;
1119 std::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
1120 getIncludeExcludeOptionFlagMasks();
1121
1122 ExcludedFlagsBitmask |= options::NoDriverOption;
1123 if (!ShowHidden)
1124 ExcludedFlagsBitmask |= HelpHidden;
1125
1126 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
1127 IncludedFlagsBitmask, ExcludedFlagsBitmask,
1128 /*ShowAllAliases=*/false);
1129}
1130
1131void Driver::PrintVersion(const Compilation &C, raw_ostream &OS) const {
1132 // FIXME: The following handlers should use a callback mechanism, we don't
1133 // know what the client would like to do.
1134 OS << getClangFullVersion() << '\n';
1135 const ToolChain &TC = C.getDefaultToolChain();
1136 OS << "Target: " << TC.getTripleString() << '\n';
1137
1138 // Print the threading model.
1139 if (Arg *A = C.getArgs().getLastArg(options::OPT_mthread_model)) {
1140 // Don't print if the ToolChain would have barfed on it already
1141 if (TC.isThreadModelSupported(A->getValue()))
1142 OS << "Thread model: " << A->getValue();
1143 } else
1144 OS << "Thread model: " << TC.getThreadModel();
1145 OS << '\n';
1146
1147 // Print out the install directory.
1148 OS << "InstalledDir: " << InstalledDir << '\n';
1149}
1150
1151/// PrintDiagnosticCategories - Implement the --print-diagnostic-categories
1152/// option.
1153static void PrintDiagnosticCategories(raw_ostream &OS) {
1154 // Skip the empty category.
1155 for (unsigned i = 1, max = DiagnosticIDs::getNumberOfCategories(); i != max;
1156 ++i)
1157 OS << i << ',' << DiagnosticIDs::getCategoryNameFromID(i) << '\n';
1158}
1159
1160void Driver::handleAutocompletions(StringRef PassedFlags) const {
1161 // Print out all options that start with a given argument. This is used for
1162 // shell autocompletion.
1163 std::vector<std::string> SuggestedCompletions;
1164
1165 unsigned short DisableFlags =
1166 options::NoDriverOption | options::Unsupported | options::Ignored;
1167 // We want to show cc1-only options only when clang is invoked as "clang
1168 // -cc1". When clang is invoked as "clang -cc1", we add "#" to the beginning
1169 // of an --autocomplete option so that the clang driver can distinguish
1170 // whether it is requested to show cc1-only options or not.
1171 if (PassedFlags.size() > 0 && PassedFlags[0] == '#') {
1172 DisableFlags &= ~options::NoDriverOption;
1173 PassedFlags = PassedFlags.substr(1);
1174 }
1175
1176 if (PassedFlags.find(',') == StringRef::npos) {
1177 // If the flag is in the form of "--autocomplete=-foo",
1178 // we were requested to print out all option names that start with "-foo".
1179 // For example, "--autocomplete=-fsyn" is expanded to "-fsyntax-only".
1180 SuggestedCompletions = Opts->findByPrefix(PassedFlags, DisableFlags);
1181
1182 // We have to query the -W flags manually as they're not in the OptTable.
1183 // TODO: Find a good way to add them to OptTable instead and them remove
1184 // this code.
1185 for (StringRef S : DiagnosticIDs::getDiagnosticFlags())
1186 if (S.startswith(PassedFlags))
1187 SuggestedCompletions.push_back(S);
1188 } else {
1189 // If the flag is in the form of "--autocomplete=foo,bar", we were
1190 // requested to print out all option values for "-foo" that start with
1191 // "bar". For example,
1192 // "--autocomplete=-stdlib=,l" is expanded to "libc++" and "libstdc++".
1193 StringRef Option, Arg;
1194 std::tie(Option, Arg) = PassedFlags.split(',');
1195 SuggestedCompletions = Opts->suggestValueCompletions(Option, Arg);
1196 }
1197
1198 // Sort the autocomplete candidates so that shells print them out in a
1199 // deterministic order. We could sort in any way, but we chose
1200 // case-insensitive sorting for consistency with the -help option
1201 // which prints out options in the case-insensitive alphabetical order.
1202 std::sort(SuggestedCompletions.begin(), SuggestedCompletions.end(),
1203 [](StringRef A, StringRef B) { return A.compare_lower(B) < 0; });
1204
1205 llvm::outs() << llvm::join(SuggestedCompletions, "\n") << '\n';
1206}
1207
1208bool Driver::HandleImmediateArgs(const Compilation &C) {
1209 // The order these options are handled in gcc is all over the place, but we
1210 // don't expect inconsistencies w.r.t. that to matter in practice.
1211
1212 if (C.getArgs().hasArg(options::OPT_dumpmachine)) {
1213 llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n';
1214 return false;
1215 }
1216
1217 if (C.getArgs().hasArg(options::OPT_dumpversion)) {
1218 // Since -dumpversion is only implemented for pedantic GCC compatibility, we
1219 // return an answer which matches our definition of __VERSION__.
1220 //
1221 // If we want to return a more correct answer some day, then we should
1222 // introduce a non-pedantically GCC compatible mode to Clang in which we
1223 // provide sensible definitions for -dumpversion, __VERSION__, etc.
1224 llvm::outs() << "4.2.1\n";
1225 return false;
1226 }
1227
1228 if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) {
1229 PrintDiagnosticCategories(llvm::outs());
1230 return false;
1231 }
1232
1233 if (C.getArgs().hasArg(options::OPT_help) ||
1234 C.getArgs().hasArg(options::OPT__help_hidden)) {
1235 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
1236 return false;
1237 }
1238
1239 if (C.getArgs().hasArg(options::OPT__version)) {
1240 // Follow gcc behavior and use stdout for --version and stderr for -v.
1241 PrintVersion(C, llvm::outs());
1242 return false;
1243 }
1244
1245 if (C.getArgs().hasArg(options::OPT_v) ||
1246 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
1247 PrintVersion(C, llvm::errs());
1248 SuppressMissingInputWarning = true;
1249 }
1250
1251 const ToolChain &TC = C.getDefaultToolChain();
1252
1253 if (C.getArgs().hasArg(options::OPT_v))
1254 TC.printVerboseInfo(llvm::errs());
1255
1256 if (C.getArgs().hasArg(options::OPT_print_resource_dir)) {
1257 llvm::outs() << ResourceDir << '\n';
1258 return false;
1259 }
1260
1261 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
1262 llvm::outs() << "programs: =";
1263 bool separator = false;
1264 for (const std::string &Path : TC.getProgramPaths()) {
1265 if (separator)
1266 llvm::outs() << ':';
1267 llvm::outs() << Path;
1268 separator = true;
1269 }
1270 llvm::outs() << "\n";
1271 llvm::outs() << "libraries: =" << ResourceDir;
1272
1273 StringRef sysroot = C.getSysRoot();
1274
1275 for (const std::string &Path : TC.getFilePaths()) {
1276 // Always print a separator. ResourceDir was the first item shown.
1277 llvm::outs() << ':';
1278 // Interpretation of leading '=' is needed only for NetBSD.
1279 if (Path[0] == '=')
1280 llvm::outs() << sysroot << Path.substr(1);
1281 else
1282 llvm::outs() << Path;
1283 }
1284 llvm::outs() << "\n";
1285 return false;
1286 }
1287
1288 // FIXME: The following handlers should use a callback mechanism, we don't
1289 // know what the client would like to do.
1290 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
1291 llvm::outs() << GetFilePath(A->getValue(), TC) << "\n";
1292 return false;
1293 }
1294
1295 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
1296 llvm::outs() << GetProgramPath(A->getValue(), TC) << "\n";
1297 return false;
1298 }
1299
1300 if (Arg *A = C.getArgs().getLastArg(options::OPT_autocomplete)) {
1301 StringRef PassedFlags = A->getValue();
1302 handleAutocompletions(PassedFlags);
1303 return false;
1304 }
1305
1306 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
1307 ToolChain::RuntimeLibType RLT = TC.GetRuntimeLibType(C.getArgs());
1308 const llvm::Triple Triple(TC.ComputeEffectiveClangTriple(C.getArgs()));
1309 RegisterEffectiveTriple TripleRAII(TC, Triple);
1310 switch (RLT) {
1311 case ToolChain::RLT_CompilerRT:
1312 llvm::outs() << TC.getCompilerRT(C.getArgs(), "builtins") << "\n";
1313 break;
1314 case ToolChain::RLT_Libgcc:
1315 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
1316 break;
1317 }
1318 return false;
1319 }
1320
1321 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
1322 for (const Multilib &Multilib : TC.getMultilibs())
1323 llvm::outs() << Multilib << "\n";
1324 return false;
1325 }
1326
1327 if (C.getArgs().hasArg(options::OPT_print_multi_directory)) {
1328 for (const Multilib &Multilib : TC.getMultilibs()) {
1329 if (Multilib.gccSuffix().empty())
1330 llvm::outs() << ".\n";
1331 else {
1332 StringRef Suffix(Multilib.gccSuffix());
1333 assert(Suffix.front() == '/')((Suffix.front() == '/') ? static_cast<void> (0) : __assert_fail
("Suffix.front() == '/'", "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1333, __PRETTY_FUNCTION__))
;
1334 llvm::outs() << Suffix.substr(1) << "\n";
1335 }
1336 }
1337 return false;
1338 }
1339 return true;
1340}
1341
1342// Display an action graph human-readably. Action A is the "sink" node
1343// and latest-occuring action. Traversal is in pre-order, visiting the
1344// inputs to each action before printing the action itself.
1345static unsigned PrintActions1(const Compilation &C, Action *A,
1346 std::map<Action *, unsigned> &Ids) {
1347 if (Ids.count(A)) // A was already visited.
1348 return Ids[A];
1349
1350 std::string str;
1351 llvm::raw_string_ostream os(str);
1352
1353 os << Action::getClassName(A->getKind()) << ", ";
1354 if (InputAction *IA = dyn_cast<InputAction>(A)) {
1355 os << "\"" << IA->getInputArg().getValue() << "\"";
1356 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
1357 os << '"' << BIA->getArchName() << '"' << ", {"
1358 << PrintActions1(C, *BIA->input_begin(), Ids) << "}";
1359 } else if (OffloadAction *OA = dyn_cast<OffloadAction>(A)) {
1360 bool IsFirst = true;
1361 OA->doOnEachDependence(
1362 [&](Action *A, const ToolChain *TC, const char *BoundArch) {
1363 // E.g. for two CUDA device dependences whose bound arch is sm_20 and
1364 // sm_35 this will generate:
1365 // "cuda-device" (nvptx64-nvidia-cuda:sm_20) {#ID}, "cuda-device"
1366 // (nvptx64-nvidia-cuda:sm_35) {#ID}
1367 if (!IsFirst)
1
Assuming 'IsFirst' is not equal to 0
2
Taking false branch
1368 os << ", ";
1369 os << '"';
1370 if (TC)
3
Assuming 'TC' is null
4
Taking false branch
1371 os << A->getOffloadingKindPrefix();
1372 else
1373 os << "host";
1374 os << " (";
1375 os << TC->getTriple().normalize();
5
Called C++ object pointer is null
1376
1377 if (BoundArch)
1378 os << ":" << BoundArch;
1379 os << ")";
1380 os << '"';
1381 os << " {" << PrintActions1(C, A, Ids) << "}";
1382 IsFirst = false;
1383 });
1384 } else {
1385 const ActionList *AL = &A->getInputs();
1386
1387 if (AL->size()) {
1388 const char *Prefix = "{";
1389 for (Action *PreRequisite : *AL) {
1390 os << Prefix << PrintActions1(C, PreRequisite, Ids);
1391 Prefix = ", ";
1392 }
1393 os << "}";
1394 } else
1395 os << "{}";
1396 }
1397
1398 // Append offload info for all options other than the offloading action
1399 // itself (e.g. (cuda-device, sm_20) or (cuda-host)).
1400 std::string offload_str;
1401 llvm::raw_string_ostream offload_os(offload_str);
1402 if (!isa<OffloadAction>(A)) {
1403 auto S = A->getOffloadingKindPrefix();
1404 if (!S.empty()) {
1405 offload_os << ", (" << S;
1406 if (A->getOffloadingArch())
1407 offload_os << ", " << A->getOffloadingArch();
1408 offload_os << ")";
1409 }
1410 }
1411
1412 unsigned Id = Ids.size();
1413 Ids[A] = Id;
1414 llvm::errs() << Id << ": " << os.str() << ", "
1415 << types::getTypeName(A->getType()) << offload_os.str() << "\n";
1416
1417 return Id;
1418}
1419
1420// Print the action graphs in a compilation C.
1421// For example "clang -c file1.c file2.c" is composed of two subgraphs.
1422void Driver::PrintActions(const Compilation &C) const {
1423 std::map<Action *, unsigned> Ids;
1424 for (Action *A : C.getActions())
1425 PrintActions1(C, A, Ids);
1426}
1427
1428/// \brief Check whether the given input tree contains any compilation or
1429/// assembly actions.
1430static bool ContainsCompileOrAssembleAction(const Action *A) {
1431 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A) ||
1432 isa<AssembleJobAction>(A))
1433 return true;
1434
1435 for (const Action *Input : A->inputs())
1436 if (ContainsCompileOrAssembleAction(Input))
1437 return true;
1438
1439 return false;
1440}
1441
1442void Driver::BuildUniversalActions(Compilation &C, const ToolChain &TC,
1443 const InputList &BAInputs) const {
1444 DerivedArgList &Args = C.getArgs();
1445 ActionList &Actions = C.getActions();
1446 llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
1447 // Collect the list of architectures. Duplicates are allowed, but should only
1448 // be handled once (in the order seen).
1449 llvm::StringSet<> ArchNames;
1450 SmallVector<const char *, 4> Archs;
1451 for (Arg *A : Args) {
1452 if (A->getOption().matches(options::OPT_arch)) {
1453 // Validate the option here; we don't save the type here because its
1454 // particular spelling may participate in other driver choices.
1455 llvm::Triple::ArchType Arch =
1456 tools::darwin::getArchTypeForMachOArchName(A->getValue());
1457 if (Arch == llvm::Triple::UnknownArch) {
1458 Diag(clang::diag::err_drv_invalid_arch_name) << A->getAsString(Args);
1459 continue;
1460 }
1461
1462 A->claim();
1463 if (ArchNames.insert(A->getValue()).second)
1464 Archs.push_back(A->getValue());
1465 }
1466 }
1467
1468 // When there is no explicit arch for this platform, make sure we still bind
1469 // the architecture (to the default) so that -Xarch_ is handled correctly.
1470 if (!Archs.size())
1471 Archs.push_back(Args.MakeArgString(TC.getDefaultUniversalArchName()));
1472
1473 ActionList SingleActions;
1474 BuildActions(C, Args, BAInputs, SingleActions);
1475
1476 // Add in arch bindings for every top level action, as well as lipo and
1477 // dsymutil steps if needed.
1478 for (Action* Act : SingleActions) {
1479 // Make sure we can lipo this kind of output. If not (and it is an actual
1480 // output) then we disallow, since we can't create an output file with the
1481 // right name without overwriting it. We could remove this oddity by just
1482 // changing the output names to include the arch, which would also fix
1483 // -save-temps. Compatibility wins for now.
1484
1485 if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
1486 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
1487 << types::getTypeName(Act->getType());
1488
1489 ActionList Inputs;
1490 for (unsigned i = 0, e = Archs.size(); i != e; ++i)
1491 Inputs.push_back(C.MakeAction<BindArchAction>(Act, Archs[i]));
1492
1493 // Lipo if necessary, we do it this way because we need to set the arch flag
1494 // so that -Xarch_ gets overwritten.
1495 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
1496 Actions.append(Inputs.begin(), Inputs.end());
1497 else
1498 Actions.push_back(C.MakeAction<LipoJobAction>(Inputs, Act->getType()));
1499
1500 // Handle debug info queries.
1501 Arg *A = Args.getLastArg(options::OPT_g_Group);
1502 if (A && !A->getOption().matches(options::OPT_g0) &&
1503 !A->getOption().matches(options::OPT_gstabs) &&
1504 ContainsCompileOrAssembleAction(Actions.back())) {
1505
1506 // Add a 'dsymutil' step if necessary, when debug info is enabled and we
1507 // have a compile input. We need to run 'dsymutil' ourselves in such cases
1508 // because the debug info will refer to a temporary object file which
1509 // will be removed at the end of the compilation process.
1510 if (Act->getType() == types::TY_Image) {
1511 ActionList Inputs;
1512 Inputs.push_back(Actions.back());
1513 Actions.pop_back();
1514 Actions.push_back(
1515 C.MakeAction<DsymutilJobAction>(Inputs, types::TY_dSYM));
1516 }
1517
1518 // Verify the debug info output.
1519 if (Args.hasArg(options::OPT_verify_debug_info)) {
1520 Action* LastAction = Actions.back();
1521 Actions.pop_back();
1522 Actions.push_back(C.MakeAction<VerifyDebugInfoJobAction>(
1523 LastAction, types::TY_Nothing));
1524 }
1525 }
1526 }
1527}
1528
1529/// \brief Check that the file referenced by Value exists. If it doesn't,
1530/// issue a diagnostic and return false.
1531static bool DiagnoseInputExistence(const Driver &D, const DerivedArgList &Args,
1532 StringRef Value, types::ID Ty) {
1533 if (!D.getCheckInputsExist())
1534 return true;
1535
1536 // stdin always exists.
1537 if (Value == "-")
1538 return true;
1539
1540 SmallString<64> Path(Value);
1541 if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory)) {
1542 if (!llvm::sys::path::is_absolute(Path)) {
1543 SmallString<64> Directory(WorkDir->getValue());
1544 llvm::sys::path::append(Directory, Value);
1545 Path.assign(Directory);
1546 }
1547 }
1548
1549 if (llvm::sys::fs::exists(Twine(Path)))
1550 return true;
1551
1552 if (D.IsCLMode()) {
1553 if (!llvm::sys::path::is_absolute(Twine(Path)) &&
1554 llvm::sys::Process::FindInEnvPath("LIB", Value))
1555 return true;
1556
1557 if (Args.hasArg(options::OPT__SLASH_link) && Ty == types::TY_Object) {
1558 // Arguments to the /link flag might cause the linker to search for object
1559 // and library files in paths we don't know about. Don't error in such
1560 // cases.
1561 return true;
1562 }
1563 }
1564
1565 D.Diag(clang::diag::err_drv_no_such_file) << Path;
1566 return false;
1567}
1568
1569// Construct a the list of inputs and their types.
1570void Driver::BuildInputs(const ToolChain &TC, DerivedArgList &Args,
1571 InputList &Inputs) const {
1572 // Track the current user specified (-x) input. We also explicitly track the
1573 // argument used to set the type; we only want to claim the type when we
1574 // actually use it, so we warn about unused -x arguments.
1575 types::ID InputType = types::TY_Nothing;
1576 Arg *InputTypeArg = nullptr;
1577
1578 // The last /TC or /TP option sets the input type to C or C++ globally.
1579 if (Arg *TCTP = Args.getLastArgNoClaim(options::OPT__SLASH_TC,
1580 options::OPT__SLASH_TP)) {
1581 InputTypeArg = TCTP;
1582 InputType = TCTP->getOption().matches(options::OPT__SLASH_TC)
1583 ? types::TY_C
1584 : types::TY_CXX;
1585
1586 Arg *Previous = nullptr;
1587 bool ShowNote = false;
1588 for (Arg *A : Args.filtered(options::OPT__SLASH_TC, options::OPT__SLASH_TP)) {
1589 if (Previous) {
1590 Diag(clang::diag::warn_drv_overriding_flag_option)
1591 << Previous->getSpelling() << A->getSpelling();
1592 ShowNote = true;
1593 }
1594 Previous = A;
1595 }
1596 if (ShowNote)
1597 Diag(clang::diag::note_drv_t_option_is_global);
1598
1599 // No driver mode exposes -x and /TC or /TP; we don't support mixing them.
1600 assert(!Args.hasArg(options::OPT_x) && "-x and /TC or /TP is not allowed")((!Args.hasArg(options::OPT_x) && "-x and /TC or /TP is not allowed"
) ? static_cast<void> (0) : __assert_fail ("!Args.hasArg(options::OPT_x) && \"-x and /TC or /TP is not allowed\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1600, __PRETTY_FUNCTION__))
;
1601 }
1602
1603 for (Arg *A : Args) {
1604 if (A->getOption().getKind() == Option::InputClass) {
1605 const char *Value = A->getValue();
1606 types::ID Ty = types::TY_INVALID;
1607
1608 // Infer the input type if necessary.
1609 if (InputType == types::TY_Nothing) {
1610 // If there was an explicit arg for this, claim it.
1611 if (InputTypeArg)
1612 InputTypeArg->claim();
1613
1614 // stdin must be handled specially.
1615 if (memcmp(Value, "-", 2) == 0) {
1616 // If running with -E, treat as a C input (this changes the builtin
1617 // macros, for example). This may be overridden by -ObjC below.
1618 //
1619 // Otherwise emit an error but still use a valid type to avoid
1620 // spurious errors (e.g., no inputs).
1621 if (!Args.hasArgNoClaim(options::OPT_E) && !CCCIsCPP())
1622 Diag(IsCLMode() ? clang::diag::err_drv_unknown_stdin_type_clang_cl
1623 : clang::diag::err_drv_unknown_stdin_type);
1624 Ty = types::TY_C;
1625 } else {
1626 // Otherwise lookup by extension.
1627 // Fallback is C if invoked as C preprocessor or Object otherwise.
1628 // We use a host hook here because Darwin at least has its own
1629 // idea of what .s is.
1630 if (const char *Ext = strrchr(Value, '.'))
1631 Ty = TC.LookupTypeForExtension(Ext + 1);
1632
1633 if (Ty == types::TY_INVALID) {
1634 if (CCCIsCPP())
1635 Ty = types::TY_C;
1636 else
1637 Ty = types::TY_Object;
1638 }
1639
1640 // If the driver is invoked as C++ compiler (like clang++ or c++) it
1641 // should autodetect some input files as C++ for g++ compatibility.
1642 if (CCCIsCXX()) {
1643 types::ID OldTy = Ty;
1644 Ty = types::lookupCXXTypeForCType(Ty);
1645
1646 if (Ty != OldTy)
1647 Diag(clang::diag::warn_drv_treating_input_as_cxx)
1648 << getTypeName(OldTy) << getTypeName(Ty);
1649 }
1650 }
1651
1652 // -ObjC and -ObjC++ override the default language, but only for "source
1653 // files". We just treat everything that isn't a linker input as a
1654 // source file.
1655 //
1656 // FIXME: Clean this up if we move the phase sequence into the type.
1657 if (Ty != types::TY_Object) {
1658 if (Args.hasArg(options::OPT_ObjC))
1659 Ty = types::TY_ObjC;
1660 else if (Args.hasArg(options::OPT_ObjCXX))
1661 Ty = types::TY_ObjCXX;
1662 }
1663 } else {
1664 assert(InputTypeArg && "InputType set w/o InputTypeArg")((InputTypeArg && "InputType set w/o InputTypeArg") ?
static_cast<void> (0) : __assert_fail ("InputTypeArg && \"InputType set w/o InputTypeArg\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1664, __PRETTY_FUNCTION__))
;
1665 if (!InputTypeArg->getOption().matches(options::OPT_x)) {
1666 // If emulating cl.exe, make sure that /TC and /TP don't affect input
1667 // object files.
1668 const char *Ext = strrchr(Value, '.');
1669 if (Ext && TC.LookupTypeForExtension(Ext + 1) == types::TY_Object)
1670 Ty = types::TY_Object;
1671 }
1672 if (Ty == types::TY_INVALID) {
1673 Ty = InputType;
1674 InputTypeArg->claim();
1675 }
1676 }
1677
1678 if (DiagnoseInputExistence(*this, Args, Value, Ty))
1679 Inputs.push_back(std::make_pair(Ty, A));
1680
1681 } else if (A->getOption().matches(options::OPT__SLASH_Tc)) {
1682 StringRef Value = A->getValue();
1683 if (DiagnoseInputExistence(*this, Args, Value, types::TY_C)) {
1684 Arg *InputArg = MakeInputArg(Args, *Opts, A->getValue());
1685 Inputs.push_back(std::make_pair(types::TY_C, InputArg));
1686 }
1687 A->claim();
1688 } else if (A->getOption().matches(options::OPT__SLASH_Tp)) {
1689 StringRef Value = A->getValue();
1690 if (DiagnoseInputExistence(*this, Args, Value, types::TY_CXX)) {
1691 Arg *InputArg = MakeInputArg(Args, *Opts, A->getValue());
1692 Inputs.push_back(std::make_pair(types::TY_CXX, InputArg));
1693 }
1694 A->claim();
1695 } else if (A->getOption().hasFlag(options::LinkerInput)) {
1696 // Just treat as object type, we could make a special type for this if
1697 // necessary.
1698 Inputs.push_back(std::make_pair(types::TY_Object, A));
1699
1700 } else if (A->getOption().matches(options::OPT_x)) {
1701 InputTypeArg = A;
1702 InputType = types::lookupTypeForTypeSpecifier(A->getValue());
1703 A->claim();
1704
1705 // Follow gcc behavior and treat as linker input for invalid -x
1706 // options. Its not clear why we shouldn't just revert to unknown; but
1707 // this isn't very important, we might as well be bug compatible.
1708 if (!InputType) {
1709 Diag(clang::diag::err_drv_unknown_language) << A->getValue();
1710 InputType = types::TY_Object;
1711 }
1712 } else if (A->getOption().getID() == options::OPT__SLASH_U) {
1713 assert(A->getNumValues() == 1 && "The /U option has one value.")((A->getNumValues() == 1 && "The /U option has one value."
) ? static_cast<void> (0) : __assert_fail ("A->getNumValues() == 1 && \"The /U option has one value.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1713, __PRETTY_FUNCTION__))
;
1714 StringRef Val = A->getValue(0);
1715 if (Val.find_first_of("/\\") != StringRef::npos) {
1716 // Warn about e.g. "/Users/me/myfile.c".
1717 Diag(diag::warn_slash_u_filename) << Val;
1718 Diag(diag::note_use_dashdash);
1719 }
1720 }
1721 }
1722 if (CCCIsCPP() && Inputs.empty()) {
1723 // If called as standalone preprocessor, stdin is processed
1724 // if no other input is present.
1725 Arg *A = MakeInputArg(Args, *Opts, "-");
1726 Inputs.push_back(std::make_pair(types::TY_C, A));
1727 }
1728}
1729
1730namespace {
1731/// Provides a convenient interface for different programming models to generate
1732/// the required device actions.
1733class OffloadingActionBuilder final {
1734 /// Flag used to trace errors in the builder.
1735 bool IsValid = false;
1736
1737 /// The compilation that is using this builder.
1738 Compilation &C;
1739
1740 /// Map between an input argument and the offload kinds used to process it.
1741 std::map<const Arg *, unsigned> InputArgToOffloadKindMap;
1742
1743 /// Builder interface. It doesn't build anything or keep any state.
1744 class DeviceActionBuilder {
1745 public:
1746 typedef llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> PhasesTy;
1747
1748 enum ActionBuilderReturnCode {
1749 // The builder acted successfully on the current action.
1750 ABRT_Success,
1751 // The builder didn't have to act on the current action.
1752 ABRT_Inactive,
1753 // The builder was successful and requested the host action to not be
1754 // generated.
1755 ABRT_Ignore_Host,
1756 };
1757
1758 protected:
1759 /// Compilation associated with this builder.
1760 Compilation &C;
1761
1762 /// Tool chains associated with this builder. The same programming
1763 /// model may have associated one or more tool chains.
1764 SmallVector<const ToolChain *, 2> ToolChains;
1765
1766 /// The derived arguments associated with this builder.
1767 DerivedArgList &Args;
1768
1769 /// The inputs associated with this builder.
1770 const Driver::InputList &Inputs;
1771
1772 /// The associated offload kind.
1773 Action::OffloadKind AssociatedOffloadKind = Action::OFK_None;
1774
1775 public:
1776 DeviceActionBuilder(Compilation &C, DerivedArgList &Args,
1777 const Driver::InputList &Inputs,
1778 Action::OffloadKind AssociatedOffloadKind)
1779 : C(C), Args(Args), Inputs(Inputs),
1780 AssociatedOffloadKind(AssociatedOffloadKind) {}
1781 virtual ~DeviceActionBuilder() {}
1782
1783 /// Fill up the array \a DA with all the device dependences that should be
1784 /// added to the provided host action \a HostAction. By default it is
1785 /// inactive.
1786 virtual ActionBuilderReturnCode
1787 getDeviceDependences(OffloadAction::DeviceDependences &DA,
1788 phases::ID CurPhase, phases::ID FinalPhase,
1789 PhasesTy &Phases) {
1790 return ABRT_Inactive;
1791 }
1792
1793 /// Update the state to include the provided host action \a HostAction as a
1794 /// dependency of the current device action. By default it is inactive.
1795 virtual ActionBuilderReturnCode addDeviceDepences(Action *HostAction) {
1796 return ABRT_Inactive;
1797 }
1798
1799 /// Append top level actions generated by the builder. Return true if errors
1800 /// were found.
1801 virtual void appendTopLevelActions(ActionList &AL) {}
1802
1803 /// Append linker actions generated by the builder. Return true if errors
1804 /// were found.
1805 virtual void appendLinkDependences(OffloadAction::DeviceDependences &DA) {}
1806
1807 /// Initialize the builder. Return true if any initialization errors are
1808 /// found.
1809 virtual bool initialize() { return false; }
1810
1811 /// Return true if the builder can use bundling/unbundling.
1812 virtual bool canUseBundlerUnbundler() const { return false; }
1813
1814 /// Return true if this builder is valid. We have a valid builder if we have
1815 /// associated device tool chains.
1816 bool isValid() { return !ToolChains.empty(); }
1817
1818 /// Return the associated offload kind.
1819 Action::OffloadKind getAssociatedOffloadKind() {
1820 return AssociatedOffloadKind;
1821 }
1822 };
1823
1824 /// \brief CUDA action builder. It injects device code in the host backend
1825 /// action.
1826 class CudaActionBuilder final : public DeviceActionBuilder {
1827 /// Flags to signal if the user requested host-only or device-only
1828 /// compilation.
1829 bool CompileHostOnly = false;
1830 bool CompileDeviceOnly = false;
1831
1832 /// List of GPU architectures to use in this compilation.
1833 SmallVector<CudaArch, 4> GpuArchList;
1834
1835 /// The CUDA actions for the current input.
1836 ActionList CudaDeviceActions;
1837
1838 /// The CUDA fat binary if it was generated for the current input.
1839 Action *CudaFatBinary = nullptr;
1840
1841 /// Flag that is set to true if this builder acted on the current input.
1842 bool IsActive = false;
1843
1844 public:
1845 CudaActionBuilder(Compilation &C, DerivedArgList &Args,
1846 const Driver::InputList &Inputs)
1847 : DeviceActionBuilder(C, Args, Inputs, Action::OFK_Cuda) {}
1848
1849 ActionBuilderReturnCode
1850 getDeviceDependences(OffloadAction::DeviceDependences &DA,
1851 phases::ID CurPhase, phases::ID FinalPhase,
1852 PhasesTy &Phases) override {
1853 if (!IsActive)
1854 return ABRT_Inactive;
1855
1856 // If we don't have more CUDA actions, we don't have any dependences to
1857 // create for the host.
1858 if (CudaDeviceActions.empty())
1859 return ABRT_Success;
1860
1861 assert(CudaDeviceActions.size() == GpuArchList.size() &&((CudaDeviceActions.size() == GpuArchList.size() && "Expecting one action per GPU architecture."
) ? static_cast<void> (0) : __assert_fail ("CudaDeviceActions.size() == GpuArchList.size() && \"Expecting one action per GPU architecture.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1862, __PRETTY_FUNCTION__))
1862 "Expecting one action per GPU architecture.")((CudaDeviceActions.size() == GpuArchList.size() && "Expecting one action per GPU architecture."
) ? static_cast<void> (0) : __assert_fail ("CudaDeviceActions.size() == GpuArchList.size() && \"Expecting one action per GPU architecture.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1862, __PRETTY_FUNCTION__))
;
1863 assert(!CompileHostOnly &&((!CompileHostOnly && "Not expecting CUDA actions in host-only compilation."
) ? static_cast<void> (0) : __assert_fail ("!CompileHostOnly && \"Not expecting CUDA actions in host-only compilation.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1864, __PRETTY_FUNCTION__))
1864 "Not expecting CUDA actions in host-only compilation.")((!CompileHostOnly && "Not expecting CUDA actions in host-only compilation."
) ? static_cast<void> (0) : __assert_fail ("!CompileHostOnly && \"Not expecting CUDA actions in host-only compilation.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1864, __PRETTY_FUNCTION__))
;
1865
1866 // If we are generating code for the device or we are in a backend phase,
1867 // we attempt to generate the fat binary. We compile each arch to ptx and
1868 // assemble to cubin, then feed the cubin *and* the ptx into a device
1869 // "link" action, which uses fatbinary to combine these cubins into one
1870 // fatbin. The fatbin is then an input to the host action if not in
1871 // device-only mode.
1872 if (CompileDeviceOnly || CurPhase == phases::Backend) {
1873 ActionList DeviceActions;
1874 for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I) {
1875 // Produce the device action from the current phase up to the assemble
1876 // phase.
1877 for (auto Ph : Phases) {
1878 // Skip the phases that were already dealt with.
1879 if (Ph < CurPhase)
1880 continue;
1881 // We have to be consistent with the host final phase.
1882 if (Ph > FinalPhase)
1883 break;
1884
1885 CudaDeviceActions[I] = C.getDriver().ConstructPhaseAction(
1886 C, Args, Ph, CudaDeviceActions[I]);
1887
1888 if (Ph == phases::Assemble)
1889 break;
1890 }
1891
1892 // If we didn't reach the assemble phase, we can't generate the fat
1893 // binary. We don't need to generate the fat binary if we are not in
1894 // device-only mode.
1895 if (!isa<AssembleJobAction>(CudaDeviceActions[I]) ||
1896 CompileDeviceOnly)
1897 continue;
1898
1899 Action *AssembleAction = CudaDeviceActions[I];
1900 assert(AssembleAction->getType() == types::TY_Object)((AssembleAction->getType() == types::TY_Object) ? static_cast
<void> (0) : __assert_fail ("AssembleAction->getType() == types::TY_Object"
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1900, __PRETTY_FUNCTION__))
;
1901 assert(AssembleAction->getInputs().size() == 1)((AssembleAction->getInputs().size() == 1) ? static_cast<
void> (0) : __assert_fail ("AssembleAction->getInputs().size() == 1"
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1901, __PRETTY_FUNCTION__))
;
1902
1903 Action *BackendAction = AssembleAction->getInputs()[0];
1904 assert(BackendAction->getType() == types::TY_PP_Asm)((BackendAction->getType() == types::TY_PP_Asm) ? static_cast
<void> (0) : __assert_fail ("BackendAction->getType() == types::TY_PP_Asm"
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1904, __PRETTY_FUNCTION__))
;
1905
1906 for (auto &A : {AssembleAction, BackendAction}) {
1907 OffloadAction::DeviceDependences DDep;
1908 DDep.add(*A, *ToolChains.front(), CudaArchToString(GpuArchList[I]),
1909 Action::OFK_Cuda);
1910 DeviceActions.push_back(
1911 C.MakeAction<OffloadAction>(DDep, A->getType()));
1912 }
1913 }
1914
1915 // We generate the fat binary if we have device input actions.
1916 if (!DeviceActions.empty()) {
1917 CudaFatBinary =
1918 C.MakeAction<LinkJobAction>(DeviceActions, types::TY_CUDA_FATBIN);
1919
1920 if (!CompileDeviceOnly) {
1921 DA.add(*CudaFatBinary, *ToolChains.front(), /*BoundArch=*/nullptr,
1922 Action::OFK_Cuda);
1923 // Clear the fat binary, it is already a dependence to an host
1924 // action.
1925 CudaFatBinary = nullptr;
1926 }
1927
1928 // Remove the CUDA actions as they are already connected to an host
1929 // action or fat binary.
1930 CudaDeviceActions.clear();
1931 }
1932
1933 // We avoid creating host action in device-only mode.
1934 return CompileDeviceOnly ? ABRT_Ignore_Host : ABRT_Success;
1935 } else if (CurPhase > phases::Backend) {
1936 // If we are past the backend phase and still have a device action, we
1937 // don't have to do anything as this action is already a device
1938 // top-level action.
1939 return ABRT_Success;
1940 }
1941
1942 assert(CurPhase < phases::Backend && "Generating single CUDA "((CurPhase < phases::Backend && "Generating single CUDA "
"instructions should only occur " "before the backend phase!"
) ? static_cast<void> (0) : __assert_fail ("CurPhase < phases::Backend && \"Generating single CUDA \" \"instructions should only occur \" \"before the backend phase!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1944, __PRETTY_FUNCTION__))
1943 "instructions should only occur "((CurPhase < phases::Backend && "Generating single CUDA "
"instructions should only occur " "before the backend phase!"
) ? static_cast<void> (0) : __assert_fail ("CurPhase < phases::Backend && \"Generating single CUDA \" \"instructions should only occur \" \"before the backend phase!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1944, __PRETTY_FUNCTION__))
1944 "before the backend phase!")((CurPhase < phases::Backend && "Generating single CUDA "
"instructions should only occur " "before the backend phase!"
) ? static_cast<void> (0) : __assert_fail ("CurPhase < phases::Backend && \"Generating single CUDA \" \"instructions should only occur \" \"before the backend phase!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1944, __PRETTY_FUNCTION__))
;
1945
1946 // By default, we produce an action for each device arch.
1947 for (Action *&A : CudaDeviceActions)
1948 A = C.getDriver().ConstructPhaseAction(C, Args, CurPhase, A);
1949
1950 return ABRT_Success;
1951 }
1952
1953 ActionBuilderReturnCode addDeviceDepences(Action *HostAction) override {
1954 // While generating code for CUDA, we only depend on the host input action
1955 // to trigger the creation of all the CUDA device actions.
1956
1957 // If we are dealing with an input action, replicate it for each GPU
1958 // architecture. If we are in host-only mode we return 'success' so that
1959 // the host uses the CUDA offload kind.
1960 if (auto *IA = dyn_cast<InputAction>(HostAction)) {
1961 assert(!GpuArchList.empty() &&((!GpuArchList.empty() && "We should have at least one GPU architecture."
) ? static_cast<void> (0) : __assert_fail ("!GpuArchList.empty() && \"We should have at least one GPU architecture.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1962, __PRETTY_FUNCTION__))
1962 "We should have at least one GPU architecture.")((!GpuArchList.empty() && "We should have at least one GPU architecture."
) ? static_cast<void> (0) : __assert_fail ("!GpuArchList.empty() && \"We should have at least one GPU architecture.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 1962, __PRETTY_FUNCTION__))
;
1963
1964 // If the host input is not CUDA, we don't need to bother about this
1965 // input.
1966 if (IA->getType() != types::TY_CUDA) {
1967 // The builder will ignore this input.
1968 IsActive = false;
1969 return ABRT_Inactive;
1970 }
1971
1972 // Set the flag to true, so that the builder acts on the current input.
1973 IsActive = true;
1974
1975 if (CompileHostOnly)
1976 return ABRT_Success;
1977
1978 // Replicate inputs for each GPU architecture.
1979 for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
1980 CudaDeviceActions.push_back(C.MakeAction<InputAction>(
1981 IA->getInputArg(), types::TY_CUDA_DEVICE));
1982
1983 return ABRT_Success;
1984 }
1985
1986 return IsActive ? ABRT_Success : ABRT_Inactive;
1987 }
1988
1989 void appendTopLevelActions(ActionList &AL) override {
1990 // Utility to append actions to the top level list.
1991 auto AddTopLevel = [&](Action *A, CudaArch BoundArch) {
1992 OffloadAction::DeviceDependences Dep;
1993 Dep.add(*A, *ToolChains.front(), CudaArchToString(BoundArch),
1994 Action::OFK_Cuda);
1995 AL.push_back(C.MakeAction<OffloadAction>(Dep, A->getType()));
1996 };
1997
1998 // If we have a fat binary, add it to the list.
1999 if (CudaFatBinary) {
2000 AddTopLevel(CudaFatBinary, CudaArch::UNKNOWN);
2001 CudaDeviceActions.clear();
2002 CudaFatBinary = nullptr;
2003 return;
2004 }
2005
2006 if (CudaDeviceActions.empty())
2007 return;
2008
2009 // If we have CUDA actions at this point, that's because we have a have
2010 // partial compilation, so we should have an action for each GPU
2011 // architecture.
2012 assert(CudaDeviceActions.size() == GpuArchList.size() &&((CudaDeviceActions.size() == GpuArchList.size() && "Expecting one action per GPU architecture."
) ? static_cast<void> (0) : __assert_fail ("CudaDeviceActions.size() == GpuArchList.size() && \"Expecting one action per GPU architecture.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2013, __PRETTY_FUNCTION__))
2013 "Expecting one action per GPU architecture.")((CudaDeviceActions.size() == GpuArchList.size() && "Expecting one action per GPU architecture."
) ? static_cast<void> (0) : __assert_fail ("CudaDeviceActions.size() == GpuArchList.size() && \"Expecting one action per GPU architecture.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2013, __PRETTY_FUNCTION__))
;
2014 assert(ToolChains.size() == 1 &&((ToolChains.size() == 1 && "Expecting to have a sing CUDA toolchain."
) ? static_cast<void> (0) : __assert_fail ("ToolChains.size() == 1 && \"Expecting to have a sing CUDA toolchain.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2015, __PRETTY_FUNCTION__))
2015 "Expecting to have a sing CUDA toolchain.")((ToolChains.size() == 1 && "Expecting to have a sing CUDA toolchain."
) ? static_cast<void> (0) : __assert_fail ("ToolChains.size() == 1 && \"Expecting to have a sing CUDA toolchain.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2015, __PRETTY_FUNCTION__))
;
2016 for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
2017 AddTopLevel(CudaDeviceActions[I], GpuArchList[I]);
2018
2019 CudaDeviceActions.clear();
2020 }
2021
2022 bool initialize() override {
2023 // We don't need to support CUDA.
2024 if (!C.hasOffloadToolChain<Action::OFK_Cuda>())
2025 return false;
2026
2027 const ToolChain *HostTC = C.getSingleOffloadToolChain<Action::OFK_Host>();
2028 assert(HostTC && "No toolchain for host compilation.")((HostTC && "No toolchain for host compilation.") ? static_cast
<void> (0) : __assert_fail ("HostTC && \"No toolchain for host compilation.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2028, __PRETTY_FUNCTION__))
;
2029 if (HostTC->getTriple().isNVPTX()) {
2030 // We do not support targeting NVPTX for host compilation. Throw
2031 // an error and abort pipeline construction early so we don't trip
2032 // asserts that assume device-side compilation.
2033 C.getDriver().Diag(diag::err_drv_cuda_nvptx_host);
2034 return true;
2035 }
2036
2037 ToolChains.push_back(C.getSingleOffloadToolChain<Action::OFK_Cuda>());
2038
2039 Arg *PartialCompilationArg = Args.getLastArg(
2040 options::OPT_cuda_host_only, options::OPT_cuda_device_only,
2041 options::OPT_cuda_compile_host_device);
2042 CompileHostOnly = PartialCompilationArg &&
2043 PartialCompilationArg->getOption().matches(
2044 options::OPT_cuda_host_only);
2045 CompileDeviceOnly = PartialCompilationArg &&
2046 PartialCompilationArg->getOption().matches(
2047 options::OPT_cuda_device_only);
2048
2049 // Collect all cuda_gpu_arch parameters, removing duplicates.
2050 std::set<CudaArch> GpuArchs;
2051 bool Error = false;
2052 for (Arg *A : Args) {
2053 if (!(A->getOption().matches(options::OPT_cuda_gpu_arch_EQ) ||
2054 A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ)))
2055 continue;
2056 A->claim();
2057
2058 const StringRef ArchStr = A->getValue();
2059 if (A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ) &&
2060 ArchStr == "all") {
2061 GpuArchs.clear();
2062 continue;
2063 }
2064 CudaArch Arch = StringToCudaArch(ArchStr);
2065 if (Arch == CudaArch::UNKNOWN) {
2066 C.getDriver().Diag(clang::diag::err_drv_cuda_bad_gpu_arch) << ArchStr;
2067 Error = true;
2068 } else if (A->getOption().matches(options::OPT_cuda_gpu_arch_EQ))
2069 GpuArchs.insert(Arch);
2070 else if (A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ))
2071 GpuArchs.erase(Arch);
2072 else
2073 llvm_unreachable("Unexpected option.")::llvm::llvm_unreachable_internal("Unexpected option.", "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2073)
;
2074 }
2075
2076 // Collect list of GPUs remaining in the set.
2077 for (CudaArch Arch : GpuArchs)
2078 GpuArchList.push_back(Arch);
2079
2080 // Default to sm_20 which is the lowest common denominator for
2081 // supported GPUs. sm_20 code should work correctly, if
2082 // suboptimally, on all newer GPUs.
2083 if (GpuArchList.empty())
2084 GpuArchList.push_back(CudaArch::SM_20);
2085
2086 return Error;
2087 }
2088 };
2089
2090 /// OpenMP action builder. The host bitcode is passed to the device frontend
2091 /// and all the device linked images are passed to the host link phase.
2092 class OpenMPActionBuilder final : public DeviceActionBuilder {
2093 /// The OpenMP actions for the current input.
2094 ActionList OpenMPDeviceActions;
2095
2096 /// The linker inputs obtained for each toolchain.
2097 SmallVector<ActionList, 8> DeviceLinkerInputs;
2098
2099 public:
2100 OpenMPActionBuilder(Compilation &C, DerivedArgList &Args,
2101 const Driver::InputList &Inputs)
2102 : DeviceActionBuilder(C, Args, Inputs, Action::OFK_OpenMP) {}
2103
2104 ActionBuilderReturnCode
2105 getDeviceDependences(OffloadAction::DeviceDependences &DA,
2106 phases::ID CurPhase, phases::ID FinalPhase,
2107 PhasesTy &Phases) override {
2108
2109 // We should always have an action for each input.
2110 assert(OpenMPDeviceActions.size() == ToolChains.size() &&((OpenMPDeviceActions.size() == ToolChains.size() && "Number of OpenMP actions and toolchains do not match."
) ? static_cast<void> (0) : __assert_fail ("OpenMPDeviceActions.size() == ToolChains.size() && \"Number of OpenMP actions and toolchains do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2111, __PRETTY_FUNCTION__))
2111 "Number of OpenMP actions and toolchains do not match.")((OpenMPDeviceActions.size() == ToolChains.size() && "Number of OpenMP actions and toolchains do not match."
) ? static_cast<void> (0) : __assert_fail ("OpenMPDeviceActions.size() == ToolChains.size() && \"Number of OpenMP actions and toolchains do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2111, __PRETTY_FUNCTION__))
;
2112
2113 // The host only depends on device action in the linking phase, when all
2114 // the device images have to be embedded in the host image.
2115 if (CurPhase == phases::Link) {
2116 assert(ToolChains.size() == DeviceLinkerInputs.size() &&((ToolChains.size() == DeviceLinkerInputs.size() && "Toolchains and linker inputs sizes do not match."
) ? static_cast<void> (0) : __assert_fail ("ToolChains.size() == DeviceLinkerInputs.size() && \"Toolchains and linker inputs sizes do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2117, __PRETTY_FUNCTION__))
2117 "Toolchains and linker inputs sizes do not match.")((ToolChains.size() == DeviceLinkerInputs.size() && "Toolchains and linker inputs sizes do not match."
) ? static_cast<void> (0) : __assert_fail ("ToolChains.size() == DeviceLinkerInputs.size() && \"Toolchains and linker inputs sizes do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2117, __PRETTY_FUNCTION__))
;
2118 auto LI = DeviceLinkerInputs.begin();
2119 for (auto *A : OpenMPDeviceActions) {
2120 LI->push_back(A);
2121 ++LI;
2122 }
2123
2124 // We passed the device action as a host dependence, so we don't need to
2125 // do anything else with them.
2126 OpenMPDeviceActions.clear();
2127 return ABRT_Success;
2128 }
2129
2130 // By default, we produce an action for each device arch.
2131 for (Action *&A : OpenMPDeviceActions)
2132 A = C.getDriver().ConstructPhaseAction(C, Args, CurPhase, A);
2133
2134 return ABRT_Success;
2135 }
2136
2137 ActionBuilderReturnCode addDeviceDepences(Action *HostAction) override {
2138
2139 // If this is an input action replicate it for each OpenMP toolchain.
2140 if (auto *IA = dyn_cast<InputAction>(HostAction)) {
2141 OpenMPDeviceActions.clear();
2142 for (unsigned I = 0; I < ToolChains.size(); ++I)
2143 OpenMPDeviceActions.push_back(
2144 C.MakeAction<InputAction>(IA->getInputArg(), IA->getType()));
2145 return ABRT_Success;
2146 }
2147
2148 // If this is an unbundling action use it as is for each OpenMP toolchain.
2149 if (auto *UA = dyn_cast<OffloadUnbundlingJobAction>(HostAction)) {
2150 OpenMPDeviceActions.clear();
2151 for (unsigned I = 0; I < ToolChains.size(); ++I) {
2152 OpenMPDeviceActions.push_back(UA);
2153 UA->registerDependentActionInfo(
2154 ToolChains[I], /*BoundArch=*/StringRef(), Action::OFK_OpenMP);
2155 }
2156 return ABRT_Success;
2157 }
2158
2159 // When generating code for OpenMP we use the host compile phase result as
2160 // a dependence to the device compile phase so that it can learn what
2161 // declarations should be emitted. However, this is not the only use for
2162 // the host action, so we prevent it from being collapsed.
2163 if (isa<CompileJobAction>(HostAction)) {
2164 HostAction->setCannotBeCollapsedWithNextDependentAction();
2165 assert(ToolChains.size() == OpenMPDeviceActions.size() &&((ToolChains.size() == OpenMPDeviceActions.size() && "Toolchains and device action sizes do not match."
) ? static_cast<void> (0) : __assert_fail ("ToolChains.size() == OpenMPDeviceActions.size() && \"Toolchains and device action sizes do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2166, __PRETTY_FUNCTION__))
2166 "Toolchains and device action sizes do not match.")((ToolChains.size() == OpenMPDeviceActions.size() && "Toolchains and device action sizes do not match."
) ? static_cast<void> (0) : __assert_fail ("ToolChains.size() == OpenMPDeviceActions.size() && \"Toolchains and device action sizes do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2166, __PRETTY_FUNCTION__))
;
2167 OffloadAction::HostDependence HDep(
2168 *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2169 /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2170 auto TC = ToolChains.begin();
2171 for (Action *&A : OpenMPDeviceActions) {
2172 assert(isa<CompileJobAction>(A))((isa<CompileJobAction>(A)) ? static_cast<void> (
0) : __assert_fail ("isa<CompileJobAction>(A)", "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2172, __PRETTY_FUNCTION__))
;
2173 OffloadAction::DeviceDependences DDep;
2174 DDep.add(*A, **TC, /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2175 A = C.MakeAction<OffloadAction>(HDep, DDep);
2176 ++TC;
2177 }
2178 }
2179 return ABRT_Success;
2180 }
2181
2182 void appendTopLevelActions(ActionList &AL) override {
2183 if (OpenMPDeviceActions.empty())
2184 return;
2185
2186 // We should always have an action for each input.
2187 assert(OpenMPDeviceActions.size() == ToolChains.size() &&((OpenMPDeviceActions.size() == ToolChains.size() && "Number of OpenMP actions and toolchains do not match."
) ? static_cast<void> (0) : __assert_fail ("OpenMPDeviceActions.size() == ToolChains.size() && \"Number of OpenMP actions and toolchains do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2188, __PRETTY_FUNCTION__))
2188 "Number of OpenMP actions and toolchains do not match.")((OpenMPDeviceActions.size() == ToolChains.size() && "Number of OpenMP actions and toolchains do not match."
) ? static_cast<void> (0) : __assert_fail ("OpenMPDeviceActions.size() == ToolChains.size() && \"Number of OpenMP actions and toolchains do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2188, __PRETTY_FUNCTION__))
;
2189
2190 // Append all device actions followed by the proper offload action.
2191 auto TI = ToolChains.begin();
2192 for (auto *A : OpenMPDeviceActions) {
2193 OffloadAction::DeviceDependences Dep;
2194 Dep.add(*A, **TI, /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2195 AL.push_back(C.MakeAction<OffloadAction>(Dep, A->getType()));
2196 ++TI;
2197 }
2198 // We no longer need the action stored in this builder.
2199 OpenMPDeviceActions.clear();
2200 }
2201
2202 void appendLinkDependences(OffloadAction::DeviceDependences &DA) override {
2203 assert(ToolChains.size() == DeviceLinkerInputs.size() &&((ToolChains.size() == DeviceLinkerInputs.size() && "Toolchains and linker inputs sizes do not match."
) ? static_cast<void> (0) : __assert_fail ("ToolChains.size() == DeviceLinkerInputs.size() && \"Toolchains and linker inputs sizes do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2204, __PRETTY_FUNCTION__))
2204 "Toolchains and linker inputs sizes do not match.")((ToolChains.size() == DeviceLinkerInputs.size() && "Toolchains and linker inputs sizes do not match."
) ? static_cast<void> (0) : __assert_fail ("ToolChains.size() == DeviceLinkerInputs.size() && \"Toolchains and linker inputs sizes do not match.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2204, __PRETTY_FUNCTION__))
;
2205
2206 // Append a new link action for each device.
2207 auto TC = ToolChains.begin();
2208 for (auto &LI : DeviceLinkerInputs) {
2209 auto *DeviceLinkAction =
2210 C.MakeAction<LinkJobAction>(LI, types::TY_Image);
2211 DA.add(*DeviceLinkAction, **TC, /*BoundArch=*/nullptr,
2212 Action::OFK_OpenMP);
2213 ++TC;
2214 }
2215 }
2216
2217 bool initialize() override {
2218 // Get the OpenMP toolchains. If we don't get any, the action builder will
2219 // know there is nothing to do related to OpenMP offloading.
2220 auto OpenMPTCRange = C.getOffloadToolChains<Action::OFK_OpenMP>();
2221 for (auto TI = OpenMPTCRange.first, TE = OpenMPTCRange.second; TI != TE;
2222 ++TI)
2223 ToolChains.push_back(TI->second);
2224
2225 DeviceLinkerInputs.resize(ToolChains.size());
2226 return false;
2227 }
2228
2229 bool canUseBundlerUnbundler() const override {
2230 // OpenMP should use bundled files whenever possible.
2231 return true;
2232 }
2233 };
2234
2235 ///
2236 /// TODO: Add the implementation for other specialized builders here.
2237 ///
2238
2239 /// Specialized builders being used by this offloading action builder.
2240 SmallVector<DeviceActionBuilder *, 4> SpecializedBuilders;
2241
2242 /// Flag set to true if all valid builders allow file bundling/unbundling.
2243 bool CanUseBundler;
2244
2245public:
2246 OffloadingActionBuilder(Compilation &C, DerivedArgList &Args,
2247 const Driver::InputList &Inputs)
2248 : C(C) {
2249 // Create a specialized builder for each device toolchain.
2250
2251 IsValid = true;
2252
2253 // Create a specialized builder for CUDA.
2254 SpecializedBuilders.push_back(new CudaActionBuilder(C, Args, Inputs));
2255
2256 // Create a specialized builder for OpenMP.
2257 SpecializedBuilders.push_back(new OpenMPActionBuilder(C, Args, Inputs));
2258
2259 //
2260 // TODO: Build other specialized builders here.
2261 //
2262
2263 // Initialize all the builders, keeping track of errors. If all valid
2264 // builders agree that we can use bundling, set the flag to true.
2265 unsigned ValidBuilders = 0u;
2266 unsigned ValidBuildersSupportingBundling = 0u;
2267 for (auto *SB : SpecializedBuilders) {
2268 IsValid = IsValid && !SB->initialize();
2269
2270 // Update the counters if the builder is valid.
2271 if (SB->isValid()) {
2272 ++ValidBuilders;
2273 if (SB->canUseBundlerUnbundler())
2274 ++ValidBuildersSupportingBundling;
2275 }
2276 }
2277 CanUseBundler =
2278 ValidBuilders && ValidBuilders == ValidBuildersSupportingBundling;
2279 }
2280
2281 ~OffloadingActionBuilder() {
2282 for (auto *SB : SpecializedBuilders)
2283 delete SB;
2284 }
2285
2286 /// Generate an action that adds device dependences (if any) to a host action.
2287 /// If no device dependence actions exist, just return the host action \a
2288 /// HostAction. If an error is found or if no builder requires the host action
2289 /// to be generated, return nullptr.
2290 Action *
2291 addDeviceDependencesToHostAction(Action *HostAction, const Arg *InputArg,
2292 phases::ID CurPhase, phases::ID FinalPhase,
2293 DeviceActionBuilder::PhasesTy &Phases) {
2294 if (!IsValid)
2295 return nullptr;
2296
2297 if (SpecializedBuilders.empty())
2298 return HostAction;
2299
2300 assert(HostAction && "Invalid host action!")((HostAction && "Invalid host action!") ? static_cast
<void> (0) : __assert_fail ("HostAction && \"Invalid host action!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2300, __PRETTY_FUNCTION__))
;
2301
2302 OffloadAction::DeviceDependences DDeps;
2303 // Check if all the programming models agree we should not emit the host
2304 // action. Also, keep track of the offloading kinds employed.
2305 auto &OffloadKind = InputArgToOffloadKindMap[InputArg];
2306 unsigned InactiveBuilders = 0u;
2307 unsigned IgnoringBuilders = 0u;
2308 for (auto *SB : SpecializedBuilders) {
2309 if (!SB->isValid()) {
2310 ++InactiveBuilders;
2311 continue;
2312 }
2313
2314 auto RetCode =
2315 SB->getDeviceDependences(DDeps, CurPhase, FinalPhase, Phases);
2316
2317 // If the builder explicitly says the host action should be ignored,
2318 // we need to increment the variable that tracks the builders that request
2319 // the host object to be ignored.
2320 if (RetCode == DeviceActionBuilder::ABRT_Ignore_Host)
2321 ++IgnoringBuilders;
2322
2323 // Unless the builder was inactive for this action, we have to record the
2324 // offload kind because the host will have to use it.
2325 if (RetCode != DeviceActionBuilder::ABRT_Inactive)
2326 OffloadKind |= SB->getAssociatedOffloadKind();
2327 }
2328
2329 // If all builders agree that the host object should be ignored, just return
2330 // nullptr.
2331 if (IgnoringBuilders &&
2332 SpecializedBuilders.size() == (InactiveBuilders + IgnoringBuilders))
2333 return nullptr;
2334
2335 if (DDeps.getActions().empty())
2336 return HostAction;
2337
2338 // We have dependences we need to bundle together. We use an offload action
2339 // for that.
2340 OffloadAction::HostDependence HDep(
2341 *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2342 /*BoundArch=*/nullptr, DDeps);
2343 return C.MakeAction<OffloadAction>(HDep, DDeps);
2344 }
2345
2346 /// Generate an action that adds a host dependence to a device action. The
2347 /// results will be kept in this action builder. Return true if an error was
2348 /// found.
2349 bool addHostDependenceToDeviceActions(Action *&HostAction,
2350 const Arg *InputArg) {
2351 if (!IsValid)
2352 return true;
2353
2354 // If we are supporting bundling/unbundling and the current action is an
2355 // input action of non-source file, we replace the host action by the
2356 // unbundling action. The bundler tool has the logic to detect if an input
2357 // is a bundle or not and if the input is not a bundle it assumes it is a
2358 // host file. Therefore it is safe to create an unbundling action even if
2359 // the input is not a bundle.
2360 if (CanUseBundler && isa<InputAction>(HostAction) &&
2361 InputArg->getOption().getKind() == llvm::opt::Option::InputClass &&
2362 !types::isSrcFile(HostAction->getType())) {
2363 auto UnbundlingHostAction =
2364 C.MakeAction<OffloadUnbundlingJobAction>(HostAction);
2365 UnbundlingHostAction->registerDependentActionInfo(
2366 C.getSingleOffloadToolChain<Action::OFK_Host>(),
2367 /*BoundArch=*/StringRef(), Action::OFK_Host);
2368 HostAction = UnbundlingHostAction;
2369 }
2370
2371 assert(HostAction && "Invalid host action!")((HostAction && "Invalid host action!") ? static_cast
<void> (0) : __assert_fail ("HostAction && \"Invalid host action!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2371, __PRETTY_FUNCTION__))
;
2372
2373 // Register the offload kinds that are used.
2374 auto &OffloadKind = InputArgToOffloadKindMap[InputArg];
2375 for (auto *SB : SpecializedBuilders) {
2376 if (!SB->isValid())
2377 continue;
2378
2379 auto RetCode = SB->addDeviceDepences(HostAction);
2380
2381 // Host dependences for device actions are not compatible with that same
2382 // action being ignored.
2383 assert(RetCode != DeviceActionBuilder::ABRT_Ignore_Host &&((RetCode != DeviceActionBuilder::ABRT_Ignore_Host &&
"Host dependence not expected to be ignored.!") ? static_cast
<void> (0) : __assert_fail ("RetCode != DeviceActionBuilder::ABRT_Ignore_Host && \"Host dependence not expected to be ignored.!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2384, __PRETTY_FUNCTION__))
2384 "Host dependence not expected to be ignored.!")((RetCode != DeviceActionBuilder::ABRT_Ignore_Host &&
"Host dependence not expected to be ignored.!") ? static_cast
<void> (0) : __assert_fail ("RetCode != DeviceActionBuilder::ABRT_Ignore_Host && \"Host dependence not expected to be ignored.!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2384, __PRETTY_FUNCTION__))
;
2385
2386 // Unless the builder was inactive for this action, we have to record the
2387 // offload kind because the host will have to use it.
2388 if (RetCode != DeviceActionBuilder::ABRT_Inactive)
2389 OffloadKind |= SB->getAssociatedOffloadKind();
2390 }
2391
2392 return false;
2393 }
2394
2395 /// Add the offloading top level actions to the provided action list. This
2396 /// function can replace the host action by a bundling action if the
2397 /// programming models allow it.
2398 bool appendTopLevelActions(ActionList &AL, Action *HostAction,
2399 const Arg *InputArg) {
2400 // Get the device actions to be appended.
2401 ActionList OffloadAL;
2402 for (auto *SB : SpecializedBuilders) {
2403 if (!SB->isValid())
2404 continue;
2405 SB->appendTopLevelActions(OffloadAL);
2406 }
2407
2408 // If we can use the bundler, replace the host action by the bundling one in
2409 // the resulting list. Otherwise, just append the device actions.
2410 if (CanUseBundler && !OffloadAL.empty()) {
2411 // Add the host action to the list in order to create the bundling action.
2412 OffloadAL.push_back(HostAction);
2413
2414 // We expect that the host action was just appended to the action list
2415 // before this method was called.
2416 assert(HostAction == AL.back() && "Host action not in the list??")((HostAction == AL.back() && "Host action not in the list??"
) ? static_cast<void> (0) : __assert_fail ("HostAction == AL.back() && \"Host action not in the list??\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2416, __PRETTY_FUNCTION__))
;
2417 HostAction = C.MakeAction<OffloadBundlingJobAction>(OffloadAL);
2418 AL.back() = HostAction;
2419 } else
2420 AL.append(OffloadAL.begin(), OffloadAL.end());
2421
2422 // Propagate to the current host action (if any) the offload information
2423 // associated with the current input.
2424 if (HostAction)
2425 HostAction->propagateHostOffloadInfo(InputArgToOffloadKindMap[InputArg],
2426 /*BoundArch=*/nullptr);
2427 return false;
2428 }
2429
2430 /// Processes the host linker action. This currently consists of replacing it
2431 /// with an offload action if there are device link objects and propagate to
2432 /// the host action all the offload kinds used in the current compilation. The
2433 /// resulting action is returned.
2434 Action *processHostLinkAction(Action *HostAction) {
2435 // Add all the dependences from the device linking actions.
2436 OffloadAction::DeviceDependences DDeps;
2437 for (auto *SB : SpecializedBuilders) {
2438 if (!SB->isValid())
2439 continue;
2440
2441 SB->appendLinkDependences(DDeps);
2442 }
2443
2444 // Calculate all the offload kinds used in the current compilation.
2445 unsigned ActiveOffloadKinds = 0u;
2446 for (auto &I : InputArgToOffloadKindMap)
2447 ActiveOffloadKinds |= I.second;
2448
2449 // If we don't have device dependencies, we don't have to create an offload
2450 // action.
2451 if (DDeps.getActions().empty()) {
2452 // Propagate all the active kinds to host action. Given that it is a link
2453 // action it is assumed to depend on all actions generated so far.
2454 HostAction->propagateHostOffloadInfo(ActiveOffloadKinds,
2455 /*BoundArch=*/nullptr);
2456 return HostAction;
2457 }
2458
2459 // Create the offload action with all dependences. When an offload action
2460 // is created the kinds are propagated to the host action, so we don't have
2461 // to do that explicitly here.
2462 OffloadAction::HostDependence HDep(
2463 *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2464 /*BoundArch*/ nullptr, ActiveOffloadKinds);
2465 return C.MakeAction<OffloadAction>(HDep, DDeps);
2466 }
2467};
2468} // anonymous namespace.
2469
2470void Driver::BuildActions(Compilation &C, DerivedArgList &Args,
2471 const InputList &Inputs, ActionList &Actions) const {
2472 llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
2473
2474 if (!SuppressMissingInputWarning && Inputs.empty()) {
2475 Diag(clang::diag::err_drv_no_input_files);
2476 return;
2477 }
2478
2479 Arg *FinalPhaseArg;
2480 phases::ID FinalPhase = getFinalPhase(Args, &FinalPhaseArg);
2481
2482 if (FinalPhase == phases::Link) {
2483 if (Args.hasArg(options::OPT_emit_llvm))
2484 Diag(clang::diag::err_drv_emit_llvm_link);
2485 if (IsCLMode() && LTOMode != LTOK_None &&
2486 !Args.getLastArgValue(options::OPT_fuse_ld_EQ).equals_lower("lld"))
2487 Diag(clang::diag::err_drv_lto_without_lld);
2488 }
2489
2490 // Reject -Z* at the top level, these options should never have been exposed
2491 // by gcc.
2492 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
2493 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
2494
2495 // Diagnose misuse of /Fo.
2496 if (Arg *A = Args.getLastArg(options::OPT__SLASH_Fo)) {
2497 StringRef V = A->getValue();
2498 if (Inputs.size() > 1 && !V.empty() &&
2499 !llvm::sys::path::is_separator(V.back())) {
2500 // Check whether /Fo tries to name an output file for multiple inputs.
2501 Diag(clang::diag::err_drv_out_file_argument_with_multiple_sources)
2502 << A->getSpelling() << V;
2503 Args.eraseArg(options::OPT__SLASH_Fo);
2504 }
2505 }
2506
2507 // Diagnose misuse of /Fa.
2508 if (Arg *A = Args.getLastArg(options::OPT__SLASH_Fa)) {
2509 StringRef V = A->getValue();
2510 if (Inputs.size() > 1 && !V.empty() &&
2511 !llvm::sys::path::is_separator(V.back())) {
2512 // Check whether /Fa tries to name an asm file for multiple inputs.
2513 Diag(clang::diag::err_drv_out_file_argument_with_multiple_sources)
2514 << A->getSpelling() << V;
2515 Args.eraseArg(options::OPT__SLASH_Fa);
2516 }
2517 }
2518
2519 // Diagnose misuse of /o.
2520 if (Arg *A = Args.getLastArg(options::OPT__SLASH_o)) {
2521 if (A->getValue()[0] == '\0') {
2522 // It has to have a value.
2523 Diag(clang::diag::err_drv_missing_argument) << A->getSpelling() << 1;
2524 Args.eraseArg(options::OPT__SLASH_o);
2525 }
2526 }
2527
2528 // Diagnose unsupported forms of /Yc /Yu. Ignore /Yc/Yu for now if:
2529 // * no filename after it
2530 // * both /Yc and /Yu passed but with different filenames
2531 // * corresponding file not also passed as /FI
2532 Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
2533 Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
2534 if (YcArg && YcArg->getValue()[0] == '\0') {
2535 Diag(clang::diag::warn_drv_ycyu_no_arg_clang_cl) << YcArg->getSpelling();
2536 Args.eraseArg(options::OPT__SLASH_Yc);
2537 YcArg = nullptr;
2538 }
2539 if (YuArg && YuArg->getValue()[0] == '\0') {
2540 Diag(clang::diag::warn_drv_ycyu_no_arg_clang_cl) << YuArg->getSpelling();
2541 Args.eraseArg(options::OPT__SLASH_Yu);
2542 YuArg = nullptr;
2543 }
2544 if (YcArg && YuArg && strcmp(YcArg->getValue(), YuArg->getValue()) != 0) {
2545 Diag(clang::diag::warn_drv_ycyu_different_arg_clang_cl);
2546 Args.eraseArg(options::OPT__SLASH_Yc);
2547 Args.eraseArg(options::OPT__SLASH_Yu);
2548 YcArg = YuArg = nullptr;
2549 }
2550 if (YcArg || YuArg) {
2551 StringRef Val = YcArg ? YcArg->getValue() : YuArg->getValue();
2552 bool FoundMatchingInclude = false;
2553 for (const Arg *Inc : Args.filtered(options::OPT_include)) {
2554 // FIXME: Do case-insensitive matching and consider / and \ as equal.
2555 if (Inc->getValue() == Val)
2556 FoundMatchingInclude = true;
2557 }
2558 if (!FoundMatchingInclude) {
2559 Diag(clang::diag::warn_drv_ycyu_no_fi_arg_clang_cl)
2560 << (YcArg ? YcArg : YuArg)->getSpelling();
2561 Args.eraseArg(options::OPT__SLASH_Yc);
2562 Args.eraseArg(options::OPT__SLASH_Yu);
2563 YcArg = YuArg = nullptr;
2564 }
2565 }
2566 if (YcArg && Inputs.size() > 1) {
2567 Diag(clang::diag::warn_drv_yc_multiple_inputs_clang_cl);
2568 Args.eraseArg(options::OPT__SLASH_Yc);
2569 YcArg = nullptr;
2570 }
2571 if (Args.hasArg(options::OPT__SLASH_Y_)) {
2572 // /Y- disables all pch handling. Rather than check for it everywhere,
2573 // just remove clang-cl pch-related flags here.
2574 Args.eraseArg(options::OPT__SLASH_Fp);
2575 Args.eraseArg(options::OPT__SLASH_Yc);
2576 Args.eraseArg(options::OPT__SLASH_Yu);
2577 YcArg = YuArg = nullptr;
2578 }
2579
2580 // Builder to be used to build offloading actions.
2581 OffloadingActionBuilder OffloadBuilder(C, Args, Inputs);
2582
2583 // Construct the actions to perform.
2584 ActionList LinkerInputs;
2585
2586 llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> PL;
2587 for (auto &I : Inputs) {
2588 types::ID InputType = I.first;
2589 const Arg *InputArg = I.second;
2590
2591 PL.clear();
2592 types::getCompilationPhases(InputType, PL);
2593
2594 // If the first step comes after the final phase we are doing as part of
2595 // this compilation, warn the user about it.
2596 phases::ID InitialPhase = PL[0];
2597 if (InitialPhase > FinalPhase) {
2598 // Claim here to avoid the more general unused warning.
2599 InputArg->claim();
2600
2601 // Suppress all unused style warnings with -Qunused-arguments
2602 if (Args.hasArg(options::OPT_Qunused_arguments))
2603 continue;
2604
2605 // Special case when final phase determined by binary name, rather than
2606 // by a command-line argument with a corresponding Arg.
2607 if (CCCIsCPP())
2608 Diag(clang::diag::warn_drv_input_file_unused_by_cpp)
2609 << InputArg->getAsString(Args) << getPhaseName(InitialPhase);
2610 // Special case '-E' warning on a previously preprocessed file to make
2611 // more sense.
2612 else if (InitialPhase == phases::Compile &&
2613 FinalPhase == phases::Preprocess &&
2614 getPreprocessedType(InputType) == types::TY_INVALID)
2615 Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
2616 << InputArg->getAsString(Args) << !!FinalPhaseArg
2617 << (FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "");
2618 else
2619 Diag(clang::diag::warn_drv_input_file_unused)
2620 << InputArg->getAsString(Args) << getPhaseName(InitialPhase)
2621 << !!FinalPhaseArg
2622 << (FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "");
2623 continue;
2624 }
2625
2626 if (YcArg) {
2627 // Add a separate precompile phase for the compile phase.
2628 if (FinalPhase >= phases::Compile) {
2629 const types::ID HeaderType = lookupHeaderTypeForSourceType(InputType);
2630 llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> PCHPL;
2631 types::getCompilationPhases(HeaderType, PCHPL);
2632 Arg *PchInputArg = MakeInputArg(Args, *Opts, YcArg->getValue());
2633
2634 // Build the pipeline for the pch file.
2635 Action *ClangClPch =
2636 C.MakeAction<InputAction>(*PchInputArg, HeaderType);
2637 for (phases::ID Phase : PCHPL)
2638 ClangClPch = ConstructPhaseAction(C, Args, Phase, ClangClPch);
2639 assert(ClangClPch)((ClangClPch) ? static_cast<void> (0) : __assert_fail (
"ClangClPch", "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2639, __PRETTY_FUNCTION__))
;
2640 Actions.push_back(ClangClPch);
2641 // The driver currently exits after the first failed command. This
2642 // relies on that behavior, to make sure if the pch generation fails,
2643 // the main compilation won't run.
2644 }
2645 }
2646
2647 // Build the pipeline for this file.
2648 Action *Current = C.MakeAction<InputAction>(*InputArg, InputType);
2649
2650 // Use the current host action in any of the offloading actions, if
2651 // required.
2652 if (OffloadBuilder.addHostDependenceToDeviceActions(Current, InputArg))
2653 break;
2654
2655 for (SmallVectorImpl<phases::ID>::iterator i = PL.begin(), e = PL.end();
2656 i != e; ++i) {
2657 phases::ID Phase = *i;
2658
2659 // We are done if this step is past what the user requested.
2660 if (Phase > FinalPhase)
2661 break;
2662
2663 // Add any offload action the host action depends on.
2664 Current = OffloadBuilder.addDeviceDependencesToHostAction(
2665 Current, InputArg, Phase, FinalPhase, PL);
2666 if (!Current)
2667 break;
2668
2669 // Queue linker inputs.
2670 if (Phase == phases::Link) {
2671 assert((i + 1) == e && "linking must be final compilation step.")(((i + 1) == e && "linking must be final compilation step."
) ? static_cast<void> (0) : __assert_fail ("(i + 1) == e && \"linking must be final compilation step.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2671, __PRETTY_FUNCTION__))
;
2672 LinkerInputs.push_back(Current);
2673 Current = nullptr;
2674 break;
2675 }
2676
2677 // Otherwise construct the appropriate action.
2678 auto *NewCurrent = ConstructPhaseAction(C, Args, Phase, Current);
2679
2680 // We didn't create a new action, so we will just move to the next phase.
2681 if (NewCurrent == Current)
2682 continue;
2683
2684 Current = NewCurrent;
2685
2686 // Use the current host action in any of the offloading actions, if
2687 // required.
2688 if (OffloadBuilder.addHostDependenceToDeviceActions(Current, InputArg))
2689 break;
2690
2691 if (Current->getType() == types::TY_Nothing)
2692 break;
2693 }
2694
2695 // If we ended with something, add to the output list.
2696 if (Current)
2697 Actions.push_back(Current);
2698
2699 // Add any top level actions generated for offloading.
2700 OffloadBuilder.appendTopLevelActions(Actions, Current, InputArg);
2701 }
2702
2703 // Add a link action if necessary.
2704 if (!LinkerInputs.empty()) {
2705 Action *LA = C.MakeAction<LinkJobAction>(LinkerInputs, types::TY_Image);
2706 LA = OffloadBuilder.processHostLinkAction(LA);
2707 Actions.push_back(LA);
2708 }
2709
2710 // If we are linking, claim any options which are obviously only used for
2711 // compilation.
2712 if (FinalPhase == phases::Link && PL.size() == 1) {
2713 Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
2714 Args.ClaimAllArgs(options::OPT_cl_compile_Group);
2715 }
2716
2717 // Claim ignored clang-cl options.
2718 Args.ClaimAllArgs(options::OPT_cl_ignored_Group);
2719
2720 // Claim --cuda-host-only and --cuda-compile-host-device, which may be passed
2721 // to non-CUDA compilations and should not trigger warnings there.
2722 Args.ClaimAllArgs(options::OPT_cuda_host_only);
2723 Args.ClaimAllArgs(options::OPT_cuda_compile_host_device);
2724}
2725
2726Action *Driver::ConstructPhaseAction(Compilation &C, const ArgList &Args,
2727 phases::ID Phase, Action *Input) const {
2728 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
2729
2730 // Some types skip the assembler phase (e.g., llvm-bc), but we can't
2731 // encode this in the steps because the intermediate type depends on
2732 // arguments. Just special case here.
2733 if (Phase == phases::Assemble && Input->getType() != types::TY_PP_Asm)
2734 return Input;
2735
2736 // Build the appropriate action.
2737 switch (Phase) {
2738 case phases::Link:
2739 llvm_unreachable("link action invalid here.")::llvm::llvm_unreachable_internal("link action invalid here."
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2739)
;
2740 case phases::Preprocess: {
2741 types::ID OutputTy;
2742 // -{M, MM} alter the output type.
2743 if (Args.hasArg(options::OPT_M, options::OPT_MM)) {
2744 OutputTy = types::TY_Dependencies;
2745 } else {
2746 OutputTy = Input->getType();
2747 if (!Args.hasFlag(options::OPT_frewrite_includes,
2748 options::OPT_fno_rewrite_includes, false) &&
2749 !Args.hasFlag(options::OPT_frewrite_imports,
2750 options::OPT_fno_rewrite_imports, false) &&
2751 !CCGenDiagnostics)
2752 OutputTy = types::getPreprocessedType(OutputTy);
2753 assert(OutputTy != types::TY_INVALID &&((OutputTy != types::TY_INVALID && "Cannot preprocess this input type!"
) ? static_cast<void> (0) : __assert_fail ("OutputTy != types::TY_INVALID && \"Cannot preprocess this input type!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2754, __PRETTY_FUNCTION__))
2754 "Cannot preprocess this input type!")((OutputTy != types::TY_INVALID && "Cannot preprocess this input type!"
) ? static_cast<void> (0) : __assert_fail ("OutputTy != types::TY_INVALID && \"Cannot preprocess this input type!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2754, __PRETTY_FUNCTION__))
;
2755 }
2756 return C.MakeAction<PreprocessJobAction>(Input, OutputTy);
2757 }
2758 case phases::Precompile: {
2759 types::ID OutputTy = getPrecompiledType(Input->getType());
2760 assert(OutputTy != types::TY_INVALID &&((OutputTy != types::TY_INVALID && "Cannot precompile this input type!"
) ? static_cast<void> (0) : __assert_fail ("OutputTy != types::TY_INVALID && \"Cannot precompile this input type!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2761, __PRETTY_FUNCTION__))
2761 "Cannot precompile this input type!")((OutputTy != types::TY_INVALID && "Cannot precompile this input type!"
) ? static_cast<void> (0) : __assert_fail ("OutputTy != types::TY_INVALID && \"Cannot precompile this input type!\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2761, __PRETTY_FUNCTION__))
;
2762 if (Args.hasArg(options::OPT_fsyntax_only)) {
2763 // Syntax checks should not emit a PCH file
2764 OutputTy = types::TY_Nothing;
2765 }
2766 return C.MakeAction<PrecompileJobAction>(Input, OutputTy);
2767 }
2768 case phases::Compile: {
2769 if (Args.hasArg(options::OPT_fsyntax_only))
2770 return C.MakeAction<CompileJobAction>(Input, types::TY_Nothing);
2771 if (Args.hasArg(options::OPT_rewrite_objc))
2772 return C.MakeAction<CompileJobAction>(Input, types::TY_RewrittenObjC);
2773 if (Args.hasArg(options::OPT_rewrite_legacy_objc))
2774 return C.MakeAction<CompileJobAction>(Input,
2775 types::TY_RewrittenLegacyObjC);
2776 if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto))
2777 return C.MakeAction<AnalyzeJobAction>(Input, types::TY_Plist);
2778 if (Args.hasArg(options::OPT__migrate))
2779 return C.MakeAction<MigrateJobAction>(Input, types::TY_Remap);
2780 if (Args.hasArg(options::OPT_emit_ast))
2781 return C.MakeAction<CompileJobAction>(Input, types::TY_AST);
2782 if (Args.hasArg(options::OPT_module_file_info))
2783 return C.MakeAction<CompileJobAction>(Input, types::TY_ModuleFile);
2784 if (Args.hasArg(options::OPT_verify_pch))
2785 return C.MakeAction<VerifyPCHJobAction>(Input, types::TY_Nothing);
2786 return C.MakeAction<CompileJobAction>(Input, types::TY_LLVM_BC);
2787 }
2788 case phases::Backend: {
2789 if (isUsingLTO()) {
2790 types::ID Output =
2791 Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC;
2792 return C.MakeAction<BackendJobAction>(Input, Output);
2793 }
2794 if (Args.hasArg(options::OPT_emit_llvm)) {
2795 types::ID Output =
2796 Args.hasArg(options::OPT_S) ? types::TY_LLVM_IR : types::TY_LLVM_BC;
2797 return C.MakeAction<BackendJobAction>(Input, Output);
2798 }
2799 return C.MakeAction<BackendJobAction>(Input, types::TY_PP_Asm);
2800 }
2801 case phases::Assemble:
2802 return C.MakeAction<AssembleJobAction>(std::move(Input), types::TY_Object);
2803 }
2804
2805 llvm_unreachable("invalid phase in ConstructPhaseAction")::llvm::llvm_unreachable_internal("invalid phase in ConstructPhaseAction"
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 2805)
;
2806}
2807
2808void Driver::BuildJobs(Compilation &C) const {
2809 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
2810
2811 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
2812
2813 // It is an error to provide a -o option if we are making multiple output
2814 // files.
2815 if (FinalOutput) {
2816 unsigned NumOutputs = 0;
2817 for (const Action *A : C.getActions())
2818 if (A->getType() != types::TY_Nothing)
2819 ++NumOutputs;
2820
2821 if (NumOutputs > 1) {
2822 Diag(clang::diag::err_drv_output_argument_with_multiple_files);
2823 FinalOutput = nullptr;
2824 }
2825 }
2826
2827 // Collect the list of architectures.
2828 llvm::StringSet<> ArchNames;
2829 if (C.getDefaultToolChain().getTriple().isOSBinFormatMachO())
2830 for (const Arg *A : C.getArgs())
2831 if (A->getOption().matches(options::OPT_arch))
2832 ArchNames.insert(A->getValue());
2833
2834 // Set of (Action, canonical ToolChain triple) pairs we've built jobs for.
2835 std::map<std::pair<const Action *, std::string>, InputInfo> CachedResults;
2836 for (Action *A : C.getActions()) {
2837 // If we are linking an image for multiple archs then the linker wants
2838 // -arch_multiple and -final_output <final image name>. Unfortunately, this
2839 // doesn't fit in cleanly because we have to pass this information down.
2840 //
2841 // FIXME: This is a hack; find a cleaner way to integrate this into the
2842 // process.
2843 const char *LinkingOutput = nullptr;
2844 if (isa<LipoJobAction>(A)) {
2845 if (FinalOutput)
2846 LinkingOutput = FinalOutput->getValue();
2847 else
2848 LinkingOutput = getDefaultImageName();
2849 }
2850
2851 BuildJobsForAction(C, A, &C.getDefaultToolChain(),
2852 /*BoundArch*/ StringRef(),
2853 /*AtTopLevel*/ true,
2854 /*MultipleArchs*/ ArchNames.size() > 1,
2855 /*LinkingOutput*/ LinkingOutput, CachedResults,
2856 /*TargetDeviceOffloadKind*/ Action::OFK_None);
2857 }
2858
2859 // If the user passed -Qunused-arguments or there were errors, don't warn
2860 // about any unused arguments.
2861 if (Diags.hasErrorOccurred() ||
2862 C.getArgs().hasArg(options::OPT_Qunused_arguments))
2863 return;
2864
2865 // Claim -### here.
2866 (void)C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
2867
2868 // Claim --driver-mode, --rsp-quoting, it was handled earlier.
2869 (void)C.getArgs().hasArg(options::OPT_driver_mode);
2870 (void)C.getArgs().hasArg(options::OPT_rsp_quoting);
2871
2872 for (Arg *A : C.getArgs()) {
2873 // FIXME: It would be nice to be able to send the argument to the
2874 // DiagnosticsEngine, so that extra values, position, and so on could be
2875 // printed.
2876 if (!A->isClaimed()) {
2877 if (A->getOption().hasFlag(options::NoArgumentUnused))
2878 continue;
2879
2880 // Suppress the warning automatically if this is just a flag, and it is an
2881 // instance of an argument we already claimed.
2882 const Option &Opt = A->getOption();
2883 if (Opt.getKind() == Option::FlagClass) {
2884 bool DuplicateClaimed = false;
2885
2886 for (const Arg *AA : C.getArgs().filtered(&Opt)) {
2887 if (AA->isClaimed()) {
2888 DuplicateClaimed = true;
2889 break;
2890 }
2891 }
2892
2893 if (DuplicateClaimed)
2894 continue;
2895 }
2896
2897 // In clang-cl, don't mention unknown arguments here since they have
2898 // already been warned about.
2899 if (!IsCLMode() || !A->getOption().matches(options::OPT_UNKNOWN))
2900 Diag(clang::diag::warn_drv_unused_argument)
2901 << A->getAsString(C.getArgs());
2902 }
2903 }
2904}
2905
2906namespace {
2907/// Utility class to control the collapse of dependent actions and select the
2908/// tools accordingly.
2909class ToolSelector final {
2910 /// The tool chain this selector refers to.
2911 const ToolChain &TC;
2912
2913 /// The compilation this selector refers to.
2914 const Compilation &C;
2915
2916 /// The base action this selector refers to.
2917 const JobAction *BaseAction;
2918
2919 /// Set to true if the current toolchain refers to host actions.
2920 bool IsHostSelector;
2921
2922 /// Set to true if save-temps and embed-bitcode functionalities are active.
2923 bool SaveTemps;
2924 bool EmbedBitcode;
2925
2926 /// Get previous dependent action or null if that does not exist. If
2927 /// \a CanBeCollapsed is false, that action must be legal to collapse or
2928 /// null will be returned.
2929 const JobAction *getPrevDependentAction(const ActionList &Inputs,
2930 ActionList &SavedOffloadAction,
2931 bool CanBeCollapsed = true) {
2932 // An option can be collapsed only if it has a single input.
2933 if (Inputs.size() != 1)
2934 return nullptr;
2935
2936 Action *CurAction = *Inputs.begin();
2937 if (CanBeCollapsed &&
2938 !CurAction->isCollapsingWithNextDependentActionLegal())
2939 return nullptr;
2940
2941 // If the input action is an offload action. Look through it and save any
2942 // offload action that can be dropped in the event of a collapse.
2943 if (auto *OA = dyn_cast<OffloadAction>(CurAction)) {
2944 // If the dependent action is a device action, we will attempt to collapse
2945 // only with other device actions. Otherwise, we would do the same but
2946 // with host actions only.
2947 if (!IsHostSelector) {
2948 if (OA->hasSingleDeviceDependence(/*DoNotConsiderHostActions=*/true)) {
2949 CurAction =
2950 OA->getSingleDeviceDependence(/*DoNotConsiderHostActions=*/true);
2951 if (CanBeCollapsed &&
2952 !CurAction->isCollapsingWithNextDependentActionLegal())
2953 return nullptr;
2954 SavedOffloadAction.push_back(OA);
2955 return dyn_cast<JobAction>(CurAction);
2956 }
2957 } else if (OA->hasHostDependence()) {
2958 CurAction = OA->getHostDependence();
2959 if (CanBeCollapsed &&
2960 !CurAction->isCollapsingWithNextDependentActionLegal())
2961 return nullptr;
2962 SavedOffloadAction.push_back(OA);
2963 return dyn_cast<JobAction>(CurAction);
2964 }
2965 return nullptr;
2966 }
2967
2968 return dyn_cast<JobAction>(CurAction);
2969 }
2970
2971 /// Return true if an assemble action can be collapsed.
2972 bool canCollapseAssembleAction() const {
2973 return TC.useIntegratedAs() && !SaveTemps &&
2974 !C.getArgs().hasArg(options::OPT_via_file_asm) &&
2975 !C.getArgs().hasArg(options::OPT__SLASH_FA) &&
2976 !C.getArgs().hasArg(options::OPT__SLASH_Fa);
2977 }
2978
2979 /// Return true if a preprocessor action can be collapsed.
2980 bool canCollapsePreprocessorAction() const {
2981 return !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
2982 !C.getArgs().hasArg(options::OPT_traditional_cpp) && !SaveTemps &&
2983 !C.getArgs().hasArg(options::OPT_rewrite_objc);
2984 }
2985
2986 /// Struct that relates an action with the offload actions that would be
2987 /// collapsed with it.
2988 struct JobActionInfo final {
2989 /// The action this info refers to.
2990 const JobAction *JA = nullptr;
2991 /// The offload actions we need to take care off if this action is
2992 /// collapsed.
2993 ActionList SavedOffloadAction;
2994 };
2995
2996 /// Append collapsed offload actions from the give nnumber of elements in the
2997 /// action info array.
2998 static void AppendCollapsedOffloadAction(ActionList &CollapsedOffloadAction,
2999 ArrayRef<JobActionInfo> &ActionInfo,
3000 unsigned ElementNum) {
3001 assert(ElementNum <= ActionInfo.size() && "Invalid number of elements.")((ElementNum <= ActionInfo.size() && "Invalid number of elements."
) ? static_cast<void> (0) : __assert_fail ("ElementNum <= ActionInfo.size() && \"Invalid number of elements.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3001, __PRETTY_FUNCTION__))
;
3002 for (unsigned I = 0; I < ElementNum; ++I)
3003 CollapsedOffloadAction.append(ActionInfo[I].SavedOffloadAction.begin(),
3004 ActionInfo[I].SavedOffloadAction.end());
3005 }
3006
3007 /// Functions that attempt to perform the combining. They detect if that is
3008 /// legal, and if so they update the inputs \a Inputs and the offload action
3009 /// that were collapsed in \a CollapsedOffloadAction. A tool that deals with
3010 /// the combined action is returned. If the combining is not legal or if the
3011 /// tool does not exist, null is returned.
3012 /// Currently three kinds of collapsing are supported:
3013 /// - Assemble + Backend + Compile;
3014 /// - Assemble + Backend ;
3015 /// - Backend + Compile.
3016 const Tool *
3017 combineAssembleBackendCompile(ArrayRef<JobActionInfo> ActionInfo,
3018 const ActionList *&Inputs,
3019 ActionList &CollapsedOffloadAction) {
3020 if (ActionInfo.size() < 3 || !canCollapseAssembleAction())
3021 return nullptr;
3022 auto *AJ = dyn_cast<AssembleJobAction>(ActionInfo[0].JA);
3023 auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[1].JA);
3024 auto *CJ = dyn_cast<CompileJobAction>(ActionInfo[2].JA);
3025 if (!AJ || !BJ || !CJ)
3026 return nullptr;
3027
3028 // Get compiler tool.
3029 const Tool *T = TC.SelectTool(*CJ);
3030 if (!T)
3031 return nullptr;
3032
3033 // When using -fembed-bitcode, it is required to have the same tool (clang)
3034 // for both CompilerJA and BackendJA. Otherwise, combine two stages.
3035 if (EmbedBitcode) {
3036 const Tool *BT = TC.SelectTool(*BJ);
3037 if (BT == T)
3038 return nullptr;
3039 }
3040
3041 if (!T->hasIntegratedAssembler())
3042 return nullptr;
3043
3044 Inputs = &CJ->getInputs();
3045 AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3046 /*NumElements=*/3);
3047 return T;
3048 }
3049 const Tool *combineAssembleBackend(ArrayRef<JobActionInfo> ActionInfo,
3050 const ActionList *&Inputs,
3051 ActionList &CollapsedOffloadAction) {
3052 if (ActionInfo.size() < 2 || !canCollapseAssembleAction())
3053 return nullptr;
3054 auto *AJ = dyn_cast<AssembleJobAction>(ActionInfo[0].JA);
3055 auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[1].JA);
3056 if (!AJ || !BJ)
3057 return nullptr;
3058
3059 // Retrieve the compile job, backend action must always be preceded by one.
3060 ActionList CompileJobOffloadActions;
3061 auto *CJ = getPrevDependentAction(BJ->getInputs(), CompileJobOffloadActions,
3062 /*CanBeCollapsed=*/false);
3063 if (!AJ || !BJ || !CJ)
3064 return nullptr;
3065
3066 assert(isa<CompileJobAction>(CJ) &&((isa<CompileJobAction>(CJ) && "Expecting compile job preceding backend job."
) ? static_cast<void> (0) : __assert_fail ("isa<CompileJobAction>(CJ) && \"Expecting compile job preceding backend job.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3067, __PRETTY_FUNCTION__))
3067 "Expecting compile job preceding backend job.")((isa<CompileJobAction>(CJ) && "Expecting compile job preceding backend job."
) ? static_cast<void> (0) : __assert_fail ("isa<CompileJobAction>(CJ) && \"Expecting compile job preceding backend job.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3067, __PRETTY_FUNCTION__))
;
3068
3069 // Get compiler tool.
3070 const Tool *T = TC.SelectTool(*CJ);
3071 if (!T)
3072 return nullptr;
3073
3074 if (!T->hasIntegratedAssembler())
3075 return nullptr;
3076
3077 Inputs = &BJ->getInputs();
3078 AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3079 /*NumElements=*/2);
3080 return T;
3081 }
3082 const Tool *combineBackendCompile(ArrayRef<JobActionInfo> ActionInfo,
3083 const ActionList *&Inputs,
3084 ActionList &CollapsedOffloadAction) {
3085 if (ActionInfo.size() < 2 || !canCollapsePreprocessorAction())
3086 return nullptr;
3087 auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[0].JA);
3088 auto *CJ = dyn_cast<CompileJobAction>(ActionInfo[1].JA);
3089 if (!BJ || !CJ)
3090 return nullptr;
3091
3092 // Get compiler tool.
3093 const Tool *T = TC.SelectTool(*CJ);
3094 if (!T)
3095 return nullptr;
3096
3097 if (T->canEmitIR() && (SaveTemps || EmbedBitcode))
3098 return nullptr;
3099
3100 Inputs = &CJ->getInputs();
3101 AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3102 /*NumElements=*/2);
3103 return T;
3104 }
3105
3106 /// Updates the inputs if the obtained tool supports combining with
3107 /// preprocessor action, and the current input is indeed a preprocessor
3108 /// action. If combining results in the collapse of offloading actions, those
3109 /// are appended to \a CollapsedOffloadAction.
3110 void combineWithPreprocessor(const Tool *T, const ActionList *&Inputs,
3111 ActionList &CollapsedOffloadAction) {
3112 if (!T || !canCollapsePreprocessorAction() || !T->hasIntegratedCPP())
3113 return;
3114
3115 // Attempt to get a preprocessor action dependence.
3116 ActionList PreprocessJobOffloadActions;
3117 auto *PJ = getPrevDependentAction(*Inputs, PreprocessJobOffloadActions);
3118 if (!PJ || !isa<PreprocessJobAction>(PJ))
3119 return;
3120
3121 // This is legal to combine. Append any offload action we found and set the
3122 // current inputs to preprocessor inputs.
3123 CollapsedOffloadAction.append(PreprocessJobOffloadActions.begin(),
3124 PreprocessJobOffloadActions.end());
3125 Inputs = &PJ->getInputs();
3126 }
3127
3128public:
3129 ToolSelector(const JobAction *BaseAction, const ToolChain &TC,
3130 const Compilation &C, bool SaveTemps, bool EmbedBitcode)
3131 : TC(TC), C(C), BaseAction(BaseAction), SaveTemps(SaveTemps),
3132 EmbedBitcode(EmbedBitcode) {
3133 assert(BaseAction && "Invalid base action.")((BaseAction && "Invalid base action.") ? static_cast
<void> (0) : __assert_fail ("BaseAction && \"Invalid base action.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3133, __PRETTY_FUNCTION__))
;
3134 IsHostSelector = BaseAction->getOffloadingDeviceKind() == Action::OFK_None;
3135 }
3136
3137 /// Check if a chain of actions can be combined and return the tool that can
3138 /// handle the combination of actions. The pointer to the current inputs \a
3139 /// Inputs and the list of offload actions \a CollapsedOffloadActions
3140 /// connected to collapsed actions are updated accordingly. The latter enables
3141 /// the caller of the selector to process them afterwards instead of just
3142 /// dropping them. If no suitable tool is found, null will be returned.
3143 const Tool *getTool(const ActionList *&Inputs,
3144 ActionList &CollapsedOffloadAction) {
3145 //
3146 // Get the largest chain of actions that we could combine.
3147 //
3148
3149 SmallVector<JobActionInfo, 5> ActionChain(1);
3150 ActionChain.back().JA = BaseAction;
3151 while (ActionChain.back().JA) {
3152 const Action *CurAction = ActionChain.back().JA;
3153
3154 // Grow the chain by one element.
3155 ActionChain.resize(ActionChain.size() + 1);
3156 JobActionInfo &AI = ActionChain.back();
3157
3158 // Attempt to fill it with the
3159 AI.JA =
3160 getPrevDependentAction(CurAction->getInputs(), AI.SavedOffloadAction);
3161 }
3162
3163 // Pop the last action info as it could not be filled.
3164 ActionChain.pop_back();
3165
3166 //
3167 // Attempt to combine actions. If all combining attempts failed, just return
3168 // the tool of the provided action. At the end we attempt to combine the
3169 // action with any preprocessor action it may depend on.
3170 //
3171
3172 const Tool *T = combineAssembleBackendCompile(ActionChain, Inputs,
3173 CollapsedOffloadAction);
3174 if (!T)
3175 T = combineAssembleBackend(ActionChain, Inputs, CollapsedOffloadAction);
3176 if (!T)
3177 T = combineBackendCompile(ActionChain, Inputs, CollapsedOffloadAction);
3178 if (!T) {
3179 Inputs = &BaseAction->getInputs();
3180 T = TC.SelectTool(*BaseAction);
3181 }
3182
3183 combineWithPreprocessor(T, Inputs, CollapsedOffloadAction);
3184 return T;
3185 }
3186};
3187}
3188
3189/// Return a string that uniquely identifies the result of a job. The bound arch
3190/// is not necessarily represented in the toolchain's triple -- for example,
3191/// armv7 and armv7s both map to the same triple -- so we need both in our map.
3192/// Also, we need to add the offloading device kind, as the same tool chain can
3193/// be used for host and device for some programming models, e.g. OpenMP.
3194static std::string GetTriplePlusArchString(const ToolChain *TC,
3195 StringRef BoundArch,
3196 Action::OffloadKind OffloadKind) {
3197 std::string TriplePlusArch = TC->getTriple().normalize();
3198 if (!BoundArch.empty()) {
3199 TriplePlusArch += "-";
3200 TriplePlusArch += BoundArch;
3201 }
3202 TriplePlusArch += "-";
3203 TriplePlusArch += Action::GetOffloadKindName(OffloadKind);
3204 return TriplePlusArch;
3205}
3206
3207InputInfo Driver::BuildJobsForAction(
3208 Compilation &C, const Action *A, const ToolChain *TC, StringRef BoundArch,
3209 bool AtTopLevel, bool MultipleArchs, const char *LinkingOutput,
3210 std::map<std::pair<const Action *, std::string>, InputInfo> &CachedResults,
3211 Action::OffloadKind TargetDeviceOffloadKind) const {
3212 std::pair<const Action *, std::string> ActionTC = {
3213 A, GetTriplePlusArchString(TC, BoundArch, TargetDeviceOffloadKind)};
3214 auto CachedResult = CachedResults.find(ActionTC);
3215 if (CachedResult != CachedResults.end()) {
3216 return CachedResult->second;
3217 }
3218 InputInfo Result = BuildJobsForActionNoCache(
3219 C, A, TC, BoundArch, AtTopLevel, MultipleArchs, LinkingOutput,
3220 CachedResults, TargetDeviceOffloadKind);
3221 CachedResults[ActionTC] = Result;
3222 return Result;
3223}
3224
3225InputInfo Driver::BuildJobsForActionNoCache(
3226 Compilation &C, const Action *A, const ToolChain *TC, StringRef BoundArch,
3227 bool AtTopLevel, bool MultipleArchs, const char *LinkingOutput,
3228 std::map<std::pair<const Action *, std::string>, InputInfo> &CachedResults,
3229 Action::OffloadKind TargetDeviceOffloadKind) const {
3230 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
3231
3232 InputInfoList OffloadDependencesInputInfo;
3233 bool BuildingForOffloadDevice = TargetDeviceOffloadKind != Action::OFK_None;
3234 if (const OffloadAction *OA = dyn_cast<OffloadAction>(A)) {
3235 // The 'Darwin' toolchain is initialized only when its arguments are
3236 // computed. Get the default arguments for OFK_None to ensure that
3237 // initialization is performed before processing the offload action.
3238 // FIXME: Remove when darwin's toolchain is initialized during construction.
3239 C.getArgsForToolChain(TC, BoundArch, Action::OFK_None);
3240
3241 // The offload action is expected to be used in four different situations.
3242 //
3243 // a) Set a toolchain/architecture/kind for a host action:
3244 // Host Action 1 -> OffloadAction -> Host Action 2
3245 //
3246 // b) Set a toolchain/architecture/kind for a device action;
3247 // Device Action 1 -> OffloadAction -> Device Action 2
3248 //
3249 // c) Specify a device dependence to a host action;
3250 // Device Action 1 _
3251 // \
3252 // Host Action 1 ---> OffloadAction -> Host Action 2
3253 //
3254 // d) Specify a host dependence to a device action.
3255 // Host Action 1 _
3256 // \
3257 // Device Action 1 ---> OffloadAction -> Device Action 2
3258 //
3259 // For a) and b), we just return the job generated for the dependence. For
3260 // c) and d) we override the current action with the host/device dependence
3261 // if the current toolchain is host/device and set the offload dependences
3262 // info with the jobs obtained from the device/host dependence(s).
3263
3264 // If there is a single device option, just generate the job for it.
3265 if (OA->hasSingleDeviceDependence()) {
3266 InputInfo DevA;
3267 OA->doOnEachDeviceDependence([&](Action *DepA, const ToolChain *DepTC,
3268 const char *DepBoundArch) {
3269 DevA =
3270 BuildJobsForAction(C, DepA, DepTC, DepBoundArch, AtTopLevel,
3271 /*MultipleArchs*/ !!DepBoundArch, LinkingOutput,
3272 CachedResults, DepA->getOffloadingDeviceKind());
3273 });
3274 return DevA;
3275 }
3276
3277 // If 'Action 2' is host, we generate jobs for the device dependences and
3278 // override the current action with the host dependence. Otherwise, we
3279 // generate the host dependences and override the action with the device
3280 // dependence. The dependences can't therefore be a top-level action.
3281 OA->doOnEachDependence(
3282 /*IsHostDependence=*/BuildingForOffloadDevice,
3283 [&](Action *DepA, const ToolChain *DepTC, const char *DepBoundArch) {
3284 OffloadDependencesInputInfo.push_back(BuildJobsForAction(
3285 C, DepA, DepTC, DepBoundArch, /*AtTopLevel=*/false,
3286 /*MultipleArchs*/ !!DepBoundArch, LinkingOutput, CachedResults,
3287 DepA->getOffloadingDeviceKind()));
3288 });
3289
3290 A = BuildingForOffloadDevice
3291 ? OA->getSingleDeviceDependence(/*DoNotConsiderHostActions=*/true)
3292 : OA->getHostDependence();
3293 }
3294
3295 if (const InputAction *IA = dyn_cast<InputAction>(A)) {
3296 // FIXME: It would be nice to not claim this here; maybe the old scheme of
3297 // just using Args was better?
3298 const Arg &Input = IA->getInputArg();
3299 Input.claim();
3300 if (Input.getOption().matches(options::OPT_INPUT)) {
3301 const char *Name = Input.getValue();
3302 return InputInfo(A, Name, /* BaseInput = */ Name);
3303 }
3304 return InputInfo(A, &Input, /* BaseInput = */ "");
3305 }
3306
3307 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
3308 const ToolChain *TC;
3309 StringRef ArchName = BAA->getArchName();
3310
3311 if (!ArchName.empty())
3312 TC = &getToolChain(C.getArgs(),
3313 computeTargetTriple(*this, DefaultTargetTriple,
3314 C.getArgs(), ArchName));
3315 else
3316 TC = &C.getDefaultToolChain();
3317
3318 return BuildJobsForAction(C, *BAA->input_begin(), TC, ArchName, AtTopLevel,
3319 MultipleArchs, LinkingOutput, CachedResults,
3320 TargetDeviceOffloadKind);
3321 }
3322
3323
3324 const ActionList *Inputs = &A->getInputs();
3325
3326 const JobAction *JA = cast<JobAction>(A);
3327 ActionList CollapsedOffloadActions;
3328
3329 ToolSelector TS(JA, *TC, C, isSaveTempsEnabled(),
3330 embedBitcodeInObject() && !isUsingLTO());
3331 const Tool *T = TS.getTool(Inputs, CollapsedOffloadActions);
3332
3333 if (!T)
3334 return InputInfo();
3335
3336 // If we've collapsed action list that contained OffloadAction we
3337 // need to build jobs for host/device-side inputs it may have held.
3338 for (const auto *OA : CollapsedOffloadActions)
3339 cast<OffloadAction>(OA)->doOnEachDependence(
3340 /*IsHostDependence=*/BuildingForOffloadDevice,
3341 [&](Action *DepA, const ToolChain *DepTC, const char *DepBoundArch) {
3342 OffloadDependencesInputInfo.push_back(BuildJobsForAction(
3343 C, DepA, DepTC, DepBoundArch, /* AtTopLevel */ false,
3344 /*MultipleArchs=*/!!DepBoundArch, LinkingOutput, CachedResults,
3345 DepA->getOffloadingDeviceKind()));
3346 });
3347
3348 // Only use pipes when there is exactly one input.
3349 InputInfoList InputInfos;
3350 for (const Action *Input : *Inputs) {
3351 // Treat dsymutil and verify sub-jobs as being at the top-level too, they
3352 // shouldn't get temporary output names.
3353 // FIXME: Clean this up.
3354 bool SubJobAtTopLevel =
3355 AtTopLevel && (isa<DsymutilJobAction>(A) || isa<VerifyJobAction>(A));
3356 InputInfos.push_back(BuildJobsForAction(
3357 C, Input, TC, BoundArch, SubJobAtTopLevel, MultipleArchs, LinkingOutput,
3358 CachedResults, A->getOffloadingDeviceKind()));
3359 }
3360
3361 // Always use the first input as the base input.
3362 const char *BaseInput = InputInfos[0].getBaseInput();
3363
3364 // ... except dsymutil actions, which use their actual input as the base
3365 // input.
3366 if (JA->getType() == types::TY_dSYM)
3367 BaseInput = InputInfos[0].getFilename();
3368
3369 // Append outputs of offload device jobs to the input list
3370 if (!OffloadDependencesInputInfo.empty())
3371 InputInfos.append(OffloadDependencesInputInfo.begin(),
3372 OffloadDependencesInputInfo.end());
3373
3374 // Set the effective triple of the toolchain for the duration of this job.
3375 llvm::Triple EffectiveTriple;
3376 const ToolChain &ToolTC = T->getToolChain();
3377 const ArgList &Args =
3378 C.getArgsForToolChain(TC, BoundArch, A->getOffloadingDeviceKind());
3379 if (InputInfos.size() != 1) {
3380 EffectiveTriple = llvm::Triple(ToolTC.ComputeEffectiveClangTriple(Args));
3381 } else {
3382 // Pass along the input type if it can be unambiguously determined.
3383 EffectiveTriple = llvm::Triple(
3384 ToolTC.ComputeEffectiveClangTriple(Args, InputInfos[0].getType()));
3385 }
3386 RegisterEffectiveTriple TripleRAII(ToolTC, EffectiveTriple);
3387
3388 // Determine the place to write output to, if any.
3389 InputInfo Result;
3390 InputInfoList UnbundlingResults;
3391 if (auto *UA = dyn_cast<OffloadUnbundlingJobAction>(JA)) {
3392 // If we have an unbundling job, we need to create results for all the
3393 // outputs. We also update the results cache so that other actions using
3394 // this unbundling action can get the right results.
3395 for (auto &UI : UA->getDependentActionsInfo()) {
3396 assert(UI.DependentOffloadKind != Action::OFK_None &&((UI.DependentOffloadKind != Action::OFK_None && "Unbundling with no offloading??"
) ? static_cast<void> (0) : __assert_fail ("UI.DependentOffloadKind != Action::OFK_None && \"Unbundling with no offloading??\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3397, __PRETTY_FUNCTION__))
3397 "Unbundling with no offloading??")((UI.DependentOffloadKind != Action::OFK_None && "Unbundling with no offloading??"
) ? static_cast<void> (0) : __assert_fail ("UI.DependentOffloadKind != Action::OFK_None && \"Unbundling with no offloading??\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3397, __PRETTY_FUNCTION__))
;
3398
3399 // Unbundling actions are never at the top level. When we generate the
3400 // offloading prefix, we also do that for the host file because the
3401 // unbundling action does not change the type of the output which can
3402 // cause a overwrite.
3403 std::string OffloadingPrefix = Action::GetOffloadingFileNamePrefix(
3404 UI.DependentOffloadKind,
3405 UI.DependentToolChain->getTriple().normalize(),
3406 /*CreatePrefixForHost=*/true);
3407 auto CurI = InputInfo(
3408 UA, GetNamedOutputPath(C, *UA, BaseInput, UI.DependentBoundArch,
3409 /*AtTopLevel=*/false, MultipleArchs,
3410 OffloadingPrefix),
3411 BaseInput);
3412 // Save the unbundling result.
3413 UnbundlingResults.push_back(CurI);
3414
3415 // Get the unique string identifier for this dependence and cache the
3416 // result.
3417 CachedResults[{A, GetTriplePlusArchString(
3418 UI.DependentToolChain, BoundArch,
3419 UI.DependentOffloadKind)}] = CurI;
3420 }
3421
3422 // Now that we have all the results generated, select the one that should be
3423 // returned for the current depending action.
3424 std::pair<const Action *, std::string> ActionTC = {
3425 A, GetTriplePlusArchString(TC, BoundArch, TargetDeviceOffloadKind)};
3426 assert(CachedResults.find(ActionTC) != CachedResults.end() &&((CachedResults.find(ActionTC) != CachedResults.end() &&
"Result does not exist??") ? static_cast<void> (0) : __assert_fail
("CachedResults.find(ActionTC) != CachedResults.end() && \"Result does not exist??\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3427, __PRETTY_FUNCTION__))
3427 "Result does not exist??")((CachedResults.find(ActionTC) != CachedResults.end() &&
"Result does not exist??") ? static_cast<void> (0) : __assert_fail
("CachedResults.find(ActionTC) != CachedResults.end() && \"Result does not exist??\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3427, __PRETTY_FUNCTION__))
;
3428 Result = CachedResults[ActionTC];
3429 } else if (JA->getType() == types::TY_Nothing)
3430 Result = InputInfo(A, BaseInput);
3431 else {
3432 // We only have to generate a prefix for the host if this is not a top-level
3433 // action.
3434 std::string OffloadingPrefix = Action::GetOffloadingFileNamePrefix(
3435 A->getOffloadingDeviceKind(), TC->getTriple().normalize(),
3436 /*CreatePrefixForHost=*/!!A->getOffloadingHostActiveKinds() &&
3437 !AtTopLevel);
3438 Result = InputInfo(A, GetNamedOutputPath(C, *JA, BaseInput, BoundArch,
3439 AtTopLevel, MultipleArchs,
3440 OffloadingPrefix),
3441 BaseInput);
3442 }
3443
3444 if (CCCPrintBindings && !CCGenDiagnostics) {
3445 llvm::errs() << "# \"" << T->getToolChain().getTripleString() << '"'
3446 << " - \"" << T->getName() << "\", inputs: [";
3447 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
3448 llvm::errs() << InputInfos[i].getAsString();
3449 if (i + 1 != e)
3450 llvm::errs() << ", ";
3451 }
3452 if (UnbundlingResults.empty())
3453 llvm::errs() << "], output: " << Result.getAsString() << "\n";
3454 else {
3455 llvm::errs() << "], outputs: [";
3456 for (unsigned i = 0, e = UnbundlingResults.size(); i != e; ++i) {
3457 llvm::errs() << UnbundlingResults[i].getAsString();
3458 if (i + 1 != e)
3459 llvm::errs() << ", ";
3460 }
3461 llvm::errs() << "] \n";
3462 }
3463 } else {
3464 if (UnbundlingResults.empty())
3465 T->ConstructJob(
3466 C, *JA, Result, InputInfos,
3467 C.getArgsForToolChain(TC, BoundArch, JA->getOffloadingDeviceKind()),
3468 LinkingOutput);
3469 else
3470 T->ConstructJobMultipleOutputs(
3471 C, *JA, UnbundlingResults, InputInfos,
3472 C.getArgsForToolChain(TC, BoundArch, JA->getOffloadingDeviceKind()),
3473 LinkingOutput);
3474 }
3475 return Result;
3476}
3477
3478const char *Driver::getDefaultImageName() const {
3479 llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple));
3480 return Target.isOSWindows() ? "a.exe" : "a.out";
3481}
3482
3483/// \brief Create output filename based on ArgValue, which could either be a
3484/// full filename, filename without extension, or a directory. If ArgValue
3485/// does not provide a filename, then use BaseName, and use the extension
3486/// suitable for FileType.
3487static const char *MakeCLOutputFilename(const ArgList &Args, StringRef ArgValue,
3488 StringRef BaseName,
3489 types::ID FileType) {
3490 SmallString<128> Filename = ArgValue;
3491
3492 if (ArgValue.empty()) {
3493 // If the argument is empty, output to BaseName in the current dir.
3494 Filename = BaseName;
3495 } else if (llvm::sys::path::is_separator(Filename.back())) {
3496 // If the argument is a directory, output to BaseName in that dir.
3497 llvm::sys::path::append(Filename, BaseName);
3498 }
3499
3500 if (!llvm::sys::path::has_extension(ArgValue)) {
3501 // If the argument didn't provide an extension, then set it.
3502 const char *Extension = types::getTypeTempSuffix(FileType, true);
3503
3504 if (FileType == types::TY_Image &&
3505 Args.hasArg(options::OPT__SLASH_LD, options::OPT__SLASH_LDd)) {
3506 // The output file is a dll.
3507 Extension = "dll";
3508 }
3509
3510 llvm::sys::path::replace_extension(Filename, Extension);
3511 }
3512
3513 return Args.MakeArgString(Filename.c_str());
3514}
3515
3516const char *Driver::GetNamedOutputPath(Compilation &C, const JobAction &JA,
3517 const char *BaseInput,
3518 StringRef BoundArch, bool AtTopLevel,
3519 bool MultipleArchs,
3520 StringRef OffloadingPrefix) const {
3521 llvm::PrettyStackTraceString CrashInfo("Computing output path");
3522 // Output to a user requested destination?
3523 if (AtTopLevel && !isa<DsymutilJobAction>(JA) && !isa<VerifyJobAction>(JA)) {
3524 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
3525 return C.addResultFile(FinalOutput->getValue(), &JA);
3526 }
3527
3528 // For /P, preprocess to file named after BaseInput.
3529 if (C.getArgs().hasArg(options::OPT__SLASH_P)) {
3530 assert(AtTopLevel && isa<PreprocessJobAction>(JA))((AtTopLevel && isa<PreprocessJobAction>(JA)) ?
static_cast<void> (0) : __assert_fail ("AtTopLevel && isa<PreprocessJobAction>(JA)"
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3530, __PRETTY_FUNCTION__))
;
3531 StringRef BaseName = llvm::sys::path::filename(BaseInput);
3532 StringRef NameArg;
3533 if (Arg *A = C.getArgs().getLastArg(options::OPT__SLASH_Fi))
3534 NameArg = A->getValue();
3535 return C.addResultFile(
3536 MakeCLOutputFilename(C.getArgs(), NameArg, BaseName, types::TY_PP_C),
3537 &JA);
3538 }
3539
3540 // Default to writing to stdout?
3541 if (AtTopLevel && !CCGenDiagnostics &&
3542 (isa<PreprocessJobAction>(JA) || JA.getType() == types::TY_ModuleFile))
3543 return "-";
3544
3545 // Is this the assembly listing for /FA?
3546 if (JA.getType() == types::TY_PP_Asm &&
3547 (C.getArgs().hasArg(options::OPT__SLASH_FA) ||
3548 C.getArgs().hasArg(options::OPT__SLASH_Fa))) {
3549 // Use /Fa and the input filename to determine the asm file name.
3550 StringRef BaseName = llvm::sys::path::filename(BaseInput);
3551 StringRef FaValue = C.getArgs().getLastArgValue(options::OPT__SLASH_Fa);
3552 return C.addResultFile(
3553 MakeCLOutputFilename(C.getArgs(), FaValue, BaseName, JA.getType()),
3554 &JA);
3555 }
3556
3557 // Output to a temporary file?
3558 if ((!AtTopLevel && !isSaveTempsEnabled() &&
3559 !C.getArgs().hasArg(options::OPT__SLASH_Fo)) ||
3560 CCGenDiagnostics) {
3561 StringRef Name = llvm::sys::path::filename(BaseInput);
3562 std::pair<StringRef, StringRef> Split = Name.split('.');
3563 std::string TmpName = GetTemporaryPath(
3564 Split.first, types::getTypeTempSuffix(JA.getType(), IsCLMode()));
3565 return C.addTempFile(C.getArgs().MakeArgString(TmpName));
3566 }
3567
3568 SmallString<128> BasePath(BaseInput);
3569 StringRef BaseName;
3570
3571 // Dsymutil actions should use the full path.
3572 if (isa<DsymutilJobAction>(JA) || isa<VerifyJobAction>(JA))
3573 BaseName = BasePath;
3574 else
3575 BaseName = llvm::sys::path::filename(BasePath);
3576
3577 // Determine what the derived output name should be.
3578 const char *NamedOutput;
3579
3580 if ((JA.getType() == types::TY_Object || JA.getType() == types::TY_LTO_BC) &&
3581 C.getArgs().hasArg(options::OPT__SLASH_Fo, options::OPT__SLASH_o)) {
3582 // The /Fo or /o flag decides the object filename.
3583 StringRef Val =
3584 C.getArgs()
3585 .getLastArg(options::OPT__SLASH_Fo, options::OPT__SLASH_o)
3586 ->getValue();
3587 NamedOutput =
3588 MakeCLOutputFilename(C.getArgs(), Val, BaseName, types::TY_Object);
3589 } else if (JA.getType() == types::TY_Image &&
3590 C.getArgs().hasArg(options::OPT__SLASH_Fe,
3591 options::OPT__SLASH_o)) {
3592 // The /Fe or /o flag names the linked file.
3593 StringRef Val =
3594 C.getArgs()
3595 .getLastArg(options::OPT__SLASH_Fe, options::OPT__SLASH_o)
3596 ->getValue();
3597 NamedOutput =
3598 MakeCLOutputFilename(C.getArgs(), Val, BaseName, types::TY_Image);
3599 } else if (JA.getType() == types::TY_Image) {
3600 if (IsCLMode()) {
3601 // clang-cl uses BaseName for the executable name.
3602 NamedOutput =
3603 MakeCLOutputFilename(C.getArgs(), "", BaseName, types::TY_Image);
3604 } else {
3605 SmallString<128> Output(getDefaultImageName());
3606 Output += OffloadingPrefix;
3607 if (MultipleArchs && !BoundArch.empty()) {
3608 Output += "-";
3609 Output.append(BoundArch);
3610 }
3611 NamedOutput = C.getArgs().MakeArgString(Output.c_str());
3612 }
3613 } else if (JA.getType() == types::TY_PCH && IsCLMode()) {
3614 NamedOutput = C.getArgs().MakeArgString(GetClPchPath(C, BaseName));
3615 } else {
3616 const char *Suffix = types::getTypeTempSuffix(JA.getType(), IsCLMode());
3617 assert(Suffix && "All types used for output should have a suffix.")((Suffix && "All types used for output should have a suffix."
) ? static_cast<void> (0) : __assert_fail ("Suffix && \"All types used for output should have a suffix.\""
, "/build/llvm-toolchain-snapshot-6.0~svn315928/tools/clang/lib/Driver/Driver.cpp"
, 3617, __PRETTY_FUNCTION__))
;
3618
3619 std::string::size_type End = std::string::npos;
3620 if (!types::appendSuffixForType(JA.getType()))
3621 End = BaseName.rfind('.');
3622 SmallString<128> Suffixed(BaseName.substr(0, End));
3623 Suffixed += OffloadingPrefix;
3624 if (MultipleArchs && !BoundArch.empty()) {
3625 Suffixed += "-";
3626 Suffixed.append(BoundArch);
3627 }
3628 // When using both -save-temps and -emit-llvm, use a ".tmp.bc" suffix for
3629 // the unoptimized bitcode so that it does not get overwritten by the ".bc"
3630 // optimized bitcode output.
3631 if (!AtTopLevel && C.getArgs().hasArg(options::OPT_emit_llvm) &&
3632 JA.getType() == types::TY_LLVM_BC)
3633 Suffixed += ".tmp";
3634 Suffixed += '.';
3635 Suffixed += Suffix;
3636 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
3637 }
3638
3639 // Prepend object file path if -save-temps=obj
3640 if (!AtTopLevel && isSaveTempsObj() && C.getArgs().hasArg(options::OPT_o) &&
3641 JA.getType() != types::TY_PCH) {
3642 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
3643 SmallString<128> TempPath(FinalOutput->getValue());
3644 llvm::sys::path::remove_filename(TempPath);
3645 StringRef OutputFileName = llvm::sys::path::filename(NamedOutput);
3646 llvm::sys::path::append(TempPath, OutputFileName);
3647 NamedOutput = C.getArgs().MakeArgString(TempPath.c_str());
3648 }
3649
3650 // If we're saving temps and the temp file conflicts with the input file,
3651 // then avoid overwriting input file.
3652 if (!AtTopLevel && isSaveTempsEnabled() && NamedOutput == BaseName) {
3653 bool SameFile = false;
3654 SmallString<256> Result;
3655 llvm::sys::fs::current_path(Result);
3656 llvm::sys::path::append(Result, BaseName);
3657 llvm::sys::fs::equivalent(BaseInput, Result.c_str(), SameFile);
3658 // Must share the same path to conflict.
3659 if (SameFile) {
3660 StringRef Name = llvm::sys::path::filename(BaseInput);
3661 std::pair<StringRef, StringRef> Split = Name.split('.');
3662 std::string TmpName = GetTemporaryPath(
3663 Split.first, types::getTypeTempSuffix(JA.getType(), IsCLMode()));
3664 return C.addTempFile(C.getArgs().MakeArgString(TmpName));
3665 }
3666 }
3667
3668 // As an annoying special case, PCH generation doesn't strip the pathname.
3669 if (JA.getType() == types::TY_PCH && !IsCLMode()) {
3670 llvm::sys::path::remove_filename(BasePath);
3671 if (BasePath.empty())
3672 BasePath = NamedOutput;
3673 else
3674 llvm::sys::path::append(BasePath, NamedOutput);
3675 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()), &JA);
3676 } else {
3677 return C.addResultFile(NamedOutput, &JA);
3678 }
3679}
3680
3681std::string Driver::GetFilePath(StringRef Name, const ToolChain &TC) const {
3682 // Respect a limited subset of the '-Bprefix' functionality in GCC by
3683 // attempting to use this prefix when looking for file paths.
3684 for (const std::string &Dir : PrefixDirs) {
3685 if (Dir.empty())
3686 continue;
3687 SmallString<128> P(Dir[0] == '=' ? SysRoot + Dir.substr(1) : Dir);
3688 llvm::sys::path::append(P, Name);
3689 if (llvm::sys::fs::exists(Twine(P)))
3690 return P.str();
3691 }
3692
3693 SmallString<128> R(ResourceDir);
3694 llvm::sys::path::append(R, Name);
3695 if (llvm::sys::fs::exists(Twine(R)))
3696 return R.str();
3697
3698 SmallString<128> P(TC.getCompilerRTPath());
3699 llvm::sys::path::append(P, Name);
3700 if (llvm::sys::fs::exists(Twine(P)))
3701 return P.str();
3702
3703 for (const std::string &Dir : TC.getFilePaths()) {
3704 if (Dir.empty())
3705 continue;
3706 SmallString<128> P(Dir[0] == '=' ? SysRoot + Dir.substr(1) : Dir);
3707 llvm::sys::path::append(P, Name);
3708 if (llvm::sys::fs::exists(Twine(P)))
3709 return P.str();
3710 }
3711
3712 return Name;
3713}
3714
3715void Driver::generatePrefixedToolNames(
3716 StringRef Tool, const ToolChain &TC,
3717 SmallVectorImpl<std::string> &Names) const {
3718 // FIXME: Needs a better variable than DefaultTargetTriple
3719 Names.emplace_back((DefaultTargetTriple + "-" + Tool).str());
3720 Names.emplace_back(Tool);
3721
3722 // Allow the discovery of tools prefixed with LLVM's default target triple.
3723 std::string LLVMDefaultTargetTriple = llvm::sys::getDefaultTargetTriple();
3724 if (LLVMDefaultTargetTriple != DefaultTargetTriple)
3725 Names.emplace_back((LLVMDefaultTargetTriple + "-" + Tool).str());
3726}
3727
3728static bool ScanDirForExecutable(SmallString<128> &Dir,
3729 ArrayRef<std::string> Names) {
3730 for (const auto &Name : Names) {
3731 llvm::sys::path::append(Dir, Name);
3732 if (llvm::sys::fs::can_execute(Twine(Dir)))
3733 return true;
3734 llvm::sys::path::remove_filename(Dir);
3735 }
3736 return false;
3737}
3738
3739std::string Driver::GetProgramPath(StringRef Name, const ToolChain &TC) const {
3740 SmallVector<std::string, 2> TargetSpecificExecutables;
3741 generatePrefixedToolNames(Name, TC, TargetSpecificExecutables);
3742
3743 // Respect a limited subset of the '-Bprefix' functionality in GCC by
3744 // attempting to use this prefix when looking for program paths.
3745 for (const auto &PrefixDir : PrefixDirs) {
3746 if (llvm::sys::fs::is_directory(PrefixDir)) {
3747 SmallString<128> P(PrefixDir);
3748 if (ScanDirForExecutable(P, TargetSpecificExecutables))
3749 return P.str();
3750 } else {
3751 SmallString<128> P((PrefixDir + Name).str());
3752 if (llvm::sys::fs::can_execute(Twine(P)))
3753 return P.str();
3754 }
3755 }
3756
3757 const ToolChain::path_list &List = TC.getProgramPaths();
3758 for (const auto &Path : List) {
3759 SmallString<128> P(Path);
3760 if (ScanDirForExecutable(P, TargetSpecificExecutables))
3761 return P.str();
3762 }
3763
3764 // If all else failed, search the path.
3765 for (const auto &TargetSpecificExecutable : TargetSpecificExecutables)
3766 if (llvm::ErrorOr<std::string> P =
3767 llvm::sys::findProgramByName(TargetSpecificExecutable))
3768 return *P;
3769
3770 return Name;
3771}
3772
3773std::string Driver::GetTemporaryPath(StringRef Prefix, StringRef Suffix) const {
3774 SmallString<128> Path;
3775 std::error_code EC = llvm::sys::fs::createTemporaryFile(Prefix, Suffix, Path);
3776 if (EC) {
3777 Diag(clang::diag::err_unable_to_make_temp) << EC.message();
3778 return "";
3779 }
3780
3781 return Path.str();
3782}
3783
3784std::string Driver::GetClPchPath(Compilation &C, StringRef BaseName) const {
3785 SmallString<128> Output;
3786 if (Arg *FpArg = C.getArgs().getLastArg(options::OPT__SLASH_Fp)) {
3787 // FIXME: If anybody needs it, implement this obscure rule:
3788 // "If you specify a directory without a file name, the default file name
3789 // is VCx0.pch., where x is the major version of Visual C++ in use."
3790 Output = FpArg->getValue();
3791
3792 // "If you do not specify an extension as part of the path name, an
3793 // extension of .pch is assumed. "
3794 if (!llvm::sys::path::has_extension(Output))
3795 Output += ".pch";
3796 } else {
3797 Output = BaseName;
3798 llvm::sys::path::replace_extension(Output, ".pch");
3799 }
3800 return Output.str();
3801}
3802
3803const ToolChain &Driver::getToolChain(const ArgList &Args,
3804 const llvm::Triple &Target) const {
3805
3806 auto &TC = ToolChains[Target.str()];
3807 if (!TC) {
3808 switch (Target.getOS()) {
3809 case llvm::Triple::Haiku:
3810 TC = llvm::make_unique<toolchains::Haiku>(*this, Target, Args);
3811 break;
3812 case llvm::Triple::Ananas:
3813 TC = llvm::make_unique<toolchains::Ananas>(*this, Target, Args);
3814 break;
3815 case llvm::Triple::CloudABI:
3816 TC = llvm::make_unique<toolchains::CloudABI>(*this, Target, Args);
3817 break;
3818 case llvm::Triple::Darwin:
3819 case llvm::Triple::MacOSX:
3820 case llvm::Triple::IOS:
3821 case llvm::Triple::TvOS:
3822 case llvm::Triple::WatchOS:
3823 TC = llvm::make_unique<toolchains::DarwinClang>(*this, Target, Args);
3824 break;
3825 case llvm::Triple::DragonFly:
3826 TC = llvm::make_unique<toolchains::DragonFly>(*this, Target, Args);
3827 break;
3828 case llvm::Triple::OpenBSD:
3829 TC = llvm::make_unique<toolchains::OpenBSD>(*this, Target, Args);
3830 break;
3831 case llvm::Triple::NetBSD:
3832 TC = llvm::make_unique<toolchains::NetBSD>(*this, Target, Args);
3833 break;
3834 case llvm::Triple::FreeBSD:
3835 TC = llvm::make_unique<toolchains::FreeBSD>(*this, Target, Args);
3836 break;
3837 case llvm::Triple::Minix:
3838 TC = llvm::make_unique<toolchains::Minix>(*this, Target, Args);
3839 break;
3840 case llvm::Triple::Linux:
3841 case llvm::Triple::ELFIAMCU:
3842 if (Target.getArch() == llvm::Triple::hexagon)
3843 TC = llvm::make_unique<toolchains::HexagonToolChain>(*this, Target,
3844 Args);
3845 else if ((Target.getVendor() == llvm::Triple::MipsTechnologies) &&
3846 !Target.hasEnvironment())
3847 TC = llvm::make_unique<toolchains::MipsLLVMToolChain>(*this, Target,
3848 Args);
3849 else
3850 TC = llvm::make_unique<toolchains::Linux>(*this, Target, Args);
3851 break;
3852 case llvm::Triple::NaCl:
3853 TC = llvm::make_unique<toolchains::NaClToolChain>(*this, Target, Args);
3854 break;
3855 case llvm::Triple::Fuchsia:
3856 TC = llvm::make_unique<toolchains::Fuchsia>(*this, Target, Args);
3857 break;
3858 case llvm::Triple::Solaris:
3859 TC = llvm::make_unique<toolchains::Solaris>(*this, Target, Args);
3860 break;
3861 case llvm::Triple::AMDHSA:
3862 TC = llvm::make_unique<toolchains::AMDGPUToolChain>(*this, Target, Args);
3863 break;
3864 case llvm::Triple::Win32:
3865 switch (Target.getEnvironment()) {
3866 default:
3867 if (Target.isOSBinFormatELF())
3868 TC = llvm::make_unique<toolchains::Generic_ELF>(*this, Target, Args);
3869 else if (Target.isOSBinFormatMachO())
3870 TC = llvm::make_unique<toolchains::MachO>(*this, Target, Args);
3871 else
3872 TC = llvm::make_unique<toolchains::Generic_GCC>(*this, Target, Args);
3873 break;
3874 case llvm::Triple::GNU:
3875 TC = llvm::make_unique<toolchains::MinGW>(*this, Target, Args);
3876 break;
3877 case llvm::Triple::Itanium:
3878 TC = llvm::make_unique<toolchains::CrossWindowsToolChain>(*this, Target,
3879 Args);
3880 break;
3881 case llvm::Triple::MSVC:
3882 case llvm::Triple::UnknownEnvironment:
3883 TC = llvm::make_unique<toolchains::MSVCToolChain>(*this, Target, Args);
3884 break;
3885 }
3886 break;
3887 case llvm::Triple::PS4:
3888 TC = llvm::make_unique<toolchains::PS4CPU>(*this, Target, Args);
3889 break;
3890 case llvm::Triple::Contiki:
3891 TC = llvm::make_unique<toolchains::Contiki>(*this, Target, Args);
3892 break;
3893 default:
3894 // Of these targets, Hexagon is the only one that might have
3895 // an OS of Linux, in which case it got handled above already.
3896 switch (Target.getArch()) {
3897 case llvm::Triple::tce:
3898 TC = llvm::make_unique<toolchains::TCEToolChain>(*this, Target, Args);
3899 break;
3900 case llvm::Triple::tcele:
3901 TC = llvm::make_unique<toolchains::TCELEToolChain>(*this, Target, Args);
3902 break;
3903 case llvm::Triple::hexagon:
3904 TC = llvm::make_unique<toolchains::HexagonToolChain>(*this, Target,
3905 Args);
3906 break;
3907 case llvm::Triple::lanai:
3908 TC = llvm::make_unique<toolchains::LanaiToolChain>(*this, Target, Args);
3909 break;
3910 case llvm::Triple::xcore:
3911 TC = llvm::make_unique<toolchains::XCoreToolChain>(*this, Target, Args);
3912 break;
3913 case llvm::Triple::wasm32:
3914 case llvm::Triple::wasm64:
3915 TC = llvm::make_unique<toolchains::WebAssembly>(*this, Target, Args);
3916 break;
3917 case llvm::Triple::avr:
3918 TC = llvm::make_unique<toolchains::AVRToolChain>(*this, Target, Args);
3919 break;
3920 default:
3921 if (Target.getVendor() == llvm::Triple::Myriad)
3922 TC = llvm::make_unique<toolchains::MyriadToolChain>(*this, Target,
3923 Args);
3924 else if (toolchains::BareMetal::handlesTarget(Target))
3925 TC = llvm::make_unique<toolchains::BareMetal>(*this, Target, Args);
3926 else if (Target.isOSBinFormatELF())
3927 TC = llvm::make_unique<toolchains::Generic_ELF>(*this, Target, Args);
3928 else if (Target.isOSBinFormatMachO())
3929 TC = llvm::make_unique<toolchains::MachO>(*this, Target, Args);
3930 else
3931 TC = llvm::make_unique<toolchains::Generic_GCC>(*this, Target, Args);
3932 }
3933 }
3934 }
3935
3936 // Intentionally omitted from the switch above: llvm::Triple::CUDA. CUDA
3937 // compiles always need two toolchains, the CUDA toolchain and the host
3938 // toolchain. So the only valid way to create a CUDA toolchain is via
3939 // CreateOffloadingDeviceToolChains.
3940
3941 return *TC;
3942}
3943
3944bool Driver::ShouldUseClangCompiler(const JobAction &JA) const {
3945 // Say "no" if there is not exactly one input of a type clang understands.
3946 if (JA.size() != 1 ||
3947 !types::isAcceptedByClang((*JA.input_begin())->getType()))
3948 return false;
3949
3950 // And say "no" if this is not a kind of action clang understands.
3951 if (!isa<PreprocessJobAction>(JA) && !isa<PrecompileJobAction>(JA) &&
3952 !isa<CompileJobAction>(JA) && !isa<BackendJobAction>(JA))
3953 return false;
3954
3955 return true;
3956}
3957
3958/// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
3959/// grouped values as integers. Numbers which are not provided are set to 0.
3960///
3961/// \return True if the entire string was parsed (9.2), or all groups were
3962/// parsed (10.3.5extrastuff).
3963bool Driver::GetReleaseVersion(StringRef Str, unsigned &Major, unsigned &Minor,
3964 unsigned &Micro, bool &HadExtra) {
3965 HadExtra = false;
3966
3967 Major = Minor = Micro = 0;
3968 if (Str.empty())
3969 return false;
3970
3971 if (Str.consumeInteger(10, Major))
3972 return false;
3973 if (Str.empty())
3974 return true;
3975 if (Str[0] != '.')
3976 return false;
3977
3978 Str = Str.drop_front(1);
3979
3980 if (Str.consumeInteger(10, Minor))
3981 return false;
3982 if (Str.empty())
3983 return true;
3984 if (Str[0] != '.')
3985 return false;
3986 Str = Str.drop_front(1);
3987
3988 if (Str.consumeInteger(10, Micro))
3989 return false;
3990 if (!Str.empty())
3991 HadExtra = true;
3992 return true;
3993}
3994
3995/// Parse digits from a string \p Str and fulfill \p Digits with
3996/// the parsed numbers. This method assumes that the max number of
3997/// digits to look for is equal to Digits.size().
3998///
3999/// \return True if the entire string was parsed and there are
4000/// no extra characters remaining at the end.
4001bool Driver::GetReleaseVersion(StringRef Str,
4002 MutableArrayRef<unsigned> Digits) {
4003 if (Str.empty())
4004 return false;
4005
4006 unsigned CurDigit = 0;
4007 while (CurDigit < Digits.size()) {
4008 unsigned Digit;
4009 if (Str.consumeInteger(10, Digit))
4010 return false;
4011 Digits[CurDigit] = Digit;
4012 if (Str.empty())
4013 return true;
4014 if (Str[0] != '.')
4015 return false;
4016 Str = Str.drop_front(1);
4017 CurDigit++;
4018 }
4019
4020 // More digits than requested, bail out...
4021 return false;
4022}
4023
4024std::pair<unsigned, unsigned> Driver::getIncludeExcludeOptionFlagMasks() const {
4025 unsigned IncludedFlagsBitmask = 0;
4026 unsigned ExcludedFlagsBitmask = options::NoDriverOption;
4027
4028 if (Mode == CLMode) {
4029 // Include CL and Core options.
4030 IncludedFlagsBitmask |= options::CLOption;
4031 IncludedFlagsBitmask |= options::CoreOption;
4032 } else {
4033 ExcludedFlagsBitmask |= options::CLOption;
4034 }
4035
4036 return std::make_pair(IncludedFlagsBitmask, ExcludedFlagsBitmask);
4037}
4038
4039bool clang::driver::isOptimizationLevelFast(const ArgList &Args) {
4040 return Args.hasFlag(options::OPT_Ofast, options::OPT_O_Group, false);
4041}